Shale gas changes N. American gas production projections

Estimates of ultimate gas recovery from shales have changed the outlook for gas production in the US and Canada.This article revises our 2007 gas production projections1 by incorporating various estimates of ultimate gas recovery from References 2-8.The revised projections used a modeling approach as discussed in Mohr9 to generate low, best-guess, and high cases for conventional, tight, shale, and coalbed methane resources for both Canada and the US.Conventional gasFor Canada, the analysis increased the low-case ultimate recovery to 300 tcf from 250 tcf10 as a consequence of applying the Hubbert linearization technique to production for years 1995-2006.The best-guess case assumed the same...

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