The volatility of output from Libya’s largest oil concession, the Repsol-operated Sharara fields, highlights the challenges of keeping the country’s oil production on an upwards trajectory.

When it comes to Libya’s oil production targets, the sounds from the state-owned, Tripoli-based National Oil Corporation (NOC) are consistently optimistic. In January, the company’s chairman, Mustafa Sanallah, announced that output of 1.25mn b/d by the end of the year was...