This is a polygon overlay showing the boundaries for the super-giant Ghawar Oilfield in Saudi Arabia. It has been responsible for over half of Saudi Arabia's crude oil production.

Historically Ghawar has been subdivided into five production areas, from north to south, 'Ain Dar and Shedgum, 'Uthmaniyah, Hawiyah and Haradh. The major oasis of Al-Ahsa and the city of Al-Hofuf are located on Ghawar's east flank, corresponding to the 'Uthmaniyah production area. Ghawar was discovered in 1948 and put on stream in 1951.

Approximately 60-65% of all Saudi oil produced between 1948 and 2000 came from Ghawar. Cumulative production to the end of 2005 was about 60 billion barrels (based on Croft). Currently, Ghawar is estimated to produce over 5 million barrels (800,000 m�) of oil a day (6.25% of global production).

Ghawar also produces approximately 2 billion cubic feet (56 633 693 m�) of natural gas per day.

(From Wikipedia):