World Petroleum Assessment 2000 estimates of the quantities of conventional oil, gas, and natural gas liquids outside the United States that have the potential to be added to reserves in the next 30 years (1995 to 2025).
A rigorous geologic foundation for estimating world undiscovered energy resources. Links to world energy resources text and maps (PDF format), total petroleum system (TPS), and world geologic maps.
U.S. Department of the Interior |
U.S. Geological Survey