Canadian Superior Proceeding Full Steam Ahead on `Mariner' Project.

HALIFAX, Nova Scotia -- Canadian Superior Energy Inc. ("Canadian Superior")(AMEX:SNG)(TSX:SNG) announced today that it is proceeding ahead with its "Mariner" Project offshore Nova Scotia, near Sable Island, with a 2nd "Mariner" well planned for commencement of drilling in a drilling window available from December 31, 2004 to April 31, 2005.

Speaking from Canadian Superior's Halifax office today, Mike Coolen, Vice President, East Coast Operations, said, "We had very productive meetings last week in Halifax during the Canadian Offshore Resources Exhibition and Conference ("CORE") with the drilling contractors who have qualified for the final round of bidding to drill on the 'Mariner' Project, planned to commence during a drilling window from December 31, 2004 to April 31, 2005, depending on rig selection, regulatory approval and the finalizing of partner arrangements that are currently underway."

Also, Mark Gillis, Canadian Superior's Manager, East Coast Operations, said from Halifax today, "The planned drilling is on track given that we have secured the most critical long lead item for the well by purchasing the 10 3/4 inch and 9 7/8 inch casing, for the next 'Mariner' well, which will be delivered to our storage over the next few days. The pipe was particularly critical to continue with our critical path planned for spudding the next well."

The "Mariner" Project is a multi-well project on Canadian Superior's "Mariner" block (EL 2409) offshore Nova Scotia, Canada. Three large prospects have been identified for drilling on the "Mariner" block utilizing high-resolution seismic. The block encompasses a total area of 101,800 acres and is located approximately 290 kilometers (180 miles) offshore Nova Scotia, near Sable Island, southeast of Halifax, Nova Scotia.

Canadian Superior is a Calgary, Alberta based oil and gas exploration and production company with operations in western Canada, offshore Nova Scotia and offshore Trinidad and Tobago. The Company is one of the largest acreage holders offshore Nova Scotia, with 100% interests in 1,293,946 acres offshore Nova Scotia (See: Canadian Superior's website at www.cansup.com to review Canadian Superior's "Marquis, Mariner, Mayflower, Marauder and Marconi Offshore Projects" and to view the "Table of Major Offshore Nova Scotia Acreage Holders" and "Offshore Nova Scotia Maps", to review information on the Company's Western Canadian operations and for information and detailed maps regarding Canadian Superior's Trinidad "Tradewinds" Offshore Project and the recently awarded Block 5 (c)).

This press release contains forward-looking information on future production, project start-ups and future capital spending. Actual results or estimated results could differ materially due to changes in project schedules, operating performance, demand for oil and gas, commercial negotiations or other technical and economic factors or revisions. Statements contained in this press release relating to future results, events and expectations are 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 involve known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievement of the Company, or industry results, to be materially different from any future results, performance or achievements expressed or implied by such statements. Such factors include, among others, those described in the Company's annual report on Form 40-F on file with the U.S. Securities and Exchange Commission.