新疆鄯善油田碎屑岩中的粘土矿物特征

Properties of Clay Mineral of Clastic Rock in Shanshan Oil Field,Xinjiang

根据碎屑岩薄片、扫描电镜观察和Ｘ－衍射资料，分析了鄯善油田中侏罗统碎屑岩中的粘土矿物特征。得出了碎屑岩中的自生粘土矿物分为伊／蒙混层、伊利石、绿泥石和高岭石４种基本类型；自生粘土矿物的形成与碎屑岩的碎屑组分有着密切的关系；粘土矿物是影响鄯善油田碎屑岩物性的重要因素。

The properties of clay Minenral in middle Jurassic clastic rock from Shanshan Oil Field were studied by means of thin section,scanning electron microscope and X ray diffraction. It is suggested the authigenic clay mineral in clastic rock be classified into four types,named mixed layer of illite and montmorillonite, illite,chlorite and kaolinite. The formation of authigenic clay minoral is related to clastic components of clastic rocks. The clay mineral is a major factor of finfluence on the physical properties of clastic rock in Shanshan Oil Field.