CCS and Power Systems
Carbon Storage - Geologic Storage Technologies and Simulation and Risk Assessment
Area 1: Influence of Local Capillary Trapping on Containment System Effectiveness
Performer: University of Texas at Austin
Project No: FE0004956
Researchers have developed algorithms to estimate volume of local capillary traps from geologic model. These algorithms were tested against full-physics simulations. In addition, researchers evaluated influence of "critical capillary entry pressure" on potential capillary traps and found that this is a useful parameter when identifying potential traps.
The project team designed, built, and operated apparatus to study role of heterogeneity on buoyancy-driven flow. Researchers confirmed that migration of buoyant phase through a barrier region (occupied by smaller beads or grains) occurs when the phase column height exceeds the entry pressure of defects within the barrier region, or at the boundary between porous medium and wall of apparatus.