Endeavour Completes Redemption of 6% Senior Notes

HOUSTON, April 25, 2011 - Endeavour International Corporation (NYSE: END) (LSE: ENDV) is pleased to
announce that it has completed the previously announced redemption of all of
its outstanding $81.25 million of 6% Senior Notes due 2012 (the "Notes".) The
Company redeemed the Notes pursuant to their terms at 100% of their principal
amount plus accrued and unpaid interest.

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

Mike Kirksey, +1-713-307-8700, or Darcey Matthews, +1-713-807-8711, both of Endeavour - Investor Relations