28/05/2013 Statoil Petroleum AS, operator of Grane Unit, is about to complete drilling of wildcat well 25/11-27. The well proved oil.
The well was drilled within licence 169 B2 about seven kilometres north of the Grane field in the central part of the North Sea, and about 150 kilometres west of Stavanger.
The objective of the well was primarily to prove petroleum in Paleocene reservoir rocks (the Heimdal formation), but also to find out if there could be communication with the Grane field in the event of a discovery.
The well encountered an oil column of about 20 metres in the Heimdal formation. Preliminary estimates of the size of the discovery are between 2.8 and 5.2 million standard cubic metres (Sm3) of recoverable oil. The licensees will consider various development alternatives based on oil quality and pressure communication with surrounding fields.
Extensive data acquisition and sampling have been carried out.
This is the fifth exploration well drilled by the licensees in Grane Unit. Well 25/11-27 was drilled to a vertical depth of 1865 metres below the sea surface and was terminated in the Shetland Group, most likely in the Lower Paleocene, but upper Cretaceous cannot be excluded. The well will now be permanently plugged and abandoned. Water depth is 126 metres.
The well was drilled by the Songa Trym drilling facility, which will now proceed to production licence 128 in the Norwegian Sea to drill appraisal well 6608/11-8 where Statoil is the operator.
Contact in the Norwegian Petroleum Directorate
Eldbjørg Vaage Melberg, tel. +47 51 87 61 00