The al-Sharara oil field remained closed on Monday, more than a week after it was force to stop production due to clashes between rival militant groups.
According to Middle East Eye, the field usually produces upwards of 300,000 bpd, and when working is the country's largest operational producer of oil.
It was originally shut down almost two weeks ago after guards protecting it were expelled by local tribesmen affiliated to Libya Dawn, and workers at the facility itself.
The field is operated by Spanish oil major Repsol.
(Sources: Middle East Eye, Reuters)