Exploration well 34/8-18S in PL 120 was drilled by Equinor and partners Petoro, ConocoPhillips and Repsol from the Visund A platform with the Early Jurassic Statfjord Group as target.
The well encountered an oil column of about 115 metres in the upper and lower part of the Statfjord Group, with effective reservoir of 17 and 20m in sandstone mainly with moderate reservoir quality. In the upper part of the Lunde formation in the Upper Triassic, about 15 metres of aquiferous sandstone with poor reservoir quality was encountered. The oil-water contact was encountered in the lower Statfjord group at about 3170 metres below sea level.
The estimated size of the discovery is between 2.0 and 4.5 million Sm3 (12-28 mmb) of recoverable oil (Read here the NPD press release).
Equinor is pleased to have proven these profitable barrels that can be quickly tied in to existing infrastructure. “It will be natural to tie in the resources to the Visund A platform,” says Gunnar Nakken, Equinor’s senior vice president for Operations West in Equinor’s press release.
The Visund Field is located in the northern part of the North Sea, northeast of the Gullfaks field. It was discovered in 1986 and production started in 1999.
The reservoir in Visund consists of sandstones from the Late Triassic and Early Jurassic Lunde Formation and Statfjord Group, and of Middle Jurassic Brent Group. The reservoirs are in several tilted fault blocks with varying pressure and liquid systems. The reservoirs lie at a depth of 2,900-3,000 metres. Reservoir quality is generally good in the main reservoirs (Norwegian Oil and Gas).