Multiscale petrophysical characterization and flow unit classification of the Minnelusa eolian sandstones

•Two meaningful facies groups were found to represent the intrinsic heterogeneities of eolian sandstones•Irreducible water saturation correlates well with the NMR transverse relaxation time log-average rather than porosity.•Multiscale petrophysical characterization led to high-quality porosity-permeability correlations, in contrast to traditional workflows.•Lab and log NMR data analysis, integrated with other datasets, aided to better identify rock/flow unit quality.