Canadian Superior Energy Inc. Commences Side-Tracking Operations On Marquis Prospect Offshore Nova Scotia.

Business Editors

CALGARY, Alberta--(BUSINESS WIRE)--Aug. 29, 2002

Canadian Superior Energy Inc. ("Canadian Superior") (AMEX: SNG) (TSX: SNG) announced today that it has commenced side-tracking operations on its "Marquis Prospect" where drilling operations are currently underway offshore Nova Scotia.

Mike Coolen, Canadian Superior's Director of East Coast Operations, said today in Halifax, "A new well 'Marquis' L-35A commenced drilling on Wednesday, August 28, 2002 to further evaluate the Abenaki reef and porosity encountered in Canadian Superior's initial 'Marquis' L-35 well. The side-tracking procedure being utilized on Marquis L-35A is the same procedure successfully utilized on two of four successful wells drilled at Deep Panuke to evaluate the Abenaki reef in the area". Due to the competitive nature of the prospect, Coolen indicated that further information on the project could not be released at this time.

Canadian Superior's "Marquis Prospect" is located approximately 20 kilometres (12.5 miles) northwest of Sable Island and is directly on trend and analogous to the recent Deep Panuke Abenaki Reef Natural Gas Discovery, approximately 25 kilometres (15.6 miles) to the southwest where four wells have been successfully drilled with productive capacity each in excess of 50 MMCF/D. The Deep Panuke discovery is expected to produce up to 400 MMCF/D when it is brought on line. Canadian Superior's "Marquis" Prospect is in shallow water depths (less than 100 metres) in close proximity to newly constructed pipeline infrastructure connecting approximately 500 MMCF/D of Sable Island natural gas to vibrant New England natural gas markets.

Canadian Superior is a Calgary, Alberta based oil and gas exploration and production company. The Company is one of the largest acreage holders offshore Nova Scotia, with a 100% interest in 934,065 acres offshore Nova Scotia (See: Canadian Superior's website at www.cansup.com to review Canadian Superior's "Marquis, Mariner and Mayflower Offshore Projects" and to view the "Table of Major Offshore Nova Scotia Acreage Holders" and "Offshore Nova Scotia Maps" and the location of new Canadian Superior lands and proposed industry wells).