摘要:依据野外露头、岩心、测井及相关测试资料,对鄂尔多斯盆地延长组长7沉积类型及特征进行了研究,探讨了其与油气富集规律的关系。研究表明,鄂尔多斯盆地长7属于三角洲相、深湖相两种类型。进一步可分为三角洲平原、三角洲前缘、半深湖-深湖等沉积亚相。并对各亚相及其相关微相与砂体的时空展布特征进行了分析。
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