Investigations on the methane and carbon dioxide sorption capacity of coals from the SW Upper Silesian Coal Basin, Czech Republic

► Gas storage capacity of coals of Upper Silesian Coal Basin in Czech Republic measured. ► Sorption capacity mainly influenced by pressure, temperature, moisture and rank. ► Evolution of sorption capacity during basin history estimated by different models. ► Under-saturation of coal seams related to gas loss and uplift during basin history.