Theory of vibratory mobilization on nonwetting fluids entrapped in pore constrictions

Beresnev, Igor A.

doi:10.1190/1.2353803

Cited by 70 publications

(62 citation statements)

References 15 publications

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“…[14] Dislodging particles and bubbles by fluid flow induced by time-varying stresses are mechanisms that depend on the frequency of deformation [e.g., Beresnev, 2006]. The pressure gradients created by inhomogeneous poroelastic properties will be proportional to strain amplitude.…”

Section: Discussionmentioning

confidence: 99%

“…The mechanism or mechanisms responsible for mud volcano responses remain uncertain. Possible explanations include an increase in permeability or fluid mobility resulting from the mobilization of trapped colloidal particles [e.g., Roberts and Abdel-Fattah, 2009] or bubbles [e.g., Beresnev, 2006] by the time-varying flows produced by the passage of seismic waves.…”

Section: Introductionmentioning

confidence: 99%

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Frequency dependence of mud volcano response to earthquakes

Rudolph

Manga

2012

Geophysical Research Letters

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[1] Distant earthquakes can trigger the eruption of mud volcanoes. We document the response of the Davis-Schrimpf mud volcanoes, California, to two earthquakes and nonresponse to four additional events. We show that the DavisSchrimpf mud volcanoes are more sensitive to long period seismic waves than to shorter period waves of the same amplitude. Our observations are consistent with models for dislodging bubbles and particles by time varying flows produced by seismic waves. Mobilizing trapped bubbles or particles increases permeability or fluid mobility, increasing discharge. Citation: Rudolph, M. L., and M. Manga (2012), Frequency dependence of mud volcano response to earthquakes,

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Frequency dependence of mud volcano response to earthquakes

Rudolph

Manga

2012

Geophysical Research Letters

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“…For example, recent interest in using acoustic waves to enhance oil recovery has stimulated a significant amount of work on the interaction of acoustic waves with non-wetting oil blobs in porous media [127,128]. It has been found that acoustic waves may induce capillary resonance of the blobs and the size of the blob (L) can be related to the resonant frequency (ω) by [127]:…”

Section: Model Analysis: First Order Approximationmentioning

confidence: 99%

Fundamental study of CO2-H2O-mineral interactions for carbon sequestration, with emphasis on the nature of the supercritical fluid-mineral interface.

Bryan¹,

Dewers²,

Heath³

et al. 2013

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In the supercritical CO 2 -water-mineral systems relevant to subsurface CO 2 sequestration, interfacial processes at the supercritical fluid-mineral interface will strongly affect core-and reservoir-scale hydrologic properties. Experimental and theoretical studies have shown that water films will form on mineral surfaces in supercritical CO 2 , but will be thinner than those that form in vadose zone environments at any given matric potential. The theoretical model presented here allows assessment of water saturation as a function of matric potential, a critical step for evaluating relative permeabilities the CO 2 sequestration environment. The experimental water adsorption studies, using Quartz Crystal Microbalance and Fourier Transform Infrared Spectroscopy methods, confirm the major conclusions of the adsorption/condensation model. Additional data provided by the FTIR study is that CO 2 intercalation into clays, if it occurs, does not involve carbonate or bicarbonate formation, or significant restriction of CO 2 mobility.We have shown that the water film that forms in supercritical CO 2 is reactive with common rock-forming minerals, including albite, orthoclase, labradorite, and muscovite. The experimental data indicate that reactivity is a function of water film thickness; at an activity of water of 0.9, the greatest extent of reaction in scCO 2 occurred in areas (step edges, surface pits) where capillary condensation thickened the water films. This suggests that dissolution/precipitation reactions may occur preferentially in small pores and pore throats, where it may have a disproportionately large effect on rock hydrologic properties.Finally, a theoretical model is presented here that describes the formation and movement of CO 2 ganglia in porous media, allowing assessment of the effect of pore size and structural heterogeneity on capillary trapping efficiency. The model results also suggest possible engineering approaches for optimizing trapping capacity and for monitoring ganglion formation in the subsurface. 6 ACKNOWLEDGMENTS

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“…From subsequent experiments (Li et al (2005);Beresnev et al (2011)) and numerical simulations at pore scales (Beresnev (2006); Beresnev and Deng (2010); Deng and Cardenas (2013)), they concluded that the acceleration of the rock matrix should be in the order of 0.1 to 10m/s 2 , or more, to induce oil mobilization. They further showed that such a threshold acceleration level varies depending on a number of parameters: a) the average size of the pore space; b) the background pressure gradient; c) the wave frequency; d) the viscosity of the remaining oil; and e) the capillary pressure.…”

Section: Introductionmentioning

confidence: 94%

“…It has also been suggested that the movement of the pore walls could also mobilize oil droplets trapped in pore spaces (Averbakh et al (2000); Beckham et al (2010); Beresnev and Johnson (1994); Beresnev (2006); Hilpert et al (2000)). That is, the vibration of pore walls can dislodge the trapped droplets and coalesce them into larger ones, allowing them to be mobilized and flow, as illustrated in Figure 2.…”

Section: Introductionmentioning

confidence: 97%