Characterization of tight gas reservoir pore structure using USANS/SANS and gas adsorption analysis

► SANS/USANS is used to characterize pore structure of a tight gas reservoir. ► The dominant pores in three tight gas samples are in the mesopore/macropore range. ► SANS/USANS-derived surface areas are higher than those derived from adsorption. ► SANS/USANS-derived porosities are higher than those derived from helium porosimetry. ► Open versus closed porosity can be determined from the combined techniques.