Oil reserves - country data from around the world:
The average for 2016 was 16.71 billion barrels.
The highest value was in Venezuela: 300 billion barrels and the lowest value was in Morocco: 0 billion barrels.
Below is a chart for all countries where data are available for: Oil reserves.
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.