Measurement of Foaminess

Bikerman, J. J.

doi:10.1007/978-3-642-86734-7_3

Cited by 24 publications

(8 citation statements)

References 50 publications

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“…Foaming experiments. Bikerman columns constituted by a glass column of diameter 2 cm with a porous glass filter at the bottom (Robu, porosity: 10-16 µm), were used to form foams and measure their lifetimes 10 . The column was filled with the binary mixture up to a height of 10 cm.…”

Section: Methodsmentioning

confidence: 99%

Foaming of Binary Mixtures: Link with the Nonlinear Behavior of Surface Tension in Asymmetric Mixtures

et al. 2021

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The lifetimes of single bubbles or foams that are formed in mixtures of liquids can be several orders of magnitude larger than the ones formed in pure liquids. We recently demonstrated that this enhanced stability results from differences between bulk and interfacial concentrations in the mixture, which induce a thickness dependence of the surface tension in liquid films, and thus a stabilizing Marangoni effect. Concentration differences may be associated with nonlinear variations of surface tension with composition and we further investigate their link with foamability of binary mixtures. We show that, for asymmetric binary mixtures, that is, made of molecules of very different sizes, strong nonlinearities in surface tension can be measured, that are associated with large foam lifetimes. When the molecules that occupy the largest surface areas have the smallest surface tension, the surface tension of the mixture varies sublinearly with composition, reflecting an enrichment in this species at the interface with air, as classically reported in the literature. In contrast, when they exhibit the largest surface tension, superlinear variations of surface tension are observed, despite a similar enrichment. We discuss these variations in light of a simple thermodynamic model for ideal mixtures and we demonstrate why foam stability is enhanced for both sublinear and superlinear surface tension variations, thus, shedding new light on foamability without added surfactants.

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Section: Methodsmentioning

confidence: 99%

Foaming of Binary Mixtures: Link with the Nonlinear Behavior of Surface Tension in Asymmetric Mixtures

et al. 2021

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“…Foaming experiments were performed with Bikerman columns [18,19], i.e. glass columns of radius 1 and height 30 with a porous filter at their bottom (Robu, porosity: 10 16 µ ).…”

Section: Fig 1: Surface Tensions Of Decane/toluene (Red) and Octane/mentioning

confidence: 99%

Understanding Frothing of Liquid Mixtures: A Surfactantlike Effect at the Origin of Enhanced Liquid Film Lifetimes

et al. 2020

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“…Since then, there have been several successful foam pilot tests in which surfactant and gases have been coinjected for mobility control . In bulk, foam is defined as a dispersion of gas bubbles in liquid; the bubble size is much smaller than the size of the container . The foam morphology in porous media is quite different than in the bulk; the bubble size is close to the size of pores.…”

Section: Introductionmentioning

confidence: 99%

“…10 In bulk, foam is defined as a dispersion of gas bubbles in liquid; the bubble size is much smaller than the size of the container. 11 The foam morphology in porous media is quite different than in the bulk; the bubble size is close to the size of pores. In porous media, foam is a two-phase fluid system where some gas flow paths are made discontinuous by thin liquid films called lamellas.…”

Section: ■ Introductionmentioning

confidence: 99%

Synergy between Nanoparticles and Surfactants in Stabilizing Foams for Oil Recovery

2015

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Surfactant stabilized foams have been used in the past for vertical conformance and mobility control in gas enhanced oil recovery processes. Lack of stability of these foams often limits their application. The goal of this study is to investigate the synergistic effects of using a blend of silica nanoparticles (NP) and anionic surfactants on foam stability in both bulk and porous media. First, stability of static foams were studied using surfactants and surfactant-NP mixtures with and without the presence of a crude oil. Second, the foam drainage behavior and thickness of the foam lamella were studied by fluorescence microscopy. Third, mobility of foams were measured by co-injecting the surfactant or surfactant-NP solutions with nitrogen gas through a Berea sandstone core at a fixed foam quality (gas volume fraction). Finally, oil displacement experiments were conducted in Berea cores using these foams. Static foam tests indicate stabilization effect of nanoparticles on surfactant-nanoparticle stabilized foam in the absence of crude oil. Adding nanoparticles in low concentrations (0.3 wt%) improves the foam stability and increases the mobility reduction factor by a factor of two in the absence of oil. Fluorescence and confocal laser scanning microscopy elucidate the trapping of nanoparticles in plateau borders as well as lamellas which retards liquid drainage and bubble coalescence. The core floods with a reservoir crude oil show about 10% incremental oil recovery by an immiscible foam (with the surfactant-NP blend) over water flood. This study shows that nanoparticles have the potential to increase the stability of surfactant-stabilized foams in subsurface applications.

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Measurement of Foaminess

Cited by 24 publications

References 50 publications

Foaming of Binary Mixtures: Link with the Nonlinear Behavior of Surface Tension in Asymmetric Mixtures

Foaming of Binary Mixtures: Link with the Nonlinear Behavior of Surface Tension in Asymmetric Mixtures

Understanding Frothing of Liquid Mixtures: A Surfactantlike Effect at the Origin of Enhanced Liquid Film Lifetimes

Synergy between Nanoparticles and Surfactants in Stabilizing Foams for Oil Recovery

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