Brent crude, down 36 per cent this year, has clawed back some of its losses and ended trading on Friday at more than $40 a barrel
All the member nations signed off on a new deal for a production cut of 9.6 million barrels a day next month
While crude has now doubled from its low in mid-April, the path back to pre-virus levels of oil demand still looks uncertain
Production cuts are meant to be eased to about 7.7 million barrels a day in July
Producers have lowered global oil supply by around 14-15 million barrels a day
US crude stockpiles rose for a 15th week, although at a slower pace, while supplies at the Cushing storage hub expanded
The accord caps a tumultuous month when Brent crude plunged to its lowest in nearly two decades, falling toward $20 a barrel
The flights operated to Afghanistan, Croatia, Egypt, Iran, Russia, Sudan, Somaliland and Thailand
Benchmark Brent crude has plunged 48 per cent this year