The Ghawar Field in Saudi Arabia is widely recognized as the largest conventional oil field in the entire world, spanning thousands of square kilometers in the kingdom's Eastern Province. Discovered in 1948 and operated exclusively by Saudi Aramco, it has historically accounted for a massive share of the nation's cumulative petroleum extraction. Featuring exceptional reservoir porosity and immense recoverable reserves, Ghawar remains the single largest supplier of primary energy in global petroleum history.