Two-phase flow thermo-hydro-mechanical modeling for a water flooding field case  

作　　者：Yuhao Liu Fengshou Zhang Dingwei Weng Hongbo Liang Chunming He Keita Yoshioka 

机构地区：[1]Key Laboratory of Geotechnical&Underground Engineering of Ministry of Education,Tongji University,Shanghai,200092,China [2]Department of Geotechnical Engineering,College of Civil Engineering,Tongji University,Shanghai,200092,China [3]PetroChina Research Institute of Petroleum Exploration&Development,Beijing,100083,China [4]CNPC Key Laboratory of Oil&Gas Reservoir Stimulation,Langfang,065007,China [5]Department of Petroleum Engineering,Montanuniversitat Leoben,Leoben,Leoben,8700,Austria

出　　处：《Rock Mechanics Bulletin》2024年第3期81-90,共10页岩石力学通报（英文）

基　　金：supported by the National Key Research and Development Project(No.2023YFE0110900);National Natural Science Foundation of China(No.42320104003,42077247).

摘　　要：Simulation of subsurface energy system involves multi-physical processes such as thermal,hydraulical,and mechanical(THM)processes,and requires a so-called THM coupled modeling approach.THM coupled modeling is commonly performed in geothermal energy production.However,for hydrocarbon extraction,we need to consider multiphase flow additionally.In this paper,we describe a three-dimensional numerical model of non-isothermal two-phase flow in the deformable porous medium by integrating governing equations of two-phase mixture in the porous media flow in the reservoir.To account for inter-woven impacts in subsurface condi-tions,we introduced a temperature-dependent fluid viscosity and a fluid density along with a strain-dependent reservoir permeability.Subsequently,we performed numerical experiments of a ten-year water flooding pro-cess employing the open-source parallelized code,OpenGeoSys.We considered different well patterns with colder water injection in realistic scenarios.Our results demonstrate that our model can simulate complex interactions of temperature,pore pressure,subsurface stress and water saturation simultaneously to evaluate the recovery per-formance.High temperature can promote fluid flow while cold water injection under non-isothermal conditions causes the normal stress reduction by significant thermal stress.Under different well patterns the displacement efficiency will be changed by the relative location between injection and production wells.This finding has provided the important reference for fluid flow and induced stress evolution during hydrocarbon exploitation under the environment of large reservoir depth and high temperature.

关 键 词：THM coupling Two phase flow OPENGEOSYS Water flooding Field-scale model 

分 类 号：TE357.6[石油与天然气工程—油气田开发工程]