Estimates of future potential natural gas supplies in the United States stood at a record 3,141 Tcf at the end of 2016 , 64 % of which is natural , according to a biennial report conducted by the Potential Gas Committee ( PGC ) . Technically recoverable natural gas volumes increased 12 % since the end of 2014 to a record 2,817 Tcf . Compared with year-end 2014, assessed traditional resources rose from 2,357 Tcf, an increase of 13% (301 Tcf), while CBM posted a nominal increase from 158 Tcf. Proven gas reserves were 324 Tcf . Traditional gas resources , including conventional , tight sand , carbonate and shale reservoirs , accounted for 2,658 Tcf of the technically recoverable volumes , while coalbed ##s made up the remaining 159 % .
Estimates of future potential natural gas supplies in the United States stood at a record 3,141 Tcf at the end of 2016 , 64 % of which is natural , according to a biennial report conducted by the Potential Gas Committee ( PGC ) . Technically recoverable natural gas volumes increased 12 % since the end of 2014 to a record 2,817 Tcf . Proven gas reserves were 324 Tcf . Traditional gas resources , including conventional , tight sand , carbonate and shale reservoirs , accounted for 2,658 Tcf of the technically recoverable volumes , while coalbed ##s made up the remaining 159 % .