Visualization characterization of minerals touched by interconnected pores and fractures and its demineralization effect on coal permeability during CO2-ECBM process based on X-ray CT data

The purpose of this study is to visually reconstruct the minerals touched by connected pores and fractures and reveal their demineralization process, which is of great significance for the analysis of permeability evolution during CO2-ECBM process. Two samples collected from Qinshui basin were taken as the research object. Firstly, the definition, reconstruction, and demineralization processes of such minerals were realized, and the evolution of...