DeepOcean scoops riser installation work from Statoil

Edda Freya
Edda Freya

DeepOcean AS, a subsidiary of DeepOcean Group Holding BV, has been awarded the Riser Installation contract for the Kristin and Heidrun platforms, located in the Norwegian Sea, by Statoil.

The modification of these platforms is required in preparation of a possible tie-back from the near-by Maria-development in the Norwegian Sea that is operated by Wintershall. The offshore work includes the installation of risers as well as dynamic umbilical and cable. The installation operations will be performed by the new build construction and installation vessel Edda Freya that is scheduled to join the DeepOcean fleet in the first quarter of 2016. Additional support will be provided by a light construction vessel from DeepOcean’s fleet for the offshore campaign.

The offshore work, scheduled for the third quarter of 2016, includes the preparation of subsea infrastructure and installation of a dynamic control umbilical, a direct electrical heating (DEH) cable and optional change–out of a production riser on Kristin semi-submersible platform. A water injection riser will be installed on the Heidrun Tension Leg Platform.

“When committing to the Large Construction Vessel Edda Freya  in 2013 we were confident that DeepOcean’s reputation as the leading diverless subsea IMR contractor in the Greater North Sea would provide the foundation for innovative, competitive and reliable performance in SURF projects. This project success relies on timely execution of complicated installation within close proximity of the Kristin and Heidrun Floating Production Units.

“The planned operations within the intricate existing riser configuration demands high precision and operational reliability. We are appreciative of Statoil again recognizing DeepOcean’s ingenuity and cost efficient solutions in times of strong cost focus across the subsea value chain,” says Ottar Mæland, DeepOcean’s EVP Greater North Sea.

Vessel

The new vessel “Edda Freya” is of SALT 304 design. Key vessel dimensions are; a length of 149.8 metres, a width of 27 metres, and 2,300 m2 of total deck space. According to DeepOcean, the vessel is specially designed and equipped to suit the Greater North Sea market with the fuel saving environmentally friendly Siemens BlueDrive PlusC propulsion control technology and DP3 positioning system. The mission equipment will be a 150T dual tensioner vertical lay system and a 3000 tons carousel situated below deck.

The 600 tons active heave compensated knuckle boom main crane has extended reach. The accommodation facilities will have a capacity of 140 persons.

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