Dry wells in the North Sea (35/10-14 S and A)

The wildcat wells (35/10-14 S and 35/10-14 A) are the first to be drilled in production licence 1185, which was awarded in 2023.

The wells were drilled by the Deepsea Stavanger rig.

Geological information

The primary exploration target for the wells was to prove petroleum in Upper and Middle Jurassic reservoir rocks in the Kvernbit prospect (Viking Group) and the Mimung sør prospect (Brent Group), respectively. The secondary exploration target was to prove petroleum in the Cook Formation in the Lower Jurassic.

In the primary exploration target in well 35/10-14 S, the well encountered more than 80 metres of sandstone reservoir in the Upper Jurassic with poor reservoir properties. The Brent Group was 193 metres thick, 51 metres of which were sandstone layers with poor reservoir properties. The Cook Formation was 77 metres thick, 18 metres of which were sandstone layers, mainly with poor reservoir properties.

In well 35/10-14 A, the Tarbert, Ness, Etive and Rannoch formations were encountered with a total thickness of 163 metres, 63 metres of which were sandstone layers with poor reservoir properties. Extensive data acquisition was carried out in both wells, including core sampling in well 35/10-14 A.

Well 35/10-14 S was drilled to respective vertical and measured depths of 4885 metres and 4925 metres below sea level, and was terminated in the Johansen Formation.

Well 35/10-14 A was drilled to respective vertical and measured depths of 4275 metres and 4710 metres below sea level, and was terminated in the Rannoch Formation in the Mid Jurassic.