Libya’s Sharara oil field stopped pumping crude oil several days after output plunged at another of the OPEC member’s biggest deposits.
The halt resulted from the closing of a pipeline from Sharara to the Zawiya refinery according to a source.
The North African country’s largest field halted production on Sunday.
Libya had been pumping 1.1 million barrels a day as of March 1, with Sharara contributing 300,000 of that.
The field is run by a joint venture between the National Oil Corp. and Repsol SA, Total SA, OMV AG and Statoil ASA.
Libya, a member of the Organization of Petroleum Exporting Countries, has struggled to boost oil production amid the lingering effects of civil strife that erupted earlier in the decade.
Output has risen from 370,000 barrels a day two years ago, though it remains well below the 1.8 million barrels a day Libya pumped before.
Major oil fields including Sharara and El-Feel have experienced sporadic disruptions before, occasionally setting back the revival.