Resolution effect in X-ray microcomputed tomography imaging and small pore’s contribution to permeability for a Berea sandstone

•A Berea sandstone sample was scanned twice under two different resolutions.•Higher resolution affect pore characteristic parameters by including small pores.•But small pores do not influence permeability (K) significantly.•Using diffusional tortuosity can estimate K better than geometric tortuosity...

Ausführliche Beschreibung