Coupling Geomechanical–Breakthrough Behavior
Caprock integrity during gas injection is governed by a strongly coupled geomechanical–breakthrough process, yet deformation and fluid breakthrough are often treated as separate problems. This study aims to establish a fundamental understanding of the coupled process by directly relating short- and long-term deformation, porosity evolution, and permeability change to fluid breakthrough behavior. The work explicitly evaluates the roles of stress history (overconsolidation ratio and loading path), pore-fluid chemistry (oil versus brine systems), and injected gas type (CO2, H2, CH4) on time-dependent deformation, strength, and permeability evolution. The objective is to resolve how stress history and fluid–rock interactions control the hydromechanical response across the breakthrough transition in clay-rich caprocks and shales.
Publications
- Park, S., Choi, H., Kim, K. (2026). Pore Fluid Effects on the Consolidation and Creep Behavior of Clay-Rich Mudrocks: Experimental Study on Brine/Oil Saturated Kaolinite. (Under Review).
- Park, S., Park, H., Choi, H., Kim, K. (2026). The Effect of Stress History on the Hydraulic Properties and Geomechanical Behavior of Caprock During CO2 Breakthrough. (Under Review).