::Note: The Valero refinery in Port Arthur is ranked as one of the ten largest refineries in the United States and processes the heavy crude from [[Venezuela]]. See: [[Crude oil#Types]] for how there are hundreds of different types of Crude oil depending on [[sulfur]] content, and how refinery [[infrastructure]] is built to service a particular grade of [[crude oil]] originating from a specific [[geographical]] location. | ::Note: The Valero refinery in Port Arthur is ranked as one of the ten largest refineries in the United States and processes the heavy crude from [[Venezuela]]. See: [[Crude oil#Types]] for how there are hundreds of different types of Crude oil depending on [[sulfur]] content, and how refinery [[infrastructure]] is built to service a particular grade of [[crude oil]] originating from a specific [[geographical]] location. |