Although growth in North American coalbed methane(CBM)activity slowed during the last 12 months,it has still been a strong period for this subset of the E&P industry.Estimates of global in-situ CBM reserves now range between 3,500 and 7,500 Tcf,and the North American figure is between 1,000 and 3,000 Tcf.Within the North American number,the US figure most often cited is 700 Tcf.
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