In 2020, Saudi Arabia had approximately 38.9 billion metric tons of conventional crude oil reserves, and thus had the largest reserves of conventional oil worldwide. Iran had the second largest conventional oil reserves, with around 21.7 billion metric tons.
Leading countries based on conventional oil reserves in 2020 (in million metric tons)
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BGR. (February 10, 2022). Leading countries based on conventional oil reserves in 2020 (in million metric tons) [Graph]. In Statista. Retrieved May 27, 2022, from https://www.statista.com/statistics/264762/countries-with-the-largest-conventional-oil-reserves/
BGR. "Leading countries based on conventional oil reserves in 2020 (in million metric tons)." Chart. February 10, 2022. Statista. Accessed May 27, 2022. https://www.statista.com/statistics/264762/countries-with-the-largest-conventional-oil-reserves/
BGR. (2022). Leading countries based on conventional oil reserves in 2020 (in million metric tons). Statista. Statista Inc.. Accessed: May 27, 2022. https://www.statista.com/statistics/264762/countries-with-the-largest-conventional-oil-reserves/
BGR. "Leading Countries Based on Conventional Oil Reserves in 2020 (in Million Metric Tons)." Statista, Statista Inc., 10 Feb 2022, https://www.statista.com/statistics/264762/countries-with-the-largest-conventional-oil-reserves/
BGR, Leading countries based on conventional oil reserves in 2020 (in million metric tons) Statista, https://www.statista.com/statistics/264762/countries-with-the-largest-conventional-oil-reserves/ (last visited May 27, 2022)