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Controlling factors of favorable reservoir development of the Chang 8 reservoir in Mafang area
Author(s): 
Pages: 91-97
Year: Issue:  5
Journal: Petrochemical Industry Application

Keyword:  有利储层长8油层组成岩相马坊地区鄂尔多斯盆地;
Abstract: 通过铸体薄片、扫描电镜和物性分析,认为鄂尔多斯盆地马坊地区延长组长8油层组的储层为低孔低渗砂体.储层岩石类型以长石岩屑砂岩和岩屑长石砂岩为主,填隙物以伊利石和绿泥石粘土矿物和铁方解石胶结物为主,胶结作用对储层的破坏严重.储层孔隙类型以环边绿泥石膜形成的原生粒间孔和溶蚀孔.马坊地区长8油层组优质储层的分布主要受沉积作用和成岩相的影响.分流河道和水下分流河道主河道的位置是有利储层发育区.优质储层主要受高岭石弱溶蚀相、长石溶孔相、环边绿泥石薄膜相发育带的控制.马坊地区长8油层组优质储层分布于水下分流河道砂体和分流河道砂体有关的绿泥石薄膜相和长石溶孔相.
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