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


                                    FORM 10-Q


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

                  For the quarterly period ended March 31, 2005

                                       or

              / / TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934
               For the transition period from _______ to ________


                         Commission File Number: 1-13245


                        PIONEER NATURAL RESOURCES COMPANY
             ------------------------------------------------------
             (Exact name of Registrant as specified in its charter)


                  Delaware                                  75-2702753
    -----------------------------------------           -------------------
        (State or other jurisdiction of                  (I.R.S. Employer
        incorporation or organization)                  Identification No.)

5205 N. O'Connor Blvd., Suite 900, Irving, Texas               75039
- ------------------------------------------------             ----------
   (Address of principal executive offices)                  (Zip Code)

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

                                 Not applicable
              ----------------------------------------------------
              (Former name, former address and former fiscal year,
                          if changed since last report)

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

                                Yes / x / No / /

Indicate  by check mark  whether  the  Registrant  is an  accelerated  filer (as
defined in Rule 12b-2 of the Exchange Act).

                                Yes / x / No / /



Number of shares of Common Stock outstanding as of May 2, 2005...... 143,985,774










                        PIONEER NATURAL RESOURCES COMPANY

                                TABLE OF CONTENTS
                                                                         Page

Definitions of Oil and Gas Terms and Conventions Used Herein.............  3

                          PART I. FINANCIAL INFORMATION

Item 1.        Financial Statements

               Consolidated Balance Sheets as of March 31, 2005 and
                  December 31, 2004......................................  4

               Consolidated Statements of Operations for the
                  three months ended March 31, 2005 and 2004.............  6

               Consolidated Statement of Stockholders' Equity for
                  the three months ended March 31, 2005..................  7

               Consolidated Statements of Cash Flows for the
                  three months ended March 31, 2005 and 2004.............  8

               Consolidated Statements of Comprehensive Income (Loss)
                  for the three months ended March 31, 2005 and 2004.....  9

               Notes to Consolidated Financial Statements................ 10

Item 2.        Management's Discussion and Analysis of Financial
                  Condition and Results of Operations.................... 27

Item 3.        Quantitative and Qualitative Disclosures About
                  Market Risk............................................ 38

Item 4.        Controls and Procedures................................... 40

                          PART II. OTHER INFORMATION

Item 1.        Legal Proceedings......................................... 41


Item 2.        Unregistered Sales of Equity Securities and
                  Use of Proceeds........................................ 41


Item 6.        Exhibits.................................................. 42

Signatures     .......................................................... 43

Exhibit Index  .......................................................... 44

Cautionary Statement Concerning Forward-Looking Statements

     The  information   included  in  this  document  includes   forward-looking
statements  that are made pursuant to the Safe Harbor  Provisions of the Private
Securities  Litigation  Reform Act of 1995.  Forward-looking  statements and the
business  prospects  of Pioneer  Natural  Resources  Company  ("Pioneer"  or the
"Company") are subject to a number of risks and uncertainties that may cause the
Company's  actual  results  in  future  periods  to differ  materially  from the
forward-looking  statements.  These risks and uncertainties include, among other
things,   volatility  of  oil  and  gas  prices,   product  supply  and  demand,
competition,  government  regulation  or action,  international  operations  and
associated  international  political and economic instability,  litigation,  the
costs and results of drilling and operations,  the Company's  ability to replace
reserves,  implement its business plans, or complete its development projects as
scheduled,  access to and cost of  capital,  uncertainties  about  estimates  of
reserves,  quality of technical data,  environmental  and weather risks, acts of
war or  terrorism.  These and other risks are  described in the  Company's  2004
Annual Report on Form 10-K, as amended, and other filings with the SEC.


                                        2






Definitions of Oil and Gas Terms and Conventions Used Herein

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

       o "Bbl" means a standard barrel containing 42 United States gallons.
       o "Bcf" means billion cubic feet.
       o "BOE" means  a barrel  of oil  equivalent and  is a standard convention
         used to express  oil and  gas volumes  on a  comparable oil  equivalent
         basis. Gas equivalents are determined under the relative energy content
         method by  using the  ratio of  6.0 Mcf  of gas  to 1.0  Bbl of  oil or
         natural gas liquid.
       o "BOEPD" means BOE per day.
       o "Btu" means British thermal unit,  which is a  measure of the amount of
         energy required to  raise the  temperature  of one  pound of  water one
         degree Fahrenheit.
       o "LIBOR" means London Interbank Offered Rate,  which is a market rate of
         interest.
       o "Mcf" means  one thousand  cubic  feet and  is a measure of natural gas
         volume.
       o "MMBbl" means one million Bbls.
       o "MMBOE" means one million BOEs.
       o "MMBtu" means one million Btus.
       o "NGL" means natural gas liquid.
       o "NYMEX" means the New York Mercantile Exchange.
       o "proved reserves"  mean the estimated quantities  of crude oil, natural
         gas,  and natural  gas liquids  which  geological and  engineering data
         demonstrate with reasonable certainty to be recoverable in future years
         from known reservoirs under existing economic and operating conditions,
         i.e.,  prices  and costs  as of  the date the estimate is made.  Prices
         include consideration  of changes in existing  prices provided  only by
         contractual  arrangements,  but not on  escalations  based  upon future
         conditions.
              (i) Reservoirs are considered  proved if economic producibility is
         supported by either actual production or conclusive formation test. The
         area of  a  reservoir  considered  proved  includes  (A)  that  portion
         delineated  by  drilling  and  defined  by  gas-oil  and/or   oil-water
         contacts, if any;  and (B) the  immediately adjoining portions  not yet
         drilled,  but which can be reasonably judged as economically productive
         on the basis  of available  geological and  engineering  data.  In  the
         absence of information on fluid contacts,  the lowest  known structural
         occurrence  of  hydrocarbons  controls  the  lower proved  limit of the
         reservoir.
              (ii) Reserves   which   can  be   produced  economically   through
         application of improved  recovery techniques (such  as fluid injection)
         are included in the "proved" classification  when successful testing by
         a pilot  project, or  the operation  of an  installed  program  in  the
         reservoir,  provides support  for the engineering analysis on which the
         project or program was based.
              (iii) Estimates of  proved reserves do  not include the following:
         (A) oil  that  may  become  available  from  known  reservoirs  but  is
         classified separately as  "indicated  additional  reserves";  (B) crude
         oil, natural gas,  and natural  gas liquids,  the recovery  of which is
         subject to  reasonable  doubt  because of  uncertainty  as to  geology,
         reservoir characteristics,  or economic factors; (C) crude oil, natural
         gas,  and natural gas liquids,  that may occur in  undrilled prospects;
         and (D) crude oil, natural gas,  and natural  gas liquids,  that may be
         recovered  from oil  shales,  coal,  gilsonite and  other such sources.
       o "SEC" means the United States Securities and Exchange Commission.
       o With respect to information on the  working interest in wells, drilling
         locations and acreage,  "net" wells,  drilling locations and  acres are
         determined by  multiplying "gross" wells,  drilling locations and acres
         by the Company's working interest in such wells,  drilling locations or
         acres.  Unless  otherwise  specified,  wells,  drilling  locations  and
         acreage statistics  quoted  herein  represent  gross   wells,  drilling
         locations or acres.
       o Unless otherwise indicated,  all currency amounts are expressed in U.S.
         dollars.




                                        3






                          PART I. FINANCIAL INFORMATION

Item 1.         Financial Statements

                        PIONEER NATURAL RESOURCES COMPANY

                           CONSOLIDATED BALANCE SHEETS
                                 (in thousands)



                                                                       March 31,     December 31,
                                                                         2005            2004
                                                                     -----------     -----------
                                                                      (Unaudited)
                                     ASSETS
                                                                               
Current assets:
  Cash and cash equivalents........................................  $    16,039     $     7,257
  Accounts receivable:
     Trade, net of allowance for doubtful accounts of $7,348
       as of March 31, 2005 and December 31, 2004..................      222,742         207,696
     Due from affiliates...........................................        2,132           2,583
  Inventories......................................................       41,256          40,332
  Prepaid expenses.................................................        8,355          10,822
  Deferred income taxes............................................      188,124         115,206
  Other current assets:
     Derivatives...................................................          157             209
     Other, net of allowance for doubtful accounts of $4,486
       as of March 31, 2005 and December 31, 2004..................        9,056           9,320
                                                                      ----------      ----------
          Total current assets.....................................      487,861         393,425
                                                                      ----------      ----------
Property, plant and equipment, at cost:
  Oil and gas properties, using the successful efforts method
  of accounting:
     Proved properties.............................................    7,861,900       7,654,181
     Unproved properties...........................................      476,705         470,435
  Accumulated depletion, depreciation and amortization.............   (2,395,972)     (2,243,549)
                                                                      ----------      ----------
          Total property, plant and equipment......................    5,942,633       5,881,067
                                                                      ----------      ----------
Deferred income taxes..............................................        2,038           2,963
Goodwill...........................................................      307,951         315,880
Other property and equipment, net..................................       82,244          78,696
Other assets:
  Derivatives......................................................        1,595             -
  Other, net of allowance for doubtful accounts of $92 as of
     March 31, 2005 and December 31, 2004..........................       58,015          56,436
                                                                      ----------      ----------
                                                                     $ 6,882,337     $ 6,728,467
                                                                      ==========      ==========





  The financial information included as of March 31, 2005 has been prepared by
          management without audit by independent public accountants.

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




                                        4





                        PIONEER NATURAL RESOURCES COMPANY

                     CONSOLIDATED BALANCE SHEETS (Continued)
                        (in thousands, except share data)





                                                                         March 31,     December 31,
                                                                           2005            2004
                                                                       -----------     ------------
                                                                        (Unaudited)

                      LIABILITIES AND STOCKHOLDERS' EQUITY
                                                                                 
Current liabilities:
  Accounts payable:
     Trade...........................................................  $   279,580     $   205,153
     Due to affiliates...............................................        3,274          10,898
  Interest payable...................................................       29,976          45,735
  Income taxes payable...............................................       16,295          13,520
  Other current liabilities:
     Derivatives.....................................................      438,969         224,612
     Deferred revenue................................................       84,469             -
     Other...........................................................       70,436          44,541
                                                                        ----------      ----------
          Total current liabilities..................................      922,999         544,459
                                                                        ----------      ----------
Long-term debt.......................................................    1,831,938       2,385,950
Derivatives..........................................................      382,700         182,803
Deferred income taxes................................................      518,291         607,415
Deferred revenue.....................................................      545,811             -
Other liabilities and minority interests.............................      173,658         176,060
Stockholders' equity:
  Common stock, $.01 par value; 500,000,000 shares authorized;
     146,798,361 and 145,644,828 shares issued at March 31, 2005
     and December 31, 2004, respectively.............................        1,468           1,456
  Additional paid-in capital.........................................    3,761,660       3,705,286
  Treasury stock, at cost; 2,896,434 and 813,166 shares at
     March 31, 2005 and December 31, 2004, respectively..............     (118,215)        (27,793)
  Deferred compensation..............................................      (64,750)        (22,558)
  Accumulated deficit................................................     (600,361)       (634,146)
  Accumulated other comprehensive income (loss):
     Net deferred hedge losses, net of tax...........................     (522,124)       (241,350)
     Cumulative translation adjustment...............................       49,262          50,885
                                                                        ----------      ----------
          Total stockholders' equity.................................    2,506,940       2,831,780
Commitments and contingencies
                                                                        ----------      ----------
                                                                       $ 6,882,337     $ 6,728,467
                                                                        ==========      ==========



  The financial information included as of March 31, 2005 has been prepared by
           management without audit by independent public accountants.

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


                                        5





                        PIONEER NATURAL RESOURCES COMPANY

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




                                                                   Three months ended
                                                                       March 31,
                                                                -----------------------
                                                                   2005          2004
                                                                ---------     ---------
                                                                        
Revenues and other income:
    Oil and gas..............................................   $ 520,312     $ 435,527
    Interest and other.......................................      28,333         1,735
    Gain (loss) on disposition of assets, net................       2,221           (13)
                                                                 --------      --------
                                                                  550,866       437,249
                                                                 --------      --------
Costs and expenses:
    Oil and gas production...................................     113,962        78,212
    Depletion, depreciation and amortization.................     156,151       136,499
    Impairment of long-lived assets..........................         152           -
    Exploration and abandonments.............................      67,385        80,506
    General and administrative...............................      29,585        18,329
    Accretion of discount on asset retirement obligations....       2,140         1,966
    Interest.................................................      33,251        21,576
    Other....................................................      11,720           196
                                                                 --------      --------
                                                                  414,346       337,284
                                                                 --------      --------
Income before income taxes...................................     136,520        99,965
Income tax provision.........................................     (51,863)      (39,777)
                                                                 --------      --------
Net income...................................................   $  84,657     $  60,188
                                                                 ========      ========
Net income per share:
    Basic....................................................   $     .59     $     .51
                                                                 ========      ========
    Diluted..................................................   $     .58     $     .50
                                                                 ========      ========
Weighted average shares outstanding:
    Basic....................................................     142,898       118,719
                                                                 ========      ========
    Diluted..................................................     147,345       120,264
                                                                 ========      ========

Dividends declared per share.................................   $     .10     $     .10
                                                                 ========      ========





         The financial information included herein has been prepared by
           management without audit by independent public accountants.

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



                                        6





                        PIONEER NATURAL RESOURCES COMPANY

                 CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY
                      (in thousands, except per share data)
                                   (Unaudited)



                                                                                               Accumulated Other
                                                                                           Comprehensive Income (Loss)
                                                                                           ---------------------------
                                                                                                Net
                                                                                              Deferred
                                            Additional                                         Hedge      Cumulative      Total
                                    Common   Paid-in    Treasury    Deferred    Accumulated    Losses,    Translation  Stockholders'
                                    Stock    Capital      Stock   Compensation    Deficit    Net of Tax   Adjustment      Equity
                                    ------  ----------  --------  ------------  -----------  -----------  -----------  ------------
                                                                                               

Balance as of January 1, 2005....   $1,456  $3,705,286  $(27,793)  $  (22,558)   $(634,146)  $ (241,350)    $ 50,885    $2,831,780

  Dividends declared ($.10 per
    common share)................       -           -         -            -       (14,394)          -            -        (14,394)
  Exercise of long-term incentive
    plan stock options...........       -           -     61,464           -       (36,478)          -            -         24,986
  Purchase of treasury stock.....       -           -   (151,886)          -            -            -            -       (151,886)
  Tax benefits related to
    stock-based compensation.....       -        8,711        -            -            -            -            -          8,711
  Deferred compensation:
    Compensation deferred........       12      48,597        -       (48,609)          -            -            -             -
    Deferred compensation
      included in net income.....       -           -         -         5,152           -            -            -          5,152
    Forfeitures of deferred
      compensation...............       -         (934)       -         1,265           -            -            -            331
  Net income.....................       -           -         -            -        84,657           -            -         84,657
  Other comprehensive income (loss):
    Net deferred hedge losses,
     net of tax:
      Net deferred hedge losses..       -           -         -            -            -      (524,596)          -       (524,596)
      Net hedge losses included
        in net income............       -           -         -            -            -        52,322           -         52,322
      Tax benefits related to
        net hedge losses.........       -           -         -            -            -       191,500           -        191,500
    Translation adjustment.......       -           -         -            -            -            -        (1,623)       (1,623)
                                     -----   ---------   --------   ----------    --------    ---------      -------     ---------

Balance as of March 31, 2005.....   $1,468  $3,761,660  $(118,215) $   (64,750)  $(600,361)   $(522,124)    $ 49,262    $2,506,940
                                    ======  ==========  =========  ===========    ========     ========      =======     =========



         The financial information included herein has been prepared by
           management without audit by independent public accountants.

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



                                        7





                        PIONEER NATURAL RESOURCES COMPANY

                      CONSOLIDATED STATEMENTS OF CASH FLOWS
                                 (in thousands)
                                   (Unaudited)




                                                                          Three months ended
                                                                                March 31,
                                                                       --------------------------
                                                                          2005            2004
                                                                       ---------       ---------
                                                                                 
Cash flows from operating activities:
    Net income......................................................   $  84,657       $  60,188
    Adjustments to reconcile net income to net cash
      provided by operating activities:
      Depletion, depreciation and amortization......................     156,151         136,499
      Impairment of long-lived assets...............................         152             -
      Exploration expenses, including dry holes.....................      58,445          78,820
      Deferred income taxes.........................................      42,972          32,720
      Loss (gain) on disposition of assets, net.....................      (2,221)             13
      Accretion of discount on asset retirement obligations.........       2,140           1,966
      Noncash interest expense......................................         696          (6,370)
      Commodity hedge related activity..............................      (3,061)        (11,392)
      Amortization of stock-based compensation......................       5,152           1,979
      Amortization of deferred revenue..............................     (11,625)            -
      Other noncash items...........................................       4,678            (658)
    Changes in operating assets and liabilities, net of effects
     from acquisition:
      Accounts receivable, net......................................     (12,033)        (33,737)
      Inventories...................................................      (1,315)            (19)
      Prepaid expenses..............................................       2,449             917
      Other current assets, net.....................................        (198)            757
      Accounts payable..............................................      17,593          (6,002)
      Interest payable..............................................     (16,259)            693
      Income taxes payable..........................................       2,775           3,058
      Other current liabilities.....................................       3,736          (5,802)
                                                                        --------        --------
         Net cash provided by operating activities..................     334,884         253,630
                                                                        --------        --------
Cash flows from investing activities:
    Payments for acquisition, net of cash acquired..................        (965)            -
    Proceeds from disposition of assets.............................     600,096             285
    Additions to oil and gas properties.............................    (226,170)       (167,226)
    Other property additions, net...................................     (11,062)         (5,360)
                                                                        --------        --------
         Net cash provided by (used in) investing activities........     361,899        (172,301)
                                                                        --------        --------
Cash flows from financing activities:
    Borrowings under long-term debt.................................     155,713          56,083
    Principal payments on long-term debt............................    (708,713)       (146,083)
    Payment of other liabilities....................................      (8,302)         (4,355)
    Exercise of long-term incentive plan stock options..............      24,986           8,495
    Purchase of treasury stock......................................    (151,886)         (5,566)
                                                                        --------        ---------
         Net cash used in financing activities......................    (688,202)        (91,426)
                                                                        --------        --------
Net increase (decrease) in cash and cash equivalents................       8,581         (10,097)
Effect of exchange rate changes on cash and cash equivalents........         201            (180)
Cash and cash equivalents, beginning of period......................       7,257          19,299
                                                                        --------        --------
Cash and cash equivalents, end of period............................   $  16,039       $   9,022
                                                                        ========        ========



         The financial information included herein has been prepared by
           management without audit by independent public accountants.

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



                                        8





                        PIONEER NATURAL RESOURCES COMPANY

             CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
                                 (in thousands)
                                   (Unaudited)






                                                                 Three months ended
                                                                      March 31,
                                                              --------------------------
                                                                 2005            2004
                                                              ---------       ---------

                                                                        
Net income.................................................   $  84,657       $  60,188
                                                               --------        --------
Other comprehensive loss:
    Net deferred hedge losses, net of tax:
      Net deferred hedge losses............................    (524,596)       (117,392)
      Net hedge losses included in net income..............      52,322          30,772
      Tax benefits related to net hedge losses.............     191,500          31,871
    Translation adjustment.................................      (1,623)         (2,241)
                                                               --------        --------
         Other comprehensive loss..........................    (282,397)        (56,990)
                                                               --------        --------
Comprehensive income (loss)................................   $(197,740)      $   3,198
                                                               ========        ========




         The financial information included herein has been prepared by
           management without audit by independent public accountants.

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



                                        9






                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                 March 31, 2005
                                   (Unaudited)


NOTE A.     Organization and Nature of Operations

     Pioneer is a Delaware  corporation  whose common stock is listed and traded
on the New York Stock Exchange.  The Company is a large  independent oil and gas
exploration  and  production  company  with  operations  in the  United  States,
Argentina, Canada, Equatorial Guinea, Nigeria, South Africa and Tunisia.

NOTE B.     Basis of Presentation

     Presentation.  In the opinion of  management,  the  unaudited  consolidated
financial statements of the Company as of March 31, 2005 and for the three-month
periods  ended March 31, 2005 and 2004  include all  adjustments  and  accruals,
consisting only of normal,  recurring accrual  adjustments,  which are necessary
for a fair  presentation of the results for the interim  periods.  These interim
results  are not  necessarily  indicative  of results  for a full year.  Certain
amounts in the prior  period  financial  statements  have been  reclassified  to
conform to the current period presentation.

     On  September  28,  2004,  the Company  completed  a merger with  Evergreen
Resources, Inc. ("Evergreen"),  as set forth in the Agreement and Plan of Merger
dated May 3, 2004, that added to the Company's  United States and Canadian asset
base and expanded its portfolio of development and exploration  opportunities in
North America.  Evergreen's  operations were primarily focused on developing and
expanding  its coal bed  methane  production  from the Raton  Basin in  southern
Colorado.

     In  accordance  with the  provisions  of Statement of Financial  Accounting
Standards ("SFAS") No. 141, "Business Combinations" ("SFAS 141"), the merger has
been  accounted  for as a purchase of  Evergreen  by Pioneer.  As a result,  the
historical  financial  statements  for the Company are those of Pioneer prior to
September 28, 2004. The accompanying  Consolidated  Statements of Operations and
Cash Flows for the three  months  ended  March 31, 2005  include  the  financial
results of the net  assets  acquired  in the  Evergreen  merger.  See Note C for
additional information regarding the Evergreen merger.

     Certain information and footnote disclosures normally included in financial
statements prepared in accordance with generally accepted accounting  principles
in the United  States have been  condensed or omitted in this Form 10-Q pursuant
to the rules and regulations of the SEC. These consolidated financial statements
should be read in connection  with the  consolidated  financial  statements  and
notes thereto  included in the Company's Annual Report on Form 10-K, as amended,
as of and for the year ended December 31, 2004.

     Inventories.  Inventories were comprised of $38.7 million and $37.9 million
of materials and supplies and $2.6 million and $2.4 million of commodities as of
March 31, 2005 and December 31, 2004, respectively.  The Company's materials and
supplies  inventory  is  primarily  comprised  of oil and gas drilling or repair
items  such as  tubing,  casing,  chemicals,  operating  supplies  and  ordinary
maintenance  materials  and parts.  The  materials  and supplies  inventory  are
primarily  acquired for use in future drilling  operations or repair  operations
and are carried at the lower of cost or market, on a first-in,  first-out basis.
Commodities  inventory is carried at the lower of average  cost or market,  on a
first-in,  first- out basis.  As of March 31, 2005 and December  31,  2004,  the
Company's  materials and supplies inventory were net of $.4 million of valuation
reserve allowances.

     Goodwill. As is described in Note C, the Company recorded $323.0 million of
goodwill  associated with the Evergreen merger. The goodwill was recorded to the
Company's  United  States  reporting  unit and is subject  to change  during the
six-month period ending September 30, 2005 if the settlement  values of monetary
assets  acquired  and  liabilities  assumed  in the  merger  differ  from  their
estimated values as of the merger date.  In accordance with Emerging Issues Task



                                       10




                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                 March 31, 2005
                                   (Unaudited)


Force  Abstract  Issue No. 00-23,  "Issues  Related to the  Accounting for Stock
Compensation under APB Opinion No. 25 and Financial  Accounting  Standards Board
("FASB")  Interpretation  No. 44",  the  Company  has reduced  goodwill by $15.0
million since September 28, 2004, including $6.0 million during the three months
ended March 31, 2005, for certain tax benefits  associated  with the exercise of
fully-vested  stock options assumed in conjunction with the Evergreen merger. In
accordance with SFAS No. 142, "Goodwill and Other Intangible  Assets",  goodwill
is not amortized to earnings but is assessed for impairment  whenever  events or
circumstances  indicate  that  impairment  of the carrying  value of goodwill is
likely,  but no less often than  annually.  If the carrying value of goodwill is
determined  to be  impaired,  it is  reduced  for  the  impaired  value  with  a
corresponding  charge to pretax earnings in the period in which it is determined
to be impaired.

     Stock-based  compensation.  The Company has a long-term incentive plan (the
"Long-Term   Incentive  Plan")  under  which  the  Company  grants   stock-based
compensation.  The Company accounts for stock-based  compensation  granted under
the  Long-Term  Incentive  Plan using the intrinsic  value method  prescribed by
Accounting  Principles  Board  Opinion No. 25,  "Accounting  for Stock Issued to
Employees" ("APB 25") and related interpretations. The Company did not grant any
stock options under the Long-Term  Incentive  Plan during the three months ended
March 31, 2005.  Stock-based  compensation expense associated with option grants
was not recognized in the  determination  of the Company's net income during the
three-month  periods ended March 31, 2005 and 2004, as all options granted under
the Long-Term  Incentive  Plan had exercise  prices equal to the market value of
the  underlying  common  stock on the dates of grant.  Stock-based  compensation
expense  associated  with  restricted  stock awards is deferred and amortized to
earnings  ratably over the vesting  periods of the awards.  See "New  accounting
pronouncement"  below for information  regarding the Company's  adoption of SFAS
No. 123 (revised 2004), "Share-Based Payment" ("SFAS 123(R)").

     The  following  table  illustrates  the pro forma  effect on net income and
earnings  per share as if the Company  had  applied  the fair value  recognition
provisions of SFAS No. 123,  "Accounting  for Stock-Based  Compensation"  ("SFAS
123") to stock-based compensation during the three-month periods ended March 31,
2005 and 2004:


                                                                   Three months ended
                                                                        March 31,
                                                                  ---------------------
                                                                    2005         2004
                                                                  --------     --------
                                                                  (in thousands, except
                                                                    per share amounts)
                                                                         
       Net income, as reported................................    $ 84,657     $ 60,188
       Plus: Stock-based compensation expense included
          in net income for all awards, net of tax (a)........       3,271        1,257
       Deduct: Stock-based compensation expense determined
          under fair value based method for all awards,
          net of tax (a)......................................      (4,242)      (3,115)
                                                                   -------      -------
       Pro forma net income...................................    $ 83,686     $ 58,330
                                                                   =======      =======
       Net income per share:
          Basic - as reported.................................    $    .59     $    .51
                                                                   =======      =======
          Basic - pro forma...................................    $    .58     $    .49
                                                                   =======      =======
          Diluted - as reported...............................    $    .58     $    .50
                                                                   =======      =======
          Diluted - pro forma.................................    $    .57     $    .49
                                                                   =======      =======
<FN>
- -----------
(a)  For the  three-month  periods  ended March 31,  2005 and 2004,  stock-based
     compensation  expense included in net income is net of tax benefits of $1.9
     million and $.7 million, respectively.  Similarly, stock-based compensation
     expense  determined  under the fair value based method for the  three-month
     periods  ended  March  31,  2005  and 2004 is net of tax  benefits  of $2.4
     million  and  $1.8  million,   respectively.  See  Note  D  for  additional
     information regarding the Company's income taxes.
</FN>


                                       11




                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                 March 31, 2005
                                   (Unaudited)


     New   accounting   pronouncements.   The  following   discussions   provide
information  about new  accounting  pronouncements  that have been issued by the
FASB:

     SFAS 123(R). On December 16, 2004, the FASB issued SFAS 123(R),  which is a
revision  of SFAS 123.  SFAS  123(R)  supersedes  APB 25 and amends SFAS No. 95,
"Statement of Cash Flows".  Generally, the approach in SFAS 123(R) is similar to
the  approach  described  in SFAS 123.  However,  SFAS 123(R)  will  require all
share-based  payments to employees,  including grants of employee stock options,
to be recognized in the Company's Consolidated Statements of Operations based on
their fair values. Pro forma disclosure is no longer an alternative.

     SFAS  123(R)  must be  adopted no later  than  January 1, 2006 and  permits
public companies to adopt its requirements using one of two methods:

o    A "modified  prospective"  method in which  compensation cost is recognized
     beginning with the effective date based on the  requirements of SFAS 123(R)
     for all share-based  payments  granted after the adoption date and based on
     the  requirements  of SFAS 123 for all awards granted to employees prior to
     the  effective  date of SFAS 123(R) that  remain  unvested on the  adoption
     date.
o    A "modified  retrospective"  method which includes the  requirements of the
     modified  prospective  method described above, but also permits entities to
     restate either all prior periods  presented or prior interim periods of the
     year of adoption based on the amounts previously  recognized under SFAS 123
     for purposes of pro forma disclosures.

The  Company has  elected to adopt the  provisions  of SFAS 123(R) on January 1,
2006 using the modified prospective method.

     As permitted by SFAS 123, the Company  currently  accounts for  share-based
payments to employees using the intrinsic value method  prescribed by APB 25 and
related  interpretations.  As such,  the  Company  generally  did not  recognize
compensation  expenses associated with employee stock option grants. The Company
has not issued  stock  options to  employees  since the year ended  December 31,
2003.  Consequently,  the adoption of SFAS  123(R)'s  fair value method will not
have a  significant  impact on the  Company's  future  results of  operations or
financial  position.  Had the Company adopted SFAS 123(R) in prior periods,  the
impact  would have  approximated  the impact of SFAS 123 as described in the pro
forma net income and earnings per share disclosures  above. The adoption of SFAS
123(R)  will have no effect on the  Company's  unvested  outstanding  restricted
stock awards.  The Company estimates that the adoption of SFAS 123(R),  based on
estimated outstanding unvested stock options, will result in future compensation
charges to general and  administrative  expenses of  approximately  $1.1 million
during 2006.

     The Company has an Employee  Stock  Purchase  Plan (the "ESPP") that allows
eligible  employees  to  annually  purchase  the  Company's  common  stock  at a
discount. The provisions of SFAS 123(R) will cause the ESPP to be a compensatory
plan.  However,  the change in accounting for the ESPP is not expected to have a
material  impact  on  the  Company's  financial  position,   future  results  of
operations or liquidity.  Historically,  the ESPP compensatory amounts have been
nominal.

     SFAS 123(R) also  requires the current tax benefits in excess of recognized
compensation expenses to be reported as a financing cash flow, rather than as an
operating cash flow as required under current  literature.  This requirement may
serve to reduce the Company's future cash flows provided by operating activities
and increase future cash flows provided by financing  activities,  to the extent
of associated tax benefits that may be realized in the future.


                                       12




                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                 March 31, 2005
                                   (Unaudited)


     FSP FAS 19-1. In April 2005,  the FASB issued Staff  Position No. FAS 19-1,
"Accounting for Suspended Well Costs ("FSP FAS 19-1").  FSP FAS 19-1 amends SFAS
No. 19, "Financial  Accounting and Reporting by Oil and Gas Producing Companies"
("SFAS 19"), to allow continued  capitalization of exploratory well costs beyond
one year from the date drilling was completed under circumstances where the well
has found a  sufficient  quantity of reserves  to justify  its  completion  as a
producing well and the enterprise is making  sufficient  progress  assessing the
reserves and the economic and operating  viability of the project.  FSP FAS 19-1
also amends SFAS 19 to require  enhanced  disclosures  of suspended  exploratory
well costs in the notes to the  financial  statements  for  annual  and  interim
periods when there has been a significant  change from the previous  disclosure.
The  guidance  in FSP FAS  19-1 is  effective  for the  first  reporting  period
beginning after April 4, 2005. The Company will adopt the new  requirements  and
include any required  disclosures in its Form 10-Q for the period ended June 30,
2005. The adoption of FSP FAS 19-1 is not expected to have a material  impact on
the Company's consolidated financial position or results of operations.

NOTE C.     Evergreen Merger

     On September 28, 2004,  Pioneer  completed its merger with  Evergreen  with
Pioneer being the surviving corporation for accounting purposes. The transaction
was accounted for as a purchase of Evergreen by Pioneer in accordance  with SFAS
141. The merger with  Evergreen  was  accomplished  through the issuance of 25.4
million  shares of Pioneer  common stock and $851.1 million of cash paid, net of
$12.1 million of acquired cash, to the Evergreen  shareholders  at closing.  The
cash  consideration  paid in the merger was financed  through  borrowings on the
Company's $900 million 364-day senior  unsecured  revolving credit facility (the
"364-Day  Credit  Agreement").  See  Note E for  additional  information  on the
364-Day Credit Agreement.

     Evergreen was a  publicly-traded  independent oil and gas company primarily
engaged in the  production,  development,  exploration  and acquisition of North
American  unconventional  gas and was one of the leading  developers of coal bed
methane reserves in the United States.  Evergreen's  operations were principally
focused on  developing  and  expanding its coal bed methane field located in the
Raton Basin in southern Colorado.  Evergreen also had operations in the Piceance
Basin in  western  Colorado,  the Uinta  Basin in eastern  Utah and the  Western
Canada Sedimentary Basin.

     The  Company  recorded  $323.0  million  of  goodwill  associated  with the
Evergreen   merger,   which  amount   represents  the  excess  of  the  purchase
consideration over the net fair value of the identifiable net assets acquired.

     The following unaudited pro forma combined condensed financial data for the
three-month  period  ended  March  31,  2004 was  derived  from  the  historical
financial  statements  of Pioneer and  Evergreen  giving effect to the Evergreen
merger as if it had  occurred  on  January  1,  2004.  The  unaudited  pro forma
combined  condensed  financial data have been included for comparative  purposes
only and are not necessarily  indicative of the results that might have occurred
had the  merger  taken  place on January  1, 2004 and are not  intended  to be a
projection of future results.


                                                 
       Revenues (in thousands)................      $  499,426
                                                     =========
       Net income (in thousands)..............      $   67,009
                                                     =========
       Net income per share:
          Basic...............................      $      .47
                                                     =========
          Diluted.............................      $      .45
                                                     =========


NOTE D.     Income Taxes

     The Company  accounts for income taxes in accordance with the provisions of
SFAS No. 109, "Accounting for Income Taxes" ("SFAS 109"). SFAS 109 requires that
the Company continually  assess both positive and negative evidence to determine



                                       13




                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                 March 31, 2005
                                   (Unaudited)


whether it is more  likely  than not that  deferred  tax assets can be  realized
prior  to  their  expiration.  Pioneer  monitors  Company-specific,  oil and gas
industry and worldwide  economic  factors and assesses the  likelihood  that the
Company's net operating loss  carryforwards and other deferred tax attributes in
the United States,  state,  local and foreign tax jurisdictions will be utilized
prior to their  expiration.  As of  March  31,  2005,  the  Company's  valuation
allowances related to foreign and domestic tax jurisdictions were $109.5 million
and $.2 million, respectively.

     On October 22, 2004, the American Jobs Creation Act (the "AJCA") was signed
into law.  The AJCA  includes a  deduction  of 85  percent  of  certain  foreign
earnings that are repatriated,  as defined in the AJCA. The Company may elect to
apply this provision to qualifying  earnings  repatriations in 2005. The Company
is evaluating the effects of the repatriation  provision;  however,  the Company
does not expect to be able to complete this  evaluation  until after Congress or
the Treasury  Department provide additional  clarifying language on key elements
of the provision.  The Company expects to complete its evaluation of the effects
of the repatriation  provision within a reasonable  period of time following the
publication of the additional clarifying language. The range of possible amounts
that the  Company is  considering  for  repatriation  under  section  965 of the
Internal  Revenue Code is between zero and $80 million with a related  potential
range of income  tax  between  zero and $5  million,  excluding  the  effects of
potential repatriation of funds that may occur as a result of the Canadian asset
divestiture  referred to in Note N. Until the Company  decides to repatriate any
foreign earnings, it will continue to treat them as permanently invested.

     Income tax provision (benefit)  attributable to net income consisted of the
following for the three-month periods ended March 31, 2005 and 2004:


                                                    Three months ended
                                                         March 31,
                                                  ----------------------
                                                    2005           2004
                                                  --------      --------
                                                      (in thousands)
                                                         
       Current:
          U.S. federal.......................     $    -        $  1,000
          Foreign............................        8,891         6,057
                                                   -------       -------
                                                     8,891         7,057
                                                   -------       -------
       Deferred:
          U.S. federal.......................       41,532        34,080
          U.S. state and local...............        1,147         1,429
          Foreign............................          293        (2,789)
                                                   -------       -------
                                                    42,972        32,720
                                                   -------       -------
                                                  $ 51,863      $ 39,777
                                                   =======       =======


NOTE E.     Long-term Debt

     Lines of credit.  During  January 2005,  the Company  entered into a second
amendment  (the  "Second  Amendment")  to  the  Company's  $700  million  5-Year
Revolving  Credit  Agreement  (the  "Revolving  Credit  Agreement")  and a first
amendment (the "First  Amendment") to the 364-Day Credit  Agreement.  The Second
Amendment  and the First  Amendment  amended  certain  sections of the Revolving
Credit Agreement and the 364-Day Credit Agreement,  respectively, to (i) provide
for the Company's  ability to enter into volumetric  production  payment ("VPP")
agreements and (ii) clarify certain definitional  matters. See Notes L and N for
additional discussion regarding the Company's entrance into VPP agreements.

     During  February 2005, the Company reduced the loan  commitments  under the
364-Day Credit Agreement by $250 million. During April 2005, the Company reduced
its loan  commitments  by an additional  $200 million  under the 364-Day  Credit
Agreement to $450 million.



                                       14




                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                 March 31, 2005
                                   (Unaudited)


     As of March 31, 2005,  the Company was in  compliance  with all of its debt
covenants.

     Senior  notes.  During  April 2005,  $131 million of the  Company's  8-7/8%
senior notes due 2005 (the "8-7/8% Notes") matured.  The Company utilized unused
borrowing capacity under its 364-Day Credit Agreement to repay the 8-7/8% Notes.

     See Note N for information  regarding the Company's redemption of a portion
of its  outstanding  9-5/8%  senior notes due 2010 (the "9-5/8%  Notes")  during
April 2005.

NOTE F.     Derivative Financial Instruments

     Fair value  hedges.  The  Company  monitors  the debt  capital  markets and
interest  rate  trends to  identify  opportunities  to enter into and  terminate
interest rate swap contracts with the objective of minimizing  costs of capital.
During the three months ended March 31,  2004,  the Company,  from time to time,
entered into interest  rate swap  contracts to hedge a portion of the fair value
of its senior  notes.  The terms of the interest  rate swap  contracts  were for
notional amounts that matched the scheduled maturity of the hedged senior notes,
required  the  counterparties  to pay the Company a fixed annual  interest  rate
equal to the stated bond coupon rates on the  notional  amounts and required the
Company to pay the counterparties variable annual interest rates on the notional
amounts  equal to the  periodic  LIBOR plus a weighted  average  annual  margin.
During the three  months ended March 31,  2004,  settlements  of open fair value
hedges reduced the Company's  interest  expense by $.2 million.  As of March 31,
2005 and December  31, 2004,  the Company was not a party to any open fair value
hedges.

     As of March 31, 2005, the carrying value of the Company's long-term debt in
the accompanying  Consolidated  Balance Sheets included a $5.7 million reduction
in the carrying  value  attributable  to net deferred hedge losses on terminated
fair value hedges that are being amortized as net increases to interest  expense
over the original terms of the terminated  agreements.  The  amortization of net
deferred  hedge gains on  terminated  interest  rate swaps reduced the Company's
reported   interest  expense  by  $2.2  million  and  $7.3  million  during  the
three-month periods ended March 31, 2005 and 2004, respectively.

     The  following  table  sets  forth,  as of March 31,  2005,  the  scheduled
amortization  of net deferred hedge gains  (losses) on terminated  interest rate
hedges  (including  terminated  fair  value and cash flow  hedges)  that will be
recognized  as  increases  in the case of losses,  and  decreases in the case of
gains, to the Company's future interest expense:



                                    2005     2006     2007      2008      2009     Thereafter
                                   ------   ------   -------   -------   -------   ----------
                                                       (in thousands)
                                                                 

Net deferred hedge gains (losses)  $1,205   $  625   $(2,222)  $(1,937)  $(2,351)   $(5,913)
                                   ======    =====    ======    ======    ======     ======


     Cash flow hedges.  The Company utilizes commodity swap and collar contracts
to (i) reduce the effect of price  volatility  on the  commodities  the  Company
produces and sells,  (ii) support the  Company's  annual  capital  budgeting and
expenditure  plans and (iii) reduce commodity price risk associated with certain
capital  projects.  The Company also, from time to time,  utilizes interest rate
contracts  to reduce the effect of interest  rate  volatility  on the  Company's
indebtedness  and forward currency  exchange  agreements to reduce the effect of
U.S. dollar to Canadian dollar exchange rate volatility.



                                       15




                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                 March 31, 2005
                                   (Unaudited)



     Oil prices.  All material physical sales contracts  governing the Company's
United  States oil  production  have been tied  directly or  indirectly to NYMEX
prices.  As of  March  31,  2005,  all of the  Company's  commodity  hedges  are
designated as hedges of United States forecasted sales. The following table sets
forth the volumes hedged in Bbls underlying the Company's  outstanding oil hedge
contracts and the weighted  average NYMEX prices per Bbl for those  contracts as
of March 31, 2005:


                                               First          Second           Third          Fourth        Outstanding
                                              Quarter         Quarter         Quarter         Quarter         Average
                                           -------------   -------------   -------------   -------------   -------------
                                                                                            
Average daily oil production hedged (a):
     2005 - Swap Contracts
         Volume (Bbl)....................                         27,000          27,000          27,000          27,000
         Price per Bbl...................                  $       27.97   $       27.97   $       27.97   $       27.97

     2006 - Swap Contracts
         Volume (Bbl)....................         11,973          11,973          11,973          11,973          11,973
         Price per Bbl...................  $       35.43   $       35.43   $       35.43   $       35.43   $       35.43

     2006 - Collar Contracts
         Volume (Bbl)....................          3,500           3,500           3,500           3,500           3,500
         Price per Bbl...................  $35.00-$41.95   $35.00-$41.95   $35.00-$41.95   $35.00-$41.95   $35.00-$41.95

     2007 - Swap Contracts
         Volume (Bbl)....................         13,000          13,000          13,000          13,000          13,000
         Price per Bbl...................  $       30.89   $       30.89   $       30.89   $       30.89   $       30.89

     2008 - Swap Contracts
         Volume (Bbl)....................         20,278          20,278          20,278          20,278          20,278
         Price per Bbl...................  $       32.46   $       32.46   $       32.46   $       32.46   $       32.46

     2009 - Swap Contracts
         Volume (Bbl)....................          1,643           1,643           1,643           1,643           1,643
         Price per Bbl...................  $       47.25   $       47.25   $       47.25   $       47.25   $       47.25

     2010 - Swap Contracts
         Volume (Bbl)....................          1,643           1,643           1,643           1,643           1,643
         Price per Bbl...................  $       46.40   $       46.40   $       46.40   $       46.40   $       46.40
<FN>
- ---------------
(a)  Subsequent to March 31, 2005, the Company  conveyed to the purchaser of its
     April VPP the  following  oil swap  contracts  which were  included  in the
     schedule  above:  (i) 1,973  Bbls per day of 2006 oil  sales at a  weighted
     average fixed price per Bbl of $54.40,  (ii) 3,278 Bbls per day of 2008 oil
     sales at a weighted average fixed price per Bbl of $49.28, (iii) 1,643 Bbls
     per day of 2009 oil  sales at a  weighted  average  fixed  price per Bbl of
     $47.25 and (iv) 1,643 Bbls per day of 2010 oil sales at a weighted  average
     fixed  price  per Bbl of  $46.40.  See  Note N for  additional  information
     regarding the Company's April VPP.
</FN>




                                       16




                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                 March 31, 2005
                                   (Unaudited)


     The Company reports average oil prices per Bbl including the effects of oil
quality  adjustments and the net effect of oil hedges.  The following table sets
forth the Company's  oil prices,  both reported  (including  hedge  results) and
realized  (excluding  hedge  results),  and the net effect of settlements of oil
price hedges on oil revenue for the three-month periods ended March 31, 2005 and
2004:


                                                            Three months ended
                                                                 March 31,
                                                            ------------------
                                                             2005        2004
                                                            -------    -------
                                                                 
     Average price reported per Bbl...................      $ 33.27    $ 28.31
     Average price realized per Bbl...................      $ 43.29    $ 32.12
     Reduction to oil revenue (in millions)...........      $ (44.3)   $ (16.5)


     Natural gas liquids prices.  During the three-month periods ended March 31,
2005 and 2004,  the  Company did not enter into any NGL hedge  contracts.  There
were no outstanding NGL hedge contracts at March 31, 2005.

     Gas prices.  The  Company  employs a policy of hedging a portion of its gas
production based on the index price upon which the gas is actually sold in order
to mitigate the basis risk between  NYMEX  prices and actual  index  prices,  or
based on NYMEX  prices if NYMEX  prices  are  highly  correlated  with the index
price.  The following  table sets forth the volumes hedged in MMBtus  underlying
the Company's  outstanding  gas hedge  contracts and the weighted  average index
prices per MMBtu for those contracts as of March 31, 2005:


                                                First        Second         Third        Fourth      Outstanding
                                               Quarter       Quarter       Quarter       Quarter       Average
                                             -----------   -----------   -----------   -----------   -----------
                                                                                      
Average daily gas production hedged (a):
   2005 - Swap Contracts
     Volume (MMBtu)........................                    286,703       290,000       260,000       278,873
     Index price per MMBtu.................                $      5.20   $      5.23   $      5.22   $      5.22

   2006 - Swap Contracts
     Volume (MMBtu)........................       80,000        80,000        80,000        80,000        80,000
     Index price per MMBtu.................  $      4.50   $      4.50   $      4.50   $      4.50   $      4.50

   2006 - Collar Contracts
     Volume (MMBtu)........................       55,000         5,000         5,000         5,000        17,329
     Index price per MMBtu.................  $7.07-$9.70   $5.25-$7.15   $5.25-$7.15   $5.25-$7.15   $6.67-$9.14

   2007 - Swap Contracts
     Volume (MMBtu)........................       35,000        35,000        35,000        35,000        35,000
     Index price per MMBtu.................  $      4.63   $      4.63   $      4.63   $      4.63   $      4.63

   2008 - Swap Contracts
     Volume (MMBtu)........................        5,000         5,000         5,000         5,000         5,000
     Index price per MMBtu.................  $      5.38   $      5.38   $      5.38   $      5.38   $      5.38
<FN>
- --------------
(a)  Subsequent to March 31, 2005, the Company  conveyed to the purchaser of its
     April VPP the  following  gas swap  contracts  which were  included  in the
     schedule  above:  (i) 5,841  MMBtu per day of 2005 gas sales at a  weighted
     average  fixed  price per MMBtu of $7.14,  (ii) 6,158 MMBtu per day of 2006
     gas sales at a weighted  average  fixed  price per MMBtu of $6.90 and (iii)
     5,805 MMBtu per day of 2007 gas sales at a weighted average fixed price per
     MMBtu  of  $6.35.  See  Note N for  additional  information  regarding  the
     Company's April VPP.
</FN>




                                       17




                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                 March 31, 2005
                                   (Unaudited)


     The Company reports average gas prices per Mcf including the effects of Btu
content, gas processing, shrinkage adjustments and the net effect of gas hedges.
The  following  table  sets  forth  the  Company's  gas  prices,  both  reported
(including hedge results) and realized  (excluding  hedge results),  and the net
effect of  settlements  of gas price  hedges on gas revenue for the  three-month
periods ended March 31, 2005 and 2004:


                                                            Three months ended
                                                                 March 31,
                                                           ---------------------
                                                            2005          2004
                                                           -------      --------
                                                                  
     Average price reported per Mcf...................     $  5.04      $  4.38
     Average price realized per Mcf...................     $  5.16      $  4.62
     Reduction to gas revenue (in millions)...........     $  (8.0)     $ (14.2)


     Hedge ineffectiveness.  During the three-month periods ended March 31, 2005
and 2004,  the Company  recognized  other  expense of $6.8  million and $44,000,
respectively,  related  to the  ineffective  portions  of its cash flow  hedging
instruments.

     Accumulated other comprehensive  income (loss) - net deferred hedge losses,
net of tax ("AOCI - Hedging").  As of March 31, 2005 and December 31, 2004, AOCI
- - Hedging  represented net deferred losses of $522.1 million and $241.4 million,
respectively.  The AOCI - Hedging  balance as of March 31, 2005 was comprised of
$788.5  million of net deferred  losses on the  effective  portions of open cash
flow hedges, $49.8 million of net deferred losses on terminated cash flow hedges
(including  $4.9 million of net deferred losses on terminated cash flow interest
rate hedges) and $316.2  million of associated  net deferred tax  benefits.  The
increase  in AOCI - Hedging  during the three  months  ended  March 31, 2005 was
primarily  attributable to increases in future  commodity prices relative to the
commodity  prices  stipulated in the hedge  contracts,  partially  offset by the
reclassification  of net  deferred  hedge  losses to net  income as  derivatives
matured by their terms.  The net deferred losses  associated with open cash flow
hedges  remain  subject to market price  fluctuations  until the  positions  are
either  settled under the terms of the hedge  contracts or  terminated  prior to
settlement. The net deferred losses on terminated cash flow hedges are fixed.

     During the twelve months ending March 31, 2006, based on current  estimates
of future commodity prices,  the Company expects to reclassify $434.5 million of
net deferred losses  associated  with open commodity  hedges and $9.2 million of
net deferred  losses on terminated  commodity  hedges from AOCI - Hedging to oil
and gas revenues.  The Company also expects to reclassify  approximately  $162.1
million of net deferred  income tax benefits  associated  with commodity  hedges
during the twelve months ending March 31, 2006 from AOCI - Hedging to income tax
benefit.

     The  following  table  sets  forth,  as of March 31,  2005,  the  scheduled
amortization of net deferred losses on terminated  commodity hedges that will be
recognized as decreases to the Company's future oil and gas revenues:


                                              First     Second      Third     Fourth
                                             Quarter    Quarter    Quarter    Quarter      Total
                                             -------    -------    -------    -------    ---------
                                                               (in thousands)
                                                                          
      2005 net deferred hedge losses....                $  (677)   $  (934)   $(1,936)   $ (3,547)
      2006 net deferred hedge losses....     $(5,625)   $(1,676)   $(1,521)   $(2,205)    (11,027)
      2007 net deferred hedge losses....     $(4,051)   $  (936)   $  (734)   $(1,450)     (7,171)
      2008 net deferred hedge losses....     $(3,570)   $  (872)   $  (855)   $(1,487)     (6,784)
      2009 net deferred hedge losses....     $(2,817)   $  (748)   $  (785)   $(1,409)     (5,759)
      2010 net deferred hedge losses....     $(1,012)   $  (995)   $  (980)   $  (961)     (3,948)
      2011 net deferred hedge losses....     $  (873)   $  (889)   $  (902)   $  (907)     (3,571)
      2012 net deferred hedge losses....     $  (810)   $  (791)   $  (783)   $  (772)     (3,156)
                                                                                          -------
                                                                                         $(44,963)
                                                                                          =======



                                       18




                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                 March 31, 2005
                                   (Unaudited)



NOTE G.     Asset Retirement Obligations

     The Company's asset retirement  obligations  primarily relate to the future
plugging  and  abandonment  of proved  properties  and related  facilities.  The
Company  does not  provide  for a market  risk  premium  associated  with  asset
retirement  obligations  because a reliable  estimate cannot be determined.  The
Company has no assets that are legally restricted for purposes of settling asset
retirement  obligations.  The following  table  summarizes  the Company's  asset
retirement obligation transactions recorded in accordance with the provisions of
SFAS  No.  143,  "Accounting  for  Asset  Retirement   Obligations"  during  the
three-month periods ended March 31, 2005 and 2004:


                                                               Three months ended
                                                                    March 31,
                                                              ---------------------
                                                                2005         2004
                                                              --------     --------
                                                                  (in thousands)
                                                                         
       Beginning asset retirement obligations............     $120,879     $105,036
          New wells placed on production and
            changes in estimates.........................        1,445        2,732
          Liabilities settled............................       (2,400)      (2,597)
          Accretion of discount..........................        2,140        1,966
          Currency translation...........................         (127)        (103)
                                                               -------      -------
       Ending asset retirement obligations ..............     $121,937     $107,034
                                                               =======      =======


     The Company records the current and noncurrent portions of asset retirement
obligations  in other current  liabilities  and other  liabilities  and minority
interests, respectively, in the accompanying Consolidated Balance Sheets.

NOTE H.     Postretirement Benefit Obligations

     As of March 31, 2005 and December 31, 2004,  the Company had recorded $15.7
million and $15.5 million,  respectively, of unfunded accumulated postretirement
benefit  obligations,  the current and noncurrent portions of which are included
in other  current  liabilities  and other  liabilities  and minority  interests,
respectively, in the accompanying Consolidated Balance Sheets.

     The  following  table   reconciles   changes  in  the  Company's   unfunded
accumulated  postretirement  benefit  obligations during the three-month periods
ended March 31, 2005 and 2004:


                                                                       Three months ended
                                                                            March 31,
                                                                      -------------------
                                                                        2005        2004
                                                                      -------     -------
                                                                        (in thousands)
                                                                            
    Beginning accumulated postretirement benefit obligations......    $15,534     $15,556
       Benefit payments...........................................       (186)       (339)
       Service costs..............................................         81          58
       Accretion of discounts.....................................        225         226
                                                                       ------      ------
    Ending accumulated postretirement benefit obligations.........    $15,654     $15,501
                                                                       ======      ======




                                       19




                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                 March 31, 2005
                                   (Unaudited)



NOTE I.     Commitments and Contingencies

     Legal actions.  The Company is party to various legal actions incidental to
its business,  including,  but not limited to, the proceedings  described below.
The majority of these lawsuits primarily involve claims for damages arising from
oil and gas leases and ownership  interest  disputes.  The Company believes that
the ultimate disposition of these legal actions will not have a material adverse
effect on the Company's  consolidated  financial  position,  liquidity,  capital
resources or future results of operations. The Company will continue to evaluate
its  litigation  matters  on a  quarter-by-  quarter  basis and will  adjust its
litigation  reserves  as  appropriate  to  reflect  the then  current  status of
litigation.

     Alford.  The Company is party to a 1993 class action  lawsuit  filed in the
26th Judicial District Court of Stevens County, Kansas by two classes of royalty
owners,  one for  each  of the  Company's  gathering  systems  connected  to the
Company's Satanta gas plant. The case was relatively inactive for several years.
In early 2000, the plaintiffs  amended their pleadings and the case now contains
two material  claims.  First,  the plaintiffs  assert that they were  improperly
charged  expenses   (primarily  field   compression),   which  are  a  "cost  of
production",   and  for  which  the  plaintiffs,  as  royalty  owners,  are  not
responsible.  Second,  the plaintiffs  claim they are entitled to 100 percent of
the value of the helium  extracted at the  Company's  Satanta gas plant.  If the
plaintiffs  were to  prevail on the above two  claims in their  entirety,  it is
possible that the Company's  liability  (both for periods covered by the lawsuit
and from the last date  covered  by the  lawsuit  to the  present - because  the
deductions  continue  to be taken and the  plaintiffs  continue to be paid for a
royalty share of the helium) could reach  approximately  $30 million  related to
the cost of production claim and approximately $40 million related to the helium
claim,  plus prejudgment  interest.  However,  the Company believes it has valid
defenses to the plaintiffs' claims, has paid the plaintiffs properly under their
respective  oil and gas leases and other  agreements,  and intends to vigorously
defend itself.

     The  Company  does not  believe  the costs it has  deducted  are a "cost of
production".  The costs being  deducted are post  production  costs  incurred to
transport the gas to the Company's  Satanta gas plant for processing,  where the
valuable  hydrocarbon  liquids  and  helium  are  extracted  from the  gas.  The
plaintiffs  benefit from such extractions and the Company believes that charging
the  plaintiffs  with  their  proportionate  share  of such  transportation  and
processing  expenses  is  consistent  with  Kansas  law and  with  the  parties'
agreements.

     The Company has also vigorously  defended against plaintiffs' claims to 100
percent of the value of the helium  extracted,  and believes  that in accordance
with  applicable  law, it has  properly  accounted to the  plaintiffs  for their
fractional  royalty share of the helium under the specified  royalty  clauses of
the respective oil and gas leases.  The Company has not  established a provision
for the helium claim.

     The  factual  evidence  in the case  was  presented  to the  26th  Judicial
District Court without a jury in December 2001. Oral arguments were heard by the
court in April 2002,  and  although  the court has not yet entered a judgment or
findings,  it could do so at any time. The Company strongly denies the existence
of any material  underpayment to the plaintiffs and believes it presented strong
evidence at trial to support its positions. However, either through a negotiated
settlement or court ruling,  the Company could have to pay some part of the cost
of  production  claim and,  accordingly,  the Company has  established a partial
reserve for this claim.  Although the amount of any resulting liability,  to the
extent that it exceeds the Company's  provision,  could have a material  adverse
effect on the Company's results of operations for the quarterly reporting period
in which such  liability is recorded,  the Company does not expect that any such
additional  liability will have a material  adverse  effect on its  consolidated
financial  position as a whole or on its liquidity,  capital resources or future
annual results of operations.

     MOSH  Holding.  The  Company and its  principal  U.S.  subsidiary,  Pioneer
Natural  Resources  USA,  Inc.,  were named as  defendants in a case styled MOSH
Holding,  L.P. v Pioneer Natural  Resources  Company;  Pioneer Natural Resources
USA, Inc.;  Woodside  Energy (USA) Inc.; and JPMorgan Chase Bank, NA, as Trustee
of the Mesa Offshore  Trust,  which was filed on April 11, 2005, in the District
Court of  Travis County,  Texas  (250th  Judicial  District). The plaintiff is a


                                       20




                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                 March 31, 2005
                                   (Unaudited)


unitholder  in the Mesa  Offshore  Trust,  which was created in 1982 as the sole
limited partner in a partnership  that holds an overriding  royalty  interest in
certain oil and gas leases offshore  Louisiana and Texas. The plaintiff  alleges
that the Company,  together with Woodside Energy (USA) Inc., concealed the value
of  the  royalty   interest,   worked  to  terminate  the  Mesa  Offshore  Trust
prematurely,  and to capture for itself and Woodside  Energy (USA) Inc.  profits
that belong to the Mesa Offshore Trust.  The plaintiff also alleges  breaches of
fiduciary  duty,  misapplication  of trust  property,  common law  fraud,  gross
negligence,  and breach of the conveyance  agreement for the overriding  royalty
interest.  The  claims  appear to relate  principally  to  farmout  arrangements
established in 2003 for two offshore  properties,  the Brazos Area Block A-7 and
Brazos Area Block A-39. The relief sought by the plaintiff includes monetary and
punitive  damages and certain  equitable  relief,  including  an  accounting  of
expenses,  a setting  aside of certain  farmouts,  and a temporary and permanent
injunction.  The Company  believes  the claims are without  merit and intends to
defend the lawsuit vigorously.

     Argentine Environmental.  The Company's subsidiary in Argentina is involved
in various  administrative  proceedings with the Neuquen Province  environmental
authorities  relating to the permitting and discharges  from  operations in that
province.   In  general,  the  Company's  subsidiary  is  cooperating  with  the
proceedings,  although it from time to time challenges  whether certain assessed
fines are  appropriate.  The  Company  estimates  that fines  assessed  in these
proceedings will be immaterial, but in the aggregate could exceed $100,000.

NOTE J.     Net Income Per Share

     Basic net  income  per share is  computed  by  dividing  net  income by the
weighted  average  number of  common  shares  outstanding  for the  period.  The
computation of diluted net income per share reflects the potential dilution that
could occur if  securities  or other  contracts  to issue  common stock that are
dilutive to net income were exercised or converted into common stock or resulted
in the  issuance  of common  stock that would then share in the  earnings of the
Company.

     The following table is a reconciliation  of basic net income to diluted net
income for the three-month periods ended March 31, 2005 and 2004:


                                                                   Three months ended
                                                                       March 31,
                                                                  --------------------
                                                                    2005        2004
                                                                  --------    --------
                                                                     (in thousands)
                                                                        
       Basic net income.......................................    $ 84,657    $ 60,188
       Interest expense on convertible notes, net of tax......         802         -
                                                                   -------     -------
       Diluted net income.....................................    $ 85,459    $ 60,188
                                                                   =======     =======




                                       21




                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                 March 31, 2005
                                   (Unaudited)


     The following table is a  reconciliation  of basic weighted  average common
shares outstanding to diluted weighted average common shares outstanding for the
three-month periods ended March 31, 2005 and 2004:


                                                                    Three months ended
                                                                        March 31,
                                                                   --------    --------
                                                                     2005        2004
                                                                   --------    --------
                                                                      (in thousands)
                                                                         
     Weighted average common shares outstanding:
       Basic................................................        142,898     118,719
       Dilutive common stock options (a)....................          1,293       1,177
       Restricted stock awards..............................            827         368
       Convertible notes dilution (b).......................          2,327         -
                                                                   --------    --------
       Diluted..............................................        147,345     120,264
                                                                   ========    ========
<FN>
- ---------------
(a)  Common  stock  options  to  purchase  30,712  shares of common  stock  were
     outstanding but not included in the  computations of diluted net income per
     share for the three-month periods ended March 31, 2005 and 2004 because the
     exercise  prices of the options were greater than the average  market price
     of the common shares and would be anti-dilutive to the computations.
(b)  Associated with the Evergreen merger, the Company assumed convertible notes
     eligible  for  2.3  million  shares  of the  Company's  common  stock  upon
     conversion.
</FN>


NOTE K.     Geographic Operating Segment Information

     The Company has operations in only one industry segment, that being the oil
and  gas  exploration  and  production   industry;   however,   the  Company  is
organizationally structured along geographic operating segments, or regions. The
Company has reportable  operations in the United States,  Argentina,  Canada and
Africa and Other.  Africa and Other is  primarily  comprised  of  operations  in
Equatorial Guinea, Gabon, Nigeria, South Africa and Tunisia.

     The following  tables provide the Company's  interim  geographic  operating
segment  data for the  three-month  periods  ended  March  31,  2005  and  2004.
Geographic  operating  segment  income  tax  benefits   (provisions)  have  been
determined  based on statutory  rates existing in the various tax  jurisdictions
where the Company has oil and gas producing activities. The "Headquarters" table
column  includes  revenues and expenses that are not  routinely  included in the
earnings measures  internally  reported to management on a geographic  operating
segment basis.


                                       22




                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                 March 31, 2005
                                   (Unaudited)



                                         United                            Africa                    Consolidated
                                         States    Argentina    Canada    and Other   Headquarters       Total
                                        --------   ---------   --------   ---------   ------------   ------------
                                                                 (in thousands)
                                                                                   
Three months ended March 31, 2005:
  Revenues and other income:
     Oil and gas revenues............   $403,833    $ 38,030   $ 30,758    $ 47,691     $     -       $ 520,312
     Interest and other..............        -            -          -           -        28,333         28,333
     Gain on disposition of
       assets, net...................      2,032          -          -           -           189          2,221
                                         -------     -------    -------     -------      -------       --------
                                         405,865      38,030     30,758      47,691       28,522        550,866
                                         -------     -------    -------     -------      -------       --------
  Costs and expenses:
     Oil and gas production..........     86,144       8,507     11,544       7,767           -         113,962
     Depletion, depreciation and
       amortization..................    114,446      17,932      9,593       9,377        4,803        156,151
     Impairment of long-lived assets.         -           -          -          152           -             152
     Exploration and abandonments....     39,479       2,584      4,037      21,285           -          67,385
     General and administrative......         -           -          -           -        29,585         29,585
     Accretion of discount on asset
       retirement obligations........         -           -          -           -         2,140          2,140
     Interest........................         -           -          -           -        33,251         33,251
     Other...........................         -           -          -           -        11,720         11,720
                                         -------     -------    -------     -------      -------       --------
                                         240,069      29,023     25,174      38,581       81,499        414,346
                                         -------     -------    -------     -------      -------       --------
  Income (loss) before income taxes..    165,796       9,007      5,584       9,110      (52,977)       136,520
  Income tax benefit (provision).....    (60,516)     (3,152)    (2,108)     (2,060)      15,973        (51,863)
                                         -------     -------    -------     -------      -------       --------
  Net income (loss)..................   $105,280    $  5,855   $  3,476    $  7,050     $(37,004)     $  84,657
                                         =======     =======    =======     =======      =======       ========
Three months ended March 31, 2004:
  Revenues and other income:
     Oil and gas revenues............   $346,309    $ 30,883   $ 18,219    $ 40,116     $    -        $ 435,527
     Interest and other..............         -           -          -           -         1,735          1,735
     Gain (loss) on disposition of
       assets, net...................         51          -          -           -           (64)           (13)
                                         -------     -------    -------     -------      -------       --------
                                         346,360      30,883     18,219      40,116        1,671        437,249
                                         -------     -------    -------     -------      -------       --------
  Costs and expenses:
     Oil and gas production..........     55,020       6,759      7,949       8,484           -          78,212
     Depletion, depreciation and
       amortization..................     97,371      12,542      7,475      16,396        2,715        136,499
     Exploration and abandonments....     53,556       3,550     12,976      10,424           -          80,506
     General and administrative......         -           -          -           -        18,329         18,329
     Accretion of discount on asset
       retirement obligations........         -           -          -           -         1,966          1,966
     Interest........................         -           -          -           -        21,576         21,576
     Other...........................         -           -          -           -           196            196
                                         -------     -------    -------     -------      -------       --------
                                         205,947      22,851     28,400      35,304       44,782        337,284
                                         -------     -------    -------     -------      -------       --------
  Income (loss) before income taxes..    140,413       8,032    (10,181)      4,812      (43,111)        99,965
  Income tax benefit (provision).....    (51,251)     (2,811)     3,843      (1,162)      11,604        (39,777)
                                         -------     -------    -------     -------      -------       --------
  Net income (loss)..................   $ 89,162    $  5,221   $ (6,338)   $  3,650     $(31,507)     $  60,188
                                         =======     =======    =======     =======      =======       ========




                                       23




                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                 March 31, 2005
                                   (Unaudited)


NOTE L.     Volumetric Production Payments

     During  January  2005,  the Company  sold two  percent of its total  proved
reserves,  or 20.5  MMBOE  of  proved  reserves,  by  means  of two VPPs for net
proceeds  of  $592.3   million,   including  the  assignment  of  the  Company's
obligations under certain  derivative hedge  agreements.  Proceeds from the VPPs
were  initially  used to pay down  indebtedness.  The  first  VPP sold 58 Bcf of
Hugoton field gas volumes over an expected five-year term that began in February
2005 for $275.2 million.  The second VPP sold 10.8 MMBbls of oil volumes over an
expected seven-year term beginning in January 2006 for $317.1 million.

     The Company's VPPs represent  limited-term  overriding royalty interests in
oil and gas reserves  which:  (i) entitle the  purchaser  to receive  production
volumes over a period of time from specific lease  interests;  (ii) are free and
clear of all associated future production costs and capital expenditures;  (iii)
are nonrecourse to the Company (i.e.,  the  purchaser's  only recourse is to the
assets  acquired);  (iv)  transfers  title to the  purchaser  and (v) allows the
Company to retain  the assets  after the VPPs  volumetric  quantities  have been
delivered.

     Under  SFAS 19,  a VPP is  considered  a sale of  proved  reserves  and the
related future production of those proved reserves. As a result, the Company (i)
removes the proved  reserves  associated  with the VPPs; (ii) recognizes the VPP
proceeds as deferred  revenue  which will be amortized  on a  unit-of-production
basis to future oil and gas revenues  over the terms of the VPPs;  (iii) retains
responsibility for 100 percent of the production costs and capital costs related
to VPP interests and (iv) no longer  recognizes  production  associated with the
VPP volumes.

     The following table represents the breakdown of the components of the VPPs:


                                                      Hugoton       Spraberry
                                                     Field (Gas)    Field (Oil)       Total
                                                     ----------     ----------     ----------
                                                                  (in thousands)
                                                                          
       VPP proceeds, net of transaction costs....    $  275,163     $  317,123     $  592,286
       Fair value of derivatives conveyed (a)....        12,860         36,759         49,619
                                                      ---------      ---------      ---------
       Deferred revenue..........................       288,023        353,882        641,905
       Less first quarter 2005 amortization......       (11,625)           -          (11,625)
                                                      ---------      ---------      ---------
            Deferred revenue March 31, 2005......    $  276,398     $  353,882     $  630,280
                                                      =========      =========      =========
<FN>
- -----------
(a)  Represents the fair value of the derivative obligations conveyed as part of
     the VPP transaction.  The fair value was deferred in AOCI-Hedging until the
     delivery  of the VPP  volumes  occurs at which  time the fair  value of the
     derivative  obligations  attributable  to the  delivered  volumes  will  be
     recognized as a decrease to oil and gas revenues. See Note F for additional
     discussion regarding the Company's hedge positions.
</FN>


     The  above  deferred  revenue  amounts  will be  recognized  in oil and gas
revenues in the Consolidated  Statements of Operations as noted below,  assuming
the related VPP production volumes are delivered as scheduled (in thousands):

                                                        
              Remaining 2005.........................      $   54,176
              2006...................................         120,219
              2007...................................         115,363
              2008...................................         108,168
              2009...................................         100,381
              2010...................................          44,952
              2011...................................          44,952
              2012...................................          42,069
                                                            ---------
                                                           $  630,280
                                                            =========




                                       24




                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                 March 31, 2005
                                   (Unaudited)


NOTE M.     Business Interruption Insurance Claims

     During  September  2004,  the  Company  sustained  damages  as a result  of
Hurricane Ivan at its Devils Tower and Canyon Express platform facilities in the
deepwater Gulf of Mexico.  The damages  delayed  scheduled well  completions and
interrupted  production  during  the  second  half of 2004 and  during the first
quarter 2005. The Company maintains business interruption insurance coverage for
such circumstances and events and has filed claims with its insurance providers.

     Based on the terms of the  insurance  coverage,  the Company  estimates its
losses since the occurrence and through March 31, 2005 to be approximately $32.4
million.  The Company  recorded  $7.6 million and $24.8 million of the estimated
claims  in the  fourth  quarter  of  2004  and in the  first  quarter  of  2005,
respectively,  in  interest  and  other  income  in the  Company's  Consolidated
Statements of Operations.  In March 2005,  the Company  received a $14.3 million
partial payment from its insurance providers related to its Devils Tower claim.

NOTE N.     Subsequent Events

     VPP transaction.  During April 2005, the Company sold less than one percent
of its total proved reserves, or 7.3 MMBOE of proved reserves, by means of a new
VPP for net proceeds of $300.4  million,  including  the value  attributable  to
certain  derivative  hedge  agreements  assigned  to the buyer of the April VPP.
Proceeds from the April VPP were  initially used to pay down  indebtedness.  The
April VPP sold 6.0 Bcf of Spraberry field gas volumes over an expected  32-month
term beginning in May 2005 and 6.2 MMBbls of Spraberry field oil volumes over an
expected   five-year  term  beginning  in  January  2006.  The  following  table
represents the breakdown of the components of the April VPP:


                                                   Spraberry      Spraberry
                                                   Field (Gas)    Field (Oil)      Total
                                                   ----------     ----------     ----------
                                                                (in thousands)
                                                                        
     VPP proceeds, net of transaction costs....    $   37,613     $  262,790     $  300,403
     Fair value of derivatives conveyed (a)....          (526)       (11,076)       (11,602)
                                                    ---------      ---------      ---------
     Deferred revenue..........................    $   37,087     $  251,714     $  288,801
                                                    =========      =========      =========
<FN>
- -----------
(a)  Represents the fair value of the derivative  agreements conveyed as part of
     the VPP transaction.  The fair value will be deferred in AOCI-Hedging until
     the delivery of the VPP volumes  occurs at which time the fair value of the
     derivative  agreements  attributable  to  the  delivered  volumes  will  be
     recognized as an increase to oil and gas revenues.
</FN>


     The  above  deferred  revenue  amounts  will be  recognized  in oil and gas
revenues in the Consolidated  Statements of Operations as noted below,  assuming
the  related  April VPP  production  volumes  are  delivered  as  scheduled  (in
thousands):

                                                       
              Remaining 2005.........................     $   9,973
              2006...................................        70,132
              2007...................................        65,891
              2008...................................        49,986
              2009...................................        47,540
              2010...................................        45,279
                                                           --------
                                                          $ 288,801
                                                           ========


     Asset divestitures. During April 2005, the Company announced the signing of
a definitive  agreement for the sale of three non-strategic  Canadian properties
and completed the sale of certain East Texas  properties for expected  aggregate
sales proceeds of approximately $232 million.



                                       25




                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                 March 31, 2005
                                   (Unaudited)


     Canadian  divestiture.  The Company's Canadian  divestiture includes all of
the Company's  interests in Martin Creek, Conroy Black and Lookout Butte oil and
gas properties for expected proceeds of approximately  $207 million,  subject to
normal closing adjustments. The Canadian divestiture is expected to be completed
during the second quarter of 2005,  although no assurances can be given that the
transaction will be completed as planned.

     East Texas  divestiture.  During  April  2005,  the Company  completed  the
aforementioned  divestiture  of East  Texas  properties  for  approximately  $25
million of net cash proceeds.

     Debt  redemption.  During April 2005,  the Company  redeemed  $32.4 million
principal  amount of its 9-5/8% Notes.  The Company will recognize a pretax loss
on the  redemption of the 9-5/8% Notes of $7.3 million during the second quarter
of 2005.







                                       26




                        PIONEER NATURAL RESOURCES COMPANY



Item 2.     Management's Discussion and Analysis of Financial Condition and
            Results of Operations

Financial and Operating Performance

     During 2005,  the Company  announced the following  significant  events and
initiatives:

     o   Production resumed in  mid-February from Canyon Express after hurricane
         related repairs were completed.
     o   The Company  sold two VPPs  during the  first quarter  of 2005  for net
         proceeds of $592.3 million, including the  assignment of  $49.6 million
         of the Company's derivative hedge obligations.
     o   The Company  sold a  third VPP  during April  2005 for  net proceeds of
         $300.4 million.
     o   During  April 2005,  the Company  announced the signing of a definitive
         agreement for  the sale  of three non-strategic Canadian properties and
         completed  the sale  of certain  East  Texas  properties  for  expected
         aggregate sales proceeds of approximately $232 million.
     o   In Alaska,  the Company acquired a 20 percent interest in approximately
         452,000 additional acres and gained the rights to extensive seismic and
         geologic data in the  National Petroleum Reserve - Alaska (the "NPR-A")
         Northeast  Planning Area.  The Company  also participated  in the NPR-A
         Northwest Planning  Area  lease  sale and  acquired  working  interests
         ranging from 20 percent to 30 percent in approximately 808,000 acres.
     o   The Company acquired 13 blocks,  all in the  deepwater  Gulf of Mexico,
         for $7.5 million.
     o   The Company executed a multi-year service contract with Doyon Drilling,
         Inc. and Akita Drilling, Ltd. who will build and operate a new drilling
         rig designed for  exploration drilling  on the Company's  Alaskan North
         Slope properties.
     o   The Company joined Oranto Petroleum and Orandi Petroleum in an existing
         production sharing contract on  Block 320 in  deepwater Nigeria gaining
         exploration rights from the Nigerian National Petroleum Corporation.
     o   The Company's  board  of  directors  approved a  2005  capital  program
         providing  for  total  capital  expenditures  of  $900  million to $950
         million.
     o   The  board  of  directors  approved  a  new  share  repurchase  program
         authorizing the purchase of up  to $300 million of the Company's common
         stock.
     o   The board of  directors declared a semiannual cash dividend of $.10 per
         share to common  stockholders of  record at  the close  of business  on
         March 31, 2005. The dividend was paid on April 15, 2005.

     The Company's financial and operating  performance for the first quarter of
2005 included the following highlights:

     o   Average  daily sales  volumes,  on a BOE basis,  increased four percent
         during the first quarter of 2005 as  compared  to the  first quarter of
         2004.
     o   Oil and gas revenues  increased 19  percent during the first quarter of
         2005 as  compared  to  the same  period in  2004 as  a  result  of  the
         increased  production  volumes and  increases in  worldwide oil and gas
         prices.
     o   Interest and other income increased  by $26.6 million  during the first
         quarter of 2005 as compared to the first quarter of 2004, primarily due
         to business interruption insurance claims related to Hurricane Ivan.
     o   Income  before income  taxes increased by 37  percent to $136.5 million
         during the first  quarter of 2005 from  $100.0 million during the first
         quarter of 2004.
     o   Net income  increased to $84.7 million ($.58 per diluted share) for the
         first quarter of 2005,  as compared to $60.2  million ($.50 per diluted
         share) for the same period in 2004.
     o   Net cash  provided by  operating activities  increased by 32 percent to
         $334.9 million during the first  quarter of  2005 from  $253.6  million
         during the first quarter of 2004.
     o   Outstanding  debt  decreased by  $554.0 million,  or 23 percent,  as of
         March 31, 2005 as compared to debt outstanding as of December 31, 2004.



                                       27




                        PIONEER NATURAL RESOURCES COMPANY



Volumetric Production Payments

     During  January  2005,  the Company  sold two  percent of its total  proved
reserves,  or 20.5  MMBOE  of  proved  reserves,  by  means  of two VPPs for net
proceeds  of  $592.3   million,   including  the  assignment  of  the  Company's
obligations under certain  derivative hedge  agreements.  Proceeds from the VPPs
were  initially  used to pay down  indebtedness.  The  first  VPP sold 58 Bcf of
Hugoton field gas volumes over an expected  five-year term beginning in February
2005 for $275.2 million.  The second VPP sold 10.8 MMBbls of Spraberry field oil
volumes over an expected  seven-year  term  beginning in January 2006 for $317.1
million.

     During  April  2005,  the  Company  sold less than one percent of its total
proved reserves,  or 7.3 MMBOE of proved  reserves,  by means of another VPP for
net proceeds of $300.4 million,  including the value of certain derivative hedge
agreements  assigned  to the  buyer  of the  VPP.  Proceeds  from  the VPP  were
initially used to pay down indebtedness. The VPP sold 6.0 Bcf of Spraberry field
gas volumes over an expected  32-month term beginning in May 2005 and 6.2 MMBbls
of Spraberry  field oil volumes  over an expected  five-year  term  beginning in
January 2006. See Notes L and N of Notes to  Consolidated  Financial  Statements
included in "Item 1. Financial Statements" for additional  information regarding
the Company's VPPs.

Asset Divestitures

     During  April 2005,  the  Company  announced  the  signing of a  definitive
agreement for the sale of three non- strategic Canadian properties and completed
the sale of certain East Texas properties for expected  aggregate sales proceeds
of approximately $232 million.

     Canadian  divestiture.  The Company's Canadian  divestiture includes all of
the Company's  interests in Martin Creek, Conroy Black and Lookout Butte oil and
gas properties for expected proceeds of approximately  $207 million,  subject to
normal  closing  adjustments.  As of March 1,  2005,  the  Company's  net proved
reserves in these  properties were estimated to be  approximately  9 MMBOE.  The
Company's  current net  production  from the properties  averages  approximately
3,000 BOEPD.  The Canadian  divestiture  is expected to be completed  during the
second quarter of 2005, although no assurances can be given that the transaction
will be completed as planned.

     East Texas  divestiture.  During  April  2005,  the Company  completed  the
aforementioned  divestiture  of East  Texas  properties  for  approximately  $25
million of net cash  proceeds.  As of March 31, 2005,  the  Company's net proved
reserves in these properties were estimated to be  approximately  2.5 MMBOE. The
Company's net production from the properties  averaged  approximately 400 BOEPD.
The net cash  proceeds  from this  divestiture  were used to reduce  outstanding
indebtedness.

Second Quarter 2005 Outlook

     Based on current  estimates,  the Company  expects that second quarter 2005
production  will average  185,000 to 205,000 BOEPD,  including a full quarter of
production  from Canyon  Express,  continued  ramp up of production  from Devils
Tower,  typical variability in the timing of oil cargo shipments in South Africa
and Tunisia and the impact of a full quarter of VPP volumes sold.

     Second quarter production costs (including production and ad valorem taxes)
are  expected  to average  $6.25 to $6.75 per BOE based on current  NYMEX  strip
prices for oil and gas.  DD&A expense is expected to average  $9.10 to $9.60 per
BOE during the second quarter of 2005.

     Total exploration and abandonment  expense is expected to be $50 million to
$70 million and includes carryover costs associated with unsuccessful wells that
were in  progress  at the end of the first  quarter of 2005,  plans to drill two
deepwater  Gulf of Mexico  exploration  wells and the  acquisition of additional
seismic data. General and  administrative  expense is expected to be $27 million
to $29 million.  Interest  expense is expected to be $29 million to $32 million,
and  accretion  of discount on asset  retirement  obligations  is expected to be
approximately $2 million to $3 million.



                                       28




                        PIONEER NATURAL RESOURCES COMPANY


     The Company's  second quarter 2005 effective income tax rate is expected to
range from 36 percent to 39 percent  based on current  capital  spending  plans,
including  cash income taxes of $5 million to $10 million  that are  principally
related to Argentine and Tunisian income taxes and nominal  alternative  minimum
tax in the U.S.  Other than in Argentina and Tunisia,  the Company  continues to
benefit from the  carryforward  of net operating  losses and other  positive tax
attributes.

Acquisition and Drilling Highlights

     During the first quarter of 2005,  the Company  incurred  $285.5 million in
finding  and  development   costs  including   $149.5  million  for  development
activities,  $101.7  million for  exploration  activities  and $34.3  million on
acquisitions.   The  majority  of  the  Company's  development  and  exploration
expenditures   were  spent  on  drilling  wells,   acquiring  seismic  data  and
constructing   infrastructure  for  the  Company's  development  projects.   The
following tables summarize the Company's  development and  exploration/extension
drilling activities for the three months ended March 31, 2005:



                                                          Development Drilling
                               ---------------------------------------------------------------------------
                               Beginning Wells      Wells      Successful    Unsuccessful    Ending Wells
                                 in Progress        Spud         Wells           Wells       In Progress
                               ---------------    ---------    ----------    ------------    ------------
                                                                                     
United States.................        32              101           109              1              23
Argentina.....................         6               22            20              2               6
Canada........................         2               28            25            -                 5
                                  ------           ------        ------         ------          ------

      Total Worldwide.........        40              151           154              3              34
                                  ======           ======        ======         ======          ======



                                                      Exploration/Extension Drilling
                               ---------------------------------------------------------------------------
                               Beginning Wells      Wells      Successful    Unsuccessful    Ending Wells
                                 in Progress        Spud         Wells           Wells       In Progress
                               ---------------    ---------    ----------    ------------    ------------
                                                                                     
United States................          9                6             4              1              10
Argentina....................          8              -               6              1               1
Canada.......................         21               16            22              5              10
Africa.......................          4                3           -                2               5
                                  ------           ------        ------         ------          ------
     Total Worldwide.........         42               25            32              9              26
                                  ======           ======        ======         ======          ======


     Domestic. The Company spent $153.3 million during the first quarter of 2005
on acquisition,  drilling and seismic activities in the Gulf of Mexico,  onshore
Gulf Coast, Permian Basin, Mid-Continent, Rocky Mountain and Alaska areas of the
United States.

       Gulf of Mexico area. In the Gulf of Mexico area, the Company spent $47.8
million of drilling, construction, acquisition and seismic capital during the
first quarter of 2005. In the first quarter the Company was awarded leases on
three Gulf of Mexico deepwater blocks covering approximately 17,000 acres. The
Company was also the high bidder and is currently awaiting Mineral Management
Services approval on ten additional deepwater blocks covering approximately
46,000 acres. The following are updates of four projects in the deepwater Gulf
of Mexico:

o    Canyon Express - Production  from the Canyon Express gas system was shut in
     in early  December 2004 as a result of damage  caused by Hurricane  Ivan to
     the methanol delivery system. In mid-February  2005, repair activities were
     completed  and  production  operations  were  resumed.   Pioneer  maintains
     business  interruption  insurance  on the Canyon  Express  project and as a
     result of the damage caused by Hurricane Ivan, the Company has accrued $9.7
     million in the first quarter for its estimated  claim for production  loss.
     The Company has the  potential  to recover an  additional  amount under its
     business  interruption policy depending on the outcome of the determination
     of the timing of the waiting period under the policy.

o    Falcon Corridor - During the first quarter of 2005,  production  activities
     in the Falcon Corridor occurred as expected. The Raptor well was shut in in
     early March  2005 as the  production  volumes had  declined to a level that



                                       29




                        PIONEER NATURAL RESOURCES COMPANY


     made it difficult to produce without substantially limiting production from
     the Company's Falcon wells. Sidetrack operations are planned for the Raptor
     field  during  the  second  quarter  of 2005 to  further  increase  reserve
     recovery.  The Company drilled an exploration well on the Hellcat prospect,
     a Falcon Corridor satellite prospect, during the first quarter of 2005, but
     the well was determined to be noncommercial.

o    Devils  Tower  Area - The Devils  Tower  facilities  sustained  significant
     damage in mid-September 2004 due to Hurricane Ivan, and production from the
     three wells  producing at that time did not resume until late October 2004.
     A fourth well began  producing  at the end of  November.  The damage to the
     platform rig sustained during Hurricane Ivan delayed completion  activities
     related to the four  additional  wells  previously  drilled to develop  the
     field.  Rig  repairs  took over 120 days,  and  completion  activities  for
     continued field development  began late in January 2005.  Pioneer maintains
     business  interruption  insurance  and has  filed a  claim  related  to (a)
     production  lost from its  productive  wells and (b) four  wells  that were
     expected to be  completed  but were delayed due to the effects of Hurricane
     Ivan. In the first quarter of 2005, the Company  received a partial payment
     of $14.3 million of estimated business interruption recovery related to its
     claim.  In the fourth  quarter of 2004 and the first  quarter of 2005,  the
     Company  recorded  $7.6  million and $15.1  million of  estimated  business
     interruption  recovery,  respectively,  related to its claim.  The  Company
     expects  to have  additional  business  interruption  insurance  recoveries
     related to future periods as a result of losses  associated  with delays in
     completing  certain wells. In addition,  three subsea tie-back wells in the
     Goldfinger  and Triton  satellite  discoveries in the Devils Tower area are
     expected  to be  jointly  tied back to the  Devils  Tower  spar with  first
     production  expected  in late 2005.  Production  is expected to continue to
     increase as the  remaining  wells are completed and certain other wells are
     recompleted to new zones.  The Company holds a 25 percent working  interest
     in each of the above projects.

o    Thunder  Hawk - During  2004,  the  Company  participated  in a  successful
     exploration well on the Dominion- operated Thunder Hawk prospect located in
     Mississippi Canyon Block 734. The well encountered in excess of 300 feet of
     net oil pay in two  high-quality  reservoir zones.  Murphy  Exploration and
     Production  Company  is now the  operator  and has  commenced  drilling  an
     additional  well to further  delineate  the field.  The Company owns a 12.5
     percent working interest in the discovery.

     Onshore Gulf Coast area. In the Onshore Gulf Coast area,  the Company spent
$11.2 million of drilling, construction,  acquisition and seismic capital during
the first quarter of 2005. The Company has focused its drilling  efforts in this
area on the Pawnee field in the Edwards  Reef trend in South Texas.  The Company
plans to drill approximately 12 wells in this area during 2005.

     Permian Basin area.  The Company spent $25.5 million of capital  during the
first  quarter of 2005  primarily on  development  drilling in the Spraberry oil
trend where the Company plans to drill approximately 175 wells during 2005.

     Mid-Continent  area.  The Company spent $7.0 million of capital  during the
first quarter of 2005 primarily in the West  Panhandle  field in Texas where the
Company  plans to drill  approximately  90 wells during  2005.  The Company also
plans to  drill  approximately  20 wells  during  2005 in the  Hugoton  field in
Kansas.

     Rocky  Mountain area. The Company spent $25.2 million of capital during the
first quarter of 2005  primarily on  development  drilling in the Raton Basin in
Colorado.  The Company plans on drilling  approximately 300 wells during 2005 in
the Rocky Mountain area.

     Alaska area. The Company spent $36.6 million of  acquisition,  drilling and
seismic  capital  during the first  quarter of 2005 to drill  wells,  add to its
leasehold position and expand its North Slope seismic data coverage.

     During  the  first  quarter  of 2005,  the  Company  participated  in three
exploration  wells.  Two wells  were  drilled in the NPR-A and the  results  are
currently  being  evaluated.  The third well was drilled on the Tuvaaq  prospect
operated by  Kerr-McGee.  The Tuvaaq well  encountered  wet sands in the primary
Ivishak objective and hydrocarbon-bearing  sands in the Schrader Bluff interval.
The Company  elected to assign its interest in the well to Kerr-McGee in lieu of
payment of its capital  costs  rather than  participate  in the  Schrader  Bluff
interval  due  to  the  Company's  small  working   interest  in  any  potential
development.




                                       30




                        PIONEER NATURAL RESOURCES COMPANY


     Pioneer also holds a 50 percent working interest in a 130,000-acre position
adjacent to and south of the giant Prudhoe Bay and Kuparuk Units, and during the
first quarter of 2005, shot a new 3-D seismic survey over the area.

     International.  The Company's  international  operations are located in the
Neuquen and Austral  Basins areas of  Argentina,  the  Chinchaga,  Martin Creek,
Lookout  Butte and Carbon areas of Canada,  the Sable oil field  offshore  South
Africa and in southern Tunisia.  Additionally, the Company has other development
and  exploration  activities in  Equatorial  Guinea,  Nigeria,  South Africa and
Tunisia.

     Argentina.  The Company  spent $26.1 million of  acquisition,  drilling and
seismic capital during the first quarter of 2005.

     Canada.  The  Company  spent $54.7  million of  acquisition,  drilling  and
seismic capital during the first quarter of 2005, primarily in the Chinchaga and
Carbon areas that are only accessible for drilling during the winter months.

     During  April 2005,  the  Company  announced  the  signing of a  definitive
agreement  for the sale of three non-  strategic  Canadian  properties in Martin
Creek,  Conroy Black and Lookout  Butte for expected  proceeds of  approximately
$207 million, subject to normal closing adjustments. The Canadian divestiture is
expected to be completed  during the second quarter of 2005. See Note N of Notes
to Consolidated Financial Statements included in "Item 1. Financial Statements".

     Africa.  The  Company  spent $51.4  million of  acquisition,  drilling  and
seismic  capital  during the first  quarter  of 2005,  primarily  in  Equatorial
Guinea, Gabon, Nigeria, South Africa and Tunisia.

     Equatorial  Guinea.  The Company  spent $.5 million of seismic and drilling
capital during the first quarter of 2005 in Block H offshore  Equatorial Guinea.
The Company has several  other  prospects on the block that are being  evaluated
for future drilling, one of which is expected to be drilled during 2005.

     Gabon. The Company spent $.5 million of capital during the first quarter of
2005.  In 2004 the Company  drilled  five  exploration  wells,  one of which was
initially  evaluated as successful in extending the planned  development area to
the south.  The remaining four wells were  unsuccessful.  Despite the successful
extension  well,  in October 2004 the Company  canceled the  development  of the
Olowi field due to a substantial  increase in projected  development costs which
resulted in the project not offering  competitive returns. The Company's current
Gabonese  permit was extended to January 2006 to allow more time for the Company
to determine if it has any viable  options to monetize its  investment  prior to
abandoning the project and exiting Gabon.  During the first quarter of 2005, the
Company recognized an additional impairment charge of $.2 million.

     Nigeria.  The Company  spent $43.1  million of  acquisition,  drilling  and
seismic  capital  during the first  quarter of 2005.  The Company  joined Oranto
Petroleum and Orandi  Petroleum in an existing  production  sharing  contract on
Block 320 in  deepwater  Nigeria  gaining  exploration  rights from the Nigerian
National Petroleum Corporation. The 442,000 acre block is located about 90 miles
southeast  of Lagos in water depths  ranging  between  6,900 to 8,900 feet.  The
Company owns a 51 percent working interest and is the technical operator.  Under
terms  of an  existing  production  sharing  contract,  Pioneer  and  the  other
participants will carry out a work program that includes  acquiring a minimum of
1,790  square  kilometers  of  3-D  seismic  data  and  drilling  at  least  one
exploration   well  by  February  of  2007.   The  Company   farmed-in   to  the
Devon-operated  Block  256  during  the first  quarter  and  participated  in an
unsuccessful exploration well.

     South Africa. The Company spent $.3 million of drilling and seismic capital
during the first quarter of 2005.  During 2005, the Company  currently  plans to
spend  approximately  $1 million  in South  Africa  for  production  enhancement
opportunities at Sable.

     Tunisia.  The Company  spent $5.0 million of drilling  and seismic  capital
during the first quarter of 2005 primarily to drill one exploration  well in its
partner-operated  Adam oil field and one  unsuccessful  exploration  well in its
Company-  operated El Hamra permit.  The remaining capital budget for Tunisia in
2005 includes two appraisal wells on the Anaguid permit.



                                       31




                        PIONEER NATURAL RESOURCES COMPANY



Results of Operations

     Oil and gas revenues.  Revenues from oil and gas operations  totaled $520.3
million for the three months ended March 31, 2005 as compared to $435.5  million
for the same period in 2004,  representing  a 19 percent  increase.  The revenue
increase  from 2004 to 2005 was due to a four percent  increase in average daily
BOE sales volumes,  an 18 percent  increase in oil prices, a 21 percent increase
in NGL prices and a 15 percent increase in gas prices,  including the effects of
commodity price hedges.

     The following  table provides  average daily sales  volumes,  by geographic
area and in total, for the three-month periods ended March 31, 2005 and 2004:


                                                    Three months ended
                                                         March 31,
                                                  ----------------------
                                                    2005          2004
                                                  --------      --------
                                                          
   Average daily sales volumes:
      Oil (Bbls)
        United States..........................     28,723        24,971
        Argentina..............................      8,191         8,628
        Canada.................................        230           100
        Africa.................................     11,967        14,034
                                                  --------      --------
        Worldwide..............................     49,111        47,733
                                                  ========      ========
      NGLs (Bbls)
        United States..........................     17,543        20,936
        Argentina..............................      1,572         1,424
        Canada.................................        601         1,046
                                                  --------      --------
        Worldwide..............................     19,716        23,406
                                                  ========      ========
      Gas (Mcf)
        United States..........................    538,285       527,630
        Argentina..............................    130,351        97,818
        Canada.................................     49,546        40,019
                                                  --------      --------
        Worldwide..............................    718,182       665,467
                                                  ========      ========
      Total (BOE)
        United States..........................    135,980       133,845
        Argentina..............................     31,488        26,355
        Canada.................................      9,089         7,816
        Africa.................................     11,967        14,034
                                                  --------      --------
        Worldwide..............................    188,524       182,050
                                                  ========      ========


     Worldwide average daily sales volumes on a BOE basis increased four percent
during the first  quarter of 2005 as compared to the first quarter of 2004. On a
quarter-to-quarter  comparison, average daily BOE sales volumes increased by two
percent in the United  States,  by 19 percent in Argentina  and by 16 percent in
Canada and decreased by 15 percent in Africa.

     The increase in daily sales  volumes in the United  States was  principally
due to  production  from the  properties  acquired  in the  Evergreen  merger on
September  28, 2004 and  production  from the Devils Tower oil field which first
began producing during May 2004,  partially offset by approximately  4,000 BOEPD
of Hugoton  VPP  volumes  sold  during  the first  quarter of 2005 which are not
included in the Company's  reported  sales  volumes,  production  lost at Canyon
Express  associated  with  the   aforementioned   hurricane  damage  and  normal
production declines.

     Canadian  sales  volumes  increased  due to new  production  from  Canadian
properties  acquired in the Evergreen  merger and the influx of production  from
new wells drilled during the winter drilling seasons.

     On a  quarter-to-quarter  comparison,  Argentine  average  daily  BOE sales
volumes  increased as a result of increases  in wells  drilled.  The Company has
continued to increase capital  expenditures in Argentina as the stability of the
Argentine peso and the general economic outlook for Argentina has improved.



                                       32




                        PIONEER NATURAL RESOURCES COMPANY


     The following table provides average reported prices, including the results
of hedging  activities,  and average realized  prices,  excluding the results of
hedging activities, by geographic area and in total, for the three-month periods
ended March 31, 2005 and 2004:


                                                    Three months ended
                                                         March 31,
                                                  ----------------------
                                                    2005          2004
                                                  --------      --------
                                                          
       Average reported prices:
          Oil (per Bbl):
            United States......................   $  28.96      $  26.67
            Argentina..........................   $  31.75      $  27.93
            Canada.............................   $  53.81      $  35.00
            Africa.............................   $  44.28      $  31.41
            Worldwide..........................   $  33.27      $  28.31
          NGLs (per Bbl):
            United States......................   $  26.15      $  21.52
            Argentina..........................   $  30.35      $  29.16
            Canada.............................   $  39.07      $  26.51
            Worldwide..........................   $  26.88      $  22.21
          Gas (per Mcf):
            United States......................   $   5.94      $   5.10
            Argentina..........................   $    .88      $    .58
            Canada.............................   $   6.17      $   4.22
            Worldwide..........................   $   5.04      $   4.38
       Average realized prices:
          Oil (per Bbl):
            United States......................   $  46.08      $  32.72
            Argentina..........................   $  31.75      $  30.67
            Canada.............................   $  53.81      $  35.00
            Africa.............................   $  44.28      $  31.91
            Worldwide..........................   $  43.29      $  32.12
          NGLs (per Bbl):
            United States......................   $  26.15      $  21.52
            Argentina..........................   $  30.35      $  29.16
            Canada.............................   $  39.07      $  26.51
            Worldwide..........................   $  26.88      $  22.21
          Gas (per Mcf):
            United States......................   $   6.10      $   5.32
            Argentina..........................   $    .88      $    .58
            Canada.............................   $   6.19      $   5.21
            Worldwide..........................   $   5.16      $   4.62


     Hedging  activities.  The oil and gas prices that the  Company  reports are
based on the market price received for the  commodities  adjusted by the results
of the Company's cash flow hedging  activities.  The Company utilizes  commodity
swap and collar  contracts in order to (i) reduce the effect of price volatility
on the  commodities the Company  produces and sells,  (ii) support the Company's
annual capital  budgeting and expenditure plans and (iii) reduce commodity price
risk associated with certain capital projects. During the first quarter of 2005,
the  Company's  commodity  price hedges  decreased oil and gas revenues by $52.3
million, as compared to $30.7 million during the same period in 2004. See Note F
of Notes to  Consolidated  Financial  Statements  included in "Item 1. Financial
Statements" for specific information  regarding the Company's hedging activities
during the three-month periods ended March 31, 2005 and 2004.

     Argentina   commodity   prices.   Argentine   commodity  prices  have  been
significantly  below  those in the world  markets  for a period of time.  In May
2004, pursuant to a decree, the Argentine government approved measures to permit
producers to renegotiate gas sales contracts,  excluding those that could affect
small  residential  customers.  Pursuant  to that  decree,  wellhead  prices are
scheduled  to rise from a 2004 year end range of $.61 to $.78 per Mcf to a range
of $.87 to $1.04 per Mcf after July 2005,  depending on the region where the gas
is produced. No further gas price increases beyond July 2005 were allowed for in
the decree. Also, due to the Argentine export tax (expires in February 2007) and
price caps required by the Argentine  government on oil prices paid by Argentine
refiners,  the price of  Argentine  oil has been  below that  realized  in world
markets. For additional information regarding the suppressed Argentine commodity
prices see the  Company's  2004 Form 10-K,  as amended.  At the present time, no




                                       33




                        PIONEER NATURAL RESOURCES COMPANY


specific  predictions  can be made about future  commodity  prices in Argentina.
However,  in the short  term,  the Company  expects  Argentine  commodity  price
realizations to be less than those in the United States.

     Interest and other  income.  Interest and other income for the  three-month
periods  ended  March 31,  2005 and 2004 was  $28.3  million  and $1.7  million,
respectively.  The increase in interest and other income is  attributable to the
recognition  of  $24.8  million  in  business   interruption   insurance  claims
associated  with lost  production  as a result of the damage caused by Hurricane
Ivan to the Devils Tower  facilities  and the Canyon Express  methanol  delivery
system.  See Note M of Notes to Consolidated  Financial  Statements  included in
"Item  1.  Financial  Statements"  for  additional   information  regarding  the
Company's business interruption insurance claims.

     Oil and gas production  costs.  The Company  recorded  production  costs of
$114.0 million and $78.2 million during the three-month  periods ended March 31,
2005 and 2004,  respectively.  In general, lease operating expenses and workover
expenses represent the components of oil and gas production costs over which the
Company has management control,  while production taxes and ad valorem taxes are
directly  related to commodity  price changes.  Total  production  costs per BOE
increased by 42 percent during the three months ended March 31, 2005 as compared
to the same  respective  period in 2004  primarily  due to (i) an increase in ad
valorem taxes,  (ii) additional  workover  activities  performed during Canada's
winter  access  season,  (iii) the  retention of operating  costs related to VPP
volumes sold,  and (iv) new  production  added from the  Evergreen  merger which
represent  higher  operating  cost  properties  than the Company's  other United
States properties.

     The  following  tables  provide  the  components  of  the  Company's  total
production  costs per BOE and total  production costs per BOE by geographic area
for the three-month periods ended March 31, 2005 and 2004:


                                                  Three months ended
                                                        March 31,
                                                  -------     -------
                                                    2005        2004
                                                  -------     -------
                                                        
       Lease operating expense................    $  5.01     $  3.43
       Taxes:
          Ad valorem..........................        .58         .47
          Production..........................        .78         .59
       Workover costs.........................        .35         .23
                                                   ------      ------
          Total production costs..............    $  6.72     $  4.72
                                                   ======      ======




                                                  Three months ended
                                                       March 31,
                                                  -------------------
                                                    2005        2004
                                                  -------     -------
                                                        
       Total production costs:
          United States.......................    $  7.04     $  4.52
          Argentina...........................    $  3.00     $  2.82
          Canada..............................    $ 14.11     $ 11.18
          Africa .............................    $  7.21     $  6.64
          Worldwide...........................    $  6.72     $  4.72


     Depletion,  depreciation and amortization expense. The Company's total DD&A
expense was $9.20 and $8.24 per BOE for the three-month  periods ended March 31,
2005 and 2004,  respectively.  Depletion expense,  the largest component of DD&A
expense,  increased  to $8.92 per BOE for the three months ended March 31, 2005,
as compared to $8.08 during the same respective  period in 2004. The increase in
per BOE  depletion  expense  during the three months  ended March 31,  2005,  as
compared to the same period in 2004, is primarily due to new Rocky Mountain area
production  acquired in the Evergreen merger and a higher depletion rate for the
Hugoton field as a result of the VPP volumes sold.  Additionally,  the Company's
depletion  expense per BOE  increased  in  Argentina  and  declined in Africa on
quarter-to-  quarter  comparisons  due  to net  downward  reserve  revisions  in
Argentina and upward reserve revisions in South Africa and Tunisia during 2004.



                                       34




                        PIONEER NATURAL RESOURCES COMPANY

     The following table provides  depletion  expense per BOE by geographic area
for the three-month periods ended March 31, 2005 and 2004:


                                                  Three months ended
                                                       March 31,
                                                  -------------------
                                                    2005        2004
                                                  -------     -------
                                                        
       Depletion expense:
          United States.........................  $  9.35     $  7.99
          Argentina.............................  $  6.33     $  5.23
          Canada................................  $ 11.73     $ 10.51
          Africa ...............................  $  8.71     $ 12.84
          Worldwide.............................  $  8.92     $  8.08


     Exploration,  abandonments,  geological and geophysical costs. Exploration,
abandonments,  geological  and  geophysical  costs were $67.4 million during the
three months ended March 31, 2005, as compared to $80.5 million  during the same
period of 2004.  The  following  table  provides the  Company's  geological  and
geophysical  costs,  exploratory dry hole expense,  lease abandonments and other
exploration  expense by geographic area for the three-month  periods ended March
31, 2005 and 2004:


                                                                                   Africa
                                                United                               and
                                                States     Argentina    Canada      Other       Total
                                                -------    ---------    -------    -------    ---------
                                                                    (in thousands)
                                                                               
     Three months ended March 31, 2005:
       Geological and geophysical............   $25,722     $ 1,675     $   986    $ 9,410    $ 37,793
       Exploratory dry holes.................    11,516         889       2,865     11,556      26,826
       Leasehold abandonments and other......     2,241          20         186        319       2,766
                                                 ------      ------      ------     ------     -------
                                                $39,479     $ 2,584     $ 4,037    $21,285    $ 67,385
                                                 ======      ======      ======     ======     =======
     Three months ended March 31, 2004:
       Geological and geophysical............   $15,769     $ 3,130     $ 1,147    $ 1,733    $ 21,779
       Exploratory dry holes.................    36,968         405       8,170      8,684      54,227
       Leasehold abandonments and other......       819          15       3,659          7       4,500
                                                 ------      ------      ------     ------     -------
                                                $53,556     $ 3,550     $12,976    $10,424    $ 80,506
                                                 ======      ======      ======     ======     =======

     The decrease in exploration, abandonments, geological and geophysical costs
during the first  quarter of 2005,  as compared to the first quarter of 2004, is
primarily comprised of a $27.4 million decrease in dry hole expense, offset by a
$16.0  million  increase in  geological  and  geophysical  expense.  Significant
components of the  Company's  dry hole expense  during the first quarter of 2005
included  $9.1 million  associated  with an  unsuccessful  Nigerian  well,  $9.0
million associated with an unsuccessful well testing a satellite prospect in the
Falcon  Corridor and $2.4 million on an  unsuccessful  well on the  Company's El
Hamra  permit in  Tunisia.  During the first three  months of 2005,  the Company
drilled  and  evaluated  41  exploration/extension   wells,  32  of  which  were
successfully  completed  as  discoveries.  During the same  period in 2004,  the
Company drilled and evaluated 52  exploration/extension  wells, 26 of which were
successfully completed as discoveries.

     General and administrative expense.  General and administrative expense for
the  three-month  periods  ended March 31,  2005 and 2004 was $29.6  million and
$18.3 million,  respectively. The increase in general and administrative expense
was  primarily  due  to  increases  in  administrative  staff,  including  staff
increases   associated  with  the  Evergreen  merger,  and   performance-related
compensation  costs including the  amortization  of restricted  stock awarded to
officers,  directors and  employees  during the quarter ended March 31, 2005, as
compared to the same period of 2004.

     Accretion  of  discount  on  asset  retirement   obligations.   During  the
three-month  periods  ended  March 31, 2005 and 2004,  accretion  of discount on
asset  retirement  obligations was $2.1 million and $2.0 million,  respectively.
The  increase  in  accretion  of  discount on asset  retirement  obligations  is
primarily  due to the increase in future  plugging and  abandonment  obligations
related to new wells in the deepwater  Gulf of Mexico,  Tunisia and South Africa
and  accretion  of discount on asset  retirement  obligations  assumed  with the
Evergreen  merger.  See  Note G of Notes to  Consolidated  Financial  Statements
included in "Item 1. Financial Statements" for additional  information regarding
the Company's asset retirement obligations.

                                       35




                        PIONEER NATURAL RESOURCES COMPANY


     Interest  expense.  Interest  expense was $33.3 for the three  months ended
March 31, 2005, as compared to $21.6  million for the same periods in 2004.  The
weighted  average  interest  rates on the Company's  indebtedness  for the three
months ended March 31, 2005 was 6.0 percent,  as compared to 5.3 percent for the
same  period  in  2004,   taking  into  account  the  effect  of  interest  rate
derivatives.  The  increase in  interest  expense  was  primarily  due to a $5.2
million  decrease  in  interest  rate hedge  gains,  a $.9  million  decrease in
capitalized  interest as the Company completed its major development projects in
the Gulf of Mexico and South Africa,  increased  borrowings  under the Company's
lines  of  credit,  primarily  as a  result  of the  Evergreen  merger,  and the
assumption of $300 million of notes in connection with the Evergreen merger.

     Other expenses.  Other expenses for the three-month periods ended March 31,
2005 and 2004 were $11.7 million and $.2 million,  respectively. The increase in
other  expenses is primarily  attributable  to a $6.8 million  increase in hedge
ineffectiveness, a $2.8 million increase in legal and environmental accruals and
$.8 million of non-compete agreement amortization  associated with the Evergreen
merger.

     Income tax  provision.  During the three months  ended March 31, 2005,  the
Company recognized income tax provisions of $51.9 million,  as compared to $39.8
million  for the same  period  in 2004.  The  Company's  first  quarter  of 2005
effective  tax rate of 38.0  percent is higher than the combined  United  States
federal and state statutory rate of approximately  36.5 percent primarily due to
foreign tax rates,  statutes  that  differ  from those in the United  States and
expenses  for  unsuccessful  well costs in foreign  locations  where the Company
receives no expected income tax benefits.

Capital Commitments, Capital Resources and Liquidity

     Capital  commitments.   The  Company's  primary  needs  for  cash  are  for
exploration,  development and acquisitions of oil and gas properties,  repayment
of  contractual  obligations  and  working  capital  obligations.   Funding  for
exploration,  development  and  acquisitions  of  oil  and  gas  properties  and
repayment  of  contractual  obligations  may be provided by any  combination  of
internally-generated  cash flow,  proceeds from the disposition of non-strategic
assets or  alternative  financing  sources as discussed  in "Capital  resources"
below.  Generally,  funding for the Company's  working  capital  obligations  is
provided by internally-generated cash flow.

     Oil and gas properties.  The Company's cash  expenditures  for additions to
oil and gas properties  during the three- month periods ended March 31, 2005 and
2004 totaled $226.2 million and $167.2 million,  respectively.  The expenditures
for additions to oil and gas properties were internally funded by $334.9 million
and $253.6 million, respectively, of net cash provided by operating activities.

     Contractual  obligations,  including  off-balance  sheet  obligations.  The
Company's  contractual  obligations  include  long-term debt,  operating leases,
drilling  commitments,   derivative  obligations,   other  liabilities  and  VPP
obligations.  From  time-to-time,  the  Company  enters into  off-balance  sheet
arrangements and transactions  that can give rise to material  off-balance sheet
obligations of the Company. As of March 31, 2005, the material off-balance sheet
arrangements  and  transactions  that the Company has entered  into  include (i)
$54.7 million of undrawn  letters of credit,  (ii) operating  lease  agreements,
(iii) drilling commitments,  (iv) VPP obligations (to physically deliver volumes
and pay related costs in the future) and (v)  contractual  obligations for which
the  ultimate  settlement  amounts  are  not  fixed  and  determinable  such  as
derivative  contracts that are sensitive to future  changes in commodity  prices
and gas  transportation  commitments.  Since  December  31,  2004,  the material
changes in the Company's  contractual  obligations were changes in the Company's
derivative  obligations and the aforementioned  sale of VPPs. There have been no
other material changes in the Company's  contractual  obligations since December
31, 2004. See "Item 3.  Quantitative  and Qualitative  Disclosures  About Market
Risk" for a table of changes in the fair value of the Company's open  derivative
contract liabilities during the three months ended March 31, 2005.

     Capital  resources.  The Company's  primary capital  resources are net cash
provided  by  operating  activities,  proceeds  from  financing  activities  and
proceeds  from sales of  non-strategic  assets.  The Company  expects that these
resources  will be  sufficient  to  fund  its  capital  commitments  during  the
remainder of 2005.


                                       36




                        PIONEER NATURAL RESOURCES COMPANY


     Operating activities.  Net cash provided by operating activities during the
three-month periods ended March 31, 2005 and 2004 were $334.9 million and $253.6
million, respectively. The increase in net cash provided by operating activities
was primarily due to increased production volumes and higher commodity prices.

     Investing activities.  Net cash provided by investing activities during the
three  months  ended March 31,  2005 was $361.9  million as compared to net cash
used in investing activities of $172.3 million during the same respective period
in 2004. The increase in net cash provided by investing activities was primarily
due to the $592.3 million of net proceeds from VPPs.

     As  previously  discussed,  the  Company  received  $300.4  million  of net
proceeds from a third VPP transaction  completed  during April 2005. See Notes L
and N of  Notes  to  Consolidated  Financial  Statements  included  in  "Item 1.
Financial   Statements"  for  more  information   regarding  the  Company's  VPP
transactions completed during 2005.

     Financing  activities.  Net cash used in  financing  activities  during the
three  months  ended  March 31,  2005 was $688.2  million,  as compared to $91.4
million  during the same period in 2004. The Company had net repayments on long-
term debt of $553.0 million, as compared to $90.0 million during the same period
in 2004.

     During  February  2005,  the  Company's  board  of  directors   declared  a
semiannual  dividend  of $.10 per common  share,  payable  on April 15,  2005 to
shareholders  of record on March 31,  2005.  Associated  therewith,  the Company
distributed  $14.7  million  of  aggregate  dividends  during  April  2005.  The
Company's  board of  directors  may change the  current  dividend  amount in the
future if warranted by future liquidity and capital resource attributes.

     During April 2005, $131.0 million of the Company's 8-7/8% Notes matured and
were repaid.  The Company also redeemed  $32.4 million  principal  amount of its
9-5/8% Notes.  The Company will recognize a pretax loss on the redemption of the
9-5/8%  Notes of $7.3  million  during the second  quarter of 2005.  The Company
utilized unused  borrowing  capacity under its 364-Day Credit  Agreement to fund
these financing activities.

     During the three months ended March 31, 2005, the Company  expended  $151.9
million to acquire 3.7 million  shares of treasury  stock.  During January 2005,
the Company's board of directors approved a share repurchase program authorizing
the purchase of $300 million of the  Company's  common  stock.  Based on current
expectations,  the  Company  intends  to expend  the  remaining  $148.1  million
authorized under the share repurchase program during the remainder of 2005.

     As the Company  pursues its  strategy,  it may  utilize  various  financing
sources,  including  fixed  and  floating  rate  debt,  convertible  securities,
preferred  stock or common  stock.  The  Company  may also issue  securities  in
exchange for oil and gas  properties,  stock or other interests in other oil and
gas  companies  or  related  assets.  Additional  securities  may be of a  class
preferred  to common  stock  with  respect  to such  matters  as  dividends  and
liquidation  rights and may also have other rights and preferences as determined
by the Company's board of directors.

     Liquidity.  The Company's  principal source of short-term  liquidity is its
revolving  lines of  credit.  Outstanding  borrowings  under the lines of credit
totaled $275 million as of March 31, 2005.  Including  $49.3  million of undrawn
and  outstanding  letters of credit  under the lines of credit,  the Company had
$1.0 billion of unused borrowing capacity as of March 31, 2005.

     During  April 2005,  the Company  reduced  the loan  commitments  under the
364-Day  Credit  Agreement by $200 million to $450  million,  which  reduces the
Company's total borrowing capacity under its lines of credit to $1.15 billion.

     Book capitalization and current ratio. The Company's book capitalization at
March  31,  2005  was  $4.3  billion,  consisting  of debt of $1.8  billion  and
stockholders' equity of $2.5 billion.  Consequently,  the Company's debt to book
capitalization  decreased  to 42  percent  at March 31,  2005 from 46 percent at
December 31, 2004. The Company's ratio of current assets to current  liabilities
was .53 to 1.00 at March 31, 2005 as  compared  to .72 to 1.00 at  December  31,
2004.  The  decline  in  the  Company's  ratio  of  current  assets  to  current
liabilities was primarily due to increases in its current derivative liabilities
as a result of higher  commodity  prices and in current  deferred  revenues as a
result of the VPPs.



                                       37




                        PIONEER NATURAL RESOURCES COMPANY



Item 3.     Quantitative and Qualitative Disclosures About Market Risk

     The following  quantitative and qualitative  disclosures  about market risk
are  supplementary to the quantitative and qualitative  disclosures  provided in
the Company's  Annual Report on Form 10-K for the year ended  December 31, 2004.
As such, the information contained herein should be read in conjunction with the
related disclosures in the Company's Annual Report on Form 10-K, as amended, for
the year ended December 31, 2004.

     Although certain derivative  contracts that the Company has been a party to
did not qualify as hedges,  the Company does not enter into  derivative or other
financial instruments for trading purposes.

     The following table reconciles the changes that occurred in the fair values
of the Company's open derivative contracts during the first quarter of 2005:


                                                    Derivative Contract Net Liabilities
                                                  ---------------------------------------
                                                                  Interest
                                                  Commodities       Rate          Total
                                                  -----------     --------     ----------
                                                               (in thousands)
                                                                      
     Fair value of contracts outstanding
        as of December 31, 2004...............    $ (406,546)     $    -       $ (406,546)
     Changes in contract fair values (a)......      (516,615)       (1,563)      (518,178)
     Contract maturities......................        55,899           -           55,899
     Contract terminations....................        48,057         1,563         49,620
                                                   ---------       -------      ---------
     Fair value of contracts outstanding
        as of March 31, 2005..................    $ (819,205)     $    -       $ (819,205)
                                                   =========       =======      =========
<FN>
- ---------------
(a)  At inception,  new derivative contracts entered into by the Company have no
     intrinsic value.
</FN>


     Interest rate sensitivity.  The following table provides  information about
other financial  instruments the Company was a party to as of March 31, 2005 and
that are sensitive to changes in interest rates. For debt obligations, the table
presents  maturities by expected  maturity dates,  the weighted average interest
rates expected to be paid on the debt given current contractual terms and market
conditions  and the debt's  estimated  fair  value.  For fixed  rate  debt,  the
weighted average  interest rate represents the contractual  fixed rates that the
Company was obligated to periodically  pay on the debt as of March 31, 2005. For
variable rate debt, the average interest rate represents the average rates being
paid on the debt projected forward  proportionate to the forward yield curve for
LIBOR on May 3, 2005.

                            Interest Rate Sensitivity
   Debt Obligations and Derivative Financial Instruments as of March 31, 2005



                               Nine months                                                                        Liability
                                 ending                     Year ending December 31,                            Fair Value at
                               December 31,  -----------------------------------------------------                March 31,
                                   2005        2006      2007       2008       2009     Thereafter     Total         2005
                               -----------   -------   --------   --------   --------   ----------   ---------   -----------
                                                            (in thousands, except interest rates)
                                                                                         
Total Debt:
 Fixed rate principal
  maturities (a)..............  $130,950     $   -     $ 32,075   $350,000   $   -     $1,151,579   $1,664,604   $(1,823,784)
  Weighted average
   interest rate (%)..........      6.28        6.40       6.39       7.04      7.04         7.04
 Variable rate maturities.....  $    -       $   -     $    -     $275,000   $   -     $      -     $  275,000   $  (275,000)
   Average interest rate (%)..      3.73        4.25       4.44       4.57       -            -
<FN>
- -------------
(a)  Represents  maturities  of principal  amounts  excluding  (i) debt issuance
     discounts and premiums and (ii) deferred fair value hedge gains and losses.
</FN>





                                       38




                        PIONEER NATURAL RESOURCES COMPANY



     Commodity price sensitivity. The following tables provide information about
the Company's oil and gas derivative  financial  instruments that were sensitive
to changes in oil or gas prices as of March 31, 2005. As of March 31, 2005,  all
of the  Company's  oil and gas  derivative  financial  instruments  qualified as
hedges.

     See Note F of Notes to Consolidated  Financial Statements included in "Item
1. Financial  Statements" for  information  regarding the terms of the Company's
derivative  financial  instruments  that are sensitive to changes in oil and gas
prices.

                              Oil Price Sensitivity
              Derivative Financial Instruments as of March 31, 2005


                                       Nine months                                                          Liability
                                         ending                    Year ending December 31,               Fair Value at
                                      December 31,  ----------------------------------------------------    March 31,
                                          2005        2006       2007       2008       2009       2010        2005
                                      -----------   --------   --------   --------   --------   --------   -----------
                                                                                                          (in thousands)
                                                                                      
Oil Hedge Derivatives (a):
 Average daily notional Bbl volumes:
  Swap contracts (b)................     27,000       11,973     13,000     20,278      1,643      1,643   $(506,128)
   Weighted average fixed price
    per Bbl.........................   $  27.97     $  35.43   $  30.89   $  32.46   $  47.25   $  46.40
  Collar contracts..................        -          3,500        -          -          -          -     $ (17,229)
   Weighted average ceiling price
    per Bbl.........................   $    -       $  41.95   $    -     $    -     $    -     $    -
   Weighted average floor price
    per Bbl.........................   $    -       $  35.00   $    -     $    -     $    -     $    -
 Average forward NYMEX oil
    prices (c)......................   $  52.82     $  53.40   $  51.80   $  49.59   $  48.74   $  48.14
<FN>
- ---------------
(a)  See Note F of Notes to Consolidated  Financial Statements included in "Item
     1. Financial  Statements" for hedge volumes and weighted  average prices by
     calendar quarter.
(b)  Subsequent to March 31, 2005, the Company  conveyed to the purchaser of its
     April VPP the  following  oil swap  contracts  which were  included  in the
     schedule  above:  (i) 1,973  Bbls per day of 2006 oil  sales at a  weighted
     average fixed price per Bbl of $54.40,  (ii) 3,278 Bbls per day of 2008 oil
     sales at a weighted average fixed price per Bbl of $49.28, (iii) 1,643 Bbls
     per day of 2009 oil  sales at a  weighted  average  fixed  price per Bbl of
     $47.25 and (iv) 1,643 Bbls per day of 2010 oil sales at a weighted  average
     fixed price per Bbl of $46.40.
(c)  The  average  forward  NYMEX oil  prices  are  based on May 3, 2005  market
     quotes.
</FN>



                                       39




                        PIONEER NATURAL RESOURCES COMPANY



                              Gas Price Sensitivity
              Derivative Financial Instruments as of March 31, 2005



                                               Nine months                                          Liability
                                                  ending          Year ending December 31,        Fair Value at
                                               December 31,   --------------------------------      March 31,
                                                   2005         2006        2007        2008          2005
                                               -----------    --------    --------    --------    -------------
                                                                                                  (in thousands)
                                                                                    
Gas Hedge Derivatives (a):
  Average daily notional MMBtu volumes (b):
   Swap contracts (c)........................     278,873       80,000      35,000       5,000     $(292,303)
    Weighted average fixed price per MMBtu...    $   5.22     $   4.50    $   4.63    $   5.38
   Collar contracts..........................         -         17,329         -           -       $  (3,545)
    Weighted average ceiling price
      per MMBtu..............................    $    -       $   9.14    $    -      $    -
    Weighted average floor price
      per MMBtu..............................    $    -       $   6.67    $    -      $    -
  Average forward NYMEX gas prices (d).......    $   7.05     $   7.22    $   6.82    $   6.41
<FN>
- ---------------
(a)  To minimize  basis risk,  the Company enters into basis swaps for a portion
     of its gas hedges to connect the index price of the hedging instrument from
     a NYMEX index to an index which reflects the geographic area of production.
     The Company  considers these basis swaps as part of the associated swap and
     collar contracts and, accordingly, the effects of the basis swaps have been
     presented together with the associated contracts.
(b)  See Note F of Notes to Consolidated  Financial Statements included in "Item
     1. Financial  Statements" for hedge volumes and weighted  average prices by
     calendar quarter.
(c)  Subsequent to March 31, 2005, the Company  conveyed to the purchaser of its
     April VPP the  following  gas swap  contracts  which were  included  in the
     schedule  above:  (i) 5,841  MMBtu per day of 2005 gas sales at a  weighted
     average  fixed  price per MMBtu of $7.14,  (ii) 6,158 MMBtu per day of 2006
     gas sales at a weighted  average  fixed  price per MMBtu of $6.90 and (iii)
     5,805 MMBtu per day of 2007 gas sales at a weighted average fixed price per
     MMBtu of $6.35.
(d)  The  average  forward  NYMEX gas  prices  are  based on May 3, 2005  market
     quotes.
</FN>


Item 4.     Controls and Procedures

     Evaluation of disclosure  controls and procedures.  The Company's principal
executive officer and principal financial officer have evaluated, as required by
Rule 13a-15(b) under the Securities  Exchange Act of 1934 (the "Exchange  Act"),
the Company's  disclosure  controls and  procedures  (as defined in Exchange Act
Rule 13a-15(e)) as of the end of the period covered by this quarterly  report on
Form  10-Q.  Based on that  evaluation,  the  principal  executive  officer  and
principal  financial  officer  concluded  that the design and  operation  of the
Company's  disclosure  controls and  procedures  are  effective in ensuring that
information required to be disclosed by the Company in the reports that it files
or  submits  under the  Exchange  Act is  recorded,  processed,  summarized  and
reported within the time periods specified in the SEC's rules and forms.

     Changes in internal  control over financial  reporting.  There have been no
changes in the Company's  internal control over financial  reporting (as defined
in Rule  13a-15(f)  under the Exchange Act) that  occurred  during the Company's
last fiscal quarter that have  materially  affected or are reasonably  likely to
materially affect the Company's internal control over financial reporting.



                                       40




                        PIONEER NATURAL RESOURCES COMPANY



                           PART II. OTHER INFORMATION

Item 1.     Legal Proceedings

     The  Company is party to various  legal  proceedings,  which are  described
under "Legal  actions" in Note I of Notes to Consolidated  Financial  Statements
included in "Item 1. Financial  Statements".  The Company is also party to other
litigation  incidental  to its business.  Except for the specific  legal actions
described in Note I of Notes to Consolidated  Financial  Statements  included in
"Item 1. Financial  Statements",  the Company believes that the probable damages
from such  other  legal  actions  will not be in excess  of ten  percent  of the
Company's current assets.

Item 2.     Unregistered Sales of Equity Securities and Use of Proceeds

Purchases of Equity Securities by the Issuer and Affiliated Purchasers

     The following  table  summarizes the Company's  purchases of treasury stock
during the three months ended March 31, 2005:


                                                                        Total Number of Shares
                                                                         (or Units) Purchased
                               Total Number of       Average Price        as Part of Publicly
                               Shares (or Units)     Paid per Share         Announced Plans
      Period                       Purchased           (or Unit)              or Programs
      ------                   -----------------     --------------     ----------------------
                                                                
January 2005................           75,000          $   38.177                 75,000
February 2005...............        2,214,700          $   39.141              2,214,700
March 2005..................        1,450,400          $   42.979              1,450,400
                                 ------------                                ------------
        Total...............        3,740,100          $   40.610              3,740,100
                                 ============                                ============


     During  January  2005,  the Company's  board of directors  approved a share
repurchase  program  authorizing  the  purchase  of up to  $300  million  of the
Company's common stock.



                                       41




                        PIONEER NATURAL RESOURCES COMPANY

Item 6.     Exhibits

Exhibits

10.1      Production Payment Purchase and Sale Agreement dated as of January 26,
          2005  among  the  Company, as  the  Seller,  and  Royalty  Acquisition
          Company,  LLC, as the Buyer (related to Hugoton gas) (incorporated  by
          reference to exhibit 99.2 to the Company's current report on Form 8-K,
          File No. 1-13245,  filed with the SEC on February 1, 2005).
10.2      Production Payment Purchase and Sale Agreement dated as of January 26,
          2005  among  the  Company,  as  the  Seller,  and  Royalty Acquisition
          Company, LLC, as the Buyer (related to Spraberry oil) (incorporated by
          reference to  exhibit  99.3 to  the Company's   current report on Form
          8-K, File No. 1-13245, filed with the SEC on February 1, 2005).
10.3      Second  Amendment  to  5-Year  Revolving  Credit Agreement dated as of
          January 21, 2005 among the Company,  as the  Borrower;  JPMorgan Chase
          Bank as the  Administrative  Agent;  JPMorgan Chase  Bank and  Bank of
          America,  N.A.,  as  the  Issuing  Banks;   Wachovia   Bank,  National
          Association  as the  Syndication Agent;  Bank of America,  N.A.,  Bank
          One,  N.A.,  Fleet  National  Bank  and  Wells  Fargo  Bank,  National
          Association,  as the  Co-Documentation  Agents; J.P. Morgan Securities
          Inc. and Wachovia Capital Markets, LLC, as  the Co-Arrangers and Joint
          Bookrunners;  and certain other  lenders (incorporated by reference to
          exhibit 99.1 to the  Company's  current  report on  Form 8-K, File No.
          1-13245, filed with the SEC on January 27, 2005).
10.4      First  Amendment to 364-Day Credit  Agreement  dated as of January 21,
          2005 among the Company, as the Borrower; JPMorgan  Chase Bank  as  the
          Administrative Agent;  Bank of America, N.A., Barclays Bank PLC, Wells
          Fargo  Bank,  National   Association  and   Wachovia  Bank,   National
          Association as the Co-Documentation  Agents;  J.P.  Morgan  Securities
          Inc.  as the  Lead  Arranger  and Sole  Bookrunner;  and certain other
          lenders  (incorporated by reference to  exhibit 99.2 to the  Company's
          current  report on Form 8-K,  File No. 1-13245, filed  with the SEC on
          January 27, 2005).
10.5G     Fourth Amendment to the Company's Long-Term Incentive Plan,  effective
          as of November 20, 2003.
10.6G     Fifth Amendment  to the Company's  Long-Term Incentive Plan, effective
          as of May 12, 2004.
10.7G     Sixth Amendment  to the  Company's Long-Term Incentive Plan, effective
          as of December 17, 2004.
10.8G     Third Amendment  to the Company's  Employee Stock Purchase Plan, dated
          August 21, 2000.
10.9G     Fourth Amendment  to the Company's Employee Stock Purchase Plan, dated
          February 19, 2003.
10.10G    First Amendment to the Company's Pioneer  Natural Resources  USA, Inc.
          40l(k) and Matching Plan (Amended and Restated Effective as of January
          1, 2002), effective January 10, 2003.
10.11G    Second Amendment to the  Company's Pioneer Natural Resources USA, Inc.
          40l(k) and Matching Plan (Amended and Restated Effective as of January
          1, 2002), effective April 16, 2003.
10.12G    Third Amendment to the Company's  Pioneer Natural Resources  USA, Inc.
          40l(k) and Matching Plan (Amended and Restated Effective as of January
          1, 2002), effective June 16, 2003.
10.13G    Fourth Amendment  to the Company's Pioneer Natural Resources USA, Inc.
          40l(k) and Matching Plan (Amended and Restated Effective as of January
          1, 2002), effective December 24, 2003.
10.14G    Fifth Amendment  to the  Company's Pioneer Natural Resources USA, Inc.
          40l(k) and Matching Plan (Amended and Restated Effective as of January
          1, 2002), effective September 28, 2004.
10.15G    The Company's Executive Deferred Compensation Retirement Plan, Amended
          and Restated Effective as of August 1, 2002.
10.16     Production Payment  Purchase and Sale  Agreement dated as of April 19,
          2005 among the Company, as the Seller, and Wolfcamp Oil and Gas Trust,
          as  the  Buyer  (incorporated  by  reference  to  Exhibit 99.2  to the
          Company's Current Report on Form 8-K, File No. 1-13245, filed with the
          SEC on April 21, 2005).
10.17G    Form of  Omnibus Nonstatutory Stock  Option Agreement for Non-employee
          Directors.
10.18(a)  Purchase and Sale  Agreement dated as of  April 28, 2005 among Pioneer
          Natural Resources  Canada Inc.,  as  the Vendor,  and Ketch  Resources
          Ltd., as the Purchaser.
10.19G    Form of Restricted Stock Award Agreement.
10.20G    Form of Omnibus  Nonstatutory Stock Option  Agreement for Option Award
          Participants (Group 1).
10.21G    Offer of Employment Letter dated as of April 8, 2005 among the Company
          and Mark S. Berg.
31.1(a)   Chief Executive Officer  certification under  Section 302 of Sarbanes-
          Oxley Act of 2002.
31.2(a)   Chief Financial  Officer certification under Section 302  of Sarbanes-
          Oxley Act of 2002.
32.1(b)   Chief Executive Officer certification  under Section 906 of  Sarbanes-
          Oxley Act of 2002.
32.2(b)   Chief  Financial Officer certification under  Section 906 of Sarbanes-
          Oxley Act of 2002.
- ---------------
(a) Filed herewith.
(b) Furnished herewith.

G Executive Compensation Plan or Arrangement filed herewith pursuant to Item
14(c).

                                       42




                        PIONEER NATURAL RESOURCES COMPANY





                                   SIGNATURES

Pursuant  to the  requirements  of the  Securities  Exchange  Act of  1934,  the
Registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned hereto duly authorized.

                                             PIONEER NATURAL RESOURCES COMPANY



Date:  May 6, 2005                      By:     /s/ Richard P. Dealy
                                             ----------------------------------
                                             Richard P. Dealy
                                             Executive Vice President and Chief
                                             Financial Officer



Date:  May 6, 2005                      By:     /s/ Darin G. Holderness
                                             ----------------------------------
                                             Darin G. Holderness
                                             Vice President and Chief
                                             Accounting Officer





                                       43




                        PIONEER NATURAL RESOURCES COMPANY
Exhibit Index

10.1      Production Payment Purchase and Sale Agreement dated as of January 26,
          2005 among  the  Company,  as  the  Seller,  and  Royalty  Acquisition
          Company,  LLC,  as the Buyer (related to Hugoton gas) (incorporated by
          reference to exhibit 99.2 to the Company's current report on Form 8-K,
          File No. 1- 13245, filed with the SEC on February 1, 2005).
10.2      Production Payment Purchase and Sale Agreement dated as of January 26,
          2005  among  the Company,  as  the  Seller,  and  Royalty  Acquisition
          Company, LLC, as the Buyer (related to Spraberry oil) (incorporated by
          reference to exhibit 99.3 to the Company's current report on Form 8-K,
          File No. 1- 13245, filed with the SEC on February 1, 2005).
10.3      Second  Amendment to  5-Year Revolving  Credit  Agreement  dated as of
          January 21, 2005  among the Company,  as the Borrower;  JPMorgan Chase
          Bank as the  Administrative  Agent;  JPMorgan  Chase  Bank and Bank of
          America,   N.A.,  as  the  Issuing   Banks;  Wachovia  Bank,  National
          Association as the Syndication Agent; Bank of America, N.A., Bank One,
          N.A., Fleet National Bank and Wells Fargo Bank,  National Association,
          as the  Co-Documentation  Agents;  J.P.  Morgan  Securities  Inc.  and
          Wachovia  Capital  Markets,   LLC,  as  the  Co-Arrangers  and   Joint
          Bookrunners;  and certain other lenders (incorporated  by reference to
          exhibit 99.1 to the Company's current report on Form 8-K,  File No. 1-
          13245, filed with the SEC on January 27, 2005).
10.4      First Amendment  to 364-Day  Credit Agreement dated as of  January 21,
          2005 among the Company,  as the Borrower;  JPMorgan Chase Bank  as the
          Administrative Agent; Bank of America, N.A., Barclays Bank PLC,  Wells
          Fargo   Bank,   National  Association   and  Wachovia  Bank,  National
          Association as the  Co-Documentation  Agents;  J.P. Morgan  Securities
          Inc. as the  Lead Arranger  and Sole  Bookrunner;  and  certain  other
          lenders  (incorporated by reference to exhibit  99.2 to the  Company's
          current report on  Form 8-K,  File No. 1-13245,  filed with the SEC on
          January 27, 2005).
10.5G     Fourth Amendment to  the Company's Long-Term Incentive Plan, effective
          as of November 20, 2003.
10.6G     Fifth Amendment to  the Company's Long-Term  Incentive Plan, effective
          as of May 12, 2004.
10.7G     Sixth  Amendment to the Company's Long-Term Incentive  Plan, effective
          as of December 17, 2004.
10.8G     Third Amendment to the Company's  Employee Stock  Purchase Plan, dated
          August 21, 2000.
10.9G     Fourth Amendment  to the Company's Employee Stock Purchase Plan, dated
          February 19, 2003.
10.10G    First  Amendment to  the Company's Pioneer Natural Resources USA, Inc.
          40l(k) and Matching Plan (Amended and Restated Effective as of January
          1, 2002), effective January 10, 2003.
10.11G    Second Amendment  to the Company's Pioneer Natural Resources USA, Inc.
          40l(k) and Matching Plan (Amended and Restated Effective as of January
          1, 2002), effective April 16, 2003.
10.12G    Third  Amendment to the  Company's Pioneer Natural Resources USA, Inc.
          40l(k) and Matching Plan (Amended and Restated Effective as of January
          1, 2002), effective June 16, 2003.
10.13G    Fourth  Amendment to the Company's Pioneer Natural Resources USA, Inc.
          40l(k) and Matching Plan (Amended and Restated Effective as of January
          1, 2002), effective December 24, 2003.
10.14G    Fifth Amendment to the  Company's Pioneer Natural  Resources USA, Inc.
          40l(k) and Matching Plan (Amended and Restated Effective as of January
          1, 2002), effective September 28, 2004.
10.15G    The Company's Executive Deferred Compensation Retirement Plan, Amended
          and Restated Effective as of August 1, 2002.
10.16     Production  Payment Purchase  and Sale Agreement dated as of April 19,
          2005 among the Company, as the Seller, and Wolfcamp Oil and Gas Trust,
          as  the  Buyer  (incorporated  by  reference  to  Exhibit  99.2 to the
          Company's Current Report on Form 8-K, File No. 1-13245, filed with the
          SEC on April 21, 2005).
10.17G    Form of Omnibus  Nonstatutory Stock Option  Agreement for Non-employee
          Directors.
10.18(a)  Purchase and Sale Agreement dated as of  April 28,  2005 among Pioneer
          Natural Resources  Canada Inc.,  as the Vendor,  and  Ketch  Resources
          Ltd., as the Purchaser.
10.19G    Form of Restricted Stock Award Agreement.
10.20G    Form of  Omnibus Nonstatutory Stock  Option Agreement for Option Award
          Participants (Group 1).
10.21G    Offer of Employment Letter dated as of April 8, 2005 among the Company
          and Mark S. Berg.
31.1(a)   Chief Executive  Officer certification  under Section 302 of Sarbanes-
          Oxley Act of 2002.
31.2(a)   Chief  Financial Officer  certification under Section 302 of Sarbanes-
          Oxley Act of 2002.
32.1(b)   Chief Executive  Officer certification under Section  906 of Sarbanes-
          Oxley Act of 2002.
32.2(b)   Chief Financial  Officer certification under  Section 906 of Sarbanes-
          Oxley Act of 2002.
- ---------------
(a) filed herewith.
(b) furnished herewith.

G Executive Compensation Plan or Arrangement filed herewith pursuant to Item
14(c).
                                       44