贵州织纳煤田三塘向斜X区块煤层气储层特征研究  

Study on coalbed methane reservoir strata characteristics ofX block in Santang syncline of Guizhou Zhina coalfield

作　　者：赵恒仪 邹江海 杨永宇 Zhao Hengyi;Zou Jianghai;Yang Yongyu(Key Laboratory of Unconventional Natural Gas Evaluation and Development in Complex Structural Area,Ministry of Natural Resources,Guiyang 550081,China;Guizhou Institute of Petroleum Exploration and Development Engineering,Guiyang 550081,China)

机构地区：[1]自然资源部复杂构造区非常规天然气评价与开发重点实验室,贵州贵阳550081 [2]贵州省油气勘查开发工程研究院,贵州贵阳550081

出　　处：《煤炭与化工》2024年第11期98-100,105,共4页Coal and Chemical Industry

摘　　要：为了查明贵州织纳煤田三塘向斜内煤层气储层特征,通过露头、录井、测井、试井等资料,开展了室内实验、测井曲线分析等内容综合分析。研究表明,三塘向斜内主要含煤地层为龙潭组,煤层层数多而薄,煤体结构以碎裂煤和原生结构煤为主,主要煤层含气量在8.98~18.05 m^(3)/t,孔隙度在1.47%~7.67%,渗透率在0.027 1~0.21 m D,节理缝连通性较好,微裂缝发育,部分被充填。研究取得的成果对三塘向斜后续煤层气规模化开发时压裂地质选层提供了参考依据,具有一定的指导意义。In order to find out the reservoir strata characteristics of coalbed methane in Santang syncline of Zhina coalfield in Guizhou,the comprehensive analysis of indoor experiment and logging curve analysis was carried out by outcrop,logging,well test and other data.The research showed that the main coal bearing strata in Santang syncline was Longtan Formation,the number of coal strata was many and thin,the coal body structure was mainly cataclastic coal and primary structural coal,the gas content of the main coal seam was 8.98~18.05 m^(3)/t,the porosity was 1.47%~7.67%,the permeability was 0.0271~0.21 mD,the joint fracture connectivity was good,and the micro-fracture was developed and partially filled.The result obtained in this study provided a reference for the selection of fracturing geological strata in the subsequent large-scale development of coalbed methane in Santang syncline,which had certain guiding significance.

关 键 词：织纳煤田 三塘向斜 龙潭组 储层特征 

分 类 号：P618[天文地球—矿床学]