Statoil Resumes Production at Troll C

Norwegian oil major Statoil announced Monday that production has resumed at its Troll C platform in the North Sea after it was forced to shut down the field due to the discovery of corrosion in some of its tanks.

On Thursday, Statoil reported that the Troll C field would remain shut for days after discovering corrosion during a routine inspection of two tanks that are used to treat gas. Statoil said that the corrosion was a well-known problem that occurred under insulation.

On Monday the company said that a "great effort" had been made over the weekend to plan the repair work and that it had also looked into alternative production methods. According to Troll C's head of production, Rune Adolfsen, the company arrived at a solution that involves the reinjection of untreated gas into the reservoir and production was resumed overnight Saturday.

"We assume that this method will allow us to produce at around 70 percent of full capacity during the repairs," Adolfsen added in a company statement.

Troll C is one of three platforms at the Troll field and produces around 120,000 barrels of oil per day and 371 million cubic feet of gas per day, according to the company. 

A former engineer, Jon is an award-winning editor who has covered the technology, engineering and energy sectors since the mid-1990s. Email Jon at


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