EXHIBIT 99.1

                                  NEWS RELEASE

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

                   Pioneer Reports Second Quarter 2003 Results

Dallas, Texas,  July 30, 2003  --  Pioneer Natural Resources Company ("Pioneer")
(NYSE:PXD) today announced financial and operating results for the quarter ended
June 30, 2003.

Pioneer  reported net income of $77.2 million,  or $0.65 per diluted share,  for
the second quarter of 2003. For the same period last year,  Pioneer reported net
income of $11.1 million,  or $0.10 per share.  For the six months ended June 30,
2003, Pioneer reported net income of $161.4 million, or $1.36 per diluted share.
This compares to $9.2 million, or $0.08 per share, for the first half of 2002.

Cash flow from operations for the second quarter was $189.9 million  compared to
$90.6 million for the same period in 2002.  The Company  reduced  long-term debt
$56.9 million during the second quarter of 2003 to $1,710.7 million.

Second  quarter oil and gas sales  increased  45% from the prior year quarter to
average  159,092  barrels per day (BPD) on a barrel oil equivalent  (BOE) basis.
Second  quarter oil sales  averaged  32,079 BPD and  natural  gas liquids  sales
averaged 22,656 BPD. Gas sales in the second quarter  averaged 626 million cubic
feet per day (MMcfpd).  Realized  prices for oil and natural gas liquids for the
quarter were $24.25 and $17.92 per barrel, respectively.  The realized price for
gas was $4.08 per  thousand  cubic feet  (Mcf),  and North  American  gas prices
averaged $4.77 per Mcf.

Second  quarter  production  costs  averaged  $4.80  per  BOE.  Exploration  and
abandonment  costs of $47.0  million for the quarter  included  $18.1 million of
geologic and  geophysical  expenses  including  seismic  costs,  $1.7 million of
noncash  leasehold  abandonments  including  expired leases and $27.2 million of
exploration costs.

For the same  quarter  last  year,  Pioneer  reported  oil sales of 30,840  BPD,
natural  gas liquids  sales of 21,776 BPD and gas sales of 342 MMcfpd.  Realized
prices for the 2002 second  quarter  were $23.58 per barrel for oil,  $14.58 per
barrel for natural gas liquids and $2.48 per Mcf for gas.

Operations Update

Pioneer continues an active core area drilling program in 2003. To date, Pioneer
has successfully drilled 155 wells in the U.S., 23 wells in Canada, and 35 wells
in Argentina. Onshore U.S., Pioneer is presently running 13 rigs, including five
in the West  Panhandle  gas field and six in the Permian  Basin.  Three rigs are
currently drilling in Argentina.

In the Gulf of Mexico,  Pioneer is active in its deepwater  Falcon Corridor area
developing the Harrier  discovery,  drilling the Tomahawk prospect and preparing
to drill the Raptor  prospect  later this year.  The Company  continues  to move
forward  with  development  plans  for the  Ozona  Deep  discovery  in the Auger
mini-basin and the Triton  discovery,  a satellite to the Devils Tower field. An
appraisal  well is scheduled at Triton in the fourth quarter of this year, and a
well is  planned  at Ozona  Deep in the first  quarter  of 2004.  On the  shelf,
Pioneer is currently drilling the Samoa gas prospect, the third of five shelf
prospects planned for 2003 and anticipates results late in the third quarter.

Pioneer  continues to evaluate the potential for  commercial  development of its
Jurassic discovery in the Northwest Kuparuk River area of Alaska. The evaluation
effort is multifaceted,  and the Company is encouraged with the early results of
the work in progress.

Pioneer is awaiting final  government  approval of renegotiated  terms in Gabon.
Upon formal approval of terms,  Pioneer  expects to commence a drilling  program
early in 2004 as part of its development plan for the project.

In Tunisia,  Pioneer participated in two exploration wells on the Anaguid block.
The CEM-1  encountered 95 feet of net gas and condensate pay in upper Ordovician
sands.  In a drill  stem test,  the  unstimulated  well  flowed at a rate of 3.6
MMcfpd and 540 BPD. A second well, the SEA-1,  encountered 52 feet of net pay in
the same  section.  Both wells have been  suspended,  pending the  evaluation of
commercial   development  plans.  On  the  Borj  El  Khadra  block,  Pioneer  is
participating in the Adam 2 development  well, the first development well in the






new 860 square kilometer Adam  concession.  The discovery well, Adam 1, has been
producing  through nearby facilities at the Oued Zar field at a gross stabilized
rate of over 3,500 BPD since late May,  2003.  Following  the  completion of the
Adam 2 well,  Pioneer plans to drill the Hawa  exploration  well in the southern
portion of the Adam concession where Pioneer has a 28% working interest.

Scott D. Sheffield,  Chairman and CEO, stated, "In addition to the strong growth
profile we have established from the projects  currently under  development,  we
have many  projects  in  earlier  phases  that offer  upside  impact in 2004 and
beyond.  Wells drilling on the Gulf of Mexico shelf,  in the Falcon Corridor and
in Tunisia, if successful,  could further increase production beginning in 2004.
Development  plans are ongoing in many areas with drilling  planned in late 2003
or early 2004 on discoveries in Gabon and the Ozona Deep and Triton fields,  and
we are working toward  determining  the potential for commercial  development of
oil in Alaska and gas in South Africa."

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.

Third quarter 2003 production is expected to average 150,000 to 165,000 BOEs per
day. Third quarter lease operating expenses (including production and ad valorem
taxes) are  expected  to average  $4.75 to $5.15 per BOE based on today's  NYMEX
strip  prices  for oil and gas.  Depreciation,  depletion  and  amortization  is
expected  to  average  $6.90 to  $7.30  per BOE as a  larger  proportion  of the
Company's  production is derived from  higher-cost Gulf of Mexico fields and the
Sable  field in South  Africa.  Total  exploration  and  abandonment  expense is
expected to be $25 million to $50 million and general and administrative expense
is expected to be $13 million to $15 million. Interest expense is expected to be
$23  million to $25  million  and  accretion  of  discount  on asset  retirement
obligations  is  expected  to be  approximately  $1  million.  Income  taxes are
expected  to be $4 million to $6  million,  principally  due to income  taxes in
Argentina  and  nominal  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.

Earnings Conference Call

This morning at 10:00 a.m.  Eastern,  Pioneer  will  discuss its second  quarter
financial and operating results with an accompanying presentation. The call will
be webcast on Pioneer's  website,  www.pioneernrc.com.  At the  website,  select
'INVESTOR'  at the top of the  page.  For those  who  cannot  listen to the live
broadcast, a replay will be available shortly after the call.  Alternately,  you
may dial (800) 946-0719  (confirmation  code:  422830) to listen to the call via
the  telephone  and view the  accompanying  visual  presentation  at the website
above.  A  telephone  replay  will  be  available  by  dialing  (888)  203-1112:
confirmation code: 422830.

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 are 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.