To address the climate change and reduce the emission of CO2, CO2 storage in the deep saline aquifer is one of the promising technologies. The visualization experimental system was set up to investigate the CO2 migration mechanism during the displacement of supercritical CO2 and water inside the core rock. From the experimental system, the experiment measured porosity, calculated the relative permeability-water saturation curve the water distribution will be achieved. The porosity can be measured accurately using MR technique. The fraction of effective porosity and movable fluid can be calculated, according to the T2 curve from MR. The MRI for core slice with the injection ratio of CO2:H2O=3:1 shows remarkable buoyancy effect. Core-scale experimental study on supercritical-pressure CO2 migration mechanism during CO2 geological storage in deep saline aquifers. Available from: https://www.researchgate.net/publication/279937649_Core-scale_experimental_study_on_supercritical-pressure_CO2_migration_mechanism_during_CO2_geological_storage_in_deep_saline_aquifers [accessed Jun 7, 2017].