EXHIBIT 99.1
                                  NEWS RELEASE

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

                      Pioneer Reports First Quarter Results

Dallas,  Texas, April 26, 2001 -- Pioneer Natural Resources Company  ("Pioneer")
(NYSE:PXD)  (TSE:PXD)  today announced  financial and operating  results for the
quarter ended March 31, 2001.

First Quarter 2001 Results

Pioneer  reported net income of $67.9  million or $0.68 per share,  on a diluted
basis,  for the first quarter of 2001.  First quarter net income included a $7.3
million or $0.07 per share gain on the disposition of assets and an $8.8 million
or $0.09 per share  mark-to-market  charge related to derivatives not treated as
hedges.  For the same period  last year,  Pioneer  reported  net income of $14.8
million  or $0.15 per  share,  which  included  a gain on sale of assets of $8.4
million or $0.08 per share and a $13.5 million or $0.13 per share mark-to-market
charge related to derivatives  not treated as hedges.  Cash flow from operations
for the 2001 first quarter was $131.7 million  compared to $47.2 million for the
first quarter of 2000.

During  the  quarter  Pioneer  reduced  long-term  debt  by  $28.5  million  and
repurchased  0.4 million  common shares at an average price of $16.75 per share.
On March 31, 2001, the Company had 98.2 million common shares outstanding.

First  quarter oil sales  averaged  35,140  barrels  per day (BPD),  natural gas
liquid  sales  averaged  20,426 BPD and natural gas sales  averaged  333 million
cubic feet per day (MMcfpd). As expected,  first quarter natural gas liquids and
natural  gas sales were down as  compared  to the fourth  quarter of 2000 due to
several  factors.  Pioneer elected not to recover ethane from United States Mid-
continent gas during  January to raise the MMBtu  content and price  realization
per thousand  cubic feet (Mcf) of natural gas. As a  consequence,  U.S.  liquids
production  was reduced by  approximately  1,200 BPD for the days  during  which
ethane was not  recovered.  Severe  weather  negatively  impacted  United States
Mid-continent  production during January. Natural gas production from the Tierra
del Fuego area in  Argentina  continued  to be lower than  normal as a result of
increased  availability of hydroelectric power and unscheduled plant downtime at
a  large  gas  purchaser.  In the  Neuquen  Basin  in  Argentina,  unanticipated
compressor maintenance  negatively impacted first quarter gas production.  On an
oil equivalent basis, sales averaged 111,014 BPD. Realized prices (including the
effects of commodity price hedges) for oil and natural gas liquids for the first
quarter were $25.03 and $22.71 per barrel, respectively.  The realized price for
natural gas was $4.58 per Mcf.

First quarter  production costs averaged $5.59 per barrel oil equivalent  (BOE),
increasing 11% over the prior quarter, primarily due to higher production and ad
valorem taxes and field fuel costs resulting from higher gas prices. Exploration
and  abandonment  costs of $23 million  for the  quarter  included $9 million of
geologic and geophysical  costs  including  seismic costs, $8 million of noncash
leasehold  abandonments  including  expired leases and $6 million of exploration
costs.

For the same  quarter  last  year,  Pioneer  reported  oil sales of 34,759  BPD,
natural  gas liquid  sales of 22,667 BPD and  natural  gas sales of 359  MMcfpd.
Realized  prices  for the 2000  first  quarter  were  $22.44 per barrel for oil,
$19.00 per barrel for natural gas liquids and $1.97 per Mcf for natural gas.





Operations Update

The first  quarter of 2001 was  especially  active for Pioneer.  A series of new
discoveries  in the  deepwater  Gulf of  Mexico,  Gabon  and  South  Africa  was
announced  earlier this week and in February,  the Company announced a discovery
in South Africa on its Boomslang prospect. Development activities have commenced
on two prior  discoveries in the deepwater Gulf of Mexico,  and three Gulf Coast
shelf exploration wells are currently  drilling.  Pioneer's  development program
was active in each of its core areas in the United States, Canada and Argentina.

Development of the Canyon  Express  natural gas project in the deepwater Gulf of
Mexico is moving  forward  as  planned  with  first  production  anticipated  in
mid-2002.  The first  development  well at Aconcagua,  one of three fields being
jointly  developed in the Canyon  Express  project,  was successful and exceeded
expectations.  Two development  wells are under way in the Devils Tower field in
the deepwater Gulf of Mexico.

Pioneer is  currently  utilizing 16 rigs in its active  drilling  program in the
United States,  with eight rigs running in the Permian Basin, one rig running in
the Mid-continent area and seven rigs running in the Gulf Coast area,  including
the East Texas Bossier area.

In South Texas,  Pioneer  continues to aggressively  develop the Edwards Reef in
its Pawnee field (100% working interest) and has initiated drilling on the first
of five new  vertical  wells and two  horizontal  reentries.  In the East  Texas
Bossier  play,  four rigs are  drilling,  seven wells are producing and four are
waiting on completion or  facilities.  In the Permian  Basin,  Pioneer's two oil
discoveries in the Myway  Clearfork  field are flowing at a combined rate of 390
BPD. These  discoveries have set up 20 to 30 potential  locations.  In the Ozona
field in  Crockett  County,  Texas,  Pioneer  has drilled 6 wells of its 25 well
program in the Canyon and Strawn  formations with the average well producing 600
Mcfpd.  By year end, net gas  production  from the field is expected to increase
approximately 40% to 21 MMcfpd. On the Gulf of Mexico shelf at High Island Block
A-582 (Cyrus prospect-5.5% working interest),  the first appraisal well has been
drilled and  confirmed  over 230 feet of pay found in a discovery  well  drilled
late last year which encountered two new sands.

In Canada,  Pioneer has completed its winter access program in the Chinchaga and
Martin Creek areas in northeast  British  Columbia.  Pioneer drilled 32 wells in
the  Chinchaga  area  and  connected  26  wells to the  pipeline.  In the  North
Chinchaga  area,  eight  wells  were  drilled  and eight were  connected  to the
pipeline.  In the Martin Creek and Conroy  Black areas,  four wells were drilled
and 12 wells were connected  including 11 wells that were drilled in last year's
program. Production from Canada is up 34% to 65 MMcfpd on a gas equivalent basis
from December 2000.

In Argentina,  the Company's  drilling is focused on oil  development  with four
rigs running.  Pioneer has had  significant  success in the Bajo Barda  Gonzalez
drilling program in Argentina's  Neuquen Basin. Seven wells have been drilled in
2001, and five additional  locations will be drilled in the second  quarter.  In
the Loma Negra Norte  field,  Pioneer has drilled five  successful  wells in the
field and has identified ten to twenty additional drilling locations.

Chairman's Comment

Scott D. Sheffield, Chairman and CEO stated, "We continue to execute our plan to
add  value.  With  strong  cash flow in the first  quarter,  we funded  drillbit
success,  reduced debt and repurchased  shares. Our 2001 exploration  program is
delivering  exciting  results,  and we look  forward  to the  results  from  our
remaining high-impact wells."






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  production  is  expected  to average  116 to 118 MBPD on an oil
equivalent  basis.  Gas  production  is  expected  to  rise as a  result  of the
successful  winter drilling program in Canada and as Argentina enters its winter
season with  higher  demand for natural  gas. In  Argentina,  repairs on a major
pipeline originally  scheduled for the first quarter have been postponed and are
anticipated in the second  quarter.  Oil production is also expected to increase
in Argentina as a result of an active development drilling program.

During the second quarter, lease operating expenses (including production and ad
valorem  taxes) are expected to average $4.75 to $5.00 per BOE, based on today's
NYMEX  strip  prices  for oil  and  natural  gas.  Depreciation,  depletion  and
amortization  is expected to average $5.10 to $5.30 per BOE.  Total  exploration
and  abandonment  expense is expected to be $20 million to $35 million.  General
and administrative expense is expected to be approximately $9 million.  Interest
expense is expected to be $34 million to $35 million, including approximately $3
million  of  non-cash  interest.  The  effective  tax  rate  is  expected  to be
approximately 2% of pre-tax income as the Company benefits from the carryforward
of prior  years' net  operating  losses in the U.S.  and Canada.  For the second
quarter of 2001, cost incurred is expected to range from $140 to $150 million.

Earnings Conference Call

On  Thursday,  April 26, 2001,  at 9:00 a.m.  Central,  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 the "Investors"  button at the top of the page; then select
"Earnings  Calls" from the list across the bottom of the page.  To listen to the
live call, please go to the website approximately ten minutes 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 (888) 850-2545 (confirmation code: 575261)
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: 770881.

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

Financial statements attached.

Except for historical information contained herein, the statements in this Press
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 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, litigation, the costs and results
of  drilling  and  operations,  the  Company's  ability to replace  reserves  or
implement its business plans, access to and cost of capital, uncertainties about
estimates of reserves, quality of technical data, and environmental risks. These
and other risks are described in the  Company'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,
                                                        2001          2000
                                                     ----------    -----------

ASSETS
                                                             
Current assets:
   Cash and cash equivalents                         $   18,305    $   26,159
   Accounts receivable                                  103,916       125,654
   Inventories                                           12,965        14,842
   Deferred income taxes                                  4,800         4,800
   Other current assets                                  18,242        19,936
                                                      ---------     ---------
        Total current assets                            158,228       191,391
                                                      ---------     ---------
Property, plant and equipment, at cost:
   Oil and gas properties, using the successful
     efforts method of accounting                     3,504,678     3,417,094
   Accumulated depletion, depreciation and
     amortization                                      (947,580)     (902,139)
                                                      ---------     ---------
                                                      2,557,098     2,514,955
                                                      ---------     ---------
Deferred income taxes                                    85,200        84,400
Other assets, net                                       121,682       163,689
                                                      ---------     ---------
                                                     $2,922,208    $2,954,435
                                                      =========     =========
LIABILITIES AND STOCKHOLDERS' EQUITY

Current liabilities:
   Accounts payable                                  $  112,597    $  102,275
   Interest payable                                      38,863        38,142
   Other current liabilities                            159,831        76,097
                                                      ---------     ---------
        Total current liabilities                       311,291       216,514
                                                      ---------     ---------
Long-term debt, less current maturities               1,550,230     1,578,776
Other noncurrent liabilities                            194,615       225,740
Deferred income taxes                                    25,100        28,500
Stockholders' equity                                    840,972       904,905
                                                      ---------     ---------
                                                     $2,922,208    $2,954,435
                                                      =========     =========








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

                                                         Three months ended
                                                              March 31,
                                                       ----------------------
                                                          2001        2000
                                                       ---------    ---------
                                                              
Revenues:
   Oil and gas                                         $ 257,986    $ 174,375
   Interest and other                                      5,167        3,755
   Gain on disposition of assets, net                      7,293        8,372
                                                        --------     --------
                                                         270,446      186,502
                                                        --------     --------
Costs and expenses:
   Oil and gas production                                 55,802       43,122
   Depletion, depreciation and amortization  - oil
     and gas                                              48,045       47,898
   Depletion, depreciation and amortization - other        4,116        4,010
   Exploration and abandonments                           22,883       13,075
   General and administrative                             10,448        9,759
   Interest                                               35,616       39,755
   Other                                                  25,217       14,413
                                                        --------     --------
                                                         202,127      172,032
                                                        --------     --------
Income before income taxes                                68,319       14,470
Income tax (provision) benefit                              (400)         300
                                                        --------     --------
Net income                                             $  67,919    $  14,770
                                                        ========     ========
Net income per share:
   Basic                                               $     .69    $     .15
                                                        ========     ========
   Diluted                                             $     .68    $     .15
                                                        ========     ========
Weighted average basic shares outstanding                 98,379      100,163
                                                        ========     ========







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


                                                        Three months ended
                                                             March 31,
                                                      -----------------------
                                                         2001         2000
                                                      ---------     ---------
                                                              
Cash flows from operations:
  Net income                                          $  67,919     $  14,770
  Depletion, depreciation and amortization               52,161        51,908
  Exploration expenses, including dry holes              21,847         9,732
  Deferred income taxes                                  (4,800)       (1,500)
  Gain on disposition of assets, net                     (7,293)       (8,372)
  Interest related amortization                           2,998         3,149
  Derivative mark-to-market                               8,753        13,487
  Other noncash items                                     1,806         1,028
  Changes in operating assets and liabilities:
     Accounts receivable                                 26,449       (18,950)
     Inventories                                          1,124          (190)
     Other current assets                                (5,954)         (649)
     Accounts payable                                   (25,607)      (13,763)
     Interest payable                                       720        (8,512)
     Other current liabilities                           (8,389)        5,063
                                                       --------      --------
Net cash provided by operating activities               131,734        47,201
Net cash used in investing activities                   (88,801)      (39,934)
Net cash used in financing activities                   (50,548)       (8,912)
                                                       --------      --------
Net decrease in cash and cash equivalents                (7,615)       (1,645)
Effect of exchange rate changes on cash
  and cash equivalents                                     (239)           (7)
Cash and cash equivalents, beginning
  of period                                              26,159        34,788
                                                       --------      --------
Cash and cash equivalents, end of period              $  18,305     $  33,136
                                                       ========      ========







                        PIONEER NATURAL RESOURCES COMPANY
                        SUMMARY PRODUCTION AND PRICE DATA


                                                       Three months ended
                                                           March 31,
                                                    -----------------------
                                                       2001          2000
                                                    ---------     ---------
                                                            
Average Daily Production:
  Oil (Bbls) -                       U.S.              24,651        25,802
                                     Argentina          9,646         8,124
                                     Canada               843           833
                                                     --------      --------
                                     Total             35,140        34,759

  Natural gas liquids (Bbls) -       U.S.              18,922        21,438
                                     Argentina            516           447
                                     Canada               988           782
                                                     --------      --------
                                     Total             20,426        22,667

  Gas (Mcf) -                        U.S.             208,678       234,078
                                     Argentina         80,035        84,962
                                     Canada            43,973        40,168
                                                     --------      --------
                                     Total            332,686       359,208

Total Production:
  Oil (MBbls)                                           3,163         3,163
  Natural gas liquids (MBbls)                           1,838         2,063
  Gas (MMcf)                                           29,942        32,688
  Equivalent barrels (MBOE)                             9,991        10,674

Average Price*:
  Oil  (per Bbl) -                   U.S.           $   25.25     $   20.02
                                     Argentina      $   24.59     $   29.44
                                     Canada         $   23.83     $   29.12
                                     Average        $   25.03     $   22.44

  Natural gas liquids (per Bbl)  -   U.S.           $   22.51     $   18.86
                                     Argentina      $   27.04     $   19.41
                                     Canada         $   24.33     $   22.52
                                     Average        $   22.71     $   19.00

  Gas (per Mcf) -                    U.S.           $    5.61     $    2.29
                                     Argentina      $    1.25     $    1.11
                                     Canada         $    5.81     $    1.92
                                     Average        $    4.58     $    1.97
- ---------------

* Average prices include the effects of commodity hedges.






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

      Discretionary  cash  flow and  EBITDAX  (as defined below)  are  presented
herein 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.  Discretionary  cash flow and EBITDAX 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  generally  accepted
accounting  principles.  Discretionary  cash flow and EBITDAX 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,
                                                     -----------------------
                                                        2001         2000
                                                     ---------     ---------
                                                             
Discretionary cash flows*:
   Net income                                        $  67,919     $  14,770
   Depletion, depreciation and amortization             52,161        51,908
   Exploration and abandonments                         22,883        13,075
   Deferred income taxes                                (4,800)       (1,500)
   Gain on disposition of assets, net                   (7,293)       (8,372)
   Interest related amortization                         2,998         3,149
   Derivative mark-to-market                             8,753        13,487
   Other noncash items                                   1,806         1,028
                                                      --------      --------
       Discretionary cash flow                       $ 144,427     $  87,545
                                                      ========      ========
- -------------
*  Discretionary cash flows equal cash flows from operations before working
   capital changes and exploration and abandonments.

EBITDAX**:
   Net income                                        $  67,919     $  14,770
   Depletion, depreciation and amortization             52,161        51,908
   Exploration and abandonments                         22,883        13,075
   Consolidated interest expense                        35,616        39,755
   Consolidated income taxes                               400          (300)
   Gain on disposition of assets, net                   (7,293)       (8,372)
   Derivative mark-to-market                             8,753        13,487
   Other noncash expenses                                  867         1,038
                                                      --------      --------

                                                     $ 181,306     $ 125,361
                                                      ========      ========
- -------------
**  "EBITDAX"   represents   earnings   before   depletion,   depreciation   and
    amortization expense; impairment of oil and gas properties;  exploration and
    abandonments; consolidated interest expense; consolidated income taxes; gain
    or  loss  on the  disposition  of assets;  extraordinary items;  and,  other
    noncash expenses.