Mission Resources to Release Fourth Quarter & Full Year 2004 Earnings

    Business Editors/Energy Editors

    HOUSTON--(BUSINESS WIRE)--Feb. 22, 2005--Mission Resources Corporation (Nasdaq:MSSN) said today that it will issue its fourth quarter and full year 2004 earnings before the market opens on Tuesday, March 8, 2004. The Company will also hold its quarterly conference call that morning at 11:00 a.m. EST (10:00 a.m. CST).
    To participate in the call, dial 877-894-9681 five to ten minutes before the call begins. Please reference Mission Resources, conference ID 4346345. The call will also be broadcast live over the Internet from the Company's web site at www.mrcorp.com.
    A replay of the call will be available approximately two hours after the live broadcast ends and will be accessible until Tuesday, March 22, 2004. To access the replay, dial 800-642-1687 and reference conference ID 4346345. In addition, the webcast will also be archived on the Company's web site.
    Mission Resources Corporation is a Houston-based independent exploration and production company that drills for, acquires, develops and produces natural gas and crude oil primarily in the Permian Basin (in West Texas and Southeastern New Mexico), along the Texas and Louisiana Gulf Coast and in both the state and federal waters of the Gulf of Mexico.
    This press release contains "forward-looking statements" within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. These forward-looking statements are subject to certain risks, trends and uncertainties that could cause actual results to differ materially from those projected. Among those risks, trends and uncertainties are our estimate of the sufficiency of our existing capital sources, our ability to raise additional capital to fund cash requirements for future operations, the uncertainties involved in estimating quantities of proved oil and natural gas reserves, in prospect development and property acquisitions and in projecting future rates of production, the timing of development expenditures and drilling of wells, and the operating hazards attendant to the oil and gas business. In particular, careful consideration should be given to cautionary statements made in the various reports the Company has filed with the Securities and Exchange Commission. Mission undertakes no duty to update or revise these forward-looking statements.

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CONTACT: Mission Resources Corporation, Houston Ann Kaesermann, 713-495-3100 investors@mrcorp.com

KEYWORD: TEXAS INDUSTRY KEYWORD: OIL/GAS ENERGY EARNINGS CONFERENCE CALLS SOURCE: Mission Resources Corporation

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