SMOE, Subsea 7 clinch North Sea Culzean topsides/subsea contracts

Offshore staff

SINGAPORE – Maersk Oil has issued two major contracts for its Culzean high-pressure/high-temperature gas/condensate field development in the UK central North Sea, a day after confirming that the project would go ahead.

Sembcorp Marine subsidiary SMOE has won a $1 billion-plus engineering, procurement, and construction contract covering the topsides for the central processing facility, wellhead platform and utilities and living quarter platform, and two connecting bridges.

The three-platform complex will be installed in 90 m (295 ft) of water.

SMOE’s Sembcorp Marine Admiralty Yard in Singapore will handled the bulk of the fabrication, with Sembmarine SLP in Lowestoft, eastern England, handling a power generation module, the two bridges and a flare.

Subsea 7 has received a $150 million-plus subsea, umbilical, riser, and flowline contract.

Work scope includes project management, engineering, procurement, construction and installation of a 22-in., 52-km (32-mi) gas export pipeline connected to the existing Central Area Transmission System; and a 3.6-km (2.2-mi) pipe-in-pipe (10-in. outer pipe and 6-in. inner pipe) providing insulation for transportation of condensate to the in-field FSO vessel.

The pipe-in-pipe will be laid with a 4-in. piggy-back line that will transport fuel gas to the FSO. Additionally, Subsea 7 will provide subsea structures, tie-ins to the Culzean platform facilities, and pre-commissioning.

All project management and engineering will take place in Aberdeen, while the company will deploy various vessels from its fleet for the installations (due to start in 2017), including the pipelay/heavy-lift vessel Seven Borealis.

Culzean could provide around 5% of the UK’s total gas needs by 2020/21.



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