Appraisal drilling resumes at SNE offshore Senegal

Offshore staff

MELBOURNE, Australia – The Ocean Rig Athena drillship has re-entered the second appraisal well on the Cairn Energy-operated deepwater SNE oil field, 100 km (62 mi) offshore Senegal.

SNE-3, 3 km (2 mi) south of the SNE-1 discovery well, follows directly from the recent SNE-2 which flowed 8,000 b/d constrained (more than 10,000 b/d on an unconstrained basis, according to partner FAR).

The current well, in around 1,180 m (3,871 ft) of water, will be drilled to a TVDSS of roughly 2,782 m (9,127 ft). The program will likely include coring, logging, and flow testing. Wireline logs should then be run followed by drillstem testing.

The main aims of the appraisal campaign are to prove a minimum economic field size for SNE of 200 MMbbl recoverable, and to discover, and to determine flow rates for a future development.

Thereafter the rig will drill BEL-1 well, evaluating the untested Buried Hills play to test the Bellatrix exploration prospect. This well will also appraise the northern portion of SNE.


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