Numerical Aspects of Using Vertical Equilibrium Models for Simulating CO2 Sequestration

摘要

Storage of CO2 in deep saline aquifers is considered an important means to reduce anthropogenic CO2 in the atmosphere. Assessing the risk of storage operations requires accurate modeling of migration of injected CO2. However, since potential injection sites typically are very large and time-scales long, flow simulation with traditional methods from the petroleum industry is often not feasible. Also, CO2 is very mobile and the flow is usually confined to thin layers, which put severe requirements on the vertical grid resolution.