SUMMARY OF RESULTS

This report summarizes the results of a 3-year study of the oil and gas resources of onshore areas and State waters of the United States by the U.S. Geological Survey (USGS). A parallel study of the Federal offshore is being conducted by the Minerals Management Service (MMS). Assuming existing technology, there are approximately 110 billion barrels of technically recoverable oil onshore and in State waters. This includes measured (proved) reserves, future additions to reserves in existing fields, and undiscovered resources. The technically recoverable conventional resources of natural gas in measured reserves, future additions to reserves in existing fields, and undiscovered accumulations equal approximately 715 trillion cubic feet of gas. In addition to conventional gas resources, the USGS has made an assessment of technically recoverable resources in continuous-type (largely unconventional) accumulations. We estimate about 300 TCFG (trillion cubic feet of gas) of technically recoverable natural gas in continuous-type deposits in sandstones, shales, and chalks, and almost 50 TCFG of technically recoverable gas in coal beds. The total technically recoverable oil and gas resource base onshore and in State waters of the United States is listed in table 1 and shown on figures 1 and 2.

U.S. Geological Survey Circular 1118