綦江打通区块綦煤1井煤储层物性垂向分布特征  

Vertical distribution features of physical properties of coal reservoir in shaft QM-1 of Datong block of Qijiang area

作　　者：郭东鑫[1,2] 汪威 程礼军 唐书恒[3] 张华莲 张跃磊[1,2] GUO Dongxin;WANG Wei;CHENG Lijun;TANG Shuheng;ZHANG Hualian;ZHANG Yuelei(Key Laboratory of Shale Gas Exploration,Ministry of Land and Resources,Chongqing Institute of Geology and Mineral Resources,Chongqing 400042,China;National and Local Joint Engineering Research Center of Shale Gas Exploration and Development,Chongqing 400042,China;School of Energy Resources,China University of Geosciences(Beijing),Beijing 100083,China)

机构地区：[1]重庆地质矿产研究院国土资源部页岩气资源与勘查技术重点实验室,重庆400042 [2]重庆地质矿产研究院页岩气勘探开发国家地方联合工程研究中心,重庆400042 [3]中国地质大学(北京)能源学院,北京100083

出　　处：《煤田地质与勘探》2018年第5期102-106,共5页Coal Geology & Exploration

基　　金：重庆市国土资源和房屋管理局科技计划项目(KJ-2018026);重庆市重点产业共性关键技术创新专项(cstc2016zdcy-zd90002)~~

摘　　要：重庆綦江打通区块煤层气勘探程度较低,为探究其煤层气勘探开发潜力,采用压汞法、等温吸附实验、煤层气含量测试等手段,系统分析了綦煤1井揭露的主力煤层在垂向上孔隙结构、含气性等特征,综合评价了该区煤层气开发地质条件。结果表明:该井薄–中厚煤层发育,煤体结构以原生结构、碎裂结构为主,其中M_8煤层中部为碎粒结构煤;煤储层具有"低孔、特低渗"特征;下部M_8、M_(12)煤层以吸附孔为主,具有较强的吸附储气能力;主力煤层含气量较高,其中M_8煤层中部达到过饱和吸附状态,各煤层整体含气性好,研究区煤层气资源潜力较大,开发前景好。同时,垂向上各主力煤层的物性差异性和复杂性将对研究区煤层气开发工艺提出挑战。In order to investigate the potential of coalbed methane development in Datong block with lower degree of coalbed methane exploration,the vertical characteristics of the main coal seams in shaft QM-1 were systematically analyzed with respect to their porestructure and gas content on the basis of mercury intrusion method,isothermal adsorption and gas content tests.The results showed that coal in shaft QM-1 is dominated by thin and medium-thick seams with primary and cataclastic texture.The middle part of the seam M8 refers to the fragmented coal with low-porosity and extra-low-permeability.Pores of the lower part of the seams M8 and M12 are mainly adsorption pore which shows high adsorption capability.Main coal seams in shaft QM-1 have high gas content and in particular seam M8 has saturated adsorption state.The study area generally has a good resource potential and development prospect of coalbed methane.However,it is would be challenging for coalbed methane development because of the diversity and complexity of the main coal seams vertically.

关 键 词：打通区块 煤储层物性 垂向分布 

分 类 号：P618[天文地球—矿床学]