聚合物微球驱油对比相对渗透率研究  

Contrast of Polymer Microsphere Flooding with Relative Permeability in Waterflooding

作　　者：李勇[1] 史磊[2] 崔延杰[2] 刘夏[1] 曾利军[1] 王磊[1] 杨静[3] 刘欢[4] 

机构地区：[1]中石油华北油田分公司勘探开发研究院,河北任丘062552 [2]中石油华北油田分公司采油工程研究院,河北任丘062552 [3]中石油华北油田分公司技术监督检验处,河北任丘062552 [4]中石油华北油田分公司采油三厂,河北河间062450

出　　处：《长江大学学报（自科版）（中旬）》2015年第3期61-64,6,共4页Journal of Yangtze University(Nature Science Edition)

摘　　要：为了进一步研究聚合物微球驱油过程及多相渗流规律驱油机理,采用非稳态法对2组共4块人造岩心在模拟油藏条件下分别进行水驱油和聚合物微球驱油试验,对比分析了4块岩心建立的束缚水饱和度、残余油饱和度、驱替压力、绝对渗透率和相对渗透率、驱油效率的变化特征。结果表明:4块岩心饱和油建立相近的束缚水饱和度,对比水驱油和聚合物微球驱油,后者的残余油明显减小,驱替压力提高,等渗点明显右移,采收率明显提高。In order to further study the regularities of polymer microsphere flooding and multiphase flow displacement mechanism,the unsteady method was adopted to test two groups of 4 pieces of artificial cores under simulated reservoir conditions based on waterflooding and polymer microsphere flooding experiment.The characteristics of irreducible water saturation,residual oil saturation,displacement pressure,absolute permeability and relative permeability of the four cores were analyzed.The experimental results show that the four core of saturated oil is used to establish a close irreducible water saturation,it is contrasted with water flooding,the relative permeability of polymer microspheres flooding show that residual oil is reduced significantly,displacement pressure is raised,the equal permeability point is moved right ward,oil recovery efficiency is improved significantly.

关 键 词：聚合物微球 相对渗透率 束缚水饱和度 提高采收率 

分 类 号：TE357.461[石油与天然气工程—油气田开发工程]