Saudi Aramco's Abqaiq Plants facility is the company's biggest oil processing and crude stabilisation facility. With a capacity of 7 million barrels per day, the facility is the primary oil processing site for Arabian extra light and Arabian light crude oils. The Abqaiq Plants facility handles crude pumped from the Ghawar field. Usually, the crude oil processing capacity and size of the processing unit in the refinery are considered here to rank. The oil-producing countries send raw crude oil to the oil importing countries including the United States, India, South Korea and China. As per the demand, companies build large oil refineries in particular places. Oil and gas wells produce a mixture of hydrocarbon gas, condensate or oil; water with dissolved minerals, usually including a large amount of salt; other gases, including nitrogen, carbon dioxide (CO 2 ), and possibly hydrogen sulfide (H 2S); and solids, including sand from the reservoir, dirt, scale, and corrosion products from the tubing.