化工学报2024，Vol.75Issue(z1)：56-66,11.DOI:10.11949/0438-1157.20240241
多孔介质中乳状液驱油的两相流动过程及其影响因素
Two-phase flow of emulsion flooding and its influencing factors in porous media
摘要
Abstract
The process and mechanism of emulsion flooding is the basis for the development of emulsion flooding technology.A microfluidic visualization system was established to explore the two-phase flow characteristics of emulsion flooding and its influencing factors in porous media.The results show that the displacement mode of water and surfactant is viscous fingering,and the emulsion flooding is accompanied by droplets plugging,which can effectively inhibit viscous fingering,enhance interfacial stability and improve the displacement efficiency.The influences of capillary number,viscosity ratio and droplet to pore size ratio on the emulsion flooding were explored,and by establishing the distribution phase diagram of emulsion displacement mode with different viscosity ratio and capillary number,the transformation boundaries of stable displacement and viscous fingering of nanoparticle surfactants displacement in porous media is obtained.It is proved that emulsion can substantially increase the critical capillary number and viscosity ratio required for viscous fingering to occur,and effectively improve the spread efficiency and displacement efficiency,which provides a theoretical basis for the use of emulsion in actual crude oil extraction.关键词
多孔介质/两相流/微通道/乳状液驱/提高采收率Key words
porous media/two-phase flow/microchannels/emulsion flooding/enhanced oil recovery分类
能源科技引用本文复制引用
李雨霜,王兴成,温伯尧,骆政园,白博峰..多孔介质中乳状液驱油的两相流动过程及其影响因素[J].化工学报,2024,75(z1):56-66,11.基金项目
国家自然科学基金项目(52206207,51976160) （52206207,51976160）
