Oil reserves, billion barrels, 2021 - Country rankings:
The average for 2021 based on 187 countries was 9.09 billion barrels.The highest value was in Venezuela: 303.81 billion barrels and the lowest value was in Afghanistan: 0 billion barrels. The indicator is available from 1980 to 2021. Below is a chart for all countries where data are available.
Measure: billion barrels; Source: The U.S. Energy Information Administration
* indicates monthly or quarterly data series
Definition: Proved reserves of crude oil are the estimated quantities of all liquids defined as crude oil, which geological and engineering data demonstrate with reasonable certainty to be recoverable in future years from reservoirs under existing economic and operating conditions.