COAL-FORMING SETTINGS AND COALBED METHANE OF LONGTAN COAL-BEARING STRATA IN HUNAN-JIANGXI PROVINCES,CHINA

The longtan coal-bearing strata in Hunan and Jiangxi provinces are the important coal deposits in South Chian,with abundant coalbed methane resources,are the ideal sites tor development and utilization of coalbed methane in shallow part.The coal-bearing paleogeographic conditions and geotectonic environments of Longtan coal-bearing strata in Hunan and Jiangxi provinces are analyxed.On these bases,the original gas-generating capacities,the gas storage capacities of reservoir and surrounding rocks of Longtan coal-bearing strata are discussed,as wdll as the influences of Indosinian and Yanshan movements on the abundance and distribution of coalbed methane.