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鄂尔多斯盆地东部上古生界黏土矿物主控因素分析及研究意义 被引量:9

Controlling Factors of Upper Paleozoic Clay Minerals in the Eastern Ordos Basin and Its Study Significance
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摘要 利用铸体薄片、扫描电镜及X射线衍射等分析资料对鄂尔多斯盆地东部主要含气层系黏土矿物的特征进行分析,盆地东部黏土矿物主要受物源区母岩、沉积相和成岩作用特征等方面影响,不同层系黏土矿物受影响程度不同,其中二叠系石千峰组千五段和石盒子组盒八段受物源区母岩和沉积相影响较大,山西组二段和太原组受成岩作用和沉积相影响作用明显;加强对不同层系黏土矿物的特征研究,可明确主要含气层系储层的潜在敏感性,这个初步结论对有针对性地保护储层和储层改造具有一定的借鉴意义。 The thin-section, "X" diffraction and scanning electricity microscopy observation were used to analyze the characteristics of the main gas-bearing clay minerals.This study shows that various clay minerals in the eastern Ordos Basin can be affected by the features of host rock,sedimentary facies and diagenesis.Among them,the fifth section of the Shiqianfeng Formation and the eighth section of Shihezi Formation were badly affected mainly by source rock and sedimentary facies,and the second section of Shanxi Formation and Taiyuan Formation affected distinctly by diagenesis and sedimentary facies.Therefore,to strengthen the study on the characteristics of clay minerals of different layers can distinguish the potential sensitivity of main reservoir.This preliminary conclusion may providecertain reference for the protection and reformation of the reservoir.
出处 《地质学报》 EI CAS CSCD 北大核心 2016年第3期534-540,共7页 Acta Geologica Sinica
基金 国家科技重大专项项目(编号2011ZX05044)资助成果
关键词 鄂尔多斯盆地东部 黏土矿物 主控因素 eastern Ordos basin clay mineral controlling factors
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