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Pioneer Natural Resources Company

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FY2017 Annual Report · Pioneer Natural Resources Company
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STRENGTH   
IN  NUMBERS

2017 10-K AND ANNUAL REPORT

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

The information included in this Stock Performance section of the 2017 Annual Report, is not a part of Pioneer’s 

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COOOCOOMPPPMPPARARARARARISISSSONONONONON OOOOOFFFFF FIFIIVEVEV -Y-YYYYEEEAEAE R RRRR CUCUMUMUMUMUMULALALALALATITTTT VEVE TTTTTOTOTOTOTOTALALALALAL RRRRRETETTTTURURURURURNNNNN
Among Pioneer, the S&P 500 Index and the S&P O&G E&P Index (a)

$250

$200

$150

$100

$50

2012

2013

2014

2015

2016

2017

Year ended December 31,

 2012 

2013 

2014 

2015 

2016 

2017 

Pioneer

$  100.00 

$ 

172.78 

$ 

139.78 

$ 

117.81 

$ 

169.28 

$ 

162.57 

S&P 500 Index

$  100.00 

$ 

132.39 

$ 

150.51 

$ 

152.59 

$ 

170.84 

$  208.14 

S&P O&G E&P Index 

$  100.00 

$ 

127.49 

$ 

113.99 

$ 

75.06 

$ 

99.72 

$ 

93.43 

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

We are drilling low-cost, highly productive 
wells that generate high rates of return as a 
result of a low all-in cost of approximately  
$19 per barrel oil equivalent.

Timothy L. Dove
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FELLOW SHAREHOLDERS 

I am pleased to report that Pioneer had another excellent 

Total production grew by 16% during 2017 compared to

year in 2017, with strong earnings, solid execution, robust

oil production growth, excellent well performance and

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period and represented 58% of our total 2017 production.

reduced production costs. The key drivers of this strong 

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performance were the continued success of Pioneer’s

horizontal drilling program in the Permian Basin of West

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and technical revisions (excluding positive price revisions 

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Permian Basin asset is located in the top oil shale play 

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in North America and considered by many to be one of 

the best oil plays in the world. We are drilling low-cost, 

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production, were added at a highly competitive drillbit 

highly productive wells that generate high rates of return 

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as a result of a low all-in cost of approximately $19 per

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reduced further over time as our operations become

(cid:84)(cid:86)(cid:89)(cid:76)(cid:3)(cid:76)(cid:585)(cid:74)(cid:80)(cid:76)(cid:85)(cid:91)(cid:3)(cid:72)(cid:85)(cid:75)(cid:3)(cid:73)(cid:76)(cid:85)(cid:76)(cid:196)(cid:91)(cid:3)(cid:77)(cid:89)(cid:86)(cid:84)(cid:3)(cid:91)(cid:76)(cid:74)(cid:79)(cid:85)(cid:86)(cid:83)(cid:86)(cid:78)(cid:96)(cid:3)(cid:72)(cid:85)(cid:75)(cid:3)
innovation improvements.

During 2017, Pioneer’s stock performed in line with the 

(cid:72)(cid:93)(cid:76)(cid:89)(cid:72)(cid:78)(cid:76)(cid:3)(cid:86)(cid:77)(cid:3)(cid:80)(cid:91)(cid:90)(cid:3)(cid:24)(cid:24)(cid:20)(cid:74)(cid:86)(cid:84)(cid:87)(cid:72)(cid:85)(cid:96)(cid:3)(cid:44)(cid:13)(cid:55)(cid:3)(cid:87)(cid:76)(cid:76)(cid:89)(cid:3)(cid:78)(cid:89)(cid:86)(cid:92)(cid:87)(cid:21)(cid:3)(cid:54)(cid:93)(cid:76)(cid:89)(cid:3)(cid:91)(cid:79)(cid:76)(cid:3)

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year period covering 2015 through 2017, Pioneer’s stock 

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(cid:90)(cid:91)(cid:89)(cid:86)(cid:85)(cid:78)(cid:3)(cid:87)(cid:76)(cid:89)(cid:77)(cid:86)(cid:89)(cid:84)(cid:72)(cid:85)(cid:74)(cid:76)(cid:3)(cid:89)(cid:76)(cid:197)(cid:76)(cid:74)(cid:91)(cid:76)(cid:75)(cid:3)(cid:86)(cid:92)(cid:89)(cid:3)(cid:90)(cid:91)(cid:89)(cid:86)(cid:85)(cid:78)(cid:3)(cid:73)(cid:72)(cid:83)(cid:72)(cid:85)(cid:74)(cid:76)(cid:3)(cid:90)(cid:79)(cid:76)(cid:76)(cid:91)(cid:19)(cid:3)

(cid:72)(cid:91)(cid:91)(cid:89)(cid:72)(cid:74)(cid:91)(cid:80)(cid:93)(cid:76)(cid:3)(cid:75)(cid:76)(cid:89)(cid:80)(cid:93)(cid:72)(cid:91)(cid:80)(cid:93)(cid:76)(cid:90)(cid:3)(cid:87)(cid:86)(cid:90)(cid:80)(cid:91)(cid:80)(cid:86)(cid:85)(cid:19)(cid:3)(cid:80)(cid:84)(cid:87)(cid:89)(cid:86)(cid:93)(cid:80)(cid:85)(cid:78)(cid:3)(cid:74)(cid:72)(cid:87)(cid:80)(cid:91)(cid:72)(cid:83)(cid:3)(cid:76)(cid:585)(cid:74)(cid:80)(cid:76)(cid:85)(cid:74)(cid:96)(cid:3)
and excellent operational performance during a period of 

highly volatile commodity prices.

ANNUAL PRODUCTION

in MBOEPD

4
3
2

4
0
2

2
7
2

2015

2016

2017

2017 ANNUAL REPORT

1

20 

years supporting charity

(cid:59)(cid:79)(cid:76)(cid:3)(cid:42)(cid:86)(cid:84)(cid:87)(cid:72)(cid:85)(cid:96)(cid:3)(cid:89)(cid:76)(cid:75)(cid:92)(cid:74)(cid:76)(cid:75)(cid:3)(cid:87)(cid:89)(cid:86)(cid:75)(cid:92)(cid:74)(cid:91)(cid:80)(cid:86)(cid:85)(cid:3)(cid:74)(cid:86)(cid:90)(cid:91)(cid:90)(cid:3)(cid:87)(cid:76)(cid:89)(cid:3)(cid:41)(cid:54)(cid:44)(cid:3)(cid:73)(cid:96)
12% in 2017 compared to 2016 (excluding production 

(cid:91)(cid:72)(cid:95)(cid:76)(cid:90)(cid:16)(cid:21)(cid:3)(cid:59)(cid:79)(cid:76)(cid:3)(cid:75)(cid:76)(cid:74)(cid:89)(cid:76)(cid:72)(cid:90)(cid:76)(cid:3)(cid:94)(cid:72)(cid:90)(cid:3)(cid:75)(cid:89)(cid:80)(cid:93)(cid:76)(cid:85)(cid:3)(cid:73)(cid:96)(cid:3)(cid:74)(cid:86)(cid:90)(cid:91)(cid:20)(cid:89)(cid:76)(cid:75)(cid:92)(cid:74)(cid:91)(cid:80)(cid:86)(cid:85)
initiatives and increasing volumes of horizontal Permian

Basin production, which had an average production cost 

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Basin oil barrels are among the cheapest to produce in

the world.

2018 OUTLOOK

The petroleum industry has been operating in a lower oil 

(cid:87)(cid:89)(cid:80)(cid:74)(cid:76)(cid:3)(cid:76)(cid:85)(cid:93)(cid:80)(cid:89)(cid:86)(cid:85)(cid:84)(cid:76)(cid:85)(cid:91)(cid:3)(cid:90)(cid:80)(cid:85)(cid:74)(cid:76)(cid:3)(cid:83)(cid:72)(cid:91)(cid:76)(cid:3)(cid:25)(cid:23)(cid:24)(cid:27)(cid:19)(cid:3)(cid:94)(cid:79)(cid:76)(cid:85)(cid:3)(cid:53)(cid:86)(cid:89)(cid:91)(cid:79)(cid:3)(cid:40)(cid:84)(cid:76)(cid:89)(cid:80)(cid:74)(cid:72)(cid:85)
oil prices began declining due to a worldwide oversupply 

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(cid:55)(cid:76)(cid:91)(cid:89)(cid:86)(cid:83)(cid:76)(cid:92)(cid:84)(cid:3)(cid:44)(cid:95)(cid:87)(cid:86)(cid:89)(cid:91)(cid:80)(cid:85)(cid:78)(cid:3)(cid:42)(cid:86)(cid:92)(cid:85)(cid:91)(cid:89)(cid:80)(cid:76)(cid:90)(cid:3)(cid:15)(cid:54)(cid:55)(cid:44)(cid:42)(cid:16)(cid:3)(cid:84)(cid:76)(cid:84)(cid:73)(cid:76)(cid:89)(cid:90)(cid:3)(cid:72)(cid:85)(cid:75)(cid:3)
some nonmembers, led by Russia, pledged to reduce

their oil output by roughly 1.8 million barrels a day from 

Pioneer is focused on optimizing the development of 

our extensive Permian Basin resource. We continued 

(cid:54)(cid:74)(cid:91)(cid:86)(cid:73)(cid:76)(cid:89)(cid:3)(cid:25)(cid:23)(cid:24)(cid:29)(cid:3)(cid:83)(cid:76)(cid:93)(cid:76)(cid:83)(cid:90)(cid:3)(cid:91)(cid:86)(cid:3)(cid:75)(cid:89)(cid:72)(cid:94)(cid:3)(cid:75)(cid:86)(cid:94)(cid:85)(cid:3)(cid:94)(cid:86)(cid:89)(cid:83)(cid:75)(cid:94)(cid:80)(cid:75)(cid:76)(cid:3)(cid:80)(cid:85)(cid:93)(cid:76)(cid:85)(cid:91)(cid:86)(cid:89)(cid:80)(cid:76)(cid:90)(cid:3)
and reduce a global oversupply. The agreement 

to improve our well productivity in this play during

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2017 by utilizing higher-intensity fracture stimulations,

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concentrations with longer laterals, optimized stage

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members and some nonmembers agreed to lengthen 

the output reductions through December 2018. These

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operations contributed to this improved productivity.

output reductions represented an unprecedented level of 

cooperation among oil-producing countries and, coupled 

We also continued to build out our Permian Basin 

with healthy oil demand, resulted in an increase in oil

infrastructure, including the construction of large-

prices during 2017.

scale tank batteries and saltwater disposal facilities for 

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(cid:78)(cid:72)(cid:90)(cid:3)(cid:87)(cid:89)(cid:86)(cid:74)(cid:76)(cid:90)(cid:90)(cid:80)(cid:85)(cid:78)(cid:3)(cid:77)(cid:72)(cid:74)(cid:80)(cid:83)(cid:80)(cid:91)(cid:80)(cid:76)(cid:90)(cid:3)(cid:72)(cid:85)(cid:75)(cid:3)(cid:91)(cid:79)(cid:76)(cid:3)(cid:73)(cid:92)(cid:80)(cid:83)(cid:75)(cid:20)(cid:86)(cid:92)(cid:91)(cid:3)(cid:86)(cid:77)(cid:3)(cid:72)(cid:3)(cid:196)(cid:76)(cid:83)(cid:75)(cid:20)(cid:94)(cid:80)(cid:75)(cid:76)
water distribution system.

In 2018, the worldwide demand for oil is expected to 

further increase as economic growth around the world 

is forecasted to be stronger than the last several years. 

This demand increase is expected to be met by higher 

With growing oil production in the Permian Basin, we have

supplies of oil from U.S. shale production growth and 

increased our oil pipeline transportation capacity from

further oil inventory drawdowns. The Company expects

West Texas to the Gulf Coast in order to sell our oil to U.S.

ongoing oil price volatility during 2018 as compliance

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quarter of 2017, we shipped approximately 115 thousand 

with the output reduction agreement, changes in oil

inventories and actual demand growth are reported.

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(cid:40)(cid:90)(cid:80)(cid:72)(cid:19)(cid:3)(cid:44)(cid:92)(cid:89)(cid:86)(cid:87)(cid:76)(cid:3)(cid:72)(cid:85)(cid:75)(cid:3)(cid:51)(cid:72)(cid:91)(cid:80)(cid:85)(cid:3)(cid:40)(cid:84)(cid:76)(cid:89)(cid:80)(cid:74)(cid:72)(cid:21)(cid:3)(cid:54)(cid:92)(cid:89)(cid:3)(cid:83)(cid:86)(cid:85)(cid:78)(cid:76)(cid:89)(cid:20)(cid:91)(cid:76)(cid:89)(cid:84)(cid:3)(cid:91)(cid:72)(cid:89)(cid:78)(cid:76)(cid:91)(cid:3)(cid:80)(cid:90)(cid:3)
to transport 70% to 80% of forecasted net oil production

using dedicated pipeline transportation to the Gulf Coast.

(cid:44)(cid:72)(cid:89)(cid:83)(cid:80)(cid:76)(cid:89)(cid:3)(cid:91)(cid:79)(cid:80)(cid:90)(cid:3)(cid:96)(cid:76)(cid:72)(cid:89)(cid:19)(cid:3)(cid:94)(cid:76)(cid:3)(cid:72)(cid:85)(cid:85)(cid:86)(cid:92)(cid:85)(cid:74)(cid:76)(cid:75)(cid:3)(cid:87)(cid:83)(cid:72)(cid:85)(cid:90)(cid:3)(cid:91)(cid:86)(cid:3)(cid:75)(cid:80)(cid:93)(cid:76)(cid:90)(cid:91)(cid:3)(cid:91)(cid:79)(cid:76)
Company’s South Texas, Raton and West Panhandle 

assets. I want to personally thank all of our employees 

who operate and manage these assets for their

2

2017 ANNUAL REPORT

MIDLAND BASIN

Texas

commitment and dedication. These employees have 

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(cid:74)(cid:89)(cid:76)(cid:72)(cid:91)(cid:76)(cid:75)(cid:3)(cid:90)(cid:80)(cid:78)(cid:85)(cid:80)(cid:196)(cid:74)(cid:72)(cid:85)(cid:91)(cid:3)(cid:93)(cid:72)(cid:83)(cid:92)(cid:76)(cid:3)(cid:77)(cid:86)(cid:89)(cid:3)(cid:86)(cid:92)(cid:89)(cid:3)(cid:90)(cid:79)(cid:72)(cid:89)(cid:76)(cid:79)(cid:86)(cid:83)(cid:75)(cid:76)(cid:89)(cid:90)(cid:3)(cid:86)(cid:93)(cid:76)(cid:89)(cid:3)(cid:91)(cid:79)(cid:76)
many years we have owned these assets. After these

(cid:23)(cid:21)(cid:26)(cid:3)(cid:91)(cid:80)(cid:84)(cid:76)(cid:90)(cid:3)(cid:72)(cid:85)(cid:75)(cid:3)(cid:85)(cid:76)(cid:91)(cid:3)(cid:75)(cid:76)(cid:73)(cid:91)(cid:3)(cid:91)(cid:86)(cid:3)(cid:73)(cid:86)(cid:86)(cid:82)(cid:3)(cid:74)(cid:72)(cid:87)(cid:80)(cid:91)(cid:72)(cid:83)(cid:80)(cid:97)(cid:72)(cid:91)(cid:80)(cid:86)(cid:85)(cid:3)(cid:86)(cid:77)(cid:3)(cid:28)(cid:12)(cid:21)(cid:3)(cid:62)(cid:76)(cid:3)
continued to be rated mid-investment grade by Moody’s, 

divestitures are completed, Pioneer will be a Permian

(cid:58)(cid:13)(cid:55)(cid:3)(cid:72)(cid:85)(cid:75)(cid:3)(cid:45)(cid:80)(cid:91)(cid:74)(cid:79)(cid:21)(cid:3)(cid:48)(cid:85)(cid:3)(cid:72)(cid:75)(cid:75)(cid:80)(cid:91)(cid:80)(cid:86)(cid:85)(cid:19)(cid:3)(cid:72)(cid:91)(cid:91)(cid:89)(cid:72)(cid:74)(cid:91)(cid:80)(cid:93)(cid:76)(cid:3)(cid:86)(cid:80)(cid:83)(cid:3)(cid:75)(cid:76)(cid:89)(cid:80)(cid:93)(cid:72)(cid:91)(cid:80)(cid:93)(cid:76)

Basin “pure play.” At that time, the Company expects 

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(cid:89)(cid:76)(cid:87)(cid:86)(cid:89)(cid:91)(cid:76)(cid:75)(cid:3)(cid:89)(cid:76)(cid:93)(cid:76)(cid:85)(cid:92)(cid:76)(cid:3)(cid:87)(cid:76)(cid:89)(cid:3)(cid:41)(cid:54)(cid:44)(cid:3)(cid:91)(cid:86)(cid:3)(cid:80)(cid:85)(cid:74)(cid:89)(cid:76)(cid:72)(cid:90)(cid:76)(cid:3)(cid:72)(cid:85)(cid:75)(cid:3)(cid:86)(cid:87)(cid:76)(cid:89)(cid:72)(cid:91)(cid:80)(cid:85)(cid:78)(cid:3)

(cid:76)(cid:95)(cid:87)(cid:76)(cid:85)(cid:90)(cid:76)(cid:3)(cid:87)(cid:76)(cid:89)(cid:3)(cid:41)(cid:54)(cid:44)(cid:3)(cid:91)(cid:86)(cid:3)(cid:75)(cid:76)(cid:74)(cid:89)(cid:76)(cid:72)(cid:90)(cid:76)(cid:19)(cid:3)(cid:91)(cid:79)(cid:76)(cid:89)(cid:76)(cid:73)(cid:96)(cid:3)(cid:90)(cid:80)(cid:78)(cid:85)(cid:80)(cid:196)(cid:74)(cid:72)(cid:85)(cid:91)(cid:83)(cid:96)
improving reported cash operating margins. 

The 2018 capital program of $2.9 billion, which includes 

$2.65 billion for drilling and completion activities and

$260 million for water infrastructure, vertical integration

As a Permian Basin and, further, a Midland Basin “pure 

(cid:72)(cid:85)(cid:75)(cid:3)(cid:196)(cid:76)(cid:83)(cid:75)(cid:3)(cid:77)(cid:72)(cid:74)(cid:80)(cid:83)(cid:80)(cid:91)(cid:80)(cid:76)(cid:90)(cid:19)(cid:3)(cid:94)(cid:80)(cid:83)(cid:83)(cid:3)(cid:73)(cid:76)(cid:3)(cid:77)(cid:92)(cid:85)(cid:75)(cid:76)(cid:75)(cid:3)(cid:77)(cid:89)(cid:86)(cid:84)(cid:3)(cid:77)(cid:86)(cid:89)(cid:76)(cid:74)(cid:72)(cid:90)(cid:91)(cid:76)(cid:75)(cid:3)(cid:74)(cid:72)(cid:90)(cid:79)(cid:3)

play,” Pioneer is well positioned to drill high-return wells, 

(cid:197)(cid:86)(cid:94)(cid:3)(cid:86)(cid:77)(cid:3)(cid:11)(cid:25)(cid:21)(cid:31)(cid:3)(cid:73)(cid:80)(cid:83)(cid:83)(cid:80)(cid:86)(cid:85)(cid:3)(cid:15)(cid:72)(cid:90)(cid:90)(cid:92)(cid:84)(cid:80)(cid:85)(cid:78)(cid:3)(cid:72)(cid:85)(cid:3)(cid:86)(cid:80)(cid:83)(cid:3)(cid:87)(cid:89)(cid:80)(cid:74)(cid:76)(cid:3)(cid:86)(cid:77)(cid:3)(cid:11)(cid:28)(cid:28)(cid:3)(cid:87)(cid:76)(cid:89)(cid:3)(cid:73)(cid:72)(cid:89)(cid:89)(cid:76)(cid:83)

grow production and bring forward the inherent net asset 

value associated with this asset. We are forecasting

(cid:72)(cid:85)(cid:75)(cid:3)(cid:72)(cid:3)(cid:78)(cid:72)(cid:90)(cid:3)(cid:87)(cid:89)(cid:80)(cid:74)(cid:76)(cid:3)(cid:86)(cid:77)(cid:3)(cid:11)(cid:26)(cid:3)(cid:87)(cid:76)(cid:89)(cid:3)(cid:52)(cid:42)(cid:45)(cid:16)(cid:19)(cid:3)(cid:87)(cid:89)(cid:86)(cid:74)(cid:76)(cid:76)(cid:75)(cid:90)(cid:3)(cid:77)(cid:89)(cid:86)(cid:84)(cid:3)(cid:72)(cid:90)(cid:90)(cid:76)(cid:91)
divestitures and cash on hand. Derivative positions are 

Permian Basin oil production growth in 2018 ranging

expected to cover more than 85% of forecasted 2018 

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drilling program to average 65%, assuming an oil price of 

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(cid:74)(cid:92)(cid:73)(cid:80)(cid:74)(cid:3)(cid:77)(cid:76)(cid:76)(cid:91)(cid:3)(cid:15)(cid:52)(cid:42)(cid:45)(cid:16)(cid:21)

In addition to maintaining strong returns on invested 

capital, we also believe in returning cash to shareholders

and recently announced an increase in the Company’s

semiannual dividend to $0.16 per share (equivalent to 

(cid:11)(cid:23)(cid:21)(cid:26)(cid:25)(cid:3)(cid:87)(cid:76)(cid:89)(cid:3)(cid:90)(cid:79)(cid:72)(cid:89)(cid:76)(cid:3)(cid:86)(cid:85)(cid:3)(cid:72)(cid:85)(cid:3)(cid:72)(cid:85)(cid:85)(cid:92)(cid:72)(cid:83)(cid:80)(cid:97)(cid:76)(cid:75)(cid:3)(cid:73)(cid:72)(cid:90)(cid:80)(cid:90)(cid:16)(cid:21)(cid:3)(cid:42)(cid:86)(cid:85)(cid:74)(cid:92)(cid:89)(cid:89)(cid:76)(cid:85)(cid:91)(cid:83)(cid:96)(cid:19)
we announced a common stock repurchase program

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employee stock compensation awards.

STRONG FINANCIAL POSITION

Pioneer continues to maintain one of the best balance 

sheets in the energy industry. We had $2.2 billion of cash 

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PIONEER’S 2017 PERMIAN BASIN 
HORIZONTAL COST STRUCTURE

$/BOE

~$19

$1.54

$3.28

$4.46

Interest Expense

G&A

Production  
Costs and Taxes

Proved  
Developed F&D

$9.40

2017 ANNUAL REPORT 3

Permian Basin oil production and more than 60% of 

forecasted 2018 Permian Basin gas production. The ratio

(cid:86)(cid:77)(cid:3)(cid:85)(cid:76)(cid:91)(cid:3)(cid:75)(cid:76)(cid:73)(cid:91)(cid:3)(cid:91)(cid:86)(cid:3)(cid:77)(cid:86)(cid:89)(cid:76)(cid:74)(cid:72)(cid:90)(cid:91)(cid:76)(cid:75)(cid:3)(cid:25)(cid:23)(cid:24)(cid:31)(cid:3)(cid:86)(cid:87)(cid:76)(cid:89)(cid:72)(cid:91)(cid:80)(cid:85)(cid:78)(cid:3)(cid:74)(cid:72)(cid:90)(cid:79)(cid:3)(cid:197)(cid:86)(cid:94)(cid:3)(cid:80)(cid:90)
expected to remain below 0.5 times throughout the year.

TEN-YEAR VISION

We are in year two of our 10-year plan and remain 

committed to achieving oil production greater than

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barrels oil equivalent per day in 2026. By steadily 

increasing the pace of drilling our low-cost, high-return 

Permian Basin horizontal wells through 2026, we expect 

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our capital program, improve our corporate returns and

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10-Year Growth Target
>700 MBOPD and
>1 MMBOEPD in 2026

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our planned capital program declines from approximately 

CONTINUED FOCUS ON SAFETY AND THE 
ENVIRONMENT

$58 per barrel in 2018 to approximately $50 per barrel 

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(cid:72)(cid:85)(cid:3)(cid:86)(cid:80)(cid:83)(cid:3)(cid:87)(cid:89)(cid:80)(cid:74)(cid:76)(cid:3)(cid:86)(cid:77)(cid:3)(cid:11)(cid:28)(cid:28)(cid:3)(cid:87)(cid:76)(cid:89)(cid:3)(cid:73)(cid:72)(cid:89)(cid:89)(cid:76)(cid:83)(cid:3)(cid:72)(cid:85)(cid:75)(cid:3)(cid:72)(cid:3)(cid:78)(cid:72)(cid:90)(cid:3)(cid:87)(cid:89)(cid:80)(cid:74)(cid:76)(cid:3)(cid:86)(cid:77)(cid:3)(cid:11)(cid:26)(cid:3)(cid:87)(cid:76)(cid:89)(cid:3)

(cid:52)(cid:42)(cid:45)(cid:19)(cid:3)(cid:86)(cid:92)(cid:89)(cid:3)(cid:74)(cid:72)(cid:90)(cid:79)(cid:3)(cid:197)(cid:86)(cid:94)(cid:3)(cid:80)(cid:90)(cid:3)(cid:76)(cid:95)(cid:87)(cid:76)(cid:74)(cid:91)(cid:76)(cid:75)(cid:3)(cid:91)(cid:86)(cid:3)(cid:78)(cid:89)(cid:86)(cid:94)(cid:3)(cid:73)(cid:96)(cid:3)(cid:72)(cid:87)(cid:87)(cid:89)(cid:86)(cid:95)(cid:80)(cid:84)(cid:72)(cid:91)(cid:76)(cid:83)(cid:96)
20% annually and to exceed $11 billion in 2026, and our

return on capital employed is forecasted to increase from 

approximately 5% in 2018 to 15% in 2026 or sooner.      

During 2017, the Company published its inaugural

Sustainability Report. The report highlights the programs 

and initiatives that we have implemented over many

years to protect the environment; ensure the health, 

safety and professional development of our employees;

promote high standards of integrity and business 

conduct; and positively impact the communities in which

we live and work.

Pioneer had safety and environmental accomplishments

in a number of important areas in 2017. Focusing on 

creating an incident-free and injury-free workplace, we

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and spill volumes. Building out our successful water

management infrastructure in West Texas and securing

additional supplies of non-potable water allow us to 

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stimulation operations. Reusing non-potable water from 

our fracture stimulation operations is also contributing

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Partnership Award for our water conservation projects in 

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4

2017 ANNUAL REPORT

~3,900 

employees

OUR PEOPLE PROVIDE A COMPETITIVE 
ADVANTAGE

back in meaningful ways to the communities where

they work and live by volunteering their personal time 

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day in and day out. This would not happen without 

the commitment to excellence displayed by Pioneer 

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we continue to enhance, and a diverse and inclusive 

workforce with strong technical skills, the inspiration to 

pursue the application of new technology and innovations

in our operations and a focus on achieving success. 

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among large companies in the Dallas/Fort Worth area

and resources. 

In closing, we have successfully managed through three

years of lower commodity prices by diligently focusing

on reducing costs, improving well productivity and

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are well positioned to execute at a high level and enhance

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to shareholders and improving corporate returns.

based on a survey of our employees conducted by The 

Sincerely,

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

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I want to thank each and every person at Pioneer for

the tremendous contributions they made to our

continuing strong performance in 2017 and for giving 

Timothy L. Dove
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business prospects of Pioneer Natural Resources Company are subject to a number of risks and uncertainties that may cause Pioneer’s
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Items 1, 1A and 7 on page 5 of Pioneer’s Form 10-K included with this report.

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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. 

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(cid:184)(cid:57)(cid:76)(cid:91)(cid:92)(cid:89)(cid:85)(cid:3)(cid:86)(cid:85)(cid:3)(cid:74)(cid:72)(cid:87)(cid:80)(cid:91)(cid:72)(cid:83)(cid:3)(cid:76)(cid:84)(cid:87)(cid:83)(cid:86)(cid:96)(cid:76)(cid:75)(cid:185)(cid:3)(cid:15)(cid:57)(cid:54)(cid:42)(cid:44)(cid:16)(cid:3)(cid:80)(cid:90)(cid:3)(cid:72)(cid:3)(cid:85)(cid:86)(cid:85)(cid:20)(cid:46)(cid:40)(cid:40)(cid:55)(cid:3)(cid:196)(cid:85)(cid:72)(cid:85)(cid:74)(cid:80)(cid:72)(cid:83)(cid:3)(cid:84)(cid:76)(cid:72)(cid:90)(cid:92)(cid:89)(cid:76)(cid:21)(cid:3)(cid:40)(cid:90)(cid:3)(cid:92)(cid:90)(cid:76)(cid:75)(cid:3)(cid:73)(cid:96)(cid:3)(cid:91)(cid:79)(cid:76)(cid:3)(cid:42)(cid:86)(cid:84)(cid:87)(cid:72)(cid:85)(cid:96)(cid:19)(cid:3)(cid:57)(cid:54)(cid:42)(cid:44)(cid:3)(cid:80)(cid:90)(cid:3)(cid:85)(cid:76)(cid:91)(cid:3)(cid:80)(cid:85)(cid:74)(cid:86)(cid:84)(cid:76)(cid:3)(cid:72)(cid:75)(cid:81)(cid:92)(cid:90)(cid:91)(cid:76)(cid:75)(cid:3)(cid:77)(cid:86)(cid:89)(cid:3)(cid:91)(cid:72)(cid:95)(cid:20)
(cid:76)(cid:584)(cid:76)(cid:74)(cid:91)(cid:76)(cid:75)(cid:3)(cid:80)(cid:85)(cid:91)(cid:76)(cid:89)(cid:76)(cid:90)(cid:91)(cid:3)(cid:76)(cid:95)(cid:87)(cid:76)(cid:85)(cid:90)(cid:76)(cid:19)(cid:3)(cid:85)(cid:76)(cid:91)(cid:3)(cid:85)(cid:86)(cid:85)(cid:74)(cid:72)(cid:90)(cid:79)(cid:3)(cid:84)(cid:72)(cid:89)(cid:82)(cid:20)(cid:91)(cid:86)(cid:20)(cid:84)(cid:72)(cid:89)(cid:82)(cid:76)(cid:91)(cid:3)(cid:75)(cid:76)(cid:89)(cid:80)(cid:93)(cid:72)(cid:91)(cid:80)(cid:93)(cid:76)(cid:3)(cid:78)(cid:72)(cid:80)(cid:85)(cid:90)(cid:3)(cid:72)(cid:85)(cid:75)(cid:3)(cid:83)(cid:86)(cid:90)(cid:90)(cid:76)(cid:90)(cid:3)(cid:72)(cid:85)(cid:75)(cid:3)(cid:86)(cid:91)(cid:79)(cid:76)(cid:89)(cid:3)(cid:92)(cid:85)(cid:92)(cid:90)(cid:92)(cid:72)(cid:83)(cid:3)(cid:80)(cid:91)(cid:76)(cid:84)(cid:90)(cid:3)(cid:75)(cid:80)(cid:93)(cid:80)(cid:75)(cid:76)(cid:75)(cid:3)(cid:73)(cid:96)(cid:3)(cid:91)(cid:79)(cid:76)(cid:3)(cid:90)(cid:92)(cid:84)(cid:84)(cid:72)(cid:91)(cid:80)(cid:86)(cid:85)(cid:3)
of average equity plus average net debt.

2017 ANNUAL REPORT 5

Larry R. Grillot 2,5
Retired Dean, Mewbourne 
(cid:42)(cid:86)(cid:83)(cid:83)(cid:76)(cid:78)(cid:76)(cid:3)(cid:86)(cid:77)(cid:3)(cid:44)(cid:72)(cid:89)(cid:91)(cid:79)(cid:3)(cid:72)(cid:85)(cid:75)(cid:3)(cid:44)(cid:85)(cid:76)(cid:89)(cid:78)(cid:96) 
(cid:59)(cid:79)(cid:76)(cid:3)(cid:60)(cid:85)(cid:80)(cid:93)(cid:76)(cid:89)(cid:90)(cid:80)(cid:91)(cid:96)(cid:3)(cid:86)(cid:77)(cid:3)(cid:54)(cid:82)(cid:83)(cid:72)(cid:79)(cid:86)(cid:84)(cid:72)(cid:3)

Stacy P. Methvin 3,5
(cid:57)(cid:76)(cid:91)(cid:80)(cid:89)(cid:76)(cid:75)(cid:3)(cid:61)(cid:80)(cid:74)(cid:76)(cid:3)(cid:55)(cid:89)(cid:76)(cid:90)(cid:80)(cid:75)(cid:76)(cid:85)(cid:91)
(cid:58)(cid:79)(cid:76)(cid:83)(cid:83)(cid:3)(cid:54)(cid:80)(cid:83)(cid:3)(cid:42)(cid:86)(cid:84)(cid:87)(cid:72)(cid:85)(cid:96)

Royce W. Mitchell 2,5
(cid:44)(cid:95)(cid:76)(cid:74)(cid:92)(cid:91)(cid:80)(cid:93)(cid:76)(cid:3)(cid:42)(cid:86)(cid:85)(cid:90)(cid:92)(cid:83)(cid:91)(cid:72)(cid:85)(cid:91)

Frank A. Risch 2,4
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Treasurer
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Mona K. Sutphen 3,5
Partner  
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J. Kenneth Thompson 1,3,4
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(cid:55)(cid:72)(cid:74)(cid:80)(cid:196)(cid:74)(cid:3)(cid:58)(cid:91)(cid:72)(cid:89)(cid:3)(cid:44)(cid:85)(cid:76)(cid:89)(cid:78)(cid:96)(cid:3)(cid:51)(cid:51)(cid:42)

Phoebe A. Wood 2,4
(cid:57)(cid:76)(cid:91)(cid:80)(cid:89)(cid:76)(cid:75)(cid:3)(cid:61)(cid:80)(cid:74)(cid:76)(cid:3)(cid:42)(cid:79)(cid:72)(cid:80)(cid:89)(cid:84)(cid:72)(cid:85)(cid:3)(cid:72)(cid:85)(cid:75)(cid:3)
(cid:42)(cid:79)(cid:80)(cid:76)(cid:77)(cid:3)(cid:45)(cid:80)(cid:85)(cid:72)(cid:85)(cid:74)(cid:80)(cid:72)(cid:83)(cid:3)(cid:54)(cid:585)(cid:74)(cid:76)(cid:89)
Brown-Forman Corporation

Michael D. Wortley 2,4
(cid:42)(cid:79)(cid:80)(cid:76)(cid:77)(cid:3)(cid:51)(cid:76)(cid:78)(cid:72)(cid:83)(cid:3)(cid:54)(cid:585)(cid:74)(cid:76)(cid:89)(cid:3) 
Reata Pharmaceuticals, Inc.

COMMITTEE 
MEMBERSHIP:

1(cid:3)(cid:51)(cid:76)(cid:72)(cid:75)(cid:3)(cid:43)(cid:80)(cid:89)(cid:76)(cid:74)(cid:91)(cid:86)(cid:89)

2 Audit Committee

(cid:26)  Compensation and 

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Committee 

(cid:27)  Nominating and Corporate  

Governance Committee

5(cid:3)(cid:3)(cid:47)(cid:76)(cid:72)(cid:83)(cid:91)(cid:79)(cid:19)(cid:3)(cid:58)(cid:72)(cid:77)(cid:76)(cid:91)(cid:96)(cid:3)(cid:72)(cid:85)(cid:75)(cid:3)

(cid:44)(cid:85)(cid:93)(cid:80)(cid:89)(cid:86)(cid:85)(cid:84)(cid:76)(cid:85)(cid:91)(cid:3)(cid:42)(cid:86)(cid:84)(cid:84)(cid:80)(cid:91)(cid:91)(cid:76)(cid:76)

Kenneth H. Sheffield, Jr.
(cid:44)(cid:95)(cid:76)(cid:74)(cid:92)(cid:91)(cid:80)(cid:93)(cid:76)(cid:3)(cid:61)(cid:80)(cid:74)(cid:76)(cid:3)(cid:55)(cid:89)(cid:76)(cid:90)(cid:80)(cid:75)(cid:76)(cid:85)(cid:91)
(cid:54)(cid:87)(cid:76)(cid:89)(cid:72)(cid:91)(cid:80)(cid:86)(cid:85)(cid:90)(cid:22)(cid:44)(cid:85)(cid:78)(cid:80)(cid:85)(cid:76)(cid:76)(cid:89)(cid:80)(cid:85)(cid:78)(cid:22)
Facilities

William F. Hannes
(cid:58)(cid:76)(cid:85)(cid:80)(cid:86)(cid:89)(cid:3)(cid:61)(cid:80)(cid:74)(cid:76)(cid:3)(cid:55)(cid:89)(cid:76)(cid:90)(cid:80)(cid:75)(cid:76)(cid:85)(cid:91)(cid:3)
Special Projects

Frank E. Hopkins
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Investor Relations

Mark H. Kleinman
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General Counsel

John C. Distaso
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Marketing

Teresa A. Fairbrook
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(cid:47)(cid:92)(cid:84)(cid:72)(cid:85)(cid:3)(cid:57)(cid:76)(cid:90)(cid:86)(cid:92)(cid:89)(cid:74)(cid:76)(cid:90)(cid:3)(cid:54)(cid:585)(cid:74)(cid:76)(cid:89)

Thomas D. Sheffield
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Robert C. Hagens
(cid:61)(cid:80)(cid:74)(cid:76)(cid:3)(cid:55)(cid:89)(cid:76)(cid:90)(cid:80)(cid:75)(cid:76)(cid:85)(cid:91)(cid:3) 
(cid:51)(cid:72)(cid:85)(cid:75)(cid:3)(cid:72)(cid:85)(cid:75)(cid:3)(cid:57)(cid:76)(cid:78)(cid:92)(cid:83)(cid:72)(cid:91)(cid:86)(cid:89)(cid:96)(cid:3)(cid:40)(cid:584)(cid:72)(cid:80)(cid:89)(cid:90)(cid:3)

Tom D. Spalding
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Geoscience

Paul McDonald
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(cid:61)(cid:76)(cid:89)(cid:91)(cid:80)(cid:74)(cid:72)(cid:83)(cid:83)(cid:96)(cid:3)(cid:48)(cid:85)(cid:91)(cid:76)(cid:78)(cid:89)(cid:72)(cid:91)(cid:76)(cid:75)(cid:3)(cid:58)(cid:76)(cid:89)(cid:93)(cid:80)(cid:74)(cid:76)(cid:90)

Susan A. Spratlen
(cid:61)(cid:80)(cid:74)(cid:76)(cid:3)(cid:55)(cid:89)(cid:76)(cid:90)(cid:80)(cid:75)(cid:76)(cid:85)(cid:91) 
(cid:55)(cid:76)(cid:89)(cid:84)(cid:80)(cid:72)(cid:85)(cid:3)(cid:40)(cid:584)(cid:72)(cid:80)(cid:89)(cid:90)

Margaret M. Montemayor
(cid:61)(cid:80)(cid:74)(cid:76)(cid:3)(cid:55)(cid:89)(cid:76)(cid:90)(cid:80)(cid:75)(cid:76)(cid:85)(cid:91)(cid:3)(cid:72)(cid:85)(cid:75)
(cid:42)(cid:79)(cid:80)(cid:76)(cid:77)(cid:3)(cid:40)(cid:74)(cid:74)(cid:86)(cid:92)(cid:85)(cid:91)(cid:80)(cid:85)(cid:78)(cid:3)(cid:54)(cid:585)(cid:74)(cid:76)(cid:89)

Stephanie D. Stewart
(cid:61)(cid:80)(cid:74)(cid:76)(cid:3)(cid:55)(cid:89)(cid:76)(cid:90)(cid:80)(cid:75)(cid:76)(cid:85)(cid:91)(cid:3)(cid:72)(cid:85)(cid:75)
(cid:42)(cid:79)(cid:80)(cid:76)(cid:77)(cid:3)(cid:48)(cid:85)(cid:77)(cid:86)(cid:89)(cid:84)(cid:72)(cid:91)(cid:80)(cid:86)(cid:85)(cid:3)(cid:54)(cid:585)(cid:74)(cid:76)(cid:89)

Thaddeus J. Owens
(cid:61)(cid:80)(cid:74)(cid:76)(cid:3)(cid:55)(cid:89)(cid:76)(cid:90)(cid:80)(cid:75)(cid:76)(cid:85)(cid:91)
Communications and
Government Relations

Thomas J. Murphy
Corporate Secretary

BOARD OF DIRECTORS

Scott D. Sheffield
Chairman of the Board

Edison C. Buchanan 3,4
Former Managing Director
Credit Suisse First Boston

Andrew F. Cates 3,4
Managing Member
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Timothy L. Dove
President and
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Phillip A. Gobe 3,5
Former President and
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(cid:44)(cid:85)(cid:76)(cid:89)(cid:78)(cid:96)(cid:3)(cid:55)(cid:72)(cid:89)(cid:91)(cid:85)(cid:76)(cid:89)(cid:90)(cid:19)(cid:3)(cid:51)(cid:91)(cid:75)(cid:21)

OFFICERS 

Timothy L. Dove
President and  
(cid:42)(cid:79)(cid:80)(cid:76)(cid:77)(cid:3)(cid:44)(cid:95)(cid:76)(cid:74)(cid:92)(cid:91)(cid:80)(cid:93)(cid:76)(cid:3)(cid:54)(cid:585)(cid:74)(cid:76)(cid:89)

Mark S. Berg
(cid:44)(cid:95)(cid:76)(cid:74)(cid:92)(cid:91)(cid:80)(cid:93)(cid:76)(cid:3)(cid:61)(cid:80)(cid:74)(cid:76)(cid:3)(cid:55)(cid:89)(cid:76)(cid:90)(cid:80)(cid:75)(cid:76)(cid:85)(cid:91)(cid:3)
(cid:42)(cid:86)(cid:89)(cid:87)(cid:86)(cid:89)(cid:72)(cid:91)(cid:76)(cid:22)(cid:61)(cid:76)(cid:89)(cid:91)(cid:80)(cid:74)(cid:72)(cid:83)(cid:83)(cid:96)(cid:3)
(cid:48)(cid:85)(cid:91)(cid:76)(cid:78)(cid:89)(cid:72)(cid:91)(cid:76)(cid:75)(cid:3)(cid:54)(cid:87)(cid:76)(cid:89)(cid:72)(cid:91)(cid:80)(cid:86)(cid:85)(cid:90)

Chris J. Cheatwood
(cid:44)(cid:95)(cid:76)(cid:74)(cid:92)(cid:91)(cid:80)(cid:93)(cid:76)(cid:3)(cid:61)(cid:80)(cid:74)(cid:76)(cid:3)(cid:55)(cid:89)(cid:76)(cid:90)(cid:80)(cid:75)(cid:76)(cid:85)(cid:91)
and Chief Technology 
(cid:54)(cid:585)(cid:74)(cid:76)(cid:89)

Richard P. Dealy
(cid:44)(cid:95)(cid:76)(cid:74)(cid:92)(cid:91)(cid:80)(cid:93)(cid:76)(cid:3)(cid:61)(cid:80)(cid:74)(cid:76)(cid:3)(cid:55)(cid:89)(cid:76)(cid:90)(cid:80)(cid:75)(cid:76)(cid:85)(cid:91)(cid:3)
(cid:72)(cid:85)(cid:75)(cid:3)(cid:42)(cid:79)(cid:80)(cid:76)(cid:77)(cid:3)(cid:45)(cid:80)(cid:85)(cid:72)(cid:85)(cid:74)(cid:80)(cid:72)(cid:83)(cid:3)(cid:54)(cid:585)(cid:74)(cid:76)(cid:89)

J. D. Hall
(cid:44)(cid:95)(cid:76)(cid:74)(cid:92)(cid:91)(cid:80)(cid:93)(cid:76)(cid:3)(cid:61)(cid:80)(cid:74)(cid:76)(cid:3)(cid:55)(cid:89)(cid:76)(cid:90)(cid:80)(cid:75)(cid:76)(cid:85)(cid:91)
(cid:55)(cid:76)(cid:89)(cid:84)(cid:80)(cid:72)(cid:85)(cid:3)(cid:54)(cid:87)(cid:76)(cid:89)(cid:72)(cid:91)(cid:80)(cid:86)(cid:85)(cid:90)

6

2017 ANNUAL REPORT
2017 ANNUAL REPORT

STRENGTH   
IN  NUMBERS

2017 10-K AND ANNUAL REPORT

Pioneer Pumping Services employees demonstrated new safety procedures 
during their 2017 Better, Safer, Every Day Tour presentation.

Through competitive Corporate Challenge events 
like dodgeball (2017 gold medal), Pioneer has built 
camaraderie while raising money for Special Olympics 
Texas for the past seven years.

Pioneer has partnered with Dallas Area Habitat 
for Humanity for 12 years, building 20 homes and 
repairing 27 homes through the “A Brush with 
Kindness” program.

2017 marked the eighth year that Pioneer ranked in the 
top five of the The Dallas Morning News’ Top 100 Places 
to Work in the large company category.

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

FORM 10-K

ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT
OF 1934
For the fiscal year ended December 31, 2017 

or

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

For the transition period from                  to                 

Commission File Number: 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

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

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

     No   

Aggregate market value of 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 $ 26,939,176,465

Number of shares of Common Stock outstanding as of February 14, 2018

170,300,825

DOCUMENTS INCORPORATED BY REFERENCE:
(1)  Portions of the Definitive Proxy Statement for the Company's Annual Meeting of Shareholders to be held during May 2018 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 2018 Outlook
2018 Capital Budget
Acquisitions
Divestitures
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

2

Page
4
5

6
6
6
6
7
9
10
15
32
32
32
35
36
38
44
44
45

48
48
49
50
50
50
51
51
51
52
57
61
63
64
64
67
69
69
70
71
77
109
118
118
118
119
120

 
 
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

120
120
120
120
121
121

121
121

3

Definitions of Certain Terms and Conventions Used Herein

• 

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• 

• 

• 

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• 

• 

• 
• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

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• 

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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.

"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.

"GHG" means green house gases.
"HH" means Henry Hub, a distribution hub on the natural gas pipeline in Louisiana that serves as the delivery location for 
futures contracts on the NYMEX.

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

"LLS" means Louisiana light sweet oil, a light, sweet blend of oil produced from the Gulf of Mexico.

"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. 

4

(iii) Where direct observation from well penetrations has defined a highest known oil ("HKO") elevation and the potential 
exists for an associated gas cap, proved oil reserves may be assigned in the structurally higher portions of the reservoir only 
if geoscience, engineering or performance data and reliable technology establish the higher contact with reasonable certainty. 

(iv) Reserves which can be produced economically through application of improved recovery techniques (including, but 
not limited to, fluid injection) are included in the proved classification when: (A) Successful testing by a pilot project in an 
area of the reservoir with properties no more favorable than in the reservoir as a whole, the operation of an installed program 
in the reservoir or an analogous reservoir, or other evidence using reliable technology establishes the reasonable certainty 
of  the  engineering  analysis  on  which  the  project  or  program  was  based;  and  (B) The  project  has  been  approved  for 
development by all necessary parties and entities, including governmental entities. 

(v)  Existing  economic  conditions  include  prices  and  costs  at  which  economic  producibility  from  a  reservoir  is  to  be 
determined. The price shall be the average 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.

• 

"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.

• 

• 

• 

• 

• 

• 

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 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 is a Delaware corporation, and its 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, 2017, Pioneer had 3,836 employees, 1,423 of whom were employed in field and plant operations and 

1,010 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; 
• 
• 

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;
developing and training employees and contractors to perform their jobs in a safe manner; and
stewarding the environment through industry leading sustainable development efforts.

• 
• 

The Company's long-term strategy is 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, 2017. 

In  February  2018,  the  Company  announced  plans  to  divest  its  oil  and  gas  production  activities  and  development  and 

exploration opportunities in the following areas:

• 
• 
• 
• 
• 

the Eagle Ford Shale gas and liquids field located in South Texas;
the Raton gas field located in southern Colorado;
the West Panhandle gas and liquids field located in the Texas Panhandle;
the Edwards gas field located in South Texas; and 
the Sinor Nest Wilcox oil field located in South Texas.

No assurance can be given that the sales will be completed in accordance with the Company's plans or on terms and at 

prices acceptable to the Company.

6

Business Activities

PIONEER NATURAL RESOURCES COMPANY

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 
and opportunities are primarily located in the Spraberry/Wolfcamp oil field, and provide long-lived, dependable production and 
lower-risk exploration and development opportunities. 

Petroleum industry. The petroleum industry has been operating in a lower 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, the Organization 
of Petroleum Exporting Countries ("OPEC") members and some nonmembers, led by Russia, pledged to reduce their oil output 
by roughly 1.8 million barrels a day from October 2016 levels in an effort to draw down a global oversupply and to rebalance 
supply and demand. The agreement became effective in January 2017 and was originally set to expire in March 2018. During 
November 2017, OPEC members and some nonmembers agreed to lengthen the output reductions through December 2018. These 
output reductions represented an unprecedented level of cooperation among oil-producing countries and, coupled with healthy oil 
demand, resulted in an increase in oil prices during 2017. In 2018, the worldwide demand for oil is expected to increase further 
as economic growth around the world is forecasted to be stronger than the last several years. This demand increase is expected to 
be met by higher supplies of oil from U.S. shale production growth and further oil inventory drawdowns. The Company expects 
ongoing oil price volatility as compliance with the output reduction agreement, changes in oil inventories and actual demand 
growth 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 increase during 2018, which is expected to cause prices to decline slightly or 
remain flat during 2018.

Significant factors that are likely to affect 2018 commodity prices include: the effect of new policies enacted by the President 
of the United States and his administration; fiscal challenges facing the United States federal government; enacted changes to the 
tax laws in the United States; expected economic growth throughout the world; political and economic developments in North 
Africa and the Middle East; forecasted increased 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 December 
2018; 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 at normal levels 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 for 2018 and, to a lesser extent, its forecasted 2019 production; 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, 2017, and subsequent changes to these positions.

Liquidity. In spite of the lower commodity price environment, the Company has maintained a strong liquidity position. The 
Company's primary needs for cash are for capital expenditures, acquisitions of oil and gas properties, vertical integration assets 
and facilities, payments of contractual obligations, including debt maturities, dividends, share repurchases and working capital 
obligations. Principal sources of liquidity include cash and cash equivalents, net cash provided by operating activities, short-term 
and long-term investments, 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 

7

PIONEER NATURAL RESOURCES COMPANY

costs associated with production activities. For the year ended December 31, 2017, the Company's production of 99 MMBOE, 
excluding field fuel usage, represented a 16 percent increase compared to production during 2016. Production, price and cost 
information with respect to the Company's properties for 2017, 2016 and 2015 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. The Company periodically 
evaluates and pursues acquisition opportunities (including opportunities 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 materially and adversely affect its 
business."

During 2017, 2016 and 2015, the Company spent $136 million, $446 million and $36 million, respectively, primarily to 
purchase undeveloped acreage for future exploitation and exploration activities in the Spraberry/Wolfcamp field of the Permian 
Basin. 

2016 Permian Basin acquisition. The Company's 2016 acquisition activities included 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.

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, 2017, the Company drilled 181 gross (130 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 $2.0 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, 2017 include proved undeveloped reserves 
and proved developed non-producing reserves of 45 MMBbls of oil, 22 MMBbls of NGLs and 291 Bcf of gas. 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, Pioneer Sands LLC, the Company's wholly-owned sand 
mining subsidiary, is supplying high-quality 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  constructing  a  field-wide  water  distribution  system  to  reduce  the  cost  of  water  for  drilling  and 
completion activities and to secure adequate supplies of water to support the Company's long-term growth plan for the Spraberry/
Wolfcamp field. During 2017, the Company expanded its mainline system, subsystems and frac ponds to efficiently deliver water 
to Pioneer's drilling locations. The Company is purchasing up to 120 thousand barrels per day of effluent water from the City of 
Odessa and has 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. Once the upgrade to the wastewater treatment plant is complete, the Company 
expects to 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.

8

PIONEER NATURAL RESOURCES COMPANY

Asset divestitures. 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. In February 2018, the 
Company announced its intention to divest its properties in South Texas, Raton and the West Panhandle field and focus its efforts 
and capital resources to its Permian Basin assets. No assurance can be given that the sales will be completed in accordance with 
the Company's plans or on terms and at prices acceptable to the Company.

Permian Basin. In April 2017, the Company completed the sale of approximately 20,500 acres in the Martin County region 
of the Permian Basin, with net production of approximately 1,500 BOEPD, to an unaffiliated third party for cash proceeds of 
$264 million. The sale resulted in a gain of $194 million. In conjunction with the divestiture, the Company reduced the carrying 
value of goodwill by $2 million, reflecting the portion of the Company's goodwill related to the assets sold.

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 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. 

The Company will continue to review its acreage in the Permian Basin and negotiate with other operators in the area to sell 
or trade nonstrategic properties to achieve operating 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 and impairments. 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 planned 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 2017, the Company's significant purchasers of oil, NGLs and gas were Occidental Energy 
Marketing Inc. (24 percent), Sunoco Logistics Partners L.P. (14 percent) and Plains Marketing LP (10 percent). 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 the Company's 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, refining and export 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 and marketing derivatives to mitigate price 
risk  associated  with  buy  and  sell  marketing  arrangements  to  fulfill  firm  pipeline  transportation  commitments. 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 2017, 2016 and 2015, 
as well as the Company's open commodity derivative positions at December 31, 2017, and subsequent changes to those positions.

9

Competition, Markets and Regulations

PIONEER NATURAL RESOURCES COMPANY

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 
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"), 
the U.S. Occupational Safety and Health Administration (the "OSHA") 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, imposition of investigatory remedial 
or corrective action of obligations, the occurrence of delays or restrictions in permitting or the performance of projects and the 
issuance  of  orders  enjoining  the  Company  from  conducting  certain  operations  in  a  particular  area.  While  the  Company's 
environmental compliance costs have historically 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, or that new or more stringently applied laws and regulations will not 
materially increase the cost of doing business.

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 certain 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. There have been efforts from time to 
time to remove this exclusion, which removal 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, in response to a lawsuit filed by several non-governmental 

10

PIONEER NATURAL RESOURCES COMPANY

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 U.S. District Court for the District of Columbia in December 2016, whereby the EPA is required to propose no later than 
March 15, 2019, a rulemaking for the 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.

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.

See "Item 1A. Risk Factors - 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"  for  further  discussion  on 
environmental contamination issues.

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. 

The federal 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 June 2015, the EPA and the U.S. Army Corps of Engineers (the "Corps") published a final rule attempting to clarify the 
federal jurisdictional reach over waters of the United States, but legal challenges to this rule followed and the rule was stayed 
nationwide by the U.S. Sixth Circuit Court of Appeals in October 2015 pending resolution of the court challenges. In January 
2017, the U.S. Supreme Court accepted review of the rule to determine whether jurisdiction rests with the federal district or 
appellate courts. Additionally, following the issuance of a presidential executive order to review the rule, the EPA and the Corps 
proposed a rulemaking in June 2017 to repeal the June 2015 rule. The EPA and the Corps also announced their intent to issue a 
new rule defining the CWA's jurisdiction. On November 22, 2017, the EPA and the Corps published a proposed rule specifying 
that the contested June 2015 rule would not take effect until two years after the rule proposed on November 22, 2017 is finalized 
and published in the federal register. As a result, future implementation of the June 2015 rule is uncertain at this time. To the extent 
this rule or a revised rule expands the scope of the CWA's jurisdiction, the Company could face increased costs and delays with 
respect to obtaining permits for dredge and fill activities in wetland areas in connection with any expansion activities.

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 that are isolated from fresh water sources. The Underground 
Injection Control ("UIC") program established under the federal Safe Drinking Water Act ("SDWA") requires issuance of permits 
from the EPA or an analogous state agency for the construction and operation of disposal wells. Additionally, the UIC program 
establishes minimum standards for disposal well operations and restricts the types and quantities of fluids that may be disposed. 
Because some states have become concerned that the disposal of produced water into below ground formations could contribute 
to seismicity, they have adopted or are considering adopting additional regulations governing such disposal. Should future onerous 

11

PIONEER NATURAL RESOURCES COMPANY

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 - Pioneer's operations are substantially 
dependent on the availability of water and its ability to dispose of produced water gathered from drilling and production activities 
and restrictions on the Company's ability to obtain water or dispose of produced water may have a materially adverse effect on 
its financial condition, results of operations and cash flows" 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, in recent years, several federal, state and 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 chemicals 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 managed by the Ground Water 
Protection Council and the Interstate Oil and Gas Compact Commission. FracFocus provides the public access to Company-
reported information on the additives it uses in the hydraulic fracturing process on wells the Company operates. 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 materially and adversely affect the Company's production" for further discussion on hydraulic fracturing issues.

Air emissions. The federal 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 
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. Additionally, these legal requirements could impose stringent air permit conditions or 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 stringent environmental 
and oil and gas-related laws and regulations that could cause it to suspend or curtail its operations or expose it to material costs 
and liabilities" 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, and the potential physical effects of climate change could disrupt the Company's production 
and cause it to incur significant costs in preparing for or responding to those effects" 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. 

12

PIONEER NATURAL RESOURCES COMPANY

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 
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 Act and comparable state statutes. These laws and the related regulations issued by OSHA strictly govern the 
protection of the health and safety of employees. The OSHA hazard communication standard, the 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. 

Additionally, the Company's sand mining operations are subject to mining safety regulation. The U.S. Mining Safety and 
Health Administration ("MSHA") is the primary regulatory organization that regulates quarries, surface mines, underground mines 
and the industrial mineral processing facilities associated with and located at quarries and mines. 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.

OSHA  promulgated  new  rules  in  March  2016  for  workplace  exposure  to  respirable  silica  for  several  other  industries. 
Respirable silica is a known health hazard for workers exposed over long periods. The MSHA has been considering the adoption 
of similar rules. If any new rule issued by MSHA lowers the workplace exposure limit significantly, the Company could incur 
significant capital and operating expenditures for equipment to reduce this exposure.

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 the 
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 

13

 
PIONEER NATURAL RESOURCES COMPANY

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 million per day for each violation of the Natural Gas Act ("NGA"), the Natural Gas Policy Act of 1978 and 
related regulations. 

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 legislatures, 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 
with respect to rates or terms and conditions of service. 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 regulated, 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 

14

PIONEER NATURAL RESOURCES COMPANY

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 
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 million per violation per day, subject to annual inflation adjustment. 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 million per violation, subject to annual inflation adjustment, or triple the monetary gain to the person for each violation. See 
"Items 1A. Risk Factors - The Company's transportation of gas, 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."

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 materially and 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;

15

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

PIONEER NATURAL RESOURCES COMPANY

prices, and the U.S. Gulf Coast, where the majority of the U.S. refinery capacity exists;
volatility and trading patterns in the commodity-futures markets;
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, NGL 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,  development  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, availability and acceptance 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, 2017, 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 
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 materially and 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. 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 2018, the volumes of protected production for 2019 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 2019 and beyond may not be protected by derivative arrangements. 
In addition, the Company's derivatives arrangements may not achieve their intended strategic purposes.

Finally, 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.  Regulation  by  the  CFTC  and  banking  regulators  may  materially  and  adversely  affect  the  cost  and 

16

PIONEER NATURAL RESOURCES COMPANY

availability of derivatives, including by causing the Company's contract counterparties, which are generally financial institutions 
and other market participants, to curtail or cease their derivatives activities.

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;
construction delays;
fracture stimulation accidents or failures;
adverse weather conditions;
restricted access to land for drilling or laying pipelines;
title defects;
lack of available gathering, transportation, processing, fractionation, storage, refining or export 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 2018.

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

Significant or extended price declines could result in the Company having to make downward adjustments to the carrying 
value of its proved oil and gas properties. The Company performs assessments of its 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.
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 2017 the Company recognized an impairment 
charge of $285 million attributable to its Raton field in southeast Colorado, and in 2016 the Company recognized an impairment 
charge of $32 million attributable to its West Panhandle field assets in the panhandle region of Texas, 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.

17

PIONEER NATURAL RESOURCES COMPANY

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, 2017, the Company carried unproved oil and gas property costs of $558 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, 2017, the Company had a carrying value for goodwill of $270 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 materially and 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 
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.

18

 
PIONEER NATURAL RESOURCES COMPANY

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  NGL  and  gas  leaks,  oil  and  produced  water  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;
surface access restrictions;
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 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, 2017, the Company owned interests in 10 gas processing plants and four treating facilities. The Company 
is the operator of one of the gas processing plants and all four of the treating facilities. Nine of the gas processing plants are 
operated by third parties and one of the treating facilities is 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.

19

 
PIONEER NATURAL RESOURCES COMPANY

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 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, 2017 include proved undeveloped reserves and 
proved developed non-producing reserves of 45 MMBbls of oil, 22 MMBbls of NGLs and 291 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 materially and 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 materially and 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 material adverse effect on the Company's proved reserves, financial condition and results of 
operations.

A portion of the Company's total estimated proved reserves at December 31, 2017 were undeveloped, and those proved reserves 
may not ultimately be developed.

At December 31, 2017, approximately eight 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 future drilling activity; 
the absence of facility or equipment malfunctions; 
the absence of adverse weather effects; 
expectations of commodity prices, which could experience significant volatility;
expected well costs; and 
the assumed effects of regulation by governmental agencies, which could make certain drilling activities or production 
uneconomical. 

Should any of these assumptions prove inaccurate, or should the Company's development plans change, actual production 

could be materially and adversely affected. 

20

PIONEER NATURAL RESOURCES COMPANY

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, refining and export 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, refining and export 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, fractionation, refining or export facilities to the Company, especially 
in areas of planned expansion where such facilities do not currently exist.

 For example, following Hurricane Harvey in 2017 and Hurricanes Gustav and Ike in 2008, certain Permian Basin gas 
processors were forced to shut down their plants due to the inability of certain Texas Gulf Coast NGL fractionators to operate. 
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, storage, processing, fractionation, refining or export facilities, 
or lack of capacity at 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 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 a FERC-related 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 the Permian Basin of West Texas, an area 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;  such  concentration  also  makes  the  Company 
vulnerable to risks associated with operating in a limited geographic area.

The Company's producing properties are geographically concentrated in the Permian Basin of West Texas. At December 
31, 2017, 77 percent of the Company's total estimated proved reserves were attributable to properties located in this area. In 
addition, the Company's operations and drilling activity are concentrated in this area where industry activity is high. As a result, 
demand for personnel, equipment, power, services and resources has increased, as well as the costs for these items. Any delay or 
inability to secure the personnel, equipment, power, services and resources could result in oil, NGL 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. 

As a result of this concentration, the Company may be disproportionately exposed to the impact of delays or interruptions 
of operations or production in this area caused by external factors such as governmental regulation, state politics, market limitations, 
water or sand shortages or extreme weather related conditions.

21

PIONEER NATURAL RESOURCES COMPANY

Pioneer's operations are substantially dependent upon the availability of water and its ability to dispose of produced water 
gathered from drilling and production activities. Restrictions on the Company's ability to obtain water or dispose of produced 
water may have a material adverse effect on its financial condition, results of operations and cash flows.

Water is an essential component of both the drilling and hydraulic fracturing processes. Limitations or restrictions on the 
Company's ability to secure sufficient amounts of water (including limitations resulting from natural causes such as drought), 
could materially and adversely impact its operations. Severe drought conditions can result in local water districts taking steps to 
restrict the use of water in their jurisdiction for drilling and hydraulic fracturing in order to protect the local water supply. If the 
Company is unable to obtain water to use in its operations from local sources, it may need to be obtained from new sources and 
transported to drilling sites, resulting in increased costs, which could have a material adverse effect on its financial condition, 
results of operations and cash flows.

In addition, the Company must dispose of the fluids produced from oil and gas production operations, including produced 
water, which it does directly or through the use of third party vendors. The legal requirements related to the disposal of produced 
water into a non-producing geologic formation by means of underground injection wells are subject to change based on concerns 
of the public or governmental authorities regarding such disposal activities. One such concern arises from recent seismic events 
near underground disposal wells that are used for the disposal by injection of produced water resulting from oil and gas activities. 
In March 2016, the United States Geological Survey identified Texas and Colorado as being among the states with areas of increased 
rates of induced seismicity that could be attributed to fluid injection or oil and gas extraction. In response 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 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. 

States may issue orders to temporarily shut down or to curtail the injection depth of existing wells in the vicinity of seismic 
events. Another consequence of seismic events may be lawsuits alleging 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 limit or prohibit 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 into disposal wells, which events could have a material adverse effect on the Company's business, financial condition 
and results of operations.

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 materially and adversely affect the Company's results 
of operations.

Absent an expansion of U.S. refining and export 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 export capacity expansions, transportation and 
other costs. In such circumstances, the returns on the Company's capital projects would decline, possibly to levels that would make 

22

PIONEER NATURAL RESOURCES COMPANY

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 stringent environmental and oil and gas-related laws and regulations that could cause 
it to suspend or curtail its operations or expose it to material costs and liabilities.

The Company's operations are subject to stringent federal, state and local laws and regulations governing, among other 
things, the drilling of wells, developing rates of production, the size and shape of drilling and spacing units or proration units, the 
transportation and sale of oil, NGLs and gas, and the discharging of materials into the environment and environmental protection. 
In connection with its operations, the Company must obtain and maintain numerous environmental and oil and gas-related permits, 
approvals, and certificates from various federal, state and local governmental authorities, and may incur substantial costs in doing 
so. The need to obtain permits has the potential to delay the development of oil and gas projects. Over the next several years, the 
Company may be charged royalties on gas emissions or required to incur certain capital expenditures for air pollution control 
equipment or other air emissions-related issues. For 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 standards to provide protection of public health and welfare. In November 2017, the EPA published a final rule that issued 
area  designations  with  respect  to  ground-level  ozone  for  approximately  85%  of  the  U.S.  counties  as  either  "attainment/
unclassifiable" or "unclassifiable" but has not yet issued non-attainment designations for the remaining areas of the U.S. not 
addressed under the November 2017 final rule. Reclassification of areas or imposition of more stringent standards may make it 
more difficult to construct new or modify air pollution control systems to reduce or eliminate 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. In another example, in June 2016, the EPA published a final rule updating federal 
permitting regulations for stationary sources in the oil and gas industry by defining and clarifying the meaning of the term "adjacent" 
for determining when separate surface sites and the equipment at those sites will be aggregated for permitting purposes. 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, any one or more 
of which developments could have a material adverse effect on the Company's business, financial condition and results of operations. 

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 materially 
and 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, NGL and 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, and in the past has owned, leased 
or operated, 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, or on or under other locations, 
including  off-site  locations,  where  such  substances  have  been  taken  for  treatment  or  disposal. These  wastes,  substances  and 
hydrocarbons may also be released during future operations. In addition, some of the Company's 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. 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. Such properties and the substances disposed 
or released on or under them may be subject to CERCLA, RCRA and analogous state laws, which could require the Company to 

23

PIONEER NATURAL RESOURCES COMPANY

remove previously disposed substances, wastes and petroleum hydrocarbons, remediate contaminated property or perform remedial 
plugging or pit closure operations to prevent future contamination, the costs of which could have a material adverse effect on the 
Company's business, financial condition and results of operations.

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. 

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 and the potential physical effects of climate change 
could disrupt the Company's production and cause the Company to incur significant costs in preparing for or responding to 
those effects.

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 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 a final rule establishing New Source Performance Standards, known as Subpart 
OOOOa, that require certain new, modified or reconstructed facilities in the oil and gas sector to reduce certain methane gas and 
volatile  organic  compound  emissions. These  Subpart  OOOOa  standards  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. However, in June 2017, the EPA published a proposed rule to stay certain portions of these Subpart OOOOa standards 
for two years and revisit the entirety of the 2016 standard, but has not yet published a final rule. As a result, future implementation 
of the 2016 standards is uncertain at this time. Furthermore, with respect to a final rule published by the BLM in November 2016 
and imposing requirements to reduce methane emissions from venting, flaring and leaking on public lands, the BLM has since 
published a proposed rulemaking in October 2017 that would temporarily suspend certain requirements contained in the November 
2016 final rule until January 17, 2019, but the October 2017 rulemaking has not yet been finalized.

At the state level, some states are considering and other states, including Colorado, where the Company conducts operations, 
have issued requirements for the performance of leak detection programs that identify and repair methane leaks at certain oil and 
gas sources. State rules may be more stringent than federal rules. Compliance with the EPA's June 2016, the BLM's November 
2016 rule or with any future federal or state methane regulations could, among other things, require installation of new emission 
controls on some of the Company's equipment and significantly increase the Company's capital expenditures and operating costs.

Internationally, 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. In August 2017, the U.S. State 
Department officially informed the United Nations of the United States' intention to withdraw from the Paris agreement. The Paris 
agreement provides for a four-year exit process beginning when it took effect in November 2016, which would result in an effective 
exit date of November 2020. The United States' adherence to the exit process and/or the terms on which the United States may 
re-enter the Paris agreement or a separately negotiated agreement are unclear at this time.

The adoption and implementation of any federal or state legislation or regulations or international agreements 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, including the imposition of a carbon tax, any of which could 
have a material adverse effect on the Company's business, financial condition and results of operations. Moreover, such new 

24

PIONEER NATURAL RESOURCES COMPANY

legislation or regulatory programs as well as conservation plans and efforts undertaken in response to climate change could also 
materially and adversely affect demand for the oil, NGLs 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 material. In addition, 
recent non-governmental activism directed at shifting funding away from companies with energy-related assets could result in 
limitations or restrictions on certain sources of funding for the energy sector.

Finally,  it  should  be  noted  that  some  scientists  have  concluded  that  increasing  concentrations  of  GHGs  in  the  Earth's 
atmosphere may produce climate changes that have significant physical effects, such as increased frequency and severity of storms, 
floods, droughts and other extreme climatic events. If any such effects were to occur, they could have a material adverse effect 
on the Company's exploration and production operations.

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 materially 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 in recent years, 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, the EPA has 
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. 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 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. However, with respect to this BLM rule, a Wyoming federal judge struck down this rule in June 2016, finding that the BLM 
lacked congressional authority to promulgate the rule, the BLM appealed the decision in July 2017, the appellate court issued a 
ruling in September 2017 to vacate the Wyoming trial court decision and dismiss the lawsuit challenging the 2015 rule in response 
to the BLM's issuance of a proposed rulemaking to rescind the 2015 rule and, on December 29, 2017, the BLM published a final 
rule rescinding the March 2017 rule.

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 additives 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. Also, local 
land use restrictions, such as city ordinances, may restrict or prohibit drilling in general or hydraulic fracturing in particular although 
in May 2015 in response to one city in Texas voting to ban hydraulic fracturing within city limits the Texas Legislature adopted 
Texas House Bill 40, which provides that the regulation of oil and gas operations in Texas is under the exclusive jurisdiction of 
the state and preempted local regulation of those operations. Despite Texas House Bill 40, municipalities and political subdivisions 
in Texas continue to 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 

25

PIONEER NATURAL RESOURCES COMPANY

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 a material adverse effect on the Company's ability to develop and produce reserves. 

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. 
In addition, from time to time, the Company enters into arrangements and transactions that can give rise to material off-balance 
sheet obligations, including firm purchase, transportation and fractionation commitments, gathering, processing and transportation 
commitments on uncertain volumes of future throughput, operating lease agreements and drilling commitments. The Company's 
financial commitments could have important consequences to its business including, but not limited to, the following:

• 

• 
• 
• 
• 

the incurrence of charges associated with unused commitments if future events do not meet the Company's expectations 
at the time such commitments are entered into;
increasing its vulnerability to adverse economic and industry conditions;
limiting its flexibility to plan for, or react to, changes in its business and industry;
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, 2017 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 materially and 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 transportation of gas, 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.

The 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 transportation of gas in interstate commerce, 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 

26

PIONEER NATURAL RESOURCES COMPANY

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:

• 
• 
• 
• 
• 
• 

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  development  costs,  operating  costs,  severance,  ad  valorem  and  excise  taxes, 
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 materially and adversely 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 
27

PIONEER NATURAL RESOURCES COMPANY

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.  The  Company  relies  extensively  on  information 
technology systems, including Internet sites, computer software, data hosting facilities and other hardware and platforms, some 
of which are hosted by third parties, to assist in conducting its business. The Company's technologies systems and networks, and 
those of its business associates may become the target of cybersecurity attacks, including without limitation malicious software, 
attempts to gain unauthorized access to data and systems, and other electronic security breaches that could lead to disruptions in 
critical systems and materially and adversely affect the Company in a variety of ways, including the following:

• 

• 

• 

• 

• 

unauthorized  access  to  and  release  of  seismic  data,  reserves  information,  strategic  information  or  other  sensitive  or 
proprietary information, which could have a material adverse effect on the Company's ability to compete for oil and gas 
resources;
data corruption or operational disruption of production infrastructure, which could result in loss of production or accidental 
discharge;
unauthorized access to and release of personal identifying information of royalty owners, employees and vendors, which 
could expose the Company to allegations that it did not sufficiently protect that information;
a cybersecurity attack on a vendor or service provider, which could result in supply chain disruptions and could delay or 
halt operations; and 
a cybersecurity attack on third-party gathering, transportation, processing, fractionation, refining or export facilities, 
which could delay or prevent the Company from transporting and marketing its production, resulting in a loss of revenues.

These events could damage the Company's reputation and lead to financial losses from remedial actions, loss of business 
or potential liability. Additionally, certain cyber incidents, such as surveillance, may remain undetected for an extended period. 
As cyber threats continue to evolve, the Company may be required to expend significant additional resources to continue to modify 
or enhance its protective measures or to investigate and remediate any information security vulnerabilities.

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

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 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 2016, the economies in the United States and certain countries in Europe and Asia have continued to stabilize with 
resulting improvements in industrial demand and consumer confidence. However, other economies, such as those of certain South 
American nations, continue to face economic struggles or slowing economic growth. If these conditions worsen, combined with 
a decline in economic growth in other parts of the world, 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.

The Company's use of seismic data is subject to interpretation and may not accurately identify the presence of oil and gas, 
which could materially and 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 economic. In addition, 

28

PIONEER NATURAL RESOURCES COMPANY

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  a  material  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 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.

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 materially and 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 materially and 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 SEC and CFTC's rulemaking remains uncertain. Regulatory agendas that were released in late 2017 
indicated that the SEC and CFTC plan to pursue fewer rulemaking items than in prior years. For example, the CFTC announced 
its intent to take action on an agency-wide internal review focused on simplifying and modernizing CFTC rules, regulations and 
practices and focus on streamlining the implementation of existing regulations and practices. Although the SEC and the CFTC's 
agendas are less expansive than they have been in the past, wholesale deregulation of the markets will not necessarily be the 
outcome. For example, the CFTC plans to take a new look at passing rules on position limits for certain futures contracts, and the 
SEC intends to re-propose rules for "plain vanilla" exchange-traded funds and add amendments to the Volcker Rule.

29

PIONEER NATURAL RESOURCES COMPANY

Moreover, regulation by the CFTC and banking regulators of the over-the-counter derivatives market and market participants 
could cause the Company's contract counterparties, which are generally financial institutions and other market participants, to 
curtail or cease their derivatives activities, which could materially and adversely affect the cost and availability of derivatives to 
the Company.

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.

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.

30

PIONEER NATURAL RESOURCES COMPANY

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. 
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 materially and 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 MSHA, 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, mining and other permits and 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. 

31

PIONEER NATURAL RESOURCES COMPANY

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 
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. 

Pioneer Sands LLC ("Pioneer Sands"), 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 Pioneer Sands or its commercial customers alleging damages caused by silica exposure. As of December 31, 2017, Pioneer 
Sands was the subject of silica exposure claims from 19 plaintiffs. Almost all of the claims pending against Pioneer Sands arise 
out of the alleged use of Pioneer Sands' sand products in foundries or as an abrasive blast media and have been filed in the states 
of Texas, Mississippi and Alabama, although some cases have been brought in other jurisdictions over the years. 

It is possible that Pioneer Sands 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, 2017, 2016 and 2015 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.

Corporate Reserves is responsible for the management of the oil and gas proved reserve estimation processes in each of 
the Company's Permian Basin, South Texas, Raton and West Panhandle asset areas. Corporate Reserves is 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 oversight of the reservoir engineers by the Director of Corporate 
Reserves 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 reserve estimates are prepared by reservoir engineers before being submitted to the 
Director and Vice President of 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 

32

PIONEER NATURAL RESOURCES COMPANY

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 its staff 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, 2017, 2016 and 
2015, in the aggregate, represented 77 percent, 77 percent and 82 percent of the Company's year-end 2017, 2016 and 2015 proved 
reserves, respectively; and 91 percent, 93 percent and 97 percent of the Company's year-end 2017, 2016 and 2015 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 

33

PIONEER NATURAL RESOURCES COMPANY

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 who 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 40 years of experience 
as a petroleum engineer, with 33 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.

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 39 years of practical experience in petroleum 
engineering, including over 36 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.

34

Proved Reserves

PIONEER NATURAL RESOURCES COMPANY

As of December 31, 2017, 2016 and 2015, 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, 2017, 2016 and 2015:

Summary of Oil and Gas Proved Reserves as of Fiscal Year-End
Based on Average Fiscal-Year Prices
Proved Reserve Volumes
Gas
(MMcf) (a)

Total
(MBOE)

NGLs
(MBbls)

Oil
(MBbls)

%

December 31, 2017:
Developed
Undeveloped

Total proved reserves

December 31, 2016:
Developed
Undeveloped

Total proved reserves

December 31, 2015:
Developed
Undeveloped

Total proved reserves

 _____________________

442,364
40,525
482,889

189,434
21,063
210,497

1,629,451
122,429
1,751,880

903,373
81,993
985,366

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

92%
8%
100%

93%
7%
100%

89%
11%
100%

(a)  Total proved gas reserves contain 171,623 MMcf, 137,853 MMcf and 144,955 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, 2017, 2016 and 2015, respectively.

The  Company's  Standardized  Measure  of  total  proved  reserves  as  of  December  31,  2017  was  $8.2  billion,  including 
$7.7 billion  and  $443  million  related  to  proved  developed  and  proved  undeveloped  reserves,  respectively. The  Standardized 
Measure of total proved reserves as of December 31, 2017 includes the reduction of the federal corporate income tax rate to 21 
percent associated with the enactment of the Tax Cut and Jobs Act. 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. 

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.

35

 
 
 
Description of Properties

PIONEER NATURAL RESOURCES COMPANY

The following tables summarize the Company's development and exploration/extension drilling activities during 2017:

Permian Basin
South Texas—Eagle Ford Shale
South Texas—Other

Total

Permian Basin
South Texas—Eagle Ford Shale
West Panhandle

Total

Beginning
Wells In 
Progress

Development Drilling

Wells
Spud

Successful
Wells

Ending
Wells In
Progress

8
4
—
12

22
1
5
28

16
5
5
26

14
—
—
14

Beginning
Wells In
Progress

119
14
—
133

Exploration/Extension Drilling

Wells
Spud

Successful
Wells

Unsuccessful
Wells

214
10
3
227

207
15
—
222

1
1
—
2

Ending
Wells In
Progress

125
8
3
136

The following table summarizes the Company's average daily oil, NGL, gas and total production by asset area during 2017:

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

_____________________

Oil (Bbls)

NGLs (Bbls)

147,641
7,754
—
1,669
1,502
5
158,571

44,099
7,141
—
3,490
277
1
55,008

Gas (Mcf) (a)
194,904
44,039
88,497
7,484
17,531
52
352,507

Total (BOE)

224,224
22,235
14,750
6,407
4,700
14
272,330

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

36

 
 
 
 
The following table summarizes the Company's costs incurred by asset area during 2017:

PIONEER NATURAL RESOURCES COMPANY

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

$

$

8
—
—
—
—
—
8

$

$

128
—
—
—
—
—
128

$

$

1,950
74
1
2
—
4
2,031

$

579
37
6
10
15
—

(17) $
(4)
5
(4)
3
—
(17) $

2,648
107
12
8
18
4
2,797

$

647   $

(in millions)
$

Permian Basin. 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 750,000 gross acres (660,000 net acres). Pioneer's interests in the northern 
portion of the play comprise approximately 550,000 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 from 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 7,500 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 2017, the Company successfully completed 183 horizontal wells in the northern portion of the play and 40 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 35 percent were Wolfcamp A interval wells and approximately 
15 percent were Lower Spraberry Shale interval wells. The majority of the wells placed on production in the southern portion of 
the play were Wolfcamp B interval wells. In addition, during 2017, the Company completed acreage trades that allow the Company 
to drill wells with longer laterals, improving the expected returns of the wells. The Company estimates that the acreage trades 
completed in 2017 added approximately 7.2 million lateral feet to the Company's drilling inventory.

The Company plans to operate 20 rigs in the Spraberry/Wolfcamp field in 2018, with 16 rigs operating in the northern 
portion of the play and four rigs operating in the southern portion of the play. During 2018, the Company expects to place on 
production between 250 and 275 horizontal wells (200 to 225 horizontal wells in the northern portion of the play and approximately 
50 horizontal wells in the southern portion of the play). Approximately 60 percent of the horizontal wells are planned to be drilled 
in the Wolfcamp B interval, 25 percent in the Wolfcamp A interval and the remaining 15 percent will be a combination of wells 
in the Spraberry Shale intervals (Jo Mill, Lower Spraberry and Middle Spraberry) and a limited appraisal program for the Clearfork 
and Wolfcamp D intervals. The Company's 2018 appraisal program includes appraising: (i) its first Clearfork horizontal well 
(located  in  Midland  County),  (ii)  seven  wells  in  the  Jo  Mill  and  Middle  Spraberry  intervals  in  conjunction  with  nine  Lower 
Spraberry Shale wells to determine an optimal development strategy for the Spraberry formation (these appraisals will test different 
spacing, staggering, sequencing, and completion design) and (iii) three Wolfcamp D interval wells.

The Company expects to spend $2.6 billion in the Spraberry/Wolfcamp field during 2018, including $2.0 billion of horizontal 
drilling and completion capital, $300 million for tank battery and disposal facilities, $170 million for gas processing facilities and 
$110 million for land, science and other costs. 

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 2018 drilling activities will 
be supported by seven 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. The 2018 capital budget includes $78 million for upgrades 
and maintenance to the Company's pressure pumping and well service equipment.

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. In addition, Pioneer 
has signed a contract for its initial offtake of sand sourced in West Texas where significant new sand supplies are expected to be 

37

 
 
 
 
 
 
PIONEER NATURAL RESOURCES COMPANY

available in 2018. The Company is evaluating additional contracts for lower cost sand sourced in West Texas. As a result of the 
expected supply growth of West Texas sand, the planned expansion of the Company’s sand mine at Brady, Texas has been deferred.

In addition to the efficiencies from the Company's integrated services, the Company has been and continues to pursue 
initiatives to improve drilling and completion efficiencies and reduce costs. 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, pipeline takeaway capacity 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 secure adequate supplies of non-potable water to support the Company's long-term growth plan for the Spraberry/
Wolfcamp field. Over the past few years, the Company has expanded its mainline system, subsystems and frac ponds to efficiently 
deliver water to many of Pioneer's drilling locations. The Company is purchasing approximately 120 thousand barrels per day of 
effluent water from the City of Odessa and has 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. Once the Midland plant upgrade is complete, 
the Company expects to 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. During 2018, the Company expects to spend approximately 
$135 million to begin the Midland plant upgrade construction and build additional subsystems, frac ponds and produced water 
reuse facilities.

South Texas Eagle Ford Shale. During 2017, the Company operated two rigs in the Eagle Ford Shale area and drilled 11
new Eagle Ford Shale wells. The objective of this drilling program was to test longer laterals with wider spacing and higher 
intensity completions in the new wells. The Company's 2017 completions included 25 wells in South Texas, comprising 11 new 
Eagle Ford Shale wells and nine wells that were drilled but not completed in 2016, as well as five oil wells in the Wilcox formation 
that were drilled and placed on production during 2017.

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

Data" for additional information about the Company's plan to sell its South Texas assets.

Raton Basin. The Raton Basin properties are located in the southeast portion of Colorado. The Company owns approximately 
180,000 gross acres (165,000 net acres) in the center of the Raton Basin and produces coal bed methane gas from the coal seams 
in the Vermejo and Raton formations from approximately 2,200 wells. 

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

Data" for additional information about the Company's plan to sell its Raton Basin assets.

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 approximately 240,000 gross and net acres covering approximately 375 square miles. 

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

Data" for additional information about the Company's plan to sell its West Panhandle assets.

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 2017, 2016 and 2015 to reduce the carrying value 
of the Company's properties in the Raton, West Panhandle, South Texas - Eagle Ford Shale and South Texas - Other fields.

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, 2017, 2016 and 2015. 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.

38

PIONEER NATURAL RESOURCES COMPANY

The following tables set forth production, price and cost data with respect to the Company's properties for 2017, 2016 and 
2015. These amounts represent the Company's historical results of 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.

39

PIONEER NATURAL RESOURCES COMPANY

PRODUCTION, PRICE AND COST DATA

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

Year Ended December 31, 2017

Spraberry/
Wolfcamp
Field

Eagle Ford 
Shale Field

Raton
Field

Total Company 
Fields

53,889
16,096
71,140
81,842

147,641
44,099
194,904
224,224

48.32
18.69
2.45
37.62

4.36
0.19
(0.63)
0.87
4.79

0.58
1.81
2.39
15.34

$
$
$
$

$

$

$

$
$

$
$
$
$

$

$

$

$
$

2,830
2,607
16,074
8,116

7,754
7,141
44,039
22,235

47.78
19.39
3.06
28.95

4.56
6.26
(0.03)
0.56
11.35

0.41
0.72
1.13
8.79

$
$
$
$

$

$

$

$
$

—
—
32,302
5,384

—
—
88,497
14,750

— $
— $
$
$

2.74
16.47

5.92
2.21
2.03
0.47
10.63

0.54
0.15
0.69
2.44

$

$

$

$
$

57,878
20,078
128,665
99,401

158,571
55,008
352,507
272,330

48.24
19.31
2.63
35.39

4.58
0.85
(0.28)
0.80
5.95

0.57
1.59
2.16
13.61

40

 
 
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
Total
Depletion expense

Year Ended December 31, 2016

Spraberry/
Wolfcamp
Field

Eagle Ford 
Shale Field

Raton
Field

Total Company 
Fields

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

41

 
 
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/
Wolfcamp
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.

42

  
  
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, 2017:

PRODUCTIVE WELLS

Oil

6,905

Gross Productive Wells
Gas

Total

Oil

Net Productive Wells
Gas

Total

3,679

10,584

6,146

3,150

9,296

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

leasehold acreage as of December 31, 2017:

LEASEHOLD ACREAGE

Developed Acreage

Undeveloped Acreage

Gross Acres

Net Acres

Gross Acres

Net Acres

Royalty Acreage

1,315,707

1,132,711

111,627

104,894

241,133

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

December 31, 2017:

2018
2019
2020
2021
2022
Thereafter
Total

Acres Expiring (a)

Gross

Net

87,718
8,031
1,950
1,487
—
12,441
111,627

84,683
6,630
1,320
1,072
—
11,189
104,894

 _____________________

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

Of the 91,313 net acres expiring in 2018 and 2019, 60,485 net acres (66 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.

43

 
 
 
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 2017, 2016 and 2015 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.

Productive wells:
Development
Exploratory

Dry holes:

Development
Exploratory

Total
Success ratio (a)

DRILLING ACTIVITIES

Gross Wells

Net Wells

Year Ended December 31,

Year Ended December 31,

2017

2016

2015

2017

2016

2015

26
222

—
2
250
99%

39
215

—
—
254
100%

116
218

—
2
336
99%

20
198

—
1
219
99%

32
194

—
—
226
100%

78
151

—
1
230
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, 2017:

Development
Exploratory
Total

ITEM 3.

LEGAL PROCEEDINGS

Gross Wells
14
136
150

Net Wells

12
123
135

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.

44

 
 
 
EXECUTIVE OFFICERS OF THE REGISTRANT

PIONEER NATURAL RESOURCES COMPANY

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

Timothy L. Dove
Mark S. Berg
Chris J. Cheatwood
Richard P. Dealy
J.D. Hall
Kenneth H. Sheffield, Jr.
William F. Hannes
Frank E. Hopkins
Mark H. Kleinman
Teresa A. Fairbrook
Margaret M. Montemayor
Stephanie D. Stewart

Timothy L. Dove 

Position

President and Chief Executive Officer
Executive Vice President, Corporate/Vertically Integrated Operations
Executive Vice President and Chief Technology Officer
Executive Vice President and Chief Financial Officer
Executive Vice President, Permian Operations
Executive Vice President, Operations/Engineering/Facilities
Senior Vice President, Special Projects
Senior Vice President, Investor Relations
Senior Vice President and General Counsel
Vice President and Chief Human Resources Officer
Vice President and Chief Accounting Officer
Vice President and Chief Information Officer

Age
61
59
57
51
52
57
58
69
56
44
40
49

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 
Energy Partners L.P. ("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.

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/Vertically  Integrated  Operations  in  May  2017.  Mr.  Berg  had  previously  served  as  Executive Vice 
President, Corporate/Operations since August 2015 and 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 and Chief Technology Officer in May 2017. Mr. 
Cheatwood  had  previously  served  the  Company  as  Executive  Vice  President,  Business  Development  and  Geoscience  since 
November 2011, Executive Vice President, Business Development and Technology from February 2010 until November 2011, 
Executive Vice President, Geoscience from November 2007 until February 2010, Executive Vice President - Worldwide Exploration 
from January 2002 until November 2007, Senior Vice President - Worldwide Exploration from December 2000 to January 2002 
and 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 

45

PIONEER NATURAL RESOURCES COMPANY

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, Operations/Engineering/Facilities in May 2017. Mr. Sheffield has 
previously served the Company in a number of executive positions, including Executive Vice President, STAT (the Company's 
South Texas Asset Team), WAT (the Company's Western Asset Team) and Corporate Engineering from August 2015 to May 2017, 
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.

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,  Executive Vice 
President,  Southern  Wolfcamp  Operations  from  February  2013  until  August  2014,  Executive  Vice  President,  South  Texas 
Operations from February 2010 until February 2013, Executive Vice President, Business Development from December 2007 until 
February 2010, Executive Vice President, Worldwide Business Development from November 2005 until December 2007 and 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.

46

Mark H. Kleinman

PIONEER NATURAL RESOURCES COMPANY

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. 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.

47

 
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, 2017 and 2016. 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. In February 2018, the Board (i) declared a cash dividend of $0.16 per share on Pioneer’s outstanding 
common stock, payable April 12, 2018 to stockholders of record at the close of business on March 29, 2018 and (ii) approved a 
common stock repurchase program to offset the impact of dilution associated with annual employee stock awards. The stock 
repurchase program allows for up to $100 million of common stock to be repurchased during 2018.

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, 2017 and 2016:

Year ended December 31, 2017

Fourth quarter
Third quarter
Second quarter
First quarter

Year ended December 31, 2016

Fourth quarter
Third quarter
Second quarter
First quarter

High

Low

Dividends
Declared
Per Share

$
$
$
$

$
$
$
$

174.59
166.29
192.93
199.83

195.00
190.94
171.88
145.87

$
$
$
$

$
$
$
$

140.31
125.46
153.42
168.13

166.50
147.21
136.97
103.50

$
$
$
$

$
$
$
$

—
0.04
—
0.04

—
0.04
—
0.04

On February 14, 2018, the last reported sales price of the Company's common stock, as reported in the NYSE composite 

transactions, was $179.50 per share.

As of February 14, 2018, the Company's common stock was held by 10,633 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, 2017.

Period
October 2017
November 2017
December 2017
Total

_____________________

Total Number of
Shares Purchased (a)

Average Price
Paid per Share

— $
— $
$
174
$
174

—
—
156.58
156.58

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
—
—
—
—

—
—
—
— $

(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. 

48

ITEM 6.

SELECTED FINANCIAL DATA

PIONEER NATURAL RESOURCES COMPANY

The following selected consolidated financial data of the Company as of and for each of the five years ended December 
31, 2017 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

______________________

2017

Year Ended December 31,

2014
2015
2016
(in millions, except per share data)

2013

$

$

$

$

$

$

$

$

$

$

$

$

$

$

3,518

5,455

5,146

833

$

$

$

$

— $

833

$

2,418

3,382

$

$

4,341
$
(556) $
— $
(556) $

2,178

4,561

$

$

4,982
$
(266) $
(7) $
(273) $

3,599

4,954

3,357

$

$

$

$
1,041
(111) $
$
930

4.86

4.85

4.86

4.85

0.08

17,003

3,596

11,279

$

$

$

$

$

$

$

$

(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

12,272

4,426

6,615

(a)  Includes revisions to present certain of the Company's purchased oil and gas and sales of purchased oil and gas on a net 
basis within purchased oil and gas expense. See Note B of Notes to Consolidated Financial Statements included in "Item 
8. Financial Statements and Supplementary Data" for more information about the revision of the Company's revenues and 
expenses associated with these transactions.

(b)  During 2017, 2016, 2015 and 2013, the Company recognized impairment charges of $285 million related to dry gas properties 
in the Raton field, $32 million related to oil and gas properties in the West Panhandle field, $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. 

(c)  The Company recognized impairment charges of (i) $305 million attributable to its Hugoton assets, its Barnett Shale assets 
and Pioneer Alaska in 2014 and (ii) $729 million attributable to its Barnett Shale assets and Pioneer Alaska in 2013. The 
results of these operations are classified as discontinued operations in accordance with GAAP. 

49

 
 
 
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 2017 included the following highlights:

• 

Net income attributable to common stockholders was $833 million ($4.85 per diluted share) for the year ended December 
31, 2017, as compared to a net loss of $556 million ($3.34 per diluted share) in 2016. The primary components of the 
$1,389 million increase in earnings attributable to common stockholders include:

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

a $1.1 billion increase in oil and gas revenues as a result a 25 percent increase in average realized commodity prices 
per BOE, combined with a 16 percent increase in sales volumes;

a $206 million increase in net gains on disposition of assets, primarily due to recognizing a gain of $194 million on 
the sale of approximately 20,500 acres in the Martin County region of the Permian Basin during 2017;

a $121 million increase in the Company's income tax benefit, primarily as a result of a reduction in deferred tax 
liabilities related to the reduction in the federal corporate income tax rate beginning in 2018;

an $80 million decrease in DD&A expense, primarily attributable to (i) commodity price increases and the Company's 
cost reduction initiatives, both of which had the effect of adding proved reserves by lengthening the economic lives 
of the Company's producing wells and (ii) additions to proved reserves attributable to the Company's successful 
Spraberry/Wolfcamp horizontal drilling program; 

a $61 million decrease in net derivative losses, primarily as a result of changes in forward commodity prices, the 
cash settlement of derivative positions in accordance with their terms and changes in the Company's portfolio of 
derivatives;

a $54 million decrease in interest expense, primarily due to the repayment of both the Company's 6.65% senior notes, 
which matured in March 2017, and the Company's 5.875% senior notes, which matured in July 2016;

a $44 million decrease in other expense, primarily related to reductions in idle drilling and well service equipment 
charges and net losses from Company-provided fracture stimulation and related service operations that are provided 
to third party working interest owners, partially offset by an increase in unused firm transportation costs;

a $33 million decrease in losses associated with purchases and sales of oil and gas used to fulfill transportation 
commitments;

a $21 million increase in interest and other income, primarily due to interest received from the Company's short-
term and long-term investments and severance tax refunds; and

a $13 million decrease in exploration and abandonment charges, primarily due to writing off the Company's unproved 
acreage in Alaska during 2016 when it was determined that it was no longer expected to be developed; partially offset 
by 

a $253 million increase in impairment charges, principally related to the impairment charge recorded in 2017 to 
reduce the carrying value of the Company's Raton field; and

an $89 million increase in total oil and gas production costs and production and ad valorem taxes as of a result of 
the aforementioned increases in commodity prices and sales volumes.

• 

• 

• 

During 2017, average daily sales volumes increased on a BOE basis by 16 percent to 272,330 BOEPD, as compared to 
233,842 BOEPD during 2016, primarily due to the Company's successful Spraberry/Wolfcamp horizontal drilling program.

Average oil, NGL and gas prices increased during 2017 to $48.24 per Bbl, $19.31 per Bbl and $2.63 per Mcf, respectively, 
as compared to $39.65 per Bbl, $13.49 per Bbl and $2.11 per Mcf, respectively in 2016. 

Net cash provided by operating activities increased by 39 percent to $2.1 billion for 2017, as compared to $1.5 billion during 
2016, primarily due to increases in the Company's oil and gas revenues in 2017 as a result of increases in commodity prices 
and sales volumes, partially offset by a $613 million reduction in cash provided by commodity derivatives.

First Quarter 2018 Outlook

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

March 31, 2018:

Production is forecasted to average 304,000 to 314,000 BOEPD. 

50

PIONEER NATURAL RESOURCES COMPANY

Production costs (including production and ad valorem taxes and transportation costs) are expected to average $7.00 to 
$9.00 per BOE, based on current NYMEX strip commodity prices. DD&A expense is expected to average $12.50 to $14.50 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 $33 million to $38 million, and other expense is 
expected to be $60 million to $70 million, including $45 million to $55 million of charges associated with excess firm gathering 
and transportation commitments. 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 21 percent to 25 percent, reflecting the lower federal 

corporate income tax rate enacted by the Tax Cuts and Jobs Act. Cash income taxes are expected to be less than $5 million.

2018 Capital Budget

Pioneer's capital budget for 2018 totals $2.9 billion, consisting of $2.6 billion for drilling and completion related activities, 
including  additional  tank  batteries,  saltwater  disposal  facilities  and  gas  processing  facilities,  and  $260  million  for  water 
infrastructure, vertical integration, field facilities and vehicles. The 2018 capital budget excludes acquisitions, asset retirement 
obligations, capitalized interest, geological and geophysical general and administrative expense and information technology system 
upgrades. 

The 2018 drilling and completion capital of $2.6 billion is focused on oil drilling, with approximately 99 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 - $2.6 billion, including (i) $2.0 billion of horizontal drilling capital, (ii) $300 million for 
infrastructure (additional tank batteries and saltwater disposal facilities), (iii) $170 million for gas processing facilities 
and (iv) $110 million of land, science and other expenditures; and

•  Other assets - $20 million. 

The 2018 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, proceeds from planned asset divestitures or borrowings 
under the Company's credit facility.

 Acquisitions

During 2017, 2016 and 2015, the Company spent $136 million, $446 million and $36 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. 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

In February 2018, the Company announced its intention to divest its properties in South Texas, Raton and the West Panhandle 
field and focus its efforts and capital resources to its Permian Basin assets. No assurance can be given that the sales will be 
completed in accordance with the Company's plans or on terms and at prices acceptable to the Company.

In April 2017, the Company completed the sale of approximately 20,500 acres in the Martin County region of the Permian 
Basin, with net production of approximately1,500 BOEPD, to an unaffiliated third party for cash proceeds of $264 million. The 
sale resulted in a gain of $194 million. In conjunction with the divestiture, the Company reduced the carrying value of goodwill 
by $2 million, reflecting the portion of the Company's goodwill related to the assets sold.

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. 

See  Notes  C,  D  and  Q  of  Notes  to  Consolidated  Financial  Statements  included  in  "Item  8.  Financial  Statements  and 
Supplementary Data" for additional information about the Company's divestitures in 2017 and 2015 and it's planned divestitures 
of South Texas, Raton and the West Panhandle field.

51

Results of Operations

PIONEER NATURAL RESOURCES COMPANY

Oil and gas revenues. Oil and gas revenues totaled $3.5 billion, $2.4 billion and $2.2 billion during 2017, 2016 and 2015, 

respectively.

The increase in 2017 oil and gas revenues relative to 2016 is primarily due to increases of 19 percent, 26 percent and 4 
percent in oil, NGL and gas sales volumes, respectively, and increases of 22 percent, 43 percent and 25 percent in oil, NGL and 
gas prices, respectively.

The increase in 2016 oil and gas revenues relative to 2015 is primarily due to 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. 

Average daily sales volumes in 2017 and 2016 increased by 16 percent and 15 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. 

The  following  table  provides  average  daily  sales  volumes  from  continuing  operations  for  2017,  2016  and  2015:

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

Year Ended December 31,

2017
158,571
55,008
352,507
272,330

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

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

_____________________

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

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  2017,  2016  and  2015:

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

Year Ended December 31,

2017

2016

2015

$
$
$
$

48.24
19.31
2.63
35.39

$
$
$
$

39.65
13.49
2.11
28.25

$
$
$
$

43.55
13.31
2.40
29.25

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 or international export 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 
both the risk and rewards of ownership, including credit risk, of the commodities purchased and the responsibility to deliver the 
commodities sold. The transportation costs associated with these transactions are presented on a net basis in purchased oil and 
gas expense. The net effect of third party purchases and sales of oil and gas for the year ended December 31, 2017 was a loss of 
$31 million, as compared to a loss of $64 million and a loss of $39 million for the years ended December 31, 2016 and 2015, 
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 was $53 million for the year ended December 31, 
2017, as compared to $32 million and $22 million for the years ended December 31, 2016 and 2015, respectively. The increase 
in interest and other income during 2017 as compared to 2016 was primarily due to (i) an increase of $11 million in severance, 
sales and property tax refunds and (ii) an increase of $10 million in interest income on short-term and long-term investments. The 
increase in interest and other income during 2016 as compared to 2015 was primarily due to (i) an increase of $19 million in 
interest income on short-term and long-term investments, partially offset by (ii) a decrease of $5 million in equity interest in income 
of EFS Midstream. 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.

52

 
 
 
 
PIONEER NATURAL RESOURCES COMPANY

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, 2017, the Company recorded $100 million of net derivative losses, compared to 
$161 million of net derivative losses and $879 million of net derivative gains for the years ended December 31, 2016 and 2015, 
respectively, on commodity price, diesel price, interest rate and marketing derivatives. For the years ended December 31, 2017, 
2016 and 2015, the Company received net cash receipts of $74 million, $690 million and $876 million, respectively, from its 
derivative activities. 

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

Bbl or Mcf) for the years ended December 31, 2017, 2016 and 2015:

Year Ended December 31,

2017

2016

2015

Net cash
receipts
(payments)

(in millions)

Price impact

Net cash
receipts

(in
millions)

Price impact

Net cash
receipts

(in
millions)

Price impact

Oil derivative receipts

NGL derivative receipts (payments)

Gas derivative receipts (payments)

Total net commodity derivative

receipts

$

$

67

$ 1.15 per Bbl

$

609

$ 12.42 per Bbl

$

744

$19.36 per Bbl

(1) $ (0.06) per Bbl

5

$ 0.30 per Bbl

18

$ 0.79 per Bbl

2

$ 0.02 per Mcf

67

$ 0.54 per Mcf

114

$ 0.87 per Mcf

68

$

681

$

876

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 $208 million, $2 million
and $782 million during the years ended December 31, 2017, 2016 and 2015, respectively. For the year ended December 31, 2017, 
the Company's gain on disposition of assets is primarily due to a gain of $194 million recognized on the sale of approximately 
20,500 acres in the Martin County region of the Permian Basin. 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. 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 net gains on disposition of assets.

Oil and gas production costs. The Company recognized oil and gas production costs from continuing operations of $591 
million, $581 million and $717 million for the years ended December 31, 2017, 2016 and 2015, 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.

The following table provides the components of the Company's total production costs per BOE for 2017, 2016 and 2015:

Lease operating expenses
Third party transportation charges
Net natural gas plant (income) charges
Workover costs
Total production costs

Year Ended December 31,

2017

2016

2015

$

$

4.58
0.85
(0.28)
0.80
5.95

$

$

5.02
1.41
0.01
0.35
6.79

$

$

7.24
1.60
0.16
0.62
9.62

Total oil and gas production costs per BOE for the year ended December 31, 2017 decreased 12 percent as compared to 
2016. 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 and the Company's 
cost reduction initiatives. The decrease in third party transportation costs per BOE is due to a lower proportion of the Company's 
total production being subject to higher Eagle Ford Shale transportation costs. The net natural gas plant income per BOE is primarily 

53

 
 
PIONEER NATURAL RESOURCES COMPANY

reflective of increased earnings on third party volumes that are processed in the Company-owned facilities due to higher NGL 
and gas prices. The increase in workover costs per BOE was primarily due to an increase in Permian vertical well workover activity 
due to the improvement in commodity prices.

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 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 decline in workover costs per 
BOE was primarily due to reduced workover activity on the older vertical wells, as such activity was generally uneconomical as 
a result of the lower commodity price environment.

Production and ad valorem taxes. The Company recorded production and ad valorem taxes of $215 million during 2017, 
as compared to $136 million and $145 million for 2016 and 2015, 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 increase in production and ad valorem taxes per 
BOE for the year ended December 31, 2017 as compared to 2016, is primarily due to the increase in commodity prices during 
2017 and, for ad valorem tax purposes, the higher valuation attributable to the Company's successful Spraberry/Wolfcamp horizontal 
drilling program in 2017. The decrease in production and ad valorem taxes per BOE for the year ended December 31, 2016 as 
compared to 2015 is primarily due to the decrease in commodity prices during 2016.

The following table provides the Company's production and ad valorem taxes per BOE for 2017, 2016 and 2015:

Production taxes
Ad valorem taxes
Total ad valorem and production taxes

Year Ended December 31,

2017

2016

2015

$

$

1.59
0.57
2.16

$

$

1.14
0.46
1.60

$

$

1.19
0.76
1.95

 Depletion, depreciation and amortization expense. The Company's total DD&A expense was $1.4 billion ($14.08 per 
BOE), $1.5 billion ($17.29 per BOE), and $1.4 billion ($18.59 per BOE) for 2017, 2016 and 2015, respectively. Depletion expense 
on oil and gas properties, the largest component of DD&A expense, was $13.61, $16.77 and $18.01 per BOE during 2017, 2016
and 2015, respectively.

Depletion expense on oil and gas properties for the year ended December 31, 2017 decreased 19 percent as compared to 
2016. The decrease is primarily due to (i) additions to proved reserves attributable to the Company's successful Spraberry/Wolfcamp 
horizontal drilling program and (ii) commodity price increases and cost reduction initiatives, both of which had the effect of adding 
proved reserves by lengthening the economic lives of the Company's producing wells.

Depletion expense on oil and gas properties was $16.77 during 2016, as compared to $18.01 during 2015. The seven percent
decrease in per BOE depletion expense, as compared to that of 2015 was 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.

Impairment of oil and gas properties and other long-lived assets. The Company recorded impairment expense to reduce 
the carrying values of oil and gas properties by $285 million, $32 million and $1.1 billion during the years ended December 31, 
2017, 2016 and 2015.

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").

As a result of the Company's impairment assessments, the Company recognized pretax, noncash impairment charges to 
reduce the carrying values of (i) the Raton field ($285 million) during the year ended December 31, 2017, (ii) the West Panhandle 
field ($32 million) during the year ended December 31, 2016 and (iii) 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.

54

 
 
PIONEER NATURAL RESOURCES COMPANY

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 for 2017, 2016 and 2015 (in millions):

Geological and geophysical
Exploratory well costs
Leasehold abandonments and other

Year Ended December 31,
2016

2017

2015

$

$

84
10
12
106

$

$

77
1
41
119

$

$

71
17
11
99

During 2017, the Company's exploration and abandonment expense was primarily attributable to $84 million of geological 
and geophysical costs, of which $66 million was geological and geophysical administrative costs, $10 million associated with 
unsuccessful exploration wells and $12 million of leasehold abandonment expense and other. During 2017, the Company completed 
and evaluated 224 exploration/extension wells, 99 percent of which were successfully completed as discoveries.

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 
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 unsuccessful 
exploration wells, 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.

General and administrative expense. General and administrative expense totaled $326 million ($3.28 per BOE), $325 
million ($3.80 per BOE) and $327 million ($4.39 per BOE) during 2017, 2016 and 2015, respectively. The 2017 and 2016 decreases 
in general and administrative expense per BOE were primarily due to an increase in sales volumes of 16 percent and 15 percent, 
respectively, combined with the Company's cost reduction initiatives, including not replacing personnel who have left the Company 
and reduced contractor activity.

Accretion  of  discount  on  asset  retirement  obligations. Accretion  of  discount  on  asset  retirement  obligations  was  $19 
million, $18 million and $12 million during the years ended December 31, 2017, 2016 and 2015, 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  $153  million,  $207  million  and  $187  million  during  2017,  2016  and  2015, 
respectively. The decrease in interest expense during the year ended December 31, 2017, as compared 2016, was primarily due 
to the repayment of both the Company's 6.65% Senior Notes, which matured in March 2017, and the Company's 5.875% Senior 
Notes, which matured in July 2016. The increase in interest expense during the year ended December 31, 2016, as compared to 
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, 2017 was 5.6 percent, as compared to 6.0 percent and 6.9 percent for 
the years ended December 31, 2016 and 2015, 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.

55

 
 
PIONEER NATURAL RESOURCES COMPANY

Other expense. Other expense was $244 million during 2017, as compared to $288 million during 2016 and $315 million 
during 2015. The $44 million decrease in other expense during 2017, as compared to 2016, was primarily due to (i) a decrease of 
$64 million in idle drilling and well service equipment charges and (ii) a decrease of $37 million in net losses from Company-
provided fracture stimulation and related service operations that are provided to third party working interest owners, partially 
offset by (iii) an increase of $58 million in unused firm transportation costs. 

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.

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, the Company 
recognized $4 million of restructuring charges during the year ended December 31, 2016. 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, the Company recognized $23 million of restructuring charges during 
the year ended December 31, 2015, 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. 

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. The Company recognized an income tax benefit attributable to earnings from continuing operations 
of $524 million during 2017, as compared to an income tax benefit of $403 million and $155 million during 2016 and 2015, 
respectively. The Company's effective tax rate on earnings from continuing operations, excluding income from noncontrolling 
interest, for 2017 was a negative 170 percent for 2017 and 42 percent and 37 percent for 2016 and 2015, respectively, as compared 
to the combined United States federal and state statutory rates of approximately 36 percent. 

The Company's effective tax rate for 2017 differs from the combined statutory rate primarily due to the enactment on 
December 22, 2017 of the Tax Cuts and Jobs Act (the "Tax Reform Legislation"), which made significant changes to the United 
States federal income tax law. The most significant change affecting the Company was a reduction in the federal corporate income 
tax rate to 21 percent beginning January 1, 2018. This rate change resulted in a $625 million income tax benefit during 2017, 
primarily associated with the remeasurement of the Company's deferred tax liabilities at the new corporate tax rate as of December 
31, 2017. Excluding the effects of the Tax Reform Legislation, the Company's effective tax rate for 2017 would have been 33 
percent.

The effective 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.

The Tax Reform Legislation also repealed corporate alternative minimum tax ("AMT") for tax years beginning in January 1, 
2018, and provides that existing AMT credit carryovers are refundable beginning in 2018. As of December 31, 2017, the Company 
had AMT credit carryovers of $20 million that are expected to be fully refunded by 2022.

The Tax Reform Legislation preserves the deductibility of intangible drilling costs and provides for 100 percent bonus 
depreciation on personal tangible property expenditures through 2022. The bonus depreciation percentage is phased down from 
100 percent beginning in 2023 through 2026.

The Tax Reform Legislation is a comprehensive bill containing other provisions, such as limitations on the deductibility 
of interest expense and certain executive compensation, that are not expected to materially affect Pioneer. The ultimate impact of 
the Tax Reform Legislation may differ from the Company's estimates as of December 31, 2017 due to changes in the interpretations 
and assumptions made by the Company as well as additional regulatory guidance that may be issued.

56

PIONEER NATURAL RESOURCES COMPANY

As  of  December  31,  2017  and  2016,  the  Company  had  unrecognized  tax  benefits  of  $124  million  and  $112  million, 
respectively, 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 substantially resolve the uncertainties associated with the unrecognized tax benefits by 
December 2018.

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. In 2015, the Company recognized losses from discontinued operations, net 
of tax, of $7 million related to plugging and abandonment obligations associated with two Gulf of Mexico wells that Pioneer 
divested in 2009. The results of operations for these assets were recorded in discontinued operations upon their divestiture and 
therefore the costs incurred subsequent to their divestiture are reflected 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 discontinued operations .

Capital Commitments, Capital Resources and Liquidity

Capital commitments. The Company's primary needs for cash are for (i) capital expenditures, (ii) acquisitions of oil and 
gas properties, vertical integration assets and facilities, (iii) payments of contractual obligations, including debt maturities, (iv) 
dividends  and  share  repurchases  and  (v)  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 2018, 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, 
including repayment of the May 2018 debt maturity and 2018 stock repurchaces, no assurances can be given that such funding 
sources will be adequate to meet the Company's future needs.

During 2018, the Company plans to focus its capital spending primarily on oil drilling activities in the Spraberry/Wolfcamp 
area  of  the  Permian  Basin.  The  Company's  2018  capital  budget  totals  $2.9  billion  (excluding  acquisitions,  asset  retirement 
obligations, capitalized interest, geological and geophysical administrative costs and information technology systems upgrades), 
consisting  of  $2.6  billion  for  drilling  and  completion  related  activities,  including  additional  tank  batteries,  saltwater  disposal 
facilities and gas processing facilities, and $260 million for water infrastructure, vertical integration, field facilities and vehicles. 
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, dividend 
payments and provide adequate liquidity to fund other needs.

Investing activities. Net cash used in investing activities during 2017 was $1.8 billion, as compared to net cash used in 
investing activities of $3.8 billion and $1.8 billion during 2016 and 2015, respectively. The decrease in net cash flow used in 
investing activities during 2017, as compared to 2016, is primarily due to (i) a decrease of $1.8 billion in net purchases of investments 
(commercial paper, corporate bonds and time deposits), (ii) a $563 million increase in proceeds from investments and (iii) 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 in 2016, partially offset by (iv) a $508 million increase in additions to oil and gas properties, (v) a $155 
million decrease in proceeds from the disposition of assets and (v) a $133 million increase in additions to other assets and other 
property and equipment. Proceeds from the disposition of assets during 2017 included $264 million associated with the sale of 
approximately 20,500 acres in the Martin County region of the Permian Basin with net production of approximately1,500 BOEPD. 
Proceeds  from  the  disposition  of  assets  during  2016  included  $501  million  associated  with  the  sale  of  EFS  Midstream. The 
Company's investing activities during the year ended December 31, 2017 were primarily funded by net cash provided by operating 
activities.

 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  the 
aforementioned 28,000 net acres in the Permian Basin from an unaffiliated third party for $428 million in 2016 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 
57

PIONEER NATURAL RESOURCES COMPANY

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.

Dividends/distributions. During each of the years ended December 31, 2017, 2016 and 2015, the Board declared semiannual 
dividends  of  $0.04  per  common  share. Associated  therewith,  the  Company  paid  $14  million,  $13  million  and  $12  million, 
respectively, of aggregate dividends. In addition, in February 2018, the Board declared a cash dividend of $0.16 per share on 
Pioneer's outstanding common stock, payable April 12, 2018 to stockholders of record at the close of business on March 29, 2018. 
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 arrangements and transactions that can give 
rise to material off-balance sheet obligations of the Company. As of December 31, 2017, the material off-balance sheet arrangements 
and transactions that the Company had entered into 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. The contractual obligations for which the ultimate settlement 
amounts are not fixed and determinable include (i) derivative contracts that are sensitive to future changes in commodity prices 
or interest rates, (ii) gathering, processing (primarily treating and fractionation) and transportation commitments on uncertain 
volumes of future throughput, (iii) open purchase commitments and (iv) 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. The Company expects to enter into similar contractual arrangements in the 
future, including incremental derivative contracts and additional firm purchase and transportation arrangements, in order to support 
the Company's business plans. 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.

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

December 31, 2017:

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

2019 and
2020

2021 and
2022

2018

Thereafter

$

450
27
93
232
179
102

$

(in millions)
450
95
78
23
6
82

568
1,651

$

1,291
2,025

$

1,100
77
—
—
—
82

1,103
2,362

$

$

750
680
—
—
—
169

1,554
3,153

$

$

(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.

(b)  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.

(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, 2017. See Note J of Notes to Consolidated Financial 

58

 
 
PIONEER NATURAL RESOURCES COMPANY

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, 2017. The Company's commodity derivative contracts are periodically 
measured and recorded at fair value and continue to be subject to market and credit risk. The ultimate liquidation value of 
the Company's commodity derivatives will be dependent upon actual future commodity prices, which may differ materially 
from the inputs used to determine the derivatives' fair values as of December 31, 2017. 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 

equipment ordered, but not received, as of December 31, 2017.

(f)  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.

(g)  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 volume 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, net cash provided by operating 
activities,  sales  of  short-term  and  long-term  investments,  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.

Operating activities. Net cash provided by operating activities for the years ended December 31, 2017, 2016 and 2015 was 
$2.1 billion, $1.5 billion and $1.3 billion, respectively. The increase in net cash flow provided by operating activities in 2017, as 
compared to 2016, was primarily due to increases in the Company's oil and gas revenues in 2017 as a result of increases in 
commodity prices and sales volumes, partially offset by a $613 million reduction in cash provided by commodity derivatives 
during 2017. 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. 

Asset divestitures. In February 2018, the Company announced its intention to divest its properties in South Texas, Raton 
and the West Panhandle field and focus its efforts and capital resources to its Permian Basin assets. No assurance can be given 
that the sales will be completed in accordance with the Company's plans or on terms and at prices acceptable to the Company.

In April 2017, the Company completed the sale of approximately 20,500 acres in the Martin County region of the Permian 
Basin to an unaffiliated third party for cash proceeds of $264 million. The sale resulted in a gain of $194 million. In conjunction 
with the divestiture, the Company reduced the carrying value of goodwill by $2 million, reflecting the portion of the Company's 
goodwill related to the assets sold.

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. 

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.

59

PIONEER NATURAL RESOURCES COMPANY

Financing activities. Net cash used in financing activities during 2017 was $529 million, as compared to net cash provided 
by financing activities during 2016 and 2015 of $2.0 billion and $951 million, respectively. The following provides a description 
of the Company's significant financing activities during 2017, 2016 and 2015:

•  During March 2017, the Company repaid $485 million associated with the maturity of the Company's 6.65% senior 

notes;

•  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; and

•  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.

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, net cash provided by 
operating activities, sales of short-term and long-term investments, proceeds from divestitures and unused borrowing capacity 
under its credit facility. As of December 31, 2017, the Company had no outstanding borrowings under its 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 .60:1, which is above the Company's December 31, 2017 ratio of .16:1. The Company also 
had cash on hand of $896 million, short-term investments of $1.2 billion and long-term investments of $66 million as of December 
31, 2017. If internal cash flows do not meet the Company's expectations, the Company may fund a portion of its capital expenditures 
using cash on hand, through 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, and/or reduce its level of capital expenditures or reduce 
dividend payments. 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 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 2018 capital expenditures, dividend payments and provide adequate liquidity to fund other 
needs, including repayment of the May 2018 debt maturity and 2018 stock repurchases, 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 mid-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 impact 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, 2017 was $11.8 billion, 
consisting of cash and cash equivalents of $896 million, short-term and long-term investments of $1.3 billion, debt of $2.7 billion
and equity of $11.3 billion. The Company's net debt to book capitalization increased to five percent at December 31, 2017 from 
two percent at December 31, 2016, primarily due to funding the Company's oil and gas drilling and other property investments 
with cash and cash equivalents and sales of short-term and long-term investments. The Company's ratio of current assets to current 
liabilities decreased to 1.41:1 at December 31, 2017, as compared to 2.11:1 at December 31, 2016, primarily due to an increase 
in accounts payable as a result of the Company's higher drilling and completion related activities in the fourth quarter of 2017.

60

Critical Accounting Estimates

PIONEER NATURAL RESOURCES COMPANY

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 2017, 2016 and 
2015, the Company recognized exploration, abandonment, geological and geophysical expense of $106 million, $119 million and 
$99 million, respectively.

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.

The Company's proved reserve information included in this Report as of December 31, 2017, 2016 and 2015 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, 2017 is the current 
market value of the Company's estimated proved reserves. In accordance with SEC requirements, the Company based the 2017 
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 

61

PIONEER NATURAL RESOURCES COMPANY

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, 2017, the Company carried unproved property costs of 
$558 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 
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, 2017 and 2016, the Company had unrecognized tax benefits of $124 million and $112 million, 
respectively, 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 quarters of 
2017 and 2016, 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 

62

PIONEER NATURAL RESOURCES COMPANY

valuation methodologies to utilize, the estimation of proved reserves as described above and the weighting of different valuation 
methodologies applied. 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.

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."

63

ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

PIONEER NATURAL RESOURCES COMPANY

The following quantitative and qualitative information is provided about financial instruments to which the Company was 
a party as of December 31, 2017, 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, 2017, 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 2017:

Fair value of contracts outstanding as of December 31, 2016
Changes in contract fair values
Contract maturities
Contract termination receipts
Fair value of contracts outstanding as of December 31, 2017

Quantitative Disclosures

Derivative Contract Net Liabilities

Commodities

Interest Rate
(in millions)

Total

$

$

(76) $
(99)
(67)
(2)
(244) $

$

6
(1)
—
(5)
— $

(70)
(100)
(67)
(7)
(244)  

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, 2017 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, 2017. Although the 
Company had no outstanding variable rate debt as of December 31, 2017, 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, 2018
is presented in the table below. 

INTEREST RATE SENSITIVITY
DEBT OBLIGATIONS AS OF DECEMBER 31, 2017 

Year Ending December 31,

2018

2019

2020

2021

2022

Thereafter

Total

(dollars in millions)

Asset 
(Liability)
Fair Value at
December 31,
2017

$

450

$

— $

450

$

500

$

600

$

750

$

2,750

$

(2,936)

5.11%

3.50%

5.00%

3.94%

4.42%

4.13%

4.72%

4.94%

5.70%

Total Debt:

Fixed rate principal maturities (a)
Weighted average fixed interest

rate

Average variable interest rate

_______________________

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

Interest rate swaps. During 2017, the Company was party to interest rate derivative contracts whereby the Company would 
have received 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. During the fourth quarter 
of 2017, the Company liquidated its interest rate derivative contracts for cash proceeds of $5 million. As of December 31, 2017, 
the Company did not have any interest rate derivatives outstanding.

64

 
 
 
 
 
 
 
PIONEER NATURAL RESOURCES COMPANY

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, 
2017. 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.

65

PIONEER NATURAL RESOURCES COMPANY

DERIVATIVE FINANCIAL INSTRUMENTS AS OF DECEMBER 31, 2017 

Oil Derivatives:

Average daily notional Bbl volumes:

Collar contracts

2018

First
Quarter

Second
Quarter

Third
Quarter

Fourth
Quarter

Year Ending
December 31,
2019

Asset
(Liability)
Fair Value at
December 31,
2017 (a)

(in millions)

3,000

3,000

3,000

3,000

— $

(4)

Weighted average ceiling price per Bbl

$ 58.05

$ 58.05

$ 58.05

$ 58.05

Weighted average floor price per Bbl

$ 45.00

$ 45.00

$ 45.00

$ 45.00

Collar contracts with short puts (b)

149,000

149,000

154,000

159,000

Weighted average ceiling price per Bbl

$ 57.79

$ 57.79

$ 57.70

$ 57.62

Weighted average floor price per Bbl

$ 47.42

$ 47.42

$ 47.34

$ 47.26

Weighted average short put price per Bbl

$ 37.38

$ 37.38

$ 37.31

$ 37.23

Average forward NYMEX oil prices (c)

$ 60.60

$ 60.23

$ 59.00

$ 57.65

NGL Derivatives:

Ethane basis swap contracts (MMBtu) (d)

Weighted average price differential per MMBtu

Average forward NYMEX gas prices (c)

6,920
1.60
2.59

6,920
1.60
2.66

6,920
1.60
2.74

6,920
1.60
2.83

$
$

$
$

$
$

$
$

Gas Derivatives:

Average daily notional MMBtu volumes:

Swap contracts (e)

30,000

100,000

100,000

100,000

Weighted average fixed price per MMBtu

Collar contracts with short puts

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

Southern California index swap contracts (f)(g)

Weighted average fixed price per MMBtu

Average forward basis differential prices (h)

Houston Ship Channel index swap volume (f)(i)

Weighted average fixed price per MMBtu

Average forward basis differential prices (h)

$

3.37

100,000

$

$

$

$

$

$

$

$

3.82

3.15

2.57

2.59

80,000

0.34

0.40
3,444

0.63

0.64

$

$

$

$

$

$

$

$

$

_____________________

3.00

50,000

3.40

2.75

2.25

2.66

40,000

0.30

0.39
—

$

$

$

$

$

$

$

3.00

50,000

3.40

2.75

2.25

2.74

80,000

0.30

0.58
—

$

$

$

$

$

$

$

3.00

50,000

3.40

2.75

2.25

2.83

53,261

0.43

0.70
—

— $

— $

— $

— $

— $

—

$

$

$

$

$

$

$
$

$

$

$

$

$

$

—

—

40,000

$

(234)

59.62

52.00

42.00

55.13

6,920
1.60
2.77

$

—

6

4

— $

—

— $

—

—

—

80,000

$

(12)

0.31

0.61

— $

—

—

(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)  Subsequent to December 31, 2017, the Company entered into additional oil collar contracts with short puts for 25,000 
Bbls per day of 2019 production with a ceiling price of $62.55 per Bbl, a floor price of $53.80 per Bbl and a short put 
price of $43.80 per Bbl.

(c)  The average forward NYMEX oil, ethane and gas prices are based on February 14, 2018 market quotes.
(d)  The ethane basis swap contracts reduce the price volatility of ethane forecasted for sale by the Company at Mont 

Belvieu, Texas-posted prices. The ethane basis swap contracts 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.

66

 
 
 
PIONEER NATURAL RESOURCES COMPANY

(e)  Subsequent to December 31, 2017, the Company entered into additional swap contracts for 100,000 MMBtu per day of 

February 2018 production with a price of $3.46 per MMBtu.

(f)  The referenced basis swap contracts fix the basis differentials between Permian Basin index prices and southern 

California or Houston Ship Channel index prices for Permian Basin gas forecasted for sale in southern California or the 
Gulf Coast region.

(g)  Subsequent to December 31, 2017, the Company entered into additional basis swap contracts for 20,000 MMBtu per day 

of November 2018 through March 2019 production with a price differential of $0.77 per MMBtu.

(h)  The average forward basis differential prices are based on February 14, 2018 market quotes for basis differentials 

between Permian Basin index prices and southern California and Houston Ship Channel index prices.

(i)  Subsequent to December 31, 2017, the Company entered into additional basis swap contracts for 10,000 MMBtu per day 

of February 2018 production with a price differential of $0.82 per MMBtu.

Marketing derivatives. 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 swap contracts 
to mitigate price risk. The following table provides information about the Company's marketing derivative financial instruments 
that were sensitive to changes in oil prices as of December 31, 2017:

2018

First 
Quarter

Second 
Quarter

Third 
Quarter

Fourth 
Quarter

Liability Fair
Value at
December 31,
2017 (a)

(in millions)

Oil Derivatives:

Average daily notional Bbl volumes:

  Basis swap contracts

Louisiana Light Sweet index swap volume (b)

10,000

10,000

Price differential ($/Bbl)

Average forward basis differential prices (c)

Magellan East Houston index swap volume (b)

Price differential ($/Bbl)

Average forward basis differential prices (c)

____________________

$

$

$

$

3.18

2.51

11,556

3.29

3.50

$

$

$

$

3.18

2.15

11,703

3.30

3.25

$

$

$

$

6,739

3.18

2.25

3,370

3.30

3.70

$

$

— $

—

— $

—

(3)

(1)

(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)  The referenced basis swap contracts fix the basis differentials between NYMEX WTI and Louisiana Light Sweet 

("LLS") or Magellan East Houston ("MEH") oil prices for Permian Basin oil forecasted for sale in the Gulf Coast region.

(c)   The average forward basis differential prices are based on February 14, 2018 market quotes for basis differentials 

between NYMEX WTI and LLS or MEH oil prices.

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 2017, the Company liquidated its diesel derivative swap contracts 
for cash proceeds of $2 million. As of December 31, 2017, 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, 2016 to December 31, 2017.

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 or export 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.

67

PIONEER NATURAL RESOURCES COMPANY

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.

68

ITEM 8.

FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

PIONEER NATURAL RESOURCES COMPANY

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

Report of Independent Registered Public Accounting Firm
Consolidated Balance Sheets as of December 31, 2017 and 2016
Consolidated Statements of Operations for the Years Ended December 31, 2017, 2016 and 2015
Consolidated Statements of Equity for the Years Ended December 31, 2017, 2016 and 2015
Consolidated Statements of Cash Flows for the Years Ended December 31, 2017, 2016 and 2015
Notes to Consolidated Financial Statements
A. Organization and Nature of Operations
B. Summary of Significant Accounting Policies
C. Acquisitions and Divestitures
D. Fair Value Measurements
E. Derivative Financial Instruments
F. Exploratory Well Costs
G. Long-term Debt and Interest Expense
H. Incentive Plans
I. Asset Retirement Obligations
J. Commitments and Contingencies
K. Related Party Transactions
L. Major Customers
M. Interest and Other Income
N. Other Expense
O. Income Taxes
P. Net Income Per Share Attributable to Common Stockholders
Q. Subsequent Events

Unaudited Supplementary Information

Page

70
71
73
74
76
77
77
77
83
84
88
92
94
95
99
99
101
101
103
103
103
107
108
109

69

 
REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Stockholders and the Board of Directors of Pioneer Natural Resources Company

Opinion on the Financial Statements 

We have audited the accompanying consolidated balance sheets of Pioneer Natural Resources Company (the Company) as 
of December 31, 2017 and 2016, and the related consolidated statements of operations, equity and cash flows for each of the three 
years  in  the  period  ended  December  31,  2017,  and  the  related  notes  (collectively  referred  to  as  the  “consolidated  financial 
statements”). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of 
the Company at December 31, 2017 and 2016, and the results of its operations and its cash flows for each of the three years in the 
period ended December 31, 2017, in conformity with U.S. generally accepted accounting principles. 

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) 
(PCAOB), the Company's internal control over financial reporting as of December 31, 2017, based on criteria established in 
Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 
framework), and our report dated February 20, 2018 expressed an unqualified opinion thereon. 

Basis for Opinion 

These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion 
on the Company’s financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are 
required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable 
rules and regulations of the Securities and Exchange Commission and the PCAOB. 

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform 
the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to 
error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, 
whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a 
test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the 
accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the 
financial statements. We believe that our audits provide a reasonable basis for our opinion.

We have served as the Company’s auditor since 1998.
Dallas, Texas
February 20, 2018 

/s/ Ernst & Young LLP

70

 
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
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
Other assets, net

December 31,

2017

2016

$

$

896
1,218

639
1
7
212
11
26
3,010

20,404
558
(9,196)
11,766
66
270
1,759
132
17,003

$

$

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

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

71

 
 
PIONEER NATURAL RESOURCES COMPANY

CONSOLIDATED BALANCE SHEETS (continued)
(in millions, except share data)

LIABILITIES AND EQUITY

Current liabilities:

Accounts payable:

Trade
Due to affiliates

Interest 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; 173,796,743 and 173,221,845

shares issued as of December 31, 2017 and 2016, respectively

Additional paid-in capital
Treasury stock, at cost; 3,608,132 and 3,497,742 shares as of December 31, 2017 and 2016,

respectively
Retained earnings

Total equity attributable to common stockholders
Noncontrolling interest in consolidated subsidiaries

Total equity

Commitments and contingencies

December 31,

2017

2016

$

$

1,174
108
59
449
232
106
2,128
2,283
23
899
391

2
8,974

(249)
2,547
11,274
5
11,279

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

$

17,003

$

16,459

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

72

 
 
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
Income (loss) from continuing operations
Loss from discontinued operations, net of tax
Net income (loss) attributable to common stockholders

Basic net income (loss) per share attributable to common stockholders:

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

Diluted net income (loss) per share attributable to common stockholders:

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

Basic and diluted weighted average shares outstanding

Year Ended December 31,

2017

2016

2015

$

3,518
1,776
53
(100)
208
5,455

591
215
1,400
1,807
285
106
326
19
153
244
5,146
309
524
833
—
833

4.86
—
4.86

4.85
—
4.85

170

$

$

$

$

$

$

2,418
1,091
32
(161)
2
3,382

581
136
1,480
1,155
32
119
325
18
207
288
4,341
(959)
403
(556)
—
(556) $

(3.34) $
—
(3.34) $

(3.34) $
—
(3.34) $

2,178
700
22
879
782
4,561

717
145
1,385
739
1,056
99
327
12
187
315
4,982
(421)
155
(266)
(7)
(273)

(1.79)
(0.04)
(1.83)

(1.79)
(0.04)
(1.83)

166

149

$

$

$

$

$

$

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

73

 
 
PIONEER NATURAL RESOURCES COMPANY

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

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

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

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

Shares
Outstanding
(in thousands)

148,905

$

—

58

(201)

—

618

—

—

—

149,380

$

19,838

—

98

(200)

—

608

—

—

169,724

$

Equity Attributable to Common Stockholders

Common
Stock

Additional
Paid-in
Capital

Treasury
Stock

Retained
Earnings

Noncontrolling
Interests

Total
Equity

2

—

—

—

—

—

—

—

—

2

—

—

—

—

—

—

—

—

2

$

6,167

$

(171) $

2,583

$

—

3

—

7

—

90

—

—

—

3

(31)

—

—

—

—

—

(12)

—

—

—

—

—

—

(273)

$

6,267

$

(199) $

2,298

$

2,534

—

1

—

1

—

89

—

—

—

6

(25)

—

—

—

—

—

(14)

—

—

—

—

—

(556)

$

8,892

$

(218) $

1,728

$

8

—

—

—

—

—

—

(1)

—

7

—

—

—

—

—

—

—

—

7

$

8,589

$

(12)

6

(31)

7

—

90

(1)

(273)

8,375

2,534

(14)

7

(25)

1

—

89

(556)

$

10,411

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

74

 
 
 
 
 
PIONEER NATURAL RESOURCES COMPANY

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

Balance as of December 31, 2016

Dividends declared ($0.08 per share)

Exercise of long-term incentive plan stock options and employee

stock purchases

Purchases of treasury stock

Compensation costs:

Vested compensation awards

Compensation costs included in net income

Purchase of noncontrolling interest

Net income

Balance as of December 31, 2017

Shares
Outstanding

(in thousands)

169,724

$

—

81

(191)

575

—

—

—

170,189

$

Equity Attributable to Common Stockholders

Common
Stock

Additional
Paid-in
Capital

Treasury
Stock

Retained
Earnings

Noncontrolling
Interests

Total
Equity

2

—

—

—

—

—

—

—

2

$

8,892

$

(218) $

1,728

$

—

1

—

—

79

2

—

—

5

(36)

—

—

—

—

(14)

—

—

—

—

—

833

$

8,974

$

(249) $

2,547

$

7

—

—

—

—

—

(2)

—

5

$

10,411

(14)

6

(36)

—

79

—

833

$

11,279

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

75

 
 
 
 
 
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:

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
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
Payments of financing fees
Dividends paid

Net cash provided by (used in) financing activities
Net increase (decrease) in cash and cash equivalents
Cash and cash equivalents, beginning of period
Cash and cash equivalents, end of period

$

Year Ended December 31,

2017

2016

2015

$

833

$

(556) $

(273)

1,400
285
2
22
(519)
(208)
19
—
5
174
79
74

(122)
(4)
(35)
—
8
(3)
134
(9)
(45)
2,090

352
—
1,465
(899)
(2,365)
(336)
(1,783)

—
(485)
—
—
6
(36)
—
(14)
(529)
(222)
1,118
896

$

1,480
32
8
42
(379)
(2)
18
—
13
851
89
67

(134)
40
(32)
(24)
(22)
(7)
58
3
(46)
1,499

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

—
(455)
2,534
—
7
(25)
—
(13)
2,048
(273)
1,391
1,118

$

1,385
1,056
86
28
(178)
(782)
12
(4)
18
(3)
90
45

54
(20)
8
—
—
—
(258)
25
(34)
1,255

553
—
—
—
(2,110)
(283)
(1,840)

998
—
—
(1)
6
(31)
(9)
(12)
951
366
1,025
1,391

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

76

 
 
PIONEER NATURAL RESOURCES COMPANY
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2017, 2016 and 2015

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, natural gas liquids ("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 2016 and 2015 consolidated financial statement and footnote amounts in 

order to conform them to the 2017 presentations. 

In addition, the presentation of certain purchases and sales of third-party oil and gas with the same counterparty has been 
revised in 2016 and 2015 to present such transactions on a net basis in purchased oil and gas expense. Previously, these transportation 
arrangements, which were carried out as purchases from and sales to the same third party, were separately stated on a gross basis 
in sales of purchased oil and gas and purchased oil and gas expense. This revision did not impact the Company's balance sheet, 
net income (loss) from continuing operations, equity or cash flows. While not material to the 2016 and 2015 consolidated financial 
statements as a whole, the presentation has been revised to enhance consistency. The following individual line items were affected, 
in addition to total revenues and total costs and expenses:

Sales of purchased oil and gas, as previously reported
Revision to sales of purchased oil and gas
Sales of purchased oil and gas, reported herein

Purchased oil and gas, as previously reported
Revision to purchased oil and gas
Purchased oil and gas, reported herein

Year Ended December 31,

2016

2015

(in millions)

$

$

$

$

1,533
(442)
1,091

1,597
(442)
1,155

$

$

$

$

964
(264)
700

1,003
(264)
739

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. 

77

PIONEER NATURAL RESOURCES COMPANY
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2017, 2016 and 2015

Accounts receivable. As of December 31, 2017 and 2016, the Company had accounts receivable – trade, net of allowances 
for bad debts, of $639 million and $517 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 December 31, 2017 and 2016, the Company's allowances for doubtful accounts totaled $1 million for both respective 
periods. 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, water, 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. 

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, 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, 2017

and 2016:

Materials and supplies (a)

Commodities

____________________

As of December 31,

2017

2016

(in millions)
134

$

78

212

$

144

37

181

$

$

(a)  As of December 31, 2017 and 2016, the Company's materials and supplies inventories were net of valuation allowances of 

$5 million and $28 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 

78

PIONEER NATURAL RESOURCES COMPANY
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2017, 2016 and 2015

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 10 gas processing plants and four treating facilities. The Company is the operator of one 
of the gas processing plants and all four of the treating facilities. Nine of the gas processing plants are operated by third parties 
and one of the treating facilities is 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, 2017, 2016 and 2015 were $60 million, $41 million and $39 million, 
respectively. Third-party expenses attributable to the processing plants and treating facilities in continuing operations for the same 
respective periods were $26 million, $24 million and $27 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.

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 2017, 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. 

79

PIONEER NATURAL RESOURCES COMPANY
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2017, 2016 and 2015

Other property and equipment, net. Other property and equipment is recorded at cost. As of December 31, 2017 and 2016, 

the net carrying value of other property and equipment consisted of the following:

Land and buildings

Proved and unproved sand properties (b)

Water infrastructure (c)

Equipment (d)

Information technology (e)

Leasehold improvements

Vehicles

Furniture and fixtures

____________________

As of December 31,

2017 (a)

2016 (a)

(in millions)
529

$

$

488

347

194

143

20

19

19

475

484

221

206

84

22

15

22

$

1,759

$

1,529

(a)  At December 31, 2017 and 2016, other property and equipment was net of accumulated depreciation of $936 million and 

$866 million, respectively.

(b)  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.

(c)  Includes pipeline infrastructure costs and water supply wells.
(d)  Includes fracture stimulation and well servicing equipment that is owned by wholly-owned subsidiaries that provide pressure 
pumping and well services on Company-operated properties. As of December 31, 2017, 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.

(e)  Information technology costs include hardware and software costs associated with the Company's existing systems and in-
progress system upgrades. As of December 31, 2017 and 2016, $93 million and $37 million, respectively, had not yet been 
placed into service. 

 The primary purpose of the Company's sand mine, pressure pumping, well services and water infrastructure operations is 
to assist in the execution of 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 
profits 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,  vehicles,  furniture  and  fixtures  and  information  technology  assets  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.

80

PIONEER NATURAL RESOURCES COMPANY
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2017, 2016 and 2015

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 January and June of 2016, the Company issued 13.8 million and 6.0 million shares of its 
common stock, respectively, and realized cash proceeds of $1.6 billion and $937 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 or export 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. Transportation costs associated with purchases and 
sales of third-party oil and gas are presented on a net basis in purchased oil and gas expense. 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 provision for income taxes is determined using the asset and liability approach of accounting for income 
taxes. Under this approach, deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts 
of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes and net operating loss and 
tax credit carryforwards. The amount of deferred taxes on these temporary differences is determined using the tax rates that are 
expected to apply to the period when the asset is realized or the liability is settled, as applicable, based on tax rates and laws in 
the respective tax jurisdiction enacted as of the balance sheet date.

The Company reviews its deferred tax assets for recoverability and establishes a valuation allowance based on projected 
future taxable income, applicable tax strategies and the expected timing of the reversals of existing temporary differences. A 
valuation allowance is provided when it is more likely than not (likelihood of greater than 50%) that some portion or all of the 
deferred tax assets will not be realized.

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. 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 consolidated 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.

81

PIONEER NATURAL RESOURCES COMPANY
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2017, 2016 and 2015

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.

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,  the  Company  recognized  $4  million  of  restructuring  charges  in  other  expense  in  the  accompanying  consolidated 
statements of operations during the year ended December 31, 2016. 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, the Company recognized $23 million of restructuring charges in other 
expense in the accompanying consolidated statements of operations during the year ended December 31, 2015. 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, 2017 and 2016, the Company had $1 million and $2 million of restructuring liabilities, respectively, 
primarily related to future lease obligations recorded in other current and noncurrent liabilities in the accompanying consolidated 
balance sheets.

New accounting pronouncements. In March 2016, the Financial Accounting Standards Board ("FASB") issued Accounting 
Standards Update ("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. The Company 
adopted this standard on January 1, 2017. See Note O for discussion on the impact of the adoption to the Company's income tax 
benefit.

In February 2016, FASB issued ASU 2016-02, "Leases (Topic 842)." 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 accounting 
for lease expenses. This update is effective for fiscal years beginning after December 15, 2018 and for interim periods beginning 
the following year. This update should be applied using a modified retrospective approach, and early adoption is permitted. The 
Company anticipates that the adoption of ASU 2016-02 for its leasing arrangements will likely (i) increase the Company's recorded 
assets and liabilities, (ii) increase depreciation, depletion and amortization expense, (iii) increase interest expense and (iv) decrease 
82

PIONEER NATURAL RESOURCES COMPANY
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2017, 2016 and 2015

lease/rental expense. The Company is currently evaluating each of its lease arrangements and has not determined the aggregate 
amount of change expected for each category. In January 2018, the FASB issued ASU 2018-01, which permits an entity to elect 
an optional transition practical expedient to not evaluate land easements that exist or expire before the Company's adoption of 
Topic 842 and that were not previously accounted for as leases under Topic 840. The Company intends to elect this transition 
provision.

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 addition, 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. 

During the Company's implementation of Topic 606, it identified the following revenue streams: oil, NGL and gas sales 
and sales of purchased oil and gas. The Company's analysis of contracts with customers in accordance with the requirements of 
Topic 606 is complete. The Company has not identified any changes to the timing of revenue recognition based upon the requirements 
of Topic 606 that would have a material impact on the Company's consolidated financial statements. The Company will utilize 
the modified approach to adopt the new standards on their January 1, 2018 effective date. The Company continues to review its 
implementation documentation and its evaluation of the new disclosure requirements is ongoing.

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. 
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 allocation of the acquisition price to the assets acquired and the liabilities assumed based 

on their fair value at the acquisition date (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.  The  operating  results 
attributable to the acquired assets and liabilities assumed are included in the Company's accompanying consolidated statements 
of operations since the date of acquisition.

83

PIONEER NATURAL RESOURCES COMPANY
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2017, 2016 and 2015

In connection with the acquisition, the Company incurred acquisition related costs (primarily consulting, advisory and legal 
fees) of $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.

Divestitures Recorded in Continuing Operations

The Company recorded net gains on the disposition of assets in continuing operations of $208 million, $2 million and $782 
million during the years ended December 31, 2017, 2016 and 2015, respectively. The following describes the significant divestitures 
included in continuing operations:

• 

In April 2017, the Company completed the sale of approximately 20,500 acres in the Martin County region of the 
Permian Basin, with net production of approximately1,500 BOEPD, to an unaffiliated third party for cash proceeds of 
$264 million. The sale resulted in a gain of $194 million. In conjunction with the divestiture, the Company reduced 
the carrying value of goodwill by $2 million, reflecting the portion of the Company's goodwill related to the assets 
sold.

•  EFS Midstream. In July 2015, the Company completed the sale of its 50.1 percent interest in EFS Midstream LLC 
("EFS Midstream"), which was accounted for under the equity method of accounting, 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 gain of $777 
million during 2015. 

•  Other. During 2017, 2016 and 2015, the Company sold other proved and unproved properties, inventory and other 
property and equipment and recorded net gains of $14 million, $2 million and $5 million, respectively. The net gain of 
$14 million for 2017 is primarily related to the sale of nonstrategic proved and unproved properties in the Permian 
Basin for cash proceeds of $77 million.

Divestitures Recorded in Discontinued Operations

In 2015, the Company recognized losses from discontinued operations, net of tax, of $7 million related to plugging and 
abandonment obligations associated with two Gulf of Mexico wells that Pioneer divested in 2009. The results of operations for 
these assets were recorded in discontinued operations upon their divestiture and therefore the costs incurred subsequent to their 
divestiture are reflected as discontinued operations in the accompanying consolidated statements of operations.

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.

84

PIONEER NATURAL RESOURCES COMPANY
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2017, 2016 and 2015

The following tables present the Company's assets and liabilities that are measured at fair value on a recurring basis as of 

December 31, 2017 and 2016 for each of the fair value hierarchy levels:

Fair Value Measurements at December 31, 2017 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,
2017

Assets:

Commodity derivatives
Deferred compensation plan assets

Total assets

Liabilities:

Commodity derivatives

Total liabilities

Total recurring fair value measurements

$

$

— $
95
95

—
—
95

$

(in millions)

$

11
—
11

255
255
(244) $

— $
—
—

—
—
— $

11
95
106

255
255
(149)

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

$

$

— $
—
83
83

—
—
83

$

(in millions)

$

8
6
—
14

84
84
(70) $

— $
—
—
—

—
—
— $

8
6
83
97

84
84
13

Commodity derivatives. The Company's commodity derivatives represent oil, NGL and gas 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, 2017 and 2016, the significant inputs to these asset exchange values represented Level 
1 independent active exchange market price inputs. 

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 

85

 
 
 
 
 
 
PIONEER NATURAL RESOURCES COMPANY
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2017, 2016 and 2015

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, 2017, 2016 and 2015, the Company recognized noncash impairment 
charges of $2 million, $8 million and $71 million, respectively, primarily to reduce the carrying value of its excess 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 noncash impairment charges to reduce the carrying values of (i) the Raton field during the year ended December 31, 
2017, (ii) the West Panhandle field during the year ended December 31, 2016 and (iii) the Eagle Ford Shale field, the South Texas 
- Other field and the West Panhandle field during the year ended December 31, 2015.

The Company calculated the fair values of the Raton field, 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, (ii) capital expenditures, (iii) production costs 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 2017, 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:

Fair
Value

Fair Value
Adjustment

Management's Price Outlooks

Oil

Gas

Raton
West Panhandle
South Texas - Eagle Ford Shale
South Texas - Other
West Panhandle

March 2017
March 2016
December 2015
September 2015
March 2015

$
$
$
$
$

186
33
483
88
61

$
$
$
$
$

(285) $
(32) $
(846) $
(72) $
(138) $

53.65
49.77
52.82
57.41
65.02

$
$
$
$
$

3.00
3.24
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.

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 as a result of the operator curtailing operations in the area and 
Management's Price Outlooks. During 2015, the Company recorded impairment charges of $7 million to impair 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. The Company's impairment 
charges for unproved oil and gas properties are reported in exploration and abandonments in the accompanying consolidated 
statements of operations. 

86

PIONEER NATURAL RESOURCES COMPANY
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2017, 2016 and 2015

 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, 2017 and 2016 are as follows: 

December 31, 2017

December 31, 2016

Carrying
Value

Fair
Value

Carrying
Value

Fair
Value

Commercial paper, corporate bonds and time deposits
Current portion of long-term debt
Long-term debt

$
$
$

1,284
449
2,283

$
$
$

(in millions)

1,282
457
2,479

$
$
$

1,906
485
2,728

$
$
$

1,901
490
2,956

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 carrying values of held-to-maturity investments are adjusted for amortization of premiums and accretion 
of discounts over the remaining life of the investment. 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 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 tables provide the components of the Company's cash and cash equivalents and investments as of 
December 31, 2017 and 2016:

Consolidated Balance Sheet Location

Cash and cash equivalents
Short-term investments
Long-term investments

Consolidated Balance Sheet Location

Cash and cash equivalents
Short-term investments
Long-term investments

$

$

$

$

Cash

Commercial
Paper

December 31, 2017

Corporate
Bonds
(in millions)

Time
Deposits

Total

846
—
—
846

$

$

— $

124
—
124

$

— $
647
66
713

$

50
447
—
497

December 31, 2016

Corporate
Bonds
(in millions)
$

Cash

Commercial
Paper

873
—
—
873

$

$

45
368
—
413

$

— $
691
420
1,111

$

Time
Deposits

200
382
—
582

$

$

$

$

896
1,218
66
2,180

Total

1,118
1,441
420
2,979

Debt obligations. The Company's debt obligations are composed of its senior notes whose fair value is determined utilizing 
inputs that are Level 2 measurements in the fair value hierarchy. The Company's senior notes represent debt securities that are 
quoted but not actively traded on major exchanges; therefore, 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, 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, 2017, 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.

87

 
 
PIONEER NATURAL RESOURCES COMPANY
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2017, 2016 and 2015

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.

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, 2017 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

____________________

2018

First
Quarter

Second
Quarter

Third
Quarter

Fourth
Quarter

Year Ending
December 31,
2019

3,000

3,000

3,000

3,000

$
$

$
$
$

58.05
45.00

149,000

57.79
47.42
37.38

$
$

$
$
$

58.05
45.00

149,000

57.79
47.42
37.38

$
$

$
$
$

58.05
45.00

154,000

57.70
47.34
37.31

$
$

$
$
$

58.05
45.00

159,000

57.62
47.26
37.23

$
$

$
$
$

—

—
—

40,000

59.62
52.00
42.00

(a)  Subsequent to December 31, 2017, the Company entered into additional oil collar contracts with short puts for 25,000 
Bbl per day of 2019 production with a ceiling price of $62.55 per Bbl, a floor price of $53.80 per Bbl and a short put 
price of $43.80 per Bbl.

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, 2017, 2016 and 2015

The following table sets forth the volumes per day associated with the Company's outstanding NGL derivative contracts as 

of December 31, 2017 and the weighted average NGL prices for those contracts:

Ethane basis swap contracts (a):

Volume (MMBtu)
Price differential ($/MMBtu)

____________________

2018

First
Quarter

Second
Quarter

Third
Quarter

Fourth
Quarter

Year Ending
December 31,
2019

6,920
1.60

$

6,920
1.60

$

6,920
1.60

$

6,920
1.60

$

$

6,920
1.60

(a)   The ethane basis swap contracts reduce the price volatility of ethane forecasted for sale by the Company at Mont Belvieu, 
Texas-posted prices. The ethane basis swap contracts 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, 2017, 2016 and 2015

The following table sets forth the volumes per day associated with the Company's outstanding gas derivative contracts as 

of December 31, 2017 and the weighted average gas prices for those contracts:

Swap contracts (a):
Volume (MMBtu)
Price per MMBtu

Collar contracts with short puts:

Volume (MMBtu)
Price per MMBtu:

Ceiling
Floor
Short put

Basis swap contracts:

Southern California index swap volume (MMBtu)

(b)(c)

Price differential ($/MMBtu)
Houston Ship Channel index swap volume

(MMBtu) (b)(d)

Price differential ($/MMBtu)

____________________

2018

First
Quarter

Second
Quarter

Third
Quarter

Fourth
Quarter

Year Ending
December 31,
2019

30,000
3.37

100,000

3.82
3.15
2.57

80,000
0.34

3,444
0.63

$

$
$
$

$

$

$

$
$
$

$

$

100,000
3.00

50,000

3.40
2.75
2.25

40,000
0.30

$

$
$
$

$

100,000
3.00

50,000

3.40
2.75
2.25

80,000
0.30

$

$
$
$

$

100,000
3.00

50,000

3.40
2.75
2.25

53,261
0.43

$

$
$
$

$

—
— $

—
— $

—
— $

—
—

—

—
—
—

80,000
0.31

—
—

(a)  Subsequent to December 31, 2017, the Company entered into additional swap contracts for 100,000 MMBtu per day of 

February 2018 production with a price of $3.46 per MMBtu.

(b)   The referenced basis swap contracts fix the basis differentials between Permian Basin index prices and southern California 
or Houston Ship Channel index prices for Permian Basin gas forecasted for sale in southern California or the Gulf Coast 
region.

(c)  Subsequent to December 31, 2017, the Company entered into additional basis swap contracts for 20,000 MMBtu per day 

of November 2018 through March 2019 production with a price differential of $0.77 per MMBtu.

(d)  Subsequent to December 31, 2017, the Company entered into additional basis swap contracts for 10,000 MMBtu per day 

of February 2018 production with a price differential of $0.82 per MMBtu.

Marketing derivatives. 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 swap contracts 
to mitigate price risk. The following table sets forth the volumes per day associated with the Company's outstanding marketing 
derivative contracts as of December 31, 2017 and the weighted average prices for those contracts:

Average Daily Oil Transportation Commitments Associated

with Derivatives (Bbl):
Basis swap contracts:
Louisiana Light Sweet index swap volume (a)
Price differential ($/Bbl)
Magellan East Houston index swap volume (a)
Price differential ($/Bbl)

____________________

2018

First
Quarter

Second
Quarter

Third
Quarter

Fourth
Quarter

10,000
3.18
11,556
3.29

$

$

10,000
3.18
11,703
3.30

$

$

$

$

6,739
3.18
3,370
3.30

$

$

—
—
—
—

(a)  The referenced basis swap contracts fix the basis differentials between NYMEX WTI and Louisiana Light Sweet or 

Magellan East Houston oil prices for Permian Basin oil forecasted for sale in the Gulf Coast region.

Interest rate derivatives. During 2017, the Company was party to interest rate derivative contracts whereby the Company 
would have received the three-month LIBOR rate for the 10-year period from December 2017 through December 2027 in exchange 
90

PIONEER NATURAL RESOURCES COMPANY
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2017, 2016 and 2015

for paying a fixed interest rate of 1.81 percent on a notional amount of $100 million on December 15, 2017. During the fourth 
quarter of 2017, the Company liquidated its interest rate derivative contracts for cash proceeds of $5 million. As of December 31, 
2017, the Company did not have any interest rate 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 2017, the Company liquidated its diesel derivative swap contracts 
for cash proceeds of $2 million. As of December 31, 2017, the Company did not have any diesel derivative contracts outstanding. 

Tabular disclosure of derivative financial instruments. All of the Company's derivatives are accounted for as non-hedge 
derivatives as of December 31, 2017 and December 31, 2016 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. 

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, 2017

Type

Consolidated
Balance Sheet
Location

Fair
Value

Gross Amounts 
Offset in the 
Consolidated 
Balance Sheet

(in millions)

Net Fair Value 
Presented in the 
Consolidated 
Balance Sheet

Derivatives not designated as hedging instruments

Asset Derivatives:

Commodity price derivatives
Commodity price derivatives

Derivatives - current
Derivatives - noncurrent

Liability Derivatives:

Commodity price derivatives
Commodity price derivatives

Derivatives - current
Derivatives - noncurrent

$

$

$

$

13
3

234
26

(2) $
(3)

$

(2) $
(3)

$

11
—
11

232
23
255

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

(in millions)

Net Fair Value 
Presented in the 
Consolidated 
Balance Sheet

Derivatives not designated as hedging instruments

Asset Derivatives:

Commodity price derivatives
Interest rate derivatives

Derivatives - current
Derivatives - current

Liability Derivatives:

Commodity price derivatives
Commodity price derivatives

Derivatives - current
Derivatives - noncurrent

$

$

$

$

33
6

102
7

(25) $
—

$

(25) $
—

$

8
6
14

77
7
84

91

 
 
 
 
PIONEER NATURAL RESOURCES COMPANY
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2017, 2016 and 2015

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,

2017

2016
(in millions)

2015

$

$

(99) $
(1)
(100) $

(174) $
13
(161) $

873
6
879

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.

The following table provides the Company's net derivative assets or liabilities by counterparty as of December 31, 2017:

Net Assets (Liabilities)
(in millions)

Macquarie Bank
BMO Financial Group
JP Morgan Chase
Citibank, N.A.
Morgan Stanley
J. Aron & Company
BNP Paribas
Wells Fargo Bank, N.A.
Merrill Lynch
Nextera Energy
Scotia Bank
Societe Generale
JP Morgan Ventures Energy Corp
Toronto Dominion
Total

NOTE F.    Exploratory Well Costs

$

$

(31)
(30)
(28)
(28)
(21)
(21)
(20)
(20)
(20)
(17)
(5)
(4)
(2)
3
(244)

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.

92

 
 
 
 
PIONEER NATURAL RESOURCES COMPANY
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2017, 2016 and 2015

The following table reflects the Company's capitalized exploratory well and project activity during each of the years ended 

December 31, 2017, 2016 and 2015: 

Beginning capitalized exploratory well costs

Additions to exploratory well costs pending the determination of proved reserves
Reclassification due to determination of proved reserves
Exploratory well costs charged to exploration and abandonment expense

Ending capitalized exploratory well costs

Year Ended December 31,

2017

$

$

323
1,956
(1,764)
(10)
505

2016
(in millions)
306
$
1,387
(1,369)
(1)
323

$

$

$

2015

305
1,178
(1,160)
(17)
306

The following table provides an aging, as of December 31, 2017, 2016 and 2015 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:

As of December 31,

2017

2016
(in millions, except well counts)

2015

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

$

$

$

$

493
12
505

7

$

$

318
5
323

3

303
3
306

1

The projects with exploratory well costs that have been suspended for a period greater than one year at December 31, 2017 
are in the Eagle Ford Shale area. The Company is evaluating both the well performance of similar wells completed in 2017 and 
whether to drill additional wells near these wells in order for all of the wells in the area to be fracture stimulated as a package, 
thereby improving the resource recovery for the area. The Company expects to complete its evaluation of these seven wells during 
2018.

93

 
 
 
 
 
 
PIONEER NATURAL RESOURCES COMPANY
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2017, 2016 and 2015

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, 2017 and 2016:

Outstanding debt principal balances:
6.65% senior notes due 2017 (a)
6.875% senior notes due 2018 (b)
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,

2017

2016

(in millions)

$

$

— $
450
450
500
600
500
250
2,750
(18)
2,732
449
2,283

$

485
450
450
500
600
500
250
3,235
(22)
3,213
485
2,728

(a)  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.

(b)  The 6.875% senior notes, net of $106 thousand of unamortized issuance costs and issuance discounts, are classified as 

current in the accompanying consolidated balance sheets as of December 31, 2017.

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 (the "Syndicate"), 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 costs along with those unamortized issuance costs that remained from the issuance of the prior agreement. As 
of December 31, 2017, 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. Revolving loans represent 
loans made ratably by the Syndicate in accordance with their respective commitments under the Credit Facility and 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 0.25 percent based upon the Company's debt rating or (b) a base Eurodollar rate, substantially equal to 
LIBOR, plus a margin (the "Applicable Margin"), which is currently 1.25 percent and is also determined by the Company's debt 
rating. Swing line loans represent loans made by a subset of the lenders in the Syndicate and may not exceed $150 million. 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 0.15 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, 2017, the Company was in compliance with all of its debt covenants.

Senior notes. The Company's 6.65% senior notes (the "6.65% Senior Notes") and 5.875% senior notes (the "5.875% Senior 
Notes") matured and were repaid in March 2017 and July 2016, respectively. The Company funded both the $485 million repayment 
of the 6.65% Senior Notes and the $455 million repayment of the 5.875% Senior Notes with cash on hand. The Company's 6.875%

94

 
 
 
PIONEER NATURAL RESOURCES COMPANY
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2017, 2016 and 2015

senior notes (the "6.875% Senior Notes"), with an outstanding debt principal balance of $450 million, will mature in May 2018. 
The 6.875% Senior Notes are classified as current in the accompanying consolidated balance sheets as of December 31, 2017.

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, 2017, are as follows (in millions):

2018
2019
2020
2021
2022
Thereafter

$
$
$
$
$
$

450
—
450
500
600
750

Interest expense. The following amounts have been incurred and charged to interest expense for the years ended December 

31, 2017, 2016 and 2015:

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,

2017

2016

2015

(in millions)
196
$
9
4
2
211
(4)
207

$

$

$

164
1
4
(9)
160
(7)
153

$

$

148
13
5
25
191
(4)
187

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, 2017, 2016 and 2015, 
respectively.

95

 
 
 
PIONEER NATURAL RESOURCES COMPANY
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2017, 2016 and 2015

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, 2017, 2016 and 2015, the 
Company recognized compensation expense of $25 million, $23 million and $31 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, 2017:

Approved and authorized awards
Awards issued under plan
Awards available for future grant

12,600,000
(7,657,755)
4,942,245

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, 2017:

Approved and authorized shares
Shares issued
Shares available for future issuance

1,250,000
(951,285)
298,715

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, 2017, 2016 and 2015:

Restricted stock-Equity Awards
Restricted stock-Liability Awards
Stock options (a)
Performance unit awards
ESPP
Total
Income tax benefit

_____________________

96

2015

2017

Year Ended December 31,

2016
(in millions)
66
$
24
—
21
2
113
34

$
$

$

$
$

60
24
—
17
2
103
19

$

$
$

70
22
—
18
2
112
34

 
 
PIONEER NATURAL RESOURCES COMPANY
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2017, 2016 and 2015

(a)  Cash proceeds received from stock option exercises during 2017 and 2016 amounted to $300 thousand and $1 million, 

respectively. There were no stock option exercises during 2015.

As of December 31, 2017, there was $94 million of unrecognized stock-based compensation expense related to unvested 
share-based compensation plans, including $22 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 2017, the Company awarded 450,619 restricted shares or units of the Company's common 
stock as compensation to directors, officers and employees of the Company (including 117,984 shares or units representing Liability 
Awards). The Company's issued shares, as reflected in the accompanying consolidated balance sheet as of December 31, 2017, do 
not include 77,727 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, 2017:

Outstanding at beginning of year

Shares granted
Shares forfeited
Shares vested

Outstanding at end of year

Equity Awards

Liability Awards

Number of
Shares

Weighted
Average Grant-
Date Fair
Value

Number of
Shares

$
1,077,227
$
332,635
(33,283) $
(460,356) $
$
916,223

143.39
180.50
153.17
153.06
151.71

290,552
117,984
(20,687)
(135,114)
252,735

The weighted average grant-date fair value of restricted stock equity awards awarded during 2017, 2016 and 2015 was 
$180.50, $122.72 and $153.55, respectively. The grant-date fair value of restricted stock equity awards that vested during 2017, 
2016 and 2015 was $70 million, $66 million and $76 million, respectively.

As of December 31, 2017 and 2016, accounts payable – due to affiliates in the accompanying consolidated balance sheets 
includes $20 million and $22 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 
2017, 2016 and 2015 was $20 million, $18 million and $29 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, 2017 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

Weighted Average
Remaining
Contractual Life
(in years)

Aggregate
Intrinsic Value
(in millions)

159,378
$
(20,885) $
$
138,493
$
138,493

89.03
15.62
100.10
100.10

97

3.61
3.61

$
$

10
10

 
 
 
 
 
PIONEER NATURAL RESOURCES COMPANY
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2017, 2016 and 2015

The Company has not granted stock options since February 2012. The intrinsic value of options exercised during 2017 and 
2016 was $3 million and $6 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  2017,  2016  and  2015,  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 2017, 2016 and 2015
performance unit awards were $258.27, $203.69 and $222.33, 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 2017, 2016 and 2015: 

Risk-free interest rate

Range of volatilities

2017
1.42%
33.6%  - 58.2%

2016
0.96%
28.3%  - 53.6%

2015
1.03%
26.1%  - 41.3%

The following table summarizes the performance unit activity for the year ended December 31, 2017:

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

178,556
59,044

$
$
— $
(74,442) $
$
163,158

211.46
258.27
—
222.33
223.45

(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)  On December 31, 2017, the service period lapsed on 78,796 performance unit awards that earned 1.50 shares for each vested 
award, representing 118,198 aggregate shares of common stock issued on January 2, 2018. The vested performance units 
that earned 1.50 shares for each vested award included 74,442 units vested in the current year, 4,029 units that vested in 
2016 and 325 units that vested in 2015 upon the retirement of the officers to whom the performance unit awards were 
granted.  

The grant-date fair value of performance units that vested during 2017, 2016 and 2015 was $18 million, $15 million and 

$17 million, respectively.

98

PIONEER NATURAL RESOURCES COMPANY
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2017, 2016 and 2015

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, 2017, 2016 and 2015:

Beginning asset retirement obligations
Obligations assumed in acquisitions
New wells placed on production
Changes in estimates (a)
Dispositions
Liabilities settled
Accretion of discount

Ending asset retirement obligations

 _____________________

2017

Year Ended December 31,
2016
(in millions)

2015

297
—
3
(9)
(7)
(32)
19
271

$

$

285
2
2
17
—
(27)
18
297

$

$

189
—
4
103
—
(23)
12
285

$

$

(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 decrease in 2017 was 
primarily due to a increase in commodity prices, which has the effect of lengthening the economic life of the Company's 
producing wells. The increase in 2016 was 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, 2017 and 2016, the current portions of the Company's asset retirement obligations were $41 million

and $39 million, respectively. 

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 
$32 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 may retain 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.

99

 
 
 
PIONEER NATURAL RESOURCES COMPANY
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2017, 2016 and 2015

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. Certain of the drilling rig day rates are based 
upon oil prices and are subject to change over the lives of the commitments. 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. 

Lease agreements. The Company leases equipment and office facilities under operating leases. Rent expense for the years 

ended December 31, 2017, 2016 and 2015 was $69 million, $59 million and $58 million, respectively.

In June 2017, the Company entered into a 20-year operating lease for the Company's new corporate headquarters that is 
currently being constructed in Irving, Texas. Annual base rent is expected to be $33 million and lease payments are expected to 
commence once the building is complete, which is anticipated to occur during the second half of 2019. The Company has a variable 
equity interest in the entity that is constructing the building. The Company is not the primary beneficiary of the variable interest 
entity and only has a profit sharing interest after certain economic returns are achieved. The Company has no exposure to the 
variable interest entity's losses or future liabilities, if any. The Company is the deemed owner of the building (for accounting 
purposes) during the construction period and is following the build-to-suit accounting guidance. Accordingly, as of December 31, 
2017, the Company has capitalized $57 million of construction costs, including capitalized interest, within other property and 
equipment and has recognized a corresponding build-to-suit lease liability of $56 million. The recording of these assets and liabilities 
are considered noncash investing (other than capitalized interest) and financing items, respectively, for purposes of the consolidated 
statements of cash flows.

Firm purchase, gathering, processing, transportation and fractionation commitments. The Company from time to time 
enters into, and as of December 31, 2017 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, storage and fractionation. These commitments 
are normal and customary for the Company's business activities. Certain future minimum gathering, processing, transportation, 
storage and fractionation fees are based upon rates and tariffs that are subject to change over the lives of the commitments.

The Company's minimum commitments as of December 31, 2017 are as follows: 

Drilling
Commitments

Lease Commitments

Purchase, Gathering,
Processing,
Transportation,
Storage and
Fractionation
Commitments

Total

2018
2019
2020
2021
2022
Thereafter
Total minimum commitments

$
$
$
$
$
$
$

$
93
$
41
37
$
— $
— $
— $
$
171

(in millions)

27
42
53
40
37
680
879

$
$
$
$
$
$
$

568
619
672
627
476
1,554
4,516

$
$
$
$
$
$
$

688
702
762
667
513
2,234
5,566

100

 
 
PIONEER NATURAL RESOURCES COMPANY
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2017, 2016 and 2015

Delivery commitments. The above commitments include demand fees associated with volume delivery commitments 

that are primarily related to the Permian Basin. 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. The Company's delivery commitments as of December 31, 2017 are as follows:

2018
2019
2020
2021
2022
2023
2024

Oil

Gas

(MBbls per day)

(MMBtu per day)

66,685
63,356
68,347
70,000
30,575
—
—

—
75,342
100,000
100,000
100,000
100,000
24,863

NOTE K.    Related Party Transactions

 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 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, the Company 
received $2 million of fixed payments and $9 million of variable payments, 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 of gathering and treating fees during 2015 prior to its sale. Such amounts were expensed as oil and gas 
production costs in the accompanying consolidated statements of operations.

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. 

101

 
PIONEER NATURAL RESOURCES COMPANY
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2017, 2016 and 2015

The following purchasers individually accounted for ten percent or more of the Company's consolidated oil, NGL and gas 

production revenues in at least one of the three years ended December 31, 2017:

Sunoco Logistics Partners L.P. (a)
Occidental Energy Marketing Inc.
Plains Marketing LP
Enterprise Products Partners L.P.

______________________

Year Ended December 31,

2017

2016

2015

21%
16%
14%
11%

19%
16%
16%
12%

18%
18%
22%
12%

(a)  Sunoco Logistics Partners L.P. ("Sunoco") acquired Vitol Inc.'s Permian Basin oil systems during the fourth quarter of 2016, 

and the Company's contracts with Vitol Inc. were 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  and  export  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, 
2017:

Occidental Energy Marketing Inc.
Valero Marketing and Supply Company
BP Energy
Exxon Mobil

Year Ended December 31,

2017

2016

2015

39%
14%
11%
11%

27%
17%
18%
23%

25%
50%
—%
12%

The presentation of certain purchases and sales of third-party oil and gas with the same counterparty has been revised in 
2016 and 2015 to present such transactions on a net basis in purchased oil and gas expense. Previously, these purchase and sales, 
which were carried out as purchases from and sales to the same third party, were separately stated on a gross basis in sales of 
purchased oil and gas and purchased oil and gas expense. See Note B for additional information about the revision of the Company's 
revenues and expenses associated with these transactions.

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.

102

 
 
 
 
PIONEER NATURAL RESOURCES COMPANY
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2017, 2016 and 2015

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, 2017, 2016 and 2015:

Interest income
Severance, sales and property tax refunds
Deferred compensation plan income
Other income
Equity interest in income of EFS Midstream (a)
Total interest and other income

 ______________________

Year Ended December 31,

2017

2016
(in millions)

2015

$

$

32
13
4
4
—
53

$

$

22
2
3
5
—
32

$

$

3
—
4
10
5
22

(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, 2017, 

2016 and 2015: 

Transportation commitment charges (a)
Other
Loss from vertical integration services (b)
Impairment of inventory and other property and equipment (c)
Idle drilling and well service equipment charges (d)
Restructuring charges (e)
Total other expense

____________________

Year Ended December 31,

2017

2016

(in millions)

2015

$

$

167
58
17
2
—
—
244

$

$

109
49
54
8
64
4
288

$

$

53
27
34
86
92
23
315

(a)  Primarily represents firm transportation payments on excess pipeline capacity commitments.
(b)  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, 2017, 2016 and 2015, these net losses include $140 million, $147 million and $298 million of gross 
vertical integration revenues, respectively, and $157 million, $201 million and $332 million of total vertical integration 
costs and expenses, respectively.

(c)  Primarily represents charges to reduce excess materials and supplies inventories to their market values for the years ended 
December 31, 2017, 2016 and 2015, respectively. See Note D for additional information on the fair value of material and 
supplies inventory.

(d)  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.

(e)  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.

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 

103

 
 
 
 
 
 
 
PIONEER NATURAL RESOURCES COMPANY
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2017, 2016 and 2015

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 tax refunds of $66 million
(net of tax payments) during 2016 and made current and estimated tax payments of nil and $43 million (net of tax refunds) during 
2017 and 2015, 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.

Enactment of the Tax Cuts and Jobs Act

On December 22, 2017, the United States enacted the Tax Cuts and Jobs Act (the "Tax Reform Legislation"), which introduces 

significant changes to the United States federal income tax law. The changes that most impact the Company include:

•  A permanent reduction in the federal corporate income tax rate from 35 percent to 21 percent. The rate reduction is 
effective for the Company as of January 1, 2018. The application of the rate change on the Company's existing 
deferred tax liabilities resulted in a $625 million income tax benefit to the Company during 2017.

•  The corporate alternative minimum tax ("AMT") for tax years beginning in January 1, 2018 has been repealed. The 
Tax  Reform  Legislation  provides  that  existing AMT  credit  carryovers  are  refundable  beginning  in  2018. As  of 
December 31, 2017, the Company had AMT credit carryovers of $20 million that are expected to be fully refunded 
by 2022.

•  The Tax Reform Legislation preserves the deductibility of intangible drilling costs and provides for 100 percent 
bonus depreciation on personal tangible property expenditures through 2022. The bonus depreciation percentage is 
phased down from 100 percent beginning in 2023 through 2026.

The Tax Reform Legislation is a comprehensive bill containing other provisions, such as limitations on the deductibility of 
interest expense and certain executive compensation, that are not expected to materially affect Pioneer. The ultimate impact of the 
Tax Reform Legislation may differ from the Company's estimates as of December 31, 2017 due to changes in the interpretations 
and assumptions made by the Company as well as additional regulatory guidance that may be issued.

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, 
2017 and 2016, the Company had unrecognized tax benefits of $124 million and $112 million, respectively, 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 is unable to 
estimate the range of a reasonably likely outcome at this time. The Company expects to substantially resolve the uncertainties 
associated with the unrecognized tax benefits by December 2018. 

104

PIONEER NATURAL RESOURCES COMPANY
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2017, 2016 and 2015

The following table sets forth changes in the Company's unrecognized tax benefits:

Balance at beginning of year

Additions based on tax positions related to the current year
Reductions for tax positions of prior years

Balance at end of year

Other Tax Matters 

Year Ended December 31,

2017

2016

$

$

112
12
—
124

$

$

—
112
—
112

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, 2017, 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

2012
2013

The Company's income tax benefit and amounts separately allocated were attributable to the following items for the years 

ended December 31, 2017, 2016 and 2015:

Income tax benefit from continuing operations
Income tax benefit from discontinued operations

Year Ended December 31,

2017

2016

2015

524

(in millions)
403
$
$
— $
— $

$
$

155
2

The Company's income tax (provision) benefit attributable to income from continuing operations consisted of the following 

for the years ended December 31, 2017, 2016 and 2015:

Current:

U.S. federal
U.S. state

Deferred:

U.S. federal
U.S. state

Income tax benefit from continuing operations

Year Ended December 31,

2017

2016

2015

(in millions)

$

$

5
—
5

526
(7)
519
524

$

$

22
2
24

375
4
379
403

$

$

(22)
(1)
(23)

165
13
178
155

105

 
 
 
 
 
 
PIONEER NATURAL RESOURCES COMPANY
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2017, 2016 and 2015

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, 2017, 2016 and 2015:

Year Ended December 31,

2017

2016

2015

(in millions, except percentages)

Income (loss) from continuing operations attributable to common stockholders

before income taxes

$

309

$

(959)

$

(421)

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)
Change in federal income tax rate (a)

Equity compensation excess tax benefit (b)

Federal credit for increasing research activities (net of unrecognized tax benefits)
State credit for increasing research activities (net of unrecognized tax benefits and

federal tax)

Other
Income tax benefit from continuing operations
Effective income tax rate, excluding net income attributable to the noncontrolling

$

interests

____________________

35 %

(108)
(4)
(1)
625

9

6

—
(3)
524

$

35%
336
3
(3)
—

—

68

4
(5)
403

$

35%
147
8
—
—

—

—

—
—
155

(170)%

42%

37%

(a)  During 2017, the Company recognized a benefit of $625 million as a result of the December 22, 2017 Tax Reform Legislation 

that reduces the federal income tax rate beginning in 2018.

(b)  During 2017, the Company recognized excess tax benefits of $9 million associated with the adoption of ASU 2016-09, 
"Improvements  to  Employee  Share-Based  Payment  Accounting,"  which  requires  excess  tax  benefits  or  deficiencies 
associated with the vesting of long-term incentive awards to be recorded as income tax expense or benefit in the statement 
of operations rather than as an adjustment to additional paid-in capital in the balance sheet.

106

 
 
 
PIONEER NATURAL RESOURCES COMPANY
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2017, 2016 and 2015

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, 2017 and 2016:

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

Total deferred tax liabilities

Net deferred tax liability

____________________

December 31,

2017

2016

(in millions)

$

$

594
87
59
48
52
22
862

635
107
106
81
32
30
991

(1,640)

(2,184)

(121)
(1,761)

$

(899) $

(204)
(2,388)
(1,397)

(a)  Net operating loss carryforwards as of December 31, 2017 consist of $2.8 billion of U.S. federal NOLs, which expire 
between 2032 and 2037, and $164 million of Colorado NOLs, which expire between 2027 and 2037, and are net of a 
$6 million valuation allowance relating to $125 million of Colorado NOLs that the Company believes will more likely than 
not expire unutilized.

(b)  Credit carryforwards as of December 31, 2017 consist of U.S. federal credits for increasing research activities of $82 million
and Texas credits for increasing research activities of $5 million. The U.S. federal and state research credits as of December 
31, 2017 exclude $124 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.

107

 
 
 
PIONEER NATURAL RESOURCES COMPANY
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
December 31, 2017, 2016 and 2015

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, 2017, 2016 and 2015:

Year Ended December 31,

2017

2016

2015

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

______________________

$

$

833
(6)
827

—
827

$

(in millions)
$

(556) $
—
(556)
—
(556) $

(266)
—
(266)
(7)
(273)

(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 170 million, 166 million and 149 million for the 

years ended December 31, 2017, 2016 and 2015, respectively.

NOTE Q.    Subsequent Events

In February 2018, the Company announced its intention to divest its properties in South Texas, Raton and the West Panhandle 
field and focus its efforts and capital resources to its Permian Basin assets. No assurance can be given that the sales will be completed 
in accordance with the Company's plans or on terms and at prices acceptable to the Company.

In February 2018, the Board (i) declared a cash dividend of $0.16 per share on Pioneer’s outstanding common stock, payable 
April 12, 2018 to stockholders of record at the close of business on March 29, 2018 and (ii) approved a common stock repurchase 
program to offset the impact of dilution associated with annual employee stock awards. The stock repurchase program allows for 
up to $100 million of common stock to be repurchased during 2018.

108

 
 
PIONEER NATURAL RESOURCES COMPANY
UNAUDITED SUPPLEMENTARY INFORMATION
December 31, 2017, 2016 and 2015

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,

2017

2016

(in millions)

$

$

20,404
558
20,962
(9,196)
11,766

$

$

18,566
486
19,052
(8,211)
10,841

Year Ended December 31,

2017

2016
(in millions)

2015

$

$

8
128
2,033
628
2,797

$

$

78
368
1,454
509
2,409

$

$

9
27
1,245
894
2,175

(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

Reserve Quantity Information

Year Ended December 31,

2017

2016
(in millions)

2015

$

$

— $
2
(19)
(17) $

2
2
17
21

$

$

—
2
100
102

The estimates of the Company's proved reserves as of December 31, 2017, 2016 and 2015 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.

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 

109

 
 
 
 
 
 
 
 
 
PIONEER NATURAL RESOURCES COMPANY
UNAUDITED SUPPLEMENTARY INFORMATION
December 31, 2017, 2016 and 2015

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.

110

PIONEER NATURAL RESOURCES COMPANY
UNAUDITED SUPPLEMENTARY INFORMATION
December 31, 2017, 2016 and 2015

The following table provides a rollforward of total proved reserves for the years ended December 31, 2017, 2016 and 2015. 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").

2017

Year Ended December 31,

2016

2015

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

______________________

378,196

136,941

1,264,729

725,925

311,970

126,344

1,356,487

664,395

352,084

169,244

1,668,872

(57,878)

(20,078)

(143,464)

(101,867)

20,140

146,822

(4,899)

508

44,995

49,378

(918)

179

365,275

266,347

(4,898)

3,891

126,015

240,591

(6,633)

1,335

(48,926)

(3,912)

117,406

(908)

2,566

(15,922)

(139,510)

1,279

24,735

(238)

743

(76,998)

120,766

(1,377)

5,361

(88,100)

(15,466)

162,269

(1,376)

4,203

(38,452)

(82,816)

80,726

(16)

444

(14,086)

(54,439)

25,496

(3)

132

799,473

(77,067)

(147,173)

(309,947)

(188,913)

143,991

130,221

(15)

759

(21)

702

482,889

210,497

1,751,880

985,366

378,196

136,941

1,264,729

725,925

311,970

126,344

1,356,487

664,395

(a)  The proved gas reserves as of December 31, 2017, 2016 and 2015 include 171,623 MMcf, 137,853 MMcf and 144,955 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.

(b)  Production for 2017, 2016 and 2015 includes 14,799 MMcf, 15,082 MMcf and 15,531 MMcf of field fuel, respectively.

111

 
 
 
PIONEER NATURAL RESOURCES COMPANY
UNAUDITED SUPPLEMENTARY INFORMATION
December 31, 2017, 2016 and 2015

Revisions  of  previous  estimates.  Revisions  of  previous  estimates  for  2017  were  comprised  of  52  million  barrels  of  oil 
equivalent ("MMBOE") of positive price revisions due to 20 percent increases in both the NYMEX oil and NYMEX gas prices 
that were used to determine proved oil and gas reserves for 2017, as compared to 2016, in addition to 74 MMBOE of positive 
revisions that were primarily attributable to improved performance from horizontal wells placed on production in the Spraberry/
Wolfcamp prior to 2017 and, to a lesser extent, reductions in costs (based on the Company's cost reduction initiatives during 2017) 
that had the effect of extending the economic lives of the Company's producing wells. The December 31, 2017 NYMEX price 
used for oil and gas reserve preparation based upon SEC guidelines was $51.34 per barrel of oil and $2.98 per Mcf of gas, compared 
to $42.82 per barrel of oil and $2.48 per Mcf of gas at December 31, 2016.

Revisions of previous estimates for 2016 were comprised of 58 million barrels of oil equivalent 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.

Extensions and discoveries. Extensions and discoveries for 2017, 2016 and 2015 were primarily comprised of proved reserve 
additions attributable to the Company's successful horizontal drilling program in the Spraberry/Wolfcamp and Eagle Ford Shale 
areas.

Sales of minerals-in-place. Sales of minerals-in-place in 2017 were primarily related to the sale of approximately 20,500 
acres in the Martin County region of the Permian Basin. 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 2017, 2016 and 2015 were primarily attributable to 

acquisitions in the Company's Spraberry/Wolfcamp area.

112

PIONEER NATURAL RESOURCES COMPANY
UNAUDITED SUPPLEMENTARY INFORMATION
December 31, 2017, 2016 and 2015

The  following  table  provides  the  Company's  proved  developed  and  proved  undeveloped  reserves  for  the  years  ended 

December 31, 2017, 2016 and 2015.

Proved Developed Reserves:

December 31, 2017
December 31, 2016
December 31, 2015

Proved Undeveloped Reserves:

December 31, 2017
December 31, 2016
December 31, 2015

Oil
(MBbls)

NGLs
(MBbls)

Gas
(MMcf)

Total
(MBOE)

442,364
343,515
266,657

40,525
34,681
45,313

189,434
126,928
112,376

1,629,451
1,215,861
1,284,680

21,063
10,013
13,968

122,429
48,868
71,807

903,373
673,085
593,146

81,993
52,840
71,249

The following table summarizes the Company's proved undeveloped reserves activity during the year ended December 31, 

2017 (in MBOE).  

Beginning proved undeveloped reserves

Revisions of previous estimates
Extensions and discoveries
Transfers to proved developed

Ending proved undeveloped reserves

52,840
(7,343)
51,609
(15,113)
81,993

As of December 31, 2017, the Company had 134 proved undeveloped well locations as compared to 90 and 138 at December 
31, 2016 and 2015, 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 2017 were comprised of the following items:

Revisions  of  previous  estimates.  Revisions  of  previous  estimates  were  primarily  comprised  of  7  MMBOE  of  negative 
revisions that were related to proved undeveloped reserves that were replaced based on the Company's successful 2017 drilling 
program. 

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 2017, the Company incurred $628 million of development 
costs and developed 29 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 2017.

113

 
PIONEER NATURAL RESOURCES COMPANY
UNAUDITED SUPPLEMENTARY INFORMATION
December 31, 2017, 2016 and 2015

 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, 2017 (dollars in millions):

Year Ended December 31, (a)
2018
2019
2020
2021
2022
Thereafter (b)

______________________ 

Estimated
Future
Production
(MBOE)

Future Cash
Inflows

Future
Production
Costs

Future
Development
Costs

3,065
8,597
9,873
8,258
7,931
44,269
81,993

$

$

111
281
327
262
242
1,462
2,685

$

$

19
58
64
56
57
356
610

$

$

231
215
151
67
77
11
752

$

Future Net
Cash Flows
$

(139)
8
112
139
108
1,095
1,323

(a)  Production and cash flows represent the drilling results from the respective year plus the incremental effects of proved 

undeveloped drilling beginning in 2018.

(b)  The $11 million of future development costs represents net abandonment costs in years beyond the forecasted years.

114

PIONEER NATURAL RESOURCES COMPANY
UNAUDITED SUPPLEMENTARY INFORMATION
December 31, 2017, 2016 and 2015

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, 2017, 2016 and 

2015, 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

__________________

2017

December 31,

2016
(in millions)

2015

$

$

31,716
(13,304)
(1,532)
(725)
16,155
(8,004)
8,151

$

$

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  

(a)  Includes $639 million, $603 million and $604 million of undiscounted future asset retirement expenditures estimated as of 
December 31, 2017, 2016 and 2015, respectively, using current estimates of future abandonment costs. See Note I for 
additional information regarding the Company's discounted asset retirement obligations.

115

 
 
PIONEER NATURAL RESOURCES COMPANY
UNAUDITED SUPPLEMENTARY INFORMATION
December 31, 2017, 2016 and 2015

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 (b)

Balance, beginning of year
Balance, end of year

__________________

Year Ended December 31,

2017

2016

(in millions)

2015

$

(2,713) $

(1,700) $

(1,314)

2,690
(130)
1,088
770
(621)
3,454
139
(57)
10
4,630
(669)
3,961
4,190
8,151

$

(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

$

(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.

(b)  Reflects the permanent reduction in the federal corporate income tax rate from 35 percent to 21 percent associated with the 

enactment of the Tax Cuts and Jobs Act. See Note O for additional information.

116

 
 
 
PIONEER NATURAL RESOURCES COMPANY
UNAUDITED SUPPLEMENTARY INFORMATION
December 31, 2017, 2016 and 2015

Selected Quarterly Financial Results

The following table provides selected quarterly financial results for the years ended December 31, 2017 and 2016, with 

adjustments to conform to the annual results: 

Quarter

First

Second

Third

Fourth

(in millions, except per share data)

Year Ended December 31, 2017:
Oil and gas revenues
Total revenues and other income:

As reported (a)

Adjustment for sales of purchased oil and gas (b)
As adjusted

Total costs and expenses:

As reported (c)

Adjustment for purchased oil and gas (b)
As adjusted

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

Basic
Diluted

Year Ended December 31, 2016:
Oil and gas revenues
Total revenues and other income:

As reported (a)

Adjustment for sales of purchased oil and gas (b)
As adjusted

Total costs and expenses:

As reported (c)

Adjustment for purchased oil and gas (b)
As adjusted

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

Basic
Diluted

_____________________

$

$

$

$

$
$

$
$

$

$

$
$

$
$

809

1,468
(168)
1,300

$

$

$

$

1,541
(168)
1,373

$
(42) $

768

1,630
(168)
1,462

1,276
(168)
1,108
233

(0.25) $
(0.25) $

1.36
1.36

409

$

613

685
(60)
625

$

786
(115)
671

$

$

$

$

$
$

$
$

$

$

1,093
(60)
1,033
$
(267) $

1,197
(115)
1,082
$
(268) $

855

1,460
(293)
1,167

$

$

$

$

1,494
(293)
1,201

$
(23) $

(0.13) $
(0.13) $

1,085

1,526
—
1,526

1,464
—
1,464
665

3.88
3.87

643

$

753

1,186
(129)
1,057

1,242
(129)
1,113
22

1,168
(140)
1,028

1,253
(140)
1,113
(44)

(0.26)
(0.26)

$

$
$

$
$

(1.65) $
(1.65) $

(1.63) $
(1.63) $

0.13
0.13

(a)  During 2017, the Company's total revenues and other income included net derivative gains of $151 million and $135 million  
during the first and second quarters, respectively, and net derivative losses of $133 million and $254 million during the 
third quarter and fourth quarters, respectively. 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. 

(b)  Represents the revision to present transportation costs associated with purchases and sales of third-party oil and gas on a 
net basis in purchased oil and gas expense. Previously, these transportation costs were separately stated on a gross basis in 
sales of purchased oil and gas and purchased oil and gas expense. See Note B for additional information about the revision 
of the Company's revenues and expenses associated with these transactions.

(c)  During the first quarter of 2017, the Company's total costs and expenses included charges of $285 million to impair the 
carrying value of proved properties in the Raton field. 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.

117

 
 
 
PIONEER NATURAL RESOURCES COMPANY

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, 2017 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, 2017, 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, 
2017, 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, 2017. The report, which expresses an unqualified opinion on the 
effectiveness of the Company's internal control over financial reporting as of December 31, 2017, is included in this Item under 
the heading "Report of Independent Registered Public Accounting Firm."

118

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Stockholders and the Board of Directors of Pioneer Natural Resources Company

Opinion on Internal Control over Financial Reporting 

We have audited Pioneer Natural Resources Company’s internal control over financial reporting as of December 31, 2017, 
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). In our opinion, Pioneer Natural Resources Company (the 
Company) maintained, in all material respects, effective internal control over financial reporting as of December 31, 2017, based 
on the COSO criteria. 

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) 
(PCAOB), the consolidated balance sheets of Pioneer Natural Resources Company as of December 31, 2017 and 2016, and the 
related consolidated statements of operations, equity and cash flows for each of the three years in the period ended December 31, 
2017, and the related notes and our report dated February 20, 2018 expressed an unqualified opinion thereon. 

Basis for Opinion 

The Company’s management is responsible for maintaining effective internal control over financial reporting and for its 
assessment of the effectiveness of internal control over financial reporting included in the accompanying Management’s Report 
of 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 are a public accounting firm registered with the PCAOB and are required to be independent 
with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the 
Securities and Exchange Commission and the PCAOB. 

We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform 
the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all 
material respects. 

Our audit 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. 

Definition and Limitations of Internal Control Over Financial Reporting 

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the 
reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally 
accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that 
(1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions 
of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation 
of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the 
company are being made only in accordance with authorizations of management and directors of the company; and (3) provide 
reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s 
assets that could have a material effect on the financial statements. 

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, 
projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because 
of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Dallas, Texas
February 20, 2018 

/s/ Ernst & Young LLP

119

PIONEER NATURAL RESOURCES COMPANY

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 2018 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 2018 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, 2017:

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)

138,493
—
138,493

$

$

100.10
—
100.10

4,942,245
298,715
5,240,960

Equity compensation plans approved by security holders:

Pioneer Natural Resources Company:

2006 Long-Term Incentive Plan (b)(c)
Employee Stock Purchase Plan (d)

Total

_______________________

(a)  There are no outstanding warrants or equity rights awarded under the Company's equity compensation plans. 
(b)  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. 

(c)  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, 2017.

(d)  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 951,285 cumulative shares issued through December 31, 2017. 

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 2018 and is incorporated herein by reference.

120

PIONEER NATURAL RESOURCES COMPANY

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 2018 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 2018 and is incorporated herein by reference.

ITEM 15.

EXHIBITS, FINANCIAL STATEMENT SCHEDULES

PART IV

(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, 2017 and 2016 
•  Consolidated Statements of Operations for the Years Ended December 31, 2017, 2016 and 2015 
•  Consolidated Statements of Equity for the Years Ended December 31, 2017, 2016 and 2015 
•  Consolidated Statements of Cash Flows for the Years Ended December 31, 2017, 2016 and 2015 
•  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 20, 2018.

(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. 

121

 
 
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

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CORPORATE INFORMATION

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ANNUAL MEETING

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