Mahogany appraisal well confirms down-dip extent of Jubilee

The Mahogany Deep-2 appraisal well offshore Ghana has confirmed the down-dip extent of the main Jubilee reservoirs and intersected two new light oil accumulations, Kosmos Energy says.

Offshore staff

LONDON -- The Mahogany Deep-2 appraisal well offshore Ghana has confirmed the down-dip extent of the main Jubilee reservoirs and intersected two new light oil accumulations, Kosmos Energy says.

Mahogany Deep-2, drilled 3 km (1.86 mi) from Mahogany-3, is the furthest down-dip Jubilee well in the West Cape Three Points license. The company reports that results of drilling, wireline logging, and samples of reservoir fluid indicate that the well encountered good quality hydrocarbon-bearing reservoir sandstones in three zones.

An interval of 12 m (39 ft) net pay has proved an extension of the main Jubilee reservoirs. In addition, a new shallower accumulation with 2 m (7 ft) net pay was encountered and supports exploration prospects in undrilled areas to the south and east.

In total, the well intersected 53 m (174 ft) of net reservoir sandstones, 20 m (66 ft) of which were in the Mahogany Deep section. These were found to be water bearing, but are not connected to the Mahogany Deep accumulation at Mahogany-3. Further extensions to the Mahogany Deep accumulation may exist to the south and east of Mahogany-3, the company says.

The well also encountered a new reservoir in a deeper stratigraphic level beneath the Mahogany Deep section. An oil sample was recovered from a 1-m (3-ft) zone, which has not been encountered in any other wells in the license to date.
Kosmos Energy plans to evaluate the new accumulations discovered by the well using recently reprocessed high resolution 3D seismic data. The company expects to drill further potential extensions of the Jubilee field and associated prospectivity in early 2010.

“Confirming the southerly extent of the main Jubilee reservoirs and encountering two new oil pools takes us another step closer to realizing the full potential of the Greater Jubilee Area,” says Angus McCoss, exploration director of West Cape Three Points license partner Tullow Oil. “Results from the current exploratory appraisal campaign are being integrated to define the resource base and the future phases of development beyond first oil in 4Q 2010.”

12/23/2009

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