What is the name of the world’s largest conventional oil field?

Ghawar Field is widely recognized as the world’s largest conventional oil field.

The field lies in Saudi Arabia’s Eastern Province and extends for roughly 280 kilometres from north to south. Saudi Aramco discovered it in 1948, and production began in 1951. Its enormous carbonate reservoir has made it central to Saudi Arabia’s petroleum industry.

Ghawar is a conventional field because its oil is held in a relatively permeable reservoir and can be produced through wells using established methods. It is not an oil-sands deposit or a shale-oil play, categories that require different extraction techniques.

Exact remaining reserves and production figures are not always publicly disclosed. That is why descriptions often emphasize its historical scale rather than claiming a single universally agreed current reserve number.