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姬塬油田长2储层成岩作用研究及其对物性的影响

Petroleum Geology and Engineering(2016)

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Abstract
通过扫描电镜、铸体薄片、高压压汞、X-衍射及薄片鉴定等方法定性分析了姬塬地区成岩作用对长2储层物性的影响,用定量计算的方法表征各类成岩作用之后孔隙的演化情况.研究结果表明:长2储层砂岩原始孔隙度为37.65%,其中未固结砂岩49.17%的原生粒间孔被压实损失,25.83%的粒间孔被胶结充填,研究区长石溶蚀较发育,产生大量次生孔隙,增加了4%的孔隙.定量计算结果与定性认识较一致.
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