Comparison of computer image analysis with mercury porosimetry in sandstone porosity measurement

Computer image analysis was used to determine porosity volume in sandstones from Upper Silesia and Jura Krakowsko-Częstochowska. Calibration of the data was made by comparison with the results of mercury injection capillary pressure methods. Image analysis can yield many useful parameters. This study obtained chosen size parameters and diameters of equivalent area circles, calculated for all samples after 100 partial observations. Results obtained by image analysis are close to those measured by mercury injection capillary pressure. They could complement standard mercury porosity measurements, and in some cases, replace them.