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石油工业表面活性剂的热力学与界面表征：温和条件下临界胶束浓度和界面张力行为的研究

Thermodynamic and Interfacial Characterization of Petroleum Industry Surfactants: A Study on Critical Micelle Concentration and Interfacial Tension Behavior under Mild Conditions.

作者信息

Bejczi Rebeka, Nagy Roland

机构信息

Department of MOL Hydrocarbon and Coal Processing, University of Pannonia, Veszprém, H-8200, Hungary.

出版信息

ChemistryOpen. 2025 Sep;14(9):e202500066. doi: 10.1002/open.202500066. Epub 2025 May 9.

DOI:10.1002/open.202500066
PMID:40347066
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12409832/
Abstract

Surfactants play a vital role in oil and gas applications, particularly in enhanced oil recovery (EOR), where interfacial tension (IFT) reduction and micellization are key to improving fluid mobility. This study aims to evaluate the interfacial and thermodynamic properties of five widely used petroleum surfactants to better understand their efficiency under mild reservoir-like conditions. IFT is measured using the spinning drop tensiometer across a temperature range of 25-40 °C, while critical micelle concentrations (CMC) are determined via conductometric methods. Thermodynamic parameters of micellization are calculated from temperature-dependent CMC data. The results show that micellization is an entropy-driven process for all tested surfactants. The studied surfactants significantly reduce IFT values within the tested temperature range, underscoring their potential for practical application in EOR formulations. The study also confirms that accurate determination of CMC is essential in optimizing surfactant efficiency under varying environmental conditions.

摘要

表面活性剂在石油和天然气应用中起着至关重要的作用，特别是在提高采收率（EOR）方面，其中降低界面张力（IFT）和胶束化是提高流体流动性的关键。本研究旨在评估五种广泛使用的石油表面活性剂的界面和热力学性质，以便在类似油藏的温和条件下更好地了解它们的效率。使用旋转滴张力计在25-40°C的温度范围内测量IFT，同时通过电导法测定临界胶束浓度（CMC）。胶束化的热力学参数由依赖温度的CMC数据计算得出。结果表明，胶束化对于所有测试的表面活性剂来说都是一个熵驱动的过程。所研究的表面活性剂在测试温度范围内显著降低IFT值，突出了它们在EOR配方中实际应用的潜力。该研究还证实，准确测定CMC对于在不同环境条件下优化表面活性剂效率至关重要。

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本文引用的文献

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Effects of Surfactants on Oil Droplet Demulsification in Oil-in-Water Emulsions under an Electric Field: A Molecular Dynamics Study.电场作用下表面活性剂对水包油乳液中油滴破乳的影响：分子动力学研究
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Synthesis, characterization, physical and thermodynamic properties of a novel anionic surfactant derived from .
一种源自……的新型阴离子表面活性剂的合成、表征、物理及热力学性质
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Surfactant Adsorption Isotherms: A Review.表面活性剂吸附等温线：综述
ACS Omega. 2021 Nov 24;6(48):32342-32348. doi: 10.1021/acsomega.1c04661. eCollection 2021 Dec 7.
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Adsorption of Surface Active Ionic Liquids on Different Rock Types under High Salinity Conditions.高盐条件下表面活性离子液体在不同岩石类型上的吸附
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