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U.S. Crude Oil, Natural Gas, and Natural Gas Liquids Reserves

Published by U.S. Energy Information Administration | Department of Energy | Catalog Last Checked: August 03, 2026 at 02:32 AM | Dataset Last Updated: November 29, 2018
Annual data on proved reserves of crude oil, natural gas, and natural gas liquids in the U.S. Based on EIA Form-23L data. Proved reserves are estimated volumes of hydrocarbon resources that analysis of geologic and engineering data demonstrates with reasonable certainty are recoverable under existing economic and operating conditions. Reserves estimates change from year to year as new discoveries are made, existing fields are more thoroughly appraised, existing reserves are produced, and prices and technologies change.

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  • 2018 Reserves

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