This is a guest post by Dennis Coyne.
The views expressed in the post are those of Dennis Coyne and do not necessarily reflect the views of Ron Patterson.
The post that follows relies heavily on the work of Paul Pukite (aka Webhubbletelescope), Jean Laherrere, and Steve Mohr. Any mistakes are my responsibility.
For World Natural Gas URR Steve Mohr estimates 3 cases, with case 2 being his best estimate.
Case 1 URR= 14,000 TCF (trillion cubic feet)
Case 2 URR= 18,000 TCF
Case 3 URR= 27,000 TCF
Jean Laherrere’s most recent World natural gas URR estimate is close to Steve Mohr’s Case 1 at 13,000 TCF.
A Hubbert Linearization(HL) of World Conventional Natural Gas from 1999 to 2014 suggests a URR of 11,000 TCF, an HL from 1982-1998 points to a URR of 6000 TCF for conventional natural gas.
Note that “Conventional” natural gas subtracts US shale gas and US coal bed methane (CBM) from gross output minus reinjected gas for the World.