EXHIBIT 99.1


                                  NEWS RELEASE

                     Investor Relations Contact: Susan Spratlen   (972) 444-9001

                   Pioneer Reports First Quarter 2003 Results
                Increases Production 16% over Prior Year Quarter

Dallas,  Texas, April 29, 2003 -- Pioneer Natural Resources Company  ("Pioneer")
(NYSE:PXD) today announced financial and operating results for the quarter ended
March 31, 2003.

First Quarter Results

Pioneer  reported net income of $84.2 million,  or $0.71 per diluted share,  for
the first quarter of 2003. Results included a $15.4 million, or $0.13 per share,
benefit from the cumulative effect of change in accounting  principle related to
the  adoption of  Statement of Financial  Accounting  Standards  No. 143,  which
prescribes the accounting for future asset retirement obligations.  For the same
period  last year,  Pioneer  reported a net loss of $2.0  million,  or $0.02 per
share, which included a noncash charge of $5.4 million,  or $0.05 per share, for
the remeasurement of Argentine  peso-denominated net monetary assets.  Cash flow
from operations for the 2003 first quarter was $136.8 million  compared to $50.0
million for the same period in 2002.

Total first  quarter  2003 oil and gas sales  increased  16% from the prior year
quarter  to average  128,444  barrels  per day (BPD) on a barrel oil  equivalent
(BOE) basis. First quarter oil sales averaged 31,894 BPD and natural gas liquids
sales averaged  22,033 BPD. Gas sales in the first quarter  averaged 447 million
cubic feet per day (MMcfpd). Realized prices for oil and natural gas liquids for
the first quarter were $25.82 and $22.00 per barrel, respectively.  The realized
price for gas was $4.06 per thousand  cubic feet (Mcf),  and North  American gas
prices averaged $4.68 per Mcf.

First  quarter  production  costs of $5.54 per BOE were higher than  anticipated
primarily due to start-up  costs  associated  with the Canyon  Express  project.
Exploration  and  abandonment  costs of $35.9  million for the quarter  included
$10.4 million of geologic and geophysical expenses including seismic costs, $2.0
million of noncash  leasehold  abandonments  including  expired leases and $23.5
million of exploration costs.

For the same  quarter  last  year,  Pioneer  reported  oil sales of 34,541  BPD,
natural  gas liquids  sales of 21,539 BPD and gas sales of 328 MMcfpd.  Realized
prices for the 2002 first  quarter  were  $23.17 per barrel for oil,  $10.73 per
barrel for natural gas liquids and $2.47 per Mcf for gas.

Scott D. Sheffield, Chairman and CEO stated, "We've had a strong start for 2003.
Our Canyon Express gas project has reached full  production  rates, we initiated
production from our operated Falcon field ahead of schedule and under budget and
announced a successful  exploration  well and development  plan at Harrier,  our
first Falcon  satellite  discovery.  We also announced a discovery in Alaska and
are   encouraged  by  the  early   evaluation   work  we've  done  to  establish
commerciality."

"Our current daily  production is up  approximately  45% from 12 months ago with
just two of our five  large  projects  on stream,  and we look  forward to first
production  from the  other  three  projects  over the  next 12  months.  We are
evaluating several  discoveries and have an active exploration  program underway
to keep the pipeline of projects flowing at capacity."

Financial Outlook

The following  statements  are estimates  based on current  expectations.  These
forward-looking  statements  are subject to a number of risks and  uncertainties
which may cause the  Company's  actual  results  to differ  materially  from the
following  statements.  The last paragraph of this release  addresses certain of
the risks and uncertainties to which the Company is subject.







Second  quarter 2003  production is expected to average  150,000 to 165,000 BOEs
per day. Second quarter lease operating  expenses  (including  production and ad
valorem  taxes) are expected to average  $4.85 to $5.15 per BOE based on today's
NYMEX strip prices for oil and gas. Depreciation,  depletion and amortization is
expected  to increase  to $6.50 to $6.90 per BOE as a larger  proportion  of the
Company's  production is derived from higher cost Gulf of Mexico  fields.  Total
exploration  and  abandonment  expense  is  expected  to be $25  million  to $50
million, and general and administrative  expense is expected to be approximately
$14 million.  Interest  expense is expected to be $24 million to $26 million and
income taxes are expected to be  approximately  $5 million,  principally  due to
income taxes in Argentina and minimal alternative minimum tax in the U.S. as the
Company  benefits from the  carryforward of net operating losses in the U.S. and
Canada.

The Company's oil and gas hedges are outlined on the attached schedule.

The range of expected  daily  production for the second quarter is expanded as a
result of the  production  variability  inherent in bringing  high volume,  high
impact wells into an otherwise relatively stable production mix. Included in the
second  quarter  guidance  is a  reduction  in  net  Falcon  production  volumes
reflecting the one-eighth  royalty that becomes effective when the average NYMEX
gas price exceeds $4.10 per Mcf in any calendar year.

The Company is also widening the range of expected  2003  production to 55 to 60
million BOE to reflect the Falcon royalty and the heightened variability related
to high volume wells. The Falcon field is performing  better than expected,  and
the Harrier  discovery has the potential for early  start-up,  while first sales
from the Sable field are now expected in the third quarter.  With a full year of
production  from new fields  brought on in 2003 and the addition of at least two
large fields in late 2003 or early 2004, the Company  expects 2004 production to
range from 63 to 75 million BOE.

Earnings Conference Call

This  morning at 10:00 a.m.  Eastern,  investors  will have the  opportunity  to
listen to the  first  quarter  earnings  call and view a  presentation  over the
internet via  Pioneer's  website  located at  http://www.pioneernrc.com.  At the
website,   select   'INVESTOR'   at  the  top  of  the  page  and  then   choose
'Webcasts/Earnings  Calls'. To listen to the live call, please go to the website
early to register,  download and install any necessary audio software. For those
who cannot  listen to the live  broadcast,  a replay  will be  available  on the
website  shortly  after  the  call.  Alternately,  you may dial  (800)  946-0712
(confirmation  code:  245690)  to  listen  to the  conference  call and view the
accompanying  visual  presentation  at the Internet  address  above. A telephone
replay will be available by dialing (888) 203-1112: confirmation code: 245690.

Pioneer is a large  independent oil and gas  exploration and production  company
with operations in the United States, Canada, Argentina, South Africa, Gabon and
Tunisia.  Pioneer's  headquarters  are in Dallas.  For more  information,  visit
Pioneer's website at www.pioneernrc.com.

Financial statements and schedules attached.

Except for historical  information contained herein, the statements in this News
Release are forward-looking statements that are made pursuant to the Safe Harbor
Provisions of the Private  Securities  Litigation  Reform Act of 1995.  Forward-
looking  statements  and the  business  prospects of Pioneer  Natural  Resources
Company  are  subject  to a number  of risks  and  uncertainties  that may cause
Pioneer's  actual  results  in  future  periods  to differ  materially  from the
forward-looking  statements.  These risks and uncertainties include, among other
things,   volatility  of  oil  and  gas  prices,   product  supply  and  demand,
competition,   government  regulation  or  action,  foreign  currency  valuation
changes,  foreign government tax and regulation changes,  litigation,  the costs
and results of drilling and operations,  Pioneer'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  Pioneer's  10-K and 10-Q
Reports and other filings with the Securities and Exchange Commission.







                        PIONEER NATURAL RESOURCES COMPANY
                      CONDENSED CONSOLIDATED BALANCE SHEET
                                 (in thousands)
                                   (Unaudited)



                                                           March 31,      December 31,
                                                             2003             2002
                                                          -----------     -----------
ASSETS
                                                                    

Current assets:
   Cash and cash equivalents                              $     6,858     $     8,490
   Accounts receivable                                        125,836          98,222
   Inventories                                                 10,951          10,648
   Deferred income taxes                                       14,400          13,900
   Other current assets                                        26,500          15,833
                                                           ----------      ----------
        Total current assets                                  184,545         147,093
                                                           ----------      ----------
Property, plant and equipment, at cost:
   Oil and gas properties, using the successful efforts
     method of accounting                                   4,740,783       4,471,970
   Accumulated depletion, depreciation and amortization    (1,346,096)     (1,303,541)
                                                           ----------      ----------
                                                            3,394,687       3,168,429
                                                           ----------      ----------
Deferred income taxes                                          76,449          76,840
Other assets, net                                              66,726          62,754
                                                           ----------      ----------
                                                          $ 3,722,407     $ 3,455,116
                                                           ==========      ==========
LIABILITIES AND STOCKHOLDERS' EQUITY

Current liabilities:
   Accounts payable                                       $   161,098     $   124,774
   Interest payable                                            37,980          37,458
   Income taxes payable                                         1,452             -
   Other current liabilities                                  155,938         112,360
                                                           ----------      ----------
        Total current liabilities                             356,468         274,592
                                                           ----------      ----------
Long-term debt                                              1,767,650       1,668,536
Other noncurrent liabilities                                  174,445         128,331
Deferred income taxes                                          11,889           8,760
Stockholders' equity                                        1,411,955       1,374,897
                                                           ----------      ----------
                                                          $ 3,722,407     $ 3,455,116
                                                           ==========      ==========







                        PIONEER NATURAL RESOURCES COMPANY
                      CONSOLIDATED STATEMENTS OF OPERATIONS
                    (in thousands, except for per share data)
                                   (Unaudited)



                                                                      Three months ended
                                                                            March 31
                                                                   -------------------------
                                                                      2003           2002
                                                                   ----------     ----------
                                                                            
Revenues and other income:
   Oil and gas                                                     $  281,156     $  165,539
   Interest and other                                                   2,713          1,193
   Gain (loss) on disposition of assets, net                            1,426            (74)
                                                                    ---------      ---------
                                                                      285,295        166,658
                                                                    ---------      ---------
Costs and expenses:
   Oil and gas production                                              64,024         51,018
   Depletion, depreciation and amortization  - oil and gas             67,735         48,237
   Depletion, depreciation and amortization - other                     2,314          2,151
   Exploration and abandonments                                        35,867         21,120
   General and administrative                                          15,481         11,918
   Accretion of discount on asset retirement obligations                1,094            -
   Interest                                                            22,491         26,317
   Other                                                                5,178          8,266
                                                                    ---------      ---------
                                                                      214,184        169,027
                                                                    ---------      ---------
Income (loss) before income taxes and cumulative effect of
   change in accounting principle                                      71,111         (2,369)
Income tax (provision) benefit                                         (2,304)           410
                                                                    ---------      ---------
Income (loss) before cumulative effect of change in accounting
   principle                                                           68,807         (1,959)
Cumulative effect of change in accounting principle, net of tax        15,413            -
                                                                    ---------      ---------
Net income (loss)                                                  $   84,220     $   (1,959)
                                                                    =========      =========
Net income (loss) per share:
   Basic:
      Income (loss) before cumulative effect of change in
        accounting principle                                       $      .59     $     (.02)
      Cumulative effect of change in accounting principle,
        net of tax                                                        .13            -
                                                                    ---------      ---------
          Net income (loss)                                        $      .72     $     (.02)
                                                                    =========      =========
   Diluted:
      Income (loss) before cumulative effect of change in
        accounting principle                                       $      .58     $     (.02)
      Cumulative effect of change in accounting principle,
        net of tax                                                        .13             -
                                                                    ---------      ---------
          Net income (loss)                                        $      .71     $     (.02)
                                                                    =========      =========
Weighted average shares outstanding:
   Basic                                                              116,743        104,055
                                                                    =========      =========
   Diluted                                                            118,675        104,055
                                                                    =========      =========








                        PIONEER NATURAL RESOURCES COMPANY
                 CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
                                 (in thousands)
                                   (Unaudited)




                                                               Three months ended
                                                                     March 31,
                                                            -------------------------
                                                               2003           2002
                                                            ----------     ----------
                                                                     
Cash flows from operations:
   Net income (loss)                                        $   84,220     $   (1,959)
   Depletion, depreciation and amortization                     70,049         50,388
   Exploration expenses, including dry holes                    30,263         18,666
   Deferred income taxes                                           254           (684)
   (Gain) loss on disposition of assets, net                    (1,426)            74
   Accretion of discount on asset retirement obligations         1,094            -
   Interest related amortization                                (4,565)          (992)
   Commodity hedge related amortization                        (17,782)         6,680
   Cumulative effect of change in accounting principle,
     net of tax                                                (15,413)           -
   Other noncash items                                           4,733          6,304
   Changes in operating assets and liabilities:
      Accounts receivable                                      (25,967)       (13,721)
      Inventories                                                 (360)         2,239
      Other current assets                                      (7,824)            (7)
      Accounts payable                                           8,381        (14,456)
      Interest payable                                             522           (295)
      Income taxes payable                                       1,452            -
      Other current liabilities                                  9,158         (2,201)
                                                             ---------      ---------
Net cash provided by operating activities                      136,789         50,036
Net cash used in investing activities                         (239,481)       (38,772)
Net cash provided by (used in) financing activities            100,594         (8,065)
                                                             ---------      ---------
Net increase (decrease) in cash and cash equivalents            (2,098)         3,199
Effect of exchange rate changes on cash
   and cash equivalents                                            466           (776)
Cash and cash equivalents, beginning
   of period                                                     8,490         14,334
                                                             ---------      ---------
Cash and cash equivalents, end of period                    $    6,858     $   16,757
                                                             =========      =========








                        PIONEER NATURAL RESOURCES COMPANY
                        SUMMARY PRODUCTION AND PRICE DATA




                                                              Three months ended
                                                                   March 31,
                                                           ------------------------
                                                              2003          2002
                                                           ---------     ----------
                                                                   
Average Daily Production:
   Oil (Bbls) -                          U.S.                 24,086         24,305
                                         Argentina             7,673         10,126
                                         Canada                  135            110
                                                           ---------      ---------
                                         Total                31,894         34,541

   Natural gas liquids (Bbls) -          U.S.                 20,024         19,919
                                         Argentina             1,130            642
                                         Canada                  879            978
                                                           ---------      ---------
                                         Total                22,033         21,539

   Gas (Mcf) -                           U.S.                339,598        215,837
                                         Argentina            66,633         65,119
                                         Canada               40,876         46,780
                                                           ---------      ---------
                                         Total               447,107        327,736

Total Production:
   Oil (MBbls)                                                 2,870          3,109
   Natural gas liquids (MBbls)                                 1,983          1,939
   Gas (MMcf)                                                 40,240         29,496
   Equivalent barrels (MBOE)                                  11,560          9,963

Average Price*:
   Oil  (per Bbl) -                      U.S.              $   25.85      $   24.27
                                         Argentina         $   25.61      $   20.61
                                         Canada            $   31.81      $   17.55
                                         Average           $   25.82      $   23.17

   Natural gas liquids (per Bbl)  -      U.S.              $   21.63      $   10.70
                                         Argentina         $   24.27      $    8.97
                                         Canada            $   27.51      $   12.41
                                         Average           $   22.00      $   10.73

   Gas (per Mcf) -                       U.S.              $    4.72      $    3.05
                                         Argentina         $     .54      $     .68
                                         Canada            $    4.34      $    2.27
                                         Average           $    4.06      $    2.47
<FN>
- ---------------

* Average prices include the effects of commodity hedges.
</FN>








                        PIONEER NATURAL RESOURCES COMPANY
                            SUPPLEMENTAL INFORMATION
                                 (in thousands)
                                   (Unaudited)

     EBITDA and discretionary cash flow (as defined below) are presented herein,
and reconciled to the generally accepted  accounting  principle ("GAAP") measure
of net cash provided by operating  activities,  because of their wide acceptance
as financial  indicators of a company's  ability to internally fund  exploration
and   development   activities  and  to  service  or  incur  debt.   EBITDA  and
discretionary  cash flow should not be  considered as  alternatives  to net cash
provided  by  operating  activities,  net income  (loss) or income  (loss)  from
continuing  operations,  as defined by GAAP. EBITDA and discretionary  cash flow
should  also  not  be  considered  as  indicators  of  the  Company's  financial
performance,  as alternatives to cash flow, as measures of liquidity or as being
comparable to other similarly titled measures of other companies.



                                                                 Three months ended
                                                                      March 31,
                                                              -------------------------
                                                                 2003           2002
                                                              ----------     ----------
                                                                       

   Net income (loss)                                          $   84,220     $   (1,959)
   Depletion, depreciation and amortization                       70,049         50,388
   Exploration and abandonments                                   35,867         21,120
   Accretion of discount on asset retirement obligations           1,094            -
   Interest expense                                               22,491         26,317
   Income taxes                                                    2,304           (410)
   (Gain) loss on disposition of assets, net                      (1,426)            74
   Commodity hedge related amortization                          (17,782)         6,680
   Cumulative effect of change in accounting principle,
      net of tax                                                 (15,413)           -
   Other noncash items                                             4,733          6,304
                                                               ---------      ---------
       EBITDA *                                                  186,137        108,514

   Less:  Cash interest expense                                  (27,056)       (27,309)
         Current income taxes                                     (2,050)          (274)
                                                               ---------      ---------
         Discretionary cash flow **                              157,031         80,931

   Less: Cash operating exploration expense                       (5,604)        (2,454)
         Changes in operating assets and liabilities             (14,638)       (28,441)
                                                               ---------      ---------
   Net cash provided by operating activities                  $  136,789     $   50,036
                                                               =========      =========
<FN>
- -------------

*    "EBITDA"   represents   earnings   before   depletion,   depreciation   and
     amortization expense; impairment of oil and gas properties; exploration and
     abandonments;  interest  expense and accretion of discounts;  income taxes;
     gain  or  loss  on the  disposition  of  assets;  commodity  hedge  related
     amortization;  cumulative  effect of change in accounting  principle;  and,
     other noncash items.

**   Discretionary  cash flows equal  cash flows  from operations before working
     capital changes and before exploration and abandonments.

</FN>







                        PIONEER NATURAL RESOURCES COMPANY

                         SUPPLEMENTAL HEDGE INFORMATION
                              As of April 23, 2003


                            Open Oil Hedge Positions
                            ------------------------



                                           2003
                                ---------------------------
                                Second    Third     Fourth
                                Quarter   Quarter   Quarter     2004      2005
                                -------   -------   -------   -------   -------
                                                         

Daily oil production:
     Swap Contracts:
     Volume (Bbl)                21,659    18,043    14,000     9,000     5,000
     NYMEX price                $ 24.84   $ 24.43   $ 24.35   $ 22.96   $ 24.00




                            Open Gas Hedge Positions
                            ------------------------



                                             2003
                                 -----------------------------
                                 Second     Third      Fourth                            2006 &
                                 Quarter    Quarter    Quarter      2004       2005       2007
                                 --------   --------   --------   --------   --------   --------
                                                                      

Daily gas production:
     Swap Contracts:
     Volume (Mcf)                 230,000    230,000    230,000    230,000     60,000     20,000
     NYMEX price* (MMBtu)        $   3.85   $   3.85   $   3.85   $   4.05   $   4.20   $   3.75

     Collar Contracts:
     Volume (Mcf)                     -          -          -       45,000        -           -
     NYMEX price* (MMBtu):
        Ceiling                       -          -          -     $   6.80        -           -
        Floor                         -          -          -     $   4.00        -           -




           Deferred Gains (Losses) on Terminated Hedges (in thousands)
           -----------------------------------------------------------



                                             2003
                                 ------------------------------
                                 Second      Third     Fourth
                                 Quarter    Quarter    Quarter      2004       2005     Thereafter
                                 --------   --------   --------   --------   --------   ----------
                                                                      

Commodity hedge gains**          $ 18,167   $ 17,807   $ 17,136   $ 43,865   $  1,249     $   -
Debt hedge gains (losses)***        5,540      4,700      4,131     11,113      4,196        (145)
                                  -------    -------    -------    -------    -------      ------
     Total deferred gains
       (losses)                  $ 23,707   $ 22,507   $ 21,267   $ 54,978   $  5,445     $  (145)
                                  =======    =======    =======    =======    =======      =======
<FN>
- ---------------

*    Approximate, based on historical differentials to index prices.

**   Deferred  commodity  hedge gains will be  amortized as increases to oil and
     gas revenues during the indicated future periods.

***  Deferred  debt hedge  gains will be  amortized  as  decreases  to  interest
     expense during the indicated  future periods and deferred debt hedge losses
     will be amortized as increases  to interest  expense  during the  indicated
     future periods.
</FN>