Advanced modeling of enhanced CO2 dissolution trapping in saline aquifers

A consistent thermodynamic model based on a combination of the Peng-Robinson equation state for gas components with an activity aqueous phase is utilized in this study to accurately evaluate performance geologic CO2 storage saline aquifers. To account thermal effects, enthalpy and conductivity are derived consideration dissolution brines. Several conceptual numerical setups variations parameters physics constructed investigate enhanced In addition, realistic geological structure considered potential storing at field scale. Our simulation results show that presence capillary transition zone (CTZ) can significantly reduce onset time enhance rate. The temperature has crucial effect trapping compared isothermal assumptions. Thermal conduction convection suspend mass convection, while final flux augmented. Heat smears out difference between rocks fluids, thus suppressing fingering. We demonstrate 3D aquifers be different from their 2D analogues. field-scale rate increases sharply once dominates migration which corresponds reduction residual trapping. Besides, high-resolution required resolving heterogeneous reservoirs. An efficient multi-scale framework accurate evaluation proposed purpose.