Pioneer's headquarters are in Dallas.

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Pioneer Closes Sale of Non-Strategic Canadian Properties

Business Editors

DALLAS----Pioneer Natural Resources
Company (NYSE:PXD) today announced that its Canadian subsidiary has
closed the sale of its Martin Creek, Conroy Black and Lookout Butte
oil and gas properties to Ketch Resources Ltd.

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This plan insures that personnel are trained and prepared to respond
to an incident such as this. Prior to the incident, the Company was
producing approximately 17 ,000 barrels oil equivalent per day from the
West Panhandle Field.

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Pioneer's Fain Gas Plant is located in the Texas Panhandle, 25
miles north of Amarillo.

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Pioneer maintains an Emergency Response Action Plan that is
followed in the industry and that meets all governmental requirements.
Pioneer is insured on the physical damage to the plant and
maintains business interruption insurance to limit the impact of
production interruptions extending beyond 30 days.
Pioneer is a large independent oil and gas exploration and
production company with operations in the United States, Argentina,
Canada , Equatorial Guinea, Nigeria, South Africa and Tunisia.

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Pioneer expects to recognize an after-tax gain associated with the
Canadian asset sale of approximately $75 to $80 million based on the
Company 's intent to create a repatriation plan that qualifies for the
provisions of the American Jobs Creation Act of 2004. At Chinchaga, the Company
drilled 56 wells during its winter drilling campaign and has an
extensive inventory of locations remaining to drill in future years.

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Pioneer retained its core areas in Canada, the Chinchaga gas and
the Horseshoe Canyon coalbed gas fields.

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Pioneer's Fain Gas Plant Shut In Due to Fire No Injuries Sustained

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.

This category contains links to English-language web sites about Equatorial Guinea - including businesses and organisations within Equatorial Guinea, and links to information and news from external sources.

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pioneernrc.UN) for
proceeds after closing adjustments of approximately $199 million.

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There were no injuries associated with the
incident.

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In accordance
with the provisions of Statement of Financial Accounting Standards No.
Beginning in June, Pioneer plans to drill a minimum of 80 wells to
assess the potential of its extensive Horseshoe Canyon coalbed acreage
position.

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Pioneer is a large independent oil and gas exploration and
production company with operations in the United States, Argentina,
Canada, Equatorial Guinea, Nigeria, South Africa and Tunisia.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.

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Business Editors/Energy Editors

DALLAS----Pioneer Natural Resources
Company (NYSE:PXD) today announced that on Sunday, May 15, a
mechanical failure occurred in the inlet area of the Fain Gas Plant
resulting in a fire. Based upon a preliminary review, Pioneer believes
the plant can be restored within 60 to 90 days.
The Company will provide an update as additional information
becomes available. For more information, visit
Pioneer's website at www.
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 .
144, "Accounting for the Impairment or Disposal of Long-Lived Assets,"
Pioneer will report the results of operations of the Canadian
properties sold, including the gain on disposition, as discontinued
operations in its second quarter results.
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.

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The
Company is in the process of inspecting the plant and assessing damage
to the facilities.

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Pioneer's headquarters are in Dallas. For more information , visit
Pioneer's website at www.

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In the meantime,
Pioneer is exploring alternate marketing arrangements to redirect
volumes processed at the plant.

pioneernrc.

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It is the primary processing facility for
Pioneer's gas production from its West Panhandle gas field. 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 .

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These and other risks are described in Pioneer's 10-K and
10-Q Reports and other filings with the Securities and Exchange
Commission. (TSE:KER. These and other risks are described in Pioneer's 10 -K and
10-Q Reports and other filings with the Securities and Exchange
Commission.

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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.