Gas exports from the Fulmar pipeline have now restarted after a suspected gas leak caused a temporary shutdown.
Oil major Shell said deepsea divers had completed subsea work with Remotely Operated Vehicles (ROVs) to isolate the Curlew (Floating Production, Stroage and Offloading vessel (FPSO) by closing two valves on the interconnecting pipeline.
An investigation had been launched earlier in the week after a suspected gas leak.
Shell, the Health and Safety Executive (HSE) and the Department of Energy and Climate Change (DECC) will review the incident, which happened earlier this week close to the Curlew Floating Production, Storage and Offloading vessel (FPSO).
A spokeswoman for Shell previously said the suspected leak from the FPSO, which is 130 miles south east of Aberdeen, was detected several hundred metres away from the vessel.
Early indications were that the escape had occurred from the subsea infrastructure close to the FPSO, which is connected to the Fulmar Gas Line exporting gas to the St Fergus terminal
Last year Shell announced it would sell off three of its North Sea fields as its kicked off a £9billion asset sale.
The company said it would be focusing on a number of projects including investments in Schiehallion and Clair, as well as its Beryl and Curlew FPSO’s.
The Curlew FPSO produces oil and gas in the Central North Sea.
It exports gas via the Fulmar Gas Line to St Fergus and exports oil from an offtake tanker.
There are normally 91 personnel onboard the vessel.
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