Ocean Rig Athena to drill three wells offshore Senegal

Offshore staff

MELBOURNE, Australia – FAR says the Cairn Energy-led partnership has contracted the drillship Ocean Rig Athena for three exploratory wells offshore Senegal.

Two will appraise last year’s deepwater SNE discovery to establish the field’s size and commerciality as soon as possible. FAR estimates the minimum economic resources for a standalone development at around 200 MMbbl.

The third well will be on a previously undrilled prospect – a commercial find could be tied back to a production hub on SNE. Three possibilities are Bellatrix, Soleil, and Sirius. The Bellatrix prospect is a yet to be drilled Buried Hills play that exhibits a strong seismic amplitude response, whereas Soleil and Sirius are the same play type as SNE.

FAR estimates a potential 1.5 Bbbl of gross prospective resources in various prospects within subsea tieback distance to SNE.

Additionally, the partners plan a 2,400-sq km (926-sq mi) 3D seismic survey over the Sangomar and Rufisque blocks, designed to close eastern boundaries of existing prospects and leads and define a prospect inventory to the north and the east.

South of Senegal, the government of Guinea-Bissau has approved a two-year extension of a concession in which FAR is a partner until late November 2017.

The joint venture has acquired additional 3D seismic over the shelf edge to image prospects that are potentially analogous to the SNE discovery. Their focus is on the large Atum prospect. The processed data should be delivered later this year.


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