基于COMSOL的多孔介质热-流-变形耦合数值模拟  

Numerical Simulation of Coupled Thermal-Fluid-Deformation of Porous Media Based on COMSOL

作　　者：李柯柯 徐颖[2] 李金宝 孙彬博 刘立君 LIKe-ke;XV Ying;LI Jin-bao;SUN Bin-bo;LIU Li-jun(School of Civil Engineering,Northeast Petroleum University,Daqing Heilongjiang 163318,China;School of Mechanical Engineering,Northeast Petroleum University,Daqing Heilongjiang 163318,China;School of Electronic and Information Engineering,Changshu University of Technology,Suzhou Jiangsu 215500,China)

机构地区：[1]东北石油大学土木建筑工程学院,黑龙江大庆163318 [2]东北石油大学机械工程学院,黑龙江大庆163318 [3]常熟理工学院电子信息工程学院,江苏苏州215500

出　　处：《当代化工》2022年第2期441-445,共5页Contemporary Chemical Industry

基　　金：中国石油科技创新基金资助项目,(项目编号:2018D-5007-0211)。

摘　　要：针对在稠油热采过程中,将高温高压流体注入油藏多孔介质所引起的岩石骨架变形、储层压力增大和油藏温度变化等问题,基于达西定律,应用连续介质力学和能量守恒定律,建立了稠油热采过程中的热-流-变形耦合方程,对基于REV尺度建立的多孔介质进行数值模拟计算和分析。结果表明:增加渗透率对多孔介质的效果优于增加入口温度和压力;增加入口压力能够增加热量传递速度;增加入口温度会导致骨架变形量增大,岩石破裂。Aimed at the problems of rock skeleton deformation,reservoir pressure increase and reservoir temperature change caused by the injection of high temperature and high pressure fluid into the porous medium of the reservoir during the thermal recovery of heavy oil,based on Darcy’s law,using continuum mechanics and the law of conservation of energy,the coupled heat-fluid-deformation equation in the thermal recovery process of heavy oil was established,the porous media based on REV scale was numerically simulated and analyzed.The results showed that increasing permeability had better effect on porous media than increasing inlet temperature and pressure.Increasing inlet pressure could increase heat transfer velocity;Increasing inlet temperature could result in the increase of skeleton deformation and rock fracture.

关 键 词：热-流-变形 多孔介质 数值模拟 渗透率 

分 类 号：TE345[石油与天然气工程—油气田开发工程]