Quarterlytics / Energy / Oil & Gas Exploration & Production / Whiting Petroleum Corporation

Whiting Petroleum Corporation

wll · NYSE Energy
Claim this profile
Ticker wll
Exchange NYSE
Sector Energy
Industry Oil & Gas Exploration & Production
Employees 1001-5000
← All annual reports
FY2012 Annual Report · Whiting Petroleum Corporation
Sign in to download
Loading PDF…
fp_Cover  3/15/13  2:44 PM  Page 1

1700 Broadway, Suite 2300

Denver, Colorado 80290-2300

Tel: (303) 837-1661

Fax: (303) 861-4023

www.whiting.com

Whiting Petroleum Corporation
ANNUAL  REPORT 20 12

YEAR OF RECORD PRODUCTION

fp_Cover  3/15/13  2:44 PM  Page 2

ABOUT THE COVER

CONTENTS

EX ECUTIVE OFFICERS

OTHER OFFICERS

BOARD OF DIRECTORS

We are a Bakken oil company. With a focus on 
the Bakken/Three Forks in the Williston Basin, we 
generated record production of 30.21 MMBOE or
82,540 BOE per day in 2012. According to the 
December 2012 Oil and Gas Production Report 
published by the North Dakota State Industrial 
Commission, Department of Minerals, Oil and Gas
Division, Whiting was the number one oil producer
in North Dakota at 66,155.7 barrels per day. North
Dakota is the second largest oil producing state 
in the United States.

We were one of the first successful operators in the
Bakken/Three Forks Hydrocarbon System in the
Williston Basin with the discovery of our Sanish field
in early 2007. With our experience and expertise in
operating in the Williston Basin, we expect a very
good year for organic growth in reserves and production
in 2013. We expect to generate year-over-year 
production growth of between 12% and 16%. In the
Bakken and Three Forks hydrocarbon system in the
Williston Basin alone, we hold more than 700,000
net acres and continue to add to that position. 
Importantly, our average cost in this acreage is $521
per net acre.

ABBREVIATIONS

Bbl: One stock tank barrel, or 42 U.S. gallons liquid volume, used in
this report in reference to oil, NGLs and other liquid hydrocarbons.

Bcf: One billion cubic feet of natural gas.

BOE: One stock tank barrel equivalent of oil, calculated by 
converting natural gas volumes to equivalent oil barrels at a ratio 
of six Mcf to one Bbl of oil.

BOE/d: Barrels of oil equivalent per day.

Completion: The installation of permanent equipment for the 
production of crude oil or natural gas, or in the case of a dry
hole, the reporting of abandonment to the appropriate agency. 

EOR: Enhanced Oil Recovery is a tertiary recovery method in
which injectants, such as CO2, are introduced into a reservoir to
enhance hydrocarbon recovery.

MBOE: One thousand BOE.

Mcf: One thousand cubic feet of natural gas.

Mcfe: One thousand cubic feet of natural gas equivalent.

MMBbl: One million barrels.

MMBOE: One million BOE.

MMcf: One million cubic feet of natural gas.

MMcf/d: One million cubic feet of natural gas per day.

NGLs: Natural gas liquids.

PDP: Proved developed producing. 

PDNP: Proved developed nonproducing.

PUD: Proved undeveloped. 

Corporate Overview . . . . . . . . . . . . . . . . . . . . . . . 1

Financial and Operations Summary  . . . . . . . . . . . 2

Letter to the Shareholders  . . . . . . . . . . . . . . . . . . 4

Drilling and Operations Overview  . . . . . . . . . . . . 6

Williston Basin Oil Plays  . . . . . . . . . . . . . . . . . . . . 8

Other Development Areas  . . . . . . . . . . . . . . . . . 12

Optimization Programs  . . . . . . . . . . . . . . . . . . . 14

Building for the Future  . . . . . . . . . . . . . . . . . . . . 16

Board of Directors  . . . . . . . . . . . . . . . . . . . . . . . 20

Annual Report on Form 10-K  . . . . . . . . . . . . . . . 21

Corporate Investor Information

Inside back cover

RESERVE AND RESOURCE INFORMATION

Whiting uses in this annual report the terms proved, probable
and possible reserves. Proved reserves are reserves 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 under existing economic conditions, operating
methods and government regulations prior to the time at which
contracts providing the right to operate expire, unless eviden-
ceindicates that renewal is reasonably certain. Probable reserves are
reserves that are less certain to be recovered than proved reserves
but which, together with proved reserves, are as likely as not to be
recovered. Possible reserves are reserves that are less certain to be
recovered than probable reserves. Estimates of probable and possible
reserves which may potentially be recoverable through additional
drilling or recovery techniques are by nature more uncertain than
estimates of proved reserves and accordingly are subject to substan-
tially greater risk of not actually being realized by the Company.

Whiting uses in this annual report the term “total resources,”
which consists of contingent and prospective resources, which SEC
rules prohibit in filings of U.S. registrants. Contingent resources are
resources that are potentially recoverable but not yet considered
mature enough for commercial development due to technological
or business hurdles. For contingent resources to move into the 
reserves category, the key conditions, or contingencies, that pre-
vented commercial development must be clarified and removed.
Prospective resources are estimated volumes associated with undis-
covered accumulations. These represent quantities of petroleum
which are estimated to be potentially recoverable from oil and gas
deposits identified on the basis of indirect evidence but which 
have not yet been drilled. This class represents a higher risk than 
contingent resources since the risk of discovery is also added. For
prospective resources to become classified as contingent resources,
hydrocarbons must be discovered, the accumulations must be 
further evaluated and an estimate of quantities that would be 
recoverable under appropriate development projects prepared. 
Estimates of resources are by nature more uncertain than reserves
and accordingly are subject to substantially greater risk of not 
actually being realized by the Company.

FORWARD-LOOKING STATEMENTS

This  annual  report  contains  forward-looking  statements.  Please
refer  to  “Forward-Looking  Statements”  on  pages  70–71  of  the 
attached Annual Report on Form 10-K for an explanation of these
types of statements. These statements should be considered in light
of the “Risk Factors” set forth on page 22 of the attached Annual
Report on Form 10-K. 

JAMES J.VOLKER

Chairman of the Board 

and Chief Executive Officer

PETER W. HAGIST

Vice President, Permian Operations

for Whiting Oil and Gas Corporation

JAMES T. BROWN

President and Chief Operating Officer

CHUCK LACOUTURE

Vice President, Marketing 

                                                        DIRECTOR SINCE

JAMES J. VOLKER                           2003

Chairman of the Board 

and Chief Executive Officer

for Whiting Oil and Gas Corporation

THOMAS L. ALLER *+                    2003

MARK D. SONNENFELD

Vice President, Geoscience 

President

Interstate Power and 

Light Company,

for Whiting Oil and Gas Corporation

an Alliant Energy Company

Vice President and Chief Financial Officer

JOHN K. SOUTHWELL

D. SHERWIN ARTUS^                    2006

Vice President, Permian Exploration 

for Whiting Oil and Gas Corporation

Retired President and CEO

of Whiting

MARK R. WILLIAMS

Senior Vice President, Exploration 

and Development

MICHAEL J. STEVENS

BRUCE R. DEBOER

Vice President, General Counsel 

and Corporate Secretary

J. DOUGLAS LANG

and Acquisitions

DAVID M. SEERY

Vice President, Land

RICK A. ROSS

Vice President, Operations

BRENT P. JENSEN

Controller and Treasurer

Vice President, Reservoir Engineering 

for Whiting Oil and Gas Corporation

DOUGLAS L. WALTON

Vice President and 

National Drilling Manager 

ERIC K. HAGEN

Vice President, Investor Relations

JACK R. EKSTROM

Vice President, 

Corporate and Government Relations

HEATHER M. DUNCAN

Vice President, Human Resources

GALE N. KEITHLINE

Vice President, Information Technology

THOMAS P. BRIGGS*+(1)                2006

Inactive Certified 

Public Accountant

PHILIP E. DOTY*^                          2010

Certified Public Accountant

WILLIAM N. HAHNE +^                 2007

Past Chief Operating Officer

Petrohawk Energy

ALLAN R. LARSON^                       2011

Consulting Geologist

* Audit Committee

+ Compensation Committee

^ Nominating and Governance Committee

(1) Mr. Briggs’ term expires at the 2013 

annual meeting.

CORPORATE OFFICES

TRANSFER AGENT

Whiting Petroleum Corporation

Please direct communication regarding

1700 Broadway, Suite 2300

individual stock records and address

Denver, Colorado 80290-2300

changes to:

INFORMATION UPDATES

Whiting’s quarterly financial results and

other information are available on our

website at www.whiting.com

Securities analysts, investors and the 

www.computershare.com

Tel: (303) 837-1661 

Fax: (303) 861-4023

www.whiting.com

INVESTOR RELATIONS

financial media should contact:

John B. Kelso

Director, Investor Relations

Tel: (303) 837-1661

Eric K. Hagen

Vice President, Investor Relations

Tel: (303) 837-1661

Computershare Trust Company, N.A.

350 Indiana Street, Suite 800

Golden, Colorado 80401

Tel: (303) 262-0600 

Fax: (303) 262-0700

INDEPENDENT 

PETROLEUM ENGINEERS

Cawley, Gillespie & Associates, Inc.

INDEPENDENT REGISTERED 

PUBLIC ACCOUNTING FIRM

Deloitte & Touche LLP

ANNUAL REPORT ON FORM 10-K

Upon request, the Company will 

provide, without charge, copies of the

2012 Annual Report on Form 10-K 

as filed with the Securities and 

Exchange Commission.

ANNUAL MEETING

Tuesday, May 7, 2013

10:00 A.M. (DENVER TIME)

1750 Welton Street

Denver, Colorado 80202

The Grand Hyatt Hotel – Grand Ballroom

STOCK EXCHANGE LISTING

New York Stock Exchange, trading 

symbol: WLL

fp_Text  3/15/13  3:30 PM  Page 1

C O R P O R AT E   O V E RV I E W

Whiting Petroleum Corporation, a Delaware 
corporation, is an independent oil and gas company
that explores for, develops, acquires and produces
crude oil, NGLs and natural gas primarily 
in the Rocky Mountain, Permian Basin, 
Mid-Continent, Michigan and Gulf Coast 
regions of the United States. The Company’s
largest projects are in the Bakken and Three
Forks plays in North Dakota and its Enhanced
Oil Recovery fields in Oklahoma and Texas. The
Company trades publicly under the symbol
WLL on the New York Stock Exchange.
We are focused on increasing 

shareholder value by executing on 
the following:

•  Well managed and fiscally responsible 

development of the Bakken and Three Forks 
hydrocarbon system in the Williston Basin,
where we hold more than 700,000 net acres 
and continue to add to that position.

•  Establishing our Redtail Niobrara play in the 

DJ Basin as a major resource play.

•  Further exploration activities in order to discover

new resource plays.

•  Increasing production and proved reserves from

our North Ward Estes EOR project.

HEADQUARTERS
Denver, Colorado

FIELD OFFICES

WHITING PROPERTIES

The following table summarizes our proved, probable and possible reserves:

Oil
(MMBbl)

NGLs
(MMBbl)

PROVED

PROBABLE

POSSIBLE

301.3

85.0

123.2

40.1

11.9

21.9

3 P   R E S E R V E S ( 1 )

Natural
Gas
(Bcf)

224.3

109.6

156.4

Total
(MMBOE)

378.8

115.2

171.2

%
Oil

80%

74%

72%

Pre-Tax
PV10% Value 
(in MM)

$7,284(2)

$1,262(3)

$1,359(3)

% of
Total

73%

13%

14%

(1) Oil and gas reserve quantities and related discounted future net cash flows have been derived from oil and gas prices calculated using an average of the first-day-of-the month NYMEX
price for each month within the 12 months ended December 31, 2012, pursuant to current SEC and FASB guidelines. The NYMEX prices used were $94.71/Bbl and $2.76/MMBtu.

(2) Pre-tax PV10% of Proved reserves may be considered a non-GAAP financial measure as defined by the SEC and is derived from the standardized measure of discounted future net
cash flows, which is the most directly comparable U.S. GAAP financial measure.  Pre-tax PV10% is computed on the same basis as the standardized measure of discounted future net cash
flows but without deducting future income taxes. As of December 31, 2012, our discounted future income taxes were $1,876.9 million and our standardized measure of after-tax 
discounted future net cash flows was $5,407.0 million. We believe pre-tax PV10% is a useful measure for investors for evaluating the relative monetary significance of our oil and 
natural gas properties. We further believe investors may utilize our pre-tax PV10% as a basis for comparison of the relative size and value of our proved reserves to other companies 
because many factors that are unique to each individual company impact the amount of future income taxes to be paid. Our management uses this measure when assessing the 
potential return on investment related to our oil and gas properties and acquisitions. However, pre-tax PV10% is not a substitute for the standardized measure of discounted future net
cash flows. Our pre-tax PV10% and the standardized measure of discounted future net cash flows do not purport to present the fair value of our proved oil and natural gas reserves.

(3) Pre-tax PV10% of probable or possible reserves represent the present value of estimated future revenues to be generated from the production of probable or possible reserves, 
calculated net of estimated lease operating expenses, production taxes and future development costs, using costs as of the date of estimation without future escalation and using 
12-month average prices, without giving effect to non-property related expenses such as general and administrative expenses, debt service and depreciation, depletion and amortization,
or future income taxes and discounted using an annual discount rate of 10%. With respect to pre-tax PV10% amounts for probable or possible reserves, there do not exist any directly
comparable U.S. GAAP measures, and such amounts do not purport to present the fair value of our probable and possible reserves.

1

 
 
 
fp_Text  3/18/13  5:02 PM  Page 2

F I N A N C I A L   &   O P E R AT I O N S   S U M M A R Y

(IN MILLIONS, EXCEPT PER SHARE, PER UNIT PRICES OR RATIO AMOUNTS)

2012

2011

2010

2009

2008

Income Statement and Cash Flow

Oil and Gas Sales 

Earnings (Loss)

$ 2,137.7

$ 1,860.1

$ 1,475.3

$

917.5

$ 1,316.5

$    414.1

$    491.6

$    336.7

$ (106.9)(1) $    252.1 

Earnings (Loss) per Share (Diluted) 

$      3.48

$      4.14

$      2.55

$ 

(1.18)(1) $

2.97 

Weighted Average Shares Outstanding (Diluted)

119.028

118.668

107.846

100.088

84.894 

Net Cash Provided by Operating Activities 

$ 1,401.2

$ 1,192.1

$    997.3

$    453.8

$    766.5 

Net Cash Used in Investing Activities 

$(1,780.3)

$(1,760.0)

$ (914.6)

$  (523.5)

$(1,138.5)

Net Cash Provided by (used in) Financing Activities $    408.1

$    564.8

$  

(75.7)

$      72.1

$  366.8 

Balance Sheet

Total Assets

Debt 

$ 7,272.4

$ 6,045.6

$ 4,648.8

$ 4,029.5

$ 4,029.1 

$ 1,800.0

$ 1,380.0

$    800.0

$    779.6

$ 1,239.8 

Shareholders’ Equity 

$ 3,453.2

$ 3,029.1

$ 2,531.3

$ 2,270.1

$ 1,808.8 

Debt-to-Capitalization Ratio 

34%

31%

24%

26%

41%

Production and Commodity Prices

Oil Production, MMBbl 

Natural Gas Liquids Production, MMBbl 

Natural Gas Production, Bcf 

Production, MMBOE 

23.1

2.8

25.8

30.2

18.3

2.1

26.4

24.8

17.5

1.5

27.4

23.6

13.9

1.5

29.3

20.3

11.3 

1.1 

30.4 

17.5 

Oil Sales Price, per Bbl Average, Excluding Hedging $    83.86

$    88.61

$    72.61

$    54.80

$ 89.59 

Natural Gas Liquids Price, per Bbl Average 

$    39.36

$    52.38

$    47.33

$    31.07

$    61.06 

Natural Gas Sales Price, per Mcf Average,

Excluding Hedging 

$      3.42

$      4.92

$      4.86

$      3.75

$ 

7.68 

Average Sales Price, per BOE Net of Hedging 

$    69.85

$    73.88

$    61.48

$    45.01

$ 69.06 

Year-End 2012 Well Count and Acreage Statistics 

Total Wells 

Developed Acreage 

Undeveloped Acreage 

GROSS 

10,218 

NET

3,927

1,277,411 

680,338

1,324,667 

883,316

(1) Includes after-tax, non-cash losses on hedging arrangements of $137.5 million or $2.75 per share.

2

fp_Text  3/18/13  5:02 PM  Page 3

Proved Reserves as of December 31,

Oil, MMBbl

NGLs, MMBbl

Natural Gas, Bcf

Reserves, MMBOE

Reserves-to-Production Ratio (Reserves/Annual Production)

2012

301.3

40.1

224.3

378.8

12.6

2011

260.2

37.6

285.0

345.2

13.9

2010

224.2

30.1

303.5

304.9

12.9

2009

193.3

30.5

307.4

275.0

13.6

2008

160.0

20.0

354.8

239.1

13.6

Average Wellhead Oil Price per Bbl in Reserve Report

$  87.15

$  89.18

$  73.14

$  54.84

$ 38.93

Average Wellhead NGLs Price per Bbl in Reserve Report

$  58.15

$  62.93

$  49.35

$  35.44

$ 20.58

Average Wellhead Gas Price per Mcf in Reserve Report

$    3.21

$    4.39

$    4.72

$    3.77

$   4.58

Reserves & Production per Region as of December 31, 2012

378.8 MMBOE

2%

1%

Q4 2012 — 86.1 MBOE/d

3%

2%

13%

33%

51%

9%

13%

73%

(cid:0) ROCKY MOUNTAINS    (cid:0) PERMIAN BASIN    (cid:0) MID-CONTINENT    (cid:0) MICHIGAN    (cid:0) GULF COAST

The following is a summary of Whiting’s changes in quantities of proved oil and gas reserves for the year ended 
December 31, 2012:

Natural
Gas
(MMcf)

284,975

40,915

(13,987)

(25,827)

(61,812)

224,264

Total
(MBOE)

345,249

81,479

(10,611)

(30,209)

(7,148)

378,760

Balance – December 31, 2011

Extensions and discoveries

Sales of minerals in place

Production

Revisions to previous estimates

Balance – December 31, 2012

Oil
(MBbl)

260,144

68,134

(7,960)

(23,139)

4,106

301,285

NGLs
(MBbl)

37,609

6,526

(320)

(2,766)

(951)

40,098

3

fp_Text  3/18/13  5:02 PM  Page 4

D E A R   F E L L O W   S H A R E H O L D E R S

gross (175 net) operated wells planned for 2013 and
have substantially added to our drilling inventory
through new discoveries and an active leasing 
program. Based on independent engineering and 
internal estimates, we project that we have a total 
of 9,661 gross (4,503.2 net) potential future 
drilling locations.  

We will continue to focus on oil and natural gas
liquids in the foreseeable future. Currently, crude oil
trades at more than 25 times the price of natural gas,
which compares to their 6 to 1 heating equivalency
ratio. At year-end 2012, 80% of our proved reserves
and 77% of our production consisted of crude oil.
We expect that percentage to continue to increase
over the next several years. In the September 3, 2012
edition of the Oil & Gas Journal, we ranked 14th in
the world in terms of liquids proved reserves and
14th in the world in terms of liquids production for
public companies.

We believe we have some of the best geoscientists
in the oil and gas industry. This belief is evidenced by
discoveries and subsequent reserves and production
growth at our Sanish field and our Pronghorn and
Hidden Bench/Tarpon prospects. We are providing
our staff with the best tools available to enable their
continued success.

We also believe that we have garnered some of
the best young talent available in the industry. We
have been very active recruiting from colleges in
North Dakota, South Dakota, Montana, Texas and
Colorado. As we build for the future, more than 70%
of our new-hires in 2012 were 40 years old and under.
The average age of a Whiting employee has dropped
from 48 to 44 years old over the past two years.  

All of us at Whiting are enthusiastic about our
prospects for growing long-term shareholder value.
On behalf of the Whiting Petroleum Corporation
Board of Directors and all of our dedicated employees,
thank you very much for your continuing interest in
Whiting Petroleum Corporation.

2012 was a record year for Whiting Petroleum,
and we are off to a great start in 2013. The develop-
ment of the fields we discovered in 2011 such as
Pronghorn, Hidden Bench, Tarpon and Redtail 
generated excellent results in 2012. In the wake of
this development, we posted records in production,
proved reserves and discretionary cash flow. Accord-
ing to the December 2012 Oil and Gas Production
Report published by the North Dakota State Industrial
Commission, Department of Minerals, Oil and Gas
Division, Whiting was the number one oil producer
in North Dakota at 66,155.7 barrels per day in 
December 2012.

We believe the following factors will lead to a
strong year in 2013 for Whiting and our shareholders:

(cid:0)• Optimization programs that should lead to efficient,

low-cost drilling and completion operations;

(cid:0)•

(cid:0)•

(cid:0)•

Infill/higher density pilot projects at Sanish, 
Pronghorn and Hidden Bench;

Sincerely,

Solid cash flow and balance sheet;

Strong Bakken oil prices as differentials improve; and

(cid:0)• The emergence of our Redtail prospect as a major 

resource play.

JAMES J. VOLKER
Chairman of the Board and Chief Executive Officer

We expect a very good year for organic growth

in reserves and production in 2013. We have 256

February 28, 2013

4

fp_Text  3/18/13  5:02 PM  Page 5

fp_Text  3/18/13  5:02 PM  Page 6

D R I L L I N G   A N D   O P E R AT I O N S   O V E RV I E W

The table below summarizes Whiting’s drilling activity
and exploration and development costs incurred for
the fourth quarter and the twelve months ended 
December 31, 2012:

Gross/Net Wells Completed

PRODUCING PRODUCING

NON-

TOTAL NEW
DRILLING

% SUCCESS
RATE

CAPEX
(IN MM)

Q4 12

124/63.0

4/3.9

128/66.9

96.9%/94.2% $ 574.1 

Pictured above is our Big Tex prospect, located primarily in Pecos
County, Texas. We have established production on three corners of
our acreage block and have experienced some encouraging results.
In January 2013, we completed the May 2502H horizontal well
flowing 674 barrels of oil per day from the Wolfcamp formation.
The well’s peak 30-day average was 397 barrels of oil per day.

12M 12 392/188.2 

5/4.7 

397/192.9

98.7%/97.6% $2,111.5

oil, 10% natural gas liquids and 10% natural gas.

PRODUCTION

Production in 2012 totaled a record 30.21 MMBOE

or 82,540 BOE per day. This represents a 22% increase
over total production of 24.78 MMBOE or 67,890 BOE
per day in 2011. Adding back the 4,500 BOE per day of
production that was conveyed to Whiting USA Trust II
in March 2012, our production in 2012 would have
been up 28% over 2011.

PROVED RESERVES

As of December 31, 2012, we had estimated proved 
reserves of 378.8 MMBOE, of which 64% were classified
as proved developed.  These estimated proved reserves
had a pre-tax PV10% value of $7,283.9 million, of
which approximately 99% came from properties located
in Whiting’s Rocky Mountain, Permian Basin and 
Mid-Continent core areas. Our reserves are 80% crude

Our proved reserves of 378.8 MMBOE represented a
10% increase over the 345.2 MMBOE of proved reserves
at year-end 2011, which equates to 246% reserve 
replacement. Adding back the 10.6 MMBOE that was
conveyed to Whiting USA Trust II, our proved reserves
were up 13%. An estimated 81.5 MMBOE of proved 
reserves were added through exploration and develop-
ment activities. This represents a 68% increase over the
48.6 MMBOE of proved reserves that were added from
exploration and development in 2011.  

Most of the proved reserve additions during 2012

came from our Bakken and Three Forks development in
the Williston Basin of North Dakota and Montana. We
booked an estimated 66.4 MMBOE of new Bakken and
Three Forks proved reserves, bringing our total proved
reserves in the Northern Rockies to 165.1 MMBOE 
at year-end 2012. Of this 165.1 MMBOE, 67% were
proved developed and 33% were proved undeveloped.

6

fp_Text  3/18/13  5:02 PM  Page 7

PROBABLE AND POSSIBLE RESERVES

2013 CAPITAL BUDGET

At year-end 2012, our probable reserves were 

estimated to be 115.2 MMBOE and our possible 
reserves were estimated to be 171.2 MMBOE, for a total
of 286.3 MMBOE. The year-end 2012 estimated pre-tax
PV10% for our probable and possible reserves was
$2,621.4 million.  

As with our proved reserves, 100% of Whiting’s
probable and possible reserve estimates were independ-
ently engineered by Cawley, Gillespie & Associates, Inc.
Please refer to “Reserve and Resource Information” on
the inside front cover of this annual report.

POTENTIAL FUTURE DRILLING LOCATIONS

Based on independent engineering and internal 
estimates, we project that we have a total of 9,661 gross
(4,503.2 net) potential future drilling locations. These
consist of 7,556 gross (3,623.3 net) primary locations
identified in our reserve database and 2,105 gross
(879.9 net) prospective locations supported by success-
ful exploration drilling or extensive geoscience. Of
these gross locations, 50% are located in our Williston
Basin Bakken/Three Forks plays and 25% are located in
our Redtail Niobrara play.

Identified Primary Locations
Northern Rockies

Southern Williston (Lewis & Clark; Pronghorn)
Western Williston(1) (Cassandra; Hidden Bench; Tarpon; Missouri Breaks)
Sanish (Sanish; Parshall) (2)
Other (3)

Total
Central Rockies

Redtail Niobrara
Other (4)

Total

Gulf Coast
Mid-Continent
Permian Basin (5)
Michigan
Total Primary Inventory

Identified Prospective Locations
Williston Basin 

Williston Basin New Objectives

Missouri Breaks Upper Three Forks
Hidden Bench Lower Bakken Silt / Higher Density Pilot
Cassandra Lower Three Forks
Tarpon Lower Three Forks

Total

Williston Basin Higher Density Locations

Pronghorn Sand Higher Density
Sanish Higher Density and Infill

Total

Williston Basin Total Prospective Locations
Permian Basin

Big Tex Horizontal

Total Prospective Inventory
Total Potential Locations (6)

Our 2013 capital budget is $2,200 million, which

we expect to fund substantially with net cash provided
by our operating activities, borrowings under our credit
facility and certain oil and gas property divestitures. 
We expect to invest $1,914 million of the 2013 capital
budget in exploration and development activity, $108
million for land and $178 million for facilities. Based
on this level of capital spending, we forecast production
of 33.8 MMBOE — 35.0 MMBOE for 2013, an increase of
12% - 16% over our 2012 production of 30.2 MMBOE.

In 2013, we plan to invest $1,142 million for the

drilling and completion of 219 gross (148 net) wells in
the Williston Basin. This represents 60% of our total
planned exploration and development expenditures of
$1,914 million. We have initiated pad drilling at our
Sanish field, Lewis & Clark/Pronghorn prospects and
Hidden Bench/Tarpon prospects. We expect to drill two
or three wells off of each pad. We currently estimate
that we can save approximately $500,000 per well 
in the Pronghorn field and $175,000 per well in the 
Sanish field in mobilization costs and efficiencies 
utilizing pad drilling.

GROSS

NET

WELLS PER SPACING UNIT

3 Pronghorn Sand / 1280
4 Middle BKN; 3 Upper TFK / 1280
3.5 Middle BKN; 3 Upper TFK / 1280

8 Nio “B”; 4 Nio “A” / 640 –960 

1,104
1,174
260
588
3,126

2,420
958
3,378
131
41
817
63
7,556

410.2
380.5
118.1
340.3
1,249.1

1,215.7
654.1
1,869.8
98.1
33.7
319.3
53.3
3,623.3

GROSS

NET

WELLS PER SPACING UNIT

321
556
120
40
1,037

453
191
644
1,681

424
2,105
9,661

102.8
161.9
40.0
15.0
319.7

167.3
175.9
343.2
662.9

217.0
879.9
4,503.2

3 Upper TFK / 1280 
4 BKN Silt; 4 Middle BKN per 1280 
4 Lower TFK per 1280 
3 Lower TFK per 1280 

3 Add'l Pronghorn Sand / 1280 
3 Add'l Middle BKN / 1280 

6 Upper Wolfcamp / 640 

(1) Tarpon primary development on 3 Middle Bakken; 2 Upper Three Forks due to high natural fracturing. Excludes Upper Three Forks at Missouri Breaks.
(2) Cross unit boundary wells at Sanish result in an average of 3.5 wells per spacing unit. Parshall was developed on 640-acre spacing units and there is no Three Forks.
(3) Various fields in North Dakota and Montana, including Big Island, Starbuck, Big Stick and others.
(4) Various fields in Colorado, Wyoming and Utah including Sulphur Creek, Fontenelle, Nitchie Gulch, Flat Rock and others.
(5) Various fields in Texas and New Mexico including Jo-Mill, West Jo-Mill, Garza, Signal Peak and others.
(6) Locations include both 3P reserves and Resource Potential.

7

fp_Text  3/19/13  1:31 PM  Page 8

W I L L I S T O N   B A S I N   O I L   P L AY S

WILLISTON BASIN In the Bakken and Three
Forks hydrocarbon system in the Williston Basin
alone, we hold more than 700,000 net acres and
continue to add to that position. Importantly, our
average cost in this acreage is $521 per net acre.
With a focus on Bakken/Three Forks oil in the
Williston Basin, we generated record production of
30.21 MMBOE or 82,540 BOE per day in 2012.  

We were one of the first successful operators in
the Bakken/Three Forks Hydrocarbon System in the
Williston Basin with the discovery of our Sanish
field in early 2007. Outside of our Sanish field, we
have assembled lease positions on seven separate
prospects in the Williston Basin targeting the Bakken/
Three Forks and Pronghorn Sand formations. Our
focus in 2012 was on the development of the fields
we discovered in 2011, such as our Pronghorn and 
Hidden Bench/Tarpon prospects.

The following graphic depicts our drilling plans

across our major Williston Basin fields: 

SOUTHERN WILLISTON BASIN The Southern
Williston Basin encompasses our Lewis & Clark
and Pronghorn prospects, which represent a total of
398,334 gross (262,974 net) acres. Fourth quarter
2012 production from this region averaged 13,430
BOE per day. This daily rate represents a 129%
increase over the 5,870 BOE per day rate in the
fourth quarter of 2011.

Lewis & Clark/Pronghorn — We were very 
pleased with our drilling results at the Lewis &
Clark/Pronghorn prospects in 2012. The Lewis 
& Clark/Pronghorn prospects are located primarily
in North Dakota’s Stark and Billings counties and run
along the Bakken shale pinch-out in the southern
Williston Basin. In this area, the Upper Bakken shale
is thermally mature, moderately over-pressured, 
and it has charged reservoir zones within the 
immediately underlying Pronghorn Sand and Three 
Forks formations.

MISSOURI BREAKS

CASSANDRA

SANISH

HIDDEN BENCH

PRONGHORN

TARPON

Lower Virden

U. Bakken Shale

Middle Bakken

L. Bakken Shale
Upr 3Fks–1st Bench

Upr 3Fks–2nd Bench

Lower Virden
U. Bakken Shale

Middle Bakken

L. Bakken Shale

L. Bakken Silt
Pronghorn Sand

Upr 3Fks–1st Bench

Upr 3Fks–2nd Bench

EXISTING 4P LOCATIONS 

POTENTIAL HIGH DENSITY INFILLS 

NEW OBJECTIVES

8

0’

50’

100’

150’

200’

0’

50’

100’

150’

200’

fp_Text  3/18/13  5:02 PM  Page 9

Pictured above is the Obrigewitch 11-17TFH, which was completed
in the Pronghorn Sand flowing 1,740 BOE per day. The well is 
located on our Pronghorn prospect in Stark County, North Dakota.

The rig in the background in the picture below is drilling the 
Buckman 34-9PH, which was completed flowing 1,964 BOE 
per day. The wellhead in the foreground is the Obrigewitch 
21-16 TFH, which flowed 3,373 BOE per day on completion in the
Pronghorn Sand. Both wells were drilled on our Pronghorn prospect.

We intend to conduct a higher density pilot 

program at Pronghorn. Our plan is to drill six 
Pronghorn Sand wells per 1,280-acre spacing unit,
which is up from our initial plan of three wells per
spacing unit. We currently have seven drilling rigs
operating in the Pronghorn prospect and have
begun utilizing pad drilling with two or three wells
being drilled from each pad.

In order to process the produced gas stream from

the Lewis & Clark/Pronghorn areas, we constructed
and brought on-line the Belfield gas processing
plant, located south of Belfield, North Dakota. The
gas plant has a processing capacity of 30 MMcf per
day and processes production from the Pronghorn
area. Currently, there is inlet compression in place to
process 24 MMcf per day. Additionally, we completed
construction on an oil terminal and a seven-mile 
oil transmission line to allow for the delivery of oil 
production from the Pronghorn area into the
Bridger Four Bears oil transmission system, which
came on stream in March 2013. The use of this 
terminal reduces our transportation costs per barrel
and makes development more economical.

9

fp_Text  3/18/13  5:02 PM  Page 10

fp_Text  3/18/13  5:02 PM  Page 11

WESTERN WILLISTON BASIN
The Western Williston Basin includes our Hidden
Bench, Tarpon, Missouri Breaks and Cassandra
prospects. These areas represent a total of 183,508
gross (114,732 net) acres. Production from the 
Western Williston Basin averaged 5,120 BOE per day
in the fourth quarter of 2012, which represents a
155% increase over the 2,010 BOE per day average
rate in the fourth quarter of 2011.

Hidden Bench/Tarpon — Drilling on the Hidden
Bench and Tarpon prospects, which encompass 
approximately 49,108 gross (28,556 net) acres and
8,125 gross (6,265 net) acres, respectively, target the
Bakken and Three Forks formations. Based on core
analysis, we have identified an additional reservoir
positioned between the Middle Bakken and Three
Forks that has demonstrated high oil in place and
may significantly increase reserves at our Hidden
Bench area. We plan to test this zone, which we
refer to as the “Middle Bakken Silt,” by drilling 160-
acre spaced wells above and below this target zone
and stimulating these wells with large frac volumes.
We believe that this higher density drilling will also

On page #10 is our Belfield Gas Plant, located in Stark County,
North Dakota. The Belfield plant was processing 18 MMcf of gas
per day (gross) as of December 31, 2012. Currently, there is inlet
compression in place to process 24 MMcf per day. Whiting owns
50% of the Belfield plant. We began connecting other operators’
wells to the plant in November 2012.

Pictured below is the Estvold 42-26TFH at our Sanish field. Net
production from Sanish in 2012 totaled 11.4 MMBOE (an average
of 31,081 BOE per day), representing a 40% increase over 2011.

improve our recovery efficiency in the Middle Bakken
reservoir. We plan to drill as many as eight wells per
1,280-acre spacing unit at Hidden Bench, up from
our initial plan of four wells per unit.

In the fourth quarter of 2012, we drilled another

prolific well at our Tarpon prospect in McKenzie
County, North Dakota. The Tarpon Federal 21-4-3H
was tested on December 28, 2012 flowing 4,971 
barrels of oil and 11,450 Mcf of gas (6,879 BOE) per
day from the Middle Bakken formation. This is the
third best well drilled to date in the Williston Basin,
the first being Whiting’s Tarpon Federal 21-4H with
an initial production rate of 7,009 BOE per day. We
hold a 56% working interest and a 45% net revenue
interest in the Tarpon Federal 21-4-3H. We have 
implemented pad drilling at Tarpon with plans to
drill three wells off of each pad.  

Missouri Breaks Prospect — We hold 95,928
gross (66,095 net) acres in the Missouri Breaks
prospect, located in Richland County, Montana and
McKenzie County, North Dakota. We continue to
de-risk our acreage in the Missouri Breaks area. We
have now drilled successful wells on the western,
eastern and southern portions of our acreage. On
October 27, 2012, we completed the Amber Elizabeth
9-4H in the Middle Bakken formation flowing 1,315
BOE per day. This was our first well drilled in the
eastern portion of Missouri Breaks. 

SANISH FIELD AREA
Whiting’s net production from the Sanish field 
averaged 32,590 BOE per day in the fourth quarter of
2012, an increase of 4% over the third quarter 2012
average of 31,400 BOE per day. Net production from
Sanish in 2012 totaled 11.4 MMBOE (an average of
31,081 BOE per day), representing a 40% increase
over 2011. Whiting continues to generate strong 
results from the field.

We plan to initiate a higher density pilot 
program in the Sanish field in the first half of 2013.
This could add 191 gross (175.9 net) locations. We
also plan to refrac several wells at Sanish in 2013.

11

fp_Text  3/18/13  5:02 PM  Page 12

O T H E R   D E V E L O P M E N T   A R E A S

DENVER BASIN
Redtail Niobrara Prospect — We hold a total 
of 109,856 gross (79,467 net) acres in our Redtail
prospect, located in the Denver Julesberg Basin in
Weld County, Colorado. Based on our drilling 
success in 2012, we have submitted a plan to the
Colorado Oil & Gas Division to drill up to 8 wells in
the Niobrara “B” formation and 4 wells in the “A”
zone per 640 or 960 acre spacing units.  

We plan to construct a new gas processing plant
at our Redtail prospect. Construction is expected to
be completed in early 2014. The plant’s planned inlet
capacity is 15 MMcf of gas per day. We currently
have one drilling rig running at Redtail. We plan to
add a second rig around mid-year and a third rig 
once the plant is completed.

DELAWARE BASIN
Big Tex Prospect — Whiting’s lease position at Big
Tex consists of 116,694 gross (86,882 net) acres, 
located primarily in Pecos County, Texas. We have
established production on three corners of our
acreage block at Big Tex and recently drilled our best
well in the play to date. On January 23, 2013, we
completed the May 2502H flowing 674 barrels of oil
per day from the Wolfcamp formation. The horizontal
well’s peak 30-day average was 397 barrels of oil per
day. Whiting owns a 100% working interest and an
80% net revenue interest in the May 2502H.

12

fp_Text  3/18/13  5:02 PM  Page 13

EOR PROJECTS
Our EOR projects at North Ward Estes and Postle
fields represented 38% of our year-end 2012 proved
reserves and 19% of our company-wide production
in the fourth quarter of 2012.

North Ward Estes Field — The North Ward Estes
field includes six base leases with 100% working 
interests in 62,138 gross (60,377 net) acres in Ward
and Winkler counties, Texas. Current EOR production
is from the Yates formation at 2,600 feet, which is

the primary producing zone, with additional 
production from other zones including the Queen 
at 3,000 feet.

Net production from our North Ward Estes field
averaged 8,540 BOE per day in the fourth quarter of
2012. One of the largest phases at North Ward Estes
(Phase 3B) is pressuring up with CO2, and we are 
beginning to see a production response. Current
production from the field is approximately 9,000 BOE
per day. Whiting is currently injecting approximately
350 MMcf of CO2 per day into the field, of which
about 63% is recycled gas.  

Pictured at the top of page #12 is the Wildhorse 02-0214H well at
our Redtail prospect in the Denver Basin in Weld County, Colorado.
This well flowed 660 BOE per day from the Niobrara “B” formation
in October 2012. The well was drilled on a 640-acre spacing unit.

Pictured below on page #12 is the Legear 11-02 well at our 
Big Tex prospect in Pecos County, Texas. This horizontal well was
completed in the Wolfcamp formation in July 2012 flowing 
478 BOE per day.

In the photo above, Lease Operator Scott Forbess collects data
from our Nitrogen Rejection Unit at North Ward Estes field in
Ward County, Texas.

Postle Field — The Postle field, located in Texas
County, Oklahoma, includes five producing units
and one producing lease covering a total of approxi-
mately 26,442 gross (26,135 net) acres. Four of the
units are currently active CO2 enhanced recovery
projects. In the fourth quarter of 2012, production
from the field averaged 7,820 BOE per day, which
represents a slight decrease from 8,050 BOE per day
in the fourth quarter of 2011. Currently, we are 
injecting approximately 120 MMcf per day of CO2
in this field, over half of which is recycled gas.

13

fp_Text  3/18/13  5:02 PM  Page 14

O P T I M I Z AT I O N   P R O G R A M S

Over the past three and a half years, our use of
the “Drill Well on Paper” (“DWOP”) optimization
process to perform step-by-step analysis of the
drilling programs in the Bakken and Three Forks 
formations in North Dakota has allowed us to 
reduce average drill times from 38 days to 18.5 days
per well in the Sanish field and from 35 days to 
17.0 days per well in other fields throughout 
North Dakota.  

As post-DWOP drill times in North Dakota have
stabilized at these reduced rates, drilling procedures
are being modified to utilize pad drilling technologies
to further reduce drilling time and costs per well. Pad
drilling is a batch drilling methodology utilized to
reduce surface disturbance, rig mobilization, and
service costs by drilling two or three wells from a
single drilling location. Drilling costs for pad wells
have been over $175,000 lower in the Sanish field

and more than $500,000 lower in the Pronghorn
field than single well locations in the same fields.
Whiting currently has 10 pad capable rigs drilling in
North Dakota.

In September 2012, we initiated a program to 
reduce our overall cycle time, or the time from spud
to first production. This program initially covered
operations in our Pronghorn, Lewis & Clark, Hidden
Bench, Tarpon and East Missouri Breaks fields. 
The focus of the program is on: the construction of
pads and tank batteries; drilling rig mobilization
times; pre-job preparation; timing for fracture
stimulations; post-frac flow back and construction 
of production facilities.

To date, we have reduced this cycle time by 23.7

days, to 67.1 days from 90.8 days. The cycle time 
reduction is resulting in accelerated production and
drilling and completion cost savings.

fp_Text  3/18/13  5:02 PM  Page 15

Depicted on page #14 is an example of multi-well development 
in the Williston Basin. The five wells at our Sanish field in this
photo had average initial production rates of more than 2,250
BOE per day. They were completed in both the Middle Bakken and
Three Forks formations.

Pictured above is the Lydia 11-14PH, which was completed in the
Pronghorn Sand in September 2012 flowing 1,154 BOE per day.
The well was drilled on our Pronghorn prospect in Stark County,
North Dakota.

Lease Operator Will Goldsbury is pictured below checking the tank
batteries at the Johnson 34-33H well at our Hidden Bench prospect
in McKenzie County, North Dakota. The well was completed in the
Middle Bakken formation flowing 2,213 BOE per day.

15

fp_Text  3/18/13  5:02 PM  Page 16

B U I L D I N G   F O R   T H E   F U T U R E

We are very pleased with the young talent we have
been able to attract to be part of the Whiting team.
Our Northern Initiative Program focuses on recruit-
ing some of the most promising young professionals
from highly regarded universities in the states where
we operate. The following pages feature some of
Whiting’s up-and-comers.

JONATHAN COLE WATERFIELD-ORLEY

Jonathan Cole Waterfield-Orley joined Whiting in
July 2008 as a member of our Drilling Department.
Prior to joining Whiting, he worked for a drilling
contractor for four years as a floorhand, driller,
toolpusher and drilling manager in the Green
River Basin of Wyoming, Uintah Basin of Utah,
and Piceance Basin and Denver Julesburg Basin of 
Colorado. At Whiting, Cole has advanced to the 
position of Regional Drilling Manager after serving
as a Drilling Engineer where his duties include 
overseeing all aspects of daily drilling operations in
a safe and efficient manner. His accomplishments
at Whiting include developing drilling practices to
reduce costs and days on location in several of 
Whiting’s prospects, including the Sanish, Pronghorn,
Hidden Bench and Lewis & Clark prospects in North
Dakota, the Postle field in Oklahoma, the Big Tex
prospect in Texas and the Redtail Niobrara prospect
in Colorado. Cole has a B.S. degree in Petroleum 
Engineering from the University of Montana.

JESSICA JEAN BENSON

Jessica Jean Benson joined Whiting in May 2011 
as a member of our Land Department. At Whiting,
Jessica has advanced to the position of Landman II
after serving as both a Land Coordinator and 
Landman I. Jessica works closely with the asset team
she serves on in the management of Bakken / Three
Forks resource plays in both North Dakota and 
Montana. She is largely responsible for negotiating
acquisitions, high-grade consolidation trades and
partner buy-outs. She spearheaded negotiations for
more than 13,300 net acres in the Missouri Breaks
Prospect, increasing Whiting’s working interest in 
10 operated units and adding an additional seven 
operated units to the drilling program. In conjunction
with strengthening Whiting’s leasehold position,
Jessica is responsible for testifying in oil and gas 
hearings for temporary spacing, field-wide spacing,
compulsory pooling and increased density authority
before both the Montana Board of Oil & Gas 
Conservation and the North Dakota Industrial 
Commission. Jessica has a B.S. degree in Agricultural
and Natural Resource Economics from Colorado
State University, a B.A. in Professional Land and
Resource Management from Western State Colorado
University, and is working on a Master of Science
degree in Global Energy Management at the 
University of Colorado – Denver. She is a certified
paralegal through the University of Colorado – Denver
and is a Registered Professional Landman through
the American Association of Professional Landmen.

16

fp_Text  3/18/13  5:02 PM  Page 17

MARSHALL JUNG

BRANDON ROLLINS

Marshall Jung joined Whiting in May 2011 as a
member of the Geo-services group. Prior to joining
Whiting, he worked for a service company for six
years as a wireline engineer and Petrophysicist in
various worldwide locations, where he published
Society of Petroleum Engineers (SPE) papers and 
assisted in design of new wireline logging technolo-
gies. At Whiting, Marshall works as a Petrophysicist
where his duties include exploration and develop-
ment petrophysics. He is responsible for planning,
advising and evaluating petrophysical studies on a
field-wide basis for Whiting assets. His work is used
for reserves calculations and development decisions.
His accomplishments include successful evaluations
in Whiting’s Permian Basin, Niobrara and Red River
fields. Marshall holds degrees in Mathematics and
Economics from the Colorado School of Mines. 

Brandon Rollins joined Whiting in March 2011 as a
member of our Northern Rockies Operations Team.
Prior to joining Whiting, he attended the University
of Montana where he received his B.S. degree in 
Petroleum Engineering. At Whiting, Brandon has
advanced to the position of Operations Engineer
after serving as a Production Engineer in Dickinson,
North Dakota, where his duties included production
optimization in our sliding ball and sleeve completion
technology, water-flood optimization and completion-
rig coordination/procedures. His accomplishments 
at Whiting include Missouri Breaks/East Missouri
Breaks field development, completions optimization,
North Elkhorn Ranch Unit and Big Stick Madison
Unit waterflood optimization and Pronghorn field
production development.

17

fp_Text  3/18/13  5:02 PM  Page 18

SIRIKKA LOHOEFENER

BENJAMIN BETTS

Sirikka Lohoefener joined Whiting in June 2006 as 
a member of our Financial Reporting Department.
Prior to joining Whiting, she worked for five years
in public accounting as an auditor. At Whiting,
Sirikka was promoted to the position of Financial
Reporting Manager in 2011, where her duties 
include internal financial reporting, SEC reporting
and FERC reporting. Her accomplishments at 
Whiting include participating in the launch of two
royalty trust IPO’s and assisting with several of
Whiting’s debt and equity offerings.  Sirikka has a
B.S. degree and a Master of Accountancy degree
from the University of Missouri – Columbia and is a
Certified Public Accountant.

Benjamin Betts joined Whiting in May 2007 as 
a member of our North Ward Estes Operations 
Department. At Whiting, Benjamin has advanced to
the position of Drilling Engineer after serving as 
Operations Engineer where his duties include the
planning and the safe, efficient implementation of a
well for the desired completion. His accomplishments
at Whiting include overseeing the drilling of a total of
78 wells as part of the Whiting Drilling Department
in Colorado, Montana, North Dakota, Utah and Texas.
Benjamin holds a B.S. degree in Petroleum Engineering
from the Colorado School of Mines and is a registered
Professional Engineer in the State of Colorado.

18

fp_Text  3/18/13  5:02 PM  Page 19

JOSHUA BRNAK

TAYLOR WINEGAR 

Joshua Brnak joined Whiting in June 2006 as a
member of our North Ward Estes reservoir engineer-
ing group.  Prior to joining Whiting, he worked for
four years as a field operations engineer at the
SACROC Unit in the Permian Basin of West Texas.
He co-authored an SPE technical paper, presented at
the Improved Oil Recovery conference in Oklahoma,
and has had his SPE paper published in several 
industry magazines. At Whiting, Josh’s duties include
CO2 flood management, project development and
reservoir surveillance. His accomplishments at Whiting
include a CO2 flood reservoir simulation, design and
initiation of the North Ward Estes CO2 flood pilot
project, development of several in-house databases
and justification and approval of several CO2 and
waterflood projects at North Ward Estes. Josh has a
B.S. degree in Petroleum Engineering from the 
Colorado School of Mines.

Taylor Winegar joined Whiting in April 2010 as a
member of our Drilling Department. Prior to joining
Whiting, he worked for three years as a Drilling 
Engineer on various drilling programs in the Piceance
and Uintah Basins. At Whiting, Taylor has advanced
to the position of Level III Drilling Engineer where
his duties include providing drilling engineering
support while managing the daily operations of four
rigs in the Pronghorn, Missouri Breaks and Big Island
prospects that Whiting is currently developing. His
accomplishments at Whiting include reduced drilling
cycle times through the testing and implementation
of Lateral Drilling Reamers, saving an average of
three days of rig time per well. One of Taylor’s rigs,
Pioneer 3, recently set a Williston Basin record
drilling the Tomchuk 11-30PH to a total measured
depth of 20,620 feet in 10.9 days from spud to total
depth. He also introduced Electromagnetic MWD
technology in the vertical and curve sections of 
horizontal Bakken, Three Forks and Pronghorn Sand
wells, generating further reduced spud-to-TD times.
Taylor has a B.S. degree in Petroleum Engineering
from the University of Montana.

19

fp_Text  3/18/13  5:02 PM  Page 20

B O A R D   O F   D I R E C T O R S

JAMES J. VOLKER, 66, is Chairman of
the Board and Chief Executive Officer of
Whiting Petroleum Corporation. Mr. Volker
has been a director of Whiting Petroleum
Corporation since 2003 and a director of
Whiting Oil and Gas Corporation since
2002.  He  joined  Whiting  Oil  and  Gas 
Corporation in August 1983 as Vice Pres-
ident  of  Corporate  Development  and
served in that position through April 1993.
In May 1993, he became a contract con-
sultant to Whiting Oil and Gas Corporation and served in that
capacity until August 2000, at which time he became Executive
Vice President and Chief Operating Officer. Mr. Volker was 
appointed President and Chief Executive Officer and a director
of Whiting Oil and Gas Corporation in January 2002. Mr. Volker
retained his position of Chief Executive Officer when Mr. James
T. Brown was appointed President and Chief Operating Officer
effective January 1, 2011. Mr. Volker was co-founder, Vice Pres-
ident and later President of Energy Management Corporation
from 1971 through 1982. He has over 40 years of experience in
the oil and natural gas industry. Mr. Volker has a degree in finance
from the University of Denver, an MBA from the University of
Colorado and has completed H. K. VanPoolen and Associates
course of study in reservoir engineering.

THOMAS  L.  ALLER,  64,  has  been  a 
director of Whiting Petroleum Corporation
since 2003. Mr. Aller, who serves as Senior
Vice President of Operations Support 
for Alliant Energy Corporation effective 
January 13, 2013, has served as Senior
Vice President —Energy Resource Develop-
ment of Alliant Energy Corporation since
January 2009 and President of Interstate
Power and Light Company since 2004. Prior
to that, he served as President of Alliant
Energy Investments, Inc. since 1998 and interim Executive Vice
President — Energy Delivery of Alliant Energy Corporation since
2003 and Senior Vice President — Energy Delivery of Alliant Energy
Corporation since 2004. From 1993 to 1998, he served as Vice
President of IES Investments. He received his Bachelor’s Degree
in political science from Creighton University and his Master’s
Degree in municipal administration from the University of Iowa.

D. SHERWIN ARTUS, 75, has been a
director of Whiting Petroleum Corporation
since 2006. Mr. Artus joined Whiting Oil
and Gas Corporation in January 1989 as
Vice President of Operations and became
Executive Vice President and Chief Operat-
ing Officer in July 1999. In January 2000,
he was appointed President and Chief 
Executive Officer. Mr. Artus became Senior
Vice President in January 2002 and retired
from the Company on April 1, 2006. Prior
to joining Whiting, he was employed by Shell Oil Company in
various engineering research and management positions. From
1974-1977, he was employed by Wainoco Oil and Gas Company
as Production Manager. He was a co-founder and later became
President of Solar Petroleum Corporation, an independent oil
and gas producing company. He has over 51 years of experience
in the oil and natural gas business. Mr. Artus holds a Bachelor’s 
Degree in Geological Engineering and a Master’s Degree in Mining
Engineering from the South Dakota School of Mines and Tech-
nology. He is a registered Professional Engineer in Colorado,
Wyoming, Montana and North Dakota. Mr. Artus is a member,
and a past officer, of the Society of Professional Well Log Analysts
and is a member of the Society of Petroleum Engineers.

THOMAS  P.  BRIGGS, 64, has been a
director of Whiting Petroleum Corporation
since 2006 and is chairman of the Com-
pensation Committee. Mr. Briggs is an 
inactive certified public accountant and
served  as  chief  financial  officer  of  six 
private and public companies, primarily
in the oil and gas and food industries. 
Recently, he was chief financial officer 
of Healthy Food Holdings, Inc., a private
holding and management company for
branded food companies. Prior to that, he served as chief 
financial officer of Horizon Organic, a publicly-held organic
foods company. During the 1980s, he was a chief financial 
officer and senior officer of two Denver-based independent oil
and gas companies. Mr. Briggs spent 10 years with PriceWater-
houseCoopers and Deloitte as a tax and M&A consultant to oil
and  gas  clients.  Mr.  Briggs  holds  an  accounting  degree  from
Duke University and a law degree from Georgetown University.
Mr. Briggs’ term expires at the 2013 annual meeting.

PHILIP E. DOTY, 69, has been a director
of Whiting Petroleum Corporation since
2010  and  is  chairman  of  the  Audit 
Committee. Mr. Doty is a certified public
accountant.  Since  2007,  Mr.  Doty  has
been counsel to Ehrhardt Keefe Steiner &
Hottman PC, the largest Colorado-based
accounting and consulting firm, where he
previously was a partner from 2002 to
2007. From 1967 to 2000 he worked at
Arthur Andersen and Co., where he was a
partner since 1978 and served as the audit partner and head of
the Denver office oil and gas practice until his retirement in
2000. He is a graduate of Drake University with a Bachelor’s 
degree in accounting.

WILLIAM N. HAHNE, 61, has been a
director since 2007 and is chairman of the
Nominating and Governance Committee.
Mr. Hahne was Chief Operating Officer 
of Petrohawk Energy Corporation from
July 2006 until October 2007. Mr. Hahne
served at KCS Energy, Inc. as President,
Chief Operating Officer and Director from
April 2003 to July 2006, as Executive Vice
President and Chief Operating Officer
from March 2002 to April 2003 and in
other management positions prior to that. He is a graduate of
Oklahoma University with a BS in petroleum engineering and
has 38 years of extensive technical and management experience
with independent oil and gas companies including Unocal, Union
Texas Petroleum Corporation, NERCO, The Louisiana Land and
Exploration Company (LL&E) and Burlington Resources, Inc.

ALLAN  R.  LARSON, 75, has been a
director of Whiting Petroleum Corporation
since 2011. He has more than 47 years 
experience in oil and gas exploration and
development,  primarily  in  the  Rocky
Mountains and the Midcontinent regions.
For  26  years  he  has  operated  Larson 
Petroleum, LLC, a geological consulting
company. His previous affiliations include
Jade Drilling Company, Belleview Capital
Corporation, Mesa Petroleum Company
and Amoco Production Company. Mr. Larson earned a PhD in
Geology at the University of California, Los Angeles. He earned
his M.S. in Geology from UCLA and his BS degree in Geology at
Pennsylvania State University. He is a member of the American
Association of Petroleum Geologists, the Rocky Mountain Asso-
ciation of Geologists, the Wyoming Geological Association, the
Montana Geologic Society and the Utah Geologic Association.

20

UNITED STATES 
SECURITIES AND EXCHANGE COMMISSION 
Washington, D.C.  20549 

FORM 10-K 

[X] 

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

For the fiscal year ended December 31, 2012 

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:  001-31899 

WHITING PETROLEUM CORPORATION 
(Exact name of registrant as specified in its charter) 

Delaware 
(State or other jurisdiction 
of incorporation or organization) 

1700 Broadway, Suite 2300 
Denver, Colorado 
(Address of principal executive offices) 

20-0098515 
(I.R.S. Employer 
Identification No.) 

80290-2300 
(Zip code) 

(303) 837-1661 
(Registrant’s telephone number, including area code) 

Securities registered pursuant to Section 12(b) of the Act: 

6.25% Convertible Perpetual Preferred Stock, 
$0.001 par value 
Common Stock, $0.001 par value 
Preferred Share Purchase Rights 
(Title of Class) 

New York Stock Exchange 
New York Stock Exchange 
New York Stock Exchange 
(Name of each exchange on which registered) 

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  (cid:1)  No  (cid:2) 

Indicate by check mark if the Registrant is not required to file reports pursuant to Section 13 or 15(d) of the Securities 
Act.  Yes  (cid:2)  No  (cid:1) 

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  (cid:1)  No  (cid:2) 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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  (cid:1) 

No  (cid:2) 

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, 
and will not be contained, to the best of 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.  (cid:1) 

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

Large accelerated filer  (cid:1)  Accelerated filer    (cid:2)  Non-accelerated filer  (cid:2) 

Smaller reporting company   (cid:2) 

Indicate by check mark whether the Registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).        
Yes  (cid:2)  No  (cid:1) 

Aggregate  market  value  of  the  voting  common  stock  held  by  non-affiliates  of  the  registrant  at  June  30,  2012:  
$4,845,579,443. 

Number of shares of the registrant’s common stock outstanding at February 15, 2013:  117,829,366 shares. 

DOCUMENTS INCORPORATED BY REFERENCE 

Portions of the Proxy Statement for the 2013 Annual Meeting of Stockholders are incorporated by reference into Part III. 

 
 
 
TABLE OF CONTENTS 

Glossary of Certain Definitions .............................................................................................

3 

PART I 

8 
Item 1. 
Business ................................................................................................................................................
22 
Item 1A.  Risk Factors ..........................................................................................................................................
36 
Item 1B.  Unresolved Staff Comments .................................................................................................................
36 
Properties ..............................................................................................................................................
Item 2. 
Legal Proceedings ................................................................................................................................45 
Item 3. 
45 
Mine Safety Disclosures .......................................................................................................................
Item 4. 
Executive Officers of the Registrant ................................................................................................46 

PART II 

Item 5. 

Item 6. 
Item 7. 

Market for the Registrant’s Common Equity, Related Stockholder Matters and 
Issuer Purchases of Equity Securities ................................................................................................48 
50 
Selected Financial Data ........................................................................................................................
Management’s Discussion and Analysis of Financial Condition and Results of 
51 
Operations .............................................................................................................................................
72 
Item 7A.  Quantitative and Qualitative Disclosure About Market Risk ...............................................................
75 
Financial Statements and Supplementary Data.....................................................................................
Item 8. 
Changes in and Disagreements with Accountants on Accounting and Financial 
Item 9. 
116 
Disclosure .............................................................................................................................................
116 
Item 9A.  Controls and Procedures .......................................................................................................................
Item 9B.  Other Information ................................................................................................................................118 

PART III 

Item 10.  Directors, Executive Officers and Corporate Governance ................................................................118 
118 
Executive Compensation ......................................................................................................................
Item 11. 
Security Ownership of Certain Beneficial Owners and Management and Related 
Item 12. 
118 
Stockholder Matters ..............................................................................................................................
119 
Item 13.  Certain Relationships, Related Transactions and Director Independence ............................................
119 
Principal Accounting Fees and Services ...............................................................................................
Item 14. 

Item 15. 

119 
Exhibits, Financial Statement Schedules ..............................................................................................

PART IV 

2 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
GLOSSARY OF CERTAIN DEFINITIONS 

Unless the context otherwise requires, the terms “we,” “us,” “our” or “ours” when used in this Annual Report on 
Form 10-K refer to Whiting Petroleum Corporation, together with its consolidated subsidiaries.  When the context 
requires, we refer to these entities separately. 

We have included below the definitions for certain terms used in this Annual Report on Form 10-K: 

“3-D  seismic”  Geophysical  data  that  depict  the  subsurface  strata  in  three  dimensions.    3-D  seismic  typically 
provides a more detailed and accurate interpretation of the subsurface strata than 2-D, or two-dimensional, seismic. 

“Bbl” One stock tank barrel, or 42 U.S. gallons liquid volume, used in this report in reference to oil, NGLs and 
other liquid hydrocarbons. 

“Bcf” One billion cubic feet of natural gas. 

“BOE” One stock tank barrel of oil equivalent, computed on an approximate energy equivalent basis that one Bbl 
of crude oil equals six Mcf of natural gas and one Bbl of crude oil equals one Bbl of natural gas liquids. 

“CO2” Carbon dioxide. 

“CO2 flood” A tertiary recovery method in which CO2 is injected into a reservoir to enhance hydrocarbon recovery. 

“completion” The installation of permanent equipment for the production of crude oil or natural gas, or in the case 
of a dry hole, the reporting of abandonment to the appropriate agency. 

“costless  collar”  An  options  position  where the  proceeds from  the sale  of  a  call  option at its  inception  fund  the 
purchase of a put option at its inception. 

“differential” The difference between a benchmark price of oil and natural gas, such as the NYMEX crude oil spot, 
and the wellhead price received. 

“deterministic  method”  The  method  of  estimating  reserves  or  resources  using  a  single  value  for  each  parameter 
(from the geoscience, engineering or economic data) in the reserves calculation. 

“development  well”  A  well  drilled  within  the  proved  area  of  an  oil  or  natural  gas  reservoir  to  the  depth  of  a 
stratigraphic horizon known to be productive. 

“exploratory well” A well drilled to find a new field or to find a new reservoir in a field previously found to be 
productive  of  oil  or  natural  gas  in  another  reservoir.    Generally,  an  exploratory  well  is  any  well  that  is  not  a 
development well, an extension well, a service well or a stratigraphic test well. 

“extension well” A well drilled to extend the limits of a known reservoir. 

“FASB” Financial Accounting Standards Board. 

“FASB ASC” The Financial Accounting Standards Board Accounting Standards Codification. 

“field”  An  area  consisting  of  a  single  reservoir  or  multiple  reservoirs  all  grouped  on  or  related  to  the  same 
individual geological structural feature and/or stratigraphic condition.  There may be two or more reservoirs in a 
field that are separated vertically by intervening impervious strata, or laterally by local geologic barriers, or both.  
Reservoirs  that  are  associated  by  being  in  overlapping  or  adjacent  fields  may  be  treated  as  a  single  or  common 
operational field.  The geological terms “structural feature” and “stratigraphic condition” are intended to identify 

3 

 
 
localized geological features as opposed to the broader terms of basins, trends, provinces, plays, areas of interest, 
etc. 

“GAAP” Generally accepted accounting principles in the United States of America. 

“gross acres or wells” The total acres or wells, as the case may be, in which a working interest is owned. 

“lease operating expense” or “LOE” The expenses of lifting oil or gas from a producing formation to the surface, 
constituting part of the current operating expenses of a working interest, and also including labor, superintendence, 
supplies,  repairs,  short-lived  assets,  maintenance,  allocated  overhead  costs  and  other  expenses  incidental  to 
production, but not including lease acquisition or drilling or completion expenses. 

“LIBOR” London interbank offered rate. 

“MBbl” One thousand barrels of oil or other liquid hydrocarbons. 

“MBbl/d” One MBbl per day. 

“MBOE” One thousand BOE. 

“MBOE/d” One MBOE per day. 

“Mcf” One thousand cubic feet of natural gas. 

“MMBbl” One million Bbl. 

“MMBOE” One million BOE. 

“MMBtu” One million British Thermal Units. 

“MMcf” One million cubic feet of natural gas. 

“MMcf/d” One MMcf per day.  

“net production” The total production attributable to our fractional working interest owned. 

“NGL” Natural gas liquid. 

“NYMEX” The New York Mercantile Exchange. 

“PDNP” Proved developed nonproducing reserves. 

“PDP” Proved developed producing reserves. 

“plugging and abandonment” Refers to the sealing off of fluids in the strata penetrated by a well so that the fluids 
from  one  stratum  will  not escape  into  another  or  to  the  surface.   Regulations  of  many  states require  plugging  of 
abandoned wells. 

“possible reserves” Those reserves that are less certain to be recovered than probable reserves. 

“pre-tax PV10%” The present value of estimated future revenues to be generated from the production of proved 
reserves  calculated  in  accordance  with  the  guidelines  of  the  SEC,  net  of  estimated  lease  operating  expense, 
production taxes and future  development  costs,  using  costs  as  of  the  date  of  estimation  without  future escalation 
and using an average of the first-day-of-the month price for each of the 12 months within the fiscal year, without 

4 

 
 
giving  effect  to  non-property  related  expenses  such  as  general  and  administrative  expenses,  debt  service  and 
depreciation, depletion and amortization, or Federal income taxes and discounted using an annual discount rate of 
10%.  Pre-tax PV10% may be considered a non-GAAP financial measure as defined by the SEC.  See footnote ( ) 
to the Proved Reserves table in Item 1. “Business” of this Annual Report on Form 10-K for more information. 

2

“probable reserves” Those reserves that are less certain to be recovered than proved reserves but which, together 
with proved reserves, are as likely as not to be recovered. 

“proved  developed  reserves”  Proved  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 to the cost of a new well. 

“proved  reserves” Those reserves  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 extract the hydrocarbons 
must  have  commenced,  or  the  operator  must  be  reasonably  certain  that  it  will  commence  the  project,  within  a 
reasonable time. 

The area of the reservoir considered as proved includes all of the following: 

a. 

b. 

The area identified by drilling and limited by fluid contacts, if any, and 

Adjacent  undrilled  portions  of  the  reservoir  that  can,  with  reasonable  certainty,  be  judged  to  be 
continuous  with  it  and  to  contain  economically  producible  oil  or  gas  on  the  basis  of  available 
geoscience and engineering data. 

Reserves that can be produced economically through application of improved recovery techniques (including, but 
not limited to, fluid injection) are included in the proved classification when both of the following occur: 

a. 

b. 

Successful testing by a pilot project in an area of the reservoir with properties no more favorable 
than  in  the  reservoir  as  a  whole,  the  operation  of  an  installed  program  in  the  reservoir  or  an 
analogous  reservoir,  or  other  evidence  using  reliable  technology  establishes  the  reasonable 
certainty of the engineering analysis on which the project or program was based, and 

The  project  has  been  approved  for  development  by  all  necessary  parties  and  entities,  including 
governmental entities. 

Existing  economic  conditions  include  prices  and  costs  at  which  economic  producibility  from  a  reservoir  is  to be 
determined.  The price shall be the average price during the 12-month period before the ending date of the period 
covered by the report, determined as an unweighted arithmetic average of the first-day-of-the-month price for each 
month within such period, unless prices are defined by contractual arrangements, excluding escalations based upon 
future conditions. 

“proved  undeveloped  reserves”  Proved  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.    Reserves  on 
undrilled acreage shall be limited to those directly offsetting development spacing areas that are reasonably certain 
of production when drilled, unless evidence using reliable technology exists that establishes reasonable certainty of 
economic producibility at greater distances.  Undrilled locations can be classified as having undeveloped reserves 
only if a development plan has been adopted indicating that they are schedule to be drilled within five years, unless 
specific  circumstances  justify  a  longer  time.    Under  no  circumstances  shall  estimates  for  proved  undeveloped 
reserves  be  attributable  to  any  acreage  for  which  an  application  of  fluid  injection  or  other  improved  recovery 

5 

 
 
technique  is  contemplated,  unless  such  techniques  have  been  proved  effective  by  actual  projects  in  the  same 
reservoir  or  an  analogous  reservoir,  or  by  other  evidence  using  reliable  technology  establishing  reasonable 
certainty. 

“PUD” Proved undeveloped reserves. 

“reasonable certainty” If deterministic methods are used, reasonable certainty means a high degree of confidence 
that  the  quantities  will  be  recovered.    If  probabilistic  methods  are  used,  there  should  be  at  least  a  90  percent 
probability that the quantities actually recovered will equal or exceed the estimate.  A high degree of confidence 
exists if the quantity is much more likely to be achieved than not, and, as changes due to increased availability of 
geoscience  (geological,  geophysical  and  geochemical)  engineering,  and  economic  data  are  made  to  estimated 
ultimate  recovery  with  time,  reasonably  certain  estimated  ultimate  recovery  is  much  more  likely  to  increase  or 
remain constant than to decrease. 

“recompletion” An operation whereby a completion in one zone is abandoned in order to attempt a completion in a 
different zone within the existing wellbore. 

“reserves”  Estimated  remaining  quantities  of  oil  and  gas  and  related  substances  anticipated  to  be  economically 
producible, as of a given date, by application of development projects to known accumulations.  In addition, there 
must exist, or there must be a reasonable expectation that there will exist, the legal right to produce or a revenue 
interest in the production, installed means of delivering oil and gas or related substances to market, and all permits 
and financing required to implement the project. 

“reservoir” A porous and permeable underground formation containing a natural accumulation of producible crude 
oil and/or natural gas that is confined by impermeable rock or water barriers and is individual and separate from 
other reservoirs. 

“resource  play”  Refers  to  drilling  programs  targeted  at  regionally  distributed  oil  or  natural  gas  accumulations.  
Successful  exploitation  of  these  reservoirs  is  dependent  upon  new  technologies  such  as  horizontal  drilling  and 
multi-stage  fracture  stimulation  to  access  large  rock  volumes  in  order  to  produce  economic  quantities  of  oil  or 
natural gas. 

“royalty” The  amount  or fee  paid  to the  owner  of  mineral  rights,  expressed  as a  percentage  or  fraction  of  gross 
income  from  crude  oil  or  natural  gas  produced  and  sold,  unencumbered  by  expenses  relating  to  the  drilling, 
completing or operating of the affected well. 

“royalty  interest”  An  interest  in  an  oil  or  natural  gas  property  entitling  the  owner  to  shares  of  the  crude  oil  or 
natural gas production free of costs of exploration, development and production operations. 

“SEC” The United States Securities and Exchange Commission. 

“service well” A service well is a well drilled or completed for the purpose of supporting production in an existing 
field.  Wells in this class are drilled for the following specific purposes: gas injection (natural gas, propane, butane 
or  flue  gas),  water  injection,  steam  injection,  air  injection,  salt-water  disposal,  water  supply  for  injection, 
observation or injection for in-situ combustion. 

“standardized measure of discounted future net cash flows” The discounted future net cash flows relating to proved 
reserves based on the average price during the 12-month period before the ending date of the period covered by the 
report, determined as an unweighted arithmetic average of the first-day-of-the-month price for each month within 
such  period  (unless  prices  are  defined  by  contractual  arrangements,  excluding  escalations  based  upon  future 
conditions); current costs and statutory tax rates (to the extent applicable); and a 10% annual discount rate. 

“working interest” The interest in a crude oil and natural gas property (normally a leasehold interest) that gives the 
owner the right to drill, produce and conduct operations on the property and a share of production, subject to all 

6 

 
 
royalties, overriding royalties and other burdens and to all costs of exploration, development and operations and all 
risks in connection therewith. 

“workover” Operations on a producing well to restore or increase production. 

7 

 
 
 
Item 1.  Business 

Overview 

PART I 

We  are  an  independent  oil  and  gas  company  engaged  in  exploration,  development,  acquisition  and  production 
activities primarily in the Rocky Mountains, Permian Basin, Mid-Continent, Michigan and Gulf Coast regions of 
the United States.  We were incorporated in 2003 in connection with our initial public offering. 

Since  our  inception  in  1980,  we  have  built  a  strong  asset  base  and  achieved  steady  growth  through  property 
acquisitions,  development  and  exploration  activities.    As  of  December  31,  2012,  our  estimated  proved  reserves 
totaled 378.8 MMBOE, representing a 10% increase in our proved reserves since December 31, 2011.  Our 2012 
average daily production was 82.5 MBOE/d and implies an average reserve life of approximately 12.6 years. 

The  following  table  summarizes  by  core  area,  our  estimated  proved  reserves  as  of  December  31,  2012,  their 
corresponding pre-tax PV10% values, and our fourth quarter 2012 average daily production rates, as well as our 
company’s total standardized measure of discounted future net cash flows as of December 31, 2012: 

Oil 
(MMBbl) 

Core Area 
Rocky Mountains ......................154.0 
Permian Basin ...........................103.7 
Mid-Continent ...........................40.9 
Michigan ................................
1.7 
Gulf Coast ................................ 1.0 
Total................................301.3 

Discounted Future 

Income Taxes .........................

- 

Standardized Measure 
of Discounted Future 
Net Cash Flows ......................

- 

NGLs 
(MMBbl) 

17.9 
15.9 
4.9 
1.2 
0.2 
40.1 

- 

- 

Proved Reserves (1) 

Natural 
Gas 
(Bcf) 
139.8 
25.1 
20.4 
28.1 
10.9 
224.3 

Total 
(MMBOE) 
195.2 
123.8 
49.2 
7.6 
3.0 
378.8 

- 

- 

- 

- 

Pre-Tax 
PV10% 
Value (2) 
(In millions) 
$  4,488.9 
1,731.9 
969.4 
62.0 
31.7 
$  7,283.9 

(1,876.9) 

$  5,407.0 

% 
Oil 
79% 
84% 
83% 
22% 
33% 
80% 

- 

- 

4th Quarter 2012 
Average Daily 
Production 
(MBOE/d) 
63.0 
11.0 
8.1 
2.7 
1.3 
86.1 

- 

- 

_____________________ 
(1)  Oil  and  gas  reserve  quantities  and  related  discounted  future  net  cash  flows  have  been  derived  from  oil  and  gas  prices 
calculated using an average of the first-day-of-the month price for each month within the 12 months ended December 31, 
2012, pursuant to current SEC and FASB guidelines. 

(2)  Pre-tax  PV10%  may  be  considered  a  non-GAAP  financial  measure  as  defined  by  the  SEC  and  is  derived  from  the 
standardized  measure  of  discounted  future  net  cash  flows,  which  is  the  most  directly  comparable  GAAP  financial 
measure.  Pre-tax PV10% is computed on the same basis as the standardized measure of discounted future net cash flows 
but without deducting future income taxes.  We believe pre-tax PV10% is a useful measure for investors for evaluating 
the relative monetary significance of our oil and natural gas properties.  We further believe investors may utilize our pre-
tax PV10% as a basis for comparison of the relative size and value of our proved reserves to other companies because 
many  factors  that  are  unique  to  each  individual  company  impact  the  amount  of  future  income  taxes  to  be  paid.    Our 
management uses this measure when assessing the potential return on investment related to our oil and gas properties and 
acquisitions.    However,  pre-tax  PV10%  is  not  a  substitute  for  the  standardized  measure  of  discounted  future  net  cash 
flows.  Our pre-tax PV10% and the standardized measure of discounted future net cash flows do not purport to present 
the fair value of our proved oil, NGL and natural gas reserves. 

While  historically  we  have  grown  through  acquisitions,  we  are  increasingly  focused  on  a  balance  between  our 
exploration and development programs and are continuing to selectively pursue acquisitions that complement our 
existing core properties.  We believe that our significant drilling inventory, combined with our operating experience 
and cost structure, provides us with meaningful organic growth opportunities. 

8 

 
 
 
 
 
 
 
Our growth plan is centered on the following activities: 

•  pursuing the development of projects that we believe will generate attractive rates of return; 
•  maintaining a balanced portfolio of lower risk, long-lived oil and gas properties that provide stable cash 

• 
• 

flows; 
seeking property acquisitions that complement our core areas; and 
allocating  a  portion  of  our  exploration  and  development  (“E&D”)  budget  to  leasing  and  exploring 
prospect areas. 

During 2012, we incurred $2,113.8 million in exploration, development and cash acquisition capital expenditures, 
including $1,951.7 million for the drilling of 397 gross (192.9 net) wells.  Of these new wells, 188.2 (net) resulted 
in productive completions and 4.7 (net) were unsuccessful, yielding a 98% success rate.   

Our current 2013 E&D budget is $2,200.0 million, and included in this amount is approximately $108.0 million in 
acreage acquisition costs.  The 2013 budget of $2,200.0 million represents a 4% increase from the $2,111.5 million 
in E&D (which consisted of exploration, development and acreage expenditures) we incurred in 2012.  We expect 
to fund substantially all of our 2013 E&D budget using net cash provided by operating activities, borrowings under 
our credit facility and certain oil and gas property divestitures.  We sell properties when we believe that the sales 
price realized will provide an above average rate of return for the property or when the property no longer matches 
the profile of properties we desire to own. 

Acquisitions and Divestitures 

The  following  is  a  summary  of  our  acquisitions  and  divestitures  during  the  last  two  years.    See  “Management’s 
Discussion  and  Analysis  of  Financial  Condition  and  Results  of  Operations”  for  more  information  on  these 
acquisitions and divestitures. 

2012 Acquisitions.  On March 22, 2012, we completed the acquisition of approximately 13,300 net undeveloped 
acres in the Missouri Breaks prospect in Richland County, Montana for $33.3 million. 

2012  Divestitures.    On  May  18,  2012,  we  sold  a  50%  ownership  interest  in  our  Belfield  gas  processing  plant, 
natural gas gathering system, oil gathering system and related facilities located in Stark County, North Dakota for 
total  cash  proceeds  of  $66.2  million.    We  used  the  net  proceeds  from  the  sale  to  repay  a  portion  of  the  debt 
outstanding under our credit agreement. 

On March 28, 2012, we completed an initial public offering of units of beneficial interest in Whiting USA Trust II 
(“Trust II”), selling 18,400,000 Trust II units at $20.00 per unit, which generated net proceeds of $322.3 million 
after underwriters’ fees, offering expenses and post-close adjustments.  We used the net offering proceeds to repay 
a portion of the debt outstanding under our credit agreement.  The net proceeds from the sale of Trust II units to the 
public resulted in a deferred gain on sale of $128.2 million.   

Immediately prior to the closing of the offering, we conveyed a term net profits interest in certain of our oil and gas 
properties to Trust II in exchange for 100% of the trust’s units issued, or 18,400,000 units.  The net profits interest 
entitles  Trust  II  to  receive  90%  of  the  net  proceeds  from  the  sale  of  oil  and  natural  gas  production  from  the 
underlying properties.  The net profits interest will terminate on the later to occur of (1) December 31, 2021, or (2) 
the time when 11.79 MMBOE have been produced from the underlying properties and sold.  This is the equivalent 
of 10.61 MMBOE in respect of Trust II’s right to receive 90% of the net proceeds from such reserves pursuant to 
the net profits interest.  The conveyance of the net profits interest to Trust II consisted entirely of proved reserves of 
10.61 MMBOE as of the January 1, 2012 effective date, representing 3% of our proved reserves as of December 31, 
2011 and 5% (or 4.5 MBOE/d) of our March 2012 average daily net production. 

9 

 
 
 
2011 Acquisitions.  On July 28, 2011, we completed the acquisition of approximately 23,400 net acres and one well 
in the Missouri Breaks prospect in Richland County, Montana for an unadjusted purchase price of $46.9 million.   

On  March  18,  2011,  we  formed  Sustainable  Water  Resources,  LLC  (“SWR”)  with  an  unrelated  third  party  to 
develop a water project in the state of Colorado.  We contributed $25.0 million for a 75% interest in SWR, and the 
25% noncontrolling interest in SWR was ascribed a fair value of $8.3 million, which consisted of $2.5 million in 
cash contributions, as well as $5.8 million in intangible and fixed assets contributed to the joint venture.   

On  February  15,  2011,  we  completed  the  acquisition  of  6,000  net  undeveloped  acres  and  additional  working 
interests in  the  Pronghorn  field  in  Billings  and  Stark  counties,  North  Dakota,  for  an  aggregate  purchase  price  of 
$40.0 million. 

2011  Divestitures.    On  September  29,  2011,  we  sold  our  interest  in  several  non-core  oil  and  gas  producing 
properties located in the Karnes, Live Oak and DeWitt counties of Texas for total cash proceeds of $64.8 million, 
resulting in a pre-tax gain on sale of $12.3 million.  We used the net proceeds from the property sale to repay a 
portion of the debt outstanding under our credit agreement. 

Business Strategy  

Our  goal  is  to  generate  meaningful  growth  in  our  net  asset  value  per  share  of  proved  reserves  through  the 
exploration, development and acquisition of oil and gas projects with attractive rates of return on capital employed.  
To date, we have pursued this goal through both continued field development in our core areas and the acquisition 
of reserves.  Because of our extensive property base, we are pursuing several economically attractive oil and gas 
opportunities to exploit and develop properties as well as explore our acreage positions for additional production 
growth and proved reserves.  Specifically, we have focused, and plan to continue to focus, on the following: 

Pursuing High-Return Organic Reserve Additions.  The development of large resource plays such as our Williston 
Basin  project  has  become  one  of  our  central  objectives.    As  of  December  31,  2012,  we  have  assembled 
approximately  1,109,200  gross (703,700  net)  developed  and  undeveloped  acres in  the  Williston  Basin  located  in 
Montana and North Dakota.  As of December 31, 2012, we had 20 drilling rigs operating in the Williston Basin.  
During  2012,  the  focus  of  our  development  has  expanded  beyond  the  Sanish  field  to  include  several  additional 
areas  in  the  Williston  Basin  such  as  the  Lewis  &  Clark/Pronghorn,  Hidden  Bench/Tarpon,  Missouri  Breaks  and 
Cassandra prospects.  We have completed the construction of our gas processing plant located south of Belfield, 
North Dakota, which has a processing capacity of 30 MMcf/d and which primarily processes production from the 
Pronghorn area.  Currently, there is inlet compression in place to process 24 MMcf/d, and as of December 31, 2012 
the plant was processing 18 MMcf/d.  In November 2012, we began connecting other operators’ wells to the plant.  
We intend to add inlet compression during 2013 in order to fully utilize the 30 MMcf/d processing capability.  We 
are also currently installing fractionation equipment to convert NGLs into propane and butane, which end products 
are typically  sold  for  higher  realized  prices in local markets.    Additionally,  we  completed construction on  an  oil 
terminal  and  a  seven-mile  oil  transmission  line  to  allow  for  the  delivery  of  oil  production  from  the  Pronghorn 
prospect  into  the  Bridger  Four  Bears  oil  transmission  system.    The  use  of  this  terminal  will  reduce  our 
transportation costs per barrel and thereby increase our returns on the development of this prospect. 

Developing and Exploiting Existing Properties.  Our existing property base and our acquisitions over the past five 
years  have  provided  us  with  numerous  low-risk  opportunities  for  exploitation  and  development  drilling.    As  of 
December  31,  2012,  we  have  identified  a  drilling  inventory  of  over  2,400  gross  wells  that  we  believe  will  add 
substantial production over the next five years.  Our drilling inventory consists of the development of our proved 
and  non-proved  reserves.    Additionally,  we  have  several  opportunities  to  apply  and  expand  enhanced  recovery 
techniques that we expect will increase proved reserves and extend the productive lives of our mature fields.  In 
2005, we acquired two large oil fields, the Postle field, located in the Oklahoma Panhandle, and the North Ward 
Estes field, located in the Permian Basin of West Texas.  We have experienced significant production increases to 
date  in  these  fields  through  the  use  of  secondary  and  tertiary  recovery  techniques,  and  we  anticipate  such 
production increases at the North Ward Estes field to continue over the next four to five years.  In these fields, we 

10 

 
 
are actively injecting water and CO2 and executing extensive re-development, drilling and completion operations, 
as well as expanding our gas processing facilities, which will allow us to separate and inject over 300 MMcf/d of 
recycled CO2 and thereby maximize our recovery of oil and gas from these reservoirs. 

Growing Through Accretive Acquisitions.  From 2004 to 2012, we completed 16 separate significant acquisitions of 
producing properties for estimated proved reserves of 230.9 MMBOE, as of the effective dates of the acquisitions.  
Our experienced team of management, land, engineering and geoscience professionals has developed and refined 
an acquisition program designed to increase reserves and complement our existing properties, including identifying 
and  evaluating  acquisition  opportunities,  closing  purchases  and  then  effectively  managing  properties  we  acquire.  
We intend to selectively pursue the acquisition of properties complementary to our core operating areas. 

Disciplined  Financial  Approach.    Our  goal  is  to  remain  financially  strong,  yet  flexible,  through  the  prudent 
management  of  our  balance  sheet  and  active  management  of  commodity  price  volatility.    We  have  historically 
funded our acquisitions and growth activity through a combination of equity and debt issuances, bank borrowings, 
internally generated cash flow and certain oil and gas divestitures, as appropriate, to maintain our strong financial 
position.  From time to time, we monetize non-core properties and use the net proceeds from these asset sales to 
repay debt under our credit agreement.  To support cash flow generation on our existing properties and help ensure 
expected  cash  flows  from  acquired  properties,  we  periodically  enter into  derivative  contracts.  Typically, we  use 
costless collars and fixed price gas contracts to provide an attractive base commodity price level.  

Competitive Strengths 

We believe that our key competitive strengths lie in our balanced asset portfolio, our experienced management and 
technical team and our commitment to effective application of new technologies. 

Balanced,  Long-Lived  Asset  Base.    As  of  December  31,  2012,  we  had  interests  in  10,218  gross  (3,927  net) 
productive wells across approximately 1,277,400 gross (680,300 net) developed acres in our five core geographical 
areas.    We  believe  this  geographic  mix  of  properties  and  organic  drilling  opportunities,  combined  with  our 
continuing  business  strategy  of  acquiring  and  exploiting  properties  in  these  areas,  presents  us  with  multiple 
opportunities  to  execute  our  strategy  because  we  are  not  dependent  on  any  particular  producing  regions  or 
geological formations.  Our proved reserve life is approximately 12.6 years based on year-end 2012 proved reserves 
and 2012 production. 

Experienced  Management  Team.    Our  management  team  averages  29  years  of  experience  in  the  oil  and  gas 
industry.    Our  personnel  have  extensive  experience  in  each  of  our  core  geographical  areas  and  in  all  of  our 
operational disciplines.  In addition, each of our acquisition professionals has at least 32 years of experience in the 
evaluation, acquisition and operational assimilation of oil and gas properties. 

Commitment  to  Technology.    In  each  of  our  core  operating  areas,  we  have  accumulated  detailed  geologic  and 
geophysical  knowledge  and  have  developed  significant  technical  and  operational  expertise.    In  recent  years,  we 
have developed considerable expertise in conventional and 3-D seismic imaging and interpretation.  Our technical 
team  has access  to  approximately  7,224  square  miles  of 3-D  seismic  data,  digital  well  logs  and  other  subsurface 
information.  This data is analyzed with advanced geophysical and geological computer resources dedicated to the 
accurate  and  efficient  characterization  of  the  subsurface  oil  and  gas  reservoirs  that  comprise  our  asset  base.    In 
addition, our information systems enable us to update our production databases through daily uploads from hand 
held computers in the field.  With the acquisition of the Postle and North Ward Estes properties, we have assembled 
a team of 12 professionals averaging over 24 years of expertise managing CO2 floods.  This provides us with the 
ability  to  pursue  other  CO2  flood  targets  and  employ  this  technology  to  add  reserves  to  our  portfolio.    This 
commitment to technology has increased the productivity and efficiency of our field operations and development 
activities. 

In 2011, we completed the build-out and installation of our in-house rock analysis laboratory.  This state-of-the-art 
facility includes two scanning electron microscopes (“SEM”), and these SEMs enable rapid turnaround analysis of 

11 

 
 
drilling or cored wells designed to support real-time drilling and completion decisions.  These SEMs also allow us 
to quantify porosity networks, which in turn helps our staff comparatively evaluate producing zones in present and 
future plays under consideration.  In addition, having SEMs in-house allows our team of experts to analyze samples 
more  rapidly  than  an  outside  service  company  would  and  with  the  full  operational  context  that  only  full-time 
employees  possess,  while  protecting  our  proprietary  data.    Furthermore,  we  have  established  a  two-room  core 
layout facility capable of displaying several hundred feet of core slabs under plain or ultraviolet light.  The ability 
for multidisciplinary groups such as geoscientists, operations personnel, reservoir engineers, drilling engineers and 
senior management to discuss technical issues over the displayed cores has helped us become a leader in tight oil 
play exploration and development.  

Over  the  past  few  years,  we  utilized  our  “Drill  Well  on  Paper”  optimization  process  to  significantly  reduce  the 
number of days it takes to drill a well.  Due to the success of this program, in September 2012 we expanded the 
concept using a program called “Build-to-POP.”  The objective of this program is to optimize the process from the 
time we build a drilling location to the time we put a well on production (“POP”), to reduce our overall cycle time.  
Early results have reduced the time from spud to POP from just under 91 days per well to approximately 67 days 
per well.  We have realized similar results in the amount of time required to move a rig from one location to the 
next.  Our rig move times have dropped from approximately nine days to just over seven days.  We plan to take 
what we learn with this project in the Williston Basin and apply the process to our Redtail prospect in Colorado. 

As the Bakken project in the Williston Basin matures and wells are drilled across large areas of the Williston Basin, 
we have assembled a more comprehensive database of information.  This provides the opportunity to apply more 
scientific  analysis  of  the  data  and  to  develop  tools  to  assist  our  petro-technical  staff  with  well  and  completion 
designs.  In mid-2012, we initiated a study with a major service provider to review, analyze and make refinements 
to  our  fracture  stimulations.    Results  from  this  study  have  enhanced  our  ability  to  numerically  model  fracture 
stimulations  and  to  make  refinements  to  increase  the  effectiveness  of  these  stimulations  and  improve  well 
performance. 

12 

 
 
Proved, Probable and Possible Reserves 

Our estimated proved, probable and possible reserves as of December 31, 2012 are summarized in the table below.  
See  “Reserves”  in  Item  2  of  this  Annual  Report  on  Form  10-K  for  information  relating  to  the  uncertainties 
surrounding these reserve categories. 

Rocky Mountains: 

PDP ................................
PDNP ................................
PUD ................................

Oil 
(MMBbl) 
98.0 
0.4 
55.6 
154.0 
Total Proved .............................
Total Probable ..........................43.7 
Total Possible............................43.3 

Permian Basin: 

PDP ................................
PDNP ................................
PUD ................................

44.2 
15.8 
43.7 
103.7 
Total Proved .............................
Total Probable ..........................27.6 
Total Possible............................78.2 

Mid-Continent: 

PDP ................................
PDNP ................................
PUD ................................

29.0 
0.9 
11.0 
Total Proved .............................40.9 
Total Probable ..........................11.0 
Total Possible............................0.1 

Michigan: 

PDP ................................
PDNP ................................
PUD ................................

1.0 
0.6 
0.1 
Total Proved .............................1.7 
Total Probable ..........................1.9 
Total Possible............................0.5 

Gulf Coast: 

PDP ................................
PDNP ................................
PUD ................................

0.9 
0.1 
- 
Total Proved .............................1.0 
Total Probable ..........................0.8 
Total Possible............................1.1 

Total Company: 

PDP ................................
PDNP ................................
PUD ................................

173.1 
17.8 
110.4 
301.3 
Total Proved .............................
Total Probable ..........................85.0 
123.2 
Total Possible............................

NGLs 
(MMBbl) 
11.9 
0.2 
5.8 
17.9 
3.2 
4.3 

Natural 
Gas 
(Bcf) 

94.5 
1.4 
43.9 
139.8 
42.2 
117.4 

Total 
(MMBOE) 
125.7 
0.8 
68.7 
195.2 
53.9 
67.1 

% of Total 
Proved 

65% 
-% 
35% 
100% 

12.1 
2.3 
10.7 
25.1 
43.6 
9.6 

17.0 
0.5 
2.9 
20.4 
3.9 
- 

16.3 
6.0 
5.8 
28.1 
9.8 
9.2 

8.6 
2.2 
0.1 
10.9 
10.1 
20.2 

148.5 
12.4 
63.4 
224.3 
109.6 
156.4 

4.2 
3.0 
8.7 
15.9 
6.6 
17.5 

3.8 
0.1 
1.0 
4.9 
1.5 
- 

0.5 
0.3 
0.4 
1.2 
0.2 
0.1 

0.2 
- 
- 
0.2 
0.4 
- 

20.6 
3.6 
15.9 
40.1 
11.9 
21.9 

13 

50.4 
19.2 
54.2 
123.8 
41.5 
97.3 

35.6 
1.1 
12.5 
49.2 
13.2 
0.1 

4.2 
1.9 
1.5 
7.6 
3.7 
2.2 

2.5 
0.5 
- 
3.0 
2.9 
4.5 

218.4 
23.5 
136.9 
378.8 
115.2 
171.2 

41% 
15% 
44% 
100% 

72% 
2% 
26% 
100% 

55% 
25% 
20% 
100% 

83% 
17% 
-% 
100% 

58% 
6% 
36% 
100% 

Estimated 
Future Capital 
Expenditures 
(In millions) 

$ 
$ 
$ 

1,645.0 
1,408.3 
1,478.7 

$ 
$ 
$ 

1,136.3 
560.0 
966.7 

$ 
$ 
$ 

$ 
$ 
$ 

$ 
$ 
$ 

375.7 
147.8 
0.4 

17.2 
32.3 
16.0 

7.4 
27.9 
71.6 

$ 
$ 
$ 

3,181.6 
2,176.3 
2,533.4 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The estimated future capital expenditures in the table above incorporate numerous assumptions and are subject to 
many uncertainties, including oil and natural gas prices, costs of oil field goods and services, drilling results and 
several other factors. 

Marketing and Major Customers 

We  principally  sell  our  oil  and  gas  production  to  end  users,  marketers  and  other  purchasers  that  have  access  to 
nearby pipeline facilities.  In areas where there is no practical access to pipelines, oil is trucked to storage facilities.  
The  table  below  presents  percentages  by  purchaser  that  accounted  for  10%  or  more  of  our  total  oil,  NGL  and 
natural gas sales for the years ended December 31, 2012, 2011 and 2010.  We believe that the loss of any individual 
purchaser would not have a long-term material adverse impact on our financial position or results of operations. 

2012 
Plains Marketing LP (1) ................................................................20% 
14% 
Shell Trading US ................................................................
Nexen Pipeline USA, Inc. (1) ................................................................
- 
Eighty Eight Oil Company ................................................................11% 
Bridger Trading LLC ................................................................ 11% 
EOG Resources, Inc. ................................................................ 4% 

2011 
27% 
13% 
- 
8% 
6% 
7% 

(1)  Effective December 30, 2010, Plains Marketing LP acquired Nexen Pipeline USA, Inc. 

2010 
16% 
17% 
13% 
4% 
5% 
10% 

Title to Properties 

Our  properties  are  subject  to  customary  royalty  interests,  liens  under  indebtedness,  liens  incident  to  operating 
agreements, liens for current taxes and other burdens, including other mineral encumbrances and restrictions.  Our 
credit agreement is also secured by a first lien on substantially all of our assets.  We do not believe that any of these 
burdens materially interfere with the use of our properties in the operation of our business. 

We believe that we have satisfactory rights or title to all of our producing properties.  As is customary in the oil and 
gas  industry,  limited  investigation of title is  made  at  the  time  of  acquisition  of undeveloped properties.    In  most 
cases,  we  investigate  title  and  obtain  title  opinions  from  counsel  only  when  we  acquire  producing  properties  or 
before commencement of drilling operations. 

Competition 

We  operate  in  a  highly  competitive  environment  for  acquiring  properties,  marketing  oil  and  natural  gas  and 
securing  trained  personnel.    Many  of  our  competitors  possess  and  employ  financial,  technical  and  personnel 
resources  substantially  greater  than  ours,  which  can  be  particularly  important  in  the  areas  in  which  we  operate.  
Those companies may be able to pay more for productive oil and gas properties and exploratory prospects and to 
evaluate,  bid  for  and  purchase  a  greater  number  of  properties  and  prospects  than  our  financial  or  personnel 
resources  permit.    Our  ability  to  acquire  additional  prospects  and  to  find  and  develop  reserves  in  the  future  will 
depend  on  our  ability  to  evaluate  and  select  suitable  properties  and  to  consummate  transactions  in  a  highly 
competitive environment.  Also, there is substantial competition for capital available for investment in the oil and 
gas industry. 

Regulation 

Regulation of Transportation, Sale and Gathering of Natural Gas  

The Federal Energy Regulatory Commission (the “FERC”) regulates the transportation, and to a lesser extent sale 
for resale, of natural gas in interstate commerce pursuant to the Natural Gas Act of 1938 and the Natural Gas Policy 
Act  of  1978  and  regulations  issued  under  those  Acts.    In  1989,  however,  Congress  enacted  the  Natural  Gas 
Wellhead  Decontrol  Act,  which  removed  all  remaining  price  and  non-price  controls  affecting  wellhead  sales  of 
natural gas, effective January 1, 1993.  While sales by producers of natural gas and all sales of crude oil, condensate 

14 

 
 
 
 
 
 
and NGLs can currently be made at uncontrolled market prices, in the future Congress could reenact price controls 
or enact other legislation with detrimental impact on many aspects of our business. 

Our  natural  gas  sales  are  affected  by  the  availability,  terms  and  cost  of  transportation.    The  price  and  terms  of 
access  to  pipeline  transportation  and  underground  storage  are  subject  to  extensive  federal  and  state  regulation.  
From 1985 to the present, several major regulatory changes have been implemented by Congress and the FERC that 
affect  the  economics  of  natural  gas  production,  transportation  and  sales.    In  addition,  the  FERC  is  continually 
proposing  and  implementing  new  rules  and  regulations  affecting  those  segments  of  the  natural  gas  industry  that 
remain subject to the FERC's jurisdiction, most notably interstate natural gas transmission companies and certain 
underground storage facilities.  These initiatives may also affect the intrastate transportation of natural gas under 
certain circumstances.  The stated purpose of many of these regulatory changes is to promote competition among 
the various sectors of the natural gas industry by making natural gas transportation more accessible to natural gas 
buyers and sellers on an open and non-discriminatory basis. 

The  FERC  implemented The  Outer  Continental  Shelf  Lands  Act  pertaining  to  transportation  and  pipeline  issues, 
which requires  that  all  pipelines  operating  on  or across  the  outer  continental shelf provide  open access and  non-
discriminatory transportation service.  One of the FERC’s principal goals in carrying out this Act’s mandate is to 
increase transparency in the market to provide producers and shippers on the outer continental shelf with greater 
assurance of open access services on pipelines located on the outer continental shelf and non-discriminatory rates 
and conditions of service on such pipelines. 

We  cannot  accurately  predict  whether  the  FERC’s  actions  will  achieve  the  goal  of  increasing  competition  in 
markets  in  which  our  natural  gas  is  sold.    In  addition,  many  aspects  of  these  regulatory  developments  have  not 
become final, but are still pending judicial and final FERC decisions.  Regulations implemented by the FERC in 
recent years could result in an increase in the cost of transportation service on certain petroleum product pipelines.  
The natural gas industry historically has been very heavily regulated.  Therefore, we cannot provide any assurance 
that the less stringent regulatory approach recently established by the FERC will continue.  However, we do not 
believe that any action taken will affect us in a way that materially differs from the way it affects other natural gas 
producers. 

Transportation and safety of natural gas is subject to regulation by the Department of Transportation (the “DOT”) 
under the  PIPES  Act  of  2006  and the  Pipeline  Safety,  Regulatory  Certainty  and Job  Creation  Act  of  2012.    The 
Pipeline and Hazardous Material Safety Administration (“PHMSA”), an agency with the DOT, enforces regulations 
on  interstate  natural  gas  transportation.    Intrastate  natural  gas  transportation  is  subject  to  enforcement  by  state 
regulatory  agencies.    State  regulatory  agencies  can  also  create  their  own  transportation  and  safety  regulations  as 
long  as  they  meet  PHMSA’s  minimum  requirements.    The  basis  for  intrastate  regulation  of  natural  gas 
transportation and the degree of regulatory oversight and scrutiny given to intrastate natural gas pipeline rates and 
services  varies  from  state  to  state.    Insofar  as  such  regulation  within  a  particular  state  will  generally  affect  all 
intrastate  natural  gas  shippers  within the  state  on  a  comparable  basis,  we  believe  that  the  regulation  of  similarly 
situated  intrastate  natural  gas  transportation  in  any  of  the  states  in  which  we  operate  and  ship  natural  gas  on  an 
intrastate basis will not affect our operations in any way that is of material difference from those of our competitors.  
Likewise, the effect of regulatory changes under the DOT and their effect on interstate natural gas transportation 
will not affect our operations in any way that is of material difference from those of our competitors.  We use the 
latest tools and technologies to remain compliant with current pipeline safety regulations. 

Regulation of Transportation of Oil  

Sales  of  crude  oil,  condensate  and  NGLs  are  not  currently  regulated  and  are  made  at  negotiated  prices.  
Nevertheless, Congress could reenact price controls in the future. 

Our crude oil sales are affected by the availability, terms and cost of transportation.  The transportation of oil in 
common  carrier  pipelines  is  also  subject  to  rate  regulation.    The  FERC  regulates  interstate  oil  pipeline 
transportation rates under the Interstate Commerce Act.  In general, interstate oil pipeline rates must be cost-based, 

15 

 
 
although settlement rates agreed to by all shippers are permitted and market-based rates may be permitted in certain 
circumstances.    Effective  January 1,  1995,  the  FERC  implemented  regulations  establishing  an  indexing  system 
(based  on  inflation)  for  crude  oil  transportation  rates  that  allowed  for  an  increase  or  decrease  in  the  cost  of 
transporting oil to the purchaser.  FERC’s regulations include a methodology for oil pipelines to change their rates 
through the use of an index system that establishes ceiling levels for such rates.  The most recent mandatory five-
year review period resulted in an order from FERC for the index to be based on Producer Price Index for Finished 
Goods (the “PPI-FG”), plus a 2.65% adjustment, for the five-year period July 1, 2011 through June 30, 2016.  This 
represents an increase for the PPI-FG plus 1.3% adjustment from the prior five-year period.  A requested rehearing 
of  the  order  was  denied  by  FERC.  The  regulations  provide  that  each  year  the  Commission  will  publish  the  oil 
pipeline  index  after  the  PPI-FG  becomes  available.    Intrastate  oil  pipeline  transportation  rates  are  subject  to 
regulation  by  state  regulatory  commissions.    The  basis  for  intrastate  oil  pipeline  regulation,  and  the  degree  of 
regulatory oversight and scrutiny given to intrastate oil pipeline rates, varies from state to state.  Insofar as effective 
interstate and intrastate rates are equally applicable to all comparable shippers, we believe that the regulation of oil 
transportation  rates  will  not  affect  our  operations  in  any  way  that  is  of  material  difference  from  those  of  our 
competitors. 

Further, interstate and intrastate common carrier oil pipelines must provide service on a non-discriminatory basis.  
Under this open access standard, common carriers must offer service to all shippers requesting service on the same 
terms  and  under  the  same  rates.    When  oil  pipelines operate  at  full  capacity,  access  is  governed  by  prorationing 
provisions  set  forth  in  the  pipelines’  published  tariffs.    Accordingly,  we  believe  that  access  to  oil  pipeline 
transportation services generally will be available to us to the same extent as to our competitors. 

Transportation  and  safety  of  oil  and  hazardous  liquid  is  subject  to  regulation  by  the  DOT  under  the  Pipeline 
Integrity, Protection, Enforcement and Safety Act of 2006 and the Pipeline Safety, Regulatory Certainty and Job 
Creation  Act  of  2012.    PHMSA  enforces  regulations  on  all  interstate  liquids  transportation  and  some  intrastate 
liquids transportation.  PHMSA does not enforce the regulations in states that are capable of enforcing the same 
regulations themselves.  The effect of regulatory changes under the DOT and their effect on interstate and intrastate 
oil and hazardous liquid transportation will not affect our operations in any way that is of material difference from 
those of our competitors. 

 Regulation of Production  

The production of oil and gas is subject to regulation under a wide range of local, state and federal statutes, rules, 
orders  and  regulations.    Federal,  state  and  local  statutes  and  regulations  require  permits  for  drilling  operations, 
drilling  bonds  and  periodic  report  submittals  during  operations.    All  of  the  states  in  which  we  own  and  operate 
properties have regulations governing conservation matters, including provisions for the unitization or pooling of 
oil  and  gas  properties,  the  establishment  of  maximum  allowable  rates  of  production  from  oil  and  gas  wells,  the 
regulation of well spacing and plugging and abandonment of wells.  The effect of these regulations is to limit the 
amount of oil and gas that we can produce from our wells and to limit the number of wells or the locations at which 
we  can  drill,  although  we  can  apply  for  exceptions  to  such  regulations  or  to  have  reductions  in  well  spacing.  
Moreover, each state generally imposes a production or severance tax with respect to the production or sale of oil, 
NGLs and natural gas within its jurisdiction. 

Some  of  our  offshore  operations  are  conducted  on  federal  leases  that  are  administered  by  the  Bureau  of  Ocean 
Energy Management (“BOEM”).  Currently, only 0.1% of our total production volumes are produced from offshore 
leases.  However, the present value of our future abandonment obligations associated with offshore properties was 
$30.8 million as of December 31, 2012.  Whiting is therefore required to comply with the regulations and orders 
issued  by  BOEM  under  the  Outer  Continental  Shelf  Lands  Act.    Among  other  things,  we  are  required  to  obtain 
prior BOEM approval for any exploration plans we pursue and approval for our lease development and production 
plans.  BOEM regulations also establish construction requirements for production facilities located on our federal 
offshore leases and govern the plugging and abandonment of wells and the removal of production facilities from 
these  leases.    Under limited  circumstances,  BOEM  could  require  us  to  suspend  or  terminate  our  operations  on  a 
federal lease. 

16 

 
 
BOEM  also  establishes  the  basis  for  royalty  payments  due  under  federal  oil  and  gas  leases  through  regulations 
issued  under  applicable  statutory  authority.    State  regulatory  authorities  establish  similar  standards  for  royalty 
payments due under state oil and gas leases.  The basis for royalty payments established by BOEM and the state 
regulatory authorities is generally applicable to all federal and state oil and gas lessees.  Accordingly, we believe 
that  the  impact  of  royalty  regulation  on  our  operations  should  generally  be  the  same  as  the  impact  on  our 
competitors. 

The failure to comply with these rules and regulations can result in substantial penalties.  Our competitors in the oil 
and gas industry are subject to the same regulatory requirements and restrictions that affect our operations. 

Environmental Regulations  

General.  Our oil and gas exploration, development and production operations are subject to stringent federal, state 
and local laws and regulations governing the discharge or release of materials into the environment or otherwise 
relating to environmental protection.  Numerous governmental agencies, such as the U.S. Environmental Protection 
Agency (the “EPA”) issue regulations to implement and enforce such laws, which often require difficult and costly 
compliance  measures  that  carry  substantial  administrative,  civil  and  criminal  penalties  or  that  may  result  in 
injunctive relief for failure to comply.  These laws and regulations may require the acquisition of a permit before 
drilling  or  facility  construction  commences,  restrict  the  types,  quantities  and  concentrations  of  various  materials 
that  can  be  released  into  the  environment  in  connection  with  drilling  and  production  activities;  limit  or  prohibit 
project siting, construction, or drilling activities on certain lands located within wilderness, wetlands, ecologically 
sensitive  and  other  protected  areas;  require  remedial  action  to  prevent  pollution  from  former  operations,  such  as 
plugging  abandoned  wells  or  closing  pits;  and  impose  substantial  liabilities  for  unauthorized  pollution  resulting 
from our operations.  The EPA and analogous state agencies may delay or refuse the issuance of required permits or 
otherwise include onerous or limiting permit conditions that may have a significant adverse impact on our ability to 
conduct  operations.    The  regulatory  burden  on  the  oil  and  gas  industry  increases  the  cost  of  doing  business  and 
consequently affects its profitability. 

Changes in environmental laws and regulations occur frequently, and any changes that result in more stringent and 
costly material handling, storage, transport, disposal or cleanup requirements could materially and adversely affect 
our operations and financial position, as well as those of the oil and gas industry in general.  While we believe that 
we are in compliance, in all material respects, with current applicable environmental laws and regulations and have 
not  experienced any  material  adverse  effect from  compliance  with these  environmental  requirements, there  is no 
assurance that this trend will continue in the future. 

The environmental laws and regulations which have the most significant impact on the oil and gas exploration and 
production industry are as follows: 

Superfund.   The  Comprehensive  Environmental  Response,  Compensation and  Liability  Act  of  1980,  as  amended 
(“CERCLA” or “Superfund”), and comparable state laws impose strict joint and several liability, without regard to 
fault  or  the  legality  of  conduct,  on  classes  of  persons  who  are  considered  to  be  responsible  for  the  release  of  a 
“hazardous  substance”  into  the  environment.    These  persons  include  the  owner  or  operator  of  the  site  where  a 
release occurred and anyone who disposed or arranged for the disposal of the hazardous substance released at the 
site.  Under CERCLA, such persons may be subject to joint and several liability for the costs of cleaning up the 
hazardous  substances that have  been  released  into  the  environment,  for damages  to  natural  resources  and for  the 
costs of certain health studies. It is not uncommon for neighboring landowners and other third parties to file claims 
for  personal  injury  and  property  damage  allegedly  caused  by  the  hazardous  substances  released  into  the 
environment.    In  the  course  of  our  ordinary  operations,  we  may  generate  material  that  may  be  regulated  as 
“hazardous substances.”  Consequently, we may be jointly and severally liable under CERCLA or comparable state 
statutes for all or part of the costs required to clean up sites at which these materials have been disposed or released. 

We currently own or lease, and in the past have owned or leased, properties that for many years have been used for 
the exploration and production of oil and gas.  Although we and our predecessors have used operating and disposal 

17 

 
 
practices  that  were  standard  in the  industry  at  the  time,  hazardous  substances, wastes  or  hydrocarbons  may  have 
been released on, under, or from the properties owned or leased by us or on, under, or from other locations where 
such substances have been taken for recycling or disposal.  In addition, many of these owned and leased properties 
have been operated by third parties or by previous owners or operators whose treatment and disposal of hazardous 
substances, wastes or hydrocarbons was not under our control.  Similarly, the disposal facilities where discarded 
materials are sent are also often operated by third parties whose waste treatment and disposal practices may not be 
adequate.  While we only use what we consider to be reputable disposal facilities, we might not know of a potential 
problem  if  the  disposal  occurred  before  we  acquired  the  property  or  business,  and  if  the  problem  itself  is  not 
discovered  until  years  later.    Our  properties,  adjacent  affected  properties,  the  offsite  disposal  facilities,  and  the 
substances disposed or released on them may be subject to CERCLA and analogous state laws.  Under these laws, 
we could be required: 

• 

• 
• 

• 

to remove or remediate previously disposed materials, including materials disposed or released by 
prior owners or operators or other third parties; 
to clean up contaminated property, including contaminated groundwater;  
to  perform  remedial  operations  to  prevent  future  contamination,  including  the  plugging  and 
abandonment of wells drilled and left inactive by prior owners and operators; or  
to pay some or all of the costs of any such action. 

At this time, we do not believe that we are a potentially responsible party with respect to any Superfund site and we 
have not been notified of any claim, liability or damages under CERCLA. 

Oil Pollution Act.  The Oil Pollution Act of 1990 (“OPA”) and regulations issued under OPA impose strict, joint 
and several liability on “responsible parties” for removal costs and damages resulting from oil spills into or upon 
navigable  waters,  adjoining  shorelines  or  in  the  exclusive  economic  zone  of  the  United  States.    A  “responsible 
party” includes the owner or operator of an onshore facility and the lessee, permittee, or holder of a right of use and 
easement of the area in which an offshore facility is located.  OPA establishes a liability limit for onshore facilities 
of $350.0 million per spill, while the liability limit for offshore facilities is the payment of all removal costs plus 
$75.0  million  per  spill  damages.    These  limits  do  not  apply  if  the  spill  is  caused  by  a  responsible  party’s  gross 
negligence  or  willful  misconduct;  the  spill  resulted  from  a  responsible  party’s  violation  of  a  federal  safety, 
construction or operating regulation; a responsible party fails to report a spill or to cooperate fully in a cleanup; or a 
responsible party fails to comply with an order issued under the authority of the Intervention on the High Seas Act.  
OPA  also  requires  the  lessee  or  permittee  of  the  offshore  area  in  which  a  covered  offshore  facility  is  located  to 
establish and maintain evidence of financial responsibility in the amount of $35.0 million to cover liabilities related 
to an oil spill for which such responsible party is statutorily responsible.  The President may increase the amount of 
financial  responsibility  required  under  OPA  by  up  to  $150.0  million,  depending  on  the  risk  represented  by  the 
quantity  or  quality  of  oil  that  is  handled  by  the  facility.    Any  failure  to  comply  with  OPA’s  requirements  or 
inadequate cooperation during a spill response action may subject a responsible party to administrative penalties up 
to $25,000 per day per violation.  We believe we are in compliance with all applicable OPA financial responsibility 
obligations.  Moreover, we are not aware of any action or event that would subject us to liability under OPA, and 
we believe that compliance with OPA’s financial responsibility and other operating requirements will not have a 
material adverse effect on us. 

 Resource Conservation Recovery Act.  The Resource Conservation and Recovery Act (“RCRA”), and comparable 
state statutes, regulate the generation, transportation, treatment, storage, disposal and cleanup of hazardous and non-
hazardous wastes.  Under the auspices of the EPA, the individual states administer some or all of the provisions of 
RCRA, sometimes in conjunction with their own, more stringent requirements.  We generate solid and hazardous 
wastes that are subject to RCRA and comparable state laws.  Drilling fluids, produced waters and most of the other 
wastes  associated  with  the  exploration,  development  and  production  of  crude  oil  or  natural  gas  are  currently 
regulated under RCRA’s non-hazardous waste provisions.  However, it is possible that certain oil and natural gas 
exploration and production wastes now classified as non-hazardous could be classified as hazardous waste in the 
future. In September 2010, the Natural Resources Defense Council filed a petition with the EPA, requesting them to 

18 

 
 
reconsider the RCRA exemption for exploration, production and development wastes but, to date, the agency has 
not taken any action on the petition.  The EPA has not formally responded to this petition yet.  Any such change in 
the  current  RCRA  exemption  and  comparable  state  laws,  could  result  in  an  increase  in  the  costs  to  manage  and 
dispose  of  wastes.    Additionally,  these  exploration  and  production  wastes  may  be  regulated  by  state  agencies  as 
solid waste.  Also, ordinary industrial wastes, such as paint wastes, waste solvents, laboratory wastes, and waste 
compressor oils, may be regulated as hazardous waste.  Although we do not believe the current costs of managing 
our materials constituting wastes as they are presently classified to be significant, any repeal or modification of the 
oil and gas exploration and production exemption by administrative, legislative or judicial process, or modification 
of similar exemptions in analogous state statutes, would increase the volume of hazardous waste we are required to 
manage and dispose of and would cause us, as well as our competitors, to incur increased operating expenses. 

Clean Water Act.  The Federal Water Pollution Control Act, or the Clean Water Act, as amended (“CWA”), and 
analogous  state  laws  impose  restrictions  and  strict  controls  with  respect  to  the  discharge  of  pollutants,  including 
spills and leaks of oil and other substances, into state waters or other waters of the United States.  The discharge of 
pollutants into regulated waters is prohibited, except in accordance with the terms of a permit issued by the EPA or 
an  analogous state  agency.    Spill  prevention,  control and  countermeasure  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.  In addition, CWA and analogous state laws require 
individual  permits  or  coverage  under  general  permits  for  discharges  of  storm  water  runoff  from  certain  types  of 
facilities.   

The EPA had regulations under the authority of CWA that required certain oil and gas exploration and production 
projects to obtain permits for construction projects with storm water discharges.  However, the Energy Policy Act 
of  2005  nullified  most  of  the  EPA  regulations  that  required  storm  water  permitting  of  oil  and  gas  construction 
projects.  There are still some state and federal rules that regulate the discharge of storm water from some oil and 
gas  construction  projects.    Costs  may  be  associated  with  the  treatment  of  wastewater  and/or  developing  and 
implementing  storm  water  pollution  prevention  plans.    Federal  and  state  regulatory  agencies  can  impose 
administrative,  civil  and  criminal  penalties  for  non-compliance  with  discharge  permits  or  other  requirements  of 
CWA and analogous state laws and regulations.  In Section 40 CFR 112 of the regulations, the EPA promulgated 
the  Spill  Prevention,  Control,  and  Countermeasure  (“SPCC”)  regulations,  which  require  certain  oil  containing 
facilities to prepare plans and meet construction and operating standards.  

Air Emissions.  The federal Clean Air Act (the “CAA”), as amended, and comparable state laws, regulate emissions 
of various air pollutants from various industrial sources through air emissions permitting programs and also impose 
other monitoring and reporting requirements.  We may be required to incur certain capital expenditures in the future 
for  air  pollution  control  equipment  in  connection  with  obtaining  and  maintaining  pre-construction  and  operating 
permits and approvals for air emissions.  In addition, the EPA has developed, and continues to develop, stringent 
regulations governing emissions of toxic air pollutants at specified sources.  For example, on April 17, 2012, the 
EPA finalized rules that would establish new air emission controls for oil and natural gas production operations.  
Specifically,  the  EPA’s  rule  includes  New  Source  Performance  Standards  to  address  emissions  of  sulfur  dioxide 
and  volatile  organic  compounds,  and  a  separate  set  of  emission  standards  to  address  hazardous  air  pollutants 
frequently  associated  with  oil  and  natural  gas  production  and  processing  activities.  Among  other  things,  these 
standards would require the application of reduced emission completion techniques for completion of newly drilled 
and fractured wells in addition to existing wells that are refractured.  The rules also establish specific requirements 
regarding  emissions  from  compressors,  dehydrators,  storage  tanks  and  other  production  equipment.    These  rules 
could  require  a  number  of  modifications  to  operations  at  certain  of  our  oil  and  gas  properties  including  the 
installation  of  new  equipment.    Compliance  with  such  rules  could  result  in  significant  costs, including  increased 
capital expenditures and operating costs, which may adversely impact our business.  Federal and state regulatory 
agencies  can  impose  administrative,  civil  and  criminal  penalties  for  non-compliance  with  air  permits  or  other 
requirements of the CAA and associated state laws and regulations.  

Hydraulic  Fracturing.    Hydraulic  fracturing  is  an  important  and  common  practice  that  is  used  to  stimulate 
production of hydrocarbons, particularly natural gas, from tight formations.  Hydraulic fracturing has been utilized 

19 

 
 
in the completion of wells we have drilled, and we expect it will also be used in the future.  The process involves 
the  injection  of  water,  sand  and  chemicals  under  pressure  into  formations  to  fracture  the  surrounding  rock  and 
stimulate  production.    The  process  is  typically  regulated  by  state  oil  and  gas  commissions.    However,  the  EPA 
recently  took  the  position  that  hydraulic  fracturing  operations  using  diesel  are  subject  to  regulation  under  the 
Underground  Injection  Control  program  of  the  Safe  Drinking  Water  Act  as  Class  II  wells  and  has  commenced 
drafting  guidance  for  permitting  authorities  and  the  industry  regarding  the  process  for  obtaining  a  permit  for 
hydraulic fracturing involving diesel.  Industry groups have filed suit challenging the EPA’s recent decision.  At the 
same  time,  the  EPA  has  commenced  a  study  of  the  potential  environmental  impacts  of  hydraulic  fracturing 
activities on drinking water resources.  The EPA published a progress report of the study in December 2012 and 
expects to release the final results by 2014.  Moreover, the EPA announced in October 2011 that it is also launching 
a study regarding wastewater resulting from hydraulic fracturing activities and currently plans to propose standards 
by 2014 that such wastewater must meet before being transported to a treatment plant.  Other federal agencies are 
also  examining  hydraulic  fracturing,  including  the  U.S.  Department  of  Energy  (“DOE”),  the  U.S.  Government 
Accountability  Office  and  the  White  House  Council  for  Environmental  Quality.    The  U.S.  Department  of  the 
Interior is also considering regulation of hydraulic fracturing activities on public lands.  In addition, the Fracturing 
Responsibility  and  Awareness  of  Chemicals  Act  (“FRAC  Act”)  has  been  introduced  in  Congress  to  provide  for 
federal regulation of hydraulic fracturing and to require disclosure of the chemicals used in the fracturing process.  
Also, some states have adopted, and other states are considering adopting, regulations that could restrict or impose 
additional requirements relating to hydraulic fracturing in certain circumstances.  For example, on June 17, 2011, 
Texas  enacted  a  law  that  requires  the  disclosure  of  information  regarding  the  substances  used  in  the  hydraulic 
fracturing process to the Railroad Commission of Texas (the entity that regulates oil and natural gas production) 
and the public.  Such federal or state legislation could require the disclosure of chemical constituents used in the 
fracturing  process  to  state  or  federal  regulatory  authorities  who  could  then  make  such  information  publicly 
available.    Disclosure  of  chemicals used  in  the  fracturing  process  could  make  it  easier  for third  parties  opposing 
hydraulic fracturing to pursue legal proceedings against producers and service providers based on allegations that 
specific chemicals used in the fracturing process could adversely affect human health or the environment, including 
groundwater.    In  addition,  if  hydraulic  fracturing  is  regulated  at  the  federal  level,  our  fracturing  activities  could 
become  subject  to  additional  permit  requirements  or  operational  restrictions  and  also  to  associated  permitting 
delays and potential increases in costs.  Further, at least three local governments in Texas have imposed temporary 
moratoria on drilling permits within city limits so that local ordinances may be reviewed to assess their adequacy to 
address such activities.  If new laws or regulations that significantly restrict hydraulic fracturing are adopted, such 
legal  requirements  could  make  it  more  difficult  or  costly  for  us  to  perform  hydraulic  fracturing  activities.  
Moreover, we believe that enactment of legislation regulating hydraulic fracturing at the federal level may have a 
material adverse effect on our business. 

Global Warming and Climate Change.  On December 15, 2009, the EPA published its findings that emissions of 
carbon dioxide, methane, and other greenhouse gases (“GHG”) present an endangerment to public health and the 
environment because emissions of such gases are, according to the EPA, contributing to the warming of the earth’s 
atmosphere and other climate changes.  Based on these findings, the EPA has begun adopting and implementing 
regulations  that  restrict  emissions  of  GHG  under  existing  provisions  of  the  CAA,  including  one  rule  that  limits 
emissions of GHG from motor vehicles beginning with the 2012 model year.  The EPA has asserted that these final 
motor  vehicle  GHG  emission  standards  trigger  the  CAA  construction  and  operating  permit  requirements  for 
stationary  sources,  commencing  when  the  motor  vehicle  standards  took  effect  on  January  2,  2011.    On  June  3, 
2010, the EPA published its final rule to address the permitting of GHG emissions from stationary sources under 
the  Prevention  of  Significant  Deterioration  (“PSD”)  and  Title  V  permitting  programs.    This  rule  “tailors”  these 
permitting  programs  to  apply  to  certain  stationary  sources  of  GHG  emissions  in  a  multi-step  process,  with  the 
largest  sources  first  subject  to  permitting.    Further,  facilities  required  to  obtain  PSD  permits  for  their  GHG 
emissions are required to reduce those emissions consistent with guidance for determining “best available control 
technology” standards for GHG, which guidance was published by the EPA in November 2010.  Also in November 
2010,  the  EPA  expanded  its  existing  GHG  reporting  rule  to  include  onshore  oil  and  natural  gas  production, 
processing, transmission, storage, and distribution facilities.  This rule requires reporting of GHG emissions from 
such facilities on an annual basis with reporting beginning in 2012 for emissions occurring in 2011.  We believe 

20 

 
 
that we are in compliance with all substantial applicable emissions requirements, and we are preparing to comply 
with future requirements. 

In addition, both houses of Congress have considered legislation to reduce emissions of GHG, and many states have 
already taken legal measures to reduce emissions of GHG, primarily through the development of GHG inventories, 
greenhouse gas permitting and/or regional GHG cap and trade programs.  Most of these cap and trade programs 
work by requiring either major sources of emissions or major producers of fuels to acquire and surrender emission 
allowances,  with  the  number  of  allowances  available  for  purchase  reduced  each  year  until  the  overall  GHG 
emission  reduction  goal  is  achieved.    In  the  absence  of  new  legislation,  the  EPA  is  issuing  new  regulations  that 
limit emissions of GHG associated with our operations which will require us to incur costs to inventory and reduce 
emissions of GHG associated with our operations and which could adversely affect demand for the oil and natural 
gas that we produce.  Finally, it should be noted that some scientists have concluded that increasing concentrations 
of GHG in the atmosphere may produce climate changes that have significant physical effects, such as increased 
frequency and severity of storms, droughts, floods and other climatic events.  

Consideration  of  Environmental  Issues  in  Connection  with  Governmental  Approvals.    Our  operations  frequently 
require  licenses,  permits  and/or  other  governmental  approvals.    Several  federal  statutes,  including  the  Outer 
Continental Shelf Lands Act (“OCSLA”), the National Environmental Policy Act (“NEPA”), and the Coastal Zone 
Management Act (“CZMA”) require federal agencies to evaluate environmental issues in connection with granting 
such approvals and/or taking other major agency actions.  OCSLA, for instance, requires the U.S. Department of 
Interior to evaluate whether certain proposed activities would cause serious harm or damage to the marine, coastal 
or human environment.  Similarly, NEPA requires the Department of Interior and other federal agencies to evaluate 
major  agency  actions  having  the  potential  to  significantly  impact  the  environment.    In  the  course  of  such 
evaluations,  an  agency  would  have  to  prepare  an  environmental  assessment  and,  potentially,  an  environmental 
impact  statement.    The  CZMA,  on  the  other  hand,  aids  states  in  developing  a  coastal  management  program  to 
protect the coastal environment from growing demands associated with various uses, including offshore oil and gas 
development.  In obtaining various approvals from the Department of Interior, we must certify that we will conduct 
our activities in a manner consistent with all applicable regulations. 

Employees 

As  of  December  31,  2012,  we  had  829  full-time  employees,  including  33  senior  level  geoscientists  and  71 
petroleum engineers.  Our employees are not represented by any labor unions.  We consider our relations with our 
employees to be satisfactory and have never experienced a work stoppage or strike. 

Available Information 

We maintain a website at the address www.whiting.com.  We are not including the information contained on our 
website as part of, or incorporating it by reference into, this report.  We make available free of charge (other than an 
investor’s own Internet access charges) through our website our Annual Report on Form 10-K, quarterly reports on 
Form  10-Q  and  current  reports  on  Form  8-K,  exhibits  and  amendments  to  these  reports,  as  soon  as  reasonably 
practicable after we electronically file such material with, or furnish such material to, the Securities and Exchange 
Commission. 

21 

 
 
Item 1A.  Risk Factors 

Each  of  the  risks  described  below  should  be  carefully  considered,  together  with  all  of  the  other  information 
contained in this Annual Report on Form 10-K, before making an investment decision with respect to our securities.  
If any of the following risks develop into actual events, our business, financial condition or results of operations 
could be materially and adversely affected, and you may lose all or part of your investment. 

Oil and natural gas prices are very volatile.  An extended period of low oil and natural gas prices may adversely 
affect our business, financial condition, results of operations or cash flows. 

The oil and gas markets are very volatile, and we cannot predict future oil and natural gas prices.  The price we 
receive for our oil, NGL and natural gas production heavily influences our revenue, profitability, access to capital 
and  future  rate  of  growth.    The  prices  we  receive  for  our  production  depend  on  numerous  factors  beyond  our 
control.  These factors include, but are not limited to, the following:  

•     changes in regional, domestic and global supply and demand for oil and natural gas;  
•     the actions of the Organization of Petroleum Exporting Countries;  
•     the price and quantity of imports of foreign oil and natural gas;  
•     political  and  economic  conditions,  including  embargoes,  in  oil-producing  countries  or  affecting  other  oil-

producing activity, such as recent conflicts in the Middle East;  

•     the level of global oil and natural gas exploration and production activity;  
•     the effects of global credit, financial and economic issues; 
•     the level of global oil and natural gas inventories;  
•     developments of United States energy infrastructure, such as the recent announcement of the planned reversal 
of the Seaway pipeline from Cushing, Oklahoma to the Gulf Coast and the development of liquefied natural 
gas exporting facilities and the perceived timing thereof; 

•     weather conditions;  
•     technological advances affecting energy consumption;  
•     domestic and foreign governmental regulations;  
•     proximity and capacity of oil and natural gas pipelines and other transportation facilities;  
•     the price and availability of competitors’ supplies of oil and natural gas in captive market areas;   
•     the price and availability of alternative fuels; and 
•    acts of force majeure. 

Moreover,  government  regulations,  such  as  regulation  of  oil  and  natural  gas  gathering  and  transportation,  can 
adversely affect commodity prices in the long term. 

Lower  oil,  NGL  and  natural  gas  prices  may  not  only  decrease  our  revenues  on  a  per  unit  basis  but  also  may 
ultimately  reduce  the  amount  of  oil  and  natural  gas  that  we  can  produce  economically  and  therefore  potentially 
lower  our  reserve  quantities.    A  substantial  or  extended  decline  in  oil,  NGL  or  natural  gas  prices  may  result  in 
impairments  of  our  proved  oil  and  gas  properties  and  may  materially  and  adversely  affect  our  future  business, 
financial condition, results of operations, liquidity or ability to finance planned capital expenditures.  To the extent 
commodity  prices  received  from  production  are  insufficient  to  fund  planned  capital  expenditures,  we  will  be 
required to reduce spending or borrow any such shortfall.  Lower oil, NGL and natural gas prices may also reduce 
the amount of our borrowing base under our credit agreement, which is determined at the discretion of the lenders 
based  on  the  collateral  value  of  our  proved  reserves  that  have  been  mortgaged  to  the  lenders,  and  is  subject  to 
regular redeterminations on May 1 and November 1 of each year, as well as special redeterminations described in 
the credit agreement. 

22 

 
 
 
Drilling  for  and  producing  oil  and  natural  gas  are  high  risk  activities  with  many  uncertainties  that  could 
adversely affect our business, financial condition or results of operations. 

Our  future  success  will  depend  on  the  success  of  our  development,  exploitation,  production  and  exploration 
activities.  Our oil and natural gas exploration and production activities are subject to numerous risks beyond our 
control, including  the  risk  that  drilling  will  not  result  in  commercially  viable  oil  or  natural  gas  production.    Our 
decisions  to  purchase,  explore,  develop  or  otherwise  exploit  prospects  or  properties  will  depend  in  part  on  the 
evaluation of data obtained through geophysical and geological analyses, production data and engineering studies, 
the results of which are often inconclusive or subject to varying interpretations.  Please read “— Reserve estimates 
depend on many assumptions that may turn out to be inaccurate...” later in these Risk Factors for a discussion of the 
uncertainty  involved  in  these  processes.    Our  cost  of  drilling,  completing  and  operating  wells  is  often  uncertain 
before drilling commences.  Overruns in budgeted expenditures are common risks that can make a particular project 
uneconomical.  Further, many factors may curtail, delay or cancel drilling, including the following: 

•     delays imposed by or resulting from compliance with regulatory requirements;  
•     pressure or irregularities in geological formations;  
•     shortages  of  or  delays  in  obtaining  qualified  personnel  or  equipment,  including  drilling  rigs,  completion 

services and CO2;  

•     equipment failures or accidents;  
•     adverse weather conditions, such as freezing temperatures, hurricanes and storms;  
•     reductions in oil, NGL and natural gas prices;   
•    pipeline takeaway and refining and processing capacity; and 
•     title problems. 

Federal and state legislative and regulatory initiatives relating to hydraulic fracturing could result in increased 
costs and additional operating restrictions or delays. 

Hydraulic  fracturing  is  an  important  and  common  practice  that  is  used  to  stimulate  production  of  hydrocarbons 
from  tight  formations.    The  process  involves  the  injection  of  water,  sand  and  chemicals  under  pressure  into 
formations  to  fracture  the  surrounding  rock  and  stimulate  production.    Hydraulic  fracturing  has  been  utilized  to 
complete wells in our most active areas located in the states of Colorado, Michigan, Montana, North Dakota and 
Texas, and we expect it will also be used in the future.  Should our exploration and production activities expand to 
other states, it is likely that we will utilize hydraulic fracturing to complete or recomplete wells in those areas.  The 
process is typically regulated by state oil and gas commissions.  However, the EPA has asserted federal regulatory 
authority  over  hydraulic  fracturing  involving  diesel  under  the  Safe  Drinking  Water  Act’s  Underground  Injection 
Control  Program  and  has  commenced  drafting  guidance  for  permitting  authorities  and  the  industry  regarding  the 
process for obtaining a permit for hydraulic fracturing involving diesel.  Industry groups have filed suit challenging 
the EPA’s recent decision.   

At the same time, the EPA has commenced a study of the potential environmental impacts of hydraulic fracturing 
activities on drinking water resources.  The EPA published a progress report of the study in December 2012 and 
expects to release the final results by 2014.  Moreover, the EPA announced in October 2011 that it is also launching 
a study regarding wastewater resulting from hydraulic fracturing activities and currently plans to propose standards 
by 2014 that such wastewater must meet before being transported to a treatment plant.  Other federal agencies are 
also examining hydraulic fracturing, including the DOE, the U.S. Government Accountability Office and the White 
House Council for Environmental Quality.  The U.S. Department of the Interior is also considering regulation of 
hydraulic fracturing activities on public lands.  In addition, legislation called the FRAC Act has been introduced in 
Congress to provide for federal regulation of hydraulic fracturing and to require disclosure of the chemicals used in 
the fracturing process.  Also, some states have adopted, and other states are considering adopting, regulations that 
could  restrict  or  impose  additional  requirements  relating  to  hydraulic  fracturing  in  certain  circumstances.    For 
example, on June 17, 2011, Texas enacted a law that requires the disclosure of information regarding the substances 
used  in  the  hydraulic  fracturing  process  to  the  Railroad  Commission  of  Texas  (the  entity  that  regulates  oil  and 
natural gas production) and the public.  Such federal or state legislation could require the disclosure of chemical 

23 

 
 
 
constituents  used  in  the  fracturing  process  to  state  or  federal  regulatory  authorities  who  could  then  make  such 
information publicly available.  Disclosure of chemicals used in the fracturing process could make it easier for third 
parties opposing hydraulic fracturing to pursue legal proceedings against producers and service providers based on 
allegations  that  specific  chemicals  used  in  the  fracturing  process  could  adversely  affect  human  health  or  the 
environment  including  groundwater.    In  addition,  if  hydraulic  fracturing  is  regulated  at  the  federal  level,  our 
fracturing activities could become subject to additional permit requirements or operational restrictions and also to 
associated  permitting  delays,  litigation  risk  and  potential  increases  in  costs.    Further,  at  least  three  local 
governments  in  Texas  have  imposed  temporary  moratoria  on  drilling  permits  within  city  limits  so  that  local 
ordinances may be reviewed to assess their adequacy to address such activities.  No assurance can be given as to 
whether or not similar measures might be considered or implemented in the jurisdictions in which our properties are 
located.  If new laws or regulations that significantly restrict or otherwise impact hydraulic fracturing are passed by 
Congress  or  adopted  in  the  states  where  our  properties  are  located,  such  legal  requirements  could  make  it  more 
difficult  or  costly  for  us  to  perform  hydraulic  fracturing  activities  and  thereby  could  affect  the  determination  of 
whether a well is commercially viable.  In addition, restrictions on hydraulic fracturing could reduce the amount of 
oil and natural gas that we are ultimately able to produce in commercially paying quantities. 

Our use of enhanced recovery methods creates uncertainties that could adversely affect our results of operations 
and financial condition. 

One of our business strategies is to commercially develop oil reservoirs using enhanced recovery technologies.  For 
example, we inject water and CO2 into formations on some of our properties to increase the production of oil and 
natural gas.  The additional production and reserves attributable to the use of these enhanced recovery methods are 
inherently difficult to predict.  If our enhanced recovery programs do not allow for the extraction of oil and gas in 
the  manner  or  to  the  extent  that  we  anticipate,  our  future  results  of  operations  and  financial  condition  could  be 
materially adversely affected.  Additionally, our ability to utilize CO2 as an enhanced recovery technique is subject 
to our ability to obtain sufficient quantities of CO2.  Under our CO2 contracts, if the supplier suffers an inability to 
deliver its contractually required quantities of CO2 to us and other parties with whom it has CO2 contracts, then the 
supplier may reduce the amount of CO2 on a pro rata basis it provides to us and such other parties.  If this occurs or 
if we are otherwise limited in the quantities of CO2 available to us, we may not have sufficient CO2 to produce oil 
and  natural  gas  in  the  manner  or to the  extent that  we  anticipate,  and  our  future  oil and  gas  production  volumes 
could be negatively impacted.  These contracts are also structured as “take-or-pay” arrangements, which require us 
to  continue  to  make  payments  even  if  we  decide  to  terminate  or  reduce  our  use  of  CO2  as  part  of  our  enhanced 
recovery techniques. 

The  development  of  the  proved  undeveloped  reserves  in the  North Ward  Estes  field may take longer  and may 
require higher levels of capital expenditures than we currently anticipate.   

As  of  December 31,  2012,  proved  undeveloped  reserves  comprised  43%  of  the  North  Ward  Estes  field’s  total 
estimated  proved  reserves.    To  fully  develop  these  reserves,  we  expect  to  incur  future  development  costs  of 
$750.0 million at the North Ward Estes field as of December 31, 2012.  This field encompasses 28% of our total 
estimated future development costs related to proved undeveloped reserves.  Development of these reserves may 
take  longer  and  require  higher  levels  of  capital  expenditures  than  we  currently  anticipate.    In  addition,  the 
development of these reserves will require the use of enhanced recovery techniques, including water flood and CO2 
injection installations, the success of which is less predictable than traditional development techniques. 

Prospects that we decide to drill may not yield oil or gas in commercially viable quantities. 

We  describe  some  of  our  current  prospects  and  our  plans  to  explore  those  prospects  in  this  Annual  Report  on 
Form 10-K.    A  prospect  is  a  property  on  which  we  have  identified  what  our  geoscientists  believe,  based  on 
available seismic and geological information, to be indications of oil or gas.  Our prospects are in various stages of 
evaluation,  ranging  from  a  prospect  which  is  ready  to  drill  to  a  prospect  that  will  require  substantial  additional 
seismic data processing and interpretation.  There is no way to predict in advance of drilling and testing whether 
any particular prospect will yield oil or gas in sufficient quantities to recover drilling or completion costs or to be 

24 

 
 
economically viable.  The use of seismic data and other technologies and the study of producing fields in the same 
area  will  not  enable  us  to  know  conclusively  prior  to  drilling  whether  oil  or  gas  will  be  present  or,  if  present, 
whether oil or gas will be present in commercial quantities.  In addition, because of the wide variance that results 
from  different  equipment  used  to  test  the  wells,  initial  flow  rates  may  not  be  indicative  of  sufficient  oil  or  gas 
quantities  in  a  particular  field.    The  analogies  we  draw  from  available  data  from  other  wells,  from  more  fully 
explored prospects, or from producing fields may not be applicable to our drilling prospects.  We may terminate our 
drilling program for a prospect if results do not merit further investment. 

If oil, NGL and natural gas prices decrease, we may be required to take write-downs of the carrying values of 
our oil and gas properties. 

Accounting rules require that we periodically review the carrying value of our producing oil and gas properties for 
possible  impairment.    Based  on  specific  market  factors  and  circumstances  at the  time  of  prospective  impairment 
reviews,  which  may  include  depressed  oil,  NGL  and  natural  gas  prices,  and  the  continuing  evaluation  of 
development plans, production data, economics and other factors, we may be required to write down the carrying 
value of our oil and gas properties.  For example, we recorded a $3.2 million impairment write-down during 2011 
for the partial impairment of producing properties, primarily natural gas, in California and Michigan.  A write-down 
constitutes a non-cash charge to earnings.  We may incur additional impairment charges in the future, which could 
have a material adverse effect on our results of operations in the period recognized. 

Reserve estimates depend on many assumptions that may turn out to be inaccurate.  Any material inaccuracies 
in  these  reserve  estimates or  underlying assumptions  will materially  affect the  quantities  and  present value  of 
our reserves. 

The process of estimating oil and natural gas reserves is complex.  It requires interpretations of available technical 
data and many assumptions, including assumptions relating to economic factors.  Any significant inaccuracies in 
these interpretations or assumptions could materially affect the estimated quantities and present value of reserves 
referred to in this Annual Report on Form 10-K. 

In order to prepare our estimates, we must project production rates and timing of development expenditures.  We 
must  also  analyze  available  geological,  geophysical,  production  and  engineering  data.    The  extent,  quality  and 
reliability  of  this  data  can  vary.    The  process  also  requires  economic  assumptions  about  matters  such  as  the 
following: 

•     historical production from the area compared with production rates from other producing areas; 
•     the assumed effect of governmental regulation; and 
•     assumptions  about  future  prices  of  oil,  NGLs  and  natural  gas  including  differentials,  production  and 
development  costs,  gathering  and  transportation  costs,  severance  and  excise  taxes,  capital  expenditures  and 
availability of funds. 

Therefore, estimates of oil and natural gas reserves are inherently imprecise.  Actual future production; oil, NGL 
and  natural  gas  prices;  revenues;  taxes;  exploration  and  development  expenditures;  operating  expenses;  and 
quantities  of  recoverable  oil  and  natural  gas  reserves,  most  likely  will  vary  from  our  estimates.    Any  significant 
variance  could  materially  affect  the  estimated  quantities  and  present  value  of  reserves  referred  to  in  this  Annual 
Report on Form 10-K.  In addition, we may adjust estimates of proved reserves to reflect production history, results 
of exploration and development, prevailing oil and natural gas prices and other factors, many of which are beyond 
our control. 

You should not assume that the present value of future net revenues from our proved reserves, as referred to in this 
report, is the current market value of our estimated proved oil and natural gas reserves.  In accordance with SEC 
requirements,  we  base  the  estimated  discounted  future  net  cash  flows  from  our  proved  reserves  on  12-month 
average prices and current costs as of the date of the estimate.  Actual future prices and costs may differ materially 
from those used in the estimate.  If natural gas prices decline by $0.10 per Mcf, then the standardized measure of 

25 

 
 
 
discounted future net cash flows of our estimated proved reserves as of December 31, 2012 would have decreased 
from $5,407.0 million to $5,398.9 million.  If oil prices decline by $1.00 per Bbl, then the standardized measure of 
discounted future net cash flows of our estimated proved reserves as of December 31, 2012 would have decreased 
from $5,407.0 million to $5,312.0 million. 

Risks  associated  with  the  production,  gathering,  transportation  and  sale  of  oil,  NGLs  and  natural  gas  could 
adversely affect net income and cash flows.  

Our net income and cash flows will depend upon, among other things, oil, NGL and natural gas production and the 
prices and costs incurred to exploit oil and natural gas reserves.  Drilling, production or transportation accidents that 
temporarily or permanently halt the production and sale of oil, NGLs and natural gas will decrease revenues and 
increase expenditures.  For example, accidents may occur that result in personal injuries, property damage, damage 
to  productive  formations  or  equipment  and  environmental  damages.    Any  costs  incurred  in  connection  with  any 
such  accidents  that  are  not  insured  against  will  have  the  effect  of  reducing  net  income.    Also,  we  do  not  have 
insurance  policies in  effect  that  are intended to  provide  coverage for  losses  solely  related  to  hydraulic  fracturing 
operations.    Please  read  “— Federal  and  state  legislative  and  regulatory  initiatives  relating  to  hydraulic 
fracturing...” above in these Risk Factors for a discussion of the uncertainty involved in the practice of hydraulic 
fracturing.  In addition, curtailments or damage to pipelines used to transport oil, NGLs and natural gas production 
to markets for sale could decrease revenues or increase transportation expenses.  Any such curtailment or damage 
to  the  gathering  systems  could  also  require  finding  alternative  means  to  transport  the  oil,  NGLs  and  natural  gas 
production,  which  alternative  means  could  result  in  additional  costs  that  will  have  the  effect  of  increasing 
transportation expenses.  

Also, drilling, production and transportation of hydrocarbons bear an inherent risk of loss of containment.  Potential 
consequences  include  loss  of  reserves,  loss  of  production,  loss  of  economic  value  associated  with  the  affected 
wellbore, contamination of soil, ground water, and surface water, as well as potential fines, penalties or damages 
associated with any of the foregoing consequences.  

Our  debt level and the covenants in  the  agreements  governing  our  debt  could  negatively  impact  our  financial 
condition, results of operations, cash flows and business prospects. 

As of December 31, 2012, we had $1,200.0 million in borrowings and $2.4 million in letters of credit outstanding 
under Whiting Oil and Gas Corporation’s credit agreement with $797.6 million of available borrowing capacity, as 
well as $600.0 million of senior subordinated notes outstanding.  We are permitted to incur additional indebtedness, 
provided we meet certain requirements in the indentures governing our senior subordinated notes and Whiting Oil 
and Gas Corporation’s credit agreement. 

Our level of indebtedness and the covenants contained in the agreements governing our debt could have important 
consequences for our operations, including: 

•     requiring us to dedicate a substantial portion of our cash flow from operations to required payments on debt, 
thereby  reducing  the  availability  of  cash  flow  for  working  capital,  capital  expenditures  and  other  general 
business activities;  

•     limiting  our  ability  to  obtain  additional  financing  in  the  future  for  working  capital,  capital  expenditures, 

acquisitions and general corporate and other activities;  

•     limiting our flexibility in planning for, or reacting to, changes in our business and the industry in which we 

operate;  

•     placing us at a competitive disadvantage relative to other less leveraged competitors; 
•     making  us  vulnerable  to  increases  in  interest  rates,  because  debt  under  Whiting  Oil  and  Gas  Corporation’s 

credit agreement is subject to certain rate variability; and  

•     potentially limiting our ability to pay dividends in cash on our convertible perpetual preferred stock. 

26 

 
 
 
We may be required to repay all or a portion of our debt on an accelerated basis in certain circumstances.  If we fail 
to comply with the covenants and other restrictions in the agreements governing our debt, it could lead to an event 
of  default  and the  acceleration  of  our repayment  of  outstanding  debt.   In  addition,  if  we  are in  default  under the 
agreements governing our indebtedness, we will not be able to pay dividends on our capital stock.  Our ability to 
comply  with  these  covenants  and  other  restrictions  may  be  affected  by  events  beyond  our  control,  including 
prevailing  economic  and financial conditions.    Moreover,  the borrowing  base  limitation  on Whiting  Oil  and  Gas 
Corporation’s  credit  agreement  is  periodically  redetermined  based  on  an  evaluation  of  our  oil  and  gas  reserves.  
Upon a redetermination, if borrowings in excess of the revised borrowing capacity were outstanding, we could be 
forced to immediately repay a portion of our debt under the credit agreement. 

We  may  not  have  sufficient  funds to  make  such  repayments.    If  we  are  unable  to  repay  our  debt out  of  cash  on 
hand,  we  could  attempt  to  refinance  such  debt,  sell  assets  or  repay  such  debt  with  the  proceeds  from  an  equity 
offering.  We may not be able to generate sufficient cash flow to pay the interest on our debt or future borrowings, 
and equity financings or proceeds from the sale of assets may not be available to pay or refinance such debt.  The 
terms of our debt, including Whiting Oil and Gas Corporation’s credit agreement, may also prohibit us from taking 
such actions.  Factors that will affect our ability to raise cash through an offering of our capital stock, a refinancing 
of our debt or a sale of assets include financial market conditions and our market value and operating performance 
at the time of such offering or other financing.  We may not be able to successfully complete any such offering, 
refinancing or sale of assets. 

The  instruments  governing  our  indebtedness  contain  various  covenants  limiting  the  discretion  of  our 
management in operating our business. 

The indentures governing our senior subordinated notes and Whiting Oil and Gas Corporation’s credit agreement 
contain various restrictive covenants that may limit our management’s discretion in certain respects.  In particular, 
these agreements will limit our and our subsidiaries’ ability to, among other things: 

•     pay dividends on, redeem or repurchase our capital stock or redeem or repurchase our subordinated debt;  
•     make loans to others;  
•     make investments;  
•     incur additional indebtedness or issue preferred stock; 
•     create certain liens; 
•     sell assets; 
•     enter into agreements that restrict dividends or other payments from our restricted subsidiaries to us; 
•     consolidate, merge or transfer all or substantially all of our assets and those of our restricted subsidiaries taken 

as a whole; 

•     engage in transactions with affiliates; 
•     enter into hedging contracts; 
•     create unrestricted subsidiaries; and  
•     enter into sale and leaseback transactions. 

In addition, Whiting Oil and Gas Corporation’s credit agreement requires us, as of the last day of any quarter, (i) to 
not exceed a total debt to the last four quarters’ EBITDAX ratio (as defined in the credit agreement) of 4.25 to 1.0 
for quarters ending prior to and on December 31, 2012 and 4.0 to 1.0 for the quarters ending March 31, 2013 and 
thereafter  and  (ii)  to  have  a  consolidated  current  assets  to  consolidated  current  liabilities  ratio  (as  defined  in  the 
credit agreement and which includes an add back of the available borrowing capacity under the credit agreement) of 
not less than 1.0 to 1.0. Also, the indentures under which we issued our senior subordinated notes restrict us from 
incurring additional indebtedness, subject to certain exceptions, unless our fixed charge coverage ratio (as defined 
in the indentures) is at least 2.0 to 1.  If we were in violation of these covenants, then we may not be able to incur 

27 

 
 
 
additional  indebtedness,  including  under  Whiting  Oil  and  Gas  Corporation’s  credit  agreement.    A  substantial  or 
extended decline in oil or natural gas prices may adversely affect our ability to comply with these covenants. 

If we fail to comply with the restrictions in the indentures governing our senior subordinated notes or Whiting Oil 
and  Gas  Corporation’s  credit  agreement  or  any  other  subsequent  financing  agreements,  a  default  may  allow  the 
creditors, if the agreements so provide, to accelerate the related indebtedness as well as any other indebtedness to 
which  a  cross-acceleration  or  cross-default  provision  applies.    In  addition,  lenders  may  be  able  to  terminate  any 
commitments  they  had  made  to  make  further  funds  available  to  us.    Furthermore,  if  we  are  in  default  under  the 
agreements governing our indebtedness, we will not be able to pay dividends on our capital stock. 

Our exploration and development operations require substantial capital, and we may be unable to obtain needed 
capital or financing on satisfactory terms, which could lead to a loss of properties and a decline in our oil and 
natural gas reserves. 

The  oil  and  gas  industry  is  capital  intensive.    We  make  and  expect  to  continue  to  make  substantial  capital 
expenditures in our business and operations for the exploration, development, production and acquisition of oil and 
natural  gas  reserves.    To  date,  we  have  financed  capital  expenditures  through  a  combination  of  equity  and  debt 
issuances, bank borrowings and internally generated cash flows.  We intend to finance future capital expenditures 
with cash flow from operations, existing financing arrangements and certain oil and gas divestitures.  Our cash flow 
from operations and access to capital is subject to a number of variables, including: 

•     our proved reserves;  
•     the level of oil and natural gas we are able to produce from existing wells;  
•     the prices at which oil and natural gas are sold;  
•     the costs of producing oil and natural gas; and  
•     our ability to acquire, locate and produce new reserves. 

If our revenues or the borrowing base under our bank credit agreement decreases as a result of lower oil and natural 
gas prices, operating difficulties, declines in reserves, or for any other reason, then we may have limited ability to 
obtain the capital necessary to sustain our operations at current levels.   

We may, from time to time, need to seek additional financing.  There can be no assurance as to the availability or 
terms  of  any  additional  financing.    If  additional  capital  is  needed,  we  may  not  be  able  to  obtain  debt  or  equity 
financing on terms favorable to us, or at all.  If cash generated by operations or available under our revolving credit 
facility is not sufficient to meet our capital requirements, the failure to obtain additional financing could result in a 
curtailment of our operations relating to the exploration and development of our prospects, which in turn could lead 
to a possible loss of properties and a decline in our oil and natural gas reserves. 

The global recession and tight financial markets may have impacts on our business and financial condition that 
we currently cannot predict. 

The  current  global  recession  and  tight  credit  financial  markets  may  have  an  impact  on  our  business  and  our 
financial condition, and we may face challenges if conditions in the financial markets do not improve.  Our ability 
to access the capital markets may be restricted at a time  when we would like, or need, to raise financing, which 
could  have  an  impact  on  our  flexibility  to  react  to  changing  economic  and  business  conditions.    The  economic 
situation could  have  an impact on  our  lenders  or  customers,  causing  them  to  fail  to  meet their  obligations to  us.  
Additionally,  market  conditions  could  have  an  impact  on  our  commodity  hedging  arrangements  if  our 
counterparties are unable to perform their obligations or seek bankruptcy protection. 

28 

 
 
 
Our acquisition activities may not be successful. 

As part of our growth strategy, we have made and may continue to make acquisitions of businesses and properties.  
However,  suitable  acquisition  candidates  may  not  continue  to  be  available  on  terms  and  conditions  we  find 
acceptable, and acquisitions pose substantial risks to our business, financial condition and results of operations.  In 
pursuing acquisitions, we compete with other companies, many of which have greater financial and other resources 
to acquire attractive companies and properties.  The following are some of the risks associated with acquisitions, 
including any completed or future acquisitions: 

•     some  of  the  acquired  businesses  or  properties  may  not  produce  revenues,  reserves,  earnings  or  cash  flow  at 

anticipated levels;  

•     we may assume liabilities that were not disclosed to us or that exceed our estimates;  
•     we may be unable to integrate acquired businesses successfully and realize anticipated economic, operational 
and other benefits in a timely manner, which could result in substantial costs and delays or other operational, 
technical or financial problems;  

•     acquisitions could disrupt our ongoing business, distract management, divert resources and make it difficult to 

maintain our current business standards, controls and procedures; and  

•     we may issue additional equity or debt securities related to future acquisitions.   

Substantial  acquisitions  or  other transactions  could  require  significant  external  capital  and could  change  our 
risk and property profile. 

In order to finance acquisitions of additional producing or undeveloped properties, we may need to alter or increase 
our capitalization substantially through the issuance of debt or equity securities, the sale of production payments or 
other  means.    These  changes  in  capitalization  may  significantly  affect  our  risk  profile.    Additionally,  significant 
acquisitions or other transactions can change the character of our operations and business.  The character of the new 
properties may be substantially different in operating or geological characteristics or geographic location than our 
existing properties.  Furthermore, we may not be able to obtain external funding for additional future acquisitions or 
other transactions or to obtain external funding on terms acceptable to us. 

The unavailability or high cost of additional drilling rigs, equipment, supplies, personnel and oil field services 
could adversely affect our ability to execute our exploration and development plans on a timely basis or within 
our budget. 

The  demand  for  qualified  and  experienced  field  personnel  to  conduct  field  operations,  geologists,  geophysicists, 
engineers and other professionals in the oil and natural gas industry can fluctuate significantly, often in correlation 
with oil and natural gas prices, causing periodic shortages.  Historically, there have been shortages of drilling rigs 
and other oilfield equipment as demand for rigs and equipment has increased along with the number of wells being 
drilled.  These factors also cause significant increases in costs for equipment, services and personnel.  Higher oil 
and  natural  gas  prices  generally  stimulate  demand  and  result  in  increased  prices  for  drilling  rigs,  crews  and 
associated  supplies,  equipment  and  services.    Additionally,  our  operations  in  some  instances  require  supply 
materials such as CO2 for production which could become subject to shortage and increasing costs.  Shortages of 
field personnel, drilling rigs, equipment, supplies or personnel or price increases could delay or adversely affect our 
exploration  and  development  operations,  which  could  have  a  material  adverse  effect  on  our  business,  financial 
condition, results of operations or cash flows, or restrict operations.  

Our identified drilling locations are scheduled out over several years, making them susceptible to uncertainties 
that could materially alter the occurrence or timing of their drilling. 

We have specifically identified and scheduled drilling locations as an estimation of our future multi-year drilling 
activities  on  our  existing  acreage.    As  of  December 31,  2012,  we  had  identified  a  drilling  inventory  of  over 
2,400 gross drilling locations.  These scheduled drilling locations represent a significant part of our growth strategy.  

29 

 
 
Our ability to drill and develop these locations depends on a number of uncertainties, including oil and natural gas 
prices,  the  availability  of  capital,  costs  of  oil  field  goods  and  services,  drilling  results,  ability  to  extend  drilling 
acreage leases beyond expiration, regulatory approvals and other factors.  Because of these uncertainties, we do not 
know  if  the  numerous  potential  drilling  locations  we have  identified  will  ever  be  drilled or if  we  will be  able to 
produce oil or gas from these or any other potential drilling locations.  As such, our actual drilling activities may 
materially differ from those presently identified, which could adversely affect our business. 

We have been an early entrant into new or emerging plays.  As a result, our drilling results in these areas are 
uncertain,  and  the  value  of  our  undeveloped  acreage  may  decline,  and  we  may  incur  impairment  charges  if 
drilling results are unsuccessful. 

While our costs to acquire undeveloped acreage in new or emerging plays have generally been less than those of 
later entrants into a developing play, our drilling results in these areas are more uncertain than drilling results in 
areas that are developed and producing.  Since new or emerging plays have limited or no production history, we are 
unable to use past drilling results in those areas to help predict our future drilling results.  Therefore, our cost of 
drilling, completing and operating wells in these areas may be higher than initially expected, and the value of our 
undeveloped  acreage  will  decline  if  drilling  results  are  unsuccessful.    Furthermore,  if  drilling  results  are 
unsuccessful, we may be required to write down the carrying value of our undeveloped acreage in new or emerging 
plays.    For  example,  during  the  fourth  quarter  of  2010,  we  recorded  a  $5.8 million  non-cash  charge  for  the 
impairment of unproved properties in the central Utah Hingeline play.  We may also incur such impairment charges 
in  the  future,  which  could  have  a  material  adverse  effect  on  our  results  of  operations  in  the  period  taken.  
Additionally, our rights to develop a portion of our undeveloped acreage may expire if not successfully developed 
or renewed.  See “Acreage” in Item 2 of this Annual Report on Form 10-K for  more information relating to the 
expiration of our rights to develop undeveloped acreage. 

Properties that we acquire may not produce as projected, and we may be unable to identify liabilities associated 
with the properties or obtain indemnities from sellers for liabilities they may have created. 

Our  business  strategy  includes  a  continuing  acquisition  program.    From  2004  through  2012,  we  completed  16 
separate  significant  acquisitions  of  producing  properties  with  a  combined  purchase  price  of  $1,900.3 million  for 
estimated  proved  reserves  as  of  the  effective  dates  of  the  acquisitions  of  230.9 MMBOE.    The  successful 
acquisition of producing properties requires assessments of many factors, which are inherently inexact and may be 
inaccurate, including the following: 

•     the amount of recoverable reserves;  
•     future oil and natural gas prices;  
•     estimates of operating costs;  
•     estimates of future development costs;  
•     timing of future development costs;  
•     estimates of the costs and timing of plugging and abandonment; and  
•     potential environmental and other liabilities.   

Our assessment will not reveal all existing or potential problems, nor will it permit us to become familiar enough 
with the properties to assess fully their capabilities and deficiencies.  In the course of our due diligence, we may not 
inspect  every  well,  platform,  facility  or  pipeline.    Inspections  may  not  reveal  structural  and  environmental 
problems, such as pipeline corrosion or groundwater contamination, when they are made.  We may not be able to 
obtain contractual indemnities from the seller for liabilities that it created.  We may be required to assume the risk 
of the physical condition of the properties in addition to the risk that the properties may not perform in accordance 
with our expectations. 

30 

 
 
 
Our use of oil and natural gas price hedging contracts involves credit risk and may limit higher revenues in the 
future  in  connection  with  commodity  price  increases  and  may  result  in  significant  fluctuations  in  our  net 
income. 

We  enter  into  hedging  transactions  of  our  oil  and  natural  gas  production  revenues  to  reduce  our  exposure  to 
fluctuations  in  the  price  of  oil  and  natural  gas.    Our  hedging  transactions  to  date  have  consisted  of  financially 
settled  crude  oil  and  natural  gas  forward  sales  contracts,  primarily  costless  collars,  placed  with  major  financial 
institutions.  As of February 6, 2013, we had contracts, which include our 10% share of the Whiting USA Trust II 
hedges, covering the sale of between 1,044,340 and 1,334,550 barrels of oil per month for all of 2013.  All of our 
oil  hedges  will  expire  by  December  2014.    See  “Quantitative  and  Qualitative  Disclosure  about  Market  Risk”  in 
Item  7A  of  this  Annual  Report  on  Form  10-K  for  pricing  and  a  more  detailed  discussion  of  our  hedging 
transactions. 

We  may  in  the  future  enter  into  these  and  other  types  of  hedging  arrangements  to  reduce  our  exposure  to 
fluctuations in the market prices of oil and natural gas, or alternatively, we may decide to unwind or restructure the 
hedging arrangements we previously entered into.  Hedging transactions expose us to risk of financial loss in some 
circumstances,  including  if  production  is  less  than  expected,  the  other  party  to  the  contract  defaults  on  its 
obligations or there is a change in the expected differential between the underlying price in the hedging agreement 
and actual prices received.  Hedging transactions may limit the benefit we may otherwise receive from increases in 
the  price  for  oil  and  natural  gas.    Furthermore,  if  we  do  not  engage  in  hedging  transactions  or  unwind  hedging 
transaction we previously entered into, then we may be more adversely affected by declines in oil and natural gas 
prices than our competitors who engage in hedging transactions.  Additionally, hedging transactions may expose us 
to cash margin requirements. 

We recognize all gains and losses from changes in commodity derivative fair values immediately in earnings rather 
than deferring any such amounts in accumulated other comprehensive income.  Consequently, we may experience 
significant net losses, on a non-cash basis, due to changes in the value of our hedges as a result of commodity price 
volatility. 

Seasonal  weather  conditions  and  lease  stipulations adversely  affect  our  ability  to  conduct  drilling  activities  in 
some of the areas where we operate. 

Oil  and  gas  operations  in  the  Rocky  Mountains  are  adversely  affected  by  seasonal  weather  conditions  and  lease 
stipulations designed to protect various wildlife.  In certain areas, drilling and other oil and gas activities can only 
be  conducted  during  the  spring  and  summer  months.    This  limits  our  ability  to  operate  in  those  areas  and  can 
intensify  competition  during  those  months  for  drilling  rigs,  oil  field  equipment,  services,  supplies  and  qualified 
personnel, which may lead to periodic shortages.  Resulting shortages or high costs could delay our operations and 
materially increase our operating and capital costs. 

An increase in the differential or decrease in the premium between the NYMEX or other benchmark prices of oil 
and  natural  gas  and  the  wellhead  price  we  receive  could  have  a  material  adverse  effect  on  our  results  of 
operations, financial condition and cash flows. 

The prices that we receive for our oil and natural gas production generally trade at a discount, but sometimes at a 
premium, to the relevant benchmark prices such as NYMEX.  A negative difference between the benchmark price 
and the price received is called a differential and a positive difference is called a premium.  The differential and 
premium  may  vary  significantly  due  to  market  conditions,  the  quality  and  location  of  production  and  other  risk 
factors.  We cannot accurately predict oil and natural gas differentials and premiums.  Increases in the differential 
and  decreases  in  the  premium  between  the  benchmark  price  for  oil  and  natural  gas  and  the  wellhead  price  we 
receive could have a material adverse effect on our results of operations, financial condition and cash flows. 

31 

 
 
We  may  incur  substantial  losses  and  be  subject  to  substantial  liability  claims  as  a  result  of  our  oil  and  gas 
operations. 

We are not insured against all risks.  Losses and liabilities arising from uninsured and underinsured events could 
materially and adversely affect our business, financial condition or results of operations.  Our oil and natural gas 
exploration  and  production  activities  are  subject  to  all  of  the  operating  risks  associated  with  drilling  for  and 
producing oil and natural gas, including the possibility of: 

•     environmental hazards, such as uncontrollable flows of oil, gas, brine, well fluids, toxic gas or other pollution 

into the environment, including groundwater and shoreline contamination;  

•     abnormally pressured formations;  
•     mechanical difficulties, such as stuck oil field drilling and service tools and casing collapse;  
•     fires and explosions;  
•     personal injuries and death; and  
•     natural disasters. 

Any  of  these  risks  could  adversely  affect  our  ability  to  conduct  operations  or  result  in  substantial  losses  to  our 
company.    We  may  elect  not  to  obtain  insurance  if  we  believe  that  the  cost  of  available  insurance  is  excessive 
relative to the risks presented.  In addition, pollution and environmental risks generally are not fully insurable.  If a 
significant accident or other event occurs and is not fully covered by insurance, then it could adversely affect us. 

We have limited control over activities on properties we do not operate, which could reduce our production and 
revenues and increase capital expenditures. 

If  we  do  not  operate  the  properties  in  which  we  own  an  interest,  we  do  not  have  control  over  normal  operating 
procedures,  expenditures  or  future  development  of  our  properties.    The  failure  of  an  operator  of  our  wells  to 
adequately  perform  operations  or  an  operator’s breach  of the  applicable agreements  could reduce  our production 
and revenues.  The success and timing of our drilling and development activities on properties operated by others 
therefore depends upon a number of factors outside of our control, including the operator’s decisions with respect 
to the timing and amount of capital expenditures, the period of time over which the operator seeks to generate a 
return on capital expenditures, inclusion of other participants in drilling wells, and the use of technology, as well as 
the operator’s expertise and financial resources and the operator’s relative interest in the field.  Operators may also 
opt to decrease operational activities following a significant decline in oil or natural gas prices.  Because we do not 
have a majority interest in most wells we do not operate, we may not be in a position to remove the operator in the 
event of poor performance.  Accordingly, while we use commercially reasonable efforts to cause the operator to act 
as a reasonably prudent operator, we are limited in our ability to do so. 

Our use of 3-D seismic data is subject to interpretation and may not accurately identify the presence of oil and 
gas, which could adversely affect the results of our drilling operations. 

Even  when  properly  used  and  interpreted,  3-D  seismic  data  and  visualization  techniques  are  only  tools  used  to 
assist geoscientists in identifying subsurface structures and hydrocarbon indicators and do not enable the interpreter 
to know whether hydrocarbons are, in fact, present in those structures.  In addition, the use of 3-D seismic and other 
advanced  technologies  requires  greater  predrilling  expenditures  than  traditional  drilling  strategies,  and  we  could 
incur  losses  as  a  result  of  such  expenditures.    Thus,  some  of  our  drilling  activities  may  not  be  successful  or 
economical, and our overall drilling success rate or our drilling success rate for activities in a particular area could 
decline.  We often gather 3-D seismic data over large areas.  Our interpretation of seismic data delineates for us 
those portions of an area that we believe are desirable for drilling.  Therefore, we may choose not to acquire option 
or lease rights prior to acquiring seismic data, and in many cases, we may identify hydrocarbon indicators before 
seeking  option  or  lease rights in  the  location.    If  we  are  not  able to lease those  locations  on  acceptable  terms,  it 
would result in our having made substantial expenditures to acquire and analyze 3-D seismic data without having 
an opportunity to attempt to benefit from those expenditures. 

32 

 
 
 
Market  conditions  or  operational  impediments  may  hinder  our  access  to  oil  and  gas  markets  or  delay  our 
production. 

In connection with our continued development of oil and gas properties, we may be disproportionately exposed to 
the impact of delays or interruptions of production from wells in these properties, caused by transportation capacity 
constraints, curtailment of production or the interruption of transporting oil and gas volumes produced.  In addition, 
market conditions or a lack of satisfactory oil and gas transportation arrangements may hinder our access to oil and 
gas  markets  or  delay  our  production.    The  availability  of  a  ready  market  for  our  oil,  NGL  and  natural  gas 
production depends on a number of factors, including the demand for and supply of oil, NGLs and natural gas and 
the  proximity  of  reserves  to  pipelines  and  terminal  facilities.    Our  ability  to  market  our  production  depends 
substantially  on the availability  and capacity  of  gathering  systems,  pipelines  and  processing  facilities  owned  and 
operated  by  third-parties.    Additionally,  entering  into  arrangements  for  these  services  exposes  us  to  the  risk  that 
third  parties  will  default  on  their  obligations  under  such  arrangements.    Our  failure  to  obtain  such  services  on 
acceptable terms or the default by a third party on their obligation to provide such services could materially harm 
our  business.    We  may  be  required  to  shut  in  wells  for  a  lack  of  a  market  or  because  access  to  gas  pipelines, 
gathering systems or processing facilities may be limited or unavailable.  If that were to occur, then we would be 
unable to realize revenue from those wells until production arrangements were made to deliver the production to 
market. 

We are subject to complex laws that can affect the cost, manner or feasibility of doing business. 

Exploration, development, production and sale of oil and natural gas are subject to extensive federal, state, local 
and  international  regulation.    We  may  be  required  to  make  large  expenditures  to  comply  with  governmental 
regulations.  Matters subject to regulation include: 

•     discharge permits for drilling operations;  
•     drilling bonds;  
•     reports concerning operations;  
•     the spacing of wells;  
•     unitization and pooling of properties; and  
•     taxation. 

Under these laws, we could be liable for personal injuries, property damage and other damages.  Failure to comply 
with these laws also may result in the suspension or termination of our operations and subject us to administrative, 
civil and criminal penalties.  Moreover, these laws could change in ways that could substantially increase our costs.  
Any  such  liabilities,  penalties,  suspensions,  terminations  or  regulatory  changes  could  materially  and  adversely 
affect our financial condition and results of operations. 

Our operations may incur substantial costs and liabilities to comply with environmental laws and regulations. 

Our oil and gas operations are subject to stringent federal, state and local laws and regulations relating to the release 
or  disposal of  materials into  the environment  or  otherwise relating  to  environmental  protection.   These  laws  and 
regulations  may  require  the  acquisition  of  a  permit  before  drilling  commences;  restrict  the  types,  quantities  and 
concentration  of  materials  that  can  be  released  into  the  environment  in  connection  with  drilling  and  production 
activities; limit or prohibit drilling activities on certain lands lying within wilderness, wetlands and other protected 
areas; and impose substantial liabilities for pollution resulting from our operations.  Failure to comply with these 
laws  and  regulations  may  result  in  the  assessment  of  administrative,  civil  and  criminal  penalties,  incurrence  of 
investigatory or remedial obligations, or the imposition of injunctive relief.  Under these environmental laws and 
regulations,  we  could  be  held  strictly  liable  for  the  removal  or  remediation  of  previously  released  materials  or 
property contamination regardless of whether we were responsible for the release or if our operations were standard 
in the industry at the time they were performed.  Private parties, including the surface owners of properties upon 
which we drill, may also have the right to pursue legal actions to enforce compliance as well as to seek damages for 

33 

 
 
 
non-compliance with environmental laws and regulations or for personal injury or property damage.  We may not 
be able to recover some or any of these costs from insurance.  Moreover, federal law and some state laws allow the 
government to place a lien on real property for costs incurred by the government to address contamination on the 
property. 

Changes in environmental laws and regulations occur frequently and may have a materially adverse impact on our 
business.  For example, as a result of the explosion and fire on the Deepwater Horizon drilling rig in April 2010 and 
the release of oil from the Macondo well in the Gulf of Mexico, there has been a variety of governmental regulatory 
initiatives to make more stringent or otherwise restrict oil and natural gas drilling operations in certain locations.  
Any increased governmental regulation or suspension of oil and natural gas exploration or production activities that 
arises  out  of  these  incidents  could  result  in  higher  operating  costs,  which  could,  in  turn,  adversely  affect  our 
operating  results.    Also,  for  instance,  any  changes  in  laws  or  regulations  that  result  in  more  stringent  or  costly 
material  handling,  storage,  transport,  disposal  or  cleanup  requirements  could  require  us  to  make  significant 
expenditures to maintain compliance and may otherwise have a material adverse effect on our results of operations, 
competitive position or financial condition as well as those of the oil and gas industry in general. 

Climate change legislation or regulations restricting emissions of “greenhouse gasses” could result in increased 
operating costs and reduced demand for oil and gas that we produce. 

On  December 15,  2009,  the  U.S.  Environmental  Protection  Agency  (the  “EPA”)  published  its  findings  that 
emissions  of  carbon  dioxide,  methane,  and  other  greenhouse  gases  (“GHG”)  present  an  endangerment  to  public 
health and the environment because emissions of such gases are, according to the EPA, contributing to the warming 
of the earth’s atmosphere and other climate changes.  Based on these findings, the EPA has begun adopting and 
implementing regulations that restrict emissions of GHG under existing provisions of the federal Clean Air Act (the 
“CAA”), including one rule that limits emissions of GHG from motor vehicles beginning with the 2012 model year.  
The  EPA  has  asserted  that  these  final  motor  vehicle  GHG  emission  standards  trigger  the  CAA  construction  and 
operating permit requirements for stationary sources, commencing when the motor vehicle standards took effect on 
January 2, 2011.  On June 3, 2010, the EPA published its final rule to address the permitting of GHG emissions 
from stationary sources under the Prevention of Significant Deterioration (“PSD”) and Title V permitting programs.  
This rule “tailors” these permitting programs to apply to certain stationary sources of GHG emissions in a multi-
step process, with the largest sources first subject to permitting.  Further, facilities required to obtain PSD permits 
for  their  GHG  emissions  are  required  to  reduce  those  emissions  consistent  with  guidance  for  determining  “best 
available control technology” standards for GHG, which guidance was published by the EPA in November 2010.  
Also in November 2010, the EPA expanded its existing GHG reporting rule to include onshore oil and natural gas 
production,  processing,  transmission,  storage,  and  distribution  facilities.    This  rule  requires  reporting  of  GHG 
emissions from such facilities on an annual basis with reporting beginning in 2012 for emissions occurring in 2011. 

In addition, both houses of Congress have actively considered legislation to reduce emissions of GHG, and many 
states have already taken legal measures to reduce emissions of GHG, primarily through the development of GHG 
inventories, greenhouse gas permitting and/or regional GHG cap and trade programs.  Most of these cap and trade 
programs work by requiring either major sources of emissions or major producers of fuels to acquire and surrender 
emission  allowances,  with  the  number  of  allowances  available  for  purchase  reduced  each  year  until  the  overall 
GHG emission reduction goal is achieved.  In the absence of new legislation, the EPA is issuing new regulations 
that limit emissions of GHG associated with our operations which will require us to incur costs to inventory and 
reduce  emissions  of  GHG  associated  with  our  operations  and  which  could  adversely  affect  demand  for  the  oil, 
NGLs  and  natural  gas  that  we  produce.    Finally,  it  should  be  noted  that  some  scientists  have  concluded  that 
increasing concentrations of GHG in the atmosphere may produce climate changes that have significant physical 
effects, such as increased frequency and severity of storms, droughts, floods and other climatic events; if any such 
effects were to occur, they could have an adverse effect on our assets and operations. 

34 

 
 
Unless  we  replace  our  oil  and  natural  gas  reserves,  our  reserves  and  production  will  decline,  which  would 
adversely affect our cash flows and results of operations. 

Unless we conduct successful development, exploitation and exploration activities or acquire properties containing 
proved  reserves,  our  proved  reserves  will  decline  as  those  reserves  are  produced.    Producing  oil  and  natural  gas 
reservoirs  generally  are  characterized  by  declining  production  rates  that  vary  depending  upon  reservoir 
characteristics  and  other  factors.    Our  future  oil  and  natural  gas  reserves  and  production,  and  therefore  our  cash 
flow and income, are highly dependent on our success in efficiently developing and exploiting our current reserves 
and  economically  finding  or  acquiring  additional recoverable  reserves.   We  may  not  be  able to  develop, exploit, 
find or acquire additional reserves to replace our current and future production.   

The loss of senior management or technical personnel could adversely affect us. 

To a large extent, we depend on the services of our senior management and technical personnel.  The loss of the 
services  of  our  senior  management  or  technical  personnel,  including  James  J.  Volker,  Chairman  and  Chief 
Executive  Officer;  James  T.  Brown,  President  and  Chief  Operating  Officer;  Mark  R.  Williams,  Senior  Vice 
President,  Exploration  and  Development;  J.  Douglas  Lang,  Vice  President,  Reservoir  Engineering/Acquisitions; 
Rick  A.  Ross,  Vice  President,  Operations;  David  M.  Seery,  Vice  President,  Land;  Michael  J.  Stevens,  Vice 
President  and  Chief  Financial  Officer;  or  Peter  W.  Hagist,  Vice  President,  Permian  Operations,  could  have  a 
material adverse effect on our operations.  We do not maintain, nor do we plan to obtain, any insurance against the 
loss of any of these individuals. 

Competition in the oil and gas industry is intense, which may adversely affect our ability to compete. 

We  operate  in  a  highly  competitive  environment  for  acquiring  properties,  marketing  oil  and  gas  and  securing 
trained  personnel.    Many  of  our  competitors  possess  and  employ  financial,  technical  and  personnel  resources 
substantially  greater  than  ours,  which  can  be  particularly  important  in  the  areas  in  which  we  operate.    Those 
companies may be able to pay more for productive oil and gas properties and exploratory prospects and to evaluate, 
bid for and purchase a greater number of properties and prospects than our financial or personnel resources permit.  
Our ability to acquire additional prospects and to find and develop reserves in the future will depend on our ability 
to  evaluate  and  select  suitable  properties  and  to  consummate  transactions  in  a  highly  competitive  environment.  
Also, there is substantial competition for available capital for investment in the oil and gas industry.  We may not 
be  able  to  compete  successfully  in  the  future  in  acquiring  prospective  reserves,  developing  reserves,  marketing 
hydrocarbons, attracting and retaining quality personnel and raising additional capital. 

Certain  federal  income  tax  deductions  currently  available  with  respect  to  oil  and  gas  exploration  and 
development may be eliminated or deferred as a result of future legislation. 

In February 2012, President Obama’s Administration released its proposed federal budget for fiscal year 2013 that 
would, if enacted into law, make significant changes to United States tax laws, including the elimination of certain 
key U.S. federal income tax preferences currently available to oil and gas exploration and production companies.  
Such changes include, but are not limited to: 

•     the repeal of the percentage depletion allowance for oil and gas properties;  
•     the elimination of current deductions for intangible drilling and development costs;  
•     the elimination of the deduction for certain U.S. production activities; and  
•     an extension of the amortization period for certain geological and geophysical expenditures.   

It is unclear, however, whether any such changes will be enacted or how soon such changes could be effective.  The 
passage  of  any  legislation containing  these  or  similar  changes in  U.S.  federal  income  tax  law  could  eliminate  or 
defer certain tax deductions that are currently available with respect to oil and gas exploration and development, 
and any such changes could negatively affect our financial condition and results of operations. 

35 

 
 
 
In  connection  with  the  passage  of  the  Dodd-Frank  Wall  Street  Reform  and  Consumer  Protection  Act,  new 
regulations forthcoming in this area may result in increased costs and cash collateral requirements for the types 
of oil and gas derivative instruments we use to manage our risks related to oil and gas commodity price volatility. 

On July 21, 2010, the Dodd-Frank Wall Street Reform and Consumer Protection Act was enacted into law.  This 
financial reform legislation includes provisions that require over-the-counter derivative transactions to be executed 
through  an  exchange  or  centrally  cleared.    In  addition,  the  legislation  provides  an  exemption  from  mandatory 
clearing requirements based on regulations to be developed by the Commodity Futures Trading Commission (the 
“CFTC”) and the SEC for transactions by non-financial institutions to hedge or mitigate commercial risk.  At the 
same  time,  the  legislation  includes  provisions  under  which  the  CFTC  may  impose  collateral  requirements  for 
transactions, including those that are used to hedge commercial risk.  However, during drafting of the legislation, 
members  of  Congress  adopted report  language  and issued  a  public letter stating  that it  was  not their  intention  to 
impose  margin  and  collateral  requirements  on  counterparties  that  utilize  transactions  to  hedge  commercial  risk.  
Final  rules  on  major  provisions  in  the  legislation,  like  new  margin  requirements,  will  be  established  through 
rulemakings and will not take effect until 12 months after the date of enactment.  Although we cannot predict the 
ultimate  outcome  of  these  rulemakings,  new  regulations  in  this  area  may  result  in  increased  costs  and  cash 
collateral requirements for the types of oil and gas derivative instruments we use to hedge and to otherwise manage 
our financial risks related to volatility in oil and gas commodity prices. 

Item 1B.  Unresolved Staff Comments 

None. 

Item 2. 

Properties 

Summary of Oil and Gas Properties and Projects 

Rocky Mountain Region 

Our Rocky Mountain operations include assets in the states of North Dakota, Montana, Colorado, Utah, Wyoming 
and California.  As of December 31, 2012, our estimated proved reserves in the Rocky Mountain region were 195.2 
MMBOE (79% oil), which represented 51% of our total estimated proved reserves and contributed 67.6 MBOE/d 
of average daily production in December 2012. 

Sanish  Field.    Our  Sanish  area  in  Mountrail  County,  North  Dakota  encompasses  approximately  107,800  gross 
(66,100 net) developed and undeveloped acres.  Net production in the Sanish field averaged 32.6 MBOE/d for the 
fourth  quarter  of  2012,  representing  a  4%  increase  from  31.4  MBOE/d  in  the  third  quarter  of  2012.    As  of 
December 31, 2012, we had seven drilling rigs active in the Sanish field.  Two of these rigs are drilling multiple 
wells from the same drilling location or well pad (“pad drilling”).  We plan to initiate a higher density pilot program 
in the Sanish field in the first half of 2013.  We also plan to re-fracture stimulate several wells in our Sanish field in 
2013. 

In  order  to  process  the  produced  gas  stream  from  the  Sanish  wells,  we  constructed  and  brought  on-line  the 
Robinson Lake gas plant.  In December 2010, we added additional equipment which brought the plant’s processing 
capacity to 90 MMcf/d.  In April 2011, we added fractionation equipment which allows us to produce propane and 
butane, which end products are typically sold for higher realized prices in local markets.  Additionally, we added 
compression in September 2012 that brought the plant’s inlet capacity to 72 MMcf/d, and we intend to add field 
compression during 2013 in order to fully utilize the 90 MMcf/d processing capability.   

Lewis & Clark/Pronghorn.  Our Lewis & Clark/Pronghorn prospects are located primarily in the Stark and Billings 
counties of North Dakota and run along the Bakken shale pinch-out in the southern Williston Basin.  In this area, 
the  Upper  Bakken  shale  is  thermally  mature,  moderately  over-pressured,  and  we  believe  that  it  has  charged 
reservoir  zones  within  the immediately  underlying  Pronghorn  Sand  and Three  Forks  formations (Middle  Bakken 

36 

 
 
 
and  Lower  Bakken  Shale  is  absent).    As  of  December  31,  2012,  the  Lewis  &  Clark/Pronghorn  prospects 
encompassed approximately 398,300 gross (263,000 net) developed and undeveloped acres.  Net production in the 
Lewis  &  Clark/Pronghorn  prospects  averaged  13.4  MBOE/d  in  the  fourth  quarter  of  2012,  representing  a  10% 
increase  from  12.2  MBOE/d  in  the third  quarter  of  2012.    As of  December  31,  2012,  we  had seven  drilling  rigs 
operating in the Pronghorn prospect, making this our second most active area in the Williston Basin.  Four of the 
rigs working in the Pronghorn prospect are utilizing pad drilling, drilling two or three wells from each pad.  We are 
realizing cost efficiencies with the use of multi-well pads in the drilling and completion of wells.  We also plan to 
conduct a higher density pilot program in the Pronghorn prospect in 2013.   

We have completed the construction of our gas processing plant located south of Belfield, North Dakota, which has 
a processing capacity of 30 MMcf/d and which primarily processes production from the Pronghorn area.  Currently, 
there is inlet compression in place to process 24 MMcf/d, and as of December 31, 2012 the plant was processing 18 
MMcf/d.    In  November  2012,  we  began  connecting  other  operators’  wells  to  the  plant.    We  intend  to  add  inlet 
compression  during  2013  in  order  to  fully  utilize  the  30  MMcf/d  processing  capability.    We  are  also  currently 
installing fractionation equipment to convert NGLs into propane and butane, which end products are typically sold for 
higher realized prices in local markets  In May 2012, we sold a 50% ownership interest in the plant, gathering systems 
and  related  facilities.    We  retained  a  50%  ownership  interest  and  will  continue  to  operate  the  Belfield  plant  and 
facilities.    Additionally,  we  completed  construction  on  an  oil  terminal  and  a  seven-mile  oil  transmission  line  to 
allow for the delivery of oil production from the Pronghorn prospect into the Bridger Four Bears oil transmission 
system.  The use of this terminal will reduce our transportation costs per barrel and thereby increase our returns on 
the development of this prospect.  

Hidden  Bench/Tarpon.    Our  Hidden  Bench  and  Tarpon  prospects  in  McKenzie  County,  North  Dakota  target  the 
Bakken  and  Three  Forks  formations  and  encompass  approximately  49,100  gross  (28,600  net)  developed  and 
undeveloped acres and 8,100 gross (6,300 net) developed and undeveloped acres, respectively, as of December 31, 
2012.    Net  production  at  Hidden  Bench/Tarpon  averaged  3.1  MBOE/d  in  the  fourth  quarter  of  2012,  which 
represents a 23% increase from 2.5 MBOE/d in the third quarter of 2012.  We drilled a highly productive Tarpon 
Federal well in late 2011 in the Tarpon prospect.  Based on the results, we had planned to drill additional wells in 
Tarpon but were delayed by federal drilling permit requirements for these wells.  During the fourth quarter of 2012, 
we  received  the  required  permits  and  drilled  four  additional  wells  in  this  area.    We  expect  to  drill  most  of  the 
remaining  planned  Tarpon  development  wells  during  2013.    We  have  implemented  pad  drilling  at  our  Tarpon 
prospect and plan to drill three wells from each pad.   

Missouri Breaks Prospect.  As of December 31, 2012, we had approximately 95,900 gross (66,100 net) developed 
and  undeveloped  acres  at  our  Missouri  Breaks  prospect  located  in  Richland  County,  Montana  and  McKenzie 
County, North Dakota.  In the fourth quarter of 2012, net production from the Missouri Breaks prospect averaged 
1.7  MBOE/d,  representing  a  189%  increase  from  0.6  MBOE/d  in  the  third  quarter  of  2012.    We  have  drilled 
successful wells on the western and southern portions of our acreage.  In the fourth quarter of 2012, we completed 
our first well on the eastern portion of our Missouri Breaks prospect. 

Big Island Prospect. As of December 31, 2012, we had approximately 172,500 gross (122,400 net) developed and 
undeveloped acres at our Big Island prospect, which is located in Golden Valley County, North Dakota and Wibaux 
County,  Montana.    We  are  using  3-D  seismic  interpretations  to  identify  Red  River  drilling  locations  at  our  Big 
Island prospect.  We plan to use a horizontal well to test the Lower Red River “D” zone in 2013. 

Redtail  Prospect.    As  of  December  31,  2012,  we  had  approximately  109,900  gross  (79,500  net)  developed  and 
undeveloped acres at our Redtail prospect in the Weld County, Colorado portion of the Denver Julesburg Basin.  In 
2012, we drilled 15 wells in this prospect and were very encouraged with the results.  We plan to drill up to eight 
Niobrara “B” wells per spacing unit and utilize pad drilling to place the wells.  The associated gas produced along 
with Niobrara crude oil must be processed before being sold, and we have therefore initiated the construction of our 
own gas processing plant in Weld County, Colorado for this purpose.  The plant’s planned inlet capacity will be 15 
MMcf/d.  The air permit for the plant was filed with the Colorado Department of Public Health and Environment in 
November 2012.  We have ordered the major equipment necessary to construct this plant, and we plan to have the 

37 

 
 
plant online in early 2014.  As of December 31, 2012, we had one drilling rig operating in this area, and we plan to 
add a second drilling rig in mid-year 2013 and a third upon completion of the plant.  

Permian Basin Region 

Our Permian Basin operations include assets in Texas and New Mexico.  As of December 31, 2012, the Permian 
Basin  region  contributed  123.8  MMBOE  (84%  oil)  of  estimated  proved  reserves  to  our  portfolio  of  operations, 
which  represented  33%  of  our  total  estimated  proved  reserves  and  contributed  11.0  MBOE/d  of  average  daily 
production in December 2012. 

North  Ward  Estes  Field.    The  North  Ward  Estes  field  includes  six  base  leases  with  100%  working  interests  in 
approximately 62,100 gross (60,400 net) developed and undeveloped acres in Ward and Winkler counties, Texas.  
Current  EOR  production  is  from  the  Yates  formation  at  2,600  feet,  which  is  the  primary  producing  zone,  with 
additional  production  from  other  zones  including  the  Queen  at  3,000  feet.    In  the  North  Ward  Estes  field,  the 
estimated proved reserves as of December 31, 2012 were 41% PDP, 16% PDNP and 43% PUD. 

The North Ward Estes field has been responding positively to our water and CO2 floods that we initiated in May 
2007.  In the fourth quarter of 2012, production from the field averaged 8.5 MBOE/d, which was consistent with 
production  rates  in  the  third  quarter  of  2012.    As  of  December  31,  2012,  we  were  injecting  approximately  350 
MMcf/d of CO2 in this field, over half of which is recycled.  In this field, we are developing new and reactivated 
wells for water and CO2 injection and for production purposes.  Additionally, we plan to install oil, gas and water 
processing facilities in eight phases.  The first three phases are essentially complete and are currently undergoing 
water  and  CO2  injection.    The  field  and  injection  infrastructure  of  Phase  IV  is  complete,  and  injection  has  been 
initiated on about half of the project. 

In  order  to  fully  develop  the  proved  undeveloped  reserves  at  North  Ward  Estes  within  our  currently  planned 
timeframe, we will need to utilize significant quantities of purchased CO2.  As of December 31, 2012, we currently 
have under contract 100% of the future CO2 volumes that we believe are necessary to develop the field’s proved 
undeveloped  reserves.    In  addition,  we  are  currently  in  negotiations  and  planning  for  future  sources  capable  of 
generating  sufficient  CO2  quantities  to  carry  out  the  development  of  all  probable  and  possible  reserves  at  North 
Ward Estes.  However, we cannot provide absolute assurance with respect to the timing or actual quantities of CO2 
that will be obtainable for the development of oil and gas reserves at this field. 

Big  Tex  Prospect.    As  of  December  31,  2012,  we  had  accumulated  approximately  116,700  gross  (86,900  net) 
developed  and  undeveloped  acres  at  our  Big  Tex  prospect  in  Pecos,  Reeves  and  Ward  counties,  Texas  in  the 
Delaware  Basin.    Prospective  formations  include  the  Brushy  Canyon,  Bone  Spring  and  Wolfcamp  horizons.  
During  2013,  we  plan  to  drill  three  wells  in  the  Big  Tex  prospect,  all  of  which  are  expected  to  be  horizontal 
Wolfcamp  wells.    In  late  2012,  we  completed  a  well  utilizing  a  cemented  liner  and  a  plug  and  perf  completion 
technique  that  is  providing  encouraging  early  results.    We  plan  to  implement  this  completion  strategy  on  the 
horizontal wells drilled during 2013. 

Mid-Continent Region  

Our Mid-Continent operations include assets in Oklahoma, Arkansas and Kansas.  As of December 31, 2012, the 
Mid-Continent region contributed 49.2 MMBOE (83% oil) of proved reserves to our portfolio of operations, which 
represented 13% of our total estimated proved reserves and contributed 7.9 MBOE/d of average daily production in 
December 2012.  The majority of the proved value within our Mid-Continent operations is related to properties in 
the Postle field. 

Postle  Field.    The  Postle  field,  located  in  Texas  County,  Oklahoma,  includes  five  producing  units  and  one 
producing  lease  covering  a  total  of  approximately  26,400  gross  (26,100  net)  developed  and  undeveloped  acres.  
Four of the units are currently active CO2 enhanced recovery projects.  In the fourth quarter of 2012, production 
from  the  field  averaged  7.8  MBOE/d,  which  represents  a  4%  decrease  from  8.2  MBOE/d  in  the  third  quarter  of 
2012.  As of December 31, 2012, we were injecting approximately 120 MMcf/d of CO2 in this field, over half of 

38 

 
 
which  is  recycled  gas.    We  manage  our  CO2  flood  at  Postle  on  a  pattern-by-pattern  basis  in  order  to  optimize 
utilization  of  CO2,  crude  oil  production,  and  ultimate  recovery.   A  pattern  typically  consists  of  a  producing  well 
surrounded by four water/CO2 injectors.  As a pattern matures, increasing volumes of water are alternated with CO2 
injection to control gas breakthrough and to optimize sweep efficiency.  This process, referred to as “WAG” (Water 
Alternating  Gas),  typically  results  in  the  highest  possible  oil  recovery.    In  the  Postle  field,  the  estimated  proved 
reserves as of December 31, 2012 were 73% PDP, 2% PDNP and 25% PUD. 

We are the sole owner of the Dry Trails gas plant located in the Postle field.  This plant is comprised of two trains 
each with a processing capacity of approximately 40 MMcf/d.  The more recent train, which Whiting constructed, 
utilizes a membrane technology to extract CO2 from the produced wellhead mixture of hydrocarbon and CO2 gas, 
so that it can be re-injected into the producing formation.   

In  addition  to  the  producing  assets  and  processing  plant,  we  have  a  60%  interest  in  the  120-mile  Transpetco 
operated CO2 transportation pipeline, thereby assuring the delivery of CO2 to the Postle field at a fair tariff.  We 
have entered into long-term purchase agreements that will provide the necessary CO2 to carry out the flood over the 
life of the field. 

Michigan Region 

As  of  December  31,  2012,  our  estimated  proved  reserves  in  the  Michigan  region  were  7.6  MMBOE  (22%  oil), 
which represents 2% of our total estimated proved reserves, and our December 2012 daily production averaged 2.7 
MBOE/d.    We  also  operate  the  West  Branch  and  Reno  gas  processing  plants.    The  West  Branch  plant  gathers 
production from the Clayton unit, West Branch field and other smaller fields. 

Gulf Coast Region 

Our Gulf Coast operations include assets located in Texas, Louisiana and Mississippi.  As of December 31, 2012, 
the Gulf Coast region contributed 3.0 MMBOE (33% oil) of proved reserves to our portfolio of operations, which 
represented 1% of our total estimated proved reserves and contributed 1.2 MBOE/d of average daily production in 
December 2012. 

Reserves 

As of December 31, 2012, all of our oil and gas reserves are attributable to properties within the United States.  A 
summary of our oil and gas reserves as of December 31, 2012 based on average fiscal-year prices (calculated as the 
unweighted  arithmetic  average  of  the  first-day-of-the-month  price  for  each  month  within  the  12-month  period 
ended December 31, 2012) is as follows: 

Oil 
(MBbl) 

NGLs 
(MBbl) 

Natural Gas 
(MMcf) 

Total 
(MBOE) 

Proved reserves 

190,845 
Developed ................................................................
110,440 
Undeveloped ................................................................
301,285 

Total proved—December 31, 2012 ................................

Probable reserves 

2,343 
Developed ................................................................
82,639 
Undeveloped ................................................................
84,982 

Total probable—December 31, 2012 ................................

Possible reserves 

772 
Developed ................................................................
122,407 
Undeveloped ................................................................
123,179 

Total possible—December 31, 2012 ................................

39 

24,204 
15,894 
40,098 

534 
11,388 
11,922 

97 
21,839 
21,936 

160,893 
63,371 
224,264 

6,984 
102,598 
109,582 

1,721 
154,661 
156,382 

241,864 
136,896 
378,760 

4,041 
111,127 
115,168 

1,156 
170,022 
171,178 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Proved  reserves.    Estimates  of  proved  developed  and  undeveloped  reserves  are  inherently  imprecise  and  are 
continually subject to revision based on production history, results of additional exploration and development, price 
changes and other factors. 

In 2012, total extensions and discoveries of 81.5 MMBOE were primarily attributable to successful drilling in the 
Sanish field, Redtail prospect, Missouri Breaks prospect and the Pronghorn area.  The new producing wells in these 
fields and their related proved undeveloped locations added during the year increased our proved reserves. 

In 2012, revisions to previous estimates decreased proved developed and undeveloped reserves by a net amount of 
7.1 MMBOE.  Included in these revisions were (i) 11.8 MMBOE of downward adjustments caused by lower crude 
oil and natural gas prices incorporated into our reserve estimates at December 31, 2012 as compared to December 
31, 2011 and (ii) 4.7 MMBOE of net upward adjustments attributable to reservoir analysis and well performance.   

The gas component of the net 4.7 MMBOE revision consisted of a 1.1 MMBOE decrease that was primarily related 
to  (i)  a  downward  revision  for  the  recent  performance  of  various  gas  wells  in  the  Central  Rockies  area,  and  (ii) 
performance  adjustments  on  various  oil  wells  in  the  Northern  Rockies  area  and  Permian  Basin  region  that 
negatively  impacted  those  wells’  associated  gas  reserves.    Partially  offsetting  these  negative  revisions  was  an 
increase in associated gas volumes related to additional oil reserves assigned to the Postle and North Ward Estes 
fields. 

Proved undeveloped reserves.  From December 31, 2011 to December 31, 2012, our proved undeveloped reserves 
(“PUDs”)  increased  28%  or  29.9  MMBOE.    This  increase  in  proved  undeveloped  reserves  was  primarily 
attributable to additional PUD locations added as a result of successful drilling in the Northern and Central Rockies 
areas and additional PUD reserves being assigned to our Postle and North Ward Estes EOR projects.  There were 
16.8  MMBOE  of  PUDs  that  became  proved  developed  reserves  during  the  year  as  a  result  of  83  proved 
undeveloped  well  locations  that  were  drilled  and  placed  on  production  in  2012.    We  incurred  $392.2  million  in 
capital expenditures, or $23.33 per BOE, to drill and bring on-line these 83 PUD locations.  In addition, there were 
approximately 7.1 MMBOE of PUDs that became proved developed reserves in 2012 at our CO2 EOR projects in 
the  Postle  and  North  Ward  Estes  fields.    These  PUDs  were  converted  to  proved  developed  at  a  cost  of 
approximately  $34.95  per  BOE.    Combining  the  PUD  drilling  conversions  with  the  PUD  enhanced  oil  recovery 
conversions, the Company converted 23.9 MMBOE of PUDs to proved developed reserves during 2012 at a cost of 
$26.80 per BOE. 

Based on our 2012 year end independent engineering reserve report, we will drill all of our individual PUD drilling 
locations within five years.  However, we do have certain quantities of proved undeveloped reserves in the North 
Ward Estes field that will remain in the PUD category for periods extending beyond five years because of certain 
external factors that preclude the development of the North Ward Estes enhanced oil recovery PUDs all at once.  
Due to the large areal extent of the field, the CO2 enhanced recovery project will progress through the field in a 
sequential  manner as earlier injection  areas  are  completed and  new injection  areas  are initiated.   External  factors 
that  preclude  the  initiation  of  the  CO2  project  throughout  the  field  at  the  same  time  include:  (i)  the  volume  of 
injection water necessary to repressure the reservoir in advance of the CO2 injection, (ii) the volume of purchased 
and recycled CO2 necessary to be injected to process the oil in the reservoir, and (iii) the equipment and manpower 
necessary  to  build  the  infrastructure  and  prepare  the  wells  for  the  CO2  enhanced  recovery  project.    Our  staged 
development plan is designed to expand the project as quickly and efficiently as possible to fully develop the field. 

Probable  reserves.    Estimates  of  probable  developed  and  undeveloped  reserves  are  inherently  imprecise.    When 
producing  an  estimate  of  the  amount  of  oil  and  gas  that  is  recoverable  from  a  particular  reservoir,  an  estimated 
quantity of probable reserves is an estimate that is as likely as not to be achieved.  Estimates of probable reserves 
are  also  continually  subject  to  revision  based  on  production  history,  results  of  additional  exploration  and 
development, price changes and other factors. 

We use deterministic methods to estimate probable reserve quantities, and when deterministic methods are used, it 
is as likely as not that actual remaining quantities recovered will exceed the sum of estimated proved plus probable 

40 

 
 
reserves.  Probable reserves may be assigned to areas of a reservoir adjacent to proved reserves where data control 
or interpretations  of  available data  are  less certain and  even  if the  interpreted reservoir  continuity  of structure or 
productivity does not meet the reasonable certainty criterion.  Probable reserves may be assigned to areas that are 
structurally higher than the proved area if these areas are in communication with the proved reservoir.  Probable 
reserves estimates also include potential incremental quantities associated with a greater percentage recovery of the 
hydrocarbons in place than assumed for proved reserves. 

Increases in probable reserves during 2012 were primarily attributable to (i) 400 new probable undeveloped well 
locations, which were added in 2012 as a result of our drilling activity in the Rocky Mountains region, and (ii) new 
probable reserve volumes in the Queen formation at North Ward Estes, that were added due to successful CO2 pilot 
floods that were carried out on this reservoir.  

Possible reserves.  Estimates of possible developed and undeveloped reserves are also inherently imprecise.  When 
producing  an  estimate  of  the  amount  of  oil  and  gas  that  is  recoverable  from  a  particular  reservoir,  an  estimated 
quantity of possible reserves is an estimate that might be achieved, but only under more favorable circumstances 
than are likely.  Estimates of possible reserves are also continually subject to revision based on production history, 
results of additional exploration and development, price changes and other factors. 

We use deterministic methods to estimate possible reserve quantities, and when deterministic methods are used to 
estimate possible reserve quantities, the total quantities ultimately recovered from a project have a low probability 
of exceeding proved plus probable plus possible reserves.  Possible reserves may be assigned to areas of a reservoir 
adjacent to probable reserves where data control and interpretations of available data are progressively less certain.  
Frequently, this will be in areas where geoscience and engineering data are unable to define clearly the area and 
vertical limits of commercial production from the reservoir.  Possible reserves also include incremental quantities 
associated with a greater percentage recovery of the hydrocarbons in place than the recovery quantities assumed for 
probable reserves. 

Possible reserves may be assigned where geoscience and engineering data identify directly adjacent portions of a 
reservoir within the same accumulation that may be separated from proved areas by faults with displacement less 
than formation thickness or other geological discontinuities and that have not been penetrated by a wellbore, and 
we believe that such adjacent portions are in communication with the known (proved) reservoir.  Possible reserves 
may  be  assigned  to  areas  that  are  structurally  higher  or  lower  than  the  proved  area  if  these  areas  are  in 
communication with the proved reservoir. 

Possible  reserves  decreased  during  2012  primarily  due  to  successful  drilling  at  our  Sanish  field,  Lewis  & 
Clark/Pronghorn  prospects  and  Hidden  Bench/Tarpon  prospects,  which  resulted  in  possible  reserves  being 
promoted to either the probable or proved reserve categories in these areas. 

At December 31, 2012, our probable reserves were estimated to be 115.2 MMBOE and our possible reserves were 
estimated  to  be  171.2  MMBOE,  for  a  total  of  286.3 MMBOE.    The  EOR  project  at  our  North  Ward  Estes  field 
represented 106.8 MMBOE, or 37%, of our total 286.3 MMBOE probable and possible reserve quantities.  In order 
to fully develop the EOR probable and possible reserves at North Ward Estes, we will need to utilize significant 
quantities of purchased CO2.  We are currently in negotiations and planning for future sources capable of generating 
sufficient CO2 quantities to carry out the development of all probable and possible reserves at North Ward Estes.  
However, the availability of future CO2 supplies is subject to uncertainty and may require significant future capital 
expenditures by us, and we cannot therefore provide assurance with respect to the timing or actual quantities of CO2 
that will be obtainable for the development of such reserves.  

Preparation of reserves estimates.  The Company maintains adequate and effective internal controls over the reserve 
estimation process as well as the underlying data upon which reserve estimates are based.  The primary inputs to the 
reserve estimation process are comprised of technical information, financial data, ownership interests and production 
data.    All  field  and  reservoir  technical  information,  which  is  updated  annually,  is  assessed  for  validity  when  the 
reservoir  engineers  hold  technical  meetings  with  geoscientists,  operations  and  land  personnel  to  discuss  field 

41 

 
 
 
performance and to validate future development plans.  Current revenue and expense information is obtained from the 
Company’s  accounting  records,  which  are  subject  to external  quarterly  reviews, annual  audits  and  their  own  set  of 
internal  controls  over  financial  reporting.    Internal  controls  over  financial  reporting  are  assessed  for  effectiveness 
annually  using  the  criteria  set  forth  in  Internal  Control  –  Integrated  Framework  issued  by  the  Committee  of 
Sponsoring Organizations of the Treadway Commission.  All current financial data such as commodity prices, lease 
operating expenses, production taxes and field commodity price differentials are updated in the reserve database and 
then analyzed to ensure that they have been entered accurately and that all updates are complete.  The Company’s 
current ownership in mineral interests and well production data are also subject to the aforementioned internal controls 
over  financial  reporting,  and  they  are  incorporated  into  the  reserve  database  as  well  and  verified  to  ensure  their 
accuracy and completeness.  Once the reserve database has been entirely updated with current information, and all 
relevant technical support material has been assembled, Whiting’s independent engineering firm Cawley, Gillespie & 
Associates, Inc. (“CG&A”) meets with Whiting’s technical personnel in the Company’s Denver and Midland offices 
to  review  field  performance  and  future  development  plans.    Following  these  reviews,  the  reserve  database  and 
supporting data is furnished to CG&A so that they can prepare their independent reserve estimates and final report.  
Access to the Company’s reserve database is restricted to specific members of the reservoir engineering department. 

CG&A  is  a  Texas  Registered  Engineering  Firm.   Our  primary  contact  at  CG&A  is  Mr.  Robert  D.  Ravnaas, 
President.  Mr. Ravnaas is a State of Texas Licensed Professional Engineer.  See Exhibit 99.2 of this Annual Report 
on  Form  10-K  for  the  Report  of  Cawley,  Gillespie  &  Associates,  Inc.  and  further  information  regarding  the 
professional qualifications of Mr. Ravnaas. 

Our  Vice  President  of  Reservoir  Engineering  and  Acquisitions  is  responsible  for  overseeing  the  preparation  of  the 
reserves estimates.  He has over 39 years of experience, the majority of which has involved reservoir engineering and 
reserve estimation, holds a Bachelor’s degree in petroleum engineering from the  University of Wyoming, holds an 
MBA from the University of Denver and is a registered Professional Engineer.  He has also served on the national 
Board of Directors of the Society of Petroleum Evaluation Engineers. 

Acreage  

The following table summarizes gross and net developed and undeveloped acreage by state at December 31, 2012.  
Net acreage is our percentage ownership of gross acreage.  Acreage in which our interest is limited to royalty and 
overriding royalty interests is excluded. 

Developed Acreage 
Net 
Gross 

 Undeveloped Acreage 
Net(2) 
Gross(2) 

California ........................................... 
Colorado ............................................. 
Louisiana ............................................ 
Michigan ............................................ 
Montana ............................................. 
North Dakota ...................................... 
Oklahoma ........................................... 
Texas .................................................. 
Utah .................................................... 
Wyoming ............................................ 
Other(1) ............................................... 

25,548 
46,454 
39,431 
141,800 
61,808 
460,297 
85,969 
260,358 
31,148 
97,964 
26,634 
Total ............................................  1,277,411 

3,606 
28,815 
7,353 
63,571 
33,754 
259,780 
54,143 
146,910 
16,016 
56,455 
9,935 

- 
137,285 
54,383 
9,291 
204,826 
382,232 
566 
149,707 
332,964 
51,581 
1,832 

- 
89,318 
49,835 
6,554 
151,473 
258,660 
175 
107,857 
179,815 
38,363 
1,266 

Total Acreage 

Gross 

25,548 
183,739 
93,814 
151,091 
266,634 
842,529 
86,535 
410,065 
364,112 
149,545 
28,466 

Net 

3,606 
118,133 
57,188 
70,125 
185,227 
518,440 
54,318 
254,767 
195,831 
94,818 
11,201 

680,338 

  1,324,667 

883,316 

  2,602,078 

  1,563,654 

_____________________ 
(1)   Other includes Alabama, Arkansas, Kansas, Mississippi, Nebraska and New Mexico. 
(2)  Out of a total of approximately 1,324,667 gross (883,316 net) undeveloped acres as of December 31, 2012, the portion of 
our net undeveloped acres that is subject to expiration over the next three years, if not successfully developed or renewed, 
is less than 12% in 2013, approximately 9% in 2014 and 21% in 2015. 

42 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Production History 

The following table presents historical information about our produced oil and gas volumes: 

Year Ended December 31, 
2011 

2012 

2010 

Oil production (MMBbl) ............................................................................................ 
NGL production (MMBbl) ......................................................................................... 
Natural gas production (Bcf) ...................................................................................... 
Total production (MMBOE) ...................................................................................... 
Daily production (MBOE/d) ...................................................................................... 
North Ward Estes field production (1) 

Oil production (MMBbl) ..................................................................................... 
NGL production (MMBbl) .................................................................................. 
Natural gas production (Bcf) ............................................................................... 
Total production (MMBOE) ............................................................................... 

Sanish field production (1) 

Oil production (MMBbl) ..................................................................................... 
NGL production (MMBbl) .................................................................................. 
Natural gas production (Bcf) ............................................................................... 
Total production (MMBOE) ............................................................................... 

Average sales prices (before the effects of hedging): 

Oil (per Bbl) ........................................................................................................$ 
NGLs (per Bbl) ...................................................................................................$ 
Natural gas (per Mcf) ..........................................................................................$ 

Average production costs: 

Production costs (per BOE) (2) ............................................................................$ 

23.1 
2.8 
25.8 
30.2 
82.5 

2.8 
0.3 
0.3 
3.2 

9.0 
1.2 
3.6 
10.8 

18.3 
2.1 
26.4 
24.8 
67.9 

2.6 
0.4 
0.4 
3.0 

6.5 
0.8 
2.2 
7.7 

17.5 
1.5 
27.4 
23.6 
64.6 

2.4 
0.3 
0.4 
2.8 

6.4 
0.4 
2.5 
7.2 

83.86 
39.36 
3.42 

11.92 

$ 
$ 
$ 

$ 

88.61 
52.38 
4.92 

11.77 

$ 
$ 
$ 

$ 

72.61 
47.33 
4.86 

10.62 

_____________________ 
(1)     The  North  Ward  Estes  and  Sanish  fields  were  our  only  fields  that  contained  15%  or  more  of  our  total  proved  reserve 

volumes as of December 31, 2012. 

(2)   Production  costs  reported  above  exclude  from  lease  operating  expenses  ad  valorem  taxes  of  $16.3  million  ($0.54  per 
BOE), $13.9 million ($0.56 per BOE) and $17.7 million ($0.75 per BOE) for the years ended December 31, 2012, 2011 
and 2010, respectively. 

Productive Wells 

The following table summarizes gross and net productive oil and natural gas wells by region at December 31, 2012.  
A  net  well  is  our  percentage  ownership  of  a  gross  well.    Wells  in  which  our  interest  is  limited  to  royalty  and 
overriding royalty interests are excluded. 

Oil Wells 

Gross 
2,916 
Rocky Mountains ................................ 
4,053 
Permian Basin ................................  
598 
Mid-Continent ................................  
Michigan ...........................................................
77 
82 
Gulf Coast .........................................................
7,726 
Total ..........................................................

Net 

832 
1,709 
386 
42 
42 
3,011 

Gross 
420 
390 
184 
1,100 
398 
2,492 

Natural Gas Wells 
Net 

227 
125 
68 
418 
78 
916 

Total Wells(1) 

Gross 
3,336 
4,443 
782 
1,177 
480 
10,218 

Net 
1,059 
1,834 
454 
460 
120 
3,927 

_____________________ 
(1)  133 wells have multiple completions.  These 133 wells contain a total of 333 completions.  One or more completions in 

the same bore hole are counted as one well. 

We have an interest in or operate 35 EOR projects, which include both secondary (waterflood) and tertiary (CO2 
injection) recovery efforts, and aggregate production from such EOR fields averaged 19.1 MBOE/d during 2012 or 
23%  of  our  2012  daily  production.    For  these  areas,  we  need  to  use  enhanced  recovery  techniques  in  order  to 
maintain oil and gas production from these fields. 

43 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Drilling Activity 

We  are  engaged  in  numerous  drilling  activities  on  properties  presently  owned, and  we  intend  to  drill or  develop 
other properties acquired in the future.  The following table sets forth our drilling activity for the last three years.  A 
dry well is an exploratory, development or extension well that proves to be incapable of producing either oil or gas 
in sufficient quantities to justify completion as an oil or gas well.  A productive well is an exploratory, development 
or  extension  well  that  is  not  a  dry  well.    The  information  below  should  not  be  considered  indicative  of  future 
performance, nor should it be assumed that there is necessarily any correlation between the number of productive 
wells drilled and quantities of reserves found. 

Productive 

Gross Wells 
Dry 

Total 

Productive 

Net Wells 
Dry 

Total 

2012: 
  Development .............................   
  Exploratory ................................   
  Total ..........................................   
2011: 
  Development .............................   
  Exploratory ................................   
  Total ..........................................   
2010: 
  Development .............................   
  Exploratory ................................   
  Total ..........................................   

324 
68 
392 

218 
60 
278 

163 
20 
183 

- 
5 
5 

3 
3 
6 

3 
3 
6 

324 
73 
397 

221 
63 
284 

166 
23 
189 

140.4 
47.8 
188.2 

93.9 
36.6 
130.5 

73.8 
10.5 
84.3 

- 
4.7 
4.7 

1.5 
3.0 
4.5 

0.7 
3.0 
3.7 

140.4 
52.5 
192.9 

95.4 
39.6 
135.0 

74.5 
13.5 
88.0 

As of December 31, 2012, 25 operated drilling rigs were active on our properties.  We were also participating in the 
drilling of nine non-operated wells.  The breakdown of our operated rigs by region is as follows: 

Region 
Rocky Mountains ............................................................................................................................................
North Ward Estes ............................................................................................................................................
Postle ..............................................................................................................................................................

Total ...........................................................................................................................................................

Drilling Rigs 

22 
2 
1 

25 

Hydraulic Fracturing 

Hydraulic  fracturing  is  a  common  practice  in  the  oil  and  gas  industry  that  is  used  to  stimulate  production  of 
hydrocarbons from tight oil and gas formations.  The process involves the injection of water, sand and chemicals 
under  pressure  into  formations  to  fracture  the  surrounding  rock  and  stimulate  production.    This  process  has 
typically  been  regulated  by  state  oil  and  gas  commissions.    However,  as  described  in  more  detail  in  Item  1. 
“Business – Regulation – Environmental Regulations – Hydraulic Fracturing” of this Annual Report on Form 10-K, 
the  EPA  has  initiated  the  regulation  of  hydraulic  fracturing;  other  federal  agencies  are  examining  hydraulic 
fracturing;  and  federal  legislation  is  pending  with  respect  to  hydraulic  fracturing.    We  have  utilized  hydraulic 
fracturing in the completion of our wells in our most active areas located in the states of North Dakota, Colorado, 
Michigan, Montana and Texas, and we plan on continuing to utilize this completion methodology.   

Proved undeveloped reserves associated with hydraulic fracture treatments consist of substantially all of our proved 
undeveloped reserves, or 136.9 MMBOE. 

In  November  2010,  we  had  a  well  control  incident  involving  one  well  in  our  Sanish  field,  whereby  the  North 
Dakota  Industrial  Commission  (“NDIC”)  filed  a  complaint  against  Whiting  alleging  the  violation  of  regulations.  
This matter resulted in us entering into a consent agreement with the NDIC, pursuant to which we paid $4,357 in 
costs, donated $15,000 to the North Dakota Abandoned Oil and Gas Well Plugging and Site Reclamation Fund, and 

44 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
agreed  to  implement  certain  operational  procedures.    Other  than  this  incident,  we  are  not  aware  of  any 
environmental incidents, citations or suits related to hydraulic fracturing operations involving oil and gas properties 
that we operate or our non-operated interests.  

In  order  to  minimize  any  potential  environmental  impact  from  hydraulic  fracture  treatments,  we  have  taken  the 
following steps: 

•     we follow fracturing and flowback procedures that comply with or exceed NDIC or other state requirements; 
•     we train all company and contract personnel, who are responsible for well preparation, fracture stimulation and 

flowback, on our procedures; 

•     we  have  implemented  the  incremental  procedures  of  running  a  well  casing  caliper;  visually  inspecting  the 
surface  joint  of  intermediate  casing;  and  if  a  lighter  wall  joint  of  casing  or  drilling  wear  is  detected,  the 
minimum burst pressure is reduced accordingly; 

•     for  wells  that  are  within  one  mile  of  major  bodies  of  water  or  locations  that  lead  to  bodies  of  water,  we 

construct sufficient berming around the well location prior to initiating fracturing operations; 

•    we run fracturing strings in certain situations when extra precaution is warranted, such as where the anticipated 
maximum treating pressure for the well is greater than the pressure rating of the intermediate casing or in areas 
located within one mile of major bodies of water; and 

•    we are constructing a facility in North Dakota to treat and dispose of flow fluids from well stimulations. 

While we do not have insurance policies in effect that are intended to provide coverage for losses solely related to 
hydraulic fracturing operations, we do have general liability and excess liability insurance policies that we believe 
would  cover  third-party  claims  related  to  hydraulic  fracturing  operations  and  associated  legal  expenses  in 
accordance with, and subject to, the terms of such policies.  

Delivery Commitments  

Our  production  sales  agreements  contain  customary  terms  and  conditions  for  the  oil  and  natural  gas  industry, 
generally provide for sales based on prevailing market prices in the area, and generally have terms of one year or 
less.  We have also entered into physical delivery contracts which require us to deliver fixed volumes of natural gas.  
As of December 31, 2012, we had delivery commitments of 4.4 Bcf (or 17% of total 2012 natural gas production) 
and  4.0  Bcf  (16%)  for  the  years  ended  December  31,  2013  and  2014,  respectively.    These  contracts  relate  to 
production  at  our  Boies  Ranch  field  in  Rio  Blanco County,  Colorado  and  our Flat  Rock  field  in  Uintah County, 
Utah.   We  believe  that  our  production  and  reserves  are  adequate  to  meet  these  delivery  commitments.    See 
“Quantitative and Qualitative Disclosure about Market Risk” in Item 7A of this Annual Report on Form 10-K for 
more information about these contracts. 

Item 3.  Legal Proceedings 

Whiting is subject to litigation claims and governmental and regulatory proceedings arising in the ordinary course 
of business.  It is management’s opinion that all claims and litigation we are involved in are not likely to have a 
material adverse effect on our consolidated financial position, cash flows or results of operations. 

Item 4.  Mine Safety Disclosures 

Not applicable. 

45 

 
 
EXECUTIVE OFFICERS OF THE REGISTRANT 

The  following  table  sets  forth  certain  information,  as  of  February  15,  2013,  regarding  the  executive  officers  of 
Whiting Petroleum Corporation: 

Name 
James J. Volker .......................................... 
James T. Brown ......................................... 
Mark R. Williams ...................................... 
Bruce R. DeBoer ........................................ 
Heather M. Duncan .................................... 
J. Douglas Lang ......................................... 
Rick A. Ross .............................................. 
David M. Seery .......................................... 
Michael J. Stevens ..................................... 
Brent P. Jensen ........................................... 

Age 
66 
60 
56 
60 
42 
63 
54 
58 
47 
43 

Position 
Chairman and Chief Executive Officer  
President and Chief Operating Officer 
Senior Vice President, Exploration and Development 
Vice President, General Counsel and Corporate Secretary 
Vice President, Human Resources 
Vice President, Reservoir Engineering and Acquisitions 
Vice President, Operations 
Vice President, Land 
Vice President and Chief Financial Officer 
Controller and Treasurer 

The following biographies describe the business experience of our executive officers: 

James J. Volker joined us in August 1983 as Vice President of Corporate Development and served in that position 
through April 1993.  In March 1993, he became a contract consultant to us and served in that capacity until August 
2000, at which time he became Executive Vice President and Chief Operating Officer.  Mr. Volker was appointed 
President and Chief Executive Officer and a director in January 2002 and Chairman of the Board in January 2004.  
Effective  January  1,  2011,  Mr.  Volker  stepped  down  as  President,  but  remains  Chairman  and  Chief  Executive 
Officer.  Mr. Volker was co-founder, Vice President and later President of Energy Management Corporation from 
1971 through 1982.  He has 41 years of experience in the oil and gas industry.  Mr. Volker has a Bachelor’s degree 
in  finance  from  the  University  of  Denver,  an  MBA  from  the  University  of  Colorado  and  has  completed  H.  K. 
VanPoolen and Associates’ course of study in reservoir engineering. 

James T. Brown joined us in May 1993 as a consulting engineer.  In March 1999, he became Operations Manager; 
in  January  2000,  he  became  Vice  President  of  Operations;  and  in  May  2007,  he  became  Senior  Vice  President.  
Effective January 1, 2011, Mr. Brown was elected President and Chief Operating Officer.  Mr. Brown has 38 years 
of oil and gas experience in the Rocky Mountains, Gulf Coast, California and Alaska.  Mr. Brown is a graduate of 
the  University  of  Wyoming  with  a  Bachelor’s  degree  in  civil  engineering  and  the  University  of  Denver  with  an 
MBA. 

Mark R. Williams joined us in December 1983 as Exploration Geologist and has been Vice President of Exploration 
and  Development  since  December  1999.    Mr.  Williams  was  elected  Senior  Vice  President,  Exploration  and 
Development effective January 1, 2011.  He has 32 years of domestic and international experience in the oil and gas 
industry.  Mr. Williams holds a Master’s degree in geology from the Colorado School of Mines and a Bachelor’s 
degree in geology from the University of Utah. 

Bruce  R.  DeBoer joined  us  as  Vice  President,  General  Counsel  and  Corporate Secretary  in January  2005.    From 
January  1997  to  May  2004,  Mr.  DeBoer  served  as  Vice  President,  General  Counsel  and  Corporate  Secretary  of 
Tom Brown, Inc., an independent oil and gas exploration and production company.  Mr. DeBoer has 33 years of 
experience in managing the legal departments of several independent oil and gas companies.  He holds a Bachelor 
of Science degree in political science from South Dakota State University and received his J.D. and MBA degrees 
from the University of South Dakota. 

Heather  M.  Duncan joined  us  in  February  2002  as  Assistant  Director  of  Human  Resources and  in January  2003 
became Director of Human Resources.  In January 2008, she was appointed Vice President of Human Resources.  
Ms. Duncan has 16 years of human resources experience in the oil and gas industry.  She holds a Bachelor of Arts 

46 

 
 
 
degree  in  anthropology  and  an  MBA  from  the  University  of  Colorado.    She  is  a  certified  Senior  Professional  in 
Human Resources. 

J. Douglas Lang joined us in December 1999 as Senior Acquisition Engineer and became Manager of Acquisitions 
and Reservoir Engineering in January 2004 and Vice President, Reservoir Engineering and Acquisitions in October 
2004.  His 39 years of acquisition and reservoir engineering experience has included staff and managerial positions 
with  Amoco,  Petro-Lewis,  General  Atlantic  Resources,  UMC  Petroleum  and  Ocean  Energy.    Mr.  Lang  holds  a 
Bachelor’s degree in petroleum engineering from the  University of Wyoming and an MBA from the  University of 
Denver.  He is a registered Professional Engineer and has served on the national Board of Directors of the Society of 
Petroleum Evaluation Engineers. 

Rick  A.  Ross  joined  us  in  March  1999  as  an  Operations  Manager.    In  May  2007,  he  became  Vice  President  of 
Operations.  Mr. Ross has 30 years of oil and gas experience, including 17 years with Amoco Production Company 
where he served in various technical and managerial positions.  Mr. Ross holds a Bachelor of Science degree in 
mechanical engineering from the South Dakota School of Mines and Technology.  He is a registered Professional 
Engineer and was a past Chairman of the North Dakota Petroleum Council. 

David M. Seery joined us as our Manager of Land in July 2004 as a result of our acquisition of Equity Oil Company, 
where he was Manager of Land and Manager of Equity’s Exploration Department, positions he had held for more than 
five  years.    He  became  our  Vice  President  of  Land  in  January  2005.    Mr.  Seery  has  32  years  of  land  experience 
including staff and managerial positions with Marathon Oil Company.  Mr. Seery holds a Bachelor of Science degree 
in business administration from the University of Montana. 

Michael  J.  Stevens  joined  us  in  May  2001  as  Controller,  became  Treasurer  in  January  2002  and  became  Vice 
President and Chief Financial Officer in March 2005.  His 26 years of oil and gas experience includes eight years of 
service  in  various  positions  including  Chief  Financial  Officer,  Controller,  Secretary  and  Treasurer  at  Inland 
Resources Inc., a company engaged in oil and gas exploration and development.  He spent seven years in public 
accounting with Coopers & Lybrand in Minneapolis, Minnesota.  He is a graduate of Mankato State University of 
Minnesota and is a Certified Public Accountant. 

Brent P. Jensen joined us in August 2005 as Controller, and he became Controller and Treasurer in January 2006.  
He was previously with PricewaterhouseCoopers L.L.P. in Houston, Texas, where he held various positions in their 
oil and gas audit practice since 1994, which included assignments of four years in Moscow, Russia and three years 
in Milan, Italy.  He has 19 years of oil and gas accounting experience and is a Certified Public Accountant.  Mr. 
Jensen holds a Bachelor of Arts degree from the University of California, Los Angeles. 

Executive  officers  are  elected  by,  and  serve  at  the  discretion  of,  the  Board  of  Directors.    There  are  no  family 
relationships between any of our directors or executive officers. 

47 

 
 
PART II 

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

Purchases of Equity Securities 

Whiting  Petroleum  Corporation’s  common  stock  is  traded  on  the  New  York  Stock  Exchange  under  the  symbol 
“WLL.”  The following table shows the high and low sale prices for our common stock (as adjusted for the two-for-
one stock split as noted below) for the periods presented. 

High 

Low 

Fiscal Year Ended December 31, 2012 

Fourth Quarter (Ended December 31, 2012) ..................................................... 
Third Quarter (Ended September 30, 2012) ...................................................... 
Second Quarter (Ended June 30, 2012) ............................................................. 
First Quarter (Ended March 31, 2012) .............................................................. 

Fiscal Year Ended December 31, 2011 

Fourth Quarter (Ended December 31, 2011) ..................................................... 
Third Quarter (Ended September 30, 2011) ...................................................... 
Second Quarter (Ended June 30, 2011) ............................................................. 
First Quarter (Ended March 31, 2011) .............................................................. 

$ 
$ 
$ 
$ 

$ 
$ 
$ 
$ 

48.87 
54.86 
58.33 
63.97 

52.38 
63.31 
75.40 
75.91 

$ 
$ 
$ 
$ 

$ 
$ 
$ 
$ 

40.19 
38.29 
35.68 
46.55 

28.87 
34.65 
52.08 
55.26 

On  January 26,  2011,  our  Board  of  Directors  approved  a  two-for-one  split  of  the  Company's  shares  of  common 
stock  to  be  effected  in  the  form  of  a  stock  dividend.  As  a  result  of  the  stock  split,  stockholders  of  record  on 
February  7,  2011  received  one  additional  share  of  common  stock  for  each  share  of  common  stock  held.  The 
additional  shares  of  common  stock  were  distributed  on  February  22,  2011.  All  common  share  and  per  share 
amounts in this Annual Report on Form 10-K for periods prior to February 2011 have been retroactively adjusted to 
reflect the stock split. 

On February 15, 2013, there were 622 holders of record of our common stock. 

We  have  not  paid  any  dividends on  our common  stock  since  we  were  incorporated  in July  2003, and  we do  not 
anticipate paying any such dividends on our common stock in the foreseeable future.  We currently intend to retain 
future earnings, if any, to finance the expansion of our business.  Our future dividend policy is within the discretion 
of our board of directors and will depend upon various factors, including our financial position, cash flows, results 
of operations, capital requirements and investment opportunities.  Except for limited exceptions, which include the 
payment of dividends on our 6.25% convertible perpetual preferred stock, our credit agreement restricts our ability 
to make any dividends or distributions on our common stock.  Additionally, the indentures governing our senior 
subordinated notes contain restrictive covenants that may limit our ability to pay cash dividends on our common 
stock and our 6.25% convertible perpetual preferred stock. 

Information relating to compensation plans under which our equity securities are authorized for issuance is set forth 
in Part III, Item 12 of this Annual Report on Form 10-K. 

The  following  information  in  this  Item 5  of  this  Annual  Report  on  Form  10-K  is  not  deemed  to  be  “soliciting 
material” or to be “filed” with the SEC or subject to Regulation 14A or 14C under the Securities Exchange Act of 
1934  or  to  the  liabilities  of  Section 18  of  the  Securities  Exchange  Act  of  1934,  and  will  not  be  deemed  to  be 
incorporated by reference into any filing under the Securities Act of 1933 or the Securities Exchange Act of 1934, 
except to the extent we specifically incorporate it by reference into such a filing. 

The following graph compares on a cumulative basis changes since December 31, 2007 in (a) the total stockholder 
return on our common stock with (b) the total return on the Standard & Poor’s Composite 500 Index and (c) the 
total  return  on  the  Dow  Jones  U.S.  Oil  Companies,  Secondary  Index.    Such  changes  have  been  measured  by 
dividing (a) the sum of (i) the amount of dividends for the measurement period, assuming dividend reinvestment, 
and (ii) the difference between the price per share at the end of and the beginning of the measurement period, by 

48 

 
 
 
 
 
 
 
 
(b) the  price  per  share  at  the  beginning  of  the  measurement  period.    The  graph  assumes  $100  was  invested  on 
December 31, 2007 in our common stock, the Standard & Poor’s Composite 500 Index and the Dow Jones U.S. Oil 
Companies, Secondary Index. 

Whiting Petroleum Corporation ..................  $ 
Standard & Poor’s Composite 500 Index ....   
Dow Jones U.S. Oil Companies, 

12/31/07 
100 
100 

12/31/08 
$ 

58 
62 

12/31/09 
124 
$ 
76 

12/31/10 
203 
$ 
86 

12/31/11 
162   
$ 
86 

12/31/12 
150 
$ 
97 

Secondary Index ..................................   

100 

59 

83 

96 

91 

95 

49 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Item 6. 

Selected Financial Data 

The consolidated statements of income and statements of cash flows information for the years ended December 31, 
2012, 2011 and 2010 and the consolidated balance sheet information at December 31, 2012 and 2011 are derived 
from our audited financial statements included elsewhere in this report.  The consolidated statements of income and 
statements  of  cash  flows  information  for  the  years  ended  December  31,  2009  and  2008  and  the  consolidated 
balance sheet information at December 31, 2010, 2009 and 2008 are derived from audited financial statements that 
are not included in this report.  Our historical results include the results from our recent acquisitions beginning on 
the following dates: proved properties in Colorado, September 1, 2010; additional interests in North Ward Estes, 
November 1, 2009 and October 1, 2009; and Flat Rock natural gas field, May 30, 2008.  

2012 

Year Ended December 31, 
2010 
(dollars in millions, except per share data) 

2011 

2009 

2008 

Consolidated Statements of Income Information: 
Revenues and other income: 

Oil, NGL and natural gas sales ...................................................$  2,137.7 
2.3 
Gain (loss) on hedging activities .................................................
29.5 
Amortization of deferred gain on sale ................................
3.4 
Gain on sale of properties ...........................................................
0.5 
Interest income and other ............................................................
2,173.4 
Total revenues and other income ............................................

$  1,860.1 
8.8 
13.9 
16.3 
0.5 
1,899.6 

$  1,475.3 
23.2 
15.6 
1.4 
0.6 
1,516.1 

$ 

917.5 
38.8 
16.6 
5.9 
0.6 
979.4 

$  1,316.5 
(107.6) 
12.1 
— 
1.1 
1,222.1 

Costs and expenses: 

Lease operating ...........................................................................
Production taxes ..........................................................................
Depreciation, depletion and amortization ................................ 
Exploration and impairment ........................................................
General and administrative .........................................................
Interest expense ...........................................................................
Loss on early extinguishment of debt ................................
Change in Production Participation Plan liability .......................
Commodity derivative (gain) loss, net ................................  

Total costs and expenses ........................................................
Income (loss) before income taxes ...................................................
Income tax expense (benefit) ...........................................................
Net income (loss) .............................................................................
Net loss attributable to noncontrolling interest ................................
Net income (loss) available to shareholders ................................ 
Preferred stock dividends(1) ..............................................................
Net income (loss) available to common shareholders ......................$ 
Earnings (loss) per common share, basic(2) ................................$ 
Earnings (loss) per common share, diluted(2) ................................$ 
Other Financial Information: 
Net cash provided by operating activities ................................ $  1,401.2 
Net cash used in investing activities .................................................$  (1,780.3) 
408.1 
Net cash provided by (used in) financing activities ..........................$ 
Capital expenditures ................................................................ $  2,171.5 

376.4 
171.6 
684.7 
167.0 
108.6 
75.2 
— 
13.8 
(85.9) 
1,511.4 
662.0 
247.9 
414.1 
0.1 
414.2 
(1.1) 
413.1 
3.51 
3.48 

305.5 
139.2 
468.2 
84.6 
85.0 
62.5 
— 
(0.9) 
(24.8) 
1,119.3 
780.3 
288.7 
491.6 
0.1 
491.7 
(1.1) 
490.6 
4.18 
4.14 

$ 
$ 
$ 

$  1,192.1 
$  (1,760.0) 
564.8 
$ 
$  1,804.3 

268.3 
103.9 
393.9 
59.4 
64.7 
59.1 
6.2 
12.1 
7.1 
974.7 
541.4 
204.8 
336.7 
— 
336.7 
(64.0) 
272.7 
2.57 
2.55 

997.3 
(914.6) 
(75.7) 
923.8 

237.3 
64.7 
394.8 
73.0 
42.3 
64.6 
— 
3.3 
262.2 
1,142.2 
(162.8) 
(55.9) 
(106.9) 
— 
(106.9) 
(10.3) 
(117.2) 
(1.18) 
(1.18) 

$ 
$ 
$ 

241.2 
87.5 
277.5 
55.3 
61.7 
65.1 
— 
32.1 
(7.1) 
813.3 
408.8 
156.7 
252.1 
— 
252.1 
— 
252.1 
2.98 
2.97 

453.8 
(523.5) 
72.1 
585.8 

$ 
766.5 
$  (1,138.5) 
366.8 
$ 
$  1,330.9 

$ 
$ 
$ 

$ 
$ 
$ 
$ 

$ 
$ 
$ 

$ 
$ 
$ 
$ 

Consolidated Balance Sheet Information: 
Total assets ......................................................................................$  7,272.4 
Long-term debt ................................................................................$  1,800.0 
Total equity ......................................................................................$  3,453.2 
_____________________ 
(1)  The year ended December 31, 2010 includes a cash premium of $47.5 million for the induced conversion of our 6.25% 

$  4,648.8 
800.0 
$ 
$  2,531.3 

$  4,029.5 
779.6 
$ 
$  2,270.1 

$  4,029.1 
$  1,239.8 
$  1,808.8 

$  6,045.6 
$  1,380.0 
$  3,029.1 

Perpetual Preferred Stock. 

(2)  On January 26, 2011, our Board of Directors approved a two-for-one split of the Company's shares of common stock to 
be effected in the  form of a stock dividend effective February 22, 2011.  Earnings (loss) per common share, basic and 
diluted for periods prior to February 2011 have been retroactively adjusted to reflect the stock split. 

50 

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

Unless  the  context  otherwise  requires,  the  terms  “Whiting,”  “we,”  “us,”  “our”  or  “ours”  when  used  in  this  Item 
refer  to  Whiting  Petroleum  Corporation,  together  with  its  consolidated  subsidiaries,  Whiting  Oil  and  Gas 
Corporation  and  Whiting  Programs,  Inc.    When  the  context  requires,  we  refer  to  these  entities  separately.    This 
document contains forward-looking statements, which give our current expectations or forecasts of future events.  
Please  refer  to  “Forward-Looking  Statements”  at  the  end  of  this  Item  for  an  explanation  of  these  types  of 
statements. 

Overview  

We  are  an  independent  oil  and  gas  company  engaged  in  exploration,  development,  acquisition  and  production 
activities primarily in the Rocky Mountains, Permian Basin, Mid-Continent, Michigan and Gulf Coast regions of 
the  United  States.    Prior  to  2006,  we  generally  emphasized  the  acquisition  of  properties  that  increased  our 
production  levels  and  provided  upside  potential  through  further  development.    Since  2006,  we  have  focused 
primarily  on  organic  drilling  activity  and  on  the  development  of  previously  acquired  properties,  specifically  on 
projects that we believe provide the opportunity for repeatable successes and production growth.  We believe the 
combination of acquisitions, subsequent development and organic drilling provides us with a broad set of growth 
alternatives  and  allows  us  to  direct  our  capital  resources  to  what  we  believe  to  be  the  most  advantageous 
investments. 

As demonstrated by our recent capital expenditure programs, we are increasingly focused on a balanced exploration 
and development program, while continuing to selectively pursue acquisitions that complement our existing core 
properties.    We  believe  that  our  significant  drilling  inventory,  combined  with  our  operating  experience  and  cost 
structure, provides us with meaningful organic growth opportunities.  Our growth plan is centered on the following 
activities: 

•  pursuing the development of projects that we believe will generate attractive rates of return; 
• 
•  maintaining a balanced portfolio of lower risk, long-lived oil and gas properties that provide stable cash flows; 

allocating a portion of our exploration and development budget to leasing and exploring prospect areas; 

and 
seeking property acquisitions that complement our core areas. 

• 

We  have  historically  acquired  operated  and  non-operated  properties  that  exceed  our  rate  of  return  criteria.    For 
acquisitions of properties with additional development and exploration potential, our focus has been on acquiring 
operated  properties  so  that  we  can  better  control  the  timing  and  implementation  of  capital  spending.    In  some 
instances, we have been able to acquire non-operated property interests at attractive rates of return that established a 
presence  in  a  new  area of interest  or  that  have complemented  our existing  operations.   We intend  to  continue to 
acquire both operated and non-operated interests to the extent we believe they meet our return criteria.  In addition, 
our  willingness  to  acquire  non-operated  properties  in  new  geographic  regions  provides  us  with  geophysical  and 
geologic data in some cases that leads to further acquisitions in the same region, whether on an operated or non-
operated basis.  We sell properties when we believe that the sales price realized will provide an above average rate 
of return for the property or when the property no longer matches the profile of properties we desire to own. 

Our  revenue,  profitability and future  growth rate  depend  on  many  factors  which  are  beyond  our  control, such as 
economic, political and regulatory developments and competition from other sources of energy.  Oil and gas prices 
historically have been volatile and may fluctuate widely in the future.  The following table highlights the quarterly 
average NYMEX price trends for crude oil and natural gas prices since the first quarter of 2011: 

51 

 
 
 
 
Crude Oil 
Natural Gas 

Q1 
$94.25 
$4.10 

Q2 
$102.55 
$4.32 

Q3 
$89.81 
$4.20 

Q4 
$94.02 
$3.54 

Q1 
$102.94 
$2.72 

Q2 
$93.51 
$2.21 

Q3 
$92.19 
$2.81 

Q4 
$88.20 
$3.41 

2011 

2012 

Lower oil and natural gas prices may not only decrease our revenues, but may also reduce the amount of oil and 
natural  gas  that  we  can  produce  economically  and  therefore  potentially  lower  our  oil  and  gas  reserves.    A 
substantial  or  extended  decline  in  oil  or  natural  gas  prices  may  result  in  impairments  of  our  proved  oil  and  gas 
properties and may materially and adversely affect our future business, financial condition, cash flows, results of 
operations, liquidity or ability to finance planned capital expenditures.  Lower oil and gas prices may also reduce 
the amount of our borrowing base under our credit agreement, which is determined at the discretion of the lenders 
and is based on the collateral value of our proved reserves that have been mortgaged to the lenders.  Alternatively, 
higher oil and natural gas prices may result in significant non-cash, mark-to-market losses being incurred on our 
commodity-based derivatives, which may in turn cause us to experience net losses. 

For  a  discussion  of  material  changes  to  our  proved,  probable  and  possible  reserves  from  December  31,  2011  to 
December  31,  2012  and  our  ability  to  convert  PUDs  to  proved  developed  reserves,  probable  reserves  to  proved 
reserves and possible reserves to probable or proved reserves, see “Reserves” in Item 2 of this Annual Report on 
Form 10-K.  Additionally, for a discussion relating to the minimum remaining terms of our leases, see “Acreage” in 
Item 2 of this Annual Report on Form 10-K, and for a discussion on our need to use enhanced recovery techniques, 
see “Productive Wells” in Item 2 of this Annual Report on Form 10-K. 

2012 Highlights and Future Considerations 

Operational Highlights.   

Sanish.  Our Sanish field in Mountrail County, North Dakota targets the Bakken and Three Forks formations.  Net 
production in the Sanish field averaged 32.6 MBOE/d for the fourth quarter of 2012, representing a 4% increase 
from 31.4 MBOE/d in the third quarter of 2012.  In 2012, net production in the Sanish field totaled 11.4 MMBOE 
(an average of 31.1 MBOE/d), representing a 40% increase from 8.1 MMBOE in 2011.  As of December 31, 2012 
we had seven drilling rigs active in the Sanish field.  Two of these rigs are drilling multiple wells from the same 
drilling location or well pad (“pad drilling”).  We plan to initiate a higher density pilot program in the Sanish field 
in the first half of 2013.  We also plan to re-fracture stimulate several wells in our Sanish field in 2013. 

Lewis & Clark/Pronghorn.  Our Lewis & Clark/Pronghorn prospects are located primarily in the Stark and Billings 
counties of North Dakota and run along the Bakken shale pinch-out in the southern Williston Basin.  In this area, 
the  Upper  Bakken  shale  is  thermally  mature,  moderately  over-pressured,  and  we  believe  that  it  has  charged 
reservoir  zones  within  the immediately  underlying  Pronghorn  Sand  and Three  Forks  formations (Middle  Bakken 
and  Lower  Bakken  Shale  is  absent).    Net  production  in  the  Lewis  &  Clark/Pronghorn  prospects  averaged  13.4 
MBOE/d in the fourth quarter of 2012, representing a 10% increase from 12.2 MBOE/d in the third quarter of 2012.  
As of December 31, 2012, we had seven drilling rigs operating in the Pronghorn prospect, making this our second 
most  active  area  in  the  Williston  Basin.    Four  of  the  rigs  working  in  the  Pronghorn  prospect  are  utilizing  pad 
drilling,  drilling  two  or  three  wells  from  each pad.   We  are  realizing  cost  efficiencies  with the  use  of  multi-well 
pads  in  the  drilling  and  completion  of  wells.    We  also  plan  to  conduct  a  higher  density  pilot  program  in  the 
Pronghorn prospect in 2013.   

We have completed the construction of our gas processing plant located south of Belfield, North Dakota, which has 
a processing capacity of 30 MMcf/d and which primarily processes production from the Pronghorn area.  Currently, 
there is inlet compression in place to process 24 MMcf/d, and as of December 31, 2012 the plant was processing 18 
MMcf/d.    In  November  2012,  we  began  connecting  other  operators’  wells  to  the  plant.    We  intend  to  add  inlet 
compression  during  2013  in  order  to  fully  utilize  the  30  MMcf/d  processing  capability.    We  are  also  currently 
installing fractionation equipment to convert NGLs into propane and butane, which end products are typically sold for 
higher realized prices in local markets  In May 2012, we sold a 50% ownership interest in the plant, gathering systems 

52 

 
 
 
 
 
and  related  facilities.    We  retained  a  50%  ownership  interest  and  will  continue  to  operate  the  Belfield  plant  and 
facilities.    Additionally,  we  completed  construction  on  an  oil  terminal  and  a  seven-mile  oil  transmission  line  to 
allow for the delivery of oil production from the Pronghorn prospect into the Bridger Four Bears oil transmission 
system.    The  use  of  this  terminal  will  reduce  our  transportation  costs  per  barrel  and  increase  our  returns  on  the 
development of this prospect.  

Hidden  Bench/Tarpon.    Our  Hidden  Bench  and  Tarpon  prospects  in  McKenzie  County,  North  Dakota  target  the 
Bakken and Three Forks formations.  In the fourth quarter of 2012, net production from the Hidden Bench/Tarpon 
prospects averaged 3.1 MBOE/d, representing a 23% increase from 2.5 MBOE/d in the third quarter of 2012.  We 
drilled a highly productive Tarpon Federal well in late 2011 in the Tarpon prospect.  Based on these results, we had 
planned to drill additional wells in Tarpon but were delayed by federal drilling permit requirements for these wells.  
During the fourth quarter of 2012, we received the required permits and drilled four additional wells in this area.  
We expect to drill most of the remaining planned Tarpon development wells during 2013.  We have implemented 
pad drilling at our Tarpon prospect and plan to drill three wells from each pad.   

Missouri  Breaks  Prospect.    Our  Missouri  Breaks  prospect,  which  is  located  in  Richland  County,  Montana  and 
McKenzie  County,  North  Dakota,  targets  the  Middle  Bakken  formation.    In  the  fourth  quarter  of  2012,  net 
production  from  the  Missouri  Breaks  prospect  averaged  1.7  MBOE/d,  representing  a  189%  increase  from  0.6 
MBOE/d in the third quarter of 2012.  We have drilled successful wells on the western and southern portions of our 
acreage.  In the fourth quarter of 2012, we completed our first well on the eastern portion of our Missouri Breaks 
prospect. 

Big Island Prospect. Our Big Island prospect, which is located in Golden Valley County, North Dakota and Wibaux 
County, Montana, targets the Red River formation.  We are using 3-D seismic interpretations to identify Red River 
drilling locations at our Big Island prospect.  We plan to use a horizontal well to test the Lower Red River “D” zone 
in 2013. 

North  Ward  Estes.    The  North  Ward  Estes  field  is  located  in  the  Ward  and  Winkler  counties  in  Texas,  and  we 
continue  to  have  significant  development  and  related  infrastructure  activity  in  this  field  since  we  acquired  it  in 
2005.    Our  activity  at  North  Ward  Estes  to  date  has  resulted  in  substantial  reserve  additions  and  production 
increases, and our expansion of the CO2 flood in this area continues to generate positive results. 

North Ward Estes has been responding positively to the water and CO2 floods that we initiated in May 2007.  We 
are  currently  injecting  CO2  in  one  of  the  largest  phases  of  our  eight-phase  project  at  North  Ward  Estes,  and  we 
anticipate a production response in early 2013.  Net production from North Ward Estes averaged 8.5 MBOE/d for 
the fourth quarter of 2012, which was consistent with production rates in the third quarter of 2012.  As of December 
31, 2012, we were injecting approximately 350 MMcf/d of CO2 into the field, over half of which is recycled.  

Postle.  The Postle field is located in Texas County, Oklahoma and produces from the Morrow sandstone.  Postle 
averaged 7.8 MBOE/d in the fourth quarter of 2012, which represents a 4% decrease from 8.2 MBOE/d in the third 
quarter of 2012.  As of December 31, 2012, we were injecting approximately 120 MMcf/d of CO2 into the field, 
over half of which is recycled. 

Big  Tex.    Our  Big  Tex  prospect  in  Pecos,  Reeves  and  Ward  counties,  Texas  targets  the  Brushy  Canyon,  Bone 
Spring and Wolfcamp horizons.  During 2013, we plan to drill three wells in the Big Tex prospect, all of which are 
expected to be horizontal Wolfcamp wells.  In late 2012, we completed a well utilizing a cemented liner and a plug 
and perf completion technique that is providing encouraging early results.  We plan to implement this completion 
strategy on the horizontal wells drilled during 2013. 

Redtail.    Our  Redtail  prospect  in  the  Denver  Julesberg  Basin  in  Weld  County,  Colorado  targets  the  Niobrara 
formation.  In 2012, we drilled 15 wells in this prospect, and we are very encouraged with the results.  We plan to 
drill up to eight Niobrara “B” wells per spacing unit and utilize pad drilling to place the wells.  The associated gas 
produced  with  the  Niobrara  oil  must  be  processed  before  being  sold,  and  we  have  therefore  initiated  the 

53 

 
 
construction of our own gas processing plant in Weld County, Colorado for this purpose.  The plant’s planned inlet 
capacity will be 15 MMcf/d.  The air permit for the plant was filed with the Colorado Department of Public Health 
and Environment in November 2012.  We have ordered the major equipment necessary to construct this plant, and 
our plan is to have the plant online in early 2014.  As of December 31, 2012, we had one drilling rig operating in 
this area, and we plan to add a second drilling rig in mid-year 2013 and a third upon completion of the plant. 

Financing  Highlights.    In  October  2012,  we  entered  into  an  amendment  to  our  existing  credit  agreement  that 
increased  our  borrowing  base  under  the  facility  from  $1.5  billion  to  $2.5  billion,  of  which  $2.0  billion  has  been 
committed  by  lenders  and  is  available  for  borrowing.    We  may  increase  the  maximum  aggregate  amount  of 
commitments  under  the  credit  agreement  from  $2.0  billion  to  $2.5  billion  if  certain  conditions  are  satisfied, 
including  the  consent  of  lenders  participating  in  the  increase.    All  other  terms  of  the  credit  agreement  remain 
unchanged. 

2013 Exploration and Development Budget.  Our current 2013 exploration and development (“E&D”) budget is 
$2,200.0  million,  which  we  expect  to  fund  substantially  with  net  cash  provided  by  our  operating  activities, 
borrowings  under  our credit facility  and  certain  oil and  gas  property  divestitures.   This represents  a 4% increase 
from  the  $2,111.5  million  incurred  on  E&D  (which  consisted  of  exploration,  development  and  acreage 
expenditures) during 2012, and based on this level of capital spending, we are forecasting production growth over 
our  2012  production  level  of  30.2  MMBOE.    We  expect  to  allocate  $1,914.5  million  of  our  2013  budget  to 
exploration and development activity, $108.0 million for land and $177.5 million for facilities.  To the extent net 
cash  provided  by  operating  activities  is  higher  or  lower  than  currently  anticipated,  we  would  adjust  our  E&D 
budget accordingly or adjust borrowings outstanding under our credit facility as needed.  Our 2013 E&D budget 
currently is allocated among our major development areas as indicated in the chart below.  Of our existing potential 
projects,  we  believe  these  present  the  opportunity  for  the  highest  return  and  most  efficient  use  of  our  capital 
expenditures. 

Development Area 
Northern Rockies ............................................................................................................................................$ 
CO2 projects (1) ................................................................................................................................................ 
Central Rockies ............................................................................................................................................... 
Non-operated ................................................................................................................................................... 
Land ................................................................................................................................................................ 
Exploration (2) .................................................................................................................................................. 
Facilities .......................................................................................................................................................... 
Well work, miscellaneous costs, other ............................................................................................................ 

1,142.2 
240.3 
135.6 
164.0 
108.0 
82.4 
177.5 
150.0 

2013 Exploration and 
Development Budget 
(In millions) 

  Total ...........................................................................................................................................................$ 
_____________________ 
(1)  2013 planned capital expenditures at our CO2 projects include $79.3 million for North Ward Estes CO2 purchases and 

2,200.0 

$8.0 million for Postle CO2 purchases. 

(2)  Comprised primarily of exploration salaries, seismic activities, lease delay rentals and exploratory drilling. 

Acquisition and Divestiture Highlights.  On March 28, 2012, we completed an initial public offering of units of 
beneficial interest in Whiting USA Trust II (“Trust II”), selling 18,400,000 Trust II units at $20.00 per unit, which 
generated  net  proceeds  of  $322.3  million  after  underwriters’  fees,  offering  expenses  and  post-close  adjustments.  
We used the net offering proceeds to repay a portion of the debt outstanding under our credit agreement.  The net 
proceeds from the sale of Trust II units to the public resulted in a deferred gain on sale of $128.2 million.   

Immediately prior to the closing of the offering, we conveyed a term net profits interest in certain of our oil and gas 
properties to Trust II in exchange for 100% of the trust’s units issued, or 18,400,000 units.  The net profits interest 
entitles  Trust  II  to  receive  90%  of  the  net  proceeds  from  the  sale  of  oil  and  natural  gas  production  from  the 
underlying properties.  The net profits interest will terminate on the later to occur of (1) December 31, 2021, or (2) 

54 

 
 
the time when 11.79 MMBOE have been produced from the underlying properties and sold.  This is the equivalent 
of 10.61 MMBOE in respect of Trust II’s right to receive 90% of the net proceeds from such reserves pursuant to 
the net profits interest.  The conveyance of the net profits interest to Trust II consisted entirely of proved reserves of 
10.61 MMBOE as of the January 1, 2012 effective date, representing 3% of our proved reserves as of December 31, 
2011 and 5% (or 4.5 MBOE/d) of our March 2012 average daily net production. 

On  May  18,  2012,  we  sold  a  50%  ownership  interest  in  our  Belfield  gas  processing  plant,  natural  gas  gathering 
system, oil gathering system and related facilities located in Stark County, North Dakota for total cash proceeds of 
$66.2 million.  We used the net proceeds from the sale to repay a portion of the debt outstanding under our credit 
agreement. 

Results of Operations 

The following table sets forth selected operating data for the periods indicated: 

2012 

Year Ended December 31, 
2011 

2010 

Net production: 

23.1 
Oil (MMBbl) ................................................................................................
2.8 
NGLs (MMBbl) ................................................................................................
Natural gas (Bcf) ................................................................................................
25.8 
30.2 
Total production (MMBOE) ................................................................

Net sales (in millions): 

Oil (1) ................................................................................................$ 
NGLs ................................................................................................
Natural gas (1) ................................................................................................
Total oil, NGL and natural gas sales ................................................................

1,940.5 
108.9 
88.3 
2,137.7 

$ 

Average sales prices: 

Oil (per Bbl) ................................................................................................
$ 
Effect of oil hedges on average price (per Bbl) ................................
$ 
Oil net of hedging (per Bbl) ................................................................
$ 
Average NYMEX price (per Bbl) ................................................................

83.86 
(1.25) 
82.61 
94.19 

NGLs (per Bbl) ................................................................................................

$ 

39.36 

Natural gas (per Mcf) ................................................................ $ 
Effect of natural gas hedges on average price (per Mcf) ................................
Natural gas net of hedging (per Mcf) ................................................................
Average NYMEX price (per Mcf) ................................................................

3.42 
0.06 
3.48 
2.79 

$ 
$ 

Cost and expenses (per BOE): 

Lease operating expenses ................................................................$ 
$ 
Production taxes ................................................................................................
$ 
Depreciation, depletion and amortization expense ................................
$ 
General and administrative expenses ................................................................

12.46 
5.68 
22.67 
3.59 

_____________________ 
(1)  Before consideration of hedging transactions. 

Year Ended December 31, 2012 Compared to Year Ended December 31, 2011 

18.3 
2.1 
26.4 
24.8 

1,621.5 
108.6 
130.0 
1,860.1 

88.61 
(1.67) 
86.94 
95.14 

52.38 

4.92 
0.04 
4.96 
4.04 

12.33 
5.62 
18.89 
3.43 

$ 

$ 

$ 

$ 
$ 

$ 

$ 

$ 
$ 

$ 
$ 
$ 
$ 

17.5 
1.5 
27.4 
23.6 

1,268.2 
74.0 
133.1 
1,475.3 

72.61 
(1.47) 
71.14 
79.55 

47.33 

4.86 
0.04 
4.90 
4.39 

11.37 
4.40 
16.69 
2.74 

$ 

$ 

$ 

$ 
$ 

$ 

$ 

$ 
$ 

$ 
$ 
$ 
$ 

Oil, NGL and Natural Gas Sales.  Our oil, NGL and natural gas sales revenue increased $277.6 million to $2,137.7 
million in 2012 compared to 2011.  Sales revenue is a function of oil and gas volumes sold and average commodity 
prices realized.  Our oil sales volumes increased 26%, and our NGL sales volumes increased 33% between periods, 
while our natural gas sales volumes decreased 2%.  The oil volume increase resulted primarily from drilling success 
at our Sanish field, Lewis & Clark/Pronghorn prospects and our Hidden Bench/Tarpon prospects.  During 2012, oil 

55 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
production from our Sanish field increased 2,475 MBbl, while oil production from our Lewis & Clark/Pronghorn 
prospects increased 2,150 MBbl compared to 2011, and oil production from our Hidden Bench/Tarpon prospects 
increased 495 MBbl over the same period in 2011.  These production increases were partially offset by the Trust II 
divestiture, which decreased oil production by 915 MBOE in 2012.  Our NGLs are generally produced concurrently 
with our crude oil volumes, resulting in a high correlation between fluctuations in our oil quantities sold and our 
NGL  quantities  sold.    As  a  result,  our  NGL  sales  volume  increases  generally  relate  to  the  same  areas  as  our  oil 
volume  increases,  such  as  our  Sanish  field,  Lewis  &  Clark/Pronghorn  prospects  and  our  Hidden  Bench/Tarpon 
prospects.    The  gas  volume  decline  between  periods  was  primarily  the  result  of  normal  field  production  decline 
across several of our areas, as well as the Trust II divestiture.  During 2012, gas production at our Flat Rock field 
decreased  1,795  MMcf,  and  gas  production  at  our  Canyon  field  decreased  645  MMcf  compared  to  2011.    In 
addition, the Trust II divestiture in March 2012 negatively impacted gas production by 1,760 MMcf during 2012.  
These gas volume declines were partially offset by increases in associated gas production of 2,035 MMcf at our 
Lewis  &  Clark/Pronghorn  prospects  and  1,500  MMcf  at  our  Sanish  field,  related  to  new  wells  drilled  and 
completed in these areas during the past twelve months. 

Partially offsetting the above crude oil and NGL production-related increases in net revenue, were decreases in the 
average sales prices realized for oil, NGLs and natural gas.  Our average price for oil before the effects of hedging 
decreased  5%  in  2012  as  compared  to 2011,  while  our  average  price for  NGLs  decreased  25%, and  our average 
price for natural gas before the effects of hedging decreased 30% between periods.   

Gain on Hedging Activities.  Our gain on hedging activities decreased $6.4 million in 2012 as compared to 2011, 
and it consisted of the following (in thousands): 

Year Ended December 31, 
2011 
2012 

Gains reclassified from AOCI on de-designated hedges ...................................... 

$ 

2,338 

$ 

8,758 

Effective  April  1,  2009,  we  elected  to  de-designate  all  of  our  commodity  derivative  contracts  that  had  been 
previously  designated  as  cash  flow  hedges,  and  we  elected  to  discontinue  all  hedge  accounting  prospectively.  
Accordingly,  each  period  we  reclassify  from  accumulated  other  comprehensive  income  (“AOCI”)  into  earnings 
unrealized gains (which were frozen in AOCI on the April 1, 2009 de-designation date) upon the expiration of these 
de-designated crude oil hedges, and we report such non-cash unrealized gains as gain on hedging activities.   

See Item 7A, “Quantitative and Qualitative Disclosures about Market Risk,” for a list of our outstanding derivatives 
as of February 6, 2013. 

Lease  Operating  Expenses.    Our  lease  operating  expenses  (“LOE”)  during  2012  were  $376.4  million,  a  $70.9 
million increase over the same period in 2011.  This rise in LOE in 2012 was primarily related to a $68.2 million 
increase in the cost of oil field goods and services and gas plant operating expenses, both of which were associated 
with  net  wells  we  added  during  the  last  twelve  months.    In  addition,  well  workover  activity  increased  to  $81.9 
million in 2012, as compared to $79.2 million in 2011, primarily due to a higher number of well workovers being 
conducted  at  our  Sanish  field  and  at  our  CO2  project  at  our  North  Ward  Estes  field.    This  increase  in  workover 
expense  was  partially  offset  by  decreases  in  the  number  of  workovers  being  conducted  in  our  Western  Texas 
district and at our Postle CO2 project. 

Our  lease  operating  expenses  on  a  BOE  basis  only  slightly  increased  during  2012.    LOE  per  BOE  amounted  to 
$12.46 during 2012, which was up from $12.33 per BOE during 2011.  This slight increase was mainly due to the 
higher  costs  of  oil  field  goods  and  services,  plant  expenses  and  workover  activity  in  2012,  as  discussed  above, 
which were largely offset by higher overall production volumes between periods.  

Production Taxes.  Our production taxes during 2012 were $171.6 million, a $32.4 million increase over the same 
period  in  2011,  which  increase  was  primarily  due  to  higher  oil,  NGL  and  natural  gas  sales  between  periods.  

56 

 
 
 
 
 
However, our production taxes are generally calculated as a percentage of oil, NGL and natural gas sales revenue 
before the effects of hedging, and this percentage on a company-wide basis was 8.0% and 7.5% for 2012 and 2011, 
respectively.  Our production tax rate of 8.0% for 2012 was greater than the rate for 2011 due to successful wells 
completed during the past twelve months in North Dakota, which has an 11.5% tax rate.  However, we attempt to 
take full advantage of production tax credits and exemptions allowed in our various jurisdictions.   

Depreciation,  Depletion  and  Amortization.    Our  depreciation,  depletion  and  amortization  (“DD&A”)  expense 
increased $216.5 million in 2012 as compared to 2011.  The components of our DD&A expense were as follows (in 
thousands): 

Year Ended December 31, 
2011 
2012 

Depletion .................................................................................................................. 
Depreciation ............................................................................................................. 
Accretion of asset retirement obligations ................................................................. 
Total .................................................................................................................. 

$ 

$ 

673,789 
3,672 
7,263 
684,724 

$ 

$ 

457,499 
2,688 
8,016 
468,203 

DD&A  increased  in  2012  primarily  due  to  $216.3  million  in  higher  depletion  expense  between  periods.    This 
increase  was  the  result  of  $121.1  million  in  higher  depletion  due  to  a  rise  in  overall  production  volumes  during 
2012 and $95.2 million in higher depletion due to an increase in our depletion rate between periods.  On a BOE 
basis, our DD&A rate of $22.67 for 2012 was 20% higher than the rate of $18.89 for 2011.  The higher DD&A rate 
was mainly due to $2,031.6 million in drilling and development expenditures during the past twelve months, which 
were partially offset by reserve additions during this same time period. 

Exploration  and  Impairment  Costs.    Our  exploration  and  impairment  costs  increased  $82.3  million  in  2012  as 
compared to 2011.  The components of our exploration and impairment costs were as follows (in thousands): 

Exploration ............................................................................................................... 

Impairment ............................................................................................................... 
Total .................................................................................................................. 

Year Ended December 31, 
2011 
2012 

$ 

$ 

59,117 
107,855 
166,972 

$ 

$ 

45,861 
38,783 
84,644 

Exploration costs increased $13.3 million during 2012 as compared to 2011 primarily due to higher exploratory dry 
hole costs.  Exploratory dry hole costs for 2012 totaled $18.4 million, primarily related to five exploratory dry holes 
drilled in the Rocky Mountains, Permian Basin and Michigan regions during 2012.  During 2011, we drilled three 
exploratory dry holes in the Rocky Mountains, Permian Basin and Gulf Coast regions totaling $4.9 million.   

Impairment  expense  in  2012  and  2011  primarily  related  to  the  amortization  of  leasehold  costs  associated  with 
individually  insignificant  unproved  properties,  and  such  amortization  resulted  in  impairment  expense  of  $54.5 
million  in  2012  as  compared  to  $34.9  million  in  2011.    Also  included  in  impairment  expense  for  2012  is  $46.9 
million  in  non-cash  impairment  charges  for  the  partial  write-down  of  proved  properties,  mainly  in  the  Rocky 
Mountains region, whose net book values exceeded their undiscounted future cash flows, whereas 2011 impairment 
expense only included $3.2 million of non-cash proved property impairment write-downs.  

57 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
General  and  Administrative  Expenses.    We  report  general  and  administrative  expenses  net  of  third-party 
reimbursements  and  internal  allocations.    The  components  of  our  general  and  administrative  expenses  were  as 
follows (in thousands): 

General and administrative expenses ....................................................................... 
Reimbursements and allocations .............................................................................. 
General and administrative expense, net ........................................................... 

$ 

$ 

Year Ended December 31, 
2011 
2012 
153,341 
199,943 
(68,356) 
(91,370) 
84,985 
108,573 

$ 

$ 

General and administrative expense before reimbursements and allocations increased $46.6 million during 2012 as 
compared to 2011 primarily due to higher employee compensation, an increase in accrued Production Participation 
Plan (the “Plan”) distributions and a $7.8 million increase in professional fees and information technology costs.  
Employee compensation increased $21.7 million in 2012 as compared to 2011 due to personnel hired during the 
past twelve months, general pay increases and higher stock compensation between periods.   In addition, accrued 
distributions under the Plan increased general and administrative expenses by $10.7 million when comparing 2012 
to 2011.  Of this increase in general and administrative expenses related to Plan distributions, $8.6 million related to 
the Trust II net profits interest divestiture, and $2.1 million related to a higher level of Plan net revenues (which 
have been reduced by lease operating expenses and production taxes pursuant to the plan formula). 

The increase in reimbursements and allocations for 2012 was primarily caused by higher salary costs and a greater 
number of field workers on operated properties.  Our general and administrative expenses as a percentage of oil, 
NGL and natural gas sales remained constant at 5% for 2012 and 2011. 

Interest Expense.  The components of our interest expense were as follows (in thousands): 

Year Ended December 31, 
2011 
2012 

Senior Subordinated Notes ....................................................................................... 
Credit agreement  ..................................................................................................... 
Amortization of debt issue costs and debt discount ................................................. 
Other ........................................................................................................................ 
Capitalized interest ................................................................................................... 
Total .................................................................................................................. 

$ 

$ 

40,250 
28,043 
9,518 
148 
(2,749) 
75,210 

$ 

$ 

40,250 
17,049 
8,682 
109 
(3,574) 
62,516 

The  increase  in  interest  expense  of  $12.7  million  between  periods  was  mainly  attributable  to  an  $11.0  million 
increase in the amount of interest incurred on our credit agreement during 2012 as compared to 2011.  Our credit 
agreement interest was higher in 2012 due to a greater amount of borrowings outstanding under this facility.  Our 
weighted  average  debt  outstanding  during  2012  was  $1,576.6  million  versus  $1,151.5  million  for  2011.    Our 
weighted average effective cash interest rate was 4.3% during 2012 compared to 5.0% during 2011. 

Commodity  Derivative  (Gain)  Loss,  Net.    All  of  our  commodity  derivative  contracts  as  well  as  our  embedded 
derivatives are marked-to-market each quarter with fair value gains and losses recognized immediately in earnings, 
as commodity derivative (gain) loss, net.  Cash flow, however, is only impacted to the extent that settlements under 
these contracts result in making or receiving a payment from the counterparty, and only cash settlement gains and 
losses  on  commodity  derivatives  (except  for  settlements  on  embedded  derivatives)  are  recorded  immediately  to 
earnings as commodity derivative (gain) loss, net.  The components of commodity derivative (gain) loss, net were 
as follows (in thousands): 

58 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Change in unrealized (gains) losses on derivative contracts .................................... 
Realized cash settlement losses ................................................................................ 
Total .................................................................................................................. 

$ 

$ 

Year Ended December 31, 
2011 
2012 
(113,395) 
27,484 
(85,911) 

$ 

$ 

(54,336) 
29,479 
(24,857) 

With  respect  to  our  open  derivative  contracts  at  December  31,  2012,  the  futures  curve  of  forecasted  commodity 
prices (“forward price curve”) for crude oil was generally below the forward price curves that were in effect when 
the  majority  of  these  contracts  were  entered  into,  resulting  in  a  net  fair  value  asset  position  at  the  end  of  2012.  
However, with respect to our open derivative contracts at December 31, 2011, the forward price curve for crude oil 
generally exceeded the forward price curves that were in effect when the majority of these contracts were entered 
into, resulting in a net fair value liability position at the end of 2011.  The change in unrealized (gains) losses on 
derivative contracts in 2012 resulted in a $113.4 million gain due to the significant downward shift in the forward 
price  curve  for  NYMEX  crude  oil  from  January  1  to  December  31,  2012  and  the  corresponding  net  fair  value 
position  shifting  from  a  liability  to  an  asset  from  January  1  to  December  31,  2012.    The  change  in  unrealized 
(gains) losses on derivative contracts in 2011 resulted in a $54.3 million gain due to a less significant downward 
shift in the same forward price curve from January 1 to December 31, 2011. 

Income Tax Expense.  Income tax expense totaled $247.9 million for 2012 as compared to $288.7 million of income 
tax for 2011, a decrease of $40.8 million that was mainly related to $118.3 million in lower pre-tax income between 
periods.   

Our effective tax rates for 2012 and 2011 differ from the U.S. statutory income tax rate primarily due to the effects 
of  state  income  taxes  and  permanent  taxable  differences.    Our  overall  effective  tax  rate  only  increased  slightly 
between periods from 37.0% for 2011 to 37.4% for 2012.   

Year Ended December 31, 2011 Compared to Year Ended December 31, 2010 

Oil, NGL and Natural Gas Sales.  Our oil, NGL and natural gas sales revenue increased $384.8 million to $1,860.1 
million in 2011 compared to 2010.  Sales revenue is a function of oil and gas volumes sold and average commodity 
prices realized.  Our oil sales volumes increased 5%, and our NGL sales volumes increased 33% between periods, 
while our natural gas sales volumes decreased 3%.  The oil volume increase resulted primarily from drilling success 
at  our  Lewis  &  Clark/Pronghorn  prospects  and  our  Hidden  Bench/Tarpon  prospects,  as  well  as  increased 
production attributable to our  CO2  project  at  North Ward  Estes.    During  2011,  oil  production from  our  Lewis & 
Clark/Pronghorn  prospects  increased  1,045  MBbl  compared  to  2010,  while  oil  production  from  our  Hidden 
Bench/Tarpon prospects increased 240 MBbl, and oil production at our North Ward Estes field increased 300 MBbl 
over  the  same  period  in  2010.    These  production  increases  were  partially  offset  by  a  decrease  in  oil  production 
volumes of 400 MBbl at our Postle field primarily due to normal oil and gas production decline at this field.  Our 
NGL production increased by 450 MBbl at our Sanish and Parshall fields in 2011 due to an increase in the number 
of  wells  connected  to  the  Robinson  Lake  gas  plant  during  the  past  twelve  months.    Gas  production  volumes 
decreased  between  periods  primarily  due  to  normal  field  production  decline  across  many  of  our  areas.  
Additionally, gas production at our Sanish and Parshall fields decreased 450 MMcf due to a large number of shut-in 
wells in this area during the second half of 2011.  These gas volume decreases were largely offset by higher gas 
production of 1,755 MMcf at our Flat Rock field, related to new wells drilled and completed in this area during the 
past twelve months.   

Also contributing to the above crude oil and NGL production-related increases in net revenue, were increases in the 
average sales prices realized for oil, NGLs and natural gas from 2010 to 2011.  Our average price for oil before the 
effects  of  hedging  increased  22%  between  periods,  while  our  average  price  for  NGLs  increased  11%,  and  our 
average price for natural gas before the effects of hedging increased 1%.   

59 

 
 
 
 
 
 
 
Gain on Hedging Activities.  Our gain on hedging activities decreased $14.4 million in 2011 as compared to 2010, 
and it consisted of the following (in thousands): 

Year Ended December 31, 
2010 
2011 

Gains reclassified from AOCI on de-designated hedges ............................................

$ 

8,758 

$ 

23,198 

Effective  April  1,  2009,  we  elected  to  de-designate  all  of  our  commodity  derivative  contracts  that  had  been 
previously  designated  as  cash  flow  hedges,  and  we  elected  to  discontinue  all  hedge  accounting  prospectively.  
Accordingly, each period we reclassify from AOCI into earnings unrealized gains (which were frozen in AOCI on 
the April 1, 2009 de-designation date) upon the expiration of these de-designated crude oil hedges, and we report 
such non-cash unrealized gains as gain on hedging activities.   

See Item 7A, “Quantitative and Qualitative Disclosures about Market Risk,” for a list of our outstanding derivatives 
as of February 6, 2013. 

Lease  Operating  Expenses.    Our  lease  operating  expenses  (“LOE”)  during  2011  were  $305.5  million,  a  $37.1 
million increase over the same period in 2010.  This rise in LOE in 2011 was related to a higher level of workover 
activity, as well as a $24.5 million increase in the cost of oil field goods and services associated with net wells we 
added during the last twelve months.  Workovers activity increased to $79.2 million in 2011, as compared to $66.6 
million  in  2010,  primarily  due  to  a  higher  number  of  well  workovers  being  conducted  on  our  two  main  CO2 
projects. 

Our lease operating expenses on a BOE basis also increased in 2011.  LOE per BOE amounted to $12.33 during 
2011,  which  was up  from  $11.37  per  BOE  during  2010.   This  increase  was  mainly  due  to  the  higher  amount  of 
workover activity in 2011, as discussed above. 

Production Taxes.  Our production taxes during 2011 were $139.2 million, a $35.3 million increase over the same 
period  in  2010,  which  increase  was  primarily  due  to  higher  oil,  NGL  and  natural  gas  sales  between  periods.  
However, our production taxes are generally calculated as a percentage of oil, NGL and natural gas sales revenue 
before the effects of hedging, and this percentage on a company-wide basis was 7.5% and 7.0% for 2011 and 2010, 
respectively.  However, we attempt to take full advantage of production tax credits and exemptions allowed in our 
various jurisdictions.   

Depreciation,  Depletion  and  Amortization.    Our  depreciation,  depletion  and  amortization  (“DD&A”)  expense 
increased $74.3 million in 2011 as compared to 2010.  The components of our DD&A expense were as follows (in 
thousands): 

Year Ended December 31, 
2010 
2011 

Depletion .................................................................................................................. 
Depreciation ............................................................................................................. 
Accretion of asset retirement obligations ................................................................. 
Total .................................................................................................................. 

$ 

$ 

457,499 
2,688 
8,016 
468,203 

$ 

$ 

384,383 
2,291 
7,223 
393,897 

DD&A  increased  in  2011  primarily  due  to  $73.1  million  in  higher  depletion  expense  between  periods.    This 
increase was the result of $51.2 million in higher depletion due to an increase in our depletion rate between periods 
and $21.9 million in higher depletion due to a rise in overall production volumes during 2011.  On a BOE basis, our 
DD&A  rate  of  $18.89  for  2011  was  13%  higher  than  the  rate  of  $16.69  for  2010.    The  higher  DD&A  rate  was 
mainly  due  to  $1,549.3  million  in  drilling  and  development  expenditures  during  the  past  twelve  months,  which 
were partially offset by reserve additions during this same time period. 

60 

 
 
 
 
 
 
 
 
 
 
 
 
Exploration  and  Impairment  Costs.    Our  exploration  and  impairment  costs  increased  $25.3  million  in  2011  as 
compared to 2010.  The components of our exploration and impairment costs were as follows (in thousands): 

Exploration ............................................................................................................... 

Impairment ............................................................................................................... 
Total .................................................................................................................. 

Year Ended December 31, 
2010 
2011 

$ 

$ 

45,861 
38,783 
84,644 

$ 

$ 

32,846 
26,525 
59,371 

Exploration  costs  increased  $13.0  million  during  2011  as  compared  to  2010  primarily  due  to  an  increase  in 
geology-related general and administrative expenses, an increase in geological and geophysical (“G&G”) activity 
and higher exploratory dry hole costs.  Geology-related general and administrative expenses increased $5.9 million 
between periods.  G&G costs, such as seismic studies, amounted to $19.0 million during 2011 as compared to $14.3 
million during 2010.  During 2011, we drilled three exploratory dry holes in the Rocky Mountains, Permian Basin 
and Gulf Coast regions totaling $4.9 million, while we drilled three exploratory dry holes in the Gulf Coast region 
totaling $3.8 million during 2010.   

Impairment  expense  in  2011  and  2010  primarily  related  to  the  amortization  of  leasehold  costs  associated  with 
individually insignificant unproved properties.  A higher amount of undeveloped leasehold costs were amortized to 
impairment on a group basis for 2011 as compared to 2010.  Also included in impairment expense for 2011 is $3.2 
million in non-cash impairment charges for the partial write-down of mainly natural gas proved properties whose 
net book values exceeded their undiscounted future cash flows, whereas 2010 impairment expense included a $5.8 
million impairment write-down of the remaining undeveloped leasehold costs related to the central Utah Hingeline 
play. 

General  and  Administrative  Expenses.    We  report  general  and  administrative  expenses  net  of  third-party 
reimbursements  and  internal  allocations.    The  components  of  our  general  and  administrative  expenses  were  as 
follows (in thousands): 

General and administrative expenses ....................................................................... 
Reimbursements and allocations .............................................................................. 
General and administrative expense, net ........................................................... 

$ 

$ 

Year Ended December 31, 
2010 
2011 
118,606 
153,341 
(53,912) 
(68,356) 
64,694 
84,985 

$ 

$ 

General and administrative expense before reimbursements and allocations increased $34.7 million during 2011 as 
compared to 2010 primarily due to higher employee compensation and an increase in accrued Plan distributions.  
Employee compensation increased $25.2 million in 2011 as compared to 2010 due to personnel hired during the 
past twelve months, general pay increases and higher stock compensation between periods.   In addition, accrued 
distributions under the Plan increased general and administrative expenses by $6.9 million when comparing 2011 to 
2010.   

The increase in reimbursements and allocations in 2011 was primarily caused by higher salary costs and a greater 
number of field workers on operated properties.  Our general and administrative expenses as a percentage of oil, 
NGL and natural gas sales increased from 4% for 2010 to 5% for 2011. 

61 

 
 
 
 
 
 
 
 
 
 
 
 
Interest Expense.  The components of our interest expense were as follows (in thousands): 

Year Ended December 31, 
2010 
2011 

Senior Subordinated Notes ....................................................................................... 
Credit agreement  ..................................................................................................... 
Amortization of debt issue costs and debt discount ................................................. 
Other ........................................................................................................................ 
Capitalized interest ................................................................................................... 
Total .................................................................................................................. 

$ 

$ 

40,250 
17,049 
8,682 
109 
(3,574) 
62,516 

$ 

$ 

42,034 
9,225 
10,592 
147 
(2,920) 
59,078 

The increase in interest expense of $3.4 million between periods was mainly attributable to a $7.8 million increase 
in the amount of interest incurred on our credit agreement during 2011 as compared to 2010.  Our credit agreement 
interest was higher in 2011 due to a greater amount of borrowings outstanding under this facility.  Our weighted 
average  debt  outstanding  during  2011  was  $1,151.5  million  versus  $739.9  million  for  2010.    However,  our 
weighted average effective cash interest rate was lower during 2011 at 5.0% compared to 6.9% during 2010.  The 
increase  in  interest  incurred  on  our  credit  agreement  was  partially  offset  by  lower  amortization  of  debt  issuance 
costs  and  debt  discounts  of  $1.9  million  and  lower  interest  of  $1.8  million  on  our  Senior  Subordinated  Notes.  
These decreases resulted from redeeming $150.0 million of 7.25% notes and $220.0 million of 7.25% notes in early 
September 2010.  Also in September 2010, we subsequently issued $350.0 million of 6.5% notes due 2018.   

Commodity  Derivative  (Gain)  Loss,  Net.    All  of  our  commodity  derivative  contracts  as  well  as  our  embedded 
derivatives are marked-to-market each quarter with fair value gains and losses recognized immediately in earnings, 
as commodity derivative (gain) loss, net.  Cash flow, however, is only impacted to the extent that settlements under 
these contracts result in making or receiving a payment from the counterparty, and only cash settlement gains and 
losses  on  commodity  derivatives  (except  for  settlements  on  embedded  derivatives)  are  recorded  immediately  to 
earnings as commodity derivative (gain) loss, net.  The components of commodity derivative (gain) loss, net were 
as follows (in thousands): 

Year Ended December 31, 
2010 
2011 

Change in unrealized (gains) losses on derivative contracts .................................... 
Realized cash settlement losses ................................................................................ 
Total .................................................................................................................. 

$ 

$ 

(54,336) 
29,479 
(24,857) 

$ 

$ 

(17,537) 
24,599 
7,062 

With respect to our open derivative contracts at December 31, 2011 and 2010, the forward price curve for crude oil 
generally exceeded the forward price curves that were in effect when the majority of these contracts were entered 
into, resulting in a net fair value liability position at the end of each respective period.  The change in unrealized 
(gains) losses on derivative contracts in 2011 resulted in a $54.3 million gain in such net liability position due to the 
significant downward shift in the forward price curve for NYMEX crude oil from January 1 to December 31, 2011.  
The change in unrealized (gains) losses on derivative contracts in 2010 resulted in a $17.5 million gain due to a less 
significant downward shift in the same forward price curve from January 1 to December 31, 2010. 

Income Tax Expense.  Income tax expense totaled $288.7 million for 2011 as compared to $204.8 million of income 
tax  for  2010,  an  increase  of  $83.9  million  that  was  mainly  related  to  $238.9  million  of  higher  pre-tax  income 
between periods.   

Our effective tax rates for 2011 and 2010 differ from the U.S. statutory income tax rate primarily due to the effects 
of  state  income  taxes  and  permanent  taxable  differences.    Our  overall  effective  income  tax  rate  decreased  from 
37.8% for 2010 to 37.0% for 2011.  This change in our effective income tax rate between periods was primarily 
attributable to recent North Dakota corporate tax legislation, which created a one-time benefit in 2011.   

62 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Liquidity and Capital Resources 

Overview.  At December 31, 2012, our debt to total capitalization ratio was 34.3%, we had $44.8 million of cash on 
hand and $3,445.0 million of equity.  At December 31, 2011, our debt to total capitalization ratio was 31.4%, we 
had $15.8 million of cash on hand and $3,020.9 million of equity.  During 2012, we generated $1,401.2 million of 
cash  provided  by  operating  activities,  an  increase  of  $209.1  million  from  2011.    Cash  provided  by  operating 
activities increased primarily due to higher crude oil and NGL production volumes in 2012.  This positive factor 
was partially offset by lower realized sales prices for oil, NGLs and natural gas and lower natural gas production 
volumes in 2012, as well as increased lease operating expenses, production taxes, general and administrative and 
cash interest expense during 2012 as compared to 2011.  See “Results of Operations” for more information on the 
impact of prices and volumes on revenues and for more information on increases in certain expenses during 2012.  
Cash  flows  from  operating  activities  plus  $420.0  million  in  net  borrowings  under  our  credit  agreement,  $322.3 
million  of  proceeds  from  the  sale  of  Trust  II  units  and  $69.2  million  of  proceeds  from  the  sale  of  oil  and  gas 
properties were used to finance $2,050.0 million of drilling and development expenditures and $121.4 million of 
cash acquisition capital expenditures paid in 2012.  The following chart details our exploration, development and 
undeveloped acreage expenditures incurred by region during 2012 (in thousands): 

Drilling and 
Development 
Expenditures(1) 
$  1,471,278 
375,816 
78,197 
10,039 
(2,103) 

1,933,227 

Rocky Mountains(2) ................................
Permian Basin ................................
Mid-Continent ................................
Gulf Coast ................................  
Michigan ................................
  Total incurred ................................
Decrease in accrued capital 

Undeveloped 
Leasehold 
Expenditures 
$ 

80,272 
14,585 
430 
23,884 
4 

Exploration 
Expenditures 
$ 

30,384 
19,753 
1,057 
2,601 
5,322 

Total 
Expenditures 
$  1,581,934 
410,154 
79,684 
36,524 
3,223 

119,175 

59,117 

2,111,519 

% of 
Total 
  75% 
  19% 
4% 
2% 
-% 
  100% 

expenditures ................................

32,164 

- 

- 

32,164 

  Total paid ................................$  1,965,391 
_________ 
(1)  For purposes of this  schedule, exploratory dry  hole costs of $18.4 million are excluded from drilling and development 
expenditures  as  reported  on  the  statement  of  cash  flows  and  instead  have  been  included  in  exploration  expenditures 
above. 

$  2,143,683 

119,175 

(2)  Proceeds from the sale of the Belfield gas plant of $66.2 million have been included above as a reduction to drilling and 

59,117 

$ 

$ 

development expenditures in the Rocky Mountains region. 

We  continually  evaluate  our  capital  needs  and  compare  them  to  our  capital  resources.    Our  current  2013  E&D 
budget is $2,200.0 million, which we expect to fund substantially with net cash provided by our operating activities, 
borrowings  under  our credit facility  and  certain  oil and  gas  property  divestitures.   This represents  a 4% increase 
from the $2,111.5 million incurred on exploration, development and acreage expenditures during 2012, and based 
on this level of capital spending, we are forecasting production growth in 2013 over our 2012 production level of 
30.2 MMBOE.  We expect to allocate $1,914.5 million of our 2013 budget to exploration and development activity, 
$108.0 million for undeveloped acreage and $177.5 million for facilities.  Although we have only budgeted $108.0 
million  for  undeveloped  leaseholds  in  2013,  we  will  continue  to  selectively  pursue  property  acquisitions  that 
complement our existing core property base.  We believe that should additional attractive acquisition opportunities 
arise or exploration and development expenditures exceed $2,200.0 million, we will be able to finance additional 
capital  expenditures  with  cash  on  hand,  cash  flows  from  operating  activities,  borrowings  under  our  credit 
agreement,  issuances  of  additional  debt  or  equity  securities,  agreements  with  industry  partners  or  divestitures  of 
certain oil and gas property interests.  Our level of exploration, development and acreage expenditures is largely 
discretionary,  and  the  amount  of  funds  devoted  to  any  particular  activity  may  increase  or  decrease  significantly 
depending on available opportunities, commodity prices, cash flows and development results, among other factors.  
We believe that we have sufficient liquidity and capital resources to execute our business plans over the next 12 
months and for the foreseeable future.  In addition, with our expected cash flow streams, commodity price hedging 

63 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
strategies,  current  liquidity  levels,  access  to  debt  and  equity  markets  and  flexibility  to  modify  future  capital 
expenditure programs, we expect to be able to fund all planned capital programs and debt repayments; comply with 
our debt covenants; and meet other obligations that may arise from our oil and gas operations. 

Credit Agreement.  Whiting Oil and Gas Corporation (“Whiting Oil and Gas”), our wholly-owned subsidiary, has a 
credit agreement with a syndicate of banks that as of December 31, 2012 had a borrowing base of $2.5 billion, of 
which $2.0 billion has been committed by lenders and is available for borrowing.  We may increase the maximum 
aggregate amount of commitments under the credit agreement from $2.0 billion to $2.5 billion if certain conditions 
are  satisfied,  including  the  consent  of  lenders  participating  in  the  increase.    As  of  December  31,  2012,  we  had 
$797.6 million of available borrowing capacity, which was net of $1,200.0 million in borrowings and $2.4 million 
in letters of credit outstanding.   

The borrowing base under the credit agreement is determined at the discretion of the lenders, based on the collateral 
value of our proved reserves that have been mortgaged to the lenders, and is subject to regular redeterminations on 
May 1 and November 1 of each year, as well as special redeterminations described in the credit agreement, in each 
case which may reduce the amount of the borrowing base.  A portion of the revolving credit facility in an aggregate 
amount not to exceed $50.0 million may be used to issue letters of credit for the account of Whiting Oil and Gas or 
other designated subsidiaries of ours.  As of December 31, 2012, $47.6 million was available for additional letters 
of credit under the agreement. 

The credit agreement provides for interest only payments until April 2016, when the entire amount borrowed is due. 
Interest accrues at our option at either (i) a base rate for a base rate loan plus the margin in the table below, where 
the base rate is defined as the greatest of the prime rate, the federal funds rate plus 0.50% or an adjusted LIBOR 
rate  plus  1.00%,  or  (ii)  an  adjusted  LIBOR  rate  for  a  Eurodollar  loan  plus  the  margin  in  the  table  below.  
Additionally, we also incur commitment fees as set forth in the table below on the unused portion of the lesser of 
the aggregate commitments of the lenders or the borrowing base. 

Ratio of Outstanding Borrowings to Borrowing Base 

Less than 0.25 to 1.0 
Greater than or equal to 0.25 to 1.0 but less than 0.50 to 1.0 
Greater than or equal to 0.50 to 1.0 but less than 0.75 to 1.0 
Greater than or equal to 0.75 to 1.0 but less than 0.90 to 1.0 
Greater than or equal to 0.90 to 1.0 

Applicable 
Margin for Base 
Rate Loans 

Applicable 
Margin for 

Eurodollar Loans  Commitment Fee 

0.50% 
0.75% 
1.00% 
1.25% 
1.50% 

1.50% 
1.75% 
2.00% 
2.25% 
2.50% 

0.375% 
0.375% 
0.50% 
0.50% 
0.50% 

The  credit  agreement  contains  restrictive  covenants  that  may  limit  our  ability  to,  among  other  things,  incur 
additional indebtedness, sell assets, make loans to others, make investments, enter into mergers, enter into hedging 
contracts, incur liens and engage in certain other transactions without the prior consent of our lenders.  Except for 
limited exceptions, which include the payment of dividends on our 6.25% convertible perpetual preferred stock, the 
credit agreement also restricts our ability to make any dividend payments or distributions on our common stock.  
These restrictions apply to all of the net assets of Whiting Oil and Gas.  The credit agreement requires us, as of the 
last day of any quarter, (i) to not exceed a total debt to the last four quarters’ EBITDAX ratio (as defined in the 
credit  agreement)  of  4.25  to  1.0  for  quarters  ending  prior  to  and  on  December  31,  2012  and  4.0  to  1.0  for  the 
quarters ending March 31, 2013 and thereafter and (ii) to have a consolidated current assets to consolidated current 
liabilities  ratio  (as  defined  in  the  credit  agreement  and  which  includes  an  add  back  of  the  available  borrowing 
capacity under the credit agreement) of not less than 1.0 to 1.0.  We were in compliance with our covenants under 
the credit agreement as of December 31, 2012. 

For  further information  on  the  interest rates  and  loan  security  related  to  our  credit  agreement, refer  to  the Long-
Term Debt footnote in the Notes to Consolidated Financial Statements. 

64 

 
 
 
 
Senior  Subordinated  Notes.    In  September  2010,  we  issued  at  par  $350.0  million  of  6.5%  Senior  Subordinated 
Notes due October 2018.  In October 2005, we issued at par $250.0 million of 7% Senior Subordinated Notes due 
February 2014.   

The indentures governing the notes restrict us from incurring additional indebtedness, subject to certain exceptions, 
unless our fixed charge coverage ratio (as defined in the indentures) is at least 2.0 to 1.  If we were in violation of 
this  covenant,  then  we  may  not  be  able  to  incur  additional  indebtedness,  including  under  Whiting  Oil  and  Gas 
Corporation’s credit agreement.  Additionally, the indentures governing the notes contain restrictive covenants that 
may  limit  our  ability  to,  among  other  things,  pay  cash  dividends,  redeem  or  repurchase  our  capital  stock  or  our 
subordinated  debt,  make  investments  or  issue  preferred  stock,  sell  assets,  consolidate,  merge  or  transfer  all  or 
substantially  all  of  the  assets  of  ours  and  our  restricted  subsidiaries  taken  as  a  whole  and  enter  into  hedging 
contracts.  These covenants may potentially limit the discretion of our management in certain respects.  We were in 
compliance with these covenants as of December 31, 2012.  However, a substantial or extended decline in oil, NGL 
or natural gas prices may adversely affect our ability to comply with these covenants in the future. 

Shelf Registration Statement.  We have on file with the SEC a universal shelf registration statement to allow us to 
offer  an  indeterminate  amount  of  securities  in  the  future.    Under  the registration  statement,  we  may  periodically 
offer  from  time  to  time  debt  securities,  common  stock,  preferred  stock,  warrants  and  other  securities  or  any 
combination of such securities in amounts, prices and on terms announced when and if the securities are offered.  
The specifics of any future offerings, along with the use of proceeds of any securities offered, will be described in 
detail in a prospectus supplement at the time of any such offering. 

Contractual Obligations and Commitments 

Schedule of Contractual Obligations.  The table below does not include our Production Participation Plan liability 
of  $143.8  million  (which  amount  comprises  both  the  long  and  short-term  portions  of  this  obligation)  as  of 
December 31, 2012, since we cannot determine with accuracy the timing or amounts of future payments other than 
the short-term portion.  The following table summarizes our obligations and commitments as of December 31, 2012 
to  make  future  payments  under  certain  contracts,  aggregated  by  category  of  contractual  obligation,  for  specified 
time periods (in thousands): 

Payments due by period 

$ 

$ 

Total 

Less than 1 
year 

Contractual Obligations 
Long-term debt (a) ...................................................... $  1,800,000 
227,143 
Cash interest expense on debt (b) ................................
23,633 
Derivative contract liability fair value (c) ...................
97,818 
Asset retirement obligations (d) ..................................
Tax sharing liability (e) ...............................................
22,526 
712,296 
Purchase obligations (f) ...............................................
187,342 
Drilling rig contracts (g) ..............................................
33,947 
Operating leases (h) .....................................................
  Total ........................................................................ $  3,104,705 
_____________________ 
(a)  Long-term debt consists of the 7% Senior Subordinated Notes due 2014, the 6.5% Senior Subordinated Notes due 2018 
and the outstanding borrowings under our credit agreement due in 2016, and assumes  no principal repayment until the 
due date of the instruments. 

3-5 years 
$  1,200,000 
52,312 
- 
12,679 
- 
183,787 
918 
10,566 
$  1,460,262 

- 
63,770 
21,955 
11,639 
1,452 
60,899 
92,823 
5,402 
$  257,940 

1-3 years 
250,000 
93,998 
1,678 
12,508 
21,074 
204,822 
93,601 
12,058 
689,739 

More than 5 
years 
$  350,000 
17,063 
- 
60,992 
- 
262,788 
- 
5,921 
$  696,764 

$ 

(b)  Cash interest expense on the 7% Senior Subordinated Notes due 2014 and the 6.5% Senior Subordinated Notes due 2018 
is estimated assuming no principal repayment until the due dates of the instruments.  Cash interest expense on the credit 
agreement is estimated assuming no principal repayment until the 2016 instrument due date and is estimated at a fixed 
interest rate of 2.0%. 

(c)  The  above  derivative  obligation  at  December  31,  2012  primarily  consists  of  (i)  a  $21.0  million  fair  value  liability  for 
derivative  contracts  we  have  entered  into  on  our  own  behalf,  primarily  in  the  form  of  costless  collars,  to  hedge  our 

65 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
exposure to crude oil price fluctuations and (ii) a $2.6 million payable to Trust II for derivative contracts that we have 
entered into but have in turn conveyed to Trust II (although these derivatives are in a fair value asset position at quarter 
end, 90% of such derivative assets are due to Trust II under the terms of the conveyance).  With respect to only a portion 
of our open derivative contracts at December 31, 2012 with certain counterparties, the forward price curve for crude oil 
generally exceeded the price curve that was in effect when these contracts were entered into, resulting in a derivative fair 
value  liability.    If  current  market  prices  are  higher  than  a  collar’s  price  ceiling  when  the  cash  settlement  amount  is 
calculated,  we  are  required  to  pay  the  contract  counterparties.    The  ultimate  settlement  amounts  under  our  derivative 
contracts are unknown, however, as they are subject to continuing market risk and commodity price volatility. 

(d)  Asset retirement obligations represent the present value of estimated amounts expected to be incurred in the future to plug 

and abandon oil and gas wells, remediate oil and gas properties and dismantle their related facilities. 

(e)  Amounts  shown  represent  the  present  value  of  estimated  payments  due  to  Alliant  Energy  based  on  projected  future 
income tax benefits attributable to an increase in our tax bases.  As a result of the Tax Separation and Indemnification 
Agreement  signed  with  Alliant  Energy,  the  increased  tax  bases  are  expected  to  result  in  increased  future  income  tax 
deductions and, accordingly, may reduce income taxes otherwise payable by us.  Under this agreement, we have agreed 
to pay  Alliant Energy 90% of the future tax benefits  we realize annually as a result of this step up in tax basis for the 
years ending on or prior to December 31, 2013.  In 2014, we will be obligated to pay Alliant Energy the present value of 
the remaining tax benefits assuming all such tax benefits will be realized in future years. 

(f)  We have four take-or-pay purchase agreements, two agreements expiring in December 2014, one agreement expiring in 
December 2017 and one agreement expiring in December 2029, whereby we have committed to buy certain volumes of 
CO2 for use in enhanced recovery projects in our Postle field in Oklahoma and our North Ward Estes field in Texas.  The 
purchase agreements are with three different suppliers.  Under the terms of the agreements, we are obligated to purchase a 
minimum daily volume of CO2 (as calculated on an annual basis) or else pay for any deficiencies at the price in effect 
when the minimum delivery was to have occurred.  In addition, we have two ship-or-pay agreements with two different 
parties,  one  expiring  in  June  2013  and  one  expiring  in  December  2017,  whereby  we  have  committed  to  transport  a 
minimum daily volume of CO2 via certain pipelines or else pay for any deficiencies at a price stipulated in the contract.  
The CO2 volumes planned for use in the enhanced recovery projects in the Postle and North Ward Estes fields currently 
exceed the minimum daily volumes specified in all of these agreements.  Therefore, we expect to avoid any payments for 
deficiencies.  The purchasing obligations reported above represent our  minimum financial commitment pursuant to the 
terms of these contracts.  However, our actual expenditures under these contracts are expected to exceed the minimum 
commitments presented above. 

(g)  We currently have 12 drilling rigs under long-term contract, of which three drilling rigs expire in 2013, six in 2014, one 
in 2015 and two in 2016.  All of these rigs are operating in the Rocky Mountains region.  As of December 31, 2012, early 
termination of the remaining contracts would require termination penalties of $145.1 million, which would be in lieu of 
paying the remaining drilling commitments of $187.3 million.  No other drilling rigs working for us are currently under 
long-term contracts or contracts that cannot be terminated at the end of the well that is currently being drilled.  Due to the 
short-term and indeterminate nature of the time remaining on rigs drilling on a well-by-well basis, such obligations have 
not been included in this table. 

(h)  We lease 172,400 square feet of administrative office space in Denver, Colorado under an operating lease arrangement 
expiring in 2018, 46,300 square feet of office space in Midland, Texas expiring in 2020 and 20,000 square feet of office 
space in Dickinson, North Dakota expiring in 2016.  In addition, we entered into a lease for several residential apartments 
in Watford City, North Dakota under an operating lease agreement expiring in 2015. 

Based on current oil and natural gas prices and anticipated levels of production, we believe that the estimated net 
cash generated from operations, together with cash on hand and amounts available under our credit agreement, will 
be adequate to meet future liquidity needs, including satisfying our financial obligations and funding our operations 
and exploration and development activities. 

New Accounting Pronouncements 

For further information on the effects of recently adopted accounting pronouncements and the potential effects of 
new accounting pronouncements, refer to the Adopted and Recently Issued Accounting Pronouncements footnote 
in the Notes to Consolidated Financial Statements. 

66 

 
 
 
 
 
 
 
Critical Accounting Policies and Estimates  

Our  discussion  of  financial  condition  and  results  of  operations  is  based  upon  the  information  reported  in  our 
consolidated financial statements.  The preparation of these statements requires us to make certain assumptions and 
estimates that affect the reported amounts of assets, liabilities, revenues and expenses as well as the disclosure of 
contingent assets and liabilities at the date of our financial statements.  We base our assumptions and estimates on 
historical experience and other sources that we believe to be reasonable at the time.  Actual results may vary from 
our estimates due to changes in circumstances, weather, politics, global economics, mechanical problems, general 
business conditions and other factors.  A summary of our significant accounting policies is detailed in Note 1 to our 
Consolidated  Financial  Statements.    We  have  outlined  below  certain  of  these  policies  as  being  of  particular 
importance to the portrayal of our financial position and results of operations and which require the application of 
significant judgment by our management. 

Successful Efforts Accounting.  We account for our oil and gas operations using the successful efforts method of 
accounting.    Under  this  method,  the  fair  value  of  property  acquired  and  all  costs  associated  with  successful 
exploratory wells and all development wells are capitalized.  Items charged to expense generally include geological 
and  geophysical  costs,  costs  of  unsuccessful  exploratory  wells  and  oil  and  gas  production  costs.    All  of  our 
properties are located within the continental United States. 

Oil  and  Natural  Gas  Reserve  Quantities.    Reserve  quantities  and  the  related  estimates  of  future  net  cash  flows 
affect  our  periodic  calculations  of  depletion,  impairment  of  our  oil  and  natural  gas  properties,  asset  retirement 
obligations,  and  our  long-term  Production  Participation  Plan  liability.    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.  Reserve quantities and future cash flows 
included in this report are prepared in accordance with guidelines established by the SEC and FASB.  The accuracy 
of our reserve estimates is a function of: 

• 
• 
• 
• 

 the quality and quantity of available data; 
 the interpretation of that data; 
 the accuracy of various mandated economic assumptions; and 
 the judgments of the persons preparing the estimates. 

External  petroleum  engineers independently  estimated  all  of the  proved,  probable and  possible reserve  quantities 
included in this annual report.  In connection with our external petroleum engineers performing their independent 
reserve estimations, we furnish them with the following information that they review: (1) technical support data, (2) 
technical analysis of geologic and engineering support information, (3) economic and production data, and (4) our 
well ownership interests.  The independent petroleum engineers, Cawley, Gillespie & Associates, Inc., evaluated 
100% of our estimated proved reserve quantities and their related pre-tax future net cash flows as of December 31, 
2012.  Estimates prepared by others may be higher or lower than our estimates.  Because these estimates depend on 
many  assumptions,  all  of  which  may  differ  substantially  from  actual  results,  reserve  estimates  may  be  different 
from the quantities of oil and gas that are ultimately recovered.  We continually make revisions to reserve estimates 
throughout the year as additional information becomes available.  We make changes to depletion rates, impairment 
calculations (when impairment indicators arise) and our Production Participation Plan liability in the same period 
that changes to reserve estimates are made. 

Depreciation, Depletion and Amortization.  Our rate of recording DD&A is dependent upon our estimates of total 
proved and proved developed reserves, which estimates incorporate various assumptions and future projections.  If 
the  estimates  of  total  proved  or  proved  developed  reserves  decline,  the  rate  at  which  we  record  DD&A  expense 
increases,  which  in  turn  reduces  our  net  income.    Such  a  decline  in  reserves  may  result  from  lower  commodity 
prices or other changes to reserve estimates, as discussed above, and we are unable to predict changes in reserve 

67 

 
 
 
quantity estimates as such quantities are dependent on the success of our exploitation and development program, as 
well as future economic conditions. 

Impairment of Oil and Gas Properties.  We review the value of our oil and gas properties whenever management 
judges that events and circumstances indicate that the recorded carrying value of properties may not be recoverable.  
Impairments  of  producing  properties  are  determined by  comparing  future  net  undiscounted  cash flows  to the  net 
book value at the end of each period.  If the net capitalized cost exceeds undiscounted future cash flows, the cost of 
the property is written down to “fair value,” which is determined using net discounted future cash flows from the 
producing  property.    Different  pricing  assumptions  or  discount  rates  could  result  in  a  different  calculated 
impairment.  In addition to proved property impairments, we provide for impairments on significant undeveloped 
properties  when  we  determine  that  the  property  will  not  be  developed  or  a  permanent  impairment  in  value  has 
occurred.  Individually insignificant unproved properties are amortized on a composite basis, based on past success, 
experience and average lease-term lives. 

Asset Retirement Obligation.  Our asset retirement obligations (“AROs”) consist primarily of estimated future costs 
associated with the plugging and abandonment of oil and gas wells, removal of equipment and facilities from leased 
acreage, and land restoration in accordance with applicable local, state and federal laws.  The discounted fair value 
of  an  ARO  liability  is  required  to  be  recognized  in  the  period  in  which  it  is  incurred,  with  the  associated  asset 
retirement cost capitalized as part of the carrying cost of the oil and gas asset.  The recognition of an ARO requires 
that management make numerous assumptions regarding such factors as the estimated probabilities, amounts and 
timing  of  settlements;  the  credit-adjusted  risk-free  rate  to  be  used;  inflation  rates;  and  future  advances  in 
technology.    In  periods  subsequent  to  the  initial  measurement  of  the  ARO,  we  must  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 cash flows.  Increases in the ARO liability due to the passage of time impact net 
income  as  accretion  expense.    The  related  capitalized  cost,  including  revisions  thereto,  is  charged  to  expense 
through DD&A over the life of the oil and gas property. 

Production  Participation  Plan.    We  have  a  Production  Participation  Plan  (“Plan”)  in  which  all  employees 
participate.  Each year, a deemed economic interest in all oil and gas properties acquired or developed during the 
year is contributed to the Plan.  The Compensation Committee of the Board of Directors, in its discretion for each 
Plan year, allocates a percentage of future net income (defined as gross revenues less production taxes, royalties 
and  direct  lease  operating  expenses)  attributable  to  such  properties  to  Plan  participants.    Once  contributed  and 
allocated, the interests (not legally conveyed) are fixed for each Plan year.  The short-term obligation related to the 
Production Participation Plan is included in the accrued liabilities and other line item in our consolidated balance 
sheets.  This  obligation is based  on cash  flows  during  the  year  and  is  paid  annually  in cash  after  year  end.   The 
calculation  of this liability  depends  in  part  on our  estimates  of  accrued revenues  and  costs  as  of the  end  of  each 
reporting period as discussed below under “Revenue Recognition.”  The vested long-term obligation related to the 
Production Participation Plan is the “Production Participation Plan liability” line item in the consolidated balance 
sheets.  This liability is derived primarily from reserve report estimates, which as discussed above, are subject to 
revision as more information becomes available.  Variances between estimates used to calculate liabilities related to 
the  Production  Participation  Plan  and  actual  sales,  costs  and  production  data  are  integrated  into  the  liability 
calculations in the period identified.  A 10% increase to the pricing assumptions used in the measurement of this 
liability at December 31, 2012 would have decreased net income before taxes by $16.3 million in 2012. 

Derivative Instruments and Hedging Activity.  We periodically enter into commodity derivative contracts to manage 
our exposure to oil and natural gas price volatility.  We use hedging to help ensure that we have adequate cash flow 
to fund our capital programs and manage returns on our acquisitions and drilling programs.  Our decision on the 
quantity and price at which we choose to hedge our production is based in part on our view of current and future 
market  conditions.    While  the  use  of  these  hedging  arrangements  limits  the  downside  risk  of  adverse  price 
movements,  they  may  also  limit  future  revenues  from  favorable  price  movements.    We  primarily  utilize costless 
collars, which are generally placed with major financial institutions.   

68 

 
 
All  derivative  instruments  are  recorded  on  the  consolidated  balance  sheet  at  fair  value,  other  than  the  derivative 
instruments  that  meet  the  “normal  purchase  normal  sales”  exclusion.    Changes  in  the  derivatives’  fair  value  are 
recognized  currently  in  earnings  unless  specific  hedge  accounting  criteria  are  met.    For  qualifying  cash  flow 
hedges, the fair value gain or loss on the derivative is deferred in accumulated other comprehensive income (loss) 
to  the  extent  the  hedge  is  effective  and  is  reclassified  to  gain  (loss)  on  hedging  activities  line  item  in  our 
consolidated statements of income in the period that the hedged production is delivered. 

We value our costless collars using industry-standard models that consider various assumptions, including quoted 
forward prices for commodities, time value, volatility factors and contractual prices for the underlying instruments, 
as well as other relevant economic measures.  The discount rate used in the fair values of these instruments includes 
a  measure  of  nonperformance  risk  by  the  counterparty  or  us,  as  appropriate.    We  utilize  the  counterparties’ 
valuations to assess the reasonableness of our valuations.  The values we report in our financial statements change 
as  these  estimates  are  revised  to  reflect  changes  in  market  conditions  (particularly  those  for  oil  and  natural  gas 
futures) or other factors, many of which are beyond our control. 

The use of hedging transactions also involves the risk that the counterparties will be unable to meet the financial 
terms of such transactions.  We evaluate the ability of our counterparties to perform at the inception of a hedging 
relationship and on a periodic basis as appropriate. 

Income Taxes and Uncertain Tax Positions.  We provide for income taxes in accordance with FASB ASC Topic 
740, Income Taxes (“ASC 740”).  We record deferred tax assets and liabilities to account for the expected future tax 
consequences  of  events that  have  been recognized  in  our financial  statements  and  our  tax  returns.    We  routinely 
assess the realizability of our deferred tax assets.  If we conclude that it is more likely than not that some portion or 
all of our deferred tax assets will not be realized, the tax asset is reduced by a valuation allowance.  We consider 
future  taxable  income  in  making  such  assessments.    Numerous  judgments  and  assumptions  are  inherent  in  the 
determination of future taxable income, including factors such as future operating conditions (particularly as related 
to prevailing oil and natural gas prices). 

ASC  740  requires  uncertain  income  tax  positions  to  meet  a  more-likely-than-not  recognition  threshold  to  be 
recognized in the financial statements.  Under ASC 740, uncertain tax positions that previously failed to meet the 
more-likely-than-not threshold should be recognized in the first subsequent financial reporting period in which that 
threshold  is  met.    Previously  recognized  uncertain  tax  positions  that  no  longer  meet  the  more-likely-than-not 
threshold  should  be  derecognized  in  the  first  subsequent  financial  reporting  period  in  which  that  threshold  is  no 
longer met.   

We  are  subject  to  taxation  in  many  jurisdictions,  and  the  calculation  of  our  tax  liabilities  involves  dealing  with 
uncertainties in the application of complex tax laws and regulations in various taxing jurisdictions.  If we ultimately 
determine  that  the  payment  of  these  liabilities  will  be  unnecessary,  we  reverse  the  liability  and  recognize  a  tax 
benefit during the period in which we determine the liability no longer applies.  Conversely, we record additional 
tax  charges  in  a  period  in  which  we  determine  that  a  recorded  tax  liability  is  less  than  we  expect  the  ultimate 
assessment to be. 

Revenue  Recognition.    We  predominantly  derive  our  revenue  from  the  sale  of  produced  oil,  NGLs  and  gas.  
Revenue is recorded in the month the product is delivered to the purchaser.  We receive payment from one to three 
months after delivery.  At the end of each month, we estimate the amount of production delivered to purchasers and 
the price we will receive.  Variances between our estimated revenue and actual payment are recorded in the month 
the payment is received.  However, differences have been and are insignificant. 

Accounting  for  Business  Combinations.    Our  business  has  grown  substantially  through  acquisitions,  and  our 
business  strategy  is  to  continue  to  pursue  acquisitions  as  opportunities  arise.    We  have  accounted  for  all  of  our 
business combinations to date using the purchase method, which is the only method permitted under FASB ASC 
Topic 805, Business Combinations, and involves the use of significant judgment.   

69 

 
 
Under the purchase method of accounting, a business combination is accounted for at a purchase price based upon 
the fair value of the consideration given.  The assets and liabilities acquired are measured at their fair values, and 
the purchase price is allocated to the assets and liabilities based upon these fair values.  The excess of the cost of an 
acquired  entity,  if  any,  over  the  net  amounts assigned  to  assets  acquired  and liabilities  assumed  is  recognized  as 
goodwill.  The excess of the fair value of assets acquired and liabilities assumed over the cost of an acquired entity, 
if any, is recognized immediately to earnings as a gain from bargain purchase. 

Determining the fair values of the assets and liabilities acquired involves the use of judgment, since some of the 
assets and liabilities acquired do not have fair values that are readily determinable.  Different techniques may be 
used to determine fair values, including market prices (where available), appraisals, comparisons to transactions for 
similar assets and liabilities, and present value of estimated future cash flows, among others.  Since these estimates 
involve the use of significant judgment, they can change as new information becomes available. 

The  business  combinations  completed  during  the  prior  three  years  consisted  of  oil  and  gas  properties.    The 
consideration we have paid to acquire these properties or companies was entirely allocated to the fair value of the 
assets  acquired  and  liabilities  assumed  at  the  time  of  acquisition.    Consequently,  there  was  no  goodwill  nor  any 
bargain purchase gains recognized on any of our business combinations. 

Effects of Inflation and Pricing  

We experienced increased costs during 2011 and 2012 due to increased demand for oil field products and services.  
The oil and gas industry is very cyclical, and the demand for goods and services of oil field companies, suppliers 
and others associated with the industry put extreme pressure on the economic stability and pricing structure within 
the industry.  Typically, as prices for oil and natural gas increase, so do all associated costs.  Conversely, in a period 
of  declining  prices,  associated  cost  declines  are  likely  to  lag  and  not  adjust  downward  in  proportion  to  prices.  
Material  changes  in  prices  also  impact  the  current  revenue  stream,  estimates  of  future  reserves,  borrowing  base 
calculations  of  bank  loans,  depletion  expense,  impairment  assessments  of  oil  and  gas  properties,  and  values  of 
properties  in  purchase  and  sale  transactions.    Material  changes  in  prices  can  impact  the  value  of  oil  and  gas 
companies and their ability to raise capital, borrow money and retain personnel.  While we do not currently expect 
business costs to materially increase, higher prices for oil and natural gas could result in increases in the costs of 
materials, services and personnel. 

Forward-Looking Statements 

This  report  contains  statements  that  we  believe  to  be  “forward-looking  statements”  within  the  meaning  of  the 
Private  Securities  Litigation  Reform  Act  of  1995.    All  statements  other  than  historical  facts,  including,  without 
limitation, statements regarding our future financial position, business strategy, projected revenues, earnings, costs, 
capital expenditures and debt levels, and plans and objectives of management for future operations, are forward-
looking  statements.    When  used  in  this  report,  words  such  as  we  “expect,”  “intend,”  “plan,”  “estimate,” 
“anticipate,” “believe” or “should” or the negative thereof or variations thereon or similar terminology are generally 
intended  to  identify  forward-looking  statements.    Such  forward-looking  statements  are  subject  to  risks  and 
uncertainties  that  could  cause  actual  results  to  differ  materially  from  those  expressed  in,  or  implied  by,  such 
statements. 

These risks and uncertainties include, but are not limited to:  declines in oil, NGL or natural gas prices; our level of 
success  in  exploration,  development  and  production  activities;  adverse  weather  conditions  that  may  negatively 
impact  development  or  production  activities;  the  timing  of  our  exploration  and  development  expenditures;  our 
ability to obtain sufficient quantities of CO2 necessary to carry out our enhanced oil recovery projects; inaccuracies 
of our reserve estimates or our assumptions underlying them; revisions to reserve estimates as a result of changes in 
commodity prices; risks related to our level of indebtedness and periodic redeterminations of the borrowing base 
under  our  credit  agreement;  our  ability  to  generate  sufficient  cash  flows  from  operations  to  meet  the  internally 
funded portion of our capital expenditures budget; our ability to obtain external capital to finance exploration and 
development  operations  and  acquisitions;  federal  and  state  initiatives  relating  to  the  regulation  of  hydraulic 

70 

 
 
fracturing; the potential impact of federal debt reduction initiatives and tax reform legislation being considered by 
the U.S. Federal government that could have a negative effect on the oil and gas industry; impacts of the global 
recession  and  tight  credit  markets;  our  ability  to  identify  and  complete  acquisitions  and  to  successfully  integrate 
acquired businesses; unforeseen underperformance of or liabilities associated with acquired properties; our ability 
to  successfully  complete  potential  asset  dispositions  and  the  risks  related  thereto;  the  impacts  of  hedging  on  our 
results  of  operations;  failure  of  our  properties  to  yield  oil  or  gas  in  commercially  viable  quantities;  uninsured  or 
underinsured  losses  resulting  from  our  oil  and  gas  operations;  our  inability  to  access  oil  and  gas  markets  due  to 
market  conditions  or  operational  impediments;  the  impact  and  costs  of  compliance  with  laws  and  regulations 
governing our oil and gas operations; our ability to replace our oil and natural gas reserves; any loss of our senior 
management  or  technical  personnel;  competition  in  the  oil  and  gas  industry  in  the  regions  in  which  we  operate; 
risks  arising  out  of  our  hedging  transactions;  and  other  risks  described  under  the  caption  “Risk  Factors”  in  this 
Annual  Report  on  Form  10-K.    We  assume  no  obligation,  and  disclaim  any  duty,  to  update  the  forward-looking 
statements in this Annual Report on Form 10-K. 

71 

 
 
Item 7A.  Quantitative and Qualitative Disclosures about Market Risk 

Commodity Price Risk 

The price we receive for our oil and gas production heavily influences our revenue, profitability, access to capital 
and future rate of growth.  Crude oil and natural gas are commodities, and therefore, their prices are subject to wide 
fluctuations in response to relatively minor changes in supply and demand.  Historically, the markets for oil and gas 
have been volatile, and these markets will likely continue to be volatile in the future.  The prices we receive for our 
production depend on numerous factors beyond our control.  Based on 2012 production, our income before income 
taxes  for  2012  would  have  moved  up  or  down  $194.0  million  for  each  10%  change  in  oil  prices  per  Bbl,  $10.9 
million for each 10% change in NGL prices per Bbl and $8.8 million for each 10% change in natural gas prices per 
Mcf. 

We periodically enter into derivative contracts to achieve a more predictable cash flow by reducing our exposure to 
oil  and  natural  gas  price  volatility.    Our  derivative  contracts  have  traditionally  been  costless  collars,  although  we 
evaluate other forms of derivative instruments as well.  Currently, we do not apply hedge accounting, and therefore all 
changes in commodity derivative fair values are recorded immediately to earnings.  Recognition of derivative cash 
settlement  gains  and  losses  in  the  consolidated  statements  of  income  occurs  in  the  period  that  hedged  production 
volumes are sold, and the related hedge contract expires. 

Commodity Derivative Contracts—Our outstanding hedges as of February 6, 2013 are summarized below: 

Whiting Petroleum Corporation 

Derivative 
Instrument 
Collars 

Three-way collars(1) 

Commodity 
Crude Oil 
Crude Oil 
Crude Oil 
Crude Oil 
Crude Oil 
Crude Oil 
Crude Oil 
Crude Oil 
Crude Oil 

Period 
01/2013 to 03/2013 
04/2013 to 06/2013 
07/2013 to 09/2013 
10/2013  
11/2013  
01/2013 to 03/2013 
04/2013 to 06/2013 
07/2013 to 09/2013 
10/2013 to 12/2013 

Monthly Volume 
(Bbl) 
290,000 
290,000 
290,000 
290,000 
190,000 
910,000 
1,040,000 
1,040,000 
1,040,000 

Weighted Average 
NYMEX Floor/Ceiling 
$47.67/$90.21 
$47.67/$90.21 
$47.67/$90.21 
$47.67/$90.21 
$47.22/$85.06 
$70.00/$85.00/$114.80 
$71.25/$85.63/$113.95 
$71.25/$85.63/$113.95 
$71.25/$85.63/$113.95 

_____________________ 
(1)  A three-way collar is a combination of options: a sold call, a purchased put and a sold put.  The sold call establishes a 
maximum price (ceiling) we will receive for the volumes under contract.  The purchased put establishes a minimum price 
(floor), unless the market price falls below the sold put (sub-floor), at which point the minimum price would be NYMEX 
plus the difference between the purchased put and the sold put strike price.   

Fixed-price Natural Gas Contracts.  We have various fixed-price gas sales contracts with end users for a portion of 
the natural gas we produce in Colorado and Utah.  Our future production volumes projected to be sold under these 
fixed-price contracts as of February 6, 2013 are summarized below: 

Commodity 
Natural Gas 
Natural Gas 
Natural Gas 
Natural Gas 
Natural Gas 
Natural Gas 
Natural Gas 
Natural Gas 

Period 
01/2013 to 03/2013 
04/2013 to 06/2013 
07/2013 to 09/2013 
10/2013 to 12/2013 
01/2014 to 03/2014 
04/2014 to 06/2014 
07/2014 to 09/2014 
10/2014 to 12/2014 

72 

Monthly Volume 
(MMBtu) 
360,000 
364,000 
368,000 
368,000 
330,000 
333,667 
337,333 
337,333 

Weighted Average Price 
Per MMBtu 
$5.47 
$5.47 
$5.47 
$5.47 
$5.49 
$5.49 
$5.49 
$5.49 

 
 
 
 
 
 
 
 
 
 
Commodity Derivatives Conveyed to Whiting USA Trust II.  In connection with our conveyance on March 28, 2012 
of a term net profits interest to Whiting USA Trust II (“Trust II”), the rights to any future hedge payments we make 
or  receive  on  certain  of  our  derivative  contracts,  representing  1,030  MBbl  of  crude  oil from  2013  through  2014, 
have  been  conveyed  to  Trust  II,  and  therefore  such  payments  will  be  included  in  Trust  II’s  calculation  of  net 
proceeds.    Under  the  terms  of  the  aforementioned  conveyance,  we  retain  10%  of  the  net  proceeds  from  the 
underlying properties.  This results in third-party public holders of Trust II units receiving 90%, while we retain 
10%,  of the  future  economic  results  of  such  hedges.    No  additional  hedges  are  allowed  to  be  placed  on Trust  II 
assets. 

The table below summarizes all of the outstanding costless collars that we entered into and then in turn conveyed, 
as  described  in  the  preceding  paragraph, to Trust  II  (of  which  we retain  10%  of  the  future economic results  and 
third-party public holders of Trust II units receive 90% of the future economic results): 

Conveyed to Whiting USA Trust II 

Derivative 
Instrument 
Collars 

Commodity 
Crude Oil 
Crude Oil 
Crude Oil 
Crude Oil 
Crude Oil 
Crude Oil 
Crude Oil 
Crude Oil 

Period 
01/2013 to 03/2013 
04/2013 to 06/2013 
07/2013 to 09/2013 
10/2013 to 12/2013 
01/2014 to 03/2014 
04/2014 to 06/2014 
07/2014 to 09/2014 
10/2014 to 12/2014 

Monthly Volume 
(Bbl) 
45,600 
45,500 
44,500 
43,400 
42,500 
41,500 
40,600 
39,700 

NYMEX Floor/Ceiling 
$80.00/$122.50 
$80.00/$122.50 
$80.00/$122.50 
$80.00/$122.50 
$80.00/$122.50 
$80.00/$122.50 
$80.00/$122.50 
$80.00/$122.50 

The collared hedges shown above (excluding the fixed-price natural gas contracts) have the effect of providing a 
protective floor while allowing us to share in upward pricing movements.  Consequently, while these hedges are 
designed  to  decrease  our  exposure  to  price  decreases,  they  also  have  the  effect  of  limiting  the  benefit  of  price 
increases above the ceiling.  For the crude oil hedges outstanding as of December 31, 2012, a hypothetical upward 
or downward shift of 10% per Bbl in the NYMEX forward curve as of December 31, 2012 would cause a decrease 
or increase, respectively, of $51.0 million in our commodity derivative gain.   

Embedded  Commodity  Derivative  Contracts—The  price  we  pay  for  oil  field  products  and  services  significantly 
impacts our profitability, reserve estimates, access to capital and future growth rate.  Typically, as prices for oil and 
natural  gas  increase,  so  do  all  associated  costs.    We  have  entered  into  certain  contracts  for  oil  field  goods  and 
services with price adjustment clauses that are linked to changes in NYMEX crude oil prices, in order to reduce our 
exposure to paying higher than the market rates for these goods and services in a climate of declining oil prices.  
We have determined that the portions of these contracts linked to NYMEX oil prices are not clearly and closely 
related  to  the  host  contracts,  and  we  have  therefore  bifurcated  these  embedded  pricing  features  from  their  host 
contracts  and  reflected  them  at  fair  value  in  the  consolidated  financial  statements.    These  embedded  commodity 
derivative contracts have not been designated as hedges, and therefore all changes in fair value since inception have 
been recorded immediately to earnings. 

Drilling Rig Contracts.  As of December 31, 2012, we had two contracts with drilling rig companies, whereby the 
rig  day  rates  increased  or  decreased  along  with  changes  in  the  price  of  NYMEX  crude  oil.    These  drilling  rig 
contracts have termination dates of April 2014 and September 2014.  For these embedded commodity derivative 
contracts, a hypothetical upward or downward shift of 10% per Bbl in the NYMEX forward curve as of December 
31, 2012 would cause a decrease or increase, respectively, of $0.9 million in our commodity derivative (gain) loss. 

CO2 Purchase Contract.  In May 2011, we entered into a long-term contract to purchase CO2 from 2015 through 
2029 for use in our EOR project at our North Ward Estes field in Texas.  The price per Mcf of CO2 purchased under 
this  agreement  increases  or  decreases  as the  average price  of  NYMEX  crude oil  likewise  increases  or decreases.  
For this embedded commodity derivative contract, a hypothetical upward or downward shift of 10% per Bbl in the 

73 

 
 
 
 
 
 
 
 
 
NYMEX forward curve as of December 31, 2012 would cause a decrease or increase, respectively, of $14.4 million 
in our commodity derivative (gain) loss. 

Interest Rate Risk 

Market  risk  is  estimated  as  the  change  in  fair  value  resulting  from  a  hypothetical  100  basis  point  change  in  the 
interest  rate  on  the  outstanding  balance  under  our  credit  agreement.    Our  credit  agreement  allows  us  to  fix  the 
interest rate for all or a portion of the principal balance for a period up to six months.  To the extent that the interest 
rate is fixed, interest rate changes affect the instrument’s fair market value but do not impact results of operations or 
cash flows.  Conversely, for the portion of the credit agreement that has a floating interest rate, interest rate changes 
will not affect the fair market value but will impact future results of operations and cash flows.  Changes in interest 
rates do not affect the amount of interest we pay on our fixed-rate Senior Subordinated Notes.  At December 31, 
2012, our outstanding principal balance under our credit agreement was $1,200.0 million, and the weighted average 
interest  rate  on  the  outstanding  principal  balance  was  2.0%.    At  December 31,  2012,  the  carrying  amount 
approximated fair market value.  Assuming a constant debt level of $1,200.0 million, the cash flow impact resulting 
from a 100 basis point change in interest rates during periods when the interest rate is not fixed would be $11.1 
million over a 12-month time period. 

74 

 
 
Item 8. 

Financial Statements and Supplementary Data 

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS 

Report of Independent Registered Public Accounting Firm ................................................................................ 76 
Consolidated Balance Sheets as of December 31, 2012 and 2011 ...................................................................... 77 
Consolidated Statements of Income for the Years Ended December 31, 2012, 2011 and 2010 ......................... 78 
Consolidated Statements of Comprehensive Income for the Years Ended December 31, 2012, 

2011 and 2010 ............................................................................................................................................. 79 
Consolidated Statements of Cash Flows for the Years Ended December 31, 2012, 2011 and 2010 ................... 80 
Consolidated Statements of Equity for the Years Ended December 31, 2012, 2011 and 2010 ........................... 82 
Notes to Consolidated Financial Statements........................................................................................................ 83 

75 

 
 
 
 
 
 
 
REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM 

To the Board of Directors and Stockholders of 
Whiting Petroleum Corporation 
Denver, Colorado 

We have audited the accompanying consolidated balance sheets of Whiting Petroleum Corporation and subsidiaries 
(the  "Company")  as  of  December  31,  2012  and  2011,  and  the  related  consolidated  statements  of  income, 
comprehensive income, cash flows, and equity for each of the three years in the period ended December 31, 2012.  
Our audits also included the financial statement schedule listed in the Index at Item 15. These financial statements 
and  financial  statement  schedule  are  the  responsibility  of  the  Company's  management.  Our  responsibility  is  to 
express an opinion on the financial statements and financial statement schedule based on our audits. 

We  conducted  our  audits  in  accordance  with  the  standards  of  the  Public  Company  Accounting  Oversight  Board 
(United States).  Those standards require that we plan and perform the audit to obtain reasonable assurance about 
whether the financial statements are free of material misstatement.  An audit includes examining, on a test basis, 
evidence supporting the amounts and disclosures in the financial statements.  An audit also includes assessing the 
accounting  principles  used  and  significant  estimates  made  by  management,  as  well  as  evaluating  the  overall 
financial statement presentation. We believe that our audits provide a reasonable basis for our opinion. 

In our opinion, such consolidated financial statements present fairly, in all material respects, the financial position 
of  Whiting  Petroleum  Corporation  and  subsidiaries  as  of  December  31,  2012  and  2011,  and  the  results  of  their 
operations and their cash flows for each of the three years in the period ended December 31, 2012, in conformity 
with accounting principles generally accepted in the United States of America. Also, in our opinion, such financial 
statement  schedule,  when  considered  in  relation  to  the  basic  consolidated  financial  statements  taken  as  a  whole, 
presents fairly, in all material respects, the information set forth therein. 

We  have  also  audited,  in  accordance  with  the  standards  of  the  Public  Company  Accounting  Oversight  Board 
(United  States),  the  Company's  internal  control  over  financial  reporting  as  of  December  31,  2012,  based  on  the 
criteria  established  in  Internal  Control—Integrated  Framework  issued  by  the  Committee  of  Sponsoring 
Organizations  of  the  Treadway  Commission  and  our  report  dated  February  28,  2013  expressed  an  unqualified 
opinion on the Company's internal control over financial reporting. 

/s/ DELOITTE & TOUCHE LLP 

Denver, Colorado 
February 28, 2013 

76 

 
 
 
 
 
 
 
 
 
 
 
WHITING PETROLEUM CORPORATION 
CONSOLIDATED BALANCE SHEETS 
(In thousands, except share and per share data) 

December 31, 

2012 

2011 

ASSETS 
Current assets: 

Cash and cash equivalents ................................................................................................ 
Accounts receivable trade, net .......................................................................................... 
Prepaid expenses and other .............................................................................................. 
Total current assets ..................................................................................................... 

$ 

44,800 
318,265 
21,347 
384,412 

Property and equipment: 

Oil and gas properties, successful efforts method: 

Proved properties ........................................................................................................ 
Unproved properties.................................................................................................... 
Other property and equipment .......................................................................................... 
Total property and equipment ..................................................................................... 
Less accumulated depreciation, depletion and amortization ............................................ 
Total property and equipment, net.................................................................................... 
Debt issuance costs............................................................................................................... 
Other long-term assets .......................................................................................................... 
TOTAL ASSETS ................................................................................................................ 

LIABILITIES AND EQUITY 
Current liabilities: 

Accounts payable trade .................................................................................................... 
Accrued capital expenditures ........................................................................................... 
Accrued liabilities and other............................................................................................. 
Revenues and royalties payable ....................................................................................... 
Taxes payable ................................................................................................................... 
Derivative liabilities ......................................................................................................... 
Deferred income taxes ...................................................................................................... 
Total current liabilities ................................................................................................ 
Long-term debt ..................................................................................................................... 
Deferred income taxes .......................................................................................................... 
Derivative liabilities ............................................................................................................. 
Production Participation Plan liability .................................................................................. 
Asset retirement obligations ................................................................................................. 
Deferred gain on sale ............................................................................................................ 
Other long-term liabilities .................................................................................................... 
Total liabilities ............................................................................................................ 
Commitments and contingencies .......................................................................................... 
Equity: 

Preferred stock, $0.001 par value, 5,000,000 shares authorized; 6.25% convertible 
perpetual preferred stock, 172,391 shares issued and outstanding as of December 
31, 2012 and 2011, aggregate liquidation preference of $17,239,100 at December 
31, 2012 ........................................................................................................................ 

Common stock, $0.001 par value, 300,000,000 shares authorized; 118,582,477 issued 
and 117,631,451 outstanding as of December 31, 2012, 118,105,279 issued and 
117,380,884 outstanding as of December 31, 2011 ...................................................... 
Additional paid-in capital ................................................................................................. 
Accumulated other comprehensive income (loss) ............................................................ 
Retained earnings ............................................................................................................. 
Total Whiting shareholders’ equity ............................................................................. 
Noncontrolling interest ............................................................................................................ 
Total equity ................................................................................................................. 
TOTAL LIABILITIES AND EQUITY ............................................................................ 

See notes to consolidated financial statements. 

$ 

$ 

$ 

77 

$ 

$ 

$ 

15,811 
262,515  
20,377  
298,703  

7,221,550  
354,774  
150,933  
7,727,257  
(2,088,517) 
5,638,740  
33,306  
74,860  
6,045,609 

56,673 
142,827  
157,214  
103,894  
31,195  
73,647  
1,584  
567,034  
1,380,000  
823,643  
47,763  
80,659  
61,984  
29,619  
25,776  
3,016,478  

8,849,515 
362,483 
141,738 
9,353,736 
(2,590,203) 
6,763,533 
28,748 
95,726 
7,272,419 

131,370 
110,663 
180,622 
149,692 
33,283 
21,955 
9,394 
636,979 
1,800,000 
1,063,681 
1,678 
94,483 
86,179 
110,395 
25,852 
3,819,247  

- 

- 

119 
1,566,717 
(1,236) 
1,879,388 
3,444,988 
8,184 
3,453,172 
7,272,419 

$ 

118  
1,554,223  
240  
1,466,276 
3,020,857 
8,274  
3,029,131 
6,045,609 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
WHITING PETROLEUM CORPORATION 
CONSOLIDATED STATEMENTS OF INCOME 
(In thousands, except per share data) 

Year Ended December 31, 
2011 

2010 

2012 

REVENUES AND OTHER INCOME: 

Oil, NGL and natural gas sales ..............................................................  $  2,137,714    $  1,860,146   $  1,475,288 
Gain on hedging activities ......................................................................   
23,198 
15,613 
Amortization of deferred gain on sale ....................................................   
1,388 
Gain on sale of properties ......................................................................   
612 
Interest income and other .......................................................................   
1,516,099 
Total revenues and other income ....................................................   

8,758  
13,937  
16,313  
468  
1,899,622  

2,338 
29,458 
3,423 
519 
2,173,452 

COSTS AND EXPENSES: 

Lease operating ......................................................................................   
Production taxes .....................................................................................   
Depreciation, depletion and amortization ..............................................   
Exploration and impairment ...................................................................   
General and administrative ....................................................................   
Interest expense ......................................................................................   
Loss on early extinguishment of debt ....................................................   
Change in Production Participation Plan liability ..................................   
Commodity derivative (gain) loss, net ...................................................   
Total costs and expenses .................................................................   

376,424 
171,625 
684,724 
166,972 
108,573 
75,210 
- 
13,824 
(85,911) 
1,511,441 

305,487  
139,190  
468,203  
84,644  
84,985  
62,516  
- 
(865) 
(24,857) 
1,119,303  

268,348 
103,880 
393,897 
59,371 
64,694 
59,078 
6,235 
12,091 
7,062 
974,656 

INCOME BEFORE INCOME TAXES ....................................................   

662,011 

 780,319  

541,443 

INCOME TAX EXPENSE (BENEFIT): 

Current ...................................................................................................   
Deferred .................................................................................................   
Total income tax expense ................................................................   

 (669) 
 248,581 
247,912 

NET INCOME .............................................................................................   
Net loss attributable to noncontrolling interest ......................................   

414,099 
90 

NET INCOME AVAILABLE TO SHAREHOLDERS ...........................   
Preferred stock dividends and inducement premium .............................   

414,189 
(1,077) 

 3,853  
 284,838  
 288,691  

491,628  
59  

491,687  
(1,077) 

4,979 
199,811 
204,790 

336,653 
- 

336,653 
(63,970) 

NET INCOME AVAILABLE TO COMMON SHAREHOLDERS .......  $ 

413,112 

$ 

490,610 

$ 

272,683 

EARNINGS PER COMMON SHARE (1): 

Basic .......................................................................................................  $ 
Diluted ...................................................................................................  $ 

3.51 
3.48 

$ 
$ 

4.18 
4.14 

$ 
$ 

2.57 
2.55 

WEIGHTED AVERAGE SHARES OUTSTANDING (1): 

Basic .......................................................................................................   
Diluted ...................................................................................................   

117,601 
119,028 

117,345 
118,668 

106,338 
107,846 

(1)  All share and per share amounts have been retroactively restated for the 2010 period to reflect the Company’s two-for-one stock split in 

February 2011, as described in Note 8 to these consolidated financial statements. 

See notes to consolidated financial statements. 

78 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
WHITING PETROLEUM CORPORATION 
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME 
(In thousands) 

Year Ended December 31, 
2011 

2010 

2012 

NET INCOME ............................................................................................. 

$ 

414,099 

$ 

491,628 

$ 

336,653 

OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX: 

OCI amortization on de-designated hedges(1) ........................................ 
Total other comprehensive loss, net of tax ...................................... 

COMPREHENSIVE INCOME ................................................................. 
Comprehensive loss attributable to noncontrolling interest ................... 

(1,476) 
(1,476) 

412,623 
90 

(5,528) 
(5,528) 

486,100 
59 

(14,645) 
(14,645) 

322,008 
- 

COMPREHENSIVE INCOME ATTRIBUTABLE TO WHITING ...... 

$ 

412,713 

$ 

486,159 

$ 

322,008 

(1)  Presented net of income tax expense of $862, $3,230 and $8,553 for the years ended December 31, 2012, 2011 and 2010, 

respectively.  

See notes to consolidated financial statements. 

79 

 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
WHITING PETROLEUM CORPORATION 
CONSOLIDATED STATEMENTS OF CASH FLOWS 
(In thousands) 

CASH FLOWS FROM OPERATING ACTIVITIES: 

Net income ................................................................................................$ 
Adjustments to reconcile net income to net cash provided by operating 

Year Ended December 31, 
2011 

2012 

2010 

414,099 

$ 

491,628 

$ 

336,653 

activities: 
Depreciation, depletion and amortization ...............................................................
Deferred income tax expense ................................................................ 
Amortization of debt issuance costs and debt discount ................................
Stock-based compensation .....................................................................................
Amortization of deferred gain on sale ................................................................
Gain on sale of properties .......................................................................................
Undeveloped leasehold and oil and gas property impairments...............................
Exploratory dry hole costs ......................................................................................
Loss on early extinguishment of debt ................................................................
Change in Production Participation Plan liability................................
Unrealized gain on derivative contracts ................................................................
Other, net ................................................................................................ 

684,724 
248,581 
9,518 
18,190 
(29,458) 
(3,423) 
107,855  
18,428 
- 
13,824 
(115,733) 
 (18,708) 

Changes in current assets and liabilities: 

Accounts receivable trade .......................................................................................
Prepaid expenses and other.....................................................................................
Accounts payable trade and accrued liabilities .......................................................
Revenues and royalties payable ................................................................ 
Taxes payable ................................................................................................

Net cash provided by operating activities ...........................................................

(55,750) 
2,535 
58,647 
45,798 
2,088 
1,401,215 

CASH FLOWS FROM INVESTING ACTIVITIES: 

Cash acquisition capital expenditures ................................................................
Drilling and development capital expenditures ..........................................................
Proceeds from sale of oil and gas properties ..............................................................
Net proceeds from sale of 18,400,000 units in Whiting USA Trust II .......................
Issuance of note receivable ........................................................................................

Net cash used in investing activities ................................................................

(121,430) 
(2,050,029) 
69,190 
322,257 
(306) 
 (1,780,318) 

CASH FLOWS FROM FINANCING ACTIVITIES: 

Issuance of 6.5% Senior Subordinated Notes due 2018 ................................
Redemption of 7.25% Senior Subordinated Notes due 2012 ................................
Redemption of 7.25% Senior Subordinated Notes due 2013 ................................
Premium on induced conversion of 6.25% convertible perpetual 

- 
- 
- 

preferred stock ................................................................................................

Contributions from noncontrolling interest ................................................................
Preferred stock dividends paid ................................................................
Long-term borrowings under credit agreement ..........................................................
Repayments of long-term borrowings under credit agreement ................................
Repayments to Alliant Energy Corporation ...............................................................
Debt issuance costs ................................................................................................
Restricted stock used for tax withholdings ................................................................

- 
- 
(1,077) 
2,340,000 
(1,920,000) 
(2,329) 
(2,807) 
(5,695) 
 408,092 

Net cash provided by (used in) financing activities ................................

468,203  
284,838  
8,682  
13,509  
(13,937) 
(16,313) 
38,783  
4,924  
- 
(865) 
(63,093) 
(13,512) 

(62,802) 
(3,771) 
33,135  
21,770  
904  
1,192,083  

(250,041) 
(1,554,271) 
69,276  
- 
(25,000) 
 (1,760,036) 

- 
- 
- 

- 
2,500  
(1,077) 
1,760,000  
(1,180,000) 
(1,871) 
(5,691) 
(9,049) 
 564,812  

393,897 
199,811 
10,592 
8,871 
(15,613) 
(1,388) 
26,525 
3,819 
6,235 
12,091 
(40,736) 
(4,013) 

(47,631) 
(3,387) 
66,663 
35,797 
9,103 
997,289 

(184,729) 
(739,047) 
9,202 
- 
- 
(914,574) 

350,000 
(150,000) 
(223,988) 

(47,529) 
- 
(16,441) 
1,150,000 
(1,110,000) 
(1,615) 
(20,471) 
(5,679) 
(75,723) 

See notes to consolidated financial statements. 

(Continued) 

80 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
WHITING PETROLEUM CORPORATION 
CONSOLIDATED STATEMENTS OF CASH FLOWS 
(In thousands) 

NET CHANGE IN CASH AND CASH EQUIVALENTS ................................$ 
CASH AND CASH EQUIVALENTS: 

Year Ended December 31, 
2011 

2012 

2010 

28,989 

$ 

(3,141) 

$ 

6,992 

Beginning of period ................................................................................................
End of period ................................................................................................$ 

15,811 
44,800 

SUPPLEMENTAL CASH FLOW DISCLOSURES: 

Income taxes paid (refunded), net ................................................................$ 
$ 
Interest paid, net of amounts capitalized ................................................................

(268) 
68,005 

NONCASH INVESTING ACTIVITIES: 

Accrued capital expenditures .....................................................................................

$ 

110,663 

18,952  
15,811 

4,065 
53,761 

$ 

$ 
$ 

11,960 
18,952 

6,181 
46,332 

$ 

$ 
$ 

$ 

142,827 

$ 

84,789 

NONCASH FINANCING ACTIVITIES: 

Contributions from noncontrolling interest ................................................................
Issuance of common stock related to the induced conversion of 

preferred stock ................................................................................................

$ 

$ 

Preferred stock cancelled in connection with its induced conversion ........................

$ 

- 

- 

- 

$ 

$ 

$ 

5,833 

- 

- 

$ 

$ 

$ 

- 

317,406 

(317,406) 

See notes to consolidated financial statements. 

(Concluded) 

81 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
-

-

)
5
4
6
,
4
1
(

3
5
6
,
6
3
3

)
9
2
5
,
7
4
(

)
9
7
6
,
5
(

1
7
8
,
8

)
1
4
4
,
6
1
(

)
8
2
5
,
5
(

8
2
6
,
1
9
4

5
1
3
,
1
3
5
,
2

-

-

-

-

3
3
3
,
8

)
9
4
0
,
9
(

)
7
7
0
,
1
(

9
0
5
,
3
1

-

-

)
5
9
6
,
5
(

0
9
1
,
8
1

)
7
7
0
,
1
(

)
6
7
4
,
1
(

9
9
0
,
4
1
4

1
3
1
,
9
2
0
,
3

y
t
i
u
q
E

l
a
t
o
T

5
8
0
,
0
7
2
,
2

$

-

-

-

-

-

-

-

-

-

-

-

-

-

)
9
5
(

3
3
3
,
8

-

-

-

-

-

)
0
9
(

4
7
2
,
8

-

-

-

-

-

-

g
n

i
l
l
o
r
t
n
o
c
n
o
N

t
s
e
r
e
t
n
I

g
n

i
t
i
h
W

l
a
t
o
T

’
s
r
e
d
l
o
h
e
r
a
h
S

y
t
i
u
q
E

)
5
4
6
,
4
1
(

3
5
6
,
6
3
3

$

5
8
0
,
0
7
2
,
2

$

-

3
8
9
,
2
0
7

3
5
6
,
6
3
3

d
e
n
i
a
t
e
R

i

s
g
n
n
r
a
E

$

3
1
4
,
0
2

$

5
3
6
,
6
4
5
,
1

$

1
5

$

8
2
7
,
2
0
1

N
O
I
T
A
R
O
P
R
O
C
M
U
E
L
O
R
T
E
P
G
N
I
T
I
H
W

Y
T
I
U
Q
E
F
O
S
T
N
E
M
E
T
A
T
S
D
E
T
A
D
I
L
O
S
N
O
C

)
s
d
n
a
s
u
o
h
t
n
I
(

d
e
t
a
l
u
m
u
c
c
A

r
e
h
t
O

e
v
i
s
n
e
h
e
r
p
m
o
C

l
a
n
o
i
t
i
d
d
A

)
1
(

k
c
o
t
S
n
o
m
m
o
C

k
c
o
t
S
d
e
r
r
e
f
e
r
P

)
s
s
o
L

(

e
m
o
c
n
I

l
a
t
i
p
a
C
n
i
-
d
i
a
P

t
n
u
o
m
A

s
e
r
a
h
S

t
n
u
o
m
A

s
e
r
a
h
S

)
9
2
5
,
7
4
(

)
9
2
5
,
7
4
(

-

-

-

-

-

-

-

)
9
7
6
,
5
(

1
7
8
,
8

)
1
4
4
,
6
1
(

)
8
2
5
,
5
(

7
8
6
,
1
9
4

5
1
3
,
1
3
5
,
2

)
9
4
0
,
9
(

)
7
7
0
,
1
(

9
0
5
,
3
1

)
6
7
4
,
1
(

9
8
1
,
4
1
4

7
5
8
,
0
2
0
,
3

-

-

)
5
9
6
,
5
(

0
9
1
,
8
1

)
7
7
0
,
1
(

-

-

-

-

)
1
4
4
,
6
1
(

6
6
6
,
5
7
9

7
8
6
,
1
9
4

-

-

-

-

-

-

-

-

-

-

-

-

-

)
7
7
0
,
1
(

)
7
7
0
,
1
(

9
8
1
,
4
1
4

6
7
2
,
6
6
4
,
1

-

)
5
4
6
,
4
1
(

-

-

-

-

-

-

8
6
7
,
5

)
8
2
5
,
5
(

-

-

-

-

-

-

-

-

-

-

-

-

-

-

0
4
2

)
6
7
4
,
1
(

-

-

-

-

)
5
(

-

1
7
8
,
8

)
9
7
6
,
5
(

2
2
8
,
9
4
5
,
1

-

-

-

-

-

-

)
9
5
(

-

)
9
4
0
,
9
(

9
0
5
,
3
1

-

-

8

-

-

-

-

-

-

-

-

9
5

9
5

-

-

-

-

-

-

-

-

-

-

)
7
2
(

5
2
3

)
6
5
1
(

8
6
9
,
7
1
1

-

-

1

-

-

-

-

)
0
2
(

4
0
3

)
8
4
1
(

-

-

-

)
1
(

-

)
5
9
6
,
5
(

0
9
1
,
8
1

-

-

1

-

-

-

-

-

-

-

-

)
9
(

2
9
5

)
6
0
1
(

3
2
2
,
4
5
5
,
1

8
1
1

5
0
1
,
8
1
1

8
9
0
,
5
1

)
3
(

)
7
7
2
,
3
(

. 
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
 .
k
c
o
t
s
d
e
r
r
e
f
e
r
p
l
a
u
t
e
p
r
e
p

3

-

-

$

0
5
4
,
3

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.

0
1
0
2

,
1
y
r
a
u
n
a
J
-
S
E
C
N
A
L
A
B

-

-

. 
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
e
m
o
c
n
i

t
e
N

. 
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
e
m
o
c
n
i
e
v
i
s
n
e
h
e
r
p
m
o
c
r
e
h
t
O

e
l
b
i
t
r
e
v
n
o
c
f
o
n
o
i
s
r
e
v
n
o
c
d
e
c
u
d
n
I

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

)
1
(

3
7
1

-

-

-

-

-

-

-

. 
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
 .
d
e
u
s
s
i
k
c
o
t
s
d
e
t
c
i
r
t
s
e
R

. 
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
 .
d
e
t
i
e
f
r
o
f
k
c
o
t
s
d
e
t
c
i
r
t
s
e
R

. 
.
.
.
.
.
 .
s
g
n
i
d
l
o
h
h
t
i

w
x
a
t

r
o
f
d
e
s
u
k
c
o
t
s
d
e
t
c
i
r
t
s
e
R

. 
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
 .
n
o
i
t
a
s
n
e
p
m
o
c
d
e
s
a
b
-
k
c
o
t
S

. 
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
 .
d
i
a
p
s
d
n
e
d
i
v
i
d
d
e
r
r
e
f
e
r
P

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.

0
1
0
2

,

1
3

r
e
b
m
e
c
e
D
-
S
E
C
N
A
L
A
B

. 
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
e
m
o
c
n
i

t
e
N

. 
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
e
m
o
c
n
i
e
v
i
s
n
e
h
e
r
p
m
o
c
r
e
h
t
O

. 
.
.
.
.
.
 .
n
o
m
m
o
c
o
t
k
c
o
t
s
d
e
r
r
e
f
e
r
p
f
o
n
o
i
s
r
e
v
n
o
C

. 
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.

t
i
l
p
s
k
c
o
t
s
e
n
o
-
r
o
f
-
o
w
T

. 
.
.
.
.
 .
t
s
e
r
e
t
n
i
g
n
i
l
l
o
r
t
n
o
c
n
o
n
m
o
r
f

s
n
o
i
t
u
b
i
r
t
n
o
C

. 
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
 .
d
e
u
s
s
i
k
c
o
t
s
d
e
t
c
i
r
t
s
e
R

. 
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
 .
d
e
t
i
e
f
r
o
f
k
c
o
t
s
d
e
t
c
i
r
t
s
e
R

. 
.
.
.
.
.
 .
s
g
n
i
d
l
o
h
h
t
i

w
x
a
t

r
o
f
d
e
s
u
k
c
o
t
s
d
e
t
c
i
r
t
s
e
R

. 
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
 .
n
o
i
t
a
s
n
e
p
m
o
c
d
e
s
a
b
-
k
c
o
t
S

. 
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
 .
d
i
a
p
s
d
n
e
d
i
v
i
d
d
e
r
r
e
f
e
r
P

-

-

-

-

-

-

-

. 
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
e
m
o
c
n
i

t
e
N

. 
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
e
m
o
c
n
i
e
v
i
s
n
e
h
e
r
p
m
o
c
r
e
h
t
O

. 
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
 .
d
e
u
s
s
i
k
c
o
t
s
d
e
t
c
i
r
t
s
e
R

. 
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
 .
d
e
t
i
e
f
r
o
f
k
c
o
t
s
d
e
t
c
i
r
t
s
e
R

. 
.
.
.
.
.
 .
s
g
n
i
d
l
o
h
h
t
i

w
x
a
t

r
o
f
d
e
s
u
k
c
o
t
s
d
e
t
c
i
r
t
s
e
R

. 
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
 .
n
o
i
t
a
s
n
e
p
m
o
c
d
e
s
a
b
-
k
c
o
t
S

. 
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
 .
d
i
a
p
s
d
n
e
d
i
v
i
d
d
e
r
r
e
f
e
r
P

2
7
1

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.

1
1
0
2

,

1
3

r
e
b
m
e
c
e
D
-
S
E
C
N
A
L
A
B

$

2
7
1

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.

2
1
0
2

,

1
3

r
e
b
m
e
c
e
D
-
S
E
C
N
A
L
A
B

2
7
1
,
3
5
4
,
3

$

4
8
1
,
8

$

8
8
9
,
4
4
4
,
3

$

8
8
3
,
9
7
8
,
1

$

)
6
3
2
,
1
(

$

7
1
7
,
6
6
5
,
1

$

9
1
1

$

2
8
5
,
8
1
1

o
t
8
e
t
o
N
n
i
d
e
b
i
r
c
s
e
d
s
a

,
1
1
0
2
y
r
a
u
r
b
e
F
n
i

t
i
l
p
s
k
c
o
t
s

e
n
o
-
r
o
f
-
o
w

t

s
’
y
n
a
p
m
o
C
e
h
t

t
c
e
l
f
e
r

o
t
d
o
i
r
e
p
0
1
0
2
e
h
t

r
o
f

d
e
t
a
t
s
e
r
y
l
e
v
i
t
c
a
o
r
t
e
r

n
e
e
b
e
v
a
h

)
s
e
u
l
a
v

r
a
p

t
p
e
c
x
e
(

s
t
n
u
o
m
a

e
r
a
h
s

n
o
m
m
o
c

l
l

A

)
1
(

2
8

.
s
t
n
e
m
e
t
a
t
s

l
a
i
c
n
a
n
i
f

d
e
t
a
d
i
l
o
s
n
o
c

e
s
e
h
t

.
s
t
n
e
m
e
t
a
t
s

l
a
i
c
n
a
n
i
f

d
e
t
a
d
i
l
o
s
n
o
c

o
t

s
e
t
o
n
e
e
S

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
WHITING PETROLEUM CORPORATION 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS 

1. 

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES 

Description of Operations—Whiting Petroleum Corporation, a Delaware corporation, is an independent oil 
and  gas  company  that  explores  for,  develops,  acquires  and  produces  crude  oil,  NGLs  and  natural  gas 
primarily in the Rocky Mountains, Permian Basin, Mid-Continent, Michigan and Gulf Coast regions of the 
United States.  Unless otherwise specified or the context otherwise requires, all references in these notes to 
“Whiting” or the “Company” are to Whiting Petroleum Corporation and its consolidated subsidiaries. 

Basis  of  Presentation  of  Consolidated  Financial  Statements—The  consolidated  financial  statements 
include  the  accounts  of  Whiting  Petroleum  Corporation,  its  consolidated  subsidiaries  and  Whiting’s  pro 
rata  share  of  the  accounts  of  Whiting  USA  Trust  I  (“Trust  I”)  pursuant  to  Whiting’s  15.8%  ownership 
interest in Trust I.  Investments in entities which give Whiting significant influence, but not control, over 
the investee are accounted for using the equity method.  Under the equity method, investments are stated at 
cost  plus  the  Company’s  equity  in  undistributed  earnings  and  losses.    All  intercompany  balances  and 
transactions have been eliminated upon consolidation. 

Use  of  Estimates—The  preparation  of  financial  statements  in  conformity  with  generally  accepted 
accounting  principles  requires  management  to  make  estimates  and  assumptions  that  affect  the  reported 
amounts  of  assets  and  liabilities,  the  disclosure  of  contingent  assets  and  liabilities  at  the  date  of  the 
financial statements, and the reported amounts of revenues and expenses during the reporting period.  Items 
subject to such estimates and assumptions include (1) oil and natural gas reserves; (2) cash flow estimates 
used  in  impairment  tests  of  long-lived  assets;  (3)  depreciation,  depletion  and  amortization;  (4)  asset 
retirement obligations; (5) assigning fair value and allocating purchase price in connection with business 
combinations;  (6)  income  taxes;  (7)  Production  Participation  Plan  and  other  accrued  liabilities;  (8) 
valuation  of  derivative  instruments;  and  (9)  accrued  revenue  and  related  receivables.    Although 
management believes these estimates are reasonable, actual results could differ from these estimates. 

Cash and Cash Equivalents—Cash equivalents consist of demand deposits and highly liquid investments 
which have an original maturity of three months or less. 

Accounts  Receivable  Trade—Whiting’s  accounts  receivable trade  consist  mainly  of  receivables  from  oil 
and  gas  purchasers  and  joint  interest  owners  on  properties  the  Company  operates.    For  receivables  from 
joint interest owners, Whiting typically has the ability to withhold future revenue disbursements to recover 
any non-payment of joint interest billings.  Generally, the Company’s oil and gas receivables are collected 
within two months, and to date, the Company has had minimal bad debts. 

The Company routinely assesses the recoverability of all material trade and other receivables to determine 
their collectability.  At December 31, 2012 and 2011, the Company had an allowance for doubtful accounts 
of $3.9 million and $1.7 million, respectively. 

Inventories—Materials  and  supplies  inventories  consist  primarily  of  tubular  goods  and  production 
equipment,  carried  at  weighted-average  cost.    Materials  and  supplies  are  included  in  other  property  and 
equipment.  Crude oil in tanks inventory is carried at the lower of the estimated cost to produce or market 
value and is included in prepaid expenses and other. 

Oil and Gas Properties 

Proved.  The Company follows the successful efforts method of accounting for its oil and gas properties.  
Under this method of accounting, all property acquisition costs and development costs are capitalized when 
incurred and depleted on a units-of-production basis over the remaining life of proved reserves and proved 

83 

 
 
 
 
developed  reserves,  respectively.    Costs  of  drilling  exploratory  wells  are  initially  capitalized  but  are 
charged to expense if the well is determined to be unsuccessful. 

The Company assesses its proved oil and gas properties for impairment whenever events or circumstances 
indicate  that  the  carrying  value  of  the  assets  may  not  be  recoverable.    The  impairment  test  compares 
undiscounted future net cash flows to the assets’ net book value.  If the net capitalized costs exceed future 
net  cash  flows,  then  the  cost  of  the  property  is  written  down  to  fair  value.    Fair  value  for  oil  and  gas 
properties  is  generally  determined  based  on  discounted  future  net  cash  flows.    Impairment  expense  for 
proved properties is reported in exploration and impairment expense. 

Net  carrying  values  of  retired,  sold  or  abandoned  properties  that  constitute  less  than  a  complete  unit  of 
depreciable property are charged or credited, net of proceeds, to accumulated depreciation, depletion and 
amortization unless doing so significantly affects the unit-of-production amortization rate, in which case a 
gain or loss is recognized in income.  Gains or losses from the disposal of complete units of depreciable 
property are recognized to earnings. 

Interest  cost  is  capitalized  as  a  component  of  property  cost  for  development  projects  that require  greater 
than  six  months  to  be  readied  for  their  intended  use.    During  2012,  2011  and  2010,  the  Company 
capitalized interest of $2.7 million, $3.6 million and $2.9 million, respectively. 

Unproved.  Unproved properties consist of costs to acquire undeveloped leases as well as costs to acquire 
unproved  reserves.    Undeveloped  lease  costs  and  unproved  reserve  acquisitions  are  capitalized,  and 
individually insignificant unproved properties are amortized on a composite basis, based on past success, 
past experience and average lease-term lives.  The Company evaluates significant unproved properties for 
impairment based on remaining lease term, drilling results, reservoir performance, seismic interpretation or 
future plans to develop acreage.  When successful wells are drilled on undeveloped leaseholds, unproved 
property costs are reclassified to proved properties and depleted on a unit-of-production basis.  Impairment 
expense for unproved properties is reported in exploration and impairment expense. 

Exploratory.    Geological  and  geophysical  costs,  including  exploratory  seismic  studies,  and  the  costs  of 
carrying and retaining unproved acreage are expensed as incurred.  Costs of seismic studies that are utilized 
in development drilling within an area of proved reserves are capitalized as development costs.  Amounts 
of seismic costs capitalized are based on only those blocks of data used in determining development well 
locations.  To the extent that a seismic project covers areas of both developmental and exploratory drilling, 
those seismic costs are proportionately allocated between development costs and exploration expense. 

Costs of drilling exploratory wells are initially capitalized, pending determination of whether the well has 
found proved reserves.  If an exploratory well has not found proved reserves, the costs of drilling the well 
and other associated costs are charged to expense.  Cost incurred for exploratory wells that find reserves, 
which cannot yet be classified as proved, continue to be capitalized if (a) the well has found a sufficient 
quantity of reserves to justify completion as a producing well, and (b) the Company is making sufficient 
progress assessing the reserves and the economic and operating viability of the project.  If either condition 
is  not  met,  or  if  the  Company  obtains  information  that  raises  substantial  doubt  about  the  economic  or 
operational viability of the project, the exploratory well costs, net of any salvage value, are expensed. 

Enhanced recovery activities.  The Company carries out tertiary recovery methods on certain of its oil and 
gas  properties  in  order  to  recover  additional  hydrocarbons  that  are  not  recoverable  from  primary  or 
secondary recovery methods.  Acquisition costs of tertiary injectants, such as purchased CO2, for enhanced 
oil recovery (“EOR”) activities that are used during a project’s pilot phase, or prior to a project’s technical 
and economic viability (i.e. prior to the recognition of proved tertiary recovery reserves) are expensed as 
incurred.    After  a  project  has  been  determined  to  be  technically  feasible  and  economically  viable,  all 
acquisition  costs  of  tertiary  injectants  are  capitalized  as  development  costs  and  depleted,  as  they  are 
incurred  solely  for  obtaining  access  to  reserves  not  otherwise  recoverable  and  have  future  economic 

84 

 
 
benefits  over  the  life  of  the  project.    As  CO2  is  recovered  together  with  oil  and  gas  production,  it  is 
extracted and re-injected,  and  all the  associated  CO2 recycling  costs  are expensed  as incurred.   Likewise 
costs incurred to maintain reservoir pressure are also expensed. 

Other Property and Equipment.  Other property and equipment consists mainly of materials and supplies 
inventories which are not depreciated.  Also included in other property and equipment are an oil pipeline, 
furniture and fixtures, leasehold improvements and automobiles, which are stated at cost and depreciated 
using the straight-line method over their estimated useful lives ranging from 4 to 33 years. 

Debt  Issuance  Costs—Debt  issuance  costs  related  to  the  Company’s  Senior  Subordinated  Notes  are 
amortized to interest expense using the effective interest method over the term of the related debt.  Debt 
issuance costs related to the credit facility are amortized to interest expense on a straight-line basis over the 
borrowing term. 

Asset  Retirement  Obligations  and  Environmental  Costs—Asset  retirement  obligations  relate  to  future 
costs  associated  with  the  plugging  and  abandonment  of  oil  and  gas  wells,  removal  of  equipment  and 
facilities from leased acreage and returning such land to its original condition.  The fair value of a liability 
for an asset retirement obligation is recorded in the period in which it is incurred (typically when a well is 
completed  or  an  asset  is  installed  at  the  production  location),  and  the  cost  of  such  liability  increases  the 
carrying amount of the related long-lived asset by the same amount.  The liability is accreted each period 
through charges to depreciation, depletion and amortization expense, and the capitalized cost is depleted on 
a units-of-production basis over the proved developed reserves of the related asset.  Revisions to estimated 
retirement obligations result in adjustments to the related capitalized asset and corresponding liability. 

Liabilities  for  environmental  costs  are  recorded  on  an  undiscounted  basis  when  it  is  probable  that 
obligations  have  been  incurred  and  the  amounts  can  be  reasonably  estimated.    These  liabilities  are  not 
reduced by possible recoveries from third parties. 

Derivative  Instruments—The  Company  enters  into  derivative  contracts,  primarily  costless  collars,  to 
manage  its  exposure to commodity  price risk.    All  derivative  instruments,  other  than those that  meet  the 
“normal purchase normal sales” exclusion, are recorded on the balance sheet as either an asset or liability 
measured  at  fair  value.    Gains  and  losses  from  changes  in  the  fair  value  of  derivative  instruments  are 
recognized immediately in earnings, unless the derivative meets specific hedge accounting criteria, and the 
derivative  has  been  designated  as  a  hedge.    Effective  April  1,  2009,  however,  the  Company  elected  to 
discontinue all hedge accounting prospectively.  Cash flows from derivatives used to manage commodity 
price  risk  are  classified  in  operating  activities  along  with  the  cash  flows  of  the  underlying  hedged 
transactions.  The Company does not enter into derivative instruments for speculative or trading purposes. 

For derivatives qualifying as hedges of future cash flows prior to April 1, 2009, the effective portion of any 
changes in fair value was recognized in accumulated other comprehensive income (loss) and is reclassified 
to net income when the underlying forecasted transaction occurs.  Any ineffective portion of such hedges 
was recognized in commodity derivative (gain) loss, net as it occurred.  For discontinued cash flow hedges, 
prospective changes in the fair value of the derivative are recognized in earnings.  The accumulated gain or 
loss  recognized  in  accumulated  other  comprehensive  income  (loss)  at  the  time  a  hedge  is  discontinued 
continues to be deferred until the original forecasted transaction occurs.  However, if it is determined that 
the likelihood of the original forecasted transaction occurring is no longer probable, the entire accumulated 
gain or loss recognized in accumulated other comprehensive income (loss) is immediately reclassified into 
earnings. 

Deferred  Gain  on  Sale—The  deferred  gain  on  sale  relates  to  the  sale  of  11,677,500  Trust  I  units  and 
18,400,000  Whiting  USA  Trust  II  (“Trust  II”)  units,  and  is  amortized  to  income  based  on  the  units-of-
production method. 

85 

 
 
Revenue  Recognition—Oil  and  gas revenues  are  recognized  when  production is  sold to  a purchaser  at  a 
fixed or determinable price, when delivery has occurred and title has transferred, and if the collectability of 
the  revenue  is  probable.    Revenues  from  the  production  of  gas  properties  in  which  the  Company  has  an 
interest  with  other  producers  are  recognized  on  the  basis  of  the  Company’s  net  working  interest 
(entitlement  method).    Net  deliveries  in  excess  of  entitled  amounts  are  recorded  as  liabilities,  while  net 
under  deliveries  are  reflected  as  receivables.    Gas  imbalance  receivables  or  payables  are  valued  at  the 
lowest of (i) the current market price; (ii) the price in effect at the time of production; or (iii) the contract 
price, if a contract is in hand.  As of December 31, 2012 and 2011, the Company was in a net under (over) 
produced imbalance position of (53,536) Mcf and (13,716) Mcf, respectively. 

Taxes collected and remitted to governmental agencies on behalf of customers are not included in revenues 
or costs and expenses. 

General  and  Administrative  Expenses—General  and  administrative  expenses  are  reported  net  of 
reimbursements of overhead costs that are allocated to working interest owners in the oil and gas properties 
operated by Whiting. 

Maintenance and Repairs—Maintenance and repair costs which do not extend the useful lives of property 
and  equipment  are  charged  to  expense  as  incurred.    Major  replacements,  renewals  and  betterments  are 
capitalized. 

Income Taxes—Income taxes are recognized based on earnings reported for tax return purposes in addition 
to  a  provision  for  deferred  income  taxes.    Deferred  income  taxes  are  accounted  for  using  the  liability 
method.    Under  this  method,  deferred  tax  assets  and  liabilities  are  determined  by  applying  the  enacted 
statutory tax rates in effect at the end of a reporting period to the cumulative temporary differences between 
the  tax  bases  of  assets  and  liabilities  and  their  reported  amounts  in  the  Company’s  financial  statements.  
The effect on deferred taxes for a change in tax rates is recognized in income in the period that includes the 
enactment date.  A valuation allowance for deferred tax assets is established when it is more likely than not 
that some portion of the benefit from deferred tax assets will not be realized.  The Company’s uncertain tax 
positions  must  meet  a  more-likely-than-not  realization  threshold  to  be  recognized,  and  any  potential 
accrued  interest  and  penalties  related  to  unrecognized  tax  benefits  are  recognized  within  income  tax 
expense.  

Earnings Per Share—Basic earnings per common share is calculated by dividing net income available to 
common shareholders by the weighted average number of common shares outstanding during each period.  
Diluted  earnings  per  common  share  is  calculated  by  dividing  adjusted  net  income  available  to  common 
shareholders by the weighted average number of diluted common shares outstanding, which includes the 
effect  of  potentially  dilutive  securities.    Potentially  dilutive  securities  for  the  diluted  earnings  per  share 
calculations  consist  of  unvested  restricted  stock  awards  and  outstanding  stock  options  using  the  treasury 
method, as well as convertible perpetual preferred stock using the if-converted method.  In the computation 
of  diluted  earnings  per  share,  excess  tax  benefits  that  would  be  created  upon  the  assumed  vesting  of 
unvested restricted shares or the assumed exercise of stock options (i.e. hypothetical excess tax benefits) 
are included in the assumed proceeds component of the treasury share method to the extent that such excess 
tax  benefits  are  more  likely  than  not  to  be  realized.    When  a  loss  from  continuing  operations  exists,  all 
potentially dilutive securities are anti-dilutive and are therefore excluded from the computation of diluted 
earnings per share. 

Industry  Segment  and  Geographic  Information—The  Company  has  evaluated  how  it  is  organized  and 
managed and has identified only one operating segment, which is the exploration and production of crude 
oil, NGLs and natural gas.  The Company considers its gathering, processing and marketing functions as 
ancillary to its oil and gas producing activities.  All of the Company’s operations and assets are located in 
the United States, and substantially all of its revenues are attributable to United States customers. 

86 

 
 
Fair Value of Financial Instruments—The Company has included fair value information in these notes 
when  the fair  value  of  our  financial instruments is  materially  different  from  their  book  value.    Cash  and 
cash equivalents, accounts receivable and payable are carried at cost, which approximates their fair value 
because of the short-term maturity of these instruments.  The Company’s credit agreement has a recorded 
value  that  approximates  its  fair  value  since  its  variable  interest  rate  is  tied  to  current  market  rates.    The 
Company’s  derivative  financial  instruments  are  recorded  at  fair  value  and  include  a  measure  of  the 
Company’s own nonperformance risk or that of its counterparties as appropriate. 

Concentration  of  Credit  Risk—Whiting  is  exposed  to  credit  risk  in  the  event  of  nonpayment  by 
counterparties,  a  significant  portion  of  which  are  concentrated  in  energy  related  industries.    The 
creditworthiness of customers and other counterparties is subject to continuing review.  The following table 
presents the percentages by purchaser that accounted for 10% or more of the Company’s total oil, NGL and 
natural gas sales for the years ended December 31, 2012, 2011 and 2010: 

2012 
Plains Marketing LP (1) ................................................................
20% 
Shell Trading US................................................................14% 
Nexen Pipeline USA, Inc. (1) ................................
Eighty Eight Oil Company ................................
Bridger Trading LLC ................................................................
EOG Resources, Inc. ................................................................

- 
11% 
11% 
4% 

2011 
27% 
13% 
- 
8% 
6% 
7% 

2010 
16% 
17% 
13% 
4% 
5% 
10% 

(1)  Effective December 30, 2010, Plains Marketing LP acquired Nexen Pipeline USA, Inc. 

Commodity  derivative  contracts  held  by  the  Company  are  with  ten  counterparties,  all  of  which  are 
participants  in  Whiting’s  credit  facility  as  well,  and  all  of  which  have  investment-grade  ratings  from 
Moody’s  and  Standard  &  Poor.   As  of  December  31,  2012,  outstanding  derivative  contracts  with  JP 
Morgan Chase Bank, N.A., The Bank of Nova Scotia and Bank of America Merrill Lynch represent 49%, 
17% and 17%, respectively, of total crude oil volumes hedged. 

Adopted  and  Recently  Issued  Accounting  Pronouncements—In  December  2010,  the  FASB  issued 
Accounting  Standards  Update  No.  2010-29,  Business  Combinations:  Disclosure  of  Supplementary  Pro 
Forma  Information  for  Business  Combinations  (“ASU  2010-29”),  which  provides  amendments  to  FASB 
ASC Topic 805, Business Combinations.  The objective of ASU 2010-29 is to clarify and expand the pro 
forma  revenue  and  earnings  disclosure  requirements  for  business  combinations.    ASU  2010-29  was 
effective  for  fiscal  years  beginning  after  December  15,  2010.    The  Company  adopted  ASU  2010-29 
effective  January  1,  2011,  which  did  not  have  an  impact  on  the  Company’s  consolidated  financial 
statements.  

In  May  2011,  the  FASB  issued  Accounting  Standards  Update  No.  2011-04,  Fair  Value  Measurement: 
Amendments  to  Achieve  Common  Fair  Value  Measurement  and  Disclosure  Requirements  in  U.S.  GAAP 
and  IFRSs  (“ASU  2011-04”),  which  provides  amendments  to  FASB  ASC  Topic  820,  Fair  Value 
Measurement.  The objective of ASU 2011-04 is to create common fair value measurement and disclosure 
requirements between GAAP and International Financial Reporting Standards (“IFRS”).  The amendments 
clarify  existing  fair  value  measurement  and  disclosure  requirements  and  make  changes  to  particular 
principles or requirements for measuring or disclosing information about fair value measurements.  ASU 
2011-04 was effective for interim and annual reporting periods beginning after December 15, 2011.  The 
Company adopted this standard effective January 1, 2012, which did not have an impact on the Company’s 
consolidated financial statements other than additional disclosures. 

In  June  2011,  the  FASB  issued  Accounting  Standards  Update  No.  2011-05,  Comprehensive  Income: 
Presentation  of  Comprehensive  Income  (“ASU  2011-05”),  which  provides  amendments  to  FASB  ASC 
Topic 220, Comprehensive Income.  The objective of ASU 2011-05 is to require an entity to present the 
total of comprehensive income, the components of net income and the components of other comprehensive 

87 

 
 
 
 
 
 
 
income either in a single continuous statement of comprehensive income or in two separate but consecutive 
statements.  ASU 2011-05 eliminates the option to present the components of other comprehensive income 
as part of the statement of equity.  ASU 2011-05 is effective for interim and annual periods beginning after 
December 15, 2011 and is to be applied retrospectively.  In December 2011, the FASB issued Accounting 
Standards Update No. 2011-12, Comprehensive Income: Deferral of the Effective Date for Amendments to 
the  Presentation  of  Reclassifications  of  Items  Out  of  Accumulated  Other  Comprehensive  Income  in 
Accounting Standards Update No. 2011-05 (“ASU 2011-12”), which deferred the effective date of changes 
in  ASU  2011-05  that  relate  to  the  presentation  of  reclassification  adjustments  out  of  accumulated  other 
comprehensive income.  The amendments in this update are effective at the same time as the amendments 
in ASU 2011-05.  The Company adopted the provisions of ASU 2011-05 and 2011-12 effective January 1, 
2012,  which  did  not  have  an  impact  on  its  consolidated  financial  statements  other  than  requiring  the 
Company  to  present  its  statements  of  comprehensive  income  separately  from  its  statements  of  equity,  as 
these statements were formerly presented on a combined basis. 

In  December  2011,  the  FASB  issued  Accounting  Standards  Update  No.  2011-11,  Balance  Sheet: 
Disclosures about Offsetting Assets and Liabilities (“ASU 2011-11”).  The objective of ASU 2011-11 is to 
require  an  entity  to  provide  enhanced  disclosures  that  will  enable  users  of  its  financial  statements  to 
evaluate the effect or potential effect of netting arrangements on an entity’s financial position.  In January 
2013,  the  FASB  issued  Accounting  Standards  Update  No.  2013-01,  Clarifying  the  Scope  of  Disclosures 
about Offsetting Assets and Liabilities  (“ASU 2013-01”), which clarifies that the scope of ASU 2011-11 
applies  to  derivatives  accounted  for in  accordance  with  FASB  ASC Topic  815, Derivative and  Hedging, 
including  bifurcated  embedded  derivatives,  repurchase  agreements  and  reverse purchase  agreements,  and 
securities lending transactions that are either offset in accordance with FASB ASC Section 210-20-45 or 
Section  815-10-45  or  subject  to  an  enforceable  master  netting  arrangement  or  similar  agreement.    ASU 
2011-11  and  ASU  2013-01  are  effective  for  interim  and  annual  reporting  periods  beginning  on  or  after 
January  1,  2013  and  should  be  applied  retrospectively.    The  adoption  of  this  standard  will  not  have  a 
significant impact on the Company’s consolidated financial statements. 

In  July  2012,  the  FASB  issued  Accounting  Standards  Update  No.  2012-02,  Intangibles  –  Goodwill  and 
Other  –  Testing  Indefinite-Lived  Intangible  Assets  for  Impairment  (“ASU  2012-02”).    The  objective  of 
ASU  2012-02  is  to reduce  the cost  and  complexity  of  performing  an  impairment  test  for  indefinite-lived 
intangible assets by permitting an entity first to assess qualitative factors to determine whether it is more 
likely than not that an indefinite-lived intangible asset is impaired, as a basis for determining whether it is 
necessary  to  perform  a  quantitative  impairment  test.    ASU  2012-02  is  effective  for  interim  and  annual 
reporting  periods  beginning  after  September  15,  2012.    The  adoption  of  this  standard  will  not  have  a 
significant impact on the Company’s consolidated financial statements. 

In August 2012, The SEC issued the Disclosure of Payments by Resource Extraction Issuers: Final Rule.  
The rule requires resource extraction issuers to include in a separate annual report information relating to 
any  payment  made  by  the  issuer,  its  subsidiaries  or  an  entity  under  the  issuer’s  control,  to  a  foreign 
government or the Federal government for the purpose of the commercial development of oil, natural gas or 
minerals.    Issuers  must  provide  information  about the  type  and  total  amount  of  such  payments  made  for 
each project related to the commercial development of oil, natural gas or minerals, and the type and total 
amount  of  payments  made  to  each  government.    The  rule  is  effective  for  fiscal  years  ending  after 
September 30, 2013.  The Company will be required to annually file the required disclosures as exhibits to 
a newly created form, Form SD, and the first report will be filed for the period beginning October 1, 2013 
through  December  31,  2013.    The  adoption  of  this  standard  therefore  will  not  have  an  impact  on  the 
Company’s consolidated financial statements due to its stand-alone reporting requirements. 

In  February  2013,  the  FASB  issued  Accounting  Standards  Update  No.  2013-02,  Reporting  of  Amounts 
Reclassified Out of Accumulated Other Comprehensive Income (“ASU 2013-02”).  The objective of ASU 
2013-02  is  to  improve  the  reporting  of  reclassifications  out  of  accumulated  other  comprehensive  income 
(“AOCI”)  by  requiring  an  entity  to  report  the  effect  of  significant  reclassifications  out  of  AOCI  on  the 

88 

 
 
respective  line  items  in  net  income  if  the  amount  being  reclassified  is  required  under  GAAP  to  be 
reclassified  in  its  entirety  to  net  income.    For  other  amounts  that  are  not  required  under  GAAP  to  be 
reclassified  in  their  entirety  to  net  income  in  the  same  reporting  period,  an  entity  is  required  to  cross-
reference other disclosures required under GAAP that provide additional detail about those amounts.  ASU 
2013-02  is  effective  for  interim  and  annual  reporting  periods  beginning  after  December  15,  2012.    The 
adoption  of  this  standard  will  not  have  a  significant  impact  on  the  Company’s  consolidated  financial 
statements other than additional disclosures. 

2. 

ACQUISITIONS AND DIVESTITURES 

2012 Acquisitions  

On  March  22,  2012,  the  Company  completed  the  acquisition  of  approximately  13,300  net  undeveloped 
acres in the Missouri Breaks prospect in Richland County, Montana for $33.3 million. 

2012 Divestitures 

On May 18, 2012, the Company sold a 50% ownership interest in its Belfield gas processing plant, natural 
gas gathering system, oil gathering system and related facilities located in Stark County, North Dakota for 
total cash proceeds of $66.2 million.  Whiting used the net proceeds from the sale to repay a portion of the 
debt outstanding under its credit agreement. 

On  March  28,  2012,  the  Company  completed  an  initial  public  offering  of  units  of  beneficial  interest  in 
Trust  II,  selling  18,400,000  Trust  II  units  at  $20.00  per  unit,  which  generated  net  proceeds  of  $322.3 
million after underwriters’ fees, offering expenses and post-close adjustments.  The Company used the net 
offering proceeds to repay a portion of the debt outstanding under its credit agreement.  The net proceeds 
from  the  sale  of  Trust  II  units  to  the  public  resulted  in  a  deferred  gain  on  sale  of  $128.2  million.  
Immediately prior to the closing of the offering, Whiting conveyed a term net profits interest in certain of 
its oil and gas properties to Trust II in exchange for 100% of the trust’s units issued, or 18,400,000 units. 

The net profits interest entitles Trust II to receive 90% of the net proceeds from the sale of oil and natural 
gas production from the underlying properties.  The net profits interest will terminate on the later to occur 
of (1) December 31, 2021, or (2) the time when 11.79 MMBOE have been produced from the underlying 
properties and sold.  This is the equivalent of 10.61 MMBOE in respect of Trust II’s right to receive 90% 
of  the  net  proceeds  from  such  reserves  pursuant  to  the  net  profits  interest.    The  conveyance  of  the  net 
profits interest to Trust II consisted entirely of proved reserves of 10.61 MMBOE as of the January 1, 2012 
effective  date,  representing  3%  of  Whiting’s  proved  reserves  as  of  December  31,  2011  and  5%  (or  4.5 
MBOE/d) of its March 2012 average daily net production. 

2011 Acquisitions 

On July 28, 2011, the Company completed the acquisition of approximately 23,400 net acres and one well 
in the Missouri Breaks prospect in Richland County, Montana for an unadjusted purchase price of $46.9 
million.    Disclosures  of  pro  forma  revenues  and  net  income  for  the  acquisition  of  this  one  well  are  not 
material and have not been presented accordingly. 

On  March  18,  2011,  Whiting  and  an  unrelated  third  party  formed  Sustainable  Water  Resources,  LLC 
(“SWR”) to develop a water project in the state of Colorado.  The Company contributed $25.0 million for a 
75%  interest  in  SWR,  and  the  25%  noncontrolling  interest  in  SWR  was  ascribed  a  fair  value  of  $8.3 
million,  which  consisted  of  $2.5  million  in  cash  contributions,  as  well  as  $5.8  million  in  intangible  and 
fixed assets contributed to the joint venture.   

89 

 
 
On  February  15,  2011,  the  Company  completed  the  acquisition  of  6,000  net  undeveloped  acres  and 
additional working interests in the Pronghorn field in the Billings and Stark counties of North Dakota, for 
an aggregate purchase price of $40.0 million. 

2011 Divestiture 

On  September  29,  2011,  Whiting  sold  its  interest  in  several  non-core  oil  and  gas  producing  properties 
located  in  the  Karnes,  Live  Oak  and  DeWitt  counties  of  Texas  for  total  cash  proceeds  of  $64.8  million, 
resulting in a pre-tax gain on sale of $12.3 million.  Whiting used the net proceeds from the property sale to 
repay a portion of the debt outstanding under its credit agreement. 

2010 Activity 

In  September  2010,  Whiting  acquired  operated  interests  in  19  producing  oil  and  gas  wells,  undeveloped 
acreage, and gathering lines, all of which are located on approximately 20,400 gross (16,100 net) acres in 
Weld County, Colorado.  The aggregate purchase price was $19.2 million; substantially all of which was 
allocated to  the  oil  and  gas  properties  and  acreage  acquired.    Disclosures  of  pro  forma  revenues and  net 
income for the 19 wells acquired are not material and have not been presented accordingly. 

In  August  2010,  Whiting  acquired  oil  and  gas  leasehold  interests  covering  approximately  112,000  gross 
(90,200  net)  acres  in  the  Montana  portion  of  the  Williston  Basin  for  $26.0  million.    The  undeveloped 
acreage is located in Roosevelt and Sheridan counties. 

There were no significant divestitures during the year ended December 31, 2010. 

3. 

LONG-TERM DEBT 

Long-term debt consisted of the following at December 31, 2012 and 2011 (in thousands): 

Credit agreement ........................................................................................ 
7% Senior Subordinated Notes due 2014................................................... 
6.5% Senior Subordinated Notes due 2018 ................................................ 
  Total debt ............................................................................................... 

December 31, 

2012 
1,200,000 
250,000 
350,000 
1,800,000 

$ 

$ 

2011 

780,000 
250,000 
350,000 
1,380,000 

$ 

$ 

The following  table  shows  five  succeeding  fiscal  years  of  scheduled  maturities for  the  Company’s  long-
term debt as of December 31, 2012 (in thousands): 

Long-term debt ................................

$ 

- 

$ 

250,000 

$ 

- 

$  1,200,000 

$ 

- 

2013 

2014 

2015 

2016 

2017 

Credit  Agreement—Whiting  Oil  and  Gas  Corporation  (“Whiting  Oil  and  Gas”),  the  Company’s  wholly-
owned subsidiary, has a credit agreement with a syndicate of banks.  In October 2012, Whiting Oil and Gas 
entered  into  an  amendment  to  its  existing  credit  agreement  that  increased  the  borrowing  base  under  the 
facility  from  $1.5  billion  to  $2.5  billion,  of  which  $2.0  billion  has  been  committed  by  lenders  and  is 
available  for  borrowing.    We  may  increase  the  maximum  aggregate  amount  of  commitments  under  the 
credit agreement from $2.0 billion to $2.5 billion if certain conditions are satisfied, including the consent of 
lenders  participating  in  the  increase.    As  of  December  31,  2012,  the  Company  had  $797.6  million  of 
available borrowing capacity, which is net of $1,200.0 million in borrowings and $2.4 million in letters of 
credit outstanding.  The credit agreement provides for interest only payments until April 2016, when the 
agreement expires and all outstanding borrowings are due.   

90 

 
 
 
 
 
 
 
 
 
 
The borrowing base under the credit agreement is determined at the discretion of the lenders, based on the 
collateral value of the Company’s proved reserves that have been mortgaged to its lenders, and is subject to 
regular  redeterminations  on  May  1  and  November  1  of  each  year,  as  well  as  special  redeterminations 
described in the credit agreement, in each case which may reduce the amount of the borrowing base.  A 
portion of the revolving credit facility in an aggregate amount not to exceed $50.0 million may be used to 
issue  letters  of  credit  for  the  account  of  Whiting  Oil  and  Gas  or  other  designated  subsidiaries  of  the 
Company.  As of December 31, 2012, $47.6 million was available for additional letters of credit under the 
agreement. 

Interest accrues at the Company’s option at either (i) a base rate for a base rate loan plus the margin in the 
table  below,  where  the  base  rate  is  defined  as  the  greatest  of  the  prime  rate,  the  federal  funds  rate  plus 
0.50% or an adjusted LIBOR rate plus 1.00%, or (ii) an adjusted LIBOR rate for a Eurodollar loan plus the 
margin in the table below.  Additionally, the Company also incurs commitment fees, as set forth in the table 
below on the unused portion of the lesser of the aggregate commitments of the lenders or the borrowing 
base,  and  which  are included  as  a  component  of  interest  expense.    At  December  31,  2012,  the  weighted 
average interest rate on the outstanding principal balance under the credit agreement was 2.0%. 

Ratio of Outstanding Borrowings to Borrowing Base 

Less than 0.25 to 1.0 
Greater than or equal to 0.25 to 1.0 but less than 0.50 to 1.0 
Greater than or equal to 0.50 to 1.0 but less than 0.75 to 1.0 
Greater than or equal to 0.75 to 1.0 but less than 0.90 to 1.0 
Greater than or equal to 0.90 to 1.0 

Applicable 
Margin for Base 
Rate Loans 

Applicable 
Margin for 
Eurodollar Loans 

Commitment 
Fee 

0.50% 
0.75% 
1.00% 
1.25% 
1.50% 

1.50% 
1.75% 
2.00% 
2.25% 
2.50% 

0.375% 
0.375% 
0.50% 
0.50% 
0.50% 

The credit agreement contains restrictive covenants that may limit the Company’s ability to, among other 
things,  incur  additional  indebtedness,  sell  assets,  make  loans  to  others,  make  investments,  enter  into 
mergers, enter into hedging contracts, incur liens and engage in certain other transactions without the prior 
consent  of  its  lenders.    Except  for  limited  exceptions,  which  include  the  payment  of  dividends  on  the 
Company’s 6.25% convertible perpetual preferred stock, the credit agreement also restricts the Company’s 
ability to make any dividend payments or distributions on its common stock.  These restrictions apply to all 
of  the  net  assets  of  Whiting  Oil  and  Gas.    As  of  December  31,  2012,  total  restricted  net  assets  were 
$3,477.4 million, and the amount of retained earnings free from restrictions was $19.7 million.  The credit 
agreement requires the Company, as of the last day of any quarter, (i) to not exceed a total debt to the last 
four quarters’ EBITDAX ratio (as defined in the credit agreement) of 4.25 to 1.0 for quarters ending prior 
to and on December 31, 2012 and 4.0 to 1.0 for the quarters ending March 31, 2013 and thereafter and (ii) 
to  have  a  consolidated  current  assets  to  consolidated  current  liabilities  ratio  (as  defined  in  the  credit 
agreement and which includes an add back of the available borrowing capacity under the credit agreement) 
of not less than 1.0 to 1.0.  The Company was in compliance with its covenants under the credit agreement 
as of December 31, 2012. 

The obligations of Whiting Oil and Gas under the amended credit agreement are secured by a first lien on 
substantially  all  of  Whiting  Oil  and  Gas’  properties  included  in  the  borrowing  base  for  the  credit 
agreement.    The  Company  has  guaranteed  the  obligations  of  Whiting  Oil  and  Gas  under  the  credit 
agreement and has pledged the stock of Whiting Oil and Gas as security for its guarantee. 

Senior  Subordinated  Notes—In  October 2005,  the  Company  issued  at  par  $250.0 million  of  7%  Senior 
Subordinated Notes due February 2014.  The estimated fair value of these notes was $262.5 million as of 
December 31, 2012, based on quoted market prices for these debt securities, and such fair value is therefore 
designated as Level 1 within the valuation hierarchy.  

91 

 
 
 
 
 
 
 
 
 
Redemption of 7.25% Senior Subordinated Notes Due 2012 and 2013—In September 2010, the Company 
paid $383.5 million to redeem $150.0 million of its 7.25% Senior Subordinated Notes due 2012 and $220.0 
million  of  its  7.25%  Senior  Subordinated  Notes  due  2013,  which  consisted  of  a  redemption  price  of 
100.00% for the 2012 notes and 101.8125% for the 2013 notes and included the payment of accrued and 
unpaid  interest  on  such  notes.    The  Company  financed  the  redemption  of  the  2012  and  2013  notes  with 
borrowings under its credit agreement.  As a result of the redemption, Whiting recognized a $6.2 million 
loss  on  early  extinguishment  of  debt,  which  consisted  of  a  cash  charge  of  $4.0  million  related  to  the 
redemption premium on the 2013 notes and a non-cash charge of $2.2 million related to the acceleration of 
debt discounts and unamortized debt issuance costs. 

Issuance of 6.5% Senior Subordinated Notes Due 2018—In September 2010, the Company issued at par 
$350.0 million of 6.5% Senior Subordinated Notes due October 2018.  The Company used the net proceeds 
from this issuance to repay a portion of the debt (which was borrowed to redeem its 2012 and 2013 notes) 
outstanding under its credit agreement.  The estimated fair value of these notes was $375.4 million as of 
December 31, 2012, based on quoted market prices for these debt securities, and such fair value is therefore 
designated as Level 1 within the valuation hierarchy. 

The notes are unsecured obligations of Whiting Petroleum Corporation and are subordinated to all of the 
Company’s  senior  debt,  which  currently  consists  of  Whiting  Oil  and  Gas’  credit  agreement.    The 
Company’s obligations under the 2014 notes are fully, unconditionally, jointly and severally guaranteed by 
the  Company’s  100%-owned  subsidiaries,  Whiting  Oil  and  Gas  and  Whiting  Programs,  Inc.  (the  “2014 
Guarantors”).   Additionally,  the  Company’s  obligations  under  the  2018  notes  are  fully,  unconditionally, 
jointly  and  severally  guaranteed  by  the  Company’s  100%-owned  subsidiary,  Whiting  Oil  and  Gas 
(collectively with the 2014 Guarantors, the “Guarantors”).  Any subsidiaries other than the Guarantors are 
minor  subsidiaries  as  defined  by  Rule 3-10(h)(6)  of  Regulation S-X  of  the  Securities  and  Exchange 
Commission.  Whiting Petroleum Corporation has no assets or operations independent of this debt and its 
investments in guarantor subsidiaries. 

4. 

ASSET RETIREMENT OBLIGATIONS 

The Company’s asset retirement obligations represent the present value of estimated future costs associated 
with the plugging and abandonment of oil and gas wells, removal of equipment and facilities from leased 
acreage, and land restoration (including removal of certain onshore and offshore facilities in California) in 
accordance  with  applicable  local,  state  and  federal  laws.    The  Company  follows  FASB  ASC  Topic  410, 
Asset Retirement and Environmental Obligations, to determine its asset retirement obligation amounts by 
calculating  the  present  value  of  the  estimated  future  cash  outflows  associated  with  its  plug  and 
abandonment  obligations.   The current  portions at  December  31,  2012 and  2011  were  $11.6  million  and 
$7.7  million,  respectively,  and  are  included  in  accrued  liabilities  and  other.    Revisions  to  the  liability 
typically occur due to changes in estimated abandonment costs or well economic lives, or if federal or state 
regulators  enact  new  requirements  regarding  the  abandonment  of  wells.    The  following  table  provides  a 
reconciliation  of  the  Company’s  asset  retirement  obligations  for  the  year  ended  December  31,  2012  and 
2011 (in thousands): 

Year Ended December 31, 
2011 
2012 

Asset retirement obligation at January 1 .................................................... 
Additional liability incurred ....................................................................... 
Revisions in estimated cash flows ............................................................. 
Accretion expense ...................................................................................... 
Obligations on sold properties ................................................................... 
Liabilities settled ........................................................................................ 
Asset retirement obligation at December 31 .............................................. 

$ 

$ 

69,721 
9,292 
23,162 
7,263 
(4) 
(11,616) 
97,818 

$ 

$ 

83,083 
4,882 
(20,049) 
8,016 
(790) 
(5,421) 
69,721 

92 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
5. 

DERIVATIVE FINANCIAL INSTRUMENTS  

The  Company  is  exposed  to  certain  risks  relating  to  its  ongoing  business  operations,  and  Whiting  uses 
derivative  instruments  to  manage  its  commodity  price  risk.    Whiting  follows  FASB  ASC  Topic  815, 
Derivatives and Hedging, to account for its derivative financial instruments. 

Commodity  Derivative  Contracts—Historically,  prices  received  for  crude  oil  and  natural  gas  production 
have  been  volatile because  of  seasonal  weather  patterns,  supply  and  demand  factors,  worldwide  political 
factors  and  general  economic  conditions.    Whiting  enters  into  derivative  contracts,  primarily  costless 
collars,  to  achieve  a  more  predictable  cash  flow  by  reducing  its  exposure  to  commodity  price  volatility.  
Commodity  derivative  contracts  are  thereby  used  to  ensure  adequate  cash  flow  to  fund  the  Company’s 
capital  programs  and  to  manage  returns  on  acquisitions  and  drilling  programs.    Costless  collars  are 
designed to establish floor and ceiling prices on anticipated future oil and gas production.  While the use of 
these  derivative  instruments  limits  the  downside  risk  of  adverse  price  movements,  they  may  also  limit 
future revenues from favorable price movements.  The Company does not enter into derivative contracts for 
speculative or trading purposes. 

Whiting  Derivatives.    The  table  below  details  the  Company’s  costless  collar  derivatives,  including  its 
proportionate share of Trust II derivatives, entered into to hedge forecasted crude oil production revenues, 
as of February 6, 2013. 

Whiting Petroleum Corporation 

Derivative 
Instrument 
Collars 

Three-way collars(1) 

Period 
Jan – Dec 2013 
Jan – Dec 2014 
Jan – Dec 2013 
Total 

Contracted Crude Oil 
Volumes (Bbl) 
3,143,700 
49,290 
12,090,000 
15,282,990 

Weighted Average NYMEX Price 
Collar Ranges for Crude Oil (per Bbl) 
$ 48.20 - $  90.45 
$ 80.00 - $122.50 
$70.97 - $85.48 - $114.14 

(1)  A  three-way  collar  is  a  combination  of  options:  a  sold  call,  a  purchased  put  and  a  sold  put.    The  sold  call 
establishes a maximum price (ceiling) Whiting will receive for the volumes under contract.  The purchased put 
establishes a minimum price (floor), unless the market price falls below the sold put (sub-floor), at which point 
the  minimum price  would be NYMEX plus the difference between the purchased put and the  sold put  strike 
price.   

Derivatives Conveyed to Whiting USA Trust II.  In connection with the Company’s conveyance in March 
2012 of a term net profits interest to Trust II and related sale of 18,400,000 Trust II units to the public, the 
right to any future hedge payments made or received by Whiting on certain of its derivative contracts have 
been  conveyed  to  Trust  II,  and  therefore  such  payments  will  be  included  in  Trust  II’s  calculation  of  net 
proceeds.    Under  the  terms  of  the  aforementioned  conveyance,  Whiting  retains  10%  of  the  net  proceeds 
from the underlying properties, which results in third-party public holders of Trust II units receiving 90%, 
and Whiting retaining 10%, of the future economic results of commodity derivative contracts conveyed to 
Trust II.  The relative ownership of the future economic results of such commodity derivatives is reflected 
in the tables below.  No additional hedges are allowed to be placed on Trust II assets. 

The 10% portion of Trust II derivatives that Whiting has retained the economic rights to (and which are 
also included in the first derivative table above) are as follows: 

93 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Derivative 
Instrument 
Collars 

Period 
Jan – Dec 2013 
Jan – Dec 2014 
Total 

Contracted Crude Oil 
Volumes (Bbl) 
53,700 
49,290 
102,990 

NYMEX Price Collar Ranges for 
Crude Oil (per Bbl)  
$80.00 - $122.50 
$80.00 - $122.50 

Whiting Petroleum Corporation 

The 90% portion of Trust II derivative contracts of which Whiting has transferred the economic rights to 
third-party public holders of Trust II units (and which have not been reflected in the above tables) are as 
follows: 

Third-party Public Holders of Trust II Units 

Derivative 
Instrument 
Collars 

Period 
Jan – Dec 2013 
Jan – Dec 2014 
Total 

Contracted Crude Oil 
Volumes (Bbl) 
483,300 
443,610 
926,910 

NYMEX Price Collar Ranges for 
Crude Oil (per Bbl)  
$80.00 - $122.50 
$80.00 - $122.50 

Embedded Commodity Derivative Contracts—As of December 31, 2012, Whiting had entered into certain 
contracts for oil field goods or services, whereby the price adjustment clauses for such goods or services 
are linked to changes in NYMEX crude oil prices.  The Company has determined that the portions of these 
contracts  linked  to  NYMEX  oil  prices  are  not  clearly  and  closely  related  to  the  host  contracts,  and  the 
Company has therefore bifurcated these embedded pricing features from their host contracts and reflected 
them at fair value in the consolidated financial statements.  

Drilling Rig Contracts.  As of December 31, 2012, Whiting had entered into two contracts with drilling rig 
companies,  whereby  the  rig  day  rates  included  price  adjustment  clauses  that  are  linked  to  changes  in 
NYMEX crude oil prices.  These drilling rig contracts have termination dates of April 2014 and September 
2014.  The price adjustment formulas in the rig contracts stipulate that with every $10 increase or decrease 
in the price of NYMEX crude, the cost of drilling rig day rates to the Company will likewise increase or 
decrease by specific dollar amounts as set forth in each of the individual contracts.  As of December 31, 
2012,  the  aggregate  estimated  fair  value  of  the  embedded  derivatives  in  these  drilling  rig  contracts  was 
zero.  This is because over the remaining period of each contract’s term, the prices on the forward curve for 
crude oil at December 31, 2012 were within $10 of the prices on the forward curve on the date the contracts 
were  entered  into,  which  leads  to  no  change  in  the  expected  drilling  costs  under  these  contracts  and 
therefore no change in contractual value from the execution date. 

As  global  crude  oil  prices  increase  or  decrease,  the  demand  for  drilling  rigs  in  North  America  similarly 
increases and decreases.  Because the supply of onshore drilling rigs in North America is fairly inelastic, 
these changes in rig demand cause drilling rig day rates to increase or decrease in tandem with crude oil 
price fluctuations.  When the Company enters into a long-term drilling rig contract that has a fixed rig day 
rate, which does not increase or decrease with changes in oil prices, the Company is exposed to the risk of 
paying higher than the market day rate for drilling rigs in a climate of declining oil prices.  This in turn 
could  have  a  negative  impact  on the  Company’s  oil and  gas  well  economics.    As  a  result,  the  Company 
reduces  its  exposure  to  this  risk  by  entering  into  certain  drilling  rig  contracts  which  have  day  rates  that 
fluctuate in tandem with changes in oil prices. 

CO2 Purchase Contract.  In May 2011, Whiting entered into a long-term contract to purchase CO2 from 
2015  through  2029  for  use  in  its  EOR  project  that  is  being  carried  out  at  its  North  Ward  Estes  field  in 
Texas.   The  price  per Mcf  of  CO2  purchased  under this  agreement  increases  or  decreases  as  the  average 
price of NYMEX crude oil likewise increases or decreases.  As of December 31, 2012, the estimated fair 
value of the embedded derivative in this CO2 purchase contract was an asset of $23.7 million. 

94 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Although CO2 is not a commodity that is actively traded on a public exchange, the market price for CO2 
generally fluctuates in tandem with increases or decreases in crude oil prices.  When Whiting enters into a 
long-term CO2 purchase contract where the price of CO2 is fixed and does not adjust with changes in oil 
prices, the Company is exposed to the risk of paying higher than the market rate for CO2 in a climate of 
declining oil and CO2 prices.  This in turn could have a negative impact on the project economics of the 
Company’s CO2 flood at North Ward Estes.  As a result, the Company reduces its exposure to this risk by 
entering into certain CO2 purchase contracts which have prices that fluctuate along with changes in crude 
oil prices. 

Derivative  Instrument  Reporting—All  derivative  instruments  are  recorded  on  the  consolidated  balance 
sheet at fair value, other than derivative instruments that meet the “normal purchase normal sale” exclusion.  
The  following  tables  summarize  the  location  and  fair  value  amounts  of  all  derivative  instruments  in  the 
consolidated balance sheets (in thousands): 

Not Designated as  
ASC 815 Hedges 
Derivative assets: 

Balance Sheet Classification 

Fair Value 

December 31, 
 2012 

December 31, 
 2011 

Commodity contracts ................................Prepaid expenses and other ....................$ 
Embedded commodity contracts ....................
Prepaid expenses and other .................... 
Commodity contracts ................................Other long-term assets ........................... 
Embedded commodity contracts ....................Other long-term assets ........................... 
Total derivative assets ................................................................................... $ 

Derivative liabilities: 

Commodity contracts ................................Current derivative liabilities ..................$ 
Commodity contracts ................................Non-current derivative liabilities ........... 
Total derivative liabilities.............................................................................. $ 

9,472 
- 
1,864 
23,715 
35,051 

21,955 
1,678 
23,633 

$ 

$ 

$ 

$ 

5,719 
240 
- 
13,347 
19,306 

73,647 
47,763 
121,410 

The  following  tables  summarize  the  effects  of  commodity  derivatives  instruments  on  the  consolidated 
statements of income for the twelve months ended December 31, 2012 and 2011 (in thousands): 

ASC 815 Cash Flow 
Hedging Relationships (1) 
Commodity contracts ...............................

Income Statement Classification  
Gain on hedging activities ................................$ 

Gain Reclassified from OCI into 
Income (Effective Portion) (1) 
Year Ended December 31, 
2011 
2012 

2,338 

$ 

8,758 

(1)  Effective April 1, 2009, the Company elected to de-designate all of its commodity derivative contracts that 
had  been  previously  designated  as  cash  flow  hedges  and  elected  to  discontinue  hedge  accounting 
prospectively.  As a result, such mark-to-market values at March 31, 2009 were frozen in accumulated other 
comprehensive income as of the de-designation date and are being reclassified into earnings as the original 
hedged transactions affect income.  During the next twelve months, the Company expects to reclassify into 
earnings  from accumulated other comprehensive income net after-tax losses of $1.2 million related to de-
designated commodity hedges. 

Not Designated as 
ASC 815 Hedges 
Commodity contracts .......................Commodity derivative (gain) loss, net .............................
$ 
Embedded commodity contracts ......Commodity derivative (gain) loss, net ........  
$ 

Total ................................................................................................... 

Income Statement Classification 

(Gain) Loss Recognized in Income  
Year Ended December 31, 
2011 
2012 
(11,270) 
(75,782) 
(13,587) 
(10,129) 
(24,857) 
(85,911) 

$ 

$ 

Contingent  Features  in  Derivative  Instruments.    None  of  the  Company’s  derivative  instruments  contain 
credit-risk-related  contingent  features.    Counterparties  to  the  Company’s  derivative  contracts  are  high 

95 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
credit-quality financial institutions that are lenders under Whiting’s credit agreement.  At the time Whiting 
enters into derivative contracts, the Company uses only credit agreement participants to hedge with, since 
these  institutions  are  secured  equally  with  the  holders  of  Whiting’s  bank  debt,  which  eliminates  the 
potential need to post collateral when Whiting is in a derivative liability position.  As a result, the Company 
is not required to post letters of credit or corporate guarantees for its derivative counterparties in order to 
secure contract performance obligations. 

6. 

FAIR VALUE MEASUREMENTS 

The Company follows FASB ASC Topic 820, Fair Value Measurement and Disclosure, which establishes 
a  three-level  valuation  hierarchy  for  disclosure  of  fair  value  measurements.    The  valuation  hierarchy 
categorizes assets and liabilities measured at fair value into one of three different levels depending on the 
observability of the inputs employed in the measurement.  The three levels are defined as follows: 

•  Level  1:  Quoted  Prices  in  Active  Markets  for  Identical  Assets  –  inputs  to  the  valuation 
methodology are quoted prices (unadjusted) for identical assets or liabilities in active markets. 

•  Level 2:  Significant Other Observable Inputs – inputs to the valuation methodology include quoted 
prices for similar assets and liabilities in active markets, and inputs that are observable for the asset 
or liability, either directly or indirectly, for substantially the full term of the financial instrument. 

•  Level 3:  Significant Unobservable Inputs – inputs to the valuation methodology are unobservable 

and significant to the fair value measurement. 

A  financial  instrument’s  categorization  within  the  valuation  hierarchy  is  based  upon  the  lowest  level  of 
input that is significant to the fair value measurement.  The Company’s assessment of the significance of a 
particular  input  to  the  fair  value  measurement  in  its  entirety  requires  judgment  and  considers  factors 
specific to the asset or liability.  The Company reflects transfers between the three levels at the beginning 
of the reporting period in which the availability of observable inputs no longer justifies classification in the 
original level. 

The following tables present information about the Company’s financial assets and liabilities measured at 
fair value on a recurring basis as of December 31, 2012 and 2011, and indicate the fair value hierarchy of 
the valuation techniques utilized by the Company to determine such fair values (in thousands): 

Level 1 

Level 2 

Level 3 

Total Fair Value  
December 31, 
2012  

Financial Assets 
Commodity derivatives – current  .............................
$ 
Commodity derivatives – non-current ................ 
Embedded commodity derivatives – non-

current................................................................
Total financial assets ................................$ 

Financial Liabilities 
Commodity derivatives – current ..............................
Commodity derivatives – non-current .......................
Total financial liabilities ................................

$ 

$ 

- 
- 

- 
- 

- 
- 
- 

$ 

$ 

$ 

$ 

9,472 
1,864 

- 
11,336 

21,955 
1,678 
23,633 

$ 

$ 

$ 

$ 

- 
- 

23,715 
23,715 

- 
- 
- 

$ 

$ 

$ 

$ 

9,472 
1,864 

23,715 
35,051 

21,955 
1,678 
23,633 

96 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Level 1 

Level 2 

Level 3 

Total Fair Value  
December 31, 
2011  

Financial Assets 
Commodity derivatives – current ..............................
Embedded commodity derivatives – current .............
Embedded commodity derivatives – non-

$ 

current................................................................
Total financial assets ................................$ 

Financial Liabilities 
Commodity derivatives – current ..............................
Commodity derivatives – non-current .......................
Total financial liabilities ................................

$ 

$ 

- 
- 

- 
- 

- 
- 
- 

$ 

$ 

$ 

$ 

5,719 
240 

367 
6,326 

73,647 
47,763 
121,410 

$ 

$ 

$ 

$ 

- 
- 

12,980 
12,980 

- 
- 
- 

$ 

$ 

$ 

$ 

5,719 
240 

13,347 
19,306 

73,647 
47,763 
121,410 

The following methods and assumptions were used to estimate the fair values of the assets and liabilities in 
the tables above: 

Commodity Derivatives.  Commodity derivative instruments consist of costless collars for crude oil.  The 
Company’s  costless  collars  are  valued  based  on  an  income  approach.    These  option  models  consider 
various  assumptions,  including  quoted  forward  prices  for  commodities,  time  value  and  volatility  factors.  
These  assumptions  are  observable  in  the  marketplace  throughout  the  full  term  of  the  contract,  can  be 
derived from observable data or are supported by observable levels at which transactions are executed in 
the marketplace, and are therefore designated as Level 2 within the valuation hierarchy.  The discount rates 
used in the fair values of these instruments include a measure of either the Company’s or the counterparty’s 
nonperformance  risk,  as  appropriate.    The  Company  utilizes  counterparties’  valuations  to  assess  the 
reasonableness of its own valuations. 

Embedded  Commodity  Derivatives.    Embedded  commodity  derivatives  relate  to  long-term  drilling  rig 
contracts  as  well  as  a  long-term  CO2  purchase  contract,  which  all  have  price  adjustment  clauses  that  are 
linked to changes in NYMEX crude oil prices.  Whiting has determined that the portions of these contracts 
linked to NYMEX oil prices are not clearly and closely related to their corresponding host contracts, and 
the Company has therefore bifurcated these embedded pricing features from the host contracts and reflected 
them  at  fair  value  in  its  consolidated  financial  statements.    These  embedded  commodity  derivatives  are 
valued based on an income approach.  These option models consider various assumptions, including quoted 
forward  prices  for  commodities,  LIBOR  discount  rates  and  either  the  Company’s  or  the  counterparty’s 
nonperformance risk, as appropriate.   

The  assumptions  used  in  the  valuation  of  the  drilling  rig  contracts  are  observable  in  the  marketplace 
throughout  the  full  term  of  the  contract,  can  be  derived  from  observable  data  or  are  supported  by 
observable levels at which transactions are executed in the marketplace, and the fair value measurements of 
the drilling rig contracts are therefore designated as Level 2 within the valuation hierarchy. 

The assumptions used in the CO2 contract valuation, however, include inputs that are both observable in the 
marketplace as  well  as unobservable  during  the term  of the contract.   With  respect  to forward  prices  for 
NYMEX crude oil where there is a lack of price transparency in certain future periods, such unobservable 
oil price inputs are significant to the CO2 contract valuation methodology, and the contract’s fair value is 
therefore designated as Level 3 within the valuation hierarchy.  

Level  3  Fair  Value  Measurements.    A  third-party  valuation  specialist  is  utilized  on  a  quarterly  basis  to 
determine  the  fair  value  of  the  embedded  commodity  derivative  instrument  designated  as  Level  3.    The 
Company  reviews  these  valuations  (including  the  related  model  inputs  and  assumptions)  and  analyzes 
changes in fair value measurements between periods.  The Company corroborates such inputs, calculations 

97 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
and  fair  value  changes  using  various  methodologies,  and  Whiting  reviews  unobservable  inputs  for 
reasonableness utilizing relevant information from other published sources. 

The  following  table  presents  a  reconciliation  of  changes  in  the  fair  value  of  financial  assets  (liabilities) 
designated  as  Level  3  in  the  valuation  hierarchy  for  the  year  ended  December  31,  2012  and  2011  (in 
thousands):   

Fair value asset, beginning of period ................................................................$ 
Unrealized gains (losses) on embedded commodity derivative contracts 

included in earnings(1) ................................................................................................
Transfers into (out of) Level 3(2) .........................................................................................
Fair value asset, end of period .........................................................................................

10,735 
- 
23,715 

$ 

11,081 
1,899 
12,980 

$ 

Year Ended December 31, 
2011 
2012 

12,980 

$ 

- 

(1)  Included in commodity derivative (gain) loss, net in the consolidated statements of income. 
(2)  With respect to forward prices for NYMEX crude oil where there is a lack of price transparency in certain future 
periods  during  the  term  of  the  CO2  contract,  such  unobservable  oil  price  inputs  became  significant  to  the 
valuation methodology, and the contract’s fair value was therefore transferred from Level 2 to Level 3 within the 
valuation hierarchy during the third quarter of 2011.  

Quantitative  Information  About  Level  3  Fair  Value  Measurements.    The  significant  unobservable  inputs 
used in the fair value measurement of the Company’s embedded commodity derivative contract designated 
as Level 3 are as follows: 

Fair Value at 
December 31, 2012 
(in thousands) 

Valuation 
Technique 

Embedded commodity 

derivative ...............................

$ 23,715 

Option model 

Unobservable 
Input 
Future prices of 
NYMEX crude oil after 
December 31, 2020 

Range 
(per Bbl) 

$88.02 - $111.61 

Sensitivity To Changes In Significant Unobservable Inputs.  As presented in the table above, the significant 
unobservable  inputs  used  in  the  fair  value  measurement  of  Whiting’s  embedded  commodity  derivative 
within its CO2 purchase contract are the future prices of NYMEX crude oil from January 2021 to December 
2029.    Significant  increases  (decreases)  in  these  unobservable  inputs  in  isolation  would  result  in  a 
significantly lower (higher) fair value asset measurement. 

Nonrecurring  Fair  Value  Measurements.    The  Company  applies  the  provisions  of  the  fair  value 
measurement  standard  to  its  nonrecurring,  non-financial  measurements,  including  proved  oil  and  gas 
property impairments.  These assets and liabilities are not measured at fair value on an ongoing basis but 
are  subject  to  fair  value  adjustments  only  in  certain  circumstances.    The  following  tables  present 
information  about  the  Company’s  non-financial  assets  and  liabilities  measured  at  fair  value  on  a 
nonrecurring  basis  as  of  December  31,  2012  and  2011,  and  indicates  the  fair  value  hierarchy  of  the 
valuation techniques utilized by the Company to determine such fair values (in thousands): 

98 

 
 
 
 
 
 
 
 
 
 
 
 
Net Carrying 
Value as of 
December 31, 
2012 
$  23,473 

Fair Value Measurements Using 

Level 1 
- 

Level 2 
- 

Level 3 
$  23,473 

Loss (Before 
Tax) Year 
Ended 
December 31, 
2012 

$ 

46,924 

Proved property impairments(1) ...................

(1)  During the year ended December 31, 2012, proved oil and gas properties with a carrying amount of $70.4 million 
were written down to their fair value of $23.5 million, resulting in a non-cash impairment charge of $46.9 million.  
The  impairment  consisted  of  a  $46.3  million  write-down  in  the  Rocky  Mountains  region  related  to  changes  in 
estimated reserves and a $0.6 million write-down in the Michigan region related to decreased natural gas prices. 

Net Carrying 
Value as of 
December 31, 
2011 
$  1,612 

Fair Value Measurements Using 

Level 1 
- 

Level 2 
- 

Level 3 
$  1,612 

Loss (Before 
Tax) Year 
Ended 
December 31, 
2011 

$ 

3,241 

Proved property impairments(1) ...................

(1)  During the year ended December 31, 2011, proved oil and gas properties with a carrying amount of $4.8 million 
were written down to their fair value of $1.6 million, resulting in a non-cash impairment charge of $3.2 million.  
The impairment consisted of a $2.4 million write-down in the Rocky Mountains region and a $0.8 million write-
down in the Michigan region.  These impairments were mainly due to decreases in natural gas prices. 

The following methods and assumptions were used to estimate the fair values of the non-financial liabilities 
in the tables above: 

Proved Property Impairments.  Once the Company has determined that a proved property impairment has 
occurred, the cost of the property is written down to its fair value, which is determined using net discounted 
future  cash flows  from  the  producing  property,  and  such  discounted cash  flows  are  based  on the  income 
approach.  The  factors  used  to  determine  the  estimated  future  cash  flows  include,  but  are  not  limited  to, 
internal  estimates  of  reserves,  future  commodity  prices,  production  levels,  operating  costs,  development 
expenditures,  and  a  risk-adjusted  discount  rate,  which  are  all  Level  3  inputs.    Quantitative  information 
about the unobservable inputs used in the Company’s significant nonrecurring fair value measurement of 
its proved oil and natural gas properties (designated as Level 3 in the fair value hierarchy) in 2012 is as 
follows: 

Unobservable Input 
Future production ...............................................................................................................  
Future prices of crude oil per Bbl .......................................................................................  
Future prices of NGLs per Bbl ...........................................................................................  
Future prices of natural gas per Mcf ...................................................................................  
Future operating costs per BOE .........................................................................................  
Productive lives of fields ....................................................................................................  
Discount rate ......................................................................................................................  

Quantitative Data 
836 MBOE 
$ 80.75 - $110.38 
$ 51.25 - $  73.54 
$   3.76 - $  10.17 
$ 10.09 - $  74.40 
15 – 29 years 
15% 

7. 

DEFERRED COMPENSATION 

Production Participation Plan—The Company has a Production Participation Plan (the “Plan”) in which 
all  employees  participate.   On  an  annual  basis,  interests in  oil  and  gas  properties  acquired,  developed  or 
sold during the year are allocated to the Plan as determined annually by the Compensation Committee of 
the Company’s Board of Directors.  Once allocated, the interests (not legally conveyed) are fixed.  Interest 
allocations prior to 1995 consisted of 2%-3% overriding royalty interests.  Interest allocations since 1995 
have been 2%-5% of oil and gas sales less lease operating expenses and production taxes. 

99 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Payments  of  100%  of  the  year’s  Plan  interests  to  employees  and  the  vested  percentages  of  former 
employees  in  the  year’s  Plan  interests  are  made  annually  in  cash  after  year-end.    Accrued  compensation 
expense under the Plan for the years ended December 31, 2012, 2011 and 2010 amounted to $44.7 million, 
$34.1  million  and  $27.7  million,  respectively,  charged  to  general  and  administrative  expense  and  $4.6 
million, $4.2 million and $3.7 million, respectively, charged to exploration expense. 

Employees vest in the Plan ratably at 20% per year over a five-year period.  Pursuant to the terms of the 
Plan, (i) employees who terminate their employment with the Company are entitled to receive their vested 
allocation of future Plan year payments on an annual basis; (ii) employees will become fully vested at age 
62, regardless of when their interests would otherwise vest; and (iii) any forfeitures inure to the benefit of 
the Company. 

The Company uses average historical prices to estimate the vested long-term Production Participation Plan 
liability.  At December 31, 2012, the Company used three-year average historical NYMEX prices of $89.62 
for crude oil and $3.77 for natural gas to estimate this liability.  If the Company were to terminate the Plan 
or  upon  a  change  in  control  of  the  Company  (as  defined  in  the  Plan),  all  employees  fully  vest  and  the 
Company would distribute to each Plan participant an amount, based upon the valuation method set forth in 
the Plan, in a lump sum payment twelve months after the date of termination or within one month after a 
change in control event.  Based on current strip prices at December 31, 2012, if the Company elected to 
terminate the Plan or if a change of control event occurred, it is estimated that the fully vested lump sum 
cash  payment  to  employees  would  approximate  $175.0  million.    This  amount  includes  $10.5  million 
attributable  to  proved  undeveloped  oil  and  gas  properties  and  $49.3  million  relating  to  the  short-term 
portion of the Plan liability, which has been accrued as a current payable and was paid in January 2013.  
The ultimate sharing contribution for proved undeveloped oil and gas properties will be awarded in the year 
of Plan termination or change of control.  However, the Company has no intention to terminate the Plan. 

The following table presents changes in the Plan’s estimated long-term liability (in thousands): 

Long-term Production Participation Plan liability at January 1 ................. 
Change in liability for accretion, vesting, changes in estimates and new 

Plan year activity ................................................................................ 
Accrued compensation expense reflected as a current liability ................. 
Long-term Production Participation Plan liability at December 31 ........... 

Year Ended December 31, 
2011 
2012 

$ 

80,659 

$ 

81,524 

63,135 
(49,311) 
94,483 

$ 

37,429 
(38,294) 
80,659 

$ 

The  Company  records  the  expense  associated  with  changes  in  the  present  value  of  estimated  future 
payments  under  the  Plan  as  a  separate  line  item  in  the  consolidated  statements  of  income.    The  amount 
recorded  is  not  allocated  to  general  and  administrative  expense  or  exploration  expense  because  the 
adjustment of the liability is associated with the future net cash flows from the oil and gas properties rather 
than current period performance.  The following table presents the estimated allocation of the change in the 
liability if the Company did allocate the adjustment to these specific line items (in thousands): 

General and administrative expense ............................... 
Exploration expense ........................................................ 
Total ......................................................................... 

$ 

$ 

2012 

12,544 
1,280 
13,824 

Year Ended December 31, 
2011 

$ 

$ 

(770) 
(95) 
(865) 

$ 

$ 

2010 

10,676 
1,415 
12,091 

401(k)  Plan—The  Company  has  a  defined  contribution  retirement  plan  for  all  employees.    The  plan  is 
funded  by  employee  contributions  and  discretionary  Company  contributions. 
  The  Company’s 
contributions  for  2012,  2011  and  2010  were  $5.9  million,  $5.0  million  and  $3.6  million,  respectively.  
Employees vest in employer contributions at 20% per year of completed service. 

100 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
8. 

SHAREHOLDERS’ EQUITY AND NONCONTROLLING INTEREST 

Common  Stock—In  May 2011,  Whiting’s  stockholders  approved  an  amendment  to  the  Company’s 
Restated  Certificate  of  Incorporation to increase the number  of authorized  shares  of  common  stock  from 
175,000,000 shares to 300,000,000 shares. 

Stock Split.  On January 26, 2011, the Company’s Board of Directors approved a two-for-one split of the 
Company's shares of common stock to be effected in the form of a stock dividend.  As a result of the stock 
split, stockholders of record on February 7, 2011 received one additional share of common stock for each 
share  of  common  stock  held.    The  additional  shares  of  common  stock  were  distributed  on  February  22, 
2011.  Concurrently with the payment of such stock dividend in February 2011, there was a transfer from 
additional  paid-in  capital  to  common  stock  of  $0.1  million,  which  amount  represents  $0.001  per  share 
(being the par value thereof) for each share of common stock so issued.  All common share and per share 
amounts  in  these  consolidated  financial  statements  and  related  notes  for  periods  prior  to  February  2011 
have  been  retroactively  adjusted  to  reflect  the  stock  split.    The  common  stock  dividend  resulted  in  the 
conversion price for Whiting’s 6.25% Convertible Perpetual Preferred Stock being adjusted from $43.4163 
to $21.70815. 

6.25% Convertible Perpetual Preferred Stock—In June 2009, the Company completed a public offering of 
6.25%  convertible  perpetual  preferred  stock  (“preferred  stock”),  selling  3,450,000  shares  at  a  price  of 
$100.00 per share. As of December 31, 2012, however, only 172,391 shares of preferred stock remained 
outstanding. 

Each holder of the preferred stock is entitled to an annual dividend of $6.25 per share to be paid quarterly 
in cash, common stock or a combination thereof on March 15, June 15, September 15 and December 15, 
when  and  if  such  dividend  has  been  declared  by  Whiting’s  board  of  directors.    Each  share  of  preferred 
stock  has  a  liquidation  preference  of  $100.00  per  share  plus  accumulated  and  unpaid  dividends  and  is 
convertible,  at  a  holder’s  option,  into  shares  of Whiting’s  common  stock  based on  a  conversion  price  of 
$21.70815,  subject  to  adjustment  upon  the  occurrence  of  certain  events.    The  preferred  stock  is  not 
redeemable  by  the  Company.    At  any  time  on  or  after  June  15,  2013,  the  Company  may  cause  all 
outstanding shares of this preferred stock to be converted into shares of common stock if the closing price 
of our common stock equals or exceeds 120% of the then-prevailing conversion price for at least 20 trading 
days in a period of 30 consecutive trading days.  The holders of preferred stock have no voting rights unless 
dividends payable on the preferred stock are in arrears for six or more quarterly periods. 

Induced  Conversion  of  6.25%  Convertible  Perpetual  Preferred  Stock.    In  August  2010,  Whiting 
commenced  an  offer  to  exchange  up  to  3,277,500,  or  95%,  of  its  preferred  stock  for  the  following 
consideration  per  share  of  preferred  stock:  4.6066  shares  of  its  common  stock  and  a  cash  premium  of 
$14.50.  The exchange offer expired in September 2010 and resulted in the Company accepting 3,277,500 
shares of preferred stock in exchange for the issuance of 15,098,020 shares of common stock and a cash 
premium payment of $47.5 million.  Following the exchange offer, the 3,277,500 shares of preferred stock 
accepted  in  the  exchange  were  cancelled,  and  a  total  of  172,500  shares  of  preferred  stock  remained 
outstanding.   

Equity  Incentive  Plan—The  Company  maintains  the  Whiting  Petroleum  Corporation  2003  Equity 
Incentive Plan (the “Equity Plan”), pursuant to which 2,978,323 shares of the Company’s common stock 
have been reserved for issuance.  No employee or officer participant may be granted options for more than 
600,000  shares  of  common  stock,  stock  appreciation  rights  relating  to  more  than  600,000  shares  of 
common  stock,  or  more  than  300,000  shares  of  restricted  stock  during  any  calendar  year.    As  of 
December 31, 2012, 1,178,071 shares of common stock remained available for grant under the Plan.  

For the years ended December 31, 2012, 2011 and 2010, total stock compensation expense recognized for 
restricted share awards and stock options was $18.2 million, $13.5 million and $8.9 million, respectively.   

101 

 
 
Restricted Shares.  Restricted stock awards for executive officers, directors and employees generally vest 
ratably  over  a  three-year  service  period.    The  Company  uses  historical  data  and  projections  to  estimate 
expected  employee  behaviors  related  to  restricted  stock  forfeitures.    The  expected  forfeitures  are  then 
included as part of the grant date estimate of compensation cost.  For service-based restricted stock awards, 
the grant date fair value is determined based on the closing bid price of the Company’s common stock on 
the grant date.  

In  January  2012,  2011  and  2010,  444,501  shares,  201,420  shares  and  180,898  shares,  respectively,  of 
restricted  stock,  subject  to  certain  market-based  vesting  criteria  in  addition  to  the  standard  three-year 
service condition, were granted to executive officers under the Equity Plan.  Vesting each year is subject to 
the  condition  that  Whiting’s  stock  price  increases  by  a  greater  percentage,  or  decreases  by  a  lesser 
percentage,  than  the  average  percentage  increase  or  decrease,  respectively,  of  the  stock  prices  of  a  peer 
group of companies.  The market-based conditions must be met in order for the stock awards to vest, and it 
is therefore possible that no shares could vest in one or more of the three-year vesting periods.  However, 
the  Company  recognizes  compensation  expense  for  awards  subject  to  market  conditions  regardless  of 
whether it becomes probable that these conditions will be achieved or not, and compensation expense is not 
reversed if vesting does not actually occur. 

For these awards subject to market conditions, the grant date fair value was estimated using a Monte Carlo 
valuation model.  The Monte Carlo model is based on random projections of stock price paths and must be 
repeated numerous times to achieve a probabilistic assessment.  Expected volatility was calculated based on 
the historical volatility of Whiting’s common stock, and the risk-free interest rate is based on U.S. Treasury 
yield curve rates with maturities consistent with the three-year vesting period.  The key assumptions used in 
valuing the market-based restricted shares were as follows: 

2012 
Number of simulations ................................................................
65,000 
Expected volatility ................................................................51.9% 
0.35% 
Risk-free rate................................................................

2011 
65,000 
75.8% 
1.00% 

2010 
65,000 
75.9% 
1.40% 

The grant date fair value of the market-based restricted stock as determined by the Monte Carlo valuation 
model  was  $29.45  per  share,  $42.20  per  share  and  $22.99  per  share  in  January  2012,  2011  and  2010, 
respectively. 

The  following  table  shows  a  summary  of  the  Company’s  nonvested  restricted  stock  as  of  December 31, 
2010, 2011 and 2012 as well as activity during the years then ended: 

Number 
of Shares 

Weighted Average 
Grant Date 
Fair Value 

Restricted stock awards nonvested, January 1, 2010 .............................................
Granted ..................................................................................................................
Vested ....................................................................................................................
Forfeited .................................................................................................................
Restricted stock awards nonvested, December 31, 2010 ................................
Granted ..................................................................................................................
Vested ....................................................................................................................
Forfeited .................................................................................................................
Restricted stock awards nonvested, December 31, 2011 ................................
Granted ..................................................................................................................
Vested ....................................................................................................................
Forfeited .................................................................................................................
Restricted stock awards nonvested, December 31, 2012 ................................

1,036,528 
324,770 
(465,194) 
(26,734) 
869,370 
304,355 
(429,136) 
(20,194) 
724,395 
592,400 
(357,170) 
(8,599) 
951,026 

$ 

$ 

11.86 
28.44 
14.49 
24.10 
16.27 
48.48 
15.32 
33.53 
29.88 
34.45 
17.91 
51.72 
37.02 

102 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
As  of  December  31,  2012,  there  was  $10.5  million  of  total  unrecognized  compensation  cost  related  to 
unvested restricted stock granted under the stock incentive plans.  That cost is expected to be recognized 
over a weighted average period of 1.8 years. For the years ended December 31, 2012, 2011 and 2010, the 
total fair value of restricted stock vested was $18.9 million, $26.0 million and $17.1 million, respectively. 

Stock  Options.   In  January  2012,  2011  and  2010,  45,359  stock  options,  80,820 stock  options and  55,302 
stock  options,  respectively,  were  granted  under  the  Equity  Plan  to  certain  executive  officers  of  the 
Company with exercise prices equal to the closing market price of the Company’s common stock on the 
grant date.  These stock options vest ratably over a three-year service period from the grant date and are 
exercisable immediately upon vesting through the tenth anniversary of the grant date. 

The Company uses a Black-Scholes option-pricing model to estimate the fair value of stock option awards.  
Because  the  Company  first  granted  stock  options  in  2009,  it  does  not  have  historical  exercise  data  upon 
which  to  estimate  the  expected  term  of  the  options.    As  such,  the  Company  has  elected  to  estimate  the 
expected term of the stock options granted using the “simplified” method for “plain vanilla” options.  The 
expected volatility at the grant date is based on the historical volatility of Whiting’s common stock, and the 
risk-free  interest  rate  is  determined  based  on  the  yield  on  U.S.  Treasury  strips  with  maturities  similar  to 
those of the expected term of the stock options.  The following table summarizes the assumptions used to 
estimate the grant date fair value of stock options awarded in each respective year: 

Risk-free interest rate ................................................................1.19% 
Expected volatility ................................................................61.4% 
6.0 yrs. 
Expected term ................................................................
Dividend yield................................................................
- 

2012 

2011 
2.47% 
59.3% 
6.0 yrs. 
- 

2010 
2.75% 
58.8% 
 6.0 yrs. 
- 

The  grant  date  fair  value  of  the  stock  options  awarded,  as  determined  by  the  Black-Scholes  valuation 
model,  was  $28.88  per  share,  $34.15  per  share  and  $19.44  per  share  in  January  2012,  2011  and  2010, 
respectively. 

The  following  table  shows  a  summary  of  the  Company’s  stock  options  outstanding  as  of  December  31, 
2010, 2011 and 2012 as well as activity during the years then ended (aggregate intrinsic value presented in 
thousands): 

103 

 
 
 
 
 
 
 
 
 
 
Weighted 
Average 
Remaining 
Contractual 
Term 
(in Years) 

Aggregate 
Intrinsic 
Value 

Options outstanding at January 1, 2010 ................................
Granted ................................................................................................
Exercised ................................................................................................
Forfeited or expired................................................................
Options outstanding at December 31, 2010 ................................
Granted ................................................................................................
Exercised ................................................................................................
Forfeited or expired................................................................
Options outstanding at December 31, 2011 ................................
Granted ................................................................................................
Exercised ................................................................................................
Forfeited or expired................................................................
Options outstanding at December 31, 2012 ................................
Options vested and expected to vest at December 

Number of 
Options 
  241,214 
55,302 
- 
- 
  296,516 
80,820 
- 
- 
  377,336 
45,359 
- 
- 
  422,695 

31, 2012 ................................................................   422,695 
  305,006 

Options exercisable at December 31, 2012 ................................

Weighted 
Average 
Exercise Price 
per Share 
12.76 
$ 
34.31 
- 
- 
16.78 
60.28 
- 
- 
26.09 
51.22 
- 
- 
28.79 

$ 

$ 

$ 

$ 

- 

- 

- 

$  7,884.6 

$ 
$ 

28.79 
19.56 

$  7,884.6 
$  7,717.5 

6.9 

6.9 
6.4 

Unrecognized  compensation  cost  as  of  December 31,  2012  related  to  unvested  stock  option  awards  was 
$1.0 million, which is expected to be recognized over a period of 1.7 years.   

Rights Agreement—In 2006, the Board of Directors of the Company declared a dividend of one preferred 
share purchase right (a “Right”) for each outstanding share of common stock of the Company payable to 
the  stockholders  of  record  as  of  March 2,  2006.    As  a  result  of  the  two-for-one  split  of  the  Company’s 
common  stock  effective  February  22,  2011,  one-half  of  a  Right  is  now  associated  with  each  share  of 
common stock.  Each Right entitles the registered holder to purchase from the Company one one-hundredth 
of a share of Series A Junior Participating Preferred Stock, par value $0.001 per share (“Preferred Shares”), 
of the Company at a price of $180.00 per one one-hundredth of a Preferred Share, subject to adjustment.  If 
any  person  becomes  a  15%  or  more  stockholder  of  the  Company,  then  each  Right  (subject  to  certain 
limitations) will entitle its holder to purchase, at the Right’s then current exercise price, a number of shares 
of common stock of the Company or of the acquirer having a market value at the time of twice the Right’s 
per share exercise price.  The Company’s Board of Directors may redeem the Rights for $0.001 per Right 
at  any  time  prior  to  the  time  when  the  Rights  become  exercisable.    Unless  the  Rights  are  redeemed, 
exchanged or terminated earlier, they will expire on February 23, 2016. 

Noncontrolling Interest—The noncontrolling interest represents an unrelated third party’s 25% ownership 
interest in SWR.  The table below summarizes the activity for the equity attributable to the noncontrolling 
interest (in thousands): 

Year Ended December 31, 

2012 

2011 

Balance at January 1 ................................................................................................
Contributions from noncontrolling interest ................................................................
Net income (loss) ................................................................................................
Balance at December 31 ................................................................ $ 

8,274 
- 
(90) 
8,184 

$ 

$ 

$ 

- 
8,333 
(59) 
8,274 

104 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
9. 

INCOME TAXES 

Income tax expense consists of the following (in thousands): 

2012 

Year Ended December 31, 
2011 

2010 

Current income tax expense (refund): 

Federal ....................................................................... 
State ........................................................................... 
Total current income tax expense ......................... 

Deferred income tax expense: 

Federal ....................................................................... 
State ........................................................................... 
Total deferred income tax expense ....................... 
Total .............................................................. 

$ 

$ 

- 
(669) 
(669) 

233,468 
15,113 
248,581 
247,912 

$ 

$ 

107 
3,746 
3,853 

272,653 
12,185 
284,838 
288,691 

$ 

$ 

892 
4,087 
4,979 

188,386 
11,425 
199,811 
204,790 

Income tax expense differed from amounts that would result from applying the U.S. statutory income tax 
rate (35%) to income before income taxes as follows (in thousands): 

U.S. statutory income tax expense .................................. 
State income taxes, net of federal benefit ....................... 
Statutory depletion .......................................................... 
Enacted changes in state tax laws ................................... 
Permanent items .............................................................. 
Other ............................................................................... 
Total ....................................................................... 

$ 

$ 

$ 

Year Ended December 31, 
2011 
273,112 
16,602 
(697) 
(1,842) 
1,420 
96 
288,691 

$ 

2012 
231,704 
14,444 
(620) 
- 
1,524 
860 
247,912 

$ 

$ 

2010 
189,505 
14,051 
(632) 
- 
1,071 
795 
204,790 

The  principal  components  of  the  Company’s  deferred  income  tax  assets  and  liabilities  at  December 31, 
2012 and 2011 were as follows (in thousands): 

Year Ended December 31, 
2011 
2012 

Deferred income tax assets: 

$ 

Net operating loss carryforward .......................................................... 
Derivative instruments ......................................................................... 
Production Participation Plan liability ................................................. 
Tax sharing liability ............................................................................. 
Asset retirement obligations ................................................................ 
Underwriter fees .................................................................................. 
Restricted stock compensation ............................................................ 
Enhanced oil recovery credit carryforwards ........................................ 
Alternative minimum tax credit carryforwards ................................... 
Foreign tax credit carryforwards ......................................................... 
Other .................................................................................................... 
Total deferred income tax assets .................................................. 
Less valuation allowances .................................................................. 
Net deferred income tax assets ..................................................... 

520,980 
19,957 
34,865 
8,312 
19,759 
12,677 
9,852 
7,946 
11,391 
1,230 
1,508 
648,477 
(1,230) 
647,247 

$ 

172,531 
60,938 
29,764 
9,062 
17,079 
4,348 
5,431 
7,946 
11,391 
1,230 
650 
320,370 
(1,230) 
319,140 

Deferred income tax liabilities: 

Oil and gas properties .......................................................................... 
Trust distributions ................................................................................ 
Total deferred income tax liabilities ............................................ 
Total net deferred income tax liabilities ............................................. 

1,555,142 
165,180 
1,720,322 
1,073,075 

$ 

1,108,276 
36,091 
1,144,367 
825,227 

$ 

105 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
As of December 31, 2012, we had federal net operating loss (“NOL”) carryforwards of $1,470.3 million.   
Of this amount, $46.0 million in NOL carryforwards relate to tax deductions for stock compensation that 
exceed stock compensation costs recognized for financial statement purposes.  The benefit of these excess 
tax deductions will not be recognized as an NOL in the Company’s financial statements, until the related 
deductions  reduce  taxes  payable  and  are  thereby  realized.    The  Company  also  has  various  state  net 
operating loss carryforwards.  The determination of the state net operating loss carryforwards is dependent 
upon apportionment percentages and state laws that can change from year to year and impact the amount of 
such carryforwards.  If unutilized, the federal net operating loss will expire between 2027 and 2032, and the 
state net operating losses will expire between 2013 and 2032.  

EOR credits are a credit against federal income taxes for certain costs related to extracting high-cost oil, 
utilizing certain prescribed “enhanced” tertiary recovery methods.  As of December 31, 2012, the Company 
had recognized aggregate enhanced oil recovery credits of $7.9 million that are available to offset regular 
federal income taxes in the future.  These credits can be carried forward and will expire between 2023 and 
2025.  Federal EOR credits are subject to phase-out according to the level of average domestic crude oil 
prices.    The  EOR  credit  has  been  phased-out  since  2006,  but  this  phase-out  affects  only  the  periods  for 
which EOR credits can be captured and not the periods in which such credits can be utilized. 

The  Company  is  subject  to  the  alternative  minimum  tax  (“AMT”)  principally  due  to  its  significant 
intangible  drilling  cost  deductions.    As  of  December  31,  2012,  the  Company  had  AMT  credits  totaling 
$11.4 million that are available to offset future regular federal income taxes.  These credits do not expire 
and can be carried forward indefinitely. 

At  December  31,  2012,  the  Company’s  foreign  tax  credit  carryforwards  totaled  $1.2  million,  which  will 
expire  between  2014  and  2016.    As  of  December  31,  2012,  a  valuation  allowance  of  $1.2  million  was 
established  in  full  for  the  foreign  tax  credit  carryforwards  because  the  Company  determined  that  it  was 
more likely than not that the benefit from these deferred tax assets will not be realized due to the divestiture 
of all foreign operations. 

Net  deferred  income  tax  liabilities  were  classified  in  the  consolidated  balance  sheets  as  follows  (in 
thousands): 

Year Ended December 31, 
2011 
2012 

Assets: 

Current deferred income taxes ............................................................ 

$ 

- 

Liabilities: 

Current deferred income taxes ............................................................ 
Non-current deferred income taxes ..................................................... 
Net deferred income tax liabilities ............................................... 

9,394 
1,063,681 
1,073,075 

$ 

$ 

$ 

- 

1,584 
823,643 
825,227 

The following table summarizes the activity related to the Company's liability for unrecognized tax benefits 
(in thousands): 

Beginning balance at January 1 ...................................... 
Decrease related to tax position taken in a prior period .. 
Ending balance at December 31...................................... 

$ 

$ 

2012 

Year Ended December 31, 
2011 

2010 

299 
(129) 
170 

$ 

$ 

299 
- 
299 

$ 

$ 

299 
- 
299 

Included in the unrecognized tax benefit balance at December 31, 2012, are $0.2 million of tax positions, 
the allowance of which would positively affect the annual effective income tax rate.  For the year ended 

106 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
December 31, 2012, the Company did not recognize any interest or penalties with respect to unrecognized 
tax benefits, nor did the Company have any such interest or penalties previously accrued.  The Company 
believes that it is reasonably possible that no increases or decreases to unrecognized tax benefits will occur 
in the next twelve months. 

The  Company  files  income  tax  returns  in  the  U.S.  Federal  jurisdiction,  in  various  states,  and  previously 
filed  in  two  foreign  jurisdictions  each  with  varying  statutes  of  limitations.    The  2009  through  2012  tax 
years generally remain subject to examination by federal and state tax authorities.  The foreign jurisdictions 
generally remain subject to examination by their respective authorities for the 2006 period. 

10. 

EARNINGS PER SHARE 

The reconciliations between basic and diluted earnings per share are as follows (in thousands, except per 
share data): 

Basic Earnings Per Share (1) 

Numerator: 

2012 

Year Ended December 31, 
2011 

2010 

Net income (loss) available to shareholders ............................
Preferred stock dividends (2) ....................................................
Net income (loss) available to common 

$ 

414,189 
(1,077) 

shareholders, basic ................................................................

$ 

413,112 

$ 

491,687 
(1,077) 

$ 

336,653 
(63,069) 

$ 

490,610 

$ 

273,584 

Denominator: 

Weighted average shares outstanding, basic ...........................

117,601 

117,345 

106,338 

Diluted Earnings Per Share(1) 

Numerator: 

Net income (loss) available to common 

shareholders, basic ................................................................
Preferred stock dividends ........................................................
Adjusted net income (loss) available to 

$ 

413,112 
1,077 

$ 

490,610 
1,077 

$ 

273,584 
1,078 

common shareholders, diluted ................................ $ 

414,189 

$ 

491,687 

$ 

274,662 

Denominator: 

Weighted average shares outstanding, basic ...........................
Restricted stock and stock options ................................ 
Convertible perpetual preferred stock ................................
Weighted average shares outstanding, diluted ........................

117,601 
633 
794 
119,028 

117,345 
529 
794 
118,668 

106,338 
714 
794 
107,846 

Earnings (loss) per common share, basic ................................$ 
Earnings (loss) per common share, diluted ................................$ 
_____________________ 
(1)  All share and per share amounts have been retroactively restated for the 2010 period to reflect the Company’s two-

2.57 
2.55 

3.51 
3.48 

4.18 
4.14 

$ 
$ 

$ 
$ 

for-one stock split in February 2011, as described in Note 8 to these consolidated financial statements. 

(2)  For the year ended December 31, 2010, amount includes a decrease of $0.9 million in preferred stock dividends for 
preferred  stock  dividends  accumulated.    There  were  no  accumulated  dividend  adjustments  for  the  years  ended 
December 31, 2012 and 2011. 

For the year ended December 31, 2012, the diluted earnings per share calculation excludes (i) the dilutive 
effect of 141,807 incremental shares of restricted stock that did not meet its market-based vesting criteria 
as of December 31, 2012, and (ii) the anti-dilutive effect of 7,720 common shares for stock options that 
were out-of-the-money.  For the year ended December 31, 2011, the diluted earnings per share calculation 
excludes  the  dilutive  effect  of  (i)  113,228  incremental  shares  of  restricted  stock  that  did  not  meet  its 
market-based vesting criteria as of December 31, 2011, and (ii) 2,285 common shares for stock options that 

107 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
were out-of-the-money.  For the year ended December 31, 2010, the diluted earnings per share calculation 
excludes the effect of 10,713,390 incremental common shares (which were issuable upon the conversion of 
perpetual preferred stock as of a January 1, 2010 assumed conversion date) because their effect was anti-
dilutive.   

11. 

RELATED PARTY TRANSACTIONS  

Whiting  USA  Trust  I—As  a  result  of  Whiting’s  retained  ownership  of  15.8%,  or  2,186,389  units  in 
Whiting  USA  Trust  I,  it  is  a  related  party  of  the  Company.   The  following  table  summarizes  the  related 
party  receivable  and  payable  balances  between  the  Company  and  Trust  I  as  of  December 31,  2012  and 
2011 (in thousands): 

Assets 
Unit distributions due from Trust I (1) ........................................................ 
Total ................................................................................................. 

Liabilities 
Unit distributions payable to Trust I (2) ...................................................... 
Current portion of derivative liability due to Trust I .................................. 
Total ................................................................................................. 

$ 
$ 

$ 

$ 

December 31, 

2012 

2011 

929 
929 

5,731 
- 
5,731 

$ 
$ 

$ 

$ 

1,127 
1,127 

7,146 
4,336 
11,482 

_____________________ 
(1)  This  amount  represents  Whiting’s  15.8%  interest  in  the  net  proceeds  due  from  Trust  I  and  is  included  within 

accounts receivable trade, net in the Company’s consolidated balance sheets. 

(2)  This amount represents net proceeds from Trust I’s underlying properties as well as realized cash settlements on 
Trust I derivatives, that the Company has received between the last Trust I distribution date and December 31, 
2012,  but  which  the  Company  has  not  yet  distributed  to  Trust  I  as  of  December  31,  2012.    Due  to  ongoing 
processing of Trust I revenues and expenses after December 31, 2012, the amount of Whiting’s next scheduled 
distribution to Trust I, and the related distribution by Trust I to its unitholders, will differ from this amount.  This 
amount is included within accounts payable trade in the Company’s consolidated balance sheet. 

For the year ended December 31, 2012, Whiting paid $37.6 million, net of state tax withholdings, in unit 
distributions to Trust I and received $5.8 million in distributions back from Trust I pursuant to its retained 
ownership in 2,186,389 Trust I units. 

Tax  Sharing  Liability—Prior  to  Whiting’s  initial  public  offering  in  November  2003,  it  was  a  wholly-
owned  indirect  subsidiary  of  Alliant  Energy  Corporation  (“Alliant  Energy”),  and  when  the  transactions 
discussed below were entered into, Alliant Energy was a related party of the Company.  As of December 
31, 2004 and thereafter, Alliant Energy was no longer a related party. 

In 2003, the Company entered into a Tax Separation and Indemnification Agreement with Alliant Energy, 
whereby the Company and Alliant Energy made certain tax elections with the effect that the tax bases of 
Whiting’s  assets  were  increased.  Such  additional  tax  bases  have  resulted  in  increased  income  tax 
deductions for Whiting and, accordingly, have reduced income taxes otherwise payable by Whiting.  Under 
this Tax Separation and Indemnification Agreement, the Company agreed to pay to Alliant Energy (each 
year from 2004 to 2013) 90% of the tax benefits the Company realizes annually as a result of this step-up 
in tax bases.  In 2014, Whiting will be obligated to pay Alliant the present value of 90% of the remaining 
tax benefits expected to result from its increased tax bases, assuming all such tax benefits will be realized 
in future years.   

The present value of estimated payments due Alliant Energy under this agreement have been reflected in 
the Company’s consolidated balance sheets.  The long-term portions of this tax sharing liability of $21.1 
million  and  $21.2  million as  of  December  31,  2012 and  2011,  respectively,  have  been  included in  other 
long-term liabilities, and the Company’s estimated payment of $1.5 million to be made in 2013 is reflected 

108 

 
 
 
 
 
 
 
 
 
 
 
as a current liability at December 31, 2012.  During 2012, 2011 and 2010, the Company made payments of 
$2.3  million,  $1.9  million  and  $1.6  million,  respectively,  under  this  agreement  and  recognized  interest 
expense of $2.2 million, $2.1 million and $1.5 million, respectively.   

Alliant  Energy  Guarantee—The  Company  holds  a  6%  working  interest  in  three  offshore  platforms  in 
California  and  the  related  onshore  plant  and  equipment.    Alliant  Energy  has  guaranteed  the  Company’s 
obligation in the abandonment of these assets. 

12. 

COMMITMENTS AND CONTINGENCIES 

The table  below shows  the  Company’s  minimum  future  payments  under  non-cancelable  operating  leases 
and unconditional purchase obligations as of December 31, 2012 (in thousands): 

2013 
$  5,402 
Non-cancelable leases ................................
  92,823 
Drilling rig contracts ................................
  Total ................................$  98,225 

2014 
$  6,227 
  65,899 
$  72,126 

Payments due by period 
2016 
$  5,352 
918 
$  6,270 

2017 
$  5,214 
- 
$  5,214 

2015 
$  5,831 
  27,702 
$  33,533 

Thereafter 
$  5,921 
- 
$  5,921 

Total 
$  33,947 
  187,342 
$ 221,289 

Non-cancelable  Leases—The  Company  leases  172,400  square  feet  of  administrative  office  space  in 
Denver,  Colorado  under  an  operating  lease  arrangement  expiring  in  2018,  46,300  square  feet  of  office 
space  in  Midland,  Texas  expiring  in  2020  and  20,000  square  feet  of  office  space  in  Dickinson,  North 
Dakota expiring in 2016.  In addition, the Company entered into a lease for several residential apartments 
in Watford City, North Dakota under an operating lease arrangement expiring in 2015.  Rental expense for 
2012,  2011  and  2010  amounted  to  $5.7  million,  $4.4  million  and  $3.4  million,  respectively.    Minimum 
lease payments under the terms of non-cancelable operating leases as of December 31, 2012 are shown in 
the table above. 

Drilling  Rig  Contracts—The  Company  currently  has  12  drilling  rigs  under long-term  contract,  of  which 
three drilling rigs expire in 2013, six in 2014, one in 2015 and two in 2016.  All of these rigs are operating 
in the Rocky Mountains region.  As of December 31, 2012, early termination of the remaining contracts 
would  require  termination  penalties  of  $145.1  million,  which  would  be  in  lieu  of  paying  the  remaining 
drilling  commitments  of  $187.3  million.    No  other  drilling  rigs  working  for  the  Company  are  currently 
under  long-term  contracts  or  contracts  that  cannot  be  terminated  at  the  end  of  the  well  that  is  currently 
being drilled.  During 2012, 2011 and 2010, the Company made payments of $101.1 million, $49.8 million 
and  $44.6  million,  respectively,  under  these  long-term  contracts,  which  are  initially  capitalized  as  a 
component  of  oil  and  gas  properties  and  either  depleted  in  future  periods  or  written  off  as  exploration 
expense.  Two of these drilling rigs have price adjustment clauses that are linked to changes in NYMEX 
crude oil prices, and this component of those purchase obligations is therefore variable.  Minimum drilling 
commitments under the terms of these contracts as of December 31, 2012 are shown in the table above. 

Purchase Contracts—The Company has four take-or-pay purchase agreements, two agreements expiring 
in December 2014, one agreement expiring in December 2017 and one agreement expiring in December 
2029, whereby the Company has committed to buy certain volumes of CO2 for use in its enhanced recovery 
projects  in  the  Postle  field  in  Oklahoma  and  the  North  Ward  Estes  field  in  Texas.    The  purchase 
agreements  are  with  three  different  suppliers.    Under  the  terms  of  the  agreements,  the  Company  is 
obligated to purchase a minimum daily volume of CO2 (as calculated on an annual basis) or else pay for 
any deficiencies at the price in effect when the minimum delivery was to have occurred.  In addition, the 
Company  has  two ship-or-pay  agreements  with  two different  parties,  one expiring  in June  2013  and  one 
expiring in December 2017, whereby it has committed to transport a minimum daily volume of CO2  via 
certain pipelines or else pay for any deficiencies at a price stipulated in the contract.   

109 

 
 
 
 
 
 
 
 
The CO2 volumes planned for use in the Company’s enhanced recovery projects in the Postle and North 
Ward  Estes  fields  currently  exceed  the  minimum  daily  volumes  specified  in  all  of  these  agreements.  
Therefore,  the  Company  expects  to  avoid  any  payments  for  deficiencies.    During  2012,  2011  and  2010, 
purchases  and  transportation  of  CO2  amounted  to  $86.0  million,  $69.8  million  and  $56.2  million, 
respectively.  Although minimum daily quantities are specified in the agreements, the actual CO2 volumes 
purchased or transported and their corresponding unit prices are variable over the term of the contracts.  As 
a  result,  the  future  minimum  payments  for  each  of  the  five  succeeding  fiscal  years  are  not  fixed  and 
determinable and are not therefore included in the table above.  As of December 31, 2012, the Company 
estimated  future  commitments  under  these  purchase  agreements  to  approximate  $712.3  million  through 
2029.   

Litigation—The  Company  is  subject  to  litigation,  claims  and  governmental  and  regulatory  proceedings 
arising in the ordinary course of business.  It is the opinion of the Company’s management that all claims 
and litigation involving the Company are not likely to have a material effect on its consolidated financial 
position, cash flows or results of operations. 

13. 

SUBSEQUENT EVENTS 

On  February  15,  2013,  the  Company  declared  a  dividend  of  $1.5625  per  share  on  its  6.25%  convertible 
perpetual preferred stock.  The total dividend amounting to $0.3 million is payable on March 15, 2013 to 
holders of record on March 1, 2013. 

14. 

OIL AND GAS ACTIVITIES 

The  Company’s  oil  and  gas  activities  for  2012,  2011  and  2010  were  entirely  within  the  United  States.  
Costs incurred in oil and gas producing activities were as follows (in thousands): 

Development(1) ................................................................ 
Proved property acquisition ............................................ 
Unproved property acquisition........................................ 
Exploration...................................................................... 
Total ......................................................................... 

2012 
$  1,667,182 
19,785 
119,175 
436,084 
$  2,242,226 

Year Ended December 31, 
2011 
$  1,245,150 
4,324 
191,482 
400,823 
$  1,841,779 

$ 

2010 
723,687 
22,763 
155,472 
114,012 
$  1,015,934 

_____________________ 
(1)  During 2012, 2011 and 2010, non-cash additions to oil and gas properties of $36.3 million, $4.9 million and $3.5 
million, respectively, which relate to estimated costs of the future plugging and abandonment of the Company’s 
oil and gas wells, are included in development costs in the table above. 

Net  capitalized  costs  related  to  the  Company’s  oil  and  gas  producing  activities  were  as  follows  (in 
thousands): 

Year Ended December 31, 
2011 
2012 
7,221,550 
8,849,515 
354,774 
362,483 
(2,066,830) 
(2,564,081) 
6,647,917 
5,509,494 

$ 

$ 

Proved oil and gas properties ..................................................................... 
Unproved oil and gas properties ................................................................ 
Accumulated depreciation, depletion and amortization ............................. 
Oil and gas properties, net .................................................................. 

$ 

$ 

110 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Exploratory well costs that are incurred and expensed in the same annual period have not been included in 
the table below.  The net changes in capitalized exploratory well costs were as follows (in thousands): 

Beginning balance at January 1 ........................................
Additions to capitalized exploratory well costs 

2012 

Year Ended December 31, 
2011 

2010 

$ 

90,519 

$ 

4,434 

$ 

- 

pending the determination of proved reserves ...............

384,223 

354,962 

Reclassifications to wells, facilities and equipment 

based on the determination of proved reserves .............
Capitalized exploratory well costs charged to expense .....
Ending balance at December 31 ........................................

(358,625) 
(7,256) 
108,861 

$ 

(267,847) 
(1,030) 
90,519 

$ 

$ 

81,167 

(76,733) 
- 
4,434 

At December 31, 2012, the Company had $51.2 million of capitalized exploratory well costs related to four 
wells that were in progress for a period of greater than one year after the completion of drilling.  These four 
wells are located in the Company’s Permian Basin, Rocky Mountains and Mid-Continent regions.  Of the 
$51.2 million in costs capitalized for these exploratory wells, $21.8 million and $29.4 million were incurred 
in 2012 and 2011, respectively.  With respect to the two wells in the Permian Basin region and one well in 
the Rocky Mountains region, the Company is continuing to incur costs to assess these wells’ reserves and 
their related development potential.  As for the one remaining well located in the Mid-Continent region, the 
Company has found economic quantities of oil and gas reserves.  However, the permitting of a gas line to 
bring this well’s production to market is still currently in progress. 

15. 

DISCLOSURES ABOUT OIL AND GAS PRODUCING ACTIVITIES (UNAUDITED) 

For  all  years  presented  our  independent  petroleum  engineers  independently  estimated  all  of  the  proved, 
probable  and  possible  reserve  quantities  included  in  this  annual  report.    In  connection  with  our  external 
petroleum engineers performing their independent reserve estimations, we furnish them with the following 
information that they review: (1) technical support data, (2) technical analysis of geologic and engineering 
support  information,  (3)  economic  and  production  data,  and  (4)  our  well  ownership  interests.    The 
independent petroleum engineers, Cawley, Gillespie & Associates, Inc., evaluated 100% of our estimated 
proved reserve quantities and their related pre-tax future net cash flows as of December 31, 2012.  Proved 
reserve  estimates  included  herein  conform  to  the  definitions  prescribed  by  the  U.S.  Securities  and 
Exchange Commission.  Estimates of proved reserves are inherently imprecise and are continually subject 
to revision based on production history, results of additional exploration and development, price changes 
and other factors. 

As of December 31, 2012, all of the Company’s oil and gas reserves are attributable to properties within the 
United States.  A summary of the Company’s changes in quantities of proved oil and gas reserves for the 
years ended December 31, 2010, 2011 and 2012 are as follows: 

111 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Oil 
(MBbl) 

NGLs 
 (MBbl) 

Natural Gas 
(MMcf) 

Total 
(MBOE) 

Balance—January 1, 2010 ................................ 

Extensions and discoveries ................................
Sales of minerals in place ................................
Purchases of minerals in place ................................
Production................................................................
Revisions to previous estimates ................................

Balance—December 31, 2010 ................................

Extensions and discoveries ................................
Sales of minerals in place ................................
Purchases of minerals in place ................................
Production................................................................
Revisions to previous estimates ................................

Balance—December 31, 2011 ................................

Extensions and discoveries ................................
Sales of minerals in place ................................
Production................................................................
Revisions to previous estimates ................................

Balance—December 31, 2012 ................................

193,293 
26,735 
(221) 
466 
(17,466) 
21,389 
224,196 
39,660 
(579) 
114 
(18,299) 
15,052 
260,144 
68,134 
(7,960) 
(23,139) 
4,106 
301,285 

Proved developed reserves: 

December 31, 2009 ................................
December 31, 2010 ................................
December 31, 2011 ................................
December 31, 2012 ................................

Proved undeveloped reserves: 

December 31, 2009 ................................
December 31, 2010 ................................
December 31, 2011 ................................
December 31, 2012 ................................

129,104 
160,088 
180,975 
190,845 

64,189 
64,108 
79,169 
110,440 

30,503 
2,699 
(4) 
39 
(1,565) 
(1,590) 
30,082 
5,024 
(632) 
58 
(2,074) 
5,151 
37,609 
6,526 
(320) 
(2,766) 
(951) 
40,098 

15,709 
18,321 
22,109 
24,204 

14,794 
11,761 
15,500 
15,894 

307,393 
23,135 
(500) 
1,526 
(27,392) 
(618) 
303,544 
23,211 
(9,759) 
1,639 
(26,443) 
(7,217) 
284,975 
40,915 
(13,987) 
(25,827) 
(61,812) 
224,264 

178,782 
220,530 
211,297 
160,893 

128,611 
83,014 
73,678 
63,371 

275,029 
33,290 
(308) 
759 
(23,596) 
19,695 
304,869 
48,552 
(2,837) 
445 
(24,780) 
19,000 
345,249 
81,479 
(10,611) 
(30,209) 
(7,148) 
378,760 

174,610 
215,164 
238,300 
241,864 

100,419 
89,705 
106,949 
136,896 

Notable changes in proved reserves for the year ended December 31, 2012 included: 

•  Revisions  to  previous  estimates.    In  2012,  revisions  to  previous  estimates  decreased  proved 
developed and undeveloped reserves by a net amount of 7.1 MMBOE.  Included in these revisions 
were (i) 11.8 MMBOE of downward adjustments caused by lower crude oil and natural gas prices 
incorporated  into  the  Company’s  reserve  estimates  at  December  31,  2012  as  compared  to 
December  31,  2011,  and  (ii)  4.7  MMBOE  of  net  upward  adjustments  attributable  to  reservoir 
analysis and well performance.   

•  Extensions  and  discoveries.    In  2012,  total  extensions  and  discoveries  of  81.5  MMBOE  were 
primarily attributable to successful drilling in the Sanish field, Redtail prospect, Missouri Breaks 
prospect and the Pronghorn area.  The new producing wells in these fields and their related proved 
undeveloped locations added during the year increased the Company’s proved reserves. 

Notable changes in proved reserves for the year ended December 31, 2011 included: 

•  Revisions  to  previous  estimates.    In  2011,  revisions  to  previous  estimates  increased  proved 
developed and undeveloped reserves by a net amount of 19.0 MMBOE.  Included in these revisions 
were (i) 4.7 MMBOE of upward adjustments caused by higher crude oil prices incorporated into 
the Company’s reserve estimates at December 31, 2011 as compared to December 31, 2010, and 

112 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
(ii)  14.3  MMBOE  of  net  upward  adjustments  attributable  to  reservoir  analysis  and  well 
performance.  The oil component of the net 14.3 MMBOE revision consisted of a 10.9 MMBOE 
increase that was primarily related to the Postle and North Ward Estes fields, as discussed above, 
where  the  performance  of  the  CO2  injection  EOR  projects  supported  an  increase  in  the  proved 
reserve  assignments.    The  NGL  component  of  the  net  14.3  MMBOE  revision  consisted  of  a  4.8 
MMBOE increase due to the performance of the Postle and North Ward Estes fields and various 
properties in the Northern Rockies area, primarily in the Sanish field.  The gas component of the 
net 14.3 MMBOE revision consisted of a 1.4 MMBOE decrease that was primarily related to the 
Flat Rock field where proved reserve assignments were reduced due to the production performance 
of two recently completed wells. 

•  Extensions  and  discoveries.    In  2011,  total  extensions  and  discoveries  of  48.6  MMBOE  were 
primarily attributable to successful drilling in the Sanish field and Pronghorn area of the Lewis & 
Clark  prospect.    The  new  producing  wells  in  these  fields  and  their  related  proved  undeveloped 
locations added during the year increased the Company’s proved reserves in these areas. 

Notable changes in proved reserves for the year ended December 31, 2010 included: 

•  Revisions  to  previous  estimates.    In  2010,  revisions  to  previous  estimates  increased  proved 
developed and undeveloped reserves by a net amount of 19.7 MMBOE.  Included in these revisions 
were  (i)  15.4  MMBOE  of upward  adjustments  caused  by  higher  crude  oil  and natural  gas  prices 
incorporated  into  the  Company’s  reserve  estimates  at  December  31,  2010  as  compared  to 
December  31,  2009,  and  (ii)  4.3  MMBOE  of  net  upward  adjustments  attributable  to  reservoir 
analysis and well performance.  The oil component of the net 4.3 MMBOE revision consisted of a 
10.1  MMBOE  increase that  was  primarily  related to  the  Sanish field,  where  reserve  assignments 
for  proved  developed  producing  as  well  as  proved  undeveloped  well  locations  were  adjusted 
upward by 5.6 MMBOE to reflect the current performance of producing wells, and the Postle and 
North  Ward  Estes  fields,  where  recent  performance  of  CO2  injection  at  those  EOR  projects 
positively impacted their reserve assignments by 4.7 MMBOE.  The NGL component of the net 4.3 
MMBOE  revision  consisted  of  a  decrease  of  2.7  MMBOE  primarily  related  to  lower  estimated 
NGL volumes at the North Ward Estes field.  The gas component of the net 4.3 MMBOE revision 
consisted of a 3.1 MMBOE decrease that was primarily related to the Beall East field, where three 
proved  undeveloped  locations  were  removed  from  our  proved  reserve  estimate  since  those  wells 
are no longer planned to be drilled due to low gas prices. 

•  Extensions  and  discoveries.    In  2010,  total  extensions  and  discoveries  of  33.3  MMBOE  were 
primarily attributable to successful drilling in the Sanish field and related proved undeveloped well 
locations  added  during  the  year,  which  in  turn  increased  the  Company’s  proved  reserves  in  the 
Sanish area. 

As discussed in Deferred Compensation within these footnotes to the consolidated financial statements, all 
of  the  Company’s  employees  participate  in  the  Company’s  Production  Participation  Plan  (“Plan”).    The 
reserve disclosures above include oil and natural gas reserve volumes that have been allocated to the Plan.  
Once allocated to Plan participants, the interests are fixed.  Allocations prior to 1995 consisted of 2%–3% 
overriding royalty interest, while allocations since 1995 have been 2%–5% of oil and gas sales less lease 
operating expenses and production taxes from the production allocated to the Plan. 

The standardized measure of discounted future net cash flows relating to proved oil and gas reserves and 
the changes in standardized measure of discounted future net cash flows relating to proved oil and natural 
gas  reserves  were  prepared  in  accordance  with  the  provisions  of  FASB  ASC  Topic  932,  Extractive 
Activities—Oil and Gas.  Future cash inflows as of December 31, 2012, 2011 and 2010 were computed by 
applying average fiscal-year prices (calculated as the unweighted arithmetic average of the first-day-of-the-
month  price  for  each  month  within  the  12-month  period  ended  December  31,  2012,  2011  and  2010, 

113 

 
 
respectively)  to  estimated future  production.    Future production  and  development  costs  are  computed  by 
estimating  the  expenditures  to  be  incurred  in  developing  and  producing  the  proved  oil  and  natural  gas 
reserves  at  year  end,  based  on  year-end  costs  and  assuming  the  continuation  of  existing  economic 
conditions. 

Future income tax expenses are calculated by applying appropriate year-end tax rates to future pretax net 
cash flows relating to proved oil and natural gas reserves, less the tax basis of properties involved.  Future 
income tax expenses give effect to permanent differences, tax credits and loss carryforwards relating to the 
proved  oil  and  natural  gas  reserves.    Future  net  cash  flows  are  discounted  at  a  rate  of  10%  annually  to 
derive the standardized measure of discounted future net cash flows.  This calculation does not necessarily 
result in an estimate of the fair value of the Company’s oil and gas properties. 

The  standardized  measure  of  discounted  future  net  cash  flows  relating  to  proved  oil  and  natural  gas 
reserves is as follows (in thousands): 

Future cash flows............................................................ 
Future production costs .................................................. 
Future development costs ............................................... 
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 .......................................................................... 

2012 
$  29,308,752 
  (11,397,332) 
(3,181,618) 
(4,278,529) 
  10,451,273 

December 31, 
2011 
$  26,815,086 
(8,908,131) 
(1,982,813) 
(4,875,973) 
  11,048,169 

2010 
$  19,314,032 
(7,705,465) 
(1,491,937) 
(2,890,668) 
7,225,962 

(5,044,240) 

(5,775,677) 

(3,558,356) 

$  5,407,033 

$  5,272,492 

$  3,667,606 

Future  cash  flows  as  shown  above  are  reported  without  consideration  for  the  effects  of  open  hedge 
contracts at each period end.  If the effects of hedging transactions were included in the computation, then 
undiscounted  future  cash  inflows  would  have  decreased  by  $20.2  million  in  2012,  decreased  by  $50.7 
million in 2011 and decreased by $12.6 million in 2010. 

The  changes  in  the  standardized  measure  of  discounted  future  net  cash  flows  relating  to  proved  oil  and 
natural gas reserves are as follows (in thousands): 

Beginning of year ........................................................... 
Sale of oil and gas produced, net of production costs .... 
Sales of minerals in place ............................................... 
Net changes in prices and production costs .................... 
Extensions, discoveries and improved recoveries .......... 
Previously estimated development costs incurred 

during the period ......................................................... 
Changes in estimated future development costs ............. 
Purchases of mineral in place ......................................... 
Revisions of previous quantity estimates ....................... 
Net change in income taxes ............................................ 
Accretion of discount ..................................................... 
End of year ..................................................................... 

2012 
$  5,272,492 
(1,589,665) 
(438,614) 
(1,061,495) 
3,708,780 

526,982 
(1,498,592) 
- 
(295,432) 
255,328 
527,249 
$  5,407,033 

December 31, 
2011 
$  3,667,606 
(1,415,469) 
(67,600) 
2,246,014 
1,156,740 

408,079 
(797,542) 
10,604 
452,668 
(755,369) 
366,761 
$  5,272,492 

2010 
$  2,343,542 
(1,103,060) 
(5,927) 
1,881,636 
639,924 

405,499 
(434,549) 
14,597 
378,552 
(686,962) 
234,354 
$  3,667,606 

114 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Future  net  revenues included  in the  standardized  measure of  discounted future  net  cash flows  relating  to 
proved  oil  and  natural  gas  reserves  incorporate  calculated  weighted  average  sales  prices  (inclusive  of 
adjustments for quality and location) in effect at December 31, 2012, 2011 and 2010 as follows: 

Oil (per Bbl) ......................................................................
NGLs (per Bbl) ................................................................
Natural Gas (per Mcf) .......................................................

2012 
$  87.15 
$  58.15 
3.21 
$ 

2011 
$  89.18 
$  62.93 
4.39 
$ 

2010 
$  73.14 
$  49.35 
4.72 
$ 

16. 

QUARTERLY FINANCIAL DATA (UNAUDITED) 

The  following  is  a  summary  of  the  unaudited  quarterly  financial  data  for  the  years  ended  December 31, 
2012 and 2011 (in thousands, except per share data): 

Three Months Ended 

Year ended December 31, 2012: 
Oil, NGL and natural gas sales ...................  $ 
Operating profit (1) ......................................  $ 
Net income .................................................  $ 
Basic earnings per share .............................  $ 
Diluted earnings per share ..........................  $ 

March 31, 
2012 
558,697 
263,176 
98,446 
0.84 
0.83 

June 30, 
2012 
492,756 
201,900 
150,851 
1.28 
1.27 

$ 
$ 
$ 
$ 
$ 

September 30, 
2012 
521,195 
204,230 
83,113 
0.70 
0.70 

$ 
$ 
$ 
$ 
$ 

December 31, 
2012 
565,066 
235,635 
81,689 
0.69 
0.69 

$ 
$ 
$ 
$ 
$ 

Three Months Ended 

Year ended December 31, 2011: 
Oil, NGL and natural gas sales ...................  $ 
Operating profit (1) ......................................  $ 
Net income .................................................  $ 
Basic earnings per share .............................  $ 
Diluted earnings per share ..........................  $ 
_____________________ 
(1)  Oil,  NGL  and  natural  gas  sales  less  lease  operating  expense,  production  taxes  and  depreciation,  depletion  and 

$ 
$ 
$ 
$ 
$ 

$ 
$ 
$ 
$ 
$ 

$ 
$ 
$ 
$ 
$ 

September 30, 
2011 
468,573 
233,543 
206,235 
1.75 
1.74 

December 31, 
2011 
492,025 
243,362 
62,830 
0.54 
0.53 

March 31, 
2011 
425,683 
214,789 
19,414 
0.16 
0.16 

June 30, 
2011 
473,865 
255,572 
203,149 
1.73 
1.71 

amortization. 

****** 

115 

 
 
 
 
 
 
 
 
 
 
 
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.   In  accordance  with  Rule  13a-15(b)  of the  Securities 
Exchange Act of 1934 (the “Exchange Act”), our management evaluated, with the participation of our Chairman 
and Chief Executive Officer and our Chief Financial Officer, the effectiveness of the design and operation of our 
disclosure controls and procedures (as defined in Rule 13a-15(e) under the Exchange Act) as of the end of the year 
ended December 31, 2012.  Based upon their evaluation of these disclosures controls and procedures, the Chairman 
and Chief Executive Officer and the Chief Financial Officer concluded that the disclosure controls and procedures 
were  effective  as  of  the  end  of  the  year  ended  December  31,  2012  to  ensure  that  information  required  to  be 
disclosed by us in the reports that we file or submit under the Exchange Act is recorded, processed, summarized 
and reported within the time periods specified in the rules and forms of the Securities and Exchange Commission, 
and to ensure that information required to be disclosed by us in the reports we file or submit under the Exchange 
Act is accumulated and communicated to our management, including our principal executive and principal financial 
officers, as appropriate, to allow timely decisions regarding required disclosure.  

Management’s  Annual  Report  on  Internal  Control  Over  Financial  Reporting.    The  management  of 
Whiting Petroleum Corporation and subsidiaries is responsible for establishing and maintaining adequate internal 
control  over  financial  reporting,  as  such  term  is  defined  in  Rules  13a-15(f)  and  15d-15(f)  under  the  Securities 
Exchange Act of 1934.  Our internal control over financial reporting is 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. 

Because of the inherent limitations of internal control over financial reporting, misstatements may not be 
prevented  or  detected  on  a  timely  basis.    Also,  projections  of  any  evaluation  of  the  effectiveness  of  the  internal 
control over financial reporting to future periods are subject to the risk that the controls may become inadequate 
because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate. 

Our  management  assessed  the  effectiveness  of  our  internal  control  over  financial  reporting  as  of 
December 31, 2012 using the criteria set forth in Internal Control - Integrated Framework issued by the Committee 
of Sponsoring Organizations of the Treadway Commission.  Based on this assessment, our management believes 
that, as of December 31, 2012, our internal control over financial reporting was effective based on those criteria. 

The effectiveness of our internal control over financial reporting as of December 31, 2012 has been audited 
by  Deloitte  &  Touche  LLP,  an  independent  registered  public  accounting  firm,  as  stated  in  their  report  which  is 
included herein on the following page. 

Changes in internal control over financial reporting.  There was no change in our internal control over 
financial  reporting  that  occurred  during  the  quarter  ended  December  31,  2012  that  has  materially  affected,  or  is 
reasonably likely to materially affect, our internal control over financial reporting. 

116 

 
 
 
 
REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM 

To the Board of Directors and Stockholders of 
Whiting Petroleum Corporation 
Denver, Colorado 

We  have  audited  the internal control  over financial reporting  of  Whiting  Petroleum  Corporation  and  subsidiaries 
(the  "Company")  as  of  December  31,  2012,  based  on  criteria  established  in  Internal  Control  —  Integrated 
Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission.  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 
Annual Report on Internal Control Over Financial Reporting.  Our responsibility is to express an opinion on the 
Company's internal control over financial reporting based on our audit. 

We  conducted  our  audit  in  accordance  with  the  standards  of  the  Public  Company  Accounting  Oversight  Board 
(United States).  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 
included obtaining an understanding of internal control over financial reporting, assessing the risk that a material 
weakness  exists,  testing  and  evaluating  the  design  and  operating  effectiveness  of  internal  control  based  on  the 
assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe 
that our audit provides a reasonable basis for our opinion. 

A  company's  internal  control  over  financial  reporting  is  a  process  designed  by,  or  under  the  supervision  of,  the 
company's principal executive and principal financial officers, or persons performing similar functions, and effected 
by the company's board of directors, management, and other personnel 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 the inherent limitations of internal control over financial reporting, including the possibility of collusion 
or improper management override of controls, material misstatements due to error or fraud may not be prevented or 
detected  on  a  timely  basis.    Also,  projections  of  any  evaluation  of  the  effectiveness  of  the  internal  control  over 
financial  reporting  to  future  periods  are  subject  to  the  risk  that  the  controls  may  become  inadequate  because  of 
changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate. 

In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting 
as of December 31, 2012, based on the criteria established in Internal Control — Integrated Framework issued by 
the Committee of Sponsoring Organizations of the Treadway Commission.  

117 

 
 
 
 
 
 
 
 
 
 
We  have  also  audited,  in  accordance  with  the  standards  of  the  Public  Company  Accounting  Oversight  Board 
(United States), the consolidated financial statements and financial statement schedule as of and for the year ended 
December 31, 2012 of the Company and our report dated February 28, 2013 expressed an unqualified opinion on 
those financial statements and financial statement schedule. 

/s/ DELOITTE & TOUCHE LLP 

Denver, Colorado  
February 28, 2013 

Item 9B.  Other Information 

None. 

Item 10.  Directors, Executive Officers and Corporate Governance 

PART III 

The information  included under  the  captions  “Election  of  Directors,”  “Board  of  Directors  and  Corporate 
Governance” and “Section 16(a) Beneficial Ownership Reporting Compliance” in our definitive Proxy Statement 
for  Whiting  Petroleum  Corporation’s  2013  Annual  Meeting  of  Stockholders  (the  “Proxy  Statement”)  is  hereby 
incorporated herein by reference.  Information with respect to our executive officers appears in Part I of this Annual 
Report on Form 10-K. 

We have adopted the Whiting Petroleum Corporation Code of Business Conduct and Ethics that applies to 
our directors, our Chairman and Chief Executive Officer, our Chief Financial Officer, our Controller and Treasurer 
and  other  persons  performing  similar  functions.    We  have  posted  a  copy  of  the  Whiting  Petroleum  Corporation 
Code of Business Conduct and Ethics on our website at www.whiting.com.  The Whiting Petroleum Corporation 
Code of Business Conduct and Ethics is also available in print to any stockholder who requests it in writing from 
the Corporate Secretary of Whiting Petroleum Corporation.  We intend to satisfy the disclosure requirements under 
Item 5.05  of  Form 8-K  regarding  amendments  to,  or  waivers  from,  the  Whiting  Petroleum  Corporation  Code  of 
Business Conduct and Ethics by posting such information on our website at www.whiting.com. 

We are not including the information contained on our website as part of, or incorporating it by reference 

into, this report. 

Item 11.  Executive Compensation 

The  information  required  by  this  Item  is  included  under  the  captions  “Board  of  Directors  and  Corporate 
Governance – Compensation Committee Interlocks and Insider Participation,” “Board of Directors and Corporate 
Governance  –  Director  Compensation,”  “Compensation  Discussion  and  Analysis,”  “Compensation  Committee 
Report” and “Executive Compensation” in the Proxy Statement and is hereby incorporated herein by reference. 

Item 12.  Security Ownership of Certain Beneficial Owners and Management and Related 

Stockholder Matters 

The information required by this Item with respect to security ownership of certain beneficial owners and 
management  is  included  under  the  caption  “Principal  Stockholders”  in  the  Proxy  Statement  and  is  hereby 
incorporated  by  reference.    The  following  table  sets  forth  information  with  respect  to  compensation  plans  under 
which equity securities of Whiting Petroleum Corporation are authorized for issuance as of December 31, 2012. 

118 

 
 
 
 
 
 
 
 
 
Equity Compensation Plan Information 

Plan Category 
Equity compensation plans 

approved by security holders(1) ...... 

Equity compensation plans not 

approved by security holders ......... 

Total ............................................ 

Number of securities to be 
issued upon exercise of 
outstanding options, 
warrants and rights 

Weighted-average 
exercise price of 
outstanding options, 
warrants and rights 

Number of securities remaining 
available for future issuance 
under equity compensation 
plans (excluding securities 
reflected in the first column) 

422,695 

- 

422,695 

$ 

$ 

28.79 

N/A 

28.79 

1,178,071 (2) 

-   
1,178,071 (2) 

_____________________ 
(1) 
(2)  Number of securities reduced by 422,695 stock options outstanding and 951,026 shares of restricted common stock previously issued 

Includes only the Whiting Petroleum Corporation 2003 Equity Incentive Plan. 

for which the restrictions have not lapsed. 

Item 13.  Certain Relationships, Related Transactions and Director Independence 

The  information  required  by  this  Item  is  included  under  the  caption  “Board  of  Directors  and  Corporate 
Governance  –  Transactions  with  Related  Persons”  and  “Board  of  Directors  and  Corporate  Governance  – 
Independence of Directors” in the Proxy Statement and is hereby incorporated by reference. 

Item 14.  Principal Accounting Fees and Services 

The  information  required  by  this  Item  is  included  under  the  caption  “Ratification  of  Appointment  of 

Independent Registered Public Accounting Firm” in the Proxy Statement and is hereby incorporated by reference. 

Item 15.  Exhibits, Financial Statement Schedules 

PART IV 

(a) 

1. 

Financial statements – Refer to the Index to Consolidated Financial Statements included in Item 8 
of this Form 10-K for a list of all financial statements filed as part of this report. 

2. 

Financial statement schedules – The following financial statement schedule is filed as part of this 
Annual Report on Form 10-K: 

a. 

Schedule I – Condensed Financial Information of Registrant 

All other schedules are omitted since the required information is not present, or is not present in 
amounts  sufficient  to  require  submission  of  the  schedule,  or  because  the  information  required  is 
included in the consolidated financial statements or the notes thereto. 

3. 

Exhibits – The exhibits listed in the accompanying index to exhibits are filed as part of this Annual 
Report on Form 10-K. 

(b) 

Exhibits 

The exhibits listed in the accompanying exhibit index are filed (except where otherwise indicated) as part 
of this report. 

(c) 

Financial Statement Schedules 

119 

 
 
 
 
 
 
 
 
SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT 

WHITING PETROLEUM CORPORATION 
CONDENSED FINANCIAL STATEMENTS OF THE PARENT COMPANY 

CONDENSED BALANCE SHEETS 
(In thousands) 

December 31, 

2012 

2011 

ASSETS 
Current assets ............................................................................................................................  $ 
Investment in subsidiaries ......................................................................................................... 
Intercompany receivable ........................................................................................................... 

2,390 
2,330,987 
1,748,463 
Total assets............................................................................................................................ $  4,081,840 

LIABILITIES AND EQUITY 
Current liabilities .......................................................................................................................  $ 
Long-term debt .......................................................................................................................... 
Other long-term liabilities ......................................................................................................... 
Shareholders’ equity .................................................................................................................. 

14,372 
600,000 
21,244 
3,446,224 

Total liabilities and equity ................................................................................................................

$  4,081,840 

$ 

1,986 
1,910,944 
1,733,629 
$  3,646,559 

$ 

4,482 
600,000 
21,460 
3,020,617 

$  3,646,559 

CONDENSED STATEMENTS OF OPERATIONS 
 (In thousands) 

Year Ended December 31, 
2011 

2010 

2012 

Operating expenses: 

General and administrative ..................................................................... $ 

(16,506) 

$ 

(12,024) 

$ 

(7,835) 

Interest expense ......................................................................................  
Equity in earnings of subsidiaries ...........................................................  
Income before income taxes ..........................................................................  
Income tax benefit ..................................................................................  
Net income .................................................................................................... $ 

(2,168) 
425,870 
407,196 
6,993 
414,189 

(2,066) 
500,564 
486,474 
5,213 
491,687 

(1,844) 
342,671 
332,992 
3,661 
336,653 

$ 

$ 

See notes to condensed financial statements. 

120 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
WHITING PETROLEUM CORPORATION 
CONDENSED FINANCIAL STATEMENTS OF THE PARENT COMPANY 

CONDENSED STATEMENTS OF CASH FLOWS 
(In thousands) 

Schedule I 

Cash flows provided by operating activities ................................................  $ 

Year Ended December 31, 
2011 

2010 

$ 

4,962 

$ 

1,108 

2012 
16,423 

Cash flows from investing activities: 

Investment in subsidiaries ........................................................................   

- 

- 

- 

Cash flows from financing activities: 

Intercompany receivable ..........................................................................   
Other financing activities .........................................................................   
Net cash used in financing activities .............................................   

(14,094) 
(2,329) 
(16,423) 

(3,091) 
(1,871) 
(4,962) 

507 
(1,615) 
(1,108) 

Net change in cash and cash equivalents .....................................................   
Cash and cash equivalents: 

Beginning of period ..................................................................................   
End of period ............................................................................................  $ 

- 

- 
- 

$ 

- 

- 
- 

$ 

- 

- 
- 

NONCASH INVESTING ACTIVITIES: 

Distributions from Whiting USA Trust I decreasing investment in 

subsidiaries ..........................................................................................  $ 

(5,827) 

$ 

(6,500) 

$ 

(5,937) 

See notes to condensed financial statements. 

(Continued) 

121 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
WHITING PETROLEUM CORPORATION 
CONDENSED FINANCIAL STATEMENTS OF THE PARENT COMPANY 

CONDENSED STATEMENTS OF CASH FLOWS 
(In thousands) 

Schedule I 

Year Ended December 31, 
2011 

2012 

2010 

NONCASH FINANCING ACTIVITIES: 

Issuance of 6.50% Senior Subordinated Notes due 2018 increasing 

long-term debt .....................................................................................  $ 

Issuance of 6.50% Senior Subordinated Notes due 2018 increasing 

intercompany receivable .....................................................................  $ 

Redemption of 7.25% Senior Subordinated Notes due 2012 

decreasing long-term debt ...................................................................  $ 

Redemption of 7.25% Senior Subordinated Notes due 2012 

decreasing intercompany receivable ...................................................  $ 

Redemption of 7.25% Senior Subordinated Notes due 2013 

decreasing long-term debt ...................................................................  $ 

Redemption of 7.25% Senior Subordinated Notes due 2013 

decreasing intercompany receivable ...................................................  $ 

Issuance of common stock related to the induced conversion of 

preferred stock increasing shareholders’ equity ..................................  $ 

Issuance of common stock related to the induced conversion of 

preferred stock increasing intercompany receivable ...........................  $ 

Preferred stock cancelled in connection with its induced conversion 

decreasing shareholders’ equity ..........................................................  $ 

Preferred stock cancelled in connection with its induced conversion 

decreasing intercompany receivable ...................................................  $ 
Preferred stock dividends paid decreasing shareholders’ equity ..............  $ 
Preferred stock dividends paid decreasing intercompany receivable .......  $ 
Premium on induced conversion of 6.25% convertible perpetual 

preferred stock decreasing shareholders’ equity .................................  $ 

Premium on induced conversion of 6.25% convertible perpetual 

preferred stock decreasing intercompany receivable ..........................  $ 

Distributions from Whiting USA Trust I increasing intercompany 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 
(1,077) 
(1,077) 

- 

- 

receivable ............................................................................................  $ 

5,827 

$ 

$ 

$ 

$ 

$ 

$ 

$ 

$ 

$ 

$ 
$ 
$ 

$ 

$ 

$ 

- 

- 

- 

- 

- 

- 

- 

- 

- 

- 
(1,077) 
(1,077) 

- 

- 

6,500 

$ 

$ 

$ 

$ 

$ 

$ 

$ 

$ 

$ 

$ 
$ 
$ 

$ 

$ 

$ 

350,000 

350,000 

(150,000) 

(150,000) 

(223,988) 

(223,988) 

317,406 

317,406 

(317,406) 

(317,406) 
(16,441) 
(16,441) 

(47,529) 

(47,529) 

5,937 

See notes to condensed financial statements. 

(Concluded) 

122 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
WHITING PETROLEUM CORPORATION 
NOTES TO CONDENSED FINANCIAL STATEMENTS OF THE PARENT COMPANY 

1. 

BASIS OF PRESENTATION 

Condensed Financial Statements—The condensed financial statements of Whiting Petroleum Corporation 
(the “Registrant” or “Parent Company”) do not include all of the information and notes normally included 
with  financial  statements  prepared  in  accordance  with  GAAP.    These  condensed  financial  statements, 
therefore, should be read in conjunction with the consolidated financial statements and notes thereto of the 
Registrant,  included  elsewhere  in  this  Annual  Report  on  Form  10-K.    For  purposes  of  these  condensed 
financial  statements,  the  Parent  Company’s  investments  in  wholly-owned  subsidiaries  are  accounted  for 
under the equity method.  

Restricted  Assets  of  Registrant—Except  for  limited exceptions,  including  the payment  of  interest  on the 
senior notes and the payment of dividends on the 6.25% convertible perpetual preferred stock, Whiting Oil 
and  Gas  Corporation’s (“Whiting  Oil and  Gas”)  credit  agreement restricts  the ability  of Whiting  Oil  and 
Gas  to  make  any  dividend  payments,  distributions  or  other  payments  to  the  Parent  Company.    As  of 
December  31,  2012,  total  restricted  net  assets  were  $3,477.4  million.    Accordingly,  these  condensed 
financial  statements  have  been  prepared  pursuant  to  Rule  5-04  of  Regulation  S-X  of  the  Securities 
Exchange Act of 1934, as amended. 

2. 

LONG-TERM DEBT AND OTHER LONG-TERM LIABILITIES 

The  Parent  Company’s  long-term  debt  and  other  long-term  liabilities  consisted  of  the  following  at 
December 31, 2012 and 2011 (in thousands):   

December 31, 

2012 

2011 

Long-term debt: 

6.5% Senior Subordinated Notes due 2018 .................................................$ 
7% Senior Subordinated Notes due 2014 ....................................................

Other long-term liabilities: 

Tax sharing liability .....................................................................................
Other ............................................................................................................
Total long-term debt and other long-term liabilities ...........................................$ 

350,000 
250,000 

21,074 
170 
621,244 

$ 

$ 

350,000 
250,000 

21,161 
299 
621,460 

Scheduled maturities of the Parent Company’s long-term debt and other long-term liabilities (including the 
current portions thereof) as of December 31, 2012 were as follows (in thousands): 

2013 

2014 

2015 

2016 

2017 

Thereafter 

Total 

Amounts due ...... $ 

1,452 

$  271,074 

$ 

- 

$ 

- 

$ 

- 

$ 

350,000 

$  622,526 

For further information on the Senior Subordinated Notes and tax sharing liability, refer to the Long-Term 
Debt and Related Party Transactions notes to the consolidated financial statements of the Registrant. 

3. 

SHAREHOLDERS’ EQUITY 

Common  Stock—In  May  2011,  the  Registrant’s  stockholders  approved  an  amendment  to  its  Restated 
Certificate  of  Incorporation  to  increase  the  number  of  authorized  shares  of  common  stock  from 
175,000,000 shares to 300,000,000 shares. 

123 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Stock Split.  On January 26, 2011, the Board of Directors approved a two-for-one split of the Registrant's 
shares  of  common  stock  to  be  effected  in  the  form  of  a  stock  dividend.    As  a  result  of  the  stock  split, 
stockholders of record on February 7, 2011 received one additional share of common stock for each share 
of common stock held. The additional shares of common stock were distributed on February 22, 2011.  All 
common share and per share amounts in these notes to the condensed financial statements for periods prior 
to February 2011 have been retroactively adjusted to reflect the stock split.  The common stock dividend 
resulted in the conversion price for Parent Company’s 6.25% Convertible Perpetual Preferred Stock being 
adjusted from $43.4163 to $21.70815. 

6.25%  Convertible  Perpetual  Preferred  Stock—In  June  2009,  the  Parent  Company  completed  a  public 
offering  of  6.25%  convertible  perpetual  preferred stock  (“preferred  stock”),  selling  3,450,000 shares at a 
price  of  $100.00  per  share.  As  of  December  31,  2012,  however,  only  172,391  shares  of  preferred  stock 
remained outstanding. 

Induced  Conversion  of  6.25%  Convertible  Perpetual  Preferred  Stock.    In  August  2010,  the  Registrant 
commenced  an  offer  to  exchange  up  to  3,277,500,  or  95%,  of  its  preferred  stock  for  the  following 
consideration  per  share  of  preferred  stock:  4.6066  shares  of  its  common  stock  and  a  cash  premium  of 
$14.50.    The  exchange  offer  expired  in  September  2010  and  resulted  in  the  Parent  Company  accepting 
3,277,500 shares of preferred stock in exchange for the issuance of 15,098,020 shares of common stock and 
a cash premium payment of $47.5 million.  Following the exchange offer, the 3,277,500 shares of preferred 
stock accepted in the exchange were cancelled, and a total of 172,500 shares of preferred stock remained 
outstanding. 

For  further  information  on  the  common  stock  and  convertible  perpetual  preferred  stock,  refer  to  the 
Shareholders’ Equity note to the consolidated financial statements of the Registrant. 

4. 

SUBSEQUENT EVENTS 

On  February  15,  2013,  the  Parent  Company  declared  a  dividend  of  $1.5625  per  share  on  its  6.25% 
convertible perpetual preferred stock.  The total dividend amounting to $0.3 million is payable on March 
15, 2013 to holders of record on March 1, 2013. 

****** 

124 

 
 
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,  on 
this 28th day of February, 2013. 

SIGNATURES 

WHITING PETROLEUM CORPORATION 

By   /s/ James J. Volker 
  James J. Volker 
  Chairman and Chief Executive Officer 

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 

Title 

Date 

/s/ James J. Volker 
James J. Volker 

/s/ Michael J. Stevens 
Michael J. Stevens 

/s/ Brent P. Jensen 
Brent P. Jensen 

/s/ Thomas L. Aller 
Thomas L. Aller 

/s/ D. Sherwin Artus 
D. Sherwin Artus 

/s/ Thomas P. Briggs 
Thomas P. Briggs 

/s/ Philip E. Doty 
Philip E. Doty 

/s/ William N. Hahne 
William N. Hahne 

/s/ Allan R. Larson 
Allan R. Larson 

February 28, 2013 

February 28, 2013 

February 28, 2013 

February 28, 2013 

February 28, 2013 

February 28, 2013 

February 28, 2013 

February 28, 2013 

February 28, 2013 

Chairman and Chief  
Executive Officer and Director  
(Principal Executive Officer) 

Vice President and  
Chief Financial Officer  
(Principal Financial Officer) 

Controller and Treasurer  
(Principal Accounting Officer) 

Director 

Director 

Director 

Director 

Director 

Director 

125 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Exhibit 
Number 
(3.1) 

(3.2) 

(4.1) 

(4.2) 

(4.3) 

(4.4) 

(4.5) 

(4.6) 

(4.7) 

(4.8) 

EXHIBIT INDEX 

Exhibit Description 
Restated Certificate of Incorporation of Whiting Petroleum Corporation [Incorporated by 
reference to Exhibit 3.2 to Whiting Petroleum Corporation’s Quarterly Report on Form 10-
Q for the quarter ended June 30, 2011 (File No. 001-31899)]. 
Amended and Restated By-laws of Whiting Petroleum Corporation, effective February 17, 
2011  [Incorporated  by  reference  to  Exhibit  3.2  to  Whiting  Petroleum  Corporation’s 
Annual  Report  on  Form  10-K  for  the  year  ended  December  31,  2010  (File  No.  001-
31899)]. 
Fifth  Amended  and  Restated  Credit  Agreement,  dated  as  of  October  15,  2010,  among 
Whiting  Petroleum  Corporation,  Whiting  Oil  and  Gas  Corporation,  the  lenders  party 
thereto,  JPMorgan  Chase  Bank,  N.A.,  as  Administrative  Agent,  and  the  various  other 
agents  party  thereto  [Incorporated  by  reference  to  Exhibit  4  to  Whiting  Petroleum 
Corporation’s Current Report on Form 8-K dated October 15, 2010 (File No. 001-31899)]. 
First Amendment to Fifth Amended and Restated Credit Agreement, dated as of April 15, 
2011,  among  Whiting  Petroleum  Corporation,  Whiting  Oil  and  Gas  Corporation, 
JPMorgan  Chase  Bank,  N.A.,  as  Administrative  Agent,  the  various  other  agents  party 
thereto and the lenders party thereto [Incorporated by reference to Exhibit 4.1 to Whiting 
Petroleum Corporation’s Quarterly Report on Form 10-Q for the quarter ended March 31, 
2011 (File No. 001-31899)]. 
Second  Amendment  to  Fifth  Amended  and  Restated  Credit  Agreement,  dated  as  of 
October  12,  2011,  among  Whiting  Petroleum  Corporation,  Whiting  Oil  and  Gas 
Corporation,  JPMorgan  Chase  Bank,  N.A.,  as  Administrative  Agent,  the  various  other 
agents party thereto and the lenders party thereto [Incorporated by reference to Exhibit 4 to 
Whiting  Petroleum  Corporation’s  Current  Report  on  Form  8-K  dated  October  12,  2011 
(File No. 001-31899)]. 
Third Amendment to Fifth Amended and Restated Credit Agreement, dated as of October 
19,  2012,  among  Whiting  Petroleum  Corporation,  Whiting  Oil  and  Gas  Corporation, 
JPMorgan  Chase  Bank,  N.A.,  as  Administrative  Agent,  and  the  lenders  party  thereto 
[Incorporated  by  reference  to  Exhibit  4  to  Whiting  Petroleum  Corporation’s  Current 
Report on Form 8-K dated October 19, 2012 (File No. 001-31899)]. 
Subordinated  Indenture,  dated  as  of  April  19,  2005,  by  and  among  Whiting  Petroleum 
Corporation,  Whiting  Oil  and  Gas  Corporation,  Whiting  Programs,  Inc.,  Equity  Oil 
Company  and  The  Bank  of  New  York  Trust  Company,  N.A.,  as  successor  trustee 
[Incorporated  by  reference  to  Exhibit  4.1  to  Whiting  Petroleum  Corporation’s  Current 
Report on Form 8-K dated September 21, 2010 (File No. 001-31899)]. 
Second  Supplemental  Indenture,  dated  September  24,  2010,  among  Whiting  Petroleum 
Corporation, Whiting Oil and Gas Corporation and The Bank of New York Mellon Trust 
Company,  N.A.,  as  Trustee,  creating  the  6.5%  Senior  Subordinated  Notes  due  2018 
[Incorporated  by  reference  to  Exhibit  4.2  to  Whiting  Petroleum  Corporation’s  Current 
Report on Form 8-K dated September 21, 2010 (File No. 001-31899)]. 
Indenture, dated October 4, 2005, by and among Whiting Petroleum Corporation, Whiting 
Oil  and  Gas  Corporation,  Whiting  Programs,  Inc.  and  The  Bank  of  New  York  Trust 
Company, N.A., as successor trustee [Incorporated by reference to Exhibit 4.1 to Whiting 
Petroleum  Corporation’s  Current  Report  on  Form  8-K  dated  October  4,  2005  (File  No. 
001-31899)]. 
Rights  Agreement,  dated  as  of  February  23,  2006,  between  Whiting  Petroleum 
Corporation and Computershare Trust Company, Inc. [Incorporated by reference to Exhibit 
4.1 to Whiting Petroleum Corporation’s Current Report on Form 8-K dated February 23, 
2006 (File No. 001-31899)]. 

126 

 
 
 
 
Exhibit 
Number 
(10.1)* 

(10.2)* 

(10.3)* 

(10.4)* 

(10.5)* 

(10.6)* 

(10.7)* 

(10.8) 

(10.9)* 
(10.10)* 

(10.11)* 

(10.12)* 

(10.13)* 

Exhibit Description 
Whiting Petroleum Corporation 2003 Equity Incentive Plan, as amended through October 
23,  2007 [Incorporated  by  reference to  Exhibit  10.2 to  Whiting  Petroleum  Corporation’s 
Current Report on Form 8-K dated October 23, 2007 (File No. 001-31899)]. 
Form of Restricted Stock Agreement pursuant to the Whiting Petroleum Corporation 2003 
Equity  Incentive  Plan  for  time-based  vesting  awards  prior  to  October  23,  2007 
[Incorporated by reference to Exhibit 10.1 to Whiting Petroleum Corporation’s Quarterly 
Report on Form 10-Q for the quarter ended September 30, 2004 (File No. 001-31899)]. 
Form of Restricted Stock Agreement pursuant to the Whiting Petroleum Corporation 2003 
Equity  Incentive  Plan  for  performance  vesting  awards  prior  to  October  23,  2007  
[Incorporated by reference to Exhibit 10.1 to Whiting Petroleum Corporation’s Quarterly 
Report on Form 10-Q for the quarter ended March 31, 2007 (File No. 001-31899)]. 
Form of Restricted Stock Agreement pursuant to the Whiting Petroleum Corporation 2003 
Equity Incentive Plan for performance vesting awards on and after October 23, 2007 and 
prior  to  February  23,  2008  [Incorporated  by  reference  to  Exhibit  10.3  to  Whiting 
Petroleum  Corporation’s  Current  Report  on  Form  8-K  dated  October  23,  2007  (File  No. 
001-31899)]. 
Form of Restricted Stock Agreement pursuant to the Whiting Petroleum Corporation 2003 
Equity  Incentive  Plan  for  time-based  vesting  awards  on  and  after  October  23,  2007 
[Incorporated  by  reference  to  Exhibit  10.4  to  Whiting  Petroleum  Corporation’s  Current 
Report on Form 8-K dated October 23, 2007 (File No. 001-31899)]. 
Form of Restricted Stock Agreement pursuant to the Whiting Petroleum Corporation 2003 
Equity  Incentive  Plan  for  performance  vesting  awards  on  and  after  February  23,  2008 
[Incorporated by reference to Exhibit 10.1 to Whiting Petroleum Corporation’s Quarterly 
Report on Form 10-Q for the quarter ended March 31, 2008 (File No. 001-31899)]. 
Whiting  Petroleum  Corporation  Production  Participation  Plan,  as  amended  and  restated 
February  4,  2008  [Incorporated  by  reference  to  Exhibit  10.6  to  Whiting  Petroleum 
Corporation’s Annual Report on Form 10-K for the year ended December 31, 2007 (File 
No. 001-31899)]. 
Tax  Separation  and  Indemnification  Agreement  between  Alliant  Energy  Corporation, 
Whiting  Petroleum  Corporation  and  Whiting  Oil  and  Gas  Corporation  [Incorporated  by 
reference  to  Exhibit  10.3  to  Whiting  Petroleum  Corporation’s  Registration  Statement  on 
Form S-1 (Registration No. 333-107341)]. 
Summary of Non-Employee Director Compensation for Whiting Petroleum Corporation. 
Production  Participation  Plan  Credit  Service  Agreement,  dated  February  23,  2007, 
between Whiting Petroleum Corporation and James J. Volker [Incorporated by reference to 
Exhibit  10.7  to  Whiting  Petroleum  Corporation’s  Annual  Report  on  Form  10-K  for  the 
year ended December 31, 2006 (File No. 001-31899)]. 
Amended and Restated Production Participation Plan Supplemental Payment Agreement, 
dated  January  14,  2008,  between  Whiting  Petroleum  Corporation  and  J.  Douglas  Lang 
[Incorporated  by  reference  to  Exhibit  10.6  to  Whiting  Petroleum  Corporation’s  Annual 
Report on Form 10-K for the year ended December 31, 2007 (File No. 001-31899)]. 
Form  of  Indemnification  Agreement  for  directors  and  executive  officers  of  Whiting 
Petroleum Corporation [Incorporated by reference to Exhibit 10.10 to Whiting Petroleum 
Corporation’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2008 
(File No. 001-31899)]. 
Form  of  Executive  Excise  Tax  Gross-Up  Agreement  for  executive  officers  of  Whiting 
Petroleum  Corporation  [Incorporated  by  reference  to  Exhibit  10.1  to  Whiting  Petroleum 
Corporation’s Current Report on Form 8-K dated January 13, 2009 (File No. 001-31899)]. 

127 

 
 
 
Exhibit 
Number 
(10.14)* 

(21) 
(23.1) 
(23.2) 
(31.1) 

(31.2) 

(32.1) 

(32.2) 

(99.1) 

(99.2) 

(101) 

Exhibit Description 
Form  of  Stock  Option  Agreement  pursuant  to  the  Whiting  Petroleum  Corporation  2003 
Equity  Incentive  Plan  [Incorporated  by  reference  to  Exhibit  10.14  to  Whiting  Petroleum 
Corporation’s Annual Report on Form 10-K for the year ended December 31, 2008 (File 
No. 001-31899)]. 
Subsidiaries of Whiting Petroleum Corporation. 
Consent of Deloitte & Touche LLP. 
Consent of Cawley, Gillespie & Associates, Inc., Independent Petroleum Engineers. 
Certification by the Chairman and Chief Executive Officer pursuant to Section 302 of the 
Sarbanes-Oxley Act. 
Certification by the Vice President and Chief Financial Officer pursuant to Section 302 of 
the Sarbanes-Oxley Act. 
Written  Statement  of  the  Chairman  and  Chief  Executive  Officer  pursuant  to  18  U.S.C. 
Section 1350. 
Written Statement of the Vice President and Chief Financial Officer pursuant to 18 U.S.C. 
Section 1350. 
Proxy Statement for the 2013 Annual Meeting of Stockholders, to be filed within 120 days 
of December 31, 2012 [To be filed with the Securities and Exchange Commission under 
Regulation 14A within 120 days after December 31, 2012; except to the extent specifically 
incorporated  by  reference,  the  Proxy  Statement  for  the  2013  Annual  Meeting  of 
Stockholders  shall  not  be  deemed  to  be  filed  with  the  Securities  and  Exchange 
Commission as part of this Annual Report on Form 10-K]. 
Report of Cawley, Gillespie & Associates, Inc., Independent Petroleum Engineers relating 
to Total  Proved  Reserves and  Report  of  Cawley,  Gillespie  &  Associates,  Inc.  relating  to 
Probable and Possible Reserves, each dated January 11, 2013. 
The  following  materials  from  Whiting  Petroleum  Corporation’s  Annual  Report  on  Form 
10-K  for  the  year  ended  December  31,  2012  are  filed  herewith,  formatted  in  XBRL 
(Extensible  Business  Reporting  Language):  (i)  the  Consolidated  Balance  Sheets  as  of 
December  31,  2012  and  2011,  (ii)  the  Consolidated  Statements  of  Income  for  the  Years 
Ended  December  31,  2012,  2011  and  2010,  (iii)  the  Consolidated  Statements  of 
Comprehensive Income for the Years Ended December 31, 2012, 2011 and 2010, (iv) the 
Consolidated Statements of Cash Flow for the Years Ended December 31, 2012, 2011 and 
2010, (v) the Consolidated Statements of Equity for the Years Ended December 31, 2012, 
2011 and 2010 and (vi) Notes to Consolidated Financial Statements. 

* 

A management contract or compensatory plan or arrangement. 

128 

 
 
 
 
Director Compensation 

Effective June 1, 2012, non-employee director compensation is as follows: 

Exhibit 10.9 

Board 
     Service      
Annual retainer ....................................................... $ 
45,000 
Restricted stock (value), one year vesting .............. $  150,000 
Committee chair annual retainer .............................
Committee chair restricted stock (value) ................
Committee member annual retainer ........................
Meeting fee ............................................................. $ 

1,500 

                       Committee Service                       
Nominating 
and 
Governance 

       Audit         Compensation 

$  25,000 
$  25,000 
7,500 
$ 
1,500 
$ 

$ 
$ 
$ 
$ 

15,000 
15,000 
5,000 
1,500 

$  15,000 
$  15,000 
5,000 
$ 
1,500 
$ 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
SUBSIDIARIES OF WHITING PETROLEUM CORPORATION 

Name 
Whiting Oil and Gas Corporation  

Jurisdiction of 
Incorporation or 
Organization 
Delaware 

Percent 
Ownership 
100% 

Exhibit 21 

 
 
 
 
 
 
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM 

We  consent  to  the  incorporation  by  reference  in  Registration  Statement  No.  333-111056  on  Form  S-8, 
Registration Statement No. 333-121614 on Form S-4, and Registration Statement No. 333-183729 on Form S-3 of 
our  reports  dated  February  28,  2013,  relating  to  the  financial  statements  and  financial  statement  schedule  of 
Whiting  Petroleum  Corporation,  and  the  effectiveness  of  Whiting  Petroleum  Corporation’s  internal  control  over 
financial reporting, appearing in this Annual Report on Form 10-K of Whiting Petroleum Corporation for the year 
ended December 31, 2012. 

Exhibit 23.1 

/s/ DELOITTE & TOUCHE LLP 

Denver, Colorado 
February 28, 2013 

 
 
 
 
 
 
 
 
 
 
 
 
Cawley, Gillespie & Associates, Inc. 

P E T R O L E U M   C O N S U L T A N T S  

1 0 0 0   L O U I S I A N A   S T R E E T ,   S U I T E   6 2 5  

H O U S T O N ,   T E X A S   7 7 0 0 2 - 5 0 0 8  

7 1 3 - 6 5 1 - 9 9 4 4  

F A X   7 1 3 - 6 5 1 - 9 9 8 0  

    3 0 6   W E S T   S E V E N T H   S T R E E T ,   S U I T E   3 0 2  
      F O R T   W O R T H ,   T E X A S   7 6 1 0 2 - 4 9 8 7  
      8 1 7 - 3 3 6 - 2 4 6 1  
      F A X   8 1 7 - 8 7 7 - 3 7 2 8  

9 6 0 1   A M B E R G L E N   B L V D . ,   S U I T E   1 1 7  

A U S T I N ,   T E X A S   7 8 7 2 9 - 1 1 0 6  

5 1 2 - 2 4 9 - 7 0 0 0  

F A X   5 1 2 - 2 3 3 - 2 6 1 8    

Exhibit 23.2 

CONSENT OF INDEPENDENT PETROLEUM ENGINEERS 

The undersigned hereby consents to the references to our firm in the form and context in which they appear 
in the Annual Report on Form 10-K of Whiting Petroleum Corporation for the year ended December 31, 2012.  We 
hereby  further  consent  to  the  use  of  information  contained  in  our  reports  setting  forth  the  estimates  of  revenues 
from  Whiting  Petroleum  Corporation’s  oil  and  gas  reserves as  of  December 31,  2012,  2011 and  2010  and  to the 
inclusion  of  our  reports  dated  January  11,  2013  as  an  exhibit  to  the  Annual  Report  on  Form  10-K  of  Whiting 
Petroleum  Corporation  for  the  year  ended  December 31,  2012.    We  further  consent  to  the  incorporation  by 
reference  thereof  into  Whiting  Petroleum  Corporation’s  Registration  Statements  on  Form  S-8  (Registration  No. 
333-111056), Form S-4 (Registration No. 333-121614) and Form S-3 (Registration No. 333-183729). 

Sincerely, 

/s/ Cawley, Gillespie & Associates, Inc. 
Cawley, Gillespie & Associates, Inc. 
Texas Registered Engineering Firm F-693 

February 28, 2013 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Exhibit 31.1 

I, James J. Volker, certify that: 

CERTIFICATIONS 

1. 

2. 

3. 

4. 

I have reviewed this Annual Report on Form 10-K of Whiting Petroleum Corporation; 

Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state 
a  material  fact  necessary  to  make  the  statements  made,  in  light  of  the  circumstances  under  which  such 
statements were made, not misleading with respect to the period covered by this report; 

Based on my  knowledge, the financial statements and other financial information included in this report, 
fairly  present  in  all  material  respects  the  financial  condition,  results  of  operations  and  cash  flows  of  the 
registrant as of, and for, the periods presented in this report; 

The  registrant’s  other  certifying  officer  and  I  are  responsible  for  establishing  and  maintaining  disclosure 
controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over 
financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have: 

a) 

b) 

c) 

d) 

Designed  such  disclosure  controls  and  procedures,  or  caused  such  disclosure  controls  and 
procedures to be designed under our supervision, to ensure that material information relating to the 
registrant,  including  its  consolidated  subsidiaries,  is  made  known  to  us  by  others  within  those 
entities, particularly during the period in which this report is being prepared; 

Designed  such  internal  control  over  financial  reporting,  or  caused  such  internal  control  over 
financial reporting to be designed under our supervision, 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; 

Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in 
this report our conclusions about the effectiveness of the disclosure controls and procedures, as of 
the end of the period covered by this report based on such evaluation; and 

Disclosed in this report any change in the registrant’s internal control over financial reporting that 
occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in 
the case of an annual report) that has materially affected, or is reasonably likely to materially affect, 
the registrant’s internal control over financial reporting; and 

5. 

The  registrant’s  other  certifying  officer  and  I  have  disclosed,  based  on  our  most  recent  evaluation  of 
internal control over financial reporting, to the registrant’s auditors and the audit committee of registrant’s 
board of directors (or persons performing the equivalent functions): 

a) 

b) 

All significant deficiencies and material weaknesses in the design or operation of internal control 
over  financial  reporting  which  are  reasonably  likely  to  adversely  affect  the  registrant’s  ability  to 
record, process, summarize and report financial information; and 

Any  fraud,  whether  or  not  material,  that  involves  management  or  other  employees  who  have  a 
significant role in the registrant’s internal control over financial reporting. 

Date: February 28, 2013 

/s/ James J. Volker 
James J. Volker 
Chairman and Chief Executive Officer 

 
 
 
 
 
 
 
 
 
 
 
Exhibit 31.2 

I, Michael J. Stevens, certify that:  

CERTIFICATIONS 

1. 

2. 

3. 

4. 

I have reviewed this Annual Report on Form 10-K of Whiting Petroleum Corporation;  

Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state 
a  material  fact  necessary  to  make  the  statements  made,  in  light  of  the  circumstances  under  which  such 
statements were made, not misleading with respect to the period covered by this report;  

Based on my  knowledge, the financial statements and other financial information included in this report, 
fairly  present  in  all  material  respects  the  financial  condition,  results  of  operations  and  cash  flows  of  the 
registrant as of, and for, the periods presented in this report;  

The  registrant’s  other  certifying  officer  and  I  are  responsible  for  establishing  and  maintaining  disclosure 
controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over 
financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:  

a) 

b) 

c) 

d) 

Designed  such  disclosure  controls  and  procedures,  or  caused  such  disclosure  controls  and 
procedures to be designed under our supervision, to ensure that material information relating to the 
registrant,  including  its  consolidated  subsidiaries,  is  made  known  to  us  by  others  within  those 
entities, particularly during the period in which this report is being prepared;  

Designed  such  internal  control  over  financial  reporting,  or  caused  such  internal  control  over 
financial reporting to be designed under our supervision, 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; 

Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in 
this report our conclusions about the effectiveness of the disclosure controls and procedures, as of 
the end of the period covered by this report based on such evaluation; and 

Disclosed in this report any change in the registrant’s internal control over financial reporting that 
occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in 
the case of an annual report) that has materially affected, or is reasonably likely to materially affect, 
the registrant’s internal control over financial reporting; and 

5. 

The  registrant’s  other  certifying  officer  and  I  have  disclosed,  based  on  our  most  recent  evaluation  of 
internal control over financial reporting, to the registrant’s auditors and the audit committee of registrant’s 
board of directors (or persons performing the equivalent functions): 

a) 

b) 

All significant deficiencies and material weaknesses in the design or operation of internal control 
over  financial  reporting  which  are  reasonably  likely  to  adversely  affect  the  registrant’s  ability  to 
record, process, summarize and report financial information; and  

Any  fraud,  whether  or  not  material,  that  involves  management  or  other  employees  who  have  a 
significant role in the registrant’s internal control over financial reporting. 

Date: February 28, 2013 

/s/ Michael J. Stevens 
Michael J. Stevens 
Vice President and Chief Financial Officer 

 
 
 
 
 
 
 
 
 
 
 
Written Statement of the Chief Executive Officer  
Pursuant to 18 U.S.C. Section 1350 

Exhibit 32.1 

Solely for the purposes of complying with 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of 
the Sarbanes-Oxley Act of 2002, I, the undersigned Chairman and Chief Executive Officer of Whiting Petroleum 
Corporation,  a  Delaware  corporation  (the  “Company”),  hereby  certify,  based  on  my  knowledge,  that  the  Annual 
Report on Form 10-K of the Company for the fiscal year ended December 31, 2012 (the “Report”) fully complies 
with the requirements of Section 13(a) of the Securities Exchange Act of 1934 and that information contained in the 
Report fairly presents, in all material respects, the financial condition and results of operations of the Company. 

/s/ James J. Volker 
James J. Volker 
Chairman and Chief Executive Officer 

Date: February 28, 2013 

 
 
 
 
 
 
 
 
 
 
 
 
 
Written Statement of the Chief Financial Officer  
Pursuant to 18 U.S.C. Section 1350 

Exhibit 32.2 

Solely for the purposes of complying with 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of 
the  Sarbanes-Oxley  Act  of  2002,  I,  the  undersigned  Vice  President  and  Chief  Financial  Officer  of  Whiting 
Petroleum Corporation, a Delaware corporation (the “Company”), hereby certify, based on my knowledge, that the 
Annual Report on Form 10-K of the Company for the fiscal year ended December 31, 2012 (the “Report”) fully 
complies  with  the  requirements  of  Section  13(a)  of  the  Securities  Exchange  Act  of  1934  and  that  information 
contained in the Report fairly presents, in all material respects, the financial condition and results of operations of 
the Company. 

/s/ Michael J. Stevens 
Michael J. Stevens 
Vice President and Chief Financial Officer 

Date: February 28, 2013 

 
 
 
 
 
 
 
 
 
 
 
 
 
Cawley, Gillespie & Associates, Inc. 

P E T R O L E U M   C O N S U L T A N T S  

1 3 6 4 0   B R I A R W I C K   D R I V E ,   S U I T E   1 0 0  

A U S T I N ,   T E X A S   7 8 7 2 9 - 1 7 0 7  

5 1 2 - 2 4 9 - 7 0 0 0  

    3 0 6   W E S T   S E V E N T H   S T R E E T ,   S U I T E   3 0 2  
      F O R T   W O R T H ,   T E X A S   7 6 1 0 2 - 4 9 8 7  
      8 1 7 - 3 3 6 - 2 4 6 1  
      w w w . c g a u s . c o m  

1 0 0 0   L O U I S I A N A   S T R E E T ,   S U I T E   6 2 5  

H O U S T O N ,   T E X A S   7 7 0 0 2 - 5 0 0 8  

7 1 3 - 6 5 1 - 9 9 4 4  

Exhibit 99.2 

January 11, 2013 

Mr. J. Douglas Lang 
Vice President - Reservoir  
Engineering/Acquisitions 
Whiting Petroleum Corporation 
1700 Broadway, Suite 2300 
Denver, Colorado 80290-2300 

Re:  Evaluation Summary – SEC Price 

Whiting Petroleum Corporation Interests 
Total Proved Reserves 
Various States 
As of December 31, 2012 

Pursuant to the Guidelines of the Securities and 
Exchange Commission for Reporting Corporate 
Reserves and Future Net Revenue 

Dear Mr. Lang: 

As  requested,  we  are  submitting  our  estimates  of  total  proved  reserves  and  forecasts  of  economics 
attributable to the interests in certain oil and gas properties located in various states within the United States.  This 
report,  completed  January  11,  2013  covers  100%  of  the  proved  reserves  estimated  for  Whiting  Petroleum 
Corporation.  This report includes results for an SEC pricing scenario.  The results of this evaluation are presented 
in the accompanying tabulations, with a composite summary presented below: 

Proved 
Developed 
Producing 

Proved 
Developed 
Behind Pipe 

Proved 
Developed 
Non-Producing 

Proved 
Undeveloped 

Total Proved 

Net Reserves 
  Oil 
  Gas 
  NGL 
Revenue 
  Oil 
  Gas 
  NGL 

Severance Taxes 
Ad Valorem Taxes 
Operating Expenses  
Investments 

Net Operating Income 

- Mbbl 
- MMcf 
- Mbbl 

173,010.5 
148,476.9 
20,634.8 

15,008,039.0 
489,681.4 
1,222,986.3 

1,383,756.5 
148,060.0 
5,924,220.0 
255,948.8 

- M$ 
- M$ 
- M$ 

- M$ 
- M$ 
- M$ 
- M$ 

- M$ 

1,440.6 
8,506.3 
470.4 

129,233.3 
26,641.7 
26,235.6 

12,757.9 
1,520.9 
45,398.4 
7,268.1 

16,393.8 
3,909.9 
3,098.5 

1,485,124.4 
11,520.2 
192,707.3 

80,364.7 
36,992.2 
491,099.5 
196,611.5 

110,439.7 
63,370.7 
15,893.9 

9,634,857.0 
192,056.7 
889,669.3 

798,635.9 
147,580.8 
2,326,945.3 
2,721,789.8 

301,284.6 
224,263.8 
40,097.6 

26,257,252.0 
719,900.3 
2,331,598.3 

2,275,515.3 
334,153.9 
8,787,663.0 
3,181,618.8 

  Discounted @ 10% 

- M$ 

5,375,564.5 

25,302.8 

395,337.9 

1,487,691.5 

7,283,896.5 

9,008,719.0 

115,165.3 

884,284.3 

4,721,629.5 

14,729,797.0 

 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
 
 
   
 
The discounted cash flow value shown above should not be construed to represent an estimate of the fair market 
value by Cawley, Gillespie & Associates, Inc. 

Hydrocarbon Pricing 

As requested for the SEC scenario, initial WTI spot oil and Henry Hub Gas Daily prices of $94.71 per Bbl 
and  $2.76  per  MMBtu,  respectively,  were  adjusted  individually  to  WTI  posted  pricing  at  $91.32  per  Bbl  and 
Houston Ship Channel pricing at $2.71 per MMBtu, as of December 31, 2012.  Further adjustments were applied 
on  a  lease  level  basis  for  oil  price  differentials,  gas  price  differentials  and  heating  values  as  furnished  by  your 
office. Prices were not escalated in the SEC scenario.  The average adjusted prices used in the estimation of proved 
reserves were $87.15 per Bbl of oil, $58.15 per Bbl of natural gas liquids and $3.21 per Mcf of natural gas. 

Capital, Expenses and Taxes 

Capital  expenditures,  lease  operating  expenses  and  Ad  Valorem  tax  values  were  forecast  as  provided  by 
your office.  As you explained, the capital costs were based on the most current estimates, lease operating expenses 
were based on the analysis of historical actual expenses, operating overhead is included for operated properties and 
no  credit  or  deduction  is  made  for  producing  overhead  paid  to  the  company  by  other  owners  of  the  operated 
properties.  Capital  costs  and  lease  operating  expenses  were  held  constant  in  accordance  with  SEC  guidelines.  
Severance tax rates were applied at normal state percentages of oil and gas revenue. 

SEC Conformance and Regulations 

The reserve classifications and the economic considerations used herein conform to the criteria of the SEC 
as  defined  in  pages  3  and  4  of  the  Appendix.    The  reserves  and  economics  are  predicated  on  regulatory  agency 
classifications,  rules,  policies,  laws,  taxes  and  royalties  currently  in  effect  except  as  noted  herein.    The  possible 
effects  of  changes  in  legislation  or  other  Federal  or  State  restrictive  actions  which  could  affect  the  reserves  and 
economics have not been considered.  However, we do not anticipate nor are we aware of any legislative changes or 
restrictive regulatory actions that may impact the recovery of reserves.  

Reserve Estimation Methods 

The  methods  employed  in  estimating  reserves  are  described  on  page  2  of  the  Appendix.  Reserves  for 
proved developed producing wells were estimated using production performance methods for the vast majority of 
properties. Certain new producing properties with very little production history were forecast using a combination 
of production performance and analogy to similar production, both of which are considered to provide a relatively 
high degree of accuracy.  

Non-producing  reserve  estimates,  for  both  developed  and  undeveloped  properties,  were  forecast  using 
either volumetric or analogy methods, or a combination of both. These methods provide a relatively high degree of 
accuracy for predicting proved developed non-producing and proved undeveloped reserves. The assumptions, data, 
methods and procedures used herein are appropriate for the purpose served by this report. 

Miscellaneous 

An  on-site  field  inspection  of  the  properties  has  not  been  performed.  The  mechanical  operation  or 
conditions  of  the  wells  and  their  related  facilities  have  not  been  examined  nor  have  the  wells  been  tested  by 
Cawley,  Gillespie  &  Associates,  Inc.    Possible  environmental  liability  related  to  the  properties  has  not  been 
investigated nor considered.  The cost of plugging and the salvage  value of equipment at abandonment have not 
been included. 

The reserve estimates were based on interpretations of factual data furnished by your office.  We have used 
all methods and procedures as we considered necessary under the circumstances to prepare the report.  We believe 
that  the  assumptions,  data,  methods  and  procedures  were  appropriate  for  the  purpose  served  by  this  report.  
Production  data,  gas  prices,  gas  price  differentials,  expense  data,  tax  values  and  ownership  interests  were  also 

 
 
 
supplied by you and were accepted as furnished.  To some extent information from public records has been used to 
check  and/or  supplement  these  data.    The  basic  engineering  and  geological  data  were  subject  to  third  party 
reservations and qualifications.  Nothing has come to our attention, however, that would cause us to believe that we 
are not justified in relying on such data. 

The  professional  qualifications  of  the  undersigned,  the  technical  person  primarily  responsible  for  the 

preparation of this report, are included as an attachment to this letter. 

Yours very truly, 

/s/ Robert D. Ravnaas 
Robert D. Ravnaas, P.E. 
President 
Cawley, Gillespie & Associates 
Texas Registered Engineering Firm F-693 

 
 
 
 
 
 
 
 
 
 
 
 
APPENDIX 

Explanatory Comments for Individual Tables 

Table Number 
Effective Date of the Evaluation 
Identity of Interest Evaluated 
Reserve Classification and Development Status 
Operator – Property Name 
Field (Reservoir) Names – County, State 

Calendar or Fiscal years/months commencing on effective date. 
Gross Production (8/8th) for the years/months which are economical.  These are expressed as thousands of barrels (Mbbl) and millions of 
cubic feet (MMcf) of gas at standard conditions. Total future production, cumulative production to effective date, and ultimate recovery at the 
effective date are shown following the annual/monthly forecasts.  
Net Production accruable to evaluated interest is calculated by multiplying the revenue interest times the gross production.  These values take 
into account changes in interest and gas shrinkage. 
Average (volume weighted) gross liquid price per barrel before deducting production-severance taxes. 
Average (volume weighted) gross gas price per Mcf before deducting production-severance taxes. 
Average (volume weighted) gross NGL price per barrel before deducting production-severance taxes. 
Revenue derived from oil sales -- column (5) times column (8). 
Revenue derived from gas sales -- column (6) times column (9). 
Revenue derived from NGL sales -- column (7) times column (10). 
Revenue derived from other sources. 
Revenue derived from hedge positions. 
Total Revenue – sum of column (12) through column (16). 
Production-Severance taxes deducted from gross oil and NGL revenue. 
Production-Severance taxes deducted from gross gas revenue. 
Revenue after taxes – column (17) less column (18) and column (19). 
Operating Expenses are direct operating expenses to the evaluated working interest and may include combined fixed rate administrative 
overhead charges for operated oil and gas producers known as COPAS. 
Ad Valorem taxes. 
Work-over Expenses are non-direct operating expenses and may include maintenance, well service, compressor, tubing, and pump repair. 
3rd Party COPAS are combined fixed rate administrative overhead charges for non-operated oil and gas producers. 
Other Deductions may include compression-gathering expenses, transportation costs and water disposal costs. 
Investments, if any, include re-completions, future drilling costs, pumping units, etc. and may include either tangible or intangible or both, and 
the costs for plugging and the salvage value of equipment at abandonment may be shown as negative investments at end of life. 
Future Net Cash Flow is column (18) less the total of column (19), column (22), column (24), column (25), column (26) and column (27).  
The data in column (28) are accumulated in column (29).  Federal income taxes have not been considered. 
Cumulative Discounted Cash Flow is calculated by discounting monthly cash flows at the specified annual rates. 

HEADINGS 

FORECAST 

(Columns) 
(1) (11) (21) 
(2) (3) (4) 

(5) (6) (7) 

(8) 
(9) 
(10) 
(12) 
(13) 
(14) 
(15) 
(16) 
(17) 
(18) 
(19) 
(20) 
(22) 

(23) 
(24) 
(25) 
(26) 
(27) 

(28) (29) 

(30) 

MISCELLANEOUS 

Input Data 
Interests 
DCF Profile 

Life 
Footnotes 

•  Evaluation parameters such as rates, tax percentages, and expenses are shown below columns (21-26). 
• 
•  The cash flow discounted at six different rates are shown at the bottom of columns (29-30).  Interest has been compounded 

Initial and final expense and revenue interests are shown below columns (27-28). 

monthly. 

•  The economic life of the appraised property is noted in the lower right-hand corner of the table. 
•  Well ID information or other pertinent comments may be shown in the lower left-hand footnotes. 

Cawley, Gillespie & Associates, Inc. 

 Appendix 
Page 1 

 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
APPENDIX 

Methods Employed in the Estimation of Reserves 

The  four  methods  customarily  employed  in  the  estimation  of  reserves  are  (1)  production  performance,  (2)  material  balance,  (3) 
volumetric and (4) analogy.  Most estimates, although based primarily on one method, utilize other methods depending on the nature and extent 
of the data available and the characteristics of the reservoirs. 

Basic  information  includes  production,  pressure,  geological  and  laboratory  data.    However,  a  large  variation  exists  in  the  quality, 
quantity and types of information available on individual properties.  Operators are generally required by regulatory authorities to file monthly 
production reports and may be required to measure and report periodically such data as well pressures, gas-oil ratios, well tests, etc.  As a general 
rule, an operator has complete discretion in obtaining and/or making available geological and engineering data.  The resulting lack of uniformity 
in data renders impossible the application of identical  methods to all properties, and  may result in significant differences in the accuracy and 
reliability of estimates. 

A brief discussion of each method, its basis, data requirements, applicability and generalization as to its relative degree of accuracy 

follows: 

Production  performance.    This  method  employs  graphical  analyses  of  production  data  on  the  premise  that  all  factors  which  have 
controlled the performance to date will continue to control and that historical trends can be extrapolated to predict future performance.  The only 
information  required  is  production  history.    Capacity  production  can  usually  be  analyzed  from  graphs  of  rates  versus  time  or  cumulative 
production.  This procedure is referred to as "decline curve" analysis.  Both capacity and restricted production can, in some cases, be analyzed 
from  graphs  of  producing  rate  relationships  of  the  various  production  components.    Reserve  estimates  obtained  by  this  method  are  generally 
considered to have a relatively high degree of accuracy with the degree of accuracy increasing as production history accumulates. 

Material balance.  This method employs the analysis of the relationship of production and pressure performance on the premise that 
the  reservoir  volume  and  its  initial  hydrocarbon  content  are  fixed  and  that  this  initial  hydrocarbon  volume  and  recoveries  therefrom  can  be 
estimated by analyzing changes in pressure with respect to production relationships.  This method requires reliable pressure and temperature data, 
production data, fluid analyses and knowledge of the nature of the reservoir.  The material balance method is applicable to all reservoirs, but the 
time and expense required for its use is dependent on the nature of the reservoir and its fluids.  Reserves for depletion type reservoirs can be 
estimated  from  graphs of pressures  corrected  for  compressibility  versus  cumulative production, requiring only data that are usually  available.  
Estimates for other reservoir types require extensive data and involve complex calculations most suited to computer models which makes this 
method generally applicable only to reservoirs where there is economic justification for its use.  Reserve estimates obtained by this method are 
generally considered to have a degree of accuracy that is directly related to the complexity of the reservoir and the quality and quantity of data 
available. 

Volumetric.    This  method  employs  analyses  of  physical  measurements  of  rock  and  fluid  properties  to  calculate  the  volume  of 
hydrocarbons in-place.  The data  required are  well information sufficient to determine reservoir subsurface datum, thickness, storage volume, 
fluid  content  and  location.    The  volumetric  method  is  most  applicable  to  reservoirs  which  are  not  susceptible  to  analysis  by  production 
performance or material balance methods.  These are most commonly newly developed and/or no-pressure depleting reservoirs.  The amount of 
hydrocarbons in-place that can be recovered is not an integral part of the volumetric calculations but is an estimate inferred by other methods and 
a knowledge of the nature of the reservoir.  Reserve estimates obtained by this method are generally considered to have a low degree of accuracy; 
but  the  degree  of  accuracy  can  be  relatively  high  where  rock  quality  and  subsurface  control  is  good  and  the  nature  of  the  reservoir  is 
uncomplicated. 

Analogy.  This method which employs experience and judgment to estimate reserves, is based on observations of similar situations and 
includes  consideration  of  theoretical  performance.    The  analogy  method  is  applicable  where  the  data  are  insufficient  or  so  inconclusive  that 
reliable  reserve  estimates  cannot  be  made  by  other  methods.    Reserve  estimates  obtained  by  this  method  are  generally  considered  to  have  a 
relatively low degree of accuracy.  

Much of the information used in the estimation of reserves is itself arrived at by the use of estimates.  These estimates are subject to 
continuing change as additional information becomes available.  Reserve estimates which presently appear to be correct may be found to contain 
substantial errors as time passes and new information is obtained about well and reservoir performance. 

Cawley, Gillespie & Associates, Inc. 

 Appendix 
Page 2 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
APPENDIX 

Reserve Definitions and Classifications 

The Securities and Exchange Commission, in SX Reg. 210.4-10 dated November 18, 1981, as amended on September 19, 1989 and 

January 1, 2010, requires adherence to the following definitions of oil and gas reserves: 

“(22) 

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  extract  the  hydrocarbons  must  have  commenced  or  the  operator  must  be 
reasonably certain that it will commence the project within a reasonable time. 

“(i) 

The area of a reservoir considered as proved includes: (A) The area identified by drilling and limited by fluid contacts, if any, 
and  (B)  Adjacent  undrilled  portions  of  the  reservoir  that  can,  with  reasonable  certainty,  be  judged  to  be  continuous  with  it  and  to  contain 
economically producible oil or gas on the basis of available geoscience and engineering data.  

“(ii) 

In  the  absence  of  data  on  fluid  contacts,  proved  quantities  in  a  reservoir  are  limited  by  the  lowest  known  hydrocarbons 
(LKH) as seen in a well penetration unless geoscience, engineering, or performance data and reliable technology establishes a lower contact with 
reasonable certainty. 

“(iii)  Where direct observation from well penetrations has defined a highest known oil (HKO) elevation and the potential exists 
for an associated gas cap, proved oil reserves may be assigned in the structurally higher portions of the reservoir only if geoscience, engineering, 
or performance data and reliable technology establish the higher contact with reasonable certainty. 

“(iv)  Reserves  which  can  be  produced  economically  through  application  of  improved  recovery  techniques  (including,  but  not 
limited to, fluid injection) are included in the proved classification when: (A) Successful testing by a pilot project in an area of the reservoir with 
properties no more favorable than in the reservoir as a whole, the operation of an installed program in the reservoir or an analogous reservoir, or 
other evidence using reliable technology establishes the reasonable certainty of the engineering analysis on which the project or program was 
based; and (B) The project has been approved for development by all necessary parties and entities, including governmental entities. 

“(v)  Existing economic conditions include prices and costs at which economic producibility from a reservoir is to be determined. 
The price shall be the average price during the 12-month period prior to the ending date of the period covered by the report, determined as an 
unweighted arithmetic average of the first-day-of-the-month price for each month within such period, unless prices are defined by contractual 
arrangements, excluding escalations based upon future conditions. 

“(6) 

Developed oil and gas reserves.  Developed oil and gas reserves are reserves of any category that can be expected to be 

recovered:  

“(i) 

Through existing  wells  with existing equipment and operating  methods or in which the cost of the  required equipment is 

relatively minor compared to the cost of a new well; and  

“(ii)  Through installed extraction equipment and infrastructure operational at the time of the reserves estimate if the extraction is 

by means not involving a well. 

“(31) 

Undeveloped oil and gas reserves.  Undeveloped oil and gas reserves are reserves of any category 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.  

“(i) 

Reserves  on  undrilled  acreage  shall  be  limited  to  those  directly  offsetting  development  spacing  areas  that  are  reasonably 
certain  of  production  when  drilled,  unless  evidence  using  reliable  technology  exists  that  establishes  reasonable  certainty  of  economic 
producibility at greater distances.  

“(ii)  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.  

“(iii)  Under no circumstances shall estimates for undeveloped reserves be attributable to any acreage for which an application of 
fluid injection or other improved recovery technique is contemplated, unless such techniques have been proved effective by actual projects in the 
same  reservoir  or  an  analogous  reservoir,  as  defined  in  paragraph  (a)(2)  of  this  section,  or  by  other  evidence  using  reliable  technology 
establishing reasonable certainty. 

Cawley, Gillespie & Associates, Inc. 

 Appendix 
Page 3 

 
 
 
 
 
 
 
 
 
 
“(18) 

Probable  reserves.    Probable  reserves  are  those  additional  reserves  that  are  less  certain  to  be  recovered  than  proved 

reserves but which, together with proved reserves, are as likely as not to be recovered. 

“(i)  When deterministic methods are used, it is as likely as not that actual remaining quantities recovered will exceed the sum of 
estimated  proved  plus  probable  reserves.  When  probabilistic  methods  are  used,  there  should  be  at  least  a  50%  probability  that  the  actual 
quantities recovered will equal or exceed the proved plus probable reserves estimates.  

“(ii) 

Probable reserves may be assigned to areas of a reservoir adjacent to proved reserves where data control or interpretations of 
available  data  are  less  certain,  even  if  the  interpreted  reservoir  continuity  of  structure  or  productivity  does  not  meet  the  reasonable  certainty 
criterion. Probable reserves may be assigned to areas that are structurally higher than the proved area if these areas are in communication with the 
proved reservoir.  

“(iii)  Probable reserves estimates also include potential incremental quantities associated with a greater percentage recovery of the 

hydrocarbons in place than assumed for proved reserves.  

“(iv)  See also guidelines in paragraphs (17)(iv) and (17)(vi) of this section (below). 

"(17) 

Possible  reserves.    Possible  reserves  are  those  additional  reserves  that  are  less  certain  to  be  recovered  than  probable 

reserves. 

“(i)  When  deterministic  methods  are  used,  the  total  quantities  ultimately  recovered  from  a  project  have  a  low  probability  of 
exceeding proved plus probable plus possible reserves. When probabilistic methods are used, there should be at least a 10% probability that the 
total quantities ultimately recovered will equal or exceed the proved plus probable plus possible reserves estimates. 

“(ii) 

Possible reserves may be assigned to areas of a reservoir adjacent to probable reserves where data control and interpretations 
of  available  data  are  progressively  less  certain.  Frequently,  this  will  be  in  areas  where  geoscience  and  engineering  data  are  unable  to  define 
clearly the area and vertical limits of commercial production from the reservoir by a defined project. 

“(iii)  Possible reserves also include incremental quantities associated with a greater percentage recovery of the hydrocarbons in 

place than the recovery quantities assumed for probable reserves. 

“(iv)  The proved plus probable and proved plus probable plus possible reserves estimates must be based on reasonable alternative 
technical and commercial interpretations within the reservoir or subject project that are clearly documented, including comparisons to results in 
successful similar projects. 

“(v) 

Possible reserves may be assigned where geoscience and engineering data identify directly adjacent portions of a reservoir 
within  the  same  accumulation  that  may  be  separated  from  proved  areas  by  faults  with  displacement  less  than  formation  thickness  or  other 
geological  discontinuities  and  that  have  not  been  penetrated  by  a  wellbore,  and  the  registrant  believes  that  such  adjacent  portions  are  in 
communication  with  the  known  (proved)  reservoir.  Possible  reserves  may  be  assigned  to  areas  that  are  structurally  higher  or  lower  than  the 
proved area if these areas are in communication with the proved reservoir. 

“(vi)  Pursuant  to  paragraph  (22)(iii)  of  this  section  (above),  where  direct  observation  has  defined  a  highest  known  oil  (HKO) 
elevation  and  the  potential  exists  for  an  associated  gas  cap,  proved  oil  reserves  should  be  assigned  in  the  structurally  higher  portions  of  the 
reservoir  above  the  HKO  only  if  the  higher  contact  can  be  established  with  reasonable  certainty  through  reliable  technology.  Portions  of  the 
reservoir  that  do  not  meet  this  reasonable  certainty  criterion  may  be  assigned  as  probable  and  possible  oil  or  gas  based  on  reservoir  fluid 
properties and pressure gradient interpretations.” 

Instruction  4  of  Item  2(b)  of  Securities  and  Exchange  Commission  Regulation  S-K  was  revised  January  1,  2010  to  state  that  "a 
registrant  engaged  in  oil  and  gas  producing  activities  shall  provide  the  information  required  by  Subpart  1200  of  Regulation  S–K."    This  is 
relevant in that Instruction 2 to paragraph (a)(2) states: “The registrant is permitted, but not required, to disclose probable or possible reserves 
pursuant to paragraphs (a)(2)(iv) through (a)(2)(vii) of this Item.” 

“(26) 

Reserves.  Reserves are estimated remaining quantities of oil and gas and related substances anticipated to be economically 
producible, as of a given date, by application of development projects to known accumulations. In addition, there must exist, or there must be a 
reasonable expectation that there will exist, the legal right to produce or a revenue interest in the production, installed means of delivering oil and 
gas or related substances to market, and all permits and financing required to implement the project. 

“Note  to  paragraph  (26):  Reserves  should  not  be  assigned  to  adjacent  reservoirs  isolated  by  major,  potentially  sealing,  faults  until 
those reservoirs are penetrated and evaluated as economically producible. Reserves should not be assigned to areas that are clearly separated from 
a known accumulation by a non-productive reservoir (i.e., absence of reservoir, structurally low reservoir, or negative test results). Such areas 
may contain prospective resources (i.e., potentially recoverable resources from undiscovered accumulations).”

Cawley, Gillespie & Associates, Inc. 

 Appendix 
Page 4 

 
 
 
 
 
 
Cawley, Gillespie & Associates, Inc. 

P E T R O L E U M   C O N S U L T A N T S  

1 3 6 4 0   B R I A R W I C K   D R I V E ,   S U I T E   1 0 0  

A U S T I N ,   T E X A S   7 8 7 2 9 - 1 7 0 7  

5 1 2 - 2 4 9 - 7 0 0 0  

    3 0 6   W E S T   S E V E N T H   S T R E E T ,   S U I T E   3 0 2  
      F O R T   W O R T H ,   T E X A S   7 6 1 0 2 - 4 9 8 7  
      8 1 7 - 3 3 6 - 2 4 6 1  
      w w w . c g a u s . c o m  

1 0 0 0   L O U I S I A N A   S T R E E T ,   S U I T E   6 2 5  

H O U S T O N ,   T E X A S   7 7 0 0 2 - 5 0 0 8  

7 1 3 - 6 5 1 - 9 9 4 4  

January 11, 2013 

Mr. J. Douglas Lang 
Vice President - Reservoir  
Engineering/Acquisitions 
Whiting Petroleum Corporation 
1700 Broadway, Suite 2300 
Denver, Colorado 80290-2300 

Re: 

Evaluation Summary – SEC Price 
Whiting Petroleum Corporation Interests 
Probable and Possible Reserves 
Various States 
As of December 31, 2012 

Pursuant to the Guidelines of the Securities and 
Exchange Commission for Reporting  Corporate 
Reserves and Future Net Revenue 

Dear Mr. Lang: 

As requested, we are submitting our estimates of probable and possible reserves and forecasts of economics 
attributable to the interests in certain oil and gas properties located in various states within the United States.  This 
report,  completed  January  11,  2013  covers  100%  of  the  probable  and  possible  reserves  estimated  for  Whiting 
Petroleum Corporation.  This report includes results for an SEC pricing scenario.  The results of this evaluation are 
presented in the accompanying tabulations, with a composite summary presented below: 

Net Reserves 

Oil 
Gas 
NGL 
Revenue 
Oil 
Gas 
NGL 

Severance Taxes 
Ad Valorem Taxes 
Operating Expenses  
Investments 

Net Operating Income 

- Mbbl 
- MMcf 
- Mbbl 

- M$ 
- M$ 
- M$ 

- M$ 
- M$ 
- M$ 
- M$ 

- M$ 

Discounted @ 10% 

- M$ 

Probable Developed 
Behind Pipe 

Probable Developed         

Non-Producing 

Probable 
Undeveloped 

Total 
Probable 

850.0 
6,926.4 
138.8 

77,911.9 
25,264.4 
7,623.9 

7,034.2 
1,464.4 
35,309.8 
5,109.4 

61,882.4 

34,926.4 

1,492.4 
57.8 
395.2 

135,155.8 
148.9 
25,604.6 

7,406.1 
3,730.1 
44,577.0 
21,919.4 

83,276.7 

30,450.2 

82,639.1 
102,597.8 
11,388.4 

7,216,017.5 
329,689.5 
627,543.8 

547,473.3 
188,486.3 
1,499,329.9 
2,149,231.5 

84,981.5 
109,582.0 
11,922.3 

7,429,085.0 
355,102.8 
660,772.3 

561,913.6 
193,680.9 
1,579,216.6 
2,176,260.3 

3,788,730.5 

3,933,890.3 

1,196,386.5 

1,261,763.1 

 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
 
 
 
 
 
 
Net Reserves 
   Oil 
   Gas 
   NGL 
Revenue 
   Oil 
   Gas 
   NGL 

Severance Taxes 
Ad Valorem Taxes 
Operating Expenses  
Investments 

Net Operating Income 

- Mbbl 
- MMcf 
- Mbbl 

- M$ 
- M$ 
- M$ 

- M$ 
- M$ 
- M$ 
- M$ 

- M$ 

Discounted @ 10% 

- M$ 

Possible Developed 

Possible Undeveloped 

772.3 
1,720.7 
97.1 

68,187.8 
5,252.7 
5,639.8 

4,543.7 
1,866.4 
16,204.1 
6,845.6 

49,620.5 

34,008.3 

122,406.8 
154,660.9 
21,838.6 

10,866,868.0 
446,190.9 
1,320,019.9 

730,987.0 
277,333.0 
1,716,433.6 
2,526,578.0 

7,381,748.5 

1,325,599.5 

Total 
Possible 

123,179.1 
156,381.6 
21,935.7 

10,935,056.0 
451,443.7 
1,325,659.6 

735,530.6 
279,199.3 
1,732,637.6 
2,533,424.3 

7,431,368.0 

1,359,607.6 

The discounted cash flow value shown above should not be construed to represent an estimate of the fair market 
value by Cawley, Gillespie & Associates, Inc. 

Hydrocarbon Pricing 

As requested for the SEC scenario, initial WTI spot oil and Henry Hub Gas Daily prices of $94.71 per Bbl 
and  $2.76  per  MMBtu,  respectively,  were  adjusted  individually  to  WTI  posted  pricing  at  $91.32  per  Bbl  and 
Houston Ship Channel pricing at $2.71 per MMBtu, as of December 31, 2012.  Further adjustments were applied 
on  a  lease  level  basis  for  oil  price  differentials,  gas  price  differentials  and  heating  values  as  furnished  by  your 
office.    Prices  were  not  escalated  in  the  SEC  scenario.    The  average  adjusted  prices  used  in  the  estimation  of 
Probable reserves were $87.42 per Bbl of oil, $55.42 per Bbl of natural gas liquids and $3.24 per Mcf of natural 
gas.  For the Possible reserves, the average adjusted prices were $88.77 per Bbl of oil, $60.43 per Bbl of natural gas 
liquids and $2.89 per Mcf of natural gas. 

Capital, Expenses and Taxes 

Capital  expenditures,  lease  operating  expenses  and  Ad  Valorem  tax  values  were  forecast  as  provided  by 
your office.  As you explained, the capital costs were based on the most current estimates, lease operating expenses 
were based on the analysis of historical actual expenses, operating overhead is included for operated properties and 
no  credit  or  deduction  is  made  for  producing  overhead  paid  to  the  company  by  other  owners  of  the  operated 
properties.    Capital  costs  and  lease  operating  expenses  were  held  constant  in  accordance  with  SEC  guidelines.  
Severance tax rates were applied at normal state percentages of oil and gas revenue. 

SEC Conformance and Regulations 

The reserve classifications and the economic considerations used herein conform to the criteria of the SEC as 
defined on page 4 of the Appendix.  The reserves and economics are predicated on regulatory agency classifications, 
rules, policies, laws, taxes and royalties currently in effect except as noted herein.  The possible effects of changes in 
legislation or other Federal or State restrictive actions which could affect the reserves and economics have not been 
considered.  However, we do not anticipate nor are we aware of any legislative changes or restrictive regulatory actions 
that may impact the recovery of reserves.  

Reserve Estimation Methods 

The  methods  employed  in  estimating  reserves  are  described  on  pages  2  through  4  of  the  Appendix. 
Reserves  for  producing  wells  were  estimated  using  production  performance  methods  for  the  vast  majority  of 

 
 
 
  
  
 
 
 
 
properties. Certain new producing properties with very little production history were forecast using a combination 
of production performance and analogy to similar production, both of which are considered to provide a relatively 
high degree of accuracy.  

Non-producing  reserve  estimates,  for  both  developed  and  undeveloped  properties,  were  forecast  using 
either volumetric or analogy methods, or a combination of both. These methods provide a relatively high degree of 
accuracy for predicting developed non-producing and undeveloped reserves.  The assumptions, data, methods and 
procedures used herein are appropriate for the purpose served by this report. 

Miscellaneous 

An  on-site  field  inspection  of  the  properties  has  not  been  performed.  The  mechanical  operation  or 
conditions  of  the  wells  and  their  related  facilities  have  not  been  examined  nor  have  the  wells  been  tested  by 
Cawley,  Gillespie  &  Associates,  Inc.    Possible  environmental  liability  related  to  the  properties  has  not  been 
investigated nor considered.  The cost of plugging and the salvage  value of equipment at abandonment have not 
been included. 

The reserve estimates were based on interpretations of factual data furnished by your office.  We have used all 
methods and procedures as we considered necessary under the circumstances to prepare the report.  We believe that the 
assumptions, data, methods and procedures were appropriate for the purpose served by this report.  Production data, gas 
prices,  gas  price  differentials, expense  data,  tax  values and  ownership interests  were also supplied by  you  and  were 
accepted as furnished.  To some extent information from public records has been used to check and/or supplement these 
data.  The basic engineering and geological data were subject to third party reservations and qualifications.  Nothing has 
come to our attention, however, that would cause us to believe that we are not justified in relying on such data. 

The  professional  qualifications  of  the  undersigned,  the  technical  person  primarily  responsible  for  the 

preparation of this report, are included as an attachment to this letter. 

Yours very truly, 

/s/ Robert D. Ravnaas 
Robert D. Ravnaas, P.E. 
President 
Cawley, Gillespie & Associates 
Texas Registered Engineering Firm F-693 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
APPENDIX 

Explanatory Comments for Individual Tables 

Table Number 
Effective Date of the Evaluation 
Identity of Interest Evaluated 
Reserve Classification and Development Status 
Operator – Property Name 
Field (Reservoir) Names – County, State 

Calendar or Fiscal years/months commencing on effective date. 
Gross Production (8/8th) for the years/months which are economical.  These are expressed as thousands of barrels (Mbbl) and millions of 
cubic feet (MMcf) of gas at standard conditions. Total future production, cumulative production to effective date, and ultimate recovery at the 
effective date are shown following the annual/monthly forecasts.  
Net Production accruable to evaluated interest is calculated by multiplying the revenue interest times the gross production.  These values take 
into account changes in interest and gas shrinkage. 
Average (volume weighted) gross liquid price per barrel before deducting production-severance taxes. 
Average (volume weighted) gross gas price per Mcf before deducting production-severance taxes. 
Average (volume weighted) gross NGL price per barrel before deducting production-severance taxes. 
Revenue derived from oil sales -- column (5) times column (8). 
Revenue derived from gas sales -- column (6) times column (9). 
Revenue derived from NGL sales -- column (7) times column (10). 
Revenue derived from other sources. 
Revenue derived from hedge positions. 
Total Revenue – sum of column (12) through column (16). 
Production-Severance taxes deducted from gross oil and NGL revenue. 
Production-Severance taxes deducted from gross gas revenue. 
Revenue after taxes – column (17) less column (18) and column (19). 
Operating Expenses are direct operating expenses to the evaluated working interest and may include combined fixed rate administrative 
overhead charges for operated oil and gas producers known as COPAS. 
Ad Valorem taxes. 
Work-over Expenses are non-direct operating expenses and may include maintenance, well service, compressor, tubing, and pump repair. 
3rd Party COPAS are combined fixed rate administrative overhead charges for non-operated oil and gas producers. 
Other Deductions may include compression-gathering expenses, transportation costs and water disposal costs. 
Investments, if any, include re-completions, future drilling costs, pumping units, etc. and may include either tangible or intangible or both, and 
the costs for plugging and the salvage value of equipment at abandonment may be shown as negative investments at end of life. 
Future Net Cash Flow is column (18) less the total of column (19), column (22), column (24), column (25), column (26) and column (27).  
The data in column (28) are accumulated in column (29).  Federal income taxes have not been considered. 
Cumulative Discounted Cash Flow is calculated by discounting monthly cash flows at the specified annual rates. 

HEADINGS 

FORECAST 

(Columns) 
(1) (11) (21) 
(2) (3) (4) 

(5) (6) (7) 

(8) 
(9) 
(10) 
(12) 
(13) 
(14) 
(15) 
(16) 
(17) 
(18) 
(19) 
(20) 
(22) 

(23) 
(24) 
(25) 
(26) 
(27) 

(28) (29) 

(30) 

MISCELLANEOUS 

Input Data 
Interests 
DCF Profile 

Life 
Footnotes 

•  Evaluation parameters such as rates, tax percentages, and expenses are shown below columns (21-26). 
• 
•  The cash flow discounted at six different rates are shown at the bottom of columns (29-30).  Interest has been compounded 

Initial and final expense and revenue interests are shown below columns (27-28). 

monthly. 

•  The economic life of the appraised property is noted in the lower right-hand corner of the table. 
•  Well ID information or other pertinent comments may be shown in the lower left-hand footnotes. 

Cawley, Gillespie & Associates, Inc. 

 Appendix 
Page 1 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
APPENDIX 

Methods Employed in the Estimation of Reserves 

The  four  methods  customarily  employed  in  the  estimation  of  reserves  are  (1)  production  performance,  (2)  material  balance,  (3) 
volumetric and (4) analogy.  Most estimates, although based primarily on one method, utilize other methods depending on the nature and extent 
of the data available and the characteristics of the reservoirs. 

Basic  information  includes  production,  pressure,  geological  and  laboratory  data.    However,  a  large  variation  exists  in  the  quality, 
quantity and types of information available on individual properties.  Operators are generally required by regulatory authorities to file monthly 
production reports and may be required to measure and report periodically such data as well pressures, gas-oil ratios, well tests, etc.  As a general 
rule, an operator has complete discretion in obtaining and/or making available geological and engineering data.  The resulting lack of uniformity 
in data renders impossible the application of identical  methods to all properties, and  may result in significant differences in the accuracy and 
reliability of estimates. 

A brief discussion of each method, its basis, data requirements, applicability and generalization as to its relative degree of accuracy 

follows: 

Production  performance.    This  method  employs  graphical  analyses  of  production  data  on  the  premise  that  all  factors  which  have 
controlled the performance to date will continue to control and that historical trends can be extrapolated to predict future performance.  The only 
information  required  is  production  history.    Capacity  production  can  usually  be  analyzed  from  graphs  of  rates  versus  time  or  cumulative 
production.  This procedure is referred to as "decline curve" analysis.  Both capacity and restricted production can, in some cases, be analyzed 
from  graphs  of  producing  rate  relationships  of  the  various  production  components.    Reserve  estimates  obtained  by  this  method  are  generally 
considered to have a relatively high degree of accuracy with the degree of accuracy increasing as production history accumulates. 

Material balance.  This method employs the analysis of the relationship of production and pressure performance on the premise that 
the  reservoir  volume  and  its  initial  hydrocarbon  content  are  fixed  and  that  this  initial  hydrocarbon  volume  and  recoveries  therefrom  can  be 
estimated by analyzing changes in pressure with respect to production relationships.  This method requires reliable pressure and temperature data, 
production data, fluid analyses and knowledge of the nature of the reservoir.  The material balance method is applicable to all reservoirs, but the 
time and expense required for its use is dependent on the nature of the reservoir and its fluids.  Reserves for depletion type reservoirs can be 
estimated  from  graphs of pressures  corrected  for  compressibility  versus  cumulative production, requiring only data that are usually  available.  
Estimates for other reservoir types require extensive data and involve complex calculations most suited to computer models which makes this 
method generally applicable only to reservoirs where there is economic justification for its use.  Reserve estimates obtained by this method are 
generally considered to have a degree of accuracy that is directly related to the complexity of the reservoir and the quality and quantity of data 
available. 

Volumetric.    This  method  employs  analyses  of  physical  measurements  of  rock  and  fluid  properties  to  calculate  the  volume  of 
hydrocarbons in-place.  The data  required are  well information sufficient to determine reservoir subsurface datum, thickness, storage volume, 
fluid  content  and  location.    The  volumetric  method  is  most  applicable  to  reservoirs  which  are  not  susceptible  to  analysis  by  production 
performance or material balance methods.  These are most commonly newly developed and/or no-pressure depleting reservoirs.  The amount of 
hydrocarbons in-place that can be recovered is not an integral part of the volumetric calculations but is an estimate inferred by other methods and 
a knowledge of the nature of the reservoir.  Reserve estimates obtained by this method are generally considered to have a low degree of accuracy; 
but  the  degree  of  accuracy  can  be  relatively  high  where  rock  quality  and  subsurface  control  is  good  and  the  nature  of  the  reservoir  is 
uncomplicated. 

Analogy.  This method which employs experience and judgment to estimate reserves, is based on observations of similar situations and 
includes  consideration  of  theoretical  performance.    The  analogy  method  is  applicable  where  the  data  are  insufficient  or  so  inconclusive  that 
reliable  reserve  estimates  cannot  be  made  by  other  methods.    Reserve  estimates  obtained  by  this  method  are  generally  considered  to  have  a 
relatively low degree of accuracy.  

Much of the information used in the estimation of reserves is itself arrived at by the use of estimates.  These estimates are subject to 
continuing change as additional information becomes available.  Reserve estimates which presently appear to be correct may be found to contain 
substantial errors as time passes and new information is obtained about well and reservoir performance. 

Cawley, Gillespie & Associates, Inc. 

 Appendix 
Page 2 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
APPENDIX 

Reserve Definitions and Classifications 

The Securities and Exchange Commission, in SX Reg. 210.4-10 dated November 18, 1981, as amended on September 19, 1989 and 

January 1, 2010, requires adherence to the following definitions of oil and gas reserves: 

“(22) 

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  extract  the  hydrocarbons  must  have  commenced  or  the  operator  must  be 
reasonably certain that it will commence the project within a reasonable time. 

“(i) 

The area of a reservoir considered as proved includes: (A) The area identified by drilling and limited by fluid contacts, if any, 
and  (B)  Adjacent  undrilled  portions  of  the  reservoir  that  can,  with  reasonable  certainty,  be  judged  to  be  continuous  with  it  and  to  contain 
economically producible oil or gas on the basis of available geoscience and engineering data.  

“(ii) 

In  the  absence  of  data  on  fluid  contacts,  proved  quantities  in  a  reservoir  are  limited  by  the  lowest  known  hydrocarbons 
(LKH) as seen in a well penetration unless geoscience, engineering, or performance data and reliable technology establishes a lower contact with 
reasonable certainty. 

“(iii)  Where direct observation from well penetrations has defined a highest known oil (HKO) elevation and the potential exists 
for an associated gas cap, proved oil reserves may be assigned in the structurally higher portions of the reservoir only if geoscience, engineering, 
or performance data and reliable technology establish the higher contact with reasonable certainty. 

“(iv)  Reserves  which  can  be  produced  economically  through  application  of  improved  recovery  techniques  (including,  but  not 
limited to, fluid injection) are included in the proved classification when: (A) Successful testing by a pilot project in an area of the reservoir with 
properties no more favorable than in the reservoir as a whole, the operation of an installed program in the reservoir or an analogous reservoir, or 
other evidence using reliable technology establishes the reasonable certainty of the engineering analysis on which the project or program was 
based; and (B) The project has been approved for development by all necessary parties and entities, including governmental entities. 

“(v)  Existing economic conditions include prices and costs at which economic producibility from a reservoir is to be determined. 
The price shall be the average price during the 12-month period prior to the ending date of the period covered by the report, determined as an 
unweighted arithmetic average of the first-day-of-the-month price for each month within such period, unless prices are defined by contractual 
arrangements, excluding escalations based upon future conditions. 

“(6) 

Developed oil and gas reserves.  Developed oil and gas reserves are reserves of any category that can be expected to be 

recovered:  

“(i) 

Through existing  wells  with existing equipment and operating  methods or in which the cost of the  required equipment is 

relatively minor compared to the cost of a new well; and  

“(ii)  Through installed extraction equipment and infrastructure operational at the time of the reserves estimate if the extraction is 

by means not involving a well. 

“(31) 

Undeveloped oil and gas reserves.  Undeveloped oil and gas reserves are reserves of any category 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.  

“(i) 

Reserves  on  undrilled  acreage  shall  be  limited  to  those  directly  offsetting  development  spacing  areas  that  are  reasonably 
certain  of  production  when  drilled,  unless  evidence  using  reliable  technology  exists  that  establishes  reasonable  certainty  of  economic 
producibility at greater distances.  

“(ii)  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.  

“(iii)  Under no circumstances shall estimates for undeveloped reserves be attributable to any acreage for which an application of 
fluid injection or other improved recovery technique is contemplated, unless such techniques have been proved effective by actual projects in the 
same reservoir or an analogous reservoir, as defined in paragraph (a)(2) of this section, or by other evidence using reliable technology establishing   
reasonable certainty.

Cawley, Gillespie & Associates, Inc. 

 Appendix 
Page 3 

 
 
 
 
 
“(18) 

Probable  reserves.    Probable  reserves  are  those  additional  reserves  that  are  less  certain  to  be  recovered  than  proved 

reserves but which, together with proved reserves, are as likely as not to be recovered. 

“(i)  When deterministic methods are used, it is as likely as not that actual remaining quantities recovered will exceed the sum of 
estimated  proved  plus  probable  reserves.  When  probabilistic  methods  are  used,  there  should  be  at  least  a  50%  probability  that  the  actual 
quantities recovered will equal or exceed the proved plus probable reserves estimates.  

“(ii) 

Probable reserves may be assigned to areas of a reservoir adjacent to proved reserves where data control or interpretations of 
available  data  are  less  certain,  even  if  the  interpreted  reservoir  continuity  of  structure  or  productivity  does  not  meet  the  reasonable  certainty 
criterion. Probable reserves may be assigned to areas that are structurally higher than the proved area if these areas are in communication with the 
proved reservoir.  

“(iii)  Probable reserves estimates also include potential incremental quantities associated with a greater percentage recovery of the 

hydrocarbons in place than assumed for proved reserves.  

“(iv)  See also guidelines in paragraphs (17)(iv) and (17)(vi) of this section (below). 

“(17) 

Possible  reserves.    Possible  reserves  are  those  additional  reserves  that  are  less  certain  to  be  recovered  than  probable 

reserves. 

“(i)  When  deterministic  methods  are  used,  the  total  quantities  ultimately  recovered  from  a  project  have  a  low  probability  of 
exceeding proved plus probable plus possible reserves. When probabilistic methods are used, there should be at least a 10% probability that the 
total quantities ultimately recovered will equal or exceed the proved plus probable plus possible reserves estimates. 

“(ii) 

Possible reserves may be assigned to areas of a reservoir adjacent to probable reserves where data control and interpretations 
of  available  data  are  progressively  less  certain.  Frequently,  this  will  be  in  areas  where  geoscience  and  engineering  data  are  unable  to  define 
clearly the area and vertical limits of commercial production from the reservoir by a defined project. 

“(iii)  Possible reserves also include incremental quantities associated with a greater percentage recovery of the hydrocarbons in 

place than the recovery quantities assumed for probable reserves. 

“(iv)  The proved plus probable and proved plus probable plus possible reserves estimates must be based on reasonable alternative 
technical and commercial interpretations within the reservoir or subject project that are clearly documented, including comparisons to results in 
successful similar projects. 

“(v) 

Possible reserves may be assigned where geoscience and engineering data identify directly adjacent portions of a reservoir 
within  the  same  accumulation  that  may  be  separated  from  proved  areas  by  faults  with  displacement  less  than  formation  thickness  or  other 
geological  discontinuities  and  that  have  not  been  penetrated  by  a  wellbore,  and  the  registrant  believes  that  such  adjacent  portions  are  in 
communication  with  the  known  (proved)  reservoir.  Possible  reserves  may  be  assigned  to  areas  that  are  structurally  higher  or  lower  than  the 
proved area if these areas are in communication with the proved reservoir. 

“(vi)  Pursuant  to  paragraph  (22)(iii)  of  this  section  (above),  where  direct  observation  has  defined  a  highest  known  oil  (HKO) 
elevation  and  the  potential  exists  for  an  associated  gas  cap,  proved  oil  reserves  should  be  assigned  in  the  structurally  higher  portions  of  the 
reservoir  above  the  HKO  only  if  the  higher  contact  can  be  established  with  reasonable  certainty  through  reliable  technology.  Portions  of  the 
reservoir  that  do  not  meet  this  reasonable  certainty  criterion  may  be  assigned  as  probable  and  possible  oil  or  gas  based  on  reservoir  fluid 
properties and pressure gradient interpretations.” 

Instruction  4  of  Item  2(b)  of  Securities  and  Exchange  Commission  Regulation  S-K  was  revised  January  1,  2010  to  state  that  "a 
registrant  engaged  in  oil  and  gas  producing  activities  shall  provide  the  information  required  by  Subpart  1200  of  Regulation  S–K."    This  is 
relevant in that Instruction 2 to paragraph (a)(2) states: “The registrant is permitted, but not required, to disclose probable or possible reserves 
pursuant to paragraphs (a)(2)(iv) through (a)(2)(vii) of this Item.” 

“(26) 

Reserves.  Reserves are estimated remaining quantities of oil and gas and related substances anticipated to be economically 
producible, as of a given date, by application of development projects to known accumulations. In addition, there must exist, or there must be a 
reasonable expectation that there will exist, the legal right to produce or a revenue interest in the production, installed means of delivering oil and 
gas or related substances to market, and all permits and financing required to implement the project. 

“Note  to  paragraph  (26):  Reserves  should  not  be  assigned  to  adjacent  reservoirs  isolated  by  major,  potentially  sealing,  faults  until 
those reservoirs are penetrated and evaluated as economically producible. Reserves should not be assigned to areas that are clearly separated from 
a known accumulation by a non-productive reservoir (i.e., absence of reservoir, structurally low reservoir, or negative test results). Such areas 
may contain prospective resources (i.e., potentially recoverable resources from undiscovered accumulations).” 

Cawley, Gillespie & Associates, Inc. 

 Appendix 
Page 4 

 
 
 
 
Cawley, Gillespie & Associates, Inc. 

P E T R O L E U M   C O N S U L T A N T S  

1 3 6 4 0   B R I A R W I C K   D R I V E ,   S U I T E   1 0 0  

A U S T I N ,   T E X A S   7 8 7 2 9 - 1 7 0 7  

5 1 2 - 2 4 9 - 7 0 0 0  

    3 0 6   W E S T   S E V E N T H   S T R E E T ,   S U I T E   3 0 2  
      F O R T   W O R T H ,   T E X A S   7 6 1 0 2 - 4 9 8 7  
      8 1 7 - 3 3 6 - 2 4 6 1  
      w w w . c g a u s . c o m  

1 0 0 0   L O U I S I A N A   S T R E E T ,   S U I T E   6 2 5  

H O U S T O N ,   T E X A S   7 7 0 0 2 - 5 0 0 8  

7 1 3 - 6 5 1 - 9 9 4 4  

Professional Qualifications of Robert D. Ravnaas, P.E. 
President of Cawley, Gillespie & Associates 

Mr. Ravnaas has been a Petroleum Consultant for Cawley, Gillespie & Associates (CG&A) since 1983, and became 
President  in  2011.    He  has  completed  numerous  field  studies,  reserve  evaluations  and  reservoir  simulation, 
waterflood design and monitoring, unit equity determinations and producing rate studies.  He has testified before 
the Texas Railroad Commission in unitization and field rules hearings.  Prior to CG&A he worked as a Production 
Engineer  for  Amoco  Production  Company.    Mr.  Ravnaas  received  a  B.S.  with  special  honors  in  Chemical 
Engineering from the University of Colorado at Boulder, and a M.S. in Petroleum Engineering from the University 
of Texas at Austin.  He is a registered professional engineer in Texas, No. 61304, and a member of the Society of 
Petroleum  Engineers  (SPE),  the  Society  of  Petroleum  Evaluation  Engineers,  the  American  Association  of 
Petroleum Geologists and the Society of Professional Well Log Analysts. 

 
 
 
 
 
 
   
 
 
 
fp_Cover  3/15/13  2:44 PM  Page 2

the Bakken/Three Forks in the Williston Basin, we 

Financial and Operations Summary  . . . . . . . . . . . 2

Division, Whiting was the number one oil producer

Other Development Areas  . . . . . . . . . . . . . . . . . 12

in the United States.

Building for the Future  . . . . . . . . . . . . . . . . . . . . 16

We are a Bakken oil company. With a focus on 

generated record production of 30.21 MMBOE or

82,540 BOE per day in 2012. According to the 

December 2012 Oil and Gas Production Report 

published by the North Dakota State Industrial 

Commission, Department of Minerals, Oil and Gas

in North Dakota at 66,155.7 barrels per day. North

Dakota is the second largest oil producing state 

We were one of the first successful operators in the

Bakken/Three Forks Hydrocarbon System in the

Williston Basin with the discovery of our Sanish field

in early 2007. With our experience and expertise in

operating in the Williston Basin, we expect a very

good year for organic growth in reserves and production

in 2013. We expect to generate year-over-year 

production growth of between 12% and 16%. In the

Bakken and Three Forks hydrocarbon system in the

Williston Basin alone, we hold more than 700,000

net acres and continue to add to that position. 

Importantly, our average cost in this acreage is $521

per net acre.

ABBREVIATIONS

Bbl: One stock tank barrel, or 42 U.S. gallons liquid volume, used in

this report in reference to oil, NGLs and other liquid hydrocarbons.

Bcf: One billion cubic feet of natural gas.

BOE: One stock tank barrel equivalent of oil, calculated by 

converting natural gas volumes to equivalent oil barrels at a ratio 

of six Mcf to one Bbl of oil.

BOE/d: Barrels of oil equivalent per day.

Completion: The installation of permanent equipment for the 

production of crude oil or natural gas, or in the case of a dry

hole, the reporting of abandonment to the appropriate agency. 

EOR: Enhanced Oil Recovery is a tertiary recovery method in

which injectants, such as CO2, are introduced into a reservoir to

enhance hydrocarbon recovery.

MBOE: One thousand BOE.

Mcf: One thousand cubic feet of natural gas.

Mcfe: One thousand cubic feet of natural gas equivalent.

MMBbl: One million barrels.

MMBOE: One million BOE.

MMcf: One million cubic feet of natural gas.

MMcf/d: One million cubic feet of natural gas per day.

NGLs: Natural gas liquids.

PDP: Proved developed producing. 

PDNP: Proved developed nonproducing.

Corporate Overview . . . . . . . . . . . . . . . . . . . . . . . 1

Letter to the Shareholders  . . . . . . . . . . . . . . . . . . 4

Drilling and Operations Overview  . . . . . . . . . . . . 6

Williston Basin Oil Plays  . . . . . . . . . . . . . . . . . . . . 8

Optimization Programs  . . . . . . . . . . . . . . . . . . . 14

Board of Directors  . . . . . . . . . . . . . . . . . . . . . . . 20

Annual Report on Form 10-K  . . . . . . . . . . . . . . . 21

Corporate Investor Information

Inside back cover

RESERVE AND RESOURCE INFORMATION

Whiting uses in this annual report the terms proved, probable

and possible reserves. Proved reserves are reserves 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 under existing economic conditions, operating

methods and government regulations prior to the time at which

contracts providing the right to operate expire, unless eviden-

ceindicates that renewal is reasonably certain. Probable reserves are

reserves that are less certain to be recovered than proved reserves

but which, together with proved reserves, are as likely as not to be

recovered. Possible reserves are reserves that are less certain to be

recovered than probable reserves. Estimates of probable and possible

reserves which may potentially be recoverable through additional

drilling or recovery techniques are by nature more uncertain than

estimates of proved reserves and accordingly are subject to substan-

tially greater risk of not actually being realized by the Company.

Whiting uses in this annual report the term “total resources,”

which consists of contingent and prospective resources, which SEC

rules prohibit in filings of U.S. registrants. Contingent resources are

resources that are potentially recoverable but not yet considered

mature enough for commercial development due to technological

or business hurdles. For contingent resources to move into the 

reserves category, the key conditions, or contingencies, that pre-

vented commercial development must be clarified and removed.

Prospective resources are estimated volumes associated with undis-

covered accumulations. These represent quantities of petroleum

which are estimated to be potentially recoverable from oil and gas

deposits identified on the basis of indirect evidence but which 

have not yet been drilled. This class represents a higher risk than 

contingent resources since the risk of discovery is also added. For

prospective resources to become classified as contingent resources,

hydrocarbons must be discovered, the accumulations must be 

further evaluated and an estimate of quantities that would be 

recoverable under appropriate development projects prepared. 

Estimates of resources are by nature more uncertain than reserves

and accordingly are subject to substantially greater risk of not 

actually being realized by the Company.

FORWARD-LOOKING STATEMENTS

This  annual  report  contains  forward-looking  statements.  Please

refer  to  “Forward-Looking  Statements”  on  pages  70–71  of  the 

attached Annual Report on Form 10-K for an explanation of these

types of statements. These statements should be considered in light

of the “Risk Factors” set forth on page 22 of the attached Annual

PUD: Proved undeveloped. 

Report on Form 10-K. 

ABOUT THE COVER

CONTENTS

EXECUTIVE OFFICERS

OTHER OFFICERS

BOARD OF DIRECTORS

PETER W. HAGIST
Vice President, Permian Operations
for Whiting Oil and Gas Corporation

CHUCK LACOUTURE
Vice President, Marketing 
for Whiting Oil and Gas Corporation

MARK D. SONNENFELD
Vice President, Geoscience 
for Whiting Oil and Gas Corporation

                                                        DIRECTOR SINCE

JAMES J. VOLKER                           2003
Chairman of the Board 
and Chief Executive Officer

THOMAS L. ALLER *+                    2003
President
Interstate Power and 
Light Company,
an Alliant Energy Company

JOHN K. SOUTHWELL
Vice President, Permian Exploration 
for Whiting Oil and Gas Corporation

D. SHERWIN ARTUS^                    2006
Retired President and CEO
of Whiting

JAMES J.VOLKER
Chairman of the Board 
and Chief Executive Officer

JAMES T. BROWN
President and Chief Operating Officer

MARK R. WILLIAMS
Senior Vice President, Exploration 
and Development

MICHAEL J. STEVENS
Vice President and Chief Financial Officer

BRUCE R. DEBOER
Vice President, General Counsel 
and Corporate Secretary

J. DOUGLAS LANG
Vice President, Reservoir Engineering 
and Acquisitions

DAVID M. SEERY
Vice President, Land

RICK A. ROSS
Vice President, Operations

DOUGLAS L. WALTON
Vice President and 
National Drilling Manager 
for Whiting Oil and Gas Corporation

ERIC K. HAGEN
Vice President, Investor Relations

JACK R. EKSTROM
Vice President, 
Corporate and Government Relations

HEATHER M. DUNCAN
Vice President, Human Resources

GALE N. KEITHLINE
Vice President, Information Technology

BRENT P. JENSEN
Controller and Treasurer

CORPORATE OFFICES
Whiting Petroleum Corporation
1700 Broadway, Suite 2300
Denver, Colorado 80290-2300
Tel: (303) 837-1661 
Fax: (303) 861-4023
www.whiting.com

INVESTOR RELATIONS
Securities analysts, investors and the 
financial media should contact:
John B. Kelso
Director, Investor Relations
Tel: (303) 837-1661
Eric K. Hagen
Vice President, Investor Relations
Tel: (303) 837-1661

TRANSFER AGENT
Please direct communication regarding
individual stock records and address
changes to:
Computershare Trust Company, N.A.
350 Indiana Street, Suite 800
Golden, Colorado 80401
Tel: (303) 262-0600 
Fax: (303) 262-0700
www.computershare.com

INDEPENDENT 
PETROLEUM ENGINEERS
Cawley, Gillespie & Associates, Inc.

INDEPENDENT REGISTERED 
PUBLIC ACCOUNTING FIRM
Deloitte & Touche LLP

THOMAS P. BRIGGS*+(1)                2006
Inactive Certified 
Public Accountant

PHILIP E. DOTY*^                          2010
Certified Public Accountant

WILLIAM N. HAHNE +^                 2007
Past Chief Operating Officer
Petrohawk Energy

ALLAN R. LARSON^                       2011
Consulting Geologist

* Audit Committee
+ Compensation Committee
^ Nominating and Governance Committee
(1) Mr. Briggs’ term expires at the 2013 

annual meeting.

INFORMATION UPDATES
Whiting’s quarterly financial results and
other information are available on our
website at www.whiting.com

ANNUAL REPORT ON FORM 10-K
Upon request, the Company will 
provide, without charge, copies of the
2012 Annual Report on Form 10-K 
as filed with the Securities and 
Exchange Commission.

ANNUAL MEETING
Tuesday, May 7, 2013
10:00 A.M. (DENVER TIME)
The Grand Hyatt Hotel – Grand Ballroom
1750 Welton Street
Denver, Colorado 80202

STOCK EXCHANGE LISTING
New York Stock Exchange, trading 
symbol: WLL

fp_Cover  3/15/13  2:44 PM  Page 1

1700 Broadway, Suite 2300

Denver, Colorado 80290-2300

Tel: (303) 837-1661

Fax: (303) 861-4023

www.whiting.com

Whiting Petroleum Corporation

ANNUA L  REPORT 2012

YEA R  OF  RECORD  PRODUCTIO N