Last week the jacket for the Johan Sverdrup oil & gas riser platform was installed by Thialf crane vessel owned by Heerema Marine Contractors (HMC). Weighing a good 26,000 tonnes the jacket is the largest on the Norwegian continental shelf (NCS).
The jacket is stretching 140 metres from the seabed, where it covers an area measuring 94 times 64 metres. It is attached to the seabed by 24 poles weighing more than 9000 tonnes in total.
The topside is scheduled for installation next year, and production from the field is to start at the end of 2019. Plateau production is estimated at 40% of NCS oil production. Expected field life is 50 years and the ambition is a world class recovery rate of 70%. Recoverable resources are estimated to be between 2 and 3 billion barrels of oil equivalent.
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