America

Australia and China all have many coal bearing basins with greatly different geological conditions of coalbed methane.Among these basins

most are poor in geological conditions of coalbed methane

excerpt for a few which have rich coalbed methane resources

excellent reservoir characteristics

structural and hydrological conditions

thus are successful in exploration and development.Even in well developed basins，such as San Juan Basin and Qinshui Basin

the geology conditions are also greatly different in different regions.According to CBM geological conditions

accumulation models and development conditions

these basins can be divided into mid-high-rank coal basins and low-rank coal basins.A CBM classification and correlation method system was established to perform comparative analysis among the mid-rank coal in San Juan Basin and low-rank coal in Powder River Basin of America

complex rank coal in Bowen/Surat Basin of Australia

high rank coal in Qinshui Basin and complex rank coal in Ordos Basin of China

as well as the main zones(areas)in these basins.It was found that the most prospective Ordos Basin and Qinshui Basin in China are greatly different with San Juan Basin

Bowen/Surat Basin.Fanzhuang

Hancheng

south Yanchuan

Zhijin and other blocks are only similar to the Zone-3 in San Juan Basin’s.It is therefore concluded that the coalbed methane geological conditions and recoverability are relatively poor in the coal basins in China

and effective exploration and development targets are different to find in the near and medium terms.So from a strategic perspective

the long-term development goals should not be set too high.And from a tactical perspective

attentions should be paid to analyzing difference

forecasting resources sweet spot

picking the favorable target

arranging targeted deployment on exploration and development

and controlling development speed.