Jumbo Offshore to install protection structuresProjects and Operations // May 3, 2011
In June 2011, Jumbo’s DP2 heavy lift vessel Fairplayer will install four subsea protection structures for production flowlines at a depth of 600m in the Laggan and Tormore fields.
These gas condensate fields, owned by Total and Dong Energy, are located 125km northwest of the Shetland Islands. The region contains approximately 17 per cent of the remaining UK oil and gas reserves. The subcontract, commissioned by client Allseas, will combine transport and installation, Jumbo Offshore’s hallmark.
The fields’ subsea production and pipeline system is the deepest system in UK waters and includes two 18in 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.
Fairplayer will mobilize in Rotterdam, 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 tonnes to 270 tonnes and measure 38m x 21m x 6m.
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 in a single voyage.
After project completion Jumbo plans to keep Fairplayer in the North Sea area for other installation opportunities.