Drone attacks for a third day on oilfields in Iraq's semi-autonomous Kurdistan region have slashed crude output by 140,000 to 150,000 barrels per day, two energy officials said on Wednesday, as infrastructure damage forced multiple shutdowns.

On Wednesday, bomb-laden drones struck oilfields in Iraq's semi-autonomous Kurdistan region for the third day in a row.

Two drones attacked Khurmala oilfield in Iraq's semi-autonomous Kurdish region on Monday night, counter-terrorism officials said. There were no casualties and only material damage was recorded, said the Iraqi Security Media Cell,