region cumulative reserves undiscovered total oil

production resources endowment**

North America 202 106 121 429

South America 74 93 44 211

Western Europe 23 19 28 70

Eastern Europe (including Russia) 113 104 64 281

Central Asia and Transcaucasia 16 24 39 79

Middle East 194 666 122 982

Africa (including North Africa) 57 62 48 167

Oceania and Asia 45 45 81 171

Total world 724 1,119 547 2,390

*In billion barrels; figures adapted from Oil & Gas Journal and U.S. Geological Survey.

**Percent of original reserves by average API gravity: 10 degrees-20 degrees: 5 percent; 20 degrees-25 degrees:

6 percent; 25 degrees-35 degrees: 57 percent; above 35 degrees: 32 percent.