Infographic map of the world's largest oil discoveries since 1868. Grey dots are oil deposits discovered before 1988. Red dots are discoveries between 1988-2010. Triangles represent the 20 largest discoveries. The largest oil field in the world is the Ghawar Field in Saudi Arabia with an estimated 88-104 billion barrels of recoverable oil (figure includes both past and future extractions). In fact most of the largest oil fields are located in the Middle East (Saudi Arabia, Kuwait, Iran Iraq). Data based on a paper by James Cust and David Mihalyi 2017.