华南地质2025，Vol.41Issue(4)：707-714,8.DOI:10.3969/j.issn.2097-0013.2025.04.002
江汉盆地北缘寒武系水井沱组页岩气储层矿物组分特征及其勘探意义
Characteristics of Mineral Composition of Cambrian Shuijingtuo Formation Shale Gas Reservoirs in the Northern Margin of Jianghan Basin and Their Exploration Significance
摘要
Abstract
The study of mineral composition in shale gas reservoirs is of significant importance for the evaluation and development of shale gas.X-ray diffraction technology was employed to conduct experimental testing and analysis of mud shale samples from the Cambrian Shuijingtuo Formation at the northern edge of the Jianghan Basin.The results indicate that the quartz content is the highest,with an average content of 40.8%,followed by an average clay mineral content of 34%,and an average calcite content of 9.6%.The shale in the Shuijingtuo Formation is predominantly composed of mixed shale and siliceous shale.The redox environment during shale deposition shows a transition from anaerobic to oxidizing conditions from bottom to top.The study area is far from the carbonate platform,with relatively deep water.The mineral composition is mainly clay minerals and quartz,with low content carbonate mineral.The brittle mineral accounts for over 50%of the mud shale of the Shuijingtuo Formation,which is favorable for fracturing and stimulation.Compared to successfully developed shale gas regions both domestically and internationally,the study area exhibits certain similarities and possesses favorable geological conditions for shale gas accumulation.关键词
页岩气储层/矿物成分/X射线衍射/水井沱组/江汉盆地北缘Key words
shale gas reservoir/mineral composition/X-ray diffraction/Shuijingtuo Formation/northern margin of the Jianghan Basin分类
天文与地球科学引用本文复制引用
王强,李旭兵,周鹏,王传尚..江汉盆地北缘寒武系水井沱组页岩气储层矿物组分特征及其勘探意义[J].华南地质,2025,41(4):707-714,8.基金项目
中国地质调查局项目(DD201601709、DD20221659、DD20243464) （DD201601709、DD20221659、DD20243464）
