Subsea 7 has been awarded a subsea, umbilical, riser and flowline (SURF) contract by Maersk Oil worth more than US$150 million for the Culzean development.
The ultra-high-pressure, high-temperature field, one of the largest gas discoveries offshore UK, is in Block 22/25 of the central North Sea in about 90m water depth.
The contract scope includes project management, engineering, procurement, construction and installation of a 22in-diameter, 52km gas export pipeline connected to the Central Area Transmission System (CATS), and a 3.6km pipe-in-pipe (10in outer pipe and 6in inner pipe) providing insulation for the transportation of the condensate to the in-field floating, storage and offloading facility (FSO).
The pipe-in-pipe will be laid with a 4in piggy-back line that will transport fuel gas to the FSO. Subsea 7 will also provide subsea structures, tie-ins to the Culzean platform facilities and pre-commissioning expertise.
Project management and engineering work will commence immediately from Subsea 7's Aberdeen office. Offshore activities will utilize a number of Subsea 7 vessels including pipelay and heavy-lift vessel, Seven Borealis. Offshore operations are due to start in 2017.
Phil Simons, Vice President UK and Canada, said: "This large project awarded by Maersk Oil for their Culzean field development, confirms our reputation as a world-class provider of reliable and cost-effective SURF solutions. The Seven Borealis has the ability to deliver fit-for-purpose performance demonstrating the optimum balance of cost-efficiency and capability. We look forward to collaborating with Maersk to ensure the safe and timely delivery of this significant gas production development."
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