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Capillary Effects and Multiphase Flow in Porous Media

卷 1, 册 1, 1998, pp. 1-29
DOI: 10.1615/JPorMedia.v1.i1.20
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摘要

Against a background of the topologies of the immiscible fluids in porous media, a few recent advances in multiphase flow involving capillarity have been briefly reviewed. 1) Measurement and interpretation of hydrodynamic coupling in cocurrent two-phase flow: In steady flow, in the absence of a saturation gradient, coupling of a purely kinematic character can exist in low permeability media at low wetting fluid saturations when the wetting phase, of a lower viscosity than the nonwetting phase, is continuous only on the pore walls in the form of thick films. As a result of this lubricating effect, the flow of the nonwetting phase is increased, whereas the flow of the wetting phase is unaffected. In the presence of a saturation gradient, however, significant viscous coupling between two fluids of the same viscosity has been measured in experiments in a sand pack where the pressure gradient in one of the two fluids was kept zero, while the other fluid was pumped at a constant rate. 2) General representation of the evolution of saturation profiles in waterfloods in different porous media in terms of two scaling parameters: The viscosity ratio and the ratio of viscous-to-capillary forces CA = Q/Q0 (Q is the constant injection rate of water in the water flood and Q0 is the rate of spontaneous imbibition of water into the same system at zero time). 3) Imbibition of blobs of nonspreading oil (negative spreading coefficient) in film form over thick water films present in the edges and/or grooves of pore walls: Oil blobs that are surrounded by water and trapped by capillary forces spread, after draining the bulk of the water, on the surface of the remaining thick water films (i) if the spreading coefficient is positive by the known laws of spreading and (ii) by capillary forces if the spreading coefficient is negative. The conditions controlling the second kind of spreading (ii) have been quantified by using classical Gibbs-free energy treatment and the predictions have been verified by experiment.

对本文的引用
  1. Ceballos-Ruano J. S., Kupka T., Nicoll D. W., Benson J. W., Ioannidis M. A., Hansson C., Pintar M. M., Nuclear magnetic resonance monitoring of capillary imbibition and diffusion of water into hardened white cement paste, Journal of Applied Physics, 91, 10, 2002. Crossref

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  3. Bachmann Olivier, Bergantz George W., Gas percolation in upper-crustal silicic crystal mushes as a mechanism for upward heat advection and rejuvenation of near-solidus magma bodies, Journal of Volcanology and Geothermal Research, 149, 1-2, 2006. Crossref

  4. Gao Zhiye, Hu Qinhong, Initial water saturation and imbibition fluid affect spontaneous imbibition into Barnett shale samples, Journal of Natural Gas Science and Engineering, 34, 2016. Crossref

  5. Gassita Serge, Marmoret Laurent, Perwuelz Anne, Beji Hassen, Infiltration Kinetics of Wetting in a Building Plaster and the Effect of Added Glass and Hemp Fibers, ISRN Civil Engineering, 2013, 2013. Crossref

  6. Cai Jianchao, Chen Yin, Liu Yang, Li Shuang, Sun Chenhao, Capillary imbibition and flow of wetting liquid in irregular capillaries: A 100-year review, Advances in Colloid and Interface Science, 304, 2022. Crossref

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