织金县四季春煤矿煤层气藏特征及开发潜力评价

Characteristics and Development Potential Evaluation of Coalbed Methane Reservoir in Sijichun Coal Mine of Zhijin County

煤层气是一种优质洁净的多用途环保能源,煤层气资源开发已成为我国能源开发的重要工作,在能源结构中占有重要地位。四季春煤矿位于贵州省织金县西部,含丰富的煤炭资源。为查清矿区内煤层气赋存规律和开发潜力,从构造特征、地层特征、孔隙率、渗透率、煤的吸附性、煤储层压力、原地应力等方面分析了研究区煤层气藏特征,认为区内6、16号煤层储气量大,尤其是矿区的中东部地段煤层气含气量丰富,最高可达25.68 m^(3)/t,具备煤层气开发有利条件。

Coalbed methane is a high-quality and clean multi-purpose environmental protection energy.The development of coalbed methane resources has become an important work of China's energy development and plays an important role in the energy structure.Sijichun Coal Mine,located in the west of Zhijin County,Guizhou Province,is rich in coal resources.In order to find out the occurrence law and development potential of coalbed methane in the mining area,the characteristics of coalbed methane reservoir in the study area are analyzed from the aspects of structural characteristics,stratigraphic characteristics,porosity,permeability,coal adsorption,coal reservoir pressure and in-situ stress.It is considered that the gas storage capacity of coal seams 6 and 16 in the area is large,especially in the middle east of the mining area,the gas content of coalbed methane is rich,up to 25.68 m^(3)/t,it has favorable conditions for CBM development.