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Analysis of Capillary-Viscous-Gravity Forces in Biopolymer Flooding with a Sensitivity Analysis on Polymer and Porous Medium Parameters
, Article Journal of Dispersion Science and Technology ; Vol. 35, issue. 12 , Aug , 2014 , p. 1764-1773 ; Mirzaei-Paiaman, A ; Ramazani, S. A. A ; Hatami, A ; Sharif University of Technology
Abstract
Gravity, viscous, and capillary are three main forces affecting flow characteristics in porous media. No analytical solution can be found to model the flow by considering all these forces. In this work, by considering all these forces, the polymer-flooding process is modeled by using a numerical simulation approach. For characterizing the polymer, the modified Blake-Kozeny model is chosen, which benefits consideration of the permeability reduction due to polymer adsorption on the rock surface
Experimental study of some important factors on nonwetting phase recovery by cocurrent spontaneous imbibition
, Article Journal of Natural Gas Science and Engineering ; 2015 ; 18755100 (ISSN) ; Mirzaei Paiaman, A ; Masihi, M ; Harimi, B ; Sharif University of Technology
Elsevier
2015
Abstract
Spontaneous imbibition, defined as the displacement of nonwetting phase by wetting phase in porous media by action of capillary forces, is important in many applications within earth sciences and in particular in naturally fractured oil and gas reservoirs. Hence, it is critical to investigate the various aspects of this process to correctly model the fractured reservoir behavior. In this study, twenty four experiments were conducted to study the effect of rock properties, lithology of porous medium, brine viscosity and boundary conditions on displacement rate and final recovery by cocurrent spontaneous imbibition (COCSI) in brine-oil systems. The results can be extended to brine-gas systems,...
Experimental study of dynamic imbibition during water flooding of naturally fractured reservoirs
, Article Journal of Petroleum Science and Engineering ; Volume 174 , 2019 , Pages 1-13 ; 09204105 (ISSN) ; Masihi, M ; Mirzaei Paiaman, A ; Hamidpour, E ; Sharif University of Technology
Elsevier B.V
2019
Abstract
Capillary imbibition is an important recovery mechanism in naturally fractured reservoirs when water-filled fractures surround water-wet matrix blocks. A large amount of studies of imbibition process is simply total or partial immersion of nonwetting phase saturated rock in aqueous wetting phase. However, water advance in fractures during water flooding or water encroachment from an active aquifer introduces time dependent boundary conditions where invariant exposure of rock surface to water is not representative. In this work, a laboratory simulated matrix-fracture system was used to investigate different aspects of imbibition in the presence of fracture fluid flow (namely dynamic...