Hydromechanical Modeling of CO2 Injection in Deformable Porous Media

Storing CO2 in deep saline aquifers is a key strategy for carbon capture and storage, an essential technology in the global effort to mitigate greenhouse gas emissions. Several mathematical and computational models have been proposed to simulate CO2 storage in geological formations [1-3]. These models aim to comprehensively capture the intricate interactions between fluids, gases, and geological media. In this study, we propose a novel quadrilateral finite element designed to simulate the flow of CO2 and water in an isothermal deformable porous medium. This element has been developed in user element subroutine (UEL) of Abaqus. The balance equations include momentum balance, as well as the mass balance of CO2 and water as outlined in prior research [2]. The proposed element is used to simulate certain tests, and preliminary results are presented.