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Gas/condensate discovery north of the Oseberg field in the North Sea - 30/6-30

Published by , Editorial Assistant
Oilfield Technology,

The well was drilled about 25 km north of the Oseberg field centre in the northern part of the North Sea, and 150 km northwest of Bergen.

The primary and secondary exploration targets for the well were to prove gas and condensate in Middle Jurassic reservoir rocks (in the Oseberg formation and Etive/Ness formations, respectively).

In the primary exploration target in the Oseberg formation, the well encountered a total of about 85 m of aquiferous sandstone, mainly with moderate to good reservoir quality. In the secondary exploration target, a total gas-condensate column of about 55 m was encountered in the Ness formation, whereof a 17m thick sandstone layer with moderate to good reservoir quality. The gas/water contact was not encountered. The Etive formation consists of 25 m of aquiferous sandstone, mainly with moderate to good reservoir quality.

Preliminary estimates place the size of the discovery between 0.4 and 2.7 million standard cubic metres (Sm3) of recoverable oil equivalents. Preliminary assessments indicate that the discovery is not currently profitable, but the licensees will assess the discovery together with other nearby discoveries/prospects with regard to further follow-up.

The well was not formation-tested, but extensive data acquisition and sampling were carried out.

This is the first exploration well in production licence 825. The licence was awarded in APA 2015.

Well 30/6-30 was drilled to a vertical depth of 3466 m below the sea surface and was terminated in the Dunlin group in the Lower Jurassic.

Water depth at the site is 120 m. The well will now be permanently plugged and abandoned.

Well 30/6-30 was drilled by the Transocean Arctic drilling facility which will now drill appraisal well 31/7-3 S in the northern part of the North Sea in production licence 740, where Faroe Petroleum Norge AS is the operator.

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