A study on the bio-based surfactant sodium cocoyl alaninate as a foaming agent for enhanced oil recovery in high-salt oil reservoirs

Hao, Hongda; Wu, Hongze; Diao, Haoyu; Zhang, Yixin; Yang, Shuo; Deng, Song; Li, Qiu; Yan, Xiaopeng; Peng, Mingguo; Qu, Ming; Li, Xinyu; Xu, Jiaming; Yang, Erlong

doi:10.1039/d3ra07840j

RSC Adv.

2024

DOI: 10.1039/d3ra07840j

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A study on the bio-based surfactant sodium cocoyl alaninate as a foaming agent for enhanced oil recovery in high-salt oil reservoirs

Hongda Hao,

Hongze Wu,

Haoyu Diao

et al.

Abstract: A bio-based surfactant of SCA is proposed as a foaming agent, which has better foaming ability, stability, and anti-salt ability compared to OP-10 and SDS. It can enhance oil recovery by more than 15% after primary waterflooding.

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Investigation of the Effect of SCA Surfactant on Enhanced Oil Recovery Using Glass Micromodel

Shojaei,

Nasiri

2024

Arab J Sci Eng

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Investigation of the Effect of SCA Surfactant on Enhanced Oil Recovery Using Glass Micromodel

Shojaei,

Nasiri

2024

Arab J Sci Eng

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Hydrophilic Chain Length for Octylphenol Polyoxyethylene Ether Adsorption at the n-Hexadecane–Water Interface: Theoretical and Experimental Study

Liu,

Zhang,

Yuan

et al. 2024

J. Phys. Chem. B

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With the advancement of technologies for developing tight and shale reservoirs, nonionic surfactants have garnered significant attention due to their remarkable properties. The structure of these surfactants plays a crucial role in determining the characteristics of the oil−water interface, particularly influencing emulsification behavior and crude oil recovery. This study investigates the effect of varying the number of hydrophilic polar groups (n = 10, 20, 30, 50) in octylphenol polyoxyethylene ether (OP-n) on its adsorption behavior at the n-hexadecane−water interface using molecular dynamics simulation. The impact of these variations on interfacial properties was further analyzed through measurements of interfacial tension and observations of emulsion droplet morphology. The study results indicate that variations in the number of hydrophilic polar groups significantly affect interfacial properties. Increasing the number of hydrophilic polar groups led to a notable increase in the thickness of the n-hexadecane or water phase, as well as the thickness of the water or oil layer and the surfactant layer. Moreover, when the number of hydrophilic polar groups reached 20, the OP-n molecules exhibited a more curled conformation at the interface, enhancing their ability to encapsulate water and resulting in a decrease in the diffusion coefficient of the molecules in each phase. Additionally, interfacial tension was found to be positively correlated with the number of hydrophilic polar groups and remained unchanged beyond a certain emulsion diameter. This study provides a theoretical basis and reference data for optimizing surfactant structures to improve crude oil recovery.

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A study on the bio-based surfactant sodium cocoyl alaninate as a foaming agent for enhanced oil recovery in high-salt oil reservoirs

Abstract: A bio-based surfactant of SCA is proposed as a foaming agent, which has better foaming ability, stability, and anti-salt ability compared to OP-10 and SDS. It can enhance oil recovery by more than 15% after primary waterflooding.

Cited by 2 publications

References 57 publications

Investigation of the Effect of SCA Surfactant on Enhanced Oil Recovery Using Glass Micromodel

Investigation of the Effect of SCA Surfactant on Enhanced Oil Recovery Using Glass Micromodel

Hydrophilic Chain Length for Octylphenol Polyoxyethylene Ether Adsorption at the n-Hexadecane–Water Interface: Theoretical and Experimental Study

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