Maersk Oil has awarded Subsea 7 a subsea, umbilical, riser and flowline (SURF) contract with a value in excess of USD 150 million for the Culzean development.
The ultra-high pressure, high temperature field, one of the largest gas discoveries offshore UK, is located in Block 22/25 of the Central North Sea at a water depth of approximately 90 metres.
52 Km Gas Export Pipeline
The contract scope includes project management, engineering, procurement, construction and installation of a 22" diameter 52 km gas export pipeline connected to the Central Area Transmission System (CATS), and a 3.6 km pipe-in-pipe (10" outer pipe and 6" 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 4" 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.
Seven Borealis
Project management and engineering work will commence immediately from Subsea 7's Aberdeen office. Offshore activities will utilise a number of Subsea 7 vessels including the highly versatile pipelay and heavy-lift vessel, Seven Borealis. Offshore operations are scheduled to commence in 2017.
Picture: Seven Borealis in the Port of Rotterdam (by TobiToaster).
