Venezuela
There are several countries that have very large oil reserves. They are Venezuela which accounts for 20 percent of global reserves, Saudi Arabia and Iran.
Saudi ArabiaProven oil reserves (billion barrels):267.91Total oil supply in 2012 (thousand barrels per day): 11,545.7Saudi Arabia has almost one-fifth of the world's proven oil reserves and ranks as the largest producer and exporter of oil in the world.
Venezuela has the largest oil reserves in Latin America.
That's correct, Russia is the largest country to produce petroleum.
Madagascar has the second largest petroleum factories in Africa
I have included to related links. The 3 largest producers of petroleum are Saudi Arabia, Russia and the US. However, the US consumes its production. The countries with the largest reserves of oil are Saudi Arabia, Canada and Iran.
Saudi Arabia is Asia's leader in petroleum production and petroleum reserves
Venezuela
There are several countries that have very large oil reserves. They are Venezuela which accounts for 20 percent of global reserves, Saudi Arabia and Iran.
See the related link.
Persian Gulf
All the countries around the Persian Gulf have some of the world's largest oil reserves. The countries in this area with their worldwide ranking of oil production are Saudi Arabia (2nd), Iran (4th), Iraq (7th), United Arab Emirates (9th), Kuwait (11th), and Qatar (21st).
Lybia followed by Nigeria, followed by Algeria and then Angola See link bellow:
The main reserves in Europe are in Slovakia and Austria. Together, the two countries' reserves add up to around 1/50 of the world's reserves. The three countries with the largest reserves are Russia, China and North Korea.
Russia has the largest at over 20 million in their reserves, North Korea is the next with about 8 million and following that is Taiwan with about 5 million.
The U.S.A. and China