Johan Sverdrup

Statoil has awarded an engineering, procurement and construction (EPC) contract to IKM Ocean Design for the Johan Sverdrup gooseneck spool and retrofit hot-tap tee on behalf of operator Gassco.

Gassco asset management executive vice-president Svein Birger Thaule said: "We believe this supplier will help us put in place a good and safe gas export solution for the field.

"The project will moreover be extremely important in ensuring gas deliveries for our Kårstø processing plant."

Located north of Stavanger, the Kårstø processing plant plays a key role in the transport and treatment of gas and condensate from areas on the Norwegian Continental Shelf and also receives gas from Åsgard and other fields in the Norwegian Sea through the Åsgard Transport trunkline.

Johan Sverdrup lies in the Norwegian North Sea and is considered one of the five largest oil fields on the Norwegian Continental Shelf.

With estimated resources of up to three billion barrels, the field is due to come on-stream in December 2019 and will continue producing for 50 years.

The field is located 40km south of Grane, 65km north of Sleipner and 140km west of Stavanger.

"The project will moreover be extremely important in ensuring gas deliveries for our Kårstø processing plant."

Gas from Johan Sverdrup will be exported to the plant through a new 18in pipeline that is tied into the Statpipe rich-gas leg from Statfjord using hot tapping and connection to a 30in retrofit tee.

The diverless installation would be carried out using hot tapping equipment from the pipeline repair system base in Haugesund.

Once Johan Sverdrup is operational, Gassco will serve as the operator and technical manager of the 156km pipeline from the riser platform on the field to the Statpipe leg.

Based on 2015 value, the investment costs in the initial phase of the field development are expected to be around Nkr117bn ($14.3bn).

Johan Sverdrup licence partners include Statoil (40.0267%), Lundin Norway (22.6%), Petoro (17.36%),
Det norske oljeselskap (11.5733%) and Maersk Oil (8.44%).


Image: Part of the gas export solution from the Johan Sverdrup field, the assignment will take about two years to complete. Photo: © Statoil.