Quarterlytics / Energy / Oil & Gas Exploration & Production / Pioneer Natural Resources Company

Pioneer Natural Resources Company

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FY2016 Annual Report · Pioneer Natural Resources Company
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E X E C U T I N G

S T R A T E G Y

2 0 1 6   1 0 - K   a n d
A n n u a l   R e p o r t

D R I V I N G

R E S U L T S

O P E R AT I N G   A R E A S

COLORADO

RATON

WEST PANHANDLE

NORTHERN SPRABERRY/WOLFCAMP

TEXAS

SOUTHERN WOLFCAMP

EAGLE FORD SHALE

2016 COMMODITY MIX

Except for historical information contained herein, the statements in this document are forward-looking statements that are made pursuant to the Safe 
Harbor Provisions of the Private Securities Litigation Reform Act of 1995. Forward-looking statements and the business prospects of Pioneer Natural 
Resources Company are subject to a number of risks and uncertainties that may cause Pioneer’s actual results in future periods to differ materially from 
the forward-looking statements. These risks and uncertainties are described in Items 1, 1A, 7 and 7A and on page 5 of Pioneer’s Form 10-K included with 
this report.

“Drillbit finding and development cost per BOE” means the summation of exploration and development costs incurred divided by the summation
of annual proved reserves, on a BOE basis, attributable to discoveries and extensions (excludes purchases of minerals-in-place) and revisions of 
previous estimates. Revisions of previous estimates exclude price revisions. Consistent with industry practice, future capital costs to develop proved 
undeveloped reserves are not included in costs incurred.

Cautionary Note — The Securities and Exchange Commission (SEC) prohibits oil and gas companies, in their filings with the SEC, from disclosing 
estimates of oil or gas resources other than “reserves,” as that term is defined by the SEC. In this document, Pioneer includes estimates of quantities of 
oil and gas using certain terms, such as “estimated ultimate recovery,” or other descriptions of volumes of reserves, which terms include quantities of 
oil and gas that may not meet the SEC’s definitions of proved, probable and possible reserves, and which the SEC's guidelines strictly prohibit Pioneer 
from including in filings with the SEC. These estimates are by their nature more speculative than estimates of proved reserves and accordingly are
subject to substantially greater risk of being recovered by Pioneer. 

L E T T E R   T O   S H A R E H O L D E R S

In 2016, Pioneer 
delivered one of the 
best years in terms of 
performance in our 
20-year history.

TIMOTHY L. DOVE
PRESIDENT AND
CHIEF EXECUTIVE OFFICER

SCOTT D. SHEFFIELD
EXECUTIVE CHAIRMAN
OF THE BOARD

FELLOW SHAREHOLDERS

“Scott Sheffield guided Pioneer and its 

predecessor companies for over 30 years to build 

We are pleased to report that in 2016, Pioneer delivered one of the

one of the premier oil shale resource companies 

best years in terms of performance in our 20-year history. Despite

another year of an oversupplied global oil market, which resulted 

in continued downward pressure on oil prices, the Company’s 

focus on streamlining operations, improving capital efficiency and

maintaining a strong balance sheet allowed us to meet or exceed all

in the United States. He has been a visionary 

leader in the energy industry and is known 

for his well-timed strategic decisions, financial 

discipline and strong focus on execution. 

of our financial and operating goals. The key drivers of this strong 

Pioneer’s corporate culture is second to none 

performance were the continued success of Pioneer’s horizontal

drilling program in the world-class Spraberry/Wolfcamp shale play 

in the Permian Basin of West Texas and the outstanding efforts of 

thanks to Scott, and it shows in our people, 

assets, balance sheet and top-tier performance.”

our employees. 

Timothy L. Dove

Pioneer’s stock continued to be a leader in the energy sector 

price revisions of 58 MMBOE and acquisitions of 4 MMBOE),

during 2016 — we were the second best performing stock in our

replacing 232% of full-year 2016 production. These reserves were 

12-company E&P peer group and the 27th best performing stock 

added at a highly competitive drillbit finding and development cost 

in the S&P 500. Over the past five years, our stock was again the 

of $9.59 per barrel oil equivalent (BOE).

second best performer in our 12-company peer group and in the

top third of all S&P 500 companies.

The Company reduced production costs per BOE by 29% in 2016 

compared to 2015. The decrease was driven by cost reduction 

Total production grew by 15% during 2016 compared to 2015. Oil

initiatives and increasing volumes of low-cost, horizontal

production increased by 27% over this same period and represented

Spraberry/Wolfcamp production. Horizontal Spraberry/Wolfcamp 

57% of our total 2016 production. We added proved reserves

oil barrels are among the cheapest to produce in the world at a cost 

totaling 205 million barrels oil equivalent (MMBOE) in 2016 from 

of approximately $4.00 per BOE ($2.00 per BOE operating costs 

discoveries, extensions and technical revisions (excluding negative 

and $2.00 per BOE production taxes).

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2016 Annual Report 1

We also significantly improved our capital efficiency in the 

Spraberry/Wolfcamp during 2016 by reducing drilling and

completion costs and increasing well productivity. Despite utilizing 

higher-intensity and more expensive fracture stimulations, which 

combine longer laterals with optimized stage lengths, clusters per 

stage, fluid volumes and proppant concentrations, we decreased

drilling and completion costs per lateral foot by 25% from the

beginning of 2015 through the end of 2016. Estimated ultimate 

recoveries per well continued to increase during this period as a 

result of utilizing the higher-intensity fracture stimulations.      

Pioneer is focused on optimizing the development of the Spraberry/

Wolfcamp, which includes ensuring that certain infrastructure and 

services are available. These infrastructure and service additions 

include the construction of tank batteries and saltwater disposal 

facilities for horizontal wells, the build-out of a field-wide water 

distribution system, optimization of the Company’s sand mine in

Brady, Texas, construction of additional field and gas processing 

facilities and maintaining the Company’s pressure pumping and 

well services equipment.

In late 2015, the U.S. Congress and President Obama approved 

legislation to lift the ban on U.S. oil exports. Pioneer was a leading 

proponent to have the ban lifted. Since mid-2016, after gaining 

access to the facilities that allow us to physically deliver and store 

oil for export, we have sold cargoes to customers in Europe, Canada 

and Asia.

2017 OUTLOOK

The industry has been operating in a low oil price environment 

since late 2014, when North American oil prices began declining 

due to a worldwide oversupply of oil. During the fourth quarter

of 2016, members of the Organization of Petroleum Exporting 

Countries (OPEC) agreed to reduce their output by approximately 

1.2 million barrels per day, and certain oil-producing nations

outside of OPEC, including Russia, agreed to an additional

600,000-barrel reduction in production. These combined output 

reductions represent an unprecedented level of cooperation 

among oil-producing countries, and the announcement of the 

reductions has resulted in a nominal increase in oil prices. In 

2017, the worldwide supply of oil is expected to decline and, as a 

result, oil prices are expected to gradually increase as the supply 

reductions are realized and worldwide oil inventory levels decline.

Enforcement of the agreed production cuts will be monitored

closely, and we expect ongoing oil price volatility as compliance

with the output reduction agreement is reported and worldwide

inventory levels change.

As we enter 2017, we are well positioned in this environment 

to drill high-return wells, grow production and bring forward 

2

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the inherent net asset value associated with our world-class 

Spraberry/Wolfcamp asset. We are forecasting production 

growth in 2017 ranging from 15% to 18% compared to 2016. 

Spraberry/Wolfcamp production growth is expected to be the

primary contributor, with growth ranging from 30% to 34%

in 2017 compared to 2016. We are expecting internal rates of 

return for the 2017 drilling program ranging from 50% to 100%,

assuming an oil price of $55.00 per barrel and a gas price of 

$3.00 per thousand cubic feet (MCF). We are planning capital

expenditures for 2017 of $2.8 billion, which includes $2.5 billion

for drilling and completion activities and $275 million for water 

infrastructure, vertical integration and field facilities.

In the Eagle Ford Shale, we are planning a limited drilling 

program to test horizontal wells with longer lateral lengths and

higher-intensity fracture stimulations. Initiatives to control costs

and maximize production will continue in the Raton and West 

Panhandle areas.

STRONG FINANCIAL POSITION

Pioneer continues to maintain one of the best balance sheets in 

the industry. We had $3 billion of cash on hand (including liquid

investments) at the end of 2016, with net debt to 2016 operating 

cash flow of 0.2 times and net debt to book capitalization of 2%.

We protected 2016 cash flow and margins through attractive 

oil and gas derivatives positions that provided incremental cash

receipts of $680 million. We continued to be rated investment 

grade by Moody’s, S&P and Fitch in a year that saw many of the 

Company’s peers be downgraded below investment grade due to

weak credit metrics.

The 2017 capital program of $2.8 billion will be funded from

forecasted cash flow of $2.2 billion and cash on hand. Derivative

positions are in place that are expected to cover approximately 

85% of 2017 oil production and 55% of 2017 gas production.

Net debt to 2017 operating cash flow is expected to remain

below 1.0 times.   

TEN-YEAR VISION

Early this year, we established a long-term goal to grow 

production organically from 234 thousand barrels oil equivalent

(MBOEPD) in 2016 to approximately 1 MMBOEPD in 2026. 

We expect to achieve this vision by continuing to drill high-return 

wells that will deliver organic compound annual production 

growth of 15%+ and compound annual cash flow growth of 

approximately 20% over the 10-year period. This again assumes

an oil price of $55.00 per barrel and a gas price of $3.00 per MCF.

In addition, we expect to maintain our net debt to operating cash

flow ratio below 1.0 times and improve corporate returns. We also 

ANNUAL PRODUCTION 
FROM CONTINUING 
OPERATIONS

in MBOEPD

182

234

204

2014

2015

2016

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3

We are well positioned in this environment 

a diverse and inclusive workforce of team players with strong 

to drill high-return wells.

expect to spend within cash flow beginning in 2018 and generate 

free cash flow thereafter. Capital efficiency improvements are 

expected to continue and be driven in large part by innovation 

and technology gains. 

CONTINUED FOCUS ON SAFETY 
AND THE ENVIRONMENT

By continuing to focus on creating an incident- and injury-free

workplace during 2016, we were able to continue to reduce our

technical skills and a focus on success. In 2016, we were named

the best place to work among large companies in the Dallas/Fort

Worth area based on a survey of our employees conducted by 

The Dallas Morning News. This is the seventh year in a row that

Pioneer has been ranked in the top three. 

We want to personally express our appreciation to each and every 

person who works at Pioneer for the tremendous contributions

they made to our continuing strong performance in 2016. Our 

employees also give back in meaningful ways to the communities

where they work and live by volunteering their personal time

and resources. 

OSHA recordable incidents. Our upstream operations had zero

In closing, we have successfully managed through two years of 

employee lost-time incidents. We also developed and implemented 

low commodity prices by diligently focusing on reducing costs, 

a contractor safety program company-wide.  

improving well productivity and maintaining a strong balance 

Pioneer dedicates substantial resources to ensuring our operations 

are performed in a manner that protects the environment. During 

2016, this effort included completing voluntary leak detection

sheet. We are now well positioned to grow and improve corporate 

returns as we come out of the downturn.

and repair surveys across all production sites, reducing our 

reportable spills and reducing average overall spill volumes. The

Sincerely,

Company also signed an agreement with the City of Midland

to upgrade the City’s wastewater treatment plant in return for

two billion barrels of low-cost, non-potable water over a 28-

year period to support our completion operations. We regularly 

enhance corporate sustainability reporting on Pioneer’s website.

SCOTT D. SHEFFIELD
EXECUTIVE CHAIRMAN OF THE BOARD

We expect further improvements in 2017. Areas of continuing 

focus this year will be driving safety, contractor safety and 

methane emissions reductions.

OUR PEOPLE PROVIDE A COMPETITIVE 
ADVANTAGE

TIMOTHY L. DOVE
PRESIDENT AND CHIEF EXECUTIVE OFFICER

Having great assets isn’t enough. We have to execute day in and

day out. This would not happen without the commitment to 

excellence that is displayed by all of our people. We are building 

4

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L E A D E R S H I P

BBOOAARRDD OOFF DDIRECCTTOORRS
BOARD OF DIRECTORS

Scott D. Sheffield
Scott D  Sheffie d
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Edison C. Buchanan
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Andrew F. Cates
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Timothy L. Dove
Timmoothhy L. Dovve
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Phhillip A. GGobe 3,53 5
Phillip A. Gobe
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OFFICERS 
OFFICERS 

Timothy L. Dove
Timothy L. Dove
(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)
(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)(cid:3)(cid:68)(cid:81)(cid:71)
(cid:38)(cid:75)(cid:76)(cid:72)(cid:73)(cid:3)(cid:40)(cid:91)(cid:72)(cid:70)(cid:88)(cid:87)(cid:76)(cid:89)(cid:72)(cid:3)(cid:50)(cid:73)(cid:192)(cid:70)(cid:72)(cid:85)
(cid:38)(cid:75)(cid:76)(cid:72)(cid:73)(cid:3)(cid:40)(cid:91)(cid:72)(cid:70)(cid:88)(cid:87)(cid:76)(cid:89)(cid:72)(cid:3)(cid:50)(cid:73)(cid:192)(cid:70)(cid:72)(cid:85)

Mark S. Berg
Mark S. Berg
(cid:40)(cid:91)(cid:72)(cid:70)(cid:88)(cid:87)(cid:76)(cid:89)(cid:72)(cid:3)(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)(cid:3)
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(cid:38)(cid:82)(cid:85)(cid:83)(cid:82)(cid:85)(cid:68)(cid:87)(cid:72)(cid:18)(cid:50)(cid:83)(cid:72)(cid:85)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81)(cid:86)
(cid:38)(cid:82)(cid:85)(cid:83)(cid:82)(cid:85)(cid:68)(cid:87)(cid:72)(cid:18)(cid:50)(cid:83)(cid:72)(cid:85)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81)(cid:86)

Chris J. Cheatwood
Chris J. Cheatwood
(cid:40)(cid:91)(cid:72)(cid:70)(cid:88)(cid:87)(cid:76)(cid:89)(cid:72)(cid:3)(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)
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(cid:37)(cid:88)(cid:86)(cid:76)(cid:81)(cid:72)(cid:86)(cid:86)(cid:3)(cid:39)(cid:72)(cid:89)(cid:72)(cid:79)(cid:82)(cid:83)(cid:80)(cid:72)(cid:81)(cid:87)(cid:3)(cid:68)(cid:81)(cid:71)
(cid:37)(cid:88)(cid:86)(cid:76)(cid:81)(cid:72)(cid:86)(cid:86)(cid:3)(cid:39)(cid:72)(cid:89)(cid:72)(cid:79)(cid:82)(cid:83)(cid:80)(cid:72)(cid:81)(cid:87)(cid:3)(cid:68)(cid:81)(cid:71)
(cid:42)(cid:72)(cid:82)(cid:86)(cid:70)(cid:76)(cid:72)(cid:81)(cid:70)(cid:72)
(cid:42)(cid:72)(cid:82)(cid:86)(cid:70)(cid:76)(cid:72)(cid:81)(cid:70)(cid:72)

Richard P. Dealy
Richard P. Dealy
(cid:40)(cid:91)(cid:72)(cid:70)(cid:88)(cid:87)(cid:76)(cid:89)(cid:72)(cid:3)(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)(cid:3)
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(cid:68)(cid:81)(cid:71)(cid:3)(cid:38)(cid:75)(cid:76)(cid:72)(cid:73)(cid:3)(cid:41)(cid:76)(cid:81)(cid:68)(cid:81)(cid:70)(cid:76)(cid:68)(cid:79)(cid:3)(cid:50)(cid:73)(cid:192)(cid:70)(cid:72)(cid:85)

J. D. Hall
J. D. Hall
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(cid:40)(cid:91)(cid:72)(cid:70)(cid:88)(cid:87)(cid:76)(cid:89)(cid:72)(cid:3)(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)
(cid:51)(cid:72)(cid:85)(cid:80)(cid:76)(cid:68)(cid:81)(cid:3)(cid:50)(cid:83)(cid:72)(cid:85)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81)(cid:86)
(cid:51)(cid:72)(cid:85)(cid:80)(cid:76)(cid:68)(cid:81)(cid:3)(cid:50)(cid:83)(cid:72)(cid:85)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81)(cid:86)

Kenneth H. Sheffield, Jr.
Kenneth H. Sheffield, Jr.
(cid:40)(cid:91)(cid:72)(cid:70)(cid:88)(cid:87)(cid:76)(cid:89)(cid:72)(cid:3)(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)
(cid:40)(cid:91)(cid:72)(cid:70)(cid:88)(cid:87)(cid:76)(cid:89)(cid:72)(cid:3)(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)
(cid:54)(cid:55)(cid:36)(cid:55)(cid:15)(cid:3)(cid:58)(cid:36)(cid:55)(cid:3)(cid:9)(cid:3)(cid:38)(cid:82)(cid:85)(cid:83)(cid:82)(cid:85)(cid:68)(cid:87)(cid:72)(cid:3)
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(cid:40)(cid:81)(cid:74)(cid:76)(cid:81)(cid:72)(cid:72)(cid:85)(cid:76)(cid:81)(cid:74)

Larry R. Grillot 
Laarry RR. Grrillot 2,52 5
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(cid:38)(cid:38)(cid:82)(cid:79)(cid:79)(cid:72)(cid:74)(cid:74)(cid:72)(cid:3)(cid:82)(cid:73) (cid:40)(cid:68)(cid:68)(cid:85)(cid:87)(cid:87)(cid:75)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)(cid:40)(cid:40)(cid:81)(cid:72)(cid:85)(cid:74)(cid:74)(cid:92)
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Stacy P. Methvin
Staacyy PP. MMeethhvin 3,53,
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(cid:53)(cid:72)(cid:87)(cid:76)(cid:85)(cid:72)(cid:71)(cid:3)(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)
(cid:54)(cid:75)(cid:72)(cid:79)(cid:79)(cid:3)(cid:50)(cid:50)(cid:76)(cid:79)(cid:79)(cid:3)(cid:38)(cid:82)(cid:80)(cid:80)(cid:83)(cid:68)(cid:68)(cid:81)(cid:92)(cid:92)
(cid:54)(cid:75)(cid:72)(cid:79)(cid:79)(cid:3)(cid:50)(cid:76)(cid:79)(cid:3)(cid:38)(cid:82)(cid:80)(cid:83)(cid:68)(cid:81)(cid:92)

Royce W. Mitchell
Rooycce WW. MMittchhelll 2,52,5
(cid:40)(cid:91)(cid:72)(cid:70)(cid:88)(cid:87) (cid:89)(cid:72)(cid:72)(cid:3)(cid:38)(cid:82)(cid:81)(cid:86)(cid:88)(cid:79)(cid:87)(cid:68)(cid:68)(cid:81)(cid:87)
(cid:40)(cid:91)(cid:72)(cid:70)(cid:88)(cid:87)(cid:76)(cid:89)(cid:72)(cid:3)(cid:38)(cid:82)(cid:81)(cid:86)(cid:88)(cid:79)(cid:87)(cid:68)(cid:81)(cid:87)

Frank A. Risch
Frankk A. RRisch 2,44
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Mona K. Sutphen
Moonaa KK. SSutpheen 3,53,
(cid:51)(cid:68)(cid:85)(cid:87)(cid:81)(cid:72)(cid:85)
(cid:51)(cid:68)(cid:85)(cid:87)(cid:81)(cid:72)(cid:85)(cid:3)
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(cid:48)(cid:68)(cid:70)(cid:85)(cid:82)(cid:3)(cid:36)(cid:71)(cid:89)(cid:76)(cid:86)(cid:82)(cid:85)(cid:92)(cid:3)(cid:51)(cid:68)(cid:85)(cid:87)(cid:81)(cid:72)(cid:85)(cid:86)(cid:3)(cid:47)(cid:47)(cid:51)

J. Kenneth Thompson
J. Keennnetth Thhomppsoon 1,3,4
1 3,4
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(cid:51)(cid:68)(cid:70)(cid:76)(cid:192)(cid:70)(cid:70)(cid:3)(cid:54)(cid:87)(cid:68)(cid:85)(cid:3)(cid:40)(cid:40)(cid:81)(cid:72)(cid:72)(cid:85)(cid:74)(cid:74)(cid:92)(cid:3)(cid:47)(cid:47)(cid:38)
(cid:51)(cid:68)(cid:70)(cid:76)(cid:192)(cid:70)(cid:3)(cid:54)(cid:87)(cid:68)(cid:85)(cid:3)(cid:40)(cid:81)(cid:72)(cid:85)(cid:74)(cid:92)(cid:3)(cid:47)(cid:47)(cid:38)

Phoebe A. Wood
Phhoebe AA. WWoood 2,42,4
(cid:53)(cid:72)(cid:87)(cid:76)(cid:85)(cid:72)(cid:71)(cid:3)(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:38)(cid:75)(cid:68)(cid:76)(cid:85)(cid:80)(cid:68)(cid:81)(cid:3)(cid:68)(cid:81)(cid:71)
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(cid:37)(cid:85)(cid:82)(cid:90)(cid:81)(cid:16)(cid:41)(cid:82)(cid:85)(cid:80)(cid:68)(cid:81)(cid:3)(cid:38)(cid:82)(cid:85)(cid:83)(cid:82)(cid:85)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81)

Michael D. Wortley
Miichhaeel DD. WWorrtleey 2,42,4
(cid:38)(cid:75)(cid:76)(cid:72)(cid:73)(cid:3)(cid:47)(cid:72)(cid:74)(cid:68)(cid:79)(cid:3)(cid:50)(cid:73)(cid:192)(cid:70)(cid:72)(cid:85)(cid:3)
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CCOMMMITTTEE MEMBEERSSH P:
COMMITTEE MEMBERSHIP:

(cid:20)(cid:3)(cid:47)(cid:72)(cid:68)(cid:71)(cid:3)(cid:39)(cid:76)(cid:85)(cid:72)(cid:70)(cid:87)(cid:82)(cid:85)
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(cid:47)(cid:72)(cid:68)(cid:71)(cid:72)(cid:85)(cid:86)(cid:75)(cid:76)(cid:83)(cid:3)(cid:39)(cid:72)(cid:89)(cid:72)(cid:79)(cid:82)(cid:83)(cid:80)(cid:72)(cid:81)(cid:87)(cid:3)
(cid:38)(cid:82)(cid:80)(cid:80)(cid:80)(cid:80)(cid:76)(cid:87)(cid:87)(cid:72)(cid:72)
(cid:38)(cid:82)(cid:80)(cid:80)(cid:76)(cid:87)(cid:87)(cid:72)(cid:72)

44 (cid:49)(cid:82)(cid:80)(cid:76)(cid:81)(cid:68)(cid:87)(cid:76)(cid:81)(cid:74)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)(cid:38)(cid:82)(cid:85)(cid:83)(cid:82)(cid:85)(cid:68)(cid:87)(cid:72)(cid:3)
(cid:49)(cid:49)(cid:82)(cid:80)(cid:80)(cid:76)(cid:81)(cid:68)(cid:87)(cid:76)(cid:81)(cid:81)(cid:74)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)(cid:38)(cid:38)(cid:82)(cid:85)(cid:83)(cid:82)(cid:82)(cid:85)(cid:68)(cid:68)(cid:87)(cid:72)
(cid:42)(cid:82)(cid:89)(cid:72)(cid:85)(cid:81)(cid:68)(cid:81)(cid:70)(cid:72)(cid:3)(cid:38)(cid:82)(cid:80)(cid:80)(cid:76)(cid:87)(cid:87)(cid:72)(cid:72)(cid:72)
(cid:42)(cid:82)(cid:89)(cid:72)(cid:85)(cid:81)(cid:68)(cid:81)(cid:70)(cid:72)(cid:3)(cid:38)(cid:82)(cid:80)(cid:80)(cid:76)(cid:87)(cid:87)(cid:72)(cid:72)

55 (cid:43)(cid:72)(cid:68)(cid:79)(cid:87)(cid:75)(cid:15)(cid:3)(cid:54)(cid:68)(cid:73)(cid:72)(cid:87)(cid:92)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)
(cid:43)(cid:43)(cid:72)(cid:68)(cid:68)(cid:79)(cid:87)(cid:75)(cid:15)(cid:3)(cid:54)(cid:68)(cid:68)(cid:73)(cid:72)(cid:87)(cid:92)(cid:3)(cid:68)(cid:81)(cid:81)(cid:71)(cid:3)
(cid:40)(cid:81)(cid:89)(cid:76)(cid:85)(cid:82)(cid:82)(cid:81)(cid:80)(cid:80)(cid:72)(cid:81)(cid:87) (cid:38)(cid:82)(cid:80)(cid:80)(cid:80)(cid:76)(cid:87)(cid:87)(cid:72)(cid:72)
(cid:40)(cid:81)(cid:89)(cid:76)(cid:85)(cid:82)(cid:81)(cid:80)(cid:72)(cid:81)(cid:87)(cid:3)(cid:38)(cid:82)(cid:80)(cid:80)(cid:76)(cid:87)(cid:87)(cid:72)(cid:72)

William F. Hannes
William F. Hannes
(cid:54)(cid:72)(cid:81)(cid:76)(cid:82)(cid:85)(cid:3)(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)(cid:3)
(cid:54)(cid:72)(cid:81)(cid:76)(cid:82)(cid:85)(cid:3)(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)
(cid:54)(cid:83)(cid:72)(cid:70)(cid:76)(cid:68)(cid:79)(cid:3)(cid:51)(cid:85)(cid:82)(cid:77)(cid:72)(cid:70)(cid:87)(cid:86)
(cid:54)(cid:83)(cid:72)(cid:70)(cid:76)(cid:68)(cid:79)(cid:3)(cid:51)(cid:85)(cid:82)(cid:77)(cid:72)(cid:70)(cid:87)(cid:86)

Frank E. Hopkins
Frank E. Hopkins
(cid:54)(cid:72)(cid:81)(cid:76)(cid:82)(cid:85)(cid:3)(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)
(cid:54)(cid:72)(cid:81)(cid:76)(cid:82)(cid:85)(cid:3)(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)
(cid:44)(cid:81)(cid:89)(cid:72)(cid:86)(cid:87)(cid:82)(cid:85)(cid:3)(cid:53)(cid:72)(cid:79)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81)(cid:86)
(cid:44)(cid:81)(cid:89)(cid:72)(cid:86)(cid:87)(cid:82)(cid:85)(cid:3)(cid:53)(cid:72)(cid:79)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81)(cid:86)

Mark H. Kleinman
Mark H. Kleinman
(cid:54)(cid:72)(cid:81)(cid:76)(cid:82)(cid:85)(cid:3)(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)(cid:3)(cid:68)(cid:81)(cid:71)
(cid:54)(cid:72)(cid:81)(cid:76)(cid:82)(cid:85)(cid:3)(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)(cid:3)(cid:68)(cid:81)(cid:71)
(cid:42)(cid:72)(cid:81)(cid:72)(cid:85)(cid:68)(cid:79)(cid:3)(cid:38)(cid:82)(cid:88)(cid:81)(cid:86)(cid:72)(cid:79)
(cid:42)(cid:72)(cid:81)(cid:72)(cid:85)(cid:68)(cid:79)(cid:3)(cid:38)(cid:82)(cid:88)(cid:81)(cid:86)(cid:72)(cid:79)

Todd C. Abbott
Todd C. Abbott
(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)
(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)
(cid:51)(cid:72)(cid:85)(cid:80)(cid:76)(cid:68)(cid:81)(cid:3)(cid:44)(cid:81)(cid:73)(cid:85)(cid:68)(cid:86)(cid:87)(cid:85)(cid:88)(cid:70)(cid:87)(cid:88)(cid:85)(cid:72)
(cid:51)(cid:72)(cid:85)(cid:80)(cid:76)(cid:68)(cid:81)(cid:3)(cid:44)(cid:81)(cid:73)(cid:85)(cid:68)(cid:86)(cid:87)(cid:85)(cid:88)(cid:70)(cid:87)(cid:88)(cid:85)(cid:72)
(cid:39)(cid:72)(cid:89)(cid:72)(cid:79)(cid:82)(cid:83)(cid:80)(cid:72)(cid:81)(cid:87)(cid:3)(cid:68)(cid:81)(cid:71)
(cid:39)(cid:72)(cid:89)(cid:72)(cid:79)(cid:82)(cid:83)(cid:80)(cid:72)(cid:81)(cid:87)(cid:3)(cid:68)(cid:81)(cid:71)
(cid:50)(cid:83)(cid:72)(cid:85)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81)(cid:86)
(cid:50)(cid:83)(cid:72)(cid:85)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81)(cid:86)

John C. Distaso
John C. Distaso
(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)(cid:3)
(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)(cid:3)
(cid:48)(cid:68)(cid:85)(cid:78)(cid:72)(cid:87)(cid:76)(cid:81)(cid:74)
(cid:48)(cid:68)(cid:85)(cid:78)(cid:72)(cid:87)(cid:76)(cid:81)(cid:74)

Teresa A. Fairbrook
Teresa A. Fairbrook
(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)(cid:38)(cid:75)(cid:76)(cid:72)(cid:73)(cid:3)
(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)(cid:38)(cid:75)(cid:76)(cid:72)(cid:73)
(cid:43)(cid:88)(cid:80)(cid:68)(cid:81)(cid:3)(cid:53)(cid:72)(cid:86)(cid:82)(cid:88)(cid:85)(cid:70)(cid:72)(cid:86)(cid:3)(cid:50)(cid:73)(cid:192)(cid:70)(cid:72)(cid:85)
(cid:43)(cid:88)(cid:80)(cid:68)(cid:81)(cid:3)(cid:53)(cid:72)(cid:86)(cid:82)(cid:88)(cid:85)(cid:70)(cid:72)(cid:86)(cid:3)(cid:50)(cid:73)(cid:192)(cid:70)(cid:72)(cid:85)

Robert C. Hagens
Robert C. Hagens
(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)(cid:3)
(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)(cid:3)
(cid:47)(cid:68)(cid:81)(cid:71)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)(cid:53)(cid:72)(cid:74)(cid:88)(cid:79)(cid:68)(cid:87)(cid:82)(cid:85)(cid:92)(cid:3)(cid:36)(cid:73)(cid:73)(cid:68)(cid:76)(cid:85)(cid:86)
(cid:47)(cid:68)(cid:81)(cid:71)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)(cid:53)(cid:72)(cid:74)(cid:88)(cid:79)(cid:68)(cid:87)(cid:82)(cid:85)(cid:92)(cid:3)(cid:36)(cid:73)(cid:73)(cid:68)(cid:76)(cid:85)(cid:86)

Paul McDonald
Paul McDonald
(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)
(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)
(cid:57)(cid:72)(cid:85)(cid:87)(cid:76)(cid:70)(cid:68)(cid:79)(cid:79)(cid:92)(cid:3)(cid:44)(cid:81)(cid:87)(cid:72)(cid:74)(cid:85)(cid:68)(cid:87)(cid:72)(cid:71)(cid:3)
(cid:57)(cid:72)(cid:85)(cid:87)(cid:76)(cid:70)(cid:68)(cid:79)(cid:79)(cid:92)(cid:3)(cid:44)(cid:81)(cid:87)(cid:72)(cid:74)(cid:85)(cid:68)(cid:87)(cid:72)(cid:71)(cid:3)
(cid:54)(cid:72)(cid:85)(cid:89)(cid:76)(cid:70)(cid:72)(cid:86)
(cid:54)(cid:72)(cid:85)(cid:89)(cid:76)(cid:70)(cid:72)(cid:86)

Thomas D. Sheffield
Thomas D. Sheffield
(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)
(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)
(cid:43)(cid:72)(cid:68)(cid:79)(cid:87)(cid:75)(cid:15)(cid:3)(cid:54)(cid:68)(cid:73)(cid:72)(cid:87)(cid:92)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)
(cid:43)(cid:72)(cid:68)(cid:79)(cid:87)(cid:75)(cid:15)(cid:3)(cid:54)(cid:68)(cid:73)(cid:72)(cid:87)(cid:92)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)
(cid:40)(cid:81)(cid:89)(cid:76)(cid:85)(cid:82)(cid:81)(cid:80)(cid:72)(cid:81)(cid:87)
(cid:40)(cid:81)(cid:89)(cid:76)(cid:85)(cid:82)(cid:81)(cid:80)(cid:72)(cid:81)(cid:87)

Tom D. Spalding
Tom D. Spalding
(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)
(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)
(cid:42)(cid:72)(cid:82)(cid:86)(cid:70)(cid:76)(cid:72)(cid:81)(cid:70)(cid:72)
(cid:42)(cid:72)(cid:82)(cid:86)(cid:70)(cid:76)(cid:72)(cid:81)(cid:70)(cid:72)

Susan A. Spratlen
Susan A. Spratlen
(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)
(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)
(cid:51)(cid:72)(cid:85)(cid:80)(cid:76)(cid:68)(cid:81)(cid:3)(cid:36)(cid:73)(cid:73)(cid:68)(cid:76)(cid:85)(cid:86)
(cid:51)(cid:72)(cid:85)(cid:80)(cid:76)(cid:68)(cid:81)(cid:3)(cid:36)(cid:73)(cid:73)(cid:68)(cid:76)(cid:85)(cid:86)

Margaret M. Montemayor
Margaret M. Montemayor
(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)(cid:3)(cid:68)(cid:81)(cid:71)
(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)(cid:3)(cid:68)(cid:81)(cid:71)
(cid:38)(cid:75)(cid:76)(cid:72)(cid:73)(cid:3)(cid:36)(cid:70)(cid:70)(cid:82)(cid:88)(cid:81)(cid:87)(cid:76)(cid:81)(cid:74)(cid:3)(cid:50)(cid:73)(cid:192)(cid:70)(cid:72)(cid:85)
(cid:38)(cid:75)(cid:76)(cid:72)(cid:73)(cid:3)(cid:36)(cid:70)(cid:70)(cid:82)(cid:88)(cid:81)(cid:87)(cid:76)(cid:81)(cid:74)(cid:3)(cid:50)(cid:73)(cid:192)(cid:70)(cid:72)(cid:85)

Stephanie D. Stewart
Stephanie D. Stewart
(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)(cid:3)(cid:68)(cid:81)(cid:71)
(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)(cid:3)(cid:68)(cid:81)(cid:71)
(cid:38)(cid:75)(cid:76)(cid:72)(cid:73)(cid:3)(cid:44)(cid:81)(cid:73)(cid:82)(cid:85)(cid:80)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81)(cid:3)(cid:50)(cid:73)(cid:192)(cid:70)(cid:72)(cid:85)
(cid:38)(cid:75)(cid:76)(cid:72)(cid:73)(cid:3)(cid:44)(cid:81)(cid:73)(cid:82)(cid:85)(cid:80)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81)(cid:3)(cid:50)(cid:73)(cid:192)(cid:70)(cid:72)(cid:85)

Thaddeus J. Owens
Thaddeus J. Owens
(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)
(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)
(cid:38)(cid:82)(cid:80)(cid:80)(cid:88)(cid:81)(cid:76)(cid:70)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81)(cid:86)(cid:3)(cid:68)(cid:81)(cid:71)
(cid:38)(cid:82)(cid:80)(cid:80)(cid:88)(cid:81)(cid:76)(cid:70)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81)(cid:86)(cid:3)(cid:68)(cid:81)(cid:71)
(cid:42)(cid:82)(cid:89)(cid:72)(cid:85)(cid:81)(cid:80)(cid:72)(cid:81)(cid:87)(cid:3)(cid:53)(cid:72)(cid:79)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81)(cid:86)
(cid:42)(cid:82)(cid:89)(cid:72)(cid:85)(cid:81)(cid:80)(cid:72)(cid:81)(cid:87)(cid:3)(cid:53)(cid:72)(cid:79)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81)(cid:86)

Thomas J. Murphy
Thomas J. Murphy
(cid:38)(cid:82)(cid:85)(cid:83)(cid:82)(cid:85)(cid:68)(cid:87)(cid:72)(cid:3)(cid:54)(cid:72)(cid:70)(cid:85)(cid:72)(cid:87)(cid:68)(cid:85)(cid:92)
(cid:38)(cid:82)(cid:85)(cid:83)(cid:82)(cid:85)(cid:68)(cid:87)(cid:72)(cid:3)(cid:54)(cid:72)(cid:70)(cid:85)(cid:72)(cid:87)(cid:68)(cid:85)(cid:92)

(cid:21)(cid:19)(cid:20)(cid:25)(cid:3)(cid:36)(cid:81)(cid:81)(cid:88)(cid:68)(cid:79)(cid:3)(cid:53)(cid:72)(cid:83)(cid:82)(cid:85)(cid:87) 5

S T O C K   P E R F O R M A N C E

The information included in the remainder of this document, including this Stock Performance section of the 2016 Annual Report,

is not a part of Pioneer’s Annual Report on Form 10-K for the fiscal year ended December 31, 2016, and shall not be deemed to be 

“soliciting material” or to be “filed” with the Securities and Exchange Commission. Such information shall 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 

that Pioneer specifically incorporates such information.

The graph below matches Pioneer Natural Resources Company’s five-year cumulative total shareholder return on common stock with 

the cumulative total returns of the S&P 500 Index and the S&P Oil & Gas Exploration & Production Index. The graph tracks the 

performance of a $100 investment in our common stock and in each index (with the reinvestment of all dividends) from 12/31/2011 to

12/31/2016.

COMPARISON OF FIVE-YEAR CUMULATIVE TOTAL RETURNNRNURTUETRAL TAOTTOE TVETIVATLAUMUMCR AYE-YVEIVFOF ON OSORIAMPMOC
(cid:36)(cid:80)(cid:36)
(cid:81)(cid:71)
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(cid:87)(cid:75)(cid:71)(cid:3)(cid:87)

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0250$2
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0200$2$
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010$1
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20
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6

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E X E C U T I N G

S T R A T E G Y

2 0 1 6   F o r m   1 0 - K

D R I V I N G

R E S U L T S

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

FORM 10-K

ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT
OF 1934
For the fiscal year ended December 31, 2016 

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: 1-13245

Pioneer Natural Resources Company

(Exact name of registrant as specified in its charter)

Delaware
(State or other jurisdiction of
incorporation or organization)

5205 N. O'Connor Blvd., Suite 200, Irving, Texas
(Address of principal executive offices)

75-2702753
(I.R.S. Employer
Identification No.)

75039
(Zip Code)

Registrant's telephone number, including area code: (972) 444-9001

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

Title of each class
Common Stock, par value $.01

Name of each exchange on which registered
New York Stock Exchange

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

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

    No  

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

    No  

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 
during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing 
requirements for the past 90 days.    Yes  

    No  

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File 
required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such 
shorter period that the registrant was required to submit and post such files).    Yes  

    No  

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§229.405 of this chapter) is not contained herein, and 
will not be contained, to the best of registrant's knowledge, in definitive proxy or information statements incorporated by reference in Part III of this 
Form 10-K or any amendment to this Form 10-K.    

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer 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.

Large accelerated filer

Accelerated filer

Non-accelerated filer

  (Do not check if a smaller reporting company)

Smaller reporting company

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

     No   

Aggregate market value of the voting and non-voting common equity held by non-affiliates computed by
reference to the price at which the common equity was last sold, or the average bid and asked price of such
common equity, as of the last business day of the registrant's most recently completed second fiscal quarter $ 25,469,484,123

Number of shares of Common Stock outstanding as of February 13, 2017

169,796,963

DOCUMENTS INCORPORATED BY REFERENCE:
(1)  Portions of the Definitive Proxy Statement for the Company's Annual Meeting of Shareholders to be held during May 2017 are incorporated into 

Part III of this report.

 
 
 
 
 
 
 
 
 
 
 
  
  
TABLE OF CONTENTS

Definitions of Certain Terms and Conventions Used Herein
Cautionary Statement Concerning Forward-Looking Statements

PART I

Item 1.

Business
General
Available Information
Mission and Strategies
Business Activities
Marketing of Production
Competition, Markets and Regulations

Item 1A. Risk Factors
Item 1B. Unresolved Staff Comments
Item 2.

Properties

Reserve Estimation Procedures and Audits
Proved Reserves
Description of Properties
Selected Oil and Gas Information

Item 3.
Item 4. Mine Safety Disclosures

Legal Proceedings

Executive Officers of the Registrant

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

Securities

Purchases of Equity Securities by the Issuer and Affiliated Purchasers

Item 6.
Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations

Selected Financial Data

PART II

Financial and Operating Performance
First Quarter 2017 Outlook
2017 Capital Budget
Acquisitions
Divestitures and Discontinued Operations
Results of Operations
Capital Commitments, Capital Resources and Liquidity
Critical Accounting Estimates
New Accounting Pronouncements

Item 7A. Quantitative and Qualitative Disclosures About Market Risk

Quantitative Disclosures
Qualitative Disclosures

Item 8.

Financial Statements and Supplementary Data
Index to Consolidated Financial Statements
Report of Independent Registered Public Accounting Firm
Consolidated Financial Statements
Notes to Consolidated Financial Statements
Unaudited Supplementary Information

Item 9.
Item 9A. Controls and Procedures

Changes in and Disagreements With Accountants on Accounting and Financial Disclosure

Management's Report on Internal Control Over Financial Reporting
Report of Independent Registered Public Accounting Firm

Item 9B. Other Information

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TABLE OF CONTENTS

PART III
Item 10. Directors, Executive Officers and Corporate Governance
Item 11. Executive Compensation
Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

Securities Authorized for Issuance Under Equity Compensation Plans

Item 13. Certain Relationships and Related Transactions, and Director Independence
Item 14. Principal Accounting Fees and Services

PART IV

Item 15. Exhibits, Financial Statement Schedules
Item 16. 10-K Summary

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Definitions of Certain Terms and Conventions Used Herein

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Within this Report, the following terms and conventions have specific meanings:

"Bbl" means a standard barrel containing 42 United States gallons.

"Bcf" means one billion cubic feet.

"BOE" means a barrel of oil equivalent and is a standard convention used to express oil and gas volumes on a comparable 
oil equivalent basis. Gas equivalents are determined under the relative energy content method by using the ratio of six 
thousand cubic feet of gas to one Bbl of oil or natural gas liquid.

"BOEPD" means BOE per day.

"Btu" means British thermal unit, which is a measure of the amount of energy required to raise the temperature of one 
pound of water one degree Fahrenheit.

"CBM" means coal bed methane.

"Conway" means the daily average natural gas liquids components as priced in Oil Price Information Services ("OPIS")
in the table "U.S. and Canada LP – Gas Weekly Averages" at Conway, Kansas.

"DD&A" means depletion, depreciation and amortization.

"Field fuel" means gas consumed to operate field equipment (primarily compressors) prior to the gas being delivered to a 
sales point.

"GAAP" means accounting principles that are generally accepted in the United States of America.

"LIBOR" means London Interbank Offered Rate, which is a market rate of interest.

"MBbl" means one thousand Bbls.

"MBOE" means one thousand BOEs.

"Mcf" means one thousand cubic feet and is a measure of gas volume.

"MMBbl" means one million Bbls.

"MMBOE" means one million BOEs.

"MMBtu" means one million Btus.

"MMcf" means one million cubic feet.

"Mont Belvieu" means the daily average natural gas liquids components as priced in OPIS in the table "U.S. and Canada 
LP – Gas Weekly Averages" at Mont Belvieu, Texas.

"NGL" means natural gas liquid.

"NYMEX" means the New York Mercantile Exchange.

"NYSE" means the New York Stock Exchange.

"Pioneer" or the "Company" means Pioneer Natural Resources Company and its subsidiaries.

"Proved developed reserves" mean 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" mean those quantities of oil and gas, which, by analysis of geosciences 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 the 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 

4

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 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.

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"Proved undeveloped reserves" means 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.

(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 proved 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 proved 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, or by other evidence using reliable technology 
establishing reasonable certainty.

"SEC" means the United States Securities and Exchange Commission.

"Standardized Measure" means the after-tax present value of estimated future net cash flows of proved reserves, determined 
in accordance with the rules and regulations of the SEC, using prices and costs employed in the determination of proved 
reserves and a ten percent discount rate.

"U.S." means United States.

"WTI" means West Texas intermediate, a light, sweet blend of oil produced from fields in western Texas.

With respect to information on the working interest in wells, drilling locations and acreage, "net" wells, drilling locations 
and acres are determined by multiplying "gross" wells, drilling locations and acres by the Company's working interest in 
such wells, drilling locations or acres. Unless otherwise specified, wells, drilling locations and acreage statistics quoted 
herein represent gross wells, drilling locations or acres.

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Unless otherwise indicated, all currency amounts are expressed in U.S. dollars.

CAUTIONARY STATEMENT CONCERNING FORWARD-LOOKING STATEMENTS

This Annual Report on Form 10-K (this "Report") contains forward-looking statements that involve risks and uncertainties. 
When used in this document, the words "believes," "plans," "expects," "anticipates," "forecasts," "intends," "continue," "may," 
"will," "could," "should," "future," "potential," "estimate," or the negative of such terms and similar expressions as they relate to 
the Company are intended to identify forward-looking statements, which are generally not historical in nature. The forward-
looking statements are based on the Company's current expectations, assumptions, estimates and projections about the Company 
and the industry in which the Company operates. Although the Company believes that the expectations and assumptions reflected 
in the forward-looking statements are reasonable as and when made, they involve risks and uncertainties that are difficult to 
predict and, in many cases, beyond the Company's control. In addition, the Company may be subject to currently unforeseen risks 
that may have a materially adverse effect on it. Accordingly, no assurances can be given that the actual events and results will 
not be materially different from the anticipated results described in the forward-looking statements. See "Item 1. Business — 
Competition, Markets and Regulations," "Item 1A. Risk Factors," "Item 7. Management's Discussion and Analysis of Financial 
Condition and Results of Operations" and "Item 7A. Quantitative and Qualitative Disclosures About Market Risk" for a description 
of various factors that could materially affect the ability of Pioneer to achieve the anticipated results described in the forward-
looking statements. Readers are cautioned not to place undue reliance on forward-looking statements, which speak only as of the 
date hereof. The Company undertakes no duty to publicly update these statements except as required by law.

5

PIONEER NATURAL RESOURCES COMPANY

PART I

ITEM 1.

BUSINESS

General

Pioneer, a Delaware corporation formed in 1997, is a large independent oil and gas exploration and production company 
that explores for, develops and produces oil, NGLs and gas within the United States. The Company's common stock has been 
listed and traded on the NYSE under the ticker symbol "PXD" since its formation in 1997.

The  Company's  principal  executive  office  is  located  at  5205  N.  O'Connor  Blvd.,  Suite  200,  Irving, Texas  75039. The 

Company also maintains an office in Midland, Texas and field offices in its areas of operation. 

At December 31, 2016, Pioneer had 3,604 employees, 1,343 of whom were employed in field and plant operations and 947 

of whom were employed in vertical integration activities.

Available Information

Pioneer files or furnishes annual, quarterly and current reports, proxy statements and other documents with the SEC under 
the Securities Exchange Act of 1934 (the "Exchange Act"). The public may read and copy any materials that Pioneer files with 
the SEC at the SEC's Public Reference Room at 100 F Street, N.E., Washington, D.C. 20549. The public may obtain information 
on the operation of the Public Reference Room by calling the SEC at 1-800-SEC-0330. Also, the SEC maintains an Internet website 
that  contains  reports,  proxy  and  information  statements,  and  other  information  regarding  issuers,  including  Pioneer,  that  file 
electronically with the SEC. The public can obtain any documents that Pioneer files with the SEC at http://www.sec.gov.

The Company also makes available free of charge through its Internet website (www.pxd.com) its Annual Reports on Form 
10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K and, if applicable, amendments to those reports filed or 
furnished pursuant to Section 13(a) of the Exchange Act as soon as reasonably practicable after it electronically files such material 
with, or furnishes it to, the SEC. In addition to the reports filed or furnished with the SEC, Pioneer publicly discloses information 
from time to time in its press releases, investor presentations posted on its website and in publicly accessible conferences. Such 
information, including information posted on or connected to the Company's website, is not a part of, or incorporated by reference 
in, this Report or any other document the Company files with or furnishes to the SEC.

Mission and Strategies

The Company's mission is to be America's leading independent energy company, focused on value, safety, the environment, 
technology and our greatest asset, our people.  The Company's long-term growth strategy is centered around the following strategic 
objectives:

•  maintaining a strong balance sheet to ensure financial flexibility; 
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delivering economic production and reserve growth; 
enhancing drilling, completion and production activities by utilizing the Company's scale and technology advancements 
to reduce costs and improve efficiency; and 
developing and training employees and contractors to perform their jobs in a safe manner, combined with environmental 
stewardship through industry-leading sustainable development efforts. 

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These strategies are primarily anchored by the Company's interests in the long-lived Spraberry/Wolfcamp oil field located 
in West Texas, which has an estimated remaining productive life in excess of 40 years. Underlying the Spraberry/Wolfcamp field 
is over 75 percent of the Company's total proved oil and gas reserves as of December 31, 2016. Complementing this growth area, 
the Company has oil and gas production activities and development and exploration opportunities in the following areas:

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the liquid-rich Eagle Ford Shale play located in South Texas;
the Raton gas field located in southern Colorado;
the West Panhandle gas and liquids field located in the Texas Panhandle; and
the Edwards gas field located in South Texas.

Business Activities

Pioneer's purpose is to competitively and profitably explore for, develop and produce oil and gas reserves. In so doing, the 
Company sells homogeneous oil, NGL and gas units that, except for geographic and relatively minor quality differences, cannot 
be significantly differentiated from units offered for sale by the Company's competitors. The Company's portfolio of resources 

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PIONEER NATURAL RESOURCES COMPANY

and opportunities are diversified among oil, NGL and gas, and are well balanced among long-lived, dependable production and 
lower-risk exploration and development opportunities. 

Petroleum industry. The industry has been operating in a low oil price environment since late 2014, when North American 
oil prices began declining due to a worldwide oversupply of oil. During the fourth quarter of 2016, members of the Organization 
of Petroleum Exporting Countries ("OPEC") agreed to reduce their output by approximately 1.2 million BOEPD and certain oil-
producing nations outside of OPEC, including Russia, agreed to an additional 600,000 BOEPD reduction in production. These 
combined output reductions represent an unprecedented level of cooperation among oil-producing countries and the announcement 
of the reductions has resulted in a nominal increase in oil prices. In 2017, the worldwide supply of oil is expected to decline and, 
as a result, oil prices are expected to gradually increase as the supply reductions are realized and worldwide oil inventory levels 
decline. Enforcement of the agreed production cuts will be monitored closely, and the Company expects ongoing oil price volatility 
as compliance with the output reduction agreement is reported. 

The growth of unconventional shale drilling in the United States has substantially increased the supply of gas and NGLs, 
resulting in a significant decline in related prices as the supply of these products has grown. While the industry has invested in 
initiatives designed to increase takeaway capacity, such as the construction of liquefied natural gas ("LNG") and NGL export 
facilities, the supply of these products has exceeded the overall United States and international demand for these commodities.  
NGL products and gas supplies are expected to remain at consistent levels during 2017, which is expected to keep prices relatively 
flat during 2017.

Significant factors that are likely to affect 2017 commodity prices include: the effect of new policies enacted by a new 
President of the United States and his administration; fiscal challenges facing the United States federal government; potential 
changes to the tax laws in the United States; continuing economic struggles in European and Asian nations; political and economic 
developments in North Africa and the Middle East; demand from Asian and European markets; the extent to which members of 
OPEC and other oil exporting nations adhere to and agree to extend the agreed oil production cuts, which expire in June 2017; 
the supply and demand fundamentals for NGLs in the United States and the pace at which export capacity grows; and overall 
North American gas supply and demand fundamentals, including incremental LNG export capacity additions and the pace that 
gas storage is refilled during the year given that gas storage levels are anticipated to be normal at the end of the winter draw season.

Pioneer uses commodity derivative contracts to mitigate the effect of commodity price volatility on the Company's net cash 
provided by operating activities and its net asset value. The Company has entered into commodity derivative contracts for a large 
portion of its forecasted production through 2017; however, commodity prices are volatile and if commodity prices decline, the 
Company could realize lower prices for unprotected volumes and could see a reduction in the prices at which the Company is able 
to  enter  into  derivative  contracts  on  additional  volumes  in  the  future. As  a  result,  the  Company's  internal  cash  flows  will  be 
negatively impacted by a reduction in commodity prices. See "Item 7A. Quantitative and Qualitative Disclosures About Market 
Risk" and Note E of Notes to Consolidated Financial Statements included in "Item 8. Financial Statements and Supplementary 
Data" for information regarding the Company's open derivative positions as of December 31, 2016, and subsequent changes to 
these positions.

Liquidity. In spite of the current commodity price environment, the Company has maintained a strong liquidity position. 
The Company's primary needs for cash are for capital expenditures and acquisition expenditures on oil and gas properties and 
related vertical integration assets and facilities, payments of contractual obligations, including debt maturities, dividends and 
working capital obligations. Principal sources of liquidity include cash and cash equivalents, short-term and long-term investment 
securities, net cash provided by operating activities, proceeds from divestitures and proceeds from financing activities (principally 
borrowings under the Company's credit facility or issuances of debt or equity securities). If internal cash flows do not meet the 
Company's expectations, the Company may reduce its level of capital expenditures, and/or fund a portion of its capital expenditures 
(i) by using cash on hand, (ii) through sales of short-term and long-term investments, (iii) with borrowings under the Company's 
credit facility, (iv) through issuances of debt or equity securities or (v) through other sources, such as sales of nonstrategic assets.

Production. The Company focuses its efforts towards maximizing its average daily production of oil, NGLs and gas through 
development drilling, production enhancement activities and acquisitions of producing properties, while minimizing controllable 
costs associated with production activities. For the year ended December 31, 2016, the Company's production from continuing 
operations of 86 MMBOE, excluding field fuel usage, represented a 15 percent increase compared to production from continuing 
operations during 2015. Production, price and cost information with respect to the Company's properties for 2016, 2015 and 2014
is set forth in "Item 2. Properties — Selected Oil and Gas Information — Production, price and cost data."

Acquisition  activities.  The  Company  regularly  seeks  to  acquire  properties  that  complement  its  operations,  provide 
exploration and development opportunities and potentially provide superior returns on investment. In addition, the Company may 
pursue strategic acquisitions that will allow the Company to expand into new geographical areas that provide future exploitation 
and exploration opportunities. The Company periodically evaluates and pursues acquisition opportunities (including opportunities 

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PIONEER NATURAL RESOURCES COMPANY

to acquire particular oil and gas assets or entities owning oil and gas assets and opportunities to engage in mergers, consolidations 
or other business combinations with such entities) and at any given time may be in various stages of evaluating such opportunities. 
Such  stages  may  take  the  form  of  internal  financial  analyses,  oil  and  gas  reserve  analyses,  due  diligence,  the  submission  of 
indications of interest, preliminary negotiations, negotiations of letters of intent or negotiations of definitive agreements. The 
success of any acquisition is uncertain and depends on a number of factors, some of which are outside the Company's control. See 
"Item 1A. Risk Factors — The Company may be unable to make attractive acquisitions and any acquisition it completes is subject 
to substantial risks that could adversely affect its business."

During 2016, 2015 and 2014, the Company spent $446 million, $36 million and $104 million, respectively, primarily to 
purchase undeveloped acreage for future exploitation and exploration activities in the Spraberry/Wolfcamp field of the Permian 
Basin. 

Permian Basin acquisition. The Company's 2016 acquisition activities include the August 2016 acquisition of 28,000 net 
acres in the Permian Basin, with net production of approximately 1,400 BOEPD, from an unaffiliated third party for $428 million, 
including normal closing adjustments. The fair value of the assets acquired included $347 million of unproved property, $79 
million of proved property and $5 million of other property and equipment. The fair value of the asset retirement obligations and 
other liabilities assumed were $2 million and $1 million, respectively.

Affiliated partnerships. The Company's 2014 acquisition activities include the December 2014 acquisition of the remaining 

limited partner interests in five affiliated oil and gas drilling partnerships for $54 million. 

Exploratory activities. The Company has devoted significant efforts and resources to hiring and developing a highly skilled 
geoscience, engineering and land staff as well as acquiring a significant portfolio of lower-risk exploration opportunities that are 
expected to be evaluated and tested over the next decade and beyond. Exploratory and extension drilling involve greater risks of 
dry holes or failure to find commercial quantities of hydrocarbons than development drilling or enhanced recovery activities. See 
"Item 1A. Risk Factors - Exploration and development drilling may not result in commercially productive reserves."

Development activities. The Company seeks to increase its proved oil and gas reserves, production and cash flow through 
development drilling and by conducting other production enhancement activities, such as well recompletions. During the three 
years ended December 31, 2016, the Company drilled 464 gross (368 net) development wells, with 100 percent of the wells being 
successfully completed as productive wells, at a total drilling cost (net to the Company's interest) of $2.9 billion.

The  Company  believes  that  its  current  property  base  provides  a  substantial  inventory  of  prospects  for  future  reserve, 
production and cash flow growth. The Company's proved reserves as of December 31, 2016 include proved undeveloped reserves 
and proved developed reserves that are behind pipe of 37 MMBbls of oil, 10 MMBbls of NGLs and 136 Bcf of gas. The Company 
believes that its proved reserves provide a meaningful portfolio of development opportunities. The timing of the development of 
these proved reserves will be dependent upon commodity prices, drilling and operating costs and the Company's expected operating 
cash flows and financial condition.

Integrated services. The Company continues to utilize its integrated services to control well costs and operating costs in 
addition to supporting the execution of its drilling and production activities. The Company owns fracture stimulation fleets totaling 
approximately 470,000 horsepower that support its drilling operations. The Company also owns other field service equipment that 
support its drilling and production operations, including pulling units, fracture stimulation tanks, water transport trucks, hot oilers, 
blowout preventers, construction equipment and fishing tools. In addition, Premier Silica (the Company's wholly-owned sand 
mining subsidiary) is supplying high-quality and logistically advantaged brown sand for proppant, which is being used by the 
Company to fracture stimulate horizontal wells in the Spraberry and Wolfcamp Shale intervals.

The Company is also developing a water distribution system to support the Company's field development. The Company 
is purchasing approximately 100 thousand barrels per day of effluent water from the City of Odessa and has signed an agreement 
with the City of Midland to purchase effluent water upon legislative validation from the State of Texas and completion of a new 
water treatment facility. The Company expects to spend $160 million in 2017 primarily related to its field-wide water distribution 
network, which is expected to provide significant future cost savings and support the Company's long-term growth plan in the 
Spraberry/Wolfcamp area.

Asset divestitures and discontinued operations. The Company regularly reviews its asset base for the purpose of identifying 
nonstrategic assets, the disposition of which would increase capital resources available for other activities, create organizational 
and operational efficiencies and further the Company's objective of maintaining a strong balance sheet to ensure financial flexibility.

EFS Midstream. In July 2015, the Company completed the sale of its 50.1 percent equity interest in EFS Midstream LLC 
("EFS Midstream") to an unaffiliated third party, with the Company receiving total consideration of $1.0 billion, of which $530 

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PIONEER NATURAL RESOURCES COMPANY

million was received at closing and the remaining $501 million was received in July 2016. The Company recorded a net gain on 
the disposition of $777 million in September 2015. 

Sendero.  In  March  2014,  the  Company  completed  the  sale  of  its  majority  interest  in  Sendero  Drilling  Company,  LLC 
("Sendero") to Sendero's minority interest owner for cash proceeds of $31 million. As part of the sales agreement, the Company 
committed to lease from Sendero 12 vertical rigs through December 31, 2015 and eight vertical rigs in 2016.

Asset divestitures reflected as discontinued operations. During 2014, the Company completed the sale of (i) its net assets 
in the Hugoton field in southwest Kansas for cash proceeds of $328 million, (ii) its net assets in the Barnett Shale field in North 
Texas for cash proceeds of $150 million and (iii) 100 percent of its capital stock in Pioneer's Alaska subsidiary ("Pioneer Alaska") 
for cash proceeds of $267 million. The Company has reflected the results of operations of its Hugoton assets, its Barnett Shale 
assets and Pioneer Alaska as discontinued operations in the accompanying consolidated statements of operations. 

The Company anticipates that it will continue to sell nonstrategic properties or other assets from time to time to increase 
capital resources available for other activities, to achieve operating and administrative efficiencies and to improve profitability. 
See Notes C and D of Notes to Consolidated Financial Statements included in "Item 8. Financial Statements and Supplementary 
Data" for specific information regarding the Company's asset divestitures, impairments and discontinued operations. Also see 
"Item 1A. Risk Factors - The Company's ability to complete dispositions of assets, or interests in assets, may be subject to factors 
beyond its control, and in certain cases the Company may be required to retain liabilities for certain matters" for a discussion of 
risks associated with potential divestitures.

Marketing of Production

General. Production from the Company's properties is marketed using methods that are consistent with industry practices. 
Sales prices for oil, NGL and gas production are negotiated based on factors normally considered in the industry, such as an index 
or spot price, price regulations, distance from the well to the pipeline, commodity quality and prevailing supply and demand 
conditions. See "Item 7A. Quantitative and Qualitative Disclosures About Market Risk" for additional discussion regarding price 
risk.

Seasonal nature of business. Generally, but not always, the demand for gas decreases during the summer months and 
increases during the winter months. Seasonal anomalies such as mild winters or hot summers may impact general seasonal changes 
in demand.  

Significant purchasers. During 2016, the Company's significant purchasers of oil, NGLs and gas were Occidental Energy 
Marketing Inc. (17 percent), Plains Marketing LP (17 percent) and Vitol, Inc. (13 percent). Vitol Inc.'s Permian Basin oil systems 
were acquired by Sunoco Logistics Partners L.P. ("Sunoco") during the fourth quarter of 2016; the Company's contracts with Vitol 
Inc. have been transferred to Sunoco. The loss of a significant purchaser or an inability to secure adequate pipeline, gas plant and 
NGL fractionation infrastructure in its key producing areas could have a material adverse effect on its ability to sell its oil, NGL 
and gas production. See "Item 1A. Risk Factors - The Company may not be able to obtain access on commercially reasonable 
terms or otherwise to pipelines and storage facilities, gathering systems and other transportation, processing, fractionation and 
refining facilities to market its oil, NGL and gas production; the Company relies on a limited number of purchasers for a majority 
of  its  products"  and  Note  L  of  Notes  to  Consolidated  Financial  Statements  included  in  "Item  8.  Financial  Statements  and 
Supplementary Data" for more information about infrastructure capacity risks and the Company's significant customers.

Derivative risk management activities. The Company primarily utilizes commodity swap contracts, collar contracts and 
collar contracts with short puts that are intended to (i) reduce the effect of price volatility on the commodities the Company produces 
and sells or consumes, (ii) support the Company's annual capital budgeting and expenditure plans and (iii) reduce commodity 
price risk associated with certain capital projects. The Company also, from time to time, utilizes interest rate derivative contracts 
intended to reduce the effect of interest rate volatility on the Company's indebtedness. The Company accounts for its derivative 
contracts  using  the  mark-to-market  ("MTM")  method  of  accounting.  See  "Item  7.  Management's  Discussion  and Analysis  of 
Financial Condition and Results of Operations" for a description of the Company's derivative risk management activities, "Item 
7A. Quantitative and Qualitative Disclosures About Market Risk" and Note E of Notes to Consolidated Financial Statements 
included in "Item 8. Financial Statements and Supplementary Data" for information about the impact of commodity derivative 
activities on oil, NGL and gas revenues and net derivative gains and losses during 2016, 2015 and 2014, as well as the Company's 
open commodity derivative positions at December 31, 2016, and subsequent changes to those positions.

Competition, Markets and Regulations

Competition. The oil and gas industry is highly competitive in the exploration for and acquisition of reserves, the acquisition 
of oil and gas leases and the hiring and retention of staff necessary for the identification, evaluation and acquisition and development 
of such properties. The Company's competitors include a large number of companies, including major integrated oil and gas 

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PIONEER NATURAL RESOURCES COMPANY

companies, other independent oil and gas companies, and individuals engaged in the exploration for and development of oil and 
gas properties. Some of the Company's competitors are substantially larger and have financial and other resources greater than 
those of the Company; as such, the Company may be at a competitive disadvantage in the identification, acquisition and development 
of properties that complement the Company's operations.  

Competitive advantage is gained in the oil and gas exploration and development industry by employing well-trained and 
experienced personnel who make prudent capital investment decisions based on management direction, embrace technological 
innovation and are focused on price and cost management. The Company has a team of dedicated employees who represent the 
professional  disciplines  and  sciences  that  the  Company  believes  are  necessary  to  allow  Pioneer  to  maximize  the  long-term 
profitability and net asset value inherent in its physical assets. 

Markets. The Company's ability to produce and market oil, NGLs and gas profitably depends on numerous factors beyond 
the Company's control. The effect of these factors cannot be accurately predicted or anticipated. Although the Company cannot 
predict the occurrence of events that may affect commodity prices or the degree to which commodity prices will be affected, the 
prices for any commodity that the Company produces will generally approximate current market prices in the geographic region 
of the production.

Securities regulations. Enterprises that sell securities in public markets are subject to regulatory oversight by agencies such 
as the SEC and the NYSE. This regulatory oversight imposes on the Company many requirements, including the responsibility 
for establishing and maintaining disclosure controls and procedures and internal controls over financial reporting, and ensuring 
that the financial statements and other information included in submissions to the SEC do not contain any untrue statement of a 
material fact or omit to state a material fact necessary to make the statements made in such submissions not misleading. Failure 
to comply with the rules and regulations of the SEC could subject the Company to litigation from public or private plaintiffs. 
Failure to comply with the rules of the NYSE could result in the de-listing of the Company's common stock, which would have 
an adverse effect on the market price and liquidity of the Company's common stock. Compliance with some of these rules and 
regulations is costly, and regulations are subject to change or reinterpretation.

 Environmental and occupational health and safety matters. The Company's operations are subject to stringent federal, 
state and local laws and regulations governing worker health and safety, the discharge of materials into the environment and 
environmental protection. Numerous governmental entities, including the U.S. Environmental Protection Agency (the "EPA") and 
analogous state agencies, have the power to enforce compliance with these laws and regulations and the permits issued under 
them, which may cause the Company to incur significant capital expenditures or take costly actions to achieve and maintain 
compliance. Failure to comply with these laws and regulations may result in the assessment of sanctions, including administrative, 
civil and criminal penalties, and the issuance of orders enjoining the Company from conducting certain operations in a particular 
area. While, historically, the Company's environmental compliance costs have not had a material adverse effect on its results of 
operations, there can be no assurance that such costs will not be material in the future as the Company complies with existing or 
new environmental requirements.

The following is a summary of the more significant environmental and worker health and safety laws, as amended from 
time to time, to which the Company's business operations are or may be subject and with which compliance or the failure to 
maintain compliance may have a material adverse effect on the Company's capital expenditures, results of operations or financial 
position.

Hazardous wastes and substances. The federal 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 authority delegated by the EPA, the individual states administer some or all of the provisions of RCRA, sometimes in 
conjunction with their own, more stringent requirements. The Company generates some amounts of ordinary industrial wastes 
that may be regulated as RCRA hazardous wastes. RCRA currently excludes drilling fluids, produced waters and most of the other 
wastes associated with the exploration, development and production of oil or gas from the definition of hazardous waste. These 
wastes are instead regulated under RCRA's less stringent non-hazardous waste provisions. Any removal of this exclusion could 
have a material adverse effect on the Company's results of operations and financial position, and it is possible that certain oil and 
gas exploration and production wastes now classified as non-hazardous could be classified as hazardous waste in the future. For 
example, following the filing of a lawsuit in the U.S. District Court for the District of Columbia in May 2016 by several non-
governmental environmental groups against the EPA for the agency's failure to timely assess its RCRA Subtitle D criteria regulations 
for oil and gas wastes, the EPA and the environmental groups entered into a settlement agreement that was finalized in a consent 
decree issued by the District Court on December 28, 2016, whereby the EPA is required to propose no later than March 15, 2019, 
a rulemaking for revision of certain Subtitle D criteria regulations pertaining to oil and gas wastes or sign a determination that 
revision of the regulations is not necessary. If the EPA proposes a rulemaking for revised oil and gas waste regulations, the decree 
requires that the EPA take final action following notice and comment rulemaking no later than July 15, 2021.

10

PIONEER NATURAL RESOURCES COMPANY

The federal Comprehensive Environmental Response, Compensation and Liability Act ("CERCLA"), also known as the 
Superfund law, and analogous state laws impose joint and several liability, without regard to fault or 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 current and past owner or operator of the site where the release occurred, and anyone who disposed or arranged for 
the disposal of a 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. CERCLA also authorizes the EPA and, in some instances, third parties to act in response 
to threats to the public health or the environment and to seek to recover from the responsible classes of persons the costs they 
incur. 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. The Company generates materials in the course of 
its operations that may be regulated as CERCLA hazardous substances.

The Company currently owns or leases numerous properties that have been used for oil and gas exploration and production 
for many years. Although the Company believes it has used operating and waste disposal practices that were standard in the 
industry at the time, hazardous substances, wastes or petroleum hydrocarbons may have been released on or under the properties 
owned or leased by the Company, or on or under other locations, including off-site locations, where such substances have been 
taken  for  treatment  or  disposal.  In  addition,  some  of  the  Company's  properties  or  former  properties  have  been  operated  by 
predecessors  or  previous  owners  or  operators  whose  treatment  and  disposal  of  hazardous  substances,  wastes  or  petroleum 
hydrocarbons were not under the Company's control. Certain of these properties have had historical petroleum spills or releases. 
Such properties and the substances disposed or released on them may be subject to CERCLA, RCRA and analogous state laws, 
which could require the Company to remove previously disposed substances and wastes, remediate contaminated property or 
perform remedial plugging or pit closure operations to prevent future contamination. Although the costs of managing wastes or 
other substances classified as hazardous waste may be significant, the Company does not expect to experience any more burdensome 
costs than similarly situated companies in the industry.

Water use, surface discharges and discharges into belowground formations. The federal Water Pollution Control Act, also 
known as the Clean Water Act (the "CWA"), and analogous state laws impose restrictions and strict controls with respect to the 
discharge of pollutants, including spills and leaks of oil and hazardous substances, into waters of the United States and state waters. 
Spill prevention, control and countermeasure plan requirements imposed under the CWA require appropriate containment berms 
and similar structures to help prevent the contamination of navigable waters in the event of a petroleum hydrocarbon spill, rupture 
or leak. Additionally, the CWA and analogous state laws require individual permits or coverage under general permits for discharges 
of stormwater runoff from certain types of facilities. The CWA also prohibits the discharge of dredge and fill material into regulated 
waters, including wetlands, unless authorized by an appropriately issued permit. Federal and state regulatory agencies can impose 
administrative, civil and criminal penalties, as well as require remedial or mitigation measures, for noncompliance with discharge 
permits or other requirements of the CWA and analogous state laws and regulations. 

The Oil Pollution Act ("OPA") sets minimum standards for prevention, containment and cleanup of oil spills into waters 
of the United States. Under OPA, responsible parties, including owners and operators of onshore facilities, such as exploration 
and production facilities, may be held strictly liable for oil spill cleanup costs and natural resource damages as well as a variety 
of public and private damages that may result from oil spills. OPA amends the CWA and thus noncompliance with OPA could 
result in civil and criminal penalties under the CWA.

In May 2015, the EPA released a final rule that was meant to define more precisely the extent to which water bodies are 
subject to the CWA. The CWA has generated substantial controversy, and several court challenges have been filed and are ongoing.  
The rule was stayed nationwide by the U.S. Sixth Circuit Court of Appeals in 2015 as that appellate court ponders lawsuits opposing 
implementation of the rule. In January 2017, the U.S. Supreme Court accepted review of this rule to determine whether jurisdiction 
rests with the federal district or appellate courts. The Company continues to monitor the legal challenges to the rule and evaluate 
the impact of the CWA on its operations. Any expansion to CWA jurisdiction in areas where the Company operates could impose 
additional permitting obligations on the Company.

The Company may dispose of produced water from oil and gas activities in underground wells, which are designed and 
permitted to place the water into non-productive geologic formations, isolated from fresh water sources. The Underground Injection 
Control ("UIC") program established under the federal Safe Drinking Water Act ("SDWA") (i) requires permits from the EPA or 
an analogous state agency for the construction and operation of disposal wells, (ii) establishes minimum standards for disposal 
well  operations  and  (iii)  restricts  the  types  and  quantities  of  fluids  that  may  be  disposed.  Because  some  states  have  become 
concerned that the disposal of produced water into belowground formations could contribute to seismicity, they have adopted or 
are considering adopting additional regulations governing such disposal. Should future onerous regulations or bans relating to 
underground wells be placed in effect in areas where the Company has significant operations, there could be an adverse impact 
on the Company's ability to operate. See "Item 1A. Risk Factors - Legislation or regulatory initiatives intended to address seismic 

11

PIONEER NATURAL RESOURCES COMPANY

activity could restrict the Company's drilling and production activities, as well as its ability to dispose of produced water gathered 
from such activities, which could have a material adverse effect on its business" for further discussion on seismicity issues.

Hydraulic fracturing. Hydraulic fracturing is an important and common practice to stimulate production of oil and gas from 
dense subsurface rock formations. The process involves the injection of water, sand and additives under pressure into targeted 
subsurface formations to fracture the surrounding rock and stimulate oil and gas production. The Company routinely conducts 
hydraulic fracturing in its drilling and completion programs. The process is typically regulated by state oil and gas commissions, 
but several federal, state or local agencies have asserted regulatory authority over certain aspects of the process. Additionally, 
from time to time, the U.S. Congress has considered legislation that would provide for federal regulation of hydraulic fracturing 
and disclosure of chemical used in the fracturing process but, to date, no such federal legislation has been adopted. The Company 
participates in FracFocus, a national publicly accessible internet-based registry developed by the Ground Water Protection Council 
and the Interstate Oil and Gas Compact Commission. The additives used in the hydraulic fracturing process on all wells the 
Company operates are disclosed on that website. In the event federal, state or local restrictions are adopted in areas where the 
Company is currently conducting operations, or in the future plans to conduct operations, the Company may incur additional costs 
to comply with such requirements that may be significant in nature, experience delays or curtailment in the pursuit of exploration, 
development or production activities, and be limited or precluded in the drilling of wells or the volume that the Company is 
ultimately able to produce from its reserves.

See "Item 1A. Risk Factors - Federal, state and local legislative and regulatory initiatives relating to hydraulic fracturing, 
as well as governmental reviews of such activities, could result in increased costs and additional operating restrictions or delays 
and adversely affect the Company's production" for further discussion on hydraulic fracturing issues.

Air emissions. The Clean Air Act (the "CAA") and comparable state laws regulate emissions of various air pollutants through 
air emissions permitting programs and the imposition of other compliance requirements. Such laws and regulations could (i) 
require a facility to obtain pre-approval for construction or modification projects expected to produce air emissions or result in 
the  increase  of  existing  air  emissions,  (ii)  impose  stringent  air  permit  requirements  or  (iii)  utilize  specific  emission  control 
technologies to limit emissions of certain air pollutants. Federal and state regulatory agencies can also impose administrative, civil 
and  criminal  penalties  for  noncompliance  with  air  permits  or  other  requirements  of  the  CAA  and  associated  state  laws  and 
regulations. See "Item 1A. Risk Factors - The Company's operations are subject to federal, state and local laws and regulations, 
including those that govern the discharge of materials into the environment, that could cause it to suspend or curtail its operations 
or incur substantial costs" for further discussion on air emission issues.

Climate change. Climate change continues to attract considerable public, political and scientific attention. As a result, 
numerous proposals have been made, and are likely to continue to be made, at the international, national, regional and state levels 
of government to monitor and limit emissions of greenhouse gases ("GHGs"). These efforts have included consideration of cap-
and-trade programs, carbon taxes, GHG reporting and tracking programs, and regulations that directly limit GHG emissions from 
certain  sources. The  adoption  and  implementation  of  any  international,  federal  or  state  legislation  or  regulations  that  require 
reporting of GHGs or otherwise restrict emissions of GHGs from the Company's equipment and operations could require the 
Company to incur increased operating costs, such as costs to purchase and operate emissions control systems, acquire emissions 
allowances or comply with new regulatory or reporting requirements. See "Item 1A. Risk Factors - Climate change legislation 
and regulatory initiatives restricting emissions of GHGs could result in increased operating costs and reduced demand for the oil, 
NGLs and gas the Company produces" for further discussion on climate change issues.

Endangered species. The federal Endangered Species Act (the "ESA") and analogous state laws regulate activities that 
could have an adverse effect on species listed as threatened or endangered under the ESA. Some of the Company's operations are 
conducted in areas where protected species or their habitats are known to exist. In these areas, the Company may be obligated to 
develop and implement plans to avoid potential adverse effects to protected species and their habitats, and the Company may be 
prohibited from conducting operations in certain locations or during certain seasons, such as breeding and nesting seasons, when 
the Company's operations could have an adverse effect on the species. It is also possible that a federal or state agency could order 
a complete halt to drilling activities in certain locations if it is determined that such activities may have a serious adverse effect 
on a protected species. See "Item 1A. Risk Factors - Laws and regulations pertaining to threatened and endangered species could 
delay or restrict the Company's operations and cause it to incur substantial costs" for further discussion on endangered species 
issues. 

Activities on federal lands. Oil and gas exploration, development and production activities on federal lands are subject to 
the  National  Environmental  Policy Act  ("NEPA").  NEPA  requires  federal  agencies,  including  the  federal  Bureau  of  Land 
Management (the "BLM"), to evaluate major agency actions having the potential to significantly impact the environment. In the 
course of such evaluations, an agency will prepare an Environmental Assessment that assesses the potential direct, indirect and 
cumulative impacts of a proposed project and, if necessary, will prepare a more detailed Environmental Impact Statement that 
may be made available for public review and comment. Currently, the Company has minimal exploration and production activities 

12

PIONEER NATURAL RESOURCES COMPANY

on federal lands. However, for those current activities as well as for future or proposed exploration and development plans on 
federal lands, governmental permits or authorizations that are subject to the requirements of NEPA are required. This process has 
the potential to delay or limit, or increase the cost of, the development of some of the Company's oil and gas projects. Authorizations 
under NEPA are also subject to protest, appeal or litigation, any or all of which may delay or halt projects. Moreover, depending 
on the mitigation strategies recommended in the Environmental Assessments, the Company could incur added costs, which could 
be substantial.

Occupational health and safety. The Company's operations are subject to the requirements of the federal Occupational 
Safety and Health Administration ("OSHA") and comparable state statutes. These laws and the related regulations strictly govern 
the protection of the health and safety of employees. The OSHA hazard communication standard, EPA community right-to-know 
regulations under Title III of CERCLA and similar state statutes require that the Company organize or disclose information about 
hazardous materials used or produced in the Company's operations. In addition, the Company's sand mining operations are subject 
to the Federal Mine Safety and Health Act of 1977, as amended by the Mine Improvement and New Emergency Response Act of 
2006, which imposes stringent health and safety standards on numerous aspects of mineral extraction and processing operations, 
including the training of personnel, operating procedures, operating equipment and other matters.

Other regulation of the oil and gas industry. The oil and gas industry is regulated by numerous federal, state and local 
authorities. Legislation affecting the oil and gas industry is under constant review for amendment or expansion, frequently increasing 
the regulatory burden. Also, numerous federal and state departments and agencies are authorized by statute to issue rules and 
regulations that are binding on the oil and gas industry and its individual members, some of which carry substantial penalties for 
failure to comply. Although the regulatory burden on the oil and gas industry may increase the Company's cost of doing business 
by increasing the cost of production, the Company believes that these burdens generally do not affect the Company any differently 
or to any greater or lesser extent than they affect other companies in the industry with similar types, quantities and locations of 
production.

Development and production. Development and production operations are subject to various types of regulation at federal, 
state and local levels. These types of regulation include requiring permits for the drilling of wells, the posting of bonds in connection 
with various types of activities and filing reports concerning operations. Most states, and some counties and municipalities, in 
which the Company operates also regulate one or more of the following:

• 
• 
• 
• 
• 
• 

the location of wells;
the method of drilling and casing wells;
the method and ability to fracture stimulate wells;
the surface use and restoration of properties upon which wells are drilled;
the plugging and abandoning of wells; and
notice to surface owners and other third parties.

State laws regulate the size and shape of drilling and spacing units or proration units governing the pooling of oil and gas 
properties. Some states allow forced pooling or integration of tracts to facilitate development while other states rely on voluntary 
pooling of lands and leases. In some instances, forced pooling or unitization may be implemented by third parties and may reduce 
the Company's interest in the unitized properties. In addition, state conservation laws establish maximum rates of production from 
oil and gas wells, generally prohibit the venting or flaring of gas and impose requirements regarding production rates. These laws 
and regulations may limit the amount of oil and gas the Company can produce from the Company's wells or limit the number of 
wells or the locations that the Company can drill. Moreover, each state generally imposes a production or severance tax with 
respect to the production and sale of oil, NGLs and gas within its jurisdiction. States do not regulate wellhead prices or engage in 
other similar direct regulation, but there can be no assurance that they will not do so in the future. The effect of such future 
regulations may limit the amounts of oil and gas that may be produced from the Company's wells, negatively affect the economics 
of production from these wells or limit the number of locations the Company can drill.

Regulation of transportation and sale of gas. The availability, terms and cost of transportation significantly affect sales of 
gas. Federal and state regulations govern the price and terms for access to gas pipeline transportation. Intrastate gas pipeline 
transportation activities are subject to various state laws and regulations, as well as orders of state regulatory bodies. The interstate 
transportation and sale of gas is subject to federal regulation, including regulation of the terms, conditions and rates for interstate 
transportation, storage and various other matters, primarily by the Federal Energy Regulatory Commission ("FERC"). FERC 
endeavors to make gas transportation more accessible to gas buyers and sellers on an open-access and non-discriminatory basis.

Pursuant to the Energy Policy Act of 2005 ("EPAct 2005") it is unlawful for any entity, such as the Company, to use any 
deceptive or manipulative device or contrivance in connection with the purchase or sale of gas or transportation services subject 
to regulation by FERC, in contravention of rules prescribed by FERC. The EPAct 2005 also gives FERC authority to impose civil 
penalties of up to $1.2 million per day for each violation of the Natural Gas Act ("NGA") or the Natural Gas Policy Act of 1978. 

13

 
PIONEER NATURAL RESOURCES COMPANY

Under FERC Order 704, which regulates annual gas transaction reporting requirements, any market participant, including 
a producer such as the Company, that engages in wholesale sales or purchases of gas that equal or exceed 2.2 million MMBtus of 
physical gas in the previous calendar year must annually report such sales and purchases to FERC on Form No. 552 by May 1 of 
the  year  following  the  calendar  year  when  such  sales  and  purchases  occurred.  Form  No.  552  contains  aggregate  volumes  of 
wholesale gas purchased or sold in the prior calendar year to the extent such transactions utilize, contribute to or may contribute 
to the formation of price indices. Order 704 is intended to increase the transparency of the wholesale gas markets and to assist 
FERC in monitoring those markets and in detecting market manipulation.

Intrastate gas pipeline transportation rates are subject to regulation by state regulatory commissions. The basis for intrastate 
gas pipeline regulation, and the degree of regulatory oversight and scrutiny given to intrastate gas pipeline rates, vary from state 
to state. Additional proposals and proceedings that might affect the gas industry are considered from time to time by the U.S. 
Congress, FERC, state regulatory bodies and the courts. The Company cannot predict when or if any such proposals might become 
effective or their effect, if any, on its operations. The Company believes that the regulation of intrastate gas pipeline transportation 
rates will not affect its operations in any way that is materially different from the effects on its similarly situated competitors.

Natural gas processing. The Company's gas processing operations are generally not subject to FERC or state regulation. 
There can be no assurance that the Company's processing operations will continue to be unregulated in the future. However, 
although the processing facilities may not be directly related, other laws and regulations may affect the availability of gas for 
processing, such as state regulation of production rates and maximum daily production allowable from gas wells, which could 
impact the Company's processing business.

Gas gathering. Section 1(b) of the NGA exempts gas gathering facilities from FERC jurisdiction. The Company believes 
that its gathering facilities meet the traditional tests FERC has used to establish a pipeline system's status as a non-jurisdictional 
gatherer.  There  is,  however,  no  bright-line  test  for  determining  the  jurisdictional  status  of  pipeline  facilities.  Moreover,  the 
distinction between FERC-regulated transmission services and federally unregulated gathering services is the subject of litigation 
from time to time, so the classification and regulation of some of the Company's gathering facilities may be subject to change 
based on future determinations by the FERC and the courts. Thus, the Company cannot guarantee that the jurisdictional status of 
its gas gathering facilities will remain unchanged.

While the Company owns or operates some gas gathering facilities, the Company also depends on gathering facilities owned 
and operated by third parties to gather production from its properties, and therefore the Company is affected by the rates charged 
by these third parties for gathering services. To the extent that changes in federal or state regulation affect the rates charged for 
gathering services, the Company also may be affected by these changes. The Company does not anticipate that the Company 
would be affected any differently than similarly situated gas producers.

Regulation of transportation and sale of oil and NGLs. Intrastate liquids pipeline transportation rates, terms and conditions 
are subject to regulation by numerous federal, state and local authorities and, in a number of instances, the ability to transport and 
sell such products on interstate pipelines is dependent on pipelines that are also subject to FERC jurisdiction under the Interstate 
Commerce Act (the "ICA"). The Company does not believe these regulations affect it any differently than other producers.

The ICA requires that pipelines maintain a tariff on file with the FERC. The tariff sets forth the established rates as well as 
the rules and regulations governing the service. The ICA requires, among other things, that rates and terms and conditions of 
service on interstate common carrier pipelines be "just and reasonable." Such pipelines must also provide jurisdictional service 
in a manner that is not unduly discriminatory or unduly preferential. Shippers have the power to challenge new and existing rates 
and terms and conditions of service before the FERC.

Rates of interstate liquids pipelines are currently regulated by the FERC, primarily through an annual indexing methodology, 
under which pipelines increase or decrease their rates in accordance with an index adjustment specified by the FERC. For the five-
year period beginning in July 2016, the FERC established an annual index adjustment equal to the change in the producer price 
index for finished goods plus 1.23 percent. This adjustment is subject to review every five years. Under the FERC's regulations, 
a liquids pipeline can request a rate increase that exceeds the rate obtained through application of the indexing methodology by 
using a cost-of-service approach, but only after the pipeline establishes that a substantial divergence exists between the actual 
costs  experienced  by  the  pipeline  and  the  rates  resulting  from  application  of  the  indexing  methodology.  Increases  in  liquids 
transportation rates may result in lower revenue and cash flows for the Company. 

In addition, due to common carrier regulatory obligations of liquids pipelines, capacity must be prorated among shippers 
in an equitable manner in the event there are nominations in excess of capacity by current shippers or capacity requests are received 
from a new shipper. Therefore, new shippers or increased volume by existing shippers may reduce the capacity available to the 
Company. Any prolonged interruption in the operation or curtailment of available capacity of the pipelines that the Company relies 
upon for liquids transportation could have a material adverse effect on its business, financial condition, results of operations and 

14

PIONEER NATURAL RESOURCES COMPANY

cash flows. However, the Company believes that access to liquids pipeline transportation services generally will be available to 
it to the same extent as to its similarly situated competitors.

In November 2009, the Federal Trade Commission (the "FTC") issued regulations pursuant to the Energy Independence 
and Security Act of 2007 intended to prohibit market manipulation in the petroleum industry. Violators of the regulations face 
civil penalties of up to $1.0 million per violation per day. The Commodity Futures Trading Commission (the "CFTC") has also 
issued anti-manipulation rules that subject violators to a civil penalty of up to the greater of $1.0 million or triple the monetary 
gain to the person for each violation.

Energy commodity prices. Sales prices of oil, condensate, NGLs and gas are not currently regulated and sales are made at 
market prices. Although prices of these energy commodities are currently unregulated, the U.S. Congress historically has been 
active in their regulation. The Company cannot predict whether new legislation to regulate oil and gas might actually be enacted 
by the U.S. Congress or the various state legislatures, and what effect, if any, the proposals might have on the Company's operations.

Transportation of hazardous materials. The federal Department of Transportation has adopted regulations requiring that 
certain entities transporting designated hazardous materials develop plans to address security risks related to the transportation of 
hazardous materials. The Company does not believe that these requirements will have an adverse effect on the Company or its 
operations. The Company cannot provide any assurance that the security plans required under these regulations would protect 
against all security risks and prevent an attack or other incident related to the Company's transportation of hazardous materials.

ITEM 1A. RISK FACTORS

The nature of the business activities conducted by the Company subjects it to certain hazards and risks. The following is a 
summary of some of the material risks relating to the Company's business activities. Other risks are described in "Item 1. Business 
— Competition, Markets and Regulations," "Item 7. Management's Discussion and Analysis of Financial Condition and Results 
of Operations" and "Item 7A. Quantitative and Qualitative Disclosures About Market Risk." These risks are not the only risks 
facing the Company. The Company's business could also be affected by additional risks and uncertainties not currently known to 
the Company or that it currently deems to be immaterial. If any of these risks actually occurs, it could materially harm the Company's 
business, financial condition or results of operations or impair the Company's ability to implement business plans or complete 
development activities as scheduled. In that case, the market price of the Company's common stock could decline.

The prices of oil, NGLs and gas are highly volatile and have declined significantly in recent years. A sustained decline in these 
commodity prices could adversely affect the Company's business, financial condition and results of operations.

The Company's revenues, profitability, cash flow and future rate of growth are highly dependent on commodity prices. 
Commodity prices may fluctuate widely in response to relatively minor changes in the supply of and demand for oil, NGLs and 
gas, market uncertainty and a variety of additional factors that are beyond the Company's control, such as:

domestic and worldwide supply of and demand for oil, NGLs and gas;
the price and quantity of foreign imports of oil, NGLs and gas;

• 
• 
•  worldwide oil, NGL, and gas inventory levels, including at Cushing, Oklahoma, the benchmark location for WTI oil 

prices, and the U.S. Gulf Coast, where the majority of the U.S. refinery capacity exists;
the capacity of U.S. and international refiners to utilize U.S. supplies of oil and condensate; 

• 
•  weather conditions;
• 
• 
• 
• 
• 
• 
• 

overall domestic and global political and economic conditions;
actions of OPEC, its members and other state-controlled oil companies relating to oil price and production controls;
the effect of oil and LNG imports to and exports from the U.S.;
technological advances affecting energy consumption and energy supply;
domestic and foreign governmental regulations, including environmental regulations, and taxation;
the effect of energy conservation efforts;
shareholder activism or activities by non-governmental organizations to restrict the exploration and production of oil 
and gas so as to minimize emissions of carbon dioxide and methane GHGs;
the proximity, capacity, cost and availability of pipelines and other transportation facilities; and
the price and availability of alternative fuels.

• 
• 

In the past, commodity prices have been extremely volatile, and the Company expects this volatility to continue. For the 
five years ended December 31, 2016, oil prices fluctuated from a high of $110.53 per Bbl in 2013 to a low of $26.21 per Bbl in 
2016 while gas prices fluctuated from a high of $6.15 per Mcf in 2014 to a low of $1.64 per Mcf in 2016. Likewise, NGLs have 
suffered significant recent declines. NGLs are made up of ethane, propane, isobutene, normal butane and natural gasoline, all of 
which have different uses and different pricing characteristics. A further or extended decline in commodity prices could materially 

15

PIONEER NATURAL RESOURCES COMPANY

and adversely affect the Company's future business, financial condition, results of operations, liquidity or ability to finance planned 
capital expenditures. The Company makes price assumptions that are used for planning purposes, and a significant portion of the 
Company's cash outlays, including rent, salaries and noncancelable capital commitments, are largely fixed in nature. Accordingly, 
if commodity prices are below the expectations on which these commitments were based, the Company's financial results are 
likely to be adversely and disproportionately affected because these cash outlays are not variable in the short term and cannot be 
quickly reduced to respond to unanticipated decreases in commodity prices.

Significant or extended price declines could also adversely affect the amount of oil, NGLs and gas that the Company can 
produce economically, which may result in the Company having to make significant downward adjustments to its estimated proved 
reserves. For example, the Company's proved reserves as of December 31, 2016 decreased by 58 MBOE, as compared to proved 
reserves at December 31, 2015 as a result of declines in the average oil and gas price used to calculate proved reserves for each 
respective period declining from $50.11 per BBL and $2.59 per MCF in 2015 to $42.82 per BBL and $2.48 per MCF in 2016. A 
reduction in production could also result in a shortfall in expected cash flows and require the Company to reduce capital spending 
or borrow funds to cover any such shortfall. Any of these factors could negatively affect the Company's ability to replace its 
production and its future rate of growth.

The Company's derivative risk management activities could result in financial losses; the Company may not enter into derivative 
arrangements with respect to future volumes if prices are unattractive.

To mitigate the effect of commodity price volatility on the Company's net cash provided by operating activities and its net 
asset value, support the Company's annual capital budgeting and expenditure plans and reduce commodity price risk associated 
with certain capital projects, the Company's strategy is to enter into derivative arrangements covering a portion of its oil, NGL 
and gas production. These derivative arrangements are subject to MTM accounting treatment, and the changes in fair market value 
of the contracts are reported in the Company's statements of operations each quarter, which may result in significant noncash gains 
or losses. These derivative contracts may also expose the Company to risk of financial loss in certain circumstances, including 
when:

• 
• 
• 

production is less than the contracted derivative volumes;
the counterparty to the derivative contract defaults on its contract obligations; or
the derivative contracts limit the benefit the Company would otherwise receive from increases in commodity prices.

On the other hand, failure to protect against declines in commodity prices exposes the Company to reduced liquidity when 
prices  decline. Although  the  Company  has  entered  into  commodity  derivative  contracts  for  a  large  portion  of  its  forecasted 
production through 2017, the volumes of protected production for 2018 and future years is substantially less. A sustained lower 
commodity price environment would result in lower realized prices for unprotected volumes and reduce the prices at which the 
Company could enter into derivative contracts on future volumes. This could make such transactions unattractive, and, as a result, 
some or all of the Company's production volumes forecasted for 2018 and beyond may not be protected by derivative arrangements. 
In addition, the Company's derivatives arrangements may not achieve their intended strategic purposes.

The failure by counterparties to the Company's derivative risk management activities to perform their obligations could have 
a material adverse effect on the Company's results of operations.

The use of derivative risk management transactions involves the risk that the counterparties will be unable to meet the 
financial terms of such transactions. The Company is unable to predict changes in a counterparty's creditworthiness or ability to 
perform.  Even  if  the  Company  accurately  predicts  sudden  changes,  the  Company's  ability  to  negate  the  risk  may  be  limited 
depending upon market conditions and the contractual terms of the transactions. During periods of declining commodity prices, 
the Company's derivative receivable positions generally increase, which increases the Company's counterparty credit exposure. 
If any of the Company's counterparties were to default on its obligations under the Company's derivative arrangements, such a 
default could have a material adverse effect on the Company's results of operations, and could result in a larger percentage of the 
Company's future production being subject to commodity price changes and could increase the likelihood that the Company's 
derivative arrangements may not achieve their intended strategic purposes.

 Exploration and development drilling may not result in commercially productive reserves.

Drilling involves numerous risks, including the risk that no commercially productive oil or gas reservoirs will be encountered. 
The cost of drilling, completing and operating wells is often uncertain and drilling operations may be curtailed, delayed or canceled, 
or become costlier, as a result of a variety of factors, including:

• 
• 
• 

unexpected drilling conditions;
unexpected pressure or irregularities in formations;
equipment failures or accidents;

16

PIONEER NATURAL RESOURCES COMPANY

• 
• 
• 
• 
• 
• 

• 

fracture stimulation accidents or failures;
adverse weather conditions;
restricted access to land for drilling or laying pipelines;
lack of available gathering facilities or delays in construction of gathering facilities;
lack of available capacity on interconnecting transmission pipelines;
access to, and the cost and availability of, the equipment, services, resources and personnel required to complete the 
Company's drilling, completion and operating activities; and
delays imposed by or resulting from compliance with environmental and other governmental or regulatory requirements.

The Company's future drilling activities may not be successful and, if unsuccessful, the Company's proved reserves and 
production would decline, which could have an adverse effect on the Company's future results of operations and financial condition. 
While all drilling, whether developmental, extension or exploratory, involves these risks, exploratory and extension drilling involves 
greater risks of dry holes or failure to find commercial quantities of hydrocarbons. The Company expects that it will continue to 
experience exploration and abandonment expense in 2017.

Future price declines could result in a reduction in the carrying value of the Company's proved oil and gas properties, which 
could adversely affect the Company's results of operations.

Significant or extended price declines, as have occurred recently, could result in the Company having to make downward 
adjustments to its estimated proved reserves. It is possible that prices could decline further, or the Company's estimates of production 
or other economic factors could change to such an extent that the Company may be required to impair, as a noncash charge to 
earnings, the carrying value of the Company's oil and gas properties. The Company is required to perform impairment tests on 
proved oil and gas properties whenever events or changes in circumstances indicate that the carrying value of proved properties 
may not be recoverable. To the extent such tests indicate a reduction of the estimated useful life or estimated future cash flows of 
the Company's oil and gas properties, the carrying value may not be recoverable and therefore an impairment charge would be 
required to reduce the carrying value of the proved properties to their fair value. For example, during 2016 the Company recognized 
an impairment charge of $32 million attributable to its West Panhandle field assets in the panhandle region of Texas and, in 2015, 
the Company recognized aggregate impairment charges of $1.1 billion attributable to its Eagle Ford Shale assets, other South 
Texas assets and West Panhandle field assets, primarily due to declines in commodity prices and downward adjustments to the 
economically recoverable reserves attributable to each asset. The Company may incur impairment charges in the future, which 
could materially affect the Company's results of operations in the period incurred. See "Item 7. Management's Discussion and 
Analysis of Financial Condition and Results of Operations - Results of Operations - Impairment of oil and gas properties and other 
long-lived  assets"  and  Note  D  of  Notes  to  Consolidated  Financial  Statements  included  in  "Item  8.  Financial  Statements  and 
Supplementary Data" for further information on the Company's impairment charges.

The Company periodically evaluates its unproved oil and gas properties to determine recoverability of its cost and could be 
required to recognize noncash charges in the earnings of future periods.

At December 31, 2016, the Company carried unproved oil and gas property costs of $486 million. GAAP requires periodic 
evaluation of these costs on a project-by-project basis. These evaluations are affected by the results of exploration activities, 
commodity  price  outlooks,  planned  future  sales  or  expiration  of  all  or  a  portion  of  the  leases  and  the  contracts  and  permits 
appurtenant to such projects. If the quantity of potential reserves determined by such evaluations is not sufficient to fully recover 
the cost invested in each project, the Company will recognize noncash charges in the earnings of future periods.

The Company periodically evaluates its goodwill for impairment and could be required to recognize noncash charges in the 
earnings of future periods.

At December 31, 2016, the Company carried goodwill of $272 million. Goodwill is assessed for impairment annually during 
the third quarter and whenever facts or circumstances indicate that the carrying value of the Company's goodwill may be impaired, 
which may require an estimate of the fair values of the reporting unit's assets and liabilities. Those assessments may be affected 
by (i) additional reserve adjustments both positive and negative, (ii) results of drilling activities, (iii) management's outlook for 
commodity prices and costs and expenses, (iv) changes in the Company's market capitalization, (v) changes in the Company's 
weighted average cost of capital and (vi) changes in income taxes. If the fair value of the reporting unit's net assets is not sufficient 
to fully support the goodwill balance in the future, the Company will reduce the carrying value of goodwill for the impaired value, 
with a corresponding noncash charge to earnings in the period in which goodwill is determined to be impaired.

The Company may be unable to make attractive acquisitions and any acquisition it completes is subject to substantial risks 
that could adversely affect its business.

Acquisitions of producing oil and gas properties have from time to time contributed to the Company's growth. Acquisition 
opportunities in the oil and gas industry are very competitive, which can increase the cost of, or cause the Company to refrain 
17

PIONEER NATURAL RESOURCES COMPANY

from, completing acquisitions. The success of any acquisition will depend on a number of factors and involves potential risks, 
including among other things:

• 

• 

• 
• 
• 
• 

the inability to estimate accurately the costs to develop the reserves, the recoverable volumes of reserves, rates of future 
production and future net cash flows attainable from the reserves;
the assumption of unknown liabilities, including environmental liabilities, and losses or costs for which the Company 
is not indemnified or for which the indemnity the Company receives is inadequate;
the validity of assumptions about costs, including synergies;
the effect on the Company's liquidity or financial leverage of using available cash or debt to finance acquisitions;
the diversion of management's attention from other business concerns; and
an inability to hire, train or retain qualified personnel to manage and operate the Company's growing business and 
assets.

All of these factors affect whether an acquisition will ultimately generate cash flows sufficient to provide a suitable return 
on investment. Even though the Company performs a review of the properties it seeks to acquire that it believes is consistent with 
industry practices, such reviews are often limited in scope. As a result, among other risks, the Company's initial estimates of 
reserves may be subject to revision following an acquisition, which may materially and adversely affect the desired benefits of 
the acquisition.

The Company's ability to complete dispositions of assets, or interests in assets, may be subject to factors beyond its control, 
and in certain cases the Company may be required to retain liabilities for certain matters.

From time to time, the Company sells an interest in a strategic asset for the purpose of assisting or accelerating the asset's 
development. In addition, the Company regularly reviews its property base for the purpose of identifying nonstrategic assets, the 
disposition  of  which  would  increase  capital  resources  available  for  other  activities  and  create  organizational  and  operational 
efficiencies. Various factors could materially affect the ability of the Company to dispose of such interests or nonstrategic assets 
or complete announced dispositions, including the receipt of approvals of governmental agencies or third parties and the availability 
of purchasers willing to acquire the interests or purchase the nonstrategic assets on terms and at prices acceptable to the Company. 

Sellers typically retain certain liabilities or indemnify buyers for certain pre-closing matters, such as matters of litigation, 
environmental contingencies, royalty obligations and income taxes. The magnitude of any such retained liability or indemnification 
obligation may be difficult to quantify at the time of the transaction and ultimately may be material. Also, as is typical in divestiture 
transactions, third parties may be unwilling to release the Company from guarantees or other credit support provided prior to the 
sale of the divested assets. As a result, after a divestiture, the Company may remain secondarily liable for the obligations guaranteed 
or supported to the extent that the buyer of the assets fails to perform these obligations.

The Company's operations involve many operational risks, some of which could result in unforeseen interruptions to the 
Company's operations and substantial losses to the Company for which the Company may not be adequately insured.

The Company's operations, including well stimulation and completion activities, such as hydraulic fracturing, and water 
distribution and disposal activities, are subject to all the risks incident to the oil and gas development and production business, 
including:

• 
• 
• 

• 
• 
• 
• 
• 
• 
• 
• 
• 
• 

blowouts, cratering, explosions and fires;
adverse weather effects;
environmental hazards, such as oil, NGL, gas and water leaks, oil spills, pipeline and vessel ruptures, encountering 
naturally occurring radioactive materials ("NORM"), and unauthorized discharges of toxic chemicals, gases, brine, 
well stimulation and completion fluids or other pollutants onto the surface or into the subsurface environment;
high costs, shortages or delivery delays of equipment, labor or other services or water and sand for hydraulic fracturing;
facility or equipment malfunctions, failures or accidents;
title problems;
pipe or cement failures or casing collapses;
uncontrollable flows of oil or gas well fluids; 
compliance with environmental and other governmental requirements;
lost or damaged oilfield workover and service tools;
unusual or unexpected geological formations or pressure or irregularities in formations; 
terrorism, vandalism and physical, electronic and cyber security breaches; and
natural disasters.

The Company's overall exposure to operational risks may increase as its drilling activity expands and as it increases 
internally-provided fracture stimulation, water distribution, water disposal and other services. Any of these risks could result in 

18

 
 
PIONEER NATURAL RESOURCES COMPANY

substantial losses to the Company due to injury or loss of life, damage to or destruction of wells, production facilities or other 
property, clean-up responsibilities, regulatory investigations and penalties and suspension of operations.

The Company is not fully insured against certain of the risks described above, either because such insurance is not available 
or because of the high premium costs and deductibles associated with obtaining such insurance. Additionally, the Company relies 
to a large extent on facilities owned and operated by third-parties, and damage to or destruction of those third-party facilities could 
affect the ability of the Company to produce, transport and sell its hydrocarbons.

The Company's gas processing operations are subject to operational risks, which could result in significant damages and the 
loss of revenue.

As of December 31, 2016, the Company owned interests in eight gas processing plants and nine treating facilities. The 
Company is the operator of one of the gas processing plants and all nine of the treating facilities. Seven of the gas processing 
plants are operated by third parties and six of the treating facilities are not currently being used. There are significant risks associated 
with the operation of gas processing plants. Gas and NGLs are volatile and explosive and may include carcinogens. Damage to 
or improper operation of a gas processing plant or facility could result in an explosion or the discharge of toxic gases, which could 
result in significant damage claims in addition to interrupting a revenue source.

Part of the Company's strategy involves using some of the latest available horizontal drilling and completion techniques, which 
involve risks and uncertainties in their application.

The Company's operations involve utilizing some of the latest drilling and completion techniques as developed by it and 
its service providers. Risks that the Company faces while drilling horizontal wells include, but are not limited to, the following:

• 
• 
• 
• 

 landing the wellbore in the desired drilling zone;
 staying in the desired drilling zone while drilling horizontally through the formation;
 running casing the entire length of the wellbore; and
 being able to run tools and other equipment consistently through the horizontal wellbore.

Risks that the Company faces while completing wells include, but are not limited to, the following:

• 
• 
• 

 the ability to fracture stimulate the planned number of stages;
 the ability to run tools the entire length of the wellbore during completion operations; and
 the ability to successfully clean out the wellbore after completion of the final fracture stimulation stage.

Drilling in emerging areas is more uncertain than drilling in areas that are more developed and have a longer history of 
established drilling operations. New discoveries and emerging formations have limited or no production history and, consequently, 
the Company is more limited in assessing future drilling results in these areas. If the Company's drilling results are worse than 
anticipated, the return on investment for a particular project may not be as attractive as anticipated and the Company may recognize 
noncash impairment charges to reduce the carrying value of its unproved properties in those areas.

The  Company's  expectations  for  future  drilling  activities  will  be  realized  over  several  years,  making  them  susceptible  to 
uncertainties that could materially alter the occurrence or timing of such activities.

The  Company  has  identified  drilling  locations  and  prospects  for  future  drilling  opportunities,  including  development, 
exploratory and infill drilling activities. These drilling locations and prospects represent a significant part of the Company's future 
drilling plans. For example, the Company's proved reserves as of December 31, 2016 include proved undeveloped reserves and 
proved developed reserves that are behind pipe of 37 MMBbls of oil, 10 MMBbls of NGLs and 136 Bcf of gas. The Company's 
ability to drill and develop these locations depends on a number of factors, including the availability and cost of capital, regulatory 
approvals, negotiation of agreements with third parties, commodity prices, costs, access to and availability of equipment, services, 
resources and personnel and drilling results. There can be no assurance that the Company will drill these locations or that the 
Company will be able to produce oil or gas reserves from these locations or any other potential drilling locations. Well results 
vary by formation and geographic area, and the Company's drilling activities are generally focused on remaining locations that 
are believed to offer the highest return. Changes in the laws or regulations on which the Company relies in planning and executing 
its drilling programs could adversely impact the Company's ability to successfully complete those programs. For example, under 
current Texas laws and regulations the Company may receive permits to drill, and may drill and complete, certain horizontal wells 
that traverse one or more units and/or leases; a change in those laws or regulations could adversely impact the Company's ability 
to drill those wells. Because of these uncertainties, the Company cannot give any assurance as to the timing of these activities or 
that they will ultimately result in the realization of proved reserves or meet the Company's expectations for success. As such, the 
Company's actual drilling activities may materially differ from the Company's current expectations, which could have a significant 
adverse effect on the Company's proved reserves, financial condition and results of operations.

19

PIONEER NATURAL RESOURCES COMPANY

A portion of the Company's total estimated proved reserves at December 31, 2016 were undeveloped, and those proved reserves 
may not ultimately be developed.

At December 31, 2016, approximately seven percent of the Company's total estimated proved reserves were undeveloped. 
Recovery of undeveloped proved reserves requires significant capital expenditures and successful drilling. The Company's reserve 
data assumes that the Company can and will make these expenditures and conduct these operations successfully, which assumptions 
may not prove correct. If the Company chooses not to spend the capital to develop these proved undeveloped reserves, or if the 
Company is not otherwise able to successfully develop these proved undeveloped reserves, the Company will be required to write-
off these proved reserves. In addition, under the SEC's rules, because proved undeveloped reserves may be booked only if they 
relate to wells planned to be drilled within five years of the date of booking, the Company may be required to write-off any proved 
undeveloped reserves that are not developed within this five-year timeframe. As with all oil and gas leases, the Company's leases 
require the Company to drill wells that are commercially productive and to maintain the production in paying quantities, and if 
the Company is unsuccessful in drilling such wells and maintaining such production, the Company could lose its rights under such 
leases. The Company's future production levels and, therefore, its future cash flow and income are highly dependent on successfully 
developing its proved undeveloped leasehold acreage.

The Company's actual production could differ materially from its forecasts.

From time to time, the Company provides forecasts of expected quantities of future oil and gas production and other financial 
and  operating  results. These  forecasts  are  based  on  a  number  of  estimates  and  assumptions,  including  that  none  of  the  risks 
associated with the Company's oil and gas operations summarized in this "Item 1A. Risk Factors" occur. Production forecasts, 
specifically, are based on assumptions such as expectations of production from existing wells and the level and outcome of future 
drilling activity, and the absence of facility or equipment malfunctions, adverse weather effects, or downturns in commodity prices 
or significant increases in costs, which could make certain drilling activities or production uneconomical. Should any of these 
estimates prove inaccurate, or should the Company's development plans change, actual production could be materially and adversely 
affected. 

Because the Company's proved reserves and production decline continually over time, the Company will need to mitigate these 
declines through drilling and production enhancement initiatives and/or acquisitions.

Producing oil and gas reservoirs are characterized by declining production rates, which vary depending upon reservoir 
characteristics and other factors. Because the Company's proved reserves and production decline continually over time as those 
reserves are produced, the Company will need to mitigate these declines through drilling and production enhancement initiatives 
and/or acquisitions of additional recoverable reserves. There can be no assurance that the Company will be able to develop, exploit, 
find or acquire sufficient additional reserves to replace its current or future production.

The Company may not be able to obtain access on commercially reasonable terms or otherwise to pipelines and storage facilities, 
gathering systems and other transportation, processing, fractionation and refining facilities to market its oil, NGL and gas 
production; the Company relies on a limited number of purchasers for a majority of its products.

The marketing of oil, NGLs and gas production depends in large part on the availability, proximity and capacity of pipelines 
and storage facilities, gathering systems and other transportation, processing, fractionation and refining facilities, as well as the 
existence of adequate markets. If there were insufficient capacity available on these systems, if these systems were unavailable 
to the Company, or if access to these systems were to become commercially unreasonable, the price offered for the Company's 
production could be significantly depressed, or the Company could be forced to shut in some production or delay or discontinue 
drilling plans and commercial production following a discovery of hydrocarbons while it constructs its own facility or awaits the 
availability of third party facilities. The Company also relies (and expects to rely in the future) on facilities developed and owned 
by third parties in order to store, process, transport, fractionate and sell its oil, NGL and gas production. The Company's plans to 
develop and sell its oil and gas reserves could be materially and adversely affected by the inability or unwillingness of third parties 
to provide sufficient transportation, storage or processing and fractionation facilities to the Company, especially in areas of planned 
expansion where such facilities do not currently exist.

 For example, following Hurricanes Gustav and Ike in 2008, certain Permian Basin gas processors were forced to shut down 
their plants due to the shutdown of the Texas Gulf Coast NGL fractionators. The Company was able to produce its oil wells and 
vent or flare the associated gas; however, there is no certainty the Company will be able to vent or flare gas in the future due to 
potential changes in regulations. The amount of oil and gas that can be produced is subject to limitations in certain circumstances, 
such as pipeline interruptions due to scheduled and unscheduled maintenance, excessive pressure, physical damage to the gathering, 
transportation, refining or processing facilities, or lack of capacity on such facilities. The Company has periodically experienced 
high line pressure at its tank batteries, which has occasionally led to the flaring of gas due to the inability of the gas gathering 
systems in the areas to support the increased gas production. The curtailments arising from these and similar circumstances may 
20

PIONEER NATURAL RESOURCES COMPANY

last from a few days to several months, and in many cases, the Company may be provided only limited, if any, notice as to when 
these circumstances will arise and their duration.

To the extent that the Company enters into transportation contracts with pipelines that are subject to FERC regulation, the 
Company is subject to FERC requirements related to use of such capacity. Any failure on the Company's part to comply with 
FERC's regulations and policies or with an interstate pipeline's tariff could result in the imposition of civil and criminal penalties.

A limited number of companies purchase a majority of the Company's oil, NGLs and gas. The loss of a significant purchaser 

could have a material adverse effect on the Company's ability to sell its production.

The Company's operations and drilling activity are concentrated in areas of high industry activity, which may affect its ability 
to obtain the personnel, equipment, services, resources and facilities access needed to complete its development activities as 
planned or result in increased costs.

The Company's operations and drilling activity are concentrated in areas in which industry activity had increased rapidly, 
particularly in the Spraberry field in West Texas and the Eagle Ford Shale play in South Texas. As a result, demand for personnel, 
equipment, power, services and resources, as well as access to transportation, processing and refining facilities in these areas, 
increased, as did the costs for those items. In addition, hydraulic fracturing and other operations require significant quantities of 
water, which supply may be affected by drought conditions. In late 2014, commodity prices began to decline and the demand for 
goods and services has subsided due to reduced activity in these areas. To the extent that commodity prices improve in the future, 
any delay or inability to secure the personnel, equipment, power, services, resources and facilities access necessary for the Company 
to  resume  or  increase  its  development  activities,  including  the  result  of  any  changes  in  laws  or  regulations  applicable  to  the 
Company's operations relating to water usage, could result in oil and gas production volumes being below the Company's forecasted 
volumes. In addition, any such negative effect on production volumes, or significant increases in costs, could have a material 
adverse effect on the Company's results of operations, cash flow and profitability. 

The Company could experience periods of higher costs if commodity prices rise. These increases could reduce the Company's 
profitability, cash flow and ability to complete development activities as planned.

Historically, the Company's capital and operating costs have risen during periods of increasing oil, NGL and gas prices. 
These cost increases result from a variety of factors beyond the Company's control, such as increases in the cost of electricity, 
steel and other raw materials that the Company and its vendors rely upon; increased demand for labor, services and materials as 
drilling activity increases; and increased production and ad valorem taxes. Decreased levels of drilling activity in the oil and gas 
industry in recent periods have led to cost reductions for some drilling equipment, materials and supplies. However, such costs 
may rise faster than increases in the Company's revenue if commodity prices rise, thereby negatively impacting the Company's 
profitability, cash flow and ability to complete development activities as scheduled and on budget. This impact may be magnified 
to the extent that the Company's ability to participate in the commodity price increases is limited by its derivative risk management 
activities.

The refining industry may be unable to absorb rising U.S. oil and condensate production; in such a case, the resulting surplus 
could depress prices and restrict the availability of markets, which could adversely affect the Company's results of operations.

Absent an expansion of U.S. refining capacity, rising U.S. production of oil and condensates could result in a surplus of 
these products in the U.S., which would likely cause prices for these commodities to fall and markets to constrict. Although U.S. 
law was changed in 2015 to permit the export of oil, exports may not occur if demand is lacking in foreign markets or the price 
that can be obtained in foreign markets does not support associated transportation and other costs. In such circumstances, the 
returns on the Company's capital projects would decline, possibly to levels that would make execution of the Company's drilling 
plans uneconomical, and a lack of market for the Company's products could require that the Company shut in some portion of its 
production. If this were to occur, the Company's production and cash flow could decrease, or could increase less than forecasted, 
which could have a material adverse effect on the Company's cash flow and profitability.

The Company's operations are subject to federal, state and local laws and regulations, including those that govern the discharge 
of materials into the environment and environmental protection, which could cause it to suspend or curtail its operations or 
incur substantial costs.

The Company's operations are subject to stringent federal, state and local laws and regulations governing, among other 
things, permits for the drilling of wells, rates of production, the size and shape of drilling and spacing units or proration units, the 
transportation  and  sale  of  oil,  NGLs  and  gas,  worker  health  and  safety,  the  discharge  of  materials  into  the  environment  and 
environmental protection. In connection with its operations, the Company must obtain and maintain numerous permits, approvals, 
and certificates from various federal, state and local governmental authorities, and may incur substantial costs in doing so. For 
example,  there  are  concerns  that  the  injection  of  produced  water  and  other  fluids  resulting  from  oil  and  gas  activities  into 

21

PIONEER NATURAL RESOURCES COMPANY

underground disposal wells regulated under the UIC program may trigger seismic activity in certain areas, including Texas and 
Colorado. Regulators in some states have imposed, or are considering imposing, rules with certain permitting and data gathering 
requirements with respect to such wells. Also, states may issue orders to temporarily shut down or to curtail the injection depth 
of existing disposal wells in the vicinity of seismic events. As another example, in October 2015, the EPA issued a final rule under 
the CAA lowering the National Ambient Air Quality Standard ("NAAQS") for ground-level ozone from 75 parts per billion to 70 
parts per billion under both the primary and secondary standards to provide protection of public health and welfare. Any geographical 
attainment designations the EPA may make or non-attainment area requirements the EPA may issue pursuant to this NAAQS rule 
could result in the reclassification of areas or the imposition of more stringent standards that make it more difficult to construct 
new or modified sources of air pollution in newly designated non-attainment areas. Moreover, states are expected to implement 
regulations implementing the NAAQS rule that may be more stringent than the federal standards. Future compliance with these 
legal requirements or with any new or amended environmental laws or regulations could, among other things, delay, restrict or 
prohibit the issuance of necessary permits, increase the Company's capital expenditures and operating expenses by, for example, 
requiring installation of new emission controls on some of the Company's equipment, and limit or preclude the use of otherwise 
available water sources or disposal wells, any one or more of which developments could have a material adverse effect on the 
Company's business, financial condition and results of operations. As a third example, in connection with the Company's CBM 
operations in the Raton Basin in Colorado, the Colorado Supreme Court affirmed a state water court holding in 2009 that water 
produced in connection with CBM operations should be subject to state water-use regulations, including regulations requiring the 
obtaining of permits for diversion and use of surface and subsurface water, an evaluation of potential competing uses of the water 
and a possible requirement to provide mitigation water supplies for water rights owners impacted by this extraction.

There can be no assurance that present or future regulations will not result in a curtailment of production or processing 
activities, result in a material increase in the costs of production, development, exploration or processing operations or adversely 
affect the Company's future operations and financial condition. Noncompliance with these laws and regulations may subject the 
Company to sanctions, including administrative, civil or criminal penalties, remedial cleanups or corrective actions, delays in 
permitting or performance of projects, natural resource damages and other liabilities. Such laws and regulations may also affect 
the costs of acquisitions. In addition, these laws and regulations are subject to amendment or replacement by more stringent laws 
and regulations. 

The  nature  of  the  Company's  assets  and  production  operations  may  impact  the  environment  or  cause  environmental 
contamination, which could result in material liabilities to the Company.

The Company's assets and production operations may give rise to significant environmental costs and liabilities as a result 
of the Company's handling of petroleum hydrocarbons and wastes, because of air emissions and water discharges related to its 
operations, and due to past industry operations and waste disposal practices. The Company's oil and gas business involves the 
generation, handling, treatment, storage, transport and disposal of wastes, hazardous substances and petroleum hydrocarbons and 
is subject to environmental hazards, such as oil and produced water spills, gas leaks, pipeline and vessel ruptures and unauthorized 
discharges of such wastes, substances and hydrocarbons, that could expose the Company to substantial liability due to pollution 
and other environmental damage. The Company currently owns, leases or operates properties that for many years have been used 
for oil and gas exploration and production activities, and petroleum hydrocarbons, hazardous substances and wastes may have 
been released on or under such properties and could be released during future operations. Joint and several strict liabilities may 
be incurred in connection with such releases of petroleum hydrocarbons, hazardous substances and wastes on, under or from the 
Company's properties. Private parties, including lessors of properties on which the Company operates and the owners or operators 
of  properties  adjacent  to  the  Company's  operations  and  facilities  where  the  Company's  petroleum  hydrocarbons,  hazardous 
substances or wastes are taken for reclamation or disposal, may also have the right to pursue legal actions to enforce compliance 
as well as seek damages for noncompliance with environmental laws and regulations or for personal injury or property damage.

The Company may not be able to recover some or any of these costs from sources of contractual indemnity or insurance, 
as pollution and similar environmental risks generally are not fully insurable, either because such insurance is not available or 
because of the high premium costs and deductibles associated with obtaining such insurance. 

Legislation or regulatory initiatives intended to address seismic activity could restrict the Company's drilling and production 
activities, as well as its ability to dispose of produced water gathered from such activities, which could have a material adverse 
effect on its business.

The Company disposes of fluids, including produced water, from oil and gas production operations directly or through the 
use of third parties. The legal requirements related to the disposal of produced water in underground injection wells are subject 
to change based on concerns of the public or governmental authorities regarding such disposal activities. One such concern relates 
to recent seismic events near underground disposal wells used for the disposal by injection of produced water resulting from oil 
and gas activities. In March 2016, the United States Geological Survey identified at least six states, including Texas and Colorado, 
with areas of increased rates of induced seismicity that could be attributed to fluid injection or oil and gas extraction. In response 
22

PIONEER NATURAL RESOURCES COMPANY

to  concerns  regarding  induced  seismicity,  regulators  in  some  states  have  imposed,  or  are  considering  imposing,  additional 
requirements in the permitting of produced water disposal wells or otherwise to assess any relationship between seismicity and 
the use of such wells. For example, in Texas, the Texas Railroad Commission adopted new rules governing the permitting or re-
permitting of wells used to dispose of produced water and other fluids resulting from the production of oil and gas in order to 
address these seismic activity concerns within the state. Among other things, these rules require companies seeking permits for 
disposal wells to provide seismic activity data in permit applications, provide for more frequent monitoring and reporting for 
certain wells and allow the state to modify, suspend or terminate permits on grounds that a disposal well is likely to be, or determined 
to be, causing seismic activity. In another example, in Colorado, the Colorado Oil and Gas Conservation Commission requires as 
part of its disposal well permitting process a review for seismicity that considers area-specific knowledge of earthquakes and, as 
necessary, the acquisition of geologic and geophysical data to assess seismic potential. In addition, states may issue orders to 
temporarily shut down or to curtail the injection depth of existing wells in the vicinity of seismic events. Furthermore, ongoing 
lawsuits allege that disposal well operations have caused damage to neighboring properties or otherwise violated state and federal 
rules regulating waste disposal. These developments could result in additional regulation and restrictions on the use of injection 
wells by the Company or by commercial disposal well vendors whom the Company may use from time to time to dispose of 
produced water. Increased regulation and attention given to induced seismicity could also lead to greater opposition, including 
litigation to oil and gas activities utilizing injection wells for produced water disposal. Any one or more of these developments 
may result in the Company or its vendors having to limit disposal well volumes, disposal rates and pressures or locations, or require 
the Company or its vendors to shut down or curtail the injection depth of disposal wells, which events could have a material 
adverse effect on the Company's business, financial condition and results of operations.

Climate change legislation and regulatory initiatives restricting emissions of GHGs could result in increased operating costs 
and reduced demand for the oil, NGLs and gas the Company produces.

Climate change continues to attract considerable public and scientific attention. As a result, numerous proposals have been 
made and are likely to continue to be made at the international, national, regional and state levels of government to monitor and 
limit emissions of GHGs. These efforts have included consideration of cap-and-trade programs, carbon taxes, GHG reporting and 
tracking programs, and regulations that directly limit GHG emissions from certain sources.

At the federal level, no comprehensive climate change legislation has been implemented to date. The EPA has, however, 
adopted regulations under the CAA that, among other things, establish certain permits and construction reviews designed to allow 
operations while ensuring the prevention of significant deterioration in air quality by GHG emissions from large stationary sources 
that  are  already  potential  sources  of  significant  pollutant  emissions. The  Company  could  become  subject  to  these  permitting 
requirements and be required to install "best available control technology" to limit emissions of GHGs from any new or significantly 
modified facilities that the Company may seek to construct in the future if they would otherwise emit large volumes of GHGs 
from such sources. The EPA has also adopted rules requiring the reporting of GHG emissions on an annual basis from specified 
GHG  emission  sources  in  the  United  States,  including  certain  oil  and  gas  production  facilities,  which  include  certain  of  the 
Company's  facilities.  Federal  agencies  also  have  begun  directly  regulating  emissions  of  methane,  a  GHG,  from  oil  and  gas 
operations. In June 2016, the EPA published New Source Performance Standards, known as Subpart OOOOa, that require certain 
new, modified or reconstructed facilities in the oil and gas sector to reduce these methane gas and volatile organic compound 
emissions. These Subpart OOOOa standards will expand previously issued New Source Performance Standards, published by the 
EPA in 2012 and known as Subpart OOOO, by using certain equipment-specific emissions control practices, requiring additional 
controls for pneumatic controllers and pumps as well as compressors and imposing leak detection and repair requirements for well 
sites and gas compressor and booster stations. Moreover, in November 2016, the EPA issued a final Information Collection Request 
seeking information about methane emissions from facilities and operators in the oil and gas industry. The EPA has indicated that 
it intends to use the information from this request to develop Existing Source Performance Standards for the oil and gas industry. 
If adopted, these standards would not be imposed directly on regulated entities. Instead, they would become guidelines that the 
states must consider in developing their own rules for regulating sources within their borders. The EPA has indicated that this 
information may also be used to develop standards for certain kinds of new and modified equipment and facilities not currently 
covered under Subpart OOOOa. Additionally, in December 2015, the United States joined the international community at the 21st 
Conference of the Parties of the United Nations Framework Convention on Climate Change in Paris, France that prepared an 
agreement  requiring  member  countries  to  review  and  "represent  a  progression"  in  their  intended  nationally  determined 
contributions, which set GHG emission reduction goals every five years beginning in 2020. This "Paris agreement" was signed 
by the United States in April 2016 and entered into force in November 2016. Although this agreement does not create any binding 
obligations for nations to limit their GHG emissions, it does include pledges to voluntarily limit or reduce future emissions.

The adoption and implementation of any international, federal or state legislation or regulations that requires reporting of 
GHGs or otherwise restricts emissions of GHGs from the Company's equipment and operations could require the Company to 
incur increased operating costs, such as costs to purchase and operate emissions control systems, acquire emissions allowances 
or comply with new regulatory or reporting requirements, including the imposition of a carbon tax, any of which could have an 
adverse effect on the Company's business, financial condition and results of operations. Moreover, such new legislation or regulatory 
23

PIONEER NATURAL RESOURCES COMPANY

programs could also adversely affect demand for the oil and gas the Company produces and lower the value of its reserves. 
Depending on the severity of any such limitations, the effect on the value of the Company's reserves could be significant.

Federal, state and local legislative and regulatory initiatives relating to hydraulic fracturing, as well as governmental reviews 
of  such  activities,  could  result  in  increased  costs  and  additional  operating  restrictions  or  delays  and  adversely  affect  the 
Company's production.

Hydraulic fracturing is a common practice that is used to stimulate production of hydrocarbons from tight formations. The 
Company conducts hydraulic fracturing in the majority of its drilling and completion programs. The process involves the injection 
of water, sand and additives under pressure into targeted subsurface formations to stimulate oil and gas production. The process 
is typically regulated by state oil and gas commissions, but several federal agencies have conducted investigations or asserted 
regulatory authority over certain aspects of the process. For example, in December 2016, the EPA released its final report on the 
potential impacts of hydraulic fracturing on drinking water resources, concluding that "water cycle" activities associated with 
hydraulic fracturing may impact drinking water resources under certain circumstances. Additionally, in February 2014, the EPA 
asserted regulatory authority pursuant to the SDWA's UIC program over hydraulic fracturing activities involving the use of diesel 
and issued guidance covering such activities, and in 2012 and 2016, the EPA issued final CAA regulations governing performance 
standards, including standards for the capture of emissions of methane and volatile organic compounds released from hydraulic 
fracturing activities. Moreover, in June 2016, the EPA published an effluent water final rule prohibiting the discharge of wastewater 
from onshore unconventional oil and gas extraction facilities to publicly owned wastewater treatment plants, and in May 2014, 
the EPA issued a prepublication of its Advance Notice of Proposed Rulemaking regarding Toxic Substances Control Act reporting 
of the chemical substances and mixtures used in hydraulic fracturing. Also, the BLM published a final rule in March 2015 that 
established new or more stringent standards relating to hydraulic fracturing on federal and American Indian lands. In June 2016, 
a Wyoming federal judge struck down this final rule, finding that the BLM lacked congressional authority to promulgate the rule, 
and that decision is currently being appealed by the federal government.

From time to time, the U.S. Congress has considered adopting legislation intended to provide for federal regulation of 
hydraulic fracturing and to require disclosure of the chemicals used in the hydraulic-fracturing process. In addition, certain states 
in which the Company operates, including Texas and Colorado, have adopted, and other states are considering adopting, regulations 
that could impose new or more stringent permitting, disclosure, disposal and well-construction requirements on hydraulic-fracturing 
operations. States could elect to prohibit high volume hydraulic fracturing altogether, following the lead of New York in 2015. 
Also, local land use restrictions, such as city ordinances, may restrict or prohibit drilling in general or hydraulic fracturing in 
particular. For example, in November 2014, voters in the city of Denton, Texas, voted for a ban on hydraulic fracturing within 
city limits. However, the ban was the subject of lawsuits by the Texas General Land Office and the Texas Oil and Gas Law 
Association, and spurred the adoption of Texas House Bill 40 in May 2015, which law provided that the regulation of oil and gas 
operations in Texas was under the exclusive jurisdiction of the state and preempted local regulation of those operations. However, 
pursuant to House Bill 40, municipalities and political subdivisions in Texas have the right to enact "commercially reasonable" 
regulations for surface activities. In the event federal, state or local restrictions pertaining to hydraulic fracturing are adopted in 
areas where the Company is currently conducting operations, or in the future plans to conduct operations, the Company may incur 
additional costs to comply with such requirements that may be significant in nature, experience delays or curtailment in the pursuit 
of exploration, development or production activities, and perhaps be limited or precluded in the drilling of wells or in the volume 
that the Company is ultimately able to produce from its reserves.

Laws and regulations pertaining to threatened and endangered species could delay or restrict the Company's operations and 
cause it to incur substantial costs.

Various federal and state statutes prohibit certain actions that adversely affect endangered or threatened species and their 
habitats, migratory birds, wetlands and natural resources. These statutes include the ESA, the Migratory Bird Treaty Act, the CWA, 
OPA and CERCLA. The U.S. Fish and Wildlife Service (the "FWS") may designate critical habitat and suitable habitat areas that 
it believes are necessary for survival of threatened or endangered species. Any designation by the FWS of a critical or suitable 
habitat with respect to a threatened or endangered species could result in further material restrictions to federal land use and private 
land use and could delay or prohibit land access or oil and gas development. If harm to species or damages to wetlands, habitat 
or natural resources occur or may occur, government entities or, at times, private parties may act to prevent oil and gas exploration 
or development activities or seek damages for harm to species, habitat or natural resources resulting from drilling, construction 
or releases of petroleum hydrocarbons, wastes, hazardous substances or other regulated materials, and, in some cases, may seek 
criminal penalties. Moreover, as a result of one or more settlements entered into by the FWS, the agency is required to make 
determinations  on  the  potential  listing  of  numerous  species  as  endangered  or  threatened  under  the  ESA. The  designation  of 
previously unprotected species as threatened or endangered in areas where the Company conducts operations could cause the 
Company to incur increased costs arising from species protection measures or could result in delays or limitations on its development 
and production activities that could have an adverse effect on the Company's ability to develop and produce reserves. 

24

PIONEER NATURAL RESOURCES COMPANY

The Company is a party to debt instruments, a credit facility and other financial commitments that may restrict its business 
and financing activities.

The Company is a borrower under fixed rate senior notes and maintains a credit facility that is currently undrawn. The 
terms of the Company's borrowings specify scheduled debt repayments and require the Company to comply with certain associated 
covenants and restrictions. The Company's ability to comply with the debt repayment terms, associated covenants and restrictions 
is dependent on, among other things, factors outside the Company's direct control, such as commodity prices and interest rates. 
The  Company  is  also  subject  to  various  commitments  for  leases,  drilling  contracts,  derivative  contracts,  firm  transportation, 
processing and fractionation, and purchase obligations for services and products. The Company's financial commitments could 
have important consequences to its business including, but not limited to, the following:

• 
• 
• 

increasing its vulnerability to adverse economic and industry conditions;
limiting its ability to fund future development activities or engage in future acquisitions; and
placing it at a competitive disadvantage compared to competitors that have less debt and/or fewer financial commitments.

See  "Item  7.  Management's  Discussion  and  Analysis  of  Financial  Condition  and  Results  of  Operations  -  Capital 
Commitments, Capital Resources and Liquidity" and Notes G and J of Notes to Consolidated Financial Statements included in 
"Item 8. Financial Statements and Supplementary Data" for information regarding the Company's outstanding debt and other 
commitments as of December 31, 2016 and the terms associated therewith.

The Company's ability to obtain additional financing is also affected by the Company's debt credit ratings and competition 
for available debt financing. A ratings downgrade could adversely impact the Company's ability to access debt markets, increase 
the borrowing cost under the Company's credit facility and the cost of future debt, and potentially require the Company to post 
letters of credit or other forms of collateral for certain obligations.

 The Company faces significant competition and some of its competitors have resources in excess of the Company's available 
resources.

The oil and gas industry is highly competitive. The Company competes with a large number of companies, producers and 

operators in a number of areas such as:

seeking to acquire oil and gas properties suitable for development or exploration;

• 
•  marketing oil, NGL and gas production; and
• 

seeking to acquire the equipment and expertise, including trained personnel, necessary to evaluate, operate and develop 
its properties.

Some of the Company's competitors are larger and have substantially greater financial and other resources than the Company. 
To a lesser extent, the Company also faces competition from companies that supply alternative sources of energy, such as wind 
or solar power. See "Item 1. Business - Competition, Markets and Regulations" for additional discussion regarding competition.

The Company's sales and purchases of oil, NGLs, gas or other energy commodities, and any derivative activities related to 
such energy commodities, expose the Company to potential regulatory risks.

FERC, the FTC and the CFTC hold statutory authority to monitor certain segments of the physical and futures energy 
commodities markets relevant to the Company's business. These agencies have imposed broad regulations prohibiting fraud and 
manipulation of such markets. With regard to the Company's physical sales and purchases of oil, NGLs, gas or other energy 
commodities, and any derivative activities related to these energy commodities, the Company is required to observe the market-
related  regulations  enforced  by  these  agencies,  which  hold  substantial  enforcement  authority.  Failures  to  comply  with  such 
regulations, as interpreted and enforced, could materially and adversely affect the Company's results of operations and financial 
condition.

Estimates of proved reserves and future net cash flows are not precise. The actual quantities and net cash flows of the Company's 
proved reserves may prove to be lower than estimated.

Numerous uncertainties exist in estimating quantities of proved reserves and future net cash flows therefrom. The estimates 
of proved reserves and related future net cash flows set forth in this Report are based on various assumptions, which may ultimately 
prove to be inaccurate.

Petroleum  engineering  is  a  subjective  process  of  estimating  underground  accumulations  of  oil  and  gas  that  cannot  be 
measured in an exact manner. Estimates of economically recoverable oil and gas reserves and estimates of future net cash flows 
depend upon a number of variable factors and assumptions, including the following:

25

PIONEER NATURAL RESOURCES COMPANY

• 
• 
• 
• 
• 
• 

historical production from the area compared with production from other producing areas;
the quality and quantity of available data;
the interpretation of that data;
the assumed effects of regulations by governmental agencies;
assumptions concerning future commodity prices; and
assumptions  concerning  future  operating  costs,  severance,  ad  valorem  and  excise  taxes,  development  costs, 
transportation costs and workover and remedial costs.

Because all proved reserve estimates are to some degree subjective, each of the following items may differ materially from 

those assumed in estimating proved reserves:

• 
• 
• 
• 

the quantities of oil and gas that are ultimately recovered;
the production costs incurred to recover the reserves;
the amount and timing of future development expenditures; and
future commodity prices.

Furthermore, different reserve engineers may make different estimates of proved reserves and cash flows based on the same 
available data. The Company's actual production, revenues and expenditures with respect to proved reserves will likely be different 
from estimates, and the differences may be material.

As required by the SEC, the estimated discounted future net cash flows from proved reserves are based on average prices 
preceding the date of the estimate and costs as of the date of the estimate, while actual future prices and costs may be materially 
higher or lower. Actual future net cash flows also will be affected by factors such as:

• 
• 
• 
• 

the amount and timing of actual production;
levels of future capital spending;
increases or decreases in the supply of or demand for oil, NGLs and gas; and
changes in governmental regulations or taxation.

Standardized Measure is a reporting convention that provides a common basis for comparing oil and gas companies subject 
to the rules and regulations of the SEC. In general, it requires the use of commodity prices that are based upon a historical 12-
month  unweighted  average,  as  well  as  operating  and  development  costs  being  incurred  at  the  end  of  the  reporting  period. 
Consequently, it may not reflect the prices ordinarily received or that will be received for future oil and gas production because 
of seasonal price fluctuations or other varying market conditions, nor may it reflect the actual costs that will be required to produce 
or develop the oil and gas properties. Accordingly, estimates included herein of future net cash flows may be materially different 
from the future net cash flows that are ultimately received. In addition, the ten percent discount factor, which is required by the 
SEC to be used in calculating discounted future net cash flows for reporting purposes, may not be the most appropriate discount 
factor based on interest rates in effect from time to time and risks associated with the Company or the oil and gas industry in 
general. Therefore, the estimates of discounted future net cash flows or Standardized Measure in this Report should not be construed 
as accurate estimates of the current market value of the Company's proved reserves.

The Company's business could be negatively affected by security threats, including cybersecurity threats, and other disruptions.

As an oil and gas producer, the Company faces various security threats, including cybersecurity threats to gain unauthorized 
access  to  sensitive  information  or  to  render  data  or  systems  unusable;  threats  to  the  security  of  the  Company's  facilities  and 
infrastructure or third party facilities and infrastructure, such as processing plants and pipelines; and threats from terrorist acts. 
The potential for such security threats has subjected the Company's operations to increased risks that could have a material adverse 
effect on the Company's business. In particular, the Company's implementation of various procedures and controls to monitor and 
mitigate security threats and to increase security for the Company's information, facilities and infrastructure may result in increased 
capital and operating costs. Costs for insurance may also increase as a result of security threats, and some insurance coverage may 
become more difficult to obtain, if available at all. Moreover, there can be no assurance that such procedures and controls will be 
sufficient to prevent security breaches from occurring. If any of these security breaches were to occur, they could lead to losses 
of sensitive information, critical infrastructure or capabilities essential to the Company's operations and could have a material 
adverse effect on the Company's reputation, financial position, results of operations and cash flows. Cybersecurity attacks in 
particular are becoming more sophisticated and include, but are not limited to, malicious software, attempts to gain unauthorized 
access to data and systems, and other electronic security breaches that could lead to disruptions in critical systems, unauthorized 
release of confidential or otherwise protected information, and corruption of data. These events could damage the Company's 
reputation and lead to financial losses from remedial actions, loss of business or potential liability.

 A failure by purchasers of the Company's production to satisfy their obligations to the Company could require the Company 
to recognize a pre-tax charge in earnings and have a material adverse effect on the Company's results of operation.

26

PIONEER NATURAL RESOURCES COMPANY

The Company relies on a limited number of purchasers to purchase a majority of its products. To the extent that purchasers 
of the Company's production rely on access to the credit or equity markets to fund their operations, there is a risk that those 
purchasers could default in their contractual obligations to the Company if such purchasers were unable to access the credit or 
equity markets for an extended period of time. If for any reason the Company were to determine that it was probable that some 
or all of the accounts receivable from any one or more of the purchasers of the Company's production were uncollectible, the 
Company would recognize a pre-tax charge in the earnings of that period for the probable loss.

Declining general economic, business or industry conditions could have a material adverse effect on the Company's results of 
operations.

Since  2010,  the  economies  in  the  United  States  and  certain  other  countries  have  continued  to  stabilize  with  resulting 
improvements in industrial demand and consumer confidence. However, other economies, such as those of certain European, 
Asian and South American nations, continue to face economic struggles or slowing economic growth and, should these conditions 
worsen, there could be a significant adverse effect on global financial markets and commodity prices. In addition, continued 
hostilities in the Middle East and the occurrence or threat of terrorist attacks in the United States or other countries could adversely 
affect the global economy. If the economic climate in the United States or abroad were to deteriorate, demand for petroleum 
products could diminish, which could depress the prices at which the Company could sell its oil, NGLs and gas and ultimately 
decrease the Company's cash flows and profitability.

Changes to U.S. federal income tax legislation could eliminate or postpone certain tax deductions that currently are available 
with respect to oil and gas exploration and development, or could impose new or additional taxes, and such changes could 
have an adverse effect on the Company's financial position, results of operations and cash flows.

In past years, legislation has been proposed that would, if enacted into law, make significant changes to U.S. tax laws, 
including to certain key U.S. federal income tax incentives currently available to oil and gas companies. Such legislative changes 
have included, but not been limited to, (i) the repeal of the percentage depletion allowance for oil and gas properties, (ii) the 
elimination of current deductions for intangible drilling and development costs, (iii) the elimination of the deduction for certain 
domestic production activities and (iv) an extension of the amortization period for certain geological and geophysical expenditures. 
U.S. Congress could consider, and could include, some or all of these proposals as part of tax reform legislation to accompany 
lower federal income tax rates. Moreover, other more general features of tax reform legislation, including changes to cost recovery 
rules and to the deductibility of interest expense, may be developed that also would change the taxation of oil and gas companies. 
It is unclear whether these or similar changes will be enacted and, if enacted, how soon any such changes could take effect. In 
addition, the Company, from time to time, recognizes tax benefits from uncertain tax positions if it believes, based upon the 
technical merits of the position, that the position will more likely than not be sustained upon examination by the taxing authorities. 
For example, as of December 31, 2016, the Company had unrecognized tax benefits of $112 million resulting from research and 
experimental expenditures related to horizontal drilling and completions innovations. If all or a portion of the unrecognized tax 
benefit is sustained upon examination by the taxing authorities, the tax benefit will be recognized as a reduction to the Company's 
deferred tax liability and will affect the Company's effective tax rate in the period it is recognized. The passage of any legislation 
as a result of these proposals, any other similar changes in U.S. federal income tax laws or an unfavorable determination in regard 
to the Company's uncertain tax position could eliminate or postpone certain tax deductions that currently are available with respect 
to oil and gas development, or increase costs, and any such changes could have an adverse effect on the Company's financial 
position, results of operations and cash flows.

The Company's use of seismic data is subject to interpretation and may not accurately identify the presence of oil and gas, 
which could adversely affect the results of its drilling operations.

Even when properly used and interpreted, 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. As a result, the Company's drilling activities may not be successful or economical. In 
addition, the use of advanced technologies, such as 3-D seismic data, requires greater pre-drilling expenditures than traditional 
drilling strategies, and the Company could incur losses as a result of such expenditures.

The enactment of derivatives legislation could have an adverse effect on the Company's ability to use derivative instruments 
to reduce the effect of commodity price, interest rate and other risks associated with its business.

The Dodd-Frank Wall Street Reform and Consumer Protection Act (the "Dodd-Frank Act") enacted in July 2010, established 
federal oversight and regulation of the over-the-counter derivatives market and entities, such as the Company, that participate in 
that market. The Dodd-Frank Act requires the CFTC and the SEC to promulgate rules and regulations for its implementation. 
Although the CFTC has issued final regulations to implement significant aspects of the legislation, others remain to be finalized 
or implemented and it is not possible at this time to predict when this will be accomplished.

27

PIONEER NATURAL RESOURCES COMPANY

In October 2011, the CFTC issued regulations to set position limits for certain futures and option contracts in the major 
energy markets and for swaps that are their economic equivalents. The initial position limits rule was vacated by the United States 
District Court for the District of Columbia in September 2012. However, in November 2013, the CFTC proposed new rules that 
would place limits on positions in certain futures and options contracts and equivalent swaps for or linked to certain physical 
commodities, subject to exceptions for certain bona fide derivative transactions. As these new position limit rules are not yet final, 
the impact of those provisions on the Company is uncertain at this time. 

The CFTC has designated certain interest rate swaps and credit default swaps for mandatory clearing and the associated 
rules also will require the Company, in connection with covered derivative activities, to comply with clearing and trade-execution 
requirements or take steps to qualify for an exemption to such requirements. The CFTC has not yet proposed rules designating 
any other classes of swaps, including physical commodity swaps, for mandatory clearing. Although the Company believes it 
qualifies for the end-user exception from the mandatory clearing requirements for swaps entered to mitigate its commercial risks, 
the application of the mandatory clearing and trade execution requirements to other market participants, such as swap dealers, 
may change the cost and availability of the swaps that the Company uses. If the Company's swaps do not qualify for the commercial 
end-user exception, or if the cost of entering into uncleared swaps becomes prohibitive, the Company may be required to clear 
such transactions. The ultimate effect of the proposed rules and any additional regulations on the Company's business is uncertain.  

In addition, certain banking regulators and the CFTC have adopted final rules establishing minimum margin requirements 
for uncleared swaps. Although the Company expects to qualify for the end-user exception from margin requirements for swaps 
entered into to manage its commercial risks, the application of such requirements to other market participants, such as swap dealers, 
may change the cost and availability of the swaps that the Company uses. If any of the Company's swaps do not qualify for the 
commercial end-user exception, the posting of collateral could reduce its liquidity and cash available for capital expenditures and 
could reduce its ability to manage commodity price volatility and the volatility in its cash flows.

The full impact of the Dodd-Frank Act and related regulatory requirements upon the Company's business will not be known 
until the regulations are implemented and the market for derivatives contracts has adjusted. The Dodd-Frank Act and any new 
regulations could significantly increase the cost of derivative contracts, materially alter the terms of derivative contracts, reduce 
the availability of derivatives to protect against risks the Company encounters and reduce the Company's ability to monetize or 
restructure its existing derivative contracts. If the Company reduces its use of derivatives as a result of the Dodd-Frank Act and 
regulations, the Company's results of operations may become more volatile and its cash flows may be less predictable, which 
could adversely affect the Company's ability to plan for and fund capital expenditures. Finally, the Dodd-Frank Act was intended, 
in part, to reduce the volatility of oil and gas prices, which some legislators attributed to speculative trading in derivatives and 
commodity instruments related to oil and gas. The Company's revenues could therefore be adversely affected if a consequence of 
the Dodd-Frank Act and implementing regulations is to lower commodity prices. Any of these consequences could have a material 
adverse effect on the Company, its financial condition and its results of operations. In addition, the European Union and other 
non-U.S. jurisdictions are implementing regulations with respect to the derivatives market. To the extent the Company transacts 
with counterparties in foreign jurisdictions, it may become subject to such regulations. At this time, the impact of such regulations 
is not clear.

The future of the CFTC's rulemaking remains uncertain under the new presidential administration. Recent rule proposals 
by the CFTC suggest that final consideration of major proposed rules will be made by the new administration. During the last 
quarter of 2016, the CFTC decided to re-propose, rather than finalize, certain regulations, including (a) limitations on speculative 
futures and swap positions, (b) regulations on automated trading algorithms and (c) limitations on swap capital requirements for 
swap dealers and major swap participants. In December 2016, the Chairman of the CFTC stated that the CFTC decided to re-
propose, rather than finalize, the above regulations, in part based on the uncertainty over the next presidential administration. It 
is also uncertain whether the current Chairman of the CFTC and other CFTC staff will remain with the CFTC under the new 
presidential administration. The current Chairman's term expires in April 2017, and two seats are currently open for Republican 
appointees, leaving the CFTC's future rulemaking unclear.

Provisions of the Company's charter documents and Delaware law may inhibit a takeover, which could limit the price investors 
might be willing to pay in the future for the Company's common stock.

Provisions in the Company's certificate of incorporation and bylaws may have the effect of delaying or preventing an 
acquisition of the Company or a merger in which the Company is not the surviving company and may otherwise prevent or slow 
changes in the Company's board of directors and management. In addition, because the Company is incorporated in Delaware, it 
is governed by the provisions of Section 203 of the Delaware General Corporation Law. These provisions could discourage an 
acquisition of the Company or other change in control transactions and thereby negatively affect the price that investors might be 
willing to pay in the future for the Company's common stock.

28

PIONEER NATURAL RESOURCES COMPANY

The Company's sand mining operations are subject to operating risks that are often beyond the Company's control, and such 
risks may not be covered by insurance.

Ownership of industrial sand mining operations is subject to risks, many of which are beyond the Company's control. These 

risks include:

• 
• 
• 
• 
• 

• 
• 
• 
• 
• 
• 
• 
• 
• 
• 

unusual or unexpected geological formations or pressures;
cave-ins, pit wall failures or rock falls;
unanticipated ground, grade or water conditions;
inclement or hazardous weather conditions, including flooding, and the physical impacts of climate change;
environmental hazards, such as unauthorized spills, releases and discharges of wastes, vessel ruptures and emission of 
unpermitted levels of pollutants;
changes in laws and regulations;
inability to acquire or maintain necessary permits or mining or water rights;
restrictions on blasting operations;
inability to obtain necessary production equipment or replacement parts;
reduction in the amount of water available for processing;
technical difficulties or failures;
labor disputes;
late delivery of supplies;
fires, explosions or other accidents; and
facility interruptions or shutdowns in response to environmental regulatory actions.

Any of these risks could result in damage to, or destruction of, the Company's mining properties or production facilities, 
personal injury, environmental damage, delays in mining or processing, losses or possible legal liability. Not all of these risks are 
insurable,  and  the  Company's  insurance  coverage  contains  limits,  deductibles,  exclusions  and  endorsements. The  Company's 
insurance coverage may not be sufficient to meet its needs in the event of loss and any such loss may have a material adverse 
effect on the Company. 

The Company's estimates of sand reserves and resource deposits are imprecise and actual reserves could be less than estimated.

The Company bases its sand reserve and resource estimates on engineering, economic and geological data assembled and 
analyzed  by  engineers  and  geologists,  which  are  periodically  reviewed  by  outside  firms.  However,  commercial  sand  reserve 
estimates are necessarily imprecise and depend to some extent on statistical inferences drawn from available drilling data, which 
may prove unreliable. There are numerous uncertainties inherent in estimating quantities and qualities of commercial sand reserves 
and  costs  to  mine  recoverable  reserves,  including  many  factors  beyond  the  Company's  control.  Estimates  of  economically 
recoverable  commercial  sand  reserves  necessarily  depend  on  a  number  of  factors  and  assumptions,  all  of  which  may  vary 
considerably from actual results, such as:

• 

• 

• 

geological and mining conditions or effects from prior mining that may not be fully identified by available data or that 
may differ from experience;
assumptions concerning future prices of commercial sand products, operating costs, mining technology improvements, 
development costs and reclamation costs; and
assumptions  concerning  future  effects  of  regulation,  including  the  issuance  of  required  permits  and  taxes  by 
governmental agencies.

The Company's sand mining operations are subject to extensive environmental and occupational health and safety regulations 
that impose significant costs and potential liabilities. 

The Company's sand mining operations are subject to a variety of federal, state and local environmental requirements 
affecting  the  mining  and  mineral  processing  industry,  including,  among  others,  those  relating  to  employee  health  and  safety, 
environmental permitting and licensing, air emissions and water discharges, GHG emissions, water pollution, waste management 
and disposal, remediation of soil and groundwater contamination, land use restrictions, reclamation and restoration of properties, 
wastes, hazardous substances and other regulated materials and natural resources. Some environmental laws impose substantial 
penalties for noncompliance, and others, such as the CERCLA, impose strict, retroactive and joint and several liability for the 
remediation  of  releases  of  hazardous  substances.  Failure  to  properly  handle,  transport,  store  or  dispose  of  wastes,  hazardous 
substances  and  other  regulated  materials  or  otherwise  conduct  the  Company's  sand  mining  operations  in  compliance  with 
environmental laws could expose the Company to liability for governmental penalties, cleanup costs and civil or criminal liability 
associated with releases of such materials into the environment, damages to property or natural resources and other damages, as 
well  as  potentially  impair  the  Company's  ability  to  conduct  its  sand  mining  operations.  In  addition,  environmental  laws  and 
regulations are subject to amendment, replacement or re-interpretation by more stringent and comprehensive legal requirements. 
29

PIONEER NATURAL RESOURCES COMPANY

While the Company's environmental compliance costs with existing laws and regulations have not historically had a material 
adverse effect on its results of operations, there can be no assurance that such costs will not be material in the future. Moreover, 
such future compliance with existing, new or amended laws and regulations could restrict the Company's ability to expand its 
facilities or extract mineral deposits or could require the Company to acquire costly equipment or to incur other significant expenses 
in connection with its sand mining operations, which restrictions or costs could have a material adverse effect on the Company's 
sand mining operations.

Any failure by the Company to comply with applicable environmental laws and regulations in connection with its sand 

mining operations may cause governmental authorities to take actions that could adversely affect the Company, including:

• 
• 
• 

• 

issuance of administrative, civil and criminal penalties;
denial, modification or revocation of permits or other authorizations;
imposition  of  injunctive  obligations  or  other  limitations  on  the  Company's  operations,  including  interruptions  or 
cessation of operations; and
requirements to perform site investigatory, remedial or other corrective actions.

In addition to environmental regulation, the Company's sand mining operations are subject to laws and regulations relating 
to worker health and safety, including such matters as human exposure to crystalline silica dust. Several federal and state regulatory 
authorities, including the U.S. Mining Safety and Health Administration, may continue to propose changes in their regulations 
regarding workplace exposure to crystalline silica, such as permissible exposure limits and required controls and personal protective 
equipment. 

The Company's sand mining operations are subject to the Federal Mine Safety and Health Act of 1977 and amending legislation, 
which impose stringent health and safety standards on numerous aspects of the Company's sand mining operations.

The Company's sand mining operations are subject to the Federal Mine Safety and Health Act of 1977, as amended by the 
Mine Improvement and New Emergency Response Act of 2006, which imposes stringent health and safety standards on numerous 
aspects  of  mineral  extraction  and  processing  operations,  including  the  training  of  personnel,  operating  procedures,  operating 
equipment and other matters. This Act, as amended, is a strict liability statute and any failure by the Company to comply with 
such existing or any future standards, or any more stringent interpretation or enforcement thereof, could have a material adverse 
effect on the Company's sand mining operations or otherwise impose significant restrictions on the Company's ability to conduct 
mineral extraction and processing operations.

The Company's sand mining operations are subject to extensive governmental regulations that impose significant costs and 
liabilities. 

In addition to the environmental and occupational health and safety regulation discussed above, the Company's sand mining 
operations  are  also  subject  to  extensive  governmental  regulation  on  matters  such  as  permitting  and  licensing  requirements, 
reclamation and restoration of mining properties after mining is completed, and the effects that mining have on groundwater quality 
and availability. Also, the Company's sand mining operations require numerous governmental, environmental, mining and other 
permits, water rights and approvals authorizing operations at each sand mining facility.  

In order to obtain permits, renewals of permits or other approvals in the future for its sand mining operations, the Company 
may be required to prepare and present data to governmental authorities pertaining to the effect that any such activities may have 
on the environment. Obtaining or renewing required permits or approvals may be delayed or prevented due to opposition by 
neighboring  property  owners,  members  of  the  public  or  other  third  parties  and  other  factors  beyond  the  Company's  control. 
Moreover, issuance of any permits, permit renewals or other approvals by governmental agencies may be conditioned on new or 
modified requirements or procedures with respect to mining that may be costly or time-consuming to implement. A decision by 
a governmental agency or other third party to deny or delay issuing a new or renewed permit or approval, or to revoke or substantially 
modify an existing permit or approval, could have a material adverse effect on the Company's sand mining operations at the 
affected facility. Current or future regulations could have a material adverse effect on the Company's sand mining operations and 
the Company may not be able to renew or obtain permits or other approvals in the future.

The Company's sand mining operations and hydraulic fracturing may result in silica-related health issues and litigation that 
could have a material adverse effect on the Company. 

The inhalation of respirable crystalline silica dust is associated with the lung disease silicosis. There is evidence of an 
association between crystalline silica exposure or silicosis and lung cancer and a possible association with other diseases, including 
immune system disorders, such as scleroderma. These health risks have been, and may continue to be, a significant issue confronting 
the commercial sand industry. The actual or perceived health risks of mining, processing and handling sand could materially and 

30

 
PIONEER NATURAL RESOURCES COMPANY

adversely affect the Company through the threat of product liability or personal injury lawsuits, recently adopted OSHA silica 
regulations and increased scrutiny by federal, state and local regulatory authorities. 

Premier  Silica,  the  Company's  wholly-owned  sand  mining  subsidiary,  is  named  as  a  defendant,  usually  among  many 
defendants, in numerous products liability lawsuits brought by or on behalf of current or former employees of Premier Silica's 
commercial customers alleging damages caused by silica exposure. As of December 31, 2016, Premier Silica was the subject of 
silica exposure claims from approximately 19 plaintiffs. The great majority of these claims have been inactive for many years due 
to the plaintiffs' failure to meet specific legal requirements to advance their claims. Almost all of the claims pending against Premier 
Silica arise out of the alleged use of Premier Silica's sand products in foundries or as an abrasive blast media and have been filed 
in the states of Texas, Mississippi and Ohio, although some cases have been brought in other jurisdictions over the years. 

It is possible that Premier Silica will have additional silica-related claims filed against it, including claims that allege silica 
exposure for periods for which there is not insurance coverage. In addition, it is possible that similar claims could be asserted 
arising out of the Company's other operations, including its hydraulic fracturing operations. Any pending or future claims or 
inadequacies of insurance coverage or contractual indemnification could have a material adverse effect on the Company's results 
of operations.

ITEM 1B. UNRESOLVED STAFF COMMENTS

None. 

ITEM 2.

PROPERTIES

Reserve Estimation Procedures and Audits

The information included in this Report about the Company's proved reserves as of December 31, 2016, 2015 and 2014 is 
based on evaluations prepared by the Company's engineers and audited by Netherland, Sewell & Associates, Inc. ("NSAI"), with 
respect to the Company's major properties. The Company has no oil and gas reserves from non-traditional sources. Additionally, 
the Company does not provide optional disclosure of probable or possible reserves. 

Reserve  estimation  procedures.  The  Company  has  established  internal  controls  over  reserve  estimation  processes  and 
procedures to support the accurate and timely preparation and disclosure of reserve estimates in accordance with SEC requirements. 
These controls include oversight of the reserves estimation reporting processes by Pioneer's Corporate Reserves Group ("Corporate 
Reserves"), and annual external audits of substantial portions of the Company's proved reserves by NSAI.

Individual asset teams are responsible for the day-to-day management of the oil and gas activities in each of the Company's 
Permian Basin, South Texas, Raton and West Panhandle asset areas (the "Asset Teams"). The Company's Asset Teams are each 
staffed with reservoir engineers and geoscientists who prepare reserve estimates at the end of each calendar quarter for the assets 
that they manage, using reservoir engineering information technology. There is shared oversight of the Asset Teams' reservoir 
engineers by the Asset Teams' managers and the Vice President of Corporate Reserves, each of whom is in turn subject to direct 
or indirect oversight by the Company's management committee ("MC"). The Company's MC is comprised of its Chief Executive 
Officer, Chief Financial Officer and other executive officers. The Asset Teams' reserve estimates are reviewed by the Asset Team 
reservoir engineers before being submitted to Corporate Reserves for further review.

The reserve estimates are summarized in reserve reconciliations that quantify reserve changes since the previous year end 
as revisions of previous estimates, purchases of minerals-in-place, improved recovery, extensions and discoveries, production and 
sales of minerals-in-place. All reserve estimates, material assumptions and inputs used in reserve estimates and significant changes 
in reserve estimates are reviewed for engineering and financial appropriateness and compliance with SEC and GAAP standards 
by Corporate Reserves, in consultation with the Company's accounting and financial management personnel. Annually, the MC 
reviews the reserve estimates and any differences with the reserve auditors (for the portion of the reserves audited by NSAI) on 
a consolidated basis before these estimates are approved. The engineers and geoscientists who participate in the reserve estimation 
and  disclosure  process  periodically  attend  training  provided  by  external  consultants  and  through  internal  Pioneer  programs. 
Additionally, Corporate Reserves has prepared and maintains written policies and guidelines for the Asset Teams to reference on 
reserve estimation and preparation to promote consistency in the preparation of the Company's reserve estimates and compliance 
with the SEC reserve estimation and reporting rules.

Proved reserves audits. The proved reserve audits performed by NSAI for the years ended December 31, 2016, 2015 and 
2014, in the aggregate, represented 77 percent, 82 percent and 80 percent of the Company's year-end 2016, 2015 and 2014 proved 

31

PIONEER NATURAL RESOURCES COMPANY

reserves, respectively; and 93 percent, 97 percent and 91 percent of the Company's year-end 2016, 2015 and 2014 associated pre-
tax present value of proved reserves discounted at ten percent, respectively.

NSAI follows the general principles set forth in the "Standards Pertaining to the Estimating and Auditing of Oil and Gas 
Reserve Information" promulgated by the Society of Petroleum Engineers (the "SPE"). A reserve audit as defined by the SPE is 
not the same as a financial audit. The SPE's definition of a reserve audit includes the following concepts:

•  A reserve audit is an examination of reserve information that is conducted for the purpose of expressing an opinion as 
to whether such reserve information, in the aggregate, is reasonable and has been presented in conformity with the 
2007  SPE  publication  entitled  "Standards  Pertaining  to  the  Estimating  and  Auditing  of  Oil  and  Gas  Reserves 
Information."

•  The estimation of reserves is an imprecise science due to the many unknown geologic and reservoir factors that cannot 
be estimated through sampling techniques. Since reserves are only estimates, they cannot be audited for the purpose 
of verifying exactness. Instead, reserve information is audited for the purpose of reviewing in sufficient detail the 
policies, procedures and methods used by a company in estimating its reserves so that the reserve auditors may express 
an opinion as to whether, in the aggregate, the reserve information furnished by a company is reasonable.

•  The methods and procedures used by a company, and the reserve information furnished by a company, must be reviewed 
in  sufficient  detail  to  permit  the  reserve  auditor,  in  its  professional  judgment,  to  express  an  opinion  as  to  the 
reasonableness of the reserve information. The auditing procedures require the reserve auditor to prepare their own 
estimates of reserve information for the audited properties.

In conjunction with the audit of the Company's proved reserves and associated pre-tax present value discounted at ten 
percent, Pioneer provided to NSAI its external and internal engineering and geoscience technical data and analyses. Following 
NSAI's review of that data, it had the option of honoring Pioneer's interpretations, or making its own interpretations. No data was 
withheld from NSAI. NSAI accepted without independent verification the accuracy and completeness of the historical information 
and data furnished by Pioneer with respect to ownership interest, oil and gas production, well test data, commodity prices, operating 
and development costs, and any agreements relating to current and future operations of the properties and sales of production. 
However, if in the course of its evaluations something came to its attention that brought into question the validity or sufficiency 
of any such information or data, NSAI did not rely on such information or data until it had satisfactorily resolved its questions 
relating thereto or had independently verified such information or data.

In the course of its evaluations, NSAI prepared, for all of the audited properties, its own estimates of the Company's proved 
reserves and the pre-tax present values of such reserves discounted at ten percent. NSAI reviewed its audit differences with the 
Company, and, in a number of cases, held meetings with the Company to review additional reserves work performed by the 
Company's technical teams and any updated performance data related to the proved reserve differences. Such data was incorporated, 
as appropriate, by both parties into the proved reserve estimates. NSAI's estimates, including any adjustments resulting from 
additional data, of those proved reserves and the pre-tax present value of such reserves discounted at ten percent did not differ 
from Pioneer's estimates by more than ten percent in the aggregate. However, when compared on a lease-by-lease, field-by-field 
or area-by-area basis, some of the Company's estimates were greater than those of the reserve auditors and some were less than 
the estimates of the reserve auditors. When such differences do not exceed ten percent in the aggregate and NSAI is satisfied that 
the proved reserves and pre-tax present values of such reserves discounted at ten percent are reasonable and that its audit objectives 
have been met, NSAI will issue an unqualified audit opinion. Remaining differences are not resolved due to the limited cost benefit 
of continuing such analyses by the Company and the reserve auditors. At the conclusion of the audit process, it was NSAI's opinion, 
as set forth in its audit letter, which is included as an exhibit to this Report, that Pioneer's estimates of the Company's proved oil 
and gas reserves and associated pre-tax present values discounted at ten percent are, in the aggregate, reasonable and have been 
prepared in accordance with the "Standards Pertaining to the Estimating and Auditing of Oil and Gas Reserves Information" 
promulgated by the SPE.

See "Item 1A. Risk Factors," "Critical Accounting Estimates" in "Item 7. Management's Discussion and Analysis and Results 
of Operations" and "Item 8. Financial Statements and Supplementary Data" for additional discussions regarding proved reserves 
and their related cash flows.

Qualifications  of  proved  reserves  preparers  and  auditors.  Corporate  Reserves  is  staffed  by  petroleum  engineers  with 
extensive industry experience and is managed by the Vice President of Corporate Reserves, the technical person that is primarily 
responsible for overseeing the Company's reserves estimates. These individuals meet the professional qualifications of reserves 
estimators and reserves auditors as defined by the "Standards Pertaining to the Estimating and Auditing of Oil and Gas Reserves 
Information," promulgated by the SPE. The qualifications of the Vice President of Corporate Reserves include 39 years of experience 
as a petroleum engineer, with 32 years focused on reserves reporting for independent oil and gas companies, including Pioneer. 
His educational background includes an undergraduate degree in Chemical Engineering and a Masters of Business Administration 
degree in Finance. He is also a Chartered Financial Analyst Charterholder.

32

PIONEER NATURAL RESOURCES COMPANY

NSAI provides worldwide petroleum property analysis services for energy clients, financial organizations and government 
agencies. NSAI was founded in 1961 and performs consulting petroleum engineering services under Texas Board of Professional 
Engineers Registration No. F-2699. The technical person primarily responsible for auditing the Company's reserves estimates has 
been a practicing consulting petroleum engineer at NSAI since 1983 and has over 38 years of practical experience in petroleum 
engineering, including over 35 years of experience in the estimation and evaluation of proved reserves. He graduated with a 
Bachelor  of  Science  degree  in  Chemical  Engineering  in  1978  and  meets  or  exceeds  the  education,  training  and  experience 
requirements  set  forth  in  the  "Standards  Pertaining  to  the  Estimating  and Auditing  of  Oil  and  Gas  Reserves  Information" 
promulgated by the board of directors of the SPE.

Technologies used in proved reserves estimates. Proved undeveloped reserves include those 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 
completion. Undeveloped reserves may be classified as proved reserves on undrilled acreage directly offsetting development areas 
that are reasonably certain of production when drilled, or where reliable technology provides reasonable certainty of economic 
producibility. Undrilled locations may be classified as having undeveloped proved reserves only if an ability and intent has been 
established to drill the reserves within five years, unless specific circumstances justify a longer time period.

In the context of reserves estimations, reasonable certainty means a high degree of confidence that the quantities will be 
recovered and reliable technology means a grouping of one or more technologies (including computational methods) that has been 
field-tested and has been demonstrated to provide reasonable certain results with consistency and repeatability in the formation 
being evaluated or in an analogous formation. In estimating proved reserves, the Company uses several different traditional methods 
such as performance-based methods, volumetric-based methods and analogy with similar properties. In addition, the Company 
utilizes additional technical analysis such as seismic interpretation, wireline formation tests, geophysical logs and core data to 
provide  incremental  support  for  more  complex  reservoirs.  Information  from  this  incremental  support  is  combined  with  the 
traditional technologies outlined above to enhance the certainty of the Company's proved reserve estimates.

Proved Reserves

As of December 31, 2016, 2015 and 2014, the Company's oil and gas proved reserves are located entirely in the United 
States. See Note C of Notes to Consolidated Financial Statements included in "Item 8. Financial Statements and Supplementary 
Data" for additional details of the Company's discontinued operations. The following table provides information regarding the 
Company's proved reserves as of December 31, 2016, 2015 and 2014:

December 31, 2016:
Developed
Undeveloped

Total proved reserves

December 31, 2015:
Developed
Undeveloped

Total proved reserves

December 31, 2014:
Developed
Undeveloped

Total proved reserves

Summary of Oil and Gas Proved Reserves as of Fiscal Year-End
Based on Average Fiscal-Year Prices

Proved Reserve Volumes

Oil
(MBbls)

NGLs
(MBbls)

Gas
(MMcf) (a)

Total
(MBOE)

%

343,515
34,681
378,196

126,928
10,013
136,941

1,215,861
48,868
1,264,729

673,085
52,840
725,925

266,657
45,313
311,970

112,376
13,968
126,344

1,284,680
71,807
1,356,487

593,146
71,249
664,395

267,193
84,891
352,084

130,206
39,038
169,244

1,486,289
182,583
1,668,872

645,113
154,360
799,473

93%
7%
100%

89%
11%
100%

81%
19%
100%

 ______________________
(a) 

Total proved gas reserves contain 137,853 MMcf, 144,955 MMcf and 191,932 MMcf of gas that the Company expected 
to be produced and used as field fuel (primarily for compressors), rather than being delivered to a sales point as of December 
31, 2016, 2015 and 2014, respectively.

33

 
 
 
 
PIONEER NATURAL RESOURCES COMPANY

The Company's Standardized Measure of total proved reserves as of December 31, 2016 was $4.2 billion, including $4.0 
billion and $178 million related to proved developed and proved undeveloped reserves, respectively. The Company's Standardized 
Measure of total proved reserves as of December 31, 2015 was $3.2 billion, including $3.0 billion and $245 million related to 
proved developed and proved undeveloped reserves, respectively. The Company's Standardized Measure of total proved reserves 
as  of  December  31,  2014  was  $7.8  billion,  including  $6.4  billion  and  $1.4  billion  related  to  proved  developed  and  proved 
undeveloped reserves, respectively. 

See the "Unaudited Supplementary Information" section included in "Item 8. Financial Statements and Supplementary 
Data" for additional details of the estimated quantities of the Company's proved reserves, including explanations for material 
changes in proved developed and proved undeveloped reserves.  

Description of Properties

The following tables summarize the Company's development and exploration/extension drilling activities during 2016:

Permian Basin
South Texas—Eagle Ford Shale

Total

Permian Basin
South Texas—Eagle Ford Shale

Total

Beginning
Wells In 
Progress

27
6
33

Beginning
Wells In
Progress

77
23
100

Development Drilling

Wells
Spud

Successful
Wells

Ending
Wells In
Progress

18
—
18

37
2
39

8
4
12

Exploration/Extension Drilling

Wells
Spud

Successful
Wells

247
1
248

205
10
215

Ending
Wells In
Progress

119
14
133

The following table summarizes the Company's average daily oil, NGL, gas and total production by asset area during 2016:

Permian Basin
South Texas—Eagle Ford Shale
Raton Basin
West Panhandle
South Texas—Other
Other
Total

Oil (Bbls)

NGLs (Bbls)

Gas (Mcf) (a)

Total (BOE)

117,619
12,070
—
2,682
1,302
4
133,677

29,743
10,260
—
3,289
211
1
43,504

140,789
71,402
96,634
9,722
21,388
31
339,966

170,827
34,231
16,106
7,591
5,077
10
233,842

 _____________________
(a)  Gas production excludes gas produced and used as field fuel.

34

 
 
 
 
 
 
 
PIONEER NATURAL RESOURCES COMPANY

The following table summarizes the Company's costs incurred by asset area during 2016:

Property
Acquisition Costs

Proved

Unproved

Exploration
Costs

Development
Costs

Asset
Retirement 
Obligations

Total

Permian Basin
South Texas—Eagle Ford Shale
Raton Basin
West Panhandle
South Texas—Other
Other
Total

Permian Basin

$

$

76
—
—
—
—
—
76

$

$

368
—
—
—
—
—
368

$

$

(in millions)
$

1,408
37
1
1
—
5
1,452

$

450
29
3
8
2
—

$

492   $

15
(3)
12
1
(4)
—
21

$

$

2,317
63
16
10
(2)
5
2,409

In November 2016, the U.S. Geological Survey ("USGS") announced, based on its estimates, that the Wolfcamp shale in 
the Permian Basin is the largest continuous oil field in the United States. Pioneer is the largest acreage holder in the Spraberry/
Wolfcamp field, with approximately 800,000 gross acres (690,000 net acres). Pioneer's interests in the northern portion of the play 
comprise approximately 600,000 gross acres and its interests in the southern portion of the play, where the Company has a joint 
venture with Sinochem, comprise approximately 200,000 gross acres. The oil produced out of the Spraberry/Wolfcamp field is 
West Texas Intermediate Sweet, and the gas produced is casinghead gas with an average energy content of 1,400 Btu. The oil and 
gas are produced primarily from seven formations, the upper and lower Spraberry, the Jo Mill, the Dean, the Wolfcamp, the Strawn 
and the Atoka, at depths ranging from 7,000 feet to 14,000 feet. The Company believes that it has significant resource potential 
within its Spraberry and Wolfcamp formation acreage, based on its extensive geologic data covering the Spraberry and Wolfcamp 
A, B, C and D intervals and its drilling results to date. 

During 2016, the Company completed 201 horizontal wells in the northern portion of the play and 41 horizontal wells in 
the southern portion of the play. In the northern portion of the play, approximately 50 percent of the horizontal wells placed on 
production were Wolfcamp B interval wells, approximately 30 percent were Wolfcamp A interval wells and approximately 20 
percent were Lower Spraberry Shale interval wells. All of the wells placed on production in the southern portion of the play were 
Wolfcamp B interval wells.

The Company plans to operate 18 rigs in the Spraberry/Wolfcamp field in 2017, with 14 rigs operating in the northern 
portion of the play and four rigs operating in the southern portion of the play. During 2017, the Company expects to place on 
production approximately 260 horizontal wells (220 horizontal wells in the northern portion of the play and 40 horizontal wells 
in the southern portion of the play). Approximately 55 percent of the horizontal wells are planned to be drilled in the Wolfcamp 
B interval, 30 percent in the Wolfcamp A interval and 15 percent in the Lower Spraberry Shale interval. The Company also plans 
to drill a few wells to appraise the shallower Clearfork formation, the Jo Mill interval within the Spraberry formation and the 
Wolfcamp D interval in the Wolfcamp formation during 2017. The Company expects to spend $2.4 billion in the Spraberry/
Wolfcamp field during 2017, including $1.9 billion of horizontal drilling and completion capital, $265 million for tank battery 
and disposal facilities, $115 million for gas processing facilities and $110 million for land, science and other costs. 

In August 2016, the Company completed the acquisition of approximately 28,000 net acres in the Permian Basin, with net 
production of approximately 1,400 BOEPD, from an unaffiliated third party for $428 million. The fair value of the assets acquired 
included $347 million of unproved property, $79 million of proved property and $5 million of other property and equipment. The 
fair value of the asset retirement obligations and other liabilities assumed were $2 million and $1 million, respectively.

The Company continues to utilize its integrated services to control well costs and operating costs in addition to supporting 
the execution of its drilling and production activities in the Spraberry/Wolfcamp field. The majority of 2017 drilling activities will 
be supported by six of the Company's eight pressure pumping fleets. The Company also owns other field service equipment that 
supports its drilling and production operations, including pulling units, fracture stimulation tanks, water transport trucks, hot oilers, 
blowout preventers, construction equipment and fishing tools. In addition, Premier Silica (the Company's wholly-owned sand 
mining subsidiary) is supplying high-quality and logistically advantaged brown sand for proppant, which is being used to fracture 
stimulate horizontal wells in the Spraberry and Wolfcamp Shale intervals.

The Company has been and continues to aggressively pursue initiatives to improve drilling and completion efficiencies and 
reduce costs. The most significant drilling and completion cost reductions to date have been for casing, tubing, materials for drilling 

35

 
 
 
 
 
 
 
 
PIONEER NATURAL RESOURCES COMPANY

and fracture stimulation, fuel charges, labor and transportation, rental equipment and well services, while efficiency gains include 
reducing the time needed to drill and complete the wells and optimizing completions in the Spraberry and Wolfcamp Shale intervals. 

The Company's long-term growth plan continues to focus on optimizing the development of the field and addressing the 
future requirements for water sourcing and disposal, field infrastructure, gas processing, sand, pipeline takeaway for its products, 
oilfield services, tubulars, electricity, buildings and roads. 

The Company is constructing a field-wide water distribution system to reduce the cost of water for drilling and completion 
activities and to ensure that adequate supplies of non-potable water are available to support the Company's long-term growth plan 
for the Spraberry/Wolfcamp field. The 2017 capital program includes $160 million for expansion of the mainline system, subsystems 
and frac ponds to efficiently deliver water to Pioneer's drilling locations. The Company recently signed an agreement with the 
City of Midland to upgrade the City's wastewater treatment plant in return for a dedicated long-term supply of water from the 
plant. The 2017 program includes $10 million of engineering capital to begin work on this upgrade. Pioneer expects to spend 
approximately $110 million over the 2017 through 2019 period for the Midland plant upgrade. In return, the Company will receive 
approximately two billion barrels of low-cost, non-potable water over a 28-year contract period (up to 240 thousand barrels per 
day) to support its completion operations. The water contract is subject to State of Texas legislative validation during the second 
quarter of 2017.

The Company's sand mine in Brady, Texas, which is strategically located within close proximity (approximately190 miles) 
of the Spraberry/Wolfcamp field, provides a secure sand source for the Company's horizontal drilling program. The 2017 capital 
program includes $30 million to complete an optimization project for the Company's existing sand mining facilities. This project 
is expected to improve yields and reduce the Company's overall cost of sand supplies. The 2017 capital program also includes 
$45 million for upgrades and maintenance to the six pressure pumping fleets that the Company plans to operate during 2017. 

South Texas Eagle Ford Shale

The Company completed 12 Eagle Ford Shale wells during 2016. The Company plans to spend $95 million of capital in 
2017 to drill and complete 11 new Eagle Ford Shale wells and to complete nine wells that were drilled but not completed in 2016. 
The objective of this drilling program is to test longer laterals with higher intensity completions.  

 In July 2015, the Company completed the sale of its 50.1 percent equity interest in EFS Midstream to an unaffiliated third 
party, with the Company receiving total consideration of $1.0 billion, of which $530 million was received at closing and the 
remaining $501 million was received in July 2016. Associated with the sale, the Company recorded a pretax gain of $777 million
during 2015. 

Due to the Company's reduction in drilling activity in 2015 and 2016, the Company expects to continue to incur fees 
associated with unused firm transportation, gathering, processing and fractionation commitments over the term of the obligations. 
See "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations - Capital Commitments, 
Capital  Resources  and  Liquidity"  and  Note  J  of  Notes  to  Consolidated  Financial  Statements  included  in  "Item  8.  Financial 
Statements and Supplementary Data" for additional information about the Company's commitments. 

Raton Basin

The Raton Basin properties are located in the southeast portion of Colorado. The Company owns approximately 185,000 
gross acres (165,000 net acres) in the center of the Raton Basin and produces CBM gas from the coal seams in the Vermejo and 
Raton formations from approximately 2,300 wells. 

West Panhandle 

The West Panhandle properties are located in the panhandle region of Texas. These stable, long-lived reserves are attributable 
to the Red Cave, Brown Dolomite, Granite Wash and fractured Granite formations at depths no greater than 3,500 feet. The 
Company's gas has an average energy content of 1,400 Btu and is produced from approximately 700 wells on more than 246,000 
gross acres (239,000 net acres) covering over 375 square miles. The Company controls 100 percent of the wells, production 
equipment, gathering system and the Fain gas processing plant for the field. As this field is characterized by very low reservoir 
pressure, Pioneer continually works to improve its overall processing and gathering system efficiency. As part of its cost reduction 
and efficiency improvement initiatives, the Company plans to connect its gathering system to a third-party system with excess 
gas processing capacity during March 2017 and will cease recovery of natural gas liquids at its Fain plant. 

See Note D of Notes to Consolidated Financial Statements included in "Item 8. Financial Statements and Supplementary 
Data" for additional information about the impairment charges recorded during 2016 and 2015 to reduce the carrying value of the 
Company's properties in the West Panhandle, South Texas - Eagle Ford Shale and South Texas - Other fields.

36

PIONEER NATURAL RESOURCES COMPANY

Divestitures Recorded as Discontinued Operations 

The Company completed the divestitures of its net assets in the Hugoton field in southwest Kansas, its net assets in the 
Barnett Shale field in North Texas and 100 percent of the capital stock in Pioneer Alaska in September 2014, September 2014 and 
April 2014, respectively. 

The Company has reflected the results of operations of its Hugoton assets, its Barnett Shale assets and Pioneer Alaska (prior 
to their sale) as discontinued operations in the accompanying consolidated statements of operations. See Note C of Notes to 
Consolidated Financial Statements included in "Item 8. Financial Statements and Supplementary Data" for additional information 
regarding the Company's divestitures of its Hugoton and Barnett Shale assets and Pioneer Alaska.

Selected Oil and Gas Information

The following tables set forth selected oil and gas information for the Company as of and for each of the years ended 
December 31, 2016, 2015 and 2014. Because of normal production declines, increased or decreased drilling activities and the 
effects of acquisitions or divestitures, the historical information presented below should not be interpreted as being indicative of 
future results.

Production, price and cost data. The price that the Company receives for the oil and gas it produces is largely a function 
of market supply and demand. Demand is affected by general economic conditions, weather and other seasonal conditions, including 
hurricanes and tropical storms. Over or under supply of oil or gas can result in substantial price volatility. Historically, commodity 
prices have been volatile and the Company expects that volatility to continue in the future. A decline in oil and gas prices or poor 
drilling results could have a material adverse effect on the Company's financial position, results of operations, cash flows, quantities 
of oil and gas reserves that may be economically produced and the Company's ability to access capital markets.

The following tables set forth production, price and cost data with respect to the Company's properties for 2016, 2015 and 
2014. These amounts represent the Company's historical results from operations without making pro forma adjustments for any 
acquisitions, divestitures or drilling activity that occurred during the respective years. The production amounts will not match the 
proved reserve volume tables in the "Unaudited Supplementary Information" section included in "Item 8. Financial Statements 
and Supplementary Data" because field fuel volumes are included in the proved reserve volume tables.

37

 
PIONEER NATURAL RESOURCES COMPANY

PRODUCTION, PRICE AND COST DATA

Year Ended December 31, 2016

Spraberry
Field

Eagle Ford Shale
Field

Raton
Field

Total Company
Fields

Production information:
Annual sales volumes:

Oil (MBbls)

NGLs (MBbls)

Gas (MMcf)

Total (MBOE)

Average daily sales volumes:

Oil (Bbls)

NGLs (Bbls)

Gas (Mcf)

Total (BOE)

Average prices:
Oil (per Bbl)

NGL (per Bbl)

Gas (per Mcf)

Revenue (per BOE)

Average costs (per BOE):

Production costs:
Lease operating

Third-party transportation charges

Net natural gas plant/gathering

Workover

Total

Production and ad valorem taxes:
Ad valorem

Production

Total

Depletion expense

43,049

10,886

51,528

62,523

117,619

29,743

140,788

170,827

40.30

13.48

2.11

31.84

5.35

0.20

(0.43)

0.35

5.47

0.50

1.44

1.94

19.62

$

$

$

$

$

$

$

$

$

$

$

$

$

$

$

$

$

$

4,418

3,755

26,133

12,528

12,070

10,260

71,402

34,231

35.60

12.86

2.36

21.32

2.87

6.81

(0.04)

0.40

10.04

0.31

0.36

0.67

12.61

$

$

$

$

$

$

$

$

$

—

—

35,368

5,895

—

—

96,634

16,106

— $

— $

1.87

11.25

5.07

2.93

1.96

0.32

10.28

0.07

0.01

0.08

5.42

$

$

$

$

$

$

$

48,926

15,922

124,428

85,586

133,677

43,504

339,966

233,842

39.65

13.49

2.11

28.25

5.02

1.41

0.01

0.35

6.79

0.46

1.14

1.60

16.77

38

 
 
PIONEER NATURAL RESOURCES COMPANY

PRODUCTION, PRICE AND COST DATA - (continued)

Production information:
Annual sales volumes:

Oil (MBbls)

NGLs (MBbls)

Gas (MMcf)

Total (MBOE)

Average daily sales volumes:

Oil (Bbls)

NGLs (Bbls)

Gas (Mcf)

Total (BOE)

Average prices:
Oil (per Bbl)

NGL (per Bbl)

Gas (per Mcf)

Revenue (per BOE)

Average costs (per BOE):

Production costs:
Lease operating

Third-party transportation charges

Net natural gas plant/gathering

Workover

Total

Production and ad valorem taxes:
Ad valorem

Production (a)

Total

Depletion expense

Year Ended December 31, 2015

Spraberry
Field

Eagle Ford Shale
Field

Raton
Field

Total Company
Fields

30,312

8,507

41,577

45,748

83,046

23,306

113,909

125,336

44.30

12.95

2.29

33.84

9.08

0.26

(0.45)

0.61

9.50

0.92

1.62

2.54

22.12

$

$

$

$

$

$

$

$

$

$

$

$

$

$

$

$

$

$

6,450

4,230

35,220

16,550

17,670

11,590

96,492

45,343

41.74

13.90

2.69

25.55

3.21

4.90

0.02

0.99

9.12

0.50

0.65

1.15

15.80

$

$

$

$

$

$

$

$

$

—

—

40,761

6,794

—

—

111,675

18,613

— $

— $

2.22

13.30

6.04

3.12

1.82

—

10.98

0.27

(0.01)

0.26

5.19

$

$

$

$

$

$

$

38,452

14,086

131,642

74,478

105,347

38,592

360,662

204,050

43.55

13.31

2.40

29.25

7.24

1.60

0.16

0.62

9.62

0.76

1.19

1.95

18.01

 ______________________
(a) The credit amount in production taxes per BOE for the Raton field is due to the receipt of a severance tax refund from the 
state of Colorado.

39

 
 
 
PIONEER NATURAL RESOURCES COMPANY

PRODUCTION, PRICE AND COST DATA - (continued)

Year Ended December 31, 2014

Included in 
Continuing Operations

Included in 
Discontinued 
Operations

Spraberry
Field

Eagle Ford
Shale Field

Raton
Field

Total
Company
Fields

United States

Total

23,701

7,504

29,608

36,139

64,935

20,558

81,117

99,012

86.51

27.06

3.81

65.48

$

$

$

$

11.57

$

0.25

(1.23)

0.94

11.53

1.43

3.18

4.61

20.41

$

$

$

$

6,498

4,939

32,733

16,892

17,802

13,530

89,679

46,279

81.84

25.49

4.35

47.36

3.46

3.10

0.03

0.33

6.92

0.83

1.22

2.05

11.49

—

—

45,373

7,562

—

—

124,310

20,718

31,767

14,106

123,860

66,516

87,034

38,646

339,341

182,237

$

$

$

$

$

$

$

$

$

— $

— $

4.05

24.30

7.18

2.95

2.25

—

12.38

0.73

0.36

1.09

4.48

$

$

$

$

$

$

$

85.29

27.06

4.10

54.11

8.66

1.29

(0.20)

0.65

10.40

1.13

2.18

3.31

15.19

$

$

$

$

$

$

$

$

$

$

$

$

$

$

$

$

$

$

951

1,655

13,826

4,911

2,605

4,535

37,881

13,453

93.10

30.30

4.30

40.36

8.99

1.88

0.88

0.40

12.15

1.25

1.11

2.36

2.10

$

$

$

$

$

$

$

$

$

32,718

15,761

137,686

71,427

89,639

43,181

377,222

195,690

85.51

27.40

4.12

53.71

8.66

1.36

(0.12)

0.64

10.54

1.14

2.11

3.25

14.29

Production information:
Annual sales volumes:

Oil (MBbls)

NGLs (MBbls)

Gas (MMcf)

Total (MBOE)

Average daily sales volumes:

Oil (Bbls)

NGLs (Bbls)

Gas (Mcf)

Total (BOE)

Average prices:

Oil (per Bbl)

NGL (per Bbl)

Gas (per Mcf)

Revenue (per BOE)

Average costs (per BOE):

Production costs:
Lease operating

Third-party transportation charges

Net natural gas plant/gathering

Workover

Total

Production and ad valorem taxes:
Ad valorem

Production

Total

Depletion expense

40

 
  
  
 
PIONEER NATURAL RESOURCES COMPANY

Productive wells. Productive wells consist of producing wells and wells capable of production, including shut-in wells and 
gas wells awaiting pipeline connections to commence deliveries and oil wells awaiting connection to production facilities. One 
or more completions in the same well bore are counted as one well. Any well in which one of the multiple completions is an oil 
completion is classified as an oil well. 

The following table sets forth the number of productive oil and gas wells attributable to the Company's properties as of 

December 31, 2016:

PRODUCTIVE WELLS

Gross Productive Wells

Net Productive Wells

Oil

Gas

Total

Oil

Gas

Total

7,582

3,744

11,326

6,825

3,153

9,978

Leasehold acreage. The following table sets forth information about the Company's developed, undeveloped and royalty 

leasehold acreage as of December 31, 2016:

LEASEHOLD ACREAGE

Developed Acreage

Undeveloped Acreage

Gross Acres

Net Acres

Gross Acres

Net Acres

Royalty Acreage

1,361,161

1,154,333

226,041

187,030

243,044

The following table sets forth the expiration dates of the leases on the Company's gross and net undeveloped acres as of 

December 31, 2016:

2017
2018
2019
2020
2021
Thereafter
Total

Acres Expiring (a)

Gross

133,558
64,490
9,981
160
3,564
14,288
226,041

Net
100,129
63,122
9,981
160
1,300
12,338
187,030

 _____________________
(a)  Acres expiring are based on contractual lease maturities.

Of the 163,251 net acres expiring in 2017 and 2018, 132,945 net acres (81 percent) are concentrated in eastern Colorado. 
Over the past few years, the Company has conducted limited exploratory activities across this acreage. The Company's exploratory 
drilling activities have not resulted in discovering commercial quantities of hydrocarbons; therefore, no proved reserves have been 
attributed to any of this acreage. The remainder of the net undeveloped acres expiring over the next two year period is primarily 
concentrated in the Permian Basin in West Texas, where the Company has an active drilling program and ongoing efforts to extend 
leases that may not be drilled prior to expiration. The Company currently has no proved undeveloped reserve locations scheduled 
to be drilled after lease expiration.

41

 
 
 
 
 
 
PIONEER NATURAL RESOURCES COMPANY

Drilling and other exploratory and development activities. The following table sets forth the number of gross and net wells 
drilled by the Company during 2016, 2015 and 2014 that were productive or dry holes. This information should not be considered 
indicative of future performance, nor should it be assumed that there was any correlation between the number of productive wells 
drilled and the oil and gas reserves generated thereby or the costs to the Company of productive wells compared to the costs of 
dry holes.

DRILLING ACTIVITIES

Productive wells:
Development
Exploratory

Dry holes:

Development
Exploratory

Total
Success ratio (a)

Gross Wells

Net Wells

Year Ended December 31,

Year Ended December 31,

2016

2015

2014

2016

2015

2014

39
215

—
—
254
100%

116
218

—
2
336
99%

309
330

—
5
644
99%

32
194

—
—
226
100%

78
151

—
1
230
99%

258
239

—
5
502
99%

 ______________________
(a) 

Represents the ratio of those wells that were successfully completed as producing wells or wells capable of producing to 
total wells drilled and evaluated.

Present activities. The following table sets forth information about the Company's wells that were in process of being drilled 

as of December 31, 2016:

Development
Exploratory
Total

ITEM 3.

LEGAL PROCEEDINGS

Gross Wells
12
133
145

Net Wells

10
121
131

The Company is party to various proceedings and claims incidental to its business. While many of these matters involve 
inherent  uncertainty,  the  Company  believes  that  the  amount  of  the  liability,  if  any,  ultimately  incurred  with  respect  to  these 
proceedings and claims will not have a material adverse effect on the Company's consolidated financial position as a whole or on 
its liquidity, capital resources or future annual results of operations. See Note J of Notes to Consolidated Financial Statements 
included  in  "Item  8.  Financial  Statements  and  Supplementary  Data"  for  additional  information  regarding  legal  proceedings 
involving the Company.

ITEM 4.

MINE SAFETY DISCLOSURES

The Company's sand mines are subject to regulation by the Federal Mine Safety and Health Administration under the Federal 
Mine Safety and Health Act of 1977, as amended by the Mine Improvement and New Emergency Response Act of 2006. Information 
concerning mine safety violations or other regulatory matters required by Section 1503(a) of the Dodd-Frank Wall Street Reform 
and Consumer Protection Act and Item 104 of Regulation S-K is included in Exhibit 95.1 to this Annual Report filed on Form 10-
K.  

42

 
 
 
 
 
 
 
 
PIONEER NATURAL RESOURCES COMPANY

EXECUTIVE OFFICERS OF THE REGISTRANT

The following table sets forth certain information as of the date of this Report regarding the Company's executive 
officers. All of the Company's executive officers serve at the discretion of the Company's board of directors. There are no 
family relationships among any of the Company's directors or executive officers.

Name

Position

Age

Scott D. Sheffield

Timothy L. Dove

Mark S. Berg

Chris J. Cheatwood

Richard P. Dealy

J.D. Hall

Executive Chairman

President and Chief Executive Officer

Executive Vice President, Corporate/Operations

Executive Vice President, Business Development and Geoscience

Executive Vice President and Chief Financial Officer

Executive Vice President, Permian Operations

Kenneth H. Sheffield, Jr.

Executive Vice President, STAT, WAT and Corporate Engineering

William F. Hannes

Frank E. Hopkins

Mark H. Kleinman

Teresa A. Fairbrook

Senior Vice President, Special Projects

Senior Vice President, Investor Relations

Senior Vice President and General Counsel

Vice President and Chief Human Resources Officer

Margaret M. Montemayor

Vice President and Chief Accounting Officer

Stephanie D. Stewart

Vice President and Chief Information Officer

64

60

58

56

50

51

56

57

68

55

43

39

48

Scott D. Sheffield

Mr. Sheffield was named Executive Chairman of the Board on January 1, 2017, pursuant to the succession process announced 
in May 2016. He retired as Chief Executive Officer of the Company effective December 31, 2016, a position he had held since 
August 1997. He was first named Chairman of the Board of Directors in August 1999. He also served as President of the Company 
from August 1997 to November 2004. Mr. Sheffield had served as Chief Executive Officer and director from June 2007, and as 
Chairman of the Board from May 2008, of the general partner of Pioneer Southwest Energy Partners L.P. ("Pioneer Southwest"), 
which was a majority-owned subsidiary of the Company, until the Company's acquisition of Pioneer Southwest in December 2013. 
Mr. Sheffield was the Chairman of the Board of Directors and Chief Executive Officer of Parker & Parsley Petroleum Company, 
a predecessor of the Company (together with its predecessor companies, "Parker & Parsley") from January 1989 until the Company 
was formed in August 1997. Mr. Sheffield joined Parker & Parsley as a petroleum engineer in 1979, was promoted to Vice President 
- Engineering in September 1981, was elected President and a Director in April 1985, and became Parker & Parsley's Chairman 
of the Board and Chief Executive Officer in January 1989. Before joining Parker & Parsley, Mr. Sheffield was employed as a 
production  and  reservoir  engineer  for Amoco  Production  Company.  Mr.  Sheffield  also  serves  as  a  director  of  The Williams 
Companies, Inc., a provider of large-scale infrastructure for natural gas and natural gas products, and Santos Limited, an Australian 
exploration and production company, and as a member of the advisory boards of the Center for Global Energy Policy at Columbia 
University and L1 Energy (UK) LLP, a private investment firm. Mr. Sheffield is a distinguished graduate of the University of 
Texas with a Bachelor of Science degree in Petroleum Engineering. 

Timothy L. Dove 

Mr. Dove has served as the Company's President and Chief Executive Officer since January 1, 2017. He held the positions 
for the Company of President and Chief Operating Officer from December 2004 to January 2017, Executive Vice President and 
Chief Financial Officer from February 2000 to November 2004 and Executive Vice President - Business Development from August 
1997 to January 2000. Mr. Dove also served as President and Chief Operating Officer of the general partner of Pioneer Southwest 
from June 2007 through the Company's acquisition of Pioneer Southwest in December 2013. Mr. Dove joined Parker & Parsley 
in 1994 as a Vice President and was promoted to Senior Vice President - Business Development in October 1996, in which position 
he served until the Company's formation in August 1997. Before joining Parker & Parsley, Mr. Dove was employed with Diamond 
Shamrock Corp and its successor, Maxus Energy Corp., in various capacities in international exploration and production, marketing, 
refining,  and  planning  and  development.  Mr.  Dove  earned  a  Bachelor  of  Science  degree  in  Mechanical  Engineering  from 
Massachusetts Institute of Technology and received his Master of Business Administration from the University of Chicago.

43

PIONEER NATURAL RESOURCES COMPANY

Mark S. Berg 

Mr. Berg was elected the Company's Executive Vice President and General Counsel in April 2005, serving in those capacities 
until January 2014, at which time he assumed broader executive responsibilities, most recently being elected to serve as Executive 
Vice President, Corporate/Operations in August 2015. Mr. Berg also served as Executive Vice President and General Counsel of 
the general partner of Pioneer Southwest from June 2007 through the Company's acquisition of Pioneer Southwest in December 
2013. Prior to joining the Company, Mr. Berg served as Executive Vice President, General Counsel and Secretary of American 
General Corporation, a Fortune 200 diversified financial services company, from 1997 through 2002. Subsequent to the sale of 
American General to American International Group, Inc., Mr. Berg joined Hanover Compressor Company as Senior Vice President, 
General Counsel and Secretary. He served in that capacity from May 2002 through April 2004. Mr. Berg began his career in 1983 
with the Houston-based law firm of Vinson & Elkins L.L.P. He was a partner with the firm from 1990 through 1997. Mr. Berg 
graduated Magna Cum Laude and Phi Beta Kappa with a Bachelor of Arts degree from Tulane University in 1980. He earned his 
Juris Doctorate with honors from the University of Texas School of Law in 1983.

Chris J. Cheatwood 

Mr. Cheatwood was elected the Company's Executive Vice President, Business Development and Geoscience in November 
2011. Mr. Cheatwood had previously served the Company as Executive Vice President, Business Development and Technology 
since February 2010, as Executive Vice President, Geoscience from November 2007 until February 2010, as Executive Vice 
President - Worldwide Exploration from January 2002 until November 2007, as Senior Vice President - Worldwide Exploration 
from December 2000 to January 2002, and as Vice President - Domestic Exploration from July 1998 to December 2000. Mr. 
Cheatwood also served as an Executive Vice President of the general partner of Pioneer Southwest from June 2007 through the 
Company's acquisition of Pioneer Southwest in December 2013. Before joining the Company, Mr. Cheatwood spent ten years 
with Exxon Corporation. Mr. Cheatwood is a graduate of the University of Oklahoma with a Bachelor of Science degree in Geology 
and earned his Master of Science degree in Geology from the University of Tulsa.

Richard P. Dealy

Mr. Dealy was elected the Company's Executive Vice President and Chief Financial Officer in November 2004. Mr. Dealy 
held positions for the Company as Vice President and Chief Accounting Officer from February 1998 to November 2004, and Vice 
President and Controller from August 1997 to January 1998. Mr. Dealy also served as Executive Vice President, Chief Financial 
Officer, Treasurer and Director of the general partner of Pioneer Southwest from June 2007 through the Company's acquisition 
of Pioneer Southwest in December 2013. Mr. Dealy joined Parker & Parsley in July 1992 and was promoted to Vice President 
and Controller in 1996, in which position he served until August 1997. He is a Certified Public Accountant, and before joining 
Parker & Parsley, he was employed by KPMG LLP. Mr. Dealy graduated with honors from Eastern New Mexico University with 
a Bachelor of Business Administration degree in Accounting and Finance and is a Certified Public Accountant.

J. D. Hall

Mr. Hall was elected Executive Vice President, Permian Operations, in August 2015. Mr. Hall had previously held positions 
for the Company as Executive Vice President, Southern Wolfcamp Operations from August 2014 to August 2015, Senior Vice 
President, South Texas Operations from June 2013 to August 2014, Vice President, South Texas Operations from February 2013 
to June 2013, Vice President, South Texas Asset Team from September 2012 to February 2013, and Vice President, Eagle Ford 
Asset Team from January 2010 to September 2012. Prior to his positions in South Texas, he was the Operations Manager in Alaska 
from January 2005 to January 2010. He previously held several other positions with the Company, including managing offshore, 
onshore and international projects. He began his career with a predecessor company, MESA, Inc. ("MESA"), in 1989. He has a 
Bachelor of Science degree in Mechanical Engineering from Texas Tech University and is a Registered Professional Engineer in 
Texas.

Kenneth H. Sheffield, Jr. 

Mr. Sheffield was elected as Executive Vice President, STAT (the Company's South Texas Asset Team), WAT (the Company's 
Western Asset Team) and Corporate Engineering in August 2015. Mr. Sheffield has previously served the Company in a number 
of executive positions, including Executive Vice President, South Texas Operations from August 2014 to August 2015, Senior 
Vice President, Operations and Engineering from June 2013 to August 2014, Vice President, Corporate Engineering from November 
2011 to June 2013, and President of the Company's Alaska subsidiary from September 2002 to November 2011. Mr. Sheffield 
joined MESA in June 1982 and held a number of supervisory and technical positions with MESA in the areas of drilling, production, 
reservoir  engineering  and  acquisitions  until  being  promoted  to Vice  President Acquisitions  &  Development  in  1996.  He  is  a 
graduate of Texas A&M University with a Bachelor of Science degree in Petroleum Engineering.

44

PIONEER NATURAL RESOURCES COMPANY

William F. Hannes

Mr. Hannes was elected the Company's Senior Vice President, Special Projects in January 2017. Mr. Hannes had previously 
served the Company as Senior Vice President, Special Management Committee Advisor since August 2014, as Executive Vice 
President,  Southern Wolfcamp  Operations  from  February  2013  until August  2014,  as  Executive Vice  President,  South Texas 
Operations from February 2010 until February 2013, as Executive Vice President, Business Development from December 2007 
until February 2010, as Executive Vice President, Worldwide Business Development from November 2005 until December 2007, 
and as Vice President, Engineering and Development from September 2003 until November 2005. Mr. Hannes joined Parker & 
Parsley in July 1997 as Director of Business Development, and continued to serve the Company in this capacity after the Company's 
formation in August 1997 until he was promoted to Vice President - Engineering and Development in June 2001, which position 
he held until November 2005. Prior to joining Parker & Parsley, Mr. Hannes held engineering positions with Mobil Corporation 
and  Superior  Oil  Company.  Mr.  Hannes  earned  his  Bachelor  of  Science  degree  in  Petroleum  Engineering  from Texas A&M 
University.

Frank E. Hopkins

Mr.  Hopkins  was  elected  the  Company's  Senior  Vice  President,  Investor  Relations  in August  2011.  Mr.  Hopkins  had 
previously held the position of Vice President, Investor Relations since joining the Company in February 2005. Before joining 
the Company, Mr. Hopkins was with Exxon Mobil Corporation where he served as General Manager, Strategic Planning for the 
Global Services Company, and as Deputy Manager, Investor Relations. He also served in various capacities with Mobil Corporation, 
including Manager, Investor Relations and Assistant Controller. Mr. Hopkins earned his Bachelor of Science degree in Business 
Administration from Penn State University and also participated in the executive education program at the Kellogg School of 
Management of Northwestern University.

Mark H. Kleinman

Mr.  Kleinman  was  elected  Senior Vice  President  and  General  Counsel  in  January  2014.  He  also  held  the  positions  of 
Corporate Secretary from June 2005 through August 2015, Vice President from May 2006 until January 2014 and Chief Compliance 
Officer from June 2005 until May 2013. Mr. Kleinman also served as Vice President and Secretary of the general partner of Pioneer 
Southwest from June 2007 until April 2008, and as its Vice President and Chief Compliance Officer from April 2008 through the 
Company's acquisition of Pioneer Southwest in December 2013. Prior to joining the Company, Mr. Kleinman was Vice President 
and General Counsel of Inet Technologies, Inc., a communications software provider, from 2000 until its acquisition in 2004, and 
Assistant General Counsel of Sterling Software, Inc., a computer software provider, from 1996 until its acquisition in 2000. Mr. 
Kleinman earned a Bachelor of Arts degree in Government from the University of Texas and graduated, with honors, from the 
University of Texas School of Law. 

Teresa A. Fairbrook

Ms. Fairbrook was elected the Company's Vice President and Chief Human Resources Officer in March 2016, prior to 
which she had served as Vice President, Human Resources since February 2013. She joined the Company in 1999, serving in a 
number of positions in the Human Resources Department. Prior to joining the Company, Ms. Fairbrook was in human resources 
at Dal-Tile Corporation in Dallas, Texas, where she held a variety of roles in employee relations, recruiting and benefits. Ms. 
Fairbrook received a Bachelor of Business Administration degree from St. Mary's University in San Antonio, Texas, with an 
emphasis in Human Resource Management, and is a Certified Compensation Professional.

Margaret M. Montemayor

Ms. Montemayor was elected the Company's Vice President and Chief Accounting Officer in March 2014. Ms. Montemayor 
had previously served the Company as Vice President and Corporate Controller since January 2014, Corporate Controller from 
April 2012 to December 2013, and Director of Technical Accounting and Financial Reporting from June 2010 to March 2012. 
Prior  to  joining  the  Company,  Ms.  Montemayor  served  as  Manager  at  PricewaterhouseCoopers  LLP  since  June  2006.  Ms. 
Montemayor graduated from St. Mary's University in San Antonio, Texas with a Bachelor of Business Administration degree in 
Accounting and a Master of Business Administration and is a Certified Public Accountant.

Stephanie D. Stewart

Ms. Stewart joined the Company in June 2014 as Vice President and Chief Information Officer. Before joining the Company, 
she served as Vice President of E&P Data and Analytics at Devon Energy at the end of her 12-year tenure there. Prior to Devon, 
she  worked  in  information  technology  at  Williams  Energy  and  BP  Amoco.  Ms.  Stewart  earned  a  Bachelor  of  Business 
Administration degree from the University of Oklahoma and her Executive MBA in Energy from the University of Oklahoma's 
Price College of Business.

Officers are generally elected by the Company's board of directors at its meeting on the day of each annual election of directors, 
with each such officer serving until a successor has been elected and qualified.

45

PIONEER NATURAL RESOURCES COMPANY

PART II

ITEM 5.

MARKET FOR REGISTRANT'S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND
ISSUER PURCHASES OF EQUITY SECURITIES

The Company's common stock is listed and traded on the NYSE under the symbol "PXD." The Company's board of directors 
(the "Board") declared dividends to the holders of the Company's common stock of $0.04 per share during each of the first and 
third quarters of the years ended December 31, 2016 and 2015. The Board intends to consider the payment of dividends to the 
holders of the Company's common stock in the future. The declaration and payment of future dividends, however, will be at the 
discretion of the Board and will depend on, among other things, the Company's earnings, financial condition, capital requirements, 
level of indebtedness, statutory and contractual restrictions applying to the payment of dividends and other considerations that the 
Board deems relevant.

The following table sets forth quarterly high and low prices of the Company's common stock and dividends declared per 

share for the years ended December 31, 2016 and 2015:

Year ended December 31, 2016

Fourth quarter
Third quarter
Second quarter
First quarter

Year ended December 31, 2015

Fourth quarter
Third quarter
Second quarter
First quarter

High

Low

Dividends
Declared
Per Share

$
$
$
$

$
$
$
$

195.00
190.94
171.88
145.87

150.00
140.08
181.97
167.30

$
$
$
$

$
$
$
$

166.50
147.21
136.97
103.50

114.40
105.83
136.18
133.95

$
$
$
$

$
$
$
$

—
0.04
—
0.04

—
0.04
—
0.04

On February 14, 2017, the last reported sales price of the Company's common stock, as reported in the NYSE composite 

transactions, was $198.90 per share.

As of February 14, 2017, the Company's common stock was held by 11,321 holders of record.

Purchases of Equity Securities by the Issuer and Affiliated Purchasers

The following table summarizes the Company's purchases of its common stock during the three months ended December 

31, 2016.

Period
October 2016
November 2016
December 2016
Total

Total Number of
Shares Purchased (a)
1,643
57
754
2,454

$
$
$
$

Average Price
Paid per Share

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

Approximate Dollar
Amount of Shares
that May Yet Be
Purchased under
Plans or Programs

190.97
179.02
189.57
190.26

—
—
—
— $

—
—
—
—

____________________
(a) 

Consists of shares purchased from employees in order for employees to satisfy tax withholding payments related to share-
based awards that vested during the period. 

46

 
PIONEER NATURAL RESOURCES COMPANY

ITEM 6.

SELECTED FINANCIAL DATA

The following selected consolidated financial data of the Company as of and for each of the five years ended December 
31, 2016 should be read in conjunction with "Item 7. Management's Discussion and Analysis of Financial Condition and Results 
of Operations" and "Item 8. Financial Statements and Supplementary Data."

Statements of Operations Data:

Oil and gas revenues

Total revenues and other income (a)

Total costs and expenses (a)(b)

Income (loss) from continuing operations

Loss from discontinued operations, net of tax (c)

Net income (loss) attributable to common stockholders
Income (loss) from continuing operations attributable to
common stockholders per share:

Basic

Diluted

Net income (loss) attributable to common stockholders
per share:

Basic

Diluted

Dividends declared per share

Balance Sheet Data (as of December 31):

Total assets

Long-term obligations

Total equity

Year Ended December 31,

2016

2015

2014

2013

2012

(in millions, except per share data)

$

$

$

$

$

$

$

$

$

$

$

$

$

$

2,418

3,824

$

$

$
4,783
(556) $
— $
(556) $

2,178

4,825

$

$

$
5,246
(266) $
(7) $
(273) $

3,599

5,072

3,475

$

$

$

1,041
$
(111) $
$
930

(3.34) $
(3.34) $

(1.79) $
(1.79) $

(3.34) $
(3.34) $
$
0.08

(1.83) $
(1.83) $
$
0.08

7.17

7.15

6.40

6.38

0.08

16,459

4,482

10,411

$

$

$

15,154

5,317

8,375

$

$

$

14,909

4,901

8,589

$

$

$

$

$

$

$

$

3,088

3,658

$

$

$
4,232
(361) $
(438) $
(838) $

(2.94) $
(2.94) $

(6.16) $
(6.16) $
$
0.08

2,512

3,021

2,189

544
(301)
192

3.99

3.88

1.54

1.50

0.08

12,272

4,426

6,615

$

$

$

13,041

6,225

5,867

 ______________________
(a) 

The Company recognized revenues from the sale of purchased oil and gas of $1.5 billion, $964 million and $726 million
for the years ended December 31, 2016, 2015 and 2014, respectively. The Company also recognized expenses related to 
purchased oil and gas of $1.6 billion, $1.0 billion and $703 million for the years ended December 31, 2016, 2015 and 2014, 
respectively. The Company enters into purchase transactions with third parties and separate sale transactions with third 
parties to satisfy unused pipeline capacity commitments and to diversify a portion of the Company's WTI oil sales to a Gulf 
Coast market price. See Note B of Notes to Consolidated Financial Statements included in "Item 8. Financial Statements 
and Supplementary Data" for more information about the Company's revenues and expenses from these transactions.
(b)  During 2016, 2015 and 2013, the Company recognized impairment charges of $32 million related to oil and gas properties 
in the West Panhandle, $1.1 billion related to oil and gas properties in the West Panhandle, South Texas - Other and South 
Texas - Eagle Ford Shale fields and $1.5 billion related to dry gas properties in the Raton field, respectively. See "Item 7. 
Management's  Discussion  and Analysis  of  Financial  Condition  and  Results  of  Operations"  and  Note  D  of  Notes  to 
Consolidated Financial Statements included in "Item 8. Financial Statements and Supplementary Data" for more information 
about the Company's impairment charges. 
The Company recognized impairment charges of (i) $305 million attributable to its Hugoton assets, its Barnett Shale assets 
and Pioneer Alaska in 2014, (ii) $729 million attributable to its Barnett Shale assets and Pioneer Alaska in 2013 and (iii) 
$533 million attributable to its Barnett Shale assets in 2012. The results of these operations are classified as discontinued 
operations in accordance with GAAP. See Notes C and D of Notes to Consolidated Financial Statements included in "Item 
8. Financial Statements and Supplementary Data" for more information about the Company's discontinued operations and 
related impairment charges.

(c) 

47

 
 
 
 
 
PIONEER NATURAL RESOURCES COMPANY

ITEM 7.

MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF
OPERATIONS

Financial and Operating Performance

Pioneer's financial and operating performance for 2016 included the following highlights:

• 

Net loss attributable to common stockholders was $556 million ($3.34 per diluted share) for the year ended December 31, 
2016, as compared to a net loss of $273 million ($1.83 per diluted share) in 2015. The $283 million decrease in earnings 
attributable to common stockholders is primarily comprised of a $290 million increase in loss from continuing operations, 
partially offset by a $7 million decrease in loss from discontinued operations, net of tax.  

The primary components of the decrease in earnings from continuing operations include:

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

a  $1.0  billion  decrease  in  net  derivative  results,  primarily  as  a  result  of  changes  in  the  Company's  portfolio  of 
derivatives and increases in commodity prices;

a $780 million decrease in net gains on disposition of assets as a result of recognizing a $777 million gain in 2015 
associated with the sale of EFS Midstream;

a $95 million increase in DD&A expense, primarily attributable to a 15 percent increase in sales volumes; 

a $25 million decrease in earnings associated with purchases and sales of oil and gas used to fulfill transportation 
commitments;

a $20 million increase in exploration and abandonment charges, primarily due to writing off the Company's unproved 
acreage in Alaska during 2016 as it is no longer expected to be developed; and 

a $20 million increase in interest expense, primarily due to incremental interest expense associated with the 3.45% 
Senior Notes and 4.45% Senior Notes issued by the Company in December 2015; partially offset by

a $1.0 billion decrease in impairment charges, principally related to the impairments recorded in 2015 to reduce the 
carrying value of the Company's South Texas - Eagle Ford Shale, West Panhandle and South Texas - Other fields;

a $248 million increase in the Company's income tax benefit, primarily as a result of the reduction in earnings from 
continuing operations and tax credits recognized in 2016 associated with research and experimental expenditures 
related to horizontal drilling and completion innovations;

a $240 million increase in oil and gas revenues as a result a 15 percent increase in sales volumes, partially offset by 
a decrease in oil and gas prices;

a $145 million decrease in total oil and gas production costs and production and ad valorem taxes, primarily due to 
the Company's cost reduction initiatives and the decline in commodity prices; and

a $27 million decrease in other expense, primarily related to reductions in inventory and other property and equipment 
impairment charges, idle drilling and well service equipment charges and restructuring charges.

• 

• 

• 

• 

Daily sales volumes from continuing operations increased on a BOE basis by 15 percent to 233,842 BOEPD during 2016, 
as compared to 204,050 BOEPD during 2015, primarily due to the success of the Company's Spraberry/Wolfcamp horizontal 
drilling program.

Average  oil  and  gas  prices  from  continuing  operations  decreased  during  2016  to  $39.65  per  Bbl  and  $2.11  per  Mcf, 
respectively, as compared to respective average prices of $43.55 per Bbl and $2.40 per Mcf during 2015. Average NGL 
prices increased during 2016 to $13.49 per Bbl as compared to $13.31 per Bbl in 2015.
Net cash provided by operating activities increased by 20 percent to $1.5 billion for 2016, as compared to $1.2 billion during 
2015, primarily due to increases in the Company's oil and gas revenues in 2016 as a result of increased sales volumes 
(partially offset by the aforementioned decreases in oil and gas prices), reductions in operating costs and a decrease in funds 
used to satisfy working capital obligations.

As of December 31, 2016, the Company's net debt to book capitalization decreased to two percent, as compared to 21 
percent as of December 31, 2015, primarily due to the Company's issuances of 19.8 million shares of common stock during 
2016 for cash proceeds of $2.5 billion.

First Quarter 2017 Outlook

Based  on  current  estimates,  the  Company  expects  the  following  operating  and  financial  results  for  the  quarter  ending 

March 31, 2017:

Production is forecasted to average 243,000 to 248,000 BOEPD. 

48

 
PIONEER NATURAL RESOURCES COMPANY

Production costs (including production and ad valorem taxes and transportation costs) are expected to average $7.75 to 
$9.75 per BOE, based on current NYMEX strip commodity prices. DD&A expense is expected to average $15.50 to $17.50 per 
BOE.

Total exploration and abandonment expense is expected to be $20 million to $30 million. General and administrative expense 
is expected to be $80 million to $85 million. Interest expense is expected to be $45 million to $50 million, and other expense is 
expected to be $60 million to $70 million. Other expense is expected to include (i) $35 million to $40 million of charges associated 
with excess firm gathering and transportation commitments, (ii) $10 million to $15 million of losses (principally noncash) associated 
with the portion of vertical integration services provided to nonaffiliated working interest owners, including joint venture partners, 
in wells operated by the Company and (iii) other miscellaneous charges. Accretion of discount on asset retirement obligations is 
expected to be $4 million to $7 million.

The Company's effective income tax rate is expected to range from 35 percent to 40 percent, assuming current capital 
spending plans and no significant derivative MTM changes in the Company's derivative position. Cash income taxes are expected 
to be less than $5 million.

2017 Capital Budget

Pioneer's capital budget for 2017 totals $2.8 billion, consisting of $2.5 billion for drilling and completion related activities, 
including  additional  tank  batteries,  saltwater  disposal  facilities  and  gas  processing  facilities,  and  $275  million  for  water 
infrastructure,  vertical  integration,  and  field  facilities.  The  2017  budget  excludes  acquisitions,  asset  retirement  obligations, 
capitalized interest, geological and geophysical general and administrative expense and information technology system upgrades. 

The 2017 drilling capital of $2.5 billion continues to be focused on oil- and liquids-rich drilling, with over 95 percent of 
the capital allocated to horizontal drilling activities in the Spraberry/Wolfcamp field. The following is the forecasted spending by 
asset area:

• 

Spraberry/Wolfcamp field - $2.4 billion, including (i) $1.9 billion of horizontal drilling capital, (ii) $265 million for 
infrastructure (additional tank batteries and salt water disposal facilities), (iii) $115 million for gas processing facilities 
and (iv) $110 million of land, science and other expenditures;

•  Eagle Ford Shale - $95 million, including $65 million of horizontal drilling capital and $30 million of compression 

additions, land and other expenditures; and

•  Other assets - $20 million. 

The 2017 capital budget is expected to be funded from a combination of operating cash flow, cash and cash equivalents on 

hand, sales of short-term and long-term investments and, if necessary, borrowings under the Company's credit facility.

Acquisitions

During 2016, 2015 and 2014, the Company spent $446 million, $36 million and $104 million, respectively, to acquire 
primarily undeveloped acreage for future exploitation and exploration activities in the Spraberry/Wolfcamp field of the Permian 
Basin. During 2016, the Company completed the acquisition of approximately 28,000 net acres in the Permian Basin, with net 
production of approximately 1,400 BOEPD from an unaffiliated third party for $428 million, including normal closing adjustments. 
During 2014, the Company acquired the remaining limited partner interests in five affiliated oil and gas drilling partnerships for 
$54 million and caused the partnerships to be merged with and into a wholly-owned subsidiary of the Company. See Note C of 
Notes to Consolidated Financial Statements included in "Item 8. Financial Statements and Supplementary Data" for additional 
information about the Company's acquisitions.

Divestitures and Discontinued Operations

EFS Midstream. In July 2015, the Company completed the sale of its 50.1 percent equity interest in EFS Midstream to an 
unaffiliated third party, with the Company receiving total consideration of $1.0 billion, of which $530 million was received at 
closing and the remaining $501 million was received in July 2016. The Company recorded a net gain on the disposition of $777 
million in September 2015. 

Hugoton, Barnett Shale and Alaska. In 2014, the Company completed the sale of (i) its net assets in the Hugoton field in 
southwest Kansas for cash proceeds of $328 million, (ii) its net assets in the Barnett Shale field in North Texas for cash proceeds 
of $150 million and (iii) 100 percent of the capital stock in Pioneer Alaska for cash proceeds of $267 million. The Company has 
reflected  the  results  of  operations  of  its  Hugoton  assets,  its  Barnett  Shale  assets  and  Pioneer Alaska  (prior  to  their  sale)  as 
discontinued operations in the accompanying consolidated statements of operations.

49

PIONEER NATURAL RESOURCES COMPANY

Sendero. In March 2014, the Company completed the sale of its majority interest in Sendero to Sendero's minority interest 
owner for cash proceeds of $31 million. As part of the sales agreement, the Company committed to lease from Sendero 12 vertical 
rigs through December 31, 2015 and eight vertical rigs in 2016.

See  Notes  C  and  D  of  Notes  to  Consolidated  Financial  Statements  included  in  "Item  8.  Financial  Statements  and 

Supplementary Data" for additional information about the Company's divestitures and discontinued operations.

Results of Operations

Oil and gas revenues. Oil and gas revenues from continuing operations totaled $2.4 billion, $2.2 billion and $3.6 billion

during 2016, 2015 and 2014, respectively.

The increase in 2016 oil and gas revenues relative to 2015 is primarily due increases of 27 percent and 13 percent in oil 
and NGL sales volumes, respectively, partially offset by a six percent decline in gas sales volumes and declines of nine percent
and 12 percent in oil and gas prices, respectively.

The decrease in 2015 oil and gas revenues relative to 2014 is primarily due to declines of 49 percent, 51 percent and 41 
percent in oil, NGL and gas prices, respectively, partially offset by 21 percent and six percent increases in oil and gas sales volumes, 
respectively.

The following table provides average daily sales volumes from continuing operations for 2016, 2015 and 2014:

Oil (Bbls)
NGLs (Bbls)
Gas (Mcf)
Total (BOE)

Year Ended December 31,

2016
133,677
43,504
339,966
233,842

2015
105,347
38,592
360,662
204,050

2014

87,034
38,646
339,341
182,237

Average  daily  sales  volumes  from  continuing  operations  in  2016  and  2015  increased  by  15  percent  and  12  percent, 
respectively,  as  compared  to  the  average  daily  sales  volumes  in  the  respective  prior  years,  principally  due  to  the  Company's 
successful Spraberry/Wolfcamp horizontal drilling program. 

Production for the years ended December 31, 2016 and 2015 reflects lower NGL production volumes of approximately 
4,700 barrels per day and 5,300 barrels per day, respectively, due to voluntary reductions in recoveries of ethane since it had a 
higher value if sold as part of the gas stream. 

The following table provides average daily sales volumes from discontinued operations during 2014:

Oil (Bbls)
NGLs (Bbls)
Gas (Mcf)
Total (BOE)

Year Ended
December 31,

2014

2,605
4,535
37,881
13,453

50

 
 
 
 
 
 
PIONEER NATURAL RESOURCES COMPANY

The oil, NGL and gas prices that the Company reports are based on the market prices received for the commodities. The 

following table provides the Company's average prices from continuing operations for 2016, 2015 and 2014:

Oil (per Bbl)
NGLs (per Bbl)
Gas (per Mcf)
Total (per BOE)

Year Ended December 31,

2016

2015

2014

$
$
$
$

39.65
13.49
2.11
28.25

$
$
$
$

43.55
13.31
2.40
29.25

$
$
$
$

85.29
27.06
4.10
54.11

Sales of purchased oil and gas. The Company periodically enters into pipeline capacity commitments in order to secure 
available oil, NGL and gas transportation capacity from the Company's areas of production. The Company enters into purchase 
transactions with third parties and separate sale transactions with third parties to diversify a portion of the Company's WTI oil 
sales to a Gulf Coast market price and to satisfy unused pipeline capacity commitments. Revenues and expenses from these 
transactions are presented on a gross basis as the Company acts as a principal in the transaction by assuming the risk and rewards 
of ownership, including credit risk, of the commodities purchased and assuming the responsibility to deliver the commodities 
sold. The net effect of third party purchases and sales of oil and gas for the year ended December 31, 2016 was a loss of $64 
million, as compared to a loss of $39 million and earnings of $23 million for the years ended December 31, 2015 and 2014, 
respectively.  Firm  transportation  payments  on  excess  pipeline  capacity  are  included  in  other  expense  in  the  accompanying 
consolidated statements of operations. See Note N of Notes to Consolidated Financial Statements included in "Item 8. Financial 
Statements and Supplementary Data" for further information on unused transportation commitment charges. 

Interest and other income. The Company's interest and other income from continuing operations was $32 million for the 
year ended December 31, 2016, as compared to $22 million and $26 million for the years ended December 31, 2015 and 2014, 
respectively.  See  Note  M  of  Notes  to  Consolidated  Financial  Statements  included  in  "Item  8.  Financial  Statements  and 
Supplementary Data" for more information about the Company's interest and other income.

Derivative gains (losses), net. The Company utilizes commodity swap contracts, collar contracts and collar contracts with 
short puts to (i) reduce the effect of price volatility on the commodities the Company produces and sells or consumes, (ii) support 
the Company's annual capital budgeting and expenditure plans and (iii) reduce commodity price risk associated with certain capital 
projects. During the year ended December 31, 2016, the Company recorded $161 million of net derivative losses, compared to 
$879 million and $712 million of net derivative gains for the years ended December 31, 2015 and 2014, respectively, on commodity 
price and interest rate derivatives. For the years ended December 31, 2016, 2015 and 2014, the Company received net cash receipts 
of $690 million, $876 million and $103 million, respectively, from its derivative activities. 

The following table details the net cash receipts (payments) on the Company's commodity derivatives and the relative price 

impact (per Bbl or Mcf) for the years ended December 31, 2016, 2015 and 2014:

2016

2015

2014

Year Ended December 31,

Net cash
receipts

(in
millions)
609
$

Price impact

$ 12.42 per Bbl

Net cash
receipts

(in
millions)
744
$

Price impact

$ 19.36 per Bbl

Net cash
receipts

(in
millions)
104
$

Price impact

$ 3.34 per Bbl

5

$ 0.30 per Bbl

18

$ 0.79 per Bbl

8

$ 0.56 per Bbl

Oil derivative receipts

NGL derivative receipts

Gas derivative receipts (payments)

67

$ 0.54 per Mcf

Total net commodity derivative receipts

$

681

114

876

$

$ 0.87 per Mcf

(27) $ (0.22) per Mcf

$

85

The Company's open derivative contracts are subject to continuing market risk. See "Item 7A. Quantitative and Qualitative 
Disclosures About Market Risk" and Note E of Notes to Consolidated Financial Statements included in "Item 8. Financial Statements 
and Supplementary Data" for more information about the Company's derivative contracts.

Gain on disposition of assets, net. The Company recorded net gains on the disposition of assets of $2 million, $782 million
and $9 million during the years ended December 31, 2016, 2015 and 2014, respectively. For the year ended December 31, 2015, 
the Company's gains on disposition of assets are primarily due to the gain of $777 million recognized on the sale of EFS Midstream. 

51

 
 
 
PIONEER NATURAL RESOURCES COMPANY

Oil and gas production costs. The Company's oil and gas production costs from continuing operations totaled $581 million, 
$717 million and $693 million for the years ended December 31, 2016, 2015 and 2014, respectively. Lease operating expenses 
and workover expenses represent the components of oil and gas production costs over which the Company has management 
control, while third-party transportation charges represent the cost to transport volumes produced to a sales point. Net natural gas 
plant/gathering charges represent the net costs to gather and process the Company's gas, reduced by net revenues earned from 
gathering and processing of third party gas in Company-owned facilities.

Total oil and gas production costs per BOE for the year ended December 31, 2016 decreased 29 percent as compared to 
2015. The decrease in lease operating expenses per BOE is primarily due to a greater proportion of the Company's production 
coming from horizontal wells in the Spraberry/Wolfcamp area that have lower per BOE lease operating costs, cost reduction 
initiatives and lower electricity and fuel costs, which are impacted by lower commodity prices. The decline in workover costs per 
BOE during 2016 as compared to 2015 was primarily due to reduced workover activity on older vertical wells, as such activity 
was generally uneconomical as a result of the lower commodity price environment. 

Total oil and gas production costs per BOE for the year ended December 31, 2015 decreased eight percent as compared to 
2014. The decrease in lease operating expenses per BOE is also primarily due to a greater proportion of the Company's production 
coming from horizontal wells in the Spraberry/Wolfcamp area that have lower per BOE lease operating costs, cost reduction 
initiatives  and  lower  electricity  and  fuel  costs,  which  are  impacted  by  lower  commodity  prices.  The  increase  in  third-party 
transportation charges reflects the impact of the Company's sale of its interest in EFS Midstream in July 2015 whereby the Company 
is no longer able to reduce its transportation costs by its proportionate share of the cash flow generated by EFS Midstream. The 
increase in net natural gas plant charges per BOE during 2015, as compared to 2014, is primarily reflective of reduced earnings 
on third-party volumes that are processed in Company-owned facilities due to lower NGL and gas prices. 

The following table provides the components of the Company's total production costs per BOE for 2016, 2015 and 2014:

Lease operating expenses
Third-party transportation charges
Net natural gas plant/gathering charges
Workover costs
Total production costs

Year Ended December 31,

2016

2015

2014

$

$

5.02
1.41
0.01
0.35
6.79

$

$

7.24
1.60
0.16
0.62
9.62

$

$

8.66
1.29
(0.20)
0.65
10.40

Production and ad valorem taxes. The Company recorded production and ad valorem taxes from continuing operations of 
$136 million during 2016, as compared to $145 million and $220 million for 2015 and 2014, respectively. In general, production 
taxes and ad valorem taxes are directly related to commodity price changes; however, Texas ad valorem taxes are based upon prior 
year commodity prices, whereas production taxes are based upon current year commodity prices. 

The following table provides the Company's production and ad valorem taxes per BOE from continuing operations for 

2016, 2015 and 2014:

Production taxes
Ad valorem taxes
Total ad valorem and production taxes

Year Ended December 31,

2016

2015

2014

$

$

1.14
0.46
1.60

$

$

1.19
0.76
1.95

$

$

2.18
1.13
3.31

 Depletion, depreciation and amortization expense. The Company's total DD&A expense from continuing operations was 
$1.5 billion ($17.29 per BOE), $1.4 billion ($18.59 per BOE), and $1.0 billion ($15.75 per BOE) for 2016, 2015 and 2014, 
respectively. Depletion expense on oil and gas properties, the largest component of DD&A expense, was $16.77, $18.01 and 
$15.19 per BOE during 2016, 2015 and 2014, respectively.

During 2016, the seven percent decrease in per BOE depletion expense, as compared to 2015, is primarily due to (i) reserve 
additions attributable to the Company's successful drilling activities and (ii) cost reduction initiatives that lowered expected lease 
operating expense, which had the effect of adding reserves by lengthening the economic life of the Company's producing wells.

During 2015, the 19 percent increase in per BOE depletion expense, as compared to that of 2014 was primarily due to (i) 
declines in commodity prices during the fourth quarter of 2014 and further price declines in 2015, which led to reductions in 

52

 
 
 
 
 
 
PIONEER NATURAL RESOURCES COMPANY

proved reserves as a result of shortening the economic productive lives of the Company's producing wells and, to a lesser extent, 
(ii) a decline in proved undeveloped reserves during the fourth quarter of 2014 to remove 39 MMBOE of proved undeveloped 
vertical well locations that were no longer expected to be drilled as a result of the Company shifting its planned capital expenditures 
to higher-rate-of-return horizontal drilling. 

An  extended  commodity  price  decline  could  adversely  affect  the  amount  of  oil,  NGLs  and  gas  that  the  Company  can 
economically produce, which could result in the Company having to make downward adjustments to its estimated proved reserves. 
Reductions in estimated proved reserves could increase the amount of depletion expense the Company recognizes as a result of 
shortening the economic productive lives of the Company's producing wells.

Impairment of oil and gas properties and other long-lived assets. The Company recorded impairment expense in continuing 
operations to reduce the carrying values of oil and gas properties by $32 million and $1.1 billion during the years ended December 
31, 2016 and 2015. For the year ended December 31, 2014, the Company did not have any impairment expense in continuing 
operations.

The Company performs assessments of its long-lived assets to be held and used, including oil and gas properties, whenever 
events  or  circumstances  indicate  that  the  carrying  values  of  those  assets  may  not  be  recoverable.  In  order  to  perform  these 
assessments,  management  uses  various  observable  and  unobservable  inputs,  including  management's  outlooks  for  (i)  proved 
reserves and risk-adjusted probable and possible reserves, (ii) commodity prices, (iii) production costs, (iv) capital expenditures 
and (v) production.

Management's long-term commodity price outlooks are developed based on third-party longer-term commodity futures 
price outlooks as of a measurement date ("Management's Price Outlooks"). At December 31, 2016, Management's Price Outlook 
for oil and gas prices were nine percent higher and four percent lower, respectively, than the comparable prices at December 31, 
2015. At  December  31,  2015,  Management's  Price  Outlook  for  oil  and  gas  prices  were  lower  by  23  percent  and  20  percent, 
respectively, than the comparable prices at December 31, 2014. The trend of Management's Price Outlooks by year is as follows:

Management's oil outlook (Bbl)

Management's gas outlook (MMBtu)

December 31, 2016
$57.32

December 31, 2015
$52.82

December 31, 2014
$68.64

$3.21

$3.34

$4.16

As a result of the Company's impairment assessments, including reductions in Management's Price Outlooks, the Company 
recognized pretax, noncash impairment charges to reduce the carrying values of (i) the West Panhandle field during the year ended 
December 31, 2016 ($32 million) and (ii) the Eagle Ford Shale field ($846 million), the West Panhandle field ($138 million) and 
the South Texas - Other field ($72 million) during the year ended December 31, 2015.

It is reasonably possible that the Company's estimate of undiscounted future net cash flows may change in the future resulting 
in the need to impair the carrying values of its properties. The primary factors that may affect estimates of future cash flows are 
(i) future reserve adjustments, both positive and negative, to proved reserves and risk-adjusted probable and possible reserves 
(ii) results of future drilling activities, (iii) changes in Management's Price Outlooks and (iv) increases or decreases in production 
and capital costs associated with these fields.

See  Notes  B  and  D  of  Notes  to  Consolidated  Financial  Statements  included  in  "Item  8.  Financial  Statements  and 

Supplementary Data" for additional information about the Company's impairment assessments.

Exploration and abandonments expense. The following table provides the Company's geological and geophysical costs, 
exploratory dry holes expense and leasehold abandonments and other exploration expense from continuing operations for 2016, 
2015 and 2014 (in millions):

Geological and geophysical
Exploratory well costs
Leasehold abandonments and other

Year Ended December 31,

2016

2015

2014

$

$

77
1
41
119

$

$

71
17
11
99

$

$

86
27
64
177

During 2016, the Company's exploration and abandonment expense was primarily attributable to $77 million of geological 
and geophysical costs, of which $70 million was geological and geophysical administrative costs and $41 million of leasehold 
53

 
 
 
PIONEER NATURAL RESOURCES COMPANY

abandonment expense, which included $32 million associated with unproved acreage in Alaska in which the Company held an 
overriding royalty interest. During 2016, the Company completed and evaluated 215 exploration/extension wells, all of which 
were successfully completed as discoveries.

During 2015, the Company's exploration and abandonment expense was primarily attributable to $71 million of geological 
and geophysical costs, of which $60 million was geological and geophysical administrative costs; $17 million of dry hole provisions, 
primarily related to drilling activities attributable to the Company's unproved acreage position in southeast Colorado; and $11 
million of leasehold abandonment expense, which includes $7 million associated with the Company's unproved acreage position 
in southeast Colorado. During 2015, the Company completed and evaluated 220 exploration/extension wells, 218 of which were 
successfully completed as discoveries.

During 2014, the Company's exploration and abandonment expense was primarily attributable to $86 million of geological 
and geophysical costs, of which $59 million was geological and geophysical administrative costs; $27 million of dry hole provisions, 
primarily related to drilling activities attributable to the Company's unproved acreage position in southeast Colorado; and $64 
million of leasehold abandonment expense, which included $50 million associated with the Company's unproved acreage position 
in southeast Colorado. During 2014, the Company completed and evaluated 335 exploration/extension wells, 330 of which were 
successfully completed as discoveries.

General and administrative expense. General and administrative expense from continuing operations totaled $325 million
($3.80 per BOE), $327 million ($4.39 per BOE) and $333 million ($5.01 per BOE) during 2016, 2015 and 2014, respectively. 
The decrease in year-over-year general and administrative expense and per BOE expense for both 2016 and 2015 were primarily 
due to the Company's cost reduction initiatives, including not replacing personnel who have left the Company and reduced contractor 
activity, while continuing to increase production volumes.

Accretion of discount on asset retirement obligations. Accretion of discount on asset retirement obligations from continuing 
operations was $18 million, $12 million and $12 million during the years ended December 31, 2016, 2015 and 2014, respectively. 
See Note I of Notes to Consolidated Financial Statements included in "Item 8. Financial Statements and Supplementary Data" for 
additional information regarding the Company's asset retirement obligations.

Interest  expense.  Interest  expense  was  $207  million,  $187  million  and  $184  million  during  2016,  2015  and  2014, 
respectively. The increase in interest expense during the year ended December 30, 2016, as compared 2015, was primarily due to 
incremental interest expense associated with the Company's December 2015 issuance of $500 million of 3.45% Senior Notes due 
2021 and $500 million of 4.45% Senior Notes due 2026. The weighted average interest rate on the Company's indebtedness for 
the year ended December 31, 2016 was 6.0 percent, as compared to 6.9 percent and 6.9 percent for the years ended December 31, 
2015 and 2014, respectively.

See Note G of Notes to Consolidated Financial Statements included in "Item 8. Financial Statements and Supplementary 

Data" for additional information about the Company's long-term debt and interest expense.

Other expenses. Other expenses from continuing operations were $288 million during 2016, as compared to $315 million
during 2015 and $106 million during 2014. The $27 million decrease in other expense during 2016, as compared to 2015, was 
primarily due to decreases of (i) $78 million in inventory and other property and equipment impairment charges, (ii) $28 million 
in idle drilling and well service equipment charges and (iii) $19 million in restructuring charges (see further information below), 
partially offset by increases of (iv) $56 million in unused firm transportation costs and (v) $20 million in net losses from Company-
provided fracture stimulation and related service operations that are provided to third party working interest owners.

The $209 million increase in other expense during 2015, as compared to 2014, was primarily due to (i) an $85 million 
increase in idle drilling and well service equipment charges, (ii) a $78 million increase in inventory and other property and equipment 
impairment charges, principally related to excess vertical pipe inventory, (iii) $23 million in restructuring charges (see further 
information below), (iv) an $18 million increase in the net loss from Company-provided fracture stimulation and related service 
operations provided to third-party working interest owners and (v) a $7 million increase in unused firm transportation costs.   

In February 2016, the Company announced plans to restructure its pressure pumping operations in South Texas, including 
relocating its two Eagle Ford Shale pressure pumping fleets to the Spraberry/Wolfcamp area. In connection therewith, the Company 
offered severance to certain employees and relocated a number of other employees from its South Texas locations to its operations 
in the Permian Basin. The initiative was substantially complete as of December 31, 2016. In connection therewith, during the year 
ended December 31, 2016, the Company recognized $4 million of restructuring charges in other expense in the accompanying 
consolidated statements of operations. The restructuring costs included $3 million in cash employee severance costs and $1 million
in employee relocation and other costs.

54

PIONEER NATURAL RESOURCES COMPANY

In May 2015, the Company announced plans to restructure its operations in Colorado, including closing its office in Denver, 
Colorado  and  eliminating  its  Trinidad-based  pressure  pumping  services  operations.  The  restructuring  plan  was  substantially 
complete as of December 31, 2015. In connection therewith, during the year ended December 31, 2015, the Company recognized 
$23 million of restructuring charges in other expense in the accompanying consolidated statements of operations, which includes 
approximately $17 million in employee severance costs and $6 million in office lease-related costs.

The Company expects to continue to incur charges associated with excess firm gathering and transportation commitments 
and vertical integration operations until commodity prices improve, allowing the Company to increase its drilling activities, or, 
in the case of gathering and transportation commitments, the contractual obligations expire. Based on current drilling plans for 
2017, the Company does not expect to incur any idle drilling rig charges.

See  Notes  B,  J  and  N  of  Notes  to  Consolidated  Financial  Statements  included  in  "Item  8.  Financial  Statements  and 

Supplementary Data" for additional information regarding the Company's other expenses.

Income tax benefit (provision). The Company recognized an income tax benefit attributable to earnings from continuing 
operations of $403 million during 2016, as compared to an income tax benefit of $155 million during 2015 and an income tax 
provision of $556 million during 2014. The Company's effective tax rates on earnings from continuing operations, excluding 
income from noncontrolling interest, for 2016, 2015 and 2014 were 42 percent, 37 percent and 35 percent, respectively, as compared 
to the combined United States federal and state statutory rates of approximately 36 percent. The Company's effective tax rate for 
2016 differs from the combined statutory rate primarily due to recognizing research and experimental expenditures credits of $72 
million during 2016, and, to a lesser extent, state income tax apportionments and nondeductible expenses.

As  of  December  31,  2016,  the  Company  had  unrecognized  tax  benefits  of  $112  million  resulting  from  research  and 
experimental expenditures related to horizontal drilling and completion innovations. If all or a portion of the unrecognized tax 
benefit is sustained upon examination by the taxing authorities, the tax benefit will be recognized as a reduction to the Company's 
deferred tax liability and will affect the Company's effective tax rate in the period it is recognized. The Company expects to resolve 
the uncertainties associated with the unrecognized tax benefit by December 2017. 

See Note O of Notes to Consolidated Financial Statements included in "Item 8. Financial Statements and Supplementary 

Data" for additional information regarding the Company's income tax rates and tax attributes.

Loss from discontinued operations, net of tax. The Company did not have any discontinued operations activity for the 
year ended December 31, 2016. The Company recognized losses from discontinued operations, net of tax, of $7 million and $111 
million in 2015 and 2014, respectively, from the operations of Hugoton, Barnett Shale and Pioneer Alaska prior to their sales.

See Note C and Note D of Notes to Consolidated Financial Statements included in "Item 8. Financial Statements and 
Supplementary Data" for additional information regarding the Company's discontinued operations and related impairment charges.

Capital Commitments, Capital Resources and Liquidity

Capital commitments. The Company's primary needs for cash are for capital expenditures and acquisition expenditures on 
oil and gas properties and related vertical integration assets and facilities, payments of contractual obligations, including debt 
maturities, dividends and working capital obligations. Funding for these cash needs may be provided by any combination of 
internally-generated cash flow, cash and cash equivalents on hand, sales of short-term and long-term investments, proceeds from 
divestitures or external financing sources as discussed in "Capital resources" below. During 2017, the Company expects that it 
will be able to fund its needs for cash (excluding acquisitions, if any) with a combination of internally generated cash flows, cash 
and cash equivalents on hand, sales of short-term and long-term investments and, if necessary, availability under the Company's 
credit facility or proceeds from divestitures of nonstrategic assets. Although the Company expects that these sources of funding 
will be adequate to fund capital expenditures, dividend payments and provide adequate liquidity to fund other needs, no assurances 
can be given that such funding sources will be adequate to meet the Company's future needs.

During 2017, the Company plans to continue to focus its capital spending primarily on liquids-rich drilling activities in the 
Spraberry/Wolfcamp  area.  The  Company's  2017  capital  budget  totals  $2.8  billion  (excluding  acquisitions,  asset  retirement 
obligations, capitalized interest, geological and geophysical administrative costs and information technology systems upgrades), 
consisting of $2.5 billion for drilling operations and $275 million for water infrastructure, vertical integration and field facilities. 
Based on the Company's current Management Price Outlooks, Pioneer expects its net cash flows from operating activities, cash 
and cash equivalents on hand, sales of short-term and long-term investments and, if necessary, availability under the Company's 
credit facility or proceeds from divestitures of nonstrategic assets to be sufficient to fund its planned capital expenditures and 
contractual obligations, including debt maturities.

55

PIONEER NATURAL RESOURCES COMPANY

Investing activities. Net cash used in investing activities during 2016 was $3.8 billion, as compared to net cash used in 
investing activities of $1.8 billion and $2.7 billion during 2015 and 2014, respectively. The increase in net cash flow used in 
investing activities during 2016, as compared to 2015, is primarily due to (i) net purchases of $1.8 billion of investments (commercial 
paper, corporate bonds and time deposits), (ii) the purchase of 28,000 net acres in the Permian Basin, with net production of 
approximately 1,400 BOEPD, from an unaffiliated third party for $428 million and (iii) a $46 million decrease in proceeds from 
the disposition of assets, partially offset by (iv) a $253 million decrease in additions to oil and gas properties and (v) an $80 million
decrease in additions to other assets and other property and equipment. Proceeds from the disposition of assets during 2016 and 
2015 included $501 million and $530 million, respectively, associated with the sale of EFS Midstream. The Company's investing 
activities during the year ended December 31, 2016 were primarily funded by net cash provided by operating activities, cash on 
hand and the Company's issuance of 19.8 million shares of common stock during 2016 for cash proceeds of 2.5 billion.

 The decrease in net cash flow used in investing activities during 2015, as compared to 2014, was primarily due to (i) a 
$1.1 billion decrease in additions to oil and gas properties, (ii) a $50 million decrease in additions to other assets and other property 
and equipment, partially offset by (iii) a $324 million decrease in proceeds from the disposition of assets. Proceeds from the 
disposition of assets during 2014 include $834 million associated with the divestitures of the Hugoton assets, the Barnett Shale 
assets, Pioneer Alaska, Sendero and the proved and unproved properties in Gaines and Dawson counties in the Spraberry field. 
In addition to the aforementioned proceeds from the dispositions of assets, the Company's investing activities during the year 
ended December 31, 2015 were primarily funded by net cash provided by operating activities and cash on hand. See "Results of 
Operations" above and Note C of Notes to Consolidated Financial Statements included in "Item 8. Financial Statements and 
Supplementary Data" for additional information regarding asset divestitures. 

Dividends/distributions. During each of the years ended December 31, 2016, 2015 and 2014, the Board declared semiannual 
dividends  of  $0.04  per  common  share. Associated  therewith,  the  Company  paid  $13  million,  $12  million  and  $12  million, 
respectively, of aggregate dividends. Future dividends are at the discretion of the Board, and, if declared, the Board may change 
the dividend amount based on the Company's liquidity and capital resources at that time.

Off-balance  sheet  arrangements.  From  time-to-time,  the  Company  enters  into  off-balance  sheet  arrangements  and 
transactions that can give rise to material off-balance sheet obligations of the Company. As of December 31, 2016, the material 
off-balance sheet arrangements and transactions that the Company had entered included (i) operating lease agreements, (ii) drilling 
commitments,  (iii)  firm  purchase,  transportation  and  fractionation  commitments,  (iv) open  purchase  commitments  and  (v) 
contractual obligations for which the ultimate settlement amounts are not fixed and determinable, such as derivative contracts that 
are sensitive to future changes in commodity prices or interest rates, gathering, processing (primarily treating and fractionation) 
and transportation commitments on uncertain volumes of future throughput, open delivery commitments and indemnification 
obligations following certain divestitures. Other than the off-balance sheet arrangements described above, the Company has no 
transactions,  arrangements  or  other  relationships  with  unconsolidated  entities  or  other  persons  that  are  reasonably  likely  to 
materially affect the Company's liquidity or availability of or requirements for capital resources. See "Contractual obligations" 
below and Note J of Notes to Consolidated Financial Statements included in "Item 8. Financial Statements and Supplementary 
Data" for more information regarding the Company's off-balance sheet arrangements.

Contractual  obligations.  The  Company's  contractual  obligations  include  long-term  debt,  operating  leases,  drilling 
commitments (primarily related to commitments to pay day rates for contracted drilling rigs), capital funding obligations, derivative 
obligations,  firm  transportation  and  fractionation  commitments,  minimum  annual  gathering,  processing  and  transportation 
commitments and other liabilities (including postretirement benefit obligations). Other joint owners in the properties operated by 
the Company will incur portions of the costs represented by these commitments.

56

PIONEER NATURAL RESOURCES COMPANY

The following table summarizes by period the payments due by the Company for contractual obligations estimated as of 

December 31, 2016:

Long-term debt (a)
Operating leases (b)
Drilling commitments (c)
Derivative obligations (d)
Purchase commitments (e)
Other liabilities (f)
Firm purchase, gathering, processing, transportation and

fractionation commitments (g)

Payments Due by Year

2018 and
2019

2020 and
2021

2017

Thereafter

$

485
26
107
77
141
57

$

(in millions)
450
47
92
7
10
81

$

950
22
—
—
1
77

453
1,346

$

932
1,619

$

868
1,918

$

$

$

1,350
11
—
—
—
193

694
2,248

 _____________________
(a) 

See "Item 7A. Quantitative and Qualitative Disclosures About Market Risk" for information regarding estimated future 
interest payment obligations under long-term debt obligations. The amounts included in the table above represent principal 
maturities only.
See Note J of Notes to Consolidated Financial Statements included in "Item 8. Financial Statements and Supplementary 
Data" for more information about the Company's operating leases.

(b) 

(c)  Drilling commitments represent future minimum expenditure commitments for drilling rig services and well commitments 
under contracts to which the Company was a party on December 31, 2016. See Note J of Notes to Consolidated Financial 
Statements included in "Item 8. Financial Statements and Supplementary Data" for additional information regarding the 
Company's drilling commitments.

(d)  Derivative obligations represent net liabilities determined in accordance with master netting arrangements for commodity 
derivatives  that  were  valued  as  of  December  31,  2016. The  ultimate  settlement  amounts  of  the  Company's  derivative 
obligations are unknown because they are subject to continuing market risk. See "Item 7A. Quantitative and Qualitative 
Disclosures About Market Risk" and Note E of Notes to Consolidated Financial Statements included in "Item 8. Financial 
Statements and Supplementary Data" for additional information regarding the Company's derivative obligations.

(e)  Open purchase commitments primarily represent expenditure commitments for inventory, materials and other property and 

(f) 

(g) 

equipment ordered, but not received, as of December 31, 2016.
The Company's other liabilities represent current and noncurrent other liabilities that are comprised of postretirement benefit 
obligations, litigation and environmental contingencies, asset retirement obligations and other obligations for which neither 
the ultimate settlement amounts nor their timings can be precisely determined in advance. See Notes H, I and J of Notes to 
Consolidated  Financial  Statements  included  in  "Item  8.  Financial  Statements  and  Supplementary  Data"  for  additional 
information regarding the Company's postretirement benefit obligations, asset retirement obligations and litigation and 
environmental contingencies, respectively.
Firm  purchase,  gathering,  processing,  transportation  and  fractionation  commitments  represent  take-or-pay  agreements, 
which include (i) contractual commitments to purchase sand and water for use in the Company's drilling operations and 
(ii) estimated fees on production throughput commitments and demand fees associated with volume delivery commitments. 
The Company does not expect to be able to fulfill all of its short-term and long-term delivery obligations from projected 
production of available reserves; consequently, the Company plans to purchase third party volumes to satisfy its commitments 
if it is economic to do so; otherwise, it will pay demand fees for any commitment shortfalls. See "Item 2. Properties" and 
Note J of Notes to Consolidated Financial Statements included in "Item 8. Financial Statements and Supplementary Data" 
for additional information regarding the Company's firm purchase, gathering, processing, transportation and fractionation 
commitments.

Capital  resources. The  Company's  primary  capital  resources  are  cash  and  cash  equivalents,  short-term  and  long-term 
investment securities, net cash provided by operating activities, proceeds from divestitures and proceeds from financing activities 
(principally borrowings under the Company's credit facility or issuances of debt or equity securities). If internal cash flows do not 
meet the Company's expectations, the Company may reduce its level of capital expenditures, and/or fund a portion of its capital 
expenditures (i) by using cash on hand, (ii) through sales of short-term and long-term investments, (iii) with borrowings under 
the Company's credit facility, (iv) through issuances of debt or equity securities or (v) through other sources, such as sales of 
nonstrategic assets.

57

 
 
 
 
PIONEER NATURAL RESOURCES COMPANY

Operating activities. Net cash provided by operating activities for the years ended December 31, 2016, 2015 and 2014 was 
$1.5 billion, $1.2 billion and $2.4 billion, respectively. The increase in net cash flow provided by operating activities in 2016, as 
compared to 2015, was primarily due to increases in the Company's oil and gas revenues in 2016 as a result of increased sales 
volumes (partially offset by decreases in oil and gas prices), reductions in operating costs and a decrease in funds used to satisfy 
working capital obligations. The decrease in net cash flows provided by operating activities in 2015, as compared to 2014, was 
primarily due to declines in average oil, NGL and gas prices, partially offset by an increase in net cash receipts from derivative 
settlements and an increase in oil and gas sales volumes.

Asset  divestitures.  In  July  2015,  the  Company  completed  the  sale  of  its  50.1  percent  interest  in  EFS  Midstream  to  an 
unaffiliated third party, with the Company receiving total consideration of $1.0 billion, of which $530 million was received at 
closing and the remaining $501 million was received in July 2016. 

During 2014, the Company's major asset sales included the sale of (i) the Company's Hugoton assets for cash proceeds of 
$328 million, (ii) the Company's Barnett Shale assets for cash proceeds of $150 million, (iii) Pioneer Alaska for cash proceeds of 
$267 million, (iv) Sendero for cash proceeds of $31 million (Sendero had $14 million of cash on hand at the time of the sale) and 
(v) proved and unproved properties in Gaines and Dawson counties in the Spraberry field in West Texas for cash proceeds of $72 
million. 

See Note C of Notes to Consolidated Financial Statements included in "Item 8. Financial Statements and Supplementary 

Data" for more information regarding the Company's asset divestitures.

Financing  activities.  Net  cash  provided  by  financing  activities  during  2016  was  $2.0  billion,  as  compared  to  net  cash 
provided by financing activities during 2015 and 2014 of $958 million and $965 million, respectively. The following provides a 
description of the Company's significant financing activities during 2016, 2015 and 2014:

•  During July 2016, the Company repaid $455 million associated with the maturity of the Company's 5.875% senior 

notes;

•  During June 2016, the Company completed the sale of 6.0 million shares of its common stock at a per-share price, 

after underwriter discounts and offering expenses, of $155.27, resulting in $937 million of net cash proceeds;

•  During January 2016, the Company completed the sale of 13.8 million shares of its common stock at a per-share price, 

after underwriter discounts and offering expenses, of $115.78, resulting in $1.6 billion of net cash proceeds;

•  During December 2015, the Company issued $500 million of 3.45% Senior Notes due 2021 and $500 million of 4.45%
Senior  Notes  due  2026  and  received  combined  proceeds,  net  of  $9  million  of  underwriter  discounts  and  offering 
expenses, of $991 million;

•  During August 2015, the Company amended its credit facility with a syndicate of financial institutions to extend its 

maturity to August 2020, while maintaining aggregate loan commitments of $1.5 billion; and

•  During November 2014, the Company completed the sale of 5.75 million shares of its common stock at a per-share 

price, after underwriter discounts and offering expenses, of $170.50, resulting in $980 million of net cash proceeds.

See Note G of Notes to Consolidated Financial Statements included in "Item 8. Financial Statements and Supplementary 

Data" for additional information regarding the significant debt financing activities.

As  the  Company  pursues  its  strategy,  it  may  utilize  various  financing  sources,  including  fixed  and  floating  rate  debt, 
convertible securities, preferred stock or common stock. The Company cannot predict the timing or ultimate outcome of any such 
actions as they are subject to market conditions, among other factors. The Company may also issue securities in exchange for oil 
and gas properties, stock or other interests in other oil and gas companies or related assets. Additional securities may be of a class 
preferred to common stock with respect to such matters as dividends and liquidation rights and may also have other rights and 
preferences as determined by the Board.

Liquidity. The Company's principal sources of short-term liquidity are cash and cash equivalents, sales of short-term and 
long-term investments and unused borrowing capacity under the Company's credit facility. As of December 31, 2016, the Company 
had no outstanding borrowings under the credit facility, leaving $1.5 billion of unused borrowing capacity. The Company was in 
compliance with all of its debt covenants. The Company's credit facility contains certain financial covenants, which include the 
maintenance of a ratio of total debt to book capitalization, subject to certain adjustments, not to exceed .60 to 1.0, which is above 
the Company's December 31, 2016 ratio of .19 to 1.0. The Company also had cash on hand of $1.1 billion, short-term investments 
of $1.4 billion and long-term investments of $420 million as of December 31, 2016. If internal cash flows do not meet the Company's 
expectations, the Company may reduce its level of capital expenditures, reduce dividend payments, and/or fund a portion of its 
capital  expenditures  using  cash  on  hand,  sales  of  short-term  and  long-term  investments,  availability  under  its  credit  facility, 
issuances of debt or equity securities or other sources, such as sales of nonstrategic assets. The Company cannot provide any 
assurance that needed short-term or long-term liquidity will be available on acceptable terms or at all. Although the Company 

58

PIONEER NATURAL RESOURCES COMPANY

expects that the combination of internal operating cash flows, cash and cash equivalents on hand, sales of short-term and long-
term investments and, if necessary, available capacity under the Company's credit facility will be adequate to fund 2017 capital 
expenditures and dividend payments and provide adequate liquidity to fund other needs, including debt maturities, no assurances 
can be given that such funding sources will be adequate to meet the Company's future needs.

Debt ratings. The Company is rated as investment grade by three credit rating agencies. The Company receives debt credit 
ratings from several of the major ratings agencies, which are subject to regular reviews. The Company believes that each of the 
rating agencies considers many factors in determining the Company's ratings, including: (i) production growth opportunities, (ii) 
liquidity, (iii) debt levels, (iv) asset composition and (v) proved reserve mix. A reduction in the Company's debt ratings could 
increase the interest rates that the Company incurs on credit facility borrowings and could negatively affect the Company's ability 
to obtain additional financing or the interest rate, fees and other terms associated with such additional financing. 

Book capitalization and current ratio. The Company's net book capitalization at December 31, 2016 was $10.6 billion, 
consisting of $1.1 billion of cash and cash equivalents, short-term and long-term investments of $1.9 billion, debt of $3.2 billion
and equity of $10.4 billion. The Company's net debt to book capitalization decreased to two percent at December 31, 2016 from 
21 percent at December 31, 2015, primarily due to the Company's issuance of 19.8 million shares of common stock during 2016 
for cash proceeds of $2.5 billion. The Company's ratio of current assets to current liabilities decreased to 2.11 to 1.00 at December 
31, 2016, as compared to 2.19 to 1.00 at December 31, 2015.

Critical Accounting Estimates

The Company prepares its consolidated financial statements for inclusion in this Report in accordance with GAAP. See 
Note B of Notes to Consolidated Financial Statements included in "Item 8. Financial Statements and Supplementary Data" for a 
comprehensive discussion of the Company's significant accounting policies. GAAP represents a comprehensive set of accounting 
and disclosure rules and requirements, the application of which requires management judgments and estimates including, in certain 
circumstances,  choices  between  acceptable  GAAP  alternatives. The  following  is  a  discussion  of  the  Company's  most  critical 
accounting estimates, judgments and uncertainties that are inherent in the Company's application of GAAP.

Asset retirement obligations. The Company has significant obligations to remove tangible equipment and facilities and to 
restore the land at the end of oil and gas production operations. The Company's removal and restoration obligations are primarily 
associated  with  plugging  and  abandoning  wells.  Estimating  the  future  restoration  and  removal  costs  is  difficult  and  requires 
management to make estimates and judgments because most of the removal obligations are many years in the future and contracts 
and regulations often have vague descriptions of what constitutes removal. Asset removal technologies and costs are constantly 
changing, as are regulatory, political, environmental, safety and public relations considerations.

Inherent in the present value calculation are numerous assumptions and judgments including the ultimate settlement amounts, 
credit-adjusted discount rates, timing of settlement and changes in the legal, regulatory, environmental and political environments. 
To  the  extent  future  revisions  to  these  assumptions  impact  the  present  value  of  the  existing  asset  retirement  obligations,  a 
corresponding adjustment is generally made to the oil and gas property balance. See Notes B and I of Notes to Consolidated 
Financial Statements included in "Item 8. Financial Statements and Supplementary Data" for additional information regarding the 
Company's asset retirement obligations.

Successful efforts method of accounting. The Company utilizes the successful efforts method of accounting for oil and 
gas producing activities as opposed to the alternate acceptable full cost method. In general, the Company believes that net assets 
and net income are more conservatively measured under the successful efforts method of accounting for oil and gas producing 
activities than under the full cost method, particularly during periods of active exploration. The critical difference between the 
successful efforts method of accounting and the full cost method is as follows: under the successful efforts method, exploratory 
dry holes and geological and geophysical exploration costs are charged against earnings during the periods in which they occur; 
whereas, under the full cost method of accounting, such costs and expenses are capitalized as assets, pooled with the costs of 
successful wells and charged against the earnings of future periods as a component of depletion expense. During 2016, 2015 and 
2014, the Company recognized exploration, abandonment, geological and geophysical expense from continuing operations of 
$119  million,  $99  million  and  $177  million,  respectively.  During  2014,  the  Company  recognized  exploration,  abandonment, 
geological and geophysical expense from discontinued operations of $4 million under the successful efforts method.

Proved reserve estimates. Estimates of the Company's proved reserves included in this Report are prepared in accordance 

with GAAP and SEC guidelines. The accuracy of a reserve estimate 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 judgment of the persons preparing the estimate.

59

PIONEER NATURAL RESOURCES COMPANY

The Company's proved reserve information included in this Report as of December 31, 2016, 2015 and 2014 was prepared 
by the Company's engineers and audited by independent petroleum engineers with respect to the Company's major properties. 
Estimates prepared by third parties may be higher or lower than those included herein.

Because these estimates depend on many assumptions, all of which may substantially differ from future actual results, 
proved reserve estimates will be different from the quantities of oil and gas that are ultimately recovered. In addition, results of 
drilling, testing and production after the date of an estimate may justify, positively or negatively, material revisions to the estimate 
of proved reserves.

It should not be assumed that the Standardized Measure included in this Report as of December 31, 2016 is the current 
market value of the Company's estimated proved reserves. In accordance with SEC requirements, the Company based the 2016 
Standardized Measure on a twelve month average of commodity prices on the first day of the month and prevailing costs on the 
date of the estimate. Actual future prices and costs may be materially higher or lower than the prices and costs utilized in the 
estimate.  See  "Item  1A.  Risk  Factors,"  "Item  2.  Properties"  and  Supplementary  Information  included  in  "Item  8.  Financial 
Statements and Supplementary Data" for additional information regarding estimates of proved reserves.

The Company's estimates of proved reserves materially impact depletion expense. If the estimates of proved reserves decline, 
the rate at which the Company records depletion expense will increase, reducing future net income. Such a decline may result 
from lower commodity prices, which may make it uneconomical to drill for and produce higher cost fields. In addition, a decline 
in proved reserve estimates may impact the outcome of the Company's assessment of its proved properties and goodwill for 
impairment.

Impairment of proved oil and gas properties. The Company reviews its proved properties to be held and used whenever 
management  determines  that  events  or  circumstances  indicate  that  the  recorded  carrying  value  of  the  properties  may  not  be 
recoverable. Management assesses whether or not an impairment provision is necessary based upon estimated future recoverable 
proved and risk-adjusted probable and possible reserves, Management's Price Outlooks, production and capital costs expected to 
be incurred to recover the reserves, discount rates commensurate with the nature of the properties and net cash flows that may be 
generated by the properties. Proved oil and gas properties are reviewed for impairment at the level at which depletion of proved 
properties is calculated. See Notes B and D of Notes to Consolidated Financial Statements included in "Item 8. Financial Statements 
and Supplementary Data" for information regarding the Company's impairment assessments.

Impairment of unproved oil and gas properties. At December 31, 2016, the Company carried unproved property costs of 
$486 million. Management assesses unproved oil and gas properties for impairment on a project-by-project basis. Management's 
impairment assessments include evaluating the results of exploration activities, Management's Price Outlooks and planned future 
sales or expiration of all or a portion of such projects.

Suspended  wells.  The  Company  suspends  the  costs  of  exploratory  wells  that  discover  hydrocarbons  pending  a  final 
determination of the commercial potential of the discovery. The ultimate disposition of these well costs is dependent on the results 
of future drilling activity and development decisions. If the Company decides not to pursue additional appraisal activities or 
development of these fields, the costs of these wells will be charged to exploration and abandonment expense.

The Company does not carry the costs of drilling an exploratory well as an asset in its consolidated balance sheets following 

the completion of drilling unless both of the following conditions are met:

(i)  The well has found a sufficient quantity of reserves to justify its completion as a producing well; and
(ii)  The Company is making sufficient progress assessing the reserves and the economic and operating viability of the 

project.

Due to the capital intensive nature and the geographical location of certain projects, it may take an extended period of time 
to evaluate the future potential of an exploration project and economics associated with making a determination on its commercial 
viability. In these instances, the project's feasibility is not contingent upon price improvements or advances in technology, but 
rather the Company's ongoing efforts and expenditures related to accurately predicting the hydrocarbon recoverability based on 
well information, gaining access to other companies' production, transportation or processing facilities and/or getting partner 
approval to drill additional appraisal wells. These activities are ongoing and being pursued constantly. Consequently, the Company's 
assessment of suspended exploratory well costs is continuous until a decision can be made that the well has found proved reserves 
to sanction the project or is noncommercial and is impaired. See Note F of Notes to Consolidated Financial Statements included 
in  "Item  8.  Financial  Statements  and  Supplementary  Data"  for  additional  information  regarding  the  Company's  suspended 
exploratory well costs.

Deferred  tax  asset  valuation  allowances.  The  Company  continually  assesses  both  positive  and  negative  evidence  to 
determine whether it is more likely than not that its deferred tax assets will be realized prior to their expiration. Pioneer monitors 

60

PIONEER NATURAL RESOURCES COMPANY

Company-specific, oil and gas industry and worldwide economic factors and reassesses the likelihood that the Company's net 
operating loss carryforwards and other deferred tax attributes in each jurisdiction will be utilized prior to their expiration. There 
can be no assurance that facts and circumstances will not materially change and require the Company to establish deferred tax 
asset valuation allowances in certain jurisdictions in a future period. 

Uncertain tax positions. The Company recognizes the tax benefit from an uncertain tax position only if it is more likely 
than not that the tax position will be sustained upon examination by the taxing authorities, based upon the technical merits of the 
position. As of December 31, 2016, the Company had unrecognized tax benefits of $112 million resulting from research and 
experimental expenditures related to horizontal drilling and completion innovations. If all or a portion of the unrecognized tax 
benefit is sustained upon examination by the taxing authorities, the tax benefit will be recognized as a reduction to the Company's 
deferred tax liability and will affect the Company's effective tax rate in the period it is recognized. See Note O of Notes to the 
Consolidated Financial Statements included in "Item 8. Financial Statements and Supplementary Data" for additional information 
regarding uncertain tax positions.

Goodwill impairment. The Company reviews its goodwill for impairment at least annually. During the third quarter of 2016 
and the fourth quarter of 2015, the Company performed a qualitative assessment of goodwill to assess whether it was more likely 
than not that the fair value of the Company's reporting unit was less than its carrying amount as a basis for determining whether 
it was necessary to perform the two-step goodwill impairment test. The Company determined that it was more likely than not that 
the Company's goodwill was not impaired. There is considerable judgment involved in estimating fair values, particularly in 
determining the valuation methodologies to utilize, the estimation of proved reserves as described above and the weighting of 
different valuation methodologies applied. During the third quarter of 2015, the Company performed a quantitative assessment 
of goodwill and determined that there was no impairment. See Note B of Notes to Consolidated Financial Statements included in 
"Item 8. Financial Statements and Supplementary Data" for additional information regarding goodwill and assessments of goodwill 
for impairment.

Litigation and environmental contingencies. The Company makes judgments and estimates in recording liabilities for 
ongoing litigation and environmental remediation. Actual costs can vary from such estimates for a variety of reasons. The costs 
to settle litigation can vary from estimates based on differing interpretations of laws and opinions and assessments on the amount 
of damages. Similarly, environmental remediation liabilities are subject to change because of changes in laws and regulations, 
developing information relating to the extent and nature of site contamination and improvements in technology. A liability is 
recorded for these types of contingencies if the Company determines the loss to be both probable and reasonably estimable. See 
Note J of Notes to Consolidated Financial Statements included in "Item 8. Financial Statements and Supplementary Data" for 
additional information regarding the Company's commitments and contingencies.

Valuation of stock-based compensation. The Company calculates the fair value of stock-based compensation using various 
valuation methods. The valuation methods require the use of estimates to derive the inputs necessary to determine fair value. The 
Company utilizes (i) the Black-Scholes option pricing model to measure the fair value of stock options, (ii) the closing stock price 
on the day prior to the date of grant for the fair value of restricted stock awards, (iii) the closing stock price on the balance sheet 
date for restricted stock awards that are expected to be settled wholly or partially in cash on their vesting date and (iv) the Monte 
Carlo simulation method for the fair value of performance unit awards. See Note H of Notes to Consolidated Financial Statements 
included  in  "Item  8.  Financial  Statements  and  Supplementary  Data"  for  information  regarding  the  Company's  stock-based 
compensation.

Valuation of other assets and liabilities at fair value. The Company periodically measures and records certain assets and 
liabilities at fair value. The assets and liabilities that the Company measures and records at fair value on a recurring basis include 
trading securities, commodity derivative contracts and interest rate contracts. Other assets are not measured at fair value on an 
ongoing basis, but are subject to fair value adjustments in certain circumstances. The assets and liabilities that the Company 
measures and records at fair value on a nonrecurring basis include inventory, proved and unproved oil and gas properties, assets 
acquired and liabilities assumed in business combinations and other long-lived assets that are written down to fair value when 
they are impaired or held for sale. The Company also measures and discloses certain financial assets and liabilities at fair value, 
such as long-term debt and investments. The valuation methods used by the Company to measure the fair values of these assets 
and liabilities may require considerable management judgment and estimates to derive the inputs necessary to determine fair value 
estimates, such as future prices, credit-adjusted risk-free rates and current volatility factors. See Note D of Notes to Consolidated 
Financial Statements included in "Item 8. Financial Statements and Supplementary Data" for information regarding the methods 
used by management to estimate the fair values of these assets and liabilities.

61

PIONEER NATURAL RESOURCES COMPANY

New Accounting Pronouncements

The effects of new accounting pronouncements are discussed in Note B of Notes to Consolidated Financial Statements 

included in "Item 8. Financial Statements and Supplementary Data."

62

 
PIONEER NATURAL RESOURCES COMPANY

ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

The following quantitative and qualitative information is provided about financial instruments to which the Company was 
a party as of December 31, 2016, and from which the Company may incur future gains or losses from changes in commodity 
prices or interest rates.

The fair values of the Company's long-term debt and derivative contracts are determined based on observable inputs and 
utilizing the Company's valuation models and applications. As of December 31, 2016, the Company was a party to swap contracts, 
collar contracts and collar contracts with short put options. See Notes D and E of Notes to Consolidated Financial Statements 
included in "Item 8. Financial Statements and Supplementary Data" for additional information regarding the Company's fair value 
measurements and derivative contracts. The following table reconciles the changes that occurred in the fair values of the Company's 
open derivative contracts during 2016:

Derivative Contract Net Assets (Liabilities)

Commodities

Interest Rate

Total

Fair value of contracts outstanding as of December 31, 2015
Changes in contract fair values
Contract maturities
Payments associated with entering new contracts
Contract terminations
Fair value of contracts outstanding as of December 31, 2016

Quantitative Disclosures

$

$

(in millions)
$

757
(174)
(681)
24
(2)
(76) $

— $
13
—
—
(7)
6

$

757
(161)
(681)
24
(9)
(70)  

Interest rate sensitivity. See Note G of Notes to Consolidated Financial Statements included in "Item 8. Financial Statements 
and Supplementary Data" and Capital Commitments, Capital Resources and Liquidity included in "Item 7. Management's Discussion 
and Analysis of Financial Condition and Results of Operations" for information regarding the Company's outstanding debt and debt 
transactions.

The following table provides information about financial instruments to which the Company was a party as of December 31, 
2016 and that are sensitive to changes in interest rates. The table presents debt maturities by expected maturity dates, the weighted 
average interest rates expected to be paid on the debt given current contractual terms and market conditions, and the aggregate 
estimated fair value of the Company's outstanding debt. For fixed rate debt, the weighted average interest rates represent the contractual 
fixed rates that the Company was obligated to periodically pay on the debt as of December 31, 2016. Although the Company had no 
outstanding variable rate debt as of December 31, 2016, the average variable contractual rates for its credit facility (that matures in 
August 2020) projected forward proportionate to the forward yield curve for LIBOR on February 14, 2017 is presented in the table 
below. 

63

 
 
 
 
 
PIONEER NATURAL RESOURCES COMPANY

INTEREST RATE SENSITIVITY
DEBT OBLIGATIONS AS OF DECEMBER 31, 2016 

Total Debt:

Fixed rate principal maturities
(a)
Weighted average fixed interest
rate

Weighted average variable
interest rate

Interest Rate Swaps:

Notional debt amount (b)

Year Ending December 31,

Asset 
(Liability)
Fair Value at
December 31,

2017

2018

2019

2020

2021

Thereafter

Total

2016

(dollars in millions)

$

485

$

450

$

— $

450

$

500

$ 1,350

$

3,235

$

(3,446)

5.35%

5.11%

5.00%

4.42%

4.72%

5.49%

2.83%

3.36%

3.73%

3.98%

$

100

$

— $

— $

— $

— $

—

$

6

Fixed rate payable (%)
Variable rate receivable (%)(c)

1.81%

2.58%

Represents maturities of principal amounts excluding debt issuance costs and debt issuance discounts.

 _______________________
(a) 
(b)  As of December 31, 2016, the Company was a party to interest rate derivative contracts whereby the Company will receive 
the three-month LIBOR rate for the 10-year period from December 2017 to December 2027 in exchange for paying a weighted 
average fixed rate of 1.81 percent on a notional amount of $100 million on December 15, 2017.

(c)   The variable rate receivable represents the February 14, 2017 forecasted three-month LIBOR rate for the 10-year period from 

December 2017 through December 2027.

Commodity derivative instruments and price sensitivity. The following table provides information about the Company's oil, 
NGL and gas derivative financial instruments that were sensitive to changes in oil, NGL and gas prices as of December 31, 2016. 
Although mitigated by the Company's derivative activities, declines in oil, NGL and gas prices would reduce the Company's revenues.

The Company manages commodity price risk with derivative contracts, such as swap contracts, collar contracts and collar 
contracts with short put options. Swap contracts provide a fixed price for a notional amount of sales volumes. Collar contracts provide 
minimum ("floor" or "long put") and maximum ("ceiling") prices on a notional amount of sales volumes, thereby allowing some 
price participation if the relevant index price closes above the floor price. Collar contracts with short put options differ from other 
collar contracts by virtue of the short put option price, below which the Company's realized price will exceed the variable market 
prices by the long put-to-short put price differential.

See  Notes  B,  D  and  E  of  Notes  to  Consolidated  Financial  Statements  included  in  "Item  8.  Financial  Statements  and 
Supplementary Data" for a description of the accounting procedures followed by the Company for its derivative financial instruments 
and for specific information regarding the terms of the Company's derivative financial instruments that are sensitive to changes in 
oil, NGL or gas prices.

64

 
 
 
 
 
 
PIONEER NATURAL RESOURCES COMPANY

DERIVATIVE FINANCIAL INSTRUMENTS AS OF DECEMBER 31, 2016 

2017

First
Quarter

Second
Quarter

Third
Quarter

Fourth
Quarter

Year Ending
December 31,
2018

Asset
(Liability)
Fair Value at
December 31,
2016 (a)

(in millions)

Oil Derivatives:

Average daily notional Bbl volumes:

Collar contracts

Weighted average ceiling price per Bbl
Weighted average floor price per Bbl

Collar contracts with short puts (b)

Weighted average ceiling price per Bbl
Weighted average floor price per Bbl
Weighted average short put price per Bbl

Average forward NYMEX oil prices (c)

Rollfactor swap contracts (d)

Weighted average fixed price per Bbl

Average forward NYMEX rollfactor prices (c)

Midland-Cushing index swap contracts
Weighted average fixed price per Bbl
Average forward basis differential prices (e)

NGL Derivatives: (f)

Average daily notional Bbl volumes:

Ethane collar contracts (g)

Weighted average ceiling price per Bbl
Weighted average floor price per Bbl

Average forward ethane prices (c)

Butane collar contracts with short puts (h)
Weighted average ceiling price per Bbl
Weighted average floor price per Bbl
Weighted average short put price per Bbl

Average forward butane prices (c)

Gas Derivatives:

Average daily notional MMBtu volumes:

Collar contracts with short puts (i)

Weighted average ceiling price per MMBtu
Weighted average floor price per MMBtu
Weighted average short put price per MMBtu

Average forward NYMEX gas prices (c)

Basis swap contracts

Mid-Continent index swap contracts (j)
Weighted average fixed price per MMBtu

Average forward basis differential prices (k)

Permian Basin index swap contracts (l)

Weighted average fixed price per MMBtu
Average forward basis differential prices (m)

 _____________________

6,000
$ 70.40
$ 50.00
119,000
$ 61.36
$ 48.67
$ 40.65
$ 53.20
13,111

6,000
$ 70.40
$ 50.00
129,000
$ 61.19
$ 48.46
$ 40.45
$ 54.10
20,000

6,000
$ 70.40
$ 50.00
147,000
$ 62.03
$ 49.81
$ 41.07
$ 54.96
20,000

6,000
$ 70.40
$ 50.00
155,000
$ 62.12
$ 49.82
$ 41.02
$ 55.29
20,000

$
$

$
$
$
$

$ (0.32) $ (0.32) $ (0.32) $ (0.32) $
$ (0.65) $ (0.45) $ (0.18) $ (0.06) $

—
— $
— $

$
$

—

3,000

—
— $ — $ (0.65) $
— $ — $ (0.85) $

3,000
3,000
$ 11.83
$ 11.83
$
8.68
$
8.68
$ 10.96
$ 10.76
—
2,000
— $ 36.12
— $ 29.25
— $ 23.40
— $ 36.33

$
$
$
$

3,000
$ 11.83
$
8.68
$ 11.55
2,000
$ 36.12
$ 29.25
$ 23.40
$ 36.40

$
$
$

3,000
$ 11.83
$
8.68
$ 12.39
—
— $
— $
— $
— $

$
$
$
$

3

(50)

—

—

(1)

(1)

$

— $
—
—
20,000
65.14
50.00
40.00
55.28

— $
—
—
740
(0.65)
(1.17)

$

— $
—
—
—
— $
—
—
—
—

190,000
3.51
$
2.93
$
2.46
$
2.91
$

190,000
3.51
$
2.93
$
2.46
$
3.08
$

190,000
3.51
$
2.93
$
2.46
$
3.22
$

190,000
3.51
$
2.93
$
2.46
$
3.32
$

$
$
$
$

57,397
3.51
2.85
2.33
3.05

$

(27)

$

—

45,000

45,000

45,000

45,000

$ (0.32) $ (0.32) $ (0.32) $ (0.32) $

$ (0.26) $ (0.35) $ (0.33) $ (0.27) $

40,000

—

—

$

$

0.37

0.15

$

$

— $ — $

— $ — $

—

— $

— $

—
—

—

—

—

—

65

 
 
 
PIONEER NATURAL RESOURCES COMPANY

(a) 

In  accordance  with  Financial Accounting  Standards  Board Accounting  Standards  Codification  ("ASC")  210-20  and ASC 
815-10,  the  Company  classifies  the  fair  value  amounts  of  derivative  assets  and  liabilities  executed  under  master  netting 
arrangements as net derivative assets or net derivative liabilities, as the case may be. The net asset and liability amounts shown 
above have been provided on a commodity contract-type basis, which may differ from their master netting arrangements 
classifications.

(b)  During the year ended December 31, 2016, the Company paid $24 million to convert 33,000 Bbls per day of 2017 collar 
contracts with short puts into new 2017 collar contracts with short puts with a ceiling price of $60.76 per Bbl, a floor price 
of $45.00 per Bbl and a short put price of $40.00 per Bbl. 
(c) 
The average forward NYMEX oil, oil rollfactors, ethane, butane and gas prices are based on February 14, 2017 market quotes.
(d)  Represents swaps that fix the difference between (i) each day's price per Bbl of WTI for the first nearby month less (ii) the 
price per Bbl of WTI for the second nearby NYMEX month, multiplied by .6667; plus (iii) each day's price per Bbl of WTI 
for the first nearby month less (iv) the price per Bbl of WTI for the third nearby NYMEX month, multiplied by .3333. 
The average forward basis differential prices are based on February 14, 2017 market quotes for basis differentials between 
the Midland, Texas oil prices and WTI prices at Cushing, Oklahoma.
Subsequent to December 31, 2016, the Company entered into (i) 2,000 Bbls per day of butane swap contracts for April 2017 
through September 2017 with a fixed price of $34.86 per Bbl and (ii) 6,920 MMBtu per day of ethane basis swap contracts 
for March 2017 through December 2019 with a fixed price of $1.60 per MMBtu. The basis swaps fix the basis differential on 
a HH MMBtu equivalent basis.  The Company will receive the HH price plus the price differential on 6,920 MMBtu per day, 
which is equivalent to 2,500 Bbls per day of ethane. 

(e) 

(f) 

(g)  Represent derivative contracts that reduce the price volatility of ethane forecasted for sale by the Company at Mont Belvieu, 

Texas-posted prices. 

(h)  Represent collar contracts with short puts that reduce the price volatility of butane forecasted for sale by the Company at Mont 

(i) 

(j) 

(k) 

(l) 

Belvieu, Texas-posted prices.
Subsequent to December 31, 2016, the Company entered into additional gas collar contracts with short puts for 20,000 MMBtu 
per day of January 2018 through March 2018 production with a ceiling price of $4.20 per MMBtu, a floor price of $3.55 per 
MMBtu and a short put price of $2.85 per MMBtu.
Represent swaps that fix the basis differentials between the index prices at which the Company sells its Mid-Continent gas 
and the NYMEX Henry Hub index price used in collar contracts with short puts. 
The average forward basis differential prices are based on February 14, 2017 market quotes for basis differentials between 
the relevant index prices and NYMEX-quoted forward prices.
Represent swaps that fix the basis differentials between Permian Basin index prices and southern California index prices for 
Permian Basin gas forecasted for sale in southern California.

(m)  The average forward basis differential prices are based on February 14, 2017 market quotes for basis differentials between 

Permian Basin index prices and southern California index prices.

Marketing and basis derivative activities. Periodically, the Company enters into buy and sell marketing arrangements to fulfill 
firm pipeline transportation commitments. Associated with these marketing arrangements, the Company may enter into index swaps 
to mitigate price risk. As of December 31, 2016, the Company did not have any marketing derivatives outstanding.

Diesel derivatives. Periodically, the Company enters into diesel derivative swap contracts that mitigate fuel price risk. The 
diesel derivative swap contracts are priced at an index that is highly correlated to the prices that the Company incurs to fuel its drilling 
rigs and fracture stimulation fleet equipment. During the fourth quarter of 2016, the Company terminated 2017 diesel swap contracts 
for 1,000 Bbls per day for cash proceeds of $2 million. As of December 31, 2016, the Company did not have any diesel derivative 
contracts outstanding. 
Qualitative Disclosures

The Company's primary market risk exposures are to changes in commodity prices and interest rates. These risks did not 

change materially from December 31, 2015 to December 31, 2016.

Non-derivative financial instruments. The Company is a borrower under fixed rate debt instruments and, from time to 
time, under a variable rate debt instrument that gives rise to interest rate risk. The Company's objective in borrowing under fixed 
or variable rate debt is to satisfy capital requirements while minimizing the Company's costs of capital. The Company also enters 
into oil and gas purchase and sale transactions with third parties to satisfy unused pipeline capacity commitments and to diversify 
a portion of the Company's WTI oil sales to a Gulf Coast market price. See Note G of Notes to Consolidated Financial Statements 
included in "Item 8. Financial Statements and Supplementary Data" for a discussion of the Company's debt instruments.

Derivative financial instruments. The Company, from time to time, utilizes commodity price and interest rate derivative 
contracts to mitigate commodity price and interest rate risks in accordance with policies and guidelines approved by the Board. 
In accordance with those policies and guidelines, the Company's executive management determines the appropriate timing and 
extent of derivative transactions.

66

ITEM 8.

FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

Index to Consolidated Financial Statements

Consolidated Financial Statements of Pioneer Natural Resources Company:

Report of Independent Registered Public Accounting Firm
Consolidated Balance Sheets as of December 31, 2016 and 2015
Consolidated Statements of Operations for the Years Ended December 31, 2016, 2015 and 2014
Consolidated Statements of Equity for the Years Ended December 31, 2016, 2015 and 2014
Consolidated Statements of Cash Flows for the Years Ended December 31, 2016, 2015 and 2014
Notes to Consolidated Financial Statements
Unaudited Supplementary Information

Page

68
69
71
72
74
75
107

67

 
 
REPORT OF INDEPENDENT REGISTERED PUBLIC
ACCOUNTING FIRM

The Board of Directors and Stockholders of
Pioneer Natural Resources Company

We have audited the accompanying consolidated balance sheets of Pioneer Natural Resources Company (the "Company") 
as of December 31, 2016 and 2015, and the related consolidated statements of operations, equity and cash flows for each of the 
three years in the period ended December 31, 2016. These financial statements are the responsibility of the Company's management. 
Our responsibility is to express an opinion on these financial statements 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, the financial statements referred to above present fairly, in all material respects, the consolidated financial 
position of Pioneer Natural Resources Company at December 31, 2016 and 2015, and the consolidated results of its operations 
and its cash flows for each of the three years in the period ended December 31, 2016, in conformity with U.S. generally accepted 
accounting principles.

 We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United 
States), Pioneer Natural Resources Company's internal control over financial reporting as of December 31, 2016, based on criteria 
established in Internal Control — Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway 
Commission (2013 framework) and our report dated February 17, 2017 expressed an unqualified opinion thereon.

Dallas, Texas
February 17, 2017 

/s/ Ernst & Young LLP

68

 
PIONEER NATURAL RESOURCES COMPANY

CONSOLIDATED BALANCE SHEETS
(in millions)

ASSETS

Current assets:

Cash and cash equivalents
Short-term investments

Accounts receivable:

Trade, net
Due from affiliates
Income taxes receivable
Inventories
Notes receivable
Derivatives
Other

Total current assets

Property, plant and equipment, at cost:

Oil and gas properties, using the successful efforts method of accounting:

Proved properties
Unproved properties

Accumulated depletion, depreciation and amortization

Total property, plant and equipment

Long-term investments
Goodwill
Other property and equipment, net
Derivatives
Other assets, net

December 31,

2016

2015

$

$

1,118
1,441

517
1
3
181
—
14
23
3,298

18,566
486
(8,211)
10,841
420
272
1,529
—
99
16,459

$

$

1,391
—

384
1
43
155
498
694
28
3,194

16,631
169
(6,778)
10,022
—
272
1,523
64
79
15,154

The accompanying notes are an integral part of these consolidated financial statements.

69

 
 
 
 
PIONEER NATURAL RESOURCES COMPANY

CONSOLIDATED BALANCE SHEETS (continued)

(in millions, except share data)

LIABILITIES AND EQUITY

December 31,

2016

2015

Current liabilities:

Accounts payable:

Trade
Due to affiliates

Interest payable
Income taxes payable
Current portion of long-term debt
Derivatives
Other

Total current liabilities

Long-term debt
Derivatives
Deferred income taxes
Other liabilities
Equity:

Common stock, $.01 par value; 500,000,000 shares authorized; 173,221,845 and 152,775,920
shares issued as of December 31, 2016 and 2015, respectively
Additional paid-in capital
Treasury stock, at cost; 3,497,742 and 3,396,220 shares as of December 31, 2016 and 2015,
respectively
Retained earnings

Total equity attributable to common stockholders
Noncontrolling interest in consolidated subsidiaries

Total equity

Commitments and contingencies

$

$

741
134
68
—
485
77
61
1,566
2,728
7
1,397
350

2
8,892

(218)
1,728
10,404
7
10,411

798
85
65
2
448
—
64
1,462
3,207
1
1,776
333

2
6,267

(199)
2,298
8,368
7
8,375

$

16,459

$

15,154

The accompanying notes are an integral part of these consolidated financial statements.

70

 
 
 
PIONEER NATURAL RESOURCES COMPANY

CONSOLIDATED STATEMENTS OF OPERATIONS
(in millions, except per share data)

Revenues and other income:

Oil and gas
Sales of purchased oil and gas
Interest and other
Derivative gains (losses), net
Gain on disposition of assets, net

Costs and expenses:

Oil and gas production
Production and ad valorem taxes
Depletion, depreciation and amortization
Purchased oil and gas
Impairment of oil and gas properties
Exploration and abandonments
General and administrative
Accretion of discount on asset retirement obligations
Interest
Other

Income (loss) from continuing operations before income taxes
Income tax benefit (provision)
Income (loss) from continuing operations
Loss from discontinued operations, net of tax
Net income (loss) attributable to common stockholders
Basic earnings per share attributable to common stockholders:

Income (loss) from continuing operations
Loss from discontinued operations
Net income (loss)

Diluted earnings per share attributable to common stockholders:

Income (loss) from continuing operations
Loss from discontinued operations
Net income (loss)

Weighted average shares outstanding:

Basic
Diluted

Year Ended December 31,

2016

2015

2014

$

$

$

$

$

$

$

2,418
1,533
32
(161)
2
3,824

581
136
1,480
1,597
32
119
325
18
207
288
4,783
(959)
403
(556)
—
(556) $

(3.34) $
—
(3.34) $

(3.34) $
—
(3.34) $

$

2,178
964
22
879
782
4,825

717
145
1,385
1,003
1,056
99
327
12
187
315
5,246
(421)
155
(266)
(7)
(273) $

(1.79) $
(0.04)
(1.83) $

(1.79) $
(0.04)
(1.83) $

166
166

149
149

3,599
726
26
712
9
5,072

693
220
1,047
703
—
177
333
12
184
106
3,475
1,597
(556)
1,041
(111)
930

7.17
(0.77)
6.40

7.15
(0.77)
6.38

144
144

The accompanying notes are an integral part of these consolidated financial statements.

71

 
 
 
 
PIONEER NATURAL RESOURCES COMPANY

CONSOLIDATED STATEMENTS OF EQUITY
(in millions, except share data and dividends per share)

Balance as of December 31, 2013
Issuance of common stock
Dividends declared ($0.08 per share)
Exercise of long-term incentive plan stock options and employee

stock purchases

Purchase of treasury stock
Sendero divestiture
Tax benefits related to stock-based compensation
Pioneer Southwest merger transaction costs
Compensation costs:

Vested compensation awards, net
Compensation costs included in net income

Distributions to noncontrolling interests
Net income
Balance as of December 31, 2014
Dividends declared ($0.08 per share)
Employee stock purchases

Purchase of treasury stock
Tax benefits related to stock-based compensation
Compensation costs:

Vested compensation awards, net
Compensation costs included in net loss

Distributions to noncontrolling interests
Net loss
Balance as of December 31, 2015

Shares
Outstanding

(in thousands)
142,628
5,750
—

130
(178)
—
—
—

575
—
—
—
148,905
—
58
(201)
—

618
—
—
—
149,380

$

$

$

Equity Attributable to Common Stockholders

Common
Stock

Additional
Paid-in
Capital

Treasury
Stock

Retained
Earnings

Noncontrolling
Interests

Total
Equity

1
1
—

—
—
—
—
—

—
—
—
—
2
—
—
—
—

—
—
—
—
2

$

$

$

$

5,080
979
—

(144) $
—
—

$

1,665
—
(12)

6
—
—
19
(1)

—
84
—
—
6,167
—
3
—
7

—
90
—
—
6,267

$

$

7
(34)
—
—
—

—
—
—
—
(171) $
—
3
(31)
—

—
—
—
—
(199) $

—
—
—
—
—

—
—
—
930
2,583
(12)
—
—
—

—
—
—
(273)
2,298

$

$

13
—
—

—
—
(4)
—
—

—
—
(1)
—
8
—
—
—
—

—
—
(1)
—
7

$

$

$

6,615
980
(12)

13
(34)
(4)
19
(1)

—
84
(1)
930
8,589
(12)
6
(31)
7

—
90
(1)
(273)
8,375

 The accompanying notes are an integral part of these consolidated financial statements.

72

 
 
 
 
 
PIONEER NATURAL RESOURCES COMPANY

CONSOLIDATED STATEMENTS OF EQUITY (continued)
(in millions, except share data and dividends per share)

Balance as of December 31, 2015

Issuance of common stock

Dividends declared ($0.08 per share)

Exercise of long-term incentive plan stock options and employee

stock purchases

Purchases of treasury stock

Tax benefits related to stock-based compensation

Compensation costs:

Vested compensation awards, net

Compensation costs included in net loss

Net loss

Balance as of December 31, 2016

Equity Attributable to Common Stockholders

Common
Stock

Additional
Paid-in
Capital

Treasury
Stock

Retained
Earnings

Noncontrolling
Interests

Total
Equity

2

—

—

—

—

—

—

—

—

2

$

6,267

$

(199) $

2,298

$

2,534

—

1

—

1

—

89

—

—

—

6

(25)

—

—

—

—

—

(14)

—

—

—

—

—

(556)

$

8,892

$

(218) $

1,728

$

7

—

—

—

—

—

—

—

—

7

$

8,375

2,534

(14)

7

(25)

1

—

89

(556)

$

10,411

Shares
Outstanding

(in thousands)

149,380

$

19,838

—

98

(200)

—

608

—

—

169,724

$

The accompanying notes are an integral part of these consolidated financial statements.

73

 
 
 
 
 
 
 
PIONEER NATURAL RESOURCES COMPANY

CONSOLIDATED STATEMENTS OF CASH FLOWS
(in millions)

Cash flows from operating activities:

Net income (loss)
Adjustments to reconcile net income (loss) to net cash provided by operating
activities:

Year Ended December 31,
2015

2014

2016

$

(556) $

(273) $

930

Depletion, depreciation and amortization
Impairment of oil and gas properties
Impairment of inventory and other property and equipment
Exploration expenses, including dry holes
Deferred income taxes
Gain on disposition of assets, net
Accretion of discount on asset retirement obligations
Discontinued operations
Interest expense
Derivative related activity
Amortization of stock-based compensation
Other

Change in operating assets and liabilities

Accounts receivable
Income taxes receivable
Inventories
Derivatives
Investments
Other current assets
Accounts payable
Interest payable
Income taxes payable
Other current liabilities

Net cash provided by operating activities

Cash flows from investing activities:

Proceeds from disposition of assets, net of cash sold
Payments for acquisitions
Proceeds from investments
Purchase of investments
Additions to oil and gas properties
Additions to other assets and other property and equipment, net

Net cash used in investing activities

Cash flows from financing activities:

Borrowings of long-term debt
Principal payments on long-term debt
Proceeds from issuance of common stock, net of issuance costs
Distributions to noncontrolling interests
Exercise of long-term incentive plan stock options and employee stock purchases
Purchases of treasury stock
Tax benefits related to stock-based compensation
Payments of financing fees
Dividends paid

Net cash provided by financing activities

Net increase (decrease) in cash and cash equivalents
Cash and cash equivalents, beginning of period
Cash and cash equivalents, end of period

$

1,480
32
8
42
(379)
(2)
18
—
13
851
89
66

(134)
40
(32)
(24)
(22)
(7)
58
3
(2)
(44)
1,498

507
(428)
902
(2,741)
(1,857)
(203)
(3,820)

—
(455)
2,534
—
7
(25)
1
—
(13)
2,049
(273)
1,391
1,118

$

1,385
1,056
86
28
(178)
(782)
12
(4)
18
(3)
90
38

54
(20)
8
—
—
—
(258)
25
1
(35)
1,248

553
—
—
—
(2,110)
(283)
(1,840)

998
—
—
(1)
6
(31)
7
(9)
(12)
958
366
1,025
1,391

$

1,047
—
8
90
552
(9)
12
251
17
(609)
84
34

(29)
(18)
(37)
—
—
(2)
104
(22)
1
(38)
2,366

877
—
—
—
(3,243)
(333)
(2,699)

523
(523)
980
(1)
13
(34)
19
—
(12)
965
632
393
1,025

The accompanying notes are an integral part of these consolidated financial statements.

74

PIONEER NATURAL RESOURCES COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2016, 2015 and 2014

NOTE A.    Organization and Nature of Operations

Pioneer Natural Resources Company ("Pioneer" or the "Company") is a Delaware corporation whose common stock is 
listed and traded on the New York Stock Exchange. The Company is a large independent oil and gas exploration and production 
company that explores for, develops and produces oil, NGLs and gas within the United States, with operations primarily in the 
Permian Basin in West Texas, the Eagle Ford Shale play in South Texas, the Raton field in southeast Colorado and the West 
Panhandle field in the Texas Panhandle. 

NOTE B.    Summary of Significant Accounting Policies

Principles of consolidation. The consolidated financial statements include the accounts of the Company and its wholly-
owned and majority-owned subsidiaries since their acquisition or formation. All material intercompany balances and transactions 
have been eliminated.

Certain reclassifications have been made to the 2015 and 2014 financial statement and footnote amounts in order to conform 

them to the 2016 presentations. 

Use  of  estimates  in  the  preparation  of  financial  statements.  Preparation  of  the  accompanying  consolidated  financial 
statements in conformity with generally accepted accounting principles in the United States ("GAAP") 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 periods. 
Depletion of oil and gas properties and impairment of goodwill and proved and unproved oil and gas properties, in part, is determined 
using estimates of proved, probable and possible oil and gas reserves. There are numerous uncertainties inherent in the estimation 
of  quantities  of  proved,  probable  and  possible  reserves  and  in  the  projection  of  future  rates  of  production  and  the  timing  of 
development expenditures. Similarly, evaluations for impairment of proved and unproved oil and gas properties are subject to 
numerous uncertainties including, among others, estimates of future recoverable reserves and commodity price outlooks. Actual 
results could differ from the estimates and assumptions utilized.

Cash and cash equivalents. The Company's cash and cash equivalents include depository accounts held by banks and 

marketable securities with original issuance maturities of 90 days or less.

Investments. Periodically, the Company invests in commercial paper and corporate bonds with investment grade rated 
entities. The Company also periodically enters into time deposits with financial institutions. Commercial paper and time deposits 
are included in cash and cash equivalents if they have maturity dates that are less than 90 days at the date of purchase; otherwise, 
investments are reflected in short-term investments or long-term investments in the accompanying consolidated balance sheets 
based on their maturity dates. 

Accounts receivable. As of December 31, 2016 and 2015, the Company had accounts receivable – trade, net of allowances 
for bad debts, of $517 million and $384 million, respectively. The Company's accounts receivable – trade are primarily comprised 
of oil and gas sales receivables, joint interest receivables and other receivables for which the Company does not require collateral 
security.

As of both December 31, 2016 and 2015, the Company's allowances for doubtful accounts totaled $1 million. The Company 
establishes allowances for bad debts equal to the estimable portions of accounts receivable for which failure to collect is considered 
probable. The  Company  estimates  the  portions  of  joint  interest  receivables  for  which  failure  to  collect  is  probable  based  on 
percentages of joint interest receivables that are past due. The Company estimates the portions of other receivables for which 
failure to collect is probable based on the relevant facts and circumstances surrounding the receivable. Allowances for doubtful 
accounts are recorded as reductions to the carrying values of the receivables included in the Company's accompanying consolidated 
balance sheets and as charges to other expense in the accompanying consolidated statements of operations in the accounting periods 
during which failure to collect an estimable portion is determined to be probable. 

  Inventories. The Company's inventories consist of materials, supplies and commodities. The Company's materials and 
supplies inventory is primarily comprised of oil and gas drilling or repair items such as tubing, casing, proppant used to fracture-
stimulate oil and gas wells, chemicals, operating supplies and ordinary maintenance materials and parts. The materials and supplies 
inventory is primarily acquired for use in future drilling operations or repair operations and is carried at the lower of cost or market, 
on a first-in, first-out cost basis. Valuation allowances for materials and supplies inventories are recorded as reductions to the 
carrying values of the materials and supplies inventories in the Company's accompanying consolidated balance sheets and as 
charges to other expense in the accompanying consolidated statements of operations.  

75

PIONEER NATURAL RESOURCES COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2016, 2015 and 2014

Commodity inventories are carried at the lower of cost or market, on a first-in, first-out basis. The Company's commodity 
inventories consist of oil, natural gas liquids ("NGLs") and gas volumes held in storage or as linefill in pipelines. Any valuation 
allowances of commodity inventories are recorded as reductions to the carrying values of the commodity inventories included in 
the Company's accompanying consolidated balance sheets and as charges to other expense in the accompanying consolidated 
statements of operations.

The following table presents the Company's materials and supplies and commodity inventories as of December 31, 2016 

and 2015:

Materials and supplies (a)

Commodities

As of December 31,

2016

2015

(in millions)
144

$

37

181

$

132

23

155

$

$

____________________
(a)  As of December 31, 2016 and 2015, the Company's materials and supplies inventories were net of valuation allowances of 
$28 million and $78 million, respectively. See Note D for additional information regarding inventory impairments.

Oil and gas properties. The Company utilizes the successful efforts method of accounting for its oil and gas properties. 
Under  this  method,  all  costs  associated  with  productive  wells  and  nonproductive  development  wells  are  capitalized  while 
nonproductive exploration costs and geological and geophysical expenditures are expensed. The Company capitalizes interest on 
expenditures for significant development projects, generally when the underlying project is sanctioned, until such projects are 
ready for their intended use. 

The Company does not carry the costs of drilling an exploratory well as an asset in its consolidated balance sheets following 

the completion of drilling unless both of the following conditions are met:

(i)  The well has found a sufficient quantity of reserves to justify its completion as a producing well; and
(ii)  The Company is making sufficient progress assessing the reserves and the economic and operating viability of the 

project.

Due to the capital-intensive nature and the geographical location of certain projects, it may take an extended period of time 
to evaluate the future potential of an exploration project and the economics associated with making a determination on its commercial 
viability. In these instances, the project's feasibility is not contingent upon price improvements or advances in technology, but 
rather the Company's ongoing efforts and expenditures related to accurately predicting the hydrocarbon recoverability based on 
well information, gaining access to other companies' production data in the area, transportation or processing facilities and/or 
getting  partner  approval  to  drill  additional  appraisal  wells.  These  activities  are  ongoing  and  are  being  pursued  constantly. 
Consequently, the Company's assessment of suspended exploratory well costs is continuous until a decision can be made that the 
project  has  found  sufficient  proved  reserves  to  sanction  the  project  or  is  noncommercial  and  is  charged  to  exploration  and 
abandonments expense. See Note F for additional information regarding the Company's suspended exploratory well costs.

The Company owns interests in eight gas processing plants and nine treating facilities. The Company is the operator of one
of the gas processing plants and all nine of the treating facilities. Seven of the gas processing plants are operated by third parties 
and six of the treating facilities are not currently being used. The Company's ownership interests in the gas processing plants and 
treating facilities are primarily to accommodate handling the Company's gas production and thus are considered a component of 
the capital and operating costs of the respective fields that they service. To the extent that there is excess capacity at a plant or 
treating facility, the Company attempts to process third party gas volumes for a fee to keep the plant or treating facility at capacity. 
All revenues and expenses derived from third party gas volumes processed through the plants and treating facilities are reported 
as components of oil and gas production costs. Third party revenues generated from the processing plants and treating facilities 
in continuing operations for the years ended December 31, 2016, 2015 and 2014 were $41 million, $39 million and $56 million, 
respectively. Third party expenses attributable to the processing plants and treating facilities in continuing operations for the same 
respective periods were $24 million, $27 million and $24 million. The capitalized costs of the plants and treating facilities are 
included in proved oil and gas properties and are depleted using the unit-of-production method along with the other capitalized 
costs of the field that they service.

76

PIONEER NATURAL RESOURCES COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2016, 2015 and 2014

The capitalized costs of proved properties are depleted using the unit-of-production method based on proved reserves. Costs 
of significant nonproducing properties, wells in the process of being drilled and development projects are excluded from depletion 
until the related project is completed and proved reserves are established or, if unsuccessful, impairment is determined.

Proceeds from the sales of individual properties and the capitalized costs of individual properties sold or abandoned are 
credited and charged, respectively, to accumulated depletion, depreciation and amortization, if doing so does not materially impact 
the depletion rate of an amortization base. Generally, no gain or loss is recognized until an entire amortization base is sold. However, 
gain or loss is recognized from the sale of less than an entire amortization base if the disposition is significant enough to materially 
impact the depletion rate of the remaining properties in the amortization base.

The Company performs assessments of its long-lived assets to be held and used, including proved oil and gas properties 
accounted for under the successful efforts method of accounting, whenever events or circumstances indicate that the carrying value 
of those assets may not be recoverable. An impairment loss is indicated if the sum of the expected future cash flows, including 
vertical integrated services that are used in the development of the assets, is less than the carrying amount of the assets, including 
the carrying value of vertical integrated services assets. In these circumstances, the Company recognizes an impairment loss for 
the amount by which the carrying amount of the assets exceeds the estimated fair value of the assets. See Note D for additional 
information regarding the Company's impairment of proved oil and gas properties.

Unproved oil and gas properties are periodically assessed for impairment on a project-by-project basis. These impairment 
assessments are affected by the results of exploration activities, commodity price outlooks, planned future sales or expirations of 
all or a portion of such projects. If the estimated future net cash flows attributable to such projects are not expected to be sufficient 
to fully recover the costs invested in each project, the Company will recognize an impairment loss at that time. 

Goodwill. During 2004, the Company recorded goodwill associated with a business combination, which represents the cost 
of the acquired entity over the net amounts assigned to assets acquired and liabilities assumed. In accordance with GAAP, goodwill 
is not amortized to earnings, but is assessed for impairment whenever events or circumstances indicate that impairment of the 
carrying value of goodwill is likely, but no less often than annually. If the carrying value of goodwill is determined to be impaired, 
it is reduced to the impaired value with a corresponding charge to earnings in the period in which it is determined to be impaired. 
During the third quarter of 2016, the Company performed its annual qualitative assessment of goodwill to determine whether it 
was more likely than not that the fair value of the Company's reporting unit was less than its carrying amount as a basis for 
determining whether it was necessary to perform the two-step impairment test. Based on the results of the assessment, the Company 
determined it was not likely that the Company's goodwill was impaired.  

77

PIONEER NATURAL RESOURCES COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2016, 2015 and 2014

Other property and equipment, net. Other property and equipment is recorded at cost. As of December 31, 2016 and 2015, 

the net carrying value of other property and equipment consisted of the following:

Proved and unproved sand properties (b)

Land and buildings

Equipment and rigs (c)

Water infrastructure (d)

Vehicles

Furniture and fixtures

Information technology (e)

Leasehold improvements

As of December 31,

2016 (a)

2015 (a)

(in millions)
484

$

$

475

206

221

15

22

84

22

473

468

287

180

21

24

43

27

$

1,529

$

1,523

____________________
(a)  At December 31, 2016 and 2015, other property and equipment was net of accumulated depreciation of $866 million and 

(b) 

(c) 

(d) 
(e) 

$711 million, respectively.
Includes sand mines, facilities and unproved leaseholds that primarily provide the Company with proppant for use in the 
fracture stimulation of oil and gas wells.
Includes well servicing equipment and rigs and fracture stimulation equipment that are owned by wholly-owned subsidiaries 
that provide pressure pumping and well services on Company-operated properties. As of December 31, 2016, the Company 
owned eight fracture stimulation fleets and other oilfield services equipment, including pulling units, fracture stimulation 
tanks, water transport trucks, hot oilers, blowout preventers, construction equipment and fishing tools. 
Includes water supply wells and pipeline infrastructure costs.
Information technology costs include hardware and software costs associated with the Company's existing systems and in-
progress system upgrades.

 The primary purpose of the Company's sand mine, pressure pumping, well services and water infrastructure operations is 
to accommodate the Company's drilling, completion and production operations by increasing the availability of supplies, equipment 
and services, rather than being dependent on third-party availability, and to contain associated costs. All intercompany gains or 
losses of the Company's sand mine, pressure pumping, well services and water infrastructure operations are eliminated.

The capitalized costs of proved sand properties are depleted using the unit-of-production method based on proved sand 
reserves. Other property and equipment is depreciated over its estimated useful life on a straight-line basis. Buildings are generally 
depreciated over 20 to 39 years. Equipment and rigs, vehicles, and furniture and fixtures are generally depreciated over two to 15 
years. Water infrastructure is generally depreciated over 10 to 50 years. Leasehold improvements are amortized over the lesser of 
their estimated useful lives or the underlying terms of the associated leases.

The Company reviews its long-lived assets for impairment whenever events or changes in circumstances indicate that the 
carrying amount of an asset may not be recoverable. If such assets are considered to be impaired, the impairment to be recognized 
is measured by the amount by which the carrying amount of the asset exceeds its estimated fair value. The estimated fair value is 
determined using either a discounted future cash flow model or another appropriate fair value method.

 Asset retirement obligations. The Company records a liability for the fair value of an asset retirement obligation in the 
period in which it is incurred, if a reasonable estimate of fair value can be made. Asset retirement obligations are generally capitalized 
as part of the carrying value of the long-lived asset to which it relates. Conditional asset retirement obligations meet the definition 
of liabilities and are recognized when incurred if their fair values can be reasonably estimated.

The Company records the current and noncurrent portions of asset retirement obligations in other current liabilities and 
other liabilities, respectively, in the accompanying consolidated balance sheets and expenditures are classified as cash used in 
operating activities in the accompanying consolidated statements of cash flows. See Note I for additional information about the 
Company's asset retirement obligations.

78

PIONEER NATURAL RESOURCES COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2016, 2015 and 2014

Treasury stock. Treasury stock purchases are recorded at cost. Upon reissuance, the cost of treasury shares held is reduced 

by the average purchase price per share of the aggregate treasury shares held.

Issuance of common stock. In June 2016, January 2016 and November 2014, the Company issued 6.0 million, 13.8 million 
and 5.75 million shares of its common stock, respectively, and realized cash proceeds of $937 million, $1.6 billion and $980 
million, respectively, net of associated underwriting and offering expenses. 

Revenue recognition. The Company recognizes revenue when it is realized or realizable and earned. Revenues are considered 
realized or realizable and earned when: (i) persuasive evidence of an arrangement exists, (ii) delivery has occurred or services 
have been rendered, (iii) the seller's price to the buyer is fixed or determinable and (iv) collectability is reasonably assured.

The Company enters into purchase transactions with third parties and separate sale transactions with third parties to diversify 
a portion of the Company's West Texas Intermediate oil ("WTI") sales to a Gulf Coast market price and to satisfy unused pipeline 
capacity commitments. Revenues and expenses from these transactions are presented on a gross basis as the Company acts as a 
principal in the transaction by assuming the risk and rewards of ownership, including credit risk, of the commodities purchased 
and assuming the responsibility to deliver the commodities sold. Firm transportation payments on excess pipeline capacity are 
included in other expense in the accompanying consolidated statements of operations. See Note N for further information on 
transportation commitment charges. 

Derivatives. All derivatives are recorded in the accompanying consolidated balance sheets at estimated fair value. The 
Company recognizes all changes in the fair values of its derivative contracts as gains or losses in the earnings of the periods in 
which they occur.  

The Company classifies the fair value amounts of derivative assets and liabilities executed under master netting arrangements 
as net current or noncurrent derivative assets or net current or noncurrent derivative liabilities, whichever the case may be, by 
commodity and counterparty. Net derivative asset values are determined, in part, by utilization of the derivative counterparties' 
credit-adjusted risk-free rate curves and net derivative liabilities are determined, in part, by utilization of the Company's credit-
adjusted risk-free rate curve. The credit-adjusted risk-free rate curves for the Company and the counterparties are based on their 
independent market-quoted credit default swap rate curves plus the United States Treasury Bill yield curve as of the valuation 
date. See Note E for additional information about the Company's derivative instruments.

Income taxes. The Company recognizes the tax benefit from an uncertain tax position only if it is more likely than not that 
the tax position will be sustained upon examination by the taxing authorities, based upon the technical merits of the position. As 
of December 31, 2016, the Company had unrecognized tax benefits of $112 million resulting from research and experimental 
expenditures related to horizontal drilling and completion innovations. If all or a portion of the unrecognized tax benefit is sustained 
upon examination by the taxing authorities, the tax benefit will be recognized as a reduction to the Company's deferred tax liability 
and will affect the Company's effective tax rate in the period it is recognized. See Note O for additional information regarding 
uncertain tax positions.

Stock-based compensation. Stock-based compensation expense is being recognized on restricted stock, restricted stock 
units, performance units and stock option awards that are expected to be settled in the Company's common stock ("Equity Awards") 
in the Company's financial statements on a straight line basis over the awards' vesting periods based on their fair values on the 
dates of grant or modification, as applicable. Stock-based compensation awards generally vest over a period of three years. The 
amount of stock-based compensation expense recognized at any date is approximately equal to the ratable portion of the grant 
date value of the award that is vested at that date.

Stock-based compensation liability awards ("Liability Awards") are restricted stock awards that are expected to be settled 
in cash on their vesting dates, rather than in common stock. Liability Awards are recorded as accounts payable—affiliates based 
on the fair value of the vested portion of the awards on the balance sheet date. The fair values of Liability Awards are updated at 
each balance sheet date and changes in the fair values of the vested portions of the awards are recorded as increases or decreases 
to stock-based compensation expense.

 The Company utilizes (i) the Black-Scholes option pricing model to measure the fair value of stock options, (ii) the prior 
day's closing stock price on the date of grant to measure the fair value of Equity Awards and Liability Awards, (iii) the closing 
stock price on the balance sheet date to measure the fair value of the vested portions of Liability Awards and (iv) the Monte Carlo 
simulation method to measure the fair value of performance unit awards.

79

PIONEER NATURAL RESOURCES COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2016, 2015 and 2014

Segments. Operating segments are defined as components of an enterprise that (i) engage in activities from which it may 
earn revenues and incur expenses (ii) for which separate operational financial information is available and is regularly evaluated 
by the chief operating decision maker for the purpose of allocating resources and assessing performance.  

Based upon how the Company is organized and managed, the Company has only one reportable operating segment, which 
is oil and gas development, exploration and production. The Company considers its vertical integration services as ancillary to its 
oil and gas development, exploration and producing activities and manages these services to support such activities. In addition, 
the Company has a single, company-wide management team that allocates capital resources to maximize profitability and measures 
financial performance as a single enterprise.

Restructuring. In February 2016, the Company announced plans to restructure its pressure pumping operations in South 
Texas, including relocating its two Eagle Ford Shale pressure pumping fleets to the Spraberry/Wolfcamp area. In connection 
therewith, the Company offered severance to certain employees and relocated a number of other employees from its South Texas 
locations to its operations in the Permian Basin. The initiative was substantially complete as of December 31, 2016. In connection 
therewith, during the year ended December 31, 2016, the Company recognized $4 million of restructuring charges in other expense 
in the accompanying consolidated statements of operations. The restructuring costs included $3 million in cash employee severance 
costs and $1 million in employee relocation and other costs.

In May 2015, the Company announced plans to restructure its operations in Colorado, including closing its office in Denver, 
Colorado  and  eliminating  its  Trinidad-based  pressure  pumping  services  operations.  The  restructuring  plan  was  substantially 
complete as of December 31, 2015. In connection therewith, during the year ended December 31, 2015, the Company recognized 
$23 million of restructuring charges in other expense in the accompanying consolidated statements of operations. The restructuring 
costs included $17 million in employee severance costs and $6 million in office lease-related costs. The $17 million of employee 
severance costs for the year ended December 31, 2015 included $16 million related to cash severance payments and $1 million
related to accelerated vesting of share-based grants, which were noncash charges. 

Lease obligations and other. The $6 million of office lease-related costs for the year ended December 31, 2015 related to 
certain Denver office space that will no longer be used, of which $2 million represented the impairment of leasehold improvements 
and $4 million represented the Company's future obligations under the operating leases, net of anticipated sublease income. 

As of December 31, 2016 and 2015, the Company had $2 million and $4 million, respectively, of restructuring liabilities, 
primarily related to future lease obligations recorded in other current and noncurrent liabilities in the accompanying consolidated 
balance sheets.

New accounting pronouncements. In January 2017, the Financial Accounting Standards Board ("FASB") issued Accounting 
Standards Update ("ASU") 2017-04, "Simplifying the Test of Goodwill Impairment." ASU 2017-04 simplifies the quantitative 
goodwill impairment test requirements by eliminating the requirement to calculate the implied fair value of goodwill (Step 2 of 
the current goodwill impairment test). Instead, a company would record an impairment charge based on the excess of a reporting 
unit's carrying value over its fair value (measured in Step 1 of the current goodwill impairment test). This update is effective for 
fiscal years beginning after December 15, 2019, including interim periods within those fiscal years, and early adoption is permitted. 
Entities  will  apply  the  standard's  provisions  prospectively.  Based  on  the  Company's  qualitative  assessments  of  goodwill  for 
impairment during the third quarter and fourth quarter of 2016 and 2015, respectively, the Company does not believe this standard 
will have a material quantitative effect on the consolidated financial statements; however, this standard will change the policy 
under which the Company performs its annual impairment assessment by eliminating Step 2 of the test.

In June 2016, the FASB issued ASU 2016-13, "Measurement of Credit Losses on Financial Instruments." ASU 2016-13 
changes the impairment model for most financial assets and certain other instruments, including trade and other receivables, held-
to-maturity debt securities and loans, and requires entities to use a new forward-looking expected loss model that will result in the 
earlier recognition of allowances for losses. This update is effective for fiscal years beginning after December 15, 2019, including 
interim periods within those fiscal years. Early adoption is permitted for a fiscal year beginning after December 15, 2018, including 
interim periods within that fiscal year. Entities will apply the standard's provisions as a cumulative-effect adjustment to retained 
earnings as of the beginning of the first reporting period in which the guidance is adopted. The Company does not believe this 
standard will have a material impact on its consolidated financial statements.

In March 2016, the FASB issued ASU 2016-09, "Improvements to Employee Share-Based Payment Accounting." ASU 
2016-09 simplifies several aspects of the accounting for share-based payment transactions, including accounting for income taxes, 
forfeitures and statutory tax withholding requirements, as well as certain classification changes in the statement of cash flows. 

80

PIONEER NATURAL RESOURCES COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2016, 2015 and 2014

This update is effective for fiscal years beginning after December 15, 2016, including interim periods within that fiscal year. The 
Company does not believe this standard will have a material impact on its consolidated financial statements.

In February 2016, FASB issued ASU 2016-02, "Leases." ASU 2016-02 requires the recognition of lease assets and lease 
liabilities by lessees for those leases currently classified as operating leases and makes certain changes to the way lease expenses 
are accounted for. This update is effective for fiscal years beginning after December 15, 2018, including interim periods within 
that fiscal year. This update should be applied using a modified retrospective approach, and early adoption is permitted. The 
Company is evaluating the new guidance and has not determined the impact this standard may have on its consolidated financial 
statements.

In May 2014, the FASB issued ASU 2014-09, "Revenue from Contracts with Customers (Topic 606)," which supersedes 
the revenue recognition requirements in Accounting Standards Codification ("ASC") Topic 605, "Revenue Recognition," and most 
industry-specific guidance. ASU 2014-09 is based on the principle that revenue is recognized to depict the transfer of goods or 
services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those 
goods or services. ASU 2014-09 also requires additional disclosure about the nature, amount, timing and uncertainty of revenue 
and cash flows arising from customer contracts. In August 2015, the FASB issued ASU 2015-14, which defers the effective date 
of ASU 2014-09 for one year to annual reports beginning after December 15, 2017. Early adoption is permitted for fiscal years 
beginning after December 15, 2016. In May 2016, the FASB issued ASU 2016-11, which rescinds guidance from the SEC on 
accounting for gas balancing arrangements and will eliminate the use of the entitlements method. Entities have the option of using 
either a full retrospective or modified approach to adopt the new standards and the Company plans to utilize the modified approach 
to adopt the new standard upon its effective date. The Company is evaluating the new guidance, including identification of revenue 
streams and review of contracts and procedures currently in place. The Company does not anticipate this standard will have a 
material impact on its consolidated financial statements. 

NOTE C.   Acquisitions and Divestitures 

Acquisitions

Permian Basin. In August 2016, the Company acquired approximately 28,000 net acres in the Permian Basin, with net 
production of approximately 1,400 barrels of oil equivalent per day ("BOEPD"), from an unaffiliated third party for $428 million, 
including normal closing adjustments. The acquisition was accounted for using the acquisition method under ASC 805, "Business 
Combinations," which requires acquired assets and liabilities to be recorded at fair value as of the acquisition date.

The following table represents the preliminary allocation of the acquisition price to the assets acquired and the liabilities 

assumed based on their fair value at the acquisition date, pending final post-closing adjustments (in millions):

Assets acquired:

Proved properties

Unproved properties

Other property and equipment

Liabilities assumed:

Asset retirement obligations
Other liabilities
Net assets acquired

$

$

79

347

5

(2)
(1)
428

The fair value measurements of the net assets acquired are based on inputs that are not observable in the market and, 
therefore, represent Level 3 inputs in the fair value hierarchy (see Note D for a description of the input levels in the fair value 
hierarchy). The Company calculated the fair values of the acquired proved properties and asset retirement obligations using a 
discounted future cash flow model that utilizes management's estimates of (i) proved reserves, (ii) forecasted production rates, 
(iii) future operating, development and plugging and abandonment costs, (iv) future commodity prices and (v) a discount rate of 
10 percent for proved properties and seven percent for asset retirement obligations. The Company calculated the fair values of the 
acquired unproved properties based on the average price per acre in comparable market transactions.

81

PIONEER NATURAL RESOURCES COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2016, 2015 and 2014

In connection with the acquisition, the Company incurred acquisition related costs (primarily consulting, advisory and legal 
fees) of approximately $1 million. The operating results included in the Company's accompanying consolidated statements of 
operations from the date of acquisition to December 31, 2016, and the operating results that would have been recognized had the 
acquisition occurred on January 1, 2016, are not material to the Company's accompanying consolidated statements of operations.

Affiliated Partnerships. In December 2014, the Company acquired the remaining limited partner interests in five affiliated 
oil and gas drilling partnerships for $54 million and caused the partnerships to be merged with and into a wholly-owned subsidiary 
of the Company.

Divestitures Recorded in Continuing Operations

The Company recorded net gains on the disposition of assets in continuing operations of $2 million, $782 million and $9 
million during the years ended December 31, 2016, 2015 and 2014, respectively. The following describes the significant divestitures 
included in continuing operations:

•  EFS Midstream. In November 2014, the Company announced that it was pursuing the divestment of its 50.1 percent
equity  interest  in  EFS  Midstream  LLC  ("EFS  Midstream"),  which  was  accounted  for  under  the  equity  method  of 
accounting for investments in unconsolidated affiliates. In July 2015, the Company completed the sale of its interest 
in EFS Midstream to an unaffiliated third party, with the Company receiving total consideration of $1.0 billion, of 
which $530 million was received at closing, and the remaining $501 million was received in July 2016. Associated 
with the sale, the Company recorded a pretax gain of $777 million during 2015. 

•  Vertical drilling rigs. In March 2014, the Company completed the sale of its majority interest in Sendero Drilling 
Company, LLC ("Sendero") for cash proceeds of $31 million, which resulted in a gain of $1 million. As part of the 
sales agreement, the Company committed to lease from Sendero 12 vertical rigs through December 31, 2015 and eight
vertical rigs in 2016. During the years ended December 31, 2016, 2015 and 2014, the Company incurred $28 million, 
$40 million and $7 million, respectively, of idle drilling rig fees related to the leased Sendero rigs. See Note D and 
Note  N  for  additional  information  about  the  impairment  charges  and  idle  drilling  rig  fees,  respectively,  related  to 
Sendero.

•  Permian Basin. In February 2014, the Company completed the sale of proved and unproved properties in Gaines and 
Dawson counties in the Spraberry field in West Texas for cash proceeds of $72 million, which resulted in a gain of $2 
million.

•  Other. During 2016, 2015 and 2014, the Company sold other proved and unproved properties, inventory and other 

property and equipment and recorded net gains of $2 million, $5 million and $6 million, respectively.

Divestitures Recorded in Discontinued Operations

The Company has reflected the results of operations of its Hugoton assets, its Barnett Shale assets and Pioneer Alaska (prior 

to their sale) as discontinued operations in the accompanying consolidated statements of operations.

Hugoton. In September 2014, the Company completed the sale of its net assets in the Hugoton field in southwest Kansas 

for cash proceeds of $328 million.

Barnett Shale. In September 2014, the Company completed the sale of its Barnett Shale net assets for cash proceeds of $150 

million.

Alaska. In April 2014, the Company completed the sale of its 100 percent interest in the capital stock of Pioneer's Alaskan 

subsidiary ("Pioneer Alaska") for cash proceeds of $267 million. 

82

PIONEER NATURAL RESOURCES COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2016, 2015 and 2014

The following table represents the components of the Company's discontinued operations for the years ended December 

31, 2015 and 2014. The Company did not recognize any income or loss from discontinued operations in 2016.

Revenues and other income (a)
Costs and expenses (b)
Loss from discontinued operations before income taxes

Current tax provision
Deferred tax benefit

Loss from discontinued operations, net of tax

Year Ended December 31,

2015

2014

(in millions)

$

$

$

1
10
(9)
(1)
3
(7) $

238
409
(171)
—
60
(111)

 ____________________
(a) 

Revenues and other income for the year ended December 31, 2014 was primarily comprised of oil and gas revenues of $198 
million.

(b)  Costs and expenses during 2015 were primarily related to an arbitration award associated with plugging and abandonment 
obligations for two Gulf of Mexico wells from which Pioneer withdrew in 2009. The Company incurred noncash impairment 
charges of $305 million during the year ended December 31, 2014 on the Company's net assets in the Hugoton field, Barnett 
Shale field and Pioneer Alaska. Costs and expenses in 2014 also included oil and gas production costs of $60 million. See 
Note D for additional information regarding the noncash impairment charges related to the Hugoton assets, the Barnett 
Shale assets and Pioneer Alaska.

NOTE D.    Fair Value Measurements

Fair value is defined as the price that would be received to sell an asset or the price paid to transfer a liability in an orderly 
transaction between market participants at the measurement date. Fair value measurements are based upon inputs that market 
participants use in pricing an asset or liability, which are characterized according to a hierarchy that prioritizes those inputs based 
on the degree to which they are observable. Observable inputs represent market data obtained from independent sources, whereas 
unobservable inputs reflect a company's own market assumptions, which are used if observable inputs are not reasonably available 
without undue cost and effort. The three input levels of the fair value hierarchy are as follows:

•  Level 1 – quoted prices for identical assets or liabilities in active markets.
•  Level 2 – quoted prices for similar assets or liabilities in active markets; quoted prices for identical or similar assets or 
liabilities in markets that are not active; inputs other than quoted prices that are observable for the asset or liability (e.g. 
interest rates) and inputs derived principally from or corroborated by observable market data by correlation or other 
means.

•  Level 3 – unobservable inputs for the asset or liability.

Assets and liabilities measured at fair value on a recurring basis. The fair value input hierarchy level to which an asset 
or liability measurement in its entirety falls is determined based on the lowest level input that is significant to the measurement in 
its entirety.

83

 
 
 
PIONEER NATURAL RESOURCES COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2016, 2015 and 2014

The following tables present the Company's assets and liabilities that are measured at fair value on a recurring basis as of 

December 31, 2016 and 2015 for each of the fair value hierarchy levels:

Fair Value Measurements at December 31, 2016 Using

Quoted Prices in
Active Markets for
Identical Assets
(Level 1)

Significant Other
Observable
Inputs
(Level 2)

Significant
Unobservable
Inputs
(Level 3)

Fair Value at
December 31,
2016

Assets:

Commodity derivatives
Interest rate derivatives
Deferred compensation plan assets

Total assets

Liabilities:

Commodity derivatives

Total liabilities

Total recurring fair value measurements

$

$

(in millions)

$

8
6
—
14

84
84
(70) $

— $
—
83
83

—
—
83

$

— $
—
—
—

—
—
— $

8
6
83
97

84
84
13

Assets:

Commodity derivatives

Deferred compensation plan assets

Total assets

Liabilities:

Commodity derivatives

Total liabilities

Total recurring fair value measurements

Fair Value Measurements at December 31, 2015 Using

Quoted Prices in
Active Markets for
Identical Assets
(Level 1)

Significant Other
Observable
Inputs
(Level 2)

Significant
Unobservable
Inputs
(Level 3)

Fair Value at
December 31,
2015

(in millions)

$

$

— $

758

$

— $

73

73

—

—

73

—

758

1

1

—

—

—

—

$

757

$

— $

758

73

831

1

1

830

Commodity derivatives. The Company's commodity derivatives represent oil, NGL, gas and diesel swap contracts, collar 
contracts and collar contracts with short puts. The asset and liability measurements for the Company's commodity derivative 
contracts represented Level 2 inputs in the hierarchy. The Company utilizes discounted cash flow and option-pricing models for 
valuing its commodity derivatives.

The asset and liability values attributable to the Company's commodity derivatives were determined based on inputs that 
include (i) the contracted notional volumes, (ii) independent active market price quotes, (iii) the applicable estimated credit-adjusted 
risk-free rate yield curve and (iv) the implied rate of volatility inherent in the collar contracts and collar contracts with short puts, 
which is based on active and independent market-quoted volatility factors.

Deferred compensation plan assets. The Company's deferred compensation plan assets represent investments in equity and 
mutual fund securities that are actively traded on major exchanges. These investments are measured based on observable prices 
on major exchanges. As of December 31, 2016 and 2015, the significant inputs to these asset exchange values represented Level 
1 independent active exchange market price inputs. 

Interest rate derivatives. The Company's interest rate derivative assets as of December 31, 2016 represent interest rate swap 
contracts. As  of  December  31,  2015,  the  Company  had  no  interest  rate  derivative  assets  or  liabilities. The  Company  utilizes 
discounted cash flow models for valuing its interest rate derivatives. The derivative values attributable to the Company's interest 

84

 
 
 
 
 
 
 
PIONEER NATURAL RESOURCES COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2016, 2015 and 2014

rate derivative contracts are based on (i) the contracted notional amounts, (ii) forward active market-quoted London Interbank 
Offered Rates ("LIBOR") and (iii) the applicable credit-adjusted risk-free rate yield curve. The Company's interest rate derivative 
asset measurements represented Level 2 inputs in the hierarchy priority.

Assets and liabilities measured at fair value on a nonrecurring basis. Certain assets and liabilities are measured at fair 
value on a nonrecurring basis. These assets and liabilities are not measured at fair value on an ongoing basis, but are subject to 
fair value adjustments in certain circumstances. These assets and liabilities can include inventory, proved and unproved oil and 
gas properties and other long-lived assets that are written down to fair value when they are impaired or held for sale. See Note C 
for information on the fair value of assets and liabilities acquired in the Permian Basin acquisition.

Inventories. During the years ended December 31, 2016, 2015 and 2014, the Company recognized noncash impairment 
charges of $8 million, $71 million and $8 million, respectively, primarily to reduce the carrying value of its excess well pipe 
inventory. The Company calculated the estimated fair value of the inventory using significant Level 2 assumptions based on third-
party price quotes for the asset in an active market. The impairment charges are included in other expense in the Company's 
accompanying consolidated statements of operations.  

Proved  oil  and  gas  properties.  As  a  result  of  the  Company's  proved  property  impairment  assessments,  the  Company 
recognized pretax, noncash impairment charges to reduce the carrying values of (i) the West Panhandle field during the year ended 
December 31, 2016 and (ii) the Eagle Ford Shale field, the West Panhandle field and the South Texas - Other field during the year 
ended December 31, 2015.

The Company calculated the fair values of the West Panhandle field, the Eagle Ford Shale field and the South Texas - Other 
field proved properties using a discounted cash flow model. Significant Level 3 assumptions associated with the calculation of 
discounted future cash flows included management's longer-term commodity price outlooks ("Management's Price Outlooks") 
and management's outlooks for (i) production costs, (ii) capital expenditures, (iii) production and (iv) estimated proved reserves 
and risk-adjusted probable reserves. Management's Price Outlooks are developed based on third-party longer-term commodity 
futures price outlooks as of each measurement date. The expected future net cash flows were discounted using an annual rate of 
10 percent to determine fair value.  

The following table presents the fair value and fair value adjustments (in millions) for the Company's 2016 and 2015 proved 
property impairments, as well as the average oil price per barrel ("Bbl") and gas price per British thermal unit ("MMBtu") utilized 
in the respective Management's Price Outlooks:

West Panhandle

South Texas - Eagle Ford Shale

South Texas - Other

West Panhandle

March 2016

December 2015

September 2015

March 2015

$

$

$

$

Fair
Value

33

483

88

61

$

$

$

Fair Value Management's Price Outlooks
Adjustment
Oil
$

49.77

3.24

Gas

$

(32) $
(846) $
(72) $
(138) $

52.82

57.41

65.02

$

$

$

3.34

3.46

3.83

It is reasonably possible that the Company's estimate of undiscounted future net cash flows attributable to these or other 
properties may change in the future resulting in the need to impair their carrying values. The primary factors that may affect 
estimates of future cash flows are (i) future adjustments, both positive and negative, to proved and risk-adjusted probable and 
possible  oil  and  gas  reserves,  (ii) results  of  future  drilling  activities,  (iii) Management's  Price  Outlooks  and  (iv) increases  or 
decreases in production and capital costs associated with these reserves.

85

PIONEER NATURAL RESOURCES COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2016, 2015 and 2014

Assets associated with divestitures. Long-lived assets that are classified as held for sale are recorded at the lower of the 
asset's net carrying amount or estimated fair value less costs to sell. Pioneer Alaska and the Barnett Shale assets were classified 
as held for sale at December 31, 2013 and carried as such until their divestitures in April 2014 and September 2014, respectively. 
Beginning in the third quarter of 2014, the Hugoton assets were classified as held for sale until their divestiture in September 2014. 
During 2014, the fair value measurements of all assets classified as held for sale were based on their sales prices, less costs to sell. 
See Note C for additional information regarding the Company's divestitures.

The following table presents the fair value adjustments made by the Company during the year ended December 31, 2014 

related to assets associated with divestitures:

Hugoton field

Barnett Shale field

Pioneer Alaska

Classification

Discontinued operations

Discontinued operations

Discontinued operations

Year Ended December 31, 2014

Estimated Fair
Value Less
Costs to Sell

Fair Value
Adjustment

$

$

$

(in millions)
328

$

149

253

$

$

(34)
(174)
(97)

Unproved oil and gas properties. During March 2016, the Company recorded an impairment charge of $32 million to write-
off the carrying value of its unproved royalty acreage in Alaska (reported in exploration and abandonments in the accompanying 
consolidated statements of operations) as a result of the operator curtailing operations in the area and Management's Price Outlooks. 
During 2015 and 2014, the Company recorded impairment charges of $7 million and $50 million, respectively, to reduce the 
carrying value of unproved properties in southeast Colorado (reported in exploration and abandonments in the accompanying 
consolidated statements of operations). During 2015, the Company impaired the remaining carrying value of its unproved properties 
in southeast Colorado as a result of the Company no longer planning to develop this acreage and the acreage's limited market 
value, if any, given the short time period until the leases expire. At December 31, 2014, the Company calculated the estimated fair 
values of the unproved acreage in southeast Colorado using significant Level 3 assumptions based on average lease bonuses per 
acre for its prospective acreage. No value was allocated to acreage that the Company did not plan to develop in southeast Colorado.

 Financial instruments not carried at fair value. Carrying values and fair values of financial instruments that are not carried 

at fair value in the accompanying consolidated balance sheets as of December 31, 2016 and 2015 are as follows: 

Commercial paper, corporate bonds and time deposits
Current portion of long-term debt

Long-term debt

December 31, 2016

December 31, 2015

Carrying
Value

Fair
Value

Carrying
Value

Fair
Value

$
$

$

1,906
485

2,728

$
$

$

(in millions)

1,901
490

2,956

$
$

$

275
448

3,207

$
$

$

275
462

3,206

Commercial paper, corporate bonds and time deposits. Periodically, the Company invests in commercial paper and corporate 
bonds with investment grade rated entities. The Company also periodically enters into time deposits with financial institutions. 
The investments are carried at amortized cost and classified as held-to-maturity as the Company has the intent and ability to hold 
them until they mature. The net carrying value of held-to-maturity investments is adjusted for amortization of premiums and 
accretion of discounts to maturity over the life of the investments. Income related to these investments is recorded in interest and 
other income in the Company's consolidated statement of operations. The Company's investments in corporate bonds represent 
Level 1 inputs in the hierarchy, while the other investments represent Level 2 inputs in the hierarchy. Commercial paper and time 
deposits are included in cash and cash equivalents if they have maturity dates that are less than 90 days at the date of purchase; 
otherwise, investments are reflected in short-term investments or long-term investments in the accompanying consolidated balance 
sheets based on their maturity dates. The following table provides the components of the Company's cash and cash equivalents 
and investments as of December 31, 2016:

86

 
 
PIONEER NATURAL RESOURCES COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2016, 2015 and 2014

Consolidated Balance Sheet Location

Cash

Commercial
Paper

December 31, 2016

Corporate
Bonds

(in millions)

Time
Deposits

Total

Cash and cash equivalents

Short-term investments

Long-term investments

$

$

1,073

$

45

$

— $

— $

—

—

368

—

691

420

382

—

1,073

$

413

$

1,111

$

382

$

1,118

1,441

420

2,979

Debt obligations. Current and noncurrent long-term debt includes the Company's credit facility and the Company's senior 
notes. The fair value of the Company's debt obligations is determined utilizing inputs that are Level 2 measurements in the fair 
value  hierarchy.  The  fair  value  of  the  Company's  credit  facility  is  calculated  using  a  discounted  cash  flow  model  based  on 
(i) forecasted contractual interest and fee payments, (ii) forward active market-quoted United States Treasury Bill rates and (iii) the 
applicable credit-adjustments. The Company's senior notes represent debt securities that are not actively traded on major exchanges. 
The fair values of the Company's senior notes are based on their periodic values as quoted on the major exchanges.

The Company has other financial instruments consisting primarily of receivables, prepaid expenses, payables and other 
current assets and liabilities that approximate fair value due to the nature of the instrument and their relatively short maturities. 
Non-financial assets and liabilities initially measured at fair value include assets acquired and liabilities assumed in a business 
combination, goodwill and asset retirement obligations.

Concentrations of credit risk. As of December 31, 2016, the Company's primary concentration of credit risks are the risks 
associated with collecting receivables (principally accounts receivables) and the risk of a counterparty's failure to perform under 
derivative contracts owed to the Company. See Note L for information regarding the Company's major customers.

With respect to accounts receivables, the Company uses credit and other financial criteria to evaluate the credit standing of 
the entity obligated to make the payment, and where appropriate, the Company obtains assurances of payment, such as a guarantee 
by the parent company of the entity or such other credit support as the Company believes is appropriate.

The Company has entered into International Swap Dealers Association Master Agreements ("ISDA Agreements") with each 
of its derivative counterparties. The terms of the ISDA Agreements provide the Company and the counterparties with rights of set 
off upon the occurrence of defined acts of default by either the Company or a counterparty to a derivative, whereby the party not 
in default may set off all derivative liabilities owed to the defaulting party against all derivative asset receivables from the defaulting 
party. See Note E for additional information regarding the Company's derivative activities and information regarding derivative 
net assets and liabilities by counterparty. 

NOTE E.     Derivative Financial Instruments

The Company utilizes commodity swap contracts, collar contracts and collar contracts with short puts to (i) reduce the effect 
of price volatility on the commodities the Company produces and sells or consumes, (ii) support the Company's annual capital 
budgeting and expenditure plans and (iii) reduce commodity price risk associated with certain capital projects. The Company also, 
from time to time, utilizes interest rate contracts to reduce the effect of interest rate volatility on the Company's indebtedness.

Periodically, the Company may pay a premium to enter into commodity contracts. Premiums paid, if any, have been nominal 
in relation to the value of the underlying asset in the contract. The Company recognizes the nominal premium payments as an 
increase to the value of the derivative assets when paid. All derivatives are adjusted to fair value as of each balance sheet date.

87

PIONEER NATURAL RESOURCES COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2016, 2015 and 2014

Oil production derivative activities. All material physical sales contracts governing the Company's oil production are tied 
directly to, or are highly correlated with, New York Mercantile Exchange ("NYMEX") WTI oil prices. The Company uses derivative 
contracts to manage oil price volatility and basis swap contracts to reduce basis risk between NYMEX prices and actual index 
prices at which the oil is sold.

The following table sets forth the volumes per day associated with the Company's outstanding oil derivative contracts as 

of December 31, 2016 and the weighted average oil prices for those contracts:

Collar contracts:
Volume (Bbl)
Average price per Bbl:

Ceiling
Floor

Collar contracts with short puts (a):

Volume (Bbl)
Price per Bbl:

Ceiling
Floor
Short put

Rollfactor swap contracts (b):

Volume (Bbl)

NYMEX roll price
Basis swap contracts:

Midland-Cushing index swap volume (Bbl)

Price differential ($/Bbl) (c)

_______________

2017

Year Ending
December 31,

First
Quarter

Second
Quarter

Third
Quarter

Fourth
Quarter

2018

6,000

6,000

6,000

6,000

70.40
50.00

119,000

61.36
48.67
40.65

$
$

$
$
$

70.40
50.00

129,000

61.19
48.46
40.45

$
$

$
$
$

70.40
50.00

147,000

62.03
49.81
41.07

$
$

$
$
$

70.40
50.00

155,000

62.12
49.82
41.02

$
$

$
$
$

13,111

20,000

20,000

20,000

(0.32) $

(0.32) $

(0.32) $

(0.32) $

—

—
—

20,000

65.14
50.00
40.00

—

—

—

— $

—

— $

—

— $

3,000
(0.65) $

740
(0.65)

$
$

$
$
$

$

$

(a)   During the year ended December 31, 2016, the Company paid $24 million to convert 33,000 Bbls per day of 2017 collar 
contracts with short puts into new 2017 collar contracts with short puts with a ceiling price of $60.76 per Bbl, a floor 
price of $45.00 per Bbl and a short put price of $40.00 per Bbl. 

(b)  Represents swaps that fix the difference between (i) each day's price per Bbl of WTI for the first nearby month less (ii) 
the price per Bbl of WTI for the second nearby NYMEX month, multiplied by .6667; plus (iii) each day's price per Bbl 
of WTI for the first nearby month less (iv) the price per Bbl of WTI for the third nearby NYMEX month, multiplied 
by .3333. 

(c)  Represents the basis differential between Midland, Texas oil prices and WTI prices at Cushing, Oklahoma.

NGL production derivative activities. All material physical sales contracts governing the Company's NGL production are 
tied directly or indirectly to either Mont Belvieu, Texas or Conway, Kansas NGL component product prices. The Company uses 
derivative contracts to manage the NGL component product price volatility.

88

 
PIONEER NATURAL RESOURCES COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2016, 2015 and 2014

The following table sets forth the volumes per day associated with the Company's outstanding NGL derivative contracts as 

of December 31, 2016 and the weighted average NGL prices for those contracts:

Ethane collar contracts (a):

Volume (Bbl)
Price per Bbl:

Ceiling
Floor

Butane collar contracts with short puts (b):

Volume (Bbl)
Price per Bbl:

Ceiling
Floor
Short put

____________________

2017

First
Quarter

Second
Quarter

Third
Quarter

Fourth
Quarter

3,000

3,000

3,000

3,000

$
$

$
$
$

11.83
8.68

$
$

11.83
8.68

—

2,000

— $
— $
— $

36.12
29.25
23.40

$
$

$
$
$

11.83
8.68

2,000

36.12
29.25
23.40

$
$

$
$
$

11.83
8.68

—

—
—
—

(a)   Represent collar contracts that reduce the price volatility of ethane forecasted for sale by the Company at Mont Belvieu, 

Texas-posted prices. 

(b)  Represent collar contracts with short puts that reduce the price volatility of butane forecasted for sale by the Company 

at Mont Belvieu, Texas-posted prices.

  Subsequent to December 31, 2016, the Company entered into (i) 2,000 Bbls per day of butane swap contracts for April 
2017 through September 2017 with a fixed price of $34.86 per Bbl and (ii) 6,920 MMBtu per day of ethane basis swap contracts 
for March 2017 through December 2019 with a fixed price of $1.60 per MMBtu. The basis swaps fix the basis differential on a 
NYMEX Henry Hub ("HH") MMBtu equivalent basis. The Company will receive the HH price plus the price differential on 6,920
MMBtu per day, which is equivalent to 2,500 Bbls per day of ethane. 

Gas production derivative activities. All material physical sales contracts governing the Company's gas production are tied 
directly or indirectly to HH gas prices or regional index prices where the gas is sold. The Company uses derivative contracts to 
manage gas price volatility and basis swap contracts to reduce basis risk between HH prices and actual index prices at which the 
gas is sold.

89

PIONEER NATURAL RESOURCES COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2016, 2015 and 2014

The following table sets forth the volumes per day associated with the Company's outstanding gas derivative contracts as 

of December 31, 2016 and the weighted average gas prices for those contracts:

Collar contracts with short puts (a):

Volume (MMBtu)
Price per MMBtu:

Ceiling
Floor
Short put

Basis swap contracts:

Mid-Continent index swap volume (b)
Price differential ($/MMBtu)
Permian Basin index swap volume (c)
Price differential ($/MMBtu)

2017

Year Ending
December 31,

First
Quarter

Second
Quarter

Third
Quarter

Fourth
Quarter

2018

190,000

190,000

190,000

190,000

57,397

$
$
$

$

$

3.51
2.93
2.46

$
$
$

3.51
2.93
2.46

$
$
$

3.51
2.93
2.46

$
$
$

3.51
2.93
2.46

$
$
$

45,000

45,000

45,000

45,000

(0.32) $

40,000
0.37

$

(0.32) $
—
— $

(0.32) $
—
— $

(0.32) $
—
— $

3.51
2.85
2.33

—
—
—
—

____________________
(a)   Subsequent to December 31, 2016, the Company entered into additional gas collar contracts with short puts for 20,000
MMBtu per day of January 2018 through March 2018 production with a ceiling price of $4.20 per MMBtu, a floor price 
of $3.55 per MMBtu and a short put price of $2.85 per MMBtu.

(b)   Represents swaps that fix the basis differentials between the index prices at which the Company sells its Mid-Continent 

gas and the HH index price used in gas swap and collar contracts with short puts.

(c)   Represents swaps that fix the basis differentials between Permian Basin index prices and southern California index prices 

for Permian Basin gas forecasted for sale in southern California.

Marketing and basis derivative activities. Periodically, the Company enters into buy and sell marketing arrangements to 
fulfill firm pipeline transportation commitments. Associated with these marketing arrangements, the Company may enter into 
index swaps to mitigate price risk. As of December 31, 2016, the Company did not have any marketing derivatives outstanding.

Diesel derivative activities. Periodically, the Company enters into diesel derivative swap contracts to mitigate fuel price 
risk. The diesel derivative swap contracts are priced at an index that is highly correlated to the prices that the Company incurs to 
fuel its drilling rigs and fracture stimulation fleet equipment. During the fourth quarter of 2016, the Company terminated 2017 
diesel swap contracts for 1,000 Bbls per day for cash proceeds of $2 million. As of December 31, 2016, the Company does not 
have any diesel derivative contracts outstanding. 

Interest rate derivative activities. During the fourth quarter of 2016, the Company terminated interest rate derivative contracts 
on a notional amount of $150 million for cash proceeds of $7 million. As of December 31, 2016, the Company was party to interest 
rate derivative contracts whereby the Company will receive the three-month LIBOR rate for the 10-year period from December 
2017 through December 2027 in exchange for paying a fixed interest rate of 1.81 percent on a notional amount of $100 million
on December 15, 2017. 

Tabular disclosure of derivative financial instruments. All of the Company's derivatives are accounted for as non-hedge 
derivatives as of December 31, 2016 and December 31, 2015 and therefore all changes in the fair values of its derivative contracts 
are recognized as gains or losses in the earnings of the periods in which they occur. The Company classifies the fair value amounts 
of derivative assets and liabilities as net current or noncurrent derivative assets or net current or noncurrent derivative liabilities, 
whichever  the  case  may  be,  by  commodity  and  counterparty.  The  Company  enters  into  derivatives  under  master  netting 
arrangements,  which,  in  an  event  of  default,  allows  the  Company  to  offset  payables  to  and  receivables  from  the  defaulting 
counterparty. 

90

 
PIONEER NATURAL RESOURCES COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2016, 2015 and 2014

The aggregate fair value of the Company's derivative instruments reported in the accompanying consolidated balance sheets 
by type and counterparty, including the classification between current and noncurrent assets and liabilities, consists of the following:

Fair Value of Derivative Instruments as of December 31, 2016

Type

Consolidated             
Balance Sheet
Location

Fair
Value

Gross Amounts
Offset in the
Consolidated
Balance Sheet

Net Fair Value
Presented in the
Consolidated Balance
Sheet

(in millions)

Derivatives not designated as hedging instruments

Asset Derivatives:

Commodity price derivatives

Interest rate derivatives

Liability Derivatives:

Commodity price derivatives
Commodity price derivatives

Derivatives - current

Derivatives - current

Derivatives - current
Derivatives - noncurrent

$

$

$
$

33

6

102
7

$

$

$
$

(25) $
—

$

(25) $
—

$

8

6
14

77
7
84

Fair Value of Derivative Instruments as of December 31, 2015

Type

Consolidated             
Balance Sheet
Location

Fair
Value

Gross Amounts
Offset in the
Consolidated
Balance Sheet

Net Fair Value
Presented in the
Consolidated Balance
Sheet

(in millions)

Derivatives not designated as hedging instruments

Asset Derivatives:

Commodity price derivatives
Commodity price derivatives

Liability Derivatives:

Derivatives - current
Derivatives - noncurrent

Commodity price derivatives
Commodity price derivatives

Derivatives - current
Derivatives - noncurrent

$
$

$
$

695
64

1
1

$
$

$
$

(1) $
—

$

(1) $
—

$

694
64
758

—
1
1

The  following  table  details  the  location  of  gains  and  losses  recognized  on  the  Company's  derivative  contracts  in  the 

accompanying consolidated statements of operations:

Derivatives Not Designated as Hedging Instruments

Commodity price derivatives
Interest rate derivatives
Total

Location of Gain/(Loss)
Recognized in Earnings on 
Derivatives

Derivative gains (losses), net
Derivative gains (losses), net

Amount of Gain/(Loss) Recognized in
Earnings on Derivatives

Year Ended December 31,

2016

2015

2014

(in millions)
873
6
879

(174) $
13
(161) $

$

$

$

$

697
15
712

Derivative counterparties. The Company uses credit and other financial criteria to evaluate the credit standing of, and to 
select, counterparties to its derivative instruments. Although the Company does not obtain collateral or otherwise secure the fair 
value of its derivative instruments, associated credit risk is mitigated by the Company's credit risk policies and procedures.

91

 
 
 
 
 
 
 
 
PIONEER NATURAL RESOURCES COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2016, 2015 and 2014

The following table provides the Company's net derivative assets or liabilities by counterparty as of December 31, 2016:

JP Morgan Chase
Macquarie Bank
Societe Generale
BNP Paribas
Citibank, N.A.
J. Aron & Company
Toronto Dominion
Morgan Stanley
Nextera Energy
Merrill Lynch
Wells Fargo Bank, N.A.
Scotia Bank
Total

Net Assets (Liabilities)

(in millions)

(19)
(11)
(9)
(7)
(6)
(5)
(5)
(4)
(3)
(2)
(2)
3
(70)

$

$

NOTE F.    Exploratory Well Costs

The Company capitalizes exploratory well and project costs until a determination is made that the well or project has either 
found proved reserves, is impaired or is sold. The Company's capitalized exploratory well and project costs are presented in proved 
properties in the accompanying consolidated balance sheets. If the exploratory well or project is determined to be impaired, the 
impaired costs are charged to exploration and abandonments expense.

The following table reflects the Company's capitalized exploratory well and project activity during each of the years ended 

December 31, 2016, 2015 and 2014: 

Beginning capitalized exploratory well costs

Additions to exploratory well costs pending the determination of proved reserves
Reclassification due to determination of proved reserves
Divestitures
Impairment of properties
Exploratory well costs charged to exploration and abandonment expense

Ending capitalized exploratory well costs

Year Ended December 31,

2016

2015

2014

306
1,387
(1,369)
—
—
(1)
323

(in millions)
305
$
1,178
(1,160)
—
—
(17)
306

$

$

$

$

$

159
1,860
(1,628)
(47)
(13)
(26)
305

92

 
 
 
 
 
 
PIONEER NATURAL RESOURCES COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2016, 2015 and 2014

The following table provides an aging, as of December 31, 2016, 2015 and 2014 of capitalized exploratory costs and the 
number of projects for which exploratory well costs have been capitalized for a period greater than one year, based on the date 
drilling was completed:

Capitalized exploratory well costs that have been suspended:

One year or less
More than one year

Number of projects with exploratory well costs that have been suspended for a

period greater than one year

As of December 31,

2016

2015

2014

(in millions, except well counts)

$

$

$

$

318
5
323

3

$

$

303
3
306

1

305
—
305

—

The projects with exploratory well costs that have been suspended for a period greater than one year at December 31, 2016 
are in the Eagle Ford Shale area. The Company expects to complete one of the suspended wells during 2017 and the remaining 
two wells during 2018.

NOTE G.    Long-term Debt and Interest Expense

Long-term debt, including the effects of issuance costs and issuance discounts consisted of the following components at 

December 31, 2016 and 2015:

Outstanding debt principal balances:
5.875% senior notes due 2016 (a)
6.65% senior notes due 2017 (b)
6.875% senior notes due 2018
7.500% senior notes due 2020
3.45% senior notes due 2021
3.95% senior notes due 2022
4.45% senior notes due 2026
7.20% senior notes due 2028

Issuance costs and discounts
Long-term debt
Less current portion of long-term debt (a) (b)
Long-term debt

______________________________

December 31,

2016

2015

(in millions)

$

$

— $
485
450
450
500
600
500
250
3,235
(22)
3,213
485
2,728

$

455
485
450
450
500
600
500
250
3,690
(35)
3,655
448
3,207

(a)  The 5.875% senior notes, net of $7 million of unamortized issuance costs and issuance discounts, were classified as 

current in the accompanying consolidated balance sheet as of December 31, 2015. The notes were paid in full in July 
2016.

(b)  The 6.65% senior notes, net of $173 thousand of unamortized issuance costs and issuance discounts, are classified as 

current in the accompanying consolidated balance sheets as of December 31, 2016.

Credit facility. During August 2015, the Company entered into a Second Amendment to its Second Amended and Restated 
5-year Revolving Credit Agreement ("Credit Facility") with a syndicate of financial institutions, primarily to extend the maturity 
of the credit facility from December 2017 to August 2020, while maintaining aggregate loan commitments of $1.5 billion. The 
Company accounted for the entry into the Credit Facility as a modification of the prior agreement and capitalized the debt issuance 

93

 
 
 
 
 
 
 
 
PIONEER NATURAL RESOURCES COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2016, 2015 and 2014

costs along with those unamortized issuance costs that remained from the issuance of the prior agreement. As of December 31, 
2016, the Company had no outstanding borrowings under the Credit Facility. 

Borrowings under the Credit Facility may be in the form of revolving loans or swing line loans. Aggregate outstanding 
swing line loans may not exceed $150 million. Revolving loans under the Credit Facility bear interest, at the option of the Company, 
based on (a) a rate per annum equal to the higher of the prime rate announced from time to time by Wells Fargo Bank, National 
Association or the weighted average of the rates on overnight Federal funds transactions with members of the Federal Reserve 
System during the last preceding business day plus 0.5 percent plus a defined alternate base rate spread margin, which is currently 
0.5 percent based on the Company's debt rating or (b) a base Eurodollar rate, substantially equal to LIBOR, plus a margin (the 
"Applicable Margin"), which is currently 1.50 percent and is also determined by the Company's debt rating. Swing line loans under 
the Credit Facility bear interest at a rate per annum equal to the "ASK" rate for Federal funds periodically published by the Dow 
Jones Market Service plus the Applicable Margin. Letters of credit outstanding under the Credit Facility are subject to a per annum 
fee, representing the Applicable Margin plus 0.125 percent. The Company also pays commitment fees on undrawn amounts under 
the Credit Facility that are determined by the Company's debt rating (currently 0.20 percent). Borrowings under the Credit Facility 
are general unsecured obligations.

The Credit Facility requires the maintenance of a ratio of total debt to book capitalization, subject to certain adjustments, 

not to exceed .60 to 1.0. As of December 31, 2016, the Company was in compliance with all of its debt covenants.

Senior notes. During December 2015, the Company issued $500 million of 3.45% Senior Notes due 2021 and $500 million
of 4.45% Senior Notes due 2026 and received combined proceeds, net of $9 million of offering costs and discounts, of $991 
million. The Company's 5.875% senior notes (the "5.875% Senior Notes") matured and were repaid in July 2016. The Company 
funded the $455 million repayment of the 5.875% Senior Notes with cash on hand. The Company's 6.65% senior notes (the "6.65% 
Senior Notes"), with an outstanding debt principal balance of $485 million, will mature in March 2017. The Company intends to 
fund the payments due at maturity of the 6.65% Senior Notes with cash on hand. As such, the 6.65% Senior Notes are classified 
as current in the accompanying consolidated balance sheets.

The Company's senior notes are general unsecured obligations ranking equally in right of payment with all other senior 
unsecured indebtedness of the Company and are senior in right of payment to all existing and future subordinated indebtedness 
of the Company. The Company is a holding company that conducts all of its operations through subsidiaries; consequently, the 
senior notes are structurally subordinated to all obligations of its subsidiaries. Interest on the Company's senior notes is payable 
semiannually.

Principal maturities. Principal maturities of long-term debt at December 31, 2016, are as follows (in millions):

2017
2018
2019
2020
2021
Thereafter

$
$
$
$
$
$

485
450
—
450
500
1,350

94

 
PIONEER NATURAL RESOURCES COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2016, 2015 and 2014

Interest expense. The following amounts have been incurred and charged to interest expense for the years ended December 

31, 2016, 2015 and 2014:

Cash payments for interest
Amortization of issuance discounts
Amortization of capitalized loan fees
Net changes in accruals
Interest incurred
Less capitalized interest
Total interest expense

NOTE H.     Incentive Plans

Year Ended December 31,

2016

2015

2014

(in millions)
148
$
13
5
25
191
(4)
187

$

$

$

196
9
4
2
211
(4)
207

$

$

193
12
5
(22)
188
(4)
184

Deferred compensation retirement plan. In August 1997, the Compensation Committee of the Company's board of directors 
(the "Board") approved a deferred compensation retirement plan for the officers and certain key employees of the Company. Each 
officer and key employee is allowed to contribute up to 25 percent of their base salary and 100 percent of their annual bonus. The 
Company will provide a matching contribution of 100 percent of the officer's and key employee's contribution limited to the first 
ten percent of the officer's base salary and eight percent of the key employee's base salary. The Company's matching contribution 
vests immediately. A trust fund has been established by the Company to accumulate the contributions made under this retirement 
plan. The Company's matching contributions were $3 million for each of the years ended December 31, 2016, 2015 and 2014, 
respectively.

401(k)  plan. The  Pioneer  Natural  Resources  USA,  Inc.  ("Pioneer  USA,"  a  wholly-owned  subsidiary  of  the  Company)            

401(k)  and  Matching  Plan  (the  "401(k)  Plan")  is  a  defined  contribution  plan  established  under  the  Internal  Revenue  Code 
Section 401. All regular full-time and part-time employees of Pioneer USA are eligible to participate in the 401(k) Plan on the 
first day of the month following their date of hire. Participants may contribute an amount up to 80 percent of their annual salary 
into the 401(k) Plan. Matching contributions are made to the 401(k) Plan in cash by Pioneer USA in amounts equal to 200 percent
of a participant's contributions to the 401(k) Plan that are not in excess of five percent of the participant's base compensation (the 
"Matching Contribution"). Each participant's account is credited with the participant's contributions, Matching Contributions and 
allocations of the 401(k) Plan's earnings. Participants are fully vested in their account balances except for Matching Contributions 
and their proportionate share of 401(k) Plan earnings attributable to Matching Contributions, which proportionately vest over a 
four-year period that begins with the participant's date of hire. During the years ended December 31, 2016, 2015 and 2014, the 
Company recognized compensation expense of $23 million, $31 million and $33 million, respectively, as a result of Matching 
Contributions.

Stock-based compensation costs. In accordance with GAAP, the Company records stock-based compensation expense 
ratably over the vesting periods of the Company's stock-based compensation awards using the awards' fair value. The Company 
maintains two plans providing for stock-based compensation: the Amended and Restated 2006 Long-Term Incentive Plan ("LTIP") 
and the Employee Stock Purchase Plan ("ESPP"). 

Long-Term Incentive Plan. The LTIP provides for the granting of various forms of awards, including stock options, stock 
appreciation  rights,  performance  units,  restricted  stock  and  restricted  stock  units  to  directors,  officers  and  employees  of  the 
Company. The shares to be delivered under the LTIP shall be made available from (i) authorized but unissued shares, (ii) shares 
held as treasury stock or (iii) previously issued shares reacquired by the Company, including shares purchased on the open market.  
In May 2016, the stockholders of the Company approved a 3.5 million increase in the number of shares available under the plan. 
The following table shows the number of shares available for issuance pursuant to awards under the LTIP at December 31, 2016:

Approved and authorized awards
Awards issued under plan
Awards available for future grant

95

12,600,000
(7,509,349)
5,090,651

 
 
 
 
 
PIONEER NATURAL RESOURCES COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2016, 2015 and 2014

Employee Stock Purchase Plan. The ESPP allows eligible employees to annually purchase the Company's common stock 
at a discounted price. Officers of the Company are not eligible to participate in the ESPP. Contributions to the ESPP are limited 
to 15 percent of an employee's pay (subject to certain ESPP limits) during the eight-month offering period (January 1 to August 31). 
Participants in the ESPP purchase the Company's common stock at a price that is 15 percent below the closing sales price of the 
Company's common stock on either the first day or the last day of each offering period, whichever closing sales price is lower. 
The following table shows the number of shares available for issuance under the ESPP at December 31, 2016:

Approved and authorized shares
Shares issued
Shares available for future issuance

1,250,000
(891,746)
358,254

The following table reflects stock-based compensation expense recorded for each type of stock-based compensation award 

and the associated income tax benefit for the years ended December 31, 2016, 2015 and 2014:

Restricted stock-Equity Awards
Restricted stock-Liability Awards
Stock options (a)
Performance unit awards
ESPP
Total
Income tax benefit

Year Ended December 31,

2016

2015

2014

(in millions)
70
$
22
—
18
2
112
34

$
$

$

$
$

66
24
—
21
2
113
34

$

$
$

65
28
2
13
2
110
33

 _____________________
(a) 

Cash  proceeds  received  from  stock  option  exercises  during  2016  and  2014  amounted  to  $1  million  and  $6  million, 
respectively. There were no stock option exercises during 2015.

As of December 31, 2016, there was $107 million of unrecognized stock-based compensation expense related to unvested 
share-based compensation plans, including $29 million attributable to Liability Awards that are expected to be settled in cash on 
their vesting dates. The stock-based compensation expense will be recognized on a straight-line basis over the remaining vesting 
periods of the awards, which is a period of less than three years on a weighted average basis.

Restricted stock awards. During 2016, the Company awarded 701,363 restricted shares or units of the Company's common 
stock as compensation to directors, officers and employees of the Company (including 180,383 shares or units representing Liability 
Awards). The Company's issued shares, as reflected in the accompanying consolidated balance sheet as of December 31, 2016, do 
not include 96,242 of issued, but unvested shares awarded under stock-based compensation plans that have voting rights.

The following table reflects the restricted stock award activity for the year ended December 31, 2016:

Outstanding at beginning of year

Shares granted
Shares forfeited
Shares vested

Outstanding at end of year

Equity Awards

Liability Awards

Number of
Shares
$
1,081,650
520,980
$
(61,690) $
(463,713) $
$
1,077,227

Weighted
Average Grant-
Date Fair
Value

151.50
122.72
139.88
141.49
143.39

Number of Shares
271,031
180,383
(18,290)
(142,572)
290,552

96

 
 
 
 
 
 
 
PIONEER NATURAL RESOURCES COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2016, 2015 and 2014

The weighted average grant-date fair value of restricted stock equity awards awarded during 2016, 2015 and 2014 was 
$122.72, $153.55 and $184.39, respectively. The grant-date fair value of restricted stock equity awards that vested during 2016, 
2015 and 2014 was $66 million, $76 million and $51 million, respectively.

As of December 31, 2016 and 2015, accounts payable – due to affiliates in the accompanying consolidated balance sheets 
includes $22 million and $16 million, respectively, of liabilities attributable to the Liability Awards, representing the fair value of 
the earned, but unvested, portion of the outstanding awards as of that date. The cash paid for Liability Awards that vested during 
2016, 2015 and 2014 was $18 million, $29 million and $38 million, respectively.  

Stock option awards. Certain employees may be granted options to purchase shares of the Company's common stock with 
an exercise price equal to the fair market value of Pioneer common stock on the date of grant. The fair value of stock option awards 
is determined using the Black-Scholes option-pricing model. Option awards have a ten-year contract life. The expected life of an 
option  is  estimated  based  on  historical  and  expected  exercise  behavior. The  volatility  assumption  was  estimated  based  upon 
expectations of volatility over the life of the option as measured by historical volatility. The risk-free interest rate was based on 
the United States Treasury rate for a term commensurate with the expected life of the option. The dividend yield was based upon 
a seven-year average dividend yield. 

A summary of the Company's nonstatutory stock option awards activity for the year ended December 31, 2016 is presented 

below:

Outstanding at beginning of year

Options exercised

Outstanding at end of year

Exercisable at end of year

Number
of Shares

Weighted
Average
Exercise Price

199,058
$
(39,680) $
$
159,378

159,378

$

77.51
31.23
89.03

89.03

Weighted
Average
Remaining
Contractual
Life

(in years)

Aggregate
Intrinsic Value

(in millions)

4.29

4.29

$

$

15

15

The Company has not granted stock options since February 2012. The intrinsic value of options exercised during 2016 and 
2014 was $6 million and $12 million, respectively, based on the difference between the market price at the exercise date and the 
option exercise price. There were no options exercised during 2015.

Performance  unit  awards.  During  2016,  2015  and  2014,  the  Company  awarded  performance  units  to  certain  of  the 
Company's officers under the LTIP. The number of shares of common stock to be issued is determined by comparing the Company's 
total shareholder return to the total shareholder return of a predetermined group of peer companies over the performance period. 
The performance unit awards vest over a 34-month service period. The grant-date fair values per unit of the 2016, 2015 and 2014
performance unit awards were $203.69, $222.33 and $232.20, respectively, which amounts were determined using the Monte 
Carlo simulation method and are being recognized as stock-based compensation expense ratably over the performance period. The 
Monte Carlo simulation model utilizes multiple input variables that determine the probability of satisfying the market condition 
stipulated in the award grant and calculates the fair value of the award. Expected volatilities utilized in the model were estimated 
using a historical period consistent with the performance period of approximately three years. The risk-free interest rate was based 
on the United States Treasury rate for a term commensurate with the expected life of the grant. The Company used the following 
assumptions to estimate the fair value of performance unit awards granted during 2016, 2015 and 2014:

Risk-free interest rate

Range of volatilities

2016
0.96%
28.3%  - 53.6%

2015
1.03%
26.1%  - 41.3%

2014
0.62%
29.0%  - 41.5%

97

  
 
 
 
 
 
PIONEER NATURAL RESOURCES COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2016, 2015 and 2014

The following table summarizes the performance unit activity for the year ended December 31, 2016:

Beginning performance unit awards

Units granted
Units forfeited
Units vested (b)

Ending performance unit awards

Number of
Units (a)

Weighted  Average
Grant-Date
Fair Value

148,547
104,114

$
$
(4,821) $
(69,284) $
$
178,556

226.74
203.69
224.76
231.63
211.46

 _____________________
(a) 

These amounts reflect the number of performance units granted. The actual payout of shares may be between zero percent
and 250 percent of the performance units granted depending upon the total shareholder return ranking of the Company 
compared to peer companies at the vesting date.

(b)  Of the 69,284 units that vested during 2016, 65,255 units vested according to the scheduled timing of the associated award 
and  4,029  units,  which  were  originally  scheduled  to  vest  in  2017,  vested  upon  retirement  of  the  officer  to  whom  the 
performance unit awards were granted. On December 31, 2016, the service period lapsed on 65,996 performance unit awards 
that earned 1.75 shares for each vested award, representing 115,500 aggregate shares of common stock issued on January 3, 
2017. The vested performance units that earned 1.75 shares for each vested award included 65,255 units vested in the current 
year and 741 units that vested in 2015 upon the retirement of the officer to whom the performance unit awards were granted.  

 The grant-date fair value of performance units that vested during 2016, 2015 and 2014 was $15 million, $17 million and 

$8 million, respectively.

NOTE I.    Asset Retirement Obligations

The Company's asset retirement obligations primarily relate to the future plugging and abandonment of wells and related 
facilities.  Market  risk  premiums  associated  with  asset  retirement  obligations  are  estimated  to  represent  a  component  of  the 
Company's credit-adjusted risk-free rate that is utilized in the calculations of asset retirement obligations. The following table 
summarizes the Company's asset retirement obligation activity during the years ended December 31, 2016, 2015 and 2014:

Beginning asset retirement obligations
Obligations assumed in acquisitions
New wells placed on production
Changes in estimates (a)
Disposition of wells
Obligations settled
Accretion of discount on continuing operations

Ending asset retirement obligations

Year Ended December 31,

2016

2015

2014

(in millions)
189
$
—
4
103
—
(23)
12
285

$

$

$

285
2
2
17
—
(27)
18
297

$

$

194
6
5
7
(14)
(21)
12
189

 _____________________
(a) 

Changes in estimates are determined based on several factors, including abandonment cost estimates based on recent actual 
costs incurred to abandon wells, credit-adjusted risk-free discount rates and well life estimates. The increases in 2016 and 
2015 were primarily due to the forecasted timing of abandoning the Company's oil and gas wells being accelerated as a 
result of lower commodity prices, which has the effect of shortening the economic lives of the Company's producing wells. 

As of December 31, 2016 and 2015, the current portions of the Company's asset retirement obligations were $39 million

and $40 million, respectively. 

98

 
 
 
 
 
PIONEER NATURAL RESOURCES COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2016, 2015 and 2014

NOTE J.  Commitments and Contingencies

Severance agreements. The Company has entered into severance and change in control agreements with its officers and 
certain key employees. The current annual salaries for the officers and key employees covered under such agreements total $34 
million. 

Indemnifications. The Company has agreed to indemnify its directors and certain of its officers, employees and agents with 
respect to claims and damages arising from acts or omissions taken in such capacity, as well as with respect to certain litigation.

Legal actions. The Company is party to various proceedings and claims incidental to its business. While many of these 
matters involve inherent uncertainty, the Company believes that the amount of the liability, if any, ultimately incurred with respect 
to these proceedings and claims will not have a material adverse effect on the Company's consolidated financial position as a whole 
or on its liquidity, capital resources or future annual results of operations. The Company records reserves for contingencies when 
information available indicates that a loss is probable and the amount of the loss can be reasonably estimated. 

 Environmental. Environmental expenditures that relate to an existing condition caused by past operations and that have 
no future economic benefits are expensed. Environmental expenditures that extend the life of the related property or mitigate or 
prevent future environmental contamination are capitalized. Liabilities for expenditures that will not qualify for capitalization are 
recorded when environmental assessment and/or remediation is probable and the costs can be reasonably estimated. Such liabilities 
are undiscounted unless the timing of cash payments for the liability is fixed or reliably determinable. Environmental liabilities 
normally involve estimates that are subject to revision until settlement occurs.

Obligations following divestitures. In connection with its divestiture transactions, the Company usually retains certain 
liabilities and provides the purchaser certain indemnifications, subject to defined limitations, which may apply to identified pre-
closing matters, including matters of litigation, environmental contingencies, royalty obligations and income taxes. The Company 
does not believe that these obligations are probable of having a material impact on its liquidity, financial position or future results 
of operations.

Drilling commitments. The Company's principal drilling commitments are related to drilling rig contracts that require the 
Company to pay day rates for contracted drilling rigs over their contractual term. In addition, the Company periodically enters 
into contractual arrangements under which the Company is committed to expend funds to drill wells in the future. The Company 
recognizes its drilling commitments in the periods in which the rig services are performed. The Company's future minimum drilling 
commitments at December 31, 2016 include only drilling rig obligations that are expected to be paid as follows (in millions):

2017
2018
2019
2020
2021
Thereafter

$
$
$
$
$
$

107
82
10
—
—
—

Lease agreements. The Company leases equipment and office facilities under operating leases. Rent expense for the years 
ended December 31, 2016, 2015 and 2014 was $59 million, $58 million and $66 million, respectively. The payments for the year 
ended December 31, 2014 include $9 million associated with discontinued operations and are included in the loss from discontinued 
operations, net of tax, in the accompanying consolidated statements of operations. Future minimum lease commitments under 
noncancelable operating leases at December 31, 2016 are as follows (in millions):

2017
2018
2019
2020
2021
Thereafter

$
$
$
$
$
$

26
24
23
18
4
11

99

 
PIONEER NATURAL RESOURCES COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2016, 2015 and 2014

Firm purchase, gathering, processing, transportation and fractionation commitments. The Company from time to time 
enters into, and as of December 31, 2016 was a party to, take-or-pay agreements, which include contractual commitments to 
purchase  sand  and  water  for  use  in  the  Company's  drilling  operations  and  contractual  commitments  with  midstream  service 
companies and pipeline carriers for future gathering, processing, transportation and fractionation. These commitments are normal 
and  customary  for  the  Company's  business  activities.  Future  minimum  purchase,  gathering,  processing,  transportation  and 
fractionation commitments at December 31, 2016 are as follows (in millions):

2017
2018
2019
2020
2021
Thereafter

$
$
$
$
$
$

453
463
469
459
409
694

Certain future minimum gathering, processing, transportation and fractionation fees are based upon rates and tariffs that 
are subject to change over the lives of the commitments. The above commitments include demand fees associated with volume 
delivery commitments. If the Company does not expect to be able to fulfill its short-term and long-term delivery obligations from 
projected production of available reserves, the Company expects to purchase third party volumes, where applicable, to satisfy its 
commitment assuming it is economic to do so; otherwise, it will pay the demand fees associated with any commitment shortfalls.

NOTE K.     Related Party Transactions

Transactions with affiliated partnerships. Prior to December 2014, the Company, through a wholly-owned subsidiary, 
served as operator of properties in which it and its affiliated oil and gas drilling partnerships had an interest. The Company received 
lease operating and supervision charges in accordance with standard industry operating agreements related to the operation of the 
properties in which it and its affiliated partnerships had an interest and other fees related to the administration of the affiliated 
partnerships. For the year ended December 31, 2014, the Company received $3 million associated with these fees.

In December 2014, the Company acquired the remaining limited partner interests in the affiliated partnerships and caused 
the partnerships to be merged with and into the Company. Prior to the acquisition, the Company proportionately consolidated the 
affiliated partnerships. 

 Transactions  with  EFS  Midstream.  Prior  to  July  2015,  the  Company,  through  a  wholly-owned  subsidiary,  owned  a 
noncontrolling interest in its unconsolidated affiliate, EFS Midstream. In July 2015, the Company completed the sale of its interest 
in EFS Midstream to an unaffiliated third party.

Prior  to  its  sale  in  July  2015  and  for  the  year  ended  December  31,  2014,  the  Company  received  nil  and  $50  million, 

respectively, in distributions from EFS Midstream.

Prior to July 2015, the Company also (i) provided certain services as the manager of EFS Midstream in accordance with a 
Master Services Agreement and (ii) contracted for services from EFS Midstream under a Hydrocarbon Gathering and Handling 
Agreement (the "HGH Agreement").  

Master Services Agreement. The terms of the Master Services Agreement provided that the Company would perform certain 
manager  services  for  EFS  Midstream  and  be  compensated  by  monthly  fixed  payments  and  variable  payments  attributable  to 
expenses incurred by employees whose time was substantially dedicated to EFS Midstream's business. During 2015 and 2014, the 
Company received $2 million and $3 million of fixed payments and $9 million and $18 million of variable payments, respectively, 
from EFS Midstream.

Hydrocarbon Gathering and Handling Agreement. Under the terms of the HGH Agreement, EFS Midstream was obligated 
to construct certain equipment and facilities capable of gathering, treating and transporting oil and gas production from the Eagle 
Ford Shale properties operated by the Company. The HGH Agreement obligated the Company to use the EFS Midstream gathering, 
treating and transportation equipment and facilities. In accordance with the terms of the HGH Agreement, the Company paid EFS 
Midstream $54 million (prior to its sale) and $103 million of gathering and treating fees during 2015 and 2014, respectively. Such 
amounts were expensed as oil and gas production costs in the accompanying consolidated statements of operations.

100

 
PIONEER NATURAL RESOURCES COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2016, 2015 and 2014

NOTE L.     Major Customers 

The Company's share of oil and gas production is sold to various purchasers who must be prequalified under the Company's 
credit risk policies and procedures. The Company records allowances for doubtful accounts based on the age of accounts receivables 
and the financial condition of its purchasers and, depending on facts and circumstances, may require purchasers to provide collateral 
or otherwise secure their accounts. 

The following purchasers individually accounted for ten percent or more of the Company's consolidated oil, NGL and gas 
production revenues, including the revenues from discontinued operations, in at least one of the three years ended December 31, 
2016:

Vitol, Inc. (a)
Plains Marketing LP
Occidental Energy Marketing Inc.
Enterprise Products Partners L.P.

Year Ended December 31,

2016

2015

2014

19%
16%
16%
12%

18%
22%
18%
12%

9%
29%
16%
13%

______________________
(a)  Vitol Inc.'s Permian Basin oil systems were acquired by Sunoco Logistics Partners L.P. ("Sunoco") during the fourth quarter 

of 2016; the Company's contracts with Vitol Inc. have been transferred to Sunoco.

The loss of any of these significant purchasers could have a material adverse effect on the ability of the Company to sell 

its oil and gas production. 

The Company enters into purchase transactions with third parties and separate sale transactions with third parties to diversify 
a portion of the Company's WTI oil sales to a Gulf Coast market price and to satisfy unused pipeline capacity commitments. The 
following purchasers individually accounted for ten percent or more of the Company's consolidated oil, NGL and gas revenues 
from sales of commodities purchased from third parties in at least one of the three years ended December 31, 2016:

Occidental Energy Marketing Inc.
Plains Marketing LP
Exxon Mobil
BP Energy
Valero Marketing and Supply Company
Lonestar/Oneok

Year Ended December 31,
2015

2014

2016

19%
19%
16%
13%
12%
10%

18%
18%
9%
—%
37%
9%

—%
—%
—%
—%
61%
16%

The Company believes that the loss of any of these purchasers would not have an adverse effect on the ability of the Company 

to sell commodities it purchases from third parties.

101

 
 
 
 
PIONEER NATURAL RESOURCES COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2016, 2015 and 2014

NOTE M.     Interest and Other Income 

The following table provides the components of the Company's interest and other income during the years ended 

December 31, 2016, 2015 and 2014:

Interest income
Deferred compensation plan income
Equity interest in income of EFS Midstream (a)
Other income
Total interest and other income

Year Ended December 31,

2016

2015

2014

$

$

(in millions)
3
$
4
5
10
22

$

$

$

22
3
—
7
32

—
3
13
10
26

 ______________________
(a) 

The Company accounted for its investment in EFS Midstream prior to its sale in July 2015 using the equity method. EFS 
Midstream provided gathering, treating and transportation services for the Company. See Note C for additional information 
on the Company's sale of EFS Midstream.

NOTE N.    Other Expense

The following table provides the components of the Company's other expense during the years ended December 31, 2016, 

2015 and 2014:

Transportation commitment charges (a)
Idle drilling and well service equipment charges (b)
Loss from vertical integration services (c)
Impairment of inventory and other property and equipment (d)
Restructuring charges (e)
Other
Total other expense

Year Ended December 31,
2015

2014

2016

(in millions)
53
$
92
34
86
23
27
315

$

$

$

109
64
54
8
4
49
288

$

$

46
7
16
8
—
29
106

 ____________________
(a) 
(b) 

(c) 

Primarily represents firm transportation payments on excess pipeline capacity commitments.
Primarily represents expenses attributable to idle drilling rig fees that are not chargeable to joint operations and charges to 
terminate rig contracts that were not required to meet planned drilling activities. 
Loss from vertical integration services primarily represents net margins (attributable to third party working interest owners) 
that result from Company-provided fracture stimulation and well service operations, which are ancillary to and supportive 
of the Company's oil and gas joint operating activities, and do not represent intercompany transactions. For the three years 
ended December 31, 2016, 2015 and 2014, these net losses include $147 million, $298 million and $374 million of gross 
vertical integration revenues, respectively, and $201 million, $332 million and $390 million of total vertical integration 
costs and expenses, respectively.

(d)   Primarily represents charges of $8 million, $71 million and $8 million to reduce excess materials and supplies inventories 
to their market values for the years ended December 31, 2016, 2015 and 2014, respectively. See Note D for additional 
information on the fair value of material and supplies inventory.
Represents restructuring costs associated with the Company's restructuring of its operations in South Texas in 2016 and 
Colorado in 2015. See Note B for additional information on the restructuring charges.

(e) 

102

 
 
 
 
 
 
 
 
 
PIONEER NATURAL RESOURCES COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2016, 2015 and 2014

NOTE O.    Income Taxes

The Company and its eligible subsidiaries file a consolidated United States federal income tax return. Certain subsidiaries 
are not eligible to be included in the consolidated United States federal income tax return and separate provisions for income taxes 
have been determined for these entities or groups of entities. The tax returns and the amount of taxable income or loss are subject 
to examination by United States federal, state, local and foreign taxing authorities. The Company received a tax refund of $66 
million (net of tax payments) during 2016 and made current and estimated tax payments of $43 million and $22 million (net of 
tax refunds) during 2015 and 2014, respectively. 

The Company continually assesses both positive and negative evidence to determine whether it is more likely than not that 
deferred tax assets can be realized prior to their expiration. Pioneer monitors Company-specific, oil and gas industry and worldwide 
economic factors and assesses the likelihood that the Company's net operating loss carryforwards ("NOLs") and other deferred 
tax attributes in the United States federal, state, local and foreign tax jurisdictions will be utilized prior to their expiration.

The Company recognizes the tax benefit from an uncertain tax position only if it is more likely than not that the tax position 
will be sustained upon examination by the taxing authorities, based upon the technical merits of the position. As of December 31, 
2016, the Company had unrecognized tax benefits of $112 million resulting from research and experimental expenditures related 
to horizontal drilling and completion innovations. If all or a portion of the unrecognized tax benefit is sustained upon examination 
by the taxing authorities, the tax benefit will be recognized as a reduction to the Company's deferred tax liability and will affect 
the Company's effective tax rate in the period it is recognized. The Company expects to resolve the uncertainties associated with 
the unrecognized tax benefit by December 2017. There were no unrecognized tax benefits as of December 31, 2015. During 2014, 
the Company recognized a $21 million tax benefit resulting from the resolution of a tax uncertainty related to net operating loss 
carryovers and alternative minimum tax credits obtained from the 2012 acquisition of Premier Silica.

 With respect to income taxes, the Company's policy is to account for interest charges as interest expense and any penalties 
as other expense in the accompanying consolidated statements of operations. The Company files income tax returns in the United 
States federal jurisdiction, and various state and foreign jurisdictions. As of December 31, 2016, there are no proposed adjustments 
in any jurisdiction that would have a significant effect on the Company's future results of operations or financial position. The 
Company's earliest open years in its key jurisdictions are as follows:

U.S. federal
Various U.S. states
South Africa

2012
2012
2011

The Company's income tax (provision) benefit and amounts separately allocated were attributable to the following items 

for the years ended December 31, 2016, 2015 and 2014:

Income tax (provision) benefit from continuing operations
Income tax benefit from discontinued operations
Changes in equity:

Excess tax benefit related to stock-based compensation

Year Ended December 31,

2016

2015

2014

(in millions)
155
$
403
2
— $

1

$

7

$
$

$

(556)
60

19

$
$

$

103

 
 
 
 
 
PIONEER NATURAL RESOURCES COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2016, 2015 and 2014

The Company's income tax (provision) benefit attributable to income from continuing operations consisted of the following 

for the years ended December 31, 2016, 2015 and 2014:

Current:

U.S. federal
U.S. state

Deferred:

U.S. federal
U.S. state

Income tax (provision) benefit from continuing operations

Year Ended December 31,

2016

2015

2014

(in millions)

$

$

22
2
24

375
4
379
403

$

$

(22) $
(1)
(23)

165
13
178
155

$

(3)
(1)
(4)

(537)
(15)
(552)
(556)

 Reconciliations of the United States federal statutory tax rate to the Company's effective tax rate for income (loss) from 

continuing operations are as follows for the years ended December 31, 2016, 2015 and 2014:

Year Ended December 31,

2016

2015

2014

(in millions, except percentages)

$

(959)

$

(421)

$

1,597

35%
336
3
(3)

4

68
—
(5)
403

$

35%
147
8
—

—

—
—
—
155

$

35%

(559)
(10)
—

—

—
21
(8)
(556)

42%

37%

35%

Income (loss) from continuing operations attributable to common stockholders

before income taxes

Federal statutory income tax rate
(Provision) benefit for federal income taxes at the statutory rate
State income tax (provision) benefit (net of federal tax)
State valuation allowance (net of federal tax)
State credit for increasing research activities (net of unrecognized tax benefits and
federal tax)

Federal credit for increasing research activities (net of unrecognized tax benefits)

Premier Silica benefit
Other

Income tax (provision) benefit from continuing operations

$

Effective income tax rate, excluding net income attributable to the
noncontrolling interests

104

 
 
 
 
 
 
 
 
PIONEER NATURAL RESOURCES COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2016, 2015 and 2014

The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and deferred tax 

liabilities related to continuing operations are as follows as of December 31, 2016 and 2015:

Deferred tax assets:

Net operating loss carryforward (a)
Credit carryforwards (b)
Asset retirement obligations
Incentive plans
Net deferred hedge losses
Other

Total deferred tax assets

Deferred tax liabilities:

Oil and gas properties, principally due to differences in basis, depletion and the deduction of

intangible drilling costs for tax purposes

Other property and equipment, principally due to the deduction of bonus depreciation for tax

purposes

Net deferred hedge gains

Total deferred tax liabilities

Net deferred tax liability

December 31,

2016

2015

(in millions)

$

635
107
106
81
32
30
991

441
47
102
75
—
55
720

(2,184)

(1,997)

(204)
—
(2,388)
(1,397) $

(227)
(272)
(2,496)
(1,776)

$

$

____________________
(a)  Net operating loss carryforwards as of December 31, 2016 consist of $1.8 billion of U.S. federal NOLs, which expire 
between 2032 and 2036, and $150 million of Colorado NOLs, which expire between 2027 and 2036, and are net of a $4 
million valuation allowance relating to $92 million of Colorado NOLs that the Company believes will more likely than not 
expire unutilized.

(b)  Credit carryforwards as of December 31, 2016 consist of $26 million of U.S. federal minimum tax credits and $76 million 
of U.S. federal credits and $5 million of Texas credits for increasing research activities. The U.S. federal and state research 
credits exclude $112 million of unrecognized tax benefits.

NOTE P.    Net Income Per Share Attributable To Common Stockholders

In the calculation of basic net income (loss) per share attributable to common stockholders, participating securities are 
allocated earnings based on actual dividend distributions received plus a proportionate share of undistributed net income attributable 
to common stockholders, if any, after recognizing distributed earnings. The Company's participating securities do not participate 
in undistributed net losses because they are not contractually obligated to do so. The computation of diluted net income (loss) per 
share attributable to common stockholders reflects the potential dilution that could occur if securities or other contracts to issue 
common stock that are dilutive were exercised or converted into common stock or resulted in the issuance of common stock that 
would then share in the earnings of the Company. During periods in which the Company realizes a loss from continuing operations 
attributable to common stockholders, securities or other contracts to issue common stock would not be dilutive to net loss per 
share and conversion into common stock is assumed not to occur. Diluted net income (loss) per share is calculated under both the 
two-class method and the treasury stock method and the more dilutive of the two calculations is presented. 

The Company's basic net income (loss) per share attributable to common stockholders is computed as (i) net income (loss)
attributable to common stockholders, (ii) less participating share- and unit-based basic earnings (iii) divided by weighted average 
basic shares outstanding. The Company's diluted net income (loss) per share attributable to common stockholders is computed as 
(i) basic net income (loss) attributable to common stockholders, (ii) plus diluted adjustments to participating undistributed earnings 
(iii) divided by weighted average diluted shares outstanding.

105

 
 
 
 
 
PIONEER NATURAL RESOURCES COMPANY

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2016, 2015 and 2014

The following table is a reconciliation of the Company's net income (loss) attributable to common stockholders to basic 

and diluted net income (loss) attributable to common stockholders for the years ended December 31, 2016, 2015 and 2014:

Income (loss) from continuing operations

Participating basic earnings (a)

Basic and diluted net income (loss) from continuing operations

Basic and diluted net loss from discontinued operations

Basic and diluted net income (loss) attributable to common stockholders

Year Ended December 31,

2016

2015

2014

(in millions)

$

$

(556) $
—
(556)
—
(556) $

(266) $
—
(266)
(7)
(273) $

1,041
(10)
1,031
(111)
920

 ______________________
(a)  Unvested restricted stock awards represent participating securities because they participate in nonforfeitable dividends with 
the  common  equity  owners  of  the  Company.  Participating  share-  or  unit-based  earnings  represent  the  distributed  and 
undistributed earnings of the Company attributable to the participating securities. Unvested restricted stock awards do not 
participate in undistributed net losses as they are not contractually obligated to do so.

 Basic and diluted weighted average common shares outstanding were 166 million, 149 million and 144 million for the 

years ended December 31, 2016, 2015 and 2014, respectively.

106

 
 
 
PIONEER NATURAL RESOURCES COMPANY

UNAUDITED SUPPLEMENTARY INFORMATION
December 31, 2016, 2015 and 2014

Oil & Gas Exploration and Production Activities

The Company has only one reportable operating segment, which is oil and gas development, exploration and production 
in the United States. See the Company's accompanying consolidated statements of operations for information about results of 
operations for oil and gas producing activities.

Capitalized Costs 

Oil and gas properties:
Proved
Unproved

Capitalized costs for oil and gas properties

Less accumulated depletion, depreciation and amortization

Net capitalized costs for oil and gas properties

Costs Incurred for Oil and Gas Producing Activities (a)

Property acquisition costs:

Proved
Unproved

Exploration costs
Development costs
Total costs incurred

December 31,

2016

2015

(in millions)

$

$

18,566
486
19,052
(8,211)
10,841

$

$

16,631
169
16,800
(6,778)
10,022

Year Ended December 31,

2016

2015

(in millions)

2014

$

$

78
368
1,454
509
2,409

$

$

9
27
1,245
894
2,175

$

$

19
85
1,943
1,535
3,582

____________________
(a)   The costs incurred for oil and gas producing activities includes the following amounts related to asset retirement obligations:

Proved property acquisition costs
Exploration costs
Development costs
Total

 ____________________

Year Ended December 31,

2016 (a)

2015 (a)

(in millions)

2014

$

$

2
2
17
21

$

$

— $
2
100
102

$

—
3
4
7

(a) 

The increase in 2016 and 2015 from 2014 is primarily due to the forecasted timing of abandoning the Company's 
oil and gas wells being accelerated as a result of lower commodity prices, which has the effect of shortening the 
economic lives of the Company's producing wells.

Reserve Quantity Information

The estimates of the Company's proved reserves as of December 31, 2016, 2015 and 2014 were based on evaluations 
prepared  by  the  Company's  engineers  and  audited  by  independent  petroleum  engineers  with  respect  to  the  Company's  major 
properties  and  prepared  by  the  Company's  engineers  with  respect  to  all  other  properties.  Proved  reserves  were  estimated  in 
accordance with guidelines established by the United States Securities and Exchange Commission (the "SEC") and the FASB, 
which require that reserve estimates be prepared under existing economic and operating conditions based upon an average of the 
first-day-of-the-month commodity price during the 12-month period ending on the balance sheet date with no provision for price 
and cost escalations except by contractual arrangements.

107

 
 
 
 
 
 
 
 
 
 
 
PIONEER NATURAL RESOURCES COMPANY

UNAUDITED SUPPLEMENTARY INFORMATION
December 31, 2016, 2015 and 2014

Proved reserve quantity estimates are subject to numerous uncertainties inherent in the estimation of quantities of proved 
reserves and in the projection of future rates of production and the timing of development expenditures. The accuracy of such 
estimates is a function of the quality of available data and of engineering and geological interpretation and judgment. Results of 
subsequent drilling, testing and production may cause either upward or downward revision of previous estimates. Further, the 
volumes considered to be commercially recoverable fluctuate with changes in prices and operating costs. The Company emphasizes 
that proved reserve estimates are inherently imprecise and that estimates of new discoveries are more imprecise than those of 
currently producing oil and gas properties. Accordingly, these estimates are expected to change as additional information becomes 
available in the future.

108

PIONEER NATURAL RESOURCES COMPANY

UNAUDITED SUPPLEMENTARY INFORMATION
December 31, 2016, 2015 and 2014

The following table provides a rollforward of total proved reserves for the years ended December 31, 2016, 2015 and 2014. Oil and NGL volumes are expressed in thousands of 

Bbls ("MBbls"), gas volumes are expressed in millions of cubic feet ("MMcf") and total volumes are expressed in thousands of barrels of oil equivalent ("MBOE").

2016

Year Ended December 31,

2015

2014

Oil
(MBbls)

NGLs
(MBbls)

Gas
(MMcf) (a)

Total
(MBOE)

Oil
(MBbls)

NGLs
(MBbls)

Gas
(MMcf) (a)

Total
(MBOE)

Oil
(MBbls)

NGLs
(MBbls)

Gas
(MMcf) (a)

Total
(MBOE)

Balance, January 1

Production (b)

Revisions of previous estimates

Extensions and discoveries

Sales of minerals-in-place

Purchases of minerals-in-place

Balance, December 31

311,970

(48,926)

(3,912)

117,406

(908)

2,566

126,344

1,356,487

(15,922)

(139,510)

1,279

24,735

(238)

743

(76,998)

120,766

(1,377)

5,361

664,395

(88,100)

(15,466)

162,269

(1,376)

4,203

352,084

169,244

1,668,872

(38,452)

(82,816)

80,726

(16)

444

(14,086)

(54,439)

25,496

(3)

132

(147,173)

(309,947)

143,991

(15)

759

799,473

(77,067)

(188,913)

130,221

(21)

702

378,196

136,941

1,264,729

725,925

311,970

126,344

1,356,487

664,395

342,105

(32,718)

(46,354)

114,864

(26,952)

1,139

352,084

185,422

1,906,341

(15,761)

(20,125)

55,987

(154,424)

(2,574)

275,825

845,250

(74,217)

(66,907)

216,822

(36,926)

(359,548)

(126,803)

647

3,252

169,244

1,668,872

2,328

796,473

 ______________________
(a) 

The proved gas reserves as of December 31, 2016, 2015 and 2014 include 137,853 MMcf, 144,955 MMcf and 191,932 MMcf, respectively, of gas that the Company expected to 
be produced and utilized as field fuel. Field fuel is gas consumed to operate field equipment (primarily compressors) rather than being delivered to a sales point.
Production for 2016, 2015 and 2014 includes 15,082 MMcf, 15,531 MMcf and 16,738 MMcf of field fuel, respectively. Also, for 2014, production includes 4,911 MBOE of 
production associated with discontinued operations. See Note C for additional information regarding the Company's discontinued operations.

(b) 

109

 
 
 
 
PIONEER NATURAL RESOURCES COMPANY

UNAUDITED SUPPLEMENTARY INFORMATION
December 31, 2016, 2015 and 2014

Revisions  of  previous  estimates.  Revisions  of  previous  estimates  for  2016  were  comprised  of  58  million  barrels  of  oil 
equivalent ("MMBOE") of negative price revisions due to 15 percent and four percent declines in the NYMEX oil and gas prices, 
respectively, that were used to determine proved oil and gas reserves for 2016, as compared to 2015, partially offset by 43 MMBOE 
of positive revisions that were primarily attributable to reductions in cost estimates (based on cost savings achieved during 2016) 
that had the effect of extending the economic lives of the Company's producing wells. The December 31, 2016 NYMEX price 
used for oil and gas reserve preparation based upon SEC guidelines was $42.82 per barrel of oil and $2.48 per Mcf of gas, compared 
to $50.11 per barrel of oil and $2.59 per Mcf of gas at December 31, 2015.

Revisions of previous estimates for 2015 were comprised of 269 MMBOE of negative price revisions due to 47 percent 
and 40 percent declines in the NYMEX oil and gas prices, respectively, that were used to determine proved oil and gas reserves 
for 2015, as compared to 2014, partially offset by 80 MMBOE of positive revisions that were primarily attributable to reductions 
in cost estimates (based on cost savings achieved during 2015) that had the effect of extending the economic lives of the Company's 
producing wells. The December 31, 2015 NYMEX price used for oil and gas reserve preparation based upon SEC guidelines was 
$50.11 per barrel of oil and $2.59 per Mcf of gas, compared to $94.98 per barrel of oil and $4.35 per Mcf of gas at December 31, 
2014.

Revisions of previous estimates for 2014 were comprised of 79 MMBOE of negative revisions due to removing vertical 
proved undeveloped locations in the Spraberry/Wolfcamp play, replacing previously recorded undeveloped horizontal locations 
with new locations based on new well performance data, updated well performance profiles and updated cost estimates, partially 
offset by 12 MMBOE of positive price revisions. During 2014, the Company continued to shift its drilling activity in the Spraberry/
Wolfcamp play in the Midland Basin of West Texas from vertical drilling to horizontal drilling. The Company replaced vertical 
drilling with horizontal drilling because it believed that horizontal drilling would enhance ultimate resource recoveries and improve 
rates of return per dollar invested. As a result, Pioneer no longer expected to drill any vertical proved undeveloped locations. 
Consequently, the Company's proved undeveloped reserves were reduced by 39 MMBOE associated with vertical drilling locations 
in the Spraberry/Wolfcamp area. Based on the limited horizontal drilling conducted through year-end 2014 in six Wolfcamp and 
Spraberry shale intervals across Pioneer's acreage position in the Spraberry/Wolfcamp field, sufficient production and well control 
data was not yet available to support the replacement of the vertical proved undeveloped reserves removed in 2014 with horizontal 
proved undeveloped reserve additions. During 2014, the Company also removed 14 MMBOE of proved undeveloped reserves 
associated with horizontal locations in the Spraberry/Wolfcamp area that were no longer expected to be drilled within five years 
as a result of optimizing the Company's horizontal drilling program in other areas of the field. Negative well performance revisions 
of  19  MMBOE  were  comprised  of  a  combination  of  negative  revisions  associated  with  horizontal  and  vertical  downspacing 
performance and normal production decline changes. Cost inflation resulted in negative revisions of 6 MMBOE due to the assumed 
economic limit of producing and planned wells being shortened. The December 31, 2014 NYMEX price used for oil and gas 
reserve preparation based upon SEC guidelines was $94.98 per barrel of oil and $4.35 per Mcf of gas, compared to $96.82 per 
barrel of oil and $3.67 per Mcf of gas at December 31, 2013.

Extensions and discoveries. Extensions and discoveries for 2016 and 2015 were primarily comprised of proved reserve 
additions attributable to the Company's successful horizontal drilling program in the Spraberry/Wolfcamp area. Extensions and 
discoveries for 2014 were primarily comprised of proved reserve additions attributable to the Company's horizontal drilling program 
in the Spraberry/Wolfcamp area and its vertical drilling programs in the Strawn and Atoka horizons in the Midland Basin, combined 
with discoveries in the Eagle Ford Shale.   

Sales of minerals-in-place. Sales of minerals-in-place in 2014 were primarily related to the sale of the Hugoton field, the 
Barnett Shale field and Pioneer Alaska in 2014. See Note C for additional information regarding the Company's divestitures and 
discontinued operations.

Purchases of minerals-in-place. Purchases of minerals-in-place during 2016, 2015 and 2014 were primarily attributable to 

acquisitions in the Company's Spraberry/Wolfcamp area.

110

PIONEER NATURAL RESOURCES COMPANY

UNAUDITED SUPPLEMENTARY INFORMATION
December 31, 2016, 2015 and 2014

The  following  table  provides  the  Company's  proved  developed  and  proved  undeveloped  reserves  for  the  years  ended 

December 31, 2016, 2015 and 2014. 

Proved Developed Reserves:

December 31, 2016
December 31, 2015
December 31, 2014

Proved Undeveloped Reserves:

December 31, 2016
December 31, 2015
December 31, 2014

Oil
(MBbls)

NGLs
(MBbls)

Gas
(MMcf)

Total
(MBOE)

343,515
266,657
267,193

126,928
112,376
130,206

1,215,861
1,284,680
1,486,289

673,085
593,146
645,113

Oil
(MBbls)

NGLs
(MBbls)

Gas
(MMcf)

Total
(MBOE)

34,681
45,313
84,891

10,013
13,968
39,038

48,868
71,807
182,583

52,840
71,249
154,360

The following table summarizes the Company's proved undeveloped reserves activity during the year ended December 31, 

2016 (in MBOE).  

Beginning proved undeveloped reserves

Revisions of previous estimates
Extensions and discoveries
Transfers to proved developed

Ending proved undeveloped reserves

71,249
(3,673)
9,826
(24,562)
52,840

As of December 31, 2016, the Company had 90 proved undeveloped well locations as compared to 138 and 394 at December 
31, 2015 and 2014, respectively. The Company has no proved undeveloped well locations that are scheduled to be drilled more 
than five years from their original date of booking. 

The changes in proved undeveloped reserves during 2016 were comprised of the following items:

Revisions of previous estimates. Revisions of previous estimates were primarily comprised of 10 MMBOE of negative price 
revisions associated with proved undeveloped well locations that the Company no longer plans to drill as a result of the decline 
in commodity prices, partially offset by 6 MMBOE of positive revisions that were primarily attributable to reductions in cost 
estimates. 

Extensions and discoveries. Extensions and discoveries were primarily comprised of proved reserve additions attributable 

to the Company's successful horizontal drilling program in the Spraberry/Wolfcamp area.

Transfers to proved developed. Transfers to proved developed reserves represented those undeveloped proved reserves that 
moved to proved developed as a result of development drilling during 2016. During 2016, the Company incurred $509 million of 
development costs and developed 34 percent of its proved undeveloped reserves. 

The Company uses both public and proprietary geologic data to establish continuity of the formation and its producing 
properties. This included seismic data and interpretations (2-D, 3-D and micro seismic); open hole log information (both vertical 
and  horizontally  collected)  and  petrophysical  analysis  of  the  log  data;  mud  logs;  gas  sample  analysis;  drill  cutting  samples; 
measurements of total organic content; thermal maturity; sidewall cores and data measured from the Company's internal core 
analysis facility. After the geologic area was shown to be continuous, statistical analysis of existing producing wells was conducted 
to generate areas of reasonable certainty at distances from established production. As a result of this analysis, proved undeveloped 
reserves for drilling locations within these areas of reasonable certainty were recorded during 2016.

111

 
 
 
 
PIONEER NATURAL RESOURCES COMPANY

UNAUDITED SUPPLEMENTARY INFORMATION
December 31, 2016, 2015 and 2014

 While the Company expects, based on Management's Price Outlooks, that future operating cash flows will provide adequate 
funding for future development of its proved undeveloped reserves over the next five years, it may also use any combination of 
internally-generated cash flows, cash and cash equivalents on hand, sales of short-term and long-term investments, availability 
under its credit facility, proceeds from divestitures of nonstrategic assets or external financing sources to fund these and other 
capital expenditures, including exploratory drilling and acquisitions. The following table represents the estimated timing and cash 
flows of developing the Company's proved undeveloped reserves as of December 31, 2016 (dollars in millions):

Year Ended December 31, (a)
2017
2018
2019
2020
2021
Thereafter (b)

Estimated
Future
Production
(MBOE)

Future Cash
Inflows

Future
Production
Costs

Future
Development
Costs

Future Net
Cash Flows

2,388
5,048
6,472
4,642
3,469
30,820
52,839

$

$

72
150
195
139
104
930
1,590

$

$

12
28
35
25
20
261
381

$

$

144
241
107
22
1
5
520

$

$

(84)
(119)
53
92
83
664
689

______________________ 
(a) 

Production and cash flows represent the drilling results from the respective year plus the incremental effects of proved 
undeveloped drilling beginning in 2017.
The $5 million of future development costs represents net abandonment costs in years beyond the forecasted years.

(b) 

112

 
PIONEER NATURAL RESOURCES COMPANY

UNAUDITED SUPPLEMENTARY INFORMATION
December 31, 2016, 2015 and 2014

Standardized Measure of Discounted Future Net Cash Flows

The standardized measure of discounted future net cash flows is computed by applying commodity prices used in determining 
proved reserves (with consideration of price changes only to the extent provided by contractual arrangements) to the estimated 
future production of proved reserves less estimated future expenditures (based on year-end estimated costs) to be incurred in 
developing and producing the proved reserves, discounted using a rate of ten percent per year to reflect the estimated timing of 
the future cash flows. Future income taxes are calculated by comparing undiscounted future cash flows to the tax basis of oil and 
gas properties plus available carryforwards and credits and applying the current tax rates to the difference. The discounted future 
cash flow estimates do not include the effects of the Company's commodity derivative contracts. 

Discounted future cash flow estimates like those shown below are not intended to represent estimates of the fair value of 
oil and gas properties. Estimates of fair value should also consider probable and possible reserves, anticipated future commodity 
prices, interest rates, changes in development and production costs and risks associated with future production. Because of these 
and other considerations, any estimate of fair value is necessarily subjective and imprecise.

The following tables provide the standardized measure of discounted future cash flows as of December 31, 2016, 2015 and 

2014, as well as a rollforward in total for each respective year:

Oil and gas producing activities:

Future cash inflows
Future production costs
Future development costs (a)
Future income tax expense

10% annual discount factor

Standardized measure of discounted future cash flows

2016

December 31,

2015

(in millions)

2014

$

$

19,313
(10,462)
(1,189)
(55)
7,607
(3,417)
4,190

$

$

18,805
(11,475)
(1,622)
—
5,708
(2,464)
3,244

$

$

42,061
(18,228)
(4,285)
(4,874)
14,674
(6,889)
7,785

 __________________
(a) 

Includes $603 million, $604 million and $626 million of undiscounted future asset retirement expenditures estimated as of 
December 31, 2016, 2015 and 2014, respectively, using current estimates of future abandonment costs. See Note I for 
additional information regarding the Company's discounted asset retirement obligations.

113

 
 
 
PIONEER NATURAL RESOURCES COMPANY

UNAUDITED SUPPLEMENTARY INFORMATION
December 31, 2016, 2015 and 2014

Changes in Standardized Measure of Discounted Future Net Cash Flows 

Oil and gas sales, net of production costs
Revisions of previous estimates:

Net changes in prices and production costs
Changes in future development costs
Revisions in quantities
Accretion of discount
Changes in production rates, timing and other (a)

Extensions, discoveries and improved recovery
Development costs incurred during the period
Sales of minerals-in-place
Purchases of minerals-in-place
Change in present value of future net revenues
Net change in present value of future income taxes

Year Ended December 31,

2016

2015

(in millions)

2014

$

(1,700) $

(1,314) $

(2,813)

(284)
39
(122)
552
72
2,275
142
(12)
39
1,001
(55)
946
3,244
4,190

$

(7,960)
1,204
(1,292)
1,125
(93)
1,597
308
—
13
(6,412)
1,871
(4,541)
7,785
3,244

$

(1,570)
115
(581)
1,326
608
4,086
403
(1,123)
34
485
(1)
484
7,301
7,785

Balance, beginning of year
Balance, end of year

$

__________________
(a) 

The Company's changes in Standardized Measure attributable to production rates, timing and other primarily represent 
changes in the Company's estimates of when proved reserve quantities will be realized.

114

 
 
 
PIONEER NATURAL RESOURCES COMPANY

UNAUDITED SUPPLEMENTARY INFORMATION
December 31, 2016, 2015 and 2014

Selected Quarterly Financial Results

The following table provides selected quarterly financial results for the years ended December 31, 2016 and 2015, with 

adjustments to conform to the annual results: 

Year Ended December 31, 2016:
Oil and gas revenues
Total revenues and other income (a)
Total costs and expenses (b)
Net income (loss) attributable to common stockholders
Net income (loss) attributable to common stockholders per share:

Basic
Diluted

Year Ended December 31, 2015:
Oil and gas revenues
Total revenues and other income: (a)

As reported

Adjustment for vertical integration services (c)
As adjusted

Total costs and expenses:

As reported

Adjustment for vertical integration services (c)
As adjusted (b)

Net income (loss) attributable to common stockholders
Net income (loss) attributable to common stockholders per share:

Basic
Diluted

Quarter

First

Second

Third

Fourth

(in millions, except per share data)

$
$
$
$

$
$

$

$

$

$

$
$

$
$

$
409
$
685
$
1,093
(267) $

(1.65) $
(1.65) $

517

868
1
869

$

$

$

$

979
1
$
980
(78) $

$
613
$
786
$
1,197
(268) $

(1.63) $
(1.63) $

596

648
(4)
644

$

$

$

$

988
(4)
$
984
(218) $

(0.52) $
(0.52) $

(1.46) $
(1.46) $

643
1,186
1,242
22

0.13
0.13

557

2,218
19
2,237

1,215
19
1,234
646

4.28
4.27

$
$
$
$

$
$

$

$

$

$

$
$

$
$

753
1,168
1,253
(44)

(0.26)
(0.26)

508

1,074
—
1,074

2,047
—
2,047
(623)

(4.17)
(4.17)

 _____________________
(a) 

During 2016, the Company's total revenues and other income included net derivative gains of $43 million and $91 million during the 
first and third quarters, respectively, and net derivative losses of $229 million and $66 million during the second and fourth quarters, 
respectively. During 2015, the Company's total revenues and other income included net derivative gains of $241 million, $573 million 
and $262 million during the first, third and fourth quarters, respectively, and net derivative losses of $197 million during the second 
quarter. 
During the first quarter of 2016, the Company's total costs and expenses included charges of $32 million to impair the carrying value of 
proved properties in the West Panhandle field. During the first, third and fourth quarters of 2015, the Company's total costs and expenses 
included charges of $138 million to impair the carrying value of proved properties in the West Panhandle field, $72 million to impair the 
carrying value of proved properties in the South Texas - Other field and $846 million to impair the carrying value of proved properties 
in the South Texas - Eagle Ford Shale field, respectively. 
Vertical integration services represent net margins (attributable to third party working interest owners) that result from Company-provided 
fracture stimulation and well service operations, which are ancillary to and supportive of the Company's oil and gas joint operating 
activities, and do not represent intercompany transactions. These net margins have been reclassified from interest and other income to 
other expense on the accompanying statements of operations for all periods presented.

(b) 

(c) 

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. The Company's management, with the participation of its principal 
executive officer and principal financial officer, have evaluated, as required by Rule 13a-15(b) under the Securities Exchange Act 
of 1934 ("the Exchange Act"), the effectiveness of the Company's disclosure controls and procedures (as defined in Exchange Act 
Rule 13a-15(e)) as of the end of the period covered by this Report. Based on that evaluation, the principal executive officer and 
principal financial officer concluded that the Company's disclosure controls and procedures were effective, as of the end of the 
period covered by this Report, in ensuring that information required to be disclosed by the Company in the reports that it files or 
submits under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the SEC's 
rules and forms, including that such information is accumulated and communicated to the Company's management, including the 
principal executive officer and principal financial officer, to allow timely decisions regarding required disclosure.

Changes in internal control over financial reporting. There have been no changes in the Company's internal control over 
financial reporting (as defined in Rule 13a-15(f) under the Exchange Act) that occurred during the three months ended December 
31, 2016 that have materially affected, or are reasonably likely to materially affect, the Company's internal control over financial 
reporting.

MANAGEMENT'S REPORT ON INTERNAL CONTROL OVER FINANCIAL REPORTING

The management of the Company is responsible for establishing and maintaining adequate internal control over financial 
reporting.  The  Company's  internal  control  over  financial  reporting  is  a  process  designed  by  or  under  the  supervision  of  the 
Company's principal executive officer and principal financial officer and effected by the Board, management and other personnel 
to provide reasonable assurance regarding the reliability of financial reporting and the preparation of the Company's financial 
statements for external purposes in accordance with generally accepted accounting principles.

The Company's management, with the participation of its principal executive officer and principal financial officer assessed 
the effectiveness, as of December 31, 2016, of the Company's internal control over financial reporting based on the criteria for 
effective internal control over financial reporting established in "Internal Control — Integrated Framework (2013)," issued by the 
Committee of Sponsoring Organizations of the Treadway Commission. Based on the assessment, management determined that 
the Company maintained effective internal control over financial reporting at a reasonable assurance level as of December 31, 
2016, based on those criteria.

Ernst & Young LLP, the independent registered public accounting firm that audited the consolidated financial statements 
of the Company included in this Annual Report on Form 10-K, has issued an attestation report on the effectiveness of the Company's 
internal control over financial reporting as of December 31, 2016. The report, which expresses an unqualified opinion on the 
effectiveness of the Company's internal control over financial reporting as of December 31, 2016, is included in this Item under 
the heading "Report of Independent Registered Public Accounting Firm."

116

 
REPORT OF INDEPENDENT REGISTERED PUBLIC
ACCOUNTING FIRM

The Board of Directors and Stockholders of
Pioneer Natural Resources Company

We have audited Pioneer Natural Resources Company's (the "Company") internal control over financial reporting as of 
December  31,  2016,  based  on  criteria  established  in  Internal  Control—Integrated  Framework  issued  by  the  Committee  of 
Sponsoring  Organizations  of  the  Treadway  Commission  (2013  framework)  (the  COSO  criteria).  Pioneer  Natural  Resources 
Company's management is responsible for maintaining effective internal control over financial reporting, and for its assessment 
of the effectiveness of internal control over financial reporting included in the accompanying Management's Report on Internal 
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 to provide reasonable assurance regarding the 
reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally 
accepted accounting principles. A company's internal control over financial reporting includes those policies and procedures that 
(1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions 
of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation 
of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the 
company are being made only in accordance with authorizations of management and directors of the company; and (3) provide 
reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company's 
assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, 
projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because 
of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

In our opinion, Pioneer Natural Resources Company maintained, in all material respects, effective internal control over 

financial reporting as of December 31, 2016, based on the COSO criteria.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), 
the  consolidated  balance  sheets  of  Pioneer  Natural  Resources  Company  as  of  December  31,  2016  and  2015  and  the  related 
consolidated statements of operations, equity and cash flows for each of the three years in the period ended December 31, 2016, 
and our report dated February 17, 2017 expressed an unqualified opinion thereon.

/s/ Ernst & Young LLP

Dallas, Texas
February 17, 2017 

117

ITEM 9B. OTHER INFORMATION

None.

PART III

ITEM 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE

The names of the executive officers of the Company and their ages, titles and biographies as of the date hereof are incorporated 
by reference from Part I of this Report. The other information required in response to this Item will be set forth in the Company's 
definitive proxy statement for the annual meeting of stockholders to be held during May 2017 and is incorporated herein by 
reference. 

ITEM 11.

EXECUTIVE COMPENSATION

The information required in response to this Item will be set forth in the Company's definitive proxy statement for the 

annual meeting of stockholders to be held during May 2017 and is incorporated herein by reference.

ITEM 12.

SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND
RELATED STOCKHOLDER MATTERS

Securities Authorized for Issuance under Equity Compensation Plans

The following table summarizes information about the Company's equity compensation plans as of December 31, 2016:

Equity compensation plans approved by security holders:

Pioneer Natural Resources Company:

2006 Long-Term Incentive Plan (b)(c)
Employee Stock Purchase Plan (d)

Total:

Number of securities 
to be issued upon 
exercise of
outstanding options,
warrants and rights 
(a)

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 
first column)

159,378
—
159,378

$

$

89.03
—
89.03

5,090,651
358,254
5,448,905

 _______________________
(a) 
(b) 

There are no outstanding warrants or equity rights awarded under the Company's equity compensation plans.  
In May 2006, the stockholders of the Company approved the 2006 Long-Term Incentive Plan, which provided for the 
issuance of up to 9.1 million awards, as was supplementally approved by the stockholders of the Company during May 
2009. In May 2016, the stockholders of the Company approved a 3.5 million increase in the number of shares available 
under the plan. Awards under the 2006 Long-Term Incentive Plan can be in the form of stock options, stock appreciation 
rights, performance units, restricted stock and restricted stock units. No additional awards may be made under the prior 
Long-Term Incentive Plan. 
The number of securities remaining for future issuance has been reduced by the maximum number of shares that could be 
issued pursuant to outstanding grants of performance units at December 31, 2016.
The number of remaining securities available for future issuance under the Company's Employee Stock Purchase Plan is 
based on the original authorized issuance of 750,000 shares plus an additional 500,000 shares supplementally approved 
less 891,746 cumulative shares issued through December 31, 2016. 

(c) 

(d) 

See Note H of Notes to Consolidated Financial Statements included in "Item 8. Financial Statements and Supplementary 

Data" for a description of each of the Company's equity compensation plans.

The remaining information required in response to this Item will be set forth in the Company's definitive proxy statement 

for the annual meeting of stockholders to be held during May 2017 and is incorporated herein by reference.

118

 
 
ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE

The information required in response to this Item will be set forth in the Company's definitive proxy statement for the 

annual meeting of stockholders to be held during May 2017 and is incorporated herein by reference. 

ITEM 14.

PRINCIPAL ACCOUNTING FEES AND SERVICES

The information required in response to this Item will be set forth in the Company's definitive proxy statement for the 

annual meeting of stockholders to be held during May 2017 and is incorporated herein by reference.

PART IV

ITEM 15.

EXHIBITS, FINANCIAL STATEMENT SCHEDULES

(a)  Listing of Financial Statements

Financial Statements

The  following  consolidated  financial  statements  of  the  Company  are  included  in  "Item  8.  Financial  Statements  and 

Supplementary Data:"

•  Report of Independent Registered Pubic Accounting Firm
•  Consolidated Balance Sheets as of December 31, 2016 and 2015 
•  Consolidated Statements of Operations for the Years Ended December 31, 2016, 2015 and 2014 
•  Consolidated Statements of Equity for the Years Ended December 31, 2016, 2015 and 2014 
•  Consolidated Statements of Cash Flows for the Years Ended December 31, 2016, 2015 and 2014 
•  Notes to Consolidated Financial Statements
•  Unaudited Supplementary Information

(b)  Exhibits

The exhibits to this Report that are required to be filed pursuant to Item 15(b) are included in the Company's Form 10-K 

filed with the SEC on February 17, 2017.

(c) 

Financial Statement Schedules

No financial statement schedules are required to be filed as part of this Report or they are inapplicable.

ITEM 16.

10-K SUMMARY

None.

119

 
 
S H A R E H O L D E R   I N F O R M AT I O N

STOCK EXCHANGE LISTING – COMMON STOCK

INFORMATION REQUESTS

New York Stock Exchange: PXD

To receive additional copies of the Annual Report on Form 

10-K as filed with the SEC or to obtain other Pioneer 

CORPORATE INFORMATION

Pioneer Natural Resources Company

5205 N. O’Connor Blvd., Suite 200

Irving, TX 75039

(972) 444-9001

pxd.com

STOCK TRANSFER AGENT AND REGISTRAR

Communication concerning the transfer or exchange of 

shares, dividend payments, lost certificates or change of 

address should be directed to:

Continental Stock Transfer & Trust Company

17 Battery Place, 8th Floor

New York, NY 10004

(888) 509-5586

continentalstock.com 

pioneer@continentalstock.com

ANNUAL MEETING

The Annual Meeting of stockholders will be held at 5205

N. O’Connor Blvd., Suite 250, Irving, Texas 75039, on

Thursday, May 18, 2017, at 9:00 a.m. Central Time.

publications, please contact:

Pioneer Natural Resources Company

Attn: Investor Relations

5205 N. O’Connor Blvd., Suite 200

Irving, TX 75039

(972) 969-3583

ir@pxd.com

INVESTOR RELATIONS AND MEDIA CONTACTS

Shareholders, portfolio managers, brokers and securities 

analysts seeking information concerning Pioneer’s 

operations or financial results are encouraged to contact

Frank Hopkins, Senior Vice President, Investor Relations, at 

(972) 969-4065. Media inquiries should be directed to Tadd

Owens, Vice President, Communications and Government 

Relations, at (972) 969-5760.

NYSE: PXD | PXD.COM

5205 N. O’Connor Blvd., Suite 200 
Irving, TX 75039 | (972) 444-9001