Proved reserves of natural gas are estimated quantities that analyses of geological and engineering data have demonstrated to be economically recoverable in future years from known reservoirs. The natural gas placed by man in underground storage is not included in proved reserves. It is not necessary that production, gathering, or transportation facilities actually be installed or operative for a reservoir to be considered proved. It is assumed that production will be initiated, if and when economically justified.
Please go to the U.S. Department of Energy and the Energy Information Administration natural gas websites for complete and detailed information.
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