Mahogany-4 assesses lateral extent of Jubilee off Ghana

Tullow Oil PLC said its Mahogany-4 appraisal well, which was drilled in the West Cape Three Points license off Ghana, has intersected light oil columns in sandstone reservoirs, encountering 43 m of net hydrocarbon pay.

Eric Watkins
OGJ Oil Diplomacy Editor

LOS ANGELES, Oct. 16 -- Tullow Oil PLC said its Mahogany-4 appraisal well, which was drilled in the West Cape Three Points license off Ghana, has intersected light oil columns in sandstone reservoirs, encountering 43 m of net hydrocarbon pay.

“Mahogany-4 is the eastern-most well on the Jubilee field to date and has been drilled to evaluate its lateral extent and to explore deeper potential reservoir targets,” Tullow said.

It said that the results of drilling, wireline logs, and samples of reservoir fluid confirm that the Jubilee field extends beyond this location, which is 3.3 km southeast of Mahogany-2 and 3.8 km northeast of Mahogany-3.

“Oil-bearing sands have been encountered on prognosis with 15 m of net pay in the main Jubilee reservoirs,” Tullow said.

Below the main Jubilee reservoirs, the well intersected 20 m of net oil pay in a new sand, a 4 m of wet gas sand and 4 m of net oil pay in Mahogany Deep-aged reservoirs.

The potential of these underlying reservoirs will be investigated with further exploratory wells in the area.

Mahogany-4 was drilled by the Atwood Hunter semisubmersible rig to a depth of 3,680 m in 1,079 m of water. Following the conclusion of operations, the rig will move to drill the J-03 Jubilee development well.

Also in the West Cape Three Points license, about 5 km southwest of the Mahogany-4 well, the Aban Abraham drillship has commenced drilling Mahogany Deep-2. The well will appraise the field’s southern extent and a result is expected in November.

Tullow has a 22.896% interest in the West Cape Three Points license and its partners are operator Kosmos Energy and Anadarko Petroleum Corp., 30.875% each; EO Group, 3.5%; Sabre Oil & Gas, 1.854%; and Ghana National Petroleum Corp., 10% carried interest.

Contact Eric Watkins at hippalus@yahoo.com.

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