Test analysis method for convection heating of medium-low maturity shale by supercritical CO2

The invention discloses a test analysis method for medium-low maturity shale convection heating through supercritical CO2, and relates to the technical field of shale tests. The test analysis method for low-maturity shale in supercritical CO2 convection heating comprises the steps of sample preparation, convection heating reaction, physicochemical characteristic analysis, microstructure characteristic analysis, pyrolysis characteristic analysis and action mechanism comprehensive evaluation. On the basis of a supercritical CO2 convection heating in-situ conversion medium-low maturity shale oil technology, a plurality of experimental means are used under an indoor test scale, and a physical and chemical change mechanism, a microstructure change mechanism, a pyrolysis mechanism and the like of the supercritical CO2 convection heating medium-low maturity shale are analyzed from a plurality of angles; according to the method, the action mechanism of the supercritical CO2 convection heating medium-low maturity shal