Migration of CO2 in Porous Media Filled with water.
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概要
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This paper describes experimental research on two-phase flow of supercritical carbon dioxide (CO2) and water in porous media under sequestration conditions. We used a magnetic resonance imaging technique to directly visualize the distribution of supercritical CO2 injected into porous media containing water. In-situ water saturation distributions in a Berea sandstone core and a packed bed of glass beads were successfully visualized at conditions that simulate those at 700 - 1000-m depths in an aquifer. By applying a coreflood interpretation method to our saturation data, we could describe the local Darcy phase velocities and capillary dispersion rate as a function of saturation. Next, the effect of buoyancy on the displacement process and gravity-dominated pure counter-current flow is discussed by comparing the data obtained at two conditions that model the aquifers at depths of 700 m and 1000 m. We found that buoyancy largely controls the pure counter-current flow in permeable porous media for conditions at 700 and 1000-m depths.
著者
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Suekane Tetsuya
Research Center For Carbon Recycling And Energy Tokyo Institute Of Technology
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HIRAI Shuichiro
Research Center for Carbon Recycling and Energy, Tokyo Institute of Technology
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Tsushima Shoji
Research Center For Carbon Recycling And Energy Tokyo Institute Of Technology
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Hirai Shuichiro
Research Center for Carbon Recycling & Utilization, Tokyo Institute of Technology
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ISHII Toshihiro
Research Center for Carbon Recycling and Energy, Tokyo Institute of Technology
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