Exhibit 99.1

Endeavour International Corporation Updates Progress in Advancing North Sea
Strategy

     HOUSTON--(BUSINESS WIRE)--Aug. 24, 2004--In its first stockholder meeting
since assuming new leadership and expanding its scope and objectives, Endeavour
International Corporation (AMEX:END) today reported that significant progress
has been made in establishing a base for exploratory activities in the North Sea
and restructuring the company to participate in one of the world's most prolific
oil and gas producing basins.
     "In less than six months, we have transformed Endeavour into an
exploration-focused independent energy company operating in a region that offers
unprecedented opportunities for niche players," John N. Seitz, co-chief
executive officer, told the group that gathered in Houston. "We submitted eight
applications covering 21 blocks during the United Kingdom's 22nd Licensing Round
in July and expect the results to be formally announced in the next few weeks.
Our ability to generate multiple high-quality prospects in such a short time can
be attributed to the excellent exploratory team that we have assembled and our
proprietary access to the newest seismic data available for the area."
     "We believe that we are positioned to develop a sizeable acreage position
from which to begin a drilling program by the first half of 2005," added William
L. Transier, who serves as co-chief executive officer with Seitz. "Our objective
remains to have first production resulting from exploration success in place
within 12 to 18 months of our first discovery. In addition, we continue to
pursue alliances with other companies with North Sea assets to jointly explore
and develop already held properties."
     The pair also reiterated their confidence in the company's ability to
create stockholder value through the execution of a North Sea-focused business
strategy. "With the current political unrest contributing to rising oil and gas
prices and concerns about supply shortages, we are building an exploration and
development base in not only a highly productive region but a stable one as
well," continued Seitz. "We have been particularly pleased with the steps taken
by the national governments to increase oil and gas activity through a favorable
business environment."

     Significant milestones achieved since the reorganization in February and
reviewed during the meeting include:

     --   Listing on the American Stock Exchange - Endeavour stock began trading
          on the American Stock Exchange on June 15, 2004. The AMEX provides
          added liquidity for the stock and creates greater interest in the
          stock among current and potential investors.

     --   The appointment of two new directors - Since the restructuring, Nancy
          K. Quinn, principal of Hanover Capital, and Barry J. Galt, former
          chairman and chief executive officer of Seagull Energy and a director
          of three energy-related companies, have joined the board of directors.
          At the meeting, the company's slate of directors including Quinn,
          Galt, Seitz, Transier and John B. Connally III, who was already a
          member of the board, were formally elected.

     --   The sale of United States interests - As part of its asset
          restructuring, Endeavour has now completed the sale of all its
          interests in oil and gas properties in the United States.

     --   Approval of development program in Thailand and continued appraisal
          drilling - Endeavour has retained its interest in a limited liability
          company that holds an interest in the Phu Horm Gas Field Project, an
          onshore gas discovery in northern Thailand. In May, the project was
          approved as a production area by the Thailand Department of Mineral
          Fuels. The drilling of two additional appraisal wells is underway and
          expected to be completed in the third quarter. A gas sales agreement
          is in place to provide gas from the area beginning in early 2006 to
          the existing Nam Phong power plant. In addition, Endeavour holds an
          interest in two exploration licenses in proximity to the Phu Horm
          Project.

     --   Filing of Form S-3 Registration Statement - Fulfilling its obligation
          under certain Registration Rights Agreements, Endeavour has filed a
          registration statement with the Securities and Exchange Commission to
          register for resale approximately 40 million shares of common stock
          owned by current stockholders.

     Endeavour International Corporation is an international oil and gas
exploration and production company primarily focused on the acquisition,
exploration and development of energy reserves in the North Sea sectors of the
United Kingdom and Norway. The company also holds an interest in a gas
development project in Thailand. 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 of as of the date made. Such statements are subject to
assumptions, risk and uncertainty. Actual results or events may vary materially.

     CONTACT: Endeavour International Corporation, Houston
              Janice Aston White, 713-307-8780