Open AccessPore-scale investigation of factors influencing polymer flooding in dual-permeability porous media
Author(s) -
Jie Hu,
Aifen Li
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/631/1/012061
Subject(s) - porous medium , permeability (electromagnetism) , water flooding , materials science , polymer , relative permeability , viscous fingering , enhanced oil recovery , petroleum engineering , oil field , porosity , displacement (psychology) , viscosity , composite material , chemistry , geology , membrane , psychology , biochemistry , psychotherapist
In present work Cahn–Hilliard phase field coupled with Navier-Stokes equations were solved using finite element method to simulate polymer flooding in a dual-permeability porous medium, the effect of injection rate, oil viscosity and oil density on polymer displacement oil process was quanlitatively and quantitatively investigated. The simulated models realistically captured the micro mechanism during polymer flooding, e.g., oil film thinning and rupture, profile conformance enhancement. The result shown that with the injection rate increase, water displacement efficiency increase, however, an optimal injection rate exists for water flooding in dual-permeability porous media. under the intermediate injection rate flooding, polymer flooding could gain an incremental oil recovery up to 40.7%.