鄂尔多斯盆地红河油田长8油层组储层流动单元研究

发布时间：2018-06-02 12:01

本文选题：流动单元 + 聚类分析　；参考：《地质科技情报》2014年06期

【摘要】：在高分辨率层序分析的基础上,利用孔隙度、含油饱和度、流动系数3个参数,将流动单元划分为E、G、P 3类,采用序贯高斯模拟方法建立了流动单元的三维模型;分析了流动单元的垂向叠置样式与侧向分割特征,探讨了流动单元的成因类型与主控因素。认为:1G类流动单元为骨架流动单元,其平面分布受沉积微相控制,E、G类流动单元沿水下分流河道中心分布,P类流动单元分布在水下分流河道的边缘;2隔层为水下分流间湾微相泥岩,界面类型为沉积界面;岩性夹层为砂体内部发育泥质条带或泥砾,物性夹层是由成岩作用形成的非渗透岩层;3中期旋回中上部的SSC1~SSC2短期旋回主要发育单一型流动单元,流动单元在侧向上直接与非渗流层(隔层)接触,流动单元与隔挡层之间存在明显的界面;4中期旋回中下部的SSC3~SSC5短期旋回主要发育复合型流动单元,流动单元之间在侧向上没有明显的分隔界面,只是侧向相邻流动单元的渗流条件不同。
[Abstract]:On the basis of high-resolution sequence analysis, the flow unit is divided into three categories, namely, the flow unit is divided into three categories: porosity, oil saturation and flow coefficient, and the three-dimensional model of the flow unit is established by sequential Gao Si simulation method. The vertical overlay pattern and the lateral segmentation characteristics of the flow unit are analyzed, and the origin types and main controlling factors of the flow unit are discussed. It is considered that the flow unit of class 1 G is a skeleton flow unit. The plane distribution is controlled by sedimentary microfacies and the EG type flow unit distributes along the center of the underwater distributary channel. The P type flow unit distributes along the edge of the underwater distributary channel. The intertidal bay microfacies mudstone is the boundary layer of the underwater distributary channel, and the interface type is the sedimentary interface. The lithologic intercalation is a muddy belt or gravel developed in the sand body, and the physical intercalation is a single flow unit developed mainly in the SSC1~SSC2 short term cycle of the middle and upper part of the middle and upper middle cycle of the imosmotic rock bed formed by diagenesis. The flow unit is directly in contact with the non-percolation layer (barrier) on the lateral surface, and there is a clear interface between the flow unit and the barrier layer. The SSC3~SSC5 short-term cycle in the middle and lower part of the middle and lower middle cycle of the flow unit mainly develops complex flow units. There is no obvious separation interface between the flow units, but the seepage conditions of the adjacent flow units are different.
【作者单位】：华北水利水电大学;长江大学;郑州工业贸易学校;
【基金】：中国石化油气勘探开发科研基金项目(G13KJ-12-ZS-QT-ZJ-0014)
【分类号】：P618.13

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