Skirne, which also includes the Byggve deposit, is an offshore gas field in the North Sea located 24 km east of the Heimdal gas field and 140 km from Stavanger, Norway. The depth of the water in the field area is 120 m. Both Skirne and Byggve are considered satellites to Heimdal field and are connected to it by subsea pipelines. TotalFinaElf which is the operator had received the approval from Norwegian Ministry of Petroleum and Energy for development of the fields in 2002. The company holds 40% interest in the project. Other stakeholders are Petoro and Centrica. Both Skirne and Byggve combined have an estimated 230 Gcuft of natural gas and about 10 million barrels of condensate.

Skirne deposit

The Skirne field was discovered in 1990. It consists of Middle Jurassic sandstones of the Brent Group. Skirne deposit lies 2370 m deep.

Byggve deposit

The Byggve field is located 16 km east of the Heimdal gas field and was discovered in 1991. and consists of Middle Jurassic sandstones of the Brent Group. Byggve deposit lies 2900 m deep.

Production

Production at Skirne and Byggve started in 2004. Expected project duration is 6 years and produce 140 Mcuft/d of gas and 7000 oilbbl/d of condensate. The fields are interconnected through two single-well tie-backs and transported to treatment facilities at Heimdal Gas Center, from which the processed gas is then exported to the United Kingdom through the Vesterled pipeline. Total investment including the Vale satellite has been nearly 4 billion NOK which also included modifications on Heimdal, drilling operations, subsea templates and pipelines.