鄂尔多斯盐定地区长81段沉积体系分析与圈闭评价

Science Technology and Engineering(2014)

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Abstract
近年来,盐定地区具有良好的油气发现,在多个含油气富集区建产,勘探开发潜力巨大.首次将长81段精细划分为两个砂体组,根据沉积背景和重矿物组合分析,认为研究区长81时期主要有北部和北西两个物源方向.通过分析研究区砂体沉积展布及圈闭成因,将砂岩顶面构造图与砂体展布图叠合,进行圈闭评价,得出研究区长81存在8个现实圈闭和2个评价圈闭,为下步有利区勘探和油田滚动开发提供依据.
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Key words
ordos basin,yanding area,yanchang formation,sedimentary system,traps evaluation
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