Endeavour Announces Results of Maureen Appraisal Well

HOUSTON -

Endeavour International Corporation (AMEX: END) (LSE: ENDV) today announced that the Maureen appraisal well located in Block 16/29a in the United Kingdom Central North Sea has been plugged and abandoned after failing to encounter commercial quantities of hydrocarbons. The well was drilled to a total depth of 9,281 feet to target an untested fault block.

Endeavour International Corporation is an oil and gas exploration and production company focused on the acquisition, exploration and development of energy reserves in the North Sea and the United States. For more information, visit www.endeavourcorp.com

Certain statements in this news release should be regarded as “forward-looking” statements within the meaning of the securities laws. These statements speak only as of the date made. Such statements are subject to assumptions, risk and uncertainty. Actual results or events may vary materially.

Source: Endeavour International Corporation

Mike Kirksey, Endeavour - Investor Relations, +44(0)207-451-2360, or +1-713-307-8788; or Jeffrey Auld, Cannacord Adams - UK Broker, +44(0)207-050-6500; or Henry Lerwill, Pelham Public Relations - UK Media, +44(0)203-178-6242, or Philip Dennis, +44(0)207-743-6363, Pelham Public Relations - UK Media, all for Endeavour International Corporation