Burlington Resources Confirms Minimal Damage Due to Hurricane Katrina

Houston, Texas, Sept. 6, 2005 – Burlington Resources Inc. (NYSE: BR) today announced that its facilities in South Louisiana had sustained little apparent damage due to Hurricane Katrina's passage through the area. Net production shut in as a result of the storm currently totals approximately 60 million cubic feet of natural gas equivalent per day (MMcfed), or about 2 percent of the company's total production. An additional 65 MMcfed of net production that was initially shut in was restored over the past few days. Burlington serves as operator of about 60 percent of the volumes affected. The production curtailments began August 24. The resumption of production from facilities affected by the storm will depend primarily on restoration of local communications, pipeline and processing plant services, transportation and other vital functions, as well as on drainage of floodwaters. Consequently, the timing of additional resumptions is still being assessed. "We were very fortunate that this terrible storm caused so little damage to our facilities, and we intend to restore the shut-in production as soon as local conditions allow," said Bobby S. Shackouls, chairman, president and chief executive officer. "At the same time, the Burlington Resources Foundation is pledging substantial contributions to major relief agencies in the impacted areas and in Houston, which has been called upon to host a large number of evacuees. Our employees are also making significant individual pledges and hosting displaced friends and family members in their homes." Burlington Resources ranks among the world's largest independent oil and gas companies, and holds one of the industry's leading positions in North American natural gas reserves and production. Headquartered in Houston, Texas, the company conducts exploration, production and development operations in the U.S., Canada, the United Kingdom, Africa, China and South America. For additional information see the Burlington Resources Web site at www.br-inc.com.

FORWARD-LOOKING STATEMENTS

This press release may contain projections and other forward-looking statements within the meaning of Section 21E of the Securities Exchange Act of 1934, as amended. Any such projections or statements reflect the company's current views with respect to future events and financial performance. No assurances can be given, however, that these events will occur or that such projections will be achieved, and actual results could differ materially from those projected. A discussion of important factors that could cause actual results to differ materially from those projected is included in the company's periodic reports filed with the Securities and Exchange Commission.