Understanding of Long-Term CO₂-Brine-Rock Geochemical Reactions Using Numerical Modeling and Natural Analogue Study

To further understand the interactions of CO 2 -brine-rock at geological time scales, in this study, a 1D reactive transport model of CO 2 intrusion into sandstone of the Longtan Formation (P 2 l) in the Huangqiao area, China, was constructed based on site-specific data. The simulation time is consistent with the retention time of CO 2 in the Longtan sandstone Formation and is set to 20 Ma. The reactive transport model is calibrated and revised...