鄂尔多斯盆地上里塬地区延安组储层流动单元研究  

Research on Reservoir Flow Units of Yan'an Formation in the Shangliyuan Area of Ordos Basin

作　　者：宋璠 章辉若 苏妮娜 张红 肖运凤 

机构地区：[1]中国石油大学(华东)地球科学与技术学院,青岛266580 [2]长庆油田公司勘探部,西安710018

出　　处：《科学技术与工程》2016年第6期53-58,共6页Science Technology and Engineering

基　　金：教育部博士点基金项目(20120133120013);国家科技重大专项(2011ZX05009)联合资助

摘　　要：正确划分储层的流动单元可以深化对储层非均质性的认识,对预测剩余油分布、调整开发方案、提高采收率都具有重要意义。通过将基于孔渗分析法、水力单元流动层指标FZI法、孔喉几何形状分析法、K/φ法等几种常用的流动单元识别方法相结合,利用聚类分析与Fisher判别分析方法,将鄂尔多斯盆地上里塬地区延安组砂岩储层定量划分为4类流动单元。通过对105口井流动单元类型进行序贯指示模拟,研究了延安组延8^1、延8^3、延9^1、延9^2、延10^1五套主力油层的流动单元平面展布状况。结合油藏数值模拟成果与该地区实际的生产状况,分析了各类流动单元与剩余油分布之间的关系,指出Ⅱ类、Ⅲ类流动单元是剩余油分布的主要区域,是该区挖潜的主要目标。The correct division of the flow units of a reservoir can deepen the understanding of its heterogeneity, and it is important to predicting residual oil distribution, adjusting the development plan and enhancing recovery factor. Based on the combination of some common methods such as porosity-permeability analysis, FZI index, pore geometry analysis, K/φ analysis, four kinds of flow units are identified in sandstone reservoir of Yan＇an formation in the Shangliyuan area of Ordos basin, using cluster analysis and Fisher discriminant analysis method. Through the sequential indicator simulation of different kinds of flow units from 105 wells, the flow units distribution of the five major reservoir Y81, Y83, Y91, Y92, Y101 have been studied. Combined with the reservoir numerical simulation resuits and actual production status, the relationships between reservoir flow units and remaining oil distribution arc analyzed. It is pointed that the 11 and m types of flow units are the enrichment zones of remaining oil and they are the main targets of the oilfield tapping potentiality.

关 键 词：上里塬地区 流动单元 聚类分析 FISHER判别 剩余油分布 

分 类 号：TE122.1[石油与天然气工程—油气勘探]