摘要
通过室内实验测试获得致密储层油水相对渗透率曲线,根据曲线形态特征划分为Ⅰ、Ⅱ、Ⅲ、Ⅳ四种类型,由Ⅰ至Ⅳ类油水两相共渗区域变小,等渗点降低;束缚水饱和度升高,油相渗流能力变差;油水两相干扰程度增强,驱油效率降低;物性逐渐变差,根据物性及孔隙结构当面开展影响油水相渗曲线变化的具体因素分析。
The oil-water relative permeability curve of tight reservoirs is obtained through laboratory test.According to the morphological characteristics of the curve,it is divided into four types:Ⅰ,Ⅱ,Ⅱ,andⅣ.The area of oil-water two-phase permeability fromⅠtoⅣbecomes smaller,and the isotonic point Decrease;the irreducible water saturation increases,the oil phase seepage ability becomes worse;the oil-water two-phase interference degree increases,and the oil displacement efficiency decreases;the physical properties gradually deteriorate.According to the physical properties and pore structure,the analysis of specific factors affecting the change of the oil-water phase permeability curve is carried out.
作者
韩进
杨波
Han Jin;Yang Bo(Yan'an University,Yan'an 716000,China;Qing Neng Aike(Shenzhen)Energy Technology Co.,Ltd.,Shenzhen 518000,China)
出处
《云南化工》
CAS
2021年第2期137-140,145,共5页
Yunnan Chemical Technology
关键词
致密油藏
相渗曲线
曲线形态
驱油效率
Tight Reservoir
Relative Permeability Curve
Curve Shape
Oil Displacement Efficiency
