Pressure-driven wettability evolution and multiscale capillary sealing during CO2 penetration into mudstone caprocks

Key Points

• Capillary sealing evolves significantly during CO2 penetration into mudstone.
• Pressure-driven wettability changes were observed, enhancing sealing effectiveness.
• Observational analysis across various scales demonstrates fluid mechanics principles at work.
• This highlights potential strategies for improving carbon capture and sequestration efficiency.