Record #00490Economy archive
Saudi Arabia's Ghawar is identified as the world's largest conventional onshore oil field. Saudi Aramco's 2019 prospectus reported 58.319 billion barrels of combined oil-and-gas equivalent reserves at 31 December 2018, including 48.254 billion barrels of liquids.
Current Record
58.319 billionbarrels of oil equivalent
Current record value
Ghawar lies in Saudi Arabia's Eastern Province and follows an anticline extending for more than 200 km through several producing areas. Discovered in 1948 and brought into production in 1951, it has long been central to Saudi crude output.
The 2018 estimate of 58.319 billion boe represents combined proved reserves under the company's stated concession term. It is not that many barrels of crude oil alone, original oil in place, or an updated 2026 field-specific reserve estimate. Subsequent EIA material continues to describe Ghawar as the world's largest onshore oil field.
The record conclusion has sufficient verification support.
Basis: direct confirmation by an authority
Saudi Aramco's 2019 prospectus reports 58.319 billion boe in combined proved reserves and 48.254 billion barrels of liquids as at end-2018, describing Ghawar as the largest field by conventional proved reserves; EIA independently calls it the largest onshore oil field. The historical reserve snapshot is not claimed as a current-2026 figure.
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