A facility for digital imaging, visualizing, and calculation of reservoir rock properties in three dimensions is described. The facility includes a high-resolution X-ray microcomputed tomography (CT) system. The study demonstrates the potential to predict petrophysical properties from core material not suited for laboratory testing (e.g., drill cuttings, sidewall core, or damaged core) and the feasibility of combining digitized images with numerical calculations to predict properties and derive correlations for individual-reservoir rock lithologies.