Numerical Simulation of Multiphase Hydromechanical Processes Induced by CO2 Injection into Deep Saline Aquifers
Résumé
In this paper, the conceptual modeling and the numerical simulation of two-phase flow
during CO2 injection into deep saline aquifers is presented. The work focuses
on isothermal short-term processes in the vicinity of the injection well. Governing
differential equations are based on balance laws for mass and momentum, and completed by
constitutive relations for the fluid and solid phases as well as their mutual
interactions. Constraint conditions for the partial saturations and the pressure fractions
of CO2 and brine are defined. To characterize the stress state in the solid
matrix, the effective stress principle is applied. The coupled problem is solved using the
inhouse scientific code OpenGeoSys (an open source finite element code) and verified with
benchmarks.
Domaines
Physique [physics]
Origine : Publication financée par une institution