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机构地区:[1]石油大学炼制系
出 处:《石油大学学报(自然科学版)》1996年第1期123-126,共4页Journal of the University of Petroleum,China(Edition of Natural Science)
摘 要:扫描电镜(SEM)观察分析是研究储集砂岩成分和成岩作用的重要手段.通过对临盘油田盘二断块沙三下储层的电镜观察分析发现,该套储层埋藏较浅,机械压实作用较弱,原生粒间孔隙较发育.研究还表明,砂岩的胶结物以粘土矿物为主,其中主要是自生高岭石和伊/蒙混层矿物,胶结疏松,具有较好的储集性,但又易出砂.因此,在进行油田开发方案调整时,应充分考虑这些因素.The observation and analysis under scanning electronic microscope (SEM) are an important method for studying composition and diagenesis of reservoir sandstones. A detailed analysis under SEM showed that sandstones of the studied reservoir have such features as shallow burial weak compaction and well developed primary porosity. Cements of the sandstones are mainly clay minerals, in which kaolinite and I/S mixed layers dominate.Because of weak cementation of the sandstones, the reservoir has good physical parameters at the expense of high sand production. These factors must be considered in the adjustment of the oilfield development scheme.
分 类 号:P618.130.2[天文地球—矿床学]
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