BR Announces Results of Bighorn 6-27 Well Test.

Business/Energy Editors

HOUSTON--(BUSINESS WIRE)--March 13, 2001

Burlington Resources Inc. (NYSE:BR) today announced that it has completed and tested the fifth Deep Madison formation well, the Bighorn 6-27, at the Madden Field in central Wyoming. Burlington Resources operates the well and holds a 49 percent working interest.

The well, which was designed to further test the downdip limits of the field, reached a total depth of 25,855 feet in early January. The recent test results yielded minor quantities of water and gas and the well will not be completed as a producer in the Madison formation. The Company now estimates that previously determined gross reserves of 2.4 trillion cubic feet (TCF) for the Madison formation in the field may ultimately increase by as much as 300 to 600 billion cubic feet (BCF). Further evaluation of technical data is required before additional reserves can be booked and the final well status can be decisioned.

The Company intends to move to a two-rig development-drilling program in the second quarter of 2001. BR currently operates four wells producing from the deep Madison formation, each capable of gross production in excess of 50 million cubic feet of gas per day.

Current gross production from the Madison formation of approximately 130 million cubic feet per day is constrained by processing capacity at the Lost Cabin Gas Plant in Lysite, Wyoming. The plant's third train, currently under construction, is scheduled for completion in the third quarter of 2002 and will allow gross production from the deep Madison formation to increase to a total of 310 million cubic feet per day.

Bobby S. Shackouls, BR's Chairman, President and CEO commented: "The Madden Field is a long reserve-life legacy asset that will continue to provide substantial cash flow for the Company many years into the future. Our technical expertise has allowed us to substantially reduce costs in drilling and production operations related to Madden's deep Madison formation sour gas. We will continue to look for ways to enhance the value of our Madden Field gas in the future."

Burlington Resources Inc., headquartered in Houston, Texas, is one of the largest independent oil and gas companies in the world, with approximately 80 percent of its reserves in the form of natural gas. The Company has operations in the U.S., Canada, the United Kingdom and several other international locations. Additional information on BR is available on the Company's Web site, located 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.