Saudi Aramco is the state-owned national oil company of Saudi Arabia. It is the largest oil corporation in the world with the largest proven crude oil reserves and production.[2] Headquartered in Dhahran, Saudi Arabia,[3] Saudi Aramco also operates the worlds largest single hydrocarbon network, the Master Gas System. It was known as just Aramco between the years of 1933-1988, an acronym for Arabian American Oil Company.