Capillarity-induced resonance of blobs in porous media: Analytical solutions, Lattice–Boltzmann modeling, and blob mobilization

Influence of geometry on mobilization of trapped blob

“…The simulations were carried out on similar lines done by Hilpert (2007); Randive and Dalal (2013). Figure 1 2 shows the simulated blob after acoustic excitation.…”

“…In particular, the displacement of a viscous liquid by a gaseous phase is complex to understand and is explored extensively (Washburn (1921); Cox (1962); Reinelt and Saffman (1985); Govier and Aziz (1972); Ouyang and Aziz (2000)). The complexity in understanding the physics of liquid displacement is attributed to the fact that it is a function of several physicochemical properties which include wettability of the surface, capillary number and capillarity induced resonance (Hilpert (2007)). Besides this, the nature of the geometry (Bear (1972); Chaudhary et al (2013)) determines intra-pore fluid flow behavior.…”

“…They discussed the behavior of the three-phase contact lines which could remain pinned to the heterogeneities of the solid surface or slide if acoustic waves are applied. Hilpert This is important in mobilization of the blobs since the multiply connected and varying pore space offers more opportunites for the blob to be trapped than the uniform shaped pore channels (Hilpert (2007)). …”

Wave Velocity Dispersion and Attenuation in Media Exhibiting Internal Oscillations

“…The restoring force driving the oscillations is the surface tension force or capillary force. The fact that isolated oil blobs in residually saturated pore spaces can exhibit a resonance frequency, motivated the suggestion of a new enhanced oil recovery method (EOR) termed "wave stimulation of oil" or "vibratory mobilization" (Beresnev & Johnson, 1994;Iassonov & Beresnev, 2003;Beresnev et al, 2005;Li et al, 2005;Hilpert, 2007;Pride et al, 2008). Another example of oscillatory behavior within a medium is given by Urquizu and Correig (2004).…”

Effects of Pressure Oscillations on Drainage in an Elastic Porous Medium

“…The research has been developing in both experimental (Roberts et al 2001;Li et al 2005) and theoretical directions (Hilpert et al 2000;Iassonov and Beresnev 2003;Hilpert 2007;Pride et al 2008).…”