The oil platform Statfjord A is seen in the Norwegian sector of the North Sea in this undated file photo. An oil spill at the large Statfjord oilfield in the North Sea shut about 138,000 barrels per day of production on May 24, 2008 and triggered the evacuation of workers, but the leak has been stopped, operator StatoilHydro said. REUTERS/Scanpix/Oddvar Walle Jensen (NORWAY) NO COMMERCIAL USE. NORWAY OUT. NO COMMERCIAL OR EDITORIAL SALES IN NORWAY. NO COMMERCIAL OR BOOK SALES.