RANKING OF THE WORLD'S OIL AND GAS PROVINCES BY KNOWN PETROLEUM VOLUMES
Open-File Report 97-463
Figure 4. Histogram showing known petroleum volumes of the world by region.
The number of provinces in each region that contain known oil and gas are
shown. The United States known petroleum volume is included in Region 5.
[BBOE is billion barrels of oil equivalent. For this calculation, 6,000
cubic feet of gas equals 1 barrel of oil equivalent.]