Dynamic displacement and non-equilibrium dissolution of supercritical CO2 in low-permeability sandstone: An experimental study

► Two representative low-permeability sandstone cores were studied. ► Dry CO2 and deionized water (without dissolved CO2) were used in the experiments. ► Dynamic displacement of CO2 injection was discussed. ► The non-equilibrium dissolution of supercritical CO2 and water was first observed.