Libya enjoyed one of its best oil production months for years in September with average output of 920,000 b/d just short of July’s 1.02mn b/d four-year high.

The September resurgence was largely due to the resumption of production from the Repsol-operated Sharara fields in the southwest which had been shut in for most of the second half of August due to a pipeline blockade.

But output from the fields remains vulnerable to disruptions. Tripoli-based National Oil Corporation once more...