Commodities Saudi drone attack: How major disruptions affected oil prices in the past Updated : September 17, 2019 10:26 AM IST Saudi Aramco lost about 5.7 million barrels per day of output after 10 unmanned drones struck the world’s biggest crude-processing facility in Abqaiq. The recent attack Saudi Arabian oil facility removed about 5 percent of global supplies has given shook the markets across the world. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.