Anionic-nonionic and nonionic mixed surfactant systems for oil displacement: Impact of ethoxylate chain lengths on the synergistic effect

Wang, Zizhao; Dai, Caili; Liu, Jiawei; Dong, Yunbo; Liu, Jinming; Sun, Ning; Li, Lin

doi:10.1016/j.colsurfa.2023.132436

Cited by 7 publications

(2 citation statements)

References 39 publications

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“…In this study, the detailed interactions between surfaces with wettability ranging between hydrophilic, partially hydrophobic, and hydrophobic surfaces are investigated by the SFA technique. OTS was chosen as the hydrophobizing agent due to the wide application of alkane in solid surface hydrophobilization [17], emulsion stabilization [18,19], and its existence in membrane lipids [20]. By using the solution deposition method in ethanol, the deposition density of OTS on mica was modulated by controlling the deposition time.…”

Section: Introductionmentioning

confidence: 99%

Probing the nanomechanics of interfacial interactions between hydrophobic surfaces

Lu,

Wang,

Wang

et al. 2024

Front. Phys.

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Hydrophobic interactions are widely applied in diverse fields, yet the effect of the degree of hydrophobicity on the interactions between hydrophobic surfaces is still unaddressed, limiting the development of functional hydrophobic surfaces. In this study, the interfacial interactions and configuration of hydrophobic chains on surfaces with ranging hydrophobicity are surveyed by surface forces apparatus. Our findings revealed that with partial hydrophobicity, a long-range electrical double-layer repulsive force pertains between surfaces, while between fully hydrophobized surfaces, only steric hindrance is observed, and the hydrophobic chains maintain configuration even after long time compression. Our findings provide useful implications for understanding hydrophobic interactions.

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Section: Introductionmentioning

confidence: 99%

Probing the nanomechanics of interfacial interactions between hydrophobic surfaces

Lu,

Wang,

Wang

et al. 2024

Front. Phys.

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“…The anionic–nonionic surfactant contains both anionic and nonionic structures, allowing them to reduce salt sensitivity and enhance the cloud points . The introduction of nonionic chain segments can also enhance the hydration capability of surfactant molecules, resulting in better solubility and dispersibility in water. − It can also reduce the surface tension and viscosity of surfactant molecules, making them more easily mixed with other substances and enhancing their applicability …”

Section: Introductionmentioning

confidence: 99%

Compound Anionic–Nonionic Surfactant System with Excellent Temperature and Salt Resistance for Enhanced Oil Recovery

Li,

Liu,

Jin

et al. 2023

Energy Fuels

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The development of a temperature- and salt-resistant surfactant system is of great significance in enhanced oil recovery. In this study, two anionic–nonionic surfactants, alkylphenol polyoxyethylene ether carboxylate sodium-10Na (APEC-10Na) and fatty alcohol polyoxyethylene ether carboxylate sodium-9Na (AEC-9Na), were applied to construct a compound surfactant system. When the total concentration was 0.3% and the mass ratio of APEC-10Na to AEC-9Na was 7:3, the compound system could reduce the interfacial tension between oil and water to 8.1 × 10–2 mN·m–1, which could be attributed to the dense arrangement of the surfactant molecules in the interface. The system can resist temperatures up to 110 °C and tolerate a monovalent salt concentration of 18 × 104 mg L–1 and a divalent salt concentration of 8 × 103 mg L–1. The compound surfactant system can modify the rock surface wettability from strong hydrophobicity to strong hydrophilicity, with an underwater–oil contact angle reaching 132.4° for the treated rock surface. The oil film peeling rate of the compound system is 73.4%, which is 29.2% higher than that of the commercial system and 41% higher than that of the formation water. The oil recovery rate of the compound system in core displacement experiments is 61.7%, which is 4.8% higher than that of the commercial system and 14% higher than that of the formation water. The compound surfactant system proposed in this work not only achieved low interfacial tension under high-temperature and high-salinity conditions but also realized effective interface wettability regulation, sufficient stripping of adhered oil films, and promotion of oil droplet migration, providing guidance in designing compound surfactant system for the efficient development of high-temperature and high-salinity reservoirs.

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Synergistic effect of a mixture of ethoxyphosphoric esters and sodium oleate in aqueous solutions

Cheremisina,

Gorbacheva,

Balandinsky

et al. 2024

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Anionic-nonionic and nonionic mixed surfactant systems for oil displacement: Impact of ethoxylate chain lengths on the synergistic effect

Cited by 7 publications

References 39 publications

Probing the nanomechanics of interfacial interactions between hydrophobic surfaces

Probing the nanomechanics of interfacial interactions between hydrophobic surfaces

Compound Anionic–Nonionic Surfactant System with Excellent Temperature and Salt Resistance for Enhanced Oil Recovery

Synergistic effect of a mixture of ethoxyphosphoric esters and sodium oleate in aqueous solutions

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