Time-evolution of ScCO2-weakened coal integrity: Chemo-hydromechanical coupling and geological sequestration implications

• Published in: International journal of mining science and technology Vol. 35; no. 6; pp. 961 - 973
• Main Authors: Liu, Peng, Yang, Jingtao, Nie, Baisheng, Liu, Ang, Zhao, Wei, Xu, Hao, He, Hengyi
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.06.2025; Elsevier
• Subjects: CO2 sequestration; Coal mechanics; Nanoindentation; Reservoirs stability; CO2 sequestration; Coal mechanics; Nanoindentation; Reservoirs stability

Geological sequestration of CO2 is critical for deep decarbonization, but the geomechanical stability of coal reservoirs remains a major challenge. This study integrates nanoindentation, XRD/SEM-EDS chemo physical characterization and 4D CT visualization to investigate the time-evolving mechanical d...