Ghawar (Arabic:الغوار)'s an oil field in Saudi Arabia. It's located about WSW from the city of Dhahran in Al-Ahsa county of the Eastern Province. Measuring, it's by far the largest conventional oil field in the world. The field's entirely owned and operated by Saudi Aramco, the nationalized Saudi oil company. Relatively little's known about Ghawar because the company and Saudi government closely guard field performance information and per-field production det… (More on Ghawar)