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Wintershall completes successful appraisal well in the North SeaAsha Noor well finds between 20 and 40 million barrels of oil

Stavanger. Wintershall, the largest internationally active German crude oil and natural gas producer, announces an oil discovery in the central part of the North Sea about 200 kilometers off the coast of Stavanger. The own-operated Asha Noor appraisal wells 16/1-16 and 16/1-16 A in production licence PL 457 were drilled about 3 kilometers east of the 16/1-9 discovery well in the Ivar Aasen discovery and about 3 kilometers north of the Edvard Grieg field. Preliminary resource estimates range between 20 and 40 million barrels of recoverable oil. Extensive coring, sampling and data acquisition have been carried out.

The primary target for the main well 16/1-16 was to prove petroleum in Lower Cretaceous and Upper Jurassic reservoir rocks (Åsgard and Draupne Formations) along the west side of the Utsira High oil and gas region. The secondary target was to delineate the eastern extent of the Ivar Aasen oil discovery in Middle Jurassic to Upper Triassic reservoir rocks.

The main well 16/1-16 in the Åsgard formation encountered an approximately 90-meter gross aquiferous sandstone reservoir of variable quality. Furthermore, the well encountered a gross oil column of around 70 meters in the Hugin and Skagerrak formations, of which 28 meters were in a reservoir with very good quality in the Hugin formation. The oil-water contact was not encountered.

The 16/1-16 A sidetrack was drilled to the southeast of the main well. The well encountered a gross oil column of 30+ meters in the Hugin formation. This formation is about twice as thick as in the main well 16/1-16 and the reservoir quality was very good as expected. 

Asha Noor is Wintershall’s first well in the production licence PL 457, which was awarded in the APA 2007. The operator is Wintershall Norge AS with a share of 40%. The partners are E.ON E&P Norge AS with 20%, Bridge Energy Norge AS with 20% and VNG Norge AS with 20%. The wells 16/1-16 and 16/1-16 A were drilled to a vertical depth of respectively 2,722 and 2,683 meters below mean sea level and were terminated in the Permian Rotliegendes and the Triassic Skagerrak Formation. The wells were permanently plugged and abandoned. The water depth is 113 meters. The Bredford Dolphin drilling platform now transfers to Lundin for the drilling of 16/3-5 in PL 501.

Wintershall Holding GmbH, based in Kassel, Germany, is a wholly-owned subsidiary of BASF in Ludwigshafen. The company has been active in the exploration and production of crude oil and natural gas for over 80 years. Wintershall focuses on selected core regions, where the company has built up a high level of regional and technological expertise. These are Europe, North Africa, South America, as well as Russia and the Caspian Sea region. In addition, these operations are complemented by the company’s growing exploration activities in the Arabian Gulf. Today, the company employs more than 2,000 staff worldwide from 35 nations and is now Germany’s largest crude oil and natural gas producer. With the natural gas trading and transport subsidiaries it operates together with Russia’s Gazprom, the BASF subsidiary is also an important gas supplier on the German and European market.

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