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 June 30, 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 August 2, 2005... 141,917,573










                        PIONEER NATURAL RESOURCES COMPANY

                                TABLE OF CONTENTS
                                                                         Page
                                                                         ----

Definitions of Certain Terms and Conventions Used Herein..............     3

                          PART I. FINANCIAL INFORMATION

Item 1.        Financial Statements

               Consolidated Balance Sheets as of June 30, 2005 and
                  December 31, 2004...................................     4

               Consolidated Statements of Operations for the three
                  and six months ended June 30, 2005 and 2004.........     6

               Consolidated Statement of Stockholders' Equity for
                  the six months ended June 30, 2005..................     7

               Consolidated Statements of Cash Flows for the three
                  and six months ended June 30, 2005 and 2004.........     8

               Consolidated Statements of Comprehensive Income
                  for the three and six months ended June 30, 2005
                  and 2004............................................     9

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

Item 2.        Management's Discussion and Analysis of Financial
               Condition and Results of Operations....................    30

Item 3.        Quantitative and Qualitative Disclosures About
               Market Risk............................................    42

Item 4.        Controls and Procedures................................    44

                           PART II. OTHER INFORMATION

Item 1.        Legal Proceedings......................................    45

Item 2.        Unregistered Sales of Equity Securities and Use
               of Proceeds............................................    45

Item 4.        Submission of Matters to a Vote of Security Holders....    45

Item 6.        Exhibits...............................................    46

Signatures     .......................................................    47

Exhibit Index  .......................................................    48

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,  which 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,   availability  of  drilling
equipment,  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 and other filings
with the SEC.


                                        2





            Definitions of Certain Terms and Conventions Used Herein


     Within this Report,  the  following  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)



                                                                            June 30,     December 31,
                                                                              2005           2004
                                                                          -----------    -----------
                                                                          (Unaudited)
                                     ASSETS
                                                                                   
Current assets:
  Cash and cash equivalents.............................................  $    58,451    $     7,257
  Accounts receivable:
     Trade, net of allowance for doubtful accounts of $7,394 and
       $7,348 as of June 30, 2005 and December 31, 2004, respectively...      262,189        207,696
     Due from affiliates................................................        3,002          2,583
  Inventories...........................................................       56,282         40,332
  Prepaid expenses......................................................        5,015         10,822
  Deferred income taxes.................................................      151,316        115,206
  Other current assets:
     Derivatives........................................................          105            209
     Other, net of allowance for doubtful accounts of $4,486 as of
       June 30, 2005 and December 31, 2004..............................        8,516          9,320
                                                                           ----------     ----------
          Total current assets..........................................      544,876        393,425
                                                                           ----------     ----------
Property, plant and equipment, at cost:
  Oil and gas properties, using the successful efforts method of
    accounting:
     Proved properties..................................................    7,829,121      7,654,181
     Unproved properties................................................      488,059        470,435
  Accumulated depletion, depreciation and amortization..................   (2,399,542)    (2,243,549)
                                                                           ----------     ----------
          Total property, plant and equipment...........................    5,917,638      5,881,067
                                                                           ----------     ----------
Deferred income taxes...................................................          -            2,963
Goodwill................................................................      307,068        315,880
Other property and equipment, net.......................................       85,212         78,696
Other assets:
  Derivatives...........................................................        2,032            -
  Other, net of allowance for doubtful accounts of $92 as of
     June 30, 2005 and December 31, 2004................................       57,751         56,436
                                                                           ----------     ----------
                                                                          $ 6,914,577    $ 6,728,467
                                                                           ==========     ==========



   The financial information included as of June 30, 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)


                                                                       June 30,     December 31,
                                                                         2005           2004
                                                                      ----------    ----------
                                                                      (Unaudited)

                      LIABILITIES AND STOCKHOLDERS' EQUITY
                                                                              
Current liabilities:
  Accounts payable:
     Trade..........................................................  $  266,877    $  205,153
     Due to affiliates..............................................       6,607        10,898
  Interest payable..................................................      42,682        45,735
  Income taxes payable..............................................      25,439        13,520
  Other current liabilities:
     Derivatives....................................................     345,940       224,612
     Deferred revenue...............................................     139,544           -
     Other..........................................................      57,992        44,541
                                                                       ---------     ---------
          Total current liabilities.................................     885,081       544,459
                                                                       ---------     ---------

Long-term debt......................................................   1,394,739     2,385,950
Derivatives.........................................................     412,662       182,803
Deferred income taxes...............................................     653,593       607,415
Deferred revenue....................................................     759,070           -
Other liabilities and minority interests............................     163,799       176,060
Stockholders' equity:
  Common stock, $.01 par value: 500,000,000 shares authorized;
     146,840,189 and 145,644,828 shares issued as of
     June 30, 2005 and December 31, 2004, respectively..............       1,468         1,456
  Additional paid-in capital........................................   3,762,773     3,705,286
  Treasury stock, at cost: 4,943,056 and 813,166 shares as of
     June 30, 2005 and December 31, 2004, respectively..............    (200,327)      (27,793)
  Deferred compensation.............................................     (56,776)      (22,558)
  Accumulated deficit...............................................    (417,294)     (634,146)
  Accumulated other comprehensive income (loss):
     Net deferred hedge losses, net of tax..........................    (490,237)     (241,350)
     Cumulative translation adjustment..............................      46,026        50,885
                                                                       ---------     ---------
          Total stockholders' equity................................   2,645,633     2,831,780
Commitments and contingencies
                                                                       ---------     ---------
                                                                      $6,914,577    $6,728,467
                                                                       =========     =========



   The financial information included as of June 30, 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       Six months ended
                                                              June 30,                 June 30,
                                                       ---------------------   -----------------------
                                                         2005        2004         2005         2004
                                                       ---------   ---------   ----------   ----------
                                                                                
Revenues and other income:
  Oil and gas.......................................   $ 544,600   $ 424,757   $1,054,642   $ 850,427
  Interest and other................................      47,896       1,610       76,229       3,345
  Gain (loss) on disposition of assets, net.........         148        (232)       2,369        (245)
                                                        --------    --------    ---------    --------
                                                         592,644     426,135    1,133,240     853,527
                                                        --------    --------    ---------    --------
Costs and expenses:
  Oil and gas production............................     107,996      81,177      219,494     155,878
  Depletion, depreciation and amortization..........     147,161     140,528      300,758     274,717
  Impairment of long-lived assets...................         471         -            623         -
  Exploration and abandonments......................      52,384      39,605      119,473     119,351
  General and administrative........................      29,217      17,140       58,802      35,415
  Accretion of discount on asset retirement
     obligations....................................       2,102       2,016        4,242       3,982
  Interest..........................................      30,212      21,402       63,463      42,978
  Other.............................................      17,582       8,300       29,302       8,496
                                                        --------    --------    ---------    --------
                                                         387,125     310,168      796,157     640,817
                                                        --------    --------    ---------    --------
Income from continuing operations before
  income taxes......................................     205,519     115,967      337,083     212,710
Income tax provision................................    (101,983)    (51,759)    (153,846)    (91,536)
                                                        --------    --------    ---------    --------
Income from continuing operations...................     103,536      64,208      183,237     121,174
Income from discontinued operations, net of tax.....      82,023       5,494       86,979       8,716
                                                        --------    --------    ---------    --------
Net income..........................................   $ 185,559   $  69,702   $  270,216   $ 129,890
                                                        ========    ========    =========    ========
Basic earnings per share:
  Income from continuing operations.................   $     .74   $     .54   $     1.29   $    1.02
  Income from discontinued operations, net of tax...         .58         .05          .61         .07
                                                        --------    --------    ---------    --------
  Net income........................................   $    1.32   $     .59   $     1.90   $    1.09
                                                        ========    ========    =========    ========
Diluted earnings per share:
  Income from continuing operations.................   $     .72   $     .53   $     1.26   $    1.01
  Income from discontinued operations, net of tax...         .56         .05          .60         .07
                                                        --------    --------    ---------    --------
  Net income........................................   $    1.28   $     .58   $     1.86   $    1.08
                                                        ========    ========    =========    ========
Weighted average shares outstanding:
  Basic.............................................     140,812     118,855      141,849     118,787
                                                        ========    ========    =========    ========
  Diluted...........................................     145,246     120,402      146,286     120,333
                                                        ========    ========    =========    ========
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)
                                   (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)..................      -           -          -          -        (14,332)          -            -        (14,332)
  Exercise of long-term incentive
   plan stock options.............      -           -      66,466         -        (39,032)          -            -         27,434
  Purchase of treasury stock......      -           -    (239,000)        -             -            -            -       (239,000)
  Tax benefits related to
   stock-based compensation.......      -        9,780         -          -             -            -            -          9,780
  Deferred compensation:
   Compensation deferred.........      12       50,389         -     (50,401)           -            -            -             -
    Deferred compensation included
     in net income................      -           -          -      13,170            -            -            -         13,170
    Forfeitures of deferred
     compensation.................      -       (2,682)        -       3,013            -            -            -            331
  Net income......................      -           -          -          -        270,216           -            -        270,216
  Other comprehensive income (loss):
    Net deferred hedge losses,
     net of tax:
      Net deferred hedge losses...      -           -          -          -             -      (541,285)         -        (541,285)
      Net hedge losses included
       in net income..............      -           -          -          -             -       131,024          -         131,024
      Tax benefits related to
       net hedge losses...........      -           -          -          -             -       161,374          -         161,374
    Translation adjustment........      -           -          -          -             -            -        (4,859)       (4,859)
                                     -----   ---------   --------    -------     ---------     --------      -------     ---------
Balance as of June 30, 2005.......  $1,468  $3,762,773  $(200,327)  $(56,776)   $ (417,294)   $(490,237)    $ 46,026    $2,645,633
                                     =====   =========   ========    =======     =========     ========      =======     =========




         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          Six months ended
                                                                 June 30,                   June 30,
                                                         -----------------------   -------------------------
                                                            2005         2004          2005          2004
                                                         ----------   ----------   -----------   -----------
                                                                                     
Cash flows from operating activities:
  Net income..........................................   $  185,559   $   69,702   $   270,216   $  129,890
  Adjustments to reconcile net income to net
    cash provided by operating activities:
    Depletion, depreciation and amortization..........      147,161      140,528       300,758      274,717
    Impairment of long-lived assets...................          471          -             623          -
    Exploration expenses, including dry holes.........       44,007       33,380       102,156      111,440
    Deferred income taxes.............................       86,434       47,144       129,406       79,864
    Loss (gain) loss on disposition of assets, net....         (148)         232        (2,369)         245
    Accretion of discount on asset retirement
      obligations.....................................        2,102        2,016         4,242        3,982
    Discontinued operations...........................      (79,646)       2,300       (76,796)       5,370
    Interest expense..................................        1,676       (4,993)        2,372      (11,363)
    Commodity hedge related activity..................       (7,666)     (11,242)      (10,727)     (22,533)
    Amortization of stock-based compensation..........        8,018        2,887        13,170        4,866
    Amortization of deferred revenue..................      (20,449)         -         (32,074)         -
    Other noncash items...............................       12,086        6,463        16,764        5,704
  Changes in operating assets and liabilities,
   net of effects from acquisition:
    Accounts receivable, net..........................      (42,269)     (24,803)      (54,302)     (58,540)
    Inventories.......................................      (11,388)      (4,161)      (12,703)      (4,180)
    Prepaid expenses..................................        3,359        3,930         5,808        4,847
    Other current assets, net.........................         (331)         -            (529)         757
    Accounts payable..................................       (8,029)       1,248         9,564       (4,754)
    Interest payable..................................       11,895         (607)       (4,364)          86
    Income taxes payable..............................        9,144        1,397        11,919        4,455
    Other current liabilities.........................       (9,425)        (717)       (5,689)      (6,519)
                                                          ---------    ---------    ----------    ---------
      Net cash provided by operating activities.......      332,561      264,704       667,445      518,334
                                                          ---------    ---------    ----------    ---------
Cash flows from investing activities:
  Payments for acquisition, net of cash acquired......          -            -            (965)         -
  Proceeds from disposition of assets.................      520,502          255     1,120,598          540
  Additions to oil and gas properties.................     (268,387)    (183,605)     (494,557)    (350,831)
  Other property additions, net.......................       (8,660)      (8,883)      (19,722)     (14,243)
                                                          ---------    ---------    ----------    ---------
      Net cash provided by (used in) investing
        activities....................................      243,455     (192,233)      605,354     (364,534)
                                                          ---------    ---------    ----------    ---------
Cash flows from financing activities:
  Borrowings under long-term debt.....................      220,699      100,394       376,412      156,477
  Principal payments on long-term debt................     (664,969)    (146,394)   (1,373,682)    (292,477)
  Payment of other liabilities........................       (5,673)      (3,764)      (13,975)      (8,119)
  Exercise of long-term incentive plan stock options..        2,448        5,513        27,434       14,008
  Purchase of treasury stock..........................      (74,338)      (9,720)     (226,224)     (15,286)
  Payment of financing fees...........................          -           (132)          -           (132)
  Dividends paid......................................      (14,332)     (12,005)      (14,332)     (12,005)
                                                          ---------    ---------    ----------    ---------
      Net cash used in financing activities...........     (536,165)     (66,108)   (1,224,367)    (157,534)
                                                          ---------    ---------    ----------    ---------
Net increase (decrease) in cash and cash equivalents..       39,851        6,363        48,432       (3,734)
Effect of exchange rate changes on cash and
  cash equivalents....................................        2,561         (173)        2,762         (353)
Cash and cash equivalents, beginning of period........       16,039        9,022         7,257       19,299
                                                          ---------    ---------    ----------    ---------
Cash and cash equivalents, end of period..............   $   58,451   $   15,212   $    58,451   $   15,212
                                                          =========    =========    ==========    =========


         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
                                 (in thousands)
                                   (Unaudited)





                                                          Three months ended        Six months ended
                                                               June 30,                  June 30,
                                                       -----------------------   -----------------------
                                                          2005         2004         2005         2004
                                                       ----------   ----------   ----------   ----------

                                                                                  
Net income..........................................   $  185,559   $   69,702   $  270,216   $  129,890
                                                        ---------    ---------    ---------    ---------
Other comprehensive income (loss):
  Net deferred hedge losses, net of tax:
     Net deferred hedge losses......................      (16,689)    (120,204)    (541,285)    (237,596)
     Net hedge losses included in net income........       78,702       56,129      131,024       86,885
     Tax benefits (provisions) related to net
       hedge losses.................................      (30,126)      24,692      161,374       56,579
  Translation adjustment............................       (3,236)      (3,579)      (4,859)      (5,820)
                                                         --------    ---------    ---------    ---------
       Other comprehensive income (loss)............       28,651      (42,962)    (253,746)     (99,952)
                                                         --------    ---------    ---------    ---------
Comprehensive income................................   $  214,210   $   26,740   $   16,470   $   29,938
                                                        =========    =========    =========    =========






         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
                                  June 30, 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,  Sao Tome and Principe,  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 June 30, 2005 and for the three and
six months ended June 30, 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")  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",  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 and six months  ended June 30, 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 for the year
ended December 31, 2004.

     Discontinued operations.  During May 2005, the Company sold its interest in
the Martin  Creek,  Conroy  Black and Lookout  Butte oil and gas  properties  in
Canada.  In  accordance  with SFAS No. 144,  "Accounting  for the  Impairment or
Disposal  of  Long-Lived  Assets",  the  Company  has  reflected  the results of
operations of the disposed properties as discontinued operations, rather than as
a component of  continuing  operations.  See Note O for  additional  information
regarding discontinued operations.

     Inventories.  Inventories were comprised of $53.7 million and $37.9 million
of materials and supplies and $2.6 million and $2.4 million of commodities as of
June 30, 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  is
primarily  acquired for use in future drilling  operations or repair  operations
and is carried at the lower of cost or market,  on a first-in,  first-out basis.
Commodities  inventory is carried at the lower of average  cost or market,  on a
first-in,  first- out basis.  As of June 30, 2005 and  December  31,  2004,  the
Company's  materials and supplies  inventory was net of $.4 million of valuation
reserve allowances.



                                       10




                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                  June 30, 2005
                                   (Unaudited)


     Goodwill. As is described in Note C, the Company recorded $322.1 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
three-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
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 $43 thousand and $6.1 million during
the three and six months  ended June 30,  2005,  respectively,  for 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 six months ended
June 30, 2005. Stock- based  compensation  expense associated with option grants
was not recognized in the  determination  of the Company's net income during the
three and six months ended June 30, 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.



                                       11




                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                  June 30, 2005
                                   (Unaudited)


     The following table  illustrates the pro forma effect on net income and net
income  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 and six months ended June 30,
2005 and 2004:


                                                           Three months ended      Six months ended
                                                                June 30,                June 30,
                                                         ---------------------   ---------------------
                                                            2005        2004        2005        2004
                                                         ---------   ---------   ---------   ---------
                                                           (in thousands, except per share amounts)
                                                                                 
     Net income, as reported..........................   $ 185,559   $  69,702   $ 270,216   $ 129,890
     Plus: Stock-based compensation expense
       included in net income for all awards,
       net of tax (a).................................       5,092       1,833       8,363       3,090
     Deduct: Stock-based compensation expense
       determined under fair value based method
       for all awards, net of tax (a).................      (5,841)     (3,421)    (10,083)     (6,536)
                                                          --------    --------    --------    --------
     Pro forma net income.............................   $ 184,810   $  68,114   $ 268,496   $ 126,444
                                                          ========    ========    ========    ========
     Net income per share:
       Basic - as reported............................   $    1.32   $     .59   $    1.90   $    1.09
                                                          ========    ========    ========    ========
       Basic - pro forma..............................   $    1.31   $     .57   $    1.89   $    1.06
                                                          ========    ========    ========    ========
       Diluted - as reported..........................   $    1.28   $     .58   $    1.86   $    1.08
                                                          ========    ========    ========    ========
       Diluted - pro forma............................   $    1.28   $     .57   $    1.85   $    1.05
                                                          ========    ========    ========    ========
<FN>
- -----------
(a)  For the three and six months ended June 30, 2005, stock-based  compensation
     expense  included in net income is net of tax  benefits of $2.9 million and
     $4.8  million,  respectively,  as compared to $1.1 million and $1.8 million
     for  the  same   respective   periods  in  2004.   Similarly,   stock-based
     compensation  expense  determined under the fair value based method for the
     three and six months  ended June 30,  2005 is net of tax  benefits  of $3.4
     million and $5.8  million,  respectively,  as compared to $2.0  million and
     $3.8  million  for the same  respective  periods  in  2004.  See Note E for
     additional information regarding the Company's income taxes.
</FN>


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

     SFAS 123(R). In December 2004, the FASB issued SFAS No. 123 (revised 2004),
"Share-Based  Payment"  ("SFAS  123(R)"),  which is a revision of SFAS 123. SFAS
123(R) also 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 as
stock-based  compensation  expense 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 expense 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.


                                       12




                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                  June 30, 2005
                                   (Unaudited)


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  does not  recognize
compensation  expense  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 net income per share  disclosures  above.  The  adoption of
SFAS 123(R) will have no effect on future  results of operations  related to 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  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 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 from  operating  activities and
increase  future  cash  flows  from  financing  activities,  to  the  extent  of
associated tax benefits that may be realized in the future.

     FIN 47.  In March  2005,  the  FASB  issued  FASB  Interpretation  No.  47,
"Accounting for Conditional Asset Retirement  Obligations,  an interpretation of
FASB  Statement No. 143" ("FIN 47").  FIN 47 clarifies  that  conditional  asset
retirement  obligations  meet  the  definition  of  liabilities  and  should  be
recognized when incurred if their fair values can be reasonably  estimated.  The
interpretation  is effective no later than  December  31, 2005.  The  cumulative
effect of initially applying the  interpretation  will be recognized as a change
in  accounting  principle.  The  Company  is in the  process of  evaluating  the
expected effect of FIN 47 on its Consolidated Financial Statements.

     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 completion of drilling 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. Accordingly, the Company adopted the new requirements on April 1, 2005 and
has included the  required  disclosures  in Note D. The adoption of FSP FAS 19-1
did not impact  the  Company's  consolidated  financial  position  or results of
operations.

                                       13




                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                  June 30, 2005
                                   (Unaudited)



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.  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 F 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  $322.1  million  of  goodwill  associated  with the
Evergreen merger, which 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  and six  months  ended  June 30,  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.


                                                           Three months ended    Six months ended
                                                              June 30, 2004        June 30, 2004
                                                           ------------------    ----------------
                                                          (in thousands, except per share amounts)
                                                                              
Revenues                                                       $ 491,054            $ 980,623
                                                                ========             ========

Income from continuing operations........................      $  73,178            $ 136,953
Income from discontinued operations,  net of tax.........          5,494                8,716
                                                                --------             --------
Net income...............................................      $  78,672            $ 145,669
                                                                ========             ========
Basic earnings per share:
   Income from continuing operations.....................      $     .51            $     .95
   Income from discontinued operations, net of tax.......            .04                  .06
                                                                --------             --------
   Net income............................................      $     .55            $    1.01
                                                                ========             ========
Diluted earnings per share:
   Income from continuing operations.....................      $     .49            $     .92
   Income from discontinued operations, net of tax.......            .04                  .06
                                                                --------             --------
   Net income............................................      $     .53            $     .98
                                                                ========             ========



                                       14




                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                  June 30, 2005
                                   (Unaudited)


NOTE D.     Exploratory Well Costs

     The Company  capitalizes  exploratory  well costs until a determination  is
made that the well has either found proved  reserves or that it is impaired.  If
the exploratory well is determined to be impaired, the well costs are charged to
expense.

     The following  table reflects the Company's  capitalized  exploratory  well
activity during the three and six months ended June 30, 2005 and the years ended
December 31, 2004 and 2003:


                                                                                           Year ended
                                                   Three months      Six months           December 31,
                                                       ended            ended        ----------------------
                                                   June 30, 2005    June 30, 2005      2004          2003
                                                   -------------    -------------    ---------    ---------
                                                                         (in thousands)
                                                                                      
  Beginning capitalized exploratory well costs ....  $ 136,002        $ 126,472      $ 108,986    $  71,500
  Additions to exploratory well costs pending the
    determination of proved reserves...............     33,521           98,023        156,937      216,352
  Reclassifications due to determination of
    proved reserves................................    (16,753)         (44,899)       (56,639)    (117,966)
  Exploratory well costs charged to expense........    (18,183)         (45,009)       (82,812)     (60,900)
                                                      --------         --------       --------     --------
  Ending capitalized exploratory well costs .......  $ 134,587        $ 134,587      $ 126,472    $ 108,986
                                                      ========         ========       ========     ========


     The following  table provides an aging as of June 30, 2005 and December 31,
2004  and  2003 of  capitalized  exploratory  well  costs  based on the date the
drilling was completed and the number of wells for which  exploratory well costs
have been  capitalized  for a period  greater  than one year  since the date the
drilling was completed:


                                                                                      December 31,
                                                                    June 30,     -----------------------
                                                                      2005         2004           2003
                                                                    ---------    ---------     ---------
                                                                     (in thousands, except well counts)
                                                                                      
  Capitalized exploratory well costs that have been
     capitalized for a period of one year or less..............     $  40,879    $  35,046     $  75,120
  Capitalized exploratory well costs that have been
     capitalized for a period greater than one year............        93,708       91,426        33,866
                                                                     --------     --------      --------
                                                                    $ 134,587    $ 126,472     $ 108,986
                                                                     ========     ========      ========
  Number of wells with exploratory well costs that
     have been capitalized for a period greater than one year..             8           10             3
                                                                     ========     ========      ========


     The following  table  provides the  capitalized  exploratory  well costs of
significant discrete exploration projects that have been suspended for more than
one year as of June 30, 2005 and December 31, 2004 and 2003:


                                                                                      December 31,
                                                                    June 30,     -----------------------
                                                                      2005         2004           2003
                                                                    --------     ---------     ---------
                                                                              (in thousands)
                                                                                      
  United States:
    Ozona Deep.................................................     $  19,422     $  19,462    $ 19,003
    Oooguruk...................................................        49,199        47,083         -

  Canada - Other...............................................           -           1,214         -
  South Africa - Gas Project...................................        15,278        14,895      14,863
  Tunisia - Anaguid............................................         9,809         8,772         -
                                                                     --------      --------     -------
      Total....................................................     $  93,708     $  91,426    $ 33,866
                                                                     ========      ========     =======


                                       15




                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                  June 30, 2005
                                   (Unaudited)



     The  following   discussion  describes  the  history  and  status  of  each
significant suspended exploratory project:

     Ozona Deep. The Company's  Ozona Deep  exploration  well was drilled during
2002 and found quantities of oil believed to be commercial;  however,  given its
location  in the Gulf of Mexico,  it is  necessary  to have a signed  production
handling  agreement  ("PHA")  with  infrastructure  in the  area to  insure  the
economics  associated  with  the  discovery  prior to  doing  further  appraisal
drilling.  Pioneer and the operator of Ozona Deep have been diligently  engaging
potential counterparties to enter into a PHA to bring future production from the
discovery to their platform. The Company anticipates entering into a PHA in 2005
and drilling an appraisal well during 2006.

     Oooguruk. During 2003, the Company's Alaskan Oooguruk discovery wells found
quantities of oil believed to be commercial.  In 2003, the Company began farm-in
discussions with the owner of undeveloped  discoveries in adjacent acreage given
its  proximity and the potential  cost benefits of a larger scale  project.  The
farm-in was completed during 2004. Along with completing the farm-in  agreement,
Pioneer  obtained  access to  exploration  well and seismic  data to improve the
Company's  understanding  of the potential of the discoveries  without having to
drill  additional  wells.  In late 2004,  the  Company  completed  an  extensive
technical and economic evaluation of the resource potential within this area and
authorized a front-end  engineering  design  study  ("FEED  study") for the area
which is  expected  to be  completed  by the end of 2005.  If the FEED study and
commercial  arrangements confirm favorable  development  economics,  the Company
plans to  begin  development  operations  during  2006,  subject  to  regulatory
approvals, with first oil sales targeted in 2008. Simultaneously, the Company is
working to secure throughput  agreements to process the associated potential oil
production at a nearby facility should the project be sanctioned.

     South Africa - Gas  Project.  During  2001,  the Company  drilled two South
African  discovery wells that found quantities of condensate and gas believed to
be commercial. During 2004, 2003 and 2002, the Company actively reviewed the gas
supply and  demand  fundamentals  in South  Africa  and had  discussions  with a
gas-to-liquids  plant in the area to purchase  the  condensate  and gas.  During
2004, a FEED study was authorized  for the gas  development  and  infrastructure
design.  The FEED study was completed in early 2005 and based on that study, the
plant operator has initiated  purchase orders for long-lead time  infrastructure
components.  Currently, negotiations are underway to secure a gas sales contract
and related production  agreements and it is the Company's  expectation that the
project will be sanctioned in 2005.

     Tunisia - Anaguid.  During 2003, the Company drilled two exploration  wells
on its Anaguid  Block in Tunisia which found  quantities  of condensate  and gas
believed to be  commercial.  During 2004,  the wells were scheduled and approved
for  extended  production  tests.  However,  the  project  operator  delayed the
extended production tests due to issues unrelated to the Company or the project.
In 2005, the project operator,  along with the Company, has approved an extended
production test of one of the existing wells in 2005 and has commenced  drilling
an appraisal well.

NOTE E.     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
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 June  30,  2005,  the  Company's  valuation
allowance  was  $97.7   million  and  was  primarily   related  to  foreign  tax
jurisdictions.

     In October  2004,  the American  Jobs Creation Act ("AJCA") was signed into
law. The AJCA includes a dividend  deduction of 85 percent of qualified  foreign
earnings that are repatriated, as defined in AJCA. During June 2005, the Company
determined  that it was  advantageous  to apply  the  provisions  of the AJCA to
qualified foreign earnings that could be repatriated.  The Company  formalized a
repatriation plan in June 2005 and repatriated  $313 million from Canada,  South

                                       16




                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                  June 30, 2005
                                   (Unaudited)


Africa and Tunisia.  Based on the current understanding of the provisions of the
AJCA and  projections of future  foreign  earnings,  the Company  estimates that
approximately  $168.8  million of the  repatriated  funds will  qualify  for the
dividend  exclusion.  The Company is obligated by the  provisions of the AJCA to
invest the qualified excluded dividends in the United States within a reasonable
period of time. The Company estimated the cash tax liability associated with the
qualifying dividends to be approximately $9.2 million for 2005. During the three
and six months ended June 30, 2005, the Company recognized income tax expense of
$3.2  million  related to  continuing  operations  and $2.9  million  related to
discontinued  operations associated with qualifying  dividends.  The Company may
repatriate  additional  earnings  during  2005,  if  available,  under  the AJCA
depending  upon (a) the  Company's  financial  results  and  activities  for the
remainder  of 2005 and (b)  further  clarifications  of certain  elements of the
AJCA.

     The Company's  income tax provision  attributable to income from continuing
operations  consisted of the  following  for the three and six months ended June
30, 2005 and 2004:


                                           Three months ended         Six months ended
                                                June 30,                   June 30,
                                         ----------------------    ----------------------
                                            2005        2004          2005         2004
                                         ---------    ---------    ---------    ---------
                                                         (in thousands)
                                                                    
     Current:
       U.S. federal...................   $   4,657    $   1,500    $   4,657    $   2,500
       U.S. state and local...........         131          301          131          301
       Foreign........................      10,761        2,814       19,652        8,871
                                          --------     --------     --------     --------
                                            15,549        4,615       24,440       11,672
                                          --------     --------     --------     --------
     Deferred:
       U.S. federal...................      82,287       45,998      123,819       80,078
       U.S. state and local...........       3,548        1,663        4,695        3,092
       Foreign........................         599         (517)         892       (3,306)
                                          --------     --------     --------     --------
                                            86,434       47,144      129,406       79,864
                                          --------     --------     --------     --------
                                         $ 101,983    $  51,759    $ 153,846    $  91,536
                                          ========     ========     ========     ========


     Included in the Company's income tax provision for the three and six months
ended June 30,  2005 is the  reversal of a $27.3  million  tax benefit  recorded
principally in the third quarter of 2004 as a result of the  cancellation of the
development  of the  Olowi  block  and the  Company's  decision  to exit  Gabon.
Reversal of the tax benefit is the result of signing an  agreement  in June 2005
to sell its shares in the  subsidiary  that owns the interest in the Olowi block
to an unaffiliated  buyer,  which makes it more likely than not that the Company
will not realize the originally recorded tax benefit.

NOTE F.     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  Note M for
additional discussion regarding the Company's VPP agreements.

     During 2005,  the Company  reduced the loan  commitments  under the 364-Day
Credit Agreement by $500 million leaving a remaining commitment of $400 million.

     As of June 30, 2005,  the Company had no outstanding  borrowings  under its
lines of credit and it was in compliance with all of its debt covenants.


                                       17




                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                  June 30, 2005
                                   (Unaudited)


     Senior notes.  During April 2005,  $131.0  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.

     During April 2005, the Company  redeemed $32.4 million  principal amount of
its outstanding  9-5/8% senior notes due 2010 (the "9-5/8" Notes").  The Company
recognized a pretax loss on the  redemption  of the 9-5/8% Notes of $7.3 million
which is included in other  expense  for the three and six month  periods  ended
June 30, 2005.

NOTE G.     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 reducing  costs of capital.
During the six months ended June 30,  2004,  the Company  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
and six  months  ended June 30,  2004,  settlements  of open fair  value  hedges
reduced  the  Company's  interest  expense  by $1.8  million  and $2.0  million,
respectively.  As of June 30, 2005 and December 31, 2004,  the Company was not a
party to any open fair value hedges.

     As of June 30, 2005, the carrying value of the Company's  long-term debt in
the accompanying  Consolidated  Balance Sheets included a $5.9 million reduction
in the carrying  value  attributable  to net deferred hedge losses on terminated
fair value hedges that are being amortized as increases or decreases to interest
expense over the original terms of the terminated  agreements.  The amortization
of deferred hedge gains on terminated  interest rate swaps reduced the Company's
reported  interest expense by $1.1 million and $3.3 million during the three and
six months  ended June 30, 2005,  respectively,  as compared to $6.1 million and
$13.4 million during the same respective periods in 2004.

     The  following  table  sets  forth,  as of June  30,  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:


                                         Six months
                                           ending               Year ending December 31,
                                         December 31,  -----------------------------------------
                                            2005         2006       2007       2008       2009     Thereafter
                                         -----------   --------   --------   --------   --------   ---------
                                                                    (in thousands)
                                                                                  
  Net deferred hedge gains (losses).....   $  1,006    $    342   $ (1,962)  $ (1,333)  $ (1,541)   $ (5,700)
                                            =======     =======    =======    =======    =======     =======


     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.



                                       18




                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                  June 30, 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  June  30,  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 June 30, 2005:


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

   2006 - Swap Contracts
     Volume (Bbl)........................         10,000          10,000         10,000          10,000         10,000
     Price per Bbl.......................  $       31.69   $       31.69  $       31.69  $        31.69  $       31.69

   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)........................         17,000          17,000         17,000          17,000         17,000
     Price per Bbl.......................  $       29.21   $       29.21  $       29.21  $        29.21  $       29.21


       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 and six months ended June 30, 2005 and
2004:


                                                      Three months ended      Six months ended
                                                            June 30,              June 30,
                                                      -------------------   -------------------
                                                        2005       2004       2005       2004
                                                      --------   --------   --------   --------
                                                                           
    Average price reported per Bbl.................   $  35.52   $  27.92   $  34.33   $  28.12
    Average price realized per Bbl.................   $  48.45   $  33.93   $  45.76   $  33.00
    Reduction to oil revenue (in millions).........   $  (52.8)  $  (24.5)  $  (97.1)  $  (41.0)


     Natural gas liquids prices.  During the three and six months ended June 30,
2005 and 2004,  the  Company did not enter into any NGL hedge  contracts.  There
were no outstanding NGL hedge contracts at June 30, 2005.



                                       19




                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                  June 30, 2005
                                   (Unaudited)


     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 June 30, 2005:



                                                 First        Second        Third         Fourth     Outstanding
                                                Quarter       Quarter       Quarter       Quarter      Average
                                              -----------   -----------   -----------  -----------   ------------
                                                                                      
Average daily gas production hedged:
   2005 - Swap Contracts
     Volume (MMBtu)........................                                   283,422      253,535       268,478
     Index price per MMBtu.................                               $      5.18  $      5.17   $      5.17

   2006 - Swap Contracts
     Volume (MMBtu)........................        73,710        73,790        73,880       73,984        73,842
     Index price per MMBtu.................   $      4.30   $      4.30   $      4.31  $      4.31   $      4.30

   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)........................        29,071        29,146        29,231       29,329        29,195
     Index price per MMBtu.................   $      4.27   $      4.28   $      4.29  $      4.29   $      4.28

   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


     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 and six
months ended June 30, 2005 and 2004:


                                                      Three months ended      Six months ended
                                                            June 30,              June 30,
                                                      -------------------   -------------------
                                                        2005       2004       2005       2004
                                                      --------   --------   --------   --------
                                                                           
       Average price reported per Mcf..............   $   5.35   $   4.28   $   5.18   $   4.31
       Average price realized per Mcf..............   $   5.74   $   4.79   $   5.44   $   4.69
       Reduction to gas revenue (in millions)......   $  (25.9)  $  (31.6)  $  (33.9)  $  (45.9)


     Hedge ineffectiveness. During the three and six months ended June 30, 2005,
the Company  recognized hedge  ineffectiveness  charges to other expense of $4.7
million and $11.5  million,  respectively,  as compared to $1.8 million and $1.9
million during the same respective periods of 2004.

     Accumulated other comprehensive  income (loss) - net deferred hedge losses,
net of tax ("AOCI - Hedging"). As of June 30, 2005 and December 31, 2004, AOCI -
Hedging  represented  net deferred  losses of $490.2 million and $241.4 million,
respectively.  The AOCI - Hedging  balance as of June 30, 2005 was  comprised of
$743.7  million of net deferred  losses on the  effective  portions of open cash
flow hedges, $32.6 million of net deferred losses on terminated cash flow hedges
(including  $3.3 million of net deferred losses on terminated cash flow interest
rate hedges) and $286.1  million of associated  net deferred tax  benefits.  The
increase  in AOCI -  Hedging  during  the six  months  ended  June 30,  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

                                       20




                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                  June 30, 2005
                                   (Unaudited)


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 June 30, 2006,  based on current  estimates
of future commodity prices,  the Company expects to reclassify $342.5 million of
net deferred losses  associated  with open commodity  hedges and $7.9 million of
net deferred  losses on terminated  commodity  hedges from AOCI - Hedging to oil
and gas revenues.  The Company also expects to reclassify  approximately  $128.0
million of net deferred  income tax benefits  associated  with commodity  hedges
during the twelve  months ending June 30, 2006 from AOCI - Hedging to income tax
benefit.

     The  following  table  sets  forth,  as of June  30,  2005,  the  scheduled
amortization of net deferred gains (losses) on terminated  commodity hedges that
will be recognized as decreases in the case of losses, and increases in the case
of gains, 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..........                           $   (610)   $ (1,873)   $  (2,483)
    2006 net deferred hedge losses..........   $ (5,098)   $   (302)   $    (59)   $   (727)      (6,186)
    2007 net deferred hedge gains (losses)..   $ (3,764)   $    148    $    424    $   (347)      (3,539)
    2008 net deferred hedge losses..........   $ (2,877)   $   (372)   $   (284)   $   (839)      (4,372)
    2009 net deferred hedge losses..........   $ (2,330)   $   (232)   $   (230)   $   (822)      (3,614)
    2010 net deferred hedge losses..........   $   (667)   $   (620)   $   (578)   $   (539)      (2,404)
    2011 net deferred hedge losses..........   $   (873)   $   (889)   $   (903)   $   (906)      (3,571)
    2012 net deferred hedge losses..........   $   (810)   $   (791)   $   (784)   $   (772)      (3,157)
                                                                                                --------
                                                                                               $ (29,326)
                                                                                                ========


NOTE H.     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 and
six months ended June 30, 2005 and 2004:


                                                        Three months ended         Six months ended
                                                             June 30,                  June 30,
                                                      ----------------------    ----------------------
                                                         2005         2004         2005         2004
                                                      ---------    ---------    ---------    ---------
                                                                      (in thousands)
                                                                                 
    Beginning asset retirement obligations.........   $ 121,937    $ 107,034    $ 120,879    $ 105,036
      New wells placed on production and
         changes in estimates......................       1,150          336        2,595        3,068
      Disposition of wells.........................      (5,238)         -         (5,238)         -
      Liabilities settled..........................      (1,855)        (381)      (4,255)      (2,978)
      Accretion of discount........................       2,102        2,016        4,242        3,982
      Currency translation.........................        (343)        (185)        (470)        (288)
                                                       --------     --------     --------     --------
    Ending asset retirement obligations ...........   $ 117,753    $ 108,820    $ 117,753    $ 108,820
                                                       ========     ========     ========     ========





                                       21




                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                  June 30, 2005
                                   (Unaudited)


     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 I.     Postretirement Benefit Obligations

     As of June 30, 2005 and December 31, 2004,  the Company had recorded  $15.5
million 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 and six months
ended June 30, 2005 and 2004:


                                                        Three months ended         Six months ended
                                                             June 30,                  June 30,
                                                      ----------------------    ----------------------
                                                         2005         2004         2005         2004
                                                      ---------    ---------    ---------    ---------
                                                                      (in thousands)
                                                                                 
    Beginning accumulated postretirement benefit
      obligations..................................   $  15,654    $  15,501    $  15,534    $  15,556
       Benefit payments............................        (443)        (175)        (629)        (514)
       Service costs...............................          81           59          162          117
       Accretion of discounts......................         225          226          450          452
                                                       --------     --------     --------     --------
    Ending accumulated postretirement benefit
      obligations..................................   $  15,517    $  15,611    $  15,517    $  15,611
                                                       ========     ========     ========     ========


NOTE J.     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 its assessment of 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 plaintiffs allege are a
"cost of  production",  and for which the  plaintiffs  claim  they,  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  $33 million
related to the cost of production claim and approximately $41 million related to
the helium claim, plus prejudgment  interest.  However,  the Company believes it
has  valid  defenses  to the  plaintiffs'  claims  and has paid  the  plaintiffs
properly  under their  respective oil and gas leases and other  agreements,  and
intends to vigorously defend itself.



                                       22




                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                  June 30, 2005
                                   (Unaudited)


     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  United  States  subsidiary,
Pioneer  Natural  Resources USA, Inc., were named as defendants in 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 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.  ("Woodside"),  concealed the value of
the royalty interest and worked to terminate the Mesa Offshore Trust prematurely
and to capture for itself and Woodside  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  environmental  authorities in the
Neuquen Province  relating to permits for 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. The
Company's  subsidiary in Argentina has also been named in a suit against various
oil   companies   operating  in  the  Neuquen  basin   entitled   Asociacion  de
Superficiarios de la Patagonia v. YPF S.A., et. al.,  originally filed on August
21, 2003, in the Argentine National Supreme Court of Justice. The plaintiffs,  a
private group of landowners, have also named the national government and several
provinces  as third  parties.  The  lawsuit  alleges  injury to the  environment
generally by the oil and gas industry without  specifically  alleging how any of
the defendants caused this injury.  The plaintiffs  principally seek creation of
an insured fund to remediate the environment.  The Company's  subsidiary intends
to defend itself in the case.  Although the suit is at an early procedural stage
and appears to involve  novel  theories,  the Company  does not believe that the
lawsuit  will have a  material  adverse  effect  on its  business  or  financial
condition.

                                       23




                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                  June 30, 2005
                                   (Unaudited)



NOTE K.     Income Per Share From Continuing Operations

     Basic income per share from  continuing  operations is computed by dividing
income from  continuing  operations  by the  weighted  average  number of common
shares  outstanding for the period.  The computation of diluted income per share
from continuing  operations  reflects the potential dilution that could occur if
securities or other  contracts to issue common stock that are dilutive to income
from  continuing  operations  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 income from  continuing
operations to diluted  income from  continuing  operations for the three and six
months ended June 30, 2005 and 2004:


                                                         Three months ended         Six months ended
                                                              June 30,                  June 30,
                                                       ----------------------    ----------------------
                                                          2005         2004         2005         2004
                                                       ---------    ---------    ---------    ---------
                                                                       (in thousands)
                                                                                  
  Basic income from continuing operations............  $ 103,536    $  64,208    $ 183,237    $ 121,174
  Interest expense on convertible notes, net of tax..        801          -          1,603          -
                                                        --------     --------     --------     --------

  Diluted income from continuing operations..........  $ 104,337    $  64,208    $ 184,840    $ 121,174
                                                        ========     ========     ========     ========


       The following table is a reconciliation of basic weighted average common
shares outstanding to diluted weighted average common shares outstanding for the
three and six months ended June 30, 2005 and 2004:


                                                        Three months ended         Six months ended
                                                             June 30,                  June 30,
                                                      ----------------------    ----------------------
                                                         2005         2004         2005         2004
                                                      ---------    ---------    ---------    ---------
                                                                       (in thousands)
                                                                                 
   Weighted average common shares outstanding:
      Basic.......................................      140,812      118,855      141,849     118,787
      Dilutive common stock options (a)...........        1,108        1,080        1,201       1,128
      Restricted stock awards.....................          999          467          909         418
      Convertible notes dilution (b)..............        2,327          -          2,327         -
                                                       --------     --------     --------     -------
      Diluted.....................................      145,246      120,402      146,286     120,333
                                                       ========     ========      =======     =======
<FN>
- ---------------
(a)  Common stock  options to purchase  2,857 and 30,712  shares of common stock
     were outstanding but not included in the computations of diluted income per
     share from  continuing  operations  for the three and six months ended June
     30, 2005 and 2004, respectively, 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 L.     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,  Sao Tome and  Principe,  South Africa and
Tunisia.

                                       24




                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                  June 30, 2005
                                   (Unaudited)


     The following  tables provide the Company's  interim  geographic  operating
segment  data  for the  three  and six  months  ended  June 30,  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  income and  expenses  that are not  routinely  included in the
earnings measures  internally  reported to management on a geographic  operating
segment basis.


                                         United                            Africa                    Consolidated
                                         States    Argentina    Canada    and Other   Headquarters       Total
                                        --------   ---------   --------   ---------   ------------   ------------
                                                                 (in thousands)
                                                                                   
Three months ended June 30, 2005:
 Revenues and other income:
     Oil and gas......................  $430,958   $ 40,779    $ 23,561    $ 49,302      $    -        $ 544,600
     Interest and other...............       -          -           -           -          47,896         47,896
     Gain on disposition of
       assets, net....................       -          -           -           -             148            148
                                         -------    -------     -------     -------       -------       --------
                                         430,958     40,779      23,561      49,302        48,044        592,644
                                         -------    -------     -------     -------       -------       --------
  Costs and expenses:
     Oil and gas production...........    82,944      8,895       8,524       7,633           -          107,996
     Depletion, depreciation and
        amortization..................   107,447     19,886       7,402       7,260         5,166        147,161
     Impairment of long-lived assets         -          -           -           471           -              471
     Exploration and abandonments.....    32,460      5,850       2,682      11,392           -           52,384
     General and administrative.......       -          -           -           -          29,217         29,217
     Accretion of discount on asset
        retirement obligations........       -          -           -           -           2,102          2,102
     Interest.........................       -          -           -           -          30,212         30,212
     Other............................       -          -           -           -          17,582         17,582
                                         -------    -------     -------     -------       -------       --------
                                         222,851     34,631      18,608      26,756        84,279        387,125
                                         -------    -------     -------     -------       -------       --------
  Income (loss) from continuing
     operations before income taxes...   208,107      6,148       4,953      22,546       (36,235)       205,519
  Income tax provision................   (75,958)    (2,152)     (1,808)     (8,475)      (13,590)      (101,983)
                                         -------    -------     -------     -------       -------       --------
  Income (loss) from continuing
     operations.......................  $132,149   $  3,996    $  3,145    $ 14,071      $(49,825)     $ 103,536
                                         =======    =======     =======     =======       =======       ========

Three months ended June 30, 2004:
  Revenues and other income:
     Oil and gas......................  $356,780   $ 26,614    $  8,706    $ 32,657      $    -        $ 424,757
     Interest and other...............       -          -           -           -           1,610          1,610
     Gain (loss) on disposition of
       assets, net....................       -          -          (252)        -              20           (232)
                                         -------    -------     -------     -------       -------       --------
                                         356,780     26,614       8,454      32,657         1,630        426,135
                                         -------    -------     -------     -------       -------       --------
  Costs and expenses:
     Oil and gas production...........    60,185      8,416       4,227       8,349           -           81,177
     Depletion, depreciation and
        amortization..................   106,087     14,820       5,170      11,737         2,714        140,528
     Exploration and abandonments.....    11,834      7,847       1,176      18,748           -           39,605
     General and administrative.......       -          -           -           -          17,140         17,140
     Accretion of discount on asset
        retirement obligations........       -          -           -           -           2,016          2,016
     Interest.........................       -          -           -           -          21,402         21,402
     Other............................       -          -           -           -           8,300          8,300
                                         -------    -------     -------     -------       -------       --------
                                         178,106     31,083      10,573      38,834        51,572        310,168
                                         -------    -------     -------     -------       -------       --------
  Income (loss) from continuing
     operations before income taxes...   178,674     (4,469)     (2,119)     (6,177)      (49,942)       115,967
  Income tax benefit (provision)......   (65,216)     1,564         800       1,955         9,138        (51,759)
                                         -------    -------     -------     -------       -------       --------
  Income (loss) from continuing
     operations.......................  $113,458   $ (2,905)   $ (1,319)   $ (4,222)     $(40,804)     $  64,208
                                         =======    =======     =======     =======       =======       ========



                                       25




                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                  June 30, 2005
                                   (Unaudited)




                                         United                            Africa                    Consolidated
                                         States    Argentina    Canada    and Other   Headquarters       Total
                                        --------   ---------   --------   ---------   ------------   ------------
                                                                 (in thousands)
                                                                                   
Six months ended June 30, 2005:
  Revenues and other income:
     Oil and gas......................  $ 834,791   $ 78,809   $ 44,049    $ 96,993      $    -        $1,054,642
     Interest and other...............        -          -          -           -          76,229          76,229
     Gain on disposition of
       assets, net....................      2,032        -          -           -             337           2,369
                                         --------    -------     ------     -------       -------       ---------
                                          836,823     78,809     44,049      96,993        76,566       1,133,240
                                         --------    -------     ------     -------       -------       ---------
  Costs and expenses:
     Oil and gas production...........    169,088     17,402     17,604      15,400           -           219,494
     Depletion, depreciation and
        amortization..................    221,893     37,818     14,441      16,638         9,968         300,758
     Impairment of long-lived assets..        -          -          -           623           -               623
     Exploration and abandonments.....     71,939      8,434      6,423      32,677           -           119,473
     General and administrative.......        -          -          -           -          58,802          58,802
     Accretion of discount on asset
        retirement obligations........        -          -          -           -           4,242           4,242
     Interest.........................        -          -          -           -          63,463          63,463
     Other............................        -          -          -           -          29,302          29,302
                                         --------    -------     ------     -------       -------       ---------
                                          462,920     63,654     38,468      65,338       165,777         796,157
                                         --------    -------     ------     -------       -------       ---------
  Income (loss) from continuing
     operations before income taxes...    373,903     15,155      5,581      31,655       (89,211)        337,083
  Income tax benefit (provision)......   (136,474)    (5,304)    (2,037)    (10,535)          504        (153,846)
                                         --------    -------     ------     -------       -------       ---------
  Income (loss) from continuing
     operations.......................  $ 237,429   $  9,851   $  3,544    $ 21,120      $(88,707)     $  183,237
                                         ========    =======    =======     =======       =======       =========

Six months ended June 30, 2004:
  Revenues and other income:
     Oil and gas......................  $ 703,089   $ 57,497   $ 17,068    $ 72,773      $    -        $  850,427
     Interest and other...............        -          -          -           -           3,345           3,345
     Gain (loss) on disposition of
       assets, net....................         51        -         (252)        -             (44)           (245)
                                         --------    -------     ------     -------       -------       ---------
                                          703,140     57,497     16,816      72,773         3,301         853,527
                                         --------    -------     ------     -------       -------       ---------
  Costs and expenses:
     Oil and gas production...........    115,205     15,175      8,665      16,833           -           155,878
     Depletion, depreciation and
        amortization..................    203,458     27,362     10,335      28,133         5,429         274,717
     Exploration and abandonments.....     65,390     11,397     13,392      29,172           -           119,351
     General and administrative.......        -          -          -           -          35,415          35,415
     Accretion of discount on asset
        retirement obligations........        -          -          -           -           3,982           3,982
     Interest.........................        -          -          -           -          42,978          42,978
     Other............................        -          -          -           -           8,496           8,496
                                         --------    -------     ------     -------       -------       ---------
                                          384,053     53,934     32,392      74,138        96,300         640,817
                                         --------    -------     ------     -------       -------       ---------
  Income (loss) from continuing
     operations before income taxes...    319,087      3,563    (15,576)     (1,365)      (92,999)        212,710
  Income tax benefit (provision)......   (116,467)    (1,247)     5,880         793        19,505         (91,536)
                                         --------    -------     ------     -------       -------       ---------
  Income (loss) from continuing
     operations.......................  $ 202,620   $  2,316   $ (9,696)   $   (572)     $(73,494)     $  121,174
                                         ========    =======    =======     =======       =======       =========



                                       26





                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                  June 30, 2005
                                   (Unaudited)


NOTE M.     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 January
VPPs were initially used to reduce outstanding  indebtedness.  The first January
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 January 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 a new VPP for net
proceeds  of  $300.4   million,   including  the  assignment  of  the  Company's
obligations under certain  derivative hedge agreements.  Proceeds from the April
VPP were initially used to reduce outstanding  indebtedness.  The April VPP sold
6.0 Bcf of Spraberry field gas volumes over an expected 32-month term that began
in May 2005 and 6.2  MMBbls of  Spraberry  field oil  volumes  over an  expected
five-year term beginning in January 2006.

     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) transfer title to the purchaser and (v) allow 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
Company's VPPs:


                                                   January VPPs                 April VPP
                                            -------------------------    -------------------------
                                              Hugoton      Spraberry      Spraberry    Spraberry
                                            Field (Gas)   Field (Oil)    Field (Gas)   Field (Oil)       Total
                                            -----------   -----------    -----------   -----------    -----------
                                                              (in thousands)
                                                                                       
  VPP proceeds, net of transaction costs..   $  275,161    $  317,120     $  37,611     $  262,779    $   892,671
  Fair value of derivatives conveyed (a)..       12,860        36,759          (526)       (11,076)        38,017
                                              ---------     ---------      --------      ---------     ----------
  Deferred revenue........................      288,021       353,879        37,085        251,703        930,688
  Less 2005 amortization..................      (29,552)          -          (2,522)           -          (32,074)
                                              ---------     ---------      --------      ---------     ----------
    Deferred revenue at June 30, 2005.....   $  258,469    $  353,879     $  34,563     $  251,703    $   898,614
                                              =========     =========      ========      =========     ==========
<FN>
- -----------
(a)  Represents the fair value of the derivative obligations conveyed as part of
     the VPP transactions. 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 increases or decreases to oil and gas  revenues.  See Note G
     for additional discussion regarding the Company's hedge positions.
</FN>



                                       27




                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                  June 30, 2005
                                   (Unaudited)


     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.........................     $   43,700
              2006...................................        190,347
              2007...................................        181,250
              2008...................................        158,151
              2009...................................        147,919
              2010...................................         90,227
              2011...................................         44,951
              2012...................................         42,069
                                                           ---------
                                                          $  898,614
                                                           =========


NOTE N.     Business Interruption Insurance Claims

     Hurricane Ivan Claim.  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 half of 2005. The Company maintains  business  interruption  insurance
coverage for such circumstances.  During 2004 and 2005, the Company filed claims
with its insurance  providers for its estimated losses associated with Hurricane
Ivan.

     Based on a  settlement  agreement  between the  Company  and the  insurance
providers,  the  Company's  recoverable  business  interruption  loss related to
Hurricane Ivan through June 30, 2005 is $67.0 million. The Company recorded $7.6
million and $59.4 million of the claims in the fourth quarter of 2004 and in the
first half of 2005, respectively,  in interest and other income in the Company's
Consolidated  Statements of  Operations.  Through June 30, 2005, the Company had
received $14.7 million of partial payments from its insurance  providers related
to its Devils Tower claim. The Company expects to receive the remaining payments
from the insurance  providers  related to the Hurricane Ivan claims in the third
quarter of 2005.

     Fain Plant  Claim.  During May 2005,  the  Company  sustained  damages as a
result of a fire at its Fain gas plant in the West Panhandle  field. The damages
interrupted  production  from  mid-May  through  mid-July  of 2005.  The Company
maintains  business  interruption  insurance coverage for such circumstances and
has  filed  claims  with its  insurance  providers.  Based  on the  terms of the
insurance  coverage,  the Company  estimates  its  recoverable  losses since the
occurrence  of the  fire and  through  June 30,  2005 to be  approximately  $9.4
million,  which was  recorded  in  interest  and other  income in the  Company's
Consolidated Statements of Operations during the second quarter of 2005.

NOTE O.     Discontinued Operations

     During May 2005, the Company sold its interests in the Martin Creek, Conroy
Black and Lookout  Butte oil and gas  properties  in Canada for net  proceeds of
$197.5 million, resulting in a gain of $138.7 million.



                                       28




                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                  June 30, 2005
                                   (Unaudited)


     During the three and six months ended June 30, 2005, the Company recognized
income  from  discontinued  operations  of  $82.0  million  and  $87.0  million,
respectively,  as  compared  to $5.5  million  and  $8.7  million  for the  same
respective periods of 2004. The following table represents the components of the
Company's  discontinued  operations  for the three and six months ended June 30,
2005 and 2004:


                                                        Three months ended         Six months ended
                                                             June 30,                  June 30,
                                                      ----------------------    ---------------------
                                                         2005         2004         2005        2004
                                                      ----------   ---------    ---------   ---------
                                                                      (in thousands)
                                                                                
    Revenues and other income:
       Oil and gas..................................   $   7,608   $  11,173    $  17,878   $  21,030
       Gain on disposition of assets (a)............     138,661         -        138,661         -
                                                        --------    --------     --------    --------
                                                         146,269      11,173      156,539      21,030
                                                        --------    --------     --------    --------
    Costs and expenses:
       Oil and gas production.......................       2,230       3,325        4,694       6,836
       Depletion, depreciation and amortization (a).       1,848       2,222        4,402       4,532
       Exploration and abandonments (a).............          37          78          333         838
       General and administrative...................         132          54          132         108
                                                        --------    --------     --------    --------
                                                           4,247       5,679        9,561      12,314
                                                        --------    --------     --------    --------
    Income from discontinued operations
       before income taxes..........................     142,022       5,494      146,978       8,716
    Income tax provision:
       Current......................................      (2,869)        -         (2,869)        -
       Deferred (a).................................     (57,130)        -        (57,130)        -
                                                        --------    --------     --------    --------
    Income from discontinued operations.............   $  82,023   $   5,494    $  86,979   $   8,716
                                                        ========    ========     ========    ========
<FN>
- -------------
(a)  Represents the noncash  components of discontinued  operations  included in
     the Company's Consolidated Statements of Cash Flows.
</FN>


NOTE P.     Subsequent Events

     Gulf of Mexico - Shelf Properties.  The Company has entered into agreements
to sell  certain  properties  on the shelf of the Gulf of Mexico for proceeds of
approximately $80 million.  The sales are expected to close in the third quarter
of 2005.  The Company  expects that upon closing of these sales,  the results of
operations from these assets will be reflected as discontinued operations in its
future financial statements.

     Cosmopolitan  Unit.  The  Company  announced  that it acquired a 10 percent
working interest in the Cosmopolitan  Unit, located in the Cook Inlet of Alaska,
with the option to acquire up to an additional 40 percent  working  interest and
potentially assume operatorship after new 3-D seismic data has been acquired and
interpreted.  The Company's  interest is being acquired through its agreement to
pay a  disproportionate  share of future costs. The Company can elect to acquire
up  to  an  additional  40  percent  working   interest  by  paying  cash  or  a
disproportionate share of additional future costs.



                                       29




                        PIONEER NATURAL RESOURCES COMPANY



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

Financial and Operating Performance

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

     o      Excluding  production  from the  Company's  Canadian  Martin  Creek,
            Conroy Black  and Lookout  Butte  fields,  which  were sold  and are
            reflected  as discontinued  operations, average  daily sales volumes
            per BOE increased two percent during  the second  quarter of 2005 as
            compared to the second quarter of 2004.
     o      Oil and gas revenues  increased 28 percent during the second quarter
            of 2005 as compared to the second quarter of 2004 as a result of the
            increased  production  volumes and  increases in  worldwide  oil and
            Argentine and North American gas prices.
     o      Interest and  other income  increased  by $46.3  million during  the
            second quarter  of 2005  as compared to  the second quarter of 2004,
            primarily due to business  interruption insurance  claims related to
            Hurricane Ivan and the Fain gas plant fire of $44.1 million.
     o      Income from continuing  operations before  income taxes increased by
            77 percent  to $205.5 million during the second quarter of 2005 from
            $116.0 million during the second quarter of 2004.
     o      Net income increased to $185.6 million ($1.28 per diluted share) for
            the second  quarter of 2005,  as compared to $69.7 million ($.58 per
            diluted share) for the second quarter of 2004.
     o      The Company recognized  income from discontinued operations of $82.0
            million ($.56 per diluted share)  during the second  quarter of 2005
            as a result of the Canadian disposition.
     o      Net cash provided by operating activities increased by 26 percent to
            $332.6 million during the second quarter of 2005 from $264.7 million
            during the second quarter of 2004.
     o      Outstanding debt  decreased by  $991.2 million, or 42 percent, as of
            June 30,  2005  as compared  to debt  outstanding as of December 31,
            2004.
     o      The Company  sold a volumetric  production payment during April 2005
            for net proceeds of $300.4 million.
     o      The Company's 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.

2005 Outlook

     Third quarter.  Based on current estimates,  the Company expects that third
quarter 2005  production  will average  160,000 to 175,000 BOEPD.  This range is
lower than the second quarter average and reflects the Harrier field having been
fully  produced,  the resumption of production  from the West Panhandle field in
mid-July  and the typical  variability  in the timing of oil cargo  shipments in
South Africa, Argentina and Tunisia.

     Third quarter production costs (including  production and ad valorem taxes)
are  expected  to average  $6.75 to $7.25 per BOE based on current  NYMEX  strip
prices for oil and gas. The  increase  over the prior  quarter is primarily  the
result of lower  anticipated  third quarter  production from lower per unit cost
Gulf of Mexico fields,  higher commodity  prices,  and, to a lesser extent,  the
retention  of a full quarter of operating  costs  associated  with the third VPP
volumes sold in April. Depreciation, depletion and amortization ("DD&A") expense
is expected to average $8.75 to $9.25 per BOE.

     Total exploration and abandonment  expense is expected to be $40 million to
$70 million and includes plans to drill two deepwater Gulf of Mexico exploration
wells (Clipper and Paladin) and one well in the Anaguid Block in Tunisia and the
acquisition of additional 3-D seismic data. General and  administrative  expense
is expected to be $28 million to $30 million. Interest expense is expected to be
$26 million to $29  million,  and  accretion  of  discount  on asset  retirement
obligations is expected to be $2 million to $3 million.

     The Company's third quarter  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 $10 million to $20 million that are principally  related to
Argentine,  Canadian and Tunisian income taxes and nominal  alternative  minimum
tax in  the  U.S.  Other  than in  Argentina,  Canada and  Tunisia,  the Company

                                       30




                        PIONEER NATURAL RESOURCES COMPANY


continues to benefit from the  carryforward  of net  operating  losses and other
positive tax attributes.

     2005 update.  Based on current  estimates,  the Company  expects that total
2005  production  will  be 63  MMBOE  to 65  MMBOE,  excluding  production  from
discontinued operations.  The new range reflects the production impact of closed
and  pending  asset  sales in  Canada,  East  Texas and the shelf of the Gulf of
Mexico,  the Company's  third VPP  transaction,  production lost from the Devils
Tower and West  Panhandle  fields  which were  covered by business  interruption
insurance, pipeline capacity limitations delaying the ramp up of production from
the Raton Basin and the impact of weather  and rig  shortages  in the  deepwater
Gulf of Mexico.  The new range also reflects the impact of  directives  from the
Minerals Management Service which required that uphole  recompletions  scheduled
for Devils Tower wells be postponed to maximize the recovery of oil and gas from
less prolific deeper zones.

     Pioneer  has  increased  its  2005  capital  budget  for   development  and
exploratory  activities and land additions by approximately $150 million to $1.1
billion. The increase  encompasses  expenditures related to Pioneer's success in
extending its acreage positions in West Africa, the U.S. onshore Gulf Coast, the
Rocky  Mountains,  Alaska and Canada,  adding a five-well Gulf of Mexico shallow
shelf exploration program and an increase in drilling in the Spraberry field and
the Horseshoe Canyon coal bed methane play in Canada.  The increased budget also
reflects the rising costs  associated  with drilling and  completion  activities
given higher  commodity  prices.  The increased  capital  budget  excludes costs
associated with recent acquisitions.

Acquisitions, Operations and Drilling Highlights

     During the first six months of 2005, the Company incurred $551.6 million in
finding  and  development   costs  including   $302.0  million  for  development
activities,  $165.3  million for  exploration  activities  and $84.3 million for
acquisitions.   The  majority  of  the  Company's  development  and  exploration
expenditures   were  spent  on  drilling  wells,   acquiring  seismic  data  and
constructing  infrastructure associated with successful drilling activities. The
following tables summarize the Company's  development and  exploration/extension
drilling activities for the six months ended June 30, 2005:


                                                           Development Drilling
                               -------------------------------------------------------------------------
                               Beginning Wells      Wells     Successful    Unsuccessful    Ending Wells
                                 in Progress        Spud         Wells         Wells        In Progress
                               ---------------    --------    ----------    ------------    ------------
                                                                                    
United States...............          32              240          256              1              15
Argentina...................           6               43           35              1              13
Canada......................           2               28           26            -                 4
                                  ------           ------       ------         ------          ------
      Total Worldwide.......          40              311          317              2              32
                                  ======           ======       ======         ======          ======




                                                       Exploration/Extension Drilling
                               -------------------------------------------------------------------------
                               Beginning Wells      Wells     Successful    Unsuccessful    Ending Wells
                                 in Progress        Spud         Wells         Wells        In Progress
                               ---------------    --------    ----------    ------------    ------------
                                                                                
United States...............           9               10            8              3               8
Argentina...................           8                6           10              2               2
Canada......................          21               27           25              7              16
Africa......................           4                3            1              2               4
                                  ------           ------       ------         ------          ------
     Total Worldwide........          42               46           44             14              30
                                  ======           ======       ======         ======          ======




                                       31




                        PIONEER NATURAL RESOURCES COMPANY


     The following table summarizes by geographic area the Company's finding and
development costs incurred,  excluding asset retirement obligations,  during the
first six months of 2005 and the total  wells  planned to be drilled  during the
year ending December 31, 2005:


                                       Property
                                  Acquisition Costs
                               -----------------------   Exploration   Development                 Wells
                                 Proved      Unproved       Costs         Costs        Total      Planned
                               ----------   ----------   -----------   -----------   ----------   -------
                                                              (in thousands)
                                                                                  
United States:
    Gulf of Mexico...........  $     -      $   9,789    $   68,043    $   51,143    $  128,975        8
    Onshore Gulf Coast.......      3,293        7,042         6,706        23,923        40,964       16
    Permian Basin............     14,650          625           629        53,468        69,372      210
    Mid-Continent............        115          -              32        17,665        17,812       60
    Rocky Mountain...........         62          646         1,782        57,060        59,550      300
    Alaska...................        -         17,220        23,522         2,393        43,135        3
                                --------     --------     ---------     ---------     ---------    -----
                                  18,120       35,322       100,714       205,652       359,808      597
Argentina....................        -              5        14,518        45,380        59,903       90
Canada.......................       (145)       1,067        14,759        47,864        63,545      110
Nigeria......................        -         29,944        20,823           -          50,767        2
Tunisia......................        -            -           9,529         2,843        12,372        5
Other........................        -            -           4,959           270         5,229      -
                                --------     --------     ---------     ---------     ---------    -----
         Total Worldwide.....  $  17,975    $  66,338    $  165,302    $  302,009    $  551,624      804
                                ========     ========     =========     =========     =========    =====


     The  following  are  significant  events  that  occurred  during the second
quarter of 2005:

     Gulf of  Mexico  area.  Sidetrack  operations  for the  Raptor  field  were
successfully  completed  during the second quarter of 2005 with the well testing
at  approximately  30 million cubic feet per day. The Company owns a 100 percent
interest in the Raptor field.  Subsequent to June 30, 2005, recoverable reserves
from the Harrier field were fully produced, having produced 51 Bcf of cumulative
production on an investment of $112.0 million.

     The Company recognized  additional  business  interruption  recoveries from
Devils  Tower  and  Canyon   Express  of  $15.4   million  and  $19.3   million,
respectively, in the second quarter of 2005. See Note N of Notes to Consolidated
Financial  Statements included in "Item 1. Financial  Statements" for additional
information.

     The Company has been advised by the operator of the Canyon  Express  system
that sidetrack  operations  planned for the Aconcagua field later this year will
be postponed pending rig availability. The existing Aconcagua wells are expected
to reach  the end of their  productive  lives by the end of 2005 or early  2006;
therefore,  the Company now anticipates that the system will be shut-in once the
Camden Hill  recoverable  reserves are fully  produced  during the first half of
2006 unless a rig becomes available to drill the Aconcagua sidetrack wells.

     The Company has entered into  agreements to sell certain  properties on the
shelf of the Gulf of Mexico for proceeds of approximately $80 million. The sales
are expected to close in the third quarter of 2005. The Company's net production
from these properties averages approximately 3,200 BOEPD.

     Mid-Continent  area. The Company's Fain gas plant was shut in due to a fire
on May 15,  2005.  The  Company  completed  repairs and  resumed  operations  in
mid-July 2005. The shut-in resulted in a production loss of approximately 17,000
BOEPD. The Company has filed a business  interruption claim relating to the fire
and  recognized  $9.4 million of estimated  recoveries in the second  quarter of
2005. The Company expects  additional  business  interruption  recoveries in the
third  quarter  of 2005 of $9  million  to $10  million.  See Note N of Notes to
Consolidated Financial Statements included in "Item 1. Financial Statements" for
additional information.


                                       32




                        PIONEER NATURAL RESOURCES COMPANY


     Permian Basin and Gulf Coast areas. In July 2005, the Company completed the
purchase  of  approximately  70 MMBOE of  substantially  undeveloped  proved oil
reserves in the United  States  core areas of the Permian  Basin and South Texas
for  approximately  $177 million.  The assets being acquired  currently  produce
approximately 1,800 BOEPD and provide an estimated 800 undrilled locations.

     During  April 2005,  the Company  completed  the sale of certain East Texas
properties for net proceeds of  approximately  $25.2 million.  The Company's net
production from these properties averaged approximately 400 BOEPD.

     Canada.  During May 2005,  the Company  sold all of its  interests in three
non-strategic  Canadian  properties  in Martin  Creek,  Conroy Black and Lookout
Butte for net proceeds of $197.5  million.  The  Company's net  production  from
these  properties  averaged  approximately  3,000 BOEPD.  See Note O of Notes to
Consolidated Financial Statements included in "Item 1. Financial Statements".

     Gabon. In 2004, the Company canceled the development of the Olowi block due
to a substantial  increase in projected  development costs which resulted in the
project not offering  competitive  returns.  In the second  quarter of 2005, the
Company  announced an agreement to sell its shares in its  subsidiary  that owns
the interest in the Olowi block offshore Gabon for net proceeds of approximately
$49 million. As a result of this agreement,  the Company reversed its previously
recorded  tax  benefit of $27.3  million  associated  with the  decision to exit
Gabon.  Among the conditions to completing  this  transaction is the approval by
the government to an amendment to the production  sharing contract for the Olowi
block. The transaction is expected to close by the end of 2005.

     Nigeria.  A  partially-owned   subsidiary  of  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  subsidiary,  which  holds  a 51  percent
interest  in Block 320,  is owned 59 percent by the Company and 41 percent by an
unaffiliated  third party.  The Company plans to acquire 3-D seismic data during
the fourth quarter of 2005 and drill the first well in 2006.

     Sao Tome and Principe and Nigeria.  The Company was a successful  bidder to
conduct exploration  activities with a consortium of energy companies in Block 2
and in Block 3 of the Joint  Development  Zone in offshore Sao Tome and Principe
and Nigeria  pending  completion  of a  production  sharing  contract  and joint
operating agreement. The consortium was granted a 65 percent interest in Block 2
and a 25 percent  interest in Block 3. The Company expects to be the operator of
Block 2.

     Tunisia.  The Company  announced the June  completion of a successful  Nour
discovery  well  onshore  southern  Tunisia  in the  Adam  concession.  The well
initially produced approximately 7,000 gross BOEPD.

Results of Operations

     Oil and gas revenues.  Revenues from oil and gas operations  totaled $544.6
million  and $1.1  billion  for the three and six months  ended  June 30,  2005,
respectively,  as  compared to $424.8  million  and $850.4  million for the same
respective  periods of 2004. The revenue  increase during the three months ended
June 30, 2005, as compared to the same period of 2004,  was due to a two percent
increase  in  average  daily BOE sales  volumes,  a 27 percent  increase  in oil
prices,  a 28 percent  increase  in NGL prices and a 25 percent  increase in gas
prices,  including the effects of commodity price hedges.  The revenue  increase
during the six months  ended June 30,  2005,  as  compared to the same period of
2004, was due to a three percent increase in average daily BOE sales volumes,  a
22 percent  increase in oil prices, a 24 percent increase in NGL prices and a 20
percent increase in gas prices, including the effects of commodity price hedges.



                                       33




                        PIONEER NATURAL RESOURCES COMPANY


     The following  table provides  average daily sales volumes from  continuing
operations,  by geographic area and in total, for the three and six months ended
June 30, 2005 and 2004:


                                          Three months ended         Six months ended
                                               June 30,                   June 30,
                                       ----------------------    ----------------------
                                          2005         2004         2005         2004
                                       ---------    ---------    ---------    ---------
                                                                  
     Oil (Bbls):
       United States................      26,424       26,039       27,567       25,505
       Argentina....................       7,796        8,531        7,992        8,579
       Canada.......................         210           26          186           28
       Africa.......................      10,452       10,215       11,205       12,125
                                       ---------    ---------    ---------    ---------
       Worldwide....................      44,882       44,811       46,950       46,237
                                       =========    =========    =========    =========
     NGLs (Bbls):
       United States................      14,908       19,809       16,219       20,373
       Argentina....................       1,948        1,494        1,761        1,459
       Canada.......................         610          405          514          432
                                       ---------    ---------    ---------    ---------
       Worldwide....................      17,466       21,708       18,494       22,264
                                       =========    =========    =========    =========
     Gas (Mcf):
       United States................     553,803      536,109      546,086      531,870
       Argentina....................     135,188      122,326      132,783      110,072
       Canada.......................      36,710       24,868       35,448       24,420
                                       ---------    ---------    ---------    ---------
       Worldwide....................     725,701      683,303      714,317      666,362
                                       =========    =========    =========    =========
     Total (BOE):
       United States................     133,632      135,199      134,800      134,522
       Argentina....................      32,275       30,414       31,884       28,384
       Canada.......................       6,939        4,576        6,608        4,530
       Africa.......................      10,452       10,215       11,205       12,125
                                       ---------    ---------    ---------    ---------
       Worldwide....................     183,298      180,404      184,497      179,561
                                       =========    =========    =========    =========


     On a quarter-to-quarter  comparison,  average daily sales volumes increased
by six  percent in  Argentina,  by 52  percent  in Canada and by two  percent in
Africa, while average daily sales volumes decreased by one percent in the United
States. On a year-to-date  comparison,  average daily sales volumes increased by
12 percent in Argentina  and by 46 percent in Canada,  while average daily sales
volumes decreased by eight percent in Africa and remained constant in the United
States.

     Average daily sales volumes in the United States was flat  principally  due
to new production from the properties  acquired in the Evergreen merger,  offset
by  declining  production  in the Gulf of Mexico  and  downtime  at the Fain gas
plant.

     Canadian average daily sales volumes from continuing  operations  increased
due to new production from Canadian  properties acquired in the Evergreen merger
and production from new wells drilled during the winter drilling season.

     Argentine  average daily sales  volumes  increased as a result of increased
wells drilled and market demand.  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 and gas prices have increased.

     In Africa,  production  is down in South  Africa  due to normal  production
declines, but is partially offset by continued growth in Tunisia production.



                                       34




                        PIONEER NATURAL RESOURCES COMPANY


     The following  table  provides  average  daily sales volumes  recorded from
discontinued  operations  during the three and six month  periods ended June 30,
2005 and 2004:


                                          Three months ended         Six months ended
                                               June 30,                   June 30,
                                       ----------------------    ----------------------
                                          2005         2004         2005         2004
                                       ---------    ---------    ---------    ---------
                                                                  
       Canada:
         Oil (Bbls)...............          45           69           57           69
         NGLs (Bbls)..............         264          511          224          549
         Gas (Mcf)................      10,472       16,425       12,910       16,236
         Total (BOE)..............       2,054        3,318        2,433        3,324


     The  following  table  provides  average  reported  prices from  continuing
operations,  including the results of hedging  activities,  and average realized
prices from continuing operations,  excluding the results of hedging activities,
by  geographic  area and in total,  for the three and six months  ended June 30,
2005 and 2004:


                                          Three months ended         Six months ended
                                               June 30,                   June 30,
                                       ----------------------    ----------------------
                                          2005         2004         2005         2004
                                       ---------    ---------    ---------    ---------
                                                                  
   Average reported prices:
      Oil (per Bbl):
        United States...............   $   29.36    $   27.63     $   29.15   $   27.16
        Argentina...................   $   34.54    $   20.13     $   33.12   $   24.05
        Canada......................   $   35.22    $   45.79     $   41.97   $   45.54
        Africa......................   $   51.84    $   35.13     $   47.82   $   32.98
        Worldwide...................   $   35.52    $   27.92     $   34.33   $   28.12
      NGLs (per Bbl):
        United States...............   $   28.39    $   22.29     $   27.18   $   21.90
        Argentina...................   $   30.84    $   27.22     $   30.62   $   28.17
        Canada......................   $   41.18    $   27.31     $   39.89   $   27.53
        Worldwide...................   $   29.11    $   22.73     $   27.86   $   22.42
      Gas (per Mcf):
        United States...............   $    6.39    $    5.15     $    6.17   $    5.13
        Argentina...................   $     .88    $     .65     $     .88   $     .62
        Canada......................   $    6.17    $    3.35     $    6.07   $    3.30
        Worldwide...................   $    5.35    $    4.28     $    5.18   $    4.31
   Average realized prices:
      Oil (per Bbl):
        United States...............   $   51.32    $   36.30     $   48.61   $   34.55
        Argentina...................   $   34.54    $   24.41     $   33.12   $   27.56
        Canada......................   $   35.22    $   45.79     $   41.97   $   45.54
        Africa......................   $   51.84    $   35.80     $   47.82   $   33.55
        Worldwide...................   $   48.45    $   33.93     $   45.76   $   33.00
      NGLs (per Bbl):
        United States...............   $   28.39    $   22.29     $   27.18   $   21.90
        Argentina...................   $   30.84    $   27.22     $   30.62   $   28.17
        Canada......................   $   41.18    $   27.31     $   39.89   $   27.53
        Worldwide...................   $   29.11    $   22.73     $   27.86   $   22.42
      Gas (per Mcf):
        United States...............   $    6.90    $    5.72     $    6.51   $    5.52
        Argentina...................   $     .88    $     .65     $     .88   $     .62
        Canada......................   $    6.17    $    5.07     $    6.08   $    4.99
        Worldwide...................   $    5.74    $    4.79     $    5.44   $    4.69




                                       35




                        PIONEER NATURAL RESOURCES COMPANY


     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 three and six months
ended June 30, 2005, the Company's  commodity price hedges decreased oil and gas
revenues by $78.7 million and $131.0 million, respectively, as compared to $56.1
million and $86.9 million during the same respective periods in 2004. See Note G
of Notes to  Consolidated  Financial  Statements  included in "Item 1. Financial
Statements" for specific information  regarding the Company's hedging activities
during the three and six months ended June 30, 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 in 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  Annual Report on Form 10-K for the year ended December
31, 2004. At the present time, no specific  predictions can be made about future
commodity prices in Argentina.  The Company has seen recent improvements in spot
oil and gas prices in certain areas of Argentina;  however,  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 and six
months ended June 30, 2005 was $47.9 million and $76.2 million, respectively, as
compared to $1.6  million and $3.3  million for the same  respective  periods of
2004.  The increase in interest  and other income  during the three months ended
June 30, 2005,  as compared to the same period in 2004, is  attributable  to the
recognition of $44.1 million of business interruption insurance claims, of which
$34.7 million related to Hurricane Ivan and $9.4 million to the Fain plant fire.
The increase in interest  and other income  during the six months ended June 30,
2005, as compared to the same period in 2004, is attributable to the recognition
of $68.8  million in  business  interruption  insurance  claims,  of which $59.4
million  relates to Hurricane  Ivan and $9.4 million to the Fain plant fire. See
Note N 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
$108.0 million and $219.5 million during the three and six months ended June 30,
2005, respectively, as compared to $81.2 million and $155.9 million for the same
respective  periods of 2004. 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 31 percent  and 38 percent  during the three and six months  ended
June 30, 2005, respectively,  as compared to the same respective periods in 2004
primarily due to (i) an increase in production  and ad valorem taxes as a result
of higher commodity prices, (ii) higher Canadian gas transportation  fees, (iii)
the retention of operating costs related to VPP volumes sold (approximately $.25
per BOE and $.20 per BOE during the three and six  months  ended June 30,  2005,
respectively),  (iv) new  production  added  from  the  Evergreen  merger  which
represent  relatively  higher  operating  cost  properties  and (v) increases in
equipment and service costs associated with rising commodity prices.



                                       36




                        PIONEER NATURAL RESOURCES COMPANY


     The  following  tables  provide  the  components  of  the  Company's  total
production  costs per BOE from continuing  operations and total production costs
per BOE by  geographic  area from  continuing  operations  for the three and six
months ended June 30, 2005 and 2004:


                                          Three months ended         Six months ended
                                               June 30,                   June 30,
                                       ----------------------    ----------------------
                                          2005         2004         2005         2004
                                       ---------    ---------    ---------    ---------
                                                                  

  Lease operating expenses.........    $    4.75    $    3.62    $    4.84    $    3.46
  Taxes:
     Ad valorem....................          .59          .48          .59          .48
     Production....................          .83          .60          .81          .60
  Workover costs...................          .30          .24          .33          .23
                                        --------     --------     --------     --------
        Total production costs.....    $    6.47    $    4.94    $    6.57    $    4.77
                                        ========     ========     ========     ========




                                          Three months ended         Six months ended
                                               June 30,                   June 30,
                                       ----------------------    ----------------------
                                          2005         2004         2005         2004
                                       ---------    ---------    ---------    ---------
                                                                  
  Total production costs:
     United States.................    $    6.82    $    4.89    $    6.93    $    4.71
     Argentina.....................    $    3.03    $    3.04    $    3.02    $    2.94
     Canada........................    $   13.50    $   10.15    $   14.72    $   10.51
     Africa........................    $    8.02    $    8.98    $    7.59    $    7.63
     Worldwide.....................    $    6.47    $    4.94    $    6.57    $    4.77


     Depletion,  depreciation and amortization expense. The Company's total DD&A
expense was $8.82 and $9.01 per BOE for the three and six months  ended June 30,
2005,  respectively,  as compared to $8.56 and $8.41 during the same  respective
periods of 2004.  Depletion expense,  the largest component of DD&A expense, was
$8.51 and $8.71 per BOE during the three and six months ended June 30, 2005,  as
compared  to $8.39 and $8.24  during the same  respective  periods in 2004.  The
increase in per BOE depletion expense during the three and six months ended June
30, 2005, as compared to the same  respective  periods in 2004, is primarily due
to relatively higher per BOE cost basis Rocky Mountain area production  acquired
in the  Evergreen  merger  and a  higher  depletion  rate  for the  Hugoton  and
Spraberry  fields  as a  result  of the  VPP  volumes  sold.  Additionally,  the
Company's  depletion  expense per BOE increased in Argentina due to net year-end
downward  reserve  revisions  associated  with negative well  performance in the
Portezuelo  Oeste gas field,  increased in Tunisia due to the  Company's  proved
reserves  being reduced as a result of the Company's  interest in the Adam block
being reduced to 24 percent from 28 percent in accordance  with the terms of the
concession  and  decreased  in  South  Africa  as a  result  of  upward  reserve
revisions.

       The following table provides depletion expense per BOE from continuing
operations by geographic area for the three and six months ended June 30, 2005
and 2004:


                                          Three months ended         Six months ended
                                               June 30,                   June 30,
                                       ----------------------    ----------------------
                                          2005         2004         2005         2004
                                       ---------    ---------    ---------    ---------
                                                                  
  Depletion expense:
     United States..................   $    8.84    $    8.62    $    9.09    $    8.31
     Argentina......................   $    6.77    $    5.35    $    6.55    $    5.30
     Canada.........................   $   11.72    $   12.41    $   12.07    $   12.53
     Africa.........................   $    7.63    $   12.64    $    8.20    $   12.75
     Worldwide......................   $    8.51    $    8.39    $    8.71    $    8.24




                                       37




                        PIONEER NATURAL RESOURCES COMPANY


     Exploration,  abandonments, geological and geophysical costs. The following
table provides the Company's  geological and geophysical costs,  exploratory dry
hole expense,  lease  abandonments and other  exploration  expense by geographic
area from continuing operations for the three and six months ended June 30, 2005
and 2004:


                                                                                   Africa
                                                  United                             and
                                                  States    Argentina    Canada     Other      Total
                                                  -------   ---------    -------   -------   --------
                                                                     (in thousands)
                                                                              
       Three months ended June 30, 2005:
         Geological and geophysical costs......   $13,635    $ 2,450     $ 1,878   $10,449   $ 28,412
         Exploratory dry holes.................    16,495        180         565       943     18,183
         Leasehold abandonments and other......     2,330      3,220         239       -        5,789
                                                   ------     ------      ------    ------    -------
                                                  $32,460    $ 5,850     $ 2,682   $11,392   $ 52,384
                                                   ======     ======      ======    ======    =======
       Three months ended June 30, 2004:
         Geological and geophysical costs......   $ 9,338    $ 7,538     $   688   $ 3,113   $ 20,677
         Exploratory dry holes.................       895        287         386    15,635     17,203
         Leasehold abandonments and other......     1,601         22         102       -        1,725
                                                   ------     ------      ------    ------    -------
                                                  $11,834    $ 7,847     $ 1,176   $18,748   $ 39,605
                                                   ======     ======      ======    ======    =======
       Six months ended June 30, 2005:
         Geological and geophysical costs......   $39,357    $ 4,125     $ 2,864   $19,859   $ 66,205
         Exploratory dry holes.................    28,011      1,069       3,229    12,499     44,808
         Leasehold abandonments and other......     4,571      3,240         330       319      8,460
                                                   ------     ------      ------    ------    -------
                                                  $71,939    $ 8,434     $ 6,423   $32,677   $119,473
                                                   ======     ======      ======    ======    =======
       Six months ended June 30, 2004:
         Geological and geophysical costs......   $25,107    $10,668     $ 1,835   $ 4,846   $ 42,456
         Exploratory dry holes.................    37,863        692       7,915    24,319     70,789
         Leasehold abandonments and other......     2,420         37       3,642         7      6,106
                                                   ------     ------      ------    ------    -------
                                                  $65,390    $11,397     $13,392   $29,172   $119,351
                                                   ======     ======      ======    ======    =======


     Significant  components of the Company's dry hole expense during the second
quarter of 2005  included  $7.3  million of  carryover  costs from the  previous
quarter  associated  with an  unsuccessful  well in the Falcon  Corridor and the
write-off of previously  suspended United States exploratory wells.  Significant
components  of the  Company's  dry hole  expense  during  the first half of 2005
included  $16.3  million  associated  with an  unsuccessful  well in the  Falcon
Corridor,  $9.5 million  associated  with an  unsuccessful  Nigerian well,  $3.5
million on an unsuccessful  well on the Company's El Hamra permit in Tunisia and
other various United States  exploratory  wells.  During the first half of 2005,
the Company completed and evaluated 58 exploration/extension  wells, 44 of which
were successfully completed as discoveries.  During the same period in 2004, the
Company completed and evaluated 66 exploration/extension wells, 37 of which were
successfully completed as discoveries.

     General and administrative expense.  General and administrative expense for
the  three and six  months  ended  June 30,  2005 was  $29.2  million  and $58.8
million, respectively, as compared to $17.1 million and $35.4 million during the
same  respective  periods in 2004.  The increases in general and  administrative
expense are 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 three and six months ended June 30,
2005, as compared to the same respective periods of 2004.

     Interest expense.  Interest expense was $30.2 million and $63.5 million for
the three and six months ended June 30, 2005,  as compared to $21.4  million and
$43.0  million for the same  respective  periods in 2004.  The weighted  average
interest rates on the Company's  indebtedness for the three and six months ended
June 30, 2005 was 6.4 percent and 6.2 percent,  respectively, as compared to 5.2
percent for each of the same respective  periods in 2004,  including the effects
of interest rate derivatives.  The increase in interest expense during the three
months  ended  June 30,  2005,  as  compared  to the same  period  of 2004,  was
primarily  due to increased  average  borrowings  under the  Company's  lines of
credit,  primarily as a result of the cash portion of the consideration  paid in
the Evergreen  merger,  a $4.9 million  decrease in the amortization of interest
rate hedge gains, the assumption of $300 million of notes in connection with the
Evergreen  merger and higher  interest  rates in 2005.  The increase in interest
expense during  the six  months ended  June 30,  2005,  as  compared to the same

                                       38




                        PIONEER NATURAL RESOURCES COMPANY


period of 2004,  was primarily  due to increased  average  borrowings  under the
Company's  lines of  credit,  primarily  as a result of the cash  portion of the
consideration  paid in the  Evergreen  merger,  a $9.9  million  decrease in the
amortization  of  interest  rate  hedge  gains,  a  $1.2  million   decrease  in
capitalized  interest as the Company completed its major development projects in
the Gulf of Mexico,  the assumption of $300 million of notes in connection  with
the Evergreen merger and higher interest rates in 2005.

     Other expenses.  Other expenses for the three and six months ended June 30,
2005 were $17.6  million and $29.3  million,  respectively,  as compared to $8.3
million and $8.5 million for the same  respective  periods in 2004. The increase
in other  expenses  during the three months ended June 30, 2005,  as compared to
the same period of 2004, is primarily attributable to a $7.3 million loss on the
redemption of $32.4 million  principal  amount of the Company's  9-5/8% Notes, a
$2.9 million  increase in hedge  ineffectiveness  and a $2.1 million increase in
legal and environmental  accruals. The increase in other expenses during the six
months ended June 30, 2005, as compared to the same period of 2004, is primarily
attributable to the aforementioned $7.3 million loss on bond redemptions, a $9.6
million increase in hedge  ineffectiveness  and a $4.9 million increase in legal
and environmental accruals.

     Income tax provision.  During the three and six months ended June 30, 2005,
the  Company  recognized  income tax  provisions  of $102.0  million  and $153.8
million,  respectively,  as compared to $51.8  million and $91.5 million for the
same  respective  periods  in 2004.  The  Company's  effective  tax rate of 49.6
percent and 45.6  percent  during the three and six months  ended June 30, 2005,
respectively,  is higher  than the  combined  United  States  federal  and state
statutory rate of approximately 36.5 percent primarily due to:

     o    Reversal of the $27.3 million tax benefit recorded principally in  the
          third  quarter  of  2004  as  a  result  of  the  cancellation  of the
          development  of the Olowi  block and  the Company's  decision to  exit
          Gabon.  Reversal  of  the  tax  benefit  is  the result  of signing an
          agreement in June  2005 to  sell  its shares  in the  subsidiary  that
          owns the interest in the Olowi block which  makes it more  likely than
          not that  the Company  will not  realize the  originally recorded  tax
          benefit.
     o    Recording of  approximately  $3.2 million of taxes associated with the
          repatriation  of  foreign  earnings  pursuant  to  the  American  Jobs
          Creation Act of 2004 ("AJCA").
     o    Expenses for  unsuccessful well  costs in  foreign locations where the
          Company receives no expected income tax benefits.
     o    Foreign tax rates.
     o    Statutes that differ from those in the United States.

     See Note E of Notes to Consolidate  Financial  Statements included in "Item
1.  Financial  Statements"  for additional  information  regarding the Company's
income taxes.

     Discontinued  operations.  During the three and six  months  ended June 30,
2005,  the Company  recognized  income  from  discontinued  operations  of $82.0
million and $87.0  million,  respectively,  as compared to $5.5 million and $8.7
million for the same  respective  periods of 2004. The amounts for the three and
six months ended June 30, 2005 include a gain on disposition of assets of $138.7
million and income tax provisions of $60.0 million.

     The  Company's  high  effective  tax  rate  associated  with   discontinued
operations during the three and six months ended June 30, 2005 was primarily due
to:

     o    Approximately  $17.1 million  of United  States deferred tax provision
          triggered  by  the gain  recorded  on the  Canadian  divestiture.  The
          Canadian  gain caused  the  recharacterization of  Argentine  dividend
          income from prior years that was  previously  sheltered by  historical
          Canadian losses.
     o    Cash taxes of $2.9 million associated with the repatriation of foreign
          earnings under the provisions of the AJCA.


                                       39




                        PIONEER NATURAL RESOURCES COMPANY


     o    Offset in  part by  a decrease in the  Canadian valuation allowance of
          $12.4 million. The Canadian divestiture utilized a substantial portion
          of the Company's  Canadian  tax pools.  Consequently, the  Company has
          reassessed  the likelihood that  the remaining Canadian tax attributes
          will be utilized and  has determined  it is  now more  likely than not
          that it will be able to  utilize more of its tax pools than previously
          expected.

     For periods prior to the Canadian divestiture,  the Company's  discontinued
operations  reflect no tax  provisions  due to the Company  having  maintained a
valuation  allowance related to its Canadian  deferred tax assets.  During those
prior periods,  managements' expectation was that it was likely that the Company
would not realize its Canadian  deferred tax assets.  Therefore,  in  accordance
with  generally  accepted  accounting  principles,   portions  of  the  Canadian
valuation  allowance  were released only to the extent that Canadian  income was
recorded, thereby offsetting any tax provisions.

Capital Commitments, Capital Resources and Liquidity

     Capital  commitments.   The  Company's  primary  needs  for  cash  are  for
exploration, development and acquisition of oil and gas properties, repayment of
contractual   obligations   and  working   capital   obligations.   Funding  for
exploration, development and acquisition 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 and six months  ended  June 30,  2005
totaled $268.4 million and $494.6 million,  respectively,  as compared to $183.6
million and $350.8 million during the same  respective  periods of 2004.  During
the three and six month periods ended June 30, 2005, the Company's  additions to
oil and gas  properties  were funded by $332.6 million and $667.4 million of net
cash  provided  by  operating  activities,  respectively,  as compared to $264.7
million and $518.3 million during the same respective periods of 2004.

     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 June 30, 2005, the material  off-balance sheet
arrangements  and  transactions  that the Company has entered  into  include (i)
undrawn  letters of credit,  (ii)  operating  lease  agreements,  (iii) drilling
commitments, (iv) VPP obligations (to physically deliver volumes and pay related
lease  operating  expenses 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 six months ended June 30, 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.

     VPPs. 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 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  assignment  of the  Company's
obligations  under certain  derivative hedge  agreements.  Proceeds from the VPP
were initially used to pay down indebtedness.  The VPP sold 6.0 Bcf of Spraberry

                                       40




                        PIONEER NATURAL RESOURCES COMPANY


field gas volumes over an expected  32-month term that began in May 2005 and 6.2
MMBbls of Spraberry field oil volumes over an expected  five-year term beginning
in January 2006.

     See Note M of Notes to Consolidated  Financial Statements included in "Item
1.  Financial  Statements"  for additional  information  regarding the Company's
VPPs.

     Asset divestitures.  During May 2005, the Company sold all of its interests
in the Martin Creek,  Conroy Black and Lookout  Butte oil and gas  properties in
Canada for net proceeds of $197.5 million resulting in a gain of $138.7 million.
During April 2005,  the Company sold all of its  interests in certain East Texas
properties for  approximately  $25.2 million of net cash proceeds.  The net cash
proceeds from these divestitures were used to reduce outstanding indebtedness.

     The  Company  has  entered  into an  agreement  to sell its  shares  in the
subsidiary  that owns the  interest  in the Olowi block  offshore  Gabon for $49
million.  Among the conditions to completing this transaction is the approval by
the government to an amendment to the production  sharing contract for the Olowi
block.  The transaction is expected to close by the end of 2005. The Company has
entered into  agreements to sell certain  properties on the shelf of the Gulf of
Mexico for  proceeds of  approximately  $80  million.  The sales are expected to
close  in  the  third  quarter  of  2005.  The  net  cash  proceeds  from  these
divestitures, if consummated, will be used to fund future projects and/or reduce
outstanding indebtedness.

     Operating activities.  Net cash provided by operating activities during the
three and six months ended June 30, 2005 was $332.6 million and $667.4  million,
respectively,  as  compared to $264.7  million  and $518.3  million for the same
respective  periods in 2004.  The  increases  in net cash  provided by operating
activities  were  primarily  due to  increased  production  volumes  and  higher
commodity prices.

     Investing activities.  Net cash provided by investing activities during the
three and six months ended June 30, 2005 was $243.5 million and $605.4  million,
respectively,  as compared to net cash used in  investing  activities  of $192.2
million  and  $364.5  million  for the same  respective  periods  in  2004.  The
increases in net cash provided by investing activities were primarily due to (a)
$300.4 million and $892.7 million of net proceeds received from VPPs sold during
the three and six months ended June 30, 2005, respectively,  and (b) the sale of
the  Canadian  and East  Texas  assets  in the  second  quarter  of 2005 for net
proceeds of $222.7 million.

     Financing  activities.  Net cash used in  financing  activities  during the
three and six months  ended June 30, 2005 was $536.2  million and $1.2  billion,
respectively,  as compared to $66.1 million and $157.5  million  during the same
respective periods in 2004. During the three and six months ended June 30, 2005,
the Company had net  repayments on long-term  debt of $444.3  million and $997.3
million,  respectively,  as compared to $46.0 million and $136.0  million during
the same respective periods 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 paid
$14.3 million of aggregate  dividends during April 2005. Future dividends are at
the discretion of the Company's  board of directors,  and the 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  utilized unused borrowing  capacity under its 364-Day
Credit Agreement to fund these financing activities.

     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. During the three and six months ended June 30, 2005, the
Company  expended  $85.4 million to acquire 2.1 million shares of treasury stock
and  $237.3   million  to  acquire  5.9  million   shares  of  treasury   stock,
respectively.  Based on current expectations,  the Company intends to expend the
remaining $62.7 million authorized under the share repurchase program during the
third quarter 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

                                       41




                        PIONEER NATURAL RESOURCES COMPANY


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. There were no outstanding  borrowings under the lines
of  credit  as of  June  30,  2005.  Including  $49.3  million  of  undrawn  and
outstanding  letters of credit  under the lines of credit,  the Company had $1.1
billion of unused borrowing capacity as of June 30, 2005.

     Book capitalization and current ratio. The Company's book capitalization at
June  30,  2005  was  $4.0  billion,  consisting  of debt of  $1.4  billion  and
stockholders' equity of $2.6 billion.  Consequently,  the Company's debt to book
capitalization  decreased  to 35  percent  at June 30,  2005 from 46  percent at
December 31, 2004. The Company's ratio of current assets to current  liabilities
was .62 to 1.00 at June 30,  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  revenue as a
result of the VPPs.

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 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 half 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 value (a).......      (547,916)       (4,614)      (552,530)
       Contract maturities......................       165,358           -          165,358
       Contract terminations....................        33,403         4,614         38,017
                                                     ---------       -------      ---------
       Fair value of contracts outstanding
          as of June 30, 2005...................    $ (755,701)     $    -       $ (755,701)
                                                     =========       =======      =========
<FN>
- ---------------
(a)  At inception,  new derivative contracts entered into by the Company have no
     intrinsic value.
</FN>




                                       42




                        PIONEER NATURAL RESOURCES COMPANY


     Interest rate sensitivity.  The following table provides  information about
other  financial  instruments the Company was a party to as of June 30, 2005 and
that are sensitive to changes in interest rates. For debt obligations, the table
presents  maturities by 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 June 30, 2005. As of
June 30, 2005,  the Company had no  outstanding  balances due under its variable
rate credit facilities, nor was the Company a party to material derivatives that
would subject it to interest rate sensitivity.

                            Interest Rate Sensitivity
                      Debt Obligations as of June 30, 2005


                                Six months                                                                            Liability
                                  ending                     Year ending December 31,                               Fair Value at
                               December 31,   ------------------------------------------------------                  June 30,
                                   2005         2006       2007       2008       2009     Thereafter      Total         2005
                               ------------   --------   --------   --------   --------   ----------   ----------   -------------
                                                              (in thousands, except interest rates)
                                                                                            
Total Debt:
  Fixed rate principal
    maturities (a)...........  $    -         $    -     $ 32,075   $350,000   $    -     $1,119,169   $1,501,244    $1,637,935
    Weighted average
      interest rate (%)......       6.8            6.9        6.9        8.0        8.0          8.0
<FN>
- -------------
(a)  Represents  maturities  of principal  amounts  excluding  (i) debt issuance
     discounts and premiums and (ii) deferred fair value hedge gains and losses.
</FN>


     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 price as of June 30, 2005. As of June 30, 2005,  all of
the Company's oil and gas derivative financial instruments qualified as hedges.

     See Note G 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 or gas
prices.

                              Oil Price Sensitivity
              Derivative Financial Instruments as of June 30, 2005


                                             Six months                                              Liability
                                               ending          Year ending December 31,            Fair Value at
                                             December 31,    --------------------------------         June 30,
                                                2005           2006         2007        2008            2005
                                             -----------    ---------    ---------    ---------    -------------
                                                                                                   (in thousands)
                                                                                    
Oil Hedge Derivatives:
  Average daily notional Bbl volumes (a):
   Swap contracts..........................     27,000         10,000       13,000       17,000     $ (515,323)
    Weighted average fixed price
       per Bbl.............................   $  27.97      $   31.69    $   30.89    $   29.21
   Collar contracts........................        -            3,500          -            -        $ (21,894)
    Weighted average ceiling price
      per Bbl..............................   $    -        $   41.95    $     -      $     -
     Weighted average floor price
      per Bbl..............................   $    -        $   35.00    $     -      $     -
  Average forward NYMEX oil
      prices (b)...........................   $  60.58      $   62.60    $   61.10    $   59.79
<FN>
- ---------------
(a)  See Note G of Notes to Consolidated  Financial Statements included in "Item
     1. Financial  Statements" for hedge volumes and weighted  average prices by
     calendar quarter.
(b)  The  average  forward  NYMEX oil prices are based on July 29,  2005  market
     quotes.
</FN>


                                       43




                        PIONEER NATURAL RESOURCES COMPANY




                              Gas Price Sensitivity
              Derivative Financial Instruments as of June 30, 2005


                                             Six months                                           Liability
                                               ending          Year ending December 31,         Fair Value at
                                             December 31,    --------------------------------      June 30,
                                                2005          2006        2007        2008           2005
                                             -----------    --------    --------    --------    -------------
                                                                                                (in thousands)
                                                                                    
Gas Hedge Derivatives (a):
  Average daily notional MMBtu volumes (b):
   Swap contracts..........................     268,478       73,842      29,195       5,000     $ (215,082)
    Weighted average fixed price per MMBtu.   $    5.17     $   4.30    $   4.28    $   5.38
   Collar contracts........................         -         17,329         -           -       $   (3,402)
    Weighted average ceiling price
      per MMBtu............................   $     -       $   9.14    $    -      $    -
    Weighted average floor price
      per MMBtu............................   $     -       $   6.67    $    -      $    -
  Average forward NYMEX gas prices (c).....   $    8.07     $   8.23    $   7.80    $   7.42
<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 G of Notes to Consolidated  Financial Statements included in "Item
     1. Financial  Statements" for hedge volumes and weighted  average prices by
     calendar quarter.
(c)  The  average  forward  NYMEX gas prices are based on July 29,  2005  market
     quotes.
</FN>


Item 4.     Controls and Procedures

     Evaluation of disclosure controls and procedures. The Company's management,
with  the  participation  of  its  principal  executive  officer  and  principal
financial  officer,  have  evaluated,  as required by Rule  13a-15(b)  under the
Securities  Exchange Act of 1934 (the "Exchange Act"), the 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.


                                       44




                        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 J 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 J 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 June 30, 2005:



                                                                Total Number of Shares    Approximate Dollar
                                                                 (or Units) Purchased      Amount of Shares
                           Total Number of     Average Price      as Part of Publicly       that May Yet Be
                           Shares (or Units)   Paid per Share       Announced Plans         Purchased under
      Period                 Purchased (a)       (or Unit)            or Programs         Plans or Programs
      ------               -----------------   --------------   ----------------------   -------------------

                                                                                 
April 2005...............           3,375         $  44.16                     -
May 2005.................       1,313,688         $  38.42              1,300,000
June 2005................         845,820         $  42.79                829,000
                              -----------                             -----------
        Total............       2,162,883         $  40.14              2,129,000            $ 62,719,000
                              ===========                             ===========             ===========
<FN>
- -----------
(a)  Amounts include shares withheld to fund tax withholding on employees' stock
     awards for which restrictions have lapsed.
</FN>


     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.

Item 4.     Submission of Matters to a Vote of Security Holders

     The Company's  annual meeting of  stockholders  was held on May 11, 2005 in
Irving,  Texas.  At the  meeting,  two  proposals  were  submitted  for  vote of
stockholders  (as  described in the  Company's  Proxy  Statement  dated April 5,
2005). The following is a brief  description of each proposal and results of the
stockholders' votes.

     Election  of  Directors.  Prior  to the  meeting,  the  Company's  board of
directors  designated  four  nominees as Class II directors  with their terms to
expire at the annual  meeting  in 2008 when their  successors  are  elected  and
qualified. Messrs. Baroffio, Buchanan, Sheffield and Watson were, at the time of
such nomination and at the time of the meeting,  directors of the Company.  Each
nominee  was  elected  as a director  of the  Company,  with the  results of the
stockholder voting being as follows:



                                                       Authority                    Broker
                                           For         Withheld       Abstain     Non-Votes
                                       -----------     ----------     -------     ---------
                                                    
            James R. Baroffio          130,909,156        358,641        -            -
            Edison C. Buchanan         130,894,076        373,721        -            -
            Scott D. Sheffield         129,146,540      1,149,467        -            -
            Jim A. Watson              129,985,315        310,692        -            -


     In addition, the term of office for the following directors continued after
May 11, 2005: R. Hartwell Gardner,  James L. Houghton,  Jerry P. Jones, Linda K.
Lawson,  Andrew D. Lundquist,  Charles E. Ramsey, Jr., Mark S. Sexton and Robert
A. Solberg.


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                        PIONEER NATURAL RESOURCES COMPANY


     Ratification of selection of auditors.  The engagement of Ernst & Young LLP
as the Company's independent auditors for 2005 was submitted to the stockholders
for  ratification.   Such  election  was  ratified,  with  the  results  of  the
stockholder voting being as follows:


                                     
            For                         129,715,384
            Against                         527,932
            Abstain                          52,691
            Broker non-votes                    -


Item 6.     Exhibits

Exhibits

10.1 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).
10.2 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  (incorporated by reference to Exhibit 10.18 to the Company's
     Quarterly Report on Form 10-Q, File No. 1-13245,  filed with the SEC on May
     6, 2005).
31.1 Chief Executive Officer  certification  under Section 302 of Sarbanes-Oxley
     Act of 2002.
31.2 Chief Financial Officer  certification  under Section 302 of Sarbanes-Oxley
     Act of 2002.
32.1 Chief Executive Officer  certification  under Section 906 of Sarbanes-Oxley
     Act of 2002.
32.2 Chief Financial Officer  certification  under Section 906 of Sarbanes-Oxley
     Act of 2002.



                                       46




                       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:   August 4, 2005             By:       /s/ Richard P. Dealy
                                          -------------------------------------
                                          Richard P. Dealy
                                          Executive Vice President and Chief
                                          Financial Officer



Date:   August 4, 2005             By:       /s/ Darin G. Holderness
                                          -------------------------------------
                                          Darin G. Holderness
                                          Vice President and Chief
                                          Accounting Officer



                                       47





                       PIONEER NATURAL RESOURCES COMPANY


Exhibit Index
- -------------

 10.1     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).
 10.2     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  (incorporated by reference to Exhibit 10.18 to
          the Company's  Quarterly Report on Form 10-Q, File No. 1-13245,  filed
          with the SEC on May 6, 2005).
 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.


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