Primary Geology Factors Controlling Coalbed Methane (CBM) enrichment in Jixi Basin
Jixi basin is one of the important coal basins in China.To explore the gas accumulation characteristics and its geological controls, its important for further exploration and development of coalbed methane (CBM).The gas content of Jixi Basin is high viable from 4.78 to 11.94 m3/t, indicating high gas content in the north and west but low gas content in the south and east.The further analysis results show that the delta plain and lake are favorable sedimentary environments for coal accumulation.The Chengzihe and Muleng formation are formed in these environments.Moreover, massive magmatic intrusion heat activities and subsequent continuous subside of strata increase coal rank of the coals.In the area of Pingrna reverse fault and the area with thick Muleng formation, mud seals are favorable for CBM preservation.In these areas, CBM is sealed and accumulated by hydrodynamic condition.Finally, a comprehensive evaluation model for CBM was found.Based on the evaluation model, the most favorable zone for CBM exploration is forecasted to be J1 idong depression.
coalbed methane geological control favorable zone Jixi Basin
Xiaoqian Guo Dameng Liu Yanbin Yao Yidong Cai Junqian Li
Coal Reservoir Laboratory of National Engineering Research Center of CBM Development &Utilization, School of Energy Resources, China University of Geosciences, Beijing 100083, PR CHINA
国际会议
杭州
英文
911-916
2013-01-18（万方平台首次上网日期，不代表论文的发表时间）