CALGARY, ALBERTA--(MARKET WIRE)--Sep 8, 2008 -- Canadian Superior Energy Inc. ("Canadian Superior", the "Company") (Toronto:SNG.TO - News) (SNG - News) announced today, as Operator of the "Intrepid" Block 5(c), that it has successfully drilled the 26" hole section of the well and has run and cemented in place the 20" casing string to a depth of 3,030 feet subsea. The "Endeavour" well was spudded on August 28, 2008 and, as reported previously, the 36" surface hole section was drilled successfully and the 30" surface conductor casing was run and cemented in place. Following necessary drilling operations, including the installation of the marine riser and the blowout preventer ("BOP"), drilling will re-commence. The next section of the well to be drilled will reach just over 5,000 feet subsea.

Speaking today, Craig McKenzie, Canadian Superior's Chief Executive Officer, said, "I am pleased to report our good drilling progress at 'Endeavour'. Considering the significant exploration success we have already achieved on 'Intrepid' Block 5(c), we are excited to be drilling 'Endeavour' and are optimistic that it will meet expectations. As in the previous wells, the 'Endeavour' targets a large separate structure determined from the analysis and evaluation of extensive 3D seismic. The primary objective includes proving up higher pressure horizons like seen in 'Bounty' with a secondary objective including at least one of the productive horizons penetrated in the 'Victory' well."

The "Endeavour" well is planned to be drilled to a total vertical depth of approximately 18,000 feet subsea in about 1,000 feet of water and is expected to take approximately 100 days to drill. The "Endeavour" well is being drilled by the Kan Tan IV semi-submersible drilling rig, which drilled the "Victory" and "Bounty" natural gas discovery wells on this block in this initial 3 well program.

Daily Updates of drilling progress at "Endeavour" can be viewed on Canadian Superior's website, www.cansup.com.

Canadian Superior is a Calgary, Alberta, Canada based oil and gas exploration and production company with operations primarily offshore Trinidad and Tobago, Offshore Nova Scotia, Canada, in Western Canada, in the United States and in North Africa. See Canadian Superior's website at www.cansup.com to review Canadian Superior's operations in Western Canada, offshore Trinidad and Tobago, Offshore Nova Scotia interests and North Africa 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 or relates to future production, resource potential and/or reserves, project start-ups and future capital spending. Forward-looking information contained in this news release is as of the date of this news release. The Company assumes no obligation to update and/or revise this forward-looking information "except as required by law". Actual results, estimates, projections, resource potential and/or reserves, interpretations, prognoses 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 term "undiscovered natural gas resources", which are those quantities of natural gas estimated to be contained in accumulations yet to be discovered. There is no certainty that any portion of undiscovered resources (oil, natural gas, natural gas liquids or other hydrocarbons) will be discovered and that, if discovered, in this or any other discovery, the discovered resource may not be economically viable or technically feasible to produce.

Statements contained in this news 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, scheduling, re-scheduling and other factors which may cause the actual results, performance, estimates, projections, resource potential and/or reserves, 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: http://www.cansup.com
      
     Canadian Superior Energy Inc.
     Suite 2700, 605 - 5th Avenue S.W.
     Calgary, Alberta
     Canada T2P 3H5