SCHEDULE 14A
                                 (RULE 14a-101)

                     INFORMATION REQUIRED IN PROXY STATEMENT

                            SCHEDULE 14a INFORMATION

           PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES
                      EXCHANGE ACT OF 1934 (AMENDMENT NO. )

Filed by the Registrant   [ X ]

Filed by a Party other than the Registrant   [    ]

Check the appropriate box:

[   ]  Preliminary Proxy Statement     [    ]  Confidential, for Use of the
                                                Commission Only (as permitted by
                                                Rule 14a-6(e)(2))
[ X ]  Definitive Proxy Statement
[   ]  Definitive Additional Materials
[   ]  Soliciting Material Pursuant to Rule 14a-11(c) or Rule 14a-12

                       Pioneer Natural Resources Company
                (Name of Registrant as Specified in Its Charter)
          -------------------------------------------------------------
    (Name of Person(s) Filing Proxy Statement, if Other Than the Registrant)

Payment of Filing Fee (Check the appropriate box):

[ X ]   No fee required.

[   ]   Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and o-11.

(1)     Title of each class of securities to which transaction applies:
        --------------------------------------------------------------

(2)     Aggregate number of securities to which transaction applies:
        --------------------------------------------------------------

(3)     Per  unit  price  or other  underlying  value  of  transaction  computed
        pursuant to  Exchange  Act Rule 0-11 (Set forth the amount  on which the
        filing fee is calculated and state how it was determined):
        --------------------------------------------------------------

(4)     Proposed maximum aggregate value of transaction:
        --------------------------------------------------------------

(5)     Total fee paid:
        --------------------------------------------------------------

[   ]   Fee paid previously with preliminary materials.

[   ]   Check box if any part of the fee is offset as provided  by  Exchange Act
        Rule 0-11(a)(2) and identify the filing for which the offsetting fee was
        paid previously.  Identify the previous filing by registration statement
        number, or the form or Schedule and the date of its filing.

(1)     Amount Previously Paid:
        --------------------------------------------------------------

(2)     Form, Schedule or Registration Statement No.:
        --------------------------------------------------------------

(3)     Filing Party:
        --------------------------------------------------------------

(4)     Date Filed:
        --------------------------------------------------------------







                        PIONEER NATURAL RESOURCES COMPANY
                           5205 N. O'Connor Boulevard
                                   Suite 1400
                               Irving, Texas 75039

                    NOTICE OF ANNUAL MEETING OF STOCKHOLDERS

To the Stockholders of Pioneer Natural Resources Company:

        Notice is hereby  given  that the  Annual  Meeting  of  Stockholders  of
Pioneer Natural Resources Company (the "Company") will be held in the Carrollton
Room at the Dallas  Marriott  Las Colinas  Hotel,  223 West Las  Colinas  Blvd.,
Irving, Texas 75039, on Thursday,  May 17, 2001, at 9:00 a.m. The Annual Meeting
is being held for the following purposes:

        1.     To elect two directors, each for a term of three years.

        2.     To ratify the  selection of Ernst & Young LLP as the  auditors of
               the Company for the current year.

        3.     To transact  such other business as may  properly come before the
               meeting.

        These proposals are described in the accompanying  proxy materials.  You
will be able to vote at the  Annual  Meeting  only if you are a  stockholder  of
record at the close of business on March 28, 2001.

                             YOUR VOTE IS IMPORTANT

        Please date,  sign,  and return the enclosed Proxy promptly so that your
shares may be voted in  accordance  with your wishes and so we may have a quorum
at the  Annual  Meeting.  Instead of  returning  the paper  proxy,  you may vote
through  the   Internet  by   accessing   our   transfer   agent's   website  at
www.continentalstock.com.  You will need the control numbers that are printed on
your personalized proxy card.


                                        By Order of the Board of Directors



                                        Mark L. Withrow, Secretary

Irving, Texas
April 9, 2001


                                        2





                        PIONEER NATURAL RESOURCES COMPANY
                            1400 Williams Square West
                          5205 North O'Connor Boulevard
                               Irving, Texas 75039

                                 PROXY STATEMENT

                       2001 ANNUAL MEETING OF STOCKHOLDERS

        The board of directors of Pioneer Natural  Resources Company (the "Board
of Directors")  requests your Proxy for the Annual Meeting of Stockholders  that
will be held at 9:00 a.m., on Thursday,  May 17, 2001, in the Carrollton Room at
the Dallas  Marriott  Las  Colinas  Hotel,  Irving,  Texas  75039  (the  "Annual
Meeting").  By granting the Proxy,  you authorize the persons named on the Proxy
to represent you and vote your shares at the Annual Meeting.  Those persons will
also be  authorized to vote your shares to adjourn the meeting from time to time
and to vote your shares at any adjournments or postponements of the meeting.

        You may grant your Proxy by signing,  dating and  returning the enclosed
paper proxy card.  Instead of returning the paper proxy card, you may complete a
proxy card  electronically  through the Internet by accessing the website of the
Company's transfer agent at www.continentalstock.com.  You will need the control
numbers that are printed on your  personalized  paper proxy card.  See "Internet
Voting."

        If you attend the Annual Meeting, you may vote in person. If you are not
present at the Annual Meeting, your shares may be voted only by a person to whom
you have given a proper proxy,  such as the  accompanying  Proxy or the Internet
Proxy. You may revoke the Proxy in writing at any time before it is exercised at
the Annual  Meeting by  delivering  to the  Secretary  of the  Company a written
notice of the  revocation,  or by signing and delivering to the Secretary of the
Company a proxy  with a later  date or by  submitting  your vote  electronically
through the Internet with a later date.  Your  attendance at the Annual  Meeting
will not revoke the Proxy unless you give written  notice of  revocation  to the
Secretary  of the Company  before the Proxy is exercised or unless you vote your
shares in person at the Annual Meeting.

        This Proxy Statement and the  accompanying  Notice of Annual Meeting and
Proxy are first being sent or given to  stockholders  of the Company on or about
April 9, 2001.

                                QUORUM AND VOTING

        Voting Stock. The Company has two outstanding classes of securities that
entitle  holders to vote  generally at meetings of the  Company's  stockholders:
common stock, par value $.01 per share; and Special  Preferred Voting Stock, par
value $.01 per share.  A single  share of Special  Preferred  Voting  Stock (the
"Voting  Share") was issued to Montreal Trust Company of Canada (the  "Trustee")
as trustee  under a Voting  and  Exchange  Trust  Agreement  for the  benefit of
holders of exchangeable shares issued by the Company's wholly-owned  subsidiary,
Pioneer Natural Resources Canada Inc., in connection with the Company's December
1997 acquisition of Chauvco Resources Ltd. The common stock and the Voting Share
vote together as a single class on all matters except when Delaware law requires
otherwise. Each share of common stock outstanding on the record date is entitled
to one vote.  The Voting  Share is  entitled  to one vote for each  exchangeable
share outstanding on the record date. The Trustee is required to vote the Voting
Share in the manner that holders of exchangeable shares instruct, and to abstain
from voting in proportion to the exchangeable  shares for which the Trustee does
not receive  instructions.  Accordingly,  references to  "stockholders"  in this
Proxy  Statement  include holders of common stock,  the Trustee,  and holders of
exchangeable  shares.  The  procedures  for  holders of  exchangeable  shares to
instruct  the Trustee  about voting at the Annual  Meeting are  explained in the
"Information  Statement for Holders of  Exchangeable  Shares of Pioneer  Natural
Resources  Canada  Inc." that is  enclosed  with this Proxy  Statement  only for
holders of exchangeable shares.

        Record Date. The record date for stockholders  entitled to notice of and
to vote at the Annual Meeting is the close of business on March 28, 2001. At the
record  date,  96,299,025  shares of  common  stock and one  Voting  Share  were
outstanding and entitled to be voted at the Annual Meeting.  At the record date,
1,940,656  exchangeable  shares  were  outstanding  and  entitled to give voting
instructions to the Trustee.  Accordingly,  98,239,681  votes are eligible to be
cast at the Annual Meeting.

                                        3






        Quorum and  Adjournments.  The presence,  in person or by proxy,  of the
holders of a majority of the votes  eligible to be cast at the Annual Meeting is
necessary to constitute a quorum at the Annual Meeting.

        If a quorum is not present,  the  stockholders  entitled to vote who are
present  in person or by proxy at the Annual  Meeting  have the power to adjourn
the Annual Meeting from time to time,  without notice other than an announcement
at the  Annual  Meeting,  until a quorum is  present.  At any  adjourned  Annual
Meeting at which a quorum is present,  any business may be transacted that might
have been transacted at the Annual Meeting as originally notified.

        Vote  Required.  Directors  will be elected by a plurality  of the votes
present and  entitled  to be voted at the Annual  Meeting.  Ratification  of the
selection of the  Company's  auditors will require the  affirmative  vote of the
holders of a majority of the shares present and voted at the Annual Meeting.  An
automated system that the Company's transfer agent administers will tabulate the
votes. Brokers who hold shares in street name for customers are required to vote
shares in accordance  with  instructions  received from the  beneficial  owners.
Brokers are permitted to vote on  discretionary  items if they have not received
instructions from the beneficial  owners,  but they are not permitted to vote (a
"broker  non-vote")  on  non-discretionary  items absent  instructions  from the
beneficial  owner.  Abstentions  and broker  non-votes will count in determining
whether a quorum is present at the Annual Meeting.  Both  abstentions and broker
non-votes  will not  have any  effect  on the  outcome  of  voting  on  director
elections.  For  purposes  of voting on the  ratification  of the  selection  of
auditors,  abstentions  will be included in the number of shares voting and will
have the effect of a vote against the proposal, and broker non-votes will not be
included in the number of shares voting and therefore will have no effect on the
outcome of the voting.

        Default Voting. A Proxy that is properly  completed and returned will be
voted at the Annual Meeting in accordance with the instructions on the Proxy. If
you  properly  complete  and return a Proxy,  but do not  indicate  any contrary
voting instructions, your shares will be voted as follows:

        o     FOR the election of the two persons named in this Proxy  Statement
              as the Board of  Directors'  nominees for election to the Board of
              Directors.

        o     FOR the  ratification  of the  selection  of Ernst & Young  LLP as
              the Company's auditors.

If any other business  properly comes before the  stockholders for a vote at the
meeting,  your shares will be voted in  accordance  with the  discretion  of the
holders of the Proxy.  The Board of  Directors  knows of no matters,  other than
those  previously  stated,  to be  presented  for  consideration  at the  Annual
Meeting.

                                    ITEM ONE

                              ELECTION OF DIRECTORS

        The Board of Directors has nominated the following  persons for election
as Class I  directors  of the  Company  with their terms to expire at the annual
meeting of stockholders in 2004 when their successors are elected and qualified:

                               R. Hartwell Gardner
                                James L. Houghton

        Both of  these  nominees  are  currently  serving  as  directors  of the
Company. Their biographical information is contained in "Directors and Executive
Officers."

        The  Board of  Directors  has no reason to  believe  that  either of its
nominees will be unable or unwilling to serve if elected.  If a nominee  becomes
unable or unwilling to accept  nomination or election,  either the number of the
Company's  directors  will be reduced or the persons acting under the Proxy will
vote for the  election  of a  substitute  nominee  that the  Board of  Directors
recommends.

        The  Board  of  Directors  recommends  that  stockholders  vote  FOR the
election of each of the nominees.


                                        4





                                    ITEM TWO

                              SELECTION OF AUDITORS

        The Board of Directors has selected Ernst & Young LLP as the auditors of
the  Company  for  2001.  Ernst & Young  LLP  audited  the  Company's  financial
statements for 2000,  1999 and 1998. The 2000 audit was completed on January 29,
2001.

Audit Fees

        The aggregate fees billed by Ernst & Young LLP for professional services
rendered for the audit of the Company's annual financial  statements and reports
on Forms 10-Q for 2000 were $420,000.

Financial Information Systems Design and Implementation Fees

        No services  were  performed  by, and no fees were  incurred to, Ernst &
Young  LLP  in  connection  with  financial   information   systems  design  and
implementation projects for 2000.

All Other Fees

        The aggregate fees for all other services  rendered by Ernst & Young LLP
for 2000 were  $512,228,  comprised  of $68,395 for tax  services,  $332,960 for
internal audit services and $110,873 for other professional services.

        The Company  expects that  representatives  of Ernst & Young LLP will be
present at the Annual Meeting to respond to appropriate  questions and to make a
statement if they desire to do so.

        The report of Ernst & Young LLP on the  Company's  financial  statements
for 2000,  1999 and 1998 did not contain an adverse  opinion or a disclaimer  of
opinion and was not  qualified or modified as to  uncertainty,  audit scope,  or
accounting principles.

        In connection with the audits of the Company's financial  statements for
2000, 1999 and 1998, there were no  disagreements  with Ernst & Young LLP on any
matters of accounting  principles or practices,  financial statement disclosure,
or auditing scope or procedures  which,  if not resolved to the  satisfaction of
such independent accountants,  would have caused such independent accountants to
make reference to the matter in their report.

        The  Board  of  Directors   recommends   that   stockholders   vote  FOR
ratification of the selection of Ernst & Young LLP.

                        DIRECTORS AND EXECUTIVE OFFICERS

        After the Annual Meeting,  assuming the stockholders  elect the nominees
of the Board of  Directors  as set forth in "Item One - Election of  Directors,"
the Board of Directors and executive officers of the Company will be:

          Name              Age                    Position

Scott D. Sheffield.......   48    Chairman of the Board, President and Chief
                                   Executive Officer
Timothy L. Dove..........   44    Executive Vice President and Chief Financial
                                   Officer
Dennis E. Fagerstone.....   52    Executive Vice President
Mark L. Withrow..........   53    Executive Vice President, General Counsel and
                                   Secretary
Danny L. Kellum..........   46    Executive Vice President - Domestic Operations
James R. Baroffio........   69    Director
R. Hartwell Gardner......   66    Director
James L. Houghton........   70    Director
Jerry P. Jones...........   69    Director
Charles E. Ramsey, Jr....   64    Director
Robert L. Stillwell......   64    Director

                                        5






        The Company has  classified  its Board of Directors  into three classes.
Directors  in each  class are  elected to serve for  three-year  terms and until
their  successors  are elected and  qualified.  Each year,  the directors of one
class stand for re-election as their terms of office expire. Messrs. Gardner and
Houghton are  designated as Class I directors,  and their terms of office expire
at the Annual Meeting. Messrs. Baroffio,  Sheffield and Stillwell are designated
as Class II directors, and their terms of office expire at the annual meeting of
stockholders  in 2002.  Messrs.  Jones and  Ramsey are  designated  as Class III
directors, and their terms of office expire in 2003.

        Executive officers serve at the discretion of the Board of Directors.

        Set forth below is biographical  information about each of the Company's
directors and executive officers named above.

        Scott D.  Sheffield.  Mr.  Sheffield,  a  distinguished  graduate of the
University of Texas with a Bachelor of Science degree in Petroleum  Engineering,
has been the  Chairman  of the  Board of  Directors  since  August  1999 and the
President and Chief  Executive  Officer of the Company since August 1997. He was
the  President  and a director of Parker & Parsley  Petroleum  Company since May
1990 and was the Chairman of the Board of Directors and Chief Executive  Officer
of Parker & Parsley since October 1990.  Mr.  Sheffield was the sole director of
Parker & Parsley from May 1990 until October 1990. Mr. Sheffield joined Parker &
Parsley  Development  Company ("PPDC"),  a predecessor of Parker & Parsley, as a
petroleum engineer in 1979. Mr. Sheffield served as Vice President - Engineering
of PPDC from September 1981 until April 1985, when he was elected  President and
a director.  In March 1989, Mr.  Sheffield was elected  Chairman of the Board of
Directors  and  Chief   Executive   Officer  of  PPDC.   Before  joining  PPDC's
predecessor,  Mr. Sheffield was employed as a production and reservoir  engineer
for Amoco Production Company.

        Timothy L. Dove. Mr. Dove was elected Executive Vice President and Chief
Financial Officer in February 2000. Prior to that, Mr. Dove held the position of
Executive  Vice  President - Business  Development  since August 1997.  Mr. Dove
joined Parker & Parsley in May 1994 as Vice  President -  International  and was
promoted to Senior Vice  President - Business  Development  in October  1996, in
which position he served until 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  in 1979 and  received  his  M.B.A.  in 1981 from the  University  of
Chicago.

        Dennis E. Fagerstone.  Mr. Fagerstone, a graduate of the Colorado School
of  Mines  with a B.S.  in  Petroleum  Engineering,  became  an  Executive  Vice
President of the Company in August 1997. Mr. Fagerstone served as Executive Vice
President and Chief Operating Officer of Mesa from March 1997 until August 1997.
Mr.  Fagerstone  served as Senior Vice President and Chief Operating  Officer of
Mesa from October 1996 to February  1997, as Vice  President -  Exploration  and
Production  of Mesa  from  May 1991 to  October  1996  and as Vice  President  -
Operations of Mesa from June 1988 until May 1991.

        Mark L. Withrow. Mr. Withrow, a graduate of Abilene Christian University
with a Bachelor of Science degree in Accounting and Texas Tech University with a
Juris Doctorate degree,  has been the Executive Vice President,  General Counsel
and Secretary of the Company  since August 1997.  He served as Vice  President -
General  Counsel of Parker & Parsley from February 1991 until January 1995,  and
served  as Senior  Vice  President,  General  Counsel  of Parker & Parsley  from
January 1995 until August 1997. He was Parker & Parsley's  Secretary from August
1992 until August 1997. Mr. Withrow joined PPDC in January 1991.  Before joining
PPDC,  Mr.  Withrow was the managing  partner of the law firm of Turpin,  Smith,
Dyer, Saxe & MacDonald, Midland, Texas.

        Danny Kellum.  Mr. Kellum, who received a  Bachelor of Science degree in
Petroleum  Engineering from Texas Tech University in 1979, was elected Executive
Vice  President - Domestic  Operations in May 2000.  From January 2000 until May
2000,  Mr. Kellum  served as Vice  President - Domestic  Operations.  Mr. Kellum
served as Vice  President - Permian  Division  from  August 1997 until  December
1999. From 1989 until 1994 he served as Spraberry  District  Manager and as Vice
President  of the  Spraberry  and Permian  Division  for Parker & Parsley  until
August of 1997. Mr. Kellum joined Parker & Parsley as an operations  engineer in
1981 after a brief career with Mobil Oil Corporation.

                                        6





        James R. Baroffio.   Dr.  Baroffio  received  a B.A. in  Geology  at the
College of Wooster,  Ohio,  an M.S. in Geology at Ohio State  University,  and a
Ph.D. in Geology at the  University of Illinois.  Before  becoming a director of
the Company in December 1997, Dr.  Baroffio  enjoyed a long career with Standard
Oil Company of  California,  the  predecessor  of Chevron  Corporation  where he
served as President,  Chevron  Research and Technology  Center from 1980 to 1985
and  eventually  retired as President of Chevron  Canada  Resources in 1994. Dr.
Baroffio was a member of the Board of Directors of the Rocky  Mountain Oil & Gas
Association,  and Chairman of the U.S. National Committee of the World Petroleum
Congress. His community leadership positions included membership on the Board of
Directors of Glenbow  Museum and the Nature  Conservancy  of Canada,  as well as
serving as President of the Alberta Nature Conservancy.

        R. Hartwell Gardner.  Mr.  Gardner  became a  director of the Company in
August  1997.  He served as a director of Parker & Parsley  from  November  1995
until August 1997. Mr. Gardner graduated from Colgate University with a Bachelor
of Arts degree in Economics and then earned an M.B.A.  from Harvard  University.
Until October 1, 1995,  Mr.  Gardner was the Treasurer of Mobil Oil  Corporation
and Mobil Corporation from 1974 and 1976, respectively.  Mr. Gardner is a member
of the  Financial  Executives  Institute  of  which he  served  as  Chairman  in
1986/1987  and is a Director  and  Chairman of the  Investment  Committee of Oil
Investment  Corporation  Ltd.  and Oil  Casualty  Investment  Corporation  Ltd.,
Pembroke, Bermuda.

        James L. Houghton.  Mr. Houghton is a Certified Public  Accountant and a
graduate of Kansas  University  with a Bachelor of Science degree in Accounting,
as well as a Bachelor of Laws degree.  Mr.  Houghton has served as a director of
the  Company  since  August  1997,  and as a director  of Parker & Parsley  from
October 1991 until August 1997. Until October 1, 1991, Mr. Houghton was the lead
oil and gas tax  specialist  for the  accounting  firm of Ernst &  Young,  was a
member of Ernst & Young's National Energy Group, and had served as its Southwest
Regional Director of Tax. Mr. Houghton is a member of the American  Institute of
Certified  Public  Accountants,  a member of the  Oklahoma  Society of Certified
Public  Accountants and a former  Chairman of its Federal and Oklahoma  Taxation
Committee, and past President of the Oklahoma Institute on Taxation. He has also
served as a Director for the Independent Petroleum Association of America and as
a member of its Tax Committee.

        Jerry P. Jones.  Mr. Jones earned a Bachelor of Science degree from West
Texas State College in 1953 and a Bachelor of Laws degree from the University of
Texas  School of Law in 1959.  Mr. Jones has served as a director of the Company
since  August  1997,  and as a director of Parker & Parsley  from May 1991 until
August 1997.  Mr. Jones was an attorney  with the law firm of Thompson & Knight,
L.L.P.,  Dallas,  Texas, since September 1959 and was a shareholder in that firm
until January 1998, when he retired and became of counsel to the firm. Mr. Jones
specialized in civil litigation, especially in the area of energy disputes.

        Charles E. Ramsey, Jr.  Mr. Ramsey is a  graduate of the Colorado School
of Mines with a  Petroleum  Engineering  degree and a  graduate  of the  Smaller
Company   Management   program  at  the  Harvard  Graduate  School  of  Business
Administration.  Mr. Ramsey has served as a director of the Company since August
1997.  Mr.  Ramsey  served as a director of Parker & Parsley  from  October 1991
until August 1997. Since October 1991, he has operated an independent management
and financial  consulting  firm. From June 1958 until June 1986, Mr. Ramsey held
various  engineering  and management  positions in the oil and gas industry and,
for six years before  October 1991, was a Senior Vice President in the Corporate
Finance  Department of Dean Witter  Reynolds Inc.  (Dallas,  Texas office).  His
industry experience  includes 12 years of senior management  experience with May
Petroleum  Inc. in the  positions  of  President,  Chief  Executive  Officer and
Executive Vice President.  Mr. Ramsey is also a former director of MBank Dallas,
the Dallas Petroleum Club and Lear Petroleum Corporation.

        Robert L. Stillwell.   Mr. Stillwell,  a graduate  of the  University of
Texas with a B.B.A.  and the  University of Texas School of Law with a J.D., has
served as a director of the Company  since August 1997.  He served as a director
of Mesa from  January  1992  until  August  1997,  as a member  of the  Advisory
Committee  of Mesa,  L.P.,  a  predecessor  of Mesa,  from  December  1985 until
December  1991,  and as a director of Mesa in its original  corporate  form from
1968 until January 1987.  Mr.  Stillwell is a partner in the law firm of Baker &
Botts, L.L.P., Houston, Texas.

                                        7





                      MEETINGS AND COMMITTEES OF DIRECTORS

        The Board of Directors of the Company held five meetings during 2000. No
director attended fewer than 75% of the total number of meetings of the Board of
Directors.  No director  attended fewer than 75% of the total number of meetings
of all committees of the Board of Directors on which that director served.

        The Board of Directors has two standing committees:  the Audit Committee
and  the  Compensation  Committee.  The  Board  of  Directors  does  not  have a
Nominating Committee.

        Information regarding the functions performed by the Audit Committee and
its  membership  is set forth in the  "Audit  Committee  Report"  and the "Audit
Committee  Charter"  included in this Proxy Statement.  The Audit Committee held
four meetings during 2000.

        The  Compensation   Committee  periodically  reviews  the  compensation,
employee  benefit  plans and fringe  benefits  paid to or provided for executive
officers of the  Company and  approves  the annual  salaries,  bonuses and stock
option  awards  of  the  Company's  executive  officers.   The  members  of  the
Compensation Committee are Messrs. Ramsey (Chairman),  Baroffio and Stillwell. A
subcommittee of Messrs.  Ramsey and Baroffio  administer the Long-Term Incentive
Plan.  The   Compensation   Committee  held  four  meetings   during  2000.  See
"Compensation Committee Report on Executive Compensation" included in this Proxy
Statement for additional information.

                             MANAGEMENT COMPENSATION

Compensation of Directors

        Each non-employee director receives an annual retainer fee of $50,000 if
the director serves on a committee and $40,000 if he does not. In addition, each
non-employee  director is reimbursed for travel  expenses to attend  meetings of
the Board of Directors or its committees  and an additional  $2,500 for services
as chairman of a committee.  No additional fees are paid for attendance at board
or  committee  meetings.  Executive  officers  of the  Company  do  not  receive
additional compensation for serving on the Board of Directors.

        Under the Company's Long-Term Incentive Plan (the "Plan"),  non-employee
directors  are  eligible to receive  awards in the form of  non-qualified  stock
options, stock appreciation rights,  restricted stock, or performance units. The
Company can use these awards instead of cash to pay its  non-employee  directors
all or part of their annual retainer fees. The Board of Directors determines the
form (or combination of forms) of consideration each year, based on the economic
and other  circumstances  at the time and based on its view of which awards will
best align the interests of the stockholders and the directors.

        For the year following the Company's 2000 annual stockholders'  meeting,
the Board of Directors  determined to use non-qualified stock options to pay all
of the  non-employee  directors'  annual fees.  The number of shares  subject to
stock options granted to each  non-employee  director was determined by dividing
the  director's  annual  retainer fee by the value of an option for one share on
May 17, 2000 (the last  closing  sale price  before the date of the award).  The
fair-market value of each option was calculated using the  Black-Scholes  method
based on assumptions provided by the Company's executive compensation consulting
firm.  These options vest 25% each quarter with the first vesting date on August
31, 2000.

        On May 18, 2000,  each  non-employee  director  received  the  following
awards of stock  options to  compensate  him for his annual  retainer  fee (each
stock  option  awarded  has an  exercise  price of  $13.50):  Messrs.  Baroffio,
Gardner,  Jones and Stillwell each received options for 7,912 shares and Messrs.
Houghton and Ramsey each received options for 8,307 shares.

        For the year following the Company's 2001 annual meeting,  Directors can
make an  irrevocable  election  to  receive  their  annual  fees  100% in  cash,
restricted  stock or stock options or they can split the fee equally between any
two of those three choices,  with such election to be exercised on or before May
17, 2001.

                                        8





Compensation of Executive Officers

        The  compensation  paid to the Company's  executive  officers  generally
consists of base salaries,  annual bonuses, awards under the Long-Term Incentive
Plan,  contributions to the Company's 401(k)  retirement plan, and miscellaneous
perquisites.  The following table  summarizes the total  compensation  for 2000,
1999 and 1998 awarded to, earned by or paid to the following persons:


                           SUMMARY COMPENSATION TABLE

                                                 Annual Compensation              Long-Term
                                      ----------------------------------------   Compensation
                                                                                    Awards
                                                                                 ------------
                                                                                    Shares
        Name and                                                Other Annual      Underlying     All Other
   Principal Position         Year   Salary (a)   Bonus (b)   Compensation (c)      Options    Compensation (d)
- ------------------------      ----   ----------   ---------   ----------------   ------------  -------------
                                                                                
Scott D. Sheffield (e)        2000    $638,000     $626,350       $ 18,051           120,000      $ 83,422
President and                 1999     480,000      270,000         14,427            90,000        69,378
Chief Executive Officer       1998     600,000      216,000         16,734            90,000       123,252


Dennis E. Fagerstone          2000    $290,000     $174,000       $  9,295            46,000      $ 46,558
Executive Vice President      1999     247,500       92,812          8,478            35,000        40,564
                              1998     275,000       92,812          8,076            35,000        37,757

Mark L. Withrow (e)           2000    $290,000     $174,000       $  5,577            46,000      $ 46,104
Executive Vice President      1999     225,000       84,376          4,327            35,000        38,855
and General Counsel           1998     250,000       84,376         60,882            35,000        61,178

Timothy L. Dove               2000    $290,000     $174,000       $  4,611            46,000      $ 45,546
Executive Vice President      1999     225,000      197,580          4,611            35,000        38,394
and Chief Financial Officer   1998     250,000       84,375          4,618            35,000        57,713

Danny L. Kellum (e)           2000    $240,000     $144,000       $  2,923            46,000      $ 43,157
Executive Vice President      1999     192,500       63,000         15,835            25,000        35,250
Domestic Operations           1998     180,000       63,000        218,314            20,000        48,326

(a)  Mr. Sheffield  voluntarily reduced his 1999 salary 20%, and the other named
     executive officers voluntarily reduced their salaries 10% during 1999.

(b)  Represents the amount awarded under the Company's  annual bonus program and
     forgiveness of a Company loan to Mr. Dove for $113,204 in 1999.

(c)  This column includes (i) relocation and housing cost of living  adjustments
     related to moving the corporate headquarters from Midland, Texas to Irving,
     Texas as follows: payment for 1999 - Mr. Kellum $12,539; payment for 1998 -
     Mr. Withrow $42,290 and Mr. Kellum $132,839; (ii) tax gross-up payments for
     relocation  and cost of living  adjustment:  payment for 1999 - Mr.  Kellum
     $471;  payment  for 1998 - Mr.  Withrow  $12,044  and Mr.  Kellum  $82,172.
     Amounts not shown represent miscellaneous perquisites.

(d)  For 2000 this column  includes (i)  contributions  to qualified  retirement
     plans  for  Messrs.  Sheffield,  Fagerstone,  Withrow,  Dove and  Kellum of
     $16,220,  $17,000,   $16,546,  $16,546,  and  $16,612  respectively;   (ii)
     contributions  to  the  Company's   non-qualified   deferred   compensation
     retirement plan for Messrs. Sheffield, Fagerstone, Withrow, Dove and Kellum
     of $65,027,  $29,558,  $29,558,  $29,000 and $24,000 respectively;  (iii) a
     $1,330 premium with respect to a term life insurance policy for the benefit
     of Mr. Sheffield;  and (iv) reimbursement for financial counseling services
     for Messrs. Sheffield and Kellum for $2,175 and $2,545 respectively.

(e)  See  "Management  Compensation  -  Compensation  of  Executive  Officers  -
     Employee   Investment   Partnerships"   for  information   about  Parker  &
     Parsley-sponsored   employee  investment   partnerships  in  which  Messrs.
     Sheffield, Withrow and Kellum invested their own funds.


        Long-Term   Incentive   Plan.   The  Plan   provides  for  employee  and
non-employee  director awards in the form of stock options,  stock  appreciation
rights, restricted stock, and performance units. The maximum number of shares of
common  stock  that may be  issued  under  the Plan is equal to 10% of the total
number of shares of common stock equivalents outstanding from time to time minus
the total number of shares of stock subject to outstanding awards on the date of
calculation  under any other  stock-based plan for employees or directors of the
Company  and its  subsidiaries.  The Plan had  3,766,520  shares  available  for
additional awards at December 31, 2000.

        No stock appreciation rights,  restricted stock or performance units are
outstanding under the Plan.

                                       9





        The  following  table sets forth  information  about stock option grants
made during 2000 to the named executive officers.


                        OPTION GRANTS IN LAST FISCAL YEAR

                                           Individual Grants
                          ----------------------------------------------------
                             Number of        % of Total
                             Securities     Options Granted    Exercise or
                             Underlying       to Employees      Base Price        Expiration     Grant Date
                          Options Granted   In Fiscal Year    Per Share (c)          Date        Value (d)
                          ---------------   ---------------   ----------------   -------------   ----------
                                                                                  
Mr. Sheffield..........     60,000 (a)           4.17%           $ 7.875         2/15/06-07-08   $ 238,200
                            60,000 (b)           4.17%            12.50          8/16/06-07-08     378,000
Mr. Fagerstone.........     23,000 (a)           1.6%              7.875         2/15/06-07-08      91,310
                            23,000 (b)           1.6%             12.50          8/16/06-07-08     144,900
Mr. Withrow............     23,000 (a)           1.6%              7.875         2/15/06-07-08      91,310
                            23,000 (b)           1.6%             12.50          8/16/06-07-08     144,900
Mr. Dove...............     23,000 (a)           1.6%              7.875         2/15/06-07-08      91,310
                            23,000 (b)           1.6%             12.50          8/16/06-07-08     144,900
Mr. Kellum.............     23,000 (a)           1.6%              7.875         2/15/06-07-08      91,300
                            23,000 (b)           1.6%             12.50          8/16/06-07-08     144,900

(a)  These  options  were  granted on  February  15,  2000,  vest at the rate of
     one-third each year, commencing on the first anniversary of the grant date,
     and have a term of five years from the date of  vesting.  The  Compensation
     Committee retains  discretion,  subject to plan limits, to modify the terms
     of the  options.  In the event of a change in  control  of the  Company  as
     defined in the Plan, the options will  immediately  become fully vested and
     exercisable in full.

(b)  These  options  were  granted  on  August  16,  2000,  vest at the  rate of
     one-third each year commencing on the first  anniversary of the grant date,
     and have a term of five years from the date of  vesting.  The  Compensation
     Committee retains  discretion,  subject to plan limits, to modify the terms
     of the  options.  In the event of a change in  control  of the  Company  as
     defined in the Plan, the options will  immediately  become fully vested and
     exercisable in full.

(c)  The  exercise  price per share is equal to the closing  price of the common
     stock on the New York Stock  Exchange  composite tape on the day before the
     date of grant.

(d)  The  estimated  grant  date  value of  shares in  footnotes  (a) and (b) is
     determined  using the  Black-Scholes  model.  The material  assumptions and
     adjustments incorporated in the Black-Scholes model in estimating the value
     of the options include the following:

           o     An  interest  rate of 5.72%  for  footnote  (a) and  5.71%  for
                 footnote  (b),  which  represents  the interest rate on a U. S.
                 Treasury  security  with a maturity date  corresponding  to the
                 expected option term.

           o    Volatility of 50% for footnote  (a) and (b) calculated using the
                lesser of (1) daily stock prices for the 120-day period prior to
                the grant date, or (2) 50%.

     No other adjustments were made to the model for non-transferability or risk
     of forfeiture. The ultimate values of the options will depend on the future
     market price of the common stock,  which cannot be forecast with reasonable
     accuracy.  The actual value, if any, an optionee will realize upon exercise
     of an option  will  depend on the excess of the market  value of the common
     stock over the exercise price on the date the option is exercised.


        The  following  table  sets  forth,  for each named  executive  officer,
information  concerning the exercise of stock options during 2000, and the value
of unexercised stock options as of December 31, 2000.


                 AGGREGATED OPTION EXERCISES IN LAST FISCAL YEAR
                        AND FISCAL YEAR END OPTION VALUES

                                                         Number of Securities          Value of Unexercised
                              Number of                 Underlying Unexercised             In-the-Money
                               Shares                 Options at Fiscal Year End    Options at Fiscal Year End
                             Acquired on     Value    --------------------------   ------------------------------
                              Exercise     Realized   Exercisable  Unexercisable   Exercisable  Unexercisable (a)
                             -----------   --------   -----------  -------------   -----------  -----------------
                                                                                  
Mr. Sheffield.............    15,000       $209,062     125,000       97,000        $194,531        $929,531
Mr. Fagerstone............     5,834         36,098     149,999       75,165         151,308         716,618
Mr. Withrow...............     5,000         70,937      91,835       75,165         162,880         716,618
Mr. Dove..................     5,834         49,224      99,001       75,165         151,309         716,618
Mr. Kellum................     3,334         27,297      51,667       65,999          98,544         620,946

(a)   Amounts  were calculated by multiplying the  number of unexercised options
      by  $19.6875,  which was  the  closing sale  price of the  common stock on
      December 29, 2000, and subtracting the aggregate exercise price.


                                       10





        Retirement   Plan.  The  Company   provides  a  non-qualified   deferred
compensation retirement plan for officers and key employees of the Company. Each
participant  is allowed to  contribute  up to 25% of base  salary.  The  Company
provides  a  matching  contribution  of 100% of the  participant's  contribution
limited  to the  first  10% of  the  officer's  base  salary  (or 8% of the  key
employee's base salary). The Company matching contribution vests immediately.

        Employee  Investment  Partnerships.  From 1987  through  1991,  Parker &
Parsley  formed  employee  partnership  programs  in  which  Messrs.  Sheffield,
Withrow, and Kellum participated.  In 1992 and 1993 Messrs.  Sheffield,  Withrow
and Kellum  participated in Direct Investment  Partnerships  formed to invest in
all wells  drilled by Parker & Parsley  during  those  years  (except in certain
circumstances  where its participation would impose additional costs to Parker &
Parsley).  As of December 31, 2000, the aggregate  contributions  that have been
made to the employee  partnerships  and the Direct  Investment  Partnerships  by
Messrs. Sheffield,  Withrow and Kellum and the aggregate distributions that have
been received by them from those  partnerships  were as follows:  Mr.  Sheffield
contributed  $734,955  and received  $1,287,280  ($141,550 of which was received
during 2000); Mr. Withrow contributed $142,625 and received $170,593 ($19,156 of
which was  received  during  2000);  and Mr.  Kellum  contributed  $141,709  and
received $193,339  ($20,563 of which was received during 2000).  During December
2000,  the  Company  acquired  13 of the  employee  partnerships  by merger with
Pioneer Natural Resources USA, Inc.  ("Pioneer USA"), a wholly-owned  subsidiary
of the Company.  Additionally,  during November 2000, the Company  exercised its
right  under the Direct  Investment  Partnership  agreements  to  purchase  each
partner's  interest in their  respective  Direct  Investment  Partnership.  More
information   about   these   transactions   can  be  found  below  in  "Certain
Relationships and Related Transactions."

        Severance Agreements.  The Company enters into severance agreements with
     its officers.  Salaries and bonuses are set by the  Compensation  Committee
independent  of these  agreements.  The  Compensation  Committee can increase or
reduce base salaries at its discretion.

        Either the Company or the officer may terminate the officer's employment
under the severance  agreement at any time.  The Company must pay the officer an
amount equal to one year's base salary if the officer's employment is terminated
because of death,  disability,  or normal  retirement.  The Company must pay the
officer an amount equal to one year's base salary and continue health  insurance
for the officer's  family for one year if the Company  terminates  the officer's
employment  without  cause  or if the  officer  terminates  employment  for good
reason,  which is when  reductions  in the  officer's  base annual salary exceed
specified limits or when the officer's  responsibilities have been significantly
reduced.  If within  one year  after a change in  control  of the  Company,  the
Company  terminates  the officer  without  cause,  or if the officer  terminates
employment for good reason,  the Company must pay the officer an amount equal to
2.99 times the sum of the  officer's  base salary plus target bonus for the year
and continue  health  insurance  for the  officer's  family for one year. If the
officer terminates employment with the Company without reason between six months
and one year after a change in  control,  or at any time within one year after a
change in control if the officer is required to move,  then the Company must pay
the  officer  one year's  base  salary and  continue  health  insurance  for the
officer's family for one year. Officers are also entitled to additional payments
for certain tax  liabilities  that may apply to severance  payments  following a
change in control.

        Indemnification Agreements. The Company has entered into indemnification
agreements  with  each  of its  directors  and  officers,  including  the  named
executive  officers.  Those  agreements  require  the Company to  indemnify  the
directors and officers to the fullest extent  permitted by the Delaware  General
Corporation  Law and to advance  expenses  in  connection  with  certain  claims
against  directors  and  officers.  The  Company  expects to enter into  similar
agreements  with persons  selected to be  directors  and officers in the future.
Each  indemnification  agreement also provides that, upon a potential  change in
control of the Company and if the  indemnified  director or officer so requests,
the Company will create a trust for the benefit of the  indemnified  director or
officer in an amount  sufficient to satisfy payment of all liabilities and suits
against which the Company has indemnified the director or officer.

           COMPENSATION COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION

        Mr. Robert L. Stillwell is a member of the Compensation Committee and is
a partner of Baker & Botts, L.L.P., which provided limited legal services to the
Company  during 2000. The dollar amount of fees that the Company paid to Baker &
Botts, L.L.P. during the most recent fiscal year of that law firm did not exceed
5% of  that  firm's  gross  revenues.  Mr.  Stillwell  does  not  serve  on  the
sub-committee  of the  Compensation  Committee  that  administers  the Company's
Long-Term Incentive Plan.

                                       11






             COMPENSATION COMMITTEE REPORT ON EXECUTIVE COMPENSATION

        The Compensation  Committee of the Board of Directors (the  "Committee")
submits the following report with respect to the executive  compensation program
of the Company.

Compensation Principles and Philosophy

        The  overriding  responsibility  of the  Committee  is to  maintain  the
Company's  executive  compensation  program so that it  attracts  and  retains a
capable and highly motivated senior  management team and aligns the compensation
of the  Company's  executives  with the  Company's  strategic  business  plan to
increase  stockholder  value.  During 2000, the Committee  retained an executive
compensation  consulting firm (Hewitt Associates) to assist and advise it in its
efforts to  establish  and  administer  fair and  competitive  compensation  and
incentive policies.  These policies emphasize variable  compensation,  structure
the annual bonus and long-term  incentive awards to be a significant  portion of
an  executive's  total  compensation  and result in total  compensation  that is
reflective  of Company  performance.  Stock  option  awards will  continue to be
emphasized as part of each executive's compensation package to align stockholder
and executive interests.  Other critical elements of the Company's  compensation
and incentive policies provide for:

        o     Base  salaries  at  median  levels  compared  to  industry  survey
              information and peer group proxy analysis.

        o     Annual  target  bonus levels at or slightly  above  median  levels
              compared  to  industry  survey  information  and peer group  proxy
              statement analysis.

        o     Long-term  incentive  award  levels that are above  median  levels
              compared  to  industry  survey  information  and peer group  proxy
              statement analysis.

        o     Significant stock ownership by the Directors and the CEO.

        To support the commitment to significant stock ownership,  the Company's
current stock ownership guidelines are as follows:

        o     Non-employee directors - stock value equal to at least three times
              each director's annual retainer fee

        o     Chairman of the Board and  Chief Executive Officer  -  stock value
              equal to at least five times base salary.

        In determining compliance with these guidelines, the Committee considers
its  expectations  of the long term value of the  Company's  stock,  the current
trading levels and stock-based compensation that the directors and CEO hold. Mr.
Sheffield and all Directors are in compliance with the ownership guidelines.

        The Omnibus Budget Reconciliation Act of 1993 placed restrictions on the
deductibility  of executive  compensation  paid by public  companies.  Under the
restrictions  that were  effective  in 1994,  the  Company is not able to deduct
compensation paid to any of the named executive officers in excess of $1,000,000
unless the compensation meets the definition of "performance based compensation"
in the  legislation.  Non-deductibility  could result in additional tax costs to
the Company.  While the Committee cannot assess with certainty how the Company's
compensation  program will  ultimately  be affected by this law,  the  Committee
generally tries to preserve the  deductibility of all executive  compensation if
it can do so without  interfering  with the  Company's  ability  to attract  and
retain capable and highly motivated senior management.

Elements of Compensation

        The elements of the compensation  program the Committee  administers for
executive  officers,  including  the Chief  Executive  Officer,  consist of base
salaries,  annual bonuses,  awards made under the Company's  Long-Term Incentive
Plan,  contributions to the Company's 401(k)  retirement plan,  contributions to
the  Company's   deferred   compensation   retirement  plan,  and  miscellaneous
perquisites.   Base  salaries,  annual  bonuses  and  long-term  incentives  are
discussed  separately  below;  however,  the  Committee  considers the aggregate
remuneration of executives when evaluating the executive compensation program.

                                       12





        Base Salaries. An executive's base salary is viewed as a fixed component
of total  compensation that should be competitive with companies of similar size
and business to the Company.  The  Committee  has targeted  base salaries at the
median level for  companies  of similar  size and  business to the Company.  The
Committee evaluates the base salaries of the Company's executive officers on the
basis of  competitive  base salary  survey data provided by its  consultant  and
consideration of each officer's duties and responsibilities. The Committee views
the named  executives below the CEO level as a team with diverse duties but with
similar  authority  and  responsibility.   Hewitt  Associates  historically  has
provided  base salary  survey data on the majority of the  Company's  peer group
companies,  a group of independent  exploration  and  production  companies with
similar asset, revenue and capital investment profiles as the Company. While the
peer group provided by Hewitt Associates includes some of the members of the Dow
Jones Oil- Secondary Index  reflected in the  performance  graph set forth below
under  "Company  Performance,"  it does not include all of the companies in that
peer group and includes  other  companies with which the Company  competes.  The
Committee  determines  the base salary for all named  executives,  including Mr.
Sheffield, using the same methodology.

        The 2000 base  salaries  for the named  executive  officers  as a group,
including  Mr.  Sheffield,  were  identified  by Hewitt  Associates  as being at
approximately  the 50th percentile  level. In establishing the base salaries for
the named executive officers effective January 1, 2001, the Committee elected to
not  commission  Hewitt to complete the salary survey but applied a conservative
percentage  increase of 3% to their 2000 base salary levels. One named executive
also received a promotional  base salary increase.  Mr.  Sheffield's base salary
was increased by 3% to $668,000,  which the Committee believes is at or slightly
below the 50th  percentile.  The  Committee  believes the other named  executive
officer's  base  salaries are close to the 50th  percentile.  The  Committee has
retained Hewitt Associates to survey the Company's peer group and report current
compensation  market  data so that  2002  salary  adjustments  will be  based on
surveyed market conditions.

        Annual Bonuses.  Each year the Committee  establishes a target bonus for
each executive  based on the target bonus median levels of executives in similar
positions at peer group companies.  To maintain  internal  equity,  the level of
responsibility, scope and complexity of the executive's position are considered.
The normal  range of awards for the annual  incentive  bonus plan is between 50%
and 150% of target.  The  Committee  believes  the target  bonus  levels for Mr.
Sheffield and the other named  executives  for 2000 are slightly  below the peer
group's median levels.  Hewitt  Associates will advise the Committee during 2001
of appropriate target bonus levels to achieve the Company's goal of establishing
target  bonus levels that are at or slightly  above the median of the  Company's
peer group.  In  awarding  2000  bonuses,  the Company  reviewed  the  following
criteria that are important to the success of the Company's business plan.

              o    Growth of Cash Flow per Share
              o    Operating Cost per BOE
              o    Debt/Book
              o    Reserve Replacement
              o    Growth of Net Value per Share
              o    Finding & Development Cost per BOE
              o    Production Growth
              o    Debt/BOE

        In determining the named executive  officers'  annual bonus awards,  the
Committee also evaluated the Company's stock performance in relation to its peer
group. The Committee did not employ a formula, specific targets or predetermined
weighting  of the above  financial  or  operational  performance  criteria.  The
Committee  also evaluates  Company  performance in light of oil and gas industry
fundamentals and assesses how effectively management adapts to changing industry
conditions  and  opportunities  during  the year.  The  Committee  observes  and
evaluates the individual  performance of executive officers through the year and
discusses the performance of these key executives with Mr. Sheffield.

        For 2000,  the  Committee  awarded  Mr.  Sheffield  and the other  named
executives  cash  bonuses  above  the  target  bonus  levels.  Specific  Company
performance which resulted in bonus payouts above target for 2000 included:

              o     Stock price increase of 120%
              o     Base operating costs of $2.72 per BOE
              o     Finding costs of $4.66 per BOE
              o     Reserve replacement of 167%

                                       13





              o     Return on equity 18.1%
              o     General & administrative cost of $.76 per BOE
              o     Debt reduction of $167,000,000

        Long-term  Incentives.  A  significant  portion  of the named  executive
officers' total compensation is comprised of long-term  incentive awards,  which
are intended to align executive  management's  interests in long-term growth and
success more  closely with the  interests  of the  Company's  stockholders.  The
Committee has  determined  that annual stock option awards should be the primary
method to award  long-term  incentives.  To provide an averaging  effect for the
stock option exercise prices, the Committee has elected to make semiannual stock
option awards of approximately 50% of annual grant levels.

        The number of options granted to Mr. Sheffield in 2000 was determined by
a comparison  of option  grants made to the CEO's of peer group  companies.  The
other named  executive  officers were  reviewed as a team.  The level of options
awarded to each named  executive was  determined by comparing  awards granted to
peer company executives  holding similar  positions,  and their individual award
levels were averaged to determine the actual  grants.  The award levels were not
influenced by the stock holdings of the executives. The Company has historically
held to the philosophy of awarding  long-term  incentives  that are above market
averages.  For 2000,  Mr.  Sheffield  was awarded  120,000  stock  options.  The
Committee  believes this award level placed Mr. Sheffield at  approximately  the
50th  percentile for long- term incentive  awards for chief  executive  officers
among the survey group.

        In December 1998, the Company  received  information  that an investment
fund  group had  acquired  beneficial  ownership  of more than 20% of the common
stock.  Pursuant to the provisions of the Plan, if a third party acquires 20% or
more of the common stock, certain change in control provisions are triggered. In
December  1998, the Committee  determined  that a change in control had occurred
under the provisions of the Plan,  effective  September 30, 1998.  Consequently,
all stock option  awards  granted  under the Plan from  inception in August 1997
through  September 30, 1998, were  immediately  vested,  and the restrictions on
restricted stock awards were removed.  The Plan has been amended to increase the
third party ownership to 40% to trigger the change in control provisions.

        In summary,  the Company  believes a  significant  portion of  executive
compensation  should be variable and  performance-based  so that an  executive's
total  compensation is linked to the performance of the individual,  the Company
and its stock  price.  The  majority  of the  named  executive  officers'  total
compensation  is  variable,  at-risk  compensation.  This  structure  allows the
Company to  administer  overall  compensation  that rises or falls  based on the
Company's performance and to maintain a balance between the Company's short-term
and long-term objectives.

Compensation Committee of
the Board of Directors

Charles E. Ramsey, Jr., Chairman
James R. Baroffio
Robert L. Stillwell


                             AUDIT COMMITTEE REPORT

        The Audit Committee's purpose is to assist the Board of Directors in its
oversight of the Company's internal controls, financial statements and the audit
process. The Board of Directors,  in its business judgment,  has determined that
all members of the  committee  are  independent  as  required  under the listing
standards of the New York Stock Exchange.  The committee  operates pursuant to a
charter  adopted by the Board of  Directors.  A copy of the  current  charter is
attached to this Proxy Statement as Annex A.

        Management  is  responsible  for  the   preparation,   presentation  and
integrity  of the  Company's  financial  statements,  accounting  and  financial
reporting  principles,  and internal controls and procedures  designed to assure
compliance with accounting  standards and applicable laws and  regulations.  The
independent  auditors,  Ernst & Young LLP, are  responsible  for  performing  an
independent  audit of the consolidated  financial  statements in accordance with
generally accepted auditing standards.


                                       14





        In performing its oversight role, the Audit Committee has considered and
discussed the audited  financial  statements with management and the independent
auditors.  The committee has also  discussed with the  independent  auditors the
matters  required to be discussed by  Statement  on Auditing  Standards  No. 61,
Communication  with Audit Committees,  as currently in effect. The committee has
received the written  disclosures and the letter from the  independent  auditors
required  by  Independence   Standards   Board  Standard  No.  1,   Independence
Discussions  with Audit  Committees,  as currently in effect.  The committee has
also  considered  whether the  performance  of other  non-audit  services by the
independent  auditors is compatible with maintaining the auditor's  independence
and has discussed with the auditors the auditors' independence.

        Based on the reports  and  discussions  described  in this  Report,  and
subject to the  limitations on the roles and  responsibilities  of the committee
referred to below and in the charter,  the Audit  Committee  recommended  to the
Board of  Directors  that the audited  financial  statements  be included in the
Annual  Report on Form 10-K for the fiscal year ended  December  31,  2000,  for
filing with the Securities and Exchange Commission.  The committee and the board
have also recommended the selection of the Company's independent auditors.

        The members of the Audit Committee are not professionally engaged in the
practice  of  auditing  or  accounting  for the  Company  and are not experts in
auditor   independence   standards.   Members  of  the  committee  rely  without
independent  verification  on  the  information  provided  to  them  and  on the
representations  made by management and the independent  auditors.  Accordingly,
the  Audit  Committee's  oversight  does not  provide  an  independent  basis to
determine that  management has maintained  appropriate  accounting and financial
reporting principles or appropriate internal controls and procedures designed to
assure compliance with accounting standards and applicable laws and regulations.
Furthermore,  the Audit Committee's  considerations and discussions  referred to
above do not assure that the audit of the  Company's  financial  statements  has
been carried out in accordance with generally accepted auditing standards,  that
the financial  statements are presented in accordance  with  generally  accepted
accounting principles, or that Ernst & Young LLP is in fact independent.

Audit Committee of the Board of Directors
James L. Houghton, Chairman
R. Hartwell Gardner
Jerry P. Jones

                                       15





                               COMPANY PERFORMANCE

        The following  graph and chart compare the  Company's  cumulative  total
stockholder  return on common stock during the period from  December 31, 1995 to
December 31, 2000,  with  cumulative  total  stockholder  return during the same
period for the DJ  Oil-Secondary  Group and the Standard and Poor's 500 Index as
prescribed by SEC rules. The Company's  cumulative total stockholder  return for
the period from  December  31, 1995 to  December  31, 2000  consists of Parker &
Parsley's  operating results prior to August 8, 1997 and the Company's operating
results  beginning  August 8,  1997.  The graph and  chart  show the  value,  at
December  31 in each of 1996,  1997,  1998,  1999 and 2000 of $100  invested  at
December 31, 1995, and assume the reinvestment of all dividends.


                COMPARISON OF FIVE YEAR CUMULATIVE TOTAL RETURN *
    AMONG PIONEER NATURAL RESOURCES COMPANY, THE STANDARD & POOR'S 500 INDEX
                     AND THE DOW JONES OIL - SECONDARY INDEX

                                            Pioneer
                                            Natural      Dow Jones     Standard
                      Measurement          Resources        Oil        & Poor's
                 (Fiscal Year Covered)      Company      Secondary        500
                 ---------------------     ---------     ---------     --------

                                                                 
1995                                          100           100           100
1996                                          168           127           123
1997                                          133           126           164
1998                                           40            87           211
1999                                           41           100           255
2000                                           91           160           232

*    Assumes  $100  invested on December  31, 1995 in stock or index.  Including
     reinvestment of dividends. Fiscal year ending December 31.




                                         1995   1996   1997   1998   1999   2000
                                         ----   ----   ----   ----   ----   ----

                                                            
     Pioneer Natural Resources Company    100    168    133     40     41     91
     Standard & Poor's 500                100    123    164    211    255    232
     Dow Jones Oil - Secondary            100    127    126     87    100    160



                                       16





         SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

        The  following  table  sets  forth  certain  information  regarding  the
beneficial  ownership of common  stock as of March 28, 2001,  by (a) each person
who is known by the Company to own beneficially  more than 5% of the outstanding
shares of common  stock,  (b) each  director  and  nominee  for  director of the
Company,  (c) each executive  officer of the Company,  and (d) all directors and
executive officers as a group.


                                                     Number of      Percentage
       Name of Person or Identity of Group             Shares      Of Class (1)
       -----------------------------------           ----------    ------------

                                                                
Southeastern Asset Management, Inc. (2)..........    26,212,032       26.7%

Longleaf Partners Fund
O. Mason Hawkins
6410 Poplar Avenue, Suite 900
Memphis, Tennessee  38119

Richard E. Rainwater (3) (4)
777 Main Street, Suite 2700
Fort Worth, Texas  76102.........................     5,769,985        5.9%

Scott D. Sheffield (4), (5)......................       316,437         *

Timothy L. Dove (4), (6).........................       209,461         *

Dennis E. Fagerstone (4).........................       256,071         *

Danny L. Kellum (4), (7).........................       130,202         *

Mark L. Withrow (4), (8).........................       228,643         *

James R. Baroffio (4)............................        58,849         *

R. Hartwell Gardner (4)..........................        60,585         *

James L. Houghton (4), (9).......................        61,361         *

Jerry P. Jones (4)...............................        56,648         *

Charles E. Ramsey, Jr. (4).......................        56,000         *

Robert L. Stillwell (4), (10)....................        58,245         *

All directors and executive officers as a
  group (11 persons) (11)........................     1,492,502        1.5%

* Does not exceed 1%.

(1)  Based on  98,239,681  shares  of  common  stock  consisting  of  96,299,025
     outstanding shares of common stock and 1,940,656  outstanding  exchangeable
     shares that are exchangeable for the same number of shares of common stock.

(2)  The Schedule 13G/A filed with the SEC on February 9, 2001, which is a joint
     statement on Schedule 13G/A filed by Southeastern  Asset  Management,  Inc.
     ("Southeastern"),  Longleaf Partners Fund ("Longleaf") and O. Mason Hawkins
     ("Hawkins"),  states that the statement is being filed by Southeastern as a
     registered  investment  adviser,  and that all of the securities covered by
     the  statement  are owned  legally by  Southeastern's  investment  advisory
     clients and none are owned  directly or  indirectly  by  Southeastern.  The
     Schedule  13G/A  further  states that the  statement is also being filed by
     Hawkins, Chairman of the Board and C.E.O. of Southeastern,  in the event he
     could be deemed to be a  controlling  person of that firm as the  result of
     his official  positions  with or ownership  of its voting  securities.  The
     existence  of such control is  expressly  disclaimed.  Hawkins does not own
     directly or indirectly any securities covered by the Schedule 13G/A for his
     own account.


                                       17





(3)  Includes 109,324  shares owned  directly by Rainwater,  Inc.,  of which Mr.
     Rainwater  is the  sole  shareholder,  and  300,852  shares  (of  which Mr.
     Rainwater disclaims beneficial ownership) owned by Mr. Rainwater's spouse.

(4)  Includes the  following number of shares subject to stock options that were
     exercisable at or  within 60 days  after  March 28,  2001:  Mr.  Rainwater,
     18,147; Mr. Sheffield, 142,500; Mr. Dove, 178,166; Mr. Fagerstone, 225,164;
     Mr.  Kellum,  117,666;  Mr. Withrow,  167,000;  Mr.  Baroffio,  48,096; Mr.
     Gardner,  48,096; Mr.  Houghton,  49,000; Mr.  Jones,  41,096; Mr.  Ramsey,
     49,000; and Mr. Stillwell, 48,096.

(5)  Includes  100 shares held by a minor child of Mr.  Sheffield,  5,000 shares
     held in Mr.  Sheffield's  investment  retirement  account and 10,895 shares
     held in Mr. Sheffield's 401(k) account.

(6)  Includes 370 shares held in Mr. Dove's 401(k) account.

(7)  Includes 516 shares held in Mr. Kellum's 401(k) account.

(8)  Includes 17,266 shares held in Mr. Withrow's 401(k) account.

(9)  Includes  10,361  shares  held by two  trusts  of which Mr.  Houghton  is a
     trustee and over which shares he has sole voting and  investment  power and
     2,000 shares held in Mr. Houghton's investment retirement account.

(10) Includes 758 shares held by Mr. Stillwell's wife.

(11)  Includes  1,113,880  shares of common stock  subject to stock options that
were exercisable at or within 60 days after March 28, 2001.


             SECTION 16(a) BENEFICIAL OWNERSHIP REPORTING COMPLIANCE

        The executive officers and directors of the Company are required to file
reports  with the  SEC,  and with the  various  Canadian  provincial  securities
commissions  (the "Canadian  Commissions"),  disclosing the amount and nature of
their  beneficial  ownership  in  common  stock,  as  well  as  changes  in that
ownership.  Pursuant to applicable Canadian policies, the executive officers and
directors  of the Company are  exempted  from filing  reports  with the Canadian
Commissions,  provided  that they timely  file all reports  required to be filed
with the SEC.

        Based solely on its review of reports and written  representations  that
the Company has received,  the Company  believes that all required  reports were
filed on time for 2000.

                 CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

        The  Company,  through its  wholly-owned  subsidiaries,  has in the past
sponsored certain affiliated  partnerships,  including 44 drilling partnerships,
three public income partnerships and 13 affiliate employee partnerships,  all of
which were formed  primarily for the purpose of drilling and completing wells or
acquiring producing  properties.  In 1992, the Company  discontinued  sponsoring
public  and  private  oil  and gas  development  drilling  partnerships,  income
partnerships and affiliated employee partnerships.

        In December 2000,  the Company  received the approval of the partners of
13 employee  partnerships to merge with Pioneer USA for a purchase price of $2.0
million.  Of the total  purchase  price,  $317,055  was paid to current  Company
employees,  of which  amount  $138,899,  $22,886  and  $48,972  were paid to Mr.
Sheffield, Mr. Withrow and Mr. Kellum, respectively.  Additionally,  during 2000
the  Company  purchased  all of the  direct  oil and gas  interests  held by Mr.
Sheffield for $195,133.

        During  each of  1994,  1993  and  1992,  the  Company  formed  a Direct
Investment  Partnership for the purpose of permitting  selected key employees to
invest directly,  on an unpromoted basis, in wells that the Company drilled. The
partners in the Direct  Investment  Partnerships  formed in 1994,  1993 and 1992
paid and received approximately .337%, 1.5375% and 1.865%, respectively,  of the
costs and revenues  attributable to the Company's interest in the wells in which
each such Direct Investment Partnership  participates.  The Company discontinued
the formation of Direct Investment Partnerships in 1995.

        In  November  2000,  the  Company  exercised  its right under the Direct
Investment  Partnership  agreements to purchase each partner's interest in their
respective  Direct  Investment  Partnership.  The Company  paid $4.3  million to
complete the  purchases.  Current  employees of the Company were partners in the
Direct  Investment  Partnerships and received  $886,512 of the proceeds from the
purchases,  of which  amount  $416,364,  $117,578  and $77,204  were paid to Mr.
Sheffield, Mr. Withrow and Mr. Kellum, respectively.


                                       18





        The Company,  through a wholly-owned  subsidiary,  serves as operator of
properties  in  which  it and its  affiliated  partnerships  have  an  interest.
Accordingly,  the  Company  receives  producing  well  overhead,  drilling  well
overhead  and  other  fees  related  to the  operation  of the  properties.  The
affiliated  partnerships also reimburse the Company for their allocated share of
general and administrative charges.

        On June 29,  1999,  the  Company  completed  the sale of certain  United
States oil and gas producing  properties,  gas plants and other assets primarily
located in the Gulf Coast, Mid Continent and Permian Basin to Prize Energy Corp.
("Prize"). The sale of these assets was initiated through an auction process.

        The Board of Directors of Prize includes Mr. Philip P. Smith,  its Chief
     Executive Officer, Mr. Kenneth A. Hersh, and Mr. Lon C. Kile, its President
and Chief Operating Officer. Mr. Hersh, through his association with Natural Gas
Partners V, L.P., owned or controlled  approximately 88% of Prize. Messrs. Smith
and Kile owned or controlled  approximately 10.5% and .5% of Prize respectively.
Because Mr.  Smith and Mr.  Hersh were  members of the Board of Directors of the
Company and Mr. Kile was an Executive  Vice  President  of the Company  prior to
initiating the auction process, supervision of the sale process was placed under
the direction of a special independent committee (comprised of outside directors
unrelated  to  Prize)  of the  Company's  Board of  Directors.  The  independent
committee  reviewed and considered  all offers  presented to the Company for the
purchase of the assets  acquired by Prize.  The Prize offer was  approved by the
special  independent  committee  as being the best  offer  presented.  Following
approval of the Prize offer by the special independent committee, Messrs. Smith,
Hersh and Kile resigned their positions with the Company.

        In accordance  with the terms of the Prize purchase and sale  agreement,
the Company  received net sales proceeds of $245.0 million,  comprised of $215.0
million of cash and 2,307.693 shares of six percent convertible  preferred stock
("Prize  Preferred")  having a  liquidation  preference  and fair value of $30.0
million.  Prior to February 9, 2000, Prize was a closely held, non-public entity
and the fair market value of the Prize  Preferred was not readily  determinable.
On  February  9,  2000,  the common  stock of Prize  ("Prize  Common")  began to
publicly trade on the American Stock Exchange. At that time, the Company's Prize
Preferred was exchanged  for 3,984,197  shares of Prize Series A 6%  Convertible
Preferred Stock ("Prize Senior A Preferred"). On March 31, 2000, the Company and
Prize converted the Company's 3,984,197 shares of Prize A Preferred to 3,984,197
shares of Prize  Common,  received  cash in lieu of 33,964  shares of  preferred
in-kind  dividends and the Company sold to Prize  1,346,482  shares of the Prize
Common for a combined cash total of $18.6 million. During 2000, the Company sold
an  additional  2,024,500  shares of Prize  Common in the open  market for $41.1
million. The Company recognized aggregate net gains from the dispositions of the
Prize  Common  of  $34.3  million  during  2000.  The fair  market  value of the
Company's remaining  investment in 613,215 shares of Prize Common as of December
31, 2000 was $12.7 million.

                              STOCKHOLDER PROPOSALS

        Any  stockholder  of the Company  who  desires to submit a proposal  for
action at the Company's  annual meeting of  stockholders  for 2002 and wishes to
have such proposal (a "Rule 14a-8  Proposal")  included in the  Company's  proxy
materials,  must submit the Rule 14a-8  Proposal to the Company at its principal
executive  offices no later than December 7, 2001,  unless the Company  notifies
the  stockholders  otherwise.  Only those Rule 14a-8  Proposals  that are timely
received by the Company and proper for stockholder action (and otherwise proper)
will be included in the Company's proxy materials.

        Any  stockholder  of the Company  who  desires to submit a proposal  for
action at the annual meeting of  stockholders in 2002, but does not wish to have
such proposal (a "Non-Rule  14a-8  Proposal")  included in the  Company's  proxy
materials,  must  submit  such  Non-Rule  14a-8  Proposal  to the Company at its
principal  executive offices no later than February 20, 2002, unless the Company
notifies  the  stockholders  otherwise.  If a  Non-Rule  14a-8  Proposal  is not
received by the Company on or before February 20, 2002, then the Company intends
to exercise its  discretionary  voting  authority  with respect to such Non-Rule
14a-8 Proposal.  "Discretionary voting authority" is the ability to vote proxies
that  stockholders  have  executed and  returned to the Company,  on matters not
specifically   reflected  in  the  Company's  proxy  materials,   and  on  which
stockholders have not had an opportunity to vote by proxy.

        Stockholders  desiring  to  propose  action  at the  annual  meeting  of
stockholders  must also comply with  Article  Ninth of the Amended and  Restated
Certificate of Incorporation of the Company.  Under Article Ninth, a stockholder
must submit to the Company,  no later than 60 days before the annual  meeting or
ten days after the first public notice

                                       19





of the annual  meeting is sent to  stockholders,  a written notice setting forth
(i) the nature of the proposal with particularity, including the written text of
the  proposal,   (ii)  the  stockholder's   name,  address  and  other  personal
information,  together  with the  number of shares of each  class and  series of
stock held by the  stockholder,  (iii) any  interest of the  stockholder  in the
proposed  business,  (iv) the name of any  persons  nominated  to be  elected or
reelected  as a director by the  stockholder,  and (v) with respect to each such
nominee, the nominee's name, address and other personal information,  the number
of share of each class and series of stock of the Company held by such  nominee,
all  information  required to be  disclosed  pursuant to  Regulation  14A of the
Securities  and Exchange Act of 1934,  and a notarized  letter  containing  such
nominee's acceptance of the nomination, stating his or her intention to serve as
director  if  elected,  and  consenting  to be named as a  nominee  in any proxy
statement relating to such election.  The person presiding at the annual meeting
will determine  whether business is properly brought before the meeting and will
not permit the  consideration  of any business not properly  brought  before the
meeting.

        Written  requests for inclusion of any  stockholder  proposal  should be
addressed  to Corporate  Secretary,  Pioneer  Natural  Resources  Company,  1400
Williams Square West, 5205 North O'Connor  Boulevard,  Irving,  Texas 75039. The
Company  suggests  that any such  proposal  be sent by  certified  mail,  return
receipt requested.

        The  Board  of  Directors  will  consider  any  nominee  recommended  by
stockholders  for election at the annual meeting of  stockholders  to be held in
2002 if that  nomination  is  submitted  in writing,  not later than January 11,
2002, to Corporate Secretary,  Pioneer Natural Resources Company,  1400 Williams
Square West, 5205 North O'Connor Boulevard, Irving, Texas 75039. Each submission
must  include a statement  of the  qualifications  of the  nominee,  a notarized
consent  signed by the nominee  evidencing a willingness to serve as a director,
if elected,  and a commitment by the nominee to meet  personally with members of
the Board of Directors.

                             SOLICITATION OF PROXIES

        Solicitation  of  Proxies  may be  made  by  mail,  personal  interview,
telephone  or  telegraph by  officers,  directors  and regular  employees of the
Company.  The Company may also request banking  institutions,  brokerage  firms,
custodians,  nominees and  fiduciaries to forward  solicitation  material to the
beneficial  owners of the common  stock that those  companies or persons hold of
record, and the Company will reimburse the forwarding expenses. In addition, the
Company has retained D.F. King & Co., Inc. to assist in  solicitation  for a fee
estimated not to exceed $7,500. The Company will bear all costs of solicitation.

                                STOCKHOLDER LIST

        In accordance  with the Delaware  General  Corporation  Law, the Company
will  maintain  at its  corporate  offices  in  Irving,  Texas,  a  list  of the
stockholders  entitled to vote at the Annual  Meeting.  The list will be open to
the examination of any stockholder,  for purposes germane to the Annual Meeting,
during ordinary business hours for 10 days before the Annual Meeting.

                                  ANNUAL REPORT

        The Company's  Annual Report to  Stockholders  for the fiscal year ended
December 31, 2000, is being mailed to stockholders  concurrently with this Proxy
Statement and does not form part of the proxy solicitation material.

        A copy of the  Company's  Annual  Report on Form 10-K for the year ended
December  31,  2000,  as filed  with the  SEC,  will be sent to any  stockholder
without charge upon written  request  addressed to Investor  Relations,  Pioneer
Natural  Resources  Company,  1400  Williams  Square West,  5205 North  O'Connor
Boulevard,  Irving,  Texas  75039,  or oral  request to  telephone  number (972)
969-3583. The Annual Report on Form 10-K is also available at the SEC's web site
in its EDGAR database (www.sec.gov).

        Only a  single  copy of this  Proxy  Statement  is  being  delivered  to
multiple  stockholders  sharing a common  address  unless the  Company  receives
contrary  instructions from stockholders sharing a common address.  Upon written
or oral request to the Company's Investor Relations department at the address or
telephone  number provided above,  the Company will deliver  promptly a separate
copy of the Proxy  Statement  to a  stockholder  at a shared  address to which a
single copy of this Proxy Statement was delivered. By written or oral request to
the same address,  (i) a stockholder  may direct a  notification  to the Company
that the stockholder wishes to receive a separate annual report or proxy

                                       20





statement in the future,  or (ii)  stockholders who share an address and who are
receiving  delivery of multiple copies of the Company's  annual reports or proxy
statements  can request  delivery of only a single  copy of these  documents  to
their shared address.

                                 INTERNET VOTING

        For  shares of stock  that are  registered  in your  name,  you have the
opportunity  to vote  through  the  Internet  using a  program  provided  by the
Company's  transfer  agent,  Continental  Stock Transfer & Trust Company.  Votes
submitted  electronically  through  the  Internet  under  this  program  must be
received by 5:00 p.m., New York time, on Wednesday,  May 16, 2001. The giving of
such a proxy will not affect  your right to vote in person  should you decide to
attend the Annual  Meeting.  The  Company has been  advised by counsel  that the
Internet voting procedures that have been made available through Continental are
consistent with the requirements of applicable law.

        To vote through the Internet, please access Continental Stock Transfer &
Trust Company at www.continentalstock.com.  Select "ContinentaLink Proxy Voting"
on the screen.  At the next screen,  you will need to enter the Company  Number,
Proxy  Number and Account  Number that are  printed on your  personalized  proxy
card.

        The Internet voting procedures are designed to authenticate  stockholder
identities,  to allow  stockholders  to give their voting  instructions,  and to
confirm  that   stockholders'   instructions   have  been   recorded   properly.
Stockholders  voting through the Internet  should  remember that the stockholder
must bear costs  associated with electronic  access,  such as usage charges from
Internet access providers and telephone companies.

                                     ******

        IT IS IMPORTANT  THAT PROXIES BE RETURNED  PROMPTLY.  WHETHER OR NOT YOU
EXPECT TO ATTEND THE MEETING IN PERSON,  YOU ARE URGED TO  COMPLETE,  SIGN,  AND
RETURN THE PROXY IN THE  ENCLOSED  POSTAGE-PAID,  ADDRESSED  ENVELOPE OR TO VOTE
THROUGH THE INTERNET.

                                             By Order of the Board of Directors



                                             Mark L. Withrow
                                             Secretary

Irving, Texas
April 9, 2001

                                       21





                                     Annex A

                             Audit Committee Charter



                                       22





                        PIONEER NATURAL RESOURCES COMPANY

                    AUDIT COMMITTEE OF THE BOARD OF DIRECTORS

                                     CHARTER


I       PURPOSE

        The primary  function of the Audit  Committee  is to assist the Board of
Directors  in  fulfilling  its  oversight  responsibilities  by  reviewing:  the
financial  reports and other financial  information the Company  provides to any
governmental  body or the public;  the  Company's  systems of internal  controls
regarding finance,  accounting,  legal compliance and ethics that management and
the Board have established; and the Company's auditing, accounting and financial
reporting  processes  generally.   Consistent  with  this  function,  the  Audit
Committee  should  encourage  continuous   improvement  of,  and  should  foster
adherence to, the Company's  policies,  procedures  and practices at all levels.
The Audit Committee's primary duties and responsibilities are to:

        o     Serve  as an  independent  and  objective  party  to  oversee  the
              Company's financial reporting process and internal control system.

        o     Review and appraise the  independence  of the  Company's  external
              auditors and ensure  receipt from them of the written  disclosures
              and letter required by Independence Standard Board Standard No. 1.

        o     Select,  review and  appraise the audit  efforts of the  Company's
              independent   accountants   and   internal   auditing   department
              (reference to internal  auditors or the internal audit  department
              in this Charter shall include both internal  audit  activities and
              functions  conducted  by  employees  of the  Company or by outside
              auditors  appointed for such  purposes);  and, where  appropriate,
              replace the independent accountants or internal audit department.

        o     Provide  an open  avenue of  communication  among the  independent
              accountants,   financial  and  senior  management,   the  internal
              auditing  department,  and the Board,  always emphasizing that the
              independent  accountants  are ultimately  accountable to the Audit
              Committee and the Board.

        The Audit  Committee will primarily  fulfill these  responsibilities  by
carrying out the activities enumerated in Section IV of this Charter.

II      COMPOSITION

        The Audit Committee shall be comprised of three or more directors as the
Board determines,  each of whom shall be independent directors and free from any
relationship  that,  in the  opinion  of the  Board,  would  interfere  with the
exercise of his or her  independent  judgment as a member of the Committee.  All
members of the Audit Committee shall also meet the  independence  and experience
requirements of the New York Stock Exchange.  All members of the Committee shall
have a working familiarity with basic finance and accounting  practices,  and at
least one member of the Committee  shall have  accounting  or related  financial
management expertise.

        The members of the Committee shall be elected by the Board at the annual
organizational  meeting  of the  Board  and shall  serve  until the next  annual
meeting  of the Board,  or until  their  successors  shall be duly  elected  and
qualified.  Unless the Board designates a Chair of the Committee, the members of
the  Committee  may  designate  a Chair by majority  vote of the full  Committee
membership.

III     MEETINGS

        The  Committee  shall  meet  at  least  four  times  annually,  or  more
frequently  as  circumstances  warrant.  As  part  of  its  job to  foster  open
communication,  the Committee should meet at least annually with management, the
director of the internal auditing department, and the independent accountants in
separate executive sessions to discuss any matters that the Committee or each of
these groups believe should be discussed privately. In addition, the Committee

                                       23





or at  least  its  Chair  should  meet  with  the  independent  accountants  and
management  quarterly to review the Company's  financials  consistent  with IV.4
below.

IV      RESPONSIBILITIES AND DUTIES

        To fulfill its responsibilities and duties the Audit Committee shall:

Review
- ------
1.      Review and  (if appropriate)  update this  Charter periodically,  but at
        least annually, as circumstances warrant.

2.      Review the Company's  quarterly  and annual  financial  statements  with
        financial management and the independent accountants prior to its filing
        or prior to the release of earnings, including any certification report,
        opinion, or review rendered by the independent accountants. The Chair of
        the Committee  may  represent the entire  Committee for purposes of this
        review.

3.      Review  the  regular  internal  reports to  management  prepared  by the
        internal auditing department and management's response.

4.      Management,  with the concurrence of the Audit Committee, shall appoint,
        terminate or replace a director of internal  audit or, at the discretion
        of the Board,  select and contract with outside  auditors to perform the
        function of an internal audit department. The director of internal audit
        or any  outside  auditors  serving as  internal  auditors  shall  report
        directly to the Audit  Committee,  and the Audit  Committee shall direct
        the  scope of their  duties  and  activities  in  accordance  with  this
        Charter.

5.      Discuss  with the  independent  accountants the  matters  required to be
        discussed  by  Statement on  Auditing  Standards  No. 61 relating to the
        conduct of the audit.

Independent Accountants
- -----------------------
6.      Recommend  to the Board the  selection of the  independent  accountants,
        considering  independence  and  effectiveness,  and approve the fees and
        other  compensation  to be paid to the  independent  accountants.  On an
        annual  basis,   the  Committee  should  review  and  discuss  with  the
        accountants all significant  relationships the accountants have with the
        Company  to  evaluate   the  effect  of  those   relationships   on  the
        accountants' independence.

7.      Review the  performance of the  independent  accountants and approve any
        proposed  discharge of the  independent  accountants when  circumstances
        warrant.

8.      Periodically  consult  with  the  independent  accountants  out  of  the
        presence of management about  internal controls and the completeness and
        accuracy of the organization's financial statements.

Financial Reporting Processes
- -----------------------------
9.      In  consultation  with  the  independent  accountants  and the  internal
        auditors,  review the  integrity of the  Company's  financial  reporting
        processes, both internal and external.

10.     Consider the  independent accountants'  judgments about the  quality and
        appropriateness of the Company's accounting principles as applied in its
        financial reporting.

11.     Consider and approve,  if  appropriate,  major  changes to the Company's
        auditing and  accounting  principles  and  practices as suggested by the
        independent   accountants,   management,   or  the   internal   auditing
        department.

                                       24





Process Improvement
- -------------------
12.     Establish  regular  and  separate  systems  of  reporting  to the  Audit
        Committee by each of management,  the  independent  accountants  and the
        internal   auditors   regarding  any   significant   judgments  made  in
        management's  preparation  of the financial  statements  and the view of
        each as to appropriateness of such judgments.

13.     Following completion of the annual audit, review separately with each of
        management,  the  independent  accountants  and  the  internal  auditing
        department any significant difficulties encountered during the course of
        the audit.

14.     Review any significant disagreement among management and the independent
        accountants or  the internal auditing  department in connection with the
        preparation of the financial statements.

15.     Review  with  the  independent   accountants,   the  internal   auditing
        department and management the extent to which changes or improvements in
        financial or accounting  practices,  as approved by the Audit Committee,
        have  been   implemented.   (This  review  should  be  conducted  at  an
        appropriate   time   subsequent   to   implementation   of   changes  or
        improvements, as the Committee decides.)

Ethical and Legal Compliance
- ----------------------------
16.     Establish,  review and update periodically Standards of Business Conduct
        and evaluate whether management has established systems to enforce these
        standards.

17.     Review management's  monitoring of the Company's compliance programs and
        evaluate  whether  management  has the proper review systems in place to
        ensure  that the  Company's  financial  statements,  reports  and  other
        financial information disseminated to governmental organizations and the
        public satisfy legal requirements.

18.     Review activities,  organizational structure,  and qualifications of the
        internal audit function.

19.     Review with the  Company's  in-house or outside  legal counsel any legal
        matter that could have a significant  effect on the Company's  financial
        statements.

20.     Prepare  the report  required by  rules of the  Securities and  Exchange
        Commission to be included in the Company's annual proxy statement.

        Perform any other activities consistent with this Charter, the Company's
Certificate  of  Incorporation  and  Bylaws,  the  rules of the New  York  Stock
Exchange applicable to its listed companies,  and governing law as the Committee
or the Board deems necessary or appropriate.

V       AUTHORITY AND LIMITATIONS

        The Audit  Committee  shall have the  authority  to take all  actions it
deems advisable to fulfill its  responsibilities and duties. The Audit Committee
shall have the authority to retain special legal counsel, accounting experts, or
other consultants to advise the Committee, which may be the same as or different
from  the  Company's  primary  legal  counsel,   accounting  experts  and  other
consultants.  The Audit  Committee  may  require  any officer or employee of the
Company or any of its subsidiaries, the Company's outside legal counsel, and the
Company's  external  auditors  to meet with the  Committee  or any member of the
Committee.

        While the Audit Committee has the  responsibilities and powers set forth
in this Charter and  management and the  independent  accountant for the Company
are ultimately accountable to the Board of Directors and the Audit Committee, it
is not the duty of the Audit Committee to plan or conduct audits or to determine
that the  Company's  financial  statements  are complete and accurate and are in
accordance  with  generally  accepted   accounting   principles.   This  is  the
responsibility of management.  It is also not the duty of the Audit Committee to
initiate and conduct investigations, to resolve disagreements between management
and the independent  auditor,  or to insure  compliance with laws,  regulations,
Standards of Business Conduct, or compliance with compliance policies.


                                       25





            Information Statement for Holders of Exchangeable Shares
                                       of
                      Pioneer Natural Resources Canada Inc.

        The enclosed Proxy Statement and related materials pertaining to Pioneer
Natural  Resources  Company  ("Pioneer")  have been  provided  to all holders of
Exchangeable  Shares of Pioneer Natural Resources Canada Inc. ("Pioneer Canada")
for the  purposes of  Pioneer's  annual  meeting of  stockholders  (the  "Annual
Meeting") to be held on May 17, 2001 at 9:00 a.m.  (Dallas,  Texas time), in the
Carrollton Room at the Dallas  Marriott Las Colinas Hotel,  223 West Las Colinas
Blvd., Irving, Texas 75039. As a holder of Exchangeable Shares, you are entitled
to dividend and other rights  designed to be equivalent to the attributes of the
Common  Stock of Pioneer,  including  the right,  through a Voting and  Exchange
Trust  Agreement (the "Voting  Agreement"),  to attend and to vote at the Annual
Meeting. Given the attributes of the Exchangeable Shares, you will not receive a
Notice,  Information  Circular or Proxy for an annual meeting of shareholders of
Pioneer Canada, nor will a meeting of holders of Exchangeable Shares be held.

Exercise of Voting Rights

        Pursuant to the Voting Agreement,  Computershare Trust Company of Canada
(the  "Trustee")  holds one share of special  preferred  voting stock of Pioneer
(the "Voting  Share") for the benefit of the holders (other than Pioneer and its
subsidiaries) of the Exchangeable  Shares.  The Voting Share carries a number of
votes,  exercisable at any meeting at which Pioneer stockholders are entitled to
vote  (including  the  Annual  Meeting),  equal  to the  number  of  outstanding
Exchangeable  Shares  (other than shares held by Pioneer and its  subsidiaries).
You are entitled to instruct  the Trustee to exercise one of the votes  attached
to the  Voting  Share  for each  Exchangeable  Share  you  hold,  or to grant to
Pioneer's  management  a proxy to  exercise  such votes in  accordance  with the
enclosed Proxy Statement.  Alternatively,  you may instruct the Trustee to grant
to you or your  designee  a proxy to attend the Annual  Meeting  and  personally
exercise your voting  rights.  For this  purpose,  the Trustee has furnished (or
caused  Pioneer to furnish) the enclosed  Proxy  Statement  and certain  related
materials to you as a holder of Exchangeable Shares.

        To  instruct  the  Trustee as to how you want to  exercise  your  voting
rights, you must complete,  sign, date and return the enclosed form of direction
(the "Direction") to the Trustee by no later than 12:00 p.m. noon (Calgary time)
on May 15, 2001 (the "Due  Time").  If the Trustee  does not receive  your fully
completed  Direction by the Due Time,  your voting rights will not be exercised.
You may revoke or amend your  instructions  to the Trustee (as indicated in your
Direction)  at any time up to and  including  the Due Time by  delivering to the
Trustee a written notice of revocation or by completing,  signing and delivering
to the  Trustee a new  Direction  bearing a later  date.  You may also revoke or
amend  your  instructions  in person at the  Annual  Meeting  prior to 9:00 a.m.
(Dallas,  Texas time) on May 17,  2001,  by  submitting  a written  amendment or
revocation of your  instructions and presenting  satisfactory  identification to
the  Trustee's  representatives  at the Annual  Meeting.  In either  case,  your
instructions of the later date will be binding on the Trustee.

General

        Pioneer  Canada and certain of the insiders  thereof have been  exempted
from certain disclosure and insider trading obligations  prescribed by otherwise
applicable  Canadian  securities  legislation  pursuant to discretionary  orders
granted by each of the provincial securities commissions in Canada.  Pursuant to
such orders, Pioneer Canada is not required to prepare and file annual proxy and
related documentation,  quarterly reports, certain material change reports or an
annual information form,  provided that Pioneer prepares and files United States
continuous  disclosure  documentation  in  Canada  which is  equivalent  to such
disclosure and which is set forth in the  Multijurisdictional  Disclosure System
adopted by the Canadian Securities Administrators.

                                      # # #

        Please complete,  sign and date the enclosed  Direction and return it to
the Trustee in the enclosed  envelope by no later than 12:00 p.m.  noon (Calgary
time) on May 15, 2001.


                                       26





                   DIRECTION GIVEN BY HOLDERS OF EXCHANGEABLE
                 SHARES OF PIONEER NATURAL RESOURCES CANADA INC.
             FOR THE MAY 17, 2001 ANNUAL MEETING OF STOCKHOLDERS OF
                        PIONEER NATURAL RESOURCES COMPANY


The  undersigned  acknowledges  receipt  of the Notice  and Proxy  Statement  in
connection  with the annual meeting (the  "Meeting") of  stockholders of Pioneer
Natural Resources Company to be held on May 17, 2001 at 9:00 a.m. (Dallas, Texas
time) at the Dallas  Marriott  Las Colinas  Hotel,  223 West Las Colinas  Blvd.,
Irving, Texas 75039. The undersigned hereby instructs and directs  Computershare
Trust  Company of Canada  (the  "Trustee"),  pursuant to the  provisions  of the
Voting and Exchange  Trust  Agreement  dated  December  18, 1997 among  Pioneer,
Pioneer Natural  Resources Canada Inc.  ("Pioneer  Canada") and the Trustee,  as
follows:

                                     * * * *

(Please  note:  If no direction is made and you sign below the Trustee is hereby
authorized  and  directed to vote for items 1 and 2 listed under  Alternative  A
below,  and as to any other matters that may properly come before the Meeting in
its discretion.)

                                     * * * *

     (Please select one of A, B or C, and sign and date on the reverse side)

A.      [  ]   Exercise or cause to be exercised,  whether by proxy given by the
               Trustee  to  a  representative  of  Pioneer  or  otherwise,   the
               undersigned's voting rights at the Meeting,  or any  postponement
               or adjournment thereof, as follows:

        1.     To elect  R.  Hartwell  Gardner and  James L. Houghton as Class I
               Directors of Pioneer. If any such nominees should be unavailable,
               the Trustee may vote for substitute nominee(s) at its discretion:

               [  ]  FOR all nominees listed      [  ]  TO WITHHOLD authority to
                     above (except as marked            vote for all nominees
                     to the contrary)                   listed above

               [  ]  WITHHOLD AUTHORITY for the following nominee(s) only:
                     ----------------------------------------------------

        2.     To  ratify the  appointment of  Ernst & Young LLP as  independent
               auditors for the fiscal year ending December 31, 2001.

               [  ]   FOR          [  ]  AGAINST          [  ]  ABSTAIN

        3.     To transact such other  business as may  properly come before the
               Meeting or any postponement or adjournment thereof.

B.             [ ] Deliver a proxy card to the undersigned at the Meeting,  with
               respect  to all  Exchangeable  Shares of Pioneer  Canada  held of
               record by the undersigned on the record date for the Meeting (and
               not  subsequently  disposed  of)  so  that  the  undersigned  may
               exercise  personally  the  undersigned's  voting  rights  at  the
               Meeting, or any postponement or adjournment thereof.

C.             [  ] Deliver a proxy card to _________________________________ at
               _____________________________________________, as the designee of
               the  undersigned  to  attend  and act for  and on  behalf  of the
               undersigned  at the  Meeting  with  respect  to all  Exchangeable
               Shares of Pioneer Canada held of record by the undersigned on the
               record date for the Meeting  (and not  subsequently  disposed of)
               with  all the  powers  that  the  undersigned  would  possess  if
               personally  present  and acting  thereat  including  the power to
               exercise the undersigned's  voting rights at the Meeting,  or any
               postponement or adjournment thereof.

                                       27






                                     * * * *

Please  sign   exactly  as  your  name  appears  on  your   Exchangeable   Share
certificate(s)  and return this form in the enclosed  envelope.  When signing as
executor,  administrator,  attorney,  trustee,  guardian or custodian,  or for a
corporation,  please give the full title as such. If the Exchangeable Shares are
held in a joint account, each joint owner must sign.


Signature:____________________________       Date:____________________________

Print Name:___________________________

Signature:____________________________       Date:____________________________

Print Name:___________________________



                                       28





PROXY BY MAIL                            Please mark your votes like this  [ X ]

THIS PROXY WILL BE VOTED AS DIRECTED, OR IF NO DIRECTION IS INDICATED, WILL BE
VOTED "FOR" THE PROPOSALS. THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF
DIRECTORS. TO BE VALID, THIS PROXY MUST BE SIGNED.

The Board of Directors recommends a vote FOR Items 1 and 2.

ITEM 1 - ELECTION OF DIRECTORS

Nominees:                                                     WITHHELD
                                        FOR                   FOR ALL

01   R. Hartwell Gardner                [  ]                    [  ]
02   James L. Houghton                  [  ]                    [  ]

WITHHELD FOR: (Write that nominee's name in the space provided below.)
- ---------------------------------------------

ITEM 2 - RATIFICATION OF SELECTION OF INDEPENDENT ACCOUNTANTS

               [  ]  FOR          [  ]  AGAINST         [  ]  ABSTAIN

ITEM 3 - IN THE  DISCRETION  OF THE PROXIES ON ANY OTHER MATTERS AS MAY PROPERLY
COME BEFORE THE MEETING OR ANY ADJOURNMENT(S) THEREOF.

IF YOU WISH TO VOTE ELECTRONICALLY PLEASE READ THE INSTRUCTIONS BELOW

                      COMPANY NUMBER:

                      PROXY NUMBER:

                      ACCOUNT NUMBER:

Signature ______________________ Signature ______________________  Date _______

NOTE: Please sign exactly as name appears hereon. Joint owners should each sign.
When signing as attorney,  executor, administrator,  trustee or guardian, please
give full title as such.

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

FOLD AND DETACH HERE AND READ THE REVERSE SIDE

                                VOTE BY INTERNET

                        PIONEER NATURAL RESOURCES COMPANY

- -    You can now vote your  shares  electronically  through  the  Internet.
- -    This eliminates the need to return the proxy card.
- -    Your  electronic  vote  authorizes the named proxies to vote your shares in
     the same  manner as if you marked,  signed,  dated and  returned  the proxy
     card.

TO VOTE YOUR PROXY BY MAIL
Mark,  sign and date your  proxy  card  above,  detach  it and  return it in the
postage-paid envelope provided.


                                       29





TO VOTE YOUR PROXY BY INTERNET
www.continentalstock.com

Have your  proxy card in hand when you  access  the above  website.  You will be
prompted to enter the company number,  proxy number and account number to create
an electronic ballot. Follow the prompts to vote your shares.

                  PLEASE DO NOT RETURN THE ABOVE CARD IF VOTED
                                 ELECTRONICALLY

SECURITY CODE:

PROXY

THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS

                        PIONEER NATURAL RESOURCES COMPANY

The  undersigned  hereby  appoints  Scott D.  Sheffield  and Mark L.  Withrow as
proxies, with power to act without the other and with power of substitution, and
hereby  authorizes  them to represent and vote, as designated on the other side,
all the shares of stock of Pioneer  Natural  Resources  Company  standing in the
name of the undersigned  with all powers which the undersigned  would possess if
present at the Annual Meeting of  Stockholders of the Company to be held May 17,
2001 or any adjournment thereof.

       (Continued, and to be marked, dated and signed, on the other side)

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

                              FOLD AND DETACH HERE



              Access to Pioneer shareholder account information and
               other shareholder services are now available on the
                                    Internet!

                  Visit Continental Stock Transfer's website at

                            www.continentalstock.com

                  for their new Internet Shareholder Service -
                                 ContinentaLink

Through  this new  service,  shareholders  can select a Personal  Identification
Number or "PIN" to secure access to personal  shareholder  records.  With a PIN,
shareholders can change  addresses,  receive  electronic forms, and view account
transaction history and dividend history.

To access this new service,  visit the website listed above. From the home page,
select  ContinentaLink  Full Service.  From there, you can either Test Drive the
service  (choose  "Test  Drive"  button) or you can  Sign-Up  (choose  "Sign-Up"
button). If you choose to sign-up, enter your taxpayer  identification number or
social  security  number as your ID Number.  Your personal  Security Code can be
found on the reverse side of this card in the bottom left corner. Enter any four
alphanumeric  characters  you would like to use for your PIN.  Re-enter the same
PIN in the PIN Verification field. Your PIN will be activated overnight, and you
will be able to access your shareholder records the following day.


                                       30




            Please fold and detach card at perforation before mailing
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Pioneer Natural Resources USA, Inc. 401(k) Plan

TO:   THE VANGUARD GROUP, TRUSTEE FOR THE EMPLOYER MATCHING CONTRIBUTION
(STOCK ACCOUNT) OF THE PIONEER NATURAL RESOURCES USA, INC 401(k) PLAN.

In connection with the proxy materials I received relating to the Annual Meeting
of Shareholders of Pioneer Natural Resources Company to be held on Thursday, May
17, 2001, I direct you to execute a proxy as indicated below with respect to all
shares of common stock of Pioneer Natural  Resources Company to which I have the
right to give voting directions under the Employer Matching  Contribution (Stock
Account) of the Pioneer  Natural  Resources USA, Inc.  401(k) plan. I understand
you will hold these directions strictly confidential.

                                                Date ________________, 2001

                                   SHARES       Please mark,  sign
                                                (exactly  as  name
                                                appears  at  left,
                                                date and mail this
                                                card  promptly  in
                                                the  postage  paid
                                                return    envelope
                                                provided.

                                                -------------------------------
                                                Signature

                                                THIS PARTICIPANTS' DIRECTION IS
                                                CONTINUED ON THE BACK OF THIS
                                                CARD.

            Please fold and detach card at perforation before mailing
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
                                                                  PROXY BY MAIL
Please mark your boxes like this [  X  ]

 THIS PROXY WILL BE VOTED AS DIRECTED, OR IF NO DIRECTION IS INDICATED, WILL BE
  VOTED "FOR" THE PROPOSALS. THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF
                 DIRECTORS OF PIONEER NATURAL RESOURCES COMPANY.

                     TO BE VALID, THIS PROXY MUST BE SIGNED

The Board of Directors recommends a vote FOR Items 1 and 2.

ITEM 1 - ELECTION OF DIRECTORS

Nominees:                                                     WITHHELD
                                                       FOR    FOR ALL

01   R. Hartwell Gardner                               [  ]     [  ]
02   James L. Houghton                                 [  ]     [  ]

WITHHELD FOR: (Write that nominee's name in the space
 provided below.)
- ---------------------------------------------

ITEM 2 - RATIFICATION OF SELECTION OF                  FOR    AGAINST   ABSTAIN
INDEPENDENT ACCOUNTANTS                                [  ]     [  ]      [  ]

ITEM 3 - IN THE  DISCRETION  OF THE PROXIES ON ANY OTHER MATTERS AS MAY PROPERLY
COME BEFORE THE MEETING OR ANY ADJOURNMENT(S) THEREOF.

                                       31