Table 5-5 World Petroleum Resources
Table 5-5
World Petroleum Resources
| Resource | Cumulative quantity (Trillion barrels) |
Years remaining | |
|---|---|---|---|
| Current consumption |
Consumption growing 2% annually |
||
| Proven reserves | 1 | 42 | 30 |
| USGS identified reserves | 1.1 | 46 | 33 |
| Ultimate resources | 1.7 | 71 | 44 |
| Enhanced recovery 34% to 50% | 2.8 | 117 | 60 |
| Unconventional oil resources | 3.4 | 142 | 67 |
| Oil shale and tar sands | 17.4 | 725 | 137 |
Current consumption rate of 0.024 trillion barrels per year.
Source: C.D. Masters, E.D. Attanasi, and D.H. Root. World Petroleum
Assessment and Analysis, Proceedings of the 14th World Petroleum
Congress (New York, NY: John Wiley and Sons, 1994).