Stability Mechanism of Nitrogen Foam in Porous Media with Silica Nanoparticles Modified by Cationic Surfactants

Wu, Yining; Fang, Sisi; Zhang, Kaiyi; Zhao, Mingwei; Jiao, Baolei; Dai, Caili

doi:10.1021/acs.langmuir.8b01187

Cited by 40 publications

(10 citation statements)

References 45 publications

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“…When CTAB molecules and SNPs were added to aqueous phase simultaneously, the adsorption of CTAB molecules on SNP surface 19 endowed the SNPs with surface activity. Hence, these decorated SNPs are able to anchor and assemble at bubble surface (Figure 2a).…”

Section: Industrial and Engineering Chemistry Researchmentioning

confidence: 99%

Precisely Tailoring Bubble Morphology in Microchannel by Nanoparticles Self-assembly

Wang

Dai

et al. 2019

Ind. Eng. Chem. Res.

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Precisely tailoring bubble morphology is always a long-standing great challenge. In this work, a facile and scalable method to generate nonspherical bubbles with long-term stability is proposed. Taking advantage of the electrostatic interaction between silica nanoparticles (SNPs) and cationic surfactants, the SNPs are decorated with surfactants and endowed with interfacial activity. Due to the rearrangement of surfactants, the decorated SNPs transform to a kind of Janus particles at the gas−liquid interface. By precisely manipulating the surface activity, packing density, and jamming of Janus SNPs at the bubble surface, four different shapes such as oblaten-like, bullet-like, tadpole-like, and worm-like bubble were obtained continuously in the microchannel. Herein, our method to generate bubbles with a prescribed shape poses opportunities for gas microreactor, cavity material, gas storage, and provide a platform to study the applicable scope of the Young−Laplace equation.

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Section: Industrial and Engineering Chemistry Researchmentioning

confidence: 99%

Precisely Tailoring Bubble Morphology in Microchannel by Nanoparticles Self-assembly

Wang

Dai

et al. 2019

Ind. Eng. Chem. Res.

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“…synthesized a new type of foam fracturing uid with acrylamide and cetyltrimethylallyl ammonium chloride, which improved the stability of the foam due to the association structure. Wu [12] et al studied the effect of electrostatic interaction between cationic surfactants and silica nanoparticles (NPs) on foam stability in porous media, and found that NPs and surfactants greatly improved foam stability.…”

Section: Introductionmentioning

confidence: 99%

Molecular Viewpoint for the Stability Mechanism of SiO2/SDS Dispersion

Liu

Chen

et al. 2022

Preprint

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The dispersion of silica dioxide (SiO2)/sodium lauryl sulfate (SDS) have been widely used in the oilfield development and the remaining oil displacement, but its instability is still a problem in the practical engineering application. In this paper, the mechanism of foam stability was investigated by combining the measurement of interfacial energy of nanoparticles at the gas-liquid interface with the dynamics simulation of molecular diffusion. The results showed that the addition of SiO2 nanoparticles improved the interfacial energy and interfacial activity at the gas-liquid interface, meanwhile limited the movement of SDS molecules and water molecules, which was beneficial for the foam stability. Notably, the addition of modified SiO2 nanoparticles further enhanced the interfacial energy at the gas-liquid interface and strengthened the restriction of water/SDS molecular movement, thereby slowing down the drainage and decay of the foam dispersions. The mechanism investigation was of benefit for foam flooding engineering application.

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“…Despite the advantages of foams, a major issue for this technology is the foam stability in deep reservoirs (with high temperature and pressure) especially when crude oil is present since quite a few reports have observed the detrimental effect of hydrocarbons on foam stability. − Furthermore, surfactants are prone to detach from the bubble surface when foams are subjected to high-temperature and salinity. − As reported, the foam stability is heavily dependent on bulk and surface viscosities, micelle concentration, disjoining pressure, hydrophobic interactions, surface tension (equilibrium and dynamic), and surfactant adsorption at the air/water interface. On the basis of these mechanisms, substantial efforts have been made in the past decades aiming to boost foam stability and extend foam longevity in reservoirs.…”

Section: Introductionmentioning

confidence: 99%

“…), − as illustrated in Figure . Through adsorption and aggregation in foam films, NPs can increase film thickness and dilational viscoelasticity, which consequently decelerates liquid drainage and film thinning. ,, In addition, the capability of the interface to bear in-plane shear has been recently demonstrated as a key factor in stabilizing droplets . As for polymers, the predominant stabilizing mechanism is to significantly increase the bulk fluid viscosity of the foaming solution.…”

Section: Introductionmentioning

confidence: 99%

Design of Nanocellulose Fibrils Containing Lignin Segment (L-NCF) for Producing Stable Liquid Foams as “Green” Flooding Agents for Oil Recovery

Wei

Wang

Mao

et al. 2019

ACS Sustainable Chem. Eng.

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Foam stability is a crucial consideration in the view of its numerous applications. Herein, a series of nanocellulose fibrils containing lignin segment (L-NCF) was designed and then utilized for interfacial stabilization of liquid foams for eco-friendly oil recovery applications. The ability to form foams and their stability at bulk scale and bubble scale were thoroughly investigated using a foam scanner. Liquid drainage rate, bubble rupture, interfacial dilational viscoelasticity, and bubble transport in porous media were studied as a function of lignin content. We observed that in a vertical column the addition of L-NCF significantly mitigated the drainage of the liquid foams. The foam volume stability (FVS) index indicated that the stability of the foams in the presence of L-NCF was up to five times higher than that of surfactant-only foam. The hydrophobic interaction between the surfactant (mixture of alkyl polyglycoside (APG) and anion surfactant alpha olefin sulfonate (AOS)) and L-NCF (lignin segment) constructed an elastic interface for the foams, which notably protected the liquid foams from coarsening and coalescence. The L-NCF stabilized foams can appropriately transport in porous media without the plugging issue, during which great differential pressures are simultaneously built up as a result of the yielded elastic interface. It is believed that nanocellulose is very promising in the oil production industry as a green alterative to synthetic chemicals.

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Stability Mechanism of Nitrogen Foam in Porous Media with Silica Nanoparticles Modified by Cationic Surfactants

Cited by 40 publications

References 45 publications

Precisely Tailoring Bubble Morphology in Microchannel by Nanoparticles Self-assembly

Precisely Tailoring Bubble Morphology in Microchannel by Nanoparticles Self-assembly

Molecular Viewpoint for the Stability Mechanism of SiO2/SDS Dispersion

Design of Nanocellulose Fibrils Containing Lignin Segment (L-NCF) for Producing Stable Liquid Foams as “Green” Flooding Agents for Oil Recovery

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