论文部分内容阅读
以塔里木盆地粘土矿物的分布特征及其组合形式、演化与形成机理为依据,探讨了粘土矿物在地层划分对比中的应用及其与有机质热演化、成岩阶段的关系和对储层物性的影响。研究表明,在侏罗系和白垩系两个不同古环境中形成的粘土矿物及其组合特征,为地层对比提供了一定的证据。泥岩中伊利石/蒙皂石间层中蒙皂石含量的纵向变化与有机质热演化及成岩阶段的关系不大。对储层物性影响不大但有利于储集性能的是以高岭石为主的粘土矿物组合类型及粘土矿物的早期自生(伊利石/蒙皂石间层矿物)衬垫式以及非自生(伊利石)衬垫式产状。
Based on the distribution of clay minerals and their combination, evolution and formation mechanism in the Tarim Basin, the authors discussed the application of clay minerals in the stratigraphic division and correlation and its relationship with thermal evolution and diagenesis of organic matter and the impact on reservoir physical properties. The study shows that the clay minerals and their assemblages formed in two different paleo-environments of Jurassic and Cretaceous provide some evidence for the stratigraphic correlation. Longitudinal changes of smectite content in the illite / smectite interlayer of mudstone have little to do with the thermal evolution and diagenetic stage of organic matter. Little effect on reservoir physical properties, but is conducive to the reservoir performance is based on kaolinite-based clay mineral combination types and clay minerals early self (illite / smectite mineral) liner type and non-spontaneous Illite) padding-like shape.