赵庄井田煤层气成藏条件研究

煤层气成藏条件研究是有效划分成藏类型或含气系统，煤层气富集高渗有利区预测、评价及优选的关键基础工作。基于赵庄井田煤层气地质条件及相关测试资料，借鉴前人研究成果，从煤生烃、煤层气储集和煤层气封盖保存条件等方面对赵庄井田煤层气成藏条件进行了研究。研究结果表明:煤中丰富的生烃物质在良好的生烃动力作用下，提高了生烃率和生烃量，为煤层气成藏提供了基础条件；煤变质程度高，促使煤中微小孔隙发育，煤层气储集能力增强和储集空间增大，有利于煤层气大量储存和富集；煤层埋深、围岩特性、构造及地下水径流等地质条件的有机匹配，为煤层气成藏提供了良好的封盖保存条件，是煤层气成藏的关键因素。

Study on CBM reservoiring condition in Zhaozhuang Mine Field

The research on coalbed methane accumulation conditions is the key basic work for the prediction，evaluation and optimization of the favorable area of coalbed methane enrichment and high permeability.Based on the geological conditions and relevant test data of coalbed methane in Zhaozhuang Mine Field，the author studied the coalbed methane accumulation conditions of No.3 in Zhaozhuang Mine Field from the aspects of coal hydrocarbon generation，coalbed methane storage and coalbed methane sealing and preservation conditions.The research results showed that the rich hydrocarbon-generating substances in coal improve the hydrocarbon generation rate and the amount of hydrocarbon generation under the action of good hydrocarbon generation power，and provide the basic conditions for coalbed methane accumulation.The high degree of metamorphism of coal promotes the development of micro pores in coal，the enhancement of CBM storage capacity and the enlargement of CBM storage space，which is beneficial to the storage and enrichment of CBM in large quantities.The organic matching of the geological conditions，such as the depth of coal seam，the characteristics of surrounding rock，the structure and groundwater runoff，provides a good sealing and preservation condition for coalbed methane accumulation，which is the key factor for coalbed methane accumulation.