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Idemitsu Petroleum Norge announces dry well in the North Sea - 35/7-1 ST2

26 Jul 2011
Idemitsu Petroleum Norge, operator of production licence 377 S, has completed the drilling of wildcat well 35/7-1 ST2. The well was drilled about seven kilometres west of the Vega field in the North Sea.

The primary exploration target for the well was to prove hydrocarbons in Middle Jurassic reservoir rocks (the Brent group). The secondary exploration target was to prove hydrocarbons in the Cook formation from the Early Jurassic Age. The well encountered both the Brent group and the Cook formation, but both had poorer reservoir quality than expected. Data acquisition and sampling have been carried out, and this has been classified as a dry well.

The well is the first wildcat well in production licence 377 S, which was awarded in APA 2005.

The well was drilled to a vertical depth of 4773 metres below the sea surface, and was terminated in the Dunlin group from the Early Jurassic Age. The water depth at the site is 386 metres. The well will now be permanently plugged and abandoned.

Well 35/7-1 ST2 was drilled by the Aker Barents drilling facility, which will now proceed to production licence 482 in the Norwegian Sea.