Abstract
This paper describes experimental research on two-phase flow of supercritical CO_2 and water in a porous medium. We used a magnetic resonance imaging (MRI) technique to directly visualize the distribution of supercritical CO_2 injected into a packed bed of glass beads containing water. After the CO_2 displaced much of the water, about 20% of water remained in the porous medium under the condition at the depth of 1000m. Supercritical CO_2 moves upward swiftly due to buoyancy.
