Quarterlytics / Basic Materials / Oil & Gas Integrated / Noble Energy, Inc.

Noble Energy, Inc.

nbl · NYSE Basic Materials
Claim this profile
Ticker nbl
Exchange NYSE
Sector Basic Materials
Industry Oil & Gas Integrated
Employees 1001-5000
← All annual reports
FY2017 Annual Report · Noble Energy, Inc.
Sign in to download
Loading PDF…
l

N

o

b

l

e

E

n

e

r

g

y

,

I

n

c

.

2

0

1

7

A

n

n

u

a

l

R

e

p

o

r

t

We are Noble

Energizing the World

Bettering People’s Lives®

Date

Title

2017Annual Report 
 
 
 
 
 
 
 
 
 
 
 
Financial Discipline

 p Capital efficiency focus 
 p Capital deployed to 
highest returns
 p Comprehensive risk 

management

Exceptional Portfolio

 p High-return, 

high-margin focus
 p Active management 
captures full value
 p Material exploration 

opportunities

Operational Execution

 p Safe and responsible
 p Industry-leading  

execution

 p Integrated upstream/

midstream

“ This was a 
  transformative year.”

David L. Stover, Chairman, President and CEO

DEAR FELLOW SHAREHOLDERS,
This  was  a  transformative  year  for  Noble  Energy  as  we  

sharpened  our 

focus.  We  executed  our  plan,  seized 

opportunities  and  accomplished  what  we  set  out  to  do 

–  position  the  company’s  portfolio  to  deliver  long-term 

sustainable shareholder value. 

Within  each  of  our  four  strategic  cornerstones,  we  made 

tremendous  progress.  We  delivered  leading  onshore  well  

results,  advanced  our  Eastern  Mediterranean  project, 

strengthened  the  portfolio  and 

improved  our  financial 

capability.  This  past  year,  we  continued  our  focus  on  

allocating  capital 

to 

the  highest-return,  high-margin 

TRANSFORMATIVE YEAR

Throughout  the  year,  we  successfully  repositioned  our  

onshore  portfolio  to  focus  on  the  high-return,  higher- 

margin  DJ  Basin,  Delaware  Basin  and  Eagle  Ford  Shale  and  

further  fortified  our  balance  sheet  by  divesting  non-core 

assets. This included the sale of our Marcellus Shale assets to 

focus on liquids-rich investment opportunities. A noteworthy 

achievement for the year was the acquisition and successful 

integration  of  Clayton  Williams  Energy,  which  significantly 

increased Noble Energy’s leading position in the Southern 

Delaware Basin. 

In  addition  to  strengthening  and  expanding  our  U.S. 

opportunities. 

While  we  have  seen  unprece- 

dented  shifts 

in  energy 

industry 

dynamics  over  recent  years,  our 

corporate  strategy  and  premier 

portfolio  are  built 

to  adapt 

to 

commodity cycles and deliver strong 

returns. 

This 

year  marked 

the 

85th 

anniversary  of  Noble  Energy  and 

while  we  look  to  the  future,  it’s 

important  to  recognize  how  far  we 

As the company has grown into 

a leading independent energy 

producer, we remain guided by 

our core values and unwavering 

onshore  portfolio,  we  sanctioned, 

commenced  development  of  and 

significantly  progressed  our  next 

world-class  Eastern  Mediterranean 

project  –  Leviathan  –  which  will 

generate natural gas margins rivaling 

the  best  U.S.  onshore  oil  areas  and 

a  substantial,  dependable  cash  flow 

respect for communities, land, 

stream for decades to come. 

and protecting natural resources.

ACHIEVING OPERATIONAL 
AND FINANCIAL GOALS

With  our  extensive  database  of 

have  come  since  1932.  As  the  company  has  grown  into  a 

leading  independent  energy  producer,  we  remain  guided 

by our core values and unwavering respect for stakeholders, 

communities,  land  and  protecting  natural  resources.  The 

combination  of  our  top-tier  assets,  operational  excellence 

and  financial  strength  continue  to  be  the  foundation  of 

our success.

horizontal  wells  drilled  and  completed  across  the  U.S., 

Noble  Energy  is  at  the  forefront  of  advancing  drilling  and 

completion  designs  in  the  industry.  This  past  year  marked 

significant  advancements  and  execution  success  in  our 

U.S.  onshore  program  as  we  set  new  drilling  records,  drove 

down  unit  controllable  costs  and  demonstrated 

that  

we  could  increase  productivity  in  each  of  our  core  areas. 

Utilizing  superior  technology,  our  advanced  analytics  arm 

us  with  real-time  information  and  enable  rapid  well  design 

modifications. With a sharp focus on continuous improvement 

FOCUSED ON DRIVING  
SUSTAINABLE SHAREHOLDER VALUE 

and  innovation,  we  anticipate  even  greater  drilling  and  

completion efficiencies in 2018 and beyond. 

We have a differential opportunity to realize value through our 

premier upstream and midstream assets in the Delaware and 

DJ Basins. Notably, the substantial ramp-up in cash flows and 

volumes  from  our  high-margin  U.S.  onshore  assets  reflects 

Looking ahead, Noble Energy is executing a solid strategy and 

working to deliver superior results for all stakeholders. To drive 

shareholder value, we have been at the forefront of aligning 

our compensation incentive plans with shareholder interests. 

We  will  continue  to  create  value  by  further  developing  our 

high-return, high-margin U.S. onshore assets and supplying 

natural  gas  from  the  Eastern  Mediterranean  to  meet  the 

the  exceptional  performance  we 

delivered.  Our  midstream  assets 

provide 

tremendous  operational 

advantages  and  we  demonstrated 

the  value  with  our  inaugural  drop 

down  from  Noble  Energy  to  Noble 

Midstream Partners LP in 2017.

ENVIRONMENTAL, SOCIAL AND  
GOVERNANCE LEADERSHIP 

At  Noble  Energy,  we  are  committed 

to 

corporate 

responsibility 

in 

all  we  do.  For  six  years  now,  we 

have  continued  to  enhance  our 

ever-growing 

regional  demand. 

Durability  and 

the  geographic 

diversity of our portfolio support the 

strategy,  investment  decisions  and 

commitment to our core business.  

Our 

asset  quality,  unmatched 

operational  excellence  and  robust 

financial  strength  provide  a  clear 

line  of  sight  to  top-tier  cash  flow 

growth  over 

the  next 

several 

years.  Our  objective  is  to  deliver 

corporate  returns  that  will  retain 

and  attract 

investors  across  all 

disclosures  on  environment,  safety,  people,  communities, 

sectors.  Our  board  recently  affirmed  our  commitment 

transparency  and  governance  in  our  annual  Sustainability 

to  enhancing  and  accelerating  shareholder  value  with 

Report. To further  our commitment to our communities, this 

approval  of  a  share  repurchase  program  and  we  anticipate 

year marked our inaugural Global Day of Caring, during which 

dividend growth based on our expected cash flow expansion.

nearly  1,000  Noble  Energy  employees  supported  the  needs  

of local communities across the globe. As part of this event, 

our volunteer efforts in the Houston area amplified our recent 

financial  contributions  to  help  our  hometown  recover  from 

Hurricane Harvey. 

Exceptional  safety  performance  is  core  to  our  business 

and  we  are  once  again  proud  of  our  efforts.  Among  many 

notable  achievements,  we  set  a  new  record  for  consecutive 

MOVING TOWARDS THE FUTURE

Today, Noble Energy is stronger than ever, with diverse assets 

that  enable  us  to  deliver  long-term  value.  I  would  like  to 

thank  everyone  on  the  talented  Noble  Energy  team,  whose 

contributions  allow  us  to  create  that  value  for  our  most 

important  constituents:  our  shareholders,  business  partners 

and  employees.  I  look  forward  to  our  journey  together 

and  appreciate  your  continued  trust  and  confidence  in  

days  without  a  recordable  safety  incident  across  our  global 

our company. 

upstream operations. 

Regarding  governance,  the  Noble  Energy  board  of  directors  

plays a key role in the oversight of the company’s business and 

strategy. The board’s Corporate Governance and Nominating 

Committee is dedicated to bringing additional insight to our 

board  and  ensuring  it  remains  best  equipped  to  meet  the 

challenges  of  the  fast-moving  global  business  environment 

in  which  we  operate.  In  October,  the  board  welcomed  

Holli C. Ladhani as a director. She brings invaluable executive 

leadership and expertise in energy services and finance.  

David L. Stover  
Chairman, President and CEO

Exceptional Portfolio

Delaware 
Basin
 p Strong oil-rich  

position 

 p 2017 Sales Volumes:  

26 MBoe/d

Gulf of Mexico
 p Proven track record
 p 2017 Sales Volumes: 

26 MBoe/d

Israel
 p Doubling gross gas  

regional deliverability
 p 2017 Sales Volumes:  

46 MBoe/d

Equatorial 
Guinea
 p Maximizing production 
 p 2017 Sales Volumes:  

65 MBoe/d

DJ Basin
 p Maximizing operational 

efficiencies 

 p 2017 Sales Volumes: 

110 MBoe/d

Eagle Ford 
Shale
 p Substanstial cash flow 
 p 2017 Sales Volumes:  

 70 MBoe/d

Reflects currently producing assets

Transformative Year

 Excludes Marcellus Shale sales volumes prior to divestment in June 2017



Financial Results

2017

2016

2015

2014

2013

686 

7,680 

1,965

195 

1,118 

381

49.73

3.01

$

$

$

$

$

$

$

$

552 

5,308 

1,437

186 

1,397

420

40.39

2.42

$

$

$

$

$

$

$

$

496 

5,549 

1,421

158 

1,187 

355

45.00

2.44

$

$

$

$

$

$

$

$

432 

5,833 

1,404

133 

992 

298

91.58 

3.38

$

$

$

$

$

$

$

$

435 

5,828 

1,406

123 

901 

273

100.29 

2.97

2017

2016

2015

2014

2013

4,256

(1,118)

(2.38)

469

0.40

1,951

3,249

21,476

$ 

6,859

$

10,619

39%

$

$

$

$

$

$

$

$ 

$

3,491

(998)

(2.32)

430

0.40

1,351

1,339

21,011

7,114

9,600

43%

$

$

$

$

$

$

$

3,183

(2,441)

(6.07)

402

0.72

2,062

2,852

24,196

$

$

$

$

$

$

$

5,115 

1,214

3.27

367

0.68

3,506

4,883

22,518

$ 

7,976

$ 

6,197

$

10,370

$

10,325

43%

38%

$

$

$

$

$

$

$

$ 

$

5,015 

978

2.69

363

0.55

2,937

4,311

19,642

4,843

9,184

35%

$

$

$

$

$

$

$

$

$

$

$

$

OPERATING DATA
Year-end Proved Reserves

Liquids (MMBbls)

Natural Gas (Bcf)

Total (MMBoe)

Sales Volumes from Continuing Operations
Liquids (MBbl/d)1

Natural Gas (MMcf/d)

Total (MBoe/d)

Average Sales Price
Crude Oil and Condensate  (per Bbl)

Natural Gas (per Mcf)

FINANCIAL DATA
(In millions, except per share amounts and ratios)

Revenues

Net (Loss) Income Attributable to Noble Energy

Net (Loss) Income per Share Diluted 2

Weighted Average Shares Diluted 2

Cash Dividends per Share2

Net Cash Provided by Operating Activities

Capital Expenditures 3

Total Assets

Total Debt

Shareholders’ Equity

Total Debt-to-Book-Capital Ratio

1  Includes equity method volumes

2  Amounts adjusted for the 2-for-1 stock split which occurred in 2013

3  Represents Noble Energy-funded expenditures, excludes capital lease accruals and corporate acquisitions

Table of Contents
Index to Financial Statements

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM 10-K
 ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the fiscal year ended December 31, 2017 
or

 TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 

For the transition period from          to          

Commission file number: 001-07964

NOBLE ENERGY, INC.

(Exact name of registrant as specified in its charter)

Delaware
(State of incorporation)
1001 Noble Energy Way
Houston, Texas
(Address of principal executive offices)

73-0785597
(I.R.S. employer identification number)

77070
(Zip Code)

(281) 872-3100
(Registrant’s telephone number, including area code)
Securities registered pursuant to Section 12(b) of the Act:

Title of each class
Common Stock, $0.01 par value

Name of each exchange on which registered
New York Stock Exchange

Securities registered pursuant to Section 12(g) of the Act: None 

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. 

 Yes 

 No 

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. 

 Yes 

 No 

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange 
Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been 

subject to such filing requirements for the past 90 days. 

 Yes 

 No 

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data 
File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months 

(or for such shorter period that the registrant was required to submit and post such files). 

 Yes 

 No 

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§ 229.405 of this chapter) is not contained 
herein, and will not be contained, to the best of the registrant’s knowledge, in definitive proxy or information statements incorporated by 

reference in Part III of this Form 10-K or any amendment to this Form 10-K. 

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting, or an 
emerging growth company. See definitions of “large accelerated filer”, “accelerated filer”, “smaller reporting company”, and “emerging 
growth company” in Rule 12b-2 of the Exchange Act. (Check one):

Large accelerated filer 

Accelerated filer 

Non-accelerated filer 

Smaller reporting company 

Emerging growth company 

(Do not check if a smaller reporting company)

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying 
with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  

 Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).

 Yes 

 No

Aggregate market value of Common Stock held by nonaffiliates as of June 30, 2017: $13.8 billion.

Number of shares of Common Stock outstanding as of December 31, 2017: 486,902,907.

 
 
 
 
 
 
 
 
 
 
Table of Contents
Index to Financial Statements

DOCUMENTS INCORPORATED BY REFERENCE
Portions of the Registrant’s definitive proxy statement for the 2018 Annual Meeting of Stockholders to be held on April 24, 2018, which will 
be filed with the Securities and Exchange Commission within 120 days after December 31, 2017, are incorporated by reference into Part III.

Table of Contents
Index to Financial Statements

Items 1. and 2. Business and Properties
Item 1A.
Item 1B.
Item 3.
Item 4.

Risk Factors
Unresolved Staff Comments
Legal Proceedings
Mine Safety Disclosures

TABLE OF CONTENTS

PART I

PART II

Item 5.

Item 6.
Item 7.
Item 7A.
Item 8.
Item 9.
Item 9A.
Item 9B.

Item 10.
Item 11.
Item 12.
Item 13.
Item 14.

Item 15.
Item 16.

Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity 
Securities
Selected Financial Data
Management’s Discussion and Analysis of Financial Condition and Results of Operations
Quantitative and Qualitative Disclosures About Market Risk
Financial Statements and Supplementary Data
Changes in and Disagreements with Accountants on Accounting and Financial Disclosure
Controls and Procedures
Other Information

PART III

Directors, Executive Officers and Corporate Governance
Executive Compensation
Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters
Certain Relationships and Related Transactions, and Director Independence
Principal Accounting Fees and Services

Exhibits, Financial Statement Schedules
Form 10-K Summary

PART IV

2
34
50
50
50

50
53
55
86
88
153
153
153

154
154
154
154
154

154
160

Table of Contents
Index to Financial Statements

Disclosure Regarding Forward-Looking Statements 

This Annual Report on Form 10-K and the documents incorporated by reference in this report contain forward-looking 
statements within the meaning of the federal securities laws. Forward-looking statements give our current expectations or 
forecasts of future events. 

These forward-looking statements include, among others, the following: 

• 
• 
• 
• 

• 
• 

our growth strategies;
our future results of operations;
our liquidity and ability to finance our exploration and development activities;
our ability to successfully and economically explore for and develop crude oil, natural gas and natural gas liquids 
(NGLs) resources;
anticipated trends in our business;

• 
•  market conditions in the oil and gas industry;
• 

the impact of governmental fiscal regulation, including federal, state, local, and foreign host tax regulations, and/or 
terms, such as that involving the protection of the environment or marketing of production, as well as other regulations; 
our ability to make and integrate acquisitions; and
access to resources.

Forward-looking statements are typically identified by use of terms such as “may,” “will,” “expect,” “believe,” “anticipate,” 
“estimate,” “intend,” and similar words, although some forward-looking statements may be expressed differently. These 
forward-looking statements are made based upon management’s current plans, expectations, estimates, assumptions and beliefs 
concerning future events impacting us and therefore involve a number of risks and uncertainties. We caution that forward-
looking statements are not guarantees and that actual results could differ materially from those expressed or implied in the 
forward-looking statements. You should consider carefully the statements under Item 1A. Risk Factors and other sections of 
this report, which describe factors that could cause our actual results to differ from those set forth in the forward-looking 
statements.

Items 1. and 2.  Business and Properties

PART I

In this report, unless otherwise indicated or where the context otherwise requires, information includes that of Noble Energy, 
Inc. and its subsidiaries (Noble Energy, the Company, we or us). All references to production, sales volumes and reserves 
quantities are net to our interest unless otherwise indicated. For a summary of commonly used industry terms and abbreviations 
used in this report, see the Glossary, located at the end of this report.

Noble Energy is an independent crude oil and natural gas exploration and production company with a diversified high-quality 
portfolio spanning three continents. Founded in 1932, Noble Energy is a Delaware corporation, incorporated in 1969, and has 
been publicly traded on the New York Stock Exchange (NYSE) since 1980. We have a unique history of growth, evolving from 
a regional crude oil and natural gas producer to a global exploration and production company included in the Standard & Poor's 
500 (S&P 500). 
Our purpose, Energizing the World, Bettering People's Lives®, reflects our commitment to find and deliver affordable energy 
through crude oil, natural gas and NGL exploration and production while living our commitment to contribute to the betterment 
of people's lives in the communities in which we operate. We strive to build trust through stakeholder engagement, act on our 
values, provide a safe work environment, respect our environment and care for our employees and the communities where we 
operate.

Our portfolio of assets is diversified through US and international projects and production mix among crude oil, natural gas, 
and NGLs. In particular, our business is focused on both US unconventional basins and certain global offshore conventional 
basins. In US onshore unconventional basins, we have demonstrated competence in applying geological, drilling, completion, 
and midstream design and operational expertise. In US onshore, we typically apply a major project development concept to an 
unconventional basin by utilizing an Integrated Development Plan (IDP) approach. In the global offshore, we have had notable 
exploration and major project successes over the past twelve years, which have led to production from numerous offshore 
major development projects which have provided long-lived cash flows to our business. 

Approximately 70% of our 2018 capital program is allocated to US onshore development, primarily focused on liquids-rich 
opportunities in the Denver-Julesburg (DJ) Basin, Delaware Basin and Eagle Ford Shale. Eastern Mediterranean capital 
expenditures, including initial development costs associated with the Leviathan project, represent more than 25% of the total. 
The remaining portion of our 2018 capital program is designated for exploration for lease acquisition, seismic and other 

2

geological analysis in support of future exploration prospects for potential development post 2020, as well as other corporate 
activities.

In addition, the majority of our assets are held by production, which allows for further investment and financial flexibility.  
Occasional strategic acquisitions of producing or non-producing properties, combined with the periodic divestment of assets, 
have allowed us to pursue our objective of a well-positioned and diversified portfolio to maximize strategic value. 

Oil and Gas Properties and Activities  We search for crude oil and natural gas properties onshore and offshore, and seek to 
acquire exploration rights and conduct exploration activities in areas of interest. Our activities include geophysical and 
geological evaluation; analysis of commercial, regulatory and political risks; and exploratory and development drilling leading 
to production, where appropriate. 

Our current portfolio consists primarily of interests in developed and undeveloped crude oil and natural gas leases and 
concessions. These properties contribute all of our crude oil, natural gas and NGL production, provide continual investment 
opportunities in proved areas, and offer further exploration opportunities. Our new venture areas provide frontier exploration 
opportunities, which may result in the establishment of new operational areas in the future. We also own or invest in midstream 
assets primarily used in the processing and transportation of our US onshore production. See Midstream - Properties and 
Activities, below. 

The map below illustrates the locations of our significant crude oil and natural gas exploration and production activities:

Reportable Segments  We manage our operations by geographic region and the nature of the products and services we offer. 
Our reportable segments include: United States (US onshore and Gulf of Mexico); Eastern Mediterranean (Israel and Cyprus); 
West Africa (Equatorial Guinea, Cameroon and Gabon); Other International (Newfoundland, Suriname, and other new 
ventures); and Midstream.

The geographical reportable segments are in the business of crude oil and natural gas exploration, development, production, 
and acquisition (Oil and Gas Exploration and Production, or E&P). The Midstream reportable segment owns, operates, 
develops and acquires domestic midstream infrastructure assets with current focus areas being the DJ and Delaware Basins. 
Expenses related to debt, headquarters depreciation and corporate general and administrative cost are recorded at the corporate 
level. See Item 8. Financial Statements and Supplementary Data – Note 14.  Segment Information. 

Development Activities  Our development projects have resulted from both exploration success as well as periodic strategic 
acquisitions. These projects provide opportunities for growth at attractive financial returns. Each project progresses, as 
appropriate, through the various development phases including appraisal, engineering and design, development drilling, 
construction and production. While development projects require significant capital investments, typically over a multi-year 
period, they are expected to offer sustained cash flows, while on production. 

In US onshore, our low production-risk development programs are centered around IDPs and generate efficiencies for upstream 
and midstream development. IDPs are generally areas of highly contiguous acreage, typically held by production, that 

3

accommodate drilling long lateral wells, and other operational synergies. The approach also benefits from the ability to 
accommodate a flexible capital investment program that can be varied in response to changes in the commodity price 
environment. We continue to enhance project performance in these areas through technology and operational efficiencies. 

Offshore, we engage in long-cycle development projects, such as progressing the first phase of development at the Leviathan 
natural gas field, offshore Israel, the largest natural gas discovery in our history. Our development activities are discussed in 
more detail in the sections below. 

Divestiture and Acquisition Activities  We maintain an ongoing portfolio management program. Accordingly, we may 
periodically divest assets through asset or equity sales, exchanges or other transactions. During 2017, we closed several 
transformative portfolio transactions, demonstrating our continued focus on enhancing profit margins and company returns. We 
generated cash of $2.1 billion from asset sales, including divestiture of the Marcellus Shale upstream assets, as well as other 
non-strategic US onshore assets. Periodically, we may also engage in acquisitions of additional crude oil or natural gas 
properties and related assets through either direct acquisitions of the assets or acquisitions of entities that own the assets. For 
example, we completed the acquisition (Clayton Williams Energy Acquisition) of Clayton Williams Energy, Inc. (Clayton 
Williams Energy) in 2017 and the merger (Rosetta Merger) of Rosetta Resources Inc (Rosetta) in 2015. See Item 7. 
Management’s Discussion and Analysis of Financial Condition and Results of Operations – Liquidity and Capital Resources, 
Item 8. Financial Statements and Supplementary Data - Note 3. Clayton Williams Energy Acquisition, and Item 8. Financial 
Statements and Supplementary Data – Note 4.  Acquisitions, Divestitures and Merger. 

Exploration Activities  We primarily focus on organic growth from exploration and development drilling activities, 
concentrating on existing basins or plays where we believe we have strategic competitive advantages or in new basins with 
attractive geological potential and the opportunity for attractive financial returns. These advantages are derived from 
proprietary seismic data and operational expertise, which we believe will generate superior returns over the oil and gas business 
cycle. We have had substantial historic exploration success in the Gulf of Mexico, the Levant Basin offshore Eastern 
Mediterranean and the Douala Basin offshore West Africa, resulting in the successful completion of numerous major 
development projects. In 2017, we performed limited exploration activities due to the commodity price environment.

Proved Oil and Gas Reserves  Proved reserves at December 31, 2017 were as follows:

Reserves Category
Proved Developed
United States
Israel
Equatorial Guinea
Total Proved Developed Reserves
Proved Undeveloped
United States
Israel
Total Proved Undeveloped Reserves
Total Proved Reserves

December 31, 2017
Proved Reserves

Crude Oil 
and
Condensate
(MMBbls)

NGLs

Natural
Gas

(MMBbls)

(Bcf)

Total
(MMBoe) (1)

176
3
29
208

243
6
249
457

119
—
11
130

99
—
99
229

983
1,793
411
3,187

838
3,655
4,493
7,680

458
302
108
868

482
615
1,097
1,965

(1)       Million barrels oil equivalent. Natural gas is converted on the basis of six Mcf of gas per one barrel of crude oil equivalent. This ratio 
reflects an energy content equivalency and not a price or revenue equivalency. Given commodity price disparities, the price for a barrel of 
crude oil equivalent for US natural gas and NGLs is significantly less than the price for a barrel of crude oil. In Israel, we sell natural gas 
under contracts where the majority of the price is fixed, resulting in less commodity price disparity. 

Our proved reserves totaled 1,965 MMBoe as of December 31, 2017 as compared with 1,437 MMBoe as of December 31, 
2016. Changes included the following:

• 

• 

revisions of 135 MMBoe, including positive revisions of 105 MMBoe driven by performance related to the US 
onshore horizontal drilling programs and offshore Israel associated with the enhanced geologic modeling across the 
Tamar reservoir, as well as an increase of 30 MMBoe driven by positive price revisions;

extensions, discoveries and other additions of 736 MMboe, including additions of 551 MMBoe related to the sanction 
of the first phase of development of the Leviathan natural gas project, as well as extensions of 185 MMBoe related to 
US onshore horizontal drilling programs due to successful expansion of our extended reach lateral well programs;

• 

acquisition of 57 MMBoe primarily related to the Clayton Williams Energy Acquisition;

4

 
 
 
 
 
 
 
 
 
offset by: 

• 

• 

production volumes of 139 MMBoe; and

divestiture of reserves of 261 MMBoe, primarily due to the Marcellus Shale upstream divestiture and other smaller US 
onshore divestitures.

Our proved reserves are 48% US and 52% international, and the commodity mix is 35% global liquids (crude oil and NGLs), 
50% international natural gas and 15% US natural gas.

See Proved Reserves Disclosures, below, and Item 8. Financial Statements and Supplementary Data – Supplemental Oil and 
Gas Information (Unaudited) for further discussion of proved reserves.

Oil and Gas Exploration and Production - Properties and Activities

United States

We have been engaged in crude oil, natural gas and NGL exploration and development activities throughout US onshore since 
1932 and in the Gulf of Mexico since 1968. US operations accounted for 72% of 2017 total consolidated sales volumes and 
48% of total proved reserves at December 31, 2017. Approximately 45% of the proved reserves in the US is crude oil and 
condensate, 32% is natural gas and 23% is NGLs.

Sales volumes and proved reserves estimates for our US operating areas were as follows: 

Year Ended December 31, 2017
Sales Volumes

December 31, 2017
Proved Reserves

Crude Oil 
&
Condensate

(MBbl/d)

59
17
11
1
21
2
111

NGLs

(MBbl/d)
19
4
28
5
2
—
58

Natural
Gas

(MMcf/d)
193
24
186
174
21
9
607

Total

(MBoe/d)
110
26
70
34
26
4
270

Crude Oil 
&
Condensate

(MMBbls)
203
166
29
—
18
3
419

NGLs

(MMBbls)
99
38
79
—
2
—
218

Natural
Gas

(Bcf)
1,094
199
501
—
21
6
1,821

Total

(MMBoe)
484
238
191
—
23
4
940

DJ Basin
Delaware Basin
Eagle Ford Shale
Marcellus Shale (1)
Gulf of Mexico
Other US Onshore
Total

(1) We divested our Marcellus Shale upstream assets in second quarter 2017. 

Wells completed in 2017 and productive wells at December 31, 2017 for our US operating areas were as follows: 

DJ Basin
Delaware Basin
Eagle Ford Shale
Gulf of Mexico
Other US Onshore
Total

Year Ended
December 31, 2017
Gross Wells 
Completed
or Participated in 
138
75
47
—
12
272

December 31, 2017

Gross Productive
Wells

6,226
1,898
344
14
1
8,483

5

 
 
 
 
 
 
Table of Contents
Index to Financial Statements

US Onshore

Our US onshore operations are located in proven basins with long-life production profiles. These assets provide low 
production-risk drilling opportunities in liquids-rich areas that offer predictable and long-term production and cash flow growth 
at attractive financial returns. Locations of our US onshore operations as of December 31, 2017 are shown on the map below: 

DJ Basin   In 2017, we focused our drilling and development activity in the Wells Ranch and East Pony areas that produce a 
high oil mix. The IDP concept allows us to consolidate processing and handling infrastructure across large areas (typically 
30,000 to 80,000 acres). Our IDP approach has provided an opportunity to efficiently and economically support production 
growth by leveraging infrastructure, such as gas, oil and water, including both fresh and produced water, assets. 

2017 Activity   Operationally, our focus on drilling longer laterals and obtaining better results from enhanced completions has 
led to stronger new well performance. Coupled with expansion of midstream infrastructure and execution of synergies as well 
as prudent management of costs, we are delivering enhanced profit margin returns. During the year, we completed 103 
horizontal wells and 101 wells initiated production. We also participated in approximately 35 non-operated development wells 
during 2017. 

As part of ongoing portfolio management, we entered into an agreement to divest approximately 30,200 net acres, the majority 
of which were undeveloped, in the Greeley Crescent area of Weld County, Colorado for $608 million. We received proceeds of 
$568 million at closing and expect to receive the remaining proceeds in mid-2018. As part of the transaction, all of the acreage 
in the Greeley Crescent Bronco IDP remains subject to dedications to Noble Midstream Partners LP (Noble Midstream 
Partners) for crude oil gathering, and produced and fresh water services. 

Since 2015, we have been working with the State of Colorado to improve emission control systems as required under a joint 
consent decree (Consent Decree). Overall compliance with the Consent Decree has resulted in the temporary shut-in and 
permanent plugging and abandonment of certain wells, the majority of which are vertical, and associated tank batteries. Costs 
associated with these abandonment activities will be incurred over several years. 

We exited 2017 with one drilling rig and intend to increase to two rigs in 2018. Our current 2018 development program 
contemplates expansion into the Mustang IDP area where we have a large, contiguous acreage position.

Delaware Basin   Our Delaware Basin position was significantly transformed in 2017 with the closing of the Clayton Williams 
Energy Acquisition on April 24, 2017, adding 71,000 highly contiguous net acres in the core of the Delaware Basin adjacent to 
our Reeves County holdings. We also executed strategic leasing initiatives and entered into a bolt-on acquisition, for $295 
million, which closed in January 2017, adding additional production near our producing properties and increasing our 

6

Table of Contents
Index to Financial Statements

contiguous acreage position in the Reeves County area. As of December 31, 2017, we held approximately 117,000 net acres in 
the Delaware Basin.

2017 Activity   In 2017, we successfully integrated the Clayton Williams Energy assets and initiated execution of the Delaware 
Basin IDP with a focus on long laterals, pad drilling, multi-zone completions and infrastructure development. As demonstrated 
in the DJ Basin, our IDP approach provides an opportunity to more efficiently and economically develop our acreage.

We successfully transformed our 2017 development program's focus from a single well development approach to an IDP to 
capture the full resource potential for the Delaware Basin. This was achieved with eight pads that developed multiple zones 
within the Wolfcamp A formation zone, including two pads that successfully included the shallower 3rd Bone Springs 
zone. With successful wells in the deeper Wolfcamp zones, as well as expanded understanding of the resource potential and our 
IDP approach, we are well positioned to efficiently and economically develop our acreage over future years.

We began 2017 with three drilling rigs and exited the year with six drilling rigs. During the year, we completed 45 wells and 
commenced production on 44 wells, of which 23 were multi-zone pads. We also participated in approximately 30 non-operated 
development wells during 2017. In addition, we added two central gathering facilities (CGFs). 

For 2018, we will continue asset development through long laterals, pad drilling, multi-zone development and an infrastructure 
build-out initiative that will include an additional three CGFs. 

Eagle Ford Shale   We hold approximately 35,000 net acres located in the highly prolific liquids-rich area of the play, 
including producing assets in Webb and Dimmit counties. Since acquiring these assets, we have continued to apply IDP 
learnings and enhancements to optimize development of these assets, including optimizing drilling and completion designs 
through testing varying clusters per stage, lateral lengths, and proppant quantities to increase investment efficiency. We have 
also focused on testing co-development of both the Upper and Lower Eagle Ford formation zones utilizing our IDP approach.

2017 Activity   Our 2017 capital program was focused within Webb and Dimmit counties where we operated up to two drilling 
rigs, completed 47 horizontal wells and commenced production on 49 horizontal wells. All wells drilled during 2017 were on 
multi-well pads leveraging centralized infrastructure. We also sold certain assets located in Gonzales and DeWitt counties, 
where we had not engaged in drilling activities since the completion of the merger (Rosetta Merger) with Rosetta Resources 
Inc. (Rosetta) and received proceeds of $45 million.

We exited 2017 with a two rig drilling program. Our capital program in 2018 focuses on developing the Upper and Lower 
Eagle Ford formation zones within the Gates Ranch area. 

Marcellus Shale   On June 28, 2017, we closed the sale of the Marcellus Shale upstream assets, receiving net proceeds of $1.0 
billion and recorded a loss on sale of $2.38 billion. The divestment enables us to further focus our organization on our highest-
return areas that are expected to deliver production and cash flow growth. 

See Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations – Liquidity and Capital 
Resources and Item 8. Financial Statements and Supplementary Data – Note 4.  Acquisitions, Divestitures and Merger. 

7

Table of Contents
Index to Financial Statements

Gulf of Mexico   Locations of our operations in the Gulf of Mexico as of December 31, 2017 are shown on the map below:

We have several producing fields and an inventory of identified prospects, which are a combination of both high impact subsalt 
prospects and smaller tie-back opportunities. These prospects are subject to an ongoing technical maturation process and may 
or may not emerge as drillable options. 

We currently hold leases on approximately 63 deepwater blocks, representing approximately 52,000 net developed acres and 
approximately 171,000 net undeveloped acres. We are the operator on nearly 80% of our leases. 

Subsequent Event   On February 15, 2018, we announced the Company signed a definitive agreement to sell its assets in the 
Gulf of Mexico.  See Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations – 
Executive Overview and Item 8. Financial Statements and Supplementary Data – Note 4.  Acquisitions, Divestitures and 
Merger.

2017 Activity   Our activity in 2017 primarily focused on optimizing production and progressing our Katmai project. See 
Offshore Producing Properties and Update to Gulf of Mexico Major Projects, below. 

During 2017, we completed our geological evaluation of certain leases and determined that several leases, representing $60 
million of undeveloped leasehold cost, should be impaired and expensed. 

We have remaining capitalized undeveloped leasehold cost of approximately $44 million related to prospects that have not yet 
been drilled. Leases representing over 60% of this cost are scheduled to expire over the years 2018 to 2020. In addition, some 
leases may become impaired if production is not established or should we not take action to extend the terms of the leases. As a 
result of our exploration activities, capitalized undeveloped leasehold costs could become impaired. See Item 7. Management's 
Discussion and Analysis of Financial Condition and Results of Operations – Operating Outlook – Potential for Future 
Impairments.

Offshore Producing Properties   

Gunflint (Mississippi Canyon Block 948; 31% operated working interest)   Gunflint is a 2008 crude oil discovery, utilizing a 
two-well subsea tieback to the Gulfstar 1 spar platform. Production commenced in July 2016 and the development contributed 
7 MBoe/d of sales volumes in 2017. 

Rio Grande Development including Big Bend (Mississippi Canyon Block 698; 54% operated working interest) and Dantzler 
(Mississippi Canyon Block 782; 45% operated working interest)   The Rio Grande crude oil development project consists of a 
single producing well from Big Bend, a 2012 crude oil discovery, and two producing wells from Dantzler, a 2013 crude oil 
discovery, flowing to the Thunder Hawk platform for which we assumed operatorship in 2016. The Rio Grande development 
commenced production in October 2015 and contributed an average of 12 MBoe/d of sales volumes in 2017.

Galapagos Development Project including Isabela (Mississippi Canyon Block 562; 33.33% non-operated working interest), 
Santa Cruz (Mississippi Canyon Blocks 519/563; 23.25% operated working interest) and Santiago (Mississippi Canyon Block 

8

 
Table of Contents
Index to Financial Statements

519; 23.25% operated working interest)   The Galapagos crude oil development project consists of Isabela, a 2007 discovery, 
Santa Cruz, a 2009 discovery, and Santiago, a 2011 discovery. The Galapagos development began producing in 2012 and is 
connected to existing infrastructure through subsea tiebacks. A well stimulation commenced in the fourth quarter of 2017 to 
enhance recovery. The Galapagos project contributed an average of 4 MBoe/d of sales volumes in 2017.

Swordfish (Viosca Knoll Blocks 917; 961 and 962; 85% operated working interest)   Swordfish is a 2001 crude oil discovery 
and began producing in 2005. The Swordfish project currently includes two producing wells flowing to the Neptune Spar, our 
100%-owned floating offshore production platform, and contributed an average of 3 MBoe/d of sales volumes in 2017. We 
currently plan to begin abandonment activities in 2019.

Ticonderoga (Green Canyon Block 768; 50% non-operated working interest)   Ticonderoga is a 2004 crude oil discovery and 
began producing in 2006. The project currently includes two producing wells, which contributed an average of 1 MBoe/d of 
sales volumes in 2017. These properties are connected to existing infrastructure through subsea tiebacks.

Update to Gulf of Mexico Major Projects 

Katmai (Green Canyon Block 40; 50% operated working interest)   During 2014, we announced successful final well results at 
the Katmai exploratory well. Katmai was drilled to a total depth of 27,900 feet in 2,100 feet of water. Wireline logging data 
indicated a total of 154 net feet of crude oil pay discovered in multiple reservoirs, including 117 net feet in Middle Miocene and    
37 net feet in Lower Miocene reservoirs. In 2016, we spud our Katmai 2 appraisal well (38% operated working interest), 
located in Green Canyon Block 39, and encountered high pressure in the untested fault block. In response, we temporarily 
abandoned the well and are assessing plans to complete appraisal as well as development scenarios for the Katmai project. 

Troubadour (Mississippi Canyon Block 699; 60% operated working interest)   Troubadour was a 2013 natural gas discovery. In 
2017, we determined that the asset was impaired in the current forward outlook for natural gas prices and development 
scenarios, and charged $63 million to impairment of oil and gas properties and $5 million to undeveloped leasehold impairment 
expense.

Regulatory Environment   Various federal agencies overseeing certain of our activities in the Gulf of Mexico have adopted new 
regulations and are considering others. See Regulations - US Offshore Regulatory Developments below, and Item 1A. Risk 
Factors. 

International

Our international business focuses on offshore opportunities in a number of countries and diversifies our portfolio. 
Development projects in the Eastern Mediterranean and West Africa have contributed substantially to our production and cash 
flow growth over the last decade. Previous exploration successes in these areas have also identified additional multiple major 
development projects that have the potential to contribute to long-term production and cash flow growth in the future.

During 2017, we progressed development of offshore Israel assets by completing the Tamar 8 development well and 
commencing drilling activities for the Leviathan 5 development well. In addition, we advanced our Eastern Mediterranean 
regional natural gas export opportunities by progressing multiple natural gas sales and purchase agreements (GSPAs). See 
Eastern Mediterranean (Israel and Cyprus) and West Africa (Equatorial Guinea, Cameroon and Gabon), below.

Operations in Equatorial Guinea, Cameroon, Gabon, Cyprus, and Suriname are conducted in accordance with the terms of 
Production Sharing Contracts (PSCs). Operations in Israel, Newfoundland (Canada) and other foreign locations are conducted 
in accordance with concession agreements, permits or licenses. See Item 1A. Risk Factors.

9

Table of Contents
Index to Financial Statements

Sales volumes and proved reserves estimates for our international operating areas were as follows:

Year Ended December 31, 2017
Sales Volumes

December 31, 2017
Proved Reserves

Crude Oil 
&
Condensate
(MBbl/d)

NGLs
(MBbl/d)

Natural
Gas
(MMcf/d)

Total
(MBoe/d)

Crude Oil 
&
Condensate
(MMBbls)

NGLs
(MMBbls)

Natural
Gas (1)
(Bcf)

Total
(MMBoe)

International
Israel
Equatorial Guinea
Total International
Equity Investee
Total
Equity Investee Share of Methanol Sales (MMgal)

—
—
—
6
6

—
18
18
2
20

272
239
511
—
511

46
57
103
8
111
163

9
29
38
—
38

—
11
11
—
11

5,448
411
5,859
—
5,859

917
108
1,025
—
1,025

(1)    Includes 3.3 Tcf proved undeveloped reserves related to initial Leviathan field development offshore Israel.

Wells completed in 2017 and productive wells at December 31, 2017 in our international operating areas were as follows:

International
Israel
Equatorial Guinea
Total International

Year Ended December 31, 2017
Gross Wells Completed
or Participated in (1)

December 31, 2017
Gross Productive
Wells

1
—
1

7
28
35

(1)  Excludes the Araku-1 exploration well, offshore Suriname.

Eastern Mediterranean (Israel and Cyprus)  One of our operating areas is the Eastern Mediterranean, where we have 
identified the existence of substantial natural gas resources since we obtained our first exploration license offshore Israel in 
1998.

Israel, the only producing country in our Eastern Mediterranean area, contributed an average of 272 MMcf/d of natural gas 
sales volumes in 2017, representing approximately 12% of total consolidated sales volumes, primarily from the Tamar field. 
With the addition of proved undeveloped reserves associated with Leviathan field development in 2017, Israel represented 
approximately 47% of total proved reserves at December 31, 2017. Our leasehold position in the Eastern Mediterranean at 
December 31, 2017, included four leases and three licenses operated offshore Israel. Offshore Cyprus, we operate under the 
terms of a PSC. 

At December 31, 2017, the Eastern Mediterranean position included approximately 78,000 net developed acres and 116,000 net 
undeveloped acres located between 10 and 90 miles offshore Israel in water depths ranging from 700 feet to 6,500 feet. The 
license offshore Cyprus covers approximately 33,000 net undeveloped acres adjacent to our Israel acreage. 

10

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents
Index to Financial Statements

Locations of our operations in the Eastern Mediterranean as of December 31, 2017 are shown below:

Offshore Israel   Noble Energy and our partners have delivered reliable and affordable natural gas to Israeli citizens for over a 
decade. During this time, we have delivered approximately 2.3 Tcf, gross, of natural gas to Israeli customers, including the 
Israel Electric Corporation (IEC), the largest supplier of electricity in the country. 

We are the first company to construct, operate and produce from a major natural gas development project offshore Israel. Our 
Mari-B discovery provided the country with its first supply of domestic natural gas in 2004. In 2009, we discovered the Tamar 
field, another substantial natural gas resource. To maintain and increase natural gas supply to Israel, we developed the Tamar 
field with a discovery to production cycle time of approximately four years, which is exceptionally fast by global industry 
standards for an offshore natural gas project of this magnitude and complexity. 

In 2010, we discovered the Leviathan field, our largest natural gas discovery to date. The quantity of discovered natural gas 
resources at Tamar and Leviathan positions Israel to meet domestic needs for decades and to become a significant natural gas 
exporter. Multiple natural gas customers exist in the region, and Israel’s domestic demand is predicted to continue to grow over 
the next decade, primarily driven by increased use of natural gas over coal to fuel electric power generation. During 2017, 
growth in power, industrial and residential demand in Israel and first exports to Jordan, coupled with almost 100% asset 
uptime, enabled us to set a new sales volume record of 956 MMcfe/d, gross, from fields offshore Israel.

In addition to our natural gas discoveries, the Levant Basin is prospective for crude oil discoveries at greater depths. We 
conducted preliminary exploration activities in 2012 and are analyzing the potential for future exploration.

Domestic Natural Gas Demand   As the Israeli economy continues to grow, the demand for natural gas used primarily for 
electricity generation is also expected to grow. Demand for natural gas in the industrial sector, including refineries, chemical, 
desalination, cement and other plants, as well as residential uses, is also increasing. These sectors are gaining confidence that a 
long-term supply of affordable natural gas will be available and are now investing the capital necessary to convert facilities and 
infrastructure to use natural gas. In addition, government requirements for emissions reductions have also driven incremental 
demand for natural gas beginning in 2016. We have executed numerous GSPAs with domestic customers. See International 
Marketing Activities and Delivery and Firm Transportation Commitments, below. 

Regional Demand and Exports   The Eastern Mediterranean presents an opportunity to match our affordable, abundant supply 
of natural gas with a substantially undersupplied regional market, including customers in Jordan and Egypt. With the Tamar 
field online providing reliable production, and the development of the Leviathan field progressing, we are well positioned to 
supply natural gas to the region for many years. 

11

Table of Contents
Index to Financial Statements

Israel Natural Gas Projects  

Tamar Natural Gas Project (32.5% operated working interest)   The Tamar project began production in March 2013 and has 
peak flow rates of approximately 1.1 Bcf/d, gross, to support seasonal high demand periods. In 2015, we completed the Tamar 
compression project, which expanded field production capacity by adding compression at the Ashdod onshore terminal (AOT) 
and in 2017, we completed and commenced production from the Tamar 8 development well. The Tamar 8 well increases supply 
reliability as domestic demand for natural gas continues to grow.

In 2017, we installed subsea equipment to allow for future tie-back of our 2013 Tamar Southwest discovery into the Tamar 
platform and other existing infrastructure. We continue to work with the Government of Israel to obtain regulatory approval of 
the development plan, which would help reinforce the reliability for the Tamar project and support increased customer demand.

We are also assessing the possibility for expansion of the Tamar project. The project would expand field deliverability from the 
current capacity level of approximately 1.2 Bcf/d to up to approximately 2.1 Bcf/d, a quantity that would allow for additional 
regional export. Expansion would include a third flow line component and additional producing wells. Timing of project 
sanction is dependent upon progress relating to domestic and regional marketing efforts of these resources as well as regulatory 
approvals from respective governments.

The Israel Natural Gas Framework (Framework) provides for reduction in our ownership interest in the Tamar and Dalit fields 
from 36% to 25% by year-end 2021. In 2016, we divested 3.5% of our interest in these respective fields, partially fulfilling this 
commitment required by the Framework. Further, on January 29, 2018, we signed a definitive agreement to divest a 7.5% 
working interest in these respective fields to Tamar Petroleum Ltd (TASE: TMRP). See Item 8. Financial Statements and 
Supplementary Data – Note. 4. Acquisitions, Divestitures and Merger.

Leviathan Natural Gas Project (39.66% operated working interest)   In early 2017, we announced project sanction of the 
Leviathan natural gas project and recorded initial proved reserves of 3.3 Tcf (551 MMBoe) associated with the first phase of 
development. The first phase of development of the Leviathan field provides 1.2 Bcf/d of production capacity and consists of 
four wells, a subsea production system and a shallow-water processing platform, with a connection to an onshore valve station 
and the Israel Natural Gas Lines (INGL) pipeline network. We expect our share of development costs to total approximately 
$1.5 billion and to be funded from our share of cash flows from the Tamar asset and expected proceeds to be received from the 
sell-down of our ownership interest in Tamar as noted above. In addition, we have the ability to borrow under the Leviathan 
Term Loan Facility (defined below). As we progress the first phase of development, we have included volume capacity 
expansion optionality on the Leviathan platform to allow for cost effective expansion to meet growing regional natural gas 
demand.

During 2017, we commenced drilling and continued detailed design and engineering activities and fabrication of onshore 
facilities, topsides, jacket and subsea equipment. We will continue drilling activities and commence well completions in 2018 
as we progress the project towards first gas sales by the end of 2019. As of December 31, 2017, the project remained within 
budget and on schedule at approximately 35% complete, with all critical path equipment and major contracts secured. 

The marketing and development of natural gas from this asset is intended to serve both domestic demand and regional export. 
We are actively engaged in natural gas marketing activities and have progressed multiple GSPAs totaling up to approximately 
525 MMcf/d, gross (approximately 208 MMcf/d, net) of natural gas from the Leviathan field.  

Our largest Leviathan GSPA, with the National Electric Power Company Ltd. (NEPCO) of Jordan, provides for sales of natural 
gas intended for consumption in power production facilities over a 15-year period. Sales to NEPCO are anticipated to 
commence at field startup. We continue to market natural gas from the Leviathan field toward realizing full utilization of the 
1.2 Bcf/d of production capacity. See Israel Natural Gas Framework and Regulatory Environment, below.

Alon D License   In August 2017, the Petroleum Commissioner of Israel granted us a 32-month extension of the Alon D license 
(47.059% operated working interest) to drill an exploration well. We are performing geologic and environmental studies 
necessary to progress the prospect to an investment decision.

Other Discoveries Offshore Israel   Our development plan for the Dalit field (32.5% operated working interest), a 2009 natural 
gas discovery, was approved by the Government of Israel. Development includes a tieback to the Tamar platform. We are also 
analyzing 3D seismic data to evaluate the additional potential of the area, including the possible existence of hydrocarbons at 
deeper intervals.  

Asset Impairments   No impairment expense was recorded during 2017. During 2016, we recorded impairment expense of $88 
million related to certain Leviathan field development concepts which were not selected. During 2015, we recorded impairment 
expense of $36 million, primarily due to an increase in field abandonment costs. See Item 8. Financial Statements and 
Supplementary Data – Note 5.  Asset Impairments.

Israel Natural Gas Framework and Regulatory Environment   We are subject to certain fiscal, antitrust and other regulatory 
challenges in Israel. These challenges have been addressed with the enactment of the Framework by the Government of Israel. 

12

Table of Contents
Index to Financial Statements

See Regulations – Israel Regulatory Environment and Item 1A. Risk Factors – Our Eastern Mediterranean discoveries bear 
certain geopolitical, regulatory, financial and technical challenges that could adversely impact our ability to monetize these 
natural gas assets.

Cyprus Natural Gas Project (Offshore Cyprus)  During fourth quarter 2015, we entered into a farm-out agreement with a 
partner for a 35% interest in Block 12, which includes the Aphrodite natural gas discovery, for $171 million. We received initial 
proceeds of $131 million related to the farm-out agreement in 2016 and received the remaining consideration, subject to post-
close adjustments, in January 2017. We continue to operate with a 35% interest. As part of the farm-out process, we negotiated 
a waiver of our remaining exploration well obligation.

In September 2017, we submitted an updated development plan to the Government of Cyprus. We continue to work with the 
Government of Cyprus to obtain approval of the development plan and the issuance of an Exploitation License for the 
Aphrodite field. Receiving an Exploitation License, in conjunction with securing markets for Aphrodite natural gas, will allow 
us and our partners to perform the necessary FEED studies and progress the project to final investment decision. In preparation 
for FEED, we and our partners are currently performing preliminary engineering and design (pre-FEED) for the potential 
development of the Aphrodite field that, as currently planned, would deliver natural gas to regional customers. During 2017, we 
progressed capital project cost improvements and continued regional natural gas marketing efforts.

West Africa (Equatorial Guinea, Cameroon and Gabon)   West Africa is one of our operating areas and includes the Alba 
field, Block O and Block I offshore Equatorial Guinea, the YoYo PSC, offshore Cameroon, and one block offshore Gabon. In 
West Africa, our interests can be burdened by overriding royalty interests and/or other government interests. As such, our 
working interests may differ from our revenue interests. Equatorial Guinea is currently our only producing country in our West 
Africa segment and, excluding the impact of equity investees, Equatorial Guinea contributed an average of 57 MBoe/d of sales 
volumes in 2017 and represented approximately 15% of total consolidated sales volumes. At December 31, 2017, Equatorial 
Guinea represented approximately 5% of total proved reserves. We held approximately 118,000 net developed acres and 30,000 
net undeveloped acres in Equatorial Guinea, 168,000 net undeveloped acres in Cameroon, and 403,000 net undeveloped acres 
in Gabon at December 31, 2017. 

Locations of our upstream operations in Equatorial Guinea and Cameroon, as of December 31, 2017 are shown on the map 
below:

Aseng Field   Aseng is an oil field on Block I (40% operated working interest, 38% revenue interest), offshore Equatorial 
Guinea, which began producing in 2011. The development includes five horizontal producing wells flowing to the Aseng  
floating production, storage and offloading vessel (FPSO) where the crude oil is stored until sold, and natural gas and water are 
reinjected into the reservoir to maintain pressure and maximize crude oil recoveries. During 2017, the Aseng field produced 
approximately 7 MBoe/d, net.

13

Table of Contents
Index to Financial Statements

The Aseng FPSO is designed to act as a crude oil production hub, as well as a liquids storage and offloading facility, with 
capabilities to support future subsea oil field developments in the area. It also has the ability to process and store condensate 
from natural gas condensate fields in the area, the first of which is Alen. Since it first came online, the Aseng field has 
maintained reliable performance, averaging over 99% production uptime and, as of December 31, 2017, has produced 89 
MMBbls of cumulative gross crude oil production. 

Alen Field   Alen is a natural gas and condensate field primarily on Block O (51% operated working interest, 45% revenue 
interest), offshore Equatorial Guinea, which includes three production wells and three natural gas injection wells connected to a 
production platform that utilizes the Aseng FPSO for storage and offloading. Alen has been producing since 2013 and produced 
approximately 4 MBoe/d, net, during 2017. As of December 31, 2017, Alen has produced over 33 MMBbls of cumulative gross 
condensate production. 

The Alen platform is expected to be utilized in our natural gas monetization efforts. See West Africa Natural Gas Monetization, 
below.

In October 2017, we executed a unitization agreement on the Alen field with our partners and the Government of Equatorial 
Guinea. The agreement was between Block O and Block I interest owners. We expect the impact on our allocated future sales 
volumes to be de minimis.

Alba Field   Alba is a natural gas and condensate field located offshore Equatorial Guinea (33% non-operated working interest, 
32% revenue interest), which has been producing since 1991. Operations include the Alba field and related production and 
condensate storage facilities, a liquefied petroleum gas (LPG) processing plant where additional condensate is extracted along 
with LPGs, and a methanol plant capable of producing up to 3,100 gross metric tons per day of methanol. The LPG processing 
plant and the methanol plant are located on Bioko Island, Equatorial Guinea. During 2017, Alba field sales volumes totaled 54 
MBoe/d, net, reflecting 46 MBoe/d attributable to total sales volumes and 8 MBoe/d attributable to an equity investee.

In April 2017, we executed a unitization agreement on the Alba field with our partner and the Government of Equatorial 
Guinea. The agreement was between Alba Block and Block D interest owners. As a result of the unitization, our revenue 
interest going forward changed from 34% to 32%, and our non-operated working interest changed from 35% to 33%. As 
anticipated, our 2017 sales volumes from the Alba field were lower as a result of the unitization, and the impact on our proved 
reserves was de minimis. We expect the impact on our allocated future sales volumes to be de minimis.

We sell our share of primary condensate produced in the Alba field under short-term contracts at market-based prices. We sell 
our share of natural gas production from the Alba field to the LPG plant, the methanol plant and an unaffiliated liquefied 
natural gas (LNG) plant. The LPG plant is owned by Alba Plant LLC (Alba Plant), in which we have a 28% interest. The 
methanol plant is owned by Atlantic Methanol Production Company, LLC (AMPCO), in which we have a 45% interest. 
AMPCO purchases natural gas from the Alba field under a contract that runs through 2026 and subsequently markets the 
produced methanol primarily to customers in the US and Europe. Alba Plant sells its LPG products and secondary condensate 
at our marine terminal at prevailing market prices. 

We account for both Alba Plant and AMPCO as equity method investments and present our share of income as a component of 
revenues. We consider these equity method investments essential components of our business as well as necessary and integral 
elements of our value chain in support of ongoing operations in our West Africa operating area. Our Alba asset teams are fully 
engaged in operational and financial decisions and exert significant influence in the monetization of the Alba field and Alba 
Plant. We hold a voting position on AMPCO's leadership team through AMPCO's management committee, and our asset teams 
influence decisions regarding capital investments, budgets, turnarounds, maintenance and other project matters.

West Africa Natural Gas Monetization  We continue our efforts to monetize the significant natural gas resources represented by 
our discoveries offshore West Africa, including our 2007 Yolanda discovery (Block I), the YoYo discovery, offshore Cameroon, 
as well as natural gas from our Aseng and Alen fields. 

As part of our monetization efforts, a natural gas development team has been working with local governments to evaluate 
natural gas monetization concepts. After analyzing existing infrastructure, including the Alen platform and other facilities, we 
believe these assets can be efficiently modified and retrofitted to allow for future commercialization of natural gas. Leveraging 
existing assets for the development of natural gas minimizes future capital expenditures while providing advantageous financial 
returns.   

Cameroon  We have an interest in approximately 168,000 undeveloped acres offshore Cameroon in our YoYo PSC (100% 
operated working interest). The YoYo-1 exploratory well was drilled in 2007, discovering natural gas and condensate. We are 
working with the government of Cameroon to evaluate natural gas development options, which will provide a more robust 
framework directly related to oil and gas operational activities. In June 2017, we converted our mining concession license for 
the YoYo block into a PSC.

Offshore Gabon  We are the operator of Block Doukou Dak (60% working interest), an undeveloped, deepwater area, covering 
approximately 671,000 gross acres. Our exploration commitment includes an obligation for 3D seismic, which was acquired 

14

Table of Contents
Index to Financial Statements

and processed throughout 2016 and the first half of 2017. We received the final product mid-year 2017 and are currently 
evaluating the seismic data results. 

See also Item 8. Financial Statements and Supplementary Data – Note 6.  Capitalized Exploratory Well Costs and Undeveloped 
Leasehold Costs.

Other International

Other international operations include the following:

Offshore Newfoundland (Canada)   In November 2016, we acquired a non-operated 25% working interest in exploration 
parcels (blocks) 3, 4 and 8, and a non-operated 40% working interest in exploration parcel (block) 10. BP Canada Energy 
Group ULC is the operator of the blocks. We have acquired 3D seismic data which will allow us to assess the economic 
viability of this exploration prospect.

Offshore Suriname   We hold a non-operated 20% working interest in Block 54 offshore Suriname in the Atlantic Ocean. In 
October 2017, our partner spud the Araku-1exploration well and subsequently plugged and abandoned the well. As a result, we 
recorded dry hole expense of $7 million and are currently analyzing the well results to update modeling of the basin and review 
further prospectivity. See Note 5.  Asset Impairments.

Offshore Falkland Islands   In 2016, following completion of our geological assessment, we exited all licenses, excluding the 
PL-001 which contains the Rhea prospect. The exit resulted in a $25 million undeveloped leasehold impairment expense. As of 
December 31, 2017, there is no remaining net book value associated with the assets.

North Sea   The non-operated MacCulloch field is currently undergoing decommissioning activities. Due to its size and 
location, field abandonment is a multi-year process, requiring several phases. Therefore, our share of estimated field 
abandonment costs, recorded as an asset retirement obligation, may change over time. For example, during 2017, the operator 
of the MacCulloch field notified working interest owners that the scope and magnitude of decommissioning activities has been 
revised downward, resulting in lower projected field abandonment costs. As such, we recorded a revision of $42 million in 
2017 that decreased our estimated asset retirement obligation for the remediation project. The discounted obligation totaled 44 
million at December 31, 2017. We will continue to monitor the status and costs of the project and will adjust our estimate 
accordingly. 

Midstream – Properties and Activities

We continue to develop our Midstream business, which includes gathering, treating, and transportation assets as well as water-
related infrastructure, including fresh water delivery and produced water disposal assets, that support our upstream operations. 
Our Midstream assets are strategically located with our exploration and production activities in the DJ and Delaware Basins. 
These assets also provide services to third party customers. 

Our Midstream operations include those of Noble Midstream Partners, a publicly traded consolidated subsidiary and limited 
partnership that owns, operates, develops, and acquires a wide range of domestic midstream infrastructure assets. Noble 
Midstream Partners is a fee-based, growth-oriented Delaware master limited partnership formed in December 2014 organized 
in a development company structure. At December 31, 2017, our ownership interest in Noble Midstream Partners consisted of a 
45.5% limited partner interest, the entire non-economic general partner interest, and all of the incentive distribution rights. 
On September 20, 2016, Noble Midstream Partners completed its initial public offering of common units, which provided 
access to capital markets to support funding of our US onshore midstream investment program. 

The following diagram depicts our organizational structure as of December 31, 2017.  Development companies identified in red 
and blue indicate the location of the assets as either in the DJ Basin or Delaware Basin, respectively.

15

Table of Contents
Index to Financial Statements

Advantage Joint Venture   In April 2017, Noble Midstream Partners, along with its partner, Plains Pipeline, L.P., formed the 
Advantage joint venture (Advantage Joint Venture) and subsequently completed the acquisition of Advantage Pipeline L.L.C. 
(Advantage Pipeline). Noble Midstream Partners serves as the operator of the Advantage Pipeline System, which includes a 70-
mile crude oil pipeline (Advantage Delaware Basin Pipeline) in the Delaware Basin from Reeves County, Texas to Crane 
County, Texas with 150 MBbls per day of capacity (expandable to over 200 MBbls per day) and 490 MBbls of storage capacity. 
Noble Midstream Partners owns a 50% interest in the joint venture.

Asset Contribution   On June 26, 2017, Noble Midstream Partners acquired an additional 15% limited partner interest in Blanco 
River DevCo LP (Blanco River DevCo), increasing its ownership to 40% of Blanco River DevCo, and acquired the remaining 
20% limited partner interest in Colorado River DevCo LP (Colorado River DevCo) from Noble Energy. Blanco River DevCo 
holds Noble Midstream Partners’ Delaware Basin in-field gathering dedications for crude oil and produced water gathering 
services on approximately 111,000 net acres, with substantially all of the acreage also dedicated for natural gas gathering. 
Colorado River DevCo consists of gathering systems across Noble Energy’s Wells Ranch and East Pony development areas in 
the DJ Basin.

Black Diamond Gathering and Acquisition of Saddle Butte Pipeline   In December 2017, Noble Midstream Partners and 
Greenfield Midstream, LLC (Greenfield Midstream) formed an entity, Black Diamond Gathering LLC (Black Diamond 
Gathering), to acquire Saddle Butte Rockies Midstream, LLC and affiliates (Saddle Butte). The acquisition includes a large-
scale integrated crude oil gathering system in the DJ Basin, consisting of approximately 160 miles of pipeline in operation and 
300 MBbls per day of delivery capacity. Saddle Butte has approximately 141,000, net dedicated acres from six customers under 
fixed fee arrangements.

The transaction closed on January 31, 2018, with Noble Midstream Partners funding $319.9 million of the total cash 
consideration of $638.5 million. Noble Midstream Partners received a 54.4% equity ownership and Greenfield Midstream will 
own the remaining 45.6% of Black Diamond Gathering. Noble Midstream Partners will operate the Saddle Butte system.

Marcellus Shale CONE Gathering Divestiture   In late 2017, we announced the signing of a definitive agreement to divest 
our 50% interest in CONE Gathering, LLC (CONE Gathering). CONE Gathering owns the general partner of CONE 
Midstream Partners LP (CONE Midstream). As of December 31, 2017, the net book value of the assets held by Noble Energy 

16

Table of Contents
Index to Financial Statements

was approximately $181 million. In January 2018, we closed the sale of CONE Gathering, receiving cash proceeds of $308 
million. We now hold 21.7 million common units representing limited partner interests in CNX Midstream Partners LP (NYSE: 
CNXM). As of December 31, 2017, the net book value of the limited partner interests was approximately $70 million.

See Item 8. Financial Statements and Supplementary Data – Note 4.  Acquisitions, Divestitures and Merger and Item 8. 
Financial Statements and Supplementary Data – Note 7.  Equity Method Investments.

Major Construction Projects   Our activity in 2017 primarily focused on construction and development of midstream 
infrastructure assets, including:

• 
• 
• 

• 
• 

completion of a produced water expansion project servicing the Wells Ranch IDP area;
completion of crude oil and produced water gathering systems servicing the Greeley Crescent IDP area;
completion of the connection from the CGF in the Delaware Basin to the Advantage Pipeline, which began allowing 
crude oil to flow from the completed facility to the Advantage Pipeline in third quarter 2017;
completion of the construction of two CGFs in the Delaware Basin; and 
continued construction activities on expansion of our freshwater system servicing the Mustang IDP area and the 
commencement of construction of the backbone gathering infrastructure build-out, which is expected to be completed 
in early 2018.

In 2018, we expect to continue our midstream investment to focus on the DJ and Delaware Basins to meet the needs of our 
upstream operations.

Third Party Sales   During 2017, we began providing crude oil and produced water gathering and fresh water delivery services 
to an unaffiliated third party in the Greeley Crescent IDP area of the DJ Basin.

Proved Reserves Disclosures

Internal Controls Over Reserves Estimates   Our policies and processes regarding internal controls over the recording of reserves 
estimates require reserves to be in compliance with the Securities and Exchange Commission (SEC) definitions and guidance and 
prepared in accordance with Standards Pertaining to the Estimating and Auditing of Oil and Gas Reserves Information promulgated 
by the Society of Petroleum Engineers. Our internal controls over reserves estimates also include the following:

• 
• 

the Audit Committee of our Board of Directors reviews significant reserves changes on an annual basis;
fields that meet a minimum reserve quantity threshold, newly sanctioned development projects, and certain fields 
selected on a rotational basis, which combined represent over 80% of our proved reserves, are audited by Netherland, 
Sewell & Associates, Inc. (NSAI), a third-party petroleum consulting firm, on an annual basis; and

•  NSAI is engaged by, and has direct access to, the Audit Committee. See Third-Party Reserves Audit, below.

Responsibility for compliance in reserves estimation is delegated to our Corporate Reservoir Engineering group. Qualified 
petroleum engineers in our Houston and Denver offices prepare all reserves estimates for our different geographical regions. 
These reserves estimates are reviewed and approved by regional management and senior engineering staff with final approval 
by the Senior Vice President – Corporate Development and certain other members of senior management.

Our Senior Vice President – Corporate Development oversees our corporate business development, strategic planning, and 
reserves departments. He is the technical person primarily responsible for overseeing the preparation of our reserves estimates 
and the third-party audit of our reserves estimates. He has Bachelor of Science and Master of Science degrees in Petroleum 
Engineering and over 37 years of industry experience with positions of increasing responsibility in engineering, evaluations, 
and business unit management at the Company. The Senior Vice President – Corporate Development reports directly to our 
Chief Executive Officer.

Technologies Used in Reserves Estimation  The SEC’s reserves rules allow the use of techniques that have been proved 
effective by actual production from projects in the same reservoir or an analogous reservoir or by other evidence using reliable 
technology that establishes reasonable certainty. Reliable technology is a grouping of one or more technologies (including 
computational methods) that has been field tested and has been demonstrated to provide reasonably certain results with 
consistency and repeatability in the formation being evaluated or in an analogous formation.

We used a combination of production and pressure performance, wireline wellbore measurements, simulation studies, offset 
analogies, seismic data and interpretation, wireline formation tests, geophysical logs and core data to calculate our reserves 
estimates, including the material additions to the 2017 reserves estimates.

Based on reasonable certainty of reservoir continuity in US onshore formations where we operate, we may record proved 
reserves associated with wells more than one offset location away from an existing proved producing well. All of our wells 
drilled that were more than one offset away from a proved producing well at the time of drilling were determined to be 
economically producible.

17

Table of Contents
Index to Financial Statements

Third-Party Reserves Audit   In each of the years 2017, 2016, and 2015, we retained NSAI to perform audits of proved 
reserves. The reserves audit for 2017 included a detailed review of six of our major US onshore and international fields, which 
covered approximately 92% of US proved reserves and 99% of international proved reserves (95% of total proved reserves). 
The reserves audit for 2016 included a detailed review of nine of our major US onshore and international fields, which covered 
approximately 88% of US proved reserves and 99.9% of international proved reserves (92% of total proved reserves). The 
reserves audit for 2015 included a detailed review of nine of our major fields and covered approximately 91% of total proved 
reserves.

In connection with the 2017 reserves audit, NSAI prepared its own estimates of our proved reserves. In order to prepare its 
estimates of proved reserves, NSAI examined our estimates with respect to reserves quantities, future production rates, future 
net revenue, and the present value of such future net revenue. NSAI also examined our estimates with respect to reserves 
categorization, using the definitions for proved reserves set forth in Rule 4-10(a) of Regulation S-X and subsequent SEC staff 
interpretations and guidance.

In the conduct of the reserves audit, NSAI did not independently verify the accuracy and completeness of information and data 
furnished by us with respect to ownership interests, crude oil and natural gas production, well test data, historical costs of 
operation and development, product prices, or any agreements relating to current and future operations of the fields and sales of 
production. However, if in the course of the examination something came to the attention of NSAI which brought into question 
the validity or sufficiency of any such information or data, NSAI did not rely on such information or data until it had 
satisfactorily resolved its questions relating thereto or had independently verified such information or data.

NSAI determined that our estimates of reserves have been prepared in accordance with the definitions and regulations of the 
SEC, including the criteria of “reasonable certainty,” as it pertains to expectations about the recoverability of reserves in future 
years, under existing economic and operating conditions, consistent with the definition in Rule 4-10(a)(24) of Regulation S-X. 
NSAI issued an unqualified audit opinion on our proved reserves at December 31, 2017, based upon their evaluation. NSAI 
concluded that our estimates of proved reserves were, in the aggregate, reasonable and have been prepared in accordance with 
Standards Pertaining to the Estimating and Auditing of Oil and Gas Reserves Information promulgated by the Society of 
Petroleum Engineers. NSAI’s report is attached as Exhibit 99.1 to this Annual Report on Form 10-K.

When compared on a field-by-field basis, some of our estimates are greater and some are less than the estimates of NSAI. 
Given the inherent uncertainties and judgments that go into estimating proved reserves, differences between internal and 
external estimates are to be expected. For proved reserves at December 31, 2017, on a quantity basis, the NSAI field estimates 
ranged from 18 MMBoe or 8% below to 9 MMBoe or 2% above as compared with our estimates on a field-by-field basis. 
Differences between our estimates and those of NSAI are reviewed for accuracy but are not further analyzed unless the 
aggregate variance is greater than 10%. Reserves differences at December 31, 2017 were, in the aggregate, approximately 17 
MMBoe, or less than 1%.

Proved Reserves

We have historically added reserves through our exploration program, development activities, and acquisition of producing 
properties. Changes in proved reserves were as follows:

Year Ended December 31,
2016

2017

2015

(MMBoe)
Proved Reserves Beginning of Year
Revisions of Previous Estimates
Extensions, Discoveries and Other Additions
Purchase of Minerals in Place
Sale of Minerals in Place
Production
Proved Reserves End of Year

1,437
135
736
57
(261)
(139)
1,965

1,421
64
179
4
(77)
(154)
1,437

1,404
(216)
100
269
(6)
(130)
1,421

Revisions   Revisions of previous estimates represent changes in previous reserves estimates, either upward (positive) or 
downward (negative), resulting from new information normally obtained from development drilling and production history or 
resulting from a change in economic factors, such as commodity prices, operating costs, development costs or abandonment 
costs. Revisions primarily included the following:

• 

positive price revisions of 30 MMBoe globally, as well as positive performance revisions of 49 MMBoe for the Tamar 
field, offshore Israel, 30 MMBoe for the Delaware Basin and 22 MMBoe for the Eagle Ford Shale, partially offset by 
abandonment cost increases for US onshore in 2017;

18

 
 
Table of Contents
Index to Financial Statements

• 

• 

positive revisions of 43 MMBoe for the DJ Basin, 42 MMBoe for the Marcellus Shale, 11 MMBoe for the Delaware 
Basin, and 10 MMBoe for the Alba field, offshore Equatorial Guinea, due to increased performance and/or lower 
development or operating costs; partially offset by negative revisions of 53 MMBoe due to lower commodity prices in 
2016; and

negative price revisions of 307 MMBoe, partially offset by positive performance revisions of 81 MMBoe for the 
Marcellus Shale and 17 MMBoe for the Delaware Basin in 2015.

Extensions, Discoveries and Other Additions   These are additions to proved reserves that result from (1) extension of the 
proved acreage of previously discovered reservoirs through additional drilling in periods subsequent to discovery and (2) 
discovery of new fields with proved reserves or of new reservoirs of proved reserves in old fields. Extensions, discoveries and 
other additions primarily included the following:

• 

• 

• 

increases primarily relate to 99 MMBoe in the DJ Basin and 77 MMBoe in the Delaware Basin as a result of enhanced 
completion techniques in our horizontal drilling programs and an increase of 551 MMBoe due to the sanction of the first 
phase of development at the Leviathan natural gas field in 2017;

increases of 83 MMBoe in the DJ Basin, 42 MMBoe in the Marcellus Shale, 33 MMBoe in the Delaware Basin and 21 
MMBoe in the Eagle Ford Shale, all associated with our horizontal drilling programs in 2016; and

increases of 86 MMBoe in the DJ Basin and 14 MMBoe in the Marcellus Shale associated with our horizontal drilling 
programs in 2015.

Approximately 70% of our 2018 capital program is allocated to US onshore, primarily the DJ Basin, Delaware Basin and Eagle 
Ford Shale, and more than 25% is allocated to offshore Israel. In turn, we expect that future reserves additions will primarily 
come from our development projects in the US onshore and offshore Israel. Potential new discoveries resulting from our 
exploration programs in our operational areas as well as global new ventures programs could also lead to future reserve 
additions. In addition, we may also purchase proved properties in strategic acquisitions. See Item 7. Management's Discussion 
and Analysis of Financial Condition and Results of Operations – Liquidity and Capital Resources – Acquisition, Capital 
Expenditures and Other Exploration Expenditures.

Purchase of Minerals in Place   We occasionally enhance our asset portfolio with strategic acquisitions of producing 
properties. Purchases primarily included the following:

• 

• 

an increase of 57 MMBoe in the Delaware Basin primarily as a result of the Clayton Williams Energy Acquisition in 
2017; and 
the acquisition of additional acreage, primarily in the Eagle Ford Shale and Delaware Basin in Texas in 2015 in 
connection with the Rosetta Merger. 

Sale of Minerals in Place   We maintain an ongoing portfolio management program through which we may periodically divest 
assets. Sales primarily included the following:

• 

• 

• 

a reduction of 241 MMBoe related to the Marcellus Shale upstream divestiture, as well as 20 MMBoe associated with 
divestment of non-strategic US onshore assets in 2017;
a reduction of 36 MMBoe in Israel driven by our 3.5% sale of Tamar working interest, as well as a 29 MMBoe 
divestment in the Marcellus Shale in 2016; and
the sale of non-strategic US onshore assets in 2015.

See Items 1. and 2. Business and Properties and Item 8. Financial Statements and Supplementary Data – Note 4.  Acquisitions, 
Divestitures and Merger.

Production   See Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations – Results of 
Operations - E&P - Revenues  and Critical Accounting Policies and Estimates – Reserves and Item 8. Financial Statements and 
Supplementary Data – Supplemental Oil and Gas Information (Unaudited).

19

Table of Contents
Index to Financial Statements

Proved Undeveloped Reserves (PUDs)   As of December 31, 2017, our PUDs totaled 249 MMBbls of crude oil and 
condensate, 4.5 Tcf of natural gas, and 99 MMBbls of NGLs for a total of 1,097 MMBoe, or 56% of proved reserves. Changes 
in PUDs that occurred during the year are summarized below:

(MMBoe)
Proved Undeveloped Reserves Beginning of Year
Revisions of Previous Estimates
Extensions, Discoveries and Other Additions
Purchase of Minerals in Place
Sale of Minerals in Place
Conversion to Proved Developed
Proved Undeveloped Reserves End of Year

United
 States

Israel

Total

422
26
174
36
(54)
(122)
482

64
—
551
—
—
—
615

486
26
725
36
(54)
(122)
1,097

Revisions of previous estimates include the transfer of PUDs to unproved reserve categories as a result of changes in 
development plans and/or the impact of changes in commodity prices, and the addition of new PUDs arising from current 
development plans. Positive revisions of 26 MMBoe in the US for 2017 included 7 MMBoe related to positive price revisions 
and 19 MMBoe related to enhancements of our horizontal drilling programs. 

Extensions, discoveries and other additions include the addition of proved reserves through additional drilling or the discovery 
of new reservoirs in proven fields. During 2017, we recorded the following additions as a result of successful expansion of our 
long lateral well programs in US onshore and recording of reserves for Leviathan:

• 
• 
• 
• 

94 MMBoe in the DJ Basin;
74 MMBoe in the Delaware Basin;
6 MMBoe in the Eagle Ford Shale; and
551 MMBoe in the Leviathan field.

Conversion to proved developed reserves included the following transfers:

• 
• 
• 
• 

34 MMBoe in the DJ Basin;
17 MMBoe in the Delaware Basin; 
60 MMBoe in the Eagle Ford Shale; and
11 MMBoe in the Marcellus Shale, prior to divestiture.

US PUDs Locations   In 2017, we converted 122 MMBoe of our US PUDs, or 29% of our US PUDs beginning balance, to 
developed status. Based on our current inventory of identified horizontal well locations and our anticipated rate of drilling and 
completion activity, we expect our US PUDs recorded as of December 31, 2017 to be converted to proved developed reserves 
within five years of initial disclosure.

As of December 31, 2017, our US PUDs included:

• 
• 
• 

263 MMBoe in the DJ Basin;
181 MMBoe in the Delaware Basin; and
38 MMBoe in the Eagle Ford Shale.

Our PUDs are expected to be recovered from new wells on undrilled acreage or from existing wells where additional capital 
expenditures are required for completion, such as drilled but uncompleted (DUC) wells. As of December 31, 2017, we had 
approximately 32 MMBoe of PUDs associated with DUC well locations related to our US onshore operations, approximately 
75% of which are in the DJ Basin and the remainder are in the Delaware Basin and Eagle Ford Shale.

International PUDs Locations  As of December 31, 2017, our international PUDs included 615 MMBoe in Israel, of which 551  
MMBoe relate to the Leviathan field, which is currently in the first phase of development. The Tamar field contains 35 
MMBoe, and the Tamar Southwest field, which is awaiting government approval of the development plan, contains 29 
MMBoe. Our Tamar Southwest PUDs of 29 MMBoe, or less than 5% of our international PUDs, are expected to remain 
undeveloped for five years or longer since initial disclosure in 2013. We have been working with the government of Israel for 
the approval of the development plan and have continued capital investment within this field, including laying subsea 
equipment in 2017 for future tie-in of field production into existing Tamar infrastructure. Other than the Tamar Southwest 
PUDs, we expect all of our international PUDs, including those associated with the initial phase of development at the 
Leviathan field, to be converted to proved developed reserves within five years of initial disclosure. 

20

 
Table of Contents
Index to Financial Statements

Development Costs   Costs incurred to convert PUDs to proved developed reserves were approximately $1.2 billion in 2017, 
$656 million in 2016, and $1.5 billion in 2015. Costs incurred in 2017 primarily related to the DJ Basin, Delaware Basin and 
Eagle Ford Shale development projects, as well as certain costs incurred for the development of the Tamar 8 well. In addition, 
we incurred approximately $416 million in 2017 to advance the development of the Leviathan PUDs which are expected to be 
converted to proved developed reserves in 2019.

Estimated future development costs relating to the development of all PUDs are projected to be approximately $1.7 billion in 
2018, $1.9 billion in 2019, and $1.4 billion in 2020. Estimated future development costs include capital spending on 
development projects and PUDs related to development projects will be reclassified to proved developed reserves when 
production commences.

Drilling Plans  Our long range development plans will result in the conversion of all PUDs to developed reserves within five 
years of their initial disclosure, with the exception of the previously mentioned Tamar Southwest PUDs. PUDs associated with 
the Tamar Southwest field are expected to be converted to proved developed reserves prior to the end of 2020 as contemplated 
in our long range development plans, subject to local government approval. Initial production from all PUDs is expected to 
begin during the years 2018 to 2022.

In accordance with US GAAP, we disclose a standardized measure of discounted future net cash flows related to our proved 
reserves. In order to standardize the measure, all companies are required to use a 10% discount rate and SEC pricing rules. This 
prescribed calculation can result in some PUDs having negative present worth, meaning while these PUDs have positive cash 
flows, the rate of return is lower than 10%. As of December 31, 2017, we had no PUDs with a negative present worth when 
discounted at 10%.

We consider the economic development of reserves based on our estimates of future pricing, future investments, production and 
other economic factors that are excluded from the SEC reserves requirements and are committed to developing PUDs within 
five years of initial disclosure. See Item 7. Management's Discussion and Analysis of Financial Condition and Results of 
Operations – Operating Outlook – 2018 Capital Investment Program.

For more information see the following:

• 

• 

Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations – Critical Accounting 
Policies and Estimates – Reserves for further discussion of our reserves estimation process; and
Item 8. Financial Statements and Supplementary Data – Supplemental Oil and Gas Information (Unaudited) for 
additional information regarding estimates of crude oil, NGL and natural gas reserves, including estimates of proved, 
proved developed, and proved undeveloped reserves, the standardized measure of discounted future net cash flows, and 
the changes in the standardized measure of discounted future net cash flows.

21

Table of Contents
Index to Financial Statements

Sales Volumes, Price and Cost Data  Sales volumes, price and cost data are as follows:

Sales Volumes

Average Sales Price

Crude Oil &
Condensate
MBbl

NGLs
MBbl

Natural
Gas
MMcf

Crude Oil &
Condensate
Per Bbl

NGLs Per
Bbl

Natural
Gas
Per Mcf

Production 
Cost (1)

Per BOE

Year Ended December 31, 2017 (2)
United States
DJ Basin
Marcellus Shale
Other US
Total US

Israel
  Tamar Field
  Other Israel
  Total Israel
Equatorial Guinea (3)
Total Consolidated Operations
Equity Investee (4)
Total
Year Ended December 31, 2016 (2)
United States
DJ Basin
Marcellus Shale
Other US
Total US

Israel
  Tamar Field
  Other Israel
  Total Israel
Equatorial Guinea (3)
Total Consolidated Operations
Equity Investee (4)
Total
Year Ended December 31, 2015 (2)
United States
DJ Basin
Marcellus Shale
Other US
Total US

Israel
  Tamar Field
  Other Israel
  Total Israel
Equatorial Guinea (3)
United Kingdom
Total Consolidated Operations
Equity Investee (4)
Total

21,564
233
18,757
40,554

130
—
130
6,460
47,144
662
47,806

20,342
431
15,572
36,345

140
—
140
9,415
45,900
629
46,529

20,909
673
7,680
29,262

121
—
121
11,416
88
40,887
554
41,441

6,911
1,654
12,521
21,086

—
—
—
—
21,086
2,162
23,248

7,651
3,094
9,087
19,832

—
—
—
—
19,832
1,993
21,825

6,910
3,480
3,705
14,095

—
—
—
—
—
14,095
1,850
15,945

70,660
63,443
87,364
221,467

96,894
2,346
99,240
87,269
407,976
—
407,976

82,431
177,872
62,017
322,320

102,280
528
102,808
85,987
511,115
—
511,115

85,369
143,465
29,806
258,640

91,884
136
92,020
82,729
49
433,438
—
433,438

$

$

$

$

$

$

50.20
36.91
48.01
49.11

46.95
—
46.95
53.68
49.73
55.13
49.84

40.85
28.25
38.26
39.59

36.67
—
36.67
43.54
40.39
45.44
40.46

44.37
22.39
42.83
43.46

46.91
—
46.91
48.85
55.52
45.00
48.85
45.05

$

$

$

$

$

$

25.22
23.81
22.34
23.40

—
—
—
—
23.40
38.48
24.81

14.66
16.34
14.65
14.92

—
—
—
—
14.92
26.30
15.96

14.21
14.04
13.25
13.91

—
—
—
—
—
13.91
28.40
15.59

$

$

$

$

$

$

$

$

$

$

$

$

2.96
3.15
2.99
3.02

5.37
3.56
5.32
0.27
3.01
—
3.01

2.80
1.68
2.42
2.11

5.22
3.20
5.21
0.27
2.42
—
2.42

2.53
1.75
2.56
2.10

5.34
3.01
5.34
0.27
6.32
2.44
—
2.44

4.46
1.05
6.48
4.81

2.02
N/M
2.01
4.30
4.31
N/M
N/M

3.99
0.90
6.65
3.74

2.58
N/M
2.60
4.40
3.72
N/M
N/M

5.75
1.38
7.15
4.46

3.12
N/M
3.15
5.22
N/M
4.54
N/M
N/M

N/M Amount is not meaningful.
(1)  Average production cost includes crude oil and natural gas operating costs and workover and repair expense and excludes production and 

ad valorem taxes and transportation expense. 

22

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents
Index to Financial Statements

(2)  For each respective year, reserves associated with the Delaware Basin or the Eagle Ford Shale did not comprise 15% or more of total 

reserves on a BOE basis.

(3)  Natural gas from the Alba field is under contract for $0.25 per MMBtu to a methanol plant, an LPG plant, an LNG plant and a power 

generation plant. The methanol and LPG plants are owned by affiliated entities accounted for under the equity method.

(4)  Volumes represent sales of condensate and LPG from the LPG plant in Equatorial Guinea. 

Revenues from sales of crude oil, NGLs and natural gas have accounted for 90% or more of consolidated revenues for each of 
the last three fiscal years.

At December 31, 2017, our operated properties accounted for substantially all of our total production. Being the operator of a 
property improves our ability to directly influence production levels and the timing of projects, while also enhancing our 
control over operating expenses and capital expenditures.

Productive Wells  The number of productive crude oil and natural gas wells in which we held an interest at December 31, 2017 
was as follows:

United States
Israel
Equatorial Guinea
Total

Crude Oil Wells
Net

Gross

Natural Gas Wells
Net

Gross

Total

Gross

Net

3,565
—
5
3,570

2,682
—
2
2,684

4,918
7
23
4,948

4,382
2
8
4,392

8,483
7
28
8,518

7,064
2
10
7,076

Productive wells are producing wells and wells mechanically capable of production. A gross well is a well in which a working 
interest is owned. The number of gross wells is the total number of wells in which a working interest is owned. The number of 
net wells is the sum of the fractional working interests owned in gross wells expressed as whole numbers and fractions thereof. 
Wells with multiple completions are counted as one well in the table above.

Developed and Undeveloped Acreage  Developed and undeveloped acreage (including both leases and concessions) in which 
we held an interest at December 31, 2017 was as follows: 

(thousands of acres)
United States

Onshore
Gulf of Mexico
Total United States
International

Israel
Equatorial Guinea (1)
Suriname
Newfoundland, Canada
Gabon
Cyprus
Cameroon
Other International

Total International
Total

Developed Acreage
Net
Gross

Undeveloped Acreage
Gross

Net

754
93
847

185
284
—
—
—
—
—
2
471
1,318

504
52
556

78
118
—
—
—
—
—
—
196
752

564
247
811

284
81
2,095
2,331
671
95
168
284
6,009
6,820

358
171
529

116
30
419
681
403
33
168
211
2,061
2,590

(1)  Undeveloped acreage includes an exploration lease totaling approximately 55,000 gross (19,000 net) acres which had 
expired in 2016. The lease was subsequently negotiated with the government of Equatorial Guinea in 2017 and was 
extended.

Developed acreage is comprised of leased acres that are within an area spaced by or assignable to a productive well. 
Undeveloped acreage is comprised of leased acres with defined remaining terms and not within an area spaced by or assignable 
to a productive well. A gross acre is any leased acre in which a working interest is owned. A net acre is comprised of the total of 
the owned working interest(s) in a gross acre expressed in a fractional format. 

23

 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents
Index to Financial Statements

The above table includes certain undeveloped acreage that is set to expire if production is not established or we take no other 
action to extend the terms of the leases, licenses, or concessions within a specified period of time. Approximately 0.9 million 
(including 0.4 million in Suriname and 0.4 million in Gabon), 0.3 million, and 0.1 million net acres will expire in 2018, 2019, 
and 2020, respectively. 

Drilling Activity  The results of crude oil and natural gas wells drilled and completed for each of the last three years were as 
follows:

Net Exploratory Wells
Dry

Total

Productive

Net Development Wells
Dry

Total

Productive

Year Ended December 31, 2017
United States
Israel
Suriname
Total
Year Ended December 31, 2016
United States
Total
Year Ended December 31, 2015
United States
Equatorial Guinea
Cameroon
Other International
Total

—
—
—
—

0.4
0.4

1.5
—
—
—
1.5

—
—
0.2
0.2

0.5
0.5

4.0
—
0.5
0.4
4.9

—
—
0.2
0.2

0.9
0.9

5.5
—
0.5
0.4
6.4

185.3
0.3
—
185.6

156.7
156.7

212.5
0.3
—
—
212.8

—
—
—
—

—
—

—
—
—
—
—

185.3
0.3
—
185.6

156.7
156.7

212.5
0.3
—
—
212.8

Total

185.3
0.3
0.2
185.8

157.6
157.6

218.0
0.3
0.5
0.4
219.2

In addition to the wells drilled and completed in 2017 included in the table above, wells that were in the process of drilling or 
completing at December 31, 2017 were as follows: 

United States
Israel 
Equatorial Guinea
Cameroon
Cyprus
Total

Exploratory(1)

Development(2)

Total

Gross

Net

Gross

Net

Gross

Net

1
1
2
1
1
6

0.5
0.3
0.9
1.0
0.4
3.1

114
5
—
—
—
119

105.0
2.0
—
—
—
107.0

115
6
2
1
1
125

105.5
2.3
0.9
1.0
0.4
110.1

(1) 

(2) 

Includes exploratory wells drilled and suspended awaiting a sanctioned development plan or being evaluated to assess the economic 
viability of the well. 
Includes wells pending completion activities. Israel development wells include the Leviathan 3, 4, 5 and 7 development wells and the 
Tamar Southwest well.

See Item 8. Financial Statements and Supplementary Data – Note 6.  Capitalized Exploratory Well Costs and Undeveloped 
Leasehold Costs for additional information on suspended exploratory wells. 

Domestic Marketing Activities  Crude oil, natural gas, condensate and NGLs produced in the US onshore and Gulf of Mexico 
are sold under short-term and long-term contracts at market-based prices adjusted for location and quality. Onshore production of 
crude oil and condensate is distributed through pipelines and by trucks and rail cars to gatherers, transportation companies and 
refineries. Gulf of Mexico production is distributed through pipelines.

With the advent of US onshore shale gas, demand has increased for access to takeaway pipelines for ballooning production 
volumes. For example, in the Permian Basin, midstream suppliers are working to construct new gathering, transportation and 
processing facilities or to repurpose existing infrastructure in an effort to proactively outpace anticipated production growth as 
well as expected future LNG demand from export facilities on the Gulf Coast.

International Marketing Activities  Our share of crude oil and condensate from the Aseng and Alen fields is sold at market-
based prices to Glencore Energy UK Ltd (Glencore Energy). Our share of crude oil and condensate from the Alba field is sold 
to Glencore Energy under a short-term sales contract, subject to renewal. These products are transported by tanker. 

24

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents
Index to Financial Statements

Natural gas from the Alba field is sold for $0.25 per MMBtu to a methanol plant, an LPG plant, an unaffiliated LNG plant and 
a power generation plant. The sales contract with the methanol plant runs through 2026, and the sales contract with the LNG 
plant runs through 2023. The methanol and LPG plants are owned by affiliated entities accounted for under the equity method. 

In Israel, we sell natural gas from the Tamar field, and have agreements with multiple customers to sell natural gas under long-
term contracts, with initial terms ranging from 15 to 17 years. See Delivery and Firm Transportation Commitments, below. 

Delivery and Firm Transportation Commitments  

Domestic Contracts   We have entered into various long-term gathering, processing and transportation contracts for some of our 
US onshore production, with remaining terms of one to 11 years. We use long-term contracts such as these to provide 
production flow assurance and ensure access to markets for our products at the best possible price and at the lowest possible 
logistics cost.  

Certain of these contracts require us to make payments for any shortfalls in delivering or transporting minimum volumes under 
the commitments. As properties are undergoing development activities, we may experience temporary shortfalls until 
production volumes increase to meet or exceed the minimum volume commitments. 

For 2017, 2016, and 2015, we incurred expense of approximately $47 million, $58 million, and $33 million, respectively, 
related to volume deficiencies and/or unutilized commitments primarily in our US onshore operations. These amounts are 
recorded as marketing expense in our consolidated statements of operations.

We expect to continue to incur expense related to deficiency and/or unutilized commitments in the near-term. Should 
commodity prices decline or if we are unable to continue to develop our properties as planned, or certain wells become 
uneconomic and are shut-in, we could incur additional shortfalls in delivering or transporting the minimum volumes and we 
could be required to make payments in the event that these commitments are not otherwise offset. We continually seek to 
optimize under-utilized assets through capacity release and third-party arrangements, as well as, for example, through the 
shifting of transportation of production from rail cars to pipelines when we receive a higher netback price. We may continue to 
experience these shortfalls both in the near and long-term.

Our financial commitments under these contracts are included in our contractual obligations disclosures. In addition, we have 
retained certain other firm transportation agreements after the completing the Marcellus Shale upstream divestiture. See Item 7. 
Management's Discussion and Analysis of Financial Condition and Results of Operations – Liquidity and Capital Resources – 
Contractual Obligations.

Israel Natural Gas Sales and Purchase Agreements  We currently sell natural gas from our Tamar field, offshore Israel, to the 
IEC and numerous other Israeli purchasers, including independent power producers, cogeneration facilities and industrial 
companies. Most contracts provide for the sale of natural gas over an initial term of 15 to 17 years. Some of the contracts 
provide for an increase or reduction in total quantities, and some contracts are interruptible during certain contract periods. 
Sales prices may be based on an initial base price subject to price indexation over the life of the contract and have a contractual 
floor. The IEC contract provides for price reopeners in certain years with limits on the increase/decrease from the contractual 
price.

Under the contracts, we and our partners have a financial exposure in the event we cannot fully deliver the contract quantities. 
This exposure is capped by contract and will be reflected as a reduction in sales price to the purchaser for periods in which we 
are delivering partial contract quantities, or as a direct payment to the customer under certain circumstances and with a cap. The 
cap is subject to force majeure considerations. We believe that any such sales price adjustments or direct payments would not 
have a material impact on our earnings or cash flows.  

As of December 31, 2017, a total of approximately 5.4 Tcf, gross (1.7 Tcf, net), of natural gas remained to be delivered under 
our Tamar contracts. As of December 31, 2017, we have recorded 2.0 Tcf, net, of proved natural gas reserves, including proved 
developed reserves of 1.8 Tcf, net, and PUD reserves of 212 Bcf, net, for the Tamar field. Based on current production levels 
and future development plans, our available quantities of proved reserves are more than sufficient to meet near-term delivery 
commitments associated with Tamar sale agreements without further capital investment.

We are also actively engaged in domestic and regional marketing activities for future sales of the natural gas reserves recorded 
for the Leviathan field. See Eastern Mediterranean (Israel and Cyprus), above.

Significant Purchasers   BP North American Funding (BP) and Shell Trading (US) (Shell) were the largest single purchasers 
of our 2017 production. Sales to BP accounted for 10% of 2017 total crude oil, natural gas and NGL sales, or 15% of 2017 
crude oil sales. Sales to Shell accounted for 13% of our 2017 total crude oil, natural gas and NGL sales, or 22% of crude oil 
sales. Both BP and Shell purchased crude oil and condensate domestically from our US onshore operations and Gulf of Mexico 
operations.

25

Table of Contents
Index to Financial Statements

No other single purchaser accounted for 10% or more of crude oil, natural gas and NGL sales in 2017. We maintain credit 
insurance associated with specific purchasers and believe that the loss of any one purchaser would not have a material effect on 
our financial position or results of operations since there are numerous potential purchasers of our production. 

Hedging Activities  Commodity prices continue to be volatile and are affected by a variety of factors beyond our control. We 
use derivative instruments to reduce the impact of commodity price uncertainty and increase cash flow predictability relating to 
the marketing of our crude oil and natural gas. As a result of hedging, a portion of near-term cash flow volatility is reduced. 

We exercise strong management of our hedging program with strong oversight by our Board of Directors. For additional 
information, see Item 1A. Risk Factors, Item 7A. Quantitative and Qualitative Disclosures About Market Risk, and Item 8. 
Financial Statements and Supplementary Data – Note 8.  Derivative Instruments and Hedging Activities. 

Regulations 

Exploration for, and production and marketing of, crude oil, natural gas and NGLs are extensively regulated at the federal, 
state, and local levels in the US, and internationally. Crude oil, natural gas and NGL development and production activities are 
subject to various laws and regulations (and orders of regulatory bodies pursuant thereto) governing a wide variety of matters, 
including, among others, allowable rates of production, transportation, prevention of waste and pollution, and protection of the 
environment. Laws affecting the crude oil and natural gas industry are under constant review for amendment or expansion over 
time and frequently impose more stringent requirements on crude oil and natural gas companies. 

Our ability to economically produce and sell crude oil, natural gas and NGLs is affected by a number of legal and regulatory 
factors, including federal, state and local laws and regulations in the US and laws and regulations of foreign nations. Many of 
these governmental bodies have issued rules, regulations and orders that require extensive efforts to ensure compliance, that 
impose incremental costs to comply, and that carry substantial penalties for failure to comply. These laws, regulations and 
orders may restrict the rate of crude oil, natural gas and NGL production below the rate that would otherwise exist in the 
absence of such laws, regulations and orders. The regulatory requirements on the crude oil and natural gas industry often result 
in incremental costs of doing business and consequently affect our profitability. See Item 1A. Risk Factors – We are subject to 
increasing governmental regulations and environmental requirements that may cause us to incur substantial incremental costs.

Internationally, our operations are subject to legal and regulatory oversight by energy-related ministries or other agencies of our 
host countries, each having certain relevant energy or hydrocarbons laws. Examples include: 

• 

• 

• 

• 

the Ministry of Mines and Hydrocarbons, which, under such laws as the hydrocarbons law enacted in 2006 by the 
government of Equatorial Guinea, regulates our exploration, development and production activities offshore Equatorial 
Guinea;
the Ministry of Energy, which regulates our exploration and development activities offshore Israel and the Israeli 
electricity market into which we sell our natural gas production;
the Israeli Antitrust Commission, which reviews Israel's domestic natural gas sales and ownership in offshore blocks and 
leases; and
the Ministry of Energy, Commerce, Industry and Tourism, which regulates our exploration and development activities 
offshore Cyprus. 

Examples of US federal agencies with regulatory authority over our exploration for, and production and sale of, crude oil, 
natural gas and NGLs include: 

• 

• 

• 

• 

• 

• 

the Bureau of Land Management (BLM), the Bureau of Ocean Energy Management (BOEM) and the Bureau of Safety 
and Environmental Enforcement (BSEE), which under laws such as the Federal Land Policy and Management Act, 
Endangered Species Act, National Environmental Policy Act and Outer Continental Shelf Lands Act, have certain 
authority over our operations on federal lands and waters, particularly in the Rocky Mountains and Gulf of Mexico;
the Office of Natural Resources Revenue, which under the Federal Oil and Gas Royalty Management Act of 1982, has 
certain authority over our payment of royalties, rentals, bonuses, fines, penalties, assessments, and other revenue;
the US Environmental Protection Agency (EPA) and the Occupational Safety and Health Administration (OSHA), which 
under laws such as the Comprehensive Environmental Response, Compensation and Liability Act, the Resource 
Conservation and Recovery Act, the Oil Pollution Act of 1990, the Clean Air Act, the Clean Water Act, the Safe Drinking 
Water Act, and the Occupational Safety and Health Act have certain authority over environmental, health and safety 
matters affecting our operations;
the US Fish and Wildlife Service (FWS) and US National Marine Fisheries Service, which under the Endangered Species 
Act have authority over activities that may result in the take of any endangered or threatened species or its habitat;
the US Army Corps of Engineers, which under the Clean Water Act has authority to regulate the construction of 
structures involving the fill of certain waters and wetlands subject to federal jurisdiction, including well pads, pipelines 
and roads;
the Federal Energy Regulatory Commission (FERC), which under laws such as the Energy Policy Act of 2005 has certain 
authority over the marketing and transportation of crude oil, natural gas and NGLs we produce onshore and from the 
Gulf of Mexico; and

26

Table of Contents
Index to Financial Statements

• 

the Department of Transportation, which has certain authority over the transportation of products, equipment and 
personnel necessary to our US onshore and Gulf of Mexico operations.

Other US federal agencies with certain authority over our business include the Internal Revenue Service (IRS) and the SEC. In 
addition, we are governed by the rules and regulations of the NYSE, upon which shares of our common stock are traded.

Among the laws affecting our operations are the following:

Environmental Matters   We take into account the cost of complying with environmental regulations in planning, designing, 
drilling, operating, and abandoning wells. In most instances, the regulatory requirements relate to the handling and disposal of 
drilling and production wastes, water and air pollution control procedures, facility siting and construction, prevention of and 
responses to leaks and spills, and the remediation of petroleum-product contamination. These laws and regulations may require 
the acquisition of a permit before drilling commences, restrict the types, quantities and concentrations of various substances 
that can be released into the environment in connection with drilling and production activities, limit or prohibit construction or 
drilling activities on certain lands lying within wilderness, wetlands, ecologically or seismically sensitive areas, and other 
protected areas, require action to prevent or remediate pollution from current or former operations, such as plugging abandoned 
wells or closing pits, result in the suspension or revocation of necessary permits, licenses and authorizations, require that 
additional pollution controls be installed and impose substantial liabilities for pollution resulting from our operations.

Under state and federal laws, we could be required to remove or remediate previously disposed wastes, including wastes 
disposed of or released by us, or by prior owners or operators, in accordance with current laws, to suspend or cease operations 
in contaminated areas, or to perform remedial well plugging operations or cleanups. The EPA and various state agencies have 
limited the disposal options for hazardous and non-hazardous wastes and may continue to do so. The owner and operator of a 
site, and persons that treated, disposed of, or arranged for the disposal of hazardous substances found at a site, may be liable, 
without regard to fault or the legality of the original conduct, for the release of a hazardous substance into the environment. The 
EPA, state environmental agencies and, in some cases, third parties are authorized to take actions in response to threats to 
human health or the environment and to seek to recover from responsible classes of persons the costs of such action. Moreover, 
it is not uncommon for neighboring landowners and other third parties to file claims for personal injury and property damage 
allegedly caused by the release of hazardous substances, hydrocarbons or other waste products into the environment.

Furthermore, certain wastes generated by our crude oil and natural gas operations that are currently exempt from the definition 
of hazardous waste may in the future be subject to considerably more rigorous and costly operating and disposal requirements. 
Indeed, legislation has been proposed from time to time in Congress to re-categorize certain oil and natural gas exploration, 
development and production wastes as “hazardous wastes.” Also, in December 2016, the EPA agreed in a consent decree to 
review its regulation of oil and gas waste. It has until March 2019 to determine whether any revisions are necessary.

Under federal and state occupational safety and health laws, we must develop and maintain information about hazardous 
materials used, released, or produced in our operations. Certain portions of this information must be provided to employees, 
state and local governmental authorities, and local citizens. We are also subject to the requirements and reporting set forth in 
federal workplace standards.

Moreover, certain state or local laws or regulations and common law may impose liabilities in addition to, or restrictions 
more stringent than, those described herein.

We have made and will continue to make expenditures necessary to comply with environmental requirements. We do not 
believe that compliance with such requirements will have a material adverse effect on our capital expenditures, earnings or 
competitive position. Although such requirements do have a substantial impact on the crude oil and natural gas industry, 
they do not appear to affect us to any greater or lesser extent than other companies in the industry. 

The following is a summary of the more significant US environmental developments and requirements that may affect our 
operations.

Various state and federal statutes such as the Endangered Species Act (ESA) prohibit certain actions that adversely affect 
endangered or threatened species and their habitat, wetlands, migratory birds, marine mammals, or natural resources. Where 
the taking or harm of such species occurs or may occur, or where damages to wetlands or natural resources may occur, the 
government or private parties may act to prevent crude oil and natural gas exploration activities. In particular, a federal or 
state agency could order a complete halt to drilling activities in certain locations or during certain seasons when such 
activities could result in a serious adverse effect upon a protected species. The presence of a protected species in areas 
where we operate could adversely affect future production from those areas and government agencies frequently add to the 
lists of protected species.  For example, listing of the Lesser Prairie Chicken likewise could impact our operations in the 
Delaware Basin. The Lesser Prairie Chicken was removed from the ESA list of endangered species in July 2016 after a 
federal court invalidated the FWS’s listing of the bird as threatened because the FWS failed to give proper consideration to 
voluntary conservation measures; however, the FWS announced in November 2016 an ongoing new status review of the 
Lesser Prairie Chicken to determine whether listing is still warranted. 

27

Table of Contents
Index to Financial Statements

The Federal Water Pollution Control Act of 1972, as amended, also known as the “Clean Water Act” or “CWA,” the Safe 
Drinking Water Act, the Oil Pollution Act and analogous state laws and regulations promulgated thereunder impose 
restrictions and strict controls regarding the discharge of pollutants, including produced waters and other gas and oil wastes, 
into navigable waters. Provisions of the CWA require authorization from the US Army Corps of Engineers, or the “Corps”, 
prior to the placement of dredge or fill material into jurisdictional waters. Spill prevention, control and countermeasure plan 
requirements under federal law require appropriate containment berms and similar structures to help prevent the 
contamination of navigable waters in the event of a petroleum hydrocarbon tank spill, rupture or leak. 

On June 29, 2015, the EPA and Corps jointly published the final rule defining the scope of the EPA’s and Corps’ 
jurisdiction, known as the “Clean Water Rule.” The Clean Water Rule has been challenged in multiple federal courts; 
however, at this time, we cannot predict the outcome of this litigation. Subsequently, the EPA and the Corps proposed a 
rulemaking in June 2017 to repeal the June 2015 rule, and also announced their intent to issue a new rule defining the Clean 
Water Act’s jurisdiction.  Both agencies also published a proposed rule in November 2017 delaying implementation of the 
Clean Water Rule for two years.  As a result, future implementation of the June 2015 rule is uncertain at this time. To the 
extent the rule expands the scope of the CWA’s jurisdiction, we could face increased costs and delays with respect to spill 
prevention, storm water management, and wetlands permitting. We are continuing to monitor the regulatory updates and to 
evaluate the impact of the new rule on our operations. 

Also, on June 28, 2016, the EPA published a final rule prohibiting the discharge of wastewater from onshore unconventional 
oil and natural gas extraction facilities to publicly owned wastewater treatment plants. The EPA is also conducting a study 
of private wastewater treatment facilities (also known as centralized waste treatment, or CWT, facilities) accepting oil and 
natural gas extraction wastewater.  The EPA is collecting data and information related to the extent to which CWT facilities 
accept such wastewater, available treatment technologies (and their associated costs), discharge characteristics, financial 
characteristics of CWT facilities, and the environmental impacts of discharges from CWT facilities.  In addition, the EPA 
previously announced its plans to develop a Notice of Proposed Rulemaking by June 2018, which would describe a 
proposed mechanism - regulatory, voluntary, or a combination of both - to collect data on hydraulic fracturing chemical 
substances and mixtures.

The federal Clean Air Act, as amended, and comparable state laws and regulations, regulate emissions of various air 
pollutants through the issuance of permits and the imposition of other requirements. The EPA has developed, and continues 
to develop, stringent regulations governing emissions of air pollutants at specified sources. New facilities may be required 
to obtain permits before work can begin, and existing facilities may be required to obtain additional permits and incur 
capital costs in order to remain in compliance.  These laws and regulations may increase the costs of compliance for some 
facilities we own or operate, and federal and state regulatory agencies can impose administrative, civil and criminal 
penalties for non-compliance with air permits or other requirements of the federal Clean Air Act and associated state laws 
and regulations.

There also have been a series of recent air regulations and proposals that affect, or that may affect, our operations. In 2012, 
for example, the EPA issued New Source Performance Standards (NSPS) and National Emission Standards for Hazardous 
Air Pollutants to control air emissions associated with crude oil, natural gas and NGL production, including natural gas 
wells that are hydraulically fractured. In addition to addressing emissions from storage tanks and other equipment, those 
regulations required technologies and processes that, while reducing emissions, enable companies to collect additional 
natural gas that can be sold. Specifically, as of January 2015, owners and operators of natural gas wells must use emissions 
reduction technology called “green completions,” technologies that were already widely deployed at wells. The EPA 
received numerous requests for reconsideration of these rules from both industry and the environmental community, and 
court challenges to the rules were also filed. In response, the EPA has issued, and will likely continue to issue, revised rules 
responsive to some of the requests for reconsideration.  In particular, on May 12, 2016, the EPA amended its regulations to 
impose new standards for methane and volatile organic compounds emissions for certain new, modified, and reconstructed 
equipment, processes, and activities across the oil and natural gas sector. However, in a March 28, 2017 executive order, the 
EPA was directed to review the 2016 regulations and, if appropriate, to initiate a rulemaking to rescind or revise them 
consistent with the stated policy of promoting clean and safe development of the nation’s energy resources, while at the 
same time avoiding regulatory burdens that unnecessarily encumber energy production. On June 16, 2017, the EPA 
published a proposed rule to stay for two years certain requirements of the 2016 regulations, including fugitive emission 
requirements. These standards, as well as any future laws and their implementing regulations, may require us to obtain pre-
approval for the expansion or modification of existing facilities or the construction of new facilities expected to produce air 
emissions, impose stringent air permit requirements, or mandate the use of specific equipment or technologies to control 
emissions. To date, these rules have had minimal impact on our business since the reduction of greenhouse gas (GHG) 
emissions already was one of our priorities and we had been working to improve our methods to reduce GHGs through 
operational and business practices. For example, we have undertaken emission reduction projects such as our US Vapor 
Recovery Unit (VRU) program, where we have installed VRUs to capture natural gas that would otherwise be flared on a 
substantial number of our tank batteries. 

28

Table of Contents
Index to Financial Statements

Also, on May 12, 2016, the EPA issued a final rule regarding the criteria for aggregating multiple small surface sites into a 
single source for air-quality permitting purposes applicable to the oil and gas industry. This rule could cause small facilities, 
on an aggregate basis, to be deemed a major source, thereby triggering more stringent air permitting processes and 
requirements, which could increase our compliance costs and may require facility siting and design changes. 

As another prong of the previous US Administration's methane strategy, on November 15, 2016, the BLM finalized a rule to 
reduce the flaring, venting and leaking of methane from oil and gas operations on federal and Indian lands.  The rule 
requires operators to use currently available technologies and equipment to reduce flaring, periodically inspect their 
operations for leaks, and replace outdated equipment that vents large quantities of gas into the air.  The rule also clarifies 
when operators owe the government royalties for flared gas.  State and industry groups have challenged this rule in federal 
court, asserting that the BLM lacks authority to prescribe air quality regulations.  On March 28, 2017, the BLM was 
directed by executive order to review the above rule and, if appropriate, to initiate a rulemaking to rescind or revise it.  
Accordingly, on December 8, 2017, the BLM published a final rule to suspend or delay certain requirements of the 2016 
methane rule until January 17, 2019.  Further legal challenges are expected.  At this time, it is uncertain when, or if, the 
rules will be implemented, and what impact they would have on our operations. It also bears noting that substantially all of 
our US onshore properties are subject to EPA’s requirements for reporting annual GHG emissions. Information in such 
reports could form the basis of further GHG regulations.

In another air development, the EPA announced in October 2015 that it was lowering the primary national ambient air quality 
standard for ozone from 75 parts per billion to 70 parts per billion.  Implementation will take place over several years; however, 
areas that cannot meet the new standard eventually will need to impose additional requirements on sources of VOCs and other 
ozone precursors which could increase the cost of siting and operating our facilities.

Apart from these federal matters, most of the states where we operate have separate authority to regulate operational and 
environmental matters.  

Colorado   In February 2013, the Colorado Oil and Gas Conservation Commission (COGCC) approved setback rules for crude 
oil and natural gas wells and production facilities located in close proximity to occupied buildings.  Previously, the COGCC 
had allowed setback distances of 150 feet in rural areas and 350 feet in high density urban areas. These have been increased to a 
uniform 500 feet statewide setback from occupied buildings and 1,000 feet from high occupancy building units. The setback 
rules also require operators to utilize increased mitigation measures to limit potential drilling impacts to surface owners and the 
owners of occupied building units.  In addition, the rules require advance notice to surface owners, the owners of occupied 
buildings and local governments prior to the filing of an Application for Permit to Drill or Oil and Gas Location Assessment as 
well as outreach and communication efforts by an operator. 

The COGCC also has implemented rules making Colorado the first state to require sampling of groundwater for hydrocarbons 
and other indicator compounds both before and after drilling. Those statewide rules require sampling of up to four water wells 
within a half mile radius of a new crude oil and natural gas well before drilling, between six and 12 months after completion, 
and between five and six years after completion. For the Greater Wattenberg Area, the COGCC requires operators to sample 
only one water well per quarter governmental section before drilling and between six to 12 months after completion. Further, 
the COGCC has adopted rules increasing the maximum penalty for violations of its requirements.

The state environmental agency, the Colorado Department of Public Health and Environment, likewise has adopted measures to 
regulate air emissions, water protection, and waste handling and disposal relating to our crude oil and natural gas exploration 
and production. For air, the Colorado Department of Public Health and Environment has extended the EPA’s emissions 
standards for crude oil and natural gas operations to directly control methane. The final rules, which cover the life cycle of oil 
and gas development, production, and maintenance, reflect a collaborative effort by the Environmental Defense Fund, Noble 
Energy and other oil and gas operators.

Some of the counties and municipalities where we operate in Colorado have adopted their own regulations or ordinances that 
impose additional restrictions on our crude oil and natural gas exploration and production. To date these have not significantly 
impacted our operations. However, a few localities in Colorado have tried to prohibit certain exploration and production 
activities, particularly use of hydraulic fracturing within their boundaries. In May 2016, the Colorado Supreme Court found that 
the local laws intended to increase regulatory requirements on oil and gas development were preempted by existing state law 
and were therefore invalid. See Hydraulic Fracturing, below.

In April 2015, we entered into a joint consent decree (Consent Decree) with the EPA, US Department of Justice, and State of 
Colorado to improve emission control systems at a number of our condensate storage tanks that are part of our upstream oil and 
natural gas operations within the Non-Attainment Area of the DJ Basin. The Consent Decree was entered by the US District 
Court of Colorado on June 2, 2015 and requires us to perform certain activities. All fines required under the Consent Decree 
were paid in 2015; however, the required injunctive relief remains ongoing. Based on currently available information, we have 
concluded that the remaining obligations will not have a material adverse effect on our financial position, results of operations 
or cash flows. See Item 1A. Risk Factors – Our operations require us to comply with a number of US and international laws 

29

Table of Contents
Index to Financial Statements

and regulations, violations of which could result in substantial fines or sanctions and/or impair our ability to do business and 
Item 8. Financial Statements and Supplementary Data – Note 17.  Commitments and Contingencies. 

Texas   Texas has regulations governing conservation matters, including provisions for the unitization or pooling of oil and gas 
properties, the establishment of maximum rates of production from oil and gas wells, the regulation of spacing, and 
requirements for plugging and abandonment of wells. 

In February 2012, the Texas Railroad Commission (RRC) implemented a hydraulic fracturing disclosure rule, requiring Texas 
oil and gas operators to disclose on the FracFocus website, chemical ingredients and water volumes used in hydraulic fracturing 
treatments.

In May 2013, the RRC issued an updated “well integrity rule” that addresses requirements for drilling, casing and cementing 
wells. The rule also includes new testing and reporting requirements, including clarifying that cementing reports must be 
submitted after well completion or after cessation of drilling, whichever is earlier.

In October 2014, the RRC adopted new permit rules for injection wells to address seismic activity concerns within the state. 
Among other things, the rules require companies seeking permits for disposal wells to provide seismic activity data in permit 
applications, provide for more frequent monitoring and reporting for certain wells, and allow the RRC to modify, suspend, or 
terminate permits on grounds that a disposal well is likely to be, or determined to be, causing seismic activity. The RRC has 
used this authority to deny permits for waste disposal wells.

US Offshore Regulatory Developments   Our operations on federal oil and natural gas leases in the Gulf of Mexico are subject 
to regulation by BSEE and BOEM. These leases contain relatively standardized terms and require compliance with detailed 
BSEE and BOEM regulations and orders issued pursuant to various federal laws, including the Outer Continental Shelf Lands 
Act (OCSLA). These laws and regulations are subject to change, and many new requirements, including those related to safety, 
permitting and performance, were imposed by BSEE and BOEM subsequent to the April 2010 Deepwater Horizon incident.

In April 2016, the BSEE issued a final rule entitled “Oil and Gas and Sulfur Operations in the Outer Continental Shelf - 
Blowout Preventer Systems and Well Control,” which updates standards for blowout prevention systems and other well 
controls for offshore oil and gas activities conducted in US federal waters, including the Gulf of Mexico. The final rule, which 
went into effect on July 28, 2016, increases the costs associated with well design, drilling and completion operations, as well as 
ongoing monitoring costs for our wells in the Gulf of Mexico. More recently, pursuant to executive orders dated March 28, 
2017, and April 28, 2017, the BSEE initiated a review of whether the final rule is consistent with the stated policy of 
encouraging energy exploration and production, while ensuring that any such activity is safe and environmentally responsible. 
On October 24, 2017, the BSEE announced - in a report published by the Department of Interior - that it is considering several 
revisions to the rule and that it is in the process of determining the most effective way to engage stakeholders in the process.

Also, in April 2016, the BOEM published a proposed air quality rule that would significantly broaden the obligations of 
operators and lessees in the Outer Continental Shelf, including the Gulf of Mexico, to assess, report and, when appropriate, 
control emissions. Among other items, the proposed rule would expand the types of emissions that must be measured, change 
the boundary for evaluating air emissions, and increase the scope of sources that must be addressed. If adopted as proposed, the 
new rule would likely increase the cost associated with our activities in the Gulf of Mexico. Pursuant to the Executive Orders, 
the BOEM is reviewing the proposed air quality rule. On October 24, 2017, the Department of Interior announced that it is 
currently reviewing recommendations on how to proceed, including promulgating final rules for certain necessary provisions 
and issuing a new proposed rule that may withdraw certain provisions and seek additional input on others.

Additionally, in order to cover the various decommissioning obligations of lessees on the OCS, the BOEM generally requires 
that lessees post some form of acceptable financial assurances that such obligations will be met, such as surety bonds. The 
BOEM recently updated its regulations and program oversight to establish more robust risk management, financial assurance 
and loss prevention requirements for oil and gas operations in the Outer Continental Shelf, including the Gulf of Mexico. On 
July 14, 2016, the BOEM issued an updated Notice to Lessees and Operators (NTL) providing details on revised procedures the 
agency will be using to determine a lessee’s or operator's ability to carry out decommissioning obligations for activities in the 
Outer Continental Shelf, including the Gulf of Mexico. This revised policy institutes new criteria by which the BOEM will 
evaluate the financial strength and reliability of lessees and operators active in the Outer Continental Shelf. If the BOEM 
determines under the revised policy that a lessee or operator does not have the financial ability to meet its decommissioning 
and other obligations, that lessee or operator will be required to post additional financial security as assurance. The revised 
policy originally became effective September 12, 2016; however, the BOEM extended the implementation timeline for six 
months in certain circumstances. Pursuant to the Executive Orders, the BOEM is reviewing the NTL to determine whether 
modifications are necessary to ensure operator compliance with lease terms while minimizing unnecessary regulatory burdens. 
On June 22, 2017, the BOEM announced that, pending its review of the NTL, the implementation timeline would be 
indefinitely extended, subject to certain exceptions. We estimated the impact of the new financial criteria on our operations in 
the Gulf of Mexico and do not believe that the revised policy will have a material impact on our operations in the Gulf of 
Mexico, or on our financial position or cash flows. 

30

Table of Contents
Index to Financial Statements

The National Oceanic and Atmospheric Administration (NOAA) is proposing to expand the boundaries of the Flower Garden 
Banks National Marine Sanctuary in the Gulf of Mexico. NOAA released its draft environmental impact statement (DEIS) on 
the proposed expansion in June 2016, in which it proposed five alternatives for expanding existing sanctuary regulations to new 
geographic areas. Two of these alternatives for sanctuary expansion have the potential to impact certain of our leases which 
could increase drilling, operating and decommissioning costs. The comment period for the expansion alternatives outlined in 
the DEIS expired on August 19, 2016 and the issuance of NOAA's report recommending alternatives is expected in early 2018. 
We are currently evaluating the expansion alternatives and assessing any potential impact on our operations in the Gulf of 
Mexico. 

Climate Change  In recent years, the EPA has finalized a series of greenhouse (GHG) gas monitoring, reporting and emissions 
control rules for the oil and natural gas industry, and the US Congress has, from time to time, considered adopting legislation to 
reduce emissions. In addition, almost one-half of the states have already taken measures to reduce emissions of greenhouse 
gases primarily through the development of greenhouse gas emission inventories and/or regional greenhouse gas cap-and-trade 
programs. 

At the international level, in December 2015, the United States signed the Paris Agreement on climate change and pledged to 
take efforts to reduce GHG emissions and to conserve and enhance sinks and reservoirs of GHGs. The Paris Agreement entered 
into force in November 2016. However, in August 2017, the United States notified the United Nations that it would be 
withdrawing from the Paris Agreement and begin negotiations to either re-enter or negotiate an entirely new agreement with 
more favorable terms for the United States. While the Administration expressed a clear intent to cease implementing the Paris 
Agreement, it is not clear how it plans to accomplish this goal, whether a new agreement can be negotiated, or what terms 
would be included in such an agreement. Furthermore, in response to the announcement, many state and local leaders stated 
their intent to intensify efforts to uphold the commitments set forth in the international accord.

The current state of development of the ongoing international climate initiatives and any related domestic actions make it 
difficult to assess the timing or effect on our operations or to predict with certainty the future costs that we may incur in order 
to comply with future international treaties, legislation or new regulations. However, future restrictions on emissions of GHGs, 
or related measures to encourage use of renewable energy, could have a significant impact on our future operations and reduce 
demand for our products. See also Items 1. and 2. Business and Properties - Regulations and Item 1A. Risk Factors.

Impact of Dodd-Frank Act Section 1504   In June 2016, the Securities and Exchange Commission (SEC) adopted resource 
extraction issuer payment disclosure rules under Section 1504 of the Dodd-Frank Act that would have required resource 
extraction companies, such as us, to publicly file with the SEC beginning in 2019 information about the type and total amount 
of payments made to a foreign government, including subnational governments (such as states and/or counties), or the US 
federal government for each project related to the commercial development of crude oil, natural gas or minerals, and the type 
and total amount of payments made to each government (such rules, the Resource Extraction Issuer Payment Rules).

However, on February 14, 2017, through the signing of a joint resolution passed by the United States Congress under the 
Congressional Review Act, the Resource Extraction Issuer Payment Rules were eliminated. It should be noted that Section 
1504 of the Dodd-Frank Act has not been repealed and that the SEC will now have until February 2018 to issue replacement 
rules to implement Section 1504 of the Dodd-Frank Act, and that under the Congressional Review Act a rule may not be issued 
in “substantially the same form” as the disapproved rule unless it is specifically authorized by a subsequent law. We cannot 
predict whether the SEC will issue replacement rules or, if it does so, whether such replacement rules will again be eliminated 
pursuant to the Congressional Review Act.

Israel Regulatory Environment

Natural Gas Policy and Antitrust Authority  The Framework, as adopted by the Government of Israel, provides clarity on 
numerous matters concerning resource development, including certain fiscal, antitrust and other regulatory matters. The 
Framework provides for the reduction of our ownership interest in the Tamar and Dalit fields to 25% by year-end 2021, while 
enabling the marketing of Leviathan natural gas to Israeli customers. See Item 8. Financial Statements and Supplementary Data 
– Note 4. Acquisitions, Divestiture and Merger.

Israeli Tax Law  Effective December 21, 2016, the Israeli government decreased the corporate income tax rate from 25% to 
24% for 2017 and announced a further rate decrease from 24% to 23% effective January 2018. The change decreased the 
deferred tax expense for 2017 by $12 million. Furthermore, our Israeli operations are subject to the Natural Resources Profits 
Taxation Law, 2011, which imposes a separate additional tax on profits from oil and gas activities (Profits Tax). See Item 8. 
Financial Statements and Supplementary Data – Note 11.  Income Taxes.

Hydraulic Fracturing 

Hydraulic fracturing techniques have been used for decades on the majority of all new onshore crude oil and natural gas wells 
drilled domestically. The process involves the injection of water, sand and chemical additives under pressure into targeted 
subsurface formations to stimulate oil and gas production. We strive to adopt best practices and industry standards and comply 

31

Table of Contents
Index to Financial Statements

with all regulatory requirements regarding well construction and operation. For example, the qualified service companies we 
use to perform hydraulic fracturing, as well as our personnel, monitor rate and pressure to assure that the services are 
performed as planned. Our well construction practices include installation of multiple layers of protective steel casing 
surrounded by cement that are specifically designed and installed to protect freshwater aquifers by preventing the migration of 
fracturing fluids into those aquifers. To help reduce our operational demand for freshwater and need for disposal, we are 
currently developing technology and infrastructure to expand our water recycling capacity in the DJ and Delaware Basins. We 
believe that these processes help ensure hydraulic fracturing is safe and does not and will not pose a risk to water supplies, the 
environment or public health. 

Although hydraulic fracturing is regulated primarily at the state level, legislation has been proposed in recent sessions of 
Congress to amend the Safe Drinking Water Act to repeal the exemption for hydraulic fracturing from the definition of 
“underground injection,” to require federal permitting and regulatory control of hydraulic fracturing, and to require disclosure 
of the chemical constituents of the fluids used in the fracturing process. Furthermore, several federal agencies have asserted 
regulatory authority over certain aspects of the process. For example, the EPA has taken the position that hydraulic fracturing 
with fluids containing diesel fuel is subject to regulation under the Underground Injection Control program, specifically as 
“Class II” Underground Injection Control wells under the Safe Drinking Water Act. In addition, the EPA previously announced 
its plans to develop a Notice of Proposed Rulemaking by June 2018, which would describe a proposed mechanism - regulatory, 
voluntary, or a combination of both - to collect data on hydraulic fracturing chemical substances and mixtures.

In addition, on March 26, 2015, the Bureau of Land Management (BLM) published a final rule governing hydraulic fracturing 
on federal and Indian lands.  The rule requires public disclosure of chemicals used in hydraulic fracturing, implementation of a 
casing and cementing program, management of recovered fluids, and submission to the BLM of detailed information about the 
proposed operation, including wellbore geology, the location of faults and fractures, and the depths of all usable water.  On June 
21, 2016, the United States District Court for Wyoming set aside the rule, holding that the BLM lacked Congressional authority 
to promulgate the rule.  The BLM has appealed the decision to the Tenth Circuit Court of Appeals. On March 28, 2017, an 
executive order was signed, directing the BLM to review the rule and, if appropriate, to initiate a rulemaking to rescind or 
revise it.  Accordingly, on December 29, 2017, the BLM published a final rule to rescind the 2015 hydraulic fracturing rule. 
Further legal challenges are expected.  At this time, it is uncertain when, or if, the rules will be implemented, and what impact 
they would have on our operations.

Furthermore, governments and agencies at all levels from federal to municipal are studying the potential environmental impacts 
of hydraulic fracturing and evaluating the need for further requirements. These ongoing or proposed studies could spur 
initiatives to further regulate hydraulic fracturing, and could ultimately make it more difficult or costly for us to perform 
fracturing and increase our costs of compliance and doing business.

In June 2012, OSHA and the National Institute of Occupational Safety and Health (NIOSH) issued a joint hazard alert for 
workers who use silica (sand) in hydraulic fracturing activities. The following year saw the agency formally propose to lower 
the permissible exposure limit for airborne silica. In 2016, OSHA finalized a lower exposure limit for silica along with stricter 
silica work practices. For hydraulic fracturing, the new obligations start to take effect in 2018. OSHA also has prepared 
guidance identifying additional workplace hazards resulting from hydraulic fracturing and ways to reduce exposure to those 
hazards.  

To date, hydraulic fracturing has been regulated primarily at the state level, and all of the states where our US onshore 
operations are located (including Colorado and Texas) have developed such requirements. See Regulations - Colorado and 
Texas, above. Also, state and federal regulatory agencies recently have focused on a possible connection between the operation 
of injection wells used for oil and gas waste disposal and seismic activity, which some have termed "induced seismicity." In a 
few instances, operators of injection wells in the vicinity of seismic events have been ordered to reduce injection volumes or 
suspend operations. Some state regulatory agencies have modified their regulations to account for induced seismicity with 
regard to the operation of injection wells used for oil and gas waste disposal. Increased regulation and attention given to 
induced seismicity in the states where we operate could lead to greater opposition, including litigation, to oil and gas activities 
utilizing injection wells for waste disposal. 

Several states, including Colorado and Texas, have adopted regulations requiring disclosure of certain information regarding 
the components and chemicals used in the hydraulic-fracturing process. These state regulations allow disclosure through the 
public registry FracFocus.org, which is operated jointly by the Interstate Oil & Gas Compact Commission and the Ground 
Water Protection Council. Disclosure through the FracFocus web site includes ways to protect proprietary information and we 
are currently providing disclosure information on FracFocus.org for all US onshore areas in which we operate. 

Additional Information  See: 

Items 1. and 2. Business and Properties – Regulations;
• 
Item 1A. Risk Factors; and
• 
•  Risk and Insurance Program.

32

Table of Contents
Index to Financial Statements

Risk and Insurance Program

As protection against financial loss resulting from many, but not all operating hazards, we maintain insurance coverage, 
including certain physical damage, business interruption (loss of production income), employer's liability, third party liability, 
worker's compensation insurance and certain insurance related to cyber security. We maintain insurance at levels that we 
believe are appropriate and consistent with industry practice and we regularly review our potential risks of loss and the cost and 
availability of insurance and the company's ability to sustain uninsured losses, and revise our insurance program accordingly. 

Availability of insurance coverage, subject to customary deductibles and recovery limits, for certain perils such as war or 
political risk is often excluded or limited within property policies. In Israel and Equatorial Guinea, we insure against acts of 
war and terrorism in addition to providing insurance coverage for normal operating hazards facing our business. Additionally, 
as being part of critical national infrastructure, the Israel offshore and onshore assets are included in a special property coverage 
afforded under the Israeli government's Property Tax and Compensation Fund Law; however, the amount of financial recovery 
through the fund is not guaranteed.

We have a risk assessment program that analyzes safety and environmental hazards, including cyber threats, and establishes 
procedures, work practices, training programs and equipment requirements, including monitoring and maintenance rules, for 
continuous improvement. We also use third party consultants to help us identify and quantify our risk exposures at major 
facilities. We have a robust prevention program and continue to manage our risks and operations such that we believe the 
likelihood of a significant event is remote. However, if an event occurs that is not covered by insurance, not fully protected by 
insured limits or our non-operating partners are not fully insured, it could have a material adverse impact on our financial 
condition, results of operations and cash flows. See Item 1A. Risk Factors.

Undeveloped Oil and Gas Leases

Oil and gas exploration is a lengthy process of obtaining data, evaluating, and de-risking prospects, and it takes time to develop 
resources in a responsible manner. The period of time from lease acquisition to discovery can take many years of ongoing 
effort. 

We begin by leasing acreage (or deepwater lease blocks) from individuals, other operators or the host government. It may take 
years for us to assemble sufficient acreage to cover the areal extent of a prospect that we wish to explore.  

Once the acreage position is assembled, we obtain seismic data either through purchase of available data or by contracting for 
seismic services. Our exploration staff then begin a lengthy process of analyzing the seismic and other data in order to identify 
a potential optimal location for drilling an initial exploratory well. Once we decide to drill an exploratory well, we must obtain 
permits and contract a drilling rig with the specifications for the depth and well pressures which we expect to drill.   

If there is a discovery, we may need to obtain additional data and/or drill appraisal wells in order to estimate the extent of the 
reservoir and the volume of resources that could potentially be recovered. Appraisal or development drilling requires additional 
time to contract for an appropriate drilling rig, and obtain pipe, other equipment, and supplies. 

Competition 

The crude oil and natural gas industry is highly competitive. We encounter competition from other crude oil and natural gas 
companies in all areas of operations, including the acquisition of seismic data and lease rights on crude oil and natural gas 
properties and for the labor and equipment required for exploration and development of those properties. Our competitors 
include major integrated crude oil and natural gas companies, state-controlled national oil companies, independent crude oil 
and natural gas companies, service companies engaging in exploration and production activities, drilling partnership programs, 
private equity, and individuals. Many of our competitors are large, well-established companies. Such companies may be able to 
pay more for seismic information and lease rights on crude oil and natural gas properties and exploratory prospects and to 
define, evaluate, bid for and purchase a greater number of properties and prospects than our financial or human resources 
permit. Our ability to acquire additional properties and to discover reserves in the future will be dependent upon our ability to 
evaluate and select suitable properties and to consummate transactions in a highly competitive environment. See Item 1A. Risk 
Factors.

Employees 

As of December 31, 2017, we had 2,277 full-time employees. 

33

Table of Contents
Index to Financial Statements

Offices 

Our principal corporate office is located at 1001 Noble Energy Way, Houston, Texas, 77070. We maintain additional regional 
exploration and/or production offices primarily in Denver, Colorado; Greeley, Colorado; Pecos, Texas; Dilley, Texas; and in 
Israel, Cyprus, and Equatorial Guinea. 

Title to Properties 

We believe that our title to the various interests set forth above is satisfactory and consistent with generally accepted industry 
standards, subject to exceptions that would not materially detract from the value of the interests or materially interfere with 
their use in our operations. Individual properties may be subject to burdens such as royalty, overriding royalty and other 
outstanding interests customary in the industry. In addition, interests may be subject to obligations or duties under applicable 
laws or burdens such as production payments, net profits interest, liens incident to operating agreements and for current taxes, 
development obligations under crude oil and natural gas leases or capital commitments under PSCs or exploration licenses. We 
have also dedicated certain of our US onshore acreage to Noble Midstream Partners for the provision of midstream services to 
us.

Furthermore, while the majority of our assets are held by production, certain of our assets, such as our Eagle Ford Shale and 
Delaware Basin properties, are held through continuous development obligations. Therefore, we are contractually obligated to 
fund a level of development activity in these areas and failure to meet these obligations may result in the loss of a lease. 

Title Defects   Subsequent to a lease or fee interest acquisition transaction, the buyer usually has a period of time in which to 
examine the leases for title defects. Adjustments for title defects are generally made within the terms of the sales agreement, 
which may provide for arbitration between the buyer and seller. 

Conflicts with Surface Rights   Mineral rights are property rights that include the right to use land surface that is reasonably 
necessary to access minerals beneath. Lawsuits regarding conflicts between surface rights and mineral rights are currently 
pending in several states. In several cases, owners of surface rights are suing various companies to prevent companies from 
using their land surface to drill horizontal wells to explore for or produce hydrocarbons from neighboring mineral tracts. If a 
plaintiff were to prevail in such a case, it could become more difficult and expensive for a company to place multi-acre well 
pads and/or limit the length of horizontal wells drilled from a pad.

Available Information

Our website address is www.nblenergy.com. Available on this website under “Investors – Financial Information – SEC Filings,” 
free of charge, are our annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, proxy 
statements, Forms 3, 4 and 5 filed on behalf of directors and executive officers and amendments to those reports as soon as 
reasonably practicable after such materials are electronically filed with or furnished to the SEC. Alternatively, you may access 
these reports at the SEC’s website at www.sec.gov.

Also posted on our website under “Our Story – Transparency – Corporate Governance - Committee Charters”, and available in 
print upon request made by any stockholder to the Investor Relations Department, are charters for our Audit Committee, 
Compensation, Benefits and Stock Option Committee, Corporate Governance and Nominating Committee, and Environment, 
Health and Safety Committee. Copies of the Code of Conduct and the Code of Ethics for Chief Executive and Senior Financial 
Officers (the Codes) are also posted on our website under the “Other Governance Documents” section. Within the time period 
required by the SEC and the NYSE, as applicable, we will post on our website any modifications to the Codes and any waivers 
applicable to senior officers as defined in the applicable Code, as required by the Sarbanes-Oxley Act of 2002.

Item 1A.  Risk Factors

Described below are certain risks that we believe are applicable to our business and the oil and gas industry in which we operate. 
There may be additional risks that are not presently material or known. You should carefully consider each of the following risks 
and all other information set forth in this Annual Report on Form 10-K. 

If any of the events described below occur, our business, financial condition, results of operations, cash flows, liquidity or 
access to the capital markets could be materially adversely affected. In addition, the current global economic and political 
environment intensifies many of these risks. 

The oil and gas industry is cyclical and an extended period of suppressed commodity prices could have material adverse 
effects on our operations, our liquidity, and the price of our common stock.

Our ability to operate profitably, maintain adequate liquidity, grow our cash flow and pay dividends on our common stock 
depend upon the prices we receive for our crude oil, natural gas, and NGL production. Commodity prices are cyclical and 
subject to supply and demand dynamics. For the past three years, following the significant decline that began in late 2014, 
crude oil prices, in particular, have been trading in a much lower range. While we have witnessed a certain degree of 
commodity price improvement, we expect that economic, geopolitical, and supply and demand forces will remain volatile. As a 

34

Table of Contents
Index to Financial Statements

result we may continue to operate in a soft market, with sustained lower commodity prices, subject to further decline if the 
excess of supply over demand increases.

If commodity prices continue to trade at low or lower levels for an extended period, one or more of the following could occur:

• 
• 

• 
• 
• 
• 
• 

• 
• 
• 
• 

• 

• 
• 

• 
• 

significant reductions of our revenues, profit margins, operating income and cash flows;
reduction in the amount of crude oil, natural gas and NGLs that we can produce economically, leading to shut-in or 
early abandonment of producing wells and increased capital requirements for abandonment operations;
certain properties in our portfolio becoming economically unviable;
impairments of proved or unproved properties or other long-lived assets;
loss of undeveloped acreage if our production is shut-in or we are unable to make scheduled delay rental payments;
use of cash flow to satisfy minimum obligations under throughput agreements if production is suspended;
reduction, or suspension, of our 2018 or future capital investment programs, resulting in a reduced ability to develop 
our reserves;
delay, postponement or cancellation of some of our exploration or development projects;
inability to meet exploration commitments, leading to loss of leases or exploration rights;
divestments of properties to generate funds to meet cash flow or liquidity requirements;
limitations on our financial condition, liquidity, including access to sources of capital, such as debt and equity, and/or 
ability to finance planned capital expenditures and operations; 
failure of our partners to fund their share of development costs or obtain financing could result in delay or cancellation 
of future projects, thus limiting our growth and future cash flows;
inability to meet scheduled interest and/or debt payments or payments due under operating or capital leases;
a series of credit rating downgrades or other negative rating actions which could increase our cost of financing and 
may increase our requirements to post collateral as financial assurance of performance under certain other contracts 
which, in turn, could have a negative impact on our liquidity;
changes in corporate structure that could lead to loss of key personnel and interrupt our business activities; and
reduction or suspension of dividends on our common stock.

In addition, lower commodity prices, including declines in commodity forward price curves, may result in the following:

• 
• 
• 

declines in our stock price;
additional counterparty credit risk exposure on commodity hedges and joint venture receivables; and
a reduction in the carrying value of goodwill.

Our hedging arrangements in place will not fully mitigate the effects of commodity price volatility. 

Furthermore, certain crude oil demand estimates suggest a hypothetical point in the future when global oil demand reaches its 
peak demand level. The International Energy Agency's 450 Scenario sets out an energy pathway consistent with the goal of 
limiting the global increase in temperature to 2°C by limiting concentration of greenhouse gases in the atmosphere to around 
450 parts per million of CO2. Under this scenario, global oil demand peaks by 2020, and the subsequent decline in demand 
accelerates year-on-year, so that by the late 2020s global demand is falling by over one million barrels per day every year. This 
decline in demand, if it occurs, would negatively impact commodity prices as well as our ability to explore for and develop our 
crude oil and natural gas resources.

Markets and prices for crude oil, natural gas and NGLs depend on factors beyond our control, factors including, among others:

• 

• 

• 
• 
• 
• 

• 
• 

• 

• 

global demand for crude oil, natural gas and NGLs as impacted by economic factors that affect gross domestic product 
growth rates of countries around the world; 
global supply for crude oil, natural gas and NGLs as impacted by OPEC and non-OPEC countries (e.g. US, Russia, 
Canada); 
technology advances that increase crude oil, natural gas and NGL production, thereby increasing supply;
new technologies that promote fuel efficiency and reduce energy consumption;
developments in the global LNG market, including exports from the US;
geopolitical conditions and events, including generational leadership or regime changes, changes in government 
energy policies, including imposed price controls and/or product subsidies, or instability/armed conflict in 
hydrocarbon-producing regions;
fluctuations in US dollar exchange rates, the currency in which the world's crude oil trade is generally denominated;
the price and availability of alternative fuels, including coal, solar, wind, nuclear energy and biofuels, as well as the 
availability of battery storage;
the long-term impact on the crude oil market of the use of natural gas and electricity as an alternative fuel for road 
transportation or the use of natural gas as fuel for electricity generation impacting the demand for electricity;
fuel efficiency regulations, such as the Corporate Average Fuel Economy (CAFE) standards, and its impacts on 
demand for crude oil as a transportation fuel;

35

Table of Contents
Index to Financial Statements

• 
• 
• 
•  weather conditions;
• 
• 

the availability of pipeline capacity/infrastructure as well as refining capacity;
the level and effect of trading in commodity futures markets, including by commodity price speculators and others;
the effectiveness of worldwide conservation measures;

access to government-owned and other lands for exploration and production activities; and
domestic and foreign governmental regulations and taxes.

Sector cost inflation could adversely affect our ability to execute our exploration and development plans on a timely basis 
and within our budget.

Our industry is cyclical and third party oilfield materials, service and supply costs are also subject to supply and demand 
dynamics. During periods of decreasing levels of industry exploration and production, the demand for, and cost of, drilling rigs 
and oilfield services decreases. Conversely, during periods of increasing levels of industry activity, the demand for, and cost of, 
drilling rigs and oilfield services increases. 

During 2017, increases in US onshore drilling and completion activity resulted in higher demand for oilfield services. As a 
result, the costs of drilling, equipping and operating wells and infrastructure began to experience some inflation. If this trend 
continues, and if the commodity price recovery is robust, we expect industry exploration and production activities to continue 
to increase, resulting in even higher demand for oilfield services and supplies, which could result in significant sector price 
inflation. In addition, the costs of such items could increase and their availability may become limited, particularly in basins of 
relatively higher activity. Potential scarcity of competent service personnel may impact our ability to execute our exploration 
and development plans in a timely and profitable manner.  

In addition, regulatory changes, such as those related to hydraulic fracturing or water disposal, may also result in reduced 
availability and/or higher costs for rigs and services. As a result, drilling rigs and oilfield services may not be available at rates 
that provide a satisfactory return on our investment. 

Our international operations may be adversely affected by economic and geopolitical developments.

We have significant international operations, with approximately 27% of our 2017 total consolidated sales volumes and 
approximately 52% of our total proved reserves as of December 31, 2017 attributable to our international operations in Israel 
and Equatorial Guinea. We also conduct exploration activities in other international areas. Our operations may be adversely 
affected by political and economic developments, including the following:

• 

• 

• 
• 
• 

• 

• 

renegotiation, modification or nullification of existing contracts, such as may occur pursuant to future regulations 
enacted as a result of changes in Israel's antitrust, export and natural gas development policies, or the hydrocarbons 
law enacted in 2006 by the government of Equatorial Guinea, which can result in an increase in the amount of 
revenues that the host government receives from production (government take) or otherwise decrease project 
profitability;
loss of revenue, property and equipment as a result of actions taken by host nations, such as expropriation or 
nationalization of assets or termination of contracts; 
disruptions caused by territorial or boundary disputes in certain international regions; 
changes in drilling or safety regulations;
laws and policies of the US and foreign jurisdictions affecting trade, foreign investment, taxation and business 
conduct;
potential for Israel natural gas production and regional exports to be interrupted by political conditions and events, and 
regional instability or armed conflict in the region;
difficulties enforcing our rights against a governmental agency because of the doctrine of sovereign immunity and 
foreign sovereignty over international operations;

•  US and international monetary policies impacting foreign exchange or repatriation restrictions in countries in which 

we conduct business;

•  war, piracy, acts of terrorism or civil unrest; and
• 

other hazards arising out of foreign governmental sovereignty over areas in which we conduct operations.

Such political and economic developments could have a negative impact on our results of operations and cash flows and reduce 
the fair values of our properties, resulting in impairment charges. 

Our operations may be adversely affected by changes in the fiscal regimes and related government policies and regulations 
in the countries in which we operate.

Fiscal regimes impact oil and gas companies through laws and regulations governing resource access along with government 
participation in oil and gas projects, royalties and taxes. We operate in the US and other countries whose fiscal regimes may 
change over time. Changes in fiscal regimes result in an increase or decrease in the amount of government financial take from 
developments, and a corresponding decrease or increase in the revenues of an oil and gas company operating in that particular 

36

Table of Contents
Index to Financial Statements

country.  For example, a significant portion of our production comes from Israel and Equatorial Guinea; therefore, changes in 
or uncertainties related to the fiscal regimes of these countries could have a significant impact on our operations and financial 
performance. Further, we cannot predict how government agencies or courts will interpret existing regulations and tax laws or 
the effect such interpretations could have on our business.

Many governments globally are seeking additional revenue sources, including, potentially, increases in government financial 
take from oil and gas projects. In developing nations, governments may seek additional revenues to support infrastructure and 
economic development and for social spending. In many nations of the Organisation for Economic Cooperation and 
Development (OECD), governments continue to incur significant budget deficits and growing national debt levels, as well as 
pressure from financial markets to address structural spending imbalances.  

The OECD Base Erosion and Profit Sharing (BEPS) initiative aims to standardize and modernize global tax policy and 
disclosure of financial and operational data with tax authorities. The BEPS's recommendations are being widely adopted by the 
majority of the foreign jurisdictions in which we operate and many of these jurisdictions are party to the Multilateral 
Convention to Implement Tax Treaty Related Measures to Prevent Base Erosion and Profit Shifting. Progress on the 
implementation of BEPS measures and development of tax authority interpretation could result in changes to tax policies, 
including transfer pricing policies. To the extent such changes significantly increase the overall tax imposed on currently 
producing projects, these projects could become less economic, or wholly uneconomic, thereby reducing the amount of proved 
reserves we record and cash flows we receive, and possibly resulting in asset impairment charges. 

Changes in fiscal regimes have long-term impacts on our business strategy, and fiscal uncertainty makes it difficult to formulate 
and execute capital investment programs. The implementation of new, or the modification of existing, laws or regulations 
increasing the tax costs on our business could disrupt our business plans and negatively impact our operations and our stock 
price in the following ways, among others: 

• 
• 

• 
• 

• 

• 

• 

restrict resource access or investment in lease holdings;
limit or cancel exploration and/or development activities, which could have a long-term negative impact on the 
quantities of proved reserves we record and inhibit future production growth; 
have a negative impact on the ability of us and/or our partners to obtain financing;
reduce the profitability of our projects, resulting in decreases in net income and cash flows with the potential to make 
future investments uneconomical;
result in currently producing projects becoming uneconomic, to the extent fiscal changes are retroactive, thereby 
reducing the amount of proved reserves we record and cash flows we receive, and possibly resulting in asset 
impairment charges;
require that valuation allowances be established against deferred tax assets, with offsetting increases in income tax 
expense, resulting in decreases in net income and cash flow; and/or
restrict our ability to compete with imported volumes of crude oil or natural gas.

Tax laws and regulations may change over time, and could adversely affect our business and financial condition.

On December 22, 2017, the US Congress enacted the Tax Cuts and Jobs Act (Tax Reform Legislation). The Tax Reform 
Legislation, among other things, (i) permanently reduces the US corporate income tax rate to 21% beginning in 2018, (ii) 
repeals the corporate alternative minimum tax (AMT) allowing for corresponding refunds of prior period AMT credits,  (iii) 
provides for a five year period of 100% bonus depreciation followed by a phase-down of the bonus depreciation percentage, 
(iv) imposes a new limitation on the utilization of net operating losses generated in taxable years beginning after December 31, 
2017, and (v) provides for more general changes to the taxation of corporations, including changes to the deductibility of 
interest expense, the adoption of a modified territorial tax system, assessing a repatriation tax or “toll-charge” on undistributed 
earnings and profits of US-owned foreign corporations, and introducing certain anti-base erosion provisions. The Tax Reform 
Legislation is complex and far-reaching and could eliminate or postpone certain tax deductions that currently are available with 
respect to oil and gas development, or increase costs.  The ultimate impact of the Tax Reform Legislation may differ from our 
estimates due to changes in interpretations and assumptions made by us as well as additional regulatory guidance that may be 
issued, and our business and financial condition could be adversely affected.

In addition, from time to time, legislation has been proposed that, if enacted into law, would make significant changes to US 
federal and state income tax laws, including (i) the elimination of the immediate deduction for intangible drilling and 
development costs, (ii) the repeal of the percentage depletion allowance for oil and natural gas properties; and (iii) an extension 
of the amortization period for certain geological and geophysical expenditures. While these specific changes are not included in 
the Tax Reform Legislation, no accurate prediction can be made as to whether any such legislative changes will be proposed or 
enacted in the future, or the timing of any such action. The elimination of such US federal tax deductions, as well as any other 
changes to or the imposition of new federal, state, local or non-US taxes (including the imposition of, or increases in 
production, severance or similar taxes) could adversely affect our business and financial condition.

37

Table of Contents
Index to Financial Statements

We are subject to increasing governmental regulations and environmental requirements that may cause us to incur 
substantial incremental costs.

Our industry is subject to complex laws and regulations adopted or promulgated by international, federal, state and local 
authorities relating to the exploration for, and the development, production and marketing of, crude oil, natural gas and NGLs. 
As the various government and/or regulatory bodies issue or rescind various regulations, our operations are subject to 
significant volatility in response to the issuance, interpretation and application of these regulations.

Changes in price controls, taxes and environmental laws relating to our industry have the ability to substantially affect crude 
oil, natural gas and NGL production, operations and economics. Environmental laws, in particular, can change frequently, often 
become stricter and at times may force us to incur additional costs as changes are implemented.

We cannot always predict with certainty how agencies or courts will interpret existing laws and regulations or the effect these 
interpretations may have on our business or financial condition.

Additionally, the unintentional discharge of natural gas, crude oil, or other pollutants into the air, soil or water may give rise to 
liabilities on our part to government agencies and/or third parties, and may require us to incur costs to achieve remediation 
objectives and/or requirements. 

In April 2015, for example, we entered into a Consent Decree with the US EPA, US Department of Justice and State of 
Colorado to improve emission control systems at a number of our condensate storage tanks in the DJ Basin. The Consent 
Decree required us to pay a civil penalty and to perform certain injunctive relief activities, mitigation projects, and 
supplemental environmental projects. We continue to incur costs associated with these activities. In addition, compliance with 
the Consent Decree could result in the temporary shut in or permanent plugging and abandonment of certain wells and 
associated tank batteries within the Non-Attainment Area of the DJ Basin. 

Noncompliance with existing or future legislation or regulations could potentially result in an increased risk of civil or criminal 
fines or sanctions. For example, fines or sanctions associated with a well incident or spill could well exceed the actual cost of 
containment and cleanup. 

Further expansion of environmental, safety and performance regulations or an increase in liability for drilling or production 
activities, including punitive fines, may have one or more of the following impacts on our business:

• 
• 
• 
• 
• 
• 

• 

increase the costs of drilling exploratory and development wells;
cause delays in, or preclude, the development of our projects resulting in longer development cycle times;
result in additional operating and capital costs;
divert our cash flows from capital investments in order to maintain liquidity;
increase or remove liability caps for claims of damages from oil spills;
increase our share of civil or criminal fines or sanctions for actual or alleged violations if a well incident were to 
occur; and
limit our ability to obtain additional insurance coverage, at a level that balances the cost of insurance and our desired 
rates of return, to protect against any increase in liability.

Any of the above operating or financial factors may result in a reduction of our cash flows, profitability, and the fair value of 
our properties or reduce our financial flexibility. Because we strive to achieve certain levels of return on our projects, an 
increase in our financial responsibility could result in certain of our planned projects becoming uneconomic. See Items 1. and 
2. Business and Properties – Regulations.

We face various risks associated with global populism and general political uncertainty.

Following the 2008/2009 global financial crisis, the world has experienced lower economic growth versus the levels attained in 
previous decades. This has resulted in economic stagnation for certain citizens and, as a result, there are concerns around jobs, 
economic well-being and wealth distribution. Globally, certain individuals and organizations are attempting to focus the 
public's attention on income and wealth distribution and implement income and wealth redistribution policies.

In addition, if efforts to challenge and change individual and/or corporate taxation are successful, they could result in increased 
taxation on individuals and/or corporations, as well as, potentially, increased regulation on companies and financial institutions. 
These measures would further burden companies and individuals with additional tax costs. 

Recent events have intensified these risks. In the US, the growing trends toward populism and political polarization, has 
resulted in uncertainty regarding potential changes in regulations, fiscal policy, social programs, domestic and foreign relations 
and international trade policies. Global uncertainty and/or reductions in global trade activities could contribute to slower 
economic growth which could negatively impact business and commerce.  

Potential changes in relationships among the US, China and Russia, or among China, Russia and other countries, can have 
significant impacts on the balance of power, as well as on global trade, with further impacts on both global and local 

38

Table of Contents
Index to Financial Statements

economies. In addition, changes in the relationships between the US and its neighbors, such as Mexico, can have significant, 
potentially negative, impacts on commerce. In Europe, the populist movement has resulted in the Brexit vote and increasing 
populist demands and rises in nationalism could have a negative impact on economic policy and consequently pose a potential 
threat to the unity of the European Union.   

Our ability to respond to these developments or comply with any resulting new legal or regulatory requirements, including 
those involving economic and trade sanctions, as well as any potential increased tax expense, could reduce our ability to 
negotiate the sale of our products, increase our costs of doing business, reduce our financial flexibility and otherwise have a 
material adverse effect on our business, financial condition and results of our operations.

We face various risks associated with the trend toward increased anti-oil and gas development activity. 

In recent years, we have seen significant growth in opposition to oil and gas development both in the US and globally. 

Companies in our industry can be the target of opposition to hydrocarbon development from stakeholder groups, including 
national, state and local governments, regulatory agencies, non-government organizations and public citizens. This opposition 
is focused on attempting to limit or stop hydrocarbon development. Examples of such opposition include: efforts to reduce 
access to public and private lands; delaying or canceling permits for drilling or pipeline construction; limiting or banning 
industry techniques such as hydraulic fracturing, and/or adding restrictions on or the use of water and associated disposal; 
imposition of set-backs on oil and gas sites; delaying or denying air-quality permits; advocating for increased regulations, 
punitive taxation, or citizen ballot initiatives or moratoriums on industry activity; and the use of social media channels to cause 
reputational harm. We have experienced these efforts in Colorado in the past and it is likely they will continue into the future.   
Recent efforts by the US Administration to modify federal oil and gas related regulations could intensify the risk of anti-
development efforts from grass roots opposition.  

Our need to incur costs associated with responding to these anti-development efforts, including legal challenges, or complying 
with any new legal or regulatory requirements resulting from these efforts, could have a material adverse effect on our business, 
financial condition and results of operations. 

Restricted land access could reduce our ability to explore for and develop crude oil, natural gas and NGL reserves. 

Our ability to adequately explore for and develop crude oil, natural gas and NGL resources is affected by a number of factors 
related to access to land. Examples of factors which reduce our access to land include, among others:

• 

• 

• 
• 
• 

• 
• 
• 

new municipal, state or federal land use regulations, which may restrict drilling locations or certain activities such as 
hydraulic fracturing;
local and municipal government control of land or zoning requirements, which can conflict with state law and deprive 
land owners of property development rights;
landowner, community and/or governmental opposition to infrastructure development;
regulation of federal and Indian land by the BLM;
anti-development activities, which can reduce our access to leases through legal challenges or lawsuits, disruption of 
drilling, or damage to equipment;
the presence of threatened or endangered species or of their habitat;
disputes regarding leases; and
disputes with landowners, royalty owners, or other operators over such matters as title transfer, joint interest billing 
arrangements, revenue distribution, or production or cost sharing arrangements.

Loss of access to land for which we own mineral rights could result in a reduction in our proved reserves and a negative impact 
on our results of operations and cash flows. Reduced ability to obtain new leases could constrain our future growth and 
opportunity set by limiting the expansion of our upstream portfolio. In addition, loss of rights granted under surface use 
agreements, rights-of-way, surface leases or other easement rights, could disrupt or prohibit our ability to construct or operate 
midstream assets and could have a material adverse effect on our business, financial condition, results of operations, and cash 
flows.

A change in international and/or US federal and state climate policy could have a significant impact on our operations and 
profitability.

Domestic and international response to climate and related energy issues are matters of public policy consideration. We are 
currently in a period of increasing uncertainty as to these matters, and, at this time, it is difficult to anticipate how the current 
US Administration, or other entities, may act on exiting or new laws and regulations. As compared with certain large multi-
national, integrated energy companies, we do not conduct fundamental research regarding the scientific inquiry of climate 
change. However, we will continue to closely monitor all relevant developments in this regard. Changes in international, 
federal or state laws and regulations regarding climate policy could have a significant negative impact on our ability to explore 
for and develop crude oil and natural gas resources or reduce demand for our products.

39

Table of Contents
Index to Financial Statements

In recent years, international, federal, state and local governments have taken steps to reduce emissions of greenhouse gases. 
The EPA has finalized a series of greenhouse gas monitoring, reporting and emissions control rules for the oil and natural gas 
industry, and the US Congress has, from time to time, considered adopting legislation to reduce emissions. Almost one-half of 
states in the US have taken measures to reduce emissions of greenhouse gases primarily through the development of 
greenhouse gas emission inventories and/or regional greenhouse gas cap-and-trade programs. For a description of existing and 
proposed greenhouse gas rules and regulations, see Items 1. and 2. Business and Properties - Regulations.

In addition, claims have been made against certain energy companies alleging that greenhouse gas emissions from oil and 
natural gas operations constitute a public nuisance under federal and/or state common law. As a result, private individuals or 
other entities may make claims against us for alleged personal injury, property damage, or other potential liabilities. While our 
business is not a party to any such litigation, we could be named in actions making similar allegations. An unfavorable ruling in 
any such case could impact our operations and could have an adverse impact on our financial condition.

Moreover, there has been public discussion that climate change may be associated with extreme weather conditions such as 
more intense hurricanes, thunderstorms, tornadoes and snow or ice storms, as well as rising sea levels. Another possible 
consequence of climate change is increased volatility in seasonal temperatures. Some studies indicate that climate change could 
cause some areas to experience temperatures substantially hotter or colder than their historical averages. Extreme weather 
conditions can interfere with our production and increase our costs and damage resulting from extreme weather may not be 
fully insured. 

Our Eastern Mediterranean discoveries bear certain geopolitical, regulatory, financial and technical challenges that could 
adversely impact our ability to monetize these natural gas assets. 

We have entered into and are currently negotiating various long-term GSPAs for our Eastern Mediterranean natural gas assets. 
Some of these agreements would require the export of natural gas from either Israel or Cyprus to other countries in the region, 
such as Egypt and Jordan. These agreements are subject to a variety of risks, including geopolitical, regulatory, financial and 
other uncertainties. War, political violence, civil unrest or lack of intergovernmental cooperation could affect both our and our 
counterparties’ abilities to cooperate and to perform under these agreements, and could potentially lead to a breach or 
termination of such agreements. In addition, economic conditions or financial duress of our counterparties could jeopardize 
their ability to fulfill their payment obligations under these contracts.  Furthermore, if material disruptions occur, including 
events or circumstances constituting force majeure under contract provisions, such that they inhibit us or our counterparties 
from performing under these GSPAs, or our counterparties are unable to pay us for a sustained period of time, we could incur 
significant financial losses. While the State of Israel continues to maintain its ability to generate electricity via coal-fired power 
plants, as they transition from coal-fired power plants to natural gas-fired power plants, they become more dependent on us and 
our partners for their source of natural gas supply. Any material disruption in our ability to deliver natural gas to the State of 
Israel could have a material impact on our expected profitability, financial performance and reputation.

We are subject to certain regulatory provisions under the Framework, as adopted by the Government of Israel, including a 
requirement to reduce our ownership in the Tamar and Dalit fields to 25% by the end of 2021. We recently signed a definitive 
agreement to divest a 7.5% working interest in each of the fields to Tamar Petroleum Ltd., closing of the transaction is subject 
to satisfactory conclusion of certain conditions, including Tamar Petroleum's debt financing. Upon closing, we will receive 
consideration of both cash and Tamar Petroleum Ltd. shares, approximating 70% and 30%, respectively, of the transaction 
value, which will fluctuate based on market conditions. In accordance with the Framework, we must divest Tamar Petroleum 
Ltd. shares received by the end of 2021. In addition, changes in Israel's fiscal and/or regulatory regimes or energy policies 
occurring as a result of government policy on natural gas development and/or exports could delay or reduce the profitability of 
our Tamar and/or Leviathan development projects, and/or render future exploration and development projects uneconomic. 

Development of our Eastern Mediterranean natural gas assets requires substantial investment and will take several years to 
complete. Our partners must be able to fund their share of investment costs through the development cycle, through cash flow 
from operations, external credit facilities, or other sources, including financing arrangements. If our project partners' cash flows 
or ability to maintain adequate financing are negatively impacted through similar risks factors described herein, the 
development of a project could be delayed and the timing and receipt of planned cash flows and expected profitability could be 
negatively impacted.

40

Table of Contents
Index to Financial Statements

Due to the scale of our Leviathan (Israel) and Aphrodite (Cyprus) discoveries, realization of their full economic value depends 
on our ability to execute successful phased, development scenarios, the failure or delay of which could reduce our future 
growth and have negative effects on our future operating results. Offshore projects of this magnitude entail significant technical 
complexities including subsea tiebacks to a FPSO or production platform, pressure maintenance systems, gas re-injection 
systems, onshore receiving terminals, or other specialized infrastructure. In addition, we depend on third-party technology and 
service providers and other supply chain participants for these complex projects. Delays and differences between estimated and 
actual timing of critical events related to these projects could have a material adverse effect on our results of operations. 

Concentration of capital in, and production and cash flows from, certain operations may increase our exposure to risks 
enumerated herein.

A significant portion of our production and revenues is highly concentrated and is generated from a limited number of 
conventional deepwater wells. These wells, located in the Gulf of Mexico, offshore Israel and offshore Equatorial Guinea, 
contributed approximately 33% of our 2017 total consolidated revenues and 34% of our 2017 total consolidated sales volumes. 
In addition, with the recording of reserves associated with the initial development of the Leviathan field, we now have a major 
concentration of reserves offshore Israel, with approximately 47% of our year-end 2017 proved reserves attributable to this 
area. These fields are also capital and resource-intensive. 

Although we carry contingent business interruption for these producing assets, as well as other insurance, the insurance may be 
insufficient to cover all of risks including, a disruption to downstream operations impacting the processing, marketing and 
distribution of our production, such as from an accident, natural disaster, government intervention or other event, would have a 
significant impact on our production profile, cash flows, profitability, and overall business plan. 

We also have significant concentrations of capital and production in unconventional basins including the DJ Basin, Delaware 
Basin and Eagle Ford Shale, and we expect to invest approximately 65%, of our total capital investment program to 
development activities in these areas in 2018. Restrictions in land access, rapid changes in drilling and completion technology, 
significant increases in drilling and completion costs, lack of availability of downstream services, changes in regulations and 
other risks impacting these areas, as enumerated in certain risk factors described herein, can have immediate, significant 
negative impacts on our production, cash flows, profitability and financial position.

A cyber incident could result in information theft, data corruption, operational disruption and/or financial loss. 

We depend on digital technology, including information systems and related infrastructure as well as cloud applications and 
services, to process and record financial and operating data, communicate with our employees and business partners, analyze 
seismic and drilling information, estimate quantities of oil and gas reserves as well as other activities related to our business. 
Our business partners, including vendors, service providers, purchasers of our production, and financial institutions, are also 
dependent on digital technology. The technologies needed to conduct oil and gas exploration and development activities in 
deepwater, ultra-deepwater and shale, as well as technologies supporting midstream operations and global competition for oil 
and gas resources make certain information the target of theft or misappropriation.

As dependence on digital technologies has increased, cyber incidents, including deliberate attacks or unintentional events, also 
has increased. A cyber attack could include gaining unauthorized access to digital systems for purposes of misappropriating 
assets or sensitive information, corrupting data, or causing operational disruption, or result in denial-of-service on websites. 
SCADA-based systems are potentially vulnerable to targeted cyber attacks due to their critical role in operations.

Our technologies, systems, networks, and those of our business partners may become the target of cyber attacks or information 
security breaches that could result in the unauthorized release, gathering, monitoring, misuse, loss or destruction of proprietary 
and other information, or other disruption of our business operations. In addition, certain cyber incidents, such as surveillance, 
may remain undetected for an extended period.

Our implementation of various controls and processes to monitor and mitigate security threats and to increase security for our 
information, facilities and infrastructure is costly and labor intensive. Moreover, there can be no assurance that such measures 
will be sufficient to prevent security breaches from occurring. As cyber threats continue to evolve, we may be required to 
expend significant additional resources to continue to modify or enhance our protective measures or to investigate and 
remediate any information security vulnerabilities.

Our operations may be adversely affected by violent acts such as from civil disturbances, terrorist acts, regime changes, 
cross-border violence, war, piracy, or other conflicts that may occur in regions that encompass our operations.

41

Table of Contents
Index to Financial Statements

Certain regions, such as the Middle East and Africa, continue to experience varying degrees of political instability, public 
protests and terrorist attacks. We operate in regions of the world that have experienced such incidents or are in close proximity 
to areas where violence has occurred. Terrorist attacks and the threat of terrorist attacks, whether domestic or foreign, as well as 
military or other actions taken in response to these acts, could cause instability in the global financial and energy markets. 
Continued or escalated civil and political unrest and acts of terrorism in the regions in which we operate could result in 
curtailment of our operations. In the event that regions in which we operate experience civil or political unrest or acts of 
terrorism, especially in areas where such unrest leads to regime change, our operations in such regions could be materially 
impaired.  

We monitor the economic and political environments of the countries in which we operate. However, we are unable to predict 
the occurrence of disturbances such as those noted above. In addition, we have limited ability to mitigate their impact. 

Civil disturbances, terrorist acts, regime changes, war, or conflicts, or the threats thereof, could have the following results, 
among others: 

• 

• 

• 
• 
• 
• 
• 
• 
• 

• 
• 
• 

• 

increased volatility in global crude oil, natural gas and NGL prices which could negatively impact the global economy, 
resulting in slower economic growth rates, which could reduce demand for our products;
negative impact on the global crude oil supply if infrastructure or transportation are disrupted, leading to further 
commodity price volatility; 
difficulty in attracting and retaining qualified personnel to work in areas with potential for conflict;
inability of our personnel or supplies to enter or exit the countries where we are conducting operations;
disruption of our operations due to evacuation of personnel;
inability to deliver our production due to disruption or closing of transportation routes;
reduced ability to export our production due to efforts of countries to conserve domestic resources;
damage to or destruction of our wells, production facilities, receiving terminals or other operating assets;
damage to or destruction of property belonging to our natural gas purchasers leading to interruption of natural gas 
deliveries, claims of force majeure, and/or termination of natural gas sales contracts, resulting in a reduction in our 
revenues;
inability of our service and equipment providers to deliver items necessary for us to conduct our operations;
lack of availability of drilling rigs, oilfield equipment or services if third party providers decide to exit the region;
shutdown of a financial system, communications network, or power grid causing a disruption to our business 
activities; and
capital market reassessment of risk and reduction of available capital making it more difficult for us and our partners 
to obtain financing for potential development projects.

Loss of property and/or interruption of our business plans resulting from civil unrest could have a significant negative impact 
on our earnings and cash flow. In addition, we may not have enough insurance to cover any loss of property or other claims 
resulting from these risks. 

Exploration, development and production activities carry inherent risk.  These activities, as well as natural disasters or 
adverse weather conditions, could result in liability exposure or the loss of production and revenues.

Our crude oil and natural gas operations are subject to hazards and risks inherent in the drilling, production and transportation 
of crude oil, natural gas and NGLs, including:

pipeline ruptures and spills;
fires, explosions, blowouts and well cratering;
equipment malfunctions and/or mechanical failure on high-volume, high-impact wells;

• 
• 
• 
•  malfunctions of, or damage to, gathering, processing, compression and transportation facilities and equipment and 

• 
• 
• 

• 
• 

other facilities and equipment utilized in support of our crude oil, natural gas and NGL operations;
leaks or spills occurring during the transfer of hydrocarbons from an FPSO to an oil tanker;
loss of product occurring as a result of transfer to a rail car or train derailments;
formations with abnormal pressures and basin subsidence which could result in leakage or loss of access to 
hydrocarbons;
release of pollutants; and
spills, leaks or discharges of fluids used in or produced in the course of operations, especially those that reach surface 
water or groundwater.

Some of these risks or hazards could materially and adversely affect our revenues and expenses by reducing or shutting in 
production from wells, loss of equipment or otherwise negatively impacting the projected economic performance of our 
projects. In addition, our ability to deliver product pursuant to long-term supply contracts could be negatively impacted 
resulting in additional financial exposure in the event we cannot fully deliver the contract quantities.

42

Table of Contents
Index to Financial Statements

Any of these risks or hazards can result in injuries and/or deaths of employees, supplier personnel or other individuals, loss of 
hydrocarbons, environmental pollution and other damage to our properties or the properties of others, regulatory investigations 
and administrative, civil and criminal penalties or restricted access to our properties.

In addition, our operations and financial results could be significantly impacted by adverse weather conditions and natural 
disasters in the areas we operate including:

• 

hurricanes, tropical storms, cyclones, windstorms, or “superstorms” which could affect our operations in areas such as 
Texas and the Gulf of Mexico; 

•  winter storms and snow which could affect our operations in the DJ Basin;
• 

extremely high temperatures, which could affect third party gathering and processing facilities in the DJ Basin and 
Texas;
severe droughts resulting in new restrictions on water usage in the DJ Basin and Texas;
harsh weather and rough seas offshore certain international locations, which could limit exploration activities; and
other natural disasters.

• 
• 
• 

Any of these can result in loss of hydrocarbons, environmental pollution and other damage to our properties or the properties of 
others, or restricted access to our properties.

Development drilling may not result in commercially productive quantities of crude oil and natural gas reserves from 
unconventional or conventional resources.

We depend on development projects to provide sustained cash flows after investment and attractive financial returns. However, 
development drilling is not always successful and the profitability of development projects may change over time.

In new development areas, available data may not allow us to completely know the extent of the reservoir or the best locations 
for drilling development wells. Therefore, a development well we drill may be a dry hole or result in noncommercial quantities 
of hydrocarbons.

We are planning to invest significant amounts of capital to continue development of our US onshore unconventional resources 
as well as to progress the development of the Leviathan field project. In unconventional basins, development is highly 
dependent on the use of new technologies to drive cost efficiencies in drilling and completion as well as on the availability of 
third party infrastructure to provide flow assurance and transportation of production to end markets.

Development of offshore resources is capital and resource-intensive and may require several years to complete. In order to 
timely advance significant offshore discoveries, we may progress multiple development concepts simultaneously, with the 
realization that only one concept may ultimately be approved or be economically feasible. This approach may result in our 
writing off costs related to certain development concepts that must be eliminated from further consideration once a final 
development option has been determined. 

Even if development drilling is successful and we find commercial quantities of reserves, we may encounter difficulties or 
delays in completing development wells. For example, frontier areas or less developed onshore areas may not have adequate 
infrastructure for gathering, processing or transportation, and production may be delayed until such infrastructure is 
constructed.

Exploratory drilling, either within existing or new ventures in countries which have no history of hydrocarbon sector 
investment, subjects us to risks and may not result in the discovery of commercially productive reservoirs. 

Exploratory drilling requires significant capital investment and does not always result in commercial quantities of hydrocarbons 
or new development projects. In addition, exploratory drilling activities may be curtailed, delayed or canceled, or development 
plans may change, resulting in significant exploration expense, as a result of a variety of factors, including unexpected drilling 
conditions and pressure or other irregularities in formations. Furthermore, remote locations may make it more difficult and 
time-consuming to transport personnel, equipment and supplies, and we may face more difficult environments, such as oil 
sands, deepwater, or ultra-deepwater in our efforts to seek new reserves, and may need to develop or invest in new 
technologies. These operating environments, and potential for harsh weather, increase cost as well as drilling risk.

Exploratory dry holes can occur because seismic data and other technologies we use to determine potential exploratory drilling 
locations do not allow us to know conclusively prior to drilling a well that crude oil or natural gas is present or may be 
produced economically. In addition, a well may be successful in locating hydrocarbons, but we and our partners may decide not 
to develop the prospect due to other considerations. 

43

Table of Contents
Index to Financial Statements

In addition, for certain capital-intensive offshore projects, it may take several years to evaluate the future potential of an 
exploratory well and make a determination of its economic viability, resulting in delays in cash flows from production start-up 
and a lower return on our investment.

We hold working interests in certain areas, including offshore areas of Cyprus, Cameroon, Gabon and Newfoundland (Canada) 
where there is minimal or no crude oil, natural gas or NGL production, and in certain cases, limited infrastructure. If 
commercial quantities of hydrocarbons are discovered, societies with minimal or no current production must begin to address 
such topics as sector regulation and distribution of government proceeds from hydrocarbon sales, the results of which could 
have a negative impact on our business. We may not be able to compensate for or fully mitigate these risks. See Item 8. 
Financial Statements and Supplementary Data – Note 6.  Capitalized Exploratory Well Costs and Undeveloped Leasehold 
Costs.

Our operations require us to comply with a number of US and international laws and regulations, violations of which could 
result in substantial fines or sanctions and/or impair our ability to do business. 

Our operations require us to comply with complex and frequently-changing US and international laws and regulations, such as 
those involving anti-corruption, competition and antitrust, anti-boycott, anti-money laundering, import-export control, 
marketing, environmental and/or taxation.

For example, the US Foreign Corrupt Practices Act (FCPA) and similar laws and regulations enacted or promulgated by 
countries pursuant to the 1997 Organisation for Economic Cooperation and Development Anti-Bribery Convention generally 
prohibit improper payments to foreign officials for the purpose of obtaining or keeping business. We conduct some of our 
operations in developing countries that have relatively underdeveloped legal and regulatory systems compared to more 
developed countries. These countries generally are perceived as presenting an increased risk of corruption. Additionally, certain 
of our operations involve the use of agents and other intermediaries whose conduct and actions could be imputed to us by anti-
corruption enforcement authorities. Violations of the FCPA or other anti-corruption laws could subject us to substantial fines or 
sanctions and impair our ability to do business.  

The import/export of equipment and supplies necessary for oil and gas exploration and development activities, as well as the 
export of crude oil, natural gas, and liquids production are regulated by the import/export laws of the US and other countries in 
which we operate. In the US, certain items required for oil and gas development activities may be considered “dual-use”, 
having both commercial and military applications and, therefore, may be subject to specific import or export restrictions. In 
addition, the US government imposes economic and trade sanctions against certain foreign countries and regimes. The 
sanctions are based on US foreign policy and national security goals and may change over time.

Mergers of businesses often require the approval of certain government or regulatory agencies and such approval could contain 
terms, conditions, or restrictions that would be detrimental to our business after a merger. US antitrust laws require waiting 
periods and even after completion of a merger, governmental authorities could seek to block or challenge a merger as they 
deem necessary or desirable in the public interest. We have merged with or acquired other companies in the past. Prevention of 
a merger by antitrust laws could impair our ability to do business. Furthermore, mergers and acquisitions expose us to potential 
lawsuits or other obligations not yet anticipated at time of merger or acquisition. Such liabilities and obligations could hinder 
our ability to fully benefit from the acquired business or assets and negatively impact our financial performance.  

As a developer, owner and operator of crude oil and natural gas properties, we are subject to various laws and regulations 
relating to the discharge of materials into, and the protection of, the environment. Failure to comply with these laws and 
regulations may result in the assessment of administrative, civil and criminal penalties, imposition of cleanup and site 
restoration costs and liens, the suspension or revocation of necessary permits, licenses and authorizations, the requirement that 
additional pollution controls be installed and, in some instances, issuance of orders or injunctions limiting or requiring 
discontinuation of certain operations. See We are subject to increasing governmental regulations and environmental 
requirements that may cause us to incur substantial incremental costs, below, and Item 8. Financial Statements and 
Supplementary Data – Note 17.  Commitments and Contingencies. 

Federal, state and local hydraulic fracturing and water disposal legislation and regulation could increase our costs or 
restrict our ability to produce crude oil, natural gas and NGLs economically and in commercial quantities.

While hydraulic fracturing has been utilized in oil and gas development for decades, certain parties have called for further 
study of the technique's alleged environmental and health effects, for additional regulation of the technique and, in some cases, 
for a moratorium or ban on the use of hydraulic fracturing. Because of elevated public sensitivity around the topic, federal, state 
and local governments are continually conducting studies, evaluating their regulatory programs and considering additional 
requirements on and regulation of hydraulic fracturing practices.  

At the national level, proposals have been introduced from time to time in the US Congress that, if implemented, would subject 
hydraulic fracturing to further regulation, thereby limiting its use or increasing its cost. 

44

Table of Contents
Index to Financial Statements

Federal agencies addressing hydraulic fracturing under existing authorities include the EPA, which has issued technical reports 
and developed various rules and guidelines regarding hydraulic fracturing activities, and the BLM, under the US Department of 
the Interior, which has issued final rules impacting hydraulic fracturing on federal and Indian lands. Some of these rules are 
subject to pending challenges and, on March 28, 2017, an executive order was signed directing the EPA and the BLM to review 
their rules and, if appropriate, to initiate rulemaking to rescind or revise them consistent with the stated policy of promoting 
clean and safe development of the nation’s energy resources, while at the same time avoiding regulatory burdens that 
unnecessarily encumber energy production.  Accordingly, the EPA and the BLM have taken actions to delay or rescind certain 
requirements related to hydraulic fracturing activities. See Items 1. and 2. Business and Properties - Hydraulic Fracturing.

Each of the states, as well as certain localities, where we operate have adopted or may adopt regulations on drilling activities in 
general or hydraulic fracturing in particular that could restrict or prohibit hydraulic fracturing in certain circumstances, impose 
more stringent operating standards and/or require the disclosure of the composition of hydraulic fracturing fluids. For example, 
a number of local communities in Colorado have attempted to increase regulatory requirements on crude oil and natural gas 
development. In addition, some state regulatory agencies have modified their regulations to account for potential 
induced seismicity with regard to the operation of injection wells used for waste disposal.

We are dependent on the use of hydraulic fracturing practices to produce commercial quantities of crude oil and natural gas, 
particularly from wells in our US onshore basins. Additional federal, state or local restrictions on hydraulic fracturing, water 
disposal or other drilling activities that may be imposed in areas where we conduct business, such as US onshore, could 
significantly increase our operating, capital and compliance costs as well as delay or halt our ability to develop crude oil, 
natural gas and NGL reserves. See Items 1. and 2. Business and Properties – Regulations and – Hydraulic Fracturing.

The marketability of our production is dependent upon transportation and processing facilities over which we may have no 
direct control.

The marketability of our production from our US onshore areas and Gulf of Mexico depends in part upon the availability, 
proximity and capacity of pipelines, natural gas gathering systems, rail service, and processing facilities. We deliver crude oil, 
natural gas and NGLs produced from these areas through gathering systems and pipelines, the majority of which we do not 
own. 

In Israel, we rely on a state-owned pipeline and transportation system to deliver our production to customers and end users. 
Offshore Equatorial Guinea, our natural gas production is delivered to onshore processing and storage facilities operated by our 
partner, and the resulting products, as well as our crude oil production from Aseng and Alen, are lifted to tankers owned by 
third-parties.

Third-party systems and facilities may not be available to us in the future at a price that is acceptable to us. In addition, the lack 
of availability of, or capacity on, third-party systems and facilities could reduce the price offered for our production or result in 
the shut-in of producing wells or the delay or discontinuance of development plans for properties. Even where we have some 
contractual control over the transportation of our production through firm transportation arrangements, third-party systems and 
facilities may be temporarily unavailable due to market conditions or mechanical reliability or other reasons, including adverse 
weather conditions.

Any significant change in market factors or other conditions affecting these infrastructure systems and facilities, as well as any 
delays in constructing new infrastructure systems and facilities, could delay or curtail production, thereby harming our business 
and, in turn, our results of operations, cash flows, and financial condition.

Our ability to produce crude oil, natural gas and NGLs economically and in commercial quantities could be impaired if we 
are unable to acquire adequate supplies of water for our drilling operations or are unable to dispose of or recycle the water 
we use economically and in an environmentally safe manner.

Drilling and development activities require the use of water and results in the production of waste water. For example, the 
hydraulic fracturing process, which we employ to produce commercial quantities of crude oil, natural gas and NGLs from 
many reservoirs, requires the use and disposal of significant quantities of water. In certain regions, there may be insufficient 
local capacity to provide a source of water for drilling activities. In those cases, water must be obtained from other sources and 
transported to the drilling site, adding to the development cost. Waste water from oil and gas operations often is disposed of via 
underground injection. Some studies have linked earthquakes or induced seismicity in certain areas to underground injection, 
which is leading to increased public scrutiny of injection safety. 

The development of new environmental initiatives or regulations related to acquisition, withdrawal, storage and use of surface 
water or groundwater, or treatment and discharge of water waste, may limit our ability to use techniques such as hydraulic 
fracturing, increase our development and operating costs and cause delays, interruptions or termination of our operations, the 
extent of which cannot be predicted, all of which could have an adverse effect on our operations and financial condition. See 
Items 1. and 2. Business and Properties – Hydraulic Fracturing.

45

Table of Contents
Index to Financial Statements

Failure to adequately fund continued capital expenditures could adversely affect our properties.

Our exploration, development, and acquisition activities require capital expenditures to achieve production and cash flows. In 
particular, major offshore projects have a multi-year long development cycle time, which means that development spending 
occurs for several years before the project begins producing hydrocarbons and generating cash flows. As examples, assets and 
infrastructure for export of natural gas from Leviathan require a multi-billion dollar investment prior to production startup. 
Furthermore, while the majority of our assets are held by production, certain of our assets, such as our Eagle Ford Shale and 
Delaware Basin properties, are held through continuous development obligations. Therefore, we are contractually obligated to 
fund a level of development activity in these areas and failure to meet these obligations may result in the loss of a lease.   

Historically, we have funded our capital expenditures through a combination of cash flows from operations, our unsecured 
revolving credit facility (Revolving Credit Facility), debt and equity issuances, and occasional sales of assets. Future cash flows 
from operations are subject to a number of variables, such as the level of production from existing wells, commodity prices, 
and our success in finding, developing and producing new reserves. 

For 2018, our capital investment program is flexible to address potential commodity price changes. If commodity prices decline  
for an extended period of time, we will evaluate our level of capital spending and likely reduce our investment program. As a 
result, we will have less ability to replace our reserves through drilling operations and may elect to forfeit our ownership 
interests or rights to participate in some properties, resulting in lower production over time as compared with prior years. See 
Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations – Operating Outlook – 2018 
Capital Investment Program.

A negative shift in investor sentiment of the oil and gas industry could adversely affect our ability to raise equity 
and debt capital.

Certain segments of the investor community have recently developed negative sentiment towards investing in our 
industry. Recent equity returns in the sector versus other industry sectors have led to lower oil and gas 
representation in certain key equity market indices. Some investors, including certain pension funds, university 
endowments and family foundations, have stated policies to disinvest in the oil and gas sector based on their social 
and environment considerations. Certain other stakeholders have also pressured commercial and investment banks 
to stop funding oil and gas projects.  

Such developments could result in downward pressure on the stock prices of oil and gas companies, including ours.  
This may also potentially result in a reduction of available capital funding for potential development projects 
impacting our future financial results.

Indebtedness may limit our liquidity and financial flexibility.

At December 31, 2017, we had $6.8 billion of consolidated debt, and indebtedness represented 39% of our total book 
capitalization (sum of debt plus shareholders' equity).

Our indebtedness affects our operations in several ways, including the following:

• 

a portion of our cash flows from operating activities must be used to service our indebtedness and is not available for 
other purposes; 

•  we may be at a competitive disadvantage as compared to similar companies that have less debt;
• 

a covenant contained in our Credit Agreement provides that our total debt to capitalization ratio (as defined in the 
Credit Agreement) will not exceed 65% at any time, which may make additional borrowings more expensive, thereby 
affecting our flexibility in planning for, and reacting to, changes in the economy and our industry; 
additional future financing for working capital, capital expenditures, acquisitions, general corporate or other purposes 
may have higher costs and more restrictive covenants;
changes in our debt credit ratings may negatively affect the cost, terms, conditions and/or availability of future 
financing, and lower ratings will increase the interest rate and fees we pay on our Revolving Credit Facility; and

• 

• 

•  we may be more vulnerable to general adverse economic and industry conditions.

We may incur additional debt in order to fund our exploration, development and acquisition activities. A higher level of 
indebtedness increases the risk that our financial flexibility may deteriorate. Our ability to meet our debt obligations and service 
our debt depends on future performance. General economic conditions, commodity prices, and financial, business and other 
factors will affect our operations and our future performance. Many of these factors are beyond our control and we may not be 
able to generate sufficient cash flow to pay the interest on our debt, and future working capital, borrowings and equity 
financing may not be available to pay or refinance such debt. See Item 8. Financial Statements and Supplementary Data – Note 
10.  Long-Term Debt. 

46

Table of Contents
Index to Financial Statements

A downgrade or other negative action with respect to our credit rating could negatively impact our business and financial 
condition.

A downgrade or other negative rating action could affect our requirements to post collateral as financial assurance of 
performance under certain contractual arrangements, such as pipeline transportation contracts, crude oil and natural gas sales 
contracts, work commitments and certain abandonment obligations, and potentially subject us to additional bonding and other 
assurance requirements with respect to our Gulf of Mexico assets. A lowering of our credit rating may negatively affect the 
cost, terms, conditions and availability of future financing.

We face significant competition and many of our competitors have resources in excess of our available resources.

We operate in highly competitive areas of crude oil and natural gas exploration, development, acquisition and production. We 
face intense competition from: 

large multi-national, integrated oil and gas companies;
• 
• 
state-controlled national oil companies;
•  US independent oil and gas companies;
•  US onshore midstream companies;
• 
• 

service companies engaging in exploration and production activities; and
private investing in oil and gas equity funds.

We face competition in a number of areas such as:

seeking to acquire desirable producing properties or new leases for future exploration;
acquiring or increasing access to gathering, processing and transportation services and capacity;

• 
• 
•  marketing our crude oil, natural gas and NGL production;
• 
• 

seeking to acquire the equipment and expertise necessary to operate and develop properties; and
attracting and retaining employees with certain skills.

Many of our competitors have financial and other resources substantially in excess of those available to us. Such companies 
may be able to pay more for seismic information and lease rights on crude oil and natural gas properties and exploratory 
prospects and to define, evaluate, bid for and purchase a greater number of properties and prospects than our financial or 
human resources permit. This highly competitive environment could have an adverse impact on our business.

Estimates of crude oil, natural gas and NGL reserves are not precise. 

Reservoir engineering is a subjective process of estimating underground accumulations of crude oil, natural gas and NGLs that 
cannot be measured in an exact manner, and there are numerous uncertainties inherent in estimating reserves quantities and 
their value, including factors that are beyond our control. 

In accordance with the SEC's rules for oil and gas reserves reporting, our reserves estimates are based on 12-month average 
commodity prices; therefore, reserves quantities will change when actual prices increase or decrease. As estimated production, 
development and abandonment costs are based on year-end economic conditions, reserves quantities will also change when 
these costs increase or decrease.

Reserves estimates depend on a number of factors and assumptions that may vary considerably from actual results, including:

historical production from the area compared with production from other areas;
the assumed effects of regulations by governmental agencies, including the SEC;
assumptions concerning future crude oil, natural gas, and NGL prices;
anticipated development cycle time;
future development costs; 
future operating and abandonment costs;
impacts of cost recovery provisions in contracts with foreign governments;
severance and excise taxes; and

• 
• 
• 
• 
• 
• 
• 
• 
•  workover and remedial costs.

For these reasons, estimates of the economically recoverable quantities of crude oil, natural gas and NGLs attributable to any 
particular group of properties, classifications of those reserves based on risk of recovery, and estimates of the future net cash 
flows expected from them prepared by different petroleum engineers, or by the same petroleum engineers but at different times, 
may vary substantially. Estimation of crude oil, natural gas and NGL reserves in emerging areas or areas with limited historical 
production is inherently more difficult, and we may have less experience in such areas. Accordingly, reserves estimates may be 
subject to positive or negative revisions, and actual production, revenues and expenditures with respect to our reserves likely 
will vary, possibly materially, from estimates. Any such negative revisions could result in an asset impairment charge.

47

Table of Contents
Index to Financial Statements

Additionally, some of our reserves estimates are calculated using volumetric analysis, which involves estimating the volume of 
a reservoir based on the net feet of pay of the structure and an estimation of the area covered by the structure. Reserves 
estimates using volumetric analysis are less reliable than estimates based on a lengthy production history. 

In addition, realization or recognition of PUDs will depend on our development schedule and plans. A change in future 
development plans for PUDs could cause the discontinuation of the classification of these reserves as proved. See Items 1. and 
2. Business and Properties – Proved Reserves Disclosures.

We operate in a litigious environment. 

Some of the jurisdictions within which we operate have proven to be litigious environments. Oil and gas companies, such as us, 
can be involved in various legal proceedings, such as title, royalty, or contractual disputes, in the ordinary course of business. 
For example, in certain states, oil and gas companies are often the target of “legacy lawsuits,” by which a landowner claims that 
oil and gas operations, often performed many years ago and by another operator, caused pollution or contamination of a 
property. Various properties we have owned over the past decades potentially expose us to “legacy lawsuit” claims.  Similarly, 
neighboring landowners may allege that current operations cause contamination or create a nuisance.

Because we maintain a diversified portfolio of assets that includes both US and international projects, the complexity and types 
of legal procedures with which we may become involved may vary, and we could incur significant legal and support expenses 
in different jurisdictions. For instance, we historically have had to address certain fiscal, antitrust and other regulatory 
challenges in Israel, including a current class action lawsuit filed by petitioners alleging we and our partners in Tamar violated 
antitrust laws through the monopolistic pricing of natural gas to the citizens of Israel. Legal proceedings such as this could 
result in a substantial liability and/or negative publicity about us and adversely affect the price of our common stock. In 
addition, legal proceedings distract management and other personnel from their primary responsibilities. These proceedings are 
subject to the uncertainties inherent in any litigation. We will defend ourselves vigorously in all such matters. However, if we 
are not able to successfully defend ourselves, there could be a delay or even halt in our exploration, development or production 
activities or other business plans, resulting in a reduction in reserves, loss of production and reduced cash flows. 

One of our subsidiaries acts as the general partner of a publicly traded master limited partnership, Noble Midstream 
Partners, which may involve a greater exposure to legal liability than our historic business operations.

One of our subsidiaries acts as the general partner of Noble Midstream Partners, a publicly traded master limited partnership. 
Our control of the general partner of Noble Midstream Partners may increase the possibility that we could be subject to claims 
of breach of fiduciary duties, including claims of conflicts of interest, related to Noble Midstream Partners. Any liability 
resulting from such claims could have a material adverse effect on our future business, financial condition, results of operations 
and cash flows.

We may be subject to risks in connection with acquisition and divestiture activities.  

As part of our business strategy, we have made, and will likely continue to make, acquisitions of oil and gas properties and/or 
entities that own them. Furthermore, if we are unable to make attractive acquisitions, our future growth could be limited. 
Moreover, even if we do make acquisitions, they may not result in an increase in our cash flows from operations or otherwise 
result in the benefits anticipated due to various risks, including, but not limited to:

• 
• 

• 
• 
• 

incorrect estimates or assumptions about reserves, exploration potential or potential drilling locations;
incorrect assumptions regarding future revenues, including future commodity prices and differentials, or regarding 
future development and operating costs;
incorrect assumptions regarding potential synergies and the overall costs of equity or debt;
difficulties in integrating the operations, technologies, products and personnel of the acquired assets or business; and
unknown and unforeseen liabilities or other issues related to any acquisition for which contractual protections prove 
inadequate, including environmental liabilities and title defects.

The acquisition of a property or business requires management to make complex judgments and assessments, and the accuracy 
of the assessments is inherently uncertain. In connection with these assessments, we perform a review of the subject properties 
that we believe to be consistent with industry practices. Our review will not reveal all existing or potential problems, nor will it 
permit us to become sufficiently familiar with the properties to fully assess their deficiencies and capabilities.

We also maintain an ongoing portfolio management program to ensure our company is well-positioned with assets that offer 
growth at financially attractive investment options. Therefore, we may periodically divest certain material assets which may 
help to generate organizational and operational efficiencies as well as cash for use in our capital investment program or to repay 
outstanding debt. 

We strive to obtain the most attractive prices for our assets; however, various factors can materially affect our ability to dispose 
of assets on terms acceptable to us. Such factors may include:

48

Table of Contents
Index to Financial Statements

current commodity prices;
laws and regulations impacting oil and gas operations in the areas where the assets are located;

• 
• 
•  willingness of the purchaser to assume certain liabilities such as asset retirement obligations;
• 
• 

our willingness to indemnify buyers for certain matters; and
delays in closing. 

Inability to achieve a desired price for the assets, or underestimation of amounts of retained liabilities or indemnification 
obligations, can result in a reduction of cash proceeds, a loss on sale due to an excess of the asset's net book value over 
proceeds, or liabilities which must be settled in the future at amounts that are higher than we anticipated.  In addition, although 
we may successfully divest oil and gas assets, we may retain certain related contracts. For example, although we sold our 
Marcellus Shale upstream properties in 2017, we retained significant obligations under firm transportation contracts. Our 
inability to fully commercialize these contracts and reduce the associated financial commitments could result in a decrease in 
cash flows from operations. In addition, we may be required to recognize losses in accordance with exit or disposal activities. 
See Item 7. Management's Discussion of Financial Condition and Results of Operations – Liquidity and Capital Resources – 
Contractual Obligations.

An uneconomic or unsuccessful acquisition or divestiture effort may divert management’s attention and our financial resources 
away from existing operations, which could have a material adverse effect on our financial condition and results of operations.

We are exposed to counterparty credit risk as a result of our receivables, hedging transactions and cash investments.

We are exposed to risk of financial loss from joint venture and other receivables. We are the operator on a majority of our joint 
venture development projects, including Leviathan. As operator of the joint ventures, we pay joint venture expenses and make 
cash calls on our nonoperating partners for their respective shares of joint venture costs. These projects are capital cost 
intensive and, in some cases, a nonoperating partner may experience a delay in obtaining financing for its share of the joint 
venture costs or have liquidity problems resulting in slow payment of joint venture costs that can result in potential delays in 
our development projects.

In addition, some of our joint venture partners are not as creditworthy as we are and may experience credit rating downgrades 
or liquidity problems that may hinder their ability to obtain financing. Counterparty liquidity problems could result in a delay in 
our receiving proceeds from reimbursement of joint venture costs. Nonperformance by a joint venture partner could result in 
significant financial losses.

Our hedging transactions expose us to risk of financial loss if a counterparty fails to perform under a derivative contract. 
During periods of falling commodity prices, our commodity derivative receivable positions increase, which increases our 
counterparty credit exposure. We also had approximately $675 million in cash and cash equivalents at December 31, 2017 
deposited with financial institutions, a majority of which was invested in money market funds and short-term deposits with 
major financial institutions. While we monitor the creditworthiness of the banks and financial institutions with which we invest 
and engage in hedging transactions, and maintain credit insurance, we are unable to predict sudden changes in solvency of the 
financial institutions and may be exposed to associated risks. 

If one or more of our joint venture partners, hedge counterparties and financial institutions were to experience a sudden 
deterioration in liquidity, it could impair their ability to perform under the terms of our contracts. We are unable to predict 
sudden changes in creditworthiness or ability of these parties to perform and could incur significant financial losses. 

Credit enhancements have been obtained from some parties in the form of parental guarantees, letters of credit or credit 
insurance; however, not all of our counterparty credit is protected through guarantees or credit support. In addition, we maintain 
credit insurance associated with specific purchasers. However, nonperformance by a hedge counterparty or financial institution 
could result in significant financial losses.

Commodity hedging transactions may limit our potential gains or fail to protect us from declines in commodity prices.

In order to reduce the impact of commodity price uncertainty and increase cash flow predictability relating to the marketing of 
our crude oil and natural gas, we enter into hedging arrangements with respect to a portion of our expected revenues. Our 
hedges, consisting of a series of derivative instrument contracts, are limited in duration, usually for periods of one to three 
years. While intended to reduce the effects of volatile crude oil and natural gas prices, such transactions may limit our potential 
gains if prices rise over the price established by the arrangements. Conversely, our hedging program may be inadequate to 
protect us from continuing and prolonged declines in the price of crude oil or natural gas.

Global commodity prices are volatile. Such volatility challenges our ability to forecast and, as a result, it may become more 
difficult to manage our hedging program. In trying to manage our exposure to commodity price risk, we may end up hedging 
too much or too little, depending upon how our crude oil or natural gas volumes and our production mix fluctuate in the future. 
Hedging transactions may also expose us to the risk of financial loss in certain circumstances, including instances in which: our 
production is less than expected; there is a widening of price basis differentials between delivery points for our production and 

49

Table of Contents
Index to Financial Statements

the delivery points assumed in the hedge arrangement; the counterparties to our futures contracts fail to perform under the 
contracts; or a sudden unexpected event materially impacts crude oil or natural gas prices.  See Item 8. Financial Statements 
and Supplementary Data – Note 8.  Derivative Instruments and Hedging Activities.

The insurance we carry is insufficient to cover all of the risks we face, which could result in significant financial exposure. 

Exploration for and production of crude oil and natural gas can be hazardous, involving natural disasters or other catastrophic 
events such as hurricanes, earthquakes, blowouts, well cratering, fire and explosion, loss of well control, pipeline disruptions, 
mishandling of fluids and chemicals, and possible underground migration of hydrocarbons and chemicals, any of which can 
result in damage to or destruction of wells or formations or production facilities, injury to persons, loss of life, or damage to 
property and the environment. Exploration and production activities are also subject to risk from political developments such as 
terrorist acts, piracy, civil disturbances, war, and expropriation or nationalization of assets, or other interruptions, such as cyber 
security breaches, which can cause loss of or damage to our property. 

Our insurance program and memberships in domestic and international dedicated oil spill and emergency response 
organizations may not minimize or fully protect us from losses resulting from damages to or the loss of physical assets or loss 
of human life, liability claims of third parties, and business interruption (loss of production) attributed to certain assets and 
including such occurrences as well blowouts and resulting oil spills. We do not have insurance protection against all the risks 
we face, because we choose not to insure certain risks, insurance is not available at a level that balances the cost of insurance 
and our desired rates of return, or actual losses may exceed coverage limits. 

We expect the future availability and cost of insurance to be impacted by such events as hurricanes, earthquakes, tsunami and 
other natural disasters. Impacts could include tighter underwriting standards; limitations on scope and amount of coverage; and 
higher premiums, and will depend, in part, on future changes in laws and regulations regarding exploration and production 
activities in the Gulf of Mexico and other areas in which we operate, including possible increases in liability caps for claims of 
damages from oil spills. We will continue to monitor for any legislative or regulatory changes related to offshore exploration 
and production and its potential impact on the insurance market and our overall risk profile, and adjust our risk and insurance 
program to provide protection, at a level that we can afford considering the cost of insurance and our desired rates of return, 
against disruption to our operations and cash flows.   

If an event, for example, a major offshore incident resulting in significant personal injury and/or environmental and physical 
damage, occurs that is not covered by insurance or not fully protected by insured limits, it could have a significant adverse 
impact on our financial condition, results of operations and cash flows. See Risk and Insurance Program, above.

Provisions in our Certificate of Incorporation and Delaware law may inhibit a takeover of us. 

Under our Certificate of Incorporation, our Board of Directors is authorized to issue shares of our common or preferred stock 
without approval of our shareholders. Issuance of these shares could make it more difficult to acquire us without the approval 
of our Board of Directors as more shares would have to be acquired to gain control. In addition, Delaware law imposes 
restrictions on mergers and other business combinations between us and any holder of 15% or more of our outstanding 
common stock. These provisions may deter hostile takeover attempts that could result in an acquisition of us that would have 
been financially beneficial to our shareholders. 

Item1B.   Unresolved Staff Comments

None.

Item 3.  Legal Proceedings

We are involved in various legal proceedings in the ordinary course of business. These proceedings are subject to the 
uncertainties inherent in any litigation. We are defending ourselves vigorously in all such matters and we believe that the 
ultimate disposition of such proceedings will not have a material adverse effect on our financial position, results of operations 
or cash flows. For discussion of material legal proceedings, see Item 8. Financial Statements and Supplementary Data – Note 
17.  Commitments and Contingencies. 

Item 4.  Mine Safety Disclosures

Not Applicable.

Item 5.  Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity 
Securities

Common Stock   Our common stock, $0.01 par value, is listed and traded on the NYSE under the symbol “NBL.” The 
declaration and payment of dividends will be determined on a quarterly basis and are at the discretion of our Board of Directors 

PART II

50

Table of Contents
Index to Financial Statements

and the amount thereof will depend on our results of operations, financial condition, contractual restrictions, cash requirements, 
future prospects and other factors deemed relevant by the Board of Directors.

Stock Prices and Dividends by Quarters   The high and low sales price per share of our common stock on the NYSE and 
quarterly dividends paid per share were as follows:

High

Low

Dividends Per Share

$

$

2016

First Quarter

Second Quarter

Third Quarter

Fourth Quarter
2017

First Quarter

Second Quarter

Third Quarter

Fourth Quarter

$

$

35.04

38.62

37.50

42.03

40.89

35.74

30.06

29.58

$

$

23.77

29.47

32.71

33.75

32.33

27.66

22.99

22.99

0.10

0.10

0.10

0.10

0.10

0.10

0.10

0.10

On January 30, 2018, our Board of Directors declared a quarterly cash dividend of $0.10 per common share. The dividend will 
be paid February 26, 2018, to shareholders of record on February 12, 2018. The amount of future dividends will be determined 
on a quarterly basis at the discretion of our Board of Directors and will depend on earnings, financial condition, capital 
requirements and other factors.

Transfer Agent and Registrar   The transfer agent and registrar for our common stock is Wells Fargo Bank, N.A., 1110 Centre 
Pointe Curve, Suite 101 Mendota Heights, MN 55120.

Stockholders’ Profile   Pursuant to the records of the transfer agent, as of February 9, 2018, the number of holders of record of 
our common stock was 561.

Stock Repurchases   The following table summarizes repurchases of our common stock occurring in fourth quarter 2017:

Period

10/1/2017 - 10/31/2017

11/1/2017 - 11/30/2017

12/1/2017 - 12/31/2017

Total

Total Number 
of
Shares 
Purchased (1)

Average
Price Paid
Per Share

Total Number of
Shares Purchased
as Part of Publicly
Announced Plans or
Programs

Approximate Dollar
Value of Shares that
May Yet Be
Purchased Under the
Plans or Programs

(in thousands)

390

$

85

20,173

20,648

$

28.33

28.30

25.68

25.74

—

—

—

—

—

—

—

—

(1)     Stock repurchases during the period related to stock received by us from employees for the payment of withholding taxes due on shares 

of restricted stock issued under our stock-based compensation plans.

51

 
 
 
 
Table of Contents
Index to Financial Statements

Stock Performance Graph   This graph shows our cumulative total shareholder return over the five-year period from December 
31, 2012 to December 31, 2017. The graph also shows the cumulative total returns for the same five-year period of the S&P 
500 Index and a peer group of companies. The cumulative total return of the common stock of our peer group of companies 
includes the cumulative total return of our common stock.

Our peer group includes a broad group of US onshore and global exploration and production companies which are further 
diversified by location and number of resource plays as well as level of integration within the crude oil and natural gas business 
cycle.  Our peer group consists of the following:

Anadarko Petroleum Corp.
Apache Corp.
Cabot Oil & Gas Corp.
Chesapeake Energy Corp.
Continental Resources, Inc.
Devon Energy Corp.
EOG Resources, Inc.

Hess Corp.
Marathon Oil Corp.
Murphy Oil Corp.
Noble Energy, Inc.
Pioneer Natural Resources Co.
Range Resources Corp.
Southwestern Energy Co.

The comparison assumes $100 was invested on December 31, 2012 in our common stock, in the S&P 500 Index and in our peer 
group of companies and assumes that all of the dividends were reinvested. In addition, the peer group investment is weighted 
based upon the market capitalization of each individual company within the peer group.

Year Ended December 31,
Noble Energy, Inc.
S&P 500
Peer Group

2013

2014

2015

2016

2017

$

135.07 $
132.39
131.72

95.06 $
150.51
113.35

67.16 $
152.59
70.13

78.54 $
170.84
101.33

60.93
208.14
90.55

Equity Compensation Plan Information  The information required by this item is incorporated herein by reference to the 2018 
Proxy Statement, which will be filed with the SEC not later than 120 days subsequent to December 31, 2017. 

52

Table of Contents
Index to Financial Statements

Item 6.  Selected Financial Data

(millions, except as noted)
Revenues and Income
Total Revenues
(Loss) Income from Continuing Operations Including
Noncontrolling Interests
Net (Loss) Income Including Noncontrolling
Net (Loss) Income Attributable to Noble Energy
Per Share Data, Attributable to Noble Energy
(Loss) Earnings Per Share - Basic

(Loss) Income from Continuing Operations
(Loss) Earnings Per Share - Basic
(Loss) Earnings Per Share - Diluted

(Loss) Income from Continuing Operations
(Loss) Earnings Per Share - Diluted

Cash Dividends Per Share
Year-End Stock Price Per Share
Weighted Average Shares Outstanding

Basic
Diluted
Cash Flows
Net Cash Provided by Operating Activities
Additions to Property, Plant and Equipment
Proceeds from Divestitures (1)
Proceeds from Issuance of Noble Energy Common
Stock, Net of Offering Costs
Proceeds from Issuance of Noble Midstream Partners
Common Units, Net of Offering Costs
Financial Position
Cash and Cash Equivalents
Property, Plant, and Equipment, Net
Goodwill (2)
Total Assets
Long-term Obligations

2017

Year Ended December 31,
2015

2014

2016

2013

$

4,256

$

3,491

$

3,183

$

5,115

$

5,015

(1,050)
(1,050)
(1,118)

(985)
(985)
(998)

(2,441)
(2,441)
(2,441)

1,214
1,214
1,214

$

(2.38) $
(2.38)

(2.32) $
(2.32)

(6.07) $
(6.07)

$

3.36
3.36

(2.38)
(2.38)
0.40
29.14

469
469

1,951
2,649
2,073

—

312

675
17,502
1,310
21,476

$

$

(2.32)
(2.32)
0.40
38.06

430
430

1,351
1,541
1,241

—

299

1,180
18,548
—
21,011

$

$

(6.07)
(6.07)
0.72
32.93

402
402

2,062
2,979
151

1,112

—

1,028
21,300
—
24,196

$

$

3.27
3.27
0.68
47.43

361
367

3,506
4,871
321

—

—

1,183
18,143
620
22,518

$

$

$

$

907
978
978

2.53
2.72

2.50
2.69
0.55
68.11

359
363

2,937
3,947
327

—

—

1,117
15,725
627
19,642

Long-Term Debt
Deferred Income Taxes
Asset Retirement Obligations, Noncurrent
Other

4,566
2,441
547
562
Total Equity
9,184
(1)  Proceeds for 2017 relate to the Marcellus Shale upstream divestiture and proceeds received from other transactions. Proceeds for 2016 
primarily relate to US onshore non-strategic asset divestiture activity and the sell-down of Tamar interest. See Item 8. Financial 
Statements and Supplementary Data – Note 4.  Acquisitions, Divestitures and Merger 

6,068
2,516
670
417
10,325

7,976
2,826
861
358
10,370

6,746
1,127
824
421
10,619

7,011
1,819
775
328
9,600

(2)  Goodwill at December 31, 2017 related to the Clayton Williams Energy Acquisition. Our previous goodwill balance was fully impaired 
at December 31, 2015. See Item 8. Financial Statements and Supplementary Data – Note 1.  Summary of Significant Accounting 
Policies.

53

Year Ended December 31,
2015

2014

2016

$

$

$

125
40.39
54
14.92
1,397
2.42

333
219
5,308
1,437
2,274

$

$

$

112
45.00
39
13.91
1,187
2.44

307
189
5,549
1,421
2,395

103
91.58
23
33.75
992
3.38

304
128
5,833
1,404
2,735

$

$

$

2013

99
100.29
16
35.53
901
2.97

322
113
5,828
1,406
2,527

Table of Contents
Index to Financial Statements

Operations Information - Consolidated Operations
Consolidated Crude Oil Sales (MBbl/d)
Average Realized Price ($/Bbl)
Consolidated NGL Sales (MBbl/d)
Average Realized Price ($/Bbl)
Consolidated Natural Gas Sales (MMcf/d)
Average Realized Price ($/Mcf)
Proved Reserves
Crude Oil and Condensate Reserves (MMBbls)
NGL Reserves (MMBbls)
Natural Gas Reserves (Bcf)
Total Reserves (MMBoe)
Number of Employees

$

$

$

2017

$

$

$

129
49.73
58
23.40
1,118
3.01

457
229
7,680
1,965
2,277

54

Table of Contents
Index to Financial Statements

Item 7.  Management’s Discussion and Analysis of Financial Condition and Results of Operations

Management's Discussion and Analysis of Financial Condition and Results of Operations (MD&A) is intended to provide a 
narrative about our business from the perspective of our management. Our MD&A is presented in the following major sections:

•  Executive Summary;
•  Executive Overview;
•  Operating Outlook;
•  Results of Operations - E&P; 
•  Results of Operations - Midstream;
•  Results of Operations - Corporate;
•  Liquidity and Capital Resources; and
•  Critical Accounting Policies and Estimates. 

The accompanying consolidated financial statements, including the notes thereto, contain detailed information that should be 
read in conjunction with our MD&A.

EXECUTIVE SUMMARY

Noble Energy Key Metrics (see links below for further information)  

Items 1. and 2. Business and Properties – Sales Volume, 
Price and Cost Data

Results of Operations - E&P

Items 1. and 2. Business and Properties – Proved Reserves 
Disclosures
Item 8. Financial Statements and Supplementary Data – 
Supplementary Oil and Gas Information (Unaudited) 

55

Table of Contents
Index to Financial Statements

Liquidity and Capital Resources – Cash Flows

Item 8. Financial Statements and Supplementary Data – 
Consolidated Statements of Cash Flows

Items 1. and 2. Business and Properties – Domestic and 
International

Liquidity and Capital Resources – Acquisition, Capital 
Expenditures and Other Exploration Expenditures

Items 1. and 2. Business and Properties – Sales Volume, Price 
and Cost Data

Results of Operations - E&P

Items 1. and 2. Business and Properties – Proved 
Reserves Disclosures
Item 8. Financial Statements and Supplementary Data – 
Supplemental Oil and Gas Information (Unaudited) 

56

Table of Contents
Index to Financial Statements

EXECUTIVE OVERVIEW

Industry Outlook

Crude Oil   The global oil and gas industry is cyclical, and crude oil prices are volatile, driven by crude oil supply, which 
includes OPEC and non-OPEC producers, and global crude oil demand. 

In 2014, our industry entered a downturn due to oversupplied crude oil production from non-OPEC producers, primarily driven 
by US unconventional oil production growth from tight formations and the de-bottlenecking of transportation infrastructure.  
Coupled with OPEC’s decision not to reduce production quotas and muted global crude oil demand growth, crude oil prices 
began falling rapidly in late 2014.

The rapid decline in crude oil prices impacted US and other non-OPEC producers' capital budgets, which resulted in lower 
crude oil production.  Further, in late 2016, OPEC announced voluntary production curtailments in an effort to stabilize excess 
crude oil supply and crude oil prices and to rebalance crude oil inventories. The decline in supply from these producers has 
aided in stabilizing the crude oil market.  As a result, crude oil prices have recently recovered to three-year record highs, while 
production from the US has increased, allowing US producers to absorb global market share. 

Global crude oil products demand has increased, supported by lower crude oil prices and a synchronized global economic 
recovery, leading to increased refinery utilization and crude oil demand. Increased demand has further contributed to stabilizing 
crude oil prices.

The outlook for 2018 crude oil prices will continue to depend on supply and demand dynamics, as well as global geopolitical 
and security factors in crude oil-producing nations. Reductions in industry investment, particularly for conventional crude oil 
development, will, over time, contribute to production declines, helping to balance supply and demand in the crude oil market.  

Natural Gas   The US domestic natural gas market remains oversupplied as domestic production has continued to grow due to 
drilling efficiencies, completion of DUC well inventory and de-bottlenecking of transportation infrastructure. In contrast to 
crude oil supply curtailments, there has been little to offset natural gas supply growth, which continues to outpace demand 
domestically. As a result, natural gas prices remained range-bound in 2017. We expect this situation to continue into 2018, with 
natural gas prices at or near current or recent trading levels.

Impact of Current Commodity Prices   Modest commodity price improvement has increased both our consolidated average 
realized crude oil and consolidated average natural gas prices by approximately 20% in 2017 as compared to 2016. The chart 
below shows the historical trend in benchmark prices for West Texas Intermediate (WTI) crude oil, Brent crude oil and US 
Henry Hub natural gas. 

Because the global economic outlook and commodity price environment are uncertain, we have maintained a robust financial 
liquidity position to ensure financial flexibility. We have also planned a 2018 capital investment program that will be flexible 
and responsive to positive or negative price conditions that may develop and support continued business investment in a 
volatile commodity price environment. See 2018 Capital Investment Program, below.

See Item 1A. Risk Factors – The oil and gas industry is cyclical and an extended period of suppressed commodity prices could 
have material adverse effects on our operations, our liquidity, and the price of our common stock.

Development and Operating Costs  Third party oilfield service and supply costs are also subject to supply and demand 
dynamics. During 2017, increases in US onshore drilling and completion activity resulted in higher demand for oilfield 
services. As a result, the costs of drilling, equipping and operating wells and infrastructure experienced some inflation, which, 

57

Table of Contents
Index to Financial Statements

along with commodity prices, impacted industry operating margins. Conversely, the industry has reduced capital-intensive 
offshore exploration and drilling activities in response to the commodity price environment. Demand for and costs associated 
with offshore conventional oil services have declined and, in the near-term, will likely not be subject to cost inflation.

Recent Activities   Implementation of our focused strategy has enhanced our future outlook.  Over the past three years, we 
have made significant changes and enhancements to our business:

Portfolio Transformation, Including: 

• 
• 
• 

• 

• 

entered the liquids-rich Eagle Ford Shale and Delaware Basin through the Rosetta Merger;
expanded our Delaware Basin position through the Clayton Williams Energy Acquisition;
exited the Marcellus Shale upstream and are exiting the Marcellus Shale midstream, thereby accelerating monetization 
of assets not attracting capital;
established the Noble Midstream business, including an initial public offering of Noble Midstream Partners, and 
executed the first asset drop down transaction; and
accelerated DJ Basin value through numerous acreage exchanges and sales.

Operational Accomplishments, Including:

• 

• 
• 

• 

• 

focused capital and resources on highest-margin assets within US onshore liquids plays and the Eastern 
Mediterranean;
sanctioned the initial phase of Leviathan development, with first natural gas sales targeted for the end of 2019;
excluding the impact of the Marcellus Shale upstream divestiture, increased proved reserves by more than 65% from 
2016;
excluding the impact of the Marcellus Shale upstream divestiture, increased total US onshore sales volumes by more 
than 15% from 2016 and shifted to an oilier production mix, with more than 40% of our US onshore consolidated 
sales volumes attributable to crude oil; and
improved well level and corporate returns with technology advancements and structural cost savings.

Financial Strength, Including:

proactive and strategic action to manage within cash flows;

• 
•  made net repayments of debt totaling $1.69 billion, since beginning of 2016 through cash on hand, proceeds from 

asset sales, and cash generated by our midstream business;

•  maintained a strong liquidity position including cash on hand and unused borrowing capacity; and
•  maintained our investment grade credit ratings.

In summary, during 2017, we closed several strategic portfolio transactions demonstrating our continued focus on enhancing 
company margins and returns. Our current portfolio includes assets which are well-positioned on the industry cost of supply 
curve, offering growth at financially attractive rates of return. Operationally, we continued to drive efficiencies in our US 
onshore drilling and completions, while advancing our Eastern Mediterranean regional natural gas developments. Financially, 
we continued to maintain our strong balance sheet and robust liquidity position.

Subsequent Events   The Company has evaluated the period after the balance sheet date, noting no subsequent events or 
transactions that required recognition or disclosure in the financial statements, other than as previously disclosed or noted 
below.

Share Repurchase Program   On February 15, 2018, we announced the Company's Board of Directors authorized a share 
repurchase program of $750 million which expires December 31, 2020. All purchases will be made in accordance with 
applicable securities laws from time to time in open market or private transactions, depending on market conditions, and may 
be discontinued at any time.     

Gulf of Mexico Divestiture   On February 15, 2018, we announced the Company signed a definitive agreement to sell its assets 
in the Gulf of Mexico for cash consideration of $480 million. As part of the transaction, the buyer will assume all abandonment 
obligations associated with the properties which we estimate to approximate $230 million as of December 31, 2017. The net 
book value of the Gulf of Mexico assets as of December 31, 2017 was approximately $750 million. We expect to incur a charge 
in early 2018, subject to customary closing adjustments. The transaction is expected to close during second quarter 2018, 
contingent upon the buyer’s successful implementation of its contemplated restructuring, and will be effective as of January 1, 
2018.

GSPAs - Israel Export   On February 19, 2018, we executed two independent GSPAs for the sale of natural gas from the 
Leviathan and Tamar fields to Dolphinus Holdings Limited to supply natural gas in Egypt. Sales volumes under the GSPA 
associated with the Leviathan field are anticipated to begin at a firm rate of approximately 350 MMcf/d, gross, (approximately 
139 MMcf/d, net) at the startup of the Leviathan project currently anticipated at the end of 2019. For the Tamar agreement, 
sales volumes are anticipated to begin at an interruptible rate of up to 350 MMcf/d, gross, (approximately 114 MMcf/d, net) 

58

Table of Contents
Index to Financial Statements

dependent upon gas availability beyond existing customer obligations in Israel and Jordan. The GSPA includes an option to 
convert the Tamar interruptible quantity to a firm-basis with a take or pay commitment. Both contracts are for a 10-year term 
and have pricing terms indexed to Brent crude, similar to other export contracts in the region. The GSPAs are subject to 
satisfaction of conditions precedent, including regulatory approvals and licenses, and finalizing gas transportation agreements.  

OPERATING OUTLOOK

Growing Long-Term Value   We believe the following guiding principles will contribute to growing long-term value:

•  Execution of a disciplined capital allocation process by: 

designing a flexible investment program aligned with the current commodity price environment; and

  maintaining a strong balance sheet and liquidity position.

•  Enhancing capital efficiencies through:

utilizing our technical competencies and applying historical learnings from unconventional US shale plays to 
reduce US onshore finding and development costs; and
driving Delaware Basin economics through development cycle efficiencies.

•  Leveraging the benefits of our well-positioned and diversified portfolio including:

exercising investment optionality and flexibility afforded by our assets, which are largely held by production; 
and
continuing portfolio optimization actions to maximize strategic value.

•  Capitalizing on a currently low-cost offshore environment with execution of high-quality, long-cycle development 

projects, such as:

progressing Leviathan field development.

•  Maintaining financial strength through:

focusing operational activities on high-margin, high-return assets;
improving overall corporate returns; and
ensuring cash flow sources and uses remain balanced.

As we enter 2018, we believe we have positioned the Company for sustainability, operational efficiency, and long-term success 
throughout the oil and gas business cycle. However, if commodity prices decline or operating costs begin to rise, we could 
experience material negative impacts on our revenues, profitability, cash flows, liquidity and proved reserves, and, in response, 
we may consider reductions in our capital program or dividends, asset sales or otherwise. Our production and our stock price 
could decline as a result of these potential developments. See Item 1A. Risk Factors – The oil and gas industry is cyclical and 
an extended period of suppressed commodity prices could have material adverse effects on our operations, our liquidity, and 
the price of our common stock.

2018 Production   Production may be impacted by factors including:

• 
• 

• 

• 

• 

• 
• 
• 
• 

• 

• 

commodity prices, which, if subject to decline, could result in current production becoming uneconomic;
overall level and timing of capital expenditures which, as discussed below and dependent upon our drilling success,    
will impact near-term production volumes;
increased drilling activity, which may cause US onshore cost inflation pressure and result in certain current production 
becoming less profitable or uneconomic;
Israeli industrial and residential demand for electricity, which is largely impacted by weather conditions and the 
conversion of Israel's electricity portfolio from coal to natural gas;
timing of the divestiture of the remaining 7.5% working interest in the Tamar and Dalit fields, in accordance with the 
Framework, which will leave us with a 25% working interest and will accelerate value realization, but lower our 
forward sales volumes;
timing of crude oil and condensate liftings impacting sales volumes in West Africa;
natural field decline in US onshore, Gulf of Mexico and offshore Equatorial Guinea;
additional purchases of producing properties or divestments of operating assets;
potential weather-related volume curtailments due to hurricanes in the Gulf of Mexico and Gulf Coast areas, or winter 
storms and flooding impacting US onshore operations;
availability or reliability of supplier services, including access to support equipment and facilities, occurrence of 
pipeline disruptions, and/or potential pipeline and processing facility capacity constraints, which may cause delays, 
restrictions or interruptions in production and/or midstream processing;
timing and completion of midstream expansion projects by Noble Midstream Partners in areas that provide services to 
our assets;

•  malfunctions and/or mechanical failures at terminals or other US onshore delivery points;
• 
• 
• 

impact of enhanced completion efforts for US onshore assets;
potential growth from participation in future, or decline from existing, non-operated wells;
abandonment of low-margin US onshore wells;

59

 
 
 
 
 
 
 
 
 
Table of Contents
Index to Financial Statements

• 
• 

shut-in of US producing properties if storage capacity becomes unavailable; and
potential drilling and/or completion permit delays due to future regulatory changes.

2018 Capital Investment Program   

Our 2018 capital investment program is designed to deliver near and long-term value and is flexible in the current commodity 
price environment. Excluding capital funded by Noble Midstream Partners, our preliminary 2018 program accommodates an 
investment level of approximately $2.7 to $2.9 billion, with approximately 95% being allocated to US onshore development 
and the Eastern Mediterranean. The remaining portion of our 2018 capital program is designated for other activities, including 
exploration for lease acquisition, seismic and other geological analysis in support of future exploration prospects for potential 
development post 2020, as well as other corporate activities.

2018 Budget Principles   Our 2018 capital program anticipates a similar level of investment directed to our US onshore assets, 
as compared with 2017. We will continue to advance our US onshore program through investments in liquids-rich and high-
return projects, improve execution efficiency, enhance our midstream business value, grow our high margin Delaware Basin 
position and invest capital supporting drilling commitments to retain leases in line with our strategy. In the Eastern 
Mediterranean, our 2018 capital program accommodates increased investment as we progress toward development of the 
Leviathan project. We expect our level of capital investment in the Leviathan project to peak in 2018 and will be supported by 
proceeds received from the divestiture of the remaining 7.5% working interest in the Tamar field.

We will evaluate the level of capital spending throughout the year based on the following factors, among others, and their effect 
on project financial returns: 

• 
• 
• 
• 
• 
• 
• 
• 
• 
• 

• 

commodity prices, including price realizations on specific crude oil, natural gas and NGL production;
operating and development costs;
production, drilling and delivery commitments, or other contractual obligations;
drilling results;
property acquisitions and divestitures;
exploration activity;
cash flows from operations, including cash flows from potential midstream drop-down transactions;
indebtedness levels;
availability of financing or other sources of funding;
impact of new laws and regulations on our business practices, including potential legislative or regulatory changes 
regarding the use of hydraulic fracturing; and
potential changes in the fiscal regimes of the US and other countries in which we operate.

We plan to fund our capital investment program from cash flows from operations, cash on hand, proceeds from divestments of 
assets, borrowings under our Revolving Credit Facility, and/or other sources of funding. See Liquidity and Capital Resources – 
Cash Flows - Financing Activities, and – Contractual Obligations – Exploration Commitments and Continuous Development 
Obligations.

Impact of Recent Changes in US Tax Law

On December 22, 2017, the US Congress enacted the Tax Reform Legislation, making significant changes to US federal 
income tax law beginning in 2018. See Item 1A. Risk Factors 

While we believe that certain aspects of the new law will positively impact our future after-tax earnings, primarily due to the 
lower federal statutory tax rate, the ultimate impact of the Tax Reform Legislation may differ from our estimates due to changes 
in interpretations and assumptions made by us as well as additional regulatory guidance that may be issued. See Item 8. 
Financial Statements and Supplementary Date – Note 11. Income Taxes.

Potential for Future Impairments

We have had in the past, and may incur in the future, various impairments of proved and unproved properties, related to the 
following:

•  Exploration Activities and Unproved Properties   We may impair and/or relinquish certain undeveloped leases prior to 
expiration based upon changes in exploration plans, timing and extent of development activities, availability of capital 
and suitable rig and drilling equipment, resource potential, comparative economics, changing regulations and/or other 
factors. In addition, in the event we conclude that an exploratory well did not encounter hydrocarbons or that a 
discovery or prospect is not economically or operationally viable, the associated capitalized exploratory well costs 
would be charged to expense. 

•  Development Concept Selection Costs   We may write-off costs related to certain development concepts, including 

costs of related pre-FEED and FEED studies, associated with significant offshore projects, particularly those in remote 
or under-developed areas, when such development concepts are eliminated from further consideration based on the 

60

Table of Contents
Index to Financial Statements

determination of the final development concept or when the concept itself is determined to be economically 
unfeasible.

•  Producing Properties   We may impair a proved property based on a decrease in forward commodity prices, or 

widening of basis differentials, or an increase in abandonment costs, among other factors.

•  Divestments   We may periodically divest certain assets to reposition our portfolio. When properties meet the criteria 
for reclassification as assets held for sale, they are valued at the lower of net book value or anticipated sales proceeds 
less transaction-related costs to sell. Impairment expense would be recorded for any excess of net book value over 
anticipated sales proceeds less transaction-related costs to sell. In addition, a further loss, which could be material, 
could occur upon closing of a sales transaction.

See also: Item 1A. Risk Factors; Item 7. Management's Discussion and Analysis of Financial Condition and Results of 
Operations – Exploration Expense; Item 8. Financial Statements and Supplementary Data – Note 5. Asset Impairments and – 
Note 6.  Capitalized Exploratory Well Costs and Undeveloped Leasehold Costs.

61

Table of Contents
Index to Financial Statements

RESULTS OF OPERATIONS – E&P

Highlights for our E&P business were as follows:

2017 Significant E&P Operating Highlights Included:

• 
• 
• 

total average daily sales volumes of 381 MBoe/d;
record average daily sales volumes for US onshore crude oil of 90 MBbl/d; and
average daily sales volumes for natural gas of 272 MMcf/d, net, in Israel, and an all-time record for full year average 
daily gross sales volumes for natural gas of 956 MMcfe/d, primarily from the Tamar field.

2017 E&P Financial Results Included:

• 
• 
• 
• 
• 

average realized crude oil price increase of 23% as compared to 2016;
average realized NGL price increase of 56% as compared to 2016;
average realized natural gas price increase of 24% as compared to 2016;
pre-tax loss of $1.8 billion, as compared with pre-tax loss of $1.3 billion for 2016; and
capital expenditures of $2.4 billion, excluding acquisitions, as compared with $1.2 billion for 2016.

Following is a summarized statement of operations for our E&P business:

(millions)
Oil, NGL and Gas Sales to Third Parties
Income from Equity Method Investees
Total Revenues
Production Expense
Exploration Expense
Depreciation, Depletion and Amortization
Loss on Marcellus Shale Upstream Divestiture (1)
Asset Impairments (2)
(Gain) Loss on Commodity Derivative Instruments
Goodwill Impairment
Clayton Williams Energy Acquisition Expenses  (3)
Income (Loss) Before Income Taxes

$

Year Ended December 31,
2016

2015

2017

$

4,060
120
4,180
1,270
188
1,965
2,379
70
(63)
—
100
(1,803)

$

3,389
50
3,439
1,200
925
2,395
—
92
139
—
—
(1,271)

3,093
39
3,132
1,067
488
2,073
—
533
(501)
779
—
(1,699)

(1)  See Item 8. Financial Statements and Supplementary Data – Note 4.  Acquisitions, Divestitures and Merger.
(2)  See Item 8. Financial Statements and Supplementary Data – Note 5.  Asset Impairments.
(3)  See Item 8. Financial Statements and Supplementary Data – Note 3.  Clayton Williams Energy Acquisition.

Revenues

Oil, Gas and NGL Sales Agreements   We generally sell crude oil, natural gas, and NGLs under two types of agreements 
common in our industry. Both types of agreements may include transportation charges. One type of agreement is a netback 
agreement, under which we sell crude oil and natural gas at the wellhead and receive a price, net of transportation expense 
incurred by the purchaser. In the case of NGLs, we may receive a price from the purchaser, which is net of fractionation and 
processing costs. We record crude oil, natural gas and NGL sales without deductions relating to transportation, fractionation or 
processing. These deductions are recorded as production expense. 

In addition, commodity prices we receive may be reduced by location-basis differentials, which can be significant.  For 
example, transportation bottlenecks or infrastructure limitations may increase demand for available transportation and 
gathering facilities, which could lead to competitive pricing between operators of a particular area. As a result of location-basis 
differentials, our reported sales prices may differ significantly from published commodity price benchmarks for the same 
period. 

62

Table of Contents
Index to Financial Statements

Average Oil, Gas and NGL Sales Volumes and Prices  Average daily sales volumes and average realized sales prices were as 
follows:

Sales Volumes

Crude Oil & 
Condensate
(MBbl/d)

NGLs
(MBbl/d)

Natural Gas
(MMcf/d)

Total
(MBoe/d) (1)

Average Realized Sales Prices

Crude Oil & 
Condensate
(Per Bbl)

NGLs (Per
Bbl)

Natural
Gas
(Per Mcf)

Year Ended December 31, 2017

United States

111

Israel
Equatorial Guinea (2)
Total Consolidated
Operations
Equity Investee (3)
Total
Year Ended December 31, 2016

—

18

129

2

131

United States

Israel
Equatorial Guinea (2)
Total Consolidated
Operations
Equity Investee (3)
Total

99

—

26

125

2

127

Year Ended December 31, 2015

United States

Israel
Equatorial Guinea (2)
Total Consolidated
Operations
Equity Investee (3)
Total

81

—

31

112

2

114

58

—

—

58

6

64

54

—

—

54

5

59

39

—

—

39

5

44

607

272

239

1,118

—

1,118

881

281

235

1,397

—

1,397

708

252

227

1,187

—

1,187

270

$

49.11

$

23.40

$

46

57

373

8

381

301

47

65

413

7

$

$

—

53.68

49.73

55.13

49.84

39.59

—

43.54

40.39

45.44

$

$

—

—

23.40

38.48

24.81

14.92

—

—

14.92

26.30

$

$

420

$

40.46

$

15.96

$

237

$

43.46

$

13.91

$

42

69

348

7

—

48.85

45.00

48.85

—

—

13.91

28.40

355

$

45.05

$

15.59

$

3.02

5.32

0.27

3.01

—

3.01

2.11

5.21

0.27

2.42

—

2.42

2.10

5.34

0.27

2.44

—

2.44

(1)  Natural gas is converted on the basis of six Mcf of gas per one barrel of crude oil equivalent. This ratio reflects an energy content 

equivalency and not a price or revenue equivalency. Given commodity price disparities, the price for a barrel of crude oil equivalent for 
US natural gas and NGLs is significantly less than the price for a barrel of crude oil. In Israel, we sell natural gas under contracts where 
the majority of the price is fixed, resulting in less commodity price disparity.

(2)  Natural gas from the Alba field is under contract for $0.25 per MMBtu to a methanol plant, an LPG plant, an LNG plant and a power 

generation plant. The methanol and LPG plants are owned by affiliated entities accounted for under the equity method.

(3)  Volumes represent sales of condensate and LPG from Alba Plant in Equatorial Guinea. 

63

Table of Contents
Index to Financial Statements

An analysis of revenues from sales of crude oil, natural gas and NGLs is as follows:

(millions)
2015 Sales Revenues

Changes due to

Increase in Sales Volumes
(Decrease) Increase in Sales Prices

2016 Sales Revenues

Changes due to

Increase (Decrease) in Sales Volumes
Increase in Sales Prices

2017 Sales Revenues

Crude Oil &
Condensate

NGLs

Natural
Gas

Total

$

$

$

1,840

$

197

$

1,056

$

3,093

153
(139)
1,854

55
437
2,346

$

$

84
15
296

17
180
493

$

$

190
(7)
1,239

(182)
164
1,221

$

$

427
(131)
3,389

(110)
781
4,060

Crude Oil and Condensate Sales Revenues  Revenues from crude oil and condensate sales increased in 2017 as compared with 
2016 due to the following:

• 
• 

• 

23% increase in average realized prices due to the partial rebalancing of global supply and demand factors;
higher US onshore sales volumes of 16 MBbl/d, including 5 MBbl/d contributed by recently acquired Clayton 
Williams Energy assets, primarily attributable to increased development and enhanced well design and completion 
techniques; and
higher sales volumes of 2 MBbl/d due to full year of production at Gunflint, a Gulf of Mexico project that started 
production in July 2016;

partially offset by:

• 

lower sales volumes of 14 MBbl/d primarily due to natural field decline in the Gulf of Mexico and Equatorial Guinea.

Revenues from crude oil and condensate sales remained relatively flat in 2016 as compared with 2015 due to the following:

• 

• 

• 

higher sales volumes of 9 MBbl/d in the Eagle Ford Shale and Delaware Basin, primarily attributable to full year 
consolidation following the Rosetta Merger; 
sales volumes from the Big Bend and Dantzler developments (Gulf of Mexico), which began producing fourth quarter 
2015 and contributed 12 MBbl/d, net, collectively in 2016; and
sales volume from the start up of the Gulf of Mexico Gunflint development in July 2016 which contributed 3 MBbl/d;

partially offset by:

• 

• 

10% decrease in total consolidated average realized prices, primarily due to the decline in global crude oil prices that 
began in the second half of 2014 and continued into 2016; and
decrease in sales volumes due to natural field decline at the Aseng and Alen fields, offshore Equatorial Guinea.

NGL Sales Revenues  Revenues from NGL sales increased in 2017 increased as compared with 2016 due to the following:

• 
• 

56% increase in average realized prices due to the partial rebalancing of global supply and demand factors; and
higher US onshore sales volumes of 7 MBbl/d, including 1 MBbl/d contributed by recently acquired Clayton Williams 
Energy assets, primarily attributable to increased development and enhanced well design and completion techniques;

partially offset by:

• 

lower sales volumes of 4 MBbl/d due to the divestiture of the Marcellus Shale upstream assets in second quarter 2017. 

Revenues from NGL sales increased in 2016 as compared with 2015 due to the following:

• 

• 

• 

higher sales volumes of 14 MBbl/d in the Eagle Ford Shale and Delaware Basin, primarily attributable to a full year of 
production as well as increased development activity; 
7% increase in total consolidated average realized prices, primarily due to higher spot prices in the Marcellus Shale; 
and
higher sales volumes of 2 MBbl/d in the DJ Basin, primarily attributable to increased well productivity due to 
enhanced completion techniques and increased processing capacity;

partially offset by:

• 

slightly lower sales volumes in the Marcellus Shale due to the higher dry gas composition of wells that were brought 
online in 2016.

Natural Gas Sales Revenues  Revenues from natural gas sales decreased slightly in 2017 as compared with 2016 due to the 
following:

• 

lower sales volumes of 312 MMcf/d due to the divestiture of the Marcellus Shale upstream assets in second quarter 
2017; and

64

 
Table of Contents
Index to Financial Statements

• 

lower sales volumes of 29 MMcf/d as a result of the sale of a 3.5% working interest in the Tamar field, offshore Israel, 
in December 2016, partially offset by higher gross sales volumes from the field;

partially offset by:

• 
• 

24% increase in average realized prices due to the partial rebalancing of global supply and demand factors; and
higher US onshore sales volumes of 40 MMcf/d, including 6 MMcf/d contributed by recently acquired Clayton 
Williams Energy assets.

Revenues from natural gas sales in 2016 as compared with 2015 due to the following:

• 

• 

• 

• 

higher sales volumes of 93 MMcf/d in the Marcellus Shale, primarily attributable to well completion and 
infrastructure development;
higher sales volumes of 81 MMcf/d in the Eagle Ford Shale and Delaware Basin, primarily attributable to full year 
consolidation following the Rosetta Merger; 
record sales volumes from the Tamar field, offshore Israel, which contributed an incremental 29 MMcf/d, in response 
to higher power generation needs; and
higher sales volumes offshore Equatorial Guinea due to the completion of the Alba B3 compression project.

Income from Equity Method Investees  Our share of operations of equity method investees was as follows:

Year Ended December 31,
2016

2017

2015

Net Income (in millions)
AMPCO and Affiliates
Alba Plant

Dividends (in millions)
AMPCO and Affiliates
Alba Plant
Sales Volumes

Methanol (MMgal)
Condensate (MBbl/d)
LPG (MBbl/d)

Average Realized Prices
Methanol (per gallon)
Condensate (per Bbl)
LPG (per Bbl)

$

$

$

58
65

47
68

163
2
6

$

16
34

16
40

162
2
5

8
31

31
29

117
2
5

$

0.97
55.13
38.48

$

0.63
45.44
26.30

0.92
48.85
28.40

Changes for 2017 as compared with 2016 included the following:

• 
• 

net income from AMPCO and affiliates increased primarily due to higher realized methanol prices; and
net income from Alba Plant increased primarily due to higher LPG sales volumes and higher realized commodity 
prices. 

Changes for 2016 as compared with 2015 included the following:

• 

• 

net income from AMPCO and affiliates increased in 2016 as compared with 2015 primarily due to higher methanol 
sales volumes, partially offset by lower methanol prices; and
net income from Alba Plant remained relatively flat. 

65

 
 
 
 
Table of Contents
Index to Financial Statements

Production Expense  Components of production expense were as follows:

(millions, except unit rate)

Year Ended December 31, 2017
Lease Operating Expense (3)
Production and Ad Valorem Taxes

Gathering, Transportation and
Processing Expense

Total Production Expense

Total Production Expense per BOE
Year Ended December 31, 2016
Lease Operating Expense (3)
Production and Ad Valorem Taxes

Gathering, Transportation and
Processing Expense

Total Production Expense

Total Production Expense per BOE
Year Ended December 31, 2015
Lease Operating Expense (3)
Production and Ad Valorem Taxes

Gathering, Transportation and
Processing Expense

Total Production Expense

Total Production Expense per BOE

Total per 
BOE (1)

Total

United
States (1)

Israel

Equatorial
Guinea

Other 
Int'l(2)

$

$

$

$

$

$

4.29

0.99

4.04

9.32

3.72

0.50

3.73

7.95

4.52

0.99

2.88

8.39

$

$

$

$

$

$

$

$

$

585

135

550

1,270

9.32

560

76

564

1,200

7.95

575

126

366

1,067

8.39

$

$

$

$

$

$

$

$

$

466

135

550

1,151

11.68

418

76

564

1,058

9.63

398

126

366

890

10.29

$

$

$

$

$

$

$

$

$

29

—

—

29

1.74

37

—

—

37

2.14

42

—

—

42

2.72

$

$

$

$

$

$

$

$

$

$

$

$

$

$

$

$

90

—

—

90

4.28

105

—

—

105

4.42

131

—

—

131

$

5.21

—

—

—

—

—

—

—

—

—

—

4

—

—

4

N/M

N/M Amount is not meaningful. 
(1)  United States upstream production expense includes charges from our midstream operations that are eliminated on a consolidated basis. 

See Item 1. Financial Statements – Note 15.  Concentration of Risk.

(2)  Other International includes the North Sea in 2015.
(3)  Lease operating expense includes oil and gas operating costs (labor, fuel, repairs, replacements, saltwater disposal and other related 

lifting costs) and workover expense. 

Lease Operating Expense   Lease operating expense increased in 2017 as compared with 2016 primarily due to the following:

• 

increase of $82 million in US onshore, primarily in the DJ Basin, Delaware Basin and Eagle Ford Shale due to 
increased activity;

partially offset by:

• 
• 
• 
• 

decrease of $19 million due to natural field decline in the Gulf of Mexico;  
decrease of $17 million related to the divestiture of the Marcellus Shale upstream assets in second quarter 2017;
decrease of $15 million due to various cost reduction initiatives offshore West Africa; and
decrease of $11 million due to a 3.5% lower working interest in the Tamar field, offshore Israel, following the partial 
divestiture in December 2016.

Lease operating expense decreased in 2016 as compared with 2015 due to the following: 

• 

decrease of $92 million in US onshore, primarily in the DJ Basin and Marcellus Shale, and $27 million offshore 
Equatorial Guinea due to cost reduction initiatives, including lower equipment utilization and saltwater disposal costs;

partially offset by:

• 

• 

increase of $74 million attributable to new production from US onshore and Gulf of Mexico development activities; 
and
increase of $38 million related to the acquisition of Eagle Ford Shale and Delaware Basin production third quarter 
2015.

Production and Ad Valorem Tax Expense   Production and ad valorem taxes increased in 2017 as compared with 2016, 
primarily due to higher commodity prices and a $28 million US onshore severance tax refund recorded in first quarter 2016 
versus a $7 million US onshore severance tax charge recorded in first quarter 2017.

66

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents
Index to Financial Statements

Production and ad valorem taxes decreased in 2016 as compared with 2015, primarily due to lower revenues and a US onshore 
severance tax refund, both driven by a decline in US commodity prices.

Gathering, Transportation and Processing Expense   Gathering, transportation and processing expense remained relatively flat 
in 2017 as compared with 2016 primarily due to:

• 

decrease of $120 million related to the divestiture of the Marcellus Shale upstream assets in second quarter 2017;

partially offset by:

• 

• 

increase of $57 million in the DJ Basin due to the shifting of crude oil volumes onto a new export pipeline and 
contractual increases of pipeline fees; and
increase of $47 million related to higher production in the Delaware Basin and Eagle Ford Shale.

Gathering, transportation and processing expense increased in 2016 as compared with 2015 due to:

• 
• 
• 
• 

increase of $66 million related to higher production from our Marcellus Shale assets;
increase of $57 million related to change in mix of transportation methods used for our DJ Basin production;
increase of $49 million related to higher production from our Eagle Ford Shale assets acquired third quarter 2015; and
increase of $17 million related to production from new Gulf of Mexico projects at Big Bend and Dantzler (which 
began producing fourth quarter 2015) and Gunflint (which began producing in July 2016).

Unit Rate Per BOE   Production expense on a per BOE basis increased in 2017 compared to 2016, primarily due to the 
increases in certain production expenses noted above. In addition, the Marcellus Shale upstream divestiture resulted in the 
removal of lower-cost, natural gas-focused sales volumes from our portfolio, while an increase in Delaware Basin and Eagle 
Ford Shale volumes contributed higher-cost, crude oil-focused sales volumes, thereby increasing our average production 
expense per BOE. Also, higher commodity prices led to higher production and ad valorem taxes per BOE.

The unit rate of total production expense per BOE decreased for 2016 as compared with 2015, primarily driven by lower 
production and ad valorem taxes as a result of lower commodity prices and lower lease operating expenses as a result of cost 
reductions in certain areas, such as equipment utilization and saltwater disposal. The decrease in the unit rate per BOE was 
partially offset by higher transportation and gathering expenses due to higher-cost production volumes from certain US onshore 
assets.  

Exploration Expense   Components of exploration expense were as follows:

(millions)
Year Ended December 31, 2017
Leasehold Impairment and Amortization
Dry Hole Cost (4)
Seismic, Geological and Geophysical
Staff Expense
Other (5)
Total Exploration Expense
Year Ended December 31, 2016
Leasehold Impairment and Amortization
Dry Hole Cost (4)
Seismic, Geological and Geophysical
Staff Expense
Other (5)
Total Exploration Expense
Year Ended December 31, 2015
Leasehold Impairment and Amortization
Dry Hole Cost (4)
Seismic, Geological and Geophysical
Staff Expense
Other (5)
Total Exploration Expense

Total

United
States

Eastern 
Mediter-
ranean (1)

West 
  Africa (2)

Other Int'l (3)

$

$

$

$

$

$

62
9
27
55
35
188

148
579
76
77
45
925

113
266
34
43
32
488

$

$

$

$

$

$

60
—
8
1
33
102

123
85
—
3
34
245

105
93
5
—
—
203

$

$

$

$

$

$

— $
—
—
2
—
2

$

— $
26
—
1
7
34

$

5
—
—
1
6
12

$

$

— $
—
—
4
1
5

$

— $
468
10
5
—
483

$

3
33
10
—
—
46

$

$

2
9
19
48
1
79

25
—
66
68
4
163

—
140
19
42
26
227

(1)  Eastern Mediterranean includes Israel and Cyprus.
(2)  West Africa includes Equatorial Guinea, Cameroon and Gabon.
(3)  Other International includes Newfoundland, Suriname and other new ventures.

67

 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents
Index to Financial Statements

(4)  For a discussion of dry hole cost, see Items 1. and 2. Business and Properties – International – West Africa and Item 8. Financial Statements 

(5) 

and Supplementary Data –  Note  6.  Capitalized Exploratory Well Costs and Undeveloped Leasehold Costs.
Includes lease rental and other exploration expense.

Exploration expense for 2017 included:

• 
• 

leasehold impairment expense related primarily to Gulf of Mexico unproved properties; and
dry hole cost of $7 million for the Araku-1 exploration well, offshore Suriname.

Exploration expense for 2016 included:

• 

• 

leasehold impairment expense including the write-off of leases and licenses of $58 million for the Gulf of Mexico, $25 
million for other international locations, and $10 million for other US onshore; and
dry hole cost including costs related to the Silvergate exploratory well, Gulf of Mexico, the Dolphin 1 natural gas 
discovery, offshore Israel, and certain discoveries offshore West Africa.

Exploration expense for 2015 included:

leasehold impairment expense including the write-off of our northeast Nevada leases of $21 million;

• 
•  US dry hole cost including amounts related to northeast Nevada exploration efforts which we elected to discontinue 

after assessing commercial viability in the current commodity price environment; and
dry hole cost including the Cheetah well, offshore West Africa, and Other International dry hole cost.

• 

Exploration expense included stock-based compensation expense of $7 million in 2017, $10 million in 2016 and $13 million in 
2015.

Depreciation, Depletion and Amortization   DD&A expense was as follows:

(millions, except unit rate)

Total

United
States

Eastern
Mediter-
ranean

West
Africa

Other Int'l

$
$

$
$

1,965
14.42

Twelve Months Ended December 31, 2017
DD&A Expense
Unit Rate per BOE (1)
Twelve Months Ended December 31, 2016
DD&A Expense
Unit Rate per BOE (1)
Twelve Months Ended December 31, 2015
DD&A Expense
Unit Rate per BOE (1)
N/M Amount is not meaningful. 
(1)  DD&A expense includes accretion of discount on asset retirement obligations of $47 million in 2017, $48 million in 2016, and $43 

2,395
15.87

2,073
16.29

1,677
19.40

1,739
17.65

2,103
19.14

326
12.93

76
4.56

205
8.63

81
4.69

146
6.95

70
4.53

$
$

$
$

$
$

$
$

$
$

$
$

$
$

$
$

$
$

$
$

$

$

$

4
N/M

6
N/M

—
N/M

million in 2015.

Total DD&A expense decreased in 2017 as compared with 2016 due to the following:

• 

• 

• 

• 

• 

• 

year-end reserve additions, primarily in US onshore due to enhanced well design and completion techniques in our 
horizontal drilling program and globally due to positive price revisions. For more information, see reserves discussion 
in Supplemental Oil and Gas Information (Unaudited);
slightly lower sales volumes in the DJ Basin and the impact of certain property divestitures since the second quarter 
2016;
the Marcellus Shale upstream divestiture in second quarter 2017, which reduced 2017 DD&A expense by $291 
million;
the sale of a 3.5% working interest in the Tamar field, offshore Israel, in December 2016, which reduced 2017 DD&A 
expense by approximately $7 million; 
a reduction in depletable costs of $153 million in the second quarter 2017 due to the reallocation of common asset 
costs from the Alen field, offshore Equatorial Guinea, to the West Africa natural gas monetization development 
project, which reduced 2017 DD&A expense by $37 million; and
lower sales volumes in the Gulf of Mexico due to natural field decline and reduction in the depletable costs due to 
downward revisions in estimates of asset retirement costs; 

68

Table of Contents
Index to Financial Statements

partially offset by:

• 

• 

• 

higher US onshore sales volumes of 29 MBoe/d during 2017, including 7 MBoe/d contributed by recently acquired 
Clayton Williams Energy assets; 
an increase in sales volumes from the Gunflint development, Gulf of Mexico, which commenced production in July 
2016; and
higher gross sales volumes from the Tamar field, offshore Israel, due to higher domestic demand. 

The unit rate per BOE for 2017 decreased 9% as compared with 2016, primarily due to year-end reserve additions in US 
onshore, a reduction in the Alen field net book value in second quarter 2017, and certain DJ Basin property divestitures since 
second quarter 2016. These decreases were offset by the commencement of sales volumes from new crude oil-focused wells in 
US onshore, as well as the divestiture of natural gas-focused sales volumes from Marcellus Shale upstream assets. 

Total DD&A expense increased for 2016 as compared with 2015 due to the following:

• 

• 

• 

increase of $178 million related to higher sales volumes resulting from commencement of production from the Big 
Bend, Dantzler and Gunflint development projects in the Gulf of Mexico in 2016 and 2015;
increase of $134 million related to the acquisition of Eagle Ford Shale and Delaware Basin production in third quarter 
2015; and
$121 million related to the reduction in proved reserves in fourth quarter 2015, primarily due to downward price 
revisions in DJ Basin and Marcellus Shale;

partially offset by:

• 

an overall lower segment rate for offshore Equatorial Guinea due to the fluctuation in production from higher DD&A 
rate assets, the Aseng and Alen fields, to a lower DD&A rate asset, the Alba field.

The unit rate per BOE for 2016 decreased as compared with 2015, primarily due to lower-cost production volumes from the 
Tamar and Alba fields and net book value impairments in fourth quarter 2015 related to downward commodity price revisions. 
The decrease in the unit rate per BOE was partially offset by increased higher-cost production volumes from certain US 
onshore properties and recently commenced production from Gulf of Mexico assets, including Big Bend, Dantzler and 
Gunflint.

RESULTS OF OPERATIONS – MIDSTREAM 

The Midstream segment owns, operates, develops and acquires domestic midstream infrastructure assets, with current focus 
areas being the DJ and Delaware Basins.

Major Midstream Activities - Noble Midstream Partners   During 2017, major activities included the following:

• 
• 
• 
• 

progressed the construction and development of multiple major projects in the DJ and Delaware Basins;
began providing crude oil and produced water gathering services to an unaffiliated third party;
entered into the Advantage Joint Venture; and
entered into the Black Diamond Gathering arrangement with definitive agreements to acquire the Saddle Butte system.

Major Midstream Activities - Noble Energy   During 2017, we entered into an agreement to sell our 50% interest in CONE 
Gathering. We closed the sale in January 2018, receiving cash proceeds of $308 million.

Results of Operations

Highlights for the Midstream segment were as follows:

2017 Midstream Financial Results Included:

• 
• 

pre-tax income of $233 million, as compared with pre-tax income of $176 million for 2016; and
capital expenditures, excluding acquisitions, of $399 million compared with capital expenditures of $42 million for  
2016.

69

Table of Contents
Index to Financial Statements

Following is a summarized statement of operations for the Midstream segment:

(millions)
Midstream Services Revenues – Third Party
Income from Equity Method Investees
Intersegment Revenues
Total Revenues
Gathering, Transportation and Processing Expense
Depreciation, Depletion and Amortization
Income Before Income Taxes

Year Ended December 31,
2016

2015

2017

$

$

19
57
277
353
70
30
233

— $
52
200
252
44
19
176

—
51
119
170
25
14
123

Midstream Services and Intersegment Revenues   The amount of revenue generated by the Midstream business depends 
primarily on the volumes of crude oil, natural gas and water for which services are provided to our E&P business and to third 
party customers. These volumes are affected by the level of drilling and completion activity in our areas of upstream operations 
and by changes in the supply of, and demand for, crude oil, natural gas and NGLs in the markets served directly or indirectly by 
our midstream assets.

Total revenues, excluding income from equity method investees, for 2017 increased from 2016 by $96 million mainly due to 
increases of $60 million and $17 million driven by our drilling and completion activities in the DJ and Delaware Basins, 
respectively, and an increase of $19 million primarily due to commencement of services in the DJ Basin to an unaffiliated third 
party.

Total revenues, excluding income from equity method investees, for 2016 increased from 2015 by $81 million due to our 
drilling and completion activities in the DJ Basin.

Income from Equity Method Investees and Other  Midstream's share of operations of equity method investees was as follows:

Year Ended December 31,
2016

2015

2017

Net Income (in millions)

CONE Gathering and CONE Midstream
Advantage Pipeline
White Cliffs

Dividends (in millions)

CONE Gathering and CONE Midstream

Gathering, Transportation and Processing Expense

$

$

51
2
4

25

$

48
—
5

27

46
—
—

17

Total expense for 2017 increased by $26 million as compared with 2016 due to the following:

• 

• 

an increase of $20 million in water services expense due to increased services provided by third parties as well as 
higher throughput volumes associated with  fresh water services; and
an increase of $6 million in gathering and facilities operating expense due to higher gathered volumes, as well as due 
to new systems placed in service and expansion of the gathering infrastructure in 2017.   

Total expense for 2016 increased by $19 million as compared with 2015 due to the following:

• 
• 

an increase of $12 million in water services expense due to an expanded scope of water services delivered; and
an increase of $7 million in gathering systems and facilities operating expense associated with higher gathered 
volumes as well as general repairs and maintenance of our gathering systems and facilities.

DD&A Expense   

Depreciation. depletion and amortization expense for 2017 increased by $11 million as compared with 2016 due to the assets 
placed in service in 2017, specifically assets associated with the construction of the Greeley Crescent facilities and the 
Delaware Basin gathering systems, including completion of two CGFs, and expansion of gathering and fresh water systems in 
the Wells Ranch, East Pony and Mustang IDP areas.

Depreciation, depletion and amortization expense for 2016 increased by $5 million as compared with 2015 due to assets placed 
in service as a result of the expansion of Wells Ranch CGF in 2016 and in second half 2015 and commissioning of the East 
Pony crude oil gathering system during 2016.

70

 
 
Table of Contents
Index to Financial Statements

RESULTS OF OPERATIONS – CORPORATE

General and Administrative Expense   General and administrative expense (G&A) was as follows:

Year Ended December 31,
2016

2017

2015

G&A Expense (millions)
Unit Rate per BOE (1)

$
$

415
3.05

$
$

399
2.64

$
$

396
3.11

(1)  Consolidated unit rates exclude sales volumes and expenses attributable to equity method investees.

G&A expense for 2017 increased slightly as compared with 2016 primarily due to increased employee costs driven by 
acquisition activities. The increase in the unit rate per BOE for 2017 as compared with 2016 was due primarily to the decrease 
in total sales volumes driven by the divestiture of the Marcellus Shale upstream assets.  Our total number of employees 
increased from 2,274 at December 31, 2016 to 2,277 at December 31, 2017.  

G&A expense for 2016 was flat as compared with 2015 primarily due to sustained cost savings initiatives and decreases in 
employee personnel costs. Our total number of employees decreased from 2,395 at December 31, 2015 to 2,274 at December 
31, 2016.  

G&A expense is impacted by the number of stock-based awards, the market price of our common stock and price volatility 
which may result in a higher or lower fair value of stock-based awards as calculated using various valuation models. G&A 
expense included stock-based compensation expense of $54 million in 2017, $62 million in 2016 and $50 million in 2015. See 
Item 8. Financial Statements and Supplementary Data – Note 12.  Stock-Based and Other Compensation Plans.

Other Operating Expense See Item 8. Financial Statements and Supplementary Data – Note 2.  Additional Financial Statement 
Information for a discussion of our other operating expense. 

Loss (Gain) on Extinguishment of Debt   See Item 8. Financial Statements and Supplementary Data – Note 10.  Long-Term 
Debt for discussion of our extinguishment of debt activities. 

Interest Expense and Capitalized Interest   Interest expense and capitalized interest were as follows:

(millions, except per unit)
Interest Expense
Capitalized Interest
Interest Expense, Net
Unit Rate per BOE (1)

Year Ended December 31,
2016

2017

2015

$

$
$

403
(49)
354
2.60

$

$
$

412
(84)
328
2.17

$

$
$

407
(144)
263
2.07

(1)  Consolidated unit rates exclude sales volumes and expenses attributable to equity method investees.

The decrease in interest expense in 2017 as compared with 2016 is due to the repayment of our Term Loan Facility due January 
6, 2019 (Term Loan Facility) and refinancing of our 8.25% senior notes. See Liquidity and Capital Resources - Capital 
Structure/Financing Strategy.

The decrease in capitalized interest in 2017 as compared with 2016 is primarily due to the write off of discoveries offshore 
Equatorial Guinea, lower work in progress amounts related to major long-term projects, including Gunflint, Gulf of Mexico, 
and the Alba B3 compression project, offshore Equatorial Guinea, offset by a higher work in progress amount related to the 
Leviathan major long-term development project, offshore Israel. 

The increase in interest expense in 2016 as compared with 2015 is primarily due to the impact of senior notes assumed in the 
Rosetta Merger during third quarter 2015, a portion of which were subsequently tendered during first quarter 2016 through 
proceeds derived from our Term Loan Facility.

The decrease in capitalized interest in 2016 as compared with 2015 is primarily due to lower work in progress amounts related 
to major long-term projects, including Big Bend and Dantzler, Gulf of Mexico, which were completed in fourth quarter 2015, 
and Gunflint, Gulf of Mexico, and the Alba B3 compression project, offshore Equatorial Guinea, which were completed in July 
2016. Additional items that contributed to the decrease in capitalized interest include the farm-out of a portion of Block 12, 
offshore Cyprus, during fourth quarter 2015, the write-off of the Humpback dry hole, offshore Falkland Islands, during fourth 
quarter 2015 and timing of US onshore activities.  

Interest is capitalized on exploration and development projects using an interest rate equivalent to the average rate paid on 
long-term debt. Capitalized interest is included in the cost of oil and gas assets and amortized with other costs on a unit-of-
production basis. The majority of the capitalized interest is related to long lead-time projects in the Gulf of Mexico, offshore 

71

 
 
 
Table of Contents
Index to Financial Statements

West Africa and offshore Eastern Mediterranean. See Item 8. Financial Statements and Supplementary Data – Note 6.  
Capitalized Exploratory Well Costs and Undeveloped Leasehold Costs.

Income Taxes  See Item 8. Financial Statements and Supplementary Data – Note 11.  Income Taxes.

LIQUIDITY AND CAPITAL RESOURCES

Capital Structure/Financing Strategy

In seeking to effectively fund and monetize our discovered hydrocarbons, we employ a capital structure and financing strategy 
designed to provide sufficient liquidity throughout the commodity price cycle, including a sustained period of low 
prices. Specifically, we strive to retain the ability to fund long cycle, multi-year, capital intensive development projects 
throughout a range of scenarios, while also funding a continuing exploration program and maintaining capacity to capitalize on 
financially attractive periodic mergers and acquisitions opportunities, such as the recent Clayton Williams Energy Acquisition. 
We endeavor to maintain a strong balance sheet and investment grade credit rating in service of these objectives. 

We strive to maintain a minimum liquidity level to address volatility and risk. Traditional sources of our liquidity are cash 
flows from operations, cash on hand, available borrowing capacity under our Revolving Credit Facility, and proceeds from 
divestitures of properties. We occasionally access the capital markets to ensure adequate liquidity exists in the form of 
unutilized capacity under our Revolving Credit Facility or to refinance scheduled debt maturities. We also evaluate potential 
strategic farm-out arrangements of our working interests for reimbursement of our capital spending. We may consider 
repatriations of foreign cash to increase our financial flexibility and fund our capital investment program. See Operating 
Outlook – Impact of Recent Changes in US Tax Law.

During 2017, we focused on implementation of our portfolio transformation strategy and executed a number of divestitures 
which generated cash proceeds of over $2 billion. We utilized the proceeds from divestitures to improve our capital structure by 
repayment of $1.3 billion of borrowing under our Revolving Credit Facility associated with the Clayton Williams Energy 
Acquisition and $550 million of the remaining balance outstanding under our Term Loan Facility due January 6, 2019. To 
further strengthen our liquidity profile we performed a series of financing transactions, including retirement of $1 billion of our 
8.25% senior notes due March 1, 2019 with the proceeds from issuance of $600 million of 3.85% and $500 million of 4.95% 
senior notes due January 15, 2028 and August 15, 2047, respectively. Through the repayment of our Term Loan Facility and 
refinancing of our 8.25% senior notes, we effectively eliminated our near-term debt maturities and lowered our future interest 
expense by $48 million on an annual basis. 

We aim to fund our capital program through operating cash flows and utilize borrowings under our Revolving Credit Facility to 
fund additional requirements. In 2017, we borrowed and repaid amounts under our Revolving Credit Facility resulting in $230 
million remaining outstanding as of December 31, 2017. Funds were utilized for general corporate purposes and for funding of 
our capital development program. As a result of our 2017 financing activities, we ended 2017 with over $4.5 billion in liquidity, 
including almost $3.8 billion of availability under our Revolving Credit Facility.

During 2017, we also focused on the continued execution of our integrated midstream strategy through Noble Midstream 
Partners. In addition to completion of several key infrastructure assets in the DJ and Delaware Basins, as well as continuing 
significant construction activities in the DJ Basin, Noble Midstream Partners purchased certain midstream assets from Noble 
Energy for $270 million and expanded its business through entry into certain arrangements to acquire and operate midstream 
assets. Funding for these transactions included $312 million raised through the issuance of Noble Midstream Partners common 
units and borrowings under the Noble Midstream Services LLC Revolving Credit Facility (Noble Midstream Services 
Revolving Credit Facility). As of December 31, 2017, $85 million was outstanding under the Noble Midstream Services 
Revolving Credit Facility. Funds were used to partially fund 2017 acquisitions and to finance the midstream capital investment 
program. See Item 8. Financial Statements and Supplementary Data - Note 4. Acquisitions, Divestitures and Merger. 

In addition, we received $300 million in payments from foreign operations on an outstanding note payable in 2017, leaving a 
balance of approximately $434 million that can be repaid without additional US tax impact. 

As of December 31, 2017, our outstanding debt (excluding capital lease and other obligations) totaled $6.5 billion. While we 
have no near-term debt maturities, we may periodically seek to access the capital markets to refinance a portion of our 
outstanding indebtedness. 

We may from time to time seek to retire or purchase our outstanding senior notes, and/or seek to improve shareholder returns, 
through cash purchases in the open market, privately negotiated transactions or otherwise. Such activities, if any, will depend 
on prevailing market conditions, our liquidity requirements, contractual restrictions and other factors. The amounts involved 
may be material. 

72

Table of Contents
Index to Financial Statements

Sources and Uses of Liquidity  

Our operating cash flows are a significant source of our liquidity. In 2017, we experienced strengthening crude oil prices and 
completed several transformative transactions, repositioning our portfolio from low-margin natural gas-focused assets to high 
margin crude oil-rich assets, which significantly contributed to the funding of our capital program. Additional sources of 
funding were available through debt financing activities, including borrowings under our Revolving Credit Facility, and 
divestment of certain non-strategic oil and gas properties. During 2017, we continued investment in our high cash flow growth 
assets and, excluding effects of divestitures, increased production levels from prior years, while also increasing per unit profit 
margins. We also improved our financial profile by reducing our debt balance by $255 million with the use of proceeds from 
divestments, and decreasing our future interest expense. 

For 2018, we will continue our effort to manage our cash flows through capital efficiencies, cost management endeavors, and 
focusing on the growth of production from high-margin, high-return assets. With such an approach, nearly all of our 2018 
capital investment is allocated to our US onshore plays and the Eastern Mediterranean, specifically the Leviathan development 
project, offshore Israel.

Our 2018 production target is in the range of 343 MBoe/d to 353 MBoe/d and we expect our 2018 capital spending program 
(excluding acquisitions and Noble Midstream Partners capital), to be in the range of $2.7 to $2.9 billion, or approximately $400 
million higher than the 2017 budget. Should WTI and Brent oil prices continue to improve in 2018, we expect future operating 
cash flows to increase and provide additional sources of liquidity compared to 2017. We expect to support our investment 
program with operating cash flows resulting from our US onshore and Israel offshore assets, with the remainder of the future 
capital commitments funded with cash on hand, borrowings under our Revolving Credit Facility and divestment of non-
strategic assets.

We believe our current liquidity level and balance sheet, along with our ability to access the capital markets, provide flexibility 
and that we are well-positioned to fund our business throughout the commodity price cycle. We will continue to evaluate the 
commodity price environment and our level of capital spending throughout 2018. However, a downgrade or other negative 
action with respect to our credit rating could trigger requirements to post collateral as financial assurance of performance under 
certain contractual arrangements, potentially impacting our liquidity and/or negatively impacting our cost, terms, conditions 
and availability of future financing. See Item 1A. Risk Factors – A downgrade or other negative action with respect to our 
credit rating could negatively impact our business and financial condition.

The table below summarizes our cash, debt balances and available liquidity: 

(millions, except percentages)
Total Cash (1)
Amount Available to be Borrowed Under Revolving Credit Facility (2)
Total Liquidity
Total Debt (3)
Noble Energy Share of Equity
Ratio of Debt-to-Book Capital (4)

2017

713

3,770
4,483

6,859
10,619

$

$

$

December 31,
2016

$

$

$

1,209

4,000
5,209

7,114
9,600

2015

1,028

4,000
5,028

7,976
10,370

$

$

$

39%

43%

43%

(2) 

(1)  Total cash at December 31, 2017 includes $18 million cash of Noble Midstream Partners and $37.5 million restricted cash related to the 
Saddle Butte acquisition that closed in first quarter of 2018. Total cash at December 31, 2016 includes $57 million cash of Noble 
Midstream Partners, and restricted cash of $30 million related to the Delaware Basin property acquisition that closed in January 2017. 
In 2017, amount available to be borrowed under the Revolving Credit Facility excludes $265 million  and $625 million available to be 
borrowed under the Noble Midstream Services Revolving Credit Facility and Leviathan Term Loan Facility (defined below), 
respectively, which are not available to Noble Energy for general corporate purposes. In 2016, it excludes $350 million  available to be 
borrowed under the Noble Midstream Services Revolving Credit Facility. See discussion below.

(3)  Total debt includes capital lease and other obligations and excludes unamortized debt discount/premium, and issuance costs.

Our long-term debt (excluding capital lease and other obligations) totaled $6.5 billion at December 31, 2017, with maturities ranging 
from 2020 to 2097. 

(4)  We define our ratio of debt-to-book capital as total debt (which includes long-term debt excluding unamortized discount/premium and 
issuance costs, the current portion of long-term debt, and short-term borrowings) divided by the sum of total debt plus Noble Energy's 
share of equity.  Significant changes in our financial position impacting the ratio included $255 million net decrease in debt, $1.9 billion 
increase in shareholders' equity due to issuance of stock as part of consideration paid for Clayton Williams Energy Acquisition, $312 
million increase due to issuance of Noble Midstream Partners Common Units and $100 million increase due to stock based 
compensation, offset by $190 million decrease in shareholders' equity from dividends paid and $1.1 billion decrease in shareholders' 
equity from current year net loss.

73

 
 
 
 
Table of Contents
Index to Financial Statements

Cash and Cash Equivalents  Our cash is primarily denominated in US dollars and invested in money market funds and short-
term deposits with major financial institutions. Approximately $493 million of this cash was attributable to foreign subsidiaries 
at December 31, 2017. 

Revolving Credit Facilities  Noble Energy's Revolving Credit Facility of $4.0 billion matures in 2020. The Noble Midstream 
Services Revolving Credit Facility of $350 million matures in 2021. These facilities are used to fund capital investment 
programs and acquisitions and may periodically provide amounts for working capital purposes. At December 31, 2017, $230 
million was outstanding under the Revolving Credit Facility and $85 million was outstanding under the Noble Midstream 
Services Revolving Credit Facility, leaving $3.8 billion and $265 million in remaining availability under the respective credit 
facilities. See Item 8. Financial Statements and Supplementary Data - Note 10.  Long-Term Debt.

Leviathan Term Loan Facility   On February 24, 2017, we entered into a facility agreement (Leviathan Term Loan Facility) 
providing for a limited recourse secured term loan facility with an aggregate principal borrowing amount of up to $1 billion, of 
which $625 million is initially committed. Any amounts borrowed under the Leviathan Term Loan Facility will be available to 
fund a portion of our share of costs for the initial phase of development of the Leviathan field, offshore Israel. To support the 
Leviathan development program and to bring first production online by the end of 2019, we may borrow amounts under this 
facility in the near-term. As of December 31, 2017, no amounts were drawn under this facility. 

Term Loan Facility   In fourth quarter 2017, we utilized proceeds received from sale of non-strategic acreage in the DJ Basin to 
repay the remaining outstanding balance of $550 million under this $1.4 billion facility. See Item 8. Financial Statements and 
Supplementary Data - Note 10.  Long-Term Debt.

Senior Notes   During 2017 we took steps in managing our long-term debt maturities and liquidity through a series of financing 
transactions. We issued $600 million of 3.85% senior unsecured notes that will mature on January 15, 2028 and $500 million of 
4.95% senior unsecured notes that will mature on August 15, 2047. We used the proceeds to redeem $1 billion of our 8.25% 
senior unsecured notes which were due March 1, 2019. Through these transactions, we effectively enhanced our financial 
flexibility and lowered our future cash interest expense by approximately $35 million on an annual basis. See Item 8. Financial 
Statements and Supplementary Data - Note 10.  Long-Term Debt.

Cash Flows

The following table summarizes our cash flows from operating, investing and financing activities:

Year Ended December 31,
2016

2015

2017

(millions)
Total Cash Provided By (Used in)

Operating Activities
Investing Activities
Financing Activities

Increase (Decrease) in Cash and Cash Equivalents

$

$

$

1,951
(1,606)
(850)
(505) $

1,351
(431)
(768)
152

$

$

2,062
(2,871)
654
(155)

Operating Activities  Cash flows from operating activities include all transactions and other events that are not defined as 
investing or financing activities and are generally the cash effects of transactions and other events that enter into the 
determination of net income.

In 2017, net cash provided by operating activities increased as compared with 2016. The change in cash flows from operating 
activities was primarily the result of higher average realized commodity prices partially offset by lower sales volumes and 
lower settlements of commodity derivative instruments. The reduction of our sales volumes was mainly driven by the decrease 
in sale of natural gas as a result of Marcellus Shale upstream asset divestiture. The increase in cash flows from sales was offset 
by the decrease in settlements proceeds from our commodity derivative instruments. The decrease in cash received from 
derivative settlements is reflective of an increase in the commodity prices as crude oil and natural gas prices strengthened in the 
second half of 2017. 

Working capital changes resulted in a $150 million operating cash flow decrease in 2017 as compared with a $460 million 
operating cash flow decrease in 2016. The changes in working capital were primarily due to an increase in our current 
liabilities, including accrued liabilities and trade payables for drilling and development costs and midstream capital 
expenditures. The increase in current liabilities was partially offset by the increase in accounts receivable resulting from higher 
revenues and higher joint interest billing receivables, primarily due to billings associated with Leviathan development project 
costs. 

In 2017, we made cash interest payments related to outstanding debt of $394 million as compared to $412 million in 2016.

74

 
 
 
 
Table of Contents
Index to Financial Statements

In 2016, net cash provided by operating activities for 2016 decreased as compared with 2015.  Decreases in average realized 
commodity prices and lower settlements of commodity derivative instruments were partially offset by increases in sales 
volumes. Working capital changes resulted in a $460 million operating cash flow reduction in 2016 as compared with a 
negative impact of $129 million in 2015 and were due primarily to decreases in capital accruals related to reduced development 
activity, as well as an increase in accounts receivable related to higher revenues. 

In 2016, we made cash interest payments related to outstanding debt of $412 million as compared to $404 million in 2015.

Investing Activities  Our investing activities include capital spending on a cash basis for oil and gas properties and midstream 
infrastructure and investments in unconsolidated subsidiaries accounted for by the equity method. These investing activities 
may be offset by proceeds from property sales or dispositions, including farm-out arrangements, which may result in 
reimbursement for capital spending that had occurred in prior periods.

In 2017, capital spending for additions to property, plant and equipment, excluding acquisitions, totaled $2.6 billion compared 
to $1.5 billion in 2016. Approximately $700 million of the increase was due to increased US onshore development activity in 
response to a more favorable commodity price environment, as well as our focus on development of high margin areas in the 
DJ and Delaware Basins, and approximately $416 million increase was related to the initial Leviathan project development.

In addition, we used  $637 million of cash, net of $21 million of cash acquired, to fund a portion of the consideration paid in 
the Clayton Williams Energy Acquisition, and we acquired Delaware Basin and other assets for $327 million.

In 2017, we received net cash proceeds of over $2 billion from divestitures of non-core assets, including:

• 
• 
• 

$1.0 billion from the Marcellus Shale upstream divestiture;
$568 million on the sale of Greeley Crescent and Bronco acreage in the DJ Basin; and
$335 million from the sale of mineral and royalty assets.

See Item 8. Financial Statements and Supplementary Data - Note 3. Clayton Williams Energy Acquisition and Note 4. 
Acquisitions, Divestitures and Merger.

We utilized these sales proceeds to partially fund our Clayton Williams Energy Acquisition, support our development activities 
in core operational areas, repay outstanding balances under the Term Loan Facility and further strengthen our liquidity position.

Other investing activities provided a net $87 million of cash as of December 31, 2017.

In comparison, capital expenditures in 2016 were $1.5 billion or nearly half of capital spent in 2015 due to the timing of 
completion of major project development activities in the Gulf of Mexico, DJ Basin and Marcellus Shale. We received 
approximately $1.2 billion of proceeds from asset divestitures during 2016 as compared with $151 million of proceeds from 
divestitures during 2015. In 2016, we invested $8 million in CONE Gathering, and received cash distributions of $70 million, 
accounted for as investing activity, from CONE Midstream.

In 2015, capital spending for property, plant and equipment was $3.0 billion, representing a decrease of $1.9 billion as 
compared with 2014, primarily due to decreased major project development activity in our operational areas. We received $151 
million of proceeds from asset divestitures during 2015 as compared with $321 million proceeds from divestitures during 2014, 
and acquired cash of $61 million in the Rosetta Merger. We also invested $104 million in CONE Gathering in 2015.

Financing Activities  Our financing activities include the issuance or repurchase of Noble Energy common stock and Noble 
Midstream Partners common units, payment of cash dividends to Noble Energy shareholders and cash distributions to Noble 
Midstream Partners noncontrolling interest owners, and debt transactions.

In 2017, our primary financing activities included $230 million net Revolving Credit Facility borrowings (including the 
borrowing and repayment of $1.3 billion associated with the Clayton Williams Energy Acquisition), $85 million net Noble 
Midstream Services Revolving Credit Facility borrowings used primarily to fund an acquisition, a $1.1 billion senior note 
refinancing, $595 million related to the repayment of Clayton Williams Energy debt, and a $550 million Term Loan Facility 
repayment.  In addition, we received $312 million net proceeds from the issuance of Noble Midstream Partners common units, 
paid $190 million of cash dividends and $28 million of cash distributions, and made $60 million of capital lease principal 
payments. 

We also received $10 million cash proceeds from the exercise of stock options and purchased 1,031,000 shares of treasury 
stock with a value of $36 million. These shares included 719,849 shares with a value of $25 million related to vesting of 
Clayton Williams Energy restricted stock and options in connection with the Clayton Williams Energy Acquisition. The 
remaining shares were surrendered for the payment of withholding taxes due on the vesting of employee restricted stock 
awards. 

In 2016, we used Term Loan Facility proceeds of $1.4 billion to redeem $1.4 billion of senior notes. We subsequently repaid 
$850 million of the Term Loan Facility from cash on hand. We received $299 million net proceeds from the issuance of Noble 
Midstream Partners common units in a public offering. Funds were also provided by cash proceeds from, and tax benefits 

75

Table of Contents
Index to Financial Statements

related to, the exercise of stock options ($18 million). We used cash to pay dividends on our common stock ($172 million), 
make principal payments related to capital lease obligations ($53 million), and repurchase 237,000 shares of our common stock 
($4 million). 

In 2015, we received approximately $1.1 billion net proceeds from the issuance of shares of common stock in a public offering. 
Funds were also provided by cash proceeds from, and tax benefits related to, the exercise of stock options ($7 million). We 
used cash to pay dividends on our common stock ($291 million), make principal payments related to capital lease obligations 
($67 million), and repurchase 491,000 shares of our common stock ($21 million). Subsequent to the Rosetta Merger, we 
incurred financing cash outflows to facilitate the exchange of Rosetta's debt ($12 million) as well as repay the balance 
outstanding under Rosetta's credit facility ($70 million).

See Item 8. Financial Statements and Supplementary Data – Consolidated Statements of Cash Flows.

Dividends  We paid cash dividends totaling 40 cents per common share in 2017, 40 cents per common share in 2016, and 72 
cents per common share in 2015. See Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer 
Purchases of Equity Securities.

Acquisition, Capital Expenditures and Other Exploration Expenditures

Our capital expenditures (on an accrual basis) were as follows for the year ended December 31, 2017:

Year Ended December 31,
2016

2015

2017

(millions)
Acquisition, Capital and Exploration Expenditures
Unproved Property Acquisition (1)
Proved Property Acquisition (2)
Exploration
Development
Midstream(3)
Corporate and Other
Total
Other

Investment in Equity Method Investee (4)
Increase in Capital Lease Obligations  (5)

$

$

$

$

$

$

1,817
839
42
2,310
480
34
5,522

68
—

$

$

$

234
—
222
1,017
42
50
1,565

8
5

1,480
1,613
322
2,055
356
97
5,923

104
55

(1) 

(2) 

(3) 

(4) 

2017 costs include $1.6 billion related to the Clayton Williams Energy Acquisition and $246 million related to the Delaware Basin asset 
acquisition. 
2016 costs relate to properties exchanged with CONSOL upon termination of the Marcellus Shale joint development agreement. 
2015 costs include $1.4 billion related to the Rosetta Merger.
2017 costs include $722 million of proved properties and $63 million of asset retirement obligations acquired in the Clayton Williams 
Energy Acquisition and $58 million related to the Delaware Basin asset acquisition. 
2015 costs of $1.6 billion are related to the Rosetta Merger. 

2017 includes gathering and processing assets of $48 million related to the Clayton Williams Energy Acquisition.
2016 includes Noble Midstream Partners expenditures.
2015 includes midstream assets acquired in the Rosetta Merger. 

2017 includes our contribution to the Advantage Joint Venture, in which Noble Midstream Partners owns a 50% interest.
2015 includes investments in CONE Gathering, in which we previously owned a 50% interest. See Item 8. Financial Statements and 
Supplementary Data -  Note 4. Acquisitions, Divestitures and Merger. 

(5)  Relates to US onshore assets.

Total capital expenditures increased during 2017 as compared with 2016 as we pursued strategic portfolio repositioning through 
a number of acquisitions in our core onshore operational areas in the Delaware Basin and also continued execution of our 
midstream capital investment program through Noble Midstream Partners. The increase in development capital is in response to 
the strengthening of commodity prices in the second half of 2017 and is primarily related to drilling and development costs of 
$1.9 billion incurred mainly in our three US onshore plays (DJ Basin, Delaware Basin and Eagle Ford Shale). Additionally, 
$416 million of capital expenditures in 2017 was associated with the initial Leviathan project development, while in 2016 we 
incurred $106 million of project development costs, offshore Israel.

In 2016, total expenditures decreased as compared with 2015, excluding acquisition costs of $3.2 billion related to the Rosetta 
Merger, as we responded to the lower commodity price environment.

76

 
 
 
 
 
 
 
Table of Contents
Index to Financial Statements

2015 expenditures, excluding the Rosetta Merger, reflect our reduced capital spending program. Given the 2015 commodity 
price environment and an industry cost structure that had yet to fully reset to lower revenue levels, we designed a substantially 
reduced capital investment program that was appropriate for the price environment.

Off-Balance Sheet Arrangements

We may enter into off-balance sheet arrangements and transactions that can give rise to material off-balance sheet obligations. 
As of December 31, 2017, material off-balance sheet arrangements and transactions that we have entered into included drilling 
rig contracts, transportation and gathering agreements, operating lease agreements, and undrawn letters of credit, all of which 
are customary in the oil and gas industry (see cross references to the Notes to the Financial Statements in the table below). 
Other than these aforementioned arrangements, we have no transactions, arrangements or other relationships with 
unconsolidated entities or other persons that are reasonably likely to materially affect our financial condition, results of 
operations, liquidity or availability of or requirements for capital resources. See also Contractual Obligations below.

Contractual Obligations

The following table summarizes certain contractual obligations as of December 31, 2017 that are reflected in the consolidated 
balance sheets and/or disclosed in the accompanying notes. Unless otherwise noted, all amounts shown are net to our interest.

Obligation

Note 
Reference (1)

Total

2018

2019 and
2020

2021 and
2022

2023 and
beyond

(millions)
Long-Term Debt (2)
Interest Payments (3)
Capital Lease and Other Obligations (4)
Drilling and Equipment Obligations (5)
Purchase Obligations (6)
Transportation and Gathering (7)
Operating Lease Obligations (8)
Other Liabilities (9)

Note 10
Note 10
Note 10
Note 17
Note 17
Note 17
Note 17
Note 12
Asset Retirement Obligations (10)
Note 9
Commodity Derivative Instruments (11) Note 8

Total Contractual Obligations

$

$

6,586
5,804
335
448
448
2,474
330

— $
324
74
343
293
215
44

$

230
645
87
105
101
499
65

875
68
17,368

$

$

51
53
1,397

$

267
15
2,014

$

1,464
555
50
—
22
405
65

99
—
2,660

$

$

4,892
4,280
124
—
32
1,355
156

458
—
11,297

(1)  References are to the Notes accompanying Item 8. Financial Statements and Supplementary Data. 
(2)  Long-term debt excludes capital lease obligations and includes our fixed rate debt and revolving credit facilities balances based on the 

maturity dates of the facilities. 

(3) 

Interest payments are based on the total debt balance, scheduled maturities and interest rates in effect at December 31, 2017. 

(4)  Annual capital lease payments, net to our interest, exclude regular maintenance and operational costs. 
(5)  Drilling and equipment obligations represent our working interest share of contractual agreements with third-party service providers to 
procure drilling rigs and other related equipment for exploratory and development drilling activities. See Counterparty Credit Risk, 
above. 

(6)  Purchase obligations represent our working interest share of contractual agreements to purchase goods or services that are enforceable, 
are legally binding and specify all significant terms, including fixed and minimum quantities to be purchased; fixed, minimum or 
variable price provisions; and the approximate timing of the transaction. See Counterparty Credit Risk, above. 

(7)  Transportation and gathering obligations represent minimum charges for firm transportation and gathering agreements related to our 

production. See Items 1. and 2. Business and Properties – Delivery and Firm Transportation Commitments. 

(8)  Operating lease obligations represent non-cancelable leases for office buildings and facilities and oil and gas operations equipment used 

in our daily operations. Amounts have not been discounted.

(9)  The table excludes deferred compensation liabilities of $197 million as specific payment dates are unknown. 
(10)  Asset retirement obligations are discounted.
(11)  Amount represents open commodity derivative instruments that were in a net payable position with the counterparty at December 31, 

2017. 

Exploration Commitments  The terms of some of our PSCs, licenses or concession agreements may require us to conduct 
certain exploration activities, including drilling one or more exploratory wells or acquiring seismic data, within specific time 
periods. These obligations can extend over periods of several years, and failure to conduct such exploration activities within the 
prescribed periods could lead to loss of leases or exploration rights. Our exploration commitments currently include 3D seismic 
obligations for certain international locations.

77

 
Table of Contents
Index to Financial Statements

Continuous Development Obligations  Although the majority of our assets are held by production, certain of our US onshore 
assets, such as our Eagle Ford Shale and Delaware Basin properties, are held through continuous development obligations. 
Therefore, we are contractually obligated to fund a level of development activity in these areas which could be substantial.  
Failure to meet these obligations may result in the loss of a lease.

Leviathan Natural Gas Project   The initial development of the Leviathan field requires substantial infrastructure and capital. 
We have executed major equipment and installation contracts in support of development activities. As of December 31, 2017, 
we had entered into contracts with remaining obligations of approximately $464 million, net, to support development and bring 
first production online by the end of 2019.

Marcellus Shale Firm Transportation Agreements   In connection with the Marcellus Shale upstream divestiture, we reduced 
our firm transportation financial commitments through the transfer of several contracts to the acquirer and retained certain other 
firm transportation contracts representing a total financial commitment of approximately $1.4 billion, undiscounted, primarily 
with remaining contract terms of two to 16 years.

One of the retained contracts relates to the Texas Eastern Pipeline, a major interstate natural gas transmission pipeline 
delivering natural gas to the northeastern US. This contract will be fully utilized through an agreement with the acquirer, 
whereby the acquirer will deliver quantities of natural gas to us and receive a netback sales price that reflects the value received 
by us at the sales point, less our effective fixed transportation fees and other expenses, plus a margin. This contract represents 
an undiscounted financial commitment of approximately $114 million as of December 31, 2017, before offset by the netback 
agreement, thus reducing the remaining overall commitment noted above.

Two of the retained contracts relate to the Leach Xpress and Rayne Xpress projects. These are interstate natural gas 
transmission pipelines, which were completed and placed in service in late 2017 and early 2018 to transport production from 
the Marcellus Shale to markets outside the basin. In fourth quarter 2017, we permanently assigned a portion of our retained 
capacity to a third party and reduced our remaining undiscounted financial commitment to approximately $418 million. At this 
time, we are unable to predict with certainty the outcome of our commercialization activities, our ability to utilize retained 
capacity and the timing of when we may recognize a non-cash exit cost in line with accounting for exit costs associated with 
these two pipeline projects.

Two additional retained contracts relate to the NEXUS and WB Xpress projects. These projects also include interstate natural 
gas transmission pipelines designed to transport production from the Marcellus Shale to markets outside the basin. Both 
projects have received FERC approval, will undergo construction activities and are targeted for in-service late 2018. These 
contracts represent an undiscounted financial commitment of approximately $870 million.

We are currently engaged in actions to commercialize and address these remaining commitments, which provide for the 
transportation of approximately 450,000 MMBtu/d of natural gas. Actions include the permanent assignment of capacity, 
negotiation of capacity release, utilization of capacity through purchase of third party natural gas, and other potential 
arrangements. In addition, we have a “call” or right to purchase natural gas, priced at a regional index, from the acquirer of the 
Marcellus Shale upstream assets. This call extends through July 1, 2022 and may be exercised on quantities of the acquirer's 
production between 431,100 MMBtu/d and 832,645 MMBtu/d.

We expect these actions, some of which may require pipeline and/or FERC approval, to ultimately reduce the financial 
commitment associated with these contracts. At the date each pipeline is placed in service and our commitment begins, we will 
evaluate our position. If we determine that we will not utilize a portion, or all, of the contracted pipeline capacity, we will 
accrue a liability, at fair value, for the net amount of the estimated remaining financial commitment and include the related 
expense in operating expense in our consolidated statements of operations.

In accordance with US GAAP, we recognize the fair value of a liability for an exit cost in the period in which a liability is 
incurred. As a result, in second quarter 2017, we accrued non-cash exit costs of $41 million, discounted, relating to our 
transportation contract with the Appalachian Gateway Project (Gateway). Gateway, another natural gas transmission pipeline, is 
currently in service. We no longer have production to satisfy this commitment and do not plan to utilize this capacity in the 
future. In addition, we recorded a $52 million accrual, discounted, in fourth quarter 2017 relating to future commitments to the 
third party who assumed a portion of our capacity on the Leach Xpress and Rayne Xpress Projects. Both charges are included 
in loss on Marcellus Shale upstream divestiture in our consolidated statements of operations. See Item 8. Financial Statements 
and Supplementary Data – Note 17. Commitments and Contingencies.

Other US Transportation Agreements   Certain of these contracts require us to make payments for any shortfalls in delivering or 
transporting minimum volumes under the commitments. As properties are undergoing development activities, we may 
experience temporary shortfalls until production volumes increase to meet or exceed the minimum volume commitments and 
will incur expense related to volume deficiencies and/or unutilized commitments. These amounts are recorded as marketing 
expense in our consolidated statements of operations. We expect to continue to incur expense related to deficiency and/or 
unutilized commitments in the near-term. Should commodity prices decline or if we are unable to continue to develop our 
properties as planned, or certain wells become uneconomic and are shut-in, we could incur additional shortfalls in delivering or 

78

Table of Contents
Index to Financial Statements

transporting the minimum volumes, and we could be required to make payments in the event that these commitments are not 
otherwise offset. We continually seek to optimize under-utilized assets through capacity release and third-party arrangements, 
as well as, for example, through the shifting of transportation of production from rail cars to pipelines when we receive a higher 
netback price. We may continue to experience these shortfalls both in the near and long-term. Item 8. Financial Statements and 
Supplementary Data – Note 2.  Additional Financial Statement Information

OIL Contingency  As of December 31, 2017, we accrued approximately $19 million for an insurance contingency due to our 
membership in OIL. OIL is a mutual insurance company which insures specific property, pollution liability and other 
catastrophic risks. As part of our membership, we are contractually committed to pay termination fees should we elect to 
withdraw from OIL. We do not anticipate withdrawing from OIL; however, the potential termination fee is calculated annually 
based on OIL’s past losses, and the liability reflecting this potential charge has been accrued as of December 31, 2017.

Letters of Credit  In the ordinary course of business, we maintain letters of credit and bank guarantees with a variety of banks in 
support of certain performance obligations of our subsidiaries. Outstanding letters of credit and bank guarantees totaled 
approximately $90 million at December 31, 2017.

Ratings Triggers  We do not have triggers on any of our corporate debt that would cause an event of default in the case of a 
downgrade of our credit rating. In addition, there are no existing ratings triggers in any of our commodity hedging agreements 
that would require the posting of collateral. However, a series of downgrades or other negative rating actions could increase our 
cost of financing, and may increase our requirements to post collateral as financial assurance of performance under certain 
other contractual arrangements such as pipeline transportation contracts, crude oil and natural gas sales contracts, work 
commitments and certain abandonment obligations. A requirement to post collateral could have a negative impact on our 
liquidity.

CRITICAL ACCOUNTING POLICIES AND ESTIMATES

The preparation of the consolidated financial statements requires our management to make a number of estimates and 
assumptions relating to the reported amounts of assets and liabilities and the disclosures of contingent assets and liabilities at 
the date of the consolidated financial statements and the reported amounts of revenues and expenses during the period. When 
alternatives exist among various accounting methods, the choice of accounting method can have a significant impact on 
reported amounts. The following is a discussion of the accounting policies, estimates and judgments which management 
believes are most significant in the application of US GAAP used in the preparation of the consolidated financial statements.

Reserves

Description   All of the reserves data in this Annual Report on Form 10-K are estimates. Estimates of our crude oil, natural gas 
and NGL reserves are prepared by our qualified petroleum engineers in accordance with guidelines established by the SEC. 
Reservoir engineering is a subjective process with numerous uncertainties inherent in estimating underground accumulations of 
crude oil, natural gas and NGLs, including the projection of future production rates and the expected timing of development 
expenditures.  In addition, economic producibility of reserves is dependent on the commodity prices used in the reserves 
estimate. Our reserves estimates are based on historical 12-month average commodity prices, unless contractual arrangements 
designate the price to be used, in accordance with SEC rules.

Reserves estimates impact our financial statements and disclosures, as the estimates are used as an input in calculation of our 
DD&A expense, assessment of impairment of crude oil and natural gas properties and in preparation of Supplemental Oil and 
Gas Disclosures.

Judgment and Uncertainties   The accuracy of any reserves estimate is a function of the quality of available data and of 
engineering and geological interpretation and judgment. Commodity prices and development and production costs are factors 
used in determining reserves economics and reserves estimates. As a result, our reserves estimates will change in the future due 
to commodity price volatility and cost changes, as well as due to new information obtained from development drilling and 
production history.

Effect if Actual Results Differ from Assumptions   Our reserves estimates are based on year-end cost, development, production 
and historical 12-month average price data. Results of drilling, testing, and production subsequent to the date of the estimate 
may justify revision of such estimate. Accordingly, reserves estimates are often different from the quantities of crude oil, 
natural gas and NGLs that are ultimately recovered due to reservoir performance and new geological and geophysical data. 
Additionally, increases in future drilling, development, production and abandonment costs and changes in commodity prices 
may result in future revisions to our reserves.

Estimates of proved crude oil, natural gas and NGL reserves significantly affect our DD&A expense. For example, if estimates 
of proved reserves decline, the DD&A rate will increase, resulting in a decrease in net income. A decline in estimates of proved 
reserves could also cause us to perform an impairment analysis to determine if the carrying amount of crude oil and natural gas 

79

Table of Contents
Index to Financial Statements

properties exceeds the fair value and could result in an impairment charge, which would reduce earnings. See Item 8. Financial 
Statements and Supplementary Data - Supplemental Oil and Gas Information (Unaudited).

Oil and Gas Properties - Successful Efforts Method of Accounting

Description   We account for crude oil and natural gas properties under the successful efforts method of accounting. 
Application of the successful efforts method results in the capitalization of costs directly related to specific oil and gas reserves 
when results are positive and expensing of certain costs, including geological and geophysical costs and delay rentals, during 
the periods the costs are incurred, and, in the case of dry hole costs, in the period the well is deemed non-commercial.

Under the successful efforts method, we capitalize the following:

•  Acquisition costs - Costs associated with the purchase, lease or other costs to acquire mineral interests in crude oil and 
natural gas properties are initially capitalized as unproved property acquisition costs.  These costs are commonly 
attributable to undeveloped leasehold costs or are derived from allocated fair values as a result of business 
combinations. Continued capitalization of these costs is dependent upon discovery of proved reserves.  For example:

If no proved reserves are discovered after exploration, drilling or lapse of the lease, then costs are impaired. 
As part of our periodic impairment review, we review undeveloped leasehold costs for potential impairment 
and if, based upon a change in exploration plans, timing and extent of development activities, availability of 
capital and suitable rig and drilling equipment, resource potential, comparative economics, changing 
regulations and/or other factors, an impairment is indicated, we will record impairment expense related to the 
respective lease.

When we have allocated fair values to a significant unproved property (probable and/or possible reserves) as 
the result of a business combination or other purchase of proved and/or unproved properties, we use a future 
cash flows analysis to assess the property for impairment. Cash flows used in the impairment analysis are 
determined based upon management’s estimates of probable and possible reserves, future commodity prices, 
and future costs to produce the reserves. Probable reserves are defined in SEC Regulation S-X, Rule 4-10(a)
(18) as those additional reserves that are less certain to be recovered than proved reserves but which, together 
with proved reserves, are more likely than not (generally having more than 50% probability) to be recovered. 
Possible reserves are defined in SEC Regulation S-X, Rule 4-10(a)(17) as those additional reserves that are 
less certain to be recovered than probable reserves. Estimates of cash flows related to probable and possible 
reserves are reduced by additional risk-weighting factors. 

If undiscounted future net cash flows are less than the carrying value of the property, indicating impairment, 
the cash flows are discounted using a risk-adjusted rate and compared to the carrying value to determine the 
amount of the impairment loss to record.  

If proved reserves are discovered, the related acquisition costs are reclassified to proved properties.  We 
assess proved crude oil and natural gas properties and other investments for possible impairment whenever 
events or circumstances indicate that the recorded carrying values of the assets may not be recoverable. We 
recognize an impairment loss as a result of an event that causes us to consider the possibility that impairment 
may have occurred and when the estimated undiscounted future net cash flows from a property or other 
investment are less than the carrying value. 

If impairment is indicated, the carrying values are written down to fair value, which, in the absence of 
comparable market data, is estimated using a discounted cash flow method. In our cash flow method, cash 
flows are discounted using a risk-adjusted rate and compared to the carrying value for determining the 
amount of the impairment loss to record. Estimated future net cash flows are based on management’s 
expectations for the future and include estimates of crude oil, natural gas and NGL reserves and future 
commodity prices, adjusted for location and quality differentials, revenues and operating and development 
costs. 

•  Exploratory well costs - Costs associated with drilling an exploratory well may be capitalized temporarily, or 

“suspended,” pending a determination of whether crude oil or natural gas have been discovered and can be estimated 
with reasonable certainty to be economically producible. We carry the costs of an exploratory well as an asset if we 
have found a sufficient quantity of reserves to justify its completion as a producing well and as long as we are making 
sufficient progress assessing the reserves and the economic and operating viability of the project. For certain capital-
intensive Gulf of Mexico or international projects, it may take several years to evaluate the future potential of the 
exploratory well and make a determination of its economic viability. Our ability to move forward on a project may be 
dependent on gaining access to transportation or processing facilities or obtaining permits and government or partner 
approval, the timing of which is beyond our control. In such cases, exploratory well costs remain suspended as long as 

80

 
 
Table of Contents
Index to Financial Statements

we are actively pursuing access to necessary facilities and submitting requests for permits and approvals and believe 
they will be obtained.

•  Development well costs - Costs associated with drilling a development well to obtain access to and to produce proved 

reserves are capitalized.  Development well costs are included in our periodic proved property impairment test noted 
above.

These costs, along with those for support equipment and facilities, are amortized to expense by the unit-of-production method 
on a field-by-field basis, based on total proved crude oil, natural gas and NGL reserves, as estimated by our qualified petroleum 
engineers. Costs of certain gathering facilities or processing plants serving a number of properties or used for third-party 
processing are depreciated using the straight-line method over the useful lives of the assets. 

The alternative method of accounting for crude oil and natural gas properties is the full cost method. Under the full cost 
method, geological and geophysical costs, exploratory dry holes and delay rentals are capitalized as assets and charged to 
earnings in future periods as a component of DD&A expense. In addition, under the full cost method, capitalized costs are 
accumulated in pools on a country-by-country basis. DD&A is computed on a country-by-country basis, and capitalized costs 
are limited on the same basis through the application of a ceiling test. 

Judgment and Uncertainties   The determination of the carrying value of our oil and gas properties includes assessment of 
impairment and the calculation of amortization expense. 

In determination of whether significant unproved crude oil and natural gas properties are impaired, we apply a significant 
amount of judgment in assessing entity-specific assumptions and assumptions related to the future economic environment, as 
well as potential impacts of the political and regulatory climate on future development activity. We also consider numerous 
factors including, but not limited to, current exploration plans, favorable or unfavorable exploration activity on the property 
being evaluated and/or adjacent properties, our geologists' evaluation of the property, and the remaining months in the lease 
term for the property. In addition, impairment assessment involves a high degree of estimation uncertainty as it requires us to 
make assumptions and apply judgment to estimate future cash flows related to proved and unproved reserves. Such 
assumptions include commodity prices, capital spending, production and abandonment costs and reservoir data. Significant 
judgment is involved in estimating these factors, and they include uncertainties. In cases where probable and possible reserves 
cash flows are utilized to assess properties for impairment, we use the same pricing, cost and future production assumptions. 

We apply significant judgment in determining whether sufficient progress has been made in assessing the reserves and the 
economic and operational viability of a project to continue capitalization of the exploratory well costs. Such assessment 
requires consideration of the following factors: commitment of project personnel, costs incurred to assess reserves and potential 
development, assessment process in progress covering economic, legal, political and environmental aspects of potential 
development, existence or active negotiations of agreements with governments and venture partners or sales contracts with 
customers, identification of existing transportation and other infrastructure that is or will be available for the project and other 
factors. Consideration of these factors requires us to make assumptions and apply judgment to assess industry and economic 
conditions, as well as our future drilling and development plans. Future changes in our exploratory and drilling activities or 
economic conditions may result in determination not to pursue certain projects, resulting in future write-offs of the capitalized 
exploratory well costs. 

Calculation of unit-of-production rates is performed on a field-by-field basis and includes estimation of the period-end reserves 
base and production data for each respective field, including estimates of production for non-operated properties. 

Effect if Actual Results Differ from Assumptions   We have not made any material changes in the accounting methodology we 
use to account for our oil and gas properties. We believe the successful efforts method is the most appropriate method to use in 
accounting for our crude oil and natural gas properties because it provides a better representation of our results of operations, 
especially during periods of active exploration. If we had used the full cost method, our financial position and results of 
operations could have been significantly different. 

At December 31, 2017, the net book value of our unproved properties includes significant amounts allocated in previous 
business combinations or acquisitions, including the Clayton Williams Energy Acquisition and the Rosetta Merger. See 
Supplemental Oil and Gas Information (Unaudited) - Capitalized Costs Relating to Oil and Gas Producing Activities. 
Unfavorable revisions to our reserves and/or changes in our exploration and development plans or the economic, political or 
regulatory environment in areas where we operate, or changes in the availability of funds for future activities may result in 
abandonment and impairment of unproved leases and oil and gas properties. During 2017 we recognized undeveloped 
leasehold impairment expense of $62 million primarily attributable to Gulf of Mexico leases. We recorded leasehold 
impairment expense of $93 million in 2016 and $21 million in 2015. 

Impairment assessment incorporates expected future cash flows using expected prices, cost rates and future production. For the 
purpose of impairment testing, we used the five-year strip prices for crude oil and natural gas, with prices subsequent to the 
fifth year held constant as the benchmark price, unless contractual arrangements designate the price to be used, in the 

81

Table of Contents
Index to Financial Statements

undiscounted future net cash flows. Capital and operating costs were estimated assuming 0% escalation. Unfavorable changes 
in these pricing and cost assumptions in the future may result in negative revisions to our reserves and associated cash flows, 
causing us to record impairment of proved oil and gas properties. We recorded total pre-tax (non-cash) impairment charges of 
$70 million in 2017, $92 million in 2016, and $533 million in 2015 for proved oil and gas properties. See Item 8. Financial 
Statements and Supplementary Data - Note 5. Asset Impairments. 

At December 31, 2017, the balance of property, plant and equipment included $520 million of suspended exploratory well 
costs, $510 million of which had been capitalized for a period greater than one year. The wells relating to these suspended costs 
continue to be evaluated by various means, including additional seismic work, drilling additional appraisal wells to confirm the 
size of the hydrocarbon deposit, or evaluating the potential commerciality of the exploratory wells. During 2017, previously 
capitalized exploratory well costs of $65 million were expensed.  See Item 8. Financial Statements and Supplementary Data - 
Note 6. Capitalized Exploratory Well Costs and Undeveloped Leasehold Costs.

Additionally, the carrying value of our oil and gas properties is sensitive to reserves estimates. Unit-of-production rates are 
revised at least once a year or when the reserves estimates are updated due to major revisions or transactions. The change in 
unit-of-production rates will affect the carrying value of our oil and gas properties and DD&A expense. If the estimates of 
proved reserves used in the unit-of-production calculations had been lower by 10% across all properties, 2017 DD&A expense 
would have increased by approximately $210 million. 

Furthermore, a change in groupings of our oil and gas properties for the purpose of the DD&A calculation and impairment 
review could affect the calculation of unit-of-production rates, DD&A expense and determination of impairment.

Asset Retirement Obligations

Description   Our asset retirement obligations (AROs) consist of estimated costs of dismantlement, removal, site reclamation 
and similar activities associated with our oil and gas properties. We recognize the fair value of an ARO liability in the period in 
which it is incurred, which is when we have an existing legal obligation associated with the retirement of our oil and gas 
properties and the obligation can be reasonably estimated.

The associated asset retirement cost is capitalized as part of the carrying cost of the oil and gas asset. In determining the fair 
value of an ARO, we utilize the estimated future cash flows method. The recognition of an ARO requires that management 
make numerous estimates, assumptions and judgments regarding such factors as: the existence of a legal obligation for an 
ARO; estimated probabilities, amounts and timing of settlements; the credit-adjusted risk-free rate to be used; and inflation 
rates. 

In periods subsequent to initial measurement of the ARO, we recognize period-to-period changes in the liability resulting from 
the passage of time and revisions to either the timing or the amount of the original estimate of undiscounted future cash flows. 
Revisions also result in increases or decreases in the carrying cost of the oil and gas asset. Increases in the ARO liability due to 
passage of time impact net income as accretion expense. The related capitalized cost, including revisions thereto, is charged to 
expense through DD&A or exploration expense.

Judgment and Uncertainties   The process for determining the fair value of an ARO requires us to make subjective judgments 
and assumptions concerning field life, timing of abandonment activities, cost structures, future labor rates and heavy equipment 
rental costs, expected inflation rates and changes in the regulatory environment. ARO estimates must be continually revised to 
reflect changes in these factors. Accordingly, we perform a comprehensive review of ARO estimates semi-annually with the 
proposed estimates and changes reflected in June 30 and December 31 period-end financial statements.

Effect if Actual Results Differ from Assumptions   As of December 31, 2017, our consolidated balance sheet includes ARO 
liabilities of $875 million. Changes in the fair value of our ARO balance from prior year included both upward and downward 
revisions primarily due to revised timing and scope of remediation work resulting from assessment of abandonment work 
performed to-date and current cost experience on retirement obligations in the same operational areas. Future changes in rig 
rates, labor rates, inflation and interest rates, timing of settlements, scope of work, technological developments and changes in 
the environmental and regulatory climate may result in revisions to our ARO estimates which can be material to our financial 
position.

For the year ended December 31, 2017, we recorded $47 million of accretion expense in our consolidated statements of 
operations. A 10% increase in our ARO estimate as of December 31, 2017 would have impacted net loss by approximately $4 
million. See Item 8. Financial Statements and Supplementary Data - Note 9. Asset Retirement Obligations.

Purchase Price Allocations and Resulting Goodwill

Description   We occasionally acquire assets and assume liabilities in transactions accounted for as business combinations, such 
as the Clayton Williams Energy Acquisition in 2017 and the Rosetta Merger in 2015. In connection with a purchase business 
combination, the acquiring company must allocate the cost of the acquisition to assets acquired and liabilities assumed, based 
on fair values as of the acquisition date. Deferred taxes must be recorded for any differences between the assigned values and 
82

Table of Contents
Index to Financial Statements

tax bases of assets and liabilities. Any excess of the purchase price over amounts assigned to assets and liabilities is recorded as 
goodwill. The amount of goodwill or gain on bargain purchase recorded in any particular business combination can vary 
significantly depending upon the values attributed to assets acquired and liabilities assumed.

Goodwill is not amortized to earnings but is assessed, at least annually, for impairment at the reporting unit level. A “reporting 
unit” is the level of reporting at which goodwill is tested for impairment. A reporting unit is an operating segment or one level 
below an operating segment. Our policy is to conduct a qualitative goodwill impairment assessment by examining relevant 
events and circumstances which could have a negative impact on our goodwill, such as: macroeconomic conditions; industry 
and market conditions, including commodity prices; cost factors; overall financial performance; reporting unit dispositions and 
acquisitions; and other relevant entity-specific events.

If, after assessing the totality of events or circumstances described above, we determine that it is more likely than not that the 
fair value of our Texas reporting unit is less than its carrying amount, the two-step goodwill test is performed. The two-step 
goodwill impairment test is also performed whenever events or changes in circumstances indicate that the carrying value may 
not be recoverable. If, after performing the two-step goodwill test, it is determined that the carrying value of goodwill is 
impaired, the amount of goodwill is reduced and a corresponding charge is made to earnings in the period in which the 
goodwill is determined to be impaired.

The two-step impairment test is used to identify potential goodwill impairment and measure the amount of a goodwill 
impairment loss to be recognized. The first step of the goodwill impairment test, used to identify potential impairment, 
compares the fair value of a reporting unit with its carrying amount, including goodwill. If the fair value of the reporting unit 
exceeds its carrying amount, goodwill is not considered to be impaired, and the second step of the test is not required. If 
necessary, the second step of the impairment test, used to measure the amount of impairment loss, compares the implied fair 
value of reporting unit goodwill with the carrying amount of that goodwill. If the carrying amount of reporting unit goodwill 
exceeds the implied fair value of that goodwill, an impairment loss is recognized in an amount equal to the excess.

Judgment and Uncertainties   Preparing a purchase price allocation requires estimating the fair values of assets acquired and 
liabilities assumed in a business combination, and we must make various assumptions. The most significant assumptions relate 
to the estimated fair values assigned to proved and unproved crude oil and natural gas properties. In most cases, sufficient 
market data is not available regarding the fair values of proved and unproved properties, and we prepare estimates of such 
properties based on the fair value of associated crude oil, natural gas and NGL reserves utilizing the income approach.

The primary assumptions used to arrive at estimates of future net cash flows are reserves quantities, commodity prices, and 
capital and operating costs. For estimated proved reserves, the future net cash flows are discounted using a market-based 
weighted average cost of capital rate determined appropriate at the time of the acquisition. The market-based weighted average 
cost of capital rate is subjected to additional project-specific risking factors. To compensate for the inherent risk of estimating 
and valuing unproved reserves, the discounted future net cash flows of probable and possible reserves are reduced by additional 
risk-weighting factors.

Estimated deferred taxes are based on available information concerning the tax bases of assets acquired and liabilities assumed 
and loss carryforwards at the acquisition date, although such estimates may change in the future as additional information 
becomes known.

Resulting goodwill from a purchase price allocation must be assessed for impairment. We perform our annual goodwill 
impairment test at the end of the third quarter of each year unless events or circumstances trigger the need for an interim 
impairment test.

The first step of the impairment test requires management to make estimates regarding the fair value of the reporting unit to 
which goodwill has been assigned. If it is necessary to determine the fair value of the Texas reporting unit, we use a 
combination of the income approach and the market approach. 

• 

Income Approach   Under the income approach, the fair value of the Texas reporting unit is estimated based on the 
present value of expected future cash flows. The income approach is dependent on a number of factors, including 
estimates of forecasted revenue and operating costs and proved reserves, as well as the success of future exploration 
for and development of unproved reserves, discount rates and other variables. Negative revisions of estimated reserves 
quantities, increases in future cost estimates, divestiture of a significant component of the reporting unit, or sustained 
decreases in crude oil or natural gas prices could lead to a reduction in expected future cash flows and possibly an 
impairment of all or a portion of goodwill in future periods. Key assumptions used in the discounted cash flow model 
described above include estimated quantities of crude oil, natural gas and NGL reserves, including both proved 
reserves and risk-adjusted unproved reserves; estimates of market prices considering forward commodity price curves 
as of the measurement date; and estimates of operating, administrative and capital costs adjusted for inflation. We 
discount the resulting future cash flows using a peer group based weighted average cost of capital. 

83

Table of Contents
Index to Financial Statements

•  Market Approach   Under the market approach, we estimate the fair value of the Texas reporting unit by comparison to 
similar businesses whose securities are actively traded in the public market The market approach requires management 
to make certain judgments about the selection of comparable companies and/or comparable recent company and asset 
transactions and transaction premiums, thereby creating a group of guideline public companies or transactions, or a 
peer group, that are engaged in similar operations with comparable risks and returns as our reporting unit.  

We use the peer group multiple method for the market approach. Market multiples represent market estimates of fair 
value based on selected financial metrics. We use earnings before interest, taxes, DD&A and exploration expense (also 
known as EBITDAX) as our financial metric as we believe it more accurately compares companies using successful 
efforts and full cost accounting methods, both of which are in our peer group. Determination of fair value under the 
income approach and the market approach is subject to a high degree of estimation uncertainty as it requires us to 
make assumptions and apply judgment to various parameters that are sensitive to industry, market and economic 
conditions. The change in these factors in the future may have a negative impact on estimated future cash flows and 
the enterprise value of our reporting unit, which could result in future goodwill impairment.

Effect if Actual Results Differ from Assumptions   The resulting estimated fair values assigned to assets acquired and liabilities 
assumed in a purchase price allocation can have a significant effect on results of operations in the future. A higher fair value 
assigned to a property results in higher DD&A expense, which results in lower net earnings. Fair values are based on estimates 
of future commodity prices, reserves quantities, operating expenses and development costs. This increases the likelihood of 
impairment if future commodity prices or reserves quantities are lower than those originally used to determine fair value, or if 
future operating expenses or development costs are higher than those originally used to determine fair value. Impairment would 
have no effect on cash flows, but would result in a decrease in net income for the period in which the impairment is recorded. 
See Item 8. Financial Statements and Supplementary Data - Note 3. Clayton Williams Energy Acquisition and Item 8. Financial 
Statements and Supplementary Data - Note 4. Acquisitions, Divestitures and Merger.

As of December 31, 2017, our consolidated balance sheet includes goodwill of $1.3 billion, resulting from the Clayton 
Williams Energy Acquisition in second quarter 2017. All of our recorded goodwill is assigned to the Texas reporting unit.

We conducted a qualitative and quantitative goodwill impairment assessment as of September 30, 2017 and based on the results 
of our goodwill impairment test, we concluded that our goodwill at September 30, 2017 was not impaired as the fair value of 
our Texas reporting unit was in excess of its respective net book value, including goodwill. While not required under 
Accounting Standards Codification (“ASC”) 350 “Intangibles - Goodwill and Other", we also performed a reconciliation of the 
determined enterprise fair value as compared to our total company market capitalization. From this additional analysis, we have 
concluded that the determination of the enterprise fair value closely aligns with our market capitalization.

The estimates used in our goodwill impairment test do not constitute forecasts or projections of future results of operations, but 
are rather estimates and assumptions based on historical results and assessments of macroeconomic factors affecting the Texas 
reporting unit as of the valuation date. We believe that our estimates and assumptions are reasonable, but they are subject to 
change from period to period. Actual results of operations and other factors will likely differ from the estimates used in our 
discounted cash flow valuation and it is possible that differences could be material. Although we base the fair value estimate of 
the Texas reporting unit on assumptions we believe to be reasonable, those assumptions are inherently unpredictable and 
uncertain and actual results could differ from the estimate. In the event of a prolonged industry downturn, commodity prices 
again become depressed or decline, thereby causing the fair value of the Texas reporting unit to decline, which could result in 
an impairment of goodwill. 

If, in the future, we dispose of a reporting unit or a portion of a reporting unit that constitutes a business, we will include 
goodwill associated with that business in the carrying amount of the business in order to determine the gain or loss on disposal. 
The amount of goodwill allocated to the carrying amount of a business can significantly impact the amount of gain or loss 
recognized on the sale of that business. The amount of goodwill to be included in that carrying amount will be based on the 
relative fair value of the business to be disposed of and the portion of the reporting unit that will be retained. See Item 8. 
Financial Statements and Supplementary Data - Note 3. Clayton Williams Energy Acquisition.

Exit Costs 

Description   We account for exit costs in accordance with ASC 420 - Exit or Disposal Cost Obligations, which requires that a 
liability for a cost associated with an exit or disposal activity be recognized at fair value in the period in which the liability is 
incurred. Further, a liability for costs that will continue to be incurred under a contract for its remaining term without economic 
benefit to the entity shall be recognized at the “cease-use date,” which is defined as the date the entity ceases using the right 
conveyed by the contract, for example, the right to use a leased property or to receive future goods or services.

During second quarter 2017, in connection with our Marcellus Shale upstream divestiture, we accrued a liability of $41 million, 
discounted, for exit costs related to our commitment under a retained firm transportation contract and charged the amount to 
loss on Marcellus Shale upstream divestiture in our consolidated statements of operations.

84

Table of Contents
Index to Financial Statements

In addition, we have retained other Marcellus Shale firm transportation contracts, relating to pipeline projects that either were 
recently placed in service in late 2017/early 2018 or are not yet commercially available to us. These projects that are not yet 
available will undergo construction and, as these projects become commercially available to us, we will assess, based upon the 
facts and circumstances, the recognition of any potential exit cost liabilities. If we determine that we will not utilize a portion, 
or all, of the contracted pipeline capacity, we will accrue a liability, at fair value, for the amount of the estimated remaining 
financial commitment and include the related expense in operating expense in our consolidated statements of operations.

Any additional exit cost liability will be initially recorded at fair value, and, in periods subsequent to initial measurement, 
changes to the liability, including changes resulting from revisions to either the timing or the amount of estimated cash flows 
over the future contract period, will be recognized as an adjustment to the liability in the period of the change.

Judgment and Uncertainties   We are required to make significant judgments and estimates regarding the timing and amount of 
recognition of any additional exit cost liabilities, taking into consideration our commercialization activities and/or the potential 
occurrence of a cease-use date. We must consider, among other factors, the following:

• 

• 

• 

• 

the status of negotiations with counterparties regarding partial or permanent release of our contract commitments;

the status of FERC approval of prospective pipeline projects;

the timing of commercial availability of approved pipelines upon completion of construction; and

the likelihood of capacity utilization through purchase of third party gas, which would reduce unutilized volume 
commitments.

Additionally, any subsequent changes in interest rates and/or credit risk will affect the discount rate used to calculate the 
present value of expected future cash flows associated with our existing contract commitments.

There are inherent uncertainties surrounding the recording of exit cost liabilities, and in future periods, a number of factors 
could significantly change our estimate of such obligations or result in recognition of additional liability

Effect if Actual Results Differ from Assumptions   As of December 31, 2017 our financial commitment associated with 
Marcellus Shale firm transportation contracts was approximately $1.4 billion, undiscounted. We are currently engaged in 
actions to commercialize and address these remaining commitments, which would reduce our undiscounted financial 
commitment. We cannot guarantee our commercialization efforts will be successful, and we may recognize substantial future 
liabilities, at fair value, for the net amount of the estimated remaining commitments under these contracts, with the offsetting 
charge reducing our earnings. See Item 8. Financial Statements and Supplementary Data -  Note 17. Commitments and 
Contingencies.

Income Tax Expense and Deferred Tax Assets

Description   We are subject to income and other taxes in numerous taxing jurisdictions worldwide. For financial reporting 
purposes, we provide taxes at rates applicable for the appropriate tax jurisdictions. Estimates of amounts of income tax to be 
recorded involve interpretation of complex tax laws, including the recently enacted Tax Cuts and Jobs Act, as well as 
assessment of the effects of foreign taxes on domestic taxes, and estimates regarding the timing and amounts of future 
repatriation of earnings from controlled foreign corporations.

Our consolidated balance sheets include deferred tax assets. Deferred tax assets arise when expenses are recognized in the 
financial statements before they are recognized in the tax returns or when income items are recognized in the tax returns before 
they are recognized in the financial statements. Deferred tax assets also arise when operating losses or tax credits are available 
to offset tax payments due in future years. Ultimately, realization of a deferred tax asset depends on the existence of sufficient 
taxable income within the future periods to absorb future deductible temporary differences, loss carryforwards or credits. 

In assessing the realizability of deferred tax assets, management must consider whether it is more likely than not that some 
portion or all of the deferred tax assets will not be realized.

Management considers all available evidence (both positive and negative) in determining whether a valuation allowance is 
required. Such evidence includes the scheduled reversal of deferred tax liabilities, projected future taxable income and tax 
planning strategies in making this assessment, and judgment is required in considering the relative weight of negative and 
positive evidence. We continue to monitor facts and circumstances in the reassessment of the likelihood that operating loss 
carryforwards, credits and other deferred tax assets will be utilized prior to their expiration. As a result, we may determine, and 
we have determined in the past, that a deferred tax asset valuation allowance should be established.

Judgment and Uncertainties   In assessing facts and circumstances surrounding realizability of our deferred tax assets we are 
required to apply judgment to determine the weight of both positive and negative evidence in order to conclude whether the 
valuation allowance is necessary relative to net operating loss carryforwards and other deferred tax assets.

85

Table of Contents
Index to Financial Statements

In determining whether a valuation allowance is required for our deferred tax asset balances, we consider, among other factors, 
current financial position, results of operations, projected future taxable income, tax planning strategies and new tax legislation. 
Significant judgment is involved in this determination as we are required to make assumptions about future commodity prices, 
projected production, development activities, profitability of future business strategies and forecasted economics in the oil and 
gas industry. Additionally changes in the effective tax rate resulting from changes in tax law and our level of earnings may limit 
utilization of deferred tax assets and will affect valuation of deferred tax balances in the future.

Effect if Actual Results Differ from Assumptions   As of December 31, 2017, our US federal income tax net operating loss 
carryforwards totaled approximately $3.2 billion and foreign net operating loss carryforwards were $662 million. The deferred 
tax asset associated with our federal and foreign net operating loss carryforwards was approximately $672 million and $187 
million, respectively, classified, net, in our consolidated balance sheet within noncurrent deferred income tax liability balance. 
We currently have a valuation allowance on the deferred tax assets associated with foreign loss carryforwards and foreign tax 
credits. The valuation allowance on foreign loss carryforwards totaled $183 million in 2017 and $242 million in 2016. The 
changes to the valuation allowance for the loss carryforwards between periods was attributable to the offset of the valuation 
allowance against the NOL in a jurisdiction in which we are no longer active. Deemed foreign tax credits of $164 million were 
recognized along with the additional taxable income associated with the transition tax. A full valuation allowance of $366 
million has been recorded against all foreign tax credits based on current interpretation of US Tax Reform law and the expected 
future utilization of net operating loss carryforwards. Any increase or decrease in a deferred tax asset valuation allowance 
would impact net income through offsetting changes in income tax expense, which could have a negative impact on our 
financial position and results of operations. See Item 8. Financial Statements and Supplementary Data - Note 11. Income Taxes.

Item 7A.  Quantitative and Qualitative Disclosures About Market Risk

Commodity Price Risk

Derivative Instruments Held for Non-Trading Purposes   We are exposed to commodity price risk in the normal course of 
business operations. Due to commodity price volatility, we may use derivative instruments as a means of managing our 
exposure to price changes.

At December 31, 2017, we had various open commodity derivative instruments related to global crude oil and domestic natural 
gas. Changes in fair value of commodity derivative instruments are reported in earnings in the period in which they occur. Our 
open commodity derivative instruments were in a net liability position at December 31, 2017 with a fair value of $71 million. 
Based on the December 31, 2017 published commodity futures price curves for the underlying commodities, a hypothetical 
price increase of 10% per Bbl for crude oil would increase the fair value of our net commodity derivative liability by 
approximately $146 million. A hypothetical price increase of 10% per MMBtu for natural gas would increase the fair value of 
our net commodity derivative liability by approximately $5 million. 

Our derivative instruments are executed under master agreements which allow us to net settle by counterparty. Net settlements 
take into account deferred premiums we have agreed to pay for put options. In addition, in the event of default, these master 
agreements allow us to elect early termination of all contracts with the defaulting counterparty. If we choose to elect early 
termination, all asset and liability positions with the defaulting counterparty would be net cash settled at the time of election. 
None of our counterparty agreements contain margin requirements. 

Even with certain hedging arrangements in place to mitigate the effect of commodity price volatility, our 2018 revenues and 
results of operations could be adversely affected if commodity prices were to decline. See Item 1A. Risk Factors – Commodity 
hedging transactions may limit our potential gains or fail to protect us from declines in commodity prices and Item 8. Financial 
Statements and Supplementary Data –  Note 8.  Derivative Instruments and Hedging Activities.

Interest Rate Risk

Changes in interest rates affect the amount of interest we pay on borrowings under our credit facilities and the amount of 
interest we earn on our short-term investments. 

At December 31, 2017, we had approximately $6.5 billion (excluding capital lease and other obligations) of long-term debt 
outstanding. Of this amount, approximately $6.3 billion was fixed-rate debt, with a weighted average interest rate of 5.04% at 
December 31, 2017. Although near term changes in interest rates may affect the fair value of our fixed-rate debt, they do not 
expose us to the risk of earnings or cash flow loss. See Item 8. Financial Statements and Supplementary Data – Note 10.  Long-
Term Debt.

We are also exposed to interest rate risk related to our interest-bearing cash and cash equivalents balances and amounts 
outstanding under our credit facilities. As of December 31, 2017, our cash and cash equivalents totaled approximately $675 
million, approximately 59% of which was invested in money market funds and short-term investments with major financial 
institutions. A change in the interest rate applicable to our short term investments or amounts outstanding under our credit 
facilities would have a de minimis impact on our earnings and cash flows. We currently have no interest rate derivative 

86

Table of Contents
Index to Financial Statements

instruments outstanding. However, we may enter into interest rate derivative instruments in the future if we determine that it is 
necessary to invest in such instruments in order to mitigate our interest rate risk.

Foreign Currency Risk

The US dollar is considered the functional currency for each of our international operations. Substantially all of our 
international crude oil, natural gas and NGL production is sold pursuant to US dollar denominated contracts. Transactions, such 
as operating costs and administrative expenses that are paid in a foreign currency, are remeasured into US dollars and recorded 
in the financial statements at prevailing currency exchange rates. Certain monetary assets and liabilities, for example certain 
local working capital items, are denominated in a foreign currency and remeasured into US dollars. A reduction in the value of 
the US dollar against currencies of other countries in which we have material operations could result in the use of additional 
cash to settle operating, administrative, and tax liabilities. This risk may be mitigated to the extent commodity prices increase in 
response to a devaluation of the US dollar.

Net foreign transaction (gains) losses were de minimis for 2017, 2016 and 2015. Foreign transaction (gains) losses are included 
in other (income) expense, net in the consolidated statements of operations.

We currently have no foreign currency derivative instruments outstanding. However, we may enter into foreign currency 
derivative instruments (such as forward contracts, costless collars or swap agreements) in the future if we determine that it is 
necessary to invest in such instruments in order to mitigate our foreign currency exchange risk.

87

Table of Contents
Index to Financial Statements

Item 8.  Financial Statements and Supplementary Data

INDEX TO FINANCIAL STATEMENTS

Consolidated Financial Statements of Noble Energy, Inc.

Management’s Report on Internal Control over Financial Reporting....................................................................................

89

Report of Independent Registered Public Accounting Firm (Financial Statements) .............................................................

90

Report of Independent Registered Public Accounting Firm (Internal Control over Financial Reporting) ............................

91

Consolidated Statements of Operations for Each of the Years in the Three-year Period Ended December 31, 2017 ...........

92

Consolidated Statements of Comprehensive Income (Loss) for Each of the Years                                                                        
93
in the Three-year Period Ended December 31, 2017 .............................................................................................................

Consolidated Balance Sheets as of December 31, 2017 and 2016.........................................................................................

94

Consolidated Statements of Cash Flows for Each of the Years in the Three-year Period Ended December 31, 2017 ..........

95

Consolidated Statements of Shareholders’ Equity for Each of the Years                                                                             
in the Three-year Period Ended December 31, 2017 .............................................................................................................

96

Notes to Consolidated Financial Statements

Note 1. Summary of Significant Accounting Policies .........................................................................................................
Note 2. Additional Financial Statement Information...........................................................................................................
Note 3. Clayton Williams Energy Acquisition.....................................................................................................................
Note 4. Acquisitions, Divestitures, and Merger ...................................................................................................................
Note 5. Asset Impairments...................................................................................................................................................
Note 6.  Capitalized Exploratory Well Costs and Undeveloped Leasehold Costs...............................................................
Note 7. Equity Method Investments ....................................................................................................................................
Note 8. Derivative Instruments and Hedging Activities ......................................................................................................
Note 9. Asset Retirement Obligations..................................................................................................................................
Note 10. Long-Term Debt....................................................................................................................................................
Note 11. Income Taxes.........................................................................................................................................................
Note 12. Stock-Based and Other Compensation Plans........................................................................................................
Note 13. Fair Value Measurements and Disclosures ...........................................................................................................
Note 14. Segment Information.............................................................................................................................................
Note 15. Concentration of Risk ...........................................................................................................................................
Note 16. Additional Shareholders' Equity Information .......................................................................................................
Note 17. Commitments and Contingencies .........................................................................................................................

97
105
107
109
112
113
115
116
119
120
122
126
130
132
135
136
137

Supplemental Oil and Gas Information (Unaudited) .............................................................................................................

139

Supplemental Quarterly Financial Information (Unaudited) .................................................................................................

152

88

 
 
Table of Contents
Index to Financial Statements

Management’s Report on Internal Control over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal control over financial reporting. Our internal 
control over financial reporting is a process designed under the supervision of our Chief Executive Officer and Chief Financial 
Officer to provide reasonable assurance regarding the reliability of financial reporting and the preparation of consolidated 
financial statements for external purposes in accordance with accounting principles generally accepted in the United States of 
America. 

Because of its inherent limitations, internal control over financial reporting may not detect or prevent misstatements. 
Projections of any evaluation of the effectiveness to future periods are subject to the risk that controls may become inadequate 
because of changes in conditions, or that the degree of compliance with the policies or processes may deteriorate. 

As of December 31, 2017, our management assessed the effectiveness of our internal control over financial reporting based on 
the criteria for effective internal control over financial reporting established in Internal Control – Integrated Framework 
(2013), issued by the Committee of Sponsoring Organizations of the Treadway Commission. Based on the assessment, 
management determined that we maintained effective internal control over financial reporting as of December 31, 2017, based 
on those criteria.

KPMG LLP, the independent registered public accounting firm that audited our consolidated financial statements included in 
this Annual Report on Form 10-K, has issued an attestation report on the effectiveness of internal control over financial 
reporting as of December 31, 2017 which is included herein.

Noble Energy, Inc.

89

 
 
Table of Contents
Index to Financial Statements

Report of Independent Registered Public Accounting Firm

To the Board of Directors and Stockholders
Noble Energy, Inc.:

Opinion on the Consolidated Financial Statements

We have audited the accompanying consolidated balance sheets of Noble Energy, Inc. and subsidiaries (the “Company”) as of 
December 31, 2017 and 2016, the related consolidated statements of operations, comprehensive income (loss), shareholders’ 
equity, and cash flows for each of the years in the three-year period ended December 31, 2017, and the related notes 
(collectively, the “consolidated financial statements”).  In our opinion, the consolidated financial statements present fairly, in all 
material respects, the financial position of the Company as of December 31, 2017 and 2016, and the results of its operations 
and its cash flows for each of the years in the three-year period ended December 31, 2017, in conformity with U.S. generally 
accepted accounting principles.  

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) 
(“PCAOB”), the Company’s internal control over financial reporting as of December 31, 2017, based on criteria established in 
Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway 
Commission, and our report dated February 20, 2018 expressed an unqualified opinion on the effectiveness of the Company’s 
internal control over financial reporting.

Basis for Opinion

These consolidated financial statements are the responsibility of the Company’s management. Our responsibility is to express 
an opinion on these consolidated financial statements based on our audits.  We are a public accounting firm registered with the 
PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws 
and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB. 

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the 
audit to obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement, 
whether due to error or fraud.  Our audits included performing procedures to assess the risks of material misstatement of the 
consolidated financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such 
procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the consolidated financial 
statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, 
as well as evaluating the overall presentation of the consolidated financial statements. We believe that our audits provide a 
reasonable basis for our opinion.

/s/ KPMG LLP

We have served as the Company’s auditor since 2002.

Houston, Texas

February 20, 2018

90

Table of Contents
Index to Financial Statements

Report of Independent Registered Public Accounting Firm

To the Board of Directors and Stockholders
Noble Energy, Inc.:

Opinion on Internal Control Over Financial Reporting 

We have audited Noble Energy, Inc.’s and subsidiaries’ (the “Company”) internal control over financial reporting as of 
December 31, 2017, based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee 
of Sponsoring Organizations of the Treadway Commission. In our opinion, the Company maintained, in all material respects, 
effective internal control over financial reporting as of December 31, 2017, based on criteria established in Internal Control - 
Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission.  

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) 
(“PCAOB”), the consolidated balance sheets of the Company as of December 31, 2017 and 2016, the related consolidated 
statements of operations, comprehensive income (loss), shareholders’ equity, and cash flows  for each of the years in the three-
year period ended December 31, 2017, and the related notes (collectively, the “consolidated financial statements”), and our 
report dated February 20, 2018 expressed an unqualified opinion on those consolidated financial statements.

Basis for Opinion 

The Company’s management is responsible for maintaining effective internal control over financial reporting and for its 
assessment of the effectiveness of internal control over financial reporting, included in the accompanying management’s report 
on internal controls over financial reporting. Our responsibility is to express an opinion on the Company’s internal control over 
financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be 
independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and 
regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the 
audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all 
material respects. Our audit of internal control over financial reporting included obtaining an understanding of internal control 
over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating 
effectiveness of internal control based on the assessed risk. Our audit also included performing such other procedures as we 
considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

Definition and Limitations of Internal Control Over Financial Reporting 

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the 
reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally 
accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures 
that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and 
dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit 
preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and 
expenditures of the company are being made only in accordance with authorizations of management and directors of the 
company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or 
disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, 
projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate 
because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Houston, Texas
February 20, 2018

/s/ KPMG LLP

91

Table of Contents
Index to Financial Statements

Noble Energy, Inc.
Consolidated Statements of Operations
(millions, except per share amounts)

Year Ended December 31,

2017

2016

2015

$

4,060

$

3,389

$

196

4,256

1,141

188

2,053

415

2,379

70
—
(188)
6,058
(1,802)

(63)
98

354

—

102

3,491

1,100

925

2,454

399

—

92
—
(103)
4,867
(1,376)

139
(80)
328

9

389
(2,191)
(1,141)
(1,050)
68
(1,118) $

396
(1,772)
(787)
(985)
13
(998) $

3,093

90

3,183

996

488

2,131

396

—

533
779

332

5,655
(2,472)

(501)
—

263
(15)
(253)
(2,219)
222
(2,441)
—
(2,441)

(2.38) $

(2.32) $

(6.07)

469

430

402

Revenues

Oil, Gas and NGL Sales

Income from Equity Method Investees and Other

Total Revenues
Costs and Expenses

Production Expense

Exploration Expense

Depreciation, Depletion and Amortization

General and Administrative

Loss on Marcellus Shale Upstream Divestiture

Asset Impairments
Goodwill Impairment

Other Operating (Income) Expense, Net

Total Operating Expenses

Operating Loss

Other Expense (Income)

(Gain) Loss on Commodity Derivative Instruments

Loss (Gain) on Extinguishment of Debt

Interest, Net of Amount Capitalized

Other Non-Operating Expense (Income), Net

Total Other Expense (Income)

Loss Before Income Taxes

Income Tax (Benefit) Provision
Net Loss Including Noncontrolling Interests

Less: Net Income Attributable to Noncontrolling Interests

Net Loss Attributable to Noble Energy

Net Loss Attributable to Noble Energy per Share of Common Stock

   Basic and Diluted

Weighted Average Number of Shares Outstanding

   Basic and Diluted

$

$

The accompanying notes are an integral part of these financial statements.

92

 
 
 
 
Table of Contents
Index to Financial Statements

Noble Energy, Inc.
Consolidated Statements of Comprehensive Income (Loss)
(millions)

Year Ended December 31,

2017

2016

2015

$

(1,050) $

(985) $

(2,441)

—

—

3
(1)
2
(1,048) $
68
(1,116) $

—

—

3
(1)
2
(983) $
13
(996) $

(11)
4

99
(35)
57
(2,384)
—
(2,384)

Net Loss Including Noncontrolling Interests
Other Items of Comprehensive Loss

Net Change in Mutual Fund Investment

Less Tax Expense

Net Change in Pension and Other

      Less Tax Benefit

Other Comprehensive Income
Comprehensive Loss Including Noncontrolling Interests

Less: Comprehensive Income Attributable to Noncontrolling Interests

Comprehensive Loss Attributable to Noble Energy

$

$

The accompanying notes are an integral part of these financial statements.

93

 
 
 
Table of Contents
Index to Financial Statements

Noble Energy, Inc.
Consolidated Balance Sheets
(millions)

ASSETS

Current Assets

Cash and Cash Equivalents

Accounts Receivable, Net

Other Current Assets

Total Current Assets

Property, Plant and Equipment

Oil and Gas Properties (Successful Efforts Method of Accounting)

Property, Plant and Equipment, Other

Total Property, Plant and Equipment, Gross

Accumulated Depreciation, Depletion and Amortization
Total Property, Plant and Equipment, Net

Goodwill

Other Noncurrent Assets

Total Assets

LIABILITIES AND SHAREHOLDERS’ EQUITY

Current Liabilities

Accounts Payable - Trade

Other Current Liabilities

Total Current Liabilities

Long-Term Debt

Net Deferred Income Tax Liability

Other Noncurrent Liabilities

Total Liabilities

Shareholders’ Equity

Preferred Stock - Par Value $1.00 per share; 4 Million Shares Authorized, None Issued

Common Stock - Par Value $0.01; 1 Billion Shares Authorized; 529 Million and 471
Million Shares Issued, Respectively

Additional Paid in Capital

Accumulated Other Comprehensive Loss

Treasury Stock, at Cost; 39 Million and 38 Million Shares, Respectively

Retained Earnings

Noble Energy Share of Equity

Noncontrolling Interests

Total Equity

Total Liabilities and Equity

The accompanying notes are an integral part of these financial statements.

94

December 31,
2017

December 31,
2016

$

$

$

$

675

748

780

2,203

29,678

879

30,557
(13,055)
17,502

1,310

461

1,180

615

160

1,955

30,355

909

31,264
(12,716)
18,548

—

508

21,476

$

21,011

1,161

$

578

1,739

6,746

1,127

1,245

736

742

1,478

7,011

1,819

1,103

10,857

11,411

—

5

8,438
(30)
(725)
2,248

9,936

683

10,619

$

21,476

$

—

5

6,450
(31)
(692)
3,556

9,288

312

9,600

21,011

 
 
 
Table of Contents
Index to Financial Statements

Noble Energy, Inc.
Consolidated Statements of Cash Flows
(millions)

Cash Flows From Operating Activities

Net Loss Including Noncontrolling Interests
Adjustments to Reconcile Net Loss to Net Cash Provided by Operating Activities

$ (1,050) $

(985) $ (2,441)

Year Ended December 31,

2017

2016

2015

Depreciation, Depletion and Amortization
Asset Impairments
Loss on Marcellus Shale Upstream Divestiture
Goodwill Impairment
Dry Hole Cost
Deferred Income Taxes
(Gain) Loss on Commodity Derivative Instruments
Net Cash Received in Settlement of Commodity Derivative Instruments
Gain on Divestitures
Stock Based Compensation
Non-cash Pension Plan Termination Expense
Loss (Gain) on Debt Extinguishment
Undeveloped Leasehold Impairment
Expiration and Amortization of Undeveloped Leaseholds
Other Adjustments for Noncash Items Included in Income

Changes in Operating Assets and Liabilities, Net of Assets Acquired and Liabilities Assumed

(Increase) Decrease in Accounts Receivable
Increase (Decrease) in Accounts Payable
(Decrease) Increase in Current Income Taxes Payable
(Decrease) Increase in Other Current Liabilities
Other Operating Assets and Liabilities, Net

Net Cash Provided by Operating Activities
Cash Flows From Investing Activities

Additions to Property, Plant and Equipment
Proceeds from Divestitures
Clayton Williams Energy Acquisition, Net of Cash Received
Other Acquisitions
Marcellus Shale Acreage Exchange Consideration
Other

Net Cash Used in Investing Activities
Cash Flows From Financing Activities

Dividends Paid, Common Stock
Proceeds from Issuance of Noble Energy Common Stock, Net of Offering Costs
Proceeds from Revolving Credit Facility
Repayment of Revolving Credit Facility
Repayment of Clayton Williams Energy Long-term Debt
Proceeds from Term Loan Facility
Repayment of Term Loan Facility
Proceeds from Issuance of Senior Notes, Net
Repayment of Senior Notes
Proceeds from Noble Midstream Services Revolving Credit Facility
Repayment of Noble Midstream Services Revolving Credit Facility
Proceeds from Issuance of Noble Midstream Partners Common Units, Net of Offering Costs
Other

Net Cash (Used in) Provided By Financing Activities
(Decrease) Increase in Cash and Cash Equivalents
Cash and Cash Equivalents at Beginning of Period
Cash and Cash Equivalents at End of Period

 The accompanying notes are an integral part of these financial statements. 

95

2,053
70
2,379
—
9
(1,227)
(63)
13
(326)
104
—
98
62
—
(21)

(171)
248
(36)
(101)
(90)
1,951

(2,649)
2,073
(616)
(327)
—
(87)
(1,606)

(190)
—
1,585
(1,355)
(595)
—
(550)
1,086
(1,114)
325
(240)
312
(114)
(850)
(505)
1,180
675

$

2,454
92
—
—
579
(984)
139
569
(238)
77
—
(80)
93
55
40

(164)
(111)
(32)
(63)
(90)
1,351

2,131
533
—
779
266
116
(501)
1,009
—
86
82
—
21
92
18

453
(364)
(94)
(70)
(54)
2,062

(1,541)
1,241
—
—
(213)
82
(431)

(172)
—
—
—
—
1,400
(850)
—
(1,383)
—
—
299
(62)
(768)
152
1,028
$ 1,180

(2,979)
151
—
—
—
(43)
(2,871)

(291)
1,112
—
(70)
—
—
—
—
(12)
—
—
—
(85)
654
(155)
1,183
$ 1,028

 
 
 
 
Table of Contents
Index to Financial Statements

Noble Energy, Inc.
Consolidated Statements of Shareholders' Equity 
(millions)

Attributable to Noble Energy

Common
Stock 

Additional
Paid in
Capital

Accumulated 
Other
Comprehensive
Loss

Treasury
Stock at
Cost

Retained
Earnings

Non-
controlling
Interests

Total
Equity

December 31, 2014

$

Net Loss

Rosetta Merger

Stock-based Compensation

Exercise of Stock Options

Dividends (72 cents per share)

Issuance of Shares of Noble
Energy Common Stock to
Public, Net of Offering Costs

Net Change in Other
December 31, 2015

Net (Loss) Income

Stock-based Compensation

Exercise of Stock Options

Dividends (40 cents per share)

Issuance of Noble Midstream
Partners Common Units, Net of
Offering Costs

Net Change in Other
December 31, 2016

Net (Loss) Income

Clayton Williams Energy
Acquisition

Stock-based Compensation

Exercise of Stock Options

Dividends (40 cents per share)
Issuance of Noble Midstream
Partners Common Units, Net of
Offering Costs
Distributions to Noncontrolling
Interest Owners

Net Change in Other
December 31, 2017

$

$

$

4

—

1

—

—

—

—

—
5

—

—

—

—

—

—

5

—

—

—

—

—

—

—

—

5

$

3,624

$

—

1,528

86

8

—

1,112

2
6,360

$

$

—

68

24

—

—

(2)

$

6,450

$

—

1,876

100

10

—

—

—

2

$

8,438

$

(90) $
—

(671) $
—

7,458
(2,441)
—

—

—
(291)

—

—
4,726
(998)
—

—
(172)

—

—

—

—

—
(17)
(688) $
—

—

—

—

—
(4)
(692) $
—

—

—

3,556
(1,118)

(25)
—

—

—

—

—
(8)
(725) $

—

—

—
(190)

—

—

—

—

—

—

—

—

57
(33) $
—

—

—

—

—

2
(31) $
—

—

—

—

—

—

—

1
(30) $

— $ 10,325
— (2,441)
1,529
—

—

—

—

86

8
(291)

—

1,112

42
—
— $ 10,370
(985)
68

13

—

—

—

299

—

312

68

—

—

—

—

24
(172)

299
(4)
$ 9,600
(1,050)

1,851

100

10
(190)

312

312

(28)
19

(28)
14

2,248

683

$ 10,619

The accompanying notes are an integral part of these financial statements.

96

 
Table of Contents

Index to Financial Statements

Noble Energy, Inc.
Notes to Consolidated Financial Statements

Note 1.  Summary of Significant Accounting Policies 

General   Noble Energy, Inc. (Noble Energy, we or us) is a leading independent energy company engaged in worldwide crude 
oil and natural gas exploration and production. Our historical operating areas include: US onshore, primarily the DJ Basin, 
Delaware Basin, Eagle Ford Shale and Marcellus Shale (until June 2017); US offshore Gulf of Mexico; Eastern Mediterranean; 
and West Africa. Our Midstream segment owns, operates, develops and acquires domestic midstream infrastructure assets with 
current focus areas being the DJ and Delaware Basins.

Basis of Presentation and Consolidation   Accounting policies used by us and our subsidiaries conform to US GAAP. 
Significant policies are discussed below. Our consolidated accounts include our accounts and the accounts of our wholly-owned 
subsidiaries. All significant intercompany balances and transactions have been eliminated upon consolidation.

Equity Method of Accounting   We use the equity method of accounting for investments in entities that we do not control but 
over which we exert significant influence. Our equity investees own and operate various midstream assets which we consider 
an essential component of our business and a necessary and integral element to our value chain involving the monetization of 
natural gas. With our partners, we engage in joint strategic operational and financial decision making for these entities.

In order to reflect the economics associated with our integrated upstream value chain described above, we include income from 
equity method investees as a component of revenues in our consolidated statements of operations.

We carry equity method investments at our share of net assets of the equity investees plus loans and advances, and include the 
investments in other noncurrent assets in our consolidated balance sheets. Within our consolidated statements of cash flows, 
activity is reflected within cash flows provided by operating activities and cash flows provided by (used in) investing activities. 
Differences in the basis of the investment and the separate net asset value of the investee, if any, are amortized into income over 
the remaining useful life of the underlying assets. Our share of income taxes incurred directly by the equity method investees is 
reported in income from equity method investees and is not included in our income tax provision in our consolidated statements 
of operations. See Note 7.  Equity Method Investments.  

Noncontrolling Interests  In third quarter 2016, Noble Midstream Partners LP (Noble Midstream Partners), a subsidiary of 
Noble Energy, completed its initial public offering of common units. As a result, we present our consolidated financial 
statements with a noncontrolling interest section representing the public's ownership in Noble Midstream Partners. See Note 16. 
Additional Shareholders' Equity Information. 

Consolidated VIE    Noble Energy has determined that the partners with equity at risk in Noble Midstream Partners lack the 
authority, through voting rights or similar rights, to direct the activities that most significantly impact Noble Midstream 
Partners' economic performance; therefore, Noble Midstream Partners is considered a variable interest entity (VIE). Through 
Noble Energy's ownership interest in Noble Midstream GP LLC (the General Partner to Noble Midstream Partners), Noble 
Energy has the authority to direct the activities that most significantly affect economic performance and the obligation to absorb 
losses or the right to receive benefits that could be potentially significant to Noble Midstream Partners. Therefore, Noble 
Energy is considered the primary beneficiary and consolidates Noble Midstream Partners. 

Use of Estimates   The preparation of consolidated financial statements in conformity with US GAAP requires us to make a 
number of estimates and assumptions relating to the reported amounts of assets and liabilities and the disclosure of contingent 
assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses 
during the reporting period.

Estimated quantities of crude oil, natural gas and NGL reserves are the most significant of our estimates. All the reserves data 
included in this Annual Report Form 10-K are estimates. Reservoir engineering is a subjective process of estimating 
underground accumulations of crude oil, natural gas and NGLs. There are numerous uncertainties inherent in estimating 
quantities of proved crude oil, natural gas and NGL reserves. The accuracy of any reserves estimate is a function of the quality 
of available data and of engineering and geological interpretation and judgment. As a result, reserves estimates may be different 
from the quantities of crude oil, natural gas and NGLs that are ultimately recovered. Qualified petroleum engineers in our 
Houston and Denver offices prepare all reserves estimates for our different geographical regions. These reserves estimates are 
reviewed and approved by senior engineering staff and division management with final approval by the Senior Vice President – 
Corporate Development and certain members of senior management. See Supplemental Oil and Gas Information (Unaudited).

Other items subject to estimates and assumptions include the carrying amounts of inventory, property, plant and equipment, 
goodwill, exit costs and asset retirement obligations (AROs), valuation allowances for receivables and deferred income tax 
assets, and valuation of derivative instruments, among others. Management evaluates estimates and assumptions on an ongoing 
basis using historical experience and other factors, including the current economic and commodity price environment. 
The volatility of commodity prices results in increased uncertainty inherent in such estimates and assumptions. Declines in 

97

Table of Contents

Index to Financial Statements

Noble Energy, Inc.
Notes to Consolidated Financial Statements

commodity prices could result in a reduction in our fair value estimates and cause us to perform analyses to determine if our oil 
and gas properties are impaired. As future commodity prices cannot be determined accurately, actual results could differ 
significantly from our estimates. See Supplemental Oil and Gas Information (Unaudited).

Reclassifications

In Note 14. Segment Information, we report a new Midstream segment, established second quarter 2017, and present prior period 
amounts  on  a  comparable  basis.  Certain  other  prior-period  amounts  have  been  reclassified  to  conform  to  the  current  period 
presentation. 

Fair Value Measurements   Fair value measurements are based on a hierarchy which prioritizes the inputs to valuation techniques 
used to measure fair value into three levels. The fair value hierarchy is as follows:

•  Level 1 measurements are fair value measurements which use quoted market prices (unadjusted) in active markets for 

identical assets or liabilities.

•  Level 2 measurements are fair value measurements which use inputs, other than quoted prices included within Level 1, 

which are observable for the asset or liability, either directly or indirectly.

•  Level 3 measurements are fair value measurements which use unobservable inputs.

The fair value hierarchy gives the highest priority to Level 1 measurements and the lowest priority to Level 3 measurements.  
We use Level 1 inputs when available, as Level 1 inputs generally provide the most reliable evidence of fair value. See Note 13.  
Fair Value Measurements and Disclosures.

Cash and Cash Equivalents  For purposes of reporting cash flows, cash and cash equivalents include unrestricted cash on 
hand and investments with original maturities of three months or less at the time of purchase.

Allowance for Doubtful Accounts We routinely assess the recoverability of all material trade and other receivables to 
determine their collectibility. We accrue a reserve on a receivable when, based on management’s judgment, it is probable that a 
receivable will not be collected and the amount of such reserve may be reasonably estimated. 

Inventories  Inventories consist primarily of tubular goods and production equipment used in our oil and gas operations, and 
crude oil produced but not yet sold. Materials and supplies inventories are stated at the lower of cost or net realizable value. The 
cost of crude oil inventory includes production costs and DD&A of oil and gas properties. See Note 2.  Additional Financial 
Statement Information.

Property, Plant and Equipment  Significant accounting policies for our property, plant and equipment are as follows:

Successful Efforts Method  We account for crude oil and natural gas properties under the successful efforts method of 
accounting. Under this method, costs to acquire mineral interests in crude oil and natural gas properties, drill and equip 
exploratory wells that find proved reserves, and drill and equip development wells are capitalized. Capitalized costs of 
producing crude oil and natural gas properties, along with support equipment and facilities, are amortized to expense by the 
unit-of-production method based on proved crude oil, natural gas and NGL reserves on a field-by-field basis, as estimated by 
our qualified petroleum engineers. Our policy is to use quarter-end reserves and add back current period production to compute 
quarterly DD&A expense. Costs of certain gathering facilities or processing plants serving a number of properties or used for 
third-party processing are depreciated using the straight-line method over the useful lives of the assets ranging from three to 
thirty years. Upon sale or retirement of depreciable or depletable property, the cost and related accumulated DD&A are 
eliminated from the accounts and the resulting gain or loss is recognized. Costs related to repair and maintenance activities are 
expensed as incurred.

Property Impairment  For our proved properties, we routinely assess whether impairment indicators arise during any given 
quarter and have processes in place to ensure that we become aware of such indicators. Impairment indicators include, but are 
not limited to, sustained decreases in commodity prices, negative revisions of proved reserves, and increases in development or 
operating costs. In the event that impairment indicators exist, we conduct an impairment test. To that end, we estimate future net 
cash flows expected in connection with the property and compare such future net cash flows to the carrying amount of the 
property to determine if the carrying amount is recoverable. 

When the carrying amount of a property exceeds its estimated undiscounted future net cash flows, the carrying amount is 
reduced to estimated fair value. Fair value may be estimated using comparable market data, a discounted cash flow method, or a 
combination of the two. In the discounted cash flow method, estimated future cash flows are based on management’s 
expectations for the future and include estimates of future crude oil and natural gas production, commodity prices based on 
published forward commodity price curves or contract prices as of the date of the estimate, operating and development costs, 
and a risk-adjusted discount rate.

98

Table of Contents

Index to Financial Statements

Noble Energy, Inc.
Notes to Consolidated Financial Statements

Other long-lived assets, such as our midstream assets, are evaluated for potential impairment whenever events or changes in 
circumstances indicate that their carrying value may be greater than the undiscounted future net cash flows. Impairment, if any, 
is measured as the excess of an asset’s carrying amount over its estimated fair value, which is estimated as described above.

We recorded property impairment charges in 2017, 2016 and 2015 and it is possible that other proved oil and gas properties 
could become impaired in the future due to commodity price declines and/or field performance. See Note 5.  Asset 
Impairments.

Unproved Property Impairment  Our unproved properties consist of leasehold costs and allocated value to probable and 
possible reserves resulting from acquisitions. We assess individually significant unproved properties for impairment on a 
quarterly basis and recognize a loss at the time of impairment by providing an impairment allowance. In determining whether a 
significant unproved property is impaired we consider numerous factors including, but not limited to, current exploration plans, 
favorable or unfavorable exploration activity on the property being evaluated and/or adjacent properties, our geologists' 
evaluation of the property, and the remaining months in the lease term for the property.

When we have allocated fair value to an unproved property as the result of a transaction accounted for as a business 
combination, we use a future cash flow analysis to assess the unproved property for impairment. Cash flows used in the 
impairment analysis are determined based on management’s estimates of crude oil, natural gas and NGL reserves, future 
commodity prices and future costs to produce the reserves. Cash flow estimates related to probable and possible reserves are 
reduced by additional risk-weighting factors. Other individually insignificant unproved properties are amortized on a composite 
method over an average holding period. 

We recorded undeveloped leasehold impairment expense in 2017. It is possible that unproved oil and gas properties, including 
undeveloped leases, could become impaired in the future if commodity prices decline or if there are changes in exploration 
plans or the timing and extent of development activities. See Note 6.  Capitalized Exploratory Well Costs and Undeveloped 
Leasehold Costs.

Properties Acquired in Business Combinations  When sufficient market data is not available, we determine the fair values of 
proved and unproved properties acquired in transactions accounted for as business combinations by preparing our own 
estimates of cash flows from the production of crude oil, natural gas and NGL reserves. We estimate future prices to apply to 
the estimated reserves quantities acquired, and estimate future operating and development costs, to arrive at estimates of future 
net cash flows. For the fair value assigned to proved reserves, future net cash flows are discounted using a market-based 
weighted average cost of capital rate determined appropriate at the time of the business combination. To compensate for the 
inherent risk of estimating and valuing unproved reserves, discounted future net cash flows of probable and possible reserves 
are reduced by additional risk-weighting factors.

Assets Held for Sale  We occasionally market oil and gas properties for sale. At the end of each reporting period, we evaluate  
properties being marketed to determine whether any should be reclassified as held for sale. The held-for-sale criteria include: a 
commitment to a plan to sell; the asset is available for immediate sale; an active program to locate a buyer exists; the sale of the 
asset is probable and expected to be completed within one year; the asset is being actively marketed for sale; and it is unlikely 
that significant changes to the plan will be made. If each of these criteria is met, the property is reclassified as held for sale in 
our consolidated balance sheets and will be valued at the lower of net book value or anticipated sales proceeds less costs to sell. 
Impairment expense would be recorded for any excess of net book value over anticipated sales proceeds less costs to sell. See 
Note 4.  Acquisitions, Divestitures and Merger.

Exploration Costs   Geological and geophysical costs, delay rentals, amortization of unproved leasehold costs, and costs to drill 
exploratory wells that do not find proved reserves are expensed as oil and gas exploration. We carry the costs of an exploratory 
well as an asset if the well finds a sufficient quantity of reserves to justify its capitalization as a producing well and as long as 
we are making sufficient progress assessing the reserves and the economic and operating viability of the project. For certain 
capital-intensive Gulf of Mexico or international projects, it may take us more than one year to evaluate the future potential of 
the exploratory well and make a determination of its economic viability. Our ability to move forward on a project may be 
dependent on gaining access to transportation or processing facilities or obtaining permits and government or partner approval, 
the timing of which is beyond our control. In such cases, exploratory well costs remain suspended as long as we are actively 
pursuing access to necessary facilities and access to such permits and approvals and believe they will be obtained. We assess 
the status of suspended exploratory well costs on a quarterly basis. See Note 6.  Capitalized Exploratory Well Costs and 
Undeveloped Leasehold Costs.

Other Property   Other property includes automobiles, trucks, airplanes, office furniture, computer equipment and other fixed 
assets such as buildings and leasehold improvements. These items are recorded at cost and are depreciated on the straight-line 
method based on expected lives of the individual assets or group of assets, which range from three to thirty years. Other 

99

Table of Contents

Index to Financial Statements

Noble Energy, Inc.
Notes to Consolidated Financial Statements

property also includes linefill, which is recorded at cost to produce into the production line. Linefill is not subject to 
depreciation but is reviewed for impairment.

Capitalization of Interest   We capitalize interest costs associated with the development and construction of significant 
properties or projects to bring them to a condition and location necessary for their intended use, which for crude oil and natural 
gas assets is at first production from the field. Interest is capitalized using an interest rate equivalent to the weighted average 
rate we pay on long-term debt, including our unsecured revolving credit facility (Revolving Credit Facility) and bonds. 
Capitalized interest is included in the cost of oil and gas assets and amortized with other costs on a unit-of-production basis. 
Capitalized interest totaled $49 million in 2017, $84 million in 2016, and $144 million in 2015.

Asset Retirement Obligations   AROs consist of estimated costs of dismantlement, removal, site reclamation and similar 
activities associated with our oil and gas properties. We recognize the fair value of a liability for an ARO in the period in which 
it is incurred when we have an existing legal obligation associated with the retirement of our oil and gas properties that can 
reasonably be estimated, with the associated asset retirement cost capitalized as part of the carrying cost of the oil and gas 
asset.  The asset retirement cost is recorded at estimated fair value, measured by reference to the expected future cash outflows 
required to satisfy the retirement obligation discounted at our credit-adjusted risk-free rate. After initial recording, the liability is 
increased for the passage of time, with the increase being reflected as accretion expense and included in DD&A expense in the 
consolidated statements of operations. Subsequent adjustments in the cost estimate are reflected in the liability, and the amounts 
continue to be amortized over the useful life of the related long-lived asset. See Note 9.  Asset Retirement Obligations.

Goodwill 

2017 Goodwill  As of December 31, 2017, our consolidated balance sheet includes goodwill of $1.3 billion. This goodwill 
resulted from the acquisition (Clayton Williams Energy Acquisition) of Clayton Williams Energy, Inc. (Clayton Williams 
Energy) completed on April 24, 2017, and represents the excess of the consideration paid for Clayton Williams Energy over the 
net amounts assigned to identifiable assets acquired and liabilities assumed. All of our recorded goodwill is assigned to the 
Texas reporting unit, a component of our US reportable and operating segment. See Note 3. Clayton Williams Energy 
Acquisition.

Goodwill is not amortized to earnings but is qualitatively assessed for impairment. We assess goodwill for impairment annually 
during the third quarter, or more frequently as circumstances require, at the reporting unit level. If, based on our qualitative 
procedures, it is more likely than not that the fair value of the reporting unit is less than its carrying amount, we perform the 
two-step goodwill impairment test. The two-step goodwill impairment test is also performed whenever events or changes in 
circumstances indicate that the carrying value may not be recoverable. It is possible that goodwill could become impaired in the 
future if commodity prices or other economic factors decline. See Recently Issued Accounting Standards – Intangibles – 
Goodwill and Other: Simplifying the Test for Goodwill Impairment, below, for recently issued accounting guidance regarding 
future goodwill impairment testing.

We conducted a qualitative goodwill impairment assessment as of September 30, 2017 by examining relevant events and 
circumstances which could have a negative impact on our goodwill such as: macroeconomic conditions as pertinent to current 
and expected regulations, industry and market conditions, including overall global and regional supply and demand and impact 
of such on commodity prices; as well as microeconomic factors relevant to the enterprise such as cost factors that have a 
negative effect on earnings and cash flows, overall financial performance, reporting unit dispositions, acquisitions, portfolio 
restructuring and other decisions / circumstances specific to the entity and the reporting unit containing goodwill. 

Certain negative indicators as of September 30 2017 included the current onshore service cost inflation resulting in pressure on 
operating margins impacting our financial results associated with the Texas reporting unit and our stock price. However, we in 
turn also noted positive indicators such as the current commodity price environment, our current and future drilling and 
development plans for the Texas assets and synergies we expect from the Clayton Williams Energy Acquisition driven by our 
unconventional expertise and position in the adjacent properties, which further increase opportunities to drill longer lateral 
wells on our combined acreage positions, which would contribute to profitability. 

Furthermore, we see value creation to be derived from expected midstream build-out opportunities for the gathering, processing 
and servicing of future production in the Delaware Basin. Having assessed the totality of such events and circumstances 
described above, we determined that, while there existed certain negative factors, the overall qualitative assessment did not 
indicate that it is more likely than not that the fair value of the reporting unit is less than its carrying value. However, regardless 
of the outcome of the qualitative review, we decided to proceed with Step 1 of the impairment test as part of our annual review.

As such, we performed Step 1 of the goodwill impairment test, used to identify potential impairment. The result of the Step 1 
test indicated that the fair value of the Texas reporting unit exceeded its carrying value, including goodwill, and therefore, the 
Texas reporting unit goodwill was not considered to be impaired as of September 30, 2017.

100

Table of Contents

Index to Financial Statements

Noble Energy, Inc.
Notes to Consolidated Financial Statements

If, in the future, we dispose of a reporting unit or a portion of a reporting unit that constitutes a business, we will include 
goodwill associated with that business in the carrying amount of the business in order to determine the gain or loss on disposal. 
The amount of goodwill allocated to the carrying amount of a business can significantly impact the amount of gain or loss 
recognized on the sale of that business. The amount of goodwill to be included in that carrying amount will be based on the 
relative fair value of the business to be disposed of and the portion of the reporting unit that will be retained.

2015 Goodwill   At December 31, 2015, we reviewed our goodwill balance of $779 million for impairment in accordance with 
our accounting policy and identified factors, including continuing declines in commodity prices and the market value of our 
common stock, indicating that the fair value of goodwill could have fallen below its book value. We determined that the 
goodwill was fully impaired and recognized a loss of $779 million. This goodwill related primarily to the excess purchase price 
over amounts assigned to assets acquired and liabilities assumed in the merger of Rosetta Resources Inc. (Rosetta) into a 
subsidiary of Noble Energy (Rosetta Merger) in 2015 and the Patina Merger in 2005 and was associated with our US reporting 
unit. During 2015, prior to the impairment, goodwill increased $163 million due to the Rosetta Merger and decreased $4 
million due to allocations of goodwill to US onshore properties sold. 

For purposes of determining the 2015 goodwill impairment, we estimated the implied fair value of the goodwill using a variety 
of valuation methods, including the income and market approaches. Our estimate of fair value required us to use significant 
unobservable inputs, representative of a Level 3 fair value measurement, including assumptions for future crude oil and natural 
gas production, commodity prices based on forward commodity price curves, operating and development costs and other 
factors. The analysis supported that the implied fair value of goodwill was zero and, as such, goodwill was fully impaired.

Exit Costs   We recognize the fair value of a liability for an exit cost in the period in which a liability is incurred. Accrued exit 
costs at December 31, 2017 relate primarily to estimated costs associated with retained Marcellus Shale firm transportation 
contracts.

The recognition and fair value estimation of an exit cost liability require that management take into account certain estimates 
and assumptions such as: the determination of whether a cease-use date has occurred (defined as the date the entity ceases using 
the right conveyed by the contract, for example, the right to use a leased property or to receive future goods or services); the 
amount, if any, of economic benefit that is expected to be obtained from a contract through partial use or release; and our 
estimate of costs that will continue to be incurred under the contract. We record the liability at estimated fair value, based on 
expected future cash outflows required to satisfy the obligation, net of estimated recoveries, and discounted. Exit costs, and 
associated accretion expense, are included in operating expense in our consolidated statements of operations. See Note 17. 
Commitments and Contingencies.

Derivative Instruments and Hedging Activities   All derivative instruments (including certain derivative instruments 
embedded in other contracts) are recorded in our consolidated balance sheets as either an asset or liability and measured at fair 
value. We account for our commodity derivative instruments using mark-to-market accounting and recognize all gains and 
losses in earnings during the period in which they occur. Our consolidated statements of cash flows include the non-cash 
portion of gain and loss on commodity derivative instruments, which represents the difference between the total gain and loss 
on commodity derivative instruments and the cash received or paid on settlements of commodity derivative instruments during 
the period.  

We offset the fair value amounts recognized for derivative instruments and the fair value amounts recognized for the right to 
reclaim cash collateral or the obligation to return cash collateral. The cash collateral (commonly referred to as a “margin”) must 
arise from derivative instruments recognized at fair value that are executed with the same counterparty under a master 
agreement with netting clauses.

Stock-Based Compensation  Restricted stock and stock options issued to employees and directors are recorded at grant-date 
fair value. Expense is recognized on a straight-line basis over the employee’s and director’s requisite service period (generally 
the vesting period of the award) in the consolidated statements of operations. In 2016, we issued cash-settled awards to certain 
employees in lieu of a portion of restricted stock and stock options. We recognize the value of cash-settled awards utilizing the 
liability method as defined under Accounting Standards Codification Topic 718, Compensation – Stock Compensation. The fair 
value of liability awards is remeasured at each reporting date, based on the fair market value of a share of common stock of the 
Company as of the reporting date, through the settlement date with the change in fair value recognized as compensation 
expense over that period. See Note 12.  Stock-Based and Other Compensation Plans.

Pension and Other Postretirement Benefit Plans  We recognize the funded status (the difference between the fair value of 
plan assets and the projected benefit obligation) of restoration and other postretirement benefit plans in the consolidated balance 
sheets, with a corresponding adjustment to accumulated other comprehensive loss (AOCL), net of tax. The amount remaining 
in AOCL at December 31, 2017 represents unrecognized net actuarial loss and unrecognized prior service cost related to our 
restoration plan. These amounts are currently being recognized as net periodic benefit cost pursuant to our historical accounting 

101

Table of Contents

Index to Financial Statements

Noble Energy, Inc.
Notes to Consolidated Financial Statements

policy for amortizing such amounts. Any actuarial gains and losses that arise during the plan year, but which are not required to 
be recognized as net periodic benefit cost in the same period, are recognized as a component of AOCL. In third quarter 2015, 
we completed the process of terminating our noncontributory, tax-qualified defined benefit pension plan through the purchase 
of annuities for the remaining participants. As a result, we reclassified all remaining unamortized prior service cost and 
actuarial losses relating to the pension plan from AOCL to earnings.

Income Taxes and Impact of Tax Reform Legislation Income taxes are accounted for under the asset and liability method. 
Deferred tax assets and liabilities are recognized when items of income and expense are recognized in the financial statements 
in different periods than when recognized in the applicable tax return. Deferred tax assets arise when expenses are recognized in 
the financial statements before the tax return or when income items are recognized in the tax return prior to the financial 
statements. Deferred tax assets also arise when operating losses or tax credits are available to offset tax payments due in future 
years. Deferred tax liabilities arise when income items are recognized in the financial statements before the tax returns or when 
expenses are recognized in the tax return prior to the financial statements. Deferred tax assets and liabilities are measured using 
enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be 
recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the 
period that includes the date when the change in the tax rate was enacted. 

On December 22, 2017, the US Congress enacted the Tax Cuts and Jobs Act (Tax Reform Legislation), which made significant 
changes to US federal income tax law affecting us. See Note 11.  Income Taxes.

Treasury Stock  We record treasury stock purchases at cost, which includes incremental direct transaction costs. Amounts are 
recorded as reductions in shareholders’ equity in the consolidated balance sheets.

Revenue Recognition and Imbalances  We record revenues from the sales of crude oil, natural gas and NGLs when the 
product is delivered at a fixed or determinable price, title has transferred and collectibility is reasonably assured.

Basic and Diluted Earnings (Loss) Per Share Attributable to Noble Energy  Basic earnings (loss) per share (EPS) of our 
common stock is computed on the basis of the weighted average number of shares outstanding during each period. The diluted 
EPS of our common stock includes the effect of outstanding common stock equivalents such as stock options, shares of 
restricted stock, and/or shares of our stock held in a rabbi trust, except in periods in which there is a net loss. 

Contingencies  We are subject to legal proceedings, claims and liabilities that arise in the ordinary course of business. We 
accrue for losses associated with legal claims when such losses are considered probable and the amounts can be reasonably 
estimated. See Note 17.  Commitments and Contingencies.

We self-insure the medical and dental coverage provided to certain employees, and the deductibles for workers’ compensation, 
automobile liability and general liability coverage. Liabilities are accrued for self-insured claims, or when estimated losses 
exceed coverage limits, and when sufficient information is available to reasonably estimate the amount of the loss.

Foreign Currency  The US dollar is considered the functional currency for each of our international operations. Transactions 
that are completed in foreign currencies are remeasured into US dollars and recorded in the financial statements at prevailing 
foreign exchange rates. Transaction gains or losses are included in other non-operating (income) expense, net in the 
consolidated statements of operations.

Segment Information  Accounting policies for geographical segments are the same as those described above. Transfers 
between segments are accounted for at market value. We do not consider interest income and expense or income tax benefit or 
expense in our evaluation of the performance of geographical segments. See Note 14. Segment Information.

Revolving Credit Facilities  In accordance with our accounting policy, we net intra-quarter revolving credit facility activity to 
zero for purposes of consolidated statements of cash flows disclosure.

Recently Issued Accounting Standards  

Revenue Recognition  In May 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update 
No. 2014-09 (ASU 2014-09), which creates Topic 606, Revenue from Contracts with Customers. In summary, revenue 
recognition would occur upon the transfer of promised goods or services to customers in an amount that reflects the 
consideration to which the entity expects to be entitled in exchange for those goods or services. Additionally, ASU 2014-09 
requires enhanced financial statement disclosures over revenue recognition.   

We continue to evaluate the impact of ASU 2014-09 on our accounting policies, internal controls, and consolidated financial 
statements and related disclosures. We are performing a review of contracts for each of our revenue streams and developing 
accounting policies to address the provisions of ASU 2014-09. ASU 2014-09 also includes provisions regarding future revenues 
and expenses under a gross-versus-net presentation. We are evaluating the impact, if any, on the presentation of future revenues 
and expenses under this gross-versus-net presentation guidance. Based upon assessments performed to date, we do not expect 

102

Table of Contents

Index to Financial Statements

Noble Energy, Inc.
Notes to Consolidated Financial Statements

ASU 2014-09 to have an effect on the timing of revenue recognition or our financial position. In addition, we expect the impact 
regarding gross-versus-net presentation to involve certain presentation changes specifically related to domestic natural gas 
processing revenues and expenses. The impact of such presentation changes will not impact our net income. The standard is 
required to be adopted using either the full retrospective approach, with all prior periods presented adjusted, or the modified 
retrospective approach, with a cumulative adjustment to retained earnings on the opening balance sheet. We will adopt the new 
standard on January 1, 2018, using the modified retrospective approach. 

Compensation – Stock Compensation (Topic 718): Scope of Modification Accounting  In May 2017, the FASB issued 
Accounting Standards Update No. 2017-09 (ASU 2017-09) Compensation – Stock Compensation (Topic 718). The purpose of 
this update is to provide clarity as to which modifications of awards require modification accounting under Topic 718, whereas 
previously issued guidance frequently resulted in varying interpretations and a diversity of practice. An entity should employ 
modification accounting unless the following are met: (1) the fair value of the award is the same immediately before and after 
the award is modified; (2) the vesting conditions are the same under both the modified award and the original award; and (3) 
the classification of the modified award is the same as the original award, either equity or liability. Regardless of whether 
modification accounting is utilized, award disclosure requirements under Topic 718 remain unchanged. ASU 2017-09 will be 
effective for annual or any interim periods beginning after December 15, 2017. We will adopt the new standard on the effective 
date of January 1, 2018 and do not believe adoption will have a material impact on our financial statements. 

Business Combinations – Clarifying the Definition of a Business  In January 2017, the FASB issued Accounting Standards 
Update No. 2017-01 (ASU 2017-01): Business Combinations – Clarifying the Definition of a Business, that assists in 
determining whether certain transactions should be accounted for as acquisitions or dispositions of assets or businesses. The 
amendment provides a screen to be applied to the fair value of an acquisition or disposal to evaluate whether the assets in 
question are simply assets or if they are a business. If the screen is not met, no further evaluation is needed. If the screen is met, 
certain steps are subsequently taken to make the determination. ASU 2017-01 is designed to reduce the number of transactions 
accounted for as business transactions, which take more time and cost more to analyze than asset transactions. ASU 2017-01 is 
effective for annual and interim periods beginning after December 15, 2017 and is required to be applied prospectively. Our 
recent Clayton Williams Energy Acquisition was not impacted by this guidance, which we will apply to applicable and 
qualifying transactions after adoption on January 1, 2018.

Statement of Cash Flows – Restricted Cash  In November 2016, the FASB issued Accounting Standards Update No. 2016-18 
(ASU 2016-18): Statement of Cash Flows – Restricted Cash, which requires amounts generally described as restricted cash and 
restricted cash equivalents be included with cash and cash equivalents when reconciling the total beginning and ending amounts 
for the periods shown on the statement of cash flows. ASU 2016-18 will be effective for annual and interim periods beginning 
after December 15, 2017, with earlier application permitted. We will adopt the new standard on the effective date of January 1, 
2018 and do not believe adoption will have a material impact on our consolidated statements of cash flows and related 
disclosures.

Statement of Cash Flows – Classification of Certain Cash Receipts and Cash Payments  In August 2016, the FASB issued 
Accounting Standards Update No. 2016-15 (ASU 2016-15): Statement of Cash Flows – Classification of Certain Cash Receipts 
and Cash Payments, to clarify how eight specific cash receipt and cash payment transactions should be presented in the 
statement of cash flows. ASU 2016-15 will be effective for annual and interim periods beginning after December 15, 2017, with 
earlier application permitted. We will adopt the new standard on the effective date of January 1, 2018 and do not believe 
adoption will have a material impact on our consolidated statements of cash flows and related disclosures as this update pertains 
to classification of items and is not a change in accounting principle. 

Leases  In February 2016, the FASB issued Accounting Standards Update No. 2016-02 (ASU 2016-02): Leases. The guidance 
requires lessees to recognize assets and liabilities on the balance sheet for the rights and obligations created by leases with 
terms of more than 12 months. ASU 2016-02 also requires disclosures designed to give financial statement users information on 
the amount, timing, and uncertainty of cash flows arising from leases. The standard will be effective for annual and interim 
periods beginning after December 15, 2018, with earlier application permitted.

In the normal course of business, we enter into capital and operating lease agreements to support our exploration and 
development operations and lease assets such as drilling rigs, platforms, storage facilities, field services and well equipment, 
pipeline capacity, office space and other assets. 

We will adopt the new standard on the effective date of January 1, 2019. At this time, we cannot reasonably estimate the impact 
ASU 2016-02 will have on our consolidated financial statements; however, we believe adoption and implementation of ASU 
2016-02 will have a material impact on our consolidated balance sheet resulting from an increase in both assets and liabilities 
relating to leasing activities. As part of our assessment to date, we have formed an implementation work team, prepared 
educational and training materials pertinent to ASU 2016-02 and have begun contract review and documentation. 

103

Table of Contents

Index to Financial Statements

Noble Energy, Inc.
Notes to Consolidated Financial Statements

Intangibles – Goodwill and Other – Simplifying the Test for Goodwill Impairment  In January 2017, the FASB issued 
Accounting Standards Update No. 2017-04 (ASU 2017-04): Intangibles – Goodwill and Other – Simplifying the Test for 
Goodwill Impairment, to simplify how an entity is required to test goodwill for impairment by eliminating Step 2 from the 
goodwill impairment test. Step 2 measures a goodwill impairment loss by comparing the implied fair value of a reporting unit’s 
goodwill with the carrying amount of that goodwill. Under the new guidance, an entity will perform its annual, or interim, 
goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount, with an impairment charge 
being recognized for the amount by which the carrying amount exceeds the reporting unit’s fair value. ASU 2017-04 will be 
effective for annual or any interim goodwill impairment tests in fiscal years beginning after December 15, 2019, with early 
adoption permitted. We are currently evaluating the provisions of ASU 2017-04 and have not yet determined if we will early 
adopt.

Financial Instruments – Credit Losses In June 2016, the FASB issued Accounting Standards Update No. 2016-13 (ASU 
2016-13): Financial Instruments – Credit Losses, which replaces the incurred loss impairment methodology in current US 
GAAP with a methodology that reflects expected credit losses. The update is intended to provide financial statement users with 
more useful information about expected credit losses. The amended guidance is effective for fiscal years beginning after 
December 15, 2019, with early adoption permitted. We will adopt the new standard on the effective date of January 1, 2020 and 
are currently evaluating the effect, if any, that the guidance will have on our consolidated financial statements and related 
disclosures. 

SAB 118    On December 22, 2017, the SEC staff issued Staff Accounting Bulletin No. 118 (SAB 118) to address the application 
of US GAAP in situations when a registrant does not have the necessary information available, prepared, or analyzed (including 
computations) in reasonable detail to complete the accounting for certain income tax effects relating to the Tax Reform 
Legislation. SAB 118 provides guidance for registrants under three scenarios: 

1)  if measurement of certain income tax effects is complete, registrants must reflect the tax effects of the Tax Reform 

Legislation for which the accounting is complete; 

2)  if measurement of certain income tax effects can be reasonably estimated, registrants must report provisional amounts for 
those specific income tax effects of the Tax Reform Legislation for which the accounting is incomplete but a reasonable 
estimate can be determined. Provisional amounts or adjustments to provisional amounts identified in the measurement 
period, as defined, should be included as an adjustment to tax expense or benefit from continuing operations in the period 
the amounts are determined; and

3)  if measurement of certain income tax effects cannot be reasonably estimated, registrants are not required to report 

provisional amounts for any specific income tax effects of the Tax Reform Legislation for which a reasonable estimate 
cannot be determined, and would continue to apply ASC 740 – Income Taxes based on the provisions of the tax laws that 
were in effect immediately prior to the enactment of the Tax Reform Legislation. Registrants would report the provisional 
amounts of the tax effects of the Tax Reform Legislation in the first reporting period in which a reasonable estimate can be 
determined. 

The SEC staff believes that in no circumstances should the measurement period extend beyond December 22, 2018, one year 
from the enactment of the Tax Reform Legislation. See Note 11. Income Taxes.

104

Table of Contents

Index to Financial Statements

Noble Energy, Inc.
Notes to Consolidated Financial Statements

Note 2.  Additional Financial Statement Information 

Additional statements of operations information is as follows:

Year Ended December 31,
2016

$

$

$

$

$

$

$

$

$

$

2015

2017

563
127
306
996

571
138
432
1,141

542
78
480
1,100

113
266
34
43
32
488

148
579
76
77
45
925

62
9
27
55
35
188

(millions)
Production Expense
Lease Operating Expense
Production and Ad Valorem Taxes
Gathering, Transportation and Processing Expense (1)
Total
Exploration Expense
Leasehold Impairment and Amortization (2)
Dry Hole Cost
Seismic, Geological and Geophysical
Staff Expense
Other
Total
Loss on Marcellus Shale Upstream Divestiture
Loss on Sale
Firm Transportation Commitment (2)
Other(3)
Total
Other Operating (Income) Expense, Net
Marketing Expense (4)
Clayton Williams Acquisition Expenses (5)
Corporate Restructuring Expense (6)
Pension Plan Expense (7)
Impact of Rosetta Merger (8)
North Sea Remediation Project Revision (9)
Loss on Asset Due to Terminated Contract (10)
Gain on Divestitures, Net (11)
Other, Net
Total
(1)  Certain of our gathering and processing expenses were historically presented as components of other operating expense, net, in our 
consolidated statement of operations. Beginning in 2017, we changed our presentation to reflect these as components of production 
expense. These costs are now included within gathering, transportation and processing expense. For the years ended December 31, 2016 
and 2015, these costs totaled $17 million and $17 million, respectively, and have been reclassified from other operating expense, net to 
conform to current presentation. 

58
—
8
—
(25)
—
41
(238)
53
(103) $

47
100
—
—
—
(42)
—
(326)
33
(188) $

— $
—
—
— $

2,270
93
16
2,379

33
—
51
88
81
—
—
—
79
332  

—
—
—
—

$

$

$

$

$

$

$

$

$

$

(2)  See Note 6.  Capitalized Exploratory Well Costs and Undeveloped Leasehold Costs.
(3)  Expense relates to unutilized commitments associated with Marcellus Shale firm transportation contracts. See Note 17.  Commitments 

and Contingencies.

(4)  Amount includes costs for legal and advisory services and employee severance charges.
(5)  Expense relates to unutilized firm transportation and shortfalls in delivering or transporting minimum volumes under certain 

commitments.

(6)  See Note 3.  Clayton Williams Energy Acquisition.
(7)  Expenses are associated with corporate organizational activities.
(8)  Amount includes reclassification of the actuarial loss from AOCL related to the re-measurement and termination of our defined benefit 

pension plan to net income (loss).

(9)  Amounts represent a purchase price allocation adjustment in 2016 and merger expenses in 2015. See Note 4.  Acquisitions, Divestitures 

and Merger.

(10)  See Note 9.  Asset Retirement Obligations.
(11)  Amount relates to the termination of a rig contract offshore Falkland Islands as a result of a supplier's non-performance.
(12)  See Note 4.  Acquisitions, Divestitures and Merger.

105

 
 
 
 
 
 
 
Table of Contents

Index to Financial Statements

Noble Energy, Inc.
Notes to Consolidated Financial Statements

Additional balance sheet information is as follows:

(millions)
Accounts Receivable, Net
Commodity Sales
Joint Interest Billings
Proceeds Receivable (1)
Other
Allowance for Doubtful Accounts
Total
Other Current Assets
Inventories, Materials and Supplies
Inventories, Crude Oil
Assets Held for Sale(2)
Restricted Cash (3)
Prepaid Expenses and Other Assets, Current
Total
Other Noncurrent Assets
Equity Method Investments
Mutual Fund Investments
Net Deferred Income Tax Asset
Other Assets, Noncurrent
Total
Other Current Liabilities
Production and Ad Valorem Taxes
Commodity Derivative Liabilities, Current
Income Taxes Payable
Asset Retirement Obligations, Current
Interest Payable
Compensation and Benefits Payable
Current Portion of Capital Lease and Other Obligations
Other Liabilities, Current
Total
Other Noncurrent Liabilities
Deferred Compensation Liabilities, Noncurrent
Asset Retirement Obligations, Noncurrent
Production and Ad Valorem Taxes
Marcellus Firm Transportation Commitment, Noncurrent (4)
Other Liabilities, Noncurrent
Total

December 31,

2017

2016

$

$

$

$

$

$

$

$

$

$

455
207
—
103
(17)
748

66
16
629
38
31
780

305
57
25
74
461

84
58
18
51
67
98
61
141
578

197
824
69
76
79
1,245

$

$

$

$

$

$

$

$

$

$

403
106
40
86
(20)
615

71
18
18
30
23
160

400
71
—
37
508

115
102
53
160
76
110
63
63
742

218
775
47
—
63
1,103

(1)  Proceeds relate to the farm-out of a 35% interest in Block 12 offshore Cyprus and were received in January 2017. See Note 4.  

Acquisitions, Divestitures and Merger.

(2)       Assets held for sale at December 31, 2017 include assets in the Greeley Crescent area of the DJ Basin, a 7.5% interest in the Tamar and 

Dalit fields, offshore Israel, certain non-strategic assets acquired in the Clayton Williams Energy Acquisition and the CONE investments. 
Assets held for sale at December 31, 2016 include assets in the Greeley Crescent area of the DJ Basin. See Note 4.  Acquisitions, 
Divestitures and Merger.

(3)       Balance at December 31, 2017 represents amount held in escrow for the purchase of a midstream entity. Balance at December 31, 2016 
represents amount held in escrow for the purchase of certain Delaware Basin properties. See Note 4.  Acquisitions, Divestitures and 
Merger.

(4)  Relates to unutilized commitments associated with Marcellus Shale firm transportation contracts. See Note 4.  Acquisitions, Divestitures 

106

 
 
 
 
 
Table of Contents

Index to Financial Statements

Noble Energy, Inc.
Notes to Consolidated Financial Statements

and Merger.

Supplemental statements of cash flow information is as follows:

(millions)
Cash Paid During the Year For
Interest, Net of Amount Capitalized
Income Taxes Paid, Net
Non-Cash Financing and Investing Activities
Increase in Capital Lease and Other Obligations

Note 3.  Clayton Williams Energy Acquisition 

Year Ended December 31,
2016

2017

2015

$

$

346
121

$

327
236

—

5

260
202

55

In January 2017, we announced the Clayton Williams Energy Acquisition, which was approved by Clayton Williams Energy 
stockholders and closed on April 24, 2017. Acquired assets include 71,000 highly contiguous net acres in the core of the 
Delaware Basin adjacent to our Reeves County holdings in Texas, and an additional 100,000 net acres in other areas of 
the United States. In total, the acquisition increased our Delaware Basin position to approximately 117,000 net acres.

See Supplemental Oil and Gas Information (Unaudited), below for discussion of proved reserves acquired. In addition, upon 
closing of the acquisition,  approximately 64,000 net acres in Reeves County, Texas were dedicated to Noble Midstream 
Partners for infield crude oil, natural gas and produced water gathering. 

The acquisition was effected through the issuance of approximately 56 million shares of Noble Energy common stock with a 
fair value of approximately $1.9 billion and cash consideration of $637 million, for total consideration of approximately $2.5 
billion, in exchange for all outstanding Clayton Williams Energy shares, including stock options, restricted stock awards and 
warrants. The closing price of our stock on the New York Stock Exchange (NYSE) was $34.17 on April 24, 2017. In connection 
with the transaction, we borrowed $1.3 billion under our Revolving Credit Facility (defined below) to fund the cash portion of 
the acquisition consideration, redeem outstanding Clayton Williams Energy debt, pay associated make-whole premiums and 
pay related fees and expenses. See Note 10.  Long-Term Debt.

In connection with the Clayton Williams Energy Acquisition, we have incurred acquisition-related costs of $100 million to date, 
including $64 million of severance, consulting, investment, advisory, legal and other merger-related fees and $36 million of 
noncash share-based compensation expense, all of which were expensed and are included in other operating expense, net in our 
consolidated statements of operations. In addition, we received approximately 720,000 shares of common stock from Clayton 
Williams Energy shareholders for the payment of withholding taxes due on the vesting of their restricted stock and options 
pursuant to the purchase and sale agreement, resulting in a $25 million increase in our treasury stock balance.

Purchase Price Allocation   The transaction has been accounted for as a business combination, using the acquisition method. 
The following table represents the preliminary allocation of the total purchase price of Clayton Williams Energy to the assets 
acquired and the liabilities assumed based on the fair value at the acquisition date, with any excess of the purchase price over 
the estimated fair value of the identifiable net assets acquired recorded as goodwill. 

Certain data necessary to complete the purchase price allocation is not yet available, and includes, but is not limited to, analysis 
of the underlying tax basis of Clayton Williams Energy's assets and liabilities, and final appraisals of assets acquired and 
liabilities assumed. We expect to complete the purchase price allocation during the 12-month period following the acquisition 
date, during which time the value of the assets and liabilities, including any goodwill, may be revised as appropriate.

107

 
 
 
 
Table of Contents

Index to Financial Statements

Noble Energy, Inc.
Notes to Consolidated Financial Statements

The following table sets forth our preliminary purchase price allocation:

(millions, except per share amounts)
Fair Value of Common Stock Issued
Plus: Cash Consideration Paid to Clayton Williams Energy Stockholders
Total Purchase Price
Plus Liabilities Assumed by Noble Energy:

Accounts Payable
Other Current Liabilities
Long-Term Deferred Tax Liability
Long-Term Debt
Asset Retirement Obligations

Total Purchase Price Plus Liabilities Assumed

The fair values of Clayton Williams Energy's identifiable assets are as follows:

(millions)

Cash and Cash Equivalents
Other Current Assets
Oil and Gas Properties:

Proved Reserves
Undeveloped Leasehold Cost
Gathering and Processing Assets
Asset Retirement Costs

Other Property Plant and Equipment
Implied Goodwill
Total Asset Value

$

$

$

$

$

1,876
637
2,513

99
38
509
595
63
3,817

21
70

722
1,571
48
63
12
1,310
3,817

In connection with the acquisition, we assumed, and then subsequently retired, all of Clayton Williams Energy's long-term debt 
at a cost to us of $595 million. The fair value measurements of long-term debt were estimated based on the early redemption 
prices and represent Level 1 inputs.

The fair value measurements of crude oil and natural gas properties and asset retirement obligations are based on inputs that are 
not observable in the market and therefore represent Level 3 inputs. The fair values of crude oil and natural gas properties and 
asset retirement obligations were measured using valuation techniques that convert expected future cash flows to a single 
discounted amount. Significant inputs to the valuation of crude oil and natural gas properties included estimates of: (i) proved, 
possible and probable reserves; (ii) production rates and related development timing; (iii) future operating and development 
costs; (iv) future commodity prices; and (v) a market-based weighted average cost of capital rate. These inputs required 
significant judgments and estimates by management at the time of the valuation and are the most sensitive and may be subject 
to change.

Based upon the preliminary purchase price allocation, we have recognized $1.3 billion of goodwill, all of which is assigned to 
the Texas reporting unit. As a result of the acquisition, we expect to realize certain synergies which may result from our control 
of the combined assets as well as future midstream opportunities. The oil-rich geology of these assets, coupled with our 
unconventional expertise and position in the adjacent properties, significantly enhances our crude oil focus and growth outlook. 
The acquisition provides for synergies related to administrative and capital efficiencies, and increased opportunities to drill 
longer lateral wells on our combined acreage positions, enhances our crude oil production base and future crude oil growth 
potential. It also adds to our midstream assets and provides future midstream build-out opportunities for the gathering, 
processing and servicing of future production in the basin.

Results of Operations   The results of operations attributable to Clayton Williams Energy are included in our consolidated 
statements of operations beginning on April 24, 2017. We generated revenues of $99 million and a pre-tax loss of $19 million 
from the Clayton Williams Energy assets during the period April 24, 2017 to December 31, 2017.

Pro Forma Financial Information  The following pro forma condensed combined financial information was derived from the 
historical financial statements of Noble Energy and Clayton Williams Energy and gives effect to the acquisition as if it had 
occurred on January 1, 2016. The information below reflects pro forma adjustments based on available information and certain 
assumptions that we believe are reasonable, including (i) Noble Energy's common stock and equity awards issued to convert 
Clayton Williams Energy's outstanding shares of common stock and equity awards and conversion of warrants as of the closing 

108

Table of Contents

Index to Financial Statements

Noble Energy, Inc.
Notes to Consolidated Financial Statements

date of the acquisition, (ii) depletion of Clayton Williams Energy's fair-valued proved crude oil and natural gas properties, and 
(iii) the estimated tax impacts of the pro forma adjustments. 

Additionally, pro forma earnings for the year ended December 31, 2017 were adjusted to exclude acquisition-related costs 
of $100 million incurred by Noble Energy and $23 million incurred by Clayton Williams Energy. The pro forma results of 
operations do not include any cost savings or other synergies that we expect to realize from the Clayton Williams Energy 
Acquisition or any estimated costs that have been or will be incurred by us to integrate the Clayton Williams Energy assets. The 
pro forma condensed combined financial information has been included for comparative purposes and is not necessarily 
indicative of the results that might have actually occurred had the Clayton Williams Energy Acquisition taken place on January 
1, 2016; furthermore, the financial information is not intended to be a projection of future results.

(millions, except per share amounts)
Revenues
Net Loss and Comprehensive Loss Attributable to Noble Energy

Net Loss Attributable to Noble Energy per Common Share
Basic and Diluted

Note 4.  Acquisitions, Divestitures and Merger 

Year Ended December 31,

2017

2016

$

$

$

4,304
(678)

3,651
(1,082)

(1.39) $

(2.23)

We maintain an ongoing portfolio management program and have engaged in various transactions over recent years. 

Year Ended December 31, 2017

Marcellus Shale Upstream Divestiture  On June 28, 2017, we closed the sale of all of our Marcellus Shale upstream assets, 
which were primarily natural gas properties. The sales price totaled $1.2 billion, and we received $1.0 billion of net cash 
proceeds, after consideration of customary adjustments, at closing. The sales price includes additional contingent consideration 
of up to $100 million structured as three separate payments of $33.3 million each.  The contingent payments are in effect should 
the average annual price of the Appalachia Dominion, South Point index exceed $3.30 per MMBtu in the individual annual 
periods from 2018 through 2020. To date, conditions for the recognition of the contingent consideration are not probable and, 
therefore, no amounts have been accrued related to the contingent consideration. Proceeds from the transaction were used to 
repay borrowings resulting from the Clayton Williams Energy Acquisition.  See Note 10.  Long-Term Debt. 

For the year ended December 31, 2017, we recognized a total loss of $2.4 billion, or $1.5 billion after-tax, on this divestiture. 
The aggregate net book value of the properties sold was approximately $3.4 billion, which included approximately $883 million 
of undeveloped leasehold cost.

As part of the loss, we accrued non-cash exit costs of $41 million, discounted, relating to a retained transportation contract that 
is currently in service; however, we no longer have production to satisfy this commitment and do not plan to utilize this 
capacity in the future. In addition, we recorded a $52 million accrual, discounted, relating to future commitments to a third 
party who assumed a portion of our retained capacity relating to other pipeline projects. Both charges are included in loss on 
Marcellus Shale upstream divestiture in our consolidated statements of operations in accordance with accounting for exit or 
disposal activities under ASC 420 – Exit or Disposal Cost Obligations. 

Other retained Marcellus Shale firm transportation contracts relate to pipeline projects that are not yet commercially available 
to us. These projects that are not yet available will undergo construction and, as these projects become commercially available 
to us, we will assess, based upon the facts and circumstances, the recognition of any potential exit cost liabilities. It is likely we 
will incur additional firm transportation costs associated with this exit activity in the future. See Note 2.  Additional Financial 
Statement Information and Note 17.  Commitments and Contingencies.   

Production from the Marcellus Shale upstream assets represented 204 MMcfe/d of total consolidated sales volumes for the year 
ended December 31, 2017. See Supplemental Oil and Gas Information (Unaudited), below for discussion of reserves divested. 

109

Table of Contents

Index to Financial Statements

Noble Energy, Inc.
Notes to Consolidated Financial Statements

Divestiture of 7.5% Interest in Tamar and Dalit Fields    The terms of the Israel Natural Gas Framework (Framework) require 
us to reduce our current ownership interest in the Tamar and Dalit fields from 32.5% to 25% by year-end 2021. On January 29, 
2018, we signed a definitive agreement to divest a 7.5% working interest in each of the fields to Tamar Petroleum Ltd. (TASE: 
TMRP) (Tamar Petroleum) for cash proceeds of approximately $560 million and 38.5 million shares of Tamar Petroleum. 
Closing of the transaction is expected by the end of first quarter 2018, subject to satisfactory conclusion of Tamar Petroleum's 
debt financing and customary approvals, terms and conditions.  As of December 31, 2017, the net book value of the 7.5% 
interest, $293 million, was included in assets held for sale. 

Divestiture of Southwest Royalties   In January 2018, we signed an agreement to sell our interest in Southwest Royalties, Inc. 
(Southwest Royalties), a subsidiary of Clayton Williams Energy, and acquired as part of Clayton Williams Energy Acquisition. 
We received proceeds of $60 million on sale of these assets. As of December 31, 2017, the asset value of these properties of 
$102 million and associated asset retirement obligation of $42 million were included in assets and liabilities held for sale.

Other US Onshore Transactions   We conducted the following additional transactions in 2017:

•  US Onshore Divestitures    During 2017, we received total proceeds of $671 million resulting from the sale of certain 
US onshore properties, including $568 million related to divestment of non-core acreage in the DJ Basin. Proceeds 
were applied to reduce field basis with no recognition of gain or loss. A subsequent closing for certain non-core DJ 
Basin operated properties, in the amount of approximately $40 million, is expected to occur in mid-2018.

• 

Sale of Mineral and Royalty Assets  We received $335 million and recognized a gain of $334 million on the sale of 
mineral and royalty assets covering approximately 140,000 net mineral acres concentrated primarily in Texas, 
Oklahoma and North Dakota. 

•  Delaware Basin Acquisition   In January 2017, we completed the acquisition of Delaware Basin properties, including 
seven producing wells, thus increasing our contiguous acreage position in the Reeves County area. Consideration 
totaled $301 million, approximately $246 million of which was allocated to undeveloped leasehold cost. Initial 
consideration of $30 million was paid into an escrow account in fourth quarter 2016 and reflected as a restricted asset 
in our consolidated balance sheet as of December 31, 2016. 

Marcellus Shale CONE Gathering Divestiture   In December 2017, we signed an agreement to sell our 50% interest in CONE 
Gathering LLC (CONE Gathering) to CNX Resources Corporation. CONE Gathering owns the general partner of CONE 
Midstream Partners LP (CONE Midstream), which constructs, owns and operates natural gas gathering and other midstream 
energy assets in the Marcellus Shale. At December 31, 2017, our total investment of $181 million in the CONE entities was 
included in assets held for sale. We closed the sale in January 2018, receiving proceeds of $308 million in cash and utilized 
proceeds to pay down borrowings under the Revolving Credit Facility.  We now hold 21.7 million common units representing a 
33.5% limited partner interests in CNX Midstream Partners LP (NYSE: CNXM). As of December 31, 2017, the net book value 
of the limited partner interests was approximately $70 million.

Noble Midstream Partners Asset Contribution   On June 26, 2017, Noble Midstream Partners acquired an additional 15% 
limited partner interest in Blanco River DevCo LP (Blanco River DevCo), increasing its ownership to 40% of the Blanco River 
DevCo LP, and acquired the remaining 20% limited partner interest in Colorado River DevCo LP (Colorado River DevCo) 
from us for $270 million. 

Blanco River DevCo holds Noble Midstream Partners’ Delaware Basin in-field gathering dedications for crude oil and 
produced water gathering services on approximately 111,000 net acres, with substantially all of the acreage also dedicated for 
natural gas gathering. Colorado River DevCo provides services across our development areas in the DJ Basin, including crude 
oil and natural gas gathering and water services in the Wells Ranch area and crude oil gathering in the East Pony area. 

The $270 million consideration consisted of $245 million in cash and 562,430 common units representing limited partner 
interests in Noble Midstream Partners. Noble Midstream Partners funded the cash consideration with approximately $138 
million of net proceeds from a concurrent private placement of common units and $90 million of borrowings under the Noble 
Midstream Services Revolving Credit Facility (defined below) and the remainder from cash on hand.

Noble Midstream Partners Advantage Joint Venture   On April 3, 2017, Noble Midstream Partners and Plains Pipeline, L.P., a 
wholly owned subsidiary of Plains All American Pipeline, L.P., acquired Advantage Pipeline, L.L.C. (Advantage Pipeline) 
for $133 million through a newly formed 50/50 joint venture (Advantage Joint Venture). Noble Midstream Partners contributed 
approximately $67 million of cash to the Advantage Joint Venture, funded by available cash on hand and the Noble Midstream 
Services Revolving Credit Facility. The Advantage Joint Venture is accounted for under the equity method and is included 
within our Midstream segment. See Note 7. Equity Method Investments.

110

Table of Contents

Index to Financial Statements

Noble Energy, Inc.
Notes to Consolidated Financial Statements

Noble Midstream Partners serves as operator of the Advantage Pipeline System, which includes a 70-mile crude oil pipeline in 
the Delaware Basin from Reeves County, Texas to Crane County, Texas with 150 MBbls per day of shipping capacity and 490 
MBbls of storage capacity.

Noble Midstream Partners Black Diamond Gathering    In December 2017, Noble Midstream Partners and Greenfield 
Midstream, LLC, a portfolio company of EnCap Flatrock Midstream Gathering, formed an entity, Black Diamond Gathering, 
LLC (Black Diamond Gathering). Black Diamond Gathering subsequently entered into definitive agreements to acquire Saddle 
Butte Rockies Midstream, LLC and affiliates (collectively, Saddle Butte). The Saddle Butte purchase closed on January 31, 
2018, for total cash consideration of approximately $638.5 million. Noble Midstream Partners funded its  share of the purchase 
price with proceeds from its December 2017 common unit offering, cash on hand and borrowings under its unsecured revolving 
credit facility. See Note 10. Long-Term Debt.

Noble Midstream partners received a 54.4% ownership interest in Black Diamond. Noble Midstream Partners fully consolidates 
the assets and liabilities of Black Diamond Gathering. 

Noble Midstream Partners will serve as operator of Saddle Butte assets which include a large-scale integrated crude oil 
gathering system in the DJ Basin, consisting of approximately 160 miles of pipeline in operation, 300 MBbls per day of 
delivery capacity and approximately 210 MBbls of crude oil storage capacity. Saddle Butte has approximately 141,000 
dedicated acres from six customers under fixed fee arrangements. 

Subsequent Event - Gulf of Mexico Divestiture   On February 15, 2018, we announced the Company signed a definitive 
agreement to sell its assets in the Gulf of Mexico for cash consideration of $480 million. As part of the transaction, the buyer 
will assume all abandonment obligations associated with the properties which we estimate to approximate $230 million as of 
December 31, 2017. The net book value of the Gulf of Mexico assets as of December 31, 2017 was approximately $750 
million. We expect to incur a charge in early 2018, subject to customary closing adjustments. The transaction is expected to 
close during second quarter 2018, contingent upon the buyer’s successful implementation of its contemplated restructuring, and 
will be effective as of January 1, 2018.

Year Ended December 31, 2016

Termination of Marcellus Shale JDA   In fourth quarter 2016, we and CONSOL Energy Inc. (CONSOL) agreed to terminate our 
50-50 Joint Development Agreement (JDA) in the Marcellus Shale. In connection with the terminated JDA, we executed and 
closed an exchange agreement whereby we and CONSOL each transferred all of our interest in a portion of co-owned 
properties to one another. In addition to the acreage and production realignment between the two companies, we remitted a cash 
payment of approximately $213 million to CONSOL at closing. Terminating the JDA resulted in the elimination of the 
remaining outstanding carried cost obligation due from us. No gain or loss was recognized on the exchange. 

DJ Basin Acreage Exchange   We closed a cashless acreage exchange in the DJ Basin receiving approximately 11,700 net acres 
within our Wells Ranch development area in exchange for approximately 13,500 net acres primarily from our Bronco area. No 
gain or loss was recognized.

2016 Divestitures   During 2016, we engaged in the following sales transactions:

• 

• 

• 

• 

entered an agreement to divest certain producing and non-producing properties covering approximately 33,100 net 
acres in the DJ Basin for proceeds of $505 million. We closed the sale on a portion of the properties in 2016, receiving 
proceeds of $486 million, with the remainder of the sale closing in 2017. Proceeds were applied to reduce field basis 
with no recognition of gain or loss;

sold additional DJ Basin non-producing properties, certain Eagle Ford properties, our Bowdoin property in northern 
Montana, and certain other smaller US onshore properties, generating total net proceeds of $152 million, a net loss of 
$23 million on the Bowdoin sale, and no further gain or loss recognized on the remaining transactions; 

sold our 47% interest in the Alon A and Alon C licenses, which included the Karish and Tanin fields, offshore Israel, 
for a total sales price of $73 million ($67 million for asset consideration and $6 million from cost adjustments). 
Proceeds were applied to reduce field basis with no recognition of gain or loss;

sold a 3.5% working interest in the Tamar and Dalit fields, offshore Israel, in compliance with the terms of the 
Framework, which requires us to reduce our ownership interest in the fields to 25% by year-end 2021. The sales price 
totaled $431 million, and we received net cash proceeds of $316 million, after consideration of timing and tax 
adjustments, at closing. Proceeds were ratably applied to the fields basis and resulted in the recognition of a $261 
million gain; and 

111

Table of Contents

Index to Financial Statements

Noble Energy, Inc.
Notes to Consolidated Financial Statements

• 

received proceeds of $131 million related to the farm-out of a 35% interest in Block 12, which includes the Aphrodite 
natural gas discovery, offshore Cyprus. We received the remaining proceeds of $40 million in January 2017. Proceeds 
were applied to reduce field basis with no recognition of gain or loss.

Year Ended December 31, 2015

2015 Divestitures   In 2015, we sold certain non-strategic US onshore properties, receiving proceeds of $151 million, with no 
gain or loss recorded.

Rosetta Merger  On July 20, 2015, Noble Energy completed the Rosetta Merger. The merger was effected through the issuance 
of approximately 41 million shares of Noble Energy common stock in exchange for all outstanding shares of Rosetta using a 
ratio of 0.542 of a share of Noble Energy common stock for each share of Rosetta common stock and the assumption of 
Rosetta's liabilities, including approximately $2 billion fair value of outstanding debt.

The merger added two new US onshore shale positions to our portfolio including approximately 50,000 net acres in the Eagle 
Ford Shale and 54,000 net acres in the Delaware Basin (45,000 acres in the Delaware Basin and 9,000 acres in the Midland 
Basin).  In connection with the Rosetta Merger, we incurred merger-related costs of approximately $81 million, including (i) 
$66 million of severance, consulting, investment, advisory, legal and other merger-related fees, and (ii) $15 million of noncash 
share-based compensation expense, all of which were expensed and are included in other operating (income) expense, net.

Purchase Price Allocation   The merger was accounted for as a business combination, using the acquisition method.  The 
allocation of the total purchase price of Rosetta to the assets acquired and the liabilities assumed was based on the fair values at 
the merger date, with the excess of the purchase price over the fair values of the identifiable net assets acquired recorded as 
goodwill. 

Results of Operations   The results of operations attributable to Rosetta are included in our consolidated statements of 
operations beginning on July 21, 2015. Revenues of $457 million and pre-tax net loss of $20 million, exclusive of a $25 million 
purchase price allocation adjustment, from Rosetta were generated for the year ended December 31, 2016. Revenues of $181 
million and pre-tax net loss of $120 million, inclusive of a $163 million goodwill impairment, from Rosetta were generated 
from July 21, 2015 to December 31, 2015. 

See Supplemental Oil and Gas Information (Unaudited), below, for discussion of proved reserves added or divested in 
connection with the above transactions.

Note 5.  Asset Impairments 

Pre-tax (non-cash) asset impairment charges were as follows:

(millions)
Gulf of Mexico
Israel
Equatorial Guinea
Other International
Total

Year Ended December 31,
2016

2015

2017

$

$

63
—
—
7
70

$

$

— $
88
—
4
92

$

158
36
339
—
533

2017 Asset Impairments   During 2017, we recorded a non-cash property impairment charge related to our decision not to 
pursue development of the Troubadour natural gas discovery in the Gulf of Mexico.

2016 Asset Impairments  While the Leviathan natural gas development project, offshore Israel, was not formally sanctioned at 
December 31, 2016, in fourth quarter 2016, we selected the initial development concept for the first phase of development and 
wrote off $88 million associated with certain development concepts that were not selected.

2015 Asset Impairments  During 2015, certain properties were written down to their estimated fair values using a discounted 
cash flow model. The cash flow model included management’s estimates of future crude oil and natural gas production, 
commodity prices based on forward commodity price curves or contract prices as of the date of the estimate, operating and 
development costs, and discount rates. Impairment charges of $481 million resulted from reductions in the forward crude oil 
prices as of December 31, 2015. 

We also recorded impairment charges of approximately $47 million primarily related to revisions in expected field 
abandonment and other costs for properties in the Gulf of Mexico and offshore Israel and $5 million related to the pending sale 
of our interest in the Alon A and Alon C licenses, offshore Israel, which included the Karish and Tanin fields. 

112

 
Table of Contents

Index to Financial Statements

Noble Energy, Inc.
Notes to Consolidated Financial Statements

Note 6.  Capitalized Exploratory Well Costs and Undeveloped Leasehold Costs 

Capitalized Exploratory Well Costs   We capitalize exploratory well costs until a determination is made that the well has found 
proved reserves or is deemed noncommercial. If a well is deemed to be noncommercial, the well costs are immediately charged 
to exploration expense as dry hole cost. In addition, wells costs associated with a discovery may be charged to impairment 
expense if we choose not to pursue development activities.

Changes in capitalized exploratory well costs are as follows and exclude amounts that were capitalized and subsequently 
expensed in the same period:

(millions)
Capitalized Exploratory Well Costs, Beginning of Period

Year Ended December 31,
2016

2015

2017

$

768

$

1,353

$

1,337

Additions to Capitalized Exploratory Well Costs Pending Determination of Proved
Reserves
Divestitures and Other (1)
Reclassified to Proved Oil and Gas Properties Based on Determination of Proved 
Reserves or to Assets Held for Sale (2)
Capitalized Exploratory Well Costs Charged to Expense (3)
Capitalized Exploratory Well Costs, End of Period

$

20

—

(203)
(65)
520

$

84
(143)

(1)
(525)
768

$

123

—

(19)
(88)
1,353

(1)   The 2016 amount relates to the farm-down of a 35% interest in Block 12 offshore Cyprus to a new partner.
(2)   The 2017 amount relates to the approval and sanction of the first phase of development of the Leviathan field, offshore Israel. 

The 2015 amount relates primarily to US onshore exploration activity.

(3)   Capitalized exploratory well costs charged to expense are included within exploration or impairment expense in our consolidated 

statements of operations.

The 2017 amount relates primarily to the write-off of costs associated with the Troubadour natural gas discovery, Gulf of Mexico, for 
which we chose not to pursue development activities. See Note 5. Asset Impairments.

The 2016 amount relates primarily to discoveries offshore West Africa. Following review of additional 3D seismic data, we determined 
these discoveries were impaired in the current forward outlook for crude oil prices. We also incurred expenses associated with the 
Silvergate exploratory well in the Gulf of Mexico. The well did not encounter commercial hydrocarbons and was plugged and abandoned.

      The 2015 amount relates primarily to a property in northeast Nevada. After assessing its commercial viability in the current commodity 

price environment, we elected to discontinue exploration efforts. 

The following table provides an aging of capitalized exploratory well costs based on the date that drilling commenced, and the 
number of projects that have been capitalized for a period greater than one year:

(millions)
Exploratory Well Costs Capitalized for a Period of One Year or Less
Exploratory Well Costs Capitalized for a Period Greater Than One Year Since
Commencement of Drilling
Balance at End of Period
Number of Projects with Exploratory Well Costs That Have Been Capitalized for a
Period Greater Than One Year Since Commencement of Drilling

$

$

December 31,
2016

2017

2015

10

$

69

$

95

510
520

8

$

699
768

10

$

1,258
1,353

14

113

 
 
 
Table of Contents

Index to Financial Statements

Noble Energy, Inc.
Notes to Consolidated Financial Statements

The following table provides a further aging of those exploratory well costs that have been capitalized for a period greater than 
one year since the commencement of drilling as of December 31, 2017:

Country/Project
(millions)
Gulf of Mexico

Total

Suspended Since
2013 -
2014

2012 &
Prior

2015 -
2016

Katmai

$

147

$

56

$

91

$ —

Offshore Equatorial Guinea

Felicita (Block O)

Yolanda (Block I)
Offshore Cameroon

47

23

3

1

12

32

6

16

YoYo (YoYo Block)

Offshore Israel

55

4

6

45

Leviathan-1 Deep

Dalit

Offshore Cyprus

91

32

8

3

10

73

5

24

Progress

Progressing a development scenario for this 2014 crude
oil discovery. We are currently conducting feasibility
and front-end engineering and design studies on host
platform options.

Evaluating regional development scenarios for this 2008
gas discovery. During 2014, we conducted additional
seismic activity over Blocks I and O and in early 2016,
we began analyzing, interpreting and evaluating the
acquired seismic data.

A data exchange agreement for the 2007 Yolanda
condensate and natural gas discovery has been executed
between the governments of Equatorial Guinea and
Cameroon.  Our natural gas development team is
working with the governments of Equatorial Guinea and
Cameroon to evaluate natural gas monetization options
for both Yolanda and YoYo (Cameroon) discoveries.

A data exchange agreement for the 2007 YoYo
condensate and natural gas discovery has been executed
between the governments of Equatorial Guinea and
Cameroon. Our natural gas development team is
working with both governments to evaluate natural gas
monetization options for both Yolanda (Equatorial
Guinea) and YoYo discoveries. In June 2017, we
converted our mining concession license for the YoYo
block into a PSC.

The well did not reach the target interval in 2012. We
continue to reprocess and review seismic information
for this discovery, based on information obtained from
other recent discoveries in the region, and develop
future drilling plans to test this deep oil concept, which
is held by the Leviathan Development and Production
Leases.

Our future development plan was approved by the
Government of Israel to develop this 2009 natural gas
discovery with a tie-in to existing infrastructure at
Tamar. See also Note 4. Acquisitions, Divestitures and
Merger.

In 2016, we farmed-down a 35% interest in Block 12
and submitted an updated development plan. We
continue to work with the Government of Cyprus to
obtain approval of the development plan and the
subsequent issuance of an Exploitation License.
Receiving an Exploitation License will allow us and our
partners to perform the necessary engineering and
design studies and progress the project to final
investment decision. During 2017, we submitted an
updated development plan, progressed capital project
cost improvement and continued regional natural gas
marketing efforts.

Cyprus

Other

Projects less than $20 million

Total

97

18
510

$

15

52

30

(9)
81

$

21
203

$

6 Continuing to assess and evaluate wells.

$

226

Undeveloped Leasehold Costs   We reclassify undeveloped leasehold costs to proved property costs when proved reserves, 
including PUDs, become attributable to the property as a result of our exploration and development activities. On the other 

114

 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Index to Financial Statements

Noble Energy, Inc.
Notes to Consolidated Financial Statements

hand, if, based upon a change in exploration plans, timing and extent of development activities, availability of capital and 
suitable rig and drilling equipment, resource potential, comparative economics, changing regulations and/or other factors, an 
impairment is indicated, we record impairment expense related to the respective leases or licenses.

As of December 31, 2017, we had remaining undeveloped leasehold costs, to which proved reserves had not been attributed, of
$2.8 billion, including $1.6 billion related to Delaware Basin assets acquired in the Clayton Williams Energy Acquisition in 
2017, and $1.1 billion and $149 million attributable to Delaware Basin and Eagle Ford Shale assets, respectively, acquired in 
the Rosetta Merger in 2015. Undeveloped leasehold costs were derived from allocated fair values as a result of business 
combinations or other purchases of unproved properties and are subject to impairment testing.

The remaining balance of undeveloped leasehold costs as of December 31, 2017 included $44 million related to Gulf of Mexico 
unproved properties and $53 million related to international unproved properties. These costs pertain to acquired leases or 
licenses that are subject to expiration over the next several years unless production is established on units containing the 
acreage. These costs are evaluated as part of our periodic impairment review. 

During 2017, we completed geological evaluations of certain Gulf of Mexico leases and licenses and leases and licenses 
associated with other international unproved properties. We determined that several leases and licenses should be relinquished 
or exited. As a result, we recognized undeveloped leasehold impairment expense of $62 million primarily attributable to Gulf of 
Mexico leases. We recorded leasehold impairment expense of $93 million in 2016 and $21 million in 2015. This expense is 
included in exploration expense in the consolidated statements of operations.

Note 7.  Equity Method Investments 

Equity Method Investments    Investments accounted for under the equity method consist primarily of the following:

• 

• 

• 

• 

• 

50% interest in Advantage Pipeline, which owns and operates a 70-mile crude oil pipeline in Texas (See Note 4 – 
Acquisitions, Divestitures and Merger);

50% interest in CONE Gathering, which owns and operates natural gas gathering facilities servicing the Marcellus Shale  
(See Note 4 – Acquisitions, Divestitures and Merger);

34% interest in CONE Midstream, a public master limited partnership, which constructs, owns and operates natural gas 
gathering and other midstream energy assets in the Marcellus Shale;

45% interest in Atlantic Methanol Production Company, LLC (AMPCO), which owns and operates a methanol plant 
and related facilities in Equatorial Guinea; and

28% interest in Alba Plant LLC (Alba Plant), which owns and operates a liquefied petroleum gas (LPG) processing 
plant in Equatorial Guinea.

CONE Midstream Dropdown Transaction  In fourth quarter 2016, CONE Midstream completed an acquisition of midstream 
assets (dropdown) from CONE Gathering. CONE Gathering subsequently distributed $70 million cash and additional CONE 
Midstream common units to us. 

Equity method investments are as follows:

(millions)
Equity Method Investments
CONE Investments(1)
AMPCO
Alba Plant
Advantage Pipeline
Other
Total Equity Method Investments

December 31,

2017

2016

$

$

— $
129
80
70
26
305

$

172
120
82
—
26
400

(1)  CONE Investments include CONE Midstream and CONE Gathering. The investments are included in assets held for sale at December 31, 

2017.

Other  At December 31, 2017, consolidated retained earnings included $90 million related to the undistributed earnings of equity 
method investees.

The carrying value of our AMPCO investment was $12 million higher than the underlying net assets of the investee at 
December 31, 2017.  The difference is related to capitalized interest which is being amortized into earnings over the remaining 
useful life of the plant.

115

 
 
 
Table of Contents

Index to Financial Statements

Noble Energy, Inc.
Notes to Consolidated Financial Statements

Summarized, 100% combined financial information for equity method investees is as follows:

(millions)
Balance Sheet Information
Current Assets
Noncurrent Assets
Current Liabilities
Noncurrent Liabilities

(millions)
Statements of Operations Information
Operating Revenues
Operating Expenses
Operating Income
Other (Income) Net
Income Before Income Taxes
Income Tax Provision
Net Income

December 31,

2017

2016

$

$

390
588
171
90

313
1,390
149
256

Year Ended December 31,
2016

2015

2017

$

$

790
303
487
(15)
502
136
366

$

$

667
355
312
(7)
319
60
259

$

$

645
393
252
(9)
261
46
215

Note 8.  Derivative Instruments and Hedging Activities 

Objective and Strategies for Using Derivative Instruments  We may enter into crude oil and natural gas price hedging 
arrangements in an effort to mitigate the effects of commodity price volatility and enhance the predictability of cash flows 
relating to the marketing of a portion of our crude oil and natural gas production. The derivative instruments we use may 
include variable to fixed price commodity swaps, enhanced swaps, two-way and three-way collars, basis swaps and/or put 
options.

The fixed price swap and two-way collar contracts entitle us (floating price payor) to receive settlement from the counterparty 
(fixed price payor) for each calculation period in amounts, if any, by which the settlement price for the scheduled trading days 
applicable for each calculation period is less than the fixed strike price or floor price. We would pay the counterparty if the 
settlement price for the scheduled trading days applicable for each calculation period is more than the fixed strike price or 
ceiling price. The amount payable by us, if the floating price is above the fixed or ceiling price, is the product of the notional 
quantity per calculation period and the excess of the floating price over the fixed or ceiling price in respect of each calculation 
period. The amount payable by the counterparty, if the floating price is below the fixed or floor price, is the product of the 
notional quantity per calculation period and the excess of the fixed or floor price over the floating price in respect of each 
calculation period.

A three-way collar consists of a two-way collar contract combined with a put option contract sold by us with a strike price 
below the floor price of the two-way collar.  We receive price protection at the purchased put option floor price of the two-way 
collar if commodity prices are above the sold put option strike price. If commodity prices fall below the sold put option strike 
price, we receive the cash market price plus the delta between the two put option strike prices. This type of instrument allows us 
to capture more value in a rising commodity price environment, but limits our benefits in a downward commodity price 
environment. 

For put options, we typically pay a premium to the counterparty in exchange for the sale of the instrument. If the index price is 
below the floor price of the put option, we receive the difference between the floor price and the index price multiplied by the 
contract volumes less the option premium at the time of settlement. If the index price settles at or above the floor price of the 
put option, we pay only the put option premium at the time of settlement. We had no outstanding put options as of December 
31, 2017.

While these instruments mitigate the cash flow risk of future reductions in commodity prices, they may also curtail benefits 
during periods of increasing commodity prices.

See Note 13.  Fair Value Measurements and Disclosures for a discussion of methods and assumptions used to estimate the fair 
values of our derivative instruments.

116

 
 
 
 
 
 
 
Table of Contents

Index to Financial Statements

Noble Energy, Inc.
Notes to Consolidated Financial Statements

Counterparty Credit Risk  Derivative instruments expose us to counterparty credit risk. Our commodity derivative instruments 
are currently with a diversified group of major banks or market participants, and we monitor and manage our level of financial 
exposure. Our commodity derivative contracts are executed under master agreements which allow us, in the event of default, to 
elect early termination of all contracts with the defaulting counterparty. If we choose to elect early termination, all asset and 
liability positions with the defaulting counterparty would be net settled at the time of election. 

We monitor the creditworthiness of our commodity derivatives counterparties. However, we are not able to predict sudden 
changes in counterparties’ creditworthiness. In addition, even if such changes are not sudden, we may be limited in our ability 
to mitigate an increase in counterparty credit risk. 

Possible actions would be to transfer our position to another counterparty or request a voluntary termination of the derivative 
contracts resulting in a cash settlement. Should one of these financial counterparties not perform, we may not realize the benefit 
of some of our derivative instruments under lower commodity prices and could incur a loss. 

Unsettled Derivative Instruments  As of December 31, 2017, we had entered into the following crude oil derivative instruments:

Settlement
Period

2018

2018

2018

2018

2018

2018

2018

2018

2019

2019

2019

2019

Type of Contract

Three-Way Collars

Swaps

Two-Way Collars

Three-Way Collars

Swaps

Two-Way Collars

Three-Way Collars

Basis Swaps

Swaps

Swaps

Three-Way Collars

Basis Swaps

Index

NYMEX WTI

NYMEX WTI

NYMEX WTI

Dated Brent

ICE Brent

ICE Brent

ICE Brent
(1)

NYMEX WTI

ICE Brent

ICE Brent
(1)

Swaps

Collars

Weighte
d
Average
Fixed
Price

Weighte
d
Average
 Short 
Put
 Price

Weighte
d
Average
Floor
Price

Weighte
d
Average
 Ceiling
Price

Bbls Per
Day

10,000

$

— $ 45.50 $ 52.50 $ 69.09

24,000

18,000

3,000

2,000

2,000

5,000

12,000

3,000

5,000

3,000

12,000

57.09

—

—

59.00

—

—
(0.60)
55.07

57.00

—
(1.01)

—

—

— 50.42

40.00

50.00

—

—

— 50.00

43.00

50.00

—

—

—

—

—

—

—

58.82

70.41

—

55.25

59.50

—

—

—

43.00

50.00

64.07

—

—

—

(1)   We have entered into crude oil basis swap contracts in order to fix the differential between pricing in Midland, Texas, and Cushing, 

Oklahoma. The weighted average differential represents the amount of reduction to Cushing, Oklahoma, prices for the notional volumes 
covered by the basis swap contracts. 

As of December 31, 2017, we had entered into the following natural gas derivative instruments:

Settlement
Period

2018

Type of Contract

Three-Way Collars

Index

MMBtu
Per Day

Weighted
Average
Short Put
 Price

Collars
Weighted
Average
Floor
Price

Weighted
Average
Ceiling
Price

NYMEX HH

120,000 $

2.50 $

2.88 $

3.65

117

 
 
 
 
 
 
 
 
Table of Contents

Index to Financial Statements

Noble Energy, Inc.
Notes to Consolidated Financial Statements

Fair Value Amounts and Gains and Losses on Derivative Instruments   The fair values of derivative instruments in our consolidated 
balance sheets were as follows: 

Fair Value of Derivative Instruments (1)

Asset Derivative Instruments

Liability Derivative Instruments

December 31,
2017

December 31,
2016

December 31,
2017

December 31,
2016

Balance
Sheet
Location

Fair
Value

Balance
Sheet
Location

Fair
 Value

Balance
Sheet
Location

Fair
Value

Balance
Sheet
Location

Fair
Value

(millions)
Commodity 
Derivative 
Instruments

Total

Current
Assets
Noncurrent
Assets

$

$

Current
Assets
Noncurrent
Assets

2

—

2

$

$

Current
Liabilities
Noncurrent
Liabilities

—

—

—  

$

$

Current
Liabilities
Noncurrent
Liabilities

58

15

73

$

$

102

14

116

(1) See Note 1. Summary of Significant Accounting Policies – Derivative Instruments and Hedging Activities for a discussion of our netting 

policy.

The effect of derivative instruments on our consolidated statements of operations was as follows:

(millions)
Cash (Received) Paid in Settlement of Commodity Derivative Instruments

Crude Oil
Natural Gas
NGLs (1)

Total Cash Received in Settlement of Commodity Derivative Instruments
Non-cash Portion of (Gain) Loss on Commodity Derivative Instruments

Crude Oil
Natural Gas
NGLs (1)

Total Non-cash Portion of (Gain) Loss on Commodity Derivative Instruments
(Gain) Loss on Commodity Derivative Instruments

Crude Oil
Natural Gas
NGLs (1)

Total (Gain) Loss on Commodity Derivative Instruments

Year Ended December 31,
2016

2015

2017

$

$

(14) $
1
—
(13)

18
(68)
—
(50)

4
(67)
—
(63) $

(499) $
(70)
—
(569)

(844)
(147)
(18)
(1,009)

582
126
—
708

83
56
—
139

$

423
65
20
508

(421)
(82)
2
(501)

(1)  Amounts for NGLs relate to commodity derivative instruments, acquired in the Rosetta Merger, which expired as of December 31, 2015.

118

 
 
 
 
 
 
 
 
 
Table of Contents

Index to Financial Statements

Noble Energy, Inc.
Notes to Consolidated Financial Statements

Note 9.  Asset Retirement Obligations 

Asset retirement obligations (AROs) consist primarily of estimated costs of dismantlement, removal, site reclamation and 
similar activities associated with our oil and gas properties. Changes in AROs were as follows:

(millions)
Asset Retirement Obligations, Beginning Balance
Liabilities Incurred
Liabilities Settled
Revision of Estimate
Reclassification to Liabilities Associated with Assets Held for Sale
Accretion Expense
Asset Retirement Obligations, Ending Balance

Year Ended December 31,

2017

2016

$

$

935
94
(82)
(65)
(54)
47
875

$

$

989
21
(120)
(3)
—
48
935

Year Ended December 31, 2017   Liabilities incurred include $63 million related to the Clayton Williams Energy Acquisition 
and $31 million primarily for other US onshore wells and midstream facilities placed into service.

Liabilities settled include $43 million related to abandonment of US onshore properties, $19 million related to properties sold in 
the Greeley Crescent (DJ Basin) acreage divestiture, $12 million related to properties sold in the Marcellus Shale upstream 
divestiture and $8 million related to other offshore domestic and international properties. 

Revisions of estimates include a $42 million decrease related to changes in cost and timing associated with the North Sea 
abandonment project and a $38 million decrease for US onshore and Gulf of Mexico properties, partially offset by an increase 
of $15 million for West Africa.

In 2017, we also transferred $42 million and $12 million of ARO liabilities associated with Southwest Royalties and Tamar 
field, offshore Israel, respectively, to liabilities associated with assets held for sale. Refer to Item 8. Financial Statements and 
Supplementary Data - Note 4. Acquisitions, Divestitures and Merger.

Year Ended December 31, 2016   Liabilities incurred were due to new wells and facilities placed into service for US onshore, 
Gulf of Mexico, and offshore Israel. 

Liabilities settled were related to wells and facilities permanently abandoned at the end of their useful lives and to assets sold. 
Settlements included $65 million related to abandonment of Gulf of Mexico properties, $49 million related to US onshore 
properties abandoned or sold, $5 million related to offshore Israel properties and $1 million related to the North Sea. 

119

 
Table of Contents

Index to Financial Statements

Noble Energy, Inc.
Notes to Consolidated Financial Statements

Note 10.  Long-Term Debt 

Our debt consists of the following:

(millions, except percentages)
Revolving Credit Facility, due August 27, 2020
Noble Midstream Services Revolving Credit Facility,
due September 20, 2021
Term Loan Facility, due January 6, 2019 (1)
Leviathan Term Loan Facility, due February 23, 2025
Senior Notes, due March 1, 2019 (2)
Senior Notes, due May 1, 2021
Senior Notes, due December 15, 2021
Senior Notes, due June 1, 2022 (1)
Senior Notes, due October 15, 2023
Senior Notes, due November 15, 2024
Senior Notes, due April 1, 2027
Senior Notes, due January 15, 2028 (2)
Senior Notes, due March 1, 2041
Senior Notes, due November 15, 2043
Senior Notes, due November 15, 2044
Senior Notes, due August 15, 2047 (2)
Other Senior Notes and Debentures (3)
Capital Lease and Other Obligations (4)
Total
Unamortized Discount
Unamortized Premium (2)
Unamortized Debt Issuance Costs
Total Debt, Net of Discount
Less Amounts Due Within One Year

Capital Lease and Other Obligations
Long-Term Debt Due After One Year

December 31,
2017

December 31,
2016

Debt

Interest Rate

Debt

Interest Rate

—%

—%
2.01%
—
8.25%
5.63%
4.15%
5.88%
7.25%
3.90%
8.00%
—%
6.00%
5.25%
5.05%
—%
7.13%
—%

$

230

2.27%  

$

—

85
—
—
—
379
1,000
—
100
650
250
600
850
1,000
850
500
92
273
6,859
(24)
12
(40)
6,807

(61)
6,746

$

$

$

2.49%
—%
—%
—%
5.63%
4.15%
—%
7.25%
3.90%
8.00%
3.85%
6.00%
5.25%
5.05%
4.95%
7.13%
—%

$

$

$

—
550
—
1,000
379
1,000
18
100
650
250
—
850
1,000
850
—
92
375
7,114
(23)
17
(34)
7,074

(63)
7,011

(1) 

(2)  

(3)  

In fourth quarter 2017, we repaid $550 million of borrowings under the Term Loan Facility and $18 million of our outstanding Senior 
Notes due June 1, 2022. 

In third quarter 2017, we redeemed all of our Senior Notes due March 1, 2019 and issued Senior Notes due January 15, 2028 and August 
15, 2047. 

Includes $8 million of Senior Notes due June 1, 2024 and $84 million of Senior Debentures due August 1, 2097. The weighted average 
interest rate for these instruments is 7.13%.

(4)   The reduction from 2016 includes $41 million related to other obligations for drilling commitments assumed by the acquirer of the 

Marcellus Shale upstream assets and $60 million of capital lease principal payments.

All of our long-term debt is senior unsecured debt and is, therefore, pari passu with respect to the payment of both principal 
and interest. The indenture documents of each of our notes provide that we may prepay the instruments by creating a 
defeasance trust. The defeasance provisions require that the trust be funded with securities sufficient, in the opinion of a 
nationally recognized accounting firm, to pay all scheduled principal and interest due under the respective agreements. Interest 
on each of these issues is payable semi-annually. 

Revolving Credit Facility  Our Revolving Credit Facility (i) provides for facility fee rates that range from 10 basis points to 25 
basis points per year depending upon our credit rating, (ii) includes sub-facilities for short-term loans and letters of credit up to 
an aggregate amount of $500 million under each sub-facility and (iii) provides for interest rates that are based upon the 
Eurodollar rate plus a margin that ranges from 90 basis points to 150 basis points depending upon our credit rating.

120

 
 
 
   
 
   
 
   
 
 
   
 
 
   
 
   
 
Table of Contents

Index to Financial Statements

Noble Energy, Inc.
Notes to Consolidated Financial Statements

The Revolving Credit Facility requires that our total debt to capitalization ratio (as defined in the Revolving Credit Facility), 
expressed as a percentage, not exceed 65% at any time. A violation of this covenant could result in a default under the Credit 
Agreement, which would permit the participating banks to restrict our ability to access the Revolving Credit Facility and 
require the immediate repayment of any outstanding advances under the Revolving Credit Facility. As of December 31, 2017, 
we were in compliance with our debt covenants.

The Revolving Credit Facility is available for general corporate purposes. Certain lenders that are a party to the Revolving 
Credit Facility have in the past performed, and may in the future from time to time perform, investment banking, financial 
advisory, lending or commercial banking services for us for which they have received, and may in the future receive, customary 
compensation and reimbursement of expenses. 

Noble Midstream Services Revolving Credit Facility  On September 20, 2016, Noble Midstream Services LLC (Noble 
Midstream Services), a subsidiary of Noble Midstream Partners, entered into a credit agreement for a $350 million revolving 
credit facility (Noble Midstream Services Revolving Credit Facility). The Noble Midstream Services Revolving Credit Facility 
has a five year maturity and includes a letter of credit sublimit of up to $100 million for issuances of letters of credit. The 
borrowing capacity on the Noble Midstream Services Revolving Credit Facility may be increased by an additional $350 
million, subject to certain conditions, and is available to fund working capital and to finance acquisitions and other capital 
expenditures of Noble Midstream Partners. 

Borrowings by Noble Midstream Services under the Noble Midstream Services Revolving Credit Facility bear interest at a rate 
equal to an applicable margin plus, at Noble Midstream Service's option, either:

• 

• 

in the case of base rate borrowings, a rate equal to the highest of (1) the prime rate, (2) the greater of the federal funds 
rate or the overnight bank funding rate, plus 0.5% and (3) the London interbank offered rate (LIBOR) for an interest 
period of one month plus 1.00%; or
in the case of LIBOR borrowings, the offered rate per annum for deposits of dollars for the applicable interest period.

The Noble Midstream Services Revolving Credit Facility includes certain financial covenants as of the end of each fiscal 
quarter, including a (1) consolidated leverage ratio to consolidated adjusted earnings before interest expense, income taxes, 
depreciation, depletion, and amortization (EBITDA) and (2) consolidated interest coverage ratio (each covenant as described in 
the Noble Midstream Services Revolving Credit Facility). All obligations of Noble Midstream Services, as the borrower under 
the Noble Midstream Services Revolving Credit Facility, are guaranteed by Noble Midstream Partners and all wholly-owned 
material subsidiaries of Noble Midstream Partners. Debt issuance costs associated with this facility were de minimis.

On January 31, 2018, in connection with the acquisition of Saddle Butte, Noble Midstream Partners drew an additional $300 
million under the Noble Midstream Services Revolving Credit Facility and partially exercised the accordion feature, increasing 
the commitments under the credit agreement to $530 million. 

Senior Notes Issuance and Completed Tender Offer   On August 15, 2017, we issued $600 million of 3.85% senior unsecured 
notes that will mature on January 15, 2028 and $500 million of 4.95% senior unsecured notes that will mature on August 15, 
2047. Interest on the 3.85% senior notes and 4.95% senior notes is payable semi-annually beginning January 15, 2018 and 
February 15, 2018, respectively. We may redeem some or all of the senior notes at any time at the applicable redemption price, 
plus accrued interest, if any. The senior notes were issued at a discount of $4 million and debt issuance costs incurred totaled 
$11 million, both of which are reflected as a reduction of long-term debt and are amortized over the life of the notes. Proceeds 
of $1 billion from the issuance of senior notes were used solely to fund the tender offer and the redemption of $1 billion of our 
8.25% senior notes due March 1, 2019. As a result, we paid a premium of $96 million to the holders of the 8.25% senior notes 
and recognized a loss of $98 million in third quarter 2017, which is reflected in other non-operating (income) expense in our 
consolidated statements of operations. 

Leviathan Term Loan Facility   On February 24, 2017, Noble Energy Mediterranean Ltd. (NEML), a wholly-owned subsidiary 
of Noble Energy, entered into a facility agreement (Leviathan Term Loan Facility) which provides for a limited recourse 
secured term loan facility with an aggregate principal borrowing amount of up to $1.0 billion, of which $625 million is initially 
committed. Any amounts borrowed under the Leviathan Term Loan Facility will be available to fund a portion of our share of 
costs for the initial phase of development of the Leviathan field offshore Israel. 

Any amounts borrowed will be subject to repayment on a quarterly basis following production startup for the first phase of 
development, which is targeted for the end of 2019. Repayment will be in accordance with an amortization schedule set forth in 
the facility agreement, with a final balloon payment of no more than 35% of the loans outstanding. The Leviathan Term Loan 
Facility matures on February 23, 2025 and we can prepay borrowings at any time, in whole or in part, without penalty. The 
Leviathan Term Loan Facility contains customary representations and warranties, affirmative and negative covenants, and 

121

Table of Contents

Index to Financial Statements

Noble Energy, Inc.
Notes to Consolidated Financial Statements

events of default and also includes a prepayment mechanism that reduces the final balloon amount if cash flows exceed certain 
defined coverage ratios.

Any amounts borrowed will accrue interest at LIBOR, plus a margin of 3.50% per annum prior to production startup, 3.25% 
during the period following production startup until the last two years of maturity, and 3.75% during the last two years until the 
maturity date. We are also required to pay a commitment fee equal to 1.00% per annum on the unused and available 
commitments under the Leviathan Term Loan Facility until the beginning of the repayment period.

The Leviathan Term Loan Facility is secured by a first priority security interest in substantially all of NEML's interests in the 
Leviathan field and its marketing subsidiary, and in assets related to the initial phase of the project. All of NEML’s revenues 
from the first phase of Leviathan development will be deposited in collateral accounts, and we will be required to maintain a 
debt service reserve account for the benefit of the lenders under the Leviathan Term Loan Facility. Once servicing accounts are 
replenished and debt service made, all remaining cash will be available to us and our subsidiaries.

Term Loan Facility and Completed Tender Offers  On January 6, 2016, we entered into a term loan agreement (Term Loan 
Facility), which provided for a three-year term loan facility for a principal amount of $1.4 billion. Provisions of the Term Loan 
Facility were consistent with those in the Revolving Credit Facility. Borrowings under the Term Loan Facility could be prepaid 
prior to maturity without premium. The Term Loan Facility accrued interest, at our option, at either (a) a base rate equal to the 
highest of (i) the rate announced by Citibank, N.A., as its prime rate, (ii) the Federal Funds Rate plus 0.5%, and (iii) a LIBOR 
plus 1.0%, plus a margin that ranged from 10 basis points to 75 basis points depending upon our credit rating, or (b) a LIBOR, 
plus a margin that ranged from 100 basis points to 175 basis points depending upon our credit rating.

Borrowings under the Term Loan Facility were used solely to fund tender offers for approximately $1.38 billion of notes 
assumed in the Rosetta Merger in 2015. As a result of the tender offers, we recognized a gain of $80 million in first quarter 
2016 which is reflected in other non-operating (income) expense in our consolidated statements of operations. In fourth quarter 
2016, we prepaid $850 million of the amount outstanding under the Term Loan Facility from cash on hand. In fourth quarter 
2017, we repaid the remaining outstanding balance of $550 million under this facility using proceeds received from the sale of 
non-core Greeley Crescent and Bronco acreage in the DJ Basin. 

Fair Value of Debt   See Note 13.  Fair Value Measurements and Disclosures for a discussion of methods and assumptions used 
to estimate the fair values of debt.

Capital Lease and Other Obligations  The amount of the capital lease obligation is based on the discounted present value of 
future minimum lease payments, and therefore does not reflect future cash lease payments.  Amounts due within one year equal 
the amount by which the capital lease obligation is expected to be reduced during the next 12 months. See Note 17. 
Commitments and Contingencies for future capital lease payments.

Annual Debt Maturities  Annual maturities of outstanding debt, excluding capital lease payments, as of December 31, 2017 are 
as follows:

(millions)
2018
2019
2020
2021
2022
Thereafter
Total

Debt
Principal
Payments

$

$

—
—
230
1,464
—
4,892
6,586

Note 11.  Income Taxes                       

Recent Changes in US Tax Law  On December 22, 2017, the US Congress enacted the Tax Reform Legislation, which made 
significant changes to US federal income tax law, including a reduction in the federal corporate tax rate to 21% effective 
January 1, 2018.  Under US GAAP, we are required to recognize the effect of a rate change on deferred tax assets and liabilities 
in the period in which the tax rate change is enacted. Therefore, the rate change enacted by the Tax Reform Legislation resulted 
in the recognition of a deferred tax benefit of $500 million at December 31, 2017.   

Further, the Tax Reform Legislation provides for a transition tax (toll tax) on a one-time “deemed repatriation” of accumulated 
foreign earnings for the year ended December 31, 2017. Based on current interpretations of the law, we have recognized 
additional taxable income of $767 million associated with the transition tax, which is fully offset by current year net operating 

122

Table of Contents

Index to Financial Statements

Noble Energy, Inc.
Notes to Consolidated Financial Statements

losses and have recorded corresponding deemed foreign tax credits of $164 million, against which we have recorded a full 
valuation allowance.

The Tax Reform Legislation also repealed corporate alternative minimum tax (AMT) for tax years beginning January 1, 2018, 
and provides that existing AMT credit carryovers are refundable beginning in 2018. We have approximately $3 million of AMT 
credit carryovers that are expected to be fully refunded by 2022.  

In addition, the Tax Reform Legislation preserves deductibility of intangible drilling costs and provides for 100% bonus 
depreciation on tangible personal property expenditures through 2022. The bonus depreciation percentage is phased down from 
100% beginning in 2023 to 0% for years after 2026. 

The Tax Reform Legislation is a comprehensive bill containing other provisions, such as limitations on the deductibility of 
interest expense and certain executive compensation, that are not expected to materially affect us. The ultimate impact of the 
Tax Reform Legislation may differ from our estimates due to changes in interpretations and assumptions made by us, as well as 
additional regulatory guidance that may be issued. In particular, our estimate of the impact of the toll tax is a provisional 
amount, based on current legal interpretations. This amount may be adjusted in future periods, as an adjustment to income tax 
expense or benefit, in the period in which the final amounts are determined.

Income Tax Disclosures   

Components of income (loss) from operations before income taxes are as follows:

Year Ended December 31,
2016

2015

2017

(2,831) $
640
(2,191) $

(1,859) $
87
(1,772) $

(2,338)
119
(2,219)

Year Ended December 31,
2016

2015

2017

$

$

$

$
$

(11)
1
96
86

(1,258)
(8)
39
(1,227)
(1,141)
52.1%

$

$

$

$
$

(4)
5
196
197

(784)
(24)
(176)
(984)
(787)
44.4%

(1)
—
107
106

216
(5)
(95)
116
222
(10.0)%

(millions)
Domestic
Foreign
Total

The income tax provision (benefit) consists of the following:

(millions)
Current Taxes
Federal
State
Foreign
Total Current
Deferred Taxes
Federal
State
Foreign
Total Deferred

Total Income Tax (Benefit) Provision Attributable to Noble Energy
Effective Tax Rate

$

$

$

$

$

$
$

123

 
 
 
 
 
Table of Contents

Index to Financial Statements

Noble Energy, Inc.
Notes to Consolidated Financial Statements

A reconciliation of the federal statutory tax rate to the effective tax rate is as follows:

(percentages)
Federal Statutory Rate (1)
Effect of
Earnings of Equity Method Investees
Noncontrolling Interests
US and Foreign Statutory Rate Change (1)
Transition Tax (1)
State Taxes, Net of Federal Benefit
Difference Between US and Foreign Rates
Foreign Exploration Loss
Change in Valuation Allowance (1)
Oil Profits Tax - Israel
Tax Contingency
Accumulated Undistributed Foreign Earnings (1)
Goodwill Impairment
Other, Net
Effective Rate

Year Ended December 31,
2016

2015

2017

35.0%

35.0%

35.0 %

1.9
1.1
23.5
(4.8)
0.3
1.8
—
(17.4)
(0.1)
0.1
11.0
—
(0.3)
52.1%

1.0
0.4
1.6
—
1.3
(0.1)
0.1
(2.0)
—
0.2
7.2
—
(0.3)
44.4%

0.6
—
—
—
0.3
2.6
2.7
—
0.1
0.4
(37.7)
(12.3)
(1.7)
(10.0)%

(1)    See Recent Changes in US Tax Law, above. Rate will decrease to 21.0% for fiscal year 2018. In addition, see discussion regarding 

accumulated undistributed foreign earnings above.

Deferred tax assets and liabilities resulted from the following:

(millions)
Deferred Tax Assets
Loss Carryforwards
Employee Compensation and Benefits
Mark to Market of Commodity Derivative Instruments
Foreign Tax Credits
Other
Total Deferred Tax Assets
Valuation Allowance - Foreign Loss Carryforwards and Foreign Tax Credits
Net Deferred Tax Assets
Deferred Tax Liabilities
Accumulated Undistributed Foreign Earnings (1)
Property, Plant and Equipment, Principally Due to Differences in Depreciation, Amortization,
Lease Impairment and Abandonments
Total Deferred Tax Liability
Net Deferred Tax Liability

December 31,

2017

2016

$

$

$

$
$

$

$

$

902
97
7
366
104
1,476
(549)
927

—

474
150
44
—
49
717
(242)
475

(240)

(2,029)
(2,029) $
(1,102) $

(2,054)
(2,294)
(1,819)

(1)  At December 31, 2017, we reversed the deferred tax liability associated with the removal of the assertion of indefinitely reinvested 

earnings, resulting in recognition of a deferred tax benefit of $240 million. 

Net deferred tax assets and liabilities were classified in the consolidated balance sheets as follows:

(millions)

Deferred Income Tax Asset - Noncurrent

Deferred Income Tax Liability - Noncurrent

Net Deferred Tax Liability

124

December 31,

2017

2016

$

$

$

25
(1,127)
(1,102) $

—
(1,819)
(1,819)

 
 
 
 
 
Table of Contents

Index to Financial Statements

Noble Energy, Inc.
Notes to Consolidated Financial Statements

Deferred Tax Assets   Our estimated US federal income tax net operating loss (NOL) carryforwards totaled approximately $3.2 
billion at December 31, 2017. Included in the resulting deferred tax assets are acquired NOLs associated with the Clayton 
Williams Energy Acquisition in 2017 and the Rosetta Merger in 2015.

In assessing the realizability of deferred tax assets, we consider whether it is more likely than not that some portion or all of the 
deferred tax assets will not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future 
taxable income in the appropriate tax jurisdictions during the periods in which those temporary differences become deductible. 
We consider the scheduled reversal of deferred tax liabilities, current financial position, results of operations, projected future 
taxable income and tax planning strategies as well as current and forecasted business economics in the oil and gas industry. 
Based on the level of historical taxable income and projections for future taxable income, we believe it is more likely than not 
that we will realize the benefits of these NOL carryforwards. However, the amount of the deferred tax assets considered 
realizable could be reduced in the future if estimates of future taxable income during the carryforward period are reduced.

We currently have a valuation allowance on the deferred tax assets associated with foreign loss carryforwards and foreign tax 
credits. The valuation allowance on foreign loss carryforwards totaled $183 million in 2017 and $242 million in 2016. The 
changes to the valuation allowance for the loss carryforwards between periods was attributable to the offset of the valuation 
allowance against the NOL in a jurisdiction in which we are no longer active. Deemed foreign tax credits of $164 million were 
recognized along with the additional taxable income associated with the transition tax. A full valuation allowance of $366 
million has been recorded against all foreign tax credits based on current interpretation of the Tax Reform Legislation and the 
expected future utilization of NOL carryforwards.  

Clayton Williams Energy Acquisition   On April 24, 2017, we completed the Clayton Williams Energy Acquisition. For federal 
income tax purposes, the transaction qualified as a tax free merger and we acquired carryover tax basis in Clayton Williams 
Energy's assets and liabilities. After the fair market valuation, we have currently recorded an opening balance sheet deferred tax 
liability of $307 million, adjusted for the new US statutory tax rate, which includes a deferred tax asset for federal pre-tax net 
operating losses of approximately $450 million. The merger resulted in a change of control for federal income tax purposes, and 
the NOL usage will be subject to an annual limitation in part based on Clayton Williams Energy's value at the date of the 
merger. We anticipate full utilization of the total NOL prior to expiration.  

Accumulated Undistributed Earnings of Foreign Subsidiaries   In 2015, we changed our indefinite reinvestment assertion (APB 
23 assertion) based on the continued and prolonged decline in global commodity prices and an evaluation of our operations’ 
anticipated capital requirements and projected foreign cash positions given the adoption of the Israel Natural Gas Framework in 
December 2015.

During 2016, we reviewed capital requirements and foreign cash positions, and reduced the deferred tax liability associated 
with unremitted earnings, net of foreign tax credits, to $240 million as of December 31, 2016. 

In 2017, as a result of Tax Reform Legislation, which establishes a new territorial tax regime, the deferred tax liability recorded 
as of December 31, 2016 was reversed, resulting in a deferred tax benefit of $240 million for the year ended December 31, 
2017. We do not expect a withholding tax impact upon actual distribution of earnings and as such have not recorded any 
additional tax associated with the unremitted earnings.  

Effective Tax Rate  Our effective tax rate increased in 2017 as compared with 2016 primarily due to the recognition of a 
deferred tax benefit related to the Tax Reform Legislation. The deferred tax benefit resulted from the revaluation of the ending 
deferred tax liability at the reduced future tax rate and the transition to the new territorial tax regime. 

Our effective tax rate increased in 2016 as compared with 2015 primarily due to adjustments to deferred taxes for removal of 
the APB 23 assertion, as noted above, decreased earnings in foreign jurisdictions with rates that vary from the US statutory rate, 
a decrease in the Israeli income tax rate, and the 2015 impact of foreign dividend repatriation and goodwill impairment.  

Israeli Tax Law  Effective December 21, 2016, the Israeli government decreased the corporate income tax rate from 25% to 
24% for 2017 and announced a further rate decrease from 24% to 23% effective January 2018. The change decreased the 
deferred tax expense for 2017 by $12 million. 

Furthermore, our Israeli operations are subject to the Natural Resources Profits Taxation Law, 2011 (the Law), which imposes a 
separate additional tax on profits from oil and gas activities (Profits Tax). The Profits Tax is calculated by dividing net 
accumulated revenue generated by each separate project by its cumulative investments as defined within the Law. Once the 
revenue factor (R Factor) reaches 1.5, a tax rate of 20% is imposed; as the ratio increases to a maximum of 2.3, the Profits Tax 
increases progressively up to a maximum rate of 50%. The Profits Tax provides for a corporate tax rate adjustment based on the 
corporate income tax rate, which is currently 23%. To the extent the corporate income tax rate exceeds 18%, a reduction in the 
Profits Tax rate is calculated. At the current corporate tax rate, the Profits Tax rate is 46.8%. The Profits Tax is deductible for 
corporate Israeli tax purposes. Our Tamar and Leviathan projects are both subject to the Profits Tax and are expected to pay at 
the maximum rate. 

125

Table of Contents

Index to Financial Statements

Noble Energy, Inc.
Notes to Consolidated Financial Statements

Unrecognized Tax Benefits   We file a consolidated income tax return in the US federal jurisdiction, and we file income tax 
returns in various states and foreign jurisdictions. Our income tax returns are routinely audited by the applicable revenue 
authorities, and provisions are made in the financial statements for differences between positions taken in tax returns and 
amounts recognized in the financial statements in anticipation of audit results.  

In our major tax jurisdictions, the earliest years remaining open to examination are:  US - 2014, Israel - 2015 and Equatorial 
Guinea - 2012. 

Our policy is to recognize any interest and penalties related to unrecognized tax benefits in income tax expense.

A reconciliation of our beginning and ending amounts of unrecognized tax benefits follows:

(millions)
Unrecognized Tax Benefits, Beginning Balance
Reductions for Tax Positions of Prior Years
Unrecognized Tax Benefits, Ending Balance

Twelve Months Ended
December 31, 2017

$

$

3
(3)
—

The changes to our unrecognized tax benefits during 2017 primarily resulted from changes in various foreign tax return filings, 
positions and audit settlements. The adjustments to our reserves for uncertain tax positions had a de minimis impact on our net 
income.

During 2017, we recognized and accrued a de minimis amount of interest and no penalties.

Note 12.  Stock-Based and Other Compensation Plans 

We recognized total stock-based compensation expense as follows:

(millions)
Stock-Based Compensation Expense Included in:
General and Administrative Expense
Exploration Expense and Other
Total Stock-Based Compensation Expense
Tax Benefit Recognized

Year Ended December 31,
2016

2015

2017

$

$
$

$

56
48
104
$
(36) $

$

62
15
77
$
(27) $

50
36
86
(30)

Stock Option and Restricted Stock Plans  Our stock option and restricted stock plans are described below.

2017 Long-Term Incentive Plan  On April 25, 2017, our stockholders approved the Noble Energy, Inc. 2017 Long-Term 
Incentive Plan (the 2017 Plan). Upon stockholder approval, the 2017 Plan superceded and replaced the Noble Energy, Inc. 1992 
Stock Option and Restricted Stock Plan, as amended (the 1992 Plan) which was frozen so that no future grants would be made 
under the 1992 Plan. The 1992 Plan continues to govern awards that were outstanding as of the date of its suspension, which 
remain in effect pursuant to their terms. Under the 2017 Plan, the Compensation, Benefits and Stock Option Committee of the 
Board of Directors (the Committee) may grant stock options, stock appreciation rights, restricted stock, restricted stock units, 
performance awards, stock awards and other incentive awards to our officers or other employees and those of our subsidiaries. 
The maximum number of shares that may be granted under the 2017 Plan is 29 million shares of common stock.  At December 
31, 2017, 28,987,609 shares of our common stock were reserved for issuance, including 28,972,832 shares available for future 
grants and awards, under the 2017 Plan.

Stock options are issued with an exercise price equal to the fair market value of our common stock on the date of grant, and are 
subject to such other terms and conditions as may be determined by the Committee. Unless granted by the Committee for a 
shorter term, the options expire 10 years from the grant date. Option grants generally vest ratably over a three-year period.

Restricted stock awards made under the 2017 Plan are subject to such restrictions, terms and conditions, including forfeitures, if 
any, as may be determined by the Committee. During the period in which such restrictions apply, unless specifically provided 
otherwise in accordance with the terms of the 2017 Plan, the recipient of restricted stock would be the record owner of the 
shares and have all the rights of a stockholder with respect to the shares, including the right to vote and the right to receive 
dividends or other distributions made or paid with respect to the shares. The dividends or other distributions pertaining to the 
restricted shares will be held by the Company until the restriction period ends and the shares vest or forfeit. If the restricted 
shares forfeit, then the recipient shall not be entitled to receive the dividend or distribution, which will transfer to the Company. 
Restricted stock awards with a time-vested restriction vest over a two or three-year period. Performance share awards cliff vest 
after a three-year period if the Company achieves certain levels of total shareholder return relative to a pre-determined industry 
peer group.

126

 
 
 
 
Table of Contents

Index to Financial Statements

Noble Energy, Inc.
Notes to Consolidated Financial Statements

2015 Stock Plan for Non-Employee Directors  The 2015 Stock Plan for Non-Employee Directors of Noble Energy, Inc., as 
amended (the 2015 Plan) provides for grants of stock options and awards of restricted stock to our non-employee directors. The 
2015 Plan superseded and replaced the 2005 Stock Plan for Non-Employee Directors of Noble Energy, Inc. The total number of 
shares of our common stock that may be issued under the 2015 Plan is 708,996. At December 31, 2017, 674,025 shares of our 
common stock were reserved for issuance, including 463,096 shares available for future grants and awards, under the 2015 
Plan.

Stock Option Grants  The fair value of each stock option granted is estimated on the date of grant using a Black-Scholes-
Merton option valuation model that used the assumptions described below: 

•  Expected term   The expected term represents the period of time that options granted are expected to be outstanding, 

which is the grant date to the date of expected exercise or other expected settlement for options granted. The 
hypothetical midpoint scenario we use considers our actual exercise and post-vesting cancellation history and 
expectations for future periods, which assumes that all vested, outstanding options are settled halfway between the 
current date and their expiration date.

•  Expected volatility   The expected volatility represents the extent to which our stock price is expected to fluctuate 

between the grant date and the expected term of the award. We use the historical volatility of our common stock for a 
period equal to the expected term of the option prior to the date of grant. We believe that historical volatility produces an 
estimate that is representative of our expectations about the future volatility of our common stock over the expected 
term.

•  Risk-free rate   The risk-free rate is the implied yield available on US Treasury securities with a remaining term equal to 
the expected term of the option. We base our risk-free rate on a weighting of five and seven year US Treasury securities 
as of the date of grant.

•  Dividend yield   The dividend yield represents the value of our stock’s annualized dividend as compared to our stock’s 
average price for the three-year period ended prior to the date of grant. It is calculated by dividing one full year of our 
expected dividends by our average stock price over the three-year period ended prior to the date of grant.

The assumptions used in valuing stock options granted were as follows:

(weighted averages)
Expected Term (in Years)
Expected Volatility
Risk-Free Rate
Expected Dividend Yield
Weighted Average Grant-Date Fair Value

Stock option activity was as follows:

Outstanding at December 31, 2016
Granted
Exercised
Forfeited
Outstanding at December 31, 2017
Exercisable at December 31, 2017

Year Ended December 31,
2016

2015

2017

6.4
33.2%
2.2%
0.9%

6.3
32.4%
1.6%
0.7%

6.0
32.6%
1.4%
1.2%

$

13.26

$

10.10

$

13.93

Weighted
Average
Exercise
 Price
(per share)
43.49
$
39.40
37.57
43.93
43.42
44.98

$
$

Options

15,088,862
1,819,819
(382,882)
(976,577)
15,549,222
12,101,890

Weighted
Average
Remaining
 Contractual 
Term
(in years)

Aggregate
 Intrinsic 
Value
(in millions)

5.0
4.0

$
$

6
6

The total intrinsic value of options exercised was $4 million in 2017, $10 million in 2016 and $7 million in 2015. As of 
December 31, 2017, $21 million of compensation cost related to unvested stock options granted under the Plans remained to be 
recognized. The cost is expected to be recognized over a weighted-average period of 1.3 years. We issue new shares of our 
common stock to settle option exercises. Dividends are not paid on unexercised options.

127

 
 
Table of Contents

Index to Financial Statements

Noble Energy, Inc.
Notes to Consolidated Financial Statements

Restricted Stock Awards   Awards of time-vested restricted stock (shares subject to service conditions) are valued at the price 
of our common stock at the date of award. The fair value of the market based restricted stock awards was estimated on the date 
of award using a Monte Carlo valuation model that uses the assumptions in the following table. The Monte Carlo valuation 
model is based on random projections of stock price paths and must be repeated numerous times to achieve a probabilistic 
assessment. Expected volatility represents the extent to which our stock price is expected to fluctuate between now and the 
award’s anticipated term. We use the historical volatility of Noble Energy common stock for the three-year period ended prior 
to the date of award. The risk-free rate is based on a three-year period for US Treasury securities as of the year ended prior to 
the date of award.

The assumptions used in valuing market based restricted stock awards granted were as follows:

Number of Simulations
Expected Volatility
Risk-Free Rate

Restricted stock activity was as follows:

Year Ended December 31,

2017
500,000

35%
1.5%

2016
500,000

38%
1.0%

2015
500,000

30%
0.8%

Subject to Time
Vesting

Subject to Market
Conditions

Number of
Shares

Weighted
Average
Award Date
 Fair Value
(per share)

Number of
Shares

Weighted
Average
Award Date
Fair Value
(per share)
$

Outstanding at December 31, 2016
Awarded (1)
Vested (1)
Forfeited
Outstanding at December 31, 2017
(1)  During 2017, we awarded approximately 1.9 million shares of restricted stock for the conversion of Clayton Williams Energy shares into 
Noble Energy shares as part of the Clayton Williams Energy Acquisition. All awards subsequently vested during 2017. These awards are 
included in the above table. See Note 3.  Clayton Williams Energy Acquisition.

1,371,780
3,201,504
(2,515,383)
(218,164)
1,839,737

1,502,992
464,608
(219,883)
(535,012)
1,212,705

36.37
36.26
34.93
37.66
37.21

27.43
24.25
44.61
33.12
25.55

$

$

$

The total fair value of restricted stock that vested was $34 million in 2017, $24 million in 2016, and $62 million in 2015.

The weighted average award-date fair value of restricted stock awarded was $35.45 per share in 2017, $29.99 per share in 2016, 
and $35.53 per share in 2015.

As of December 31, 2017, $41 million of compensation cost related to all of our unvested restricted stock awarded under the 
Plans remained to be recognized. The cost is expected to be recognized over a weighted-average period of 1.4 years. Common 
stock dividends accrue on restricted stock awards and are paid upon vesting. We issue new shares of our common stock when 
awarding restricted stock.

Cash-Settled Awards   On February 1, 2016, we issued cash-settled awards to certain employees under the 1992 Plan in lieu of 
a portion of restricted stock and stock options. We issued approximately one million awards (so called phantom units, the 
nomenclature used in accounting literature), a portion of which are subject to the Company's achievement of certain levels of 
total shareholder return relative to a pre-determined industry peer group. The fair value of the market based phantom unit 
awards was estimated on the date of award using a Monte Carlo valuation model and assumed 500,000 simulations, 38% 
expected volatility and a risk-free rate of 0.9%.

These phantom units represent a hypothetical interest in the Company, and, once vested, are settled in cash. The phantom unit 
value at vesting will equal the lesser of the fair market value of a share of common stock of the Company as of the vesting date 
(2-year cliff vesting for officers and 3-year cliff vesting for non-officers) or up to four times the fair market value of a share of 
common stock of the Company, which was $31.65, as of the grant date. 

As of December 31, 2017, we had accrued a liability of $10 million related to the phantom units. No phantom units were 
awarded in 2017. 

128

 
Table of Contents

Index to Financial Statements

Noble Energy, Inc.
Notes to Consolidated Financial Statements

Phantom unit activity was as follows:

Subject to Time
Vesting

Subject to Market Conditions

Number of
Units

Weighted
Average
Award Date
 Fair Value
(per share)

Number of
Units

Weighted
Average
Award Date
Fair Value
(per share)

712,089
(13,305)
(88,625)
610,159

$

$

31.65

31.65

31.65

31.65

209,504

$

—
(42,021)
167,483

$

6.82

—

6.82

6.82

Outstanding at December 31, 2016

Vested

Forfeited

Outstanding at December 31, 2017

As of December 31, 2017, $6 million of compensation cost related to phantom units remained to be recognized. The cost is expected 
to be recognized over a weighted-average period of 1.1 years. The total fair value of phantom units that vested in 2017 was de 
minimis. Common stock dividends accrue on phantom units and will be paid upon vesting. 

Other Compensation Plans

401(k) Plan   We sponsor a 401(k) savings plan. All regular employees are eligible to participate. We make contributions to 
match employee contributions up to the first 6% of compensation deferred into the plan, and certain profit sharing contributions 
for employees hired on or after May 1, 2006, based upon their ages and salaries. We made cash contributions of $31 million in 
2017, $32 million in 2016, and $35 million in 2015. 

Deferred Compensation Plan   We have a non-qualified deferred compensation plan for which participant-directed investments 
are held in a rabbi trust and are available to satisfy the claims of our creditors in the event of bankruptcy or insolvency. 
Participants in that nonqualified deferred compensation plan may elect to receive distributions in either cash or shares of our 
common stock. Components of that rabbi trust are as follows:

(millions, except share amounts)
Rabbi Trust Assets
Mutual Fund Investments
Noble Energy Common Stock (at Fair Value)
Total Rabbi Trust Assets
Liability Under Related Deferred Compensation Plan
Number of Shares of Noble Energy Common Stock Held by Rabbi Trust

December 31,

2017

2016

$

$
$

57
14
71
71
470,030

$

$
$

62
26
88
88
671,269

Assets of that rabbi trust, other than our common stock, are invested in certain mutual funds that cover an investment spectrum 
ranging from equities to money market instruments. These mutual funds have published market prices and are reported at fair 
value. See Note 13.  Fair Value Measurements and Disclosures. The mutual funds are included in the mutual fund investments 
account in other noncurrent assets in the consolidated balance sheets.

Shares of our common stock held by the rabbi trust holding common stock are accounted for as treasury stock (recorded at cost, 
$16.72 per share) in the shareholders’ equity section of the consolidated balance sheets. Amounts payable to plan participants 
are included in other noncurrent liabilities in the consolidated balance sheets and include the market value of the shares of our 
common stock. 

Approximately 400,000 shares, or 85%, of our common stock held in respect of one nonqualified deferred compensation plan at 
December 31, 2017 were attributable to a member of our Board of Directors. The shares are being distributed in equal 
installments over the next two years. Distributions of 200,000 shares were made in each of 2017, 2016 and 2015. In addition, 
plan participants sold 1,238 shares of our common stock in 2017, 1,009 shares in 2016, and 1,009 shares in 2015. Proceeds 
were invested in mutual funds and/or distributed to plan participants. Distributions to plan participants were valued at $21 
million in 2017, $22 million in 2016 and $18 million in 2015. 

All fluctuations in market value of the deferred compensation liability have been reflected in other non-operating (income) 
expense, net in the consolidated statements of operations. We recognized deferred compensation expense (income) of $9 
million in 2017, $11 million in 2016 and $(12) million in 2015. 

129

 
 
 
 
Table of Contents

Index to Financial Statements

Noble Energy, Inc.
Notes to Consolidated Financial Statements

We also maintain other nonqualified deferred compensation plans for the benefit of certain of our employees. Deferred 
compensation liabilities of $116 million and $121 million were outstanding at December 31, 2017 and 2016, respectively, under 
those other plans.

Note 13.  Fair Value Measurements and Disclosures 

Assets and Liabilities Measured at Fair Value on a Recurring Basis

Certain assets and liabilities are measured at fair value on a recurring basis in our consolidated balance sheets. The following 
methods and assumptions were used to estimate the fair values:

Cash, Cash Equivalents, Accounts Receivable and Accounts Payable   The carrying amounts approximate fair value due to the 
short-term nature or maturity of the instruments.

Mutual Fund Investments   Our mutual fund investments consist of various publicly-traded mutual funds that include 
investments ranging from equities to money market instruments. The fair values are based on quoted market prices for identical 
assets.

Commodity Derivative Instruments   Our commodity derivative instruments may include variable to fixed price commodity 
swaps, two-way collars, three-way collars, swaptions, enhanced swaps and basis swaps. We estimate the fair values of these 
instruments using published forward commodity price curves as of the date of the estimate. The discount rate used in the 
discounted cash flow projections is based on published LIBOR rates, Eurodollar futures rates and interest swap rates. The fair 
values of commodity derivative instruments in an asset position include a measure of counterparty nonperformance risk, and 
the fair values of commodity derivative instruments in a liability position include a measure of our own nonperformance risk, 
each based on the current published credit default swap rates. In addition, for collars, we estimate the option values of the put 
options sold and the contract floors and ceilings using an option pricing model which takes into account market volatility, 
market prices and contract terms. See Note 8.  Derivative Instruments and Hedging Activities.

Deferred Compensation Liability   The value is dependent upon the fair values of mutual fund investments and shares of our 
common stock held in a rabbi trust. See Mutual Fund Investments above.

Stock-Based Compensation Liability   A portion of the value of the liability associated with our phantom unit plan is dependent 
upon the fair value of Noble Energy common stock as of the end of each reporting period. See Note 12.  Stock-Based and Other 
Compensation Plans.

130

Table of Contents

Index to Financial Statements

Noble Energy, Inc.
Notes to Consolidated Financial Statements

Measurement information for assets and liabilities that are measured at fair value on a recurring basis was as follows:

(millions)
December 31, 2017
Financial Assets

Mutual Fund Investments
Commodity Derivative Instruments

Financial Liabilities

Commodity Derivative Instruments
Portion of Deferred Compensation
Liability Measured at Fair Value
Stock Based Compensation Liability
Measured at Fair Value

December 31, 2016
Financial Assets

Mutual Fund Investments
Commodity Derivative Instruments

Financial Liabilities

Commodity Derivative Instruments
Portion of Deferred Compensation
Liability Measured at Fair Value
Stock Based Compensation Liability
Measured at Fair Value

Fair Value Measurements Using
Significant 
Other
Observable 
Inputs
(Level 2) (1)

Quoted 
Prices in  
Active 
Markets
(Level 1) (1)

Significant
Unobservable
Inputs      
(Level 3) (1)

Adjustment (2)

Fair Value
Measurement

$

$

$

$

57
—

—

(71)

(10)

71
—

—

(88)

(9)

— $

7

— $
—

— $
(5)

(78)

—

—

—

—

—

5

—

—

— $
5

— $
—

— $
(5)

(121)

—

—

—

—

—

5

—

—

57
2

(73)

(71)

(10)

71
—

(116)

(88)

(9)

(1)  See Note 1.  Summary of Significant Accounting Policies – Fair Value Measurements for a description of the fair value hierarchy.
(2)  Amount represents the impact of netting clauses within our master agreements that allow us to net cash settle asset and liability positions 

with the same counterparty.

Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis   Certain assets and liabilities are measured at fair 
value on a nonrecurring basis in our consolidated balance sheets. The following methods and assumptions were used to estimate 
the fair values: 
Asset Impairments   In 2017, 2016, and 2015, we determined that the carrying amounts of certain oil and gas assets were not 
recoverable from future cash flows and, therefore, were impaired. The assets were reduced to their estimated fair values as 
noted below. 
Inventory Impairment   In 2016, and 2015, we determined that the carrying amount of certain of our materials and supplies 
inventory was greater than its net realizable value or not recoverable from future cash flows. These assets were, therefore, 
adjusted as noted below.
Marcellus Shale Firm Transportation Liability  As of December 31, 2017, we had recorded a $90 million liability representing 
the discounted present value of our remaining obligation under firm transportation contracts. See Note 17 – Commitments and 
Contingencies.   

131

 
 
 
Table of Contents

Index to Financial Statements

Noble Energy, Inc.
Notes to Consolidated Financial Statements

Information about the impaired assets is as follows:

Description
(millions)
Year Ended December 31, 2017
Impaired Oil and Gas Properties $
Year Ended December 31, 2016
Impaired Oil and Gas Properties
Impaired Materials and Supplies
Inventory
Year Ended December 31, 2015
Impaired Oil and Gas Properties
Impaired Materials and Supplies
Inventory

Quoted Prices in 
Active Markets 
(Level 1) (1)

Fair Value Measurements Using
Significant Other 
Observable Inputs 
(Level 2) (1)

Significant 
Unobservable 
Inputs (Level 3) (1)

Net Book 
Value (2)

Total Pre-tax
(Non-cash)
Impairment Loss

— $

— $

— $

70

$

—

—

—

—

—

—

—

—

—

91

752

61

92

105

1,285

81

70

92

14

533

20

(1)  See Note 1.  Summary of Significant Accounting Policies – Fair Value Measurements for a description of the fair value hierarchy.
(2)  Amount represents net book value at the date of assessment.

The fair values of properties held and used were determined as of the date of the assessment using discounted cash flow 
models. The discounted cash flows were based on management’s expectations for the future. Inputs included estimates of future 
crude oil and natural gas production, commodity prices based on commodities sales contract terms or commodity price curves 
as of the date of the estimate, estimated operating and development costs, and a risk-adjusted discount rate of 10%. The fair 
values of assets held for sale were based on anticipated sales proceeds less costs to sell. Costs associated with abandoned 
properties were completely written off. See Note 5.  Asset Impairments.

Additional Fair Value Disclosures

Debt   The fair value of fixed-rate, public debt is estimated based on the published market prices for the same or similar issues. 
As such, we consider the fair value of our public, fixed-rate debt to be a Level 1 measurement on the fair value hierarchy. 

At December 31, 2017, our variable-rate, non-public debt included the Revolving Credit Facility and the Noble Midstream 
Services Revolving Credit Facility. The fair value is estimated based on significant other observable inputs. As such, we 
consider the fair value of these facilities to be a Level 2 measurement on the fair value hierarchy. See Note 10.  Long-Term 
Debt.

Fair value information regarding our debt is as follows:

(millions)
Long-Term Debt, Net (1)

December 31,
2017

December 31,
2016

Carrying
Amount

Fair Value

Carrying
Amount

Fair Value

$

6,586

$

7,142

$

6,739

$

7,112

(1)  Excludes unamortized discount, premium, debt issuance costs and capital lease obligations.
Note 14.  Segment Information 

During second quarter 2017, as a result of the strategic changes in our US onshore portfolio, we established our Midstream 
business as a new reportable segment. The Midstream segment, which includes the consolidated accounts of Noble Midstream 
Partners, additional US onshore midstream assets and US onshore equity method investments, was previously reported within 
the United States reportable segment. As a result, we now have the following reportable segments: United States (US onshore 
and Gulf of Mexico); Eastern Mediterranean (Israel and Cyprus); West Africa (Equatorial Guinea, Cameroon and Gabon); 
Other International (Newfoundland (Canada), Suriname, Falkland Islands and new ventures); and Midstream.

The geographical reportable segments are in the business of crude oil and natural gas exploration, development, production, and 
acquisition (Oil and Gas Exploration and Production or E&P). The Midstream reportable segment owns, operates, develops and 
acquires domestic midstream infrastructure assets with current focus areas being the DJ and Delaware Basins. Expenses related 
to debt, headquarters depreciation and corporate general and administrative expenses are recorded at the corporate level. Prior 

132

 
Table of Contents

Index to Financial Statements

Noble Energy, Inc.
Notes to Consolidated Financial Statements

period amounts are presented on a comparable basis. 

(In millions)
Year Ended December 31, 2017
Oil, NGL and Gas Sales from 
Third Parties (2)
Income from Equity Method 
Investees and Other (3)
Intersegment Revenues
Total Revenues
Lease Operating Expense
Production and Ad Valorem
Taxes
Gathering, Transportation and
Processing Expense
Total Production Expense
DD&A
Clayton Williams Energy
Acquisition Expenses
Loss on Debt Extinguishment
Loss on Marcellus Shale
Upstream Divestiture
Asset Impairments
Gain on Commodity Derivative
Instruments
(Loss) Income Before Income
Taxes
Equity Method Investments
Additions to Long Lived Assets
Goodwill (4)
Total Assets at End of Year (5)
Year Ended December 31, 2016

Oil, NGL and Gas Sales from 
Third Parties (2)
Income from Equity Method
Investees and Other
Intersegment Revenues
Total Revenues
Lease Operating Expense
Production and Ad Valorem
Taxes
Gathering, Transportation and
Processing Expense
Total Production Expense
DD&A
Asset Impairments
Loss on Commodity Derivative
Instruments
(Loss) Income Before Income
Taxes

Equity Method Investments

Additions to Long Lived Assets
Total Assets at End of Year (5)

Oil and Gas Exploration and Production

Midstream

Consolidated

United
States

Eastern
Mediter-
ranean

West
Africa

Other
Int'l

United
States

Intersegment 
Eliminations 
and Other (1) Corporate

$

4,060

$ 3,156

$

534

$

370

$ — $

— $

— $

196

—
4,256
571

—

—
3,156
466

138

135

432
1,141
2,053

100
98

2,379
70

550
1,151
1,739

100
—

2,379
63

(63)

(92)

(2,191)
305
2,851
1,310
21,476

(2,365)
—
1,994
1,310
15,767

—

—
534
29

—

—
29
76

—
—

—
—

—

120

—
490
90

—

—
90
146

—
—

—
—

29

—

—
—
—

—

—
—
4

—
—

—
7

—

76

277
353
—

3

70
73
30

—
—

—
—

—

413
—
411
—
2,846

203
225
34
—
1,308

(54)
—
(34)
—
114

233
80
423
—
1,357

—
(277)
(277)
(14)

—

(188)
(202)
(5)

—
—

—
—

—

(62)
—
(79)
—
(163)

$

3,389

$ 2,416

$

540

$

433

$ — $

— $

— $

102
—
3,491
542

—
—
2,416
418

78

76

480
1,100
2,454
92

564
1,058
2,103
—

139

126

(1,772)

(1,277)

400

—

1,526

1,353

—
—
540
37

—

—
37
81
88

—

543

—

88

50
—
483
105

—

—
105
205
—

13

(338)
217

54

21,011

16,153

2,233

1,479

133

—
—
—
—

—

—
—
6
4

—

(199)
—
(6)
89

52
200
252
—

2

44
46
19
—

—

176

183

58

851

—
(200)
(200)
(18)

—

(128)
(146)
—
—

—

(51)
—
(53)
(98)

—

—

—
—
—

—

—
—
63

—
98

—
—

—

(559)
—
102
—
247

—

—
—
—
—

—

—
—
40
—

(626)
—

32

304

 
 
 
 
 
 
 
 
Table of Contents

Index to Financial Statements

Noble Energy, Inc.
Notes to Consolidated Financial Statements

(In millions)

Consolidated

Oil and Gas Exploration and Production  Midstream

United
States

Eastern
Mediter-   
ranean

West
Africa

Other 
Int'l

United 
States

Intersegment 
Eliminations 
and Other (1) Corporate

Year Ended December 31, 2015
Oil, NGL and Gas Sales from 
Third Parties (2)
Income from Equity Method
Investees and Other
Intersegment Revenues
Total Revenues
Lease Operating Expense
Production and Ad Valorem
Taxes
Gathering, Transportation and
Processing Expense
Total Production Expense
DD&A
Asset Impairments
Gain on Commodity Derivative
Instruments
(Loss) Income Before Income
Taxes
Equity Method Investments

Additions to Long Lived Assets
Total Assets at End of Year (5)

$

3,093

$ 2,011

$

497

$

580

$

5

$

— $

— $

90
—
3,183
563

—
—
2,011
398

127

126

306
996
2,131
533

366
890
1,677
158

(501)

(347)

(2,219)

(1,693)

453

—

3,062

2,409

—
—
497
42

—

—
42
70
36

—

313

—

147

39
—
619
131

—

—
131
326
339

(154)

(90)
227

124

24,196

18,043

2,676

2,299

—
—
5
4

—

—
4
—
—

—

(229)
—

177

205

51
119
170
—

1

25
26
14
—

—

123

226

146

799

—
(119)
(119)
(12)

—

(85)
(97)
—
—

—

(21)
—
(21)
(46)

—

—
—
—
—

—

—
—
44
—

—

(622)
—

80

220

(1)   Intersegment eliminations related to (loss) income before income taxes are the result of Midstream expenditures. These costs are presented 
as property, plant and equipment within the E&P business on an unconsolidated basis, in accordance with the successful efforts method of 
accounting, and are eliminated upon consolidation.

(2)   Revenues from third parties for all foreign countries, in total, were $904 million in 2017, $973 million in 2016, and $1.1 billion in 2015.
(3)   The midstream segment includes revenues of $19 million from third party customers. 
(4)   Goodwill is associated with the Texas reporting unit. See Note 1. Summary of Significant Accounting Policies.
(5)   Long-lived assets located in all foreign countries, in total, were $2.8 billion, $3.0 billion, and $3.9 billion at December 31, 2017, 2016, 

and 2015, respectively.

134

Table of Contents

Index to Financial Statements

Noble Energy, Inc.
Notes to Consolidated Financial Statements

Note 15.  Concentration of Risk 

Concentration of Market Risk   The largest single non-affiliated purchasers of our production were as follows:

Year Ended December 31, 2017
BP (1)
Shell (2)
Year Ended December 31, 2016
Glencore Energy UK Ltd
Shell (2)
Year Ended December 31, 2015
Glencore Energy UK Ltd
Shell (2)

Percentage of
Crude Oil Sales

Percentage of Total
Oil, Gas & NGL Sales

15%
22%

22%
24%

30%
18%

10%
13%

12%
13%

18%
11%

(1)    Includes sales to BP North American Funding Company, BP Company Commercial and/or BP Company.
(2)    Includes sales to Shell Trading (US) Company and/or Shell International Trading and Shipping Limited.

We believe the loss of any one purchaser would not have a material effect on our financial position or results of operations since 
there are numerous potential purchasers of our production.

Concentration of Credit Risk   Certain of our financial instruments, including cash equivalents, trade and joint interest 
receivables and derivative instruments, may expose us to credit risk.  

A significant portion of our cash is located in our foreign subsidiaries. The cash is denominated in US dollars and invested in 
highly liquid money market funds and short term deposits with original maturities of three months or less at the time of 
purchase. Although our cash and cash equivalents are deposited with major international banks and financial institutions, 
concentrations of cash in certain foreign locations may increase credit risk. We monitor the creditworthiness of the banks and 
financial institutions with which we invest and review the securities underlying our investment accounts. We believe that losses 
from nonperformance are unlikely to occur; however, we are not able to predict sudden changes in creditworthiness.

Our accounts receivable result from sales of crude oil, NGL and natural gas production, and joint interest billings to our 
partners for their share of expenses on joint venture projects for which we are the operator. Joint venture projects, especially in 
deepwater or remote international locations, can be very capital cost intensive. Thus the receivables from our joint venture 
partners can become significant.

Our accounts receivable reflect a broad national and international customer base, which limits our exposure to concentrations of 
credit risk. The majority of these receivables have payment terms of 30 days or less. We continually monitor the 
creditworthiness of the counterparties, some of which are not as creditworthy as we are and may experience liquidity 
problems. We have obtained credit enhancements from some parties, including one of our significant crude oil purchasers, in 
the way of parental guarantees or letters of credit. However, we do not have all of our trade credit or joint interest receivables 
protected through guarantees or credit support. Nonperformance by a trade creditor or joint venture partner could result in 
losses. 

Our hedging activity may increase counterparty credit risk, especially during periods of falling commodity prices. We conduct 
our hedging activities with a diverse group of investment grade major banks and market participants. We monitor the 
creditworthiness of our hedge counterparties, and our internal hedge policies provide for mark-to-market exposure limits. We 
use master agreements which allow us, in the event of default, to elect early termination of all contracts with the defaulting 
counterparty. If we choose to elect early termination, all asset and liability positions with the defaulting counterparty would be 
“net settled” at the time of election.

135

 
 
 
Table of Contents

Index to Financial Statements

Noble Energy, Inc.
Notes to Consolidated Financial Statements

Note 16.  Additional Shareholders’ Equity Information 

Common Stock and Treasury Stock   Activity in shares of our common stock and treasury stock was as follows:

Common Stock Shares Issued
Shares, Beginning of Period
Exercise of Common Stock Options
Restricted Stock Awarded, Net of Forfeitures (1)
Shares Exchanged in Clayton Williams Energy Acquisition
Shares, End of Period
Treasury Stock
Shares, Beginning of Period
Shares Received in Payment of Withholding Taxes Due on Vesting of Shares of Restricted 
Stock (2)
Rabbi Trust Shares Distributed and/or Sold
Shares, End of Period
Additional Information
Incremental Shares From Assumed Conversion of Dilutive Stock Options, Restricted Stock, 
and Shares of Common Stock in Rabbi Trust (2)
Number of Antidilutive Stock Options, Shares of Restricted Stock and Shares of Common
Stock in Rabbi Trust excluded from Dilutive Loss per Share

Year Ended December 31,

2017

2016

471,360,427
382,882
2,912,936
54,087,136
528,743,381

469,718,512
954,898
687,017
—
471,360,427

37,961,316

37,925,625

1,026,891
(201,238)
38,786,969

236,700
(201,009)
37,961,316

—

—

15,619,276

14,218,319

(1)  The 2017 amount includes approximately 1.9 million shares of restricted stock awarded to former holders of Clayton Williams Energy 
outstanding stock awards as part of the Clayton Williams Energy Acquisition. See Note 3.  Clayton Williams Energy Acquisition.
(2)  The 2017 amount includes approximately 720,000 shares of common stock from Clayton Williams Energy shareholders for the payment 
of withholding taxes due on the vesting of Clayton Williams Energy restricted shares and options pursuant to the purchase and sale 
agreement.

(3)  For the years ended December 31, 2017 and 2016, all outstanding options and non-vested restricted shares have been excluded from the 
calculation of diluted earnings (loss) per share as Noble Energy incurred a loss. Therefore, inclusion of outstanding options and non-
vested restricted shares in the calculation of diluted earnings (loss) per share would be anti-dilutive. 

Issuance of Noble Midstream Partners Common Units   On December 15, 2017, Noble Midstream Partners closed an offering 
of 3,680,000 common units, generating net proceeds of approximately $174 million, net of offering costs. On June 26, 2017, 
Noble Midstream Partners engaged in a private placement offering of 3,525,000 common units, generating proceeds of 
approximately $138 million, net of offering costs.

In third quarter 2016, Noble Midstream Partners completed its initial public offering of 14,375,000 common units, generating 
proceeds of $299 million, net of offering costs.

Subsequent Event - Share Repurchase Program   On February 15, 2018, we announced the Company's Board of Directors 
authorized a share repurchase program of $750 million which expires December 31, 2020. All purchases will be made in 
accordance with applicable securities laws from time to time in open market or private transactions, depending on market 
conditions, and may be discontinued at any time.     

Accumulated Other Comprehensive Loss (AOCL)   AOCL in the shareholders’ equity section of the balance sheet included:

136

 
 
 
 
Table of Contents

Index to Financial Statements

Noble Energy, Inc.
Notes to Consolidated Financial Statements

(millions)
December 31, 2014
Realized Amounts Reclassified Into Earnings
Unrealized Change in Fair Value
December 31, 2015
Realized Amounts Reclassified Into Earnings
Unrealized Change in Fair Value
December 31, 2016
Realized Amounts Reclassified Into Earnings
Unrealized Change in Fair Value
December 31, 2017

Accumulated Other Comprehensive Loss
Pension-
Interest Rate
Related and
 Cash Flow
 Other
Hedges

Total

$

$

(23) $
1
—
(22)
1
—
(21)
1
—
(20) $

(67) $
62
(6)
(11)
4
(3)
(10)
4
(4)
(10) $

(90)
63
(6)
(33)
5
(3)
(31)
5
(4)
(30)

All amounts in the table above are reported net of tax, using an effective income tax rate of 35%.

AOCL at December 31, 2017 included deferred losses of $20 million, net of tax, related to interest rate derivative instruments. 
This amount is being reclassified to earnings as an adjustment to interest expense over the term of our senior notes due March 
2041.  

Note 17.  Commitments and Contingencies 

Legal Proceedings   We are involved in various legal proceedings in the ordinary course of business.  These proceedings are 
subject to the uncertainties inherent in any litigation.  We are defending ourselves vigorously in all such matters and we believe 
that the ultimate disposition of such proceedings will not have a material adverse effect on our financial position, results of 
operations or cash flows.

Colorado Air Matter   In April 2015, we entered into a joint consent decree (Consent Decree) with the US Environmental 
Protection Agency, US Department of Justice, and State of Colorado to improve emission control systems at a number of our 
condensate storage tanks that are part of our upstream crude oil and natural gas operations within the Non-Attainment Area of 
the DJ Basin. The Consent Decree was entered by the US District Court for the District of Colorado on June 2, 2015.

The Consent Decree, which alleges violations of the Colorado Air Pollution Prevention and Control Act and Colorado’s federal 
approved State Implementation Plan, specifically Colorado Air Quality Control Commission Regulation Number 7, requires us 
to perform certain injunctive relief activities and to complete mitigation projects and supplemental environmental projects 
(SEP), and pay a civil penalty. Costs associated with the settlement consist of $4.95 million in civil penalties which were paid 
in 2015. Mitigation costs of $4.5 million and SEP costs of $4 million are being expended in accordance with schedules 
established in the Consent Decree. Costs associated with the injunctive relief are also being expended in accordance with 
schedules established in the Consent Decree. Over the last three years, 2015 through 2017, we spent approximately $72.0 
million to undertake injunctive relief at certain tank systems following the outcome of adequacy of design evaluations and 
certain operation and maintenance activities to handle potential peak instantaneous vapor flow rates. Future costs associated 
with injunctive relief are not yet precisely quantifiable as we are continually evaluating various approaches to meet the ongoing 
obligations of the Consent Decree.

Overall compliance with the Consent Decree has resulted in the temporary shut-in and permanent plugging and abandonment of 
certain wells and associated tank batteries. Consent Decree compliance could result in additional temporary shut-ins and 
permanent plugging and abandonment of certain wells and associated tank batteries. The Consent Decree sets forth a detailed 
compliance schedule with deadlines for achievement of milestones through early 2019 that may be extended depending on 
certain situations. The Consent Decree contains additional obligations for ongoing inspection and monitoring beyond that 
which is required under existing Colorado regulations.

We have concluded that the penalties, injunctive relief, and mitigation expenditures that resulted from this settlement did not 
have, and based on currently available information will not have, a material adverse effect on our financial position, results of 
operations or cash flows.

Colorado Water Quality Control Division Matter   In January 2017, we received a Notice of Violation/Cease and Desist Order 
(NOV/CDO) advising us of alleged violations of the Colorado Water Quality Control Act (Act) and its implementing 
regulations as it relates to our Colorado Discharge Permit System General Permit for construction activities associated with oil 
and gas exploration and/or production within our Wells Ranch Drilling and Production field located in Weld County, Colorado 

137

 
Table of Contents

Index to Financial Statements

Noble Energy, Inc.
Notes to Consolidated Financial Statements

(Permit). The NOV/CDO further orders us to cease and desist from all violations of the Act, the regulations and the Permit and 
to undertake certain corrective actions. Given the uncertainty associated with administrative actions of this nature, we are 
unable to predict the ultimate outcome of this action at this time but believe that the resolution of this action will not have a 
material adverse effect on our financial position, results of operations or cash flows.

Colorado Oil & Gas Conservation Commission Administrative Order on Consent   In November 2017, we received a proposed 
Administrative Order on Consent (AOC) from the COGCC to resolve allegations of noncompliance associated with site 
preparation and stabilization at an oil and gas location in Weld County, Colorado. The AOC, which provides for an opportunity 
to further discuss the offer of settlement, has not yet been executed. Given the uncertainty associated with administrative 
actions of this nature, we are unable to predict the ultimate outcome of this action at this time but believe that the resolution of 
this action will not have a material adverse effect on our financial position, results of operations or cash flows.

Colorado Air Compliance Order on Consent   In April 2017, we received a proposed Compliance Order on Consent (COC) 
from the Colorado Department of Public Health and Environment’s Air Pollution Control Division (APCD) to resolve 
allegations of noncompliance associated with compliance testing of certain engines subject to various General Permit 02 
conditions and/or individual permit conditions. In May 2017, we reached a final resolution with the APCD and executed the 
COC, which requires payment of a civil penalty of $24,710 and an expenditure of no less than $98,840 on an approved SEP(s). 
This resolution is not believed to have a material adverse effect on our financial position, results of operations or cash flows. 

Transportation and Gathering Obligations   As part of our Marcellus Shale upstream divestiture, we retained certain 
transportation and gathering obligations to flow Marcellus Shale natural gas production to various markets inside and outside of 
the Marcellus Basin. Our financial commitment for these agreements, which have remaining terms of two to 16 years, is 
approximately $1.4 billion, undiscounted. The agreements for firm transportation primarily relate to services on certain 
pipelines which were recently placed into service in late 2017/early 2018 or for services on new pipeline projects to be 
constructed by, and connecting to, existing and new interstate pipeline systems with estimated in-service dates in late 2018. The 
associated commitments are included in the table below. See Note 1. Summary of Significant Accounting Policies – Exit Costs.

We also have transportation and gathering obligations to flow DJ Basin, Eagle Ford Shale, and Gulf of Mexico production to 
various markets. Our financial commitment for these agreements, which have remaining terms of one to 11 years, is 
approximately $781 million, undiscounted. The commitment is included in the table below.

Non-Cancelable Leases and Other Commitments  We hold leases and other commitments for drilling rigs, buildings, equipment 
and other property. Rental expense for office buildings and oil and gas operations equipment was $69 million in 2017, $76 
million in 2016, and $84 million in 2015. 

Minimum commitments as of December 31, 2017 consist of the following:

(millions)
2018
2019
2020
2021
2022
2023 and Thereafter

Total

Drilling, 
Equipment,
and Purchase 
Obligations
636
$
167
40
13
8
32
896

$

Transportation
and Gathering 
Obligations

$

$

215
252
247
223
182
1,355
2,474

Operating
Lease
 Obligations
44
$
33
32
32
33
156
330

$

 Capital
 Lease and 
Other 
Obligations(1)
74
$
45
42
29
21
124
335

$

$

$

Total

969
497
361
297
244
1,667
4,035

(1)    Annual lease payments, net to our interest, exclude regular maintenance and operational costs. See Note 10.  Long-Term Debt.

138

Table of Contents
Index to Financial Statements

Noble Energy, Inc.
Supplemental Oil and Gas Information
(Unaudited)

In accordance with US GAAP for disclosures about oil and gas producing activities, and SEC rules for oil and gas reporting 
disclosures, we are making the following disclosures about our crude oil, NGL and natural gas reserves and exploration and 
production activities. In 2017 we established our Midstream business as a new reportable segment. The results of operations, 
costs incurred and capitalized costs associated with our Midstream reportable segment are not included in this disclosure. Prior 
period amounts are presented on a comparable basis. 

Reserves   There are numerous uncertainties inherent in estimating quantities of proved crude oil, NGL and natural gas reserves 
and reserves engineering is a subjective process of estimating underground accumulations of crude oil and natural gas that 
cannot be precisely measured. The accuracy of any reserves estimate is a function of the quality of available data and of 
engineering and geological interpretation and judgment. Results of drilling, testing and production subsequent to the date of the 
estimate may justify revision of such estimate. Accordingly, reserves estimates are often different from the quantities of crude 
oil, NGL and natural gas that are ultimately recovered.

Economic producibility of reserves is dependent on the crude oil, NGL and natural gas prices used in the reserves estimate. We 
based our December 31, 2017, 2016, and 2015 reserves estimates on 12-month average commodity prices, unless contractual 
arrangements designate the price to be used, in accordance with SEC rules. However, commodity prices are volatile and 
declines in crude oil, NGL and natural gas prices could result in negative reserves revisions. Production, development and 
abandonment costs are based on year-end economic conditions; therefore increases in these costs could also result in negative 
reserves revisions.

Reserves Estimates  Estimates of our proved reserves and associated future net cash flows are made solely by our engineers 
and are the responsibility of management. For additional information regarding our reserves estimation process and internal 
controls see Items 1. and 2. Business and Properties – Proved Reserves Disclosures – Internal Controls Over Reserves 
Estimates and Technologies Used in Reserves Estimation.

Third-Party Reserves Audit  We retained Netherland, Sewell & Associates, Inc. (NSAI), independent, third-party petroleum 
engineers, to perform a reserves audit of proved reserves as of December 31, 2017. See Items 1. and 2. Business and Properties 
– Proved Reserves Disclosures.

Definitions  The following definitions apply to the terms used in the paragraphs above:

Reserves Estimate   The determination of an estimate of a quantity of oil or gas reserves that are thought to exist at a certain 
date, considering existing prices and reservoir conditions.

Reserves Audit   The process of reviewing certain of the pertinent facts interpreted and assumptions underlying a reserves 
estimate prepared by another party and the rendering of an opinion about the appropriateness of the methodologies employed, 
the adequacy and quality of the data relied upon, the depth and thoroughness of the reserves estimation process, the 
classification of reserves appropriate to the relevant definitions used, and the reasonableness of the estimated reserves 
quantities.

The following definitions apply to our categories of proved reserves:

Proved Oil and Gas Reserves   Proved oil and gas reserves are those quantities of oil and gas, which, by analysis of geoscience 
and engineering data, can be estimated with reasonable certainty to be economically producible—from a given date forward, 
from known reservoirs, and under existing economic conditions, operating methods, and government regulations—prior to the 
time at which contracts providing the right to operate expire, unless evidence indicates that renewal is reasonably certain, 
regardless of whether deterministic or probabilistic methods are used for the estimation. The project to produce the 
hydrocarbons must have commenced or the operator must be reasonably certain that it will commence the project within a 
reasonable time.

Developed Oil and Gas Reserves   Proved developed oil and gas reserves are reserves that can be expected to be recovered 
through existing wells with existing equipment and operating methods or in which the cost of the required equipment is 
relatively minor compared with the cost of a new well.

Undeveloped Oil and Gas Reserves   PUDs are reserves that are expected to be recovered from new wells on undrilled acreage, 
or from existing wells where a relatively major expenditure is required for recompletion. Undrilled locations can be classified 
as having undeveloped reserves only if a development plan has been adopted indicating that they are scheduled to be drilled 
within five years, unless the specific circumstances justify a longer time.

For complete definitions of proved reserves, refer to SEC Regulation S-X, Rule 4-10(a)(6), (22) and (31).

139

Table of Contents
Index to Financial Statements

Noble Energy, Inc.
Supplemental Oil and Gas Information
(Unaudited)

Proved Oil Reserves (Unaudited)  The following reserves schedule was developed by our qualified petroleum engineers and 
sets forth the changes in estimated quantities of proved crude oil reserves:

Crude Oil and Condensate (MMBbls)

United
States

Equatorial
Guinea

Israel

Total

Proved Reserves as of:
December 31, 2014
Revisions of Previous Estimates (1)
Extensions, Discoveries and Other Additions (2)
Purchase of Minerals in Place (3)
Sale of Minerals in Place
Production (5)
December 31, 2015
Revisions of Previous Estimates (1)
Extensions, Discoveries and Other Additions (2)
Sale of Minerals in Place
Production (5)
December 31, 2016
Revisions of Previous Estimates (1)
Extensions, Discoveries and Other Additions (2)
Purchase of Minerals in Place (3)
Sale of Minerals in Place (4)
Production (5)
December 31, 2017
Proved Developed Reserves as of:
December 31, 2014
December 31, 2015
December 31, 2016
December 31, 2017
Proved Undeveloped Reserves as of:
December 31, 2014
December 31, 2015
December 31, 2016
December 31, 2017

236
(56)
42
65
(2)
(29)
256
14
66
(4)
(36)
296
29
104
43
(12)
(41)
419

119
137
138
176

117
119
158
243

65
(5)
—
—
—
(12)
48
(4)
—
—
(10)
34
2
—
—
—
(7)
29

52
34
34
29

13
14
—
—

3
—
—
—
—
—
3
—
—
—
—
3
—
6
—
—
—
9

3
3
3
3

—
—
—
6

304
(61)
42
65
(2)
(41)
307
10
66
(4)
(46)
333
31
110
43
(12)
(48)
457

174
174
175
208

130
133
158
249

(1)  The 2015 US revisions were primarily associated with negative price revisions of 70 MMBbls to our onshore programs due to a decline 
in the 12-month average price of crude oil; partially offset by positive revisions of 14 MMBbls due to producing well performance and 
optimized lateral lengths in the Delaware Basin and Eagle Ford Shale. Equatorial Guinea revisions were associated with negative price 
revisions.

The 2016 US revisions associated with positive performance and/or decreases in development or operating costs included revisions of 33 
MMBbls in the DJ Basin, Marcellus Shale, Delaware Basin and Gulf of Mexico; partially offset by negative revisions of 19 MMBbls due 
to lower commodity prices. Equatorial Guinea revisions were primarily due to lower commodity prices.

The 2017 US revisions associated with positive performance totaled 17 MMBbls, of which 14 were primarily attributable to the 
Delaware Basin due to continued optimization of well development and improved producing well performance. Revisions also included 
positive price revisions of 12 MMBbls.

(2)  The 2015 increase in US reserves was attributable to DJ Basin development.

The 2016 increase in US reserves included 38 MMBbls in the DJ Basin and 28 MMBbls in the Delaware Basin and Eagle Ford Shale, 
and was associated with increased performance from our horizontal drilling programs.

The 2017 increase in US reserves included additions of 59 MMBbls in the Delaware Basin, 42 MMBbls in the DJ Basin and 3 MMBbls 
in the Eagle Ford Shale primarily due to the addition of planned new locations and activity.

(3)  The 2015 increase was attributable to reserves acquired in the Rosetta Merger.

140

 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents
Index to Financial Statements

Noble Energy, Inc.
Supplemental Oil and Gas Information
(Unaudited)

The 2017 increase was attributable to the reserves acquired in the Clayton Williams Energy Acquisition.

(4) 

In 2017, we sold the Marcellus Shale upstream assets and other non-strategic US onshore assets.

(5)  Equatorial Guinea production included sales from Alba Plant of approximately 1 MMBbl in 2017 and 3 MMBbl in each of the years 

2016 and 2015.

See Items 1. and 2. Business and Properties – Proved Reserves Disclosures, Note 3. Clayton Williams Energy Acquisition and Note 4.  
Acquisitions, Divestitures and Merger.

141

Table of Contents
Index to Financial Statements

Noble Energy, Inc.
Supplemental Oil and Gas Information
(Unaudited)

Proved NGL Reserves (Unaudited) The following reserves schedule was developed by our qualified petroleum engineers and 
sets forth the changes in estimated quantities of proved NGL reserves:

NGLs (MMBbls)
Equatorial
Guinea

United
States

Total

Proved Reserves as of:
December 31, 2014
Revisions of Previous Estimates (1)
Extensions, Discoveries and Other Additions (2)
Purchase of Minerals in Place (3)
Sale of Minerals in Place
Production (4)
December 31, 2015
Revisions of Previous Estimates (1)
Extensions, Discoveries and Other Additions (2)
Purchase of Minerals in Place
Sale of Minerals in Place
Production (4)
December 31, 2016
Revisions of Previous Estimates (1)
Extensions, Discoveries and Other Additions (2)
Purchase of Minerals in Place (3)
Sale of Minerals in Place (5)
Production (4)
December 31, 2017
Proved Developed Reserves as of:
December 31, 2014
December 31, 2015
December 31, 2016
December 31, 2017
Proved Undeveloped Reserves as of:
December 31, 2014
December 31, 2015
December 31, 2016
December 31, 2017

113
(37)
15
100
(1)
(14)
176
16
31
4
—
(20)
207
31
32
7
(38)
(21)
218

64
101
113
119

49
75
94
99

15
—
—
—
—
(2)
13
1
—
—
—
(2)
12
1
—
—
—
(2)
11

8
5
12
11

7
8
—
—

128
(37)
15
100
(1)
(16)
189
17
31
4
—
(22)
219
32
32
7
(38)
(23)
229

72
106
125
130

56
83
94
99

(1)  The 2015 US revisions were primarily associated with negative price revisions of 44 MMBbls related to our onshore programs due to a 
decline in the 12-month average price; partially offset by a positive revision from our Marcellus Shale program due to positive well 
performance.

The 2016 US revisions were primarily associated with positive performance revisions of 11 MMBbls in the Marcellus Shale and 9 
MMBbls in the DJ Basin; partially offset by negative commodity price revisions of 4 MMBbls. 

The 2017 US revisions associated with positive performance revisions totaled 25 MMBbls, including 11 MMBbls in the Delaware Basin, 
8 MMBbls in the Eagle Ford Shale and 6 MMBbls in the DJ Basin, due to continued optimization of well development and improved 
producing well performance. Revisions also included positive price revisions of 6 MMBbls.

(2)  The 2015 additions included 14 MMBbls due to positive producing well performance and optimized lateral lengths in the DJ Basin.

The 2016 additions in US reserves primarily included an increase of 15 MMBbls in the DJ Basin and 14 MMBbls in the Delaware Basin 
and Eagle Ford shale due to improved well performance and/or decreases in development or operating costs.  

The 2017 additions in US reserves included 19 MMBbls in the DJ Basin, 9 MMBbls in the Delaware Basin and 4 MMBbls in the Eagle 
Ford Shale primarily due to the addition of planned new locations and activity.
(3)     The 2015 increase was attributable to reserves acquired in the Rosetta Merger.
       The 2017 increase was attributable to the reserves acquired in the Clayton Williams Energy Acquisition. 

142

 
 
 
 
 
 
 
Table of Contents
Index to Financial Statements

Noble Energy, Inc.
Supplemental Oil and Gas Information
(Unaudited)

(4)    Equatorial Guinea production represented sales from the Alba Plant.
(5)      In 2017, we sold the Marcellus Shale upstream assets and other non-strategic US onshore assets.
See Items 1. and 2. Business and Properties – Proved Reserves Disclosures, Note 3. Clayton Williams Energy Acquisition and Note 4.  
Acquisitions, Divestitures and Merger.

143

Table of Contents
Index to Financial Statements

Noble Energy, Inc.
Supplemental Oil and Gas Information
(Unaudited)

Proved Gas Reserves (Unaudited)  The following reserves schedule was developed by our qualified petroleum engineers and 
sets forth the changes in estimated quantities of proved natural gas reserves:

Natural Gas and Casinghead Gas (Bcf)

United
States

Israel (1)

Equatorial
Guinea

Total

Proved Reserves as of:
December 31, 2014
Revisions of Previous Estimates (2)
Extensions, Discoveries and Other Additions (3)
Purchase of Minerals in Place (4)
Sale of Minerals in Place
Production
December 31, 2015
Revisions of Previous Estimates (2)
Extensions, Discoveries and Other Additions (3)
Purchase of Minerals in Place
Sale of Minerals in Place (5)
Production
December 31, 2016
Revisions of Previous Estimates (2)
Extensions, Discoveries and Other Additions (3)
Purchase of Minerals in Place (4)
Sale of Minerals in Place (5)
Production
December 31, 2017
Proved Developed Reserves as of:
December 31, 2014
December 31, 2015
December 31, 2016
December 31, 2017
Proved Undeveloped Reserves as of:
December 31, 2014
December 31, 2015
December 31, 2016
December 31, 2017

2,804
(705)
257
629
(16)
(258)
2,711
181
492
—
(224)
(322)
2,838
124
299
46
(1,264)
(222)
1,821

1,459
1,813
1,817
983

1,345
898
1,021
838

2,416
(20)
—
—
—
(92)
2,304
(3)
—
—
(214)
(103)
1,984
292
3,271
—
—
(99)
5,448

1,973
1,879
1,600
1,793

443
425
384
3,655

613
4
—
—
—
(83)
534
38
—
—
—
(86)
486
13
—
—
(1)
(87)
411

377
247
486
411

236
287
—
—

5,833
(721)
257
629
(16)
(433)
5,549
216
492
—
(438)
(511)
5,308
429
3,570
46
(1,265)
(408)
7,680

3,809
3,939
3,903
3,187

2,024
1,610
1,405
4,493

(1) 

In accordance with the terms of the Framework, we are required to reduce our ownership in the Tamar and Dalit fields from 36% to 25% 
by year-end 2021. During 2016, we reduced our ownership to 32.5% through the sale of a 3.5% interest. At December 31, 2017, an 
additional 7.5% interest is included in assets held for sale. Proved reserves associated with the interest currently held for sale total 
approximately 502 Bcf, including 89 Bcf of PUDs, at December 31, 2017 and are included in the table above. In January 2018, we 
entered into an agreement to divest the 7.5% interest.  See Note 4. Acquisitions, Divestitures and Merger.

(2)  The 2015 US revisions were primarily associated with negative price revisions of 1.1 Tcf to our onshore programs due to a decline in the 
12-month average price, offset by a positive revision primarily to our Marcellus Shale program due to positive well performance. 
Equatorial Guinea revisions were associated with positive performance revisions to the Alba field. Israel revisions were primarily 
associated with negative performance revisions in the Mari-B field.

The 2016 US revisions were primarily associated with positive performance and/or decreases in development or operating costs and 
included 167 Bcf in the Marcellus Shale and 95 Bcf in the DJ Basin, partially offset by negative commodity price revisions of 81 Bcf. 
Equatorial Guinea revisions were associated with positive performance revisions of 58 Bcf at the Alba field, partially offset by negative 
commodity price revisions of 20 Bcf.

The 2017 US revisions were associated primarily with positive well performance and an increase in commodity prices. Net performance 
revisions of 66 Bcf primarily included 81 Bcf in the Eagle Ford Shale and 31 Bcf in the Delaware Basin, partially offset by negative 
performance revisions of 49 Bcf in the DJ Basin primarily associated vertical well locations. The 2017 Israel performance revisions of 
144

 
 
 
 
 
 
 
 
 
 
 
Table of Contents
Index to Financial Statements

Noble Energy, Inc.
Supplemental Oil and Gas Information
(Unaudited)

292 Bcf were associated with the integration of the Tamar 8 well results into our geologic modeling across the reservoir. Positive price 
revisions were approximately 71 Bcf. 

(3)  The 2015 increase in US reserves included an increase of 176 Bcf in the DJ Basin and 81 Bcf from Marcellus Shale development due to 

positive producing well performance and optimized lateral lengths.

The 2016 increase in US reserves included positive performance revisions associated with our horizontal drilling programs including 230 
Bcf in the Marcellus Shale, 185 Bcf in the DJ Basin, and 77 Bcf in the Delaware Basin and Eagle Ford Shale.

The 2017 increase in US reserves included additions of 224 Bcf in the DJ Basin, 53 Bcf in the Delaware Basin and 22 Bcf in the Eagle 
Ford Shale primarily due to the addition of planned new locations and activity. The 2017 increase in Israel reserves represented sanction 
of the first phase of development of the Leviathan natural gas project.

(4)  The 2015 increase was attributable to reserves acquired in the Rosetta Merger.

The 2017 increase was attributable to the reserves acquired in the Clayton Williams Energy Acquisition.

(5) 

In 2016, we sold US onshore assets in the DJ Basin and Eagle Ford Shale. We also executed an acreage exchange in the Marcellus Shale 
where we relinquished 185 Bcf, and we reduced our ownership in the Tamar field, offshore Israel.

In 2017, we sold the Marcellus Shale upstream assets and other non-strategic US onshore assets.

See Items 1. and 2. Business and Properties – Proved Reserves Disclosures, Note 3. Clayton Williams Energy Acquisition and Note 4.  
Acquisitions, Divestitures and Merger.

145

Table of Contents
Index to Financial Statements

Noble Energy, Inc.
Supplemental Oil and Gas Information
(Unaudited)

Results of Operations for Oil and Gas Producing Activities (Unaudited)  Results of operations for crude oil and natural gas 
producing activities within the E&P reporting segments are as follows:

United
 States 

Israel

Equatorial
Guinea

Other
Int'l

Total

(millions)
Year Ended December 31, 2017
Revenues
Production Costs (1)
Exploration Expense
DD&A
Loss on Marcellus Shale Upstream Divestiture (2)
Asset Impairments (3)
(Loss) Income before Income Taxes
Income Tax Expense (Benefit) (4)
Results of Operations (5)
Year Ended December 31, 2016
Revenues
Production Costs (1)
Exploration Expense (6)
DD&A
Asset Impairments (4)
(Loss) Income before Income Taxes
Income Tax Expense (Benefit) (4)
Results of Operations (5)
Year Ended December 31, 2015
Revenues
Production Costs (1)
Exploration Expense
DD&A
Asset Impairments (3)
Income (Loss) before Income Taxes
Income Tax Expense (4)
Results of Operations (5)

$

$

$

$

$

$

$

3,156
1,199
102
1,739
2,379
63
(2,326)
(814)
(1,512) $

$

2,416
1,108
245
2,103
—
(1,040)
(364)
(676) $

$

2,011
916
202
1,677
158
(942)
(330)
(612) $

534
49
—
76
—
—
409
98
311

540
49
26
81
88
296
74
222

497
60
6
70
36
325
86
239

$

$

$

$

$

$

370
103
1
146
—
—
120
30
90

$

$

$

433
118
469
205
—
(359)
(90)
(269) $

$

580
145
1
326
339
(231)
(58)
(173) $

— $
2
85
4
—
7
(98)
—
(98) $

— $
1
185
6
4
(196)
—
(196) $

$

5
6
279
—
—
(280)
(5)
(275) $

4,060
1,353
188
1,965
2,379
70
(1,895)
(686)
(1,209)

3,389
1,276
925
2,395
92
(1,299)
(380)
(919)

3,093
1,127
488
2,073
533
(1,128)
(307)
(821)

(1)  Production costs consist of lease operating expense, production and ad valorem taxes, transportation and gathering expense, and general 

and administrative expense supporting oil and gas operations.

(2)  See Note 4. Acquisitions, Divestitures and Merger.
(3) 

2017 asset impairments relate primarily to the Gulf of Mexico Troubadour well. 

2016 asset impairments relate to certain Leviathan development concept costs. 

2015 asset impairments related to reductions in the forward crude oil prices as of December 31, 2015 and revisions in expected field 
abandonment and other costs for offshore properties. 
See Note 5.  Asset Impairments. 

(4) 

Income tax expense is based upon respective corporate statutory tax rates. During 2017, 2016, and 2015, we incurred exploration 
expense in currently non-commercial other international locations; therefore, no tax benefit was included in income tax expense 
associated with other international as we could not conclude it was more likely than not that some portion or all of the deferred tax assets 
would be realized.

(5)  Results of operations exclude the mark-to-market gain or loss on commodity derivative instruments, corporate overhead and interest 

costs. See Note 8.  Derivative Instruments and Hedging Activities.

(6)  Equatorial Guinea exploration expense includes amounts related to the write off of costs associated with certain discoveries. See Note 6.  

Capitalized Exploratory Well Costs and Undeveloped Leasehold Costs.

146

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents
Index to Financial Statements

Noble Energy, Inc.
Supplemental Oil and Gas Information
(Unaudited)

Costs Incurred in Oil and Gas Property Acquisition, Exploration and Development Activities (Unaudited)

Costs incurred include both capitalized costs and costs charged to expense when incurred for oil and gas property acquisition, 
exploration, and development activities associated with the E&P reporting segments. Costs incurred also include new AROs 
established in the current year, as well as changes to AROs resulting from changes to cost estimates during the year. Exploration 
costs presented below include the costs of drilling and equipping successful and unsuccessful exploration wells during the year, 
geological and geophysical expenses, and the costs of retaining undeveloped leaseholds. Development costs include the costs of 
drilling and equipping development wells. Costs associated with activities of our Midstream business and other corporate 
activities are not included.

United
States

Israel

Equatorial
 Guinea

Other
Int'l (1)

Total

(millions)

December 31, 2017
Property Acquisition Costs

Proved (2)
Unproved (2)

Exploration Costs (3)
Development Costs (4)
Total Consolidated Operations

December 31, 2016
Property Acquisition Costs

Proved (2)
Unproved (2)

Exploration Costs (4)
Development Costs (4)
Total Consolidated Operations

December 31, 2015
Property Acquisition Costs

Proved (2)
Unproved (2)

Exploration Costs (3)
Development Costs (4)
Total Consolidated Operations

$

$

$

$

$

$

839
1,817
59
1,870
4,585

$

$

— $
—
6
483
489

$

— $
234
264
905
1,403

$

— $
—
26
109
135

$

1,613
1,478
206
2,111
5,408

$

$

— $
—
22
104
126

$

— $
—
4
33
37

$

— $
—
25
31
56

$

— $
—
22
75
97

$

— $
—
90
(39)
51

$

— $
—
44
—
44

$

— $
2
234
10
246

$

839
1,817
159
2,347
5,162

—
234
359
1,045
1,638

1,613
1,480
484
2,300
5,877  

(1)  Other International includes Newfoundland, Suriname, Falkland Islands, other new ventures and previous North Sea operations, which 

are in the process of being decommissioned. 

(2) 

(3) 

2017 proved and unproved property acquisition costs include amounts allocated from the Clayton Williams Energy Acquisition (See 
Note 3.  Clayton Williams Energy Acquisition) and the Delaware Basin Acquisition (See Note 4. Acquisitions, Divestitures and Merger).

2016 unproved property acquisition costs relate to the termination of the Marcellus Shale joint development agreement.  See Note 4.  
Acquisitions, Divestitures and Merger.

2015 proved and unproved property acquisition costs include amounts allocated from the Rosetta Merger.  See Note 4.  Acquisitions, 
Divestitures and Merger.

2017 exploration costs include primarily capitalized interest on Gulf of Mexico projects, and $7 million dry hole cost related to the 
Araku-1 exploration well, offshore Suriname. The remainder relates to seismic expense and drilling costs.

2016 exploration costs include drilling and completion of $44 million in the Gulf of Mexico. 

2015 exploration costs include drilling and completion of $22 million in the Gulf of Mexico.

(4)  Worldwide development costs include amounts spent to develop PUDs of approximately $1.2 billion in 2017, $656 million in 2016, and 

$1.5 billion in 2015.

Israel development costs include $416 million related to initial development of the Leviathan field and $63 million related to the Tamar 8 
development well in 2017. Amounts incurred in 2016 and 2015 related primarily to development of the Tamar discovery.

Equatorial Guinea development costs primarily relate to the Alba field unitization project in 2017 and drilling and well completion and 
installation and construction of a compression platform in the Alba field in 2016 and 2015.

147

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents
Index to Financial Statements

Noble Energy, Inc.
Supplemental Oil and Gas Information
(Unaudited)

US development costs include a decrease of $17 million in asset retirement obligations due to downward revisions and increases of $20 
million in 2016 and $194 million in 2015.

Israel development costs include increases in asset retirement obligations of $4 million in 2017 and $46 million in 2015.

Equatorial Guinea development costs include increases (decreases) in asset retirement obligations of $14 million in 2017 and $(10) 
million in 2015.

Other International development costs include increases (decreases) in asset retirement obligations of $(40) million in 2017 mainly 
associated with the North Sea abandonment project and $2 million in 2015.

Capitalized Costs Relating to Oil and Gas Producing Activities (Unaudited)  Aggregate capitalized costs relating to crude 
oil and natural gas producing activities within the E&P reporting segments are as follows:

(millions)
Unproved Oil and Gas Properties (1)
Proved Oil and Gas Properties (2)
Total Oil and Gas Properties
Accumulated DD&A

Net Capitalized Costs

December 31,

2017

2016

$

2,978

$

26,111

29,089
(12,538)
16,551

$

$

2,197

27,530

29,727
(12,265)
17,462

(1)  Unproved oil and gas property cost at December 31, 2017 include previous acquisition costs of $1.6 billion related to the Clayton 
Williams Energy Acquisition, and $1.1 billion and $149 million related to the Delaware Basin and Eagle Ford Shale properties.

Unproved oil and gas property cost at December 31, 2016 include previous acquisition costs of $1.2 billion related to the Eagle Ford 
Shale and Delaware Basin properties and $758 million related to Marcellus Shale properties.

(2)  Proved oil and gas properties at December 31, 2017 include asset retirement costs of $941 million and  assets held for sale of $448 

million.

Proved oil and gas properties at December 31, 2016 include asset retirement costs of $884 million and $18 million of assets held for sale.

148

 
 
 
Table of Contents
Index to Financial Statements

Noble Energy, Inc.
Supplemental Oil and Gas Information
(Unaudited)

Standardized Measure of Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves (Unaudited)  The 
following information is based on our best estimate of the required data for the Standardized Measure of Discounted Future Net 
Cash Flows in accordance with US GAAP. The standards require the use of a 10% discount rate. This information is not the fair 
value nor does it represent the expected present value of future cash flows of our proved oil and gas reserves.

United
States

Israel (1)

Equatorial
 Guinea

Other
Int'l (2)

Total

(millions)
December 31, 2017
Future Cash Inflows (3)
Future Production Costs (4)
Future Development Costs (5)
Future Income Tax Expense (6)
Future Net Cash Flows
10% Annual Discount for Estimated Timing of Cash Flows
Standardized Measure of Discounted Future Net Cash Flows
December 31, 2016
Future Cash Inflows (3)
Future Production Costs (4)
Future Development Costs (5)
Future Income Tax Expense
Future Net Cash Flows
10% Annual Discount for Estimated Timing of Cash Flows
Standardized Measure of Discounted Future Net Cash Flows
December 31, 2015
Future Cash Inflows (3)
Future Production Costs (4)
Future Development Costs (5)
Future Income Tax Expense
Future Net Cash Flows
10% Annual Discount for Estimated Timing of Cash Flows
Standardized Measure of Discounted Future Net Cash Flows

$ 30,061
(11,020)
(5,941)
(948)
12,152
(5,202)
6,950

$

$ 19,924
(8,756)
(4,813)
(941)
5,414
(2,308)
3,106

$

$ 19,099
(8,728)
(4,092)
(837)
5,442
(2,100)
3,342

$

$

$

$

$

$

$

29,998
(2,517)
(1,706)
(13,088)
12,687
(8,993)
3,694

10,159
(764)
(725)
(4,228)
4,442
(2,329)
2,113

11,835
(1,128)
(682)
(5,281)
4,744
(2,452)
2,292

$

$

$

$

$

$

2,028
(932)
(109)
(216)
771
(113)
658

$ — $ 62,087
— (14,469)
(51)
(7,807)
— (14,252)
(51)
25,559
(14,301)
7
(44) $ 11,258

$

1,851
(1,001)
(83)
(141)
626
(84)
542

2,965
(1,351)
(101)
(189)
1,324
(262)
1,062

$ — $ 31,934
— (10,521)
(5,721)
(5,310)
10,382
(4,696)
5,686

(100)
—
(100)
25
(75) $

$

$ — $ 33,899
— (11,207)
(4,975)
(6,307)
11,410
(4,782)
6,628

(100)
—
(100)
32
(68) $

$

(1) 

In accordance with the Framework, we are required to reduce our ownership in the Tamar and Dalit fields from 36% to 25% by year-end 
2021. During 2016, we reduced our ownership to 32.5% through the sale of a 3.5% interest. Therefore, amounts at December 31, 2017 
and 2016 reflect a 32.5% working interest, while 2015 amounts reflect a 36% working interest. At December 31, 2017, 7.5% of our 
32.5% interest is included in assets held for sale. The portion of the standardized measure of discounted future net cash flows included in 
the table above, and associated with the interest currently held for sale, totals approximately $650 million at December 31, 2017. See 
Note 4. Acquisitions, Divestitures and Merger. The 2017 increase in the standardized measure of discounted future net cash inflows 
relates primarily to the sanction of the first phase of development of the Leviathan field. 

(2)  Other International represents North Sea abandonment costs.
(3)  The standardized measure of discounted future net cash flows does not include cash flows relating to anticipated future methanol sales. 
(4)  Production costs include lease operating expense, production and ad valorem taxes, transportation expense and general and 

administrative expense supporting crude oil and natural gas operations.

(5)  Future development costs include future abandonment costs for each location. See Note 9.  Asset Retirement Obligations.
(6)  Future income tax expense includes the effect of statutory tax rates and the impact of tax deductions, tax credits and allowances relating 
to our proved reserves. As of December 31, 2017, US future income tax expense includes the expected impact of the recent Tax Reform 
Legislation. As of December 31, 2017, 2016 and 2015, future income tax expense for Israel also includes the effect of estimated future 
profit levy taxes and changes to corporate income tax rates. 

149

 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents
Index to Financial Statements

Noble Energy, Inc.
Supplemental Oil and Gas Information
(Unaudited)

Prices and Other Assumptions in Discounted Future Net Cash Flows (Unaudited)  Future cash inflows are computed by 
applying a 12-month average commodity price, adjusted for location and quality differentials on a field-by-field basis, to year-
end quantities of proved reserves, except in those instances where fixed and determinable price changes are provided by 
contractual arrangements at year-end. The discounted future cash flow estimates do not include the effects of derivative 
instruments. Average prices per region are as follows:

December 31, 2017
Average Crude Oil and Condensate Price per Bbl
Average Natural Gas Price per Mcf
Average NGL Price per Bbl
December 31, 2016
Average Crude Oil and Condensate Price per Bbl
Average Natural Gas Price per Mcf
Average NGL Price per Bbl
December 31, 2015
Average Crude Oil and Condensate Price per Bbl
Average Natural Gas Price per Mcf
Average NGL Price per Bbl

United
 States

Israel

Equatorial
 Guinea

Total

$

$

$

$

$

$

47.81
2.83
22.32

37.36
2.07
14.30

42.03
2.16
14.15

$

$

$

46.82
5.43
—

36.05
5.07
—

48.23
5.08
—

$

$

$

53.12
0.27
37.23

42.45
0.27
26.12

51.03
0.27
29.92

48.13
4.54
23.02

37.87
3.02
14.94

43.50
3.18
15.23

The discounted future net cash flows are computed using a 12-month average commodity price applied to our year-end 
quantities of proved reserves, unless contractual arrangements designate the price to be used. We performed a sensitivity of our 
discounted future net cash flows to reflect a price reduction to our 12-month average commodity price. We estimate that a 10% 
per Bbl reduction in the average price of crude oil and NGLs from the 12-month average price for 2017 would reduce the 
discounted future net cash flows before income taxes by approximately $1.2 billion and $0.3 billion, respectively. We estimate 
that a 10% per Mcf reduction in the average price of natural gas from the 12-month average price for 2017 would reduce the 
discounted future net cash flows before income taxes by approximately $1 billion. 

Future production and development costs, which include dismantlement and restoration expense, are computed by estimating 
the expenditures to be incurred in developing and producing the proved crude oil, natural gas and NGL reserves at the end of 
the year, based on year-end costs, and assuming continuation of existing economic conditions. 

Future development costs include amounts that we expect to spend to develop PUDs of approximately $1.7 billion in 2018, 
$1.9 billion in 2019 and $1.4 billion in 2020. 

Future income tax expense is computed by applying the appropriate year-end statutory tax rates to the estimated future pre-tax 
net cash flows relating to proved crude oil, natural gas and NGL reserves, less the tax bases of the properties involved. Future 
income tax expense gives effect to tax credits and allowances, but does not reflect the impact of general and administrative 
costs and exploration expenses of ongoing operations. 

150

 
 
 
 
 
Table of Contents
Index to Financial Statements

Noble Energy, Inc.
Supplemental Oil and Gas Information
(Unaudited)

Sources of Changes in Discounted Future Net Cash Flows (Unaudited)  Principal changes in the aggregate standardized 
measure of discounted future net cash flows attributable to proved crude oil, natural gas and NGL reserves are as follows:

Year Ended December 31,
2016

2017

2015

(millions)
Standardized Measure of Discounted Future Net Cash Flows, Beginning of Year
Changes in  Standardized Measure of Discounted Future Net Cash Flows

Sales of Oil and Gas Produced, Net of Production Costs
Net Changes in Prices and Production Costs (1)
Extensions, Discoveries and Improved Recovery, Less Related Costs
Changes in Estimated Future Development Costs
Development Costs Incurred During the Period
Revisions of Previous Quantity Estimates
Purchases of Minerals in Place (2)
Sales of Minerals in Place
Accretion of Discount
Net Change in Income Taxes (3)
Change in Timing of Estimated Future Production and Other (4)

Aggregate Change in Standardized Measure of Discounted Future Net Cash Flows
Standardized Measure of Discounted Future Net Cash Flows, End of Year

$

5,686

$

6,628

$ 13,979

(2,674)
2,436
3,711
(537)
1,975
1,462
423
(643)
778
(1,669)
310
$
5,572
$ 11,258

(2,230)
(593)
463
(373)
1,090
364
161
(951)
919
414
(206)
(942)
5,686

(2,026)
(12,603)
442
1,135
2,639
(1,051)
2,747
(46)
1,789
2,075
(2,452)
(7,351)
6,628

$
$

$
$

(1)  The increase in 2017 and the decrease in 2015 were driven primarily by higher and lower, respectively, 12-month average commodity prices. 
(2)  Purchase of minerals in 2017 relates to reserves acquired in the Clayton Williams Energy Acquisition.

Purchase of minerals in 2015 relates to reserves acquired in the Rosetta Merger.

(3)  The increase in 2017 future income tax expense relates primarily to the increase in profit and levy taxes in Israel, partially offset by the 
decrease in future corporate income tax rate in Israel. The increase in profits tax is driven by a significant increase in future cash flows 
related to the Leviathan project sanctioning in 2017. The increase in US tax expense due to the increase in future taxable income was offset 
by the decrease in tax expense associated with utilization of future net operating losses and decrease in applicable tax rate from 35% to 21% 
due to the changes in the US Tax Law effective January 1, 2018. For 2015, future income tax expense for Israel includes the effect of 
estimated future profit levy taxes which partially offset the increase in future net cash flows.

(4)  The decrease in 2015 reflects revisions in our estimated timing of production and development activity.

151

 
 
Table of Contents
Index to Financial Statements

Noble Energy, Inc.
Supplemental Quarterly Financial Information
(Unaudited)

Supplemental quarterly financial information is as follows:

March 31,

Quarter Ended
Sep 30,

June 30,

Dec 31,

Total

(millions except per share amounts)
2017 (1) (3)
Revenues
Income (Loss) Before Income Taxes
Net Income (Loss)
Less: Net Income Attributable to Noncontrolling Interests
Net Income (Loss) Attributable to Noble Energy

Net Income (Loss) Per Share, Basic
Net Income (Loss) Per Share, Diluted
2016 (2) (3)
Revenues
Loss Before Income Taxes
Net Income (Loss)
Less: Net Income Attributable to Noncontrolling Interests
Net Loss Attributable to Noble Energy
Net Loss Per Share, Basic and Diluted
 (1)      First quarter 2017 included the following: 
•  No unusual or infrequent activity. 
Second quarter 2017 included the following:
• 

$

$

1,036
59
47
11
36

0.08
0.08

$

724
(453)
(287)
—
(287)
(0.67)

$ 1,059
(2,334)
(1,498)
14
(1,512)

(3.20)
(3.20)

847
(498)
(315)
—
(315)
(0.73)

$

$

960
(208)
(115)
21
(136)

$ 1,201
292
516
22
494

$ 4,256
(2,191)
(1,050)
68
(1,118)

(0.28)
(0.28)

910
(280)
(143)
1
(144)
(0.33)

1.01
1.01

(2.38)
(2.38)

$ 1,010
(541)
(240)
12
(252)
(0.59)

$ 3,491
(1,772)
(985)
13
(998)
(2.32)

$2.4 billion loss on Marcellus Shale upstream divestiture (See Note 4.  Acquisitions, Divestitures and Merger). 

       Third quarter 2017 included the following:

• 

$98 million loss on extinguishment of debt (See Note 10. Long-Term Debt).

       Fourth quarter 2017 included the following:

• 
• 

$270 million deferred tax benefit, net, related to recent changes in federal income tax regulations; and
$334 million gain on sale of mineral and royalty assets (See Note 4.  Acquisitions, Divestitures and Merger). 

(2)      First quarter 2016 included the following:

• 

$80 million gain on extinguishment of debt.

       Second quarter 2016 included the following:

• 

$25 million purchase price allocation adjustment related to Rosetta Merger (See Note 4.  Acquisitions, Divestitures and Merger). 

       Third quarter 2016 included the following:

• 

$81 million undeveloped leasehold impairment expense (See Note 6.  Capitalized Exploratory Well Costs and Undeveloped 
Leasehold Costs).

       Fourth quarter 2016 included the following:

• 

• 

$579 million dry hole costs included in exploration expense (See Note 6.  Capitalized Exploratory Well Costs and Undeveloped 
Leasehold Costs); and
$92 million property impairment charges (See Note 5.  Asset Impairments)

(3)  The sum of the individual quarterly earnings (loss) may not agree with year-to-date earnings (loss) as each quarterly computation is 

based on the earnings (loss) for the individual quarter as reported with rounding applied.

152

 
 
Table of Contents
Index to Financial Statements

Item 9.  Changes in and Disagreements with Accountants on Accounting and Financial Disclosure

None.

Item 9A. Controls and Procedures

Evaluation of Disclosure Controls and Procedures

We maintain disclosure controls and procedures that are designed to ensure that information required to be disclosed by us in 
the reports we file or furnish to the SEC under the Securities Exchange Act of 1934, as amended, is recorded, processed, 
summarized and reported within the time periods specified by the SEC’s rules and forms, and that information is accumulated 
and communicated to management, including our principal executive officer and principal financial officer, as appropriate, to 
allow timely decisions regarding required disclosure.

Our principal executive officer and principal financial officer have evaluated the effectiveness of our “disclosure controls and 
procedures,” as such term is defined in Rule 13a-15(e) and 15d-15(e) of the Securities Exchange Act of 1934, as amended, as 
of the end of the period covered by this Annual Report on Form 10-K. Based upon their evaluation, they have concluded that 
our disclosure controls and procedures were effective and provide an effective means to ensure that information required to be 
disclosed in the reports that we file or furnish under the Securities Exchange Act of 1934, as amended, is recorded, processed, 
summarized and reported within the time periods specified by the SEC's rules and forms and that information is accumulated 
and communicated to management, including our principal executive officer and principal financial officer, as appropriate, to 
allow timely decisions regarding required disclosure.

In designing and evaluating our disclosure controls and procedures, management recognizes that any controls and procedures, 
no matter how well designed and operated, can provide only reasonable, and not absolute, assurance that the objectives of the 
control system will be met. In addition, the design of any control system is based in part upon certain assumptions about the 
likelihood of future events and the application of judgment in evaluating the cost-benefit relationship of possible controls and 
procedures. Because of these and other inherent limitations of control systems, there is only reasonable assurance that our 
controls will succeed in achieving their goals under all future conditions.

Management’s Annual Report on Internal Control over Financial Reporting

The management report called for by Item 308(a) of Regulation S-K is incorporated herein by reference to Management’s 
Report on Internal Control over Financial Reporting, included in Item 8. Financial Statements and Supplementary Data.

The independent auditor’s attestation report called for by Item 308(b) of Regulation S-K is incorporated herein by reference to 
Report of Independent Registered Public Accounting Firm (Internal Control Over Financial Reporting), included in Item 
8. Financial Statements and Supplementary Data.

Changes in Internal Control over Financial Reporting

Our management is also responsible for establishing and maintaining adequate internal controls over financial reporting, as 
defined in Rules 13a-15(f) and 15d-15(f) of the Securities Exchange Act of 1934, as amended. Our internal controls were 
designed to provide reasonable assurance as to the reliability of our financial reporting and the preparation and presentation of 
the consolidated financial statements for external purposes in accordance with US GAAP.

Because of its inherent limitations, internal control over financial reporting may not detect or prevent misstatements. 
Projections of any evaluation of the effectiveness to future periods are subject to the risk that controls may become inadequate 
because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Our management has assessed the effectiveness of our internal controls over financial reporting as of December 31, 2017. 
Based on our assessment, our internal controls over financial reporting were effective. There were no changes in internal 
controls over financial reporting that occurred during the most recent fiscal quarter that have materially affected, or are 
reasonably likely to materially affect, our internal controls over financial reporting.

Item 9B.  Other Information

None.

153

Table of Contents
Index to Financial Statements

Item 10.  Directors, Executive Officers and Corporate Governance

PART III

The information required by this item is incorporated herein by reference to the 2018 Proxy Statement, which will be filed with 
the SEC not later than 120 days subsequent to December 31, 2017. 

Item 11.  Executive Compensation

The information required by this item is incorporated herein by reference to the 2018 Proxy Statement, which will be filed with 
the SEC not later than 120 days subsequent to December 31, 2017.

Item 12.  Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

The information required by this item is incorporated herein by reference to the 2018 Proxy Statement, which will be filed with 
the SEC not later than 120 days subsequent to December 31, 2017.

Item 13.  Certain Relationships and Related Transactions, and Director Independence

The information required by this item is incorporated herein by reference to the 2018 Proxy Statement, which will be filed with 
the SEC not later than 120 days subsequent to December 31, 2017.

Item 14.  Principal Accounting Fees and Services

The information required by this item is incorporated herein by reference to the 2018 Proxy Statement, which will be filed with 
the SEC not later than 120 days subsequent to December 31, 2017.

Item 15.  Exhibits, Financial Statement Schedules

(a)  The following documents are filed as a part of this report:

PART IV

(1)  Financial Statements: The consolidated financial statements and related notes, together with the reports of KPMG 

LLP, Independent Registered Public Accounting Firm, appear in Part II, Item 8, Financial Statements and 
Supplementary Data, of this Form 10-K.

(2)  Financial Statement Schedules: All schedules for which provision is made in the applicable accounting regulations of 

the SEC are not required under the related instruction or are inapplicable and, therefore, have been omitted.

(3)  Exhibits: The exhibits listed below on the Index to Exhibits are filed or incorporated by reference as part of this Form 

10-K.

154

Table of Contents
Index to Financial Statements

Exhibit Number

INDEX TO EXHIBITS

Exhibit **

2.1

2.2

2.3

— Agreement and Plan of Merger, dated as of January 13, 2017, by and among Noble Energy, Inc., Wild West 
Merger Sub Inc., NBL Permian LLC, and Clayton Williams Energy, Inc. (filed as Exhibit 2.1 to the 
Registrant’s Current Report on Form 8-K (Date of Report: January 13, 2017) filed January 17, 2017 and 
incorporated herein by reference).

— Agreement and Plan of Merger, dated as of May 10, 2015, by and among Noble Energy, Inc., Bluebonnet 
Merger Sub Inc. and Rosetta Resources Inc. (filed as Exhibit 2.1 to the Registrant’s Current Report on 
Form 8-K (Date of Report: May 10, 2015) filed May 11, 2015 and incorporated herein by reference).
— Exchange Agreement, executed October 29, 2016, by and between CNX Gas Company LLC and Noble 

Energy, Inc. (filed as Exhibit 2.3 to the Registrant’s Quarterly Report on Form 10-Q for the quarter ended 
September 30, 2016 and incorporated herein by reference).

2.4

— Purchase and Sale Agreement among Noble Energy, Inc. and HG Energy II Appalachia, LLC dated May 1, 

2017 (filed as Exhibit 2.1 to the Registrant’s Current Report on Form 8-K (Date of Report: May 1, 2017) 
filed May 5, 2017 and incorporated herein by reference).

2.5

2.6

3.1

— Purchase Agreement by and among Wheeling Creek Midstream, LLC, Noble Energy US Holdings, LLC 
and Noble Energy, Inc. dated May 17, 2017 (filed as Exhibit 2.1 to the Registrant’s Current Report on 
Form 8-K (Date of Report: May 17, 2017) filed May 23, 2017 and incorporated herein by reference).

— Letter Agreement by and among Wheeling Creek Midstream LLC, Noble Energy US Holdings, LLC and 

Noble Energy, Inc. dated December 7, 2017, filed herewith.

— Restated Certificate of Incorporation of Noble Energy, Inc. (filed as Exhibit 3.3 to the Registrant’s Current 
Report on Form 8-K (Date of Report: July 26, 2016) filed July 28, 2016 and incorporated herein by 
reference).

3.2

— By-Laws of Noble Energy, Inc. (as amended through January 30, 2018) (filed as Exhibit 3.1 to the 

Registrant’s Current Report on Form 8-K (Date of Report: January 30, 2018) filed on February 1, 2018 and 
incorporated herein by reference).

3.3

— Certificate of Elimination of the Series A Junior Participating Preferred Stock of Noble Energy, Inc. (filed 

as Exhibit 3.1 to the Registrant’s Current Report on Form 8-K (Date of Report: July 26, 2016) filed July 
28, 2016 and incorporated herein by reference).

3.4

— Certificate of Elimination of the Series B Mandatorily Convertible Preferred Stock of Noble Energy, Inc. 
(filed as Exhibit 3.2 to the Registrant’s Current Report on Form 8-K (Date of Report: July 26, 2016) filed 
July 28, 2016 and incorporated herein by reference).

4.1

— Indenture dated as of February 27, 2009 between Noble Energy, Inc. and Wells Fargo Bank, National 

Association, as Trustee, relating to senior debt securities of Noble Energy, Inc. (filed as Exhibit 4.1 to the 
Registrant’s Current Report on Form 8-K (Date of Report: February 24, 2009) filed February 27, 2009 
(File No. 001-07964) and incorporated herein by reference).

4.2

— Second Supplemental Indenture dated as of February 18, 2011, to Indenture dated as of February 27, 2009 
between Noble Energy, Inc. and Wells Fargo Bank, National Association, as Trustee, relating to the 
Registrant’s 6.000% Notes due 2041 (including the form of 2041 Notes) (filed as Exhibit 4.1 to the 
Registrant’s Current Report on Form 8-K (Date of Report: February 15, 2011) filed February 22, 2011 (File 
No. 001-07964) and incorporated herein by reference).

4.3

—

4.4

—

Third Supplemental Indenture dated as of December 8, 2011, to Indenture dated as of February 27, 2009 
between Noble Energy, Inc. and Wells Fargo Bank, National Association, as Trustee, relating to the 
Registrant’s 4.15% Notes due 2021 (including the form of 2021 Notes) (filed as Exhibit 4.2 to the 
Registrant’s Current Report on Form 8-K (Date of Report: December 5, 2011) filed December 8, 2011 (File 
No. 001-07964) and incorporated herein by reference).

Fourth Supplemental Indenture dated as of November 8, 2013, to Indenture dated as of February 27, 2009 
between Noble Energy, Inc. and Wells Fargo Bank, National Association, as Trustee, relating to the 
Registrant's 5.25% Notes due 2043 (including the form of 2043 Notes) (filed as Exhibit 4.1 to the 
Registrant’s Current Report on Form 8-K (Date of Report: November 5, 2013) filed November 8, 2013 
(File No. 001-07964) and incorporated herein by reference).

4.5

— Fifth Supplemental Indenture dated as of November 7, 2014, to Indenture dated as of February 27, 2009 
between Noble Energy, Inc. and Wells Fargo Bank, National Association, as Trustee, relating the 
Registrant’s 3.900% Notes due 2024  and 5.050% Notes due 2044 (including the forms of 2024 Notes and 
2044 Notes) (filed as Exhibit 4.1 to the Registrant’s Current Report on Form 8-K (Date of Report: 
November 4, 2014) filed November 7, 2014 (File No. 001-07964) and incorporated herein by reference).

155

 
 
Table of Contents
Index to Financial Statements

4.6

— Sixth Supplemental Indenture dated as of July 29, 2015, to Indenture dated as of February 27, 2009 
between Noble Energy, Inc. and Wells Fargo Bank, National Association, as Trustee, relating the 
Registrant’s 5.625% Notes due 2021, 5.875% Senior Notes due 2022 and 5.875% Notes due 2024 
(including the forms of 2021 Notes, 2022 Notes and 2024 Notes) (filed as Exhibit 4.2 to the Registrant’s 
Current Report on Form 8-K (Date of Report: July 29, 2015) filed July 31, 2015 and incorporated herein by 
reference).

4.7

— Seventh Supplemental Indenture dated as of August 15, 2017, to Indenture dated as of February 27, 2009 

between Noble Energy, Inc. and Wells Fargo Bank, National Association, as Trustee, relating to senior debt 
securities of Noble Energy, Inc. (filed as Exhibit 4.1 to the Registrant’s Current Report on Form 8-K (Date 
of Report: August 15, 2017) filed August 15, 2017 and incorporated herein by reference).

4.8

— Indenture dated as of October 14, 1993 between the Registrant and US Trust Company of Texas, N.A., as
Trustee, relating to the Registrant’s 7¼% Notes Due 2023 (including the form of 2023 Notes) (filed in
paper with the SEC as Exhibit 4.1 to the Registrant’s Quarterly Report on Form 10-Q for the quarter ended
September 30, 1993 on November 12, 1993 and incorporated herein by reference).

4.9

— Indenture dated as of April 1, 1997 between the Registrant and US Trust Company of Texas, N.A., as 

Trustee, relating to senior debt securities of Noble Energy, Inc. (filed with the SEC as Exhibit 4.1 to the 
Registrant’s Quarterly Report on Form 10-Q for the quarter ended March 31, 1997 on May 9, 1997 (File 
No. 001-07964) and incorporated herein by reference).

4.10

— First Indenture Supplement dated as of April 2, 1997, to Indenture dated as of April 1, 1997, between the 

Registrant and US Trust Company of Texas, N.A., as Trustee, relating to the Registrant’s 8% Senior Notes 
Due 2027 (including the form of 2027 Notes) (filed with the SEC as Exhibit 4.2 to the Registrant’s 
Quarterly Report on Form 10-Q for the quarter ended March 31, 1997 on May 9, 1997 (File No. 
001-07964) and incorporated herein by reference).

4.11

— Second Indenture Supplement, dated as of August 1, 1997, to Indenture dated as of April 1, 1997, between 

the Registrant and US Trust Company of Texas, N.A. as trustee, relating to the Registrant’s 7¼% Senior 
Debentures Due 2097 (including the form of 2097 Notes) (filed with the SEC as Exhibit 4.1 to the 
Registrant’s Quarterly Report on Form 10-Q for the quarter ended June 30, 1997 on August 13, 1997 (File 
No. 001-07964) and incorporated herein by reference).

10.1

— Credit Agreement, dated October 14, 2011, among Noble Energy, Inc., JPMorgan Chase Bank, N.A., as 

administrative agent, Citibank N.A., as syndication agent, Bank of America, N.A., Mizuho Corporate 
Bank, LTD., and Morgan Stanley MUFG Loan Partners, LLC, as documentation agents, and certain other 
commercial lending institutions named therein (filed as Exhibit 10.1 to the Registrant’s Current Report on 
Form 8-K (Date of Report: October 14, 2011) filed October 18, 2011 (File No. 001-07964) and 
incorporated herein by reference).

10.2

10.3

10.4

— Commitment Increase Agreement (Existing Lenders) dated September 28, 2012, among Noble Energy, 
Inc., JPMorgan Chase Bank, N.A., as administrative agent, and certain other commercial lending 
institutions party thereto (filed as Exhibit 10.1 to the Registrant’s Current Report on Form 8-K (Date of 
Report: September 28, 2012), filed October 2, 2012 (File No. 001-07964) and incorporated herein by 
reference).

— Commitment Increase Agreement (New Lenders) dated September 28, 2012, among Noble Energy, Inc., 
JPMorgan Chase Bank, N.A., as administrative agent, and certain other commercial lending institutions 
party thereto (filed as Exhibit 10.2 to the Registrant’s Current Report on Form 8-K (Date of Report: 
September 28, 2012), filed October 2, 2012 (File No. 001-07964) and incorporated herein by reference).
— First Amendment to Credit Agreement, dated October 3, 2013, by and among Noble Energy, Inc., NBL 
International Finance B.V., JPMorgan Chase Bank, N.A., as administrative agent, Citibank N.A., as 
syndication agent, and Bank of America, N.A., Bank of Tokyo-Mitsubishi UFJ, Ltd., Mizuho Bank, Ltd. 
and DNB Bank ASA, New York Branch as documentation agents, and the other commercial lending 
institutions party thereto (filed as Exhibit 10.1 to the Registrant’s Current Report on Form 8-K (Date of 
Report: October 3, 2013) filed October 9, 2013 (File No. 001-07964) and incorporated herein by 
reference).

10.5

— Second Amendment to Credit Agreement, dated August 27, 2015, by and among Noble Energy, Inc., 

JPMorgan Chase Bank, N.A., as administrative agent, Citibank N.A., as syndication agent, and Bank of 
America, N.A., Bank of Tokyo-Mitsubishi UFJ, Ltd., Mizuho Bank, Ltd. and DNB Bank ASA, New York 
Branch as documentation agents, and the other commercial lending institutions party thereto (filed as 
Exhibit 10.1 to the Registrant’s Current Report on Form 8-K (Date of Report: August 27, 2015) filed 
August 31, 2015 and incorporated herein by reference).

10.6

— Term Loan Agreement as of January 6, 2016 among Noble Energy, Inc., Citibank, N.A., as administrative 
agent, Mizuho Bank, Ltd., as syndication agent and certain financial institutions as are or may become 
parties thereto (filed as Exhibit 10.1 to the Registrant’s Current Report on Form 8-K (Date of Report: 
January 6, 2016) filed January 7, 2016 and incorporated herein by reference).

10.7*

— Noble Energy, Inc. Retirement Restoration Plan dated effective as of January 1, 2009 (filed as Exhibit 10.1 

to the Registrant’s Annual Report on Form 10-K for the year ended December 31, 2008 (File No. 
001-07964) and incorporated herein by reference).

156

Table of Contents
Index to Financial Statements

10.8*

10.9*

— Amendment No. 1 to the Noble Energy, Inc. Retirement Restoration Plan, dated effective as of December 
31, 2013 (filed as Exhibit 10.1 to the Registrant’s Current Report on Form 8-K (Date of Report: December 
20, 2013) filed December 23, 2013 (File No. 001-07964) and incorporated herein by reference).

— Noble Energy, Inc. Restoration Trust effective August 1, 2002 (filed as Exhibit 10.3 to the Registrant’s 
Annual Report on Form 10-K for the year ended December 31, 2002 (File No. 001-07964) and 
incorporated herein by reference).

10.10* — Form of Indemnity Agreement entered into between the Registrant and each of the Registrant’s directors

and bylaw officers (filed in paper with the SEC as Exhibit 10.18 to the Registrant’s Annual Report on
Form 10-K405 for the year ended December 31, 1995 on March 25, 1996 (File No. 001-07964) and
incorporated herein by reference).

10.11* — Noble Energy, Inc. 2005 Non-Employee Director Fee Deferral Plan, dated December 11, 2008, and 

effective as of January 1, 2009 (filed as Exhibit 10.20 to the Registrant’s Annual Report on Form 10-K for 
the year ended December 31, 2008 (File No. 001-07964) and incorporated herein by reference).

10.12* — 2015 Stock Plan for Non-Employee Directors of Noble Energy, Inc. (as amended and restated effective 

October 20, 2015) (filed as Exhibit 10.4 to the Registrant’s Quarterly Report on Form 10-Q for the quarter 
ended September 30, 2015 and incorporated herein by reference).

10.13* — Form of Stock Option Agreement under the Noble Energy, Inc. 2015 Non-Employee Director Stock Plan 
(filed as Exhibit 10.7 to the Registrant’s Current Report on Form 8-K (Date of Report: January 25, 2016) 
filed January 29, 2016 and incorporated herein by reference).

10.14* — Form of Restricted Stock Agreement under the Noble Energy, Inc. 2015 Non-Employee Director Stock 
Plan (filed as Exhibit 10.6 to the Registrant’s Current Report on Form 8-K (Date of Report: January 25, 
2016) filed January 29, 2016 and incorporated herein by reference). 

10.15* — 2005 Stock Plan for Non-Employee Directors of Noble Energy, Inc. (as amended and restated effective 

October 20, 2015) (filed as Exhibit 10.3 to the Registrant’s Quarterly Report on Form 10-Q for the quarter 
ended September 30, 2015 and incorporated herein by reference).

10.16* — Form of Stock Option Agreement under the Noble Energy, Inc. 2005 Non-Employee Director Stock Plan 

(filed as Exhibit 10.1 to the Registrant’s Quarterly Report on Form 10-Q for the quarter ended June 30, 
2005 (File No. 001-07964) and incorporated herein by reference).

10.17* — Form of Restricted Stock Agreement under the Noble Energy, Inc. 2005 Non-Employee Director Stock 
Plan (filed as Exhibit 10.1 to the Registrant’s Current Report on Form 8-K (Date of Report: January 27, 
2009) filed February 2, 2009 (File No. 001-07964) and incorporated herein by reference).

10.18* — Noble Energy, Inc. 1992 Stock Option and Restricted Stock Plan (as amended and restated effective 

October 20, 2015) (filed as Exhibit 10.2 to Registrant’s Quarterly report on Form 10-Q for the quarter 
ended September 30, 2015 (File No. 001-07964) and incorporated herein by reference).

10.19* — Form of Nonqualified Stock Option Agreement under the Noble Energy, Inc. 1992 Stock Option and 
Restricted Stock Plan (filed as Exhibit 10.1 to the Registrant’s Current Report on Form 8-K (Date of 
Report: February 1, 2005) filed February 7, 2005 (File No. 001-07964) and incorporated herein by 
reference).

10.20* — Form of Non-Qualified Stock Option Agreement under the Noble Energy, Inc. 1992 Stock Option and 

Restricted Stock Plan (filed as Exhibit 10.24 to the Registrant’s Annual Report on Form 10-K for the year 
ended December 31, 2012 (File No. 001-07964) and incorporated herein by reference).
10.21* — Form of Restricted Stock Agreement (two-year vested) under the Noble Energy, Inc. 1992 Stock Option 
and Restricted Stock Plan (filed as Exhibit 10.25 to the Registrant’s Annual Report on Form 10-K for the 
year ended December 31, 2012 (File No. 001-07964) and incorporated herein by reference).

10.22* — Form of Restricted Stock Agreement (three-year vested awards) under the Noble Energy, Inc. 1992 Stock 
Option and Restricted Stock Plan (filed as Exhibit 10.26 to the Registrant’s Annual Report on Form 10-K 
for the year ended December 31, 2012 (File No. 001-07964) and incorporated herein by reference).

10.23* — Form of Restricted Stock Agreement (performance-vested) under the Noble Energy, Inc. 1992 Stock 

Option and Restricted Stock Plan (filed as Exhibit 10.27 to the Registrant’s Annual Report on Form 10-K 
for the year ended December 31, 2012 (File No. 001-07964) and incorporated herein by reference).

10.24* — Form of Non-Qualified Stock Option Agreement under the Noble Energy, Inc. 1992 Stock Option and 

Restricted Stock Plan (effective February 1, 2016) (filed as Exhibit 10.5 to the Registrant’s Current Report 
on Form 8-K (Date of Report: January 25, 2016) filed January 29, 2016 (File No. 001-07964) and 
incorporated herein by reference).

10.25* — Form of Restricted Stock Agreement (two-year time vested for non-PEO executive officers) under the 
Noble Energy, Inc. 1992 Stock Option and Restricted Stock Plan (effective February 1, 2016) (filed as 
Exhibit 10.2 to the Registrant’s Current Report on Form 8-K (Date of Report: January 25, 2016) filed 
January 29, 2016 and incorporated herein by reference).

10.26* — Form of Restricted Stock Agreement (two-year time vested) under the Noble Energy, Inc. 1992 Stock 

Option and Restricted Stock Plan (effective February 1, 2016) (filed as Exhibit 10.26 to the Registrant’s 
Annual Report on Form 10-K for the year ended December 31, 2016 and incorporated herein by reference).

157

Table of Contents
Index to Financial Statements

10.27* — Form of Performance Award Agreement (3-year performance vested stock and cash) under the Noble 

Energy, Inc. 1992 Stock Option and Restricted Stock Plan (effective February 1, 2016) (filed as Exhibit 
10.1 to the Registrant’s Current Report on Form 8-K (Date of Report: January 25, 2016) filed January 29, 
2016 and incorporated herein by reference).

10.28* — Form of Cash Award Agreement (two-year vested) under the Noble Energy, Inc. 1992 Stock Option and 

Restricted Stock Plan (effective February 1, 2016) (filed as Exhibit 10.4 to the Registrant’s Current Report 
on Form 8-K (Date of Report: January 25, 2016) filed January 29, 2016 and incorporated herein by 
reference).

10.29* — Form of Restricted Stock Agreement (three-year performance-vested) under the Noble Energy, Inc. 1992 

Stock Option and Restricted Stock Plan (effective February 1, 2016) (filed as Exhibit 10.8 to the 
Registrant's Current Report on Form 8-K/A (Date of Report: January 25, 2016) filed February 4, 2016 and 
incorporated herein by reference).

10.30* — Noble Energy, Inc. 2017 Long-Term Incentive Plan (incorporated by reference to Appendix C to the 
Company’s Definitive Proxy Statement on Schedule 14A filed on March 2, 2017).

10.31* — Form of Restricted Stock Award (two-year vested) under the Noble Energy, Inc. 2017 Long-Term Incentive 
Plan (filed as Exhibit 10.5 to the Registrant’s Quarterly Report on Form 10-Q for the quarter ended March 
31, 2017 and incorporated herein by reference).

10.32* — Form of Restricted Stock Award (three-year vested) under the Noble Energy, Inc. 2017 Long-Term 

Incentive Plan (filed as Exhibit 10.6 to the Registrant’s Quarterly Report on Form 10-Q for the quarter 
ended March 31, 2017 and incorporated herein by reference).

10.33* — Form of Stock Option Award under the Noble Energy, Inc. 2017 Long-Term Incentive Plan (filed as 

Exhibit 10.7 to the Registrant’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2017 and 
incorporated herein by reference).

10.34* — Form of Performance Share Award under the Noble Energy, Inc. 2017 Long-Term Incentive Plan (filed as 
Exhibit 10.8 to the Registrant’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2017 and 
incorporated herein by reference).

10.35* — Form of Restricted Stock Award (3-year time-vested officers) under the Noble Energy, Inc. 2017 Long-

Term Incentive Plan (filed as Exhibit 10.1 to the Registrant’s Current Report on Form 8-K (Date of Report: 
January 29, 2018) filed February 1, 2018 and incorporated herein by reference).

10.36* — Form of Restricted Stock Award (3-year cliff vested) under the Noble Energy, Inc. 2017 Long-Term 

Incentive Plan (filed as Exhibit 10.2 to the Registrant’s Current Report on Form 8-K (Date of Report: 
January 29, 2018) filed February 1, 2018 and incorporated herein by reference).

10.37* — Amendment to the Noble Energy, Inc. Change of Control Agreement dated effective February 1, 2011 

(filed as Exhibit 10.2 to the Registrant’s Current Report on Form 8-K (Date of Report: February 1, 2011), 
filed February 4, 2011 (File No. 001-07964) and incorporated herein by reference).

10.38* — Form of Noble Energy, Inc. Change of Control Agreement (as amended effective January 1, 2008), (filed as 
Exhibit 10.41 to the Registrant’s Annual Report on Form 10-K for the year ended December 31, 2007 (File 
No. 001-07964) and incorporated herein by reference).

10.39* — Noble Energy, Inc. Change of Control Severance Plan for Executives, as amended and restated (effective 

January 30, 2018) filed herewith.

10.40* — Termination of Change of Control Agreement dated effective October 21, 2014 by and between Noble 
Energy, Inc. and David L. Stover (filed as Exhibit 10.1 to the Registrant’s Current Report on Form 8-K 
(Date of Report: October 21, 2014) filed October 27, 2014 (File No. 001-07964) and incorporated herein 
by reference).

10.41* — Noble Energy, Inc. Deferred Compensation Plan (formerly known as the Noble Affiliates, Inc. Deferred 

Compensation Plan) as restated effective August 1, 2001 (filed as Exhibit 10.4 to the Registrant’s Annual 
Report on Form 10-K for the year ended December 31, 2002 (File No. 001-07964) and incorporated herein 
by reference).

10.42* — Amendment No. 1 to the Noble Energy, Inc. Deferred Compensation Plan (formerly known as the Noble 

Affiliates, Inc. Deferred Compensation Plan), dated effective as of January 1, 2014 (filed as Exhibit 10.2 to 
the Registrant’s Current Report on Form 8-K (Date of Report: December 20, 2013) filed December 23, 
2013 (File No. 001-07964) and incorporated herein by reference).

10.43* — Noble Energy, Inc. 2005 Deferred Compensation Plan (as amended effective January 1, 2009) (filed as 

Exhibit 10.31 to the Registrant’s Annual Report on Form 10-K for the year ended December 31, 2008 (File 
No. 001-07964) and incorporated herein by reference).

10.44* — Amendment No. 1 to the Noble Energy, Inc. 2005 Deferred Compensation Plan, dated effective as of 

January 1, 2014 (filed as Exhibit 10.3 to the Registrant’s Current Report on Form 8-K (Date of Report: 
December 20, 2013) filed December 23, 2013 (File No. 001-07964) and incorporated herein by reference).

10.45* — Amendment No. 2 to the Noble Energy, Inc. 2005 Deferred Compensation Plan, dated effective as of 

January 1, 2015 (filed as Exhibit 10.1 to the Registrant’s Quarterly Report on Form 10-Q for the quarter 
ended June 30, 2016 (File No. 001-07964) and incorporated herein by reference).

158

Table of Contents
Index to Financial Statements

10.46* — Amendment No. 3 to the Noble Energy, Inc. 2005 Deferred Compensation Plan, dated effective as of 

August 1, 2016 (filed as Exhibit 10.2 to the Registrant’s Quarterly Report on Form 10-Q for the quarter 
ended June 30, 2016 (File No. 001-07964) and incorporated herein by reference).

10.47

— Gas Sale and Purchase Agreement dated March 14, 2012, by and between Noble Energy Mediterranean 

Ltd. Isramco Negev 2 Limited Partnership, Delek Drilling Limited Partnership, Avner Oil Exploration 
Limited Partnership, and Dor Gas Exploration Limited Partnership (Sellers) and The Israel Electric 
Corporation Limited (Purchaser) (filed as Exhibit 10.1 to the Registrant's Quarterly Report on Form 10-Q/
A for the quarter ended March 31, 2012 (File No. 001-07964) and incorporated herein by reference).

10.48

— Amendment No. 1 dated July 22, 2012 to the Gas Sale and Purchase Agreement dated March 14, 2012, by 
and between Noble Energy Mediterranean Ltd. Isramco Negev 2 Limited Partnership, Delek Drilling 
Limited Partnership, Avner Oil Exploration Limited Partnership, and Dor Gas Exploration Limited 
Partnership (Sellers) and The Israel Electric Corporation Limited (Purchaser) (filed as Exhibit 10.1 to the 
Registrant's Quarterly Report on Form 10-Q for the quarter ended September 30, 2012 (File No. 
001-07964) and incorporated herein by reference).

10.49* —  Retention and Confidentiality Agreement between Noble Energy, Inc. and Charles D. Davidson, Chairman 

and Chief Executive Officer, effective as of August 14, 2014 (filed as Exhibit 10.1 to the Registrant’s 
Current Report on Form 8-K (Date of Report: August 14, 2014) filed August 19, 2014 (File No. 
001-07964) and incorporated herein by reference).

10.50

— Support Agreement, dated as of January 13, 2017, by and among certain stockholders affiliated with Ares 

Management, LLC, Noble Energy, Inc., and solely for certain purposes specified therein, Clayton Williams 
Energy, Inc. (filed as Exhibit 10.1 to the Registrant’s Current Report on Form 8-K (Date of Report: January 
13, 2017) filed January 17, 2017 and incorporated herein by reference).

10.51

— Agreement Not to Dissent, dated as of January 13, 2017, by and among Clayton W. Williams, Jr., Noble

Energy, Inc., and solely for certain purposes specified therein, Clayton Williams Energy, Inc. (filed as 
Exhibit 10.2 to the Registrant’s Current Report on Form 8-K (Date of Report: January 13, 2017) filed 
January 17, 2017 and incorporated herein by reference).

10.52

— Agreement Not to Dissent, dated as of January 13, 2017, by and among The Williams Children’s 

Partnership, Ltd., Noble Energy, Inc., and solely for certain purposes specified therein, Clayton Williams 
Energy, Inc. (filed as Exhibit 10.3 to the Registrant’s Current Report on Form 8-K (Date of Report: January 
13, 2017) filed January 17, 2017 and incorporated herein by reference).

10.53† — Noble Energy Mediterranean Ltd. Facility Agreement, dated February 24, 2017 by and between NEML 

Leviathan Finance Company LTD as Borrower and BNP Paribas, Credit Agricole Corporate and 
Investment Bank, ING Bank N.V. Natixis and Societe Generale London Branch as Mandated Lead 
Arrangers (filed as Exhibit 10.9 to the Registrant’s Quarterly Report on Form 10-Q for the quarter ended 
March 31, 2017 and incorporated herein by reference).

12.1

21

23.1

23.2

— Calculation of ratio of earnings to fixed charges, filed herewith.

— Subsidiaries, filed herewith.

— Consent of Independent Registered Public Accounting Firm—KPMG LLP, filed herewith.

— Consent of Independent Petroleum Engineers and Geologists—Netherland, Sewell & Associates, Inc., filed 

herewith.

31.1

— Certification of the Registrant's Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act 

of 2002 (18 USC. Section 7241), filed herewith.

31.2

— Certification of the Registrant's Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act 

of 2002 (18 USC. Section 7241), filed herewith.

32.1

— Certification of the Registrant’s Chief Executive Officer Pursuant to Section 906 of the Sarbanes-Oxley Act 

of 2002 (18 USC. Section 1350), filed herewith.

32.2

— Certification of the Registrant’s Chief Financial Officer Pursuant to Section 906 of the Sarbanes-Oxley Act 

of 2002 (18 USC. Section 1350), filed herewith.

99.1

— Report of Netherland, Sewell & Associates, Inc., filed herewith.

101.INS — XBRL Instance Document

101.SCH — XBRL Schema Document

101.CAL — XBRL Calculation Linkbase Document
101.LAB — XBRL Label Linkbase Document

101.PRE — XBRL Presentation Linkbase Document

101.DEF — XBRL Definition Linkbase Document

*

Management contract or compensatory plan or arrangement required to be filed as an exhibit hereto.

159

Table of Contents
Index to Financial Statements

**

†

Copies of exhibits will be furnished upon prepayment of 25 cents per page. Requests should be addressed to the
Executive Vice President and Chief Financial Officer, Noble Energy, Inc., 1001 Noble Energy Way, Houston, Texas
77070.

Confidential treatment granted under Rule 24b-2 as to certain portions of this exhibit, which are omitted and filed
separately with the Commission.

Item 16.  Form 10-K Summary

See Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations – Executive Summary.

160

Table of Contents
Index to Financial Statements

In this report, the following abbreviations are used:

GLOSSARY

Bbl
BBoe
Bcf
Bcf/d
BCM
BOE

Boe/d
Btu
FPSO
GHG
GSPA
HH
IDP
LNG
LPG
MBbl/d
MBoe/d
Mcf
MMBbls
MMBoe
MMBtu
MMBtu/d
MMcf/d
MMcfe/d
MMgal
NGLs
NYMEX
OPEC
PSC
Tcf
US GAAP
WTI

Barrel
Billion barrels oil equivalent
Billion cubic feet
Billion cubic feet per day
Billion cubic meters
Barrels oil equivalent. Natural gas is converted on the basis of six Mcf of gas per one barrel of crude oil
equivalent. This ratio reflects an energy content equivalency and not a price or revenue equivalency. Given
commodity price disparities, the price for a barrel of crude oil equivalent for natural gas is significantly
less than the price for a barrel of crude oil. The price for a barrel of NGL is also less than the price for a
barrel of crude oil.
Barrels oil equivalent per day
British thermal unit
Floating production, storage and offloading vessel
Greenhouse gas emissions
Gas Sales Purchase Agreement
Henry Hub index
Integrated Development Plan
Liquefied natural gas
Liquefied petroleum gas
Thousand barrels per day
Thousand barrels oil equivalent per day
Thousand cubic feet

  Million barrels
  Million barrels oil equivalent
  Million British thermal units

Million British thermal units per day

  Million cubic feet per day
  Million cubic feet equivalent per day
  Million gallons

Natural gas liquids
The New York Mercantile Exchange
The Organization of Petroleum Exporting Countries
Production sharing contract
Trillion cubic feet
United States generally accepted accounting principles

  West Texas Intermediate index

161

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents
Index to Financial Statements

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this 
report to be signed on its behalf by the undersigned, thereunto duly authorized.

SIGNATURES

Date: February 20, 2018

Date: February 20, 2018

Date: February 20, 2018

NOBLE ENERGY, INC.
(Registrant)

By: /s/ David L. Stover
David L. Stover,
Chairman of the Board, President and Chief Executive Officer

By: /s/ Kenneth M. Fisher
Kenneth M. Fisher,
Executive Vice President, Chief Financial Officer

By: /s/ Dustin A. Hatley
Dustin A. Hatley,
Vice President, Chief Accounting Officer and Controller

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following 
persons on behalf of the Registrant and in the capacities and on the dates indicated.

Signature

  Capacity in which signed

  Date

/s/ David L. Stover
David L. Stover

/s/ Kenneth M. Fisher

Kenneth M. Fisher

/s/ Dustin A. Hatley
Dustin A. Hatley

/s/ Jeffrey L. Berenson
Jeffrey L. Berenson

/s/ Michael A. Cawley
Michael A. Cawley

/s/ Edward F. Cox
Edward F. Cox

/s/ James E. Craddock
James E. Craddock

/s/ Thomas J. Edelman
Thomas J. Edelman

/s/ Kirby L. Hedrick
Kirby L. Hedrick

/s/ Holli C. Ladhani
Holli C. Ladhani

/s/ Scott D. Urban
Scott D. Urban

/s/ William T. Van Kleef
William T. Van Kleef

/s/ Molly K. Williamson
Molly K. Williamson

Chairman of the Board, President and Chief Executive
Officer
(Principal Executive Officer)

February 20, 2018

  Executive Vice President, Chief Financial Officer

  February 20, 2018

(Principal Financial Officer)

  Vice President, Chief Accounting Officer and Controller

  February 20, 2018

(Principal Accounting Officer)

Director

Director

Director

Director

Director

Director

Director

Director

Director

February 20, 2018

February 20, 2018

February 20, 2018

February 20, 2018

February 20, 2018

February 20, 2018

February 20, 2018

February 20, 2018

February 20, 2018

  Director

  February 20, 2018

162

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Directors

Executive Officers

General Information

Annual Meeting
The Annual Meeting of Stockholders of Noble 
Energy, Inc. will be held on April 24, 2018, at 9:30 
a.m. Central Time, at The St. Regis, 1919 Briar Oaks 
Lane, Houston, Texas 77027 
All stockholders are cordially invited to attend.

Form 10-K
The company’s Annual Report on Form 10-K for the 
year ended on December 31, 2017, as filed with 
the Securities and Exchange Commission (SEC), 
is included in this report. Additional copies are 
available without charge upon request by writing 
to: Investor Relations, Noble Energy, Inc., 1001 
Noble Energy Way, Houston, Texas 77070; via the 
company’s website: www.nblenergy.com; or via the 
SEC’s website: www.sec.gov.

Noble Energy, Inc. Corporate Headquarters
1001 Noble Energy Way, Houston, Texas 77070
281.872.3100, www.nblenergy.com

Investor Relations
Brad Whitmarsh, Vice President, Investor Relations
281.872.3100, investor_relations@nblenergy.com

Communications and Media Relations
Ben Dillon, Vice President, Communications and 
Government Relations, 281.872.3100,  
media@nblenergy.com

Independent Public Accountants
KPMG LLP

Transfer Agent and Registrar
Wells Fargo Bank, N.A., Shareowner Services,
P.O. Box 64854, St. Paul, MN 55164-0854
800.468.9716, www.shareowneronline.com

Common Stock Listed
New York Stock Exhange, Symbol – NBL

David L. Stover •
Chairman, President and
Chief Executive Officer,
Noble Energy, Inc.

Jeffrey L. Berenson • •
Chairman and Chief
Executive Officer,
Berenson Holdings LLC

Michael A. Cawley • •
President and Manager,
The Cawley Consulting
Group, LLC

Edward F. Cox • • •
Chair, New York Republican
State Committee

James E. Craddock • • •
Former Chief Executive
Officer, Rosetta
Resources Inc.

Thomas J. Edelman • • •
Managing Partner,
White Deer Energy LP

Kirby L. Hedrick • • •
Former Executive Vice
President, Phillips Petroleum
Company

Holli C. Landhani •
President and CEO,
Select Energy Services, Inc.

Scott D. Urban • • •
Partner, Edgewater
Energy LLC

William T. Van Kleef • •
Former Executive Vice
President and Chief
Operating Officer,
Tesoro Corporation

Molly K. Williamson • • •
Scholar with Middle
East Institute

      _______________         

Committee Membership

• Audit Committee
• Compensation, Benefits 

and Stock Option 
Committee

• Corporate Governance and 

Nominating Committee
• Environment, Health and 

Safety Committee

 Departs Noble Energy 
   Board of Directors April 2018

David L. Stover
Chairman, President and
Chief Executive Officer

Kenneth M. Fisher
Executive Vice President
and Chief Financial Officer

Gary W. Willingham
Executive Vice President,
Operations

J. Keith Elliott
Senior Vice President, 
Offshore

Terry R. Gerhart
Senior Vice President,
Midstream

John T. Lewis
Senior Vice President,
Corporate Development

Charles J. Rimer
Senior Vice President,
Global Services

A. Lee Robison
Senior Vice President, 
Human Resources and 
Administration

T. Hodge Walker
Senior Vice President, 
U.S. Onshore

     _______________         

Forward-Looking 
Statements

This 2017 Annual Report to 

Stockholders contains forward-

looking statements based 

on expectations, estimates 

and projections as of the 

date of this report. These 

statements by their nature are 

subject to risks, uncertainties 

and assumptions and are 

influenced by various factors. 

As a consequence, actual 

results may differ materially 

from those expressed in the 

forward-looking statements. 

For more information, see 

“Disclosure Regarding 

Forward-Looking Statements” 

in Noble Energy’s Form 10-K 

included in this report.

l

N

o

b

l

e

E

n

e

r

g

y

,

I

n

c

.

2

0

1

7

A

n

n

u

a

l

R

e

p

o

r

t

www.nblenergy.com