In June 2011, Jumbo’s DP2 Offshore Heavy Lift Vessel Fairplayer will install four subsea protection structures for production flowlines at 600 m water depth in the Laggan & Tormore fields.
These gas condensate fields, owned by Total and Dong Energy, are located 125 km north-west of the Shetland Islands. This region contains approximately 17% of the remaining UK oil and gas reserves. The subcontract, commissioned by client Allseas, will combine transport and installation, Jumbo Offshore’s hallmark.
Deepest system in UK waters
The fields’ subsea production and pipeline system is the deepest system in UK waters and includes two 18-inch production flowlines. The flowlines will connect the subsea production facilities to the onshore processing terminal at Sullom Voe (Shetland). The two flowlines require protection structures at the Tormore starting point and at the Laggan tie-in location.
Scope of work
HLV Fairplayer will mobilize in Rotterdam, e.g. taking temporary accommodation units onboard (max. 65 persons) and preparing its Deepwater Deployment System (DDS). The four structures, composed of six elements, vary in weight from 180 t to 270 t and measure 38 x 21 x 6 m. Fairplayer will make two consecutive trips. Each trip Jumbo will transport and install two structures in three lifts. Using its DDS, the structures will be installed at 600 m water depth in a single voyage.
After project completion Jumbo plans to keep HLV Fairplayer in the North Sea area for other installation opportunities.
