The Petroleum Safety Authority of Norway (PSA) has given Det norske oljeselskap ASA consent to use the Transocean Winner mobile drilling facility to drill two new subsea production wells on the Alvheim field.
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The Transocean Winner. From PSA. |
The wells, 24/6 K-6 and 24/6 A-5 are located in Blocks 24/6 and 25/4 in the central part of the North Sea, west of Heimdal and close to the boundary with the UK sector.
The consent also covers workover of production well 24/6 B-2.
The Alvheim field has been developed using a floating production, storage and offloading (FPSO) unit and subsea wells. Oil is stored in the production facility and exported by tanker. Gas is exported through a pipeline connected to a pipeline system on the UK shelf.
Water depth in the area is 120-130m. Drilling is scheduled to start in February 2015 and the activities associated with the first well are estimated to last 139 days.
Production on the field began in 2008.
Transocean Winner is a semisubmersible facility of the GVA 4000 type, built at Gøtaverken Arendal in Gothenburg in 1983 and significantly upgraded in 2006. The facility is owned and operated by Transocean Ltd., registered in the Marshall Islands and classified by DNV GL.
Det norske is the operator of the Alvheim field, following the company's purchase of Marathon Oil Norge AS, the field's former operator.
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