As of 2015, The Motiva oil refinery in Port Arthur, Texas, is one of the biggest refineries in the United States. Another Texas refinery, Exxon's Baytown facility is another of the biggest refineries in the country.
The largest oil refinery in the US is owned by a partnership between Shell and a Saudi company called Aramco. The third largest oil refinery in the country is located a few states away in Louisiana. The Marathon Petroleum Corporation set up the Garyville refinery, and since its creation in the 1970s, it has grown to be the third biggest in the country and 10th biggest in the world.