Correlations for petrophysical parameters and saturation dependent transport propertiesare usually grouped by “rock type”. This is a broad classification including quantitativemeasures such as porosity, permeability, pore and throat size distributions, poreconnectivity and qualitative descriptions of rock fabric and texture. Rock typing is basedon conventional core analysis data (porosimetry, permeametry, mercury injectioncapillary pressure (MICP)), special core analysis (SCAL), wireline logs (electrofacies),description of cuttings and depositional environment, and thin-section analysis. Thebroad nature of this classification has obvious limitations and fails to fully capture thecomplex dependence between pore space geometry and topology (rock micro-structure)and petrophysical properties.
