OSLO -- Grenland Group is delivering four large subsea structures for StatoilHydro's Vega and Troll fields from its yard in Tønsberg, Norway. This week, the manifolds were installed in the templates by a large lifting vessel.
The three Vega subsea structures and the Troll O2 subsea structure, each weighing more than 500 tons (454 metric tons), are being completed, tested, and prepared for delivery. The subsea system for the gas and condensate field Vega will be tied in with the Gjøa field that will come onstream off the west coast of Norway next year. The Troll O2 system will be tied in to the Troll C platform, and is expected to increase the Troll recoverable reserves by 20 MMbbl of oil.