EXHIBIT 99.1


                                  NEWS RELEASE

                                                    Investor Relations Contacts:
                                Susan Spratlen or Chris Paulsen   (972) 444-9001

              Pioneer Board of Directors Appoints New Board Member

Dallas,  Texas,   September  24,  2004  --  Pioneer  Natural  Resources  Company
(NYSE:PXD) today announced that Jim A. Watson has been appointed to its Board of
Directors,  effective  immediately.  With several  members of the board reaching
mandatory retirement age over the next two years,  Pioneer's board is seeking to
add new members in advance of the  retirements,  keeping a balance of technical,
legal  and  financial  expertise  and  allowing  time  for new  members  to gain
knowledge of the Company to  facilitate  a smooth  transition.  Mr.  Watson will
serve as an independent  director under the board's  appointment until he stands
for election at Pioneer's annual shareholder  meeting to be held in 2005, and he
will be a member of the audit committee of the board.

Mr.  Watson  comes to Pioneer  with  extensive  experience  in energy law. He is
Senior Counsel at Carrington,  Coleman,  Sloman & Blumenthal,  L.L.P. in Dallas,
Texas,  having  been  admitted  to  practice  law in Texas in  1964.  His  prior
experience  includes  eight  years as Partner  with Vinson & Elkins and 20 years
with Johnson & Wortley,  principally representing the energy industry. He earned
his Bachelor's  degree in Business  Administration  from the University of Texas
and graduated from the University of Texas Law School, with honors.

Mr.  Watson  was listed in the  corporate  law  section  of The Best  Lawyers in
America,  2003-2004.  He also  enjoys  teaching  and has  served  as an  adjunct
professor  at the law  school  of his alma  mater and has  taught  undergraduate
history at Southern Methodist University in Dallas.

"We are  honored  that Jim has  agreed to join our board of  directors,"  stated
Scott Sheffield.  "We believe that effective  corporate  governance demands that
board members bring relevant  experience and knowledge to the table and that the
board be balanced with members from each of several critical  disciplines.  With
his  experience  and  knowledge  of energy  law,  Jim is a perfect  fit and will
provide an important perspective as we pursue opportunities around the world."

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

Pioneer has filed with the SEC a  registration  statement  containing  the joint
proxy  statement-prospectus  to be used by Pioneer to  solicit  approval  of its
stockholders to issue additional stock in the merger and to be used by Evergreen
to solicit the approval of its stockholders for the proposed merger. Pioneer has
also filed other documents concerning the proposed merger. You are urged to read
the registration  statement and the joint proxy  statement-prospectus  regarding
the proposed merger because they contain important information. You can obtain a
free copy of the joint proxy  statement-prospectus  including  the  registration
statement,  as well as other filings containing information about Pioneer at the
SEC's   Internet   Site   (http://www.sec.gov).   Copies  of  the  joint   proxy
statement-prospectus can also be obtained without charge, by directing a request
to: Pioneer Natural Resources Company,  Susan Spratlen,  5205 N. O'Connor Blvd.,
Suite 900, Irving, Texas 75039, or via telephone at 972-969-3583.

Pioneer  and  its  directors  and  executive   officers  may  be  deemed  to  be
participants in the  solicitation of proxies from the stockholders of Pioneer in
connection with the proposed  merger.  Evergreen and its directors and executive
officers may be deemed to be  participants  in the  solicitation of proxies from
the stockholders of Evergreen in connection with the proposed merger. Additional
information  regarding  the interests of those  participants  may be obtained by
reading the joint proxy statement-prospectus regarding the proposed merger.

This filing  contains  forward-looking  statements that are made pursuant to the
Safe Harbor Provisions of the Private Securities  Litigation Reform Act of 1995,
particularly  those statements  regarding the effects of the proposed merger and






those preceded by, followed by or that otherwise  include the words  "believes,"
"expects,"   "anticipates,"  "intends,"  "estimates,"  or  similar  expressions.
Forward-looking  statements  relating to  expectations  about future  results or
events are based upon  information  available  to Pioneer  and  Evergreen  as of
today's date,  and neither  Pioneer nor  Evergreen  assumes any  obligations  to
update  any  of  these  statements.   The  forward-looking  statements  are  not
guarantees  of the future  performance  of Pioneer,  Evergreen  or the  combined
company,   and  actual  results  may  vary   materially  from  the  results  and
expectations discussed. For instance, although Pioneer and Evergreen have signed
an agreement  for a subsidiary of Pioneer to merge with  Evergreen,  there is no
assurance that they will complete the proposed merger. The merger agreement will
terminate if the companies do not receive necessary approval of the stockholders
of Pioneer and Evergreen or government  approvals or fail to satisfy  conditions
to closing.  Additional risks and  uncertainties  related to the proposed merger
include, but are not limited to, conditions in the financial markets relevant to
the proposed  merger,  the  successful  integration  of Evergreen into Pioneer's
business,  and each company's  ability to compete in the highly  competitive oil
and gas exploration and production industry. The revenues, earnings and business
prospects  of Pioneer  and the  combined  company  and their  ability to achieve
planned  business   objectives  will  be  subject  to  a  number  of  risks  and
uncertainties.  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  identified  from time to time in  Pioneer's  SEC  reports  and public
announcements.