Statoil to Complete Delineation Well of Aldous Major South

Statoil, operator of production license 265, is about to complete drilling of the 16/2-10 delineation well.

The discovery, 16/2-8 (Aldous Major South), was proven in August 2011 in Upper and Middle Jurassic reservoir rocks with the same oil/water contact as in the 16/2-6 (Avaldsnes) discovery well, which was proven in September 2010. The 16/2-10 well was drilled about four kilometers north of 16/2-8.

The primary exploration target for 16/2-10 was to delineate the discovery and the well confirmed the extent towards the north. The secondary exploration target was to investigate the possibility for reservoir quality and petroleum in Upper Cretaceous (the Shetland group) and in Upper Triassic (Skagerrak formation).

Well 16/2-10 encountered a 65-meter oil column in Upper to Middle Jurassic reservoir rocks. The oil/water contact is about 13.5m deeper than in the 16/2-8 and 16/2-6 wells. The reservoir is thicker than expected and has uncommonly good reservoir quality. The gas/oil ratio is 42.6 and 39.6 Sm3/Sm3 and the density has been calculated at 0.82 g/cm3, same as in well 16/2-8.

In the secondary exploration targets, rocks with very limited reservoir quality and without petroleum were encountered.

The well is not formation tested, but extensive data acquisition and sampling have taken place.

The well is the seventh exploration well in production license 265. The license was awarded in the North Sea Awards in 2000.

16/2-10 was drilled to a vertical depth of 2066 meters below the surface and was terminated in the Skagerrak formation in Upper Triassic. The water depth is 115 meters. The well will now be permanently plugged and abandoned.

Well 16/2-10 was drilled by the Transocean Leader drilling facility, which will now proceed to the Troll field in the northern part of the North Sea to drill production wells on the field, where Statoil Petroleum AS is the operator.

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