Saudi Aramco, officially the Saudi Arabian Oil Group or simply Aramco, is a majority state-owned petroleum and natural gas company that is the national oil company of Saudi Arabia. As of 2024, it is the fourth-largest company in the world by revenue and is headquartered in Dhahran. Saudi Aramco has both the world's second-largest proven crude oil reserves, at more than 270 billion barrels, and largest daily oil production of all oil-producing companies. It is the single greatest contributor to global carbon emissions of any company in the world since 1965. Saudi Aramco operates the world's largest single hydrocarbon network, the Master Gas System. In 2013, its crude oil production total was 3.4 billion barrels, and it manages over one hundred oil and gas fields in Saudi Arabia, including 288.4 trillion standard cubic feet of natural gas reserves. Along the Eastern Province, Saudi Aramco most notably operates the Ghawar Field and the Safaniya Field. On 11 December 2019, the company's shares commenced trading on the Tadawul stock exchange. Wikipedia