CALGARY, ALBERTA -- (MARKET WIRE) -- 03/31/08 -- Canadian Superior Energy Inc. ("Canadian Superior") (TSX: SNG) (AMEX: SNG) has filed with the securities regulatory authorities in each of the provinces of British Columbia, Alberta, Saskatchewan, Manitoba, Ontario, Quebec, Nova Scotia, Prince Edward Island and Newfoundland its statements of reserves data and other oil and gas information for the year ended December 31, 2007 (the "Statement of Reserves Data"), as mandated by National Instrument 51-101 - Standards of Disclosure for Oil and Gas Activities. The Statement of Reserves Data is included in the annual information form of Canadian Superior for the year ended December 31, 2007 (the "AIF"). Copies of Canadian Superior's AIF may be obtained on the System for Electronic Document Analysis and Retrieval at www.sedar.com.

Canadian Superior is a Calgary, Alberta, Canada based oil and gas exploration and production company with operations Offshore Trinidad and Tobago, Offshore Nova Scotia, Canada and in Western Canada. See Canadian Superior's website at www.cansup.com to review Canadian Superior's operations in Western Canada, Offshore Trinidad and Tobago and Offshore Nova Scotia interests. Canadian Superior has approximately 20,000 shareholders worldwide, including some of the top institutional shareholders in North America.

This news release contains forward-looking information, including estimates, projections, interpretations, prognoses and other information that may relate to current, past or future production, development(s), testing, well test results, project start-ups and future capital spending. Current, past and/or future actual results and/or reported results, estimates, projections, interpretations, prognoses, well results, test results, reserves, production, resource and/or resource potential, development(s), project start-ups, and capital spending, plans and/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. This news release may contain the reference to the terms discovery, reserves and/or resources or resource potential which are those quantities estimated to be contained in accumulations. There is no certainty that any portion of these accumulations or estimated accumulations in this news release may not change materially; and that, if discovered, in any discovery, the accumulations or estimated accumulations may not be economically viable or technically feasible to produce.

Statements contained in this news release relating to estimates, 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, scheduling, re-scheduling and other factors which may cause the actual results, performance, estimates, projections, interpretations, prognoses, schedules or achievements of the Corporation, 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 Corporations' annual reports on Form 40-F or Form 20-F on file with the U.S. Securities and Exchange Commission.

Contacts:
Canadian Superior Energy Inc.
Investor Relations
(403) 294-1411
(403) 216-2374 (FAX)
Website: www.cansup.com

Canadian Superior Energy Inc.
Suite 2700, 605 - 5th Avenue S.W.
Calgary, Alberta
Canada T2P 3H5

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