Dynamic immiscible displacement mechanisms in pore doublets: Theory versus experiment

Chatzis, Ioannis; Dullien, F. A. L.

doi:10.1016/0021-9797(83)90326-0

Cited by 169 publications

(118 citation statements)

References 4 publications

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“…Another possible explanation for this different type of displacement could be the different type of glass used for the fabrication of the micromodel. The trapping of the wetting phase in a drainage type displacement has also been previously mentioned by Lenormand et al (1983);Chatzis and Dullien (1983) and Jamaloei et al (2010b). The interfaces shapes depicted in Fig.…”

Section: Glycerol/water Mixturementioning

confidence: 69%

“…In both spontaneous imbibition and drainage the driving force of the displacement is the capillary pressure with the difference that in the former case a (more) wetting fluid displaces a non-wetting one and in the latter case a nonwetting phase displaces a wetting phase. Even though a high number of studies involving capillary-driven displacements within micromodels can be found in the literature, to date, the only other studies known to the authors that describe spontaneous (free) imbibition/drainage visual observations within micromodels are the ones of Chatzis and Dullien (1983) and Jamaloei et al (2010a,b). We are unaware of any experimental work in which the dissolution dynamics of miscible binary systems saturating micromodels has been studied.…”

Section: Introductionmentioning

confidence: 99%

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Dissolution Dynamics of Liquid/Liquid Binary Mixtures Within a Micromodel

Stevar

Vorobev

2013

Transp Porous Med

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We report optical observations of the dissolution behaviour of glycerol/water, soybean oil/hexane, and isobutyric acid (IBA)/water binary mixtures within a glass micromodel built as a 2D regular network of capillary tubes with diameter of 0.2 mm. The micromodel is initially filled with solute and then is horizontally immersed into a thermostatic solvent-filled bath. The micromodel is open at its corners for solute dissolution to occur with no pressure gradients being applied. Our study shows that the solvent penetration into the micromodel is diffusion-dominated in completely miscible binary mixtures (glycerol/water and soybean oil/hexane). This is, however, non-Fickian diffusion with the dissolution rate, dV /dt, being proportional to D 1/3 t −0.4 for almost the entire duration of the experiment (V is the volume occupied by the solvent, D is the diffusion coefficient, and t is time). For the partially miscible IBA/water mixture the experiments performed at undercritical temperatures revealed that the diffusive transport was negligible despite the mixture being out of its thermodynamic equilibrium. The water phase penetrated into some of the channels, but IBA was never completely displaced/dissolved from the micromodel and numerous interfaces remained visible after very long-time periods.

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Section: Glycerol/water Mixturementioning

confidence: 69%

Section: Introductionmentioning

confidence: 99%

Dissolution Dynamics of Liquid/Liquid Binary Mixtures Within a Micromodel

Stevar

Vorobev

2013

Transp Porous Med

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“…Laboratory experiments have shown that during the watering process, the air phase can lose its continuity and that air can get trapped in porous media (Smiles et al 1971;Chatzis and Dullien 1983). In our current study the sudden change in the water table perhaps trapped many air bubbles in the sand layers during the water-recovery period (5619 -5774 minutes).…”

Section: Abnormal Eri Signals During the Stoppage And The Continuous-mentioning

confidence: 99%

Using the Resistivity Imaging Method to Monitor the Dynamic Effects on the Vadose Zone During Pumping Tests at the Pengtsuo Site in Pingtung, Taiwan

Chang¹,

Hsu²,

Chang³

et al. 2016

Terr. Atmos. Ocean. Sci.

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We conducted a time-lapse monitoring study during a well-pumping test at the Pengtsuo site in Pingtung, Taiwan. Water-level gauges were installed in four wells (P1, W1, O1, and O2) at the Pengtsuo site with different screen depths for the observation. We designed the pumping test to be executed in three phases: the background, the stepwise-pumping, and the continuous-pumping phases. The survey line crossed the four wells so that a comparison would be possible between the resistivity measurements and the water-level records. The resistivity differences relative to the pre-pumping background show that electrical resistivity imaging (ERI) can resolve changes due to dewatering from pumping activity. The time-lapse resistivity images reveal that the maximum resistivity increase took place at the locations in the vadose zone instead of at the groundwater surface. The variation in the resistivity differences in the vadose zone correlated to the change in groundwater level in the stepwise phase. On the other hand, the resistivity-difference change was not fully consistent with the groundwater-level change in the continuous-pumping phase. We attribute the abnormal ERI signals to the dynamic non-equilibrium of the water movement in the vadose zone. The findings suggest that pumping designs can affect the changing resistivity differences and water-content distribution patterns. We show the potential of the ER method to reveal both the water flow and water-content changes in the vadose zone with different transient boundary conditions.

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“…This phenomenon which is supported by the thermal diffusion driving force could be seen in two successive pictures demonstrated as Figures 8 and 9. Mobilized oil is drained out of these pores and steam invades through them following the sequential behaviour of pore drainage during an immiscible displacement process [32]. During the early stages of steam chamber lateral displacement, the chamber could be defined by the continuum of gas invaded pores which is dendritic in nature.…”

Section: Pore-scale Events Analysis: Steam Chamber Early Development mentioning

confidence: 99%

“…limited distance of 1-5 pores) the mobilized region by direct drainage displacement applied by the invading steam phase according to the typical sequential drainage displacement of a wetting phase using a non-wetting phase at the pore scale [32]. Meanwhile, this direct drainage displacement would be facilitated with the aid of gravitational force in the absence of excessive viscous forces.…”

Section: Capillary Drainage Displacement Mechanismmentioning

confidence: 99%