Super stainless shows savings for Statoil
15 Jan 2000
Super duplex stainless steel tubing from Sandvik Steel is set to solve an environmental problem for Norwegian offshore operator Statoil, and make significant savings at the same time.
The SAF 2507 grade tubing is to be used to pump carbon dioxide back down a well in the Sleipner West oil field in the North Sea. The £2million order is for 7in and 9 5/8in o.d. tubing, but Statoil will recover this outlay by not having to pay the Norwegian tax on CO2 emissions.
To produce a saleable gas from the field, CO2 content has to be reduced from about 9 to 2.5 per cent. The surplus will now be pumped back into the well.
Various lengths of the tubing have been delivered by Sandvik to Mitsubishi in Aberdeen for threading and coupling.
The Sleipner West field is about 250km west of Stavanger and has recoverable reserves estimated at 185million barrels of oil and 10million tonnes of natural gas. Production is from a wellhead platform on the field and a processing platform 12km away close to Sleipner A, the fully integrated drilling, production, processing and accommodation platform in the Sleipner East field.
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