Pore network modeling of thin water film and its influence on relative permeability curves in tight formations

The thin water film stabilized by disjoining pressure is non-negligible in tight formations which results significant difference multiphase flow behavior compared with that conventional formations. In this work, a pore network model proposed to simulate two phase highlight the contribution of on flow. newly developed includes influence fluid configuration, capillary entry pressure, conductance and connectivity during space. Our approach first validated existing then two-phase investigated extensively. show connate saturation increases its associated oil relative permeability decreases as average radius decreases. It also suggests water-wet systems, both phases becomes when smaller than 100 nm. Existence will increase proportion corner water, resulting an increasement slight decline porous media dominated angular pores throats; while circular shaped throats, are enhanced due better caused film; at same time swelling lower residue higher end point permeability. We found has more irregular pores.