VIDEO: Norway’s largest offshore jacket

Norwegian oil major Statoil has shared a video detailing the specs of the first steel jacket for the Johan Sverdrup field, which will be the largest on the Norwegian Continental Shelf.

Offshore Energy Today reported earlier this week on the sailaway of the jacket from the shipyard in Verdal.

The final destination of the jacket is the Johan Sverdrup field which covers an area of around 200 square kilometers on the Utsira High in the central part of the North Sea, 140 km west of Stavanger.

The jacket is the largest ever built for use on the Norwegian shelf and weighs a whopping 26,155 tonnes. It is 140 meters high and its footprint on the seabed will be 94 meters by 64 meters. The jacket will be fastened by 24 poles weighing a total of 9,008 tonnes.

The largest jacket on the NCS was built at Kværner’s shipyard in Verdal, where it was named Aegir back in June. The same company will build two of the three remaining Johan Sverdrup jackets meant for the drilling and processing platforms. Dragados Offshore was put in charge of building the fourth jacket, for the utility and accommodation platform.


Johan Sverdrup field


Statoil is the operator of the Johan Sverdrup development with a working interest of 40.0267 percent. The license partners are Lundin Norway, Petoro, Aker BP, and Maersk Oil with 22.6, 17.36, 11.5733, and 8.44 percent interests, respectively.

The Plan for Development and Operation for Johan Sverdrup Phase 1 was approved by the Ministry of Petroleum and Energy on August 20, 2015. The first phase is currently estimated at NOK 99 billion ($12.3 billion), a reduction of NOK 24 billion ($3 billion) since the PDO was submitted.

Gross resources for the entire field are estimated to between two and three billion barrels of oil equivalent making it one of the five largest fields ever discovered on the NCS. Lundin estimates that, once the field reaches the expected plateau rate of 660,000 barrels per day, production from the field will amount to about 25 percent of total Norwegian oil production.

Offshore Energy Today Staff

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