The crude oil processing capability and size of the processing unit in the refinery is considered to rank the largest oil refineries in the world. The oil producing or highly oil exporting international locations principally sends raw oil to the highly oil importing countries including United States, India, South Korea, China and different populated international locations. In that thoughts, they construct large oil refineries on the demand of oil and petroleum products. The Crude Oil is together with petroleum products similar to Gasoline, Petroleum, Diesel and different fuel for automobiles and machines. Jamnagar Refinery in India is the World largest oil refinery with 1.2 million barrels per day of output Capability.