石油物探2018，Vol.57Issue(3)：344-355,12.DOI:10.3969/j.issn.1000-1441.2018.03.003
蒙脱石与相关黏土矿物的演变规律及其对页岩气开发的影响
Evolution of montmorillonite and its related clay minerals and their effects on shale gas development
摘要
Abstract
The effects of montmorillonite and its related clay minerals on shale gas development were assessed in this study.First,the differences in content of the montmorillonite and its related clay minerals in various areas were analyzed,and certain variation patterns in changeable distribution features were found.Next,the sedimentary environment and differences in occurrence characteristics for montmorillonite and its related clay minerals under different buried depth conditions were analyzed to reveal the spatiotemporal evolution of montmorillonite and its related clay minerals.Montmorillonite transforms into illite in an alkaline environment rich in K+,converts into chlorite under alkaline conditions rich in Fe2+ and Mg2+,and forms kaolinite in acidic environments.With changes in strata burial depth,montmorillonite can be divided into a mixed illite-montmorillonite zone,a zone with abnormally high values of kaolinite,and an illite-chlorite development zone.Finally,given that the characteristics of montmorillonite(i,e.,easy hydration expansion) can result in difficult shale gas production,the evolution law of montmorillonite and its related clay minerals is useful to form a reference scheme for the formulation development of drilling and fracturing fluids in shale gas reservoir development,and for predicting the distribution of high quality shale gas reservoirs.关键词
蒙脱石/黏土矿物/分布特征/演变规律/页岩气开发Key words
montmorillonite/clay minerals/distribution characteristic/evolution law/shale gas development分类
天文与地球科学引用本文复制引用
靳平平,欧成华,马中高,李丹,任玉金,赵永富..蒙脱石与相关黏土矿物的演变规律及其对页岩气开发的影响[J].石油物探,2018,57(3):344-355,12.基金项目
国家重点基础研究发展计划(973计划)项目(2014CB239201)和国家科技重大专项课题(2017ZX05035003)联合资助.This research is financially supported by the National Key Basic Research Program of China(973 Program) (Grant No.2014CB239201) and the National Science and Technology Major Project of China (Grant No.2017ZX05035003). （973计划）
