The semisubmersible platform for Statoil’s Gjøa field left the Aker Solutions Stord shipyard on 13 June for installation in the North Sea. Gjøa will be Statoil’s first floating platform supplied by power from shore and is estimated to reduce carbon emissions by 250,000 tons/yr.
The tow out to the field is expected to take 1 ½ days. The platform will then be connected to subsea installations and pipelines. Test production will be done after final trials and completion work are completed, and regular production is expected by Q4 2010. Gjøa, proven in 1989, holds estimated reserves of 82 million bbl of oil and condensate and 40 billion cu m of gas.
Gjøa is one of the largest ongoing field development projects in the North Sea. Aker Solutions designed, engineered and assembled the platform, which will connect to five subsea templates. The platform has a topside weight of 22,000 tons and hull dry weight of 15,000 tons. The deck measures 110 m long and 85 m wide, and the platform’s highest point is the flare tower at 143 m.
“It feels incredibly good to finally send the platform out to the field. Many millions of work-hours lie behind this milestone,” said Statoil’s vice president for the Gjøa field development, Kjetel Digre.