1,687,300,000,000 is the massive number that is the total number of barrels of oil that are in the ground. This number is known as the proven reserves of oil.
The 12 nations that make up OPEC have the lion’s shares of this.
Algeria 12,200,000,000
Angola 12,700,000,000
Ecuador 8,400,000,000
Iran 157,000,000,000
Iraq 150,000,000,000
Kuwait 101,500,000,000
Libya 48,500,000,000
Nigeria 37,100,000,000
Qatar 25,200,000,000
Saudi Arabia 265,900,000,000
UAE 97,800,000,000
Venezuela 297,600,000,000
Total: 1,213,900,000,000
So OPEC’s 1,213,900,000,000 out of the total of 1,687,300,000,000:
1,213,900,000,000 / 1,687,300,000,000 = 71%.
Thus OPEC “own” 71% of the world’s oil reserves. That is the real big oil.