Endeavour International Corporation has announced that its Rochelle field in the UK North Sea remains offline.
The Rochelle field has been offline since September 9, due to mechanical problems on the Nexen-operated Scott platform, which produces crude oil and natural gas from the Scott, Telford and Rochelle fields.
Although the repairs of the Scott export compressors were successfully completed, the gas cooler failed a leak test during commissioning, Endeavour said in the statement.
Endeavour has been informed by Nexen that the repair of the leak and restart of Rochelle production is not expected before October 10, 2014.
Endeavour has a 44% working interest in the Rochelle field.
The Scott platform, which came on stream in 1993 is located about 188 km (116 miles) northeast of Aberdeen in 142 metres (465 feet) of water. Oil from the platform is exported via the Forties pipeline to the Kinneil Terminal in Scotland. Natural gas is exported via the Sage pipeline system.