The major oilfield known as Ghawar is located in Saudi Arabia. It is the largest oil field in the world, extending approximately 280 kilometers in length and 30 kilometers in width. Discovered in 1948, Ghawar plays a crucial role in the global oil supply, significantly contributing to Saudi Arabia's economy. The field is primarily composed of a rich reservoir of crude oil, and its management and production methods continue to evolve, impacting worldwide energy markets.