Sources in the Libyan oil sector, the production in the field of spark, the largest oil fields in Libya, has stopped since yesterday.
A Libyan oil source told Reuters that the group that shut down the pipeline on Saturday had previously closed it, and it was not clear why it closed the field and not yet demanded it.
The field has produced up to 280,000 barrels per day in recent weeks, but production has been temporarily halted several times in the field because of protests by armed groups and oil workers since it reopened in December, two years after the closure of the pipeline.
There was no comment from the Tripoli National Corporation, which runs the field in a joint venture with Repsol, Total, OMV and Statoil, on the incident.
The production of the spark is important for the recovery of Libyan oil production, which rose to more than one million barrels per day in late June, equivalent to about four times that of last summer.