01829nab a2200193 4500 20260520002021.0 260224s2011 xxu Pore-level investigation of oil-mobility enhancement in heavy-oil reservoirs may. 2011 07/09/2011 ; 07/09/2011 16 p. ; 59-74 Transcripción del resumen del autor. One of the most important properties for understanding multiphase flow in porous media is relative permeability. In two-phase flow, the relative permeability to a given phase is generally assumed only to be a function of its saturation, independent of the properties of fluids involved and/or flow conditions and ranging from zero to unity. Considering the physical principles of multiphase flow through porous media, the momentum transfer or viscous coupling appears as a hidden driving mechanism that might lead to higher than expected oil-flow rates. In an effort to provide a better understanding of oil mobility in heavy-oil reservoirs, a capillary model is used to assess the importance of lubrication in two-phase flow and to determine the effect of the viscous coupling on relative permeabilities. Different cross-sectional geometries are analyzed. The problem is addressed analytically even for the unequal-viscosity case by making use of the Galerkin method. The concept of contact angle is used in the determination of the fluid distribution inside a noncircular channel. The model results show that the viscosity ratio theoretically affects relative permeabilities, especially in systems involving heavy oil. 5 Journal of Canadian Petroleum Technology 50 ARTICULO Ortiz-Arango, Julian D. 51492 Kantzas, Apostolos 51456 185451 185451 0 0 0 0 253270 BAAB BAAB 2026-03-06 200057527 0 200057527 2026-03-06 00:10:46 2026-03-06 ARTICULO