The Brae Alpha platform has moved into its thirteenth day in shut down as an investigation continue into the cause of a gas leak.
Marathon Oil has not yet confirmed how many people remain on board the platform in the North Sea, which is 155 miles from Aberdeen.
It is believed 73 workers are still on board.
The company said last night it was unable to provide an estimate of when production is likely to resume.
Earlier this week Marathon Oil said a “comprehensive” investigation was being carried out to establish what had happened before operations resume.
The Brae Alpha platform is among the North Sea’s oldest platforms at 32 years old.
When the incident happened ten days ago, the Maritime and Coastguard Agency was alerted to the leak after the platform had issued a distress call.
The incident also comes after the safety watchdog hit Marathon with an improvement notice following a leak on the platform in June.
In November, the Health and Safety Executive (HSE) said the incident had “put the health and safety of individuals on the platform at risk.”