Endeavour Provides Rochelle Update

Endeavour Provides Update on the Rochelle Field and Confirms Q4 2013 Production Guidance HOUSTON, Jan. 6, 2014 -- Endeavour International Corporation (NYSE: END) (LSE: ENDV)("Endeavour" or the "Company") today announced an update on the current production from the first well (W1) atthe Rochelle field and the timing of the start-up of the second production well (E2). Current gross production from the W1 well is 65 - 70 million cubic feet of gas per day with an additional 2,500 -3,000 barrels of oil equivalent per day ("boepd") of liquids production, 6,000 - 7,000 boepd net to Endeavour'sworking interest in the field. The first Rochelle well, W1, came on-line in October of 2013. Due to continued periods of inclement weather in the U.K. North Sea, timing of first production from the E2 wellhas been delayed from end of December to the second week of January. The Skandi Achiever, the vesselhandling the final hook-up of the Xmas tree to the East Rochelle manifold, is prepared to finish the installation assoon as the weather window opens. Upon the completion of the hook-up by the Skandi Achiever, the E2 well willcommence production. The combined production from the E2 and W1 wells is expected to far exceed the capacitylimits allowed over the Scott platform. Endeavour has a 44% working interest in the Rochelle field, which is located in blocks 15/26b, 15/26c and 15/27in U.K. Central North Sea. The Company also reconfirmed its guidance of 12,000 - 13,000 boepd for the fourth quarter of 2013. Endeavour International Corporation is an international oil and gas exploration and production company focusedon the acquisition, exploration and development of energy reserves in the North Sea and United States. For moreinformation, visit www.endeavourcorp.com. CONTACT: Endeavour - Investor Relations, Darcey Matthews, 713-307-8711, or Pelham Public Relations - UKMedia, Philip Dennis, +44 (0)207 861 3919, Henry Lerwill, +44 (0)207 861 3169