6608/10-18

Well 6608/10-18 was drilled to appraise the Cape Vulture discovery made by 6608/10-17 S on the Revfallet Fault Complex in the Norwegian Sea. The Cape Vulture Discovery consists of three Inta-Lange Formation sands, named the Cape Vulture Upper, Main, and Lower. The primary objective for 6608/10-18 was to test the hydrocarbon potential and hydrocarbon contacts in the Cape Vulture Main and Lower sandstones.

Operations and results

Appraisal well 6608/10-18 was spudded with the semi-submersible installation Songa Encourage on 16 July 2018 and drilled to TD at 3469 m in the Late Jurassic Melke Formation. Operations proceeded without significant problems. The well was drilled with seawater and hi-vis pills down to 1350 m and with Enviromul oil-based mud from 1350 m to TD.

A thin water bearing Cape Vulture Upper sand without shows was penetrated from 3038 to 3041 m. Cape Vulture Main came in at 3078 m, 16 meters shallower than prognosis, and with a gross thickness of 26 meter. Good reservoir quality with an ‘oil-down-to’ situation was observed in Cape Vulture Main. Cape Vulture Lower came in at 3122 m, 26 meter (TVD) shallower than prognosed. The Cape Vulture Lower reservoir was oil-bearing as well but was only 4 meters thick and of moderate to poor quality. Oil shows were described in the oil-bearing reservoir sections, but nowhere else in the well.

One core was cut i