多孔介质通道内非混相驱替过程的格子Boltzmann方法模拟  

Lattice Boltzmann simulation for CO_2 foam flow in porous media

作　　者：刘佳威 许志美[1] 宗原[1] 刘涛[1] 

机构地区：[1]华东理工大学化工学院化学工程联合国家重点实验室,上海200237

出　　处：《石油化工》2017年第11期1347-1354,共8页Petrochemical Technology

摘　　要：针对CO_2泡沫相与原油体系,基于Shan-Chen伪势格子Boltzmann模型,耦合液-液、液-固间相互作用力与界面张力、液固润湿性之间的关系,对多孔介质通道内CO_2泡沫驱流动规律进行数值模拟,研究了雷诺数(Re)、毛细数(Ca)和壁面润湿性对非混相两相驱替流动中黏性指进的影响。实验结果表明,随Re和Ca的增大,黏性指进显著发展,驱替效率降低;壁面润湿时,无明显指进现象,而当壁面非润湿时,黏性指进较为明显,且随非润湿性程度的增加而愈发严重。在进行两相驱替流动时,需综合物性及驱替流体与固壁的润湿情况,确定驱替流体的注入条件,以提高驱替效率。The relationship between liquid-liquid interaction, solid-liquid interaction and surface tension, surface wettability is coupled with Shan-Chen pseudopotential lattice Boltzmann model, and the flow phenomena of carbon dioxide foam through porous media is simulated. The effects of Reynolds number（Re）, capillary number（Ca） and surface wettability on viscous fingering is investigated. The simulation has demonstrated that the viscous fingering phenomena will be enhanced significantly with the increase of Re and Ca. While, no obvious viscous fingering can be observed when the surface is wetting to the displacing fluid. On the contrary, the viscous fingering phenomena is intensified when the surface is non-wetting to the displacing fluid. It＇s illustrated that the injection conditions should be set according to the fluids properties and wettability to ensure high displacement efficiency.

关 键 词：Shan—Chen伪势格子Boltzmann方法 驱替 二氧化碳 

分 类 号：TQ021.1[化学工程]