Norway's Ministry of Petroleum and Energy approved Statoil's development and operation plan for two fast-track subsea developments—Stjerne and Vigdis North-East fields—offshore Norway. Separately, Statoil and its partners submitted to Norwegian authorities a 10 billion kroner plan for development and operation (PDO) of Skuld on Blocks 6608/10 and 6608/11 in the Halten Bank of the Norwegian Sea.
Stjerne, Vigdis North-East
Statoil will develop Vigdis North-East with a four-slot seabed template in about 920 ft of water tied back with a new flowline to the existing Vigdis B template, which ties back 7 km to the Snorre A platform.
Stjerne, previously called Katla, is in 310 ft of water and also will have a four-slot subsea template with two producing wells and two water-injection wells for maintaining reservoir pressure.
The oil from Stjerne will go to Oseberg South platform and the gas will be used for pressure support in Oseberg Omega North.
Statoil said with these approvals all four of its initial fast-track projects launched in January 2010 have been approved. Hyme and Visund South received approvals in June.
Vigdis North-East, discovered in 2009, is in the Tampen area of the Norwegian North Sea. Statoil expects to invest 4.2 billion kroner for the developing the field, which contains 25 million boe of recoverable resources.
The company expects to place the field on stream in 2012-13.
Stjerne, discovered in 2009, lies 13 km southwest of Oseberg South in the Norwegian Sea. Statoil expects to invest 5.4 billion kroner for developing the field, which contains 45 million boe of recoverable resource, and place it on stream in 2012.
Interest owners in Vigdis North-East are operator Statoil 41.5%, Petoro AS 30%, ExxonMobil Exploration & Production Norway AS 10.5%, Idemitsu Petroleum Norge AS 9.6%, Total E&P Norge AS 5.6%, and RWE Dea Norge AS 2.8%.
Operator Statoil holds 49.3% interest in Stjerne. The remaining interest is held by Petoro 33.6%, Total 10%, ExxonMobil 4.7%, and ConocoPhillips Skandinavia AS 2.4%.
Skuld development
Statoil estimates the Skuld development contains about 90 million boe, mostly oil. Skuld—formally Fossekall-Dompap—will produce through subsea templates to the Norne floating production, storage, and offloading vessel on Block 6608/10. Statoil expects production to start as early as yearend 2012.
Skuld will produce through three standard subsea templates with six production wells and three water injection wells and tie in to the Norne production ship with a 14-in. production flowline and umbilical.
The Skuld templates are 16 km and 26 km from the Norne FPSO.
Since starting to produce in 1997, Statoil has tied in several satellite fields to Norn. The new discoveries have contributed to extend the life of Norne to 2021 and possibly 2030, according to Statoil.
Skuld is the largest of the five fast-track projects on which Statoil has submitted PDOs. It expects the five projects to produce about 90,000 b/d in 2014, with Skuld contributing more than half the volume.
Fossekall, a 2010 discovery, lies in 352 m of water on Production License 128. The discovery well bottomed at 2,749 m below sea level in the Are formation, proving oil in that formation as well as in Ile and Tofte strata and gas in the Melke formation, all Jurassic.
Statoil reported the smaller Dompap discovery to the north of Fossekall in 2009. The well was drilled to 3,158 m below sea level in 334 m of water and proved an 110-m oil column in the Are formation.
Interest owners in PL 128 are operator Statoil 64%, Petoro AS 24.5%, and Eni Norge AS 11.5%.
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