5 Largest Oil Fields in the World

4. Gachsaran Field

Total Oil Reserves Based on Cumulative Past Production and Future Production Potential: 52.9 billion barrels

Country: Iran

Gachsaran Field is Iran’s second largest oil field with 52.9 billion barrels of total oil reserves when including cumulative past production. Although it has been in operation since 1930, Gachsaran Field nevertheless still produces around 560,000 barrels per day.