Endeavour International Corporation announced a successful up-dip appraisal of the Rochelle undeveloped discovery in Block 15/27 of the UK North Sea. Endeavour holds a 55.6 percent interest in the well and is operator for the block. Nexen Petroleum U.K. Limited is a joint venture participant and holds 44.4 percent interest. The Rochelle 15/27-11 appraisal...