PIONEER NATURAL RESOURCES COMPANY

PIONEER NATURAL RESOURCES COMPANY

March 30, 2005 14:31 ET

Pioneer Announces Executive Appointment


NEWS RELEASE TRANSMITTED BY CCNMatthews

FOR: PIONEER NATURAL RESOURCES COMPANY

NYSE SYMBOL: PXD

MARCH 30, 2005 - 14:31 ET

Pioneer Announces Executive Appointment

DALLAS--(CCNMatthews - Mar 30, 2005) -

Pioneer Natural Resources Company (NYSE:PXD) today announced that Mark
S. Berg will join the Company as Executive Vice President, General
Counsel and Secretary effective April 1, 2005. He will report to Scott
Sheffield, Pioneer's Chairman and Chief Executive Officer, and will
replace Mark Withrow whose resignation was announced earlier this year.

Mr. Berg served as Executive Vice President, General Counsel and
Secretary of American General Corporation, a Fortune 200 diversified
financial services company. Subsequent to the sale of American General
to American International Group, Mr. Berg was appointed Senior Vice
President, General Counsel and Secretary of Hanover Compressor Company,
a NYSE company specializing in natural gas compression and processing.
Mr. Berg began his career in 1983 with the Houston-based law firm of
Vinson & Elkins LLP, and he was elected to the firm's partnership in
1990.

Mr. Berg graduated with a Bachelor of Arts degree from Tulane University
in 1980, and he earned his Juris Doctor from the University of Texas
School of Law in 1983.

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

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Contact Information

  • FOR FURTHER INFORMATION PLEASE CONTACT:
    Pioneer Natural Resources Company, Dallas
    Investors
    Frank Hopkins or Chris Paulsen, 972-444-9001
    or
    Media and Public Affairs
    Susan Spratlen, 972-444-9001