Grane gives up heavy Norway oil

摘要

Careful pre-planning and intelligent use of proven technology optimize reservoir recovery. Norsk Hydro used technology applied and honed at its Troll and Oseberg fields offshore Norway to maximize recovery from Grane, the Norwegian North Sea's heaviest oil field. In many respects, Grane field, in Block 25/11 of the Norwegian sector of the North Sea about 115 miles (185 km) west of Haugesund, is a beautiful reservoir. It lies in 420 ft (128 m) of water at a total depth of 5,578 ft (1,700 m). The 10-sq-mile (27-sq-km) reservoir has an average pay thickness of 164 ft (50 m) with an average porosity of 33% and average permeability of 5 to 10 Darcies.