Only now is coal bed methane open market economic. (johnquiggin.com)
The hypothesis of the Caulton paper, that the new shale gas wells are enabling the escape of coal bed methane, is certainly plausible but they only clearly document one example. (dotearth.blogs.nytimes.com)
So clearly, there is in fact some amount of extracted coal bed methane that would otherwise be nowhere near release, and therefore not eligible for GHG reduction credits. (realclimate.org)