准噶尔盆地阜东斜坡带头屯河组伊/蒙混层分布规律及其主控因素研究  

Analysis on distribution of illite/montmorillonite mixed layer and its controlling factors in the Toutunhe formation in Fudong slope area of Junggar basin

作　　者：于景维 魏芬[2] 文华国[3] 李东旭[2] 祁利祺 钟世博 王鑫 YU Jingwei;WEI Fen;WEN Huaguo;LI Dongxu;QI Liqi;ZHONG Shibo;WANG Xin(Institute of Petroleum,China University of Petroleum(Beijing)at Karamay,Karamay 834000,Xinjiang,China;The First Oil Production Plant in Xinjiang Oilfield,Kelamayi 834000,Xinjiang,China;Institute of Sedimentary Geology,Chengdu University of Technology,Chengdu 610059,Sichuan,China)

机构地区：[1]中国石油大学(北京)克拉玛依校区石油学院,新疆克拉玛依834000 [2]新疆油田分公司采油一厂,新疆克拉玛依834000 [3]成都理工大学沉积地质研究院,四川成都610059

出　　处：《河南理工大学学报（自然科学版）》2019年第6期39-46,共8页Journal of Henan Polytechnic University（Natural Science）

基　　金：国家重大科技专项项目(2011ZX05001-005-01);中国石油大学(北京)克拉玛依校区人才引进项目(RCYJ2016B-01-010);新疆维吾尔自治区青年基金资助项目(2016D01B012);克拉玛依市科技局科研项目(sk2016-42)

摘　　要：准噶尔盆地阜东斜坡带侏罗系头屯河组中存在大量伊/蒙混层矿物。为提高储集层评价准确性,以便后期开发方式的调整,通过野外剖面和岩心观察,结合薄片分析、扫描电镜、X-衍射等微观测试分析手段,对研究区头屯河组砂岩储集层中伊/蒙混层的成因、分布规律及其主控因素进行了详细研究。研究区成岩成因的伊/蒙混层较为普遍,镜下呈不规则弯曲片状、似花朵状包绕碎屑。伊/蒙混层相对质量分数在纵向上呈现旋回式变化,平面上分布主要和沉积微相及距剥蚀线远近有关。研究结果表明,凝灰岩岩屑以及长石矿物为伊/蒙混层形成的物质基础,流体动力环境对伊/蒙混层的分布起到重要控制作用。There are a large number of illite/montmorillonite mixed layers in the Toutunhe formation in the Fudong slope area of Junggar basin.In order to improve the accuracy of reservoir evaluation and to adjust development mode in later stage,the genesis,distribution and its controlling factors of illite/montmorillonite mixed layer in the sandstone reservior in the study area were studied through field observation of section and drilling cores combined with thin section analysis,scanning electrom microscope(SEM)and X-ray diffraction and other microscopic tests.Illite/montmorillonite mixed layers of diagenesis causes in the study area were widespread.It was irregularly curved pieces and shaped like a flower wrap around debris under SEM.The relative mass fraction of the illite/montmorillonite mixed layers exhibited a cyclical change in the longitudinal direction,and the distribution on the plane was mainly related to the sedimentary microfacies and the distance from the ablation line.The results showed that tuff debris and feldspar minerals were material basis for formation of illite/montmorillonite mixed layers,and the fluid dynamic enviroment palyed an important role in controlling the distribution of illite/montmorillonite mixed layers.

关 键 词：准噶尔盆地 阜东斜坡带 头屯河组 黏土矿物 伊/蒙混层 

分 类 号：P579[天文地球—矿物学]