Offshore staff
LONDON -- Tullow Oil’s side track of the Owo-1 exploration well offshore Ghana has confirmed a major new oil field, the company says.
Owo-1, drilled by the semisubmersible Sedco 702 in 1,428 m (4,685 ft) water depth in the Deepwater Tano license, encountered 53 m (174 ft) of net oil pay. The side track, 0.6 km (0.4 mi) east of the discovery well, encountered an additional 16 m (52 ft) of net oil pay in the lower part of the same channel system.
Pressure data indicates this oil pay is in communication with the reservoirs penetrated in the Owo-1 well, and confirms at least 69 m (226 ft) of total net oil pay within a gross oil column of 200 m (656 ft).
Beneath the oil field, the latest effort also discovered 13 m (42 ft) of net condensate pay, with an additional 6 m (19.7 ft) of net gas pay logged in the deepest sand encountered. No water was found in any of the hydrocarbon bearing reservoirs in either well.
The Sedco 702 drilled the side track to a final depth of 3,998 m (13,117 ft). Following completion of logging operations the well will be suspended for future use in appraisal and development.
Tullow will keep the rig to drill the Onyina-1 exploration well in the same license, targeting a large Campanian prospect between Tweneboa and Jubilee fields.
The company operated the license in partnership with Kosmos Energy Ghana, Anadarko Petroleum, Sabre Oil & Gas, and the Ghana National Petroleum Corp.
09/13/2010
