Statoil said normal production has resumed at its Statfjord A platform after an incident last week led to its shut down.
The company has halted production after a fire in the utility shaft on October 16th.
The incident came at the same time as two other incidents within a few day period.
Earlier this week hundreds of workers had been called to muster on the Snorre A platform after a suspected gas leak.
A spokesman for the Norwegian operator said production was gradually worked up over the weekend.
The Petroleum Safety Authority (PSA) and Statoil have both initiated investigations.
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