HOUSTON -- Tullow oil Plc. has had its second oil discovery offshore the Republic of Ghana with the deepwater Hyedua-1 well.
Fred.Olsen Energy'sBelford Dolphin deepwater drillship drilled the Hyedua-1 well in the Tano license in 1,530 m (5,020 ft) water depth 5.3 km (3.3 mi) southwest and down dip from the Mahogany-1 discovery well, which Anadarko announced in June 2007. Hyedua-1 was drilled to a TD of 4,002 m (13,130 ft) and encountered 40 m (130 ft) of net pay in a Cretaceous sandstone reservoir.
Initial data from the well indicates that the Hyedua-1 and Mahogany-1 wells are likely to represent a single continuous trap extending across the West Cape Three Points and Deepwater Tano blocks, Tullow says.
Planning is already under way to appraise the accumulation. Suitable vessels have been identified to carry out a 910-sq km (351-sq mi) high-resolution 3D seismic survey, covering the combined feature on both the Deepwater Tano and West Cape Three Points blocks as well as a program of up to three additional appraisal wells in late 2007.
Tullow operates the Deepwater Tano license with 49.95% interest. Partners on the block include Kosmos Energy and a subsidiary of Anadarko Petroleum Corp, with 18% interest each, Sabre Oil & Gas with 4.05% interest, and the Ghana National Petroleum Corp. with 10% carried interest.