000			01829nab a2200193 4500
005			20260520002021.0
008			260224s2011 xxu
245	0	0	_aPore-level investigation of oil-mobility enhancement in heavy-oil reservoirs
260			_a _b _cmay. 2011
270			_a07/09/2011 ; 07/09/2011
300			_a16 p. ; 59-74
520			_aTranscripción 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.
581			_a5
773	0		_tJournal of Canadian Petroleum Technology _g50
942			_cARTICULO
100	1		_aOrtiz-Arango, Julian D. _951492
100	1		_aKantzas, Apostolos _951456
999			_c185451 _d185451