EXHIBIT 99.1




                                  NEWS RELEASE

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

               Pioneer Announces Results for Debt Exchange Offers

Dallas,  Texas, July 12, 2004 -- Pioneer Natural  Resources Company  ("Pioneer")
(NYSE:PXD)  today  announced  results  for its  previously  announced  offers to
exchange (the "Exchange  Offers") any or all of three series of its  outstanding
senior notes (the "Old  Notes") for a like  principal  amount of  Pioneer's  new
5.875%  Senior  Notes due 2016 (the "New Notes") and cash.  The Exchange  Offers
also  included  a  solicitation  of  consents  to  proposed  amendments  to  the
supplemental  indentures governing the 9-5/8% Senior Notes due April 1, 2010 and
the 7.50% Senior Notes due 2012.

As of 12:00  midnight,  New  York  City  time,  on  Friday,  July 9,  2004  (the
"Expiration  Date"),  Pioneer  had  received  tenders  for the Old  Notes in the
following amounts, all of which will be accepted for exchange by Pioneer:

                                                                    Principal          Percentage of
                                                   Cusip             Amount             Outstanding
                  Series                           Number           Tendered          Principal Amount
                  ------                         -----------       ------------       ----------------

                                                                                
     8 1/4% Senior Notes due 2007                701018 AB 9       $117,925,000             78.6%
     9-5/8% Senior Notes due April 1, 2010       723787 AC 1       $275,125,000             81.1%
     7.50% Senior Notes due 2012                 723787 AD 9       $133,825,000             89.2%


As a result, Pioneer has received sufficient tenders of Old Notes to satisfy the
conditions  to  each  of  the  Exchange  Offers  and  to  execute  the  proposed
amendments. Settlement for the exchange price will be on Thursday, July 15, 2004
(the "Settlement  Date") for holders of Old Notes tendered before the Expiration
Date. Pioneer will execute the proposed amendments prior to settlement.

The Bank of New York was the exchange agent for the Exchange  Offers and will be
the trustee under the New Notes. D.F. King & Co., Inc. was the information agent
for the Exchange  Offers.  Deutsche  Bank  Securities  Inc. was  Pioneer's  lead
financial advisor for the Exchange Offers, and Citigroup Global Markets Inc. and
Credit Suisse First Boston LLC were co-financial advisors.

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

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 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,
international  operations  and associated  international  political and economic
instability,  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.