000			02199nab a2200205 4500
005			20260520001751.0
008			260224s2009 xxu
245	0	0	_aAnalysis of the convective dispersive transport in porous media
260			_a _b _cmayo 2009
270			_a08/06/2010 ; 07/06/2010
300			_a8 p. ; 15-23
520			_aTranscripción del resumen del autor. The finite-control volume technique is used to solve the convection–dispersion equation in cylindrical coordinates. In the model presented, the dispersion coefficient is dependent on both velocity and diffusion coefficient. The solution allows analyzing the dispersion transport of a slug in a steady radial flow from an injection well fully penetrating a homogeneous reservoir of uniform thickness and finite drainage area. The solution is used to study the effects of a number of parameters, like dispersivity, tortuosity, porosity, and injection rate on the mixing process. For the range of parameters investigated, and for the homogeneous porous medium simulated, the optimal solvent slug size appears to slightly vary around the vicinity of 0.1 pore volume, for an arbitrary position taken at a dimensionless radius rD = 0.5. The optimal solvent slug size appears to slightly increase with increasing porosity and dispersivity, and to decrease with increasing tortuosity. The finite-volume technique is favored over the finite-difference technique because it is known to eliminate the detrimental effects of numerical dispersion. The convection–dispersion equation arises in the simulation of miscible displacement processes where front smearing resulting from numerical dispersion can distort the behavior of the displacement process. This front smearing can, for instance, lead to false predictions of breakthrough times and optimal slug sizes. This in return causes poor reservoir management and inadequate economic forecast of EOR processes.
581			_a1-2
773	0		_tJournal of Petroleum Science & Engineering _g66
942			_cARTICULO
100	1		_aAl-Dousari, Mabkhout M. _942194
100	1		_aGarrouch, Ali A. _912304
100	1		_aGuedouar, Lotfi H. _942195
999			_c170750 _d170750