Endeavour-1 was located on a seismically defined NE-SW trending anticlinal feature situated offshore, approximately 10 nautical miles SE of Oamaru in the Canterbury Basin. The well encountered no significant hydrocarbon indications and was terminated at a TD of 8993 ft BDF in tight, very hard, fractured and slickensided, very fine grained marine sandstones of Upper Cretaceous age. Endeavour-1 established: a) The existence of a major intra-Tertiary unconformity which has cut out sediments of uppermost Eocene to lowermost Miocene age. These are the equivalent of the onshore McDonald and Totara carbonates; b) The presence of 400 ft of basaltic tuff at the base of the Palaeocene to Lower Eocene mudstone/siltstone sequence; and c) The presence of a considerable thickness of poorly sorted generally clean sandstones within the Upper Cretaceous coal measures sequence.
syndication_user created the Report Endeavour-1 Well Completion Report
