Effect of particle hydrophobicity on CO2 foam generation and foam flow behavior in porous media

Yu, Jianjia; Khalil, Munawar; Liu, Ning; Lee, Robert

doi:10.1016/j.fuel.2014.02.053

Cited by 86 publications

(39 citation statements)

References 13 publications

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“…Nanoparticles are adopted to increase foam stability recently in food industry [8], forth flotation [9], EOR [6,10]. Unlike surfactant molecules, the adsorption of nanoparticles at the air-liquid interface is normally irreversible.…”

Section: Introductionmentioning

confidence: 99%

“…The SDS molecules adsorbed on the surface of silica nanoparticle and formed a supercharged system. In oilfield, nanoparticle-stabilized foams have also attracted researchers' attention recently [10]. In the previous work [6], we evaluated the nanoparticle-stabilized foam stability and effectiveness in enhanced oil recovery at pore scale and micromodel scale.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Aqueous foam stabilized by partially hydrophobic nanoparticles in the presence of surfactant

Sun

Wang

et al. 2015

Colloids and Surfaces A: Physicochemical and Engineering Aspect

175

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Aqueous foam stabilized by partially hydrophobic nanoparticles in the presence of surfactant

Sun

Wang

et al. 2015

Colloids and Surfaces A: Physicochemical and Engineering Aspect

175

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“…Two pressure transducers (PX309, Omega, Norwalk, CT, USA) were attached at two locations of the tube separated by 41 cm. The viscosity (η) was calculated by dividing the shear stress τ with the shear rate γ [19,28,40,43,44]: The shear stress τ is determined by the shear force F and the area A parallel to the applied force vector:…”

Section: Viscosity Measurement and Calculationmentioning

confidence: 99%

Hydraulic Properties of Porous Media Saturated with Nanoparticle-Stabilized Air-Water Foam

Zheng

Jang

2016

Sustainability

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Abstract:The foam generated by the mixture of air and water has a much higher viscosity and lower mobility than those of pure water or gas that constitutes the air-water foam. The possibility of using the air-water foam as a flow barrier for the purpose of groundwater and soil remediation is explored in this paper. A nanoparticle-stabilized air-water foam was fabricated by vigorously stirring the nano-fluid in pressurized condition. The foam bubble size distribution was analyzed with a microscope. The viscosities of foams generated with the solutions with several nanoparticle concentrations were measured as a function of time. The breakthrough pressure of foam-saturated microfluidic chips and sand columns were obtained. The hydraulic conductivity of a foam-filled sand column was measured after foam breakthrough. The results show that: (1) bubble coalescence and the Ostwald ripening are believed to be the reason of bubble size distribution change; (2) the viscosity of nanoparticle-stabilized foam and the breakthrough pressures decreased with time once the foam was generated; (3) the hydraulic conductivity of the foam-filled sand column was almost two orders of magnitude lower than that of a water-saturated sand column even after the foam-breakthrough. Based on the results in this study, the nanoparticle-stabilized air-water foam could be injected into contaminated soils to generate vertical barriers for temporary hydraulic conductivity reduction.

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“…The adsorption of nanoparticle on the bubble surface was confirmed by laser-induced confocal fluorescence microscopy. Yu et al 29 investigated the particle hydrophobicity on CO 2 foam generation in porous media at reservoir condition. The dilational viscoelasticity increased with increasing SiO 2 concentration, corresponding with foam stability.…”

mentioning

confidence: 99%

“…23 Lumsdon et al 24 found that the stability of emulsion produced by silica could be enhanced by adjusting the extent of particle flocculation with electrolytes (such as NaCl). Yu et al 29 investigated the particle hydrophobicity on CO 2 foam generation in porous media at reservoir condition. Rodrigues et al 25 proposed that the adsorption of proper surfactant molecules onto particle surface enabled particle adsorption at oil/water interface.…”

mentioning

confidence: 99%

Properties of multi-phase foam and its flow behavior in porous media

Sun

Wang

et al. 2015

RSC Adv.

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Aqueous foams were produced with partially hydrophobic SiO 2 nanoparticles and sodium dodecyl sulfate (SDS) dispersions. The injection behavior of SiO 2 stabilized foam (SiO 2 /SDS foam) was analyzed and compared with SDS stabilized foam (SDS foam). The experimental results showed that the SiO 2 nanoparticles and SDS surfactants had a synergistic effect on foam stability at proper SDS concentration. And the effect was although with a slight decrease of foam volume. The adsorption of nanoparticle on the bubble surface was confirmed by laser-induced confocal fluorescence microscopy. And the effect of absorbed nanoparticles on bubble surface viscoelasticity was also verified by the interfacial dilational rheological measurement. The dilational viscoelasticity increased with increasing SiO 2 concentration, corresponding with foam stability. The plugging flow experiment demonstrated that the maximum differential pressure in SiO 2 /SDS foam flooding was 1.9 MPa, much higher than that in SDS foam flooding. The SiO 2 /SDS foam had better diversion property and resistance to water flushing than SDS foam. In the oil displacement experiments, SiO 2 /SDS foam could reduce the residual oil saturation noticeably. The enhanced oil recovery and the final oil recovery could reach to 41.2% and 75.7%, respectively. It was deduced that the enhanced foam stability and dilational viscoelasticity were the main reasons for the effective performance in porous media. magnitude greater than that of either gas or liquid, so the foam fluids can inhibit viscous fingering and thus increase the oil recovery. Especially in heterogeneous formation, which contains layers of different permeabilities, foam can block the high-permeability layer first, and then divert subsequent fluid into the low-permeability layer.Bubble is unstable thermodynamically in nature, especially in porous media under formation condition. Thus, how to increase foam stability is the prerequisite for better application in oil field. Foam stabilized by nanoparticles has attracted special attentions recently in food-making process, 14 flotation, 15 and water borne coatings. 16 Like surfactant molecules, nanoparticles with proper surface amphiphilicity could adsorb at air/liquid interface and enhance the foam stability. The adsorption of nanoparticles is usually irreversible and its adsorption energy determines the foam stability. 17 Furthermore, the adsorbed nanoparticles at air/water interface resist the water flow on liquid film and separate the dispersed phase, and thus slow down the liquid film thinning and bubble shrinkage. [18][19][20][21] Previous studies indicated that the dilational viscoelasticity of particle-coated bubble surface was another key parameter of foam stabilization. 22 The dilational property is usually used to characterize the physical process in the dispersion surface layer and provides useful information about the adsorption of nanoparticles at the air/water interface. The enhanced viscoelasticity gave the resistance ability of bubble film to dilationa...

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Effect of particle hydrophobicity on CO2 foam generation and foam flow behavior in porous media

Cited by 86 publications

References 13 publications

Aqueous foam stabilized by partially hydrophobic nanoparticles in the presence of surfactant

Aqueous foam stabilized by partially hydrophobic nanoparticles in the presence of surfactant

Hydraulic Properties of Porous Media Saturated with Nanoparticle-Stabilized Air-Water Foam

Properties of multi-phase foam and its flow behavior in porous media

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