论文部分内容阅读
对华 1 5 2井区沉积微相与含油性进行了较全面的分析 ,认为华 1 5 2井区长 3油层的沉积相为吴旗—华池三角洲前缘亚相的一个分支 .根据其岩性、电性及沉积构造特征 ,将其划分为 4个沉积单元 .每个单元又划分为水下分流河道、河口坝、天然堤、分流间洼地、分流间湾 5个沉积微相 ,每个沉积微相都有其独特的特点和沉积空间展布规律 .分析这些特征和规律 ,展示出华 1 5 2区长 3砂层是由水下分流河道砂体、河口坝砂体等多个微相叠合而成的复杂叠合体 ,从而构成典型的建设型鸟足状三角洲前缘砂体 .这一砂体的特征是鄂尔多斯盆地延长组上部储层的典型代表 ,也是形成油藏的主要砂体
A comparatively comprehensive analysis of sedimentary microfacies and oil-bearing properties in the Well 152 of China shows that the sedimentary facies of Chang 3 reservoir in Well W155-2 is a branch of the Wuqi-Wachi Basin delta front. According to Lithology, electrical property and sedimentary structure, and divided them into four sedimentary units, each unit is divided into five subfacies: underwater distributary channel, estuarine dam, natural bank, subsidence shunt, Each sedimentary microfacies has its own unique characteristics and depositional space distribution rules.Analysis of these characteristics and laws shows that the 5 sand layers of the 3 member capitals are composed of underwater distributary channel sand bodies and estuarine bar sand bodies Micro-phase superimposed complex composed of complex, which constitutes a typical construction type bird-shaped delta front sand body.The characteristics of the sand body is Ordos Basin Yanchang Formation upper reservoir representative of the reservoir is also the main Sand body