Occurrence features of coalbed methane of Binchang mining area in Ordos basin

Binchang mining area in Ordos basin is an important resource base to be planed and constructed during China’s “National Tenth Five-year Plane” and “National Eleventh Five-year Plane”.Using some mine geological data and CBM emission data, through analyzing the occurrence features which are the source of CBM, and the sealing of top-lower rocks, and the effect of geological structure, it was confirmed that the center part and syncline center of Binchang mining area are the favorable zones for coalbed methane occurrence, the CBM occurs mainly in seam No.4and the surrounding rocks, the zones that are well sealed can have CBM content of 5.71m³/t.Through analysis of geological exploration data of Jiangjiahe, in Binchang mining area the CBM geological reserves and extractable CBM reserves are respectively about 542×10⁸ m³ and 162.6×10⁸ m³, therefore the Binchang mining area has good prospective for CBM exploration and development.