Analysis of application status and adapting conditions for different methods of CBM development

Based on the analysis of current status of CBM exploration and development in the world,the effect and adapting conditions,technical characteristics,advantage and existing problems were analyzed for different methods of CBM development.In term of technical and technological requirements of different methods of CBM develop-ment,the adaptability of the major CBM development approaches were studied in view of geology,reservoir,to-pography and investment.On the basis of comprehensive comparison and analysis of CBM geological conditions in China and U.S.A,corresponding CBM development way was proposed.CBM development by surface vertical wells and directional wells is suitable in Qingshui basin and eastern Ordos basin,and exploration and development of CBM by vertical wells is suggested for other areas due to complicated geological conditions.