25/2-10 S (Frigg-GammaDelta) is a discovery in the central North Sea, 20 kilometres east of the Frigg field. The water depth is 120 metres. The discovery was proven in 1986 on the Frigg Gamma structure. The reservoir contains oil and gas in sandstone of Eocene age in the Frigg Formation, at a depth of 1,900 metres. The resources also include the Frigg Delta structure, where well 25/2-17 drilled in 2009 proved oil at the same reservoir level. Various development solutions are being evaluated for Frigg-GammaDelta, which is being considered as part of a larger development in the area between the Oseberg and Alvheim fields.
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