A field engineer said Libya’s Sharara field resumed production on Monday after it closed on Friday due to valve closure.

Libya's National Oil Corp says valve was reopened on Sunday evening enabling oil to be pumped again to refinery at port of Zawiya.

The valve was reopened on Sunday evening enabling oil to be pumped again to a refinery at the port of Zawiya, 49 km (30.4 miles) west of Tripoli, Libya's National Oil Corp (NOC) said in a statement.

NOC declared on Saturday force majeure on Sharara crude shipments at the same port.

“We are working on lifting force majeure,” a Libyan oil source told Reuters while also confirming output resumption at the field.

The shutdown caused a loss of about 290,000 barrels per day (bpd) of production worth an estimated $19 million, NOC said.

Libya’s overall oil production before the Sharara outage stood at 1.2-1.3 million bpd, NOC chief Mustafa Sanalla said earlier this month.

NOC operates Sharara in partnership with Spain’s Repsol, France’s Total, Austria’s OMV and Norway’s Equinor.