Well 31/2-24 was drilled by Deepsea Stavanger. Photo: Odfjell Drilling

Equinor Energy AS, operator of production licence 923, has completed the drilling of wildcat well 31/2-24.

The well was drilled about three kilometres west of the Troll field in the North Sea and about 115 kilometres northwest of Bergen.

The primary exploration target for the well was to prove petroleum in Upper and Middle Jurassic reservoir rocks in the Sognefjord Formation in the Viking Group and the Tarbert, Ness and Etive formations in the Brent Group.

The secondary exploration target for the well was to prove petroleum in Middle Jurassic reservoir rocks in the Fensfjord Formation in the Viking Group and Oseberg Formation in the Brent Group.

Well 31/2-24 encountered the Sognefjord and Fensfjord formations in the Viking Group, with a total thickness of 514 metres, of which 197 metres were sandstone reservoir of moderate to good quality.

The Tarbert, Ness, Etive and Oseberg formations were encountered in the Brent Group. The Tarbert, Ness and Etive formations have a thickness of about 106 metres, of which 41 metres were sandstone reservoir with poor to good quality. The Oseberg Formation is about 31 metres thick, of which 25 metres were sandstone reservoir of moderate to good quality.

Data acquisition was carried out and the well is dry.

This is the sixth exploration well in production licence 923, which was awarded in APA 2017.

Well 31/2-24 was drilled to a vertical depth of 2558 metres below sea level and was terminated in the Drake Formation in Lower Jurassic.

Water depth is 330 metres. The well has been permanently plugged and abandoned.

Well 31/2-24 was drilled by Deepsea Stavanger, which will now proceed to drill wildcat well 30/11-15 in production licence 035 in the North Sea.

KeyFacts Energy: Equinor Norway country profile