In a further embodiment of the invention, at least one common well is used for both the recovery of methane from the coal bed formation and the introduction of {HEAD ~ hydrogen} into {TAIL ~ the coal bed formation} 
into
In a further embodiment of the invention , at least one common well is used for both the recovery of methane from the coal bed formation and the introduction of { HEAD ~ hydrogen } into { TAIL ~ the coal bed formation }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL