Spudded in November 2015, Cairn Energy PLC’s SNE-2 appraisal well was successfully tested in two intervals offshore Senegal on the Sangomar Block (OGJ Online, Dec. 10, 2015).
Drillstem tests over a 12-m interval flowed 8,000 bo/d through a 24/64-in. choke, the company said. A second 15-m interval flowed 1,000 bo/d through the same size choke, however, the company said this oil was low quality “heterolithic” pay.
Following this first successful appraisal well, Cairn expects to revise its resource estimates for SNE field, which lies 100 km offshore Senegal.
The tests confirm correlation of the principle reservoir units between SNE-1 and SNE-2 with the primary reservoirs occurring in the gas cap as predicted, the company said.
The company recovered 216 m of continuous core across the entire reservoir interval. Similar oil-down-to and oil-up-to depths were verified in SNE-2 (103 m gross) with those in SNE-1 (95 m gross).
The SNE-2 well was drilled in 1,200 m of water to a total depth of 2,800 m. It lies some 3 km to the south of Cairn’s previous SNE-1 discovery well (OGJ Online, Nov. 19, 2014). The company is now planning its second appraisal well, SNE-3.
Project partners are Cairn 40%, ConocoPhillips 35%, FAR 15%, and Senegal state oil concern Petrosen 10%.