Dry well near the Troll field in the North Sea

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 m, of which 197 m 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 m, of which 41 m were sandstone reservoir with poor to good quality. The Oseberg Formation is about 31 m thick, of which 25 m 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 m below sea level and was terminated in the Drake Formation in Lower Jurassic.

Water depth is 330 me. 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.

Read the article online at: https://www.oilfieldtechnology.com/drilling-and-production/13062023/dry-well-near-the-troll-field-in-the-north-sea/