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04/01/2012 Statoil Petroleum AS, operator of production licence 152, is in the process of completing the drilling of wildcat well 33/12-9 S. The well encountered oil.
The well was drilled about seven kilometres south of the 33/12-8 S oil/gas discovery on Skinfaks Sør, which is located southwest of the Gullfaks Sør field in the northern part of the North Sea. Skinfaks Sør was proven in 2002 and consists of several smaller structures.
The objective of the well was to prove petroleum in Middle Jurassic reservoir rocks (the Brent Group). The well encountered light oil in an 80-metre gross column in the upper part of the Brent Group, in rocks with good reservoir quality.
Preliminary estimates place the size of the discovery between 0.3 and 1.1 million standard cubic metres (Sm3) of recoverable oil equivalents. The plan is to tie-in the discovery to existing infrastructure in the Gullfaks area.
The well was not formation-tested, but data acquisition and sampling have been carried out to determine the petroleum system and oil/water contacts.
Well 33/12-9 S is the fourth wildcat well in production licence 152. The licence was awarded in the 12th licensing round in 1988.
Well 33/12-9 S was drilled to a vertical depth of 3722 metres below the sea surface, and was terminated in the Drake formation in the Middle Jurassic. Water depth at the site is 135 metres.
The well was drilled by the COSL Pioneer drilling facility, which will now proceed to the Oseberg area to drill wildcat well 30/6-28 S for production licence 53, where Statoil Petroleum AS is the operator.
Contact in the NPD
Eldbjørg Vaage Melberg, tel.+ 47 51 87 61 00