Incorporation of Sub-Resolution Porosity into Two-Phase Flow Models with a Multiscale Pore Network for Complex Microporous Rocks

• A dilation-based algorithm adds sub-resolution porosity, quantified by differential imaging, as microlinks to an extracted pore network. • Empirical models are used to characterize the flow properties of microlinks. • The tuned multiscale network, using permeability, formation factor, and drainage capillary pressure, matches experimental relative permeability.