麝香天然表面活性剂在高沥青质和低沥青质油藏中提高采收率：实验和分子证据

IF 5.2 2区化学 Q2 CHEMISTRY, PHYSICAL

Journal of Molecular Liquids Pub Date : 2025-10-04 DOI:10.1016/j.molliq.2025.128666

Hani Nasari , Mohammad Amin Gholamzadeh , Amin Azdarpour , Mostafa Narimani , Mohammad Reza Asghari Ganjeh

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引用次数: 0

摘要

研究了从百里香中提取的绿色表面活性剂在碳酸盐岩储层提高采收率（EOR）中的应用。研究了该表面活性剂与高沥青质（HAO）和低沥青质（LAO）两种原油在不同离子强度（IS）盐水组成下的界面性能。结果表明，在稀释的地层盐水（FB）中，当浓度为2000 ppm时，绿色表面活性剂显著降低了界面张力（IFT）， HAO的界面张力降至3.63 mN/m， LAO的界面张力降至4.88 mN/m。接触角的测量进一步证实了有效的润湿性改变，在Na₂CO₃存在的情况下，HAO的润湿性至少达到40.22°。泡沫性实验表明，在较低的氮气流量下，泡沫稳定性较好，特别是在富含碳酸盐的盐水中。岩心驱油测试表明，注入三级表面活性剂后，HAO的采收率从44.18%提高到83.31%，LAO的采收率从42.60%提高到64.50%。分子模拟通过确认在2000ppm附近形成胶束、有利的吸附能和一致的热力学趋势来补充实验室数据。通过原子力显微镜（AFM）和透射电子显微镜（TEM）的微观分析提供了胶束聚集和表面活性剂吸附的直观证据。总之，这项工作介绍了百里香提取物作为一种可行的天然表面活性剂，并强调了原油成分和盐水化学在优化提高采收率方面的重要性。

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Natural surfactant from Thymus vulgaris for oil recovery enhancement in high- and low-Asphaltene reservoirs: Experimental and molecular evidence

This study investigates the application of a green surfactant derived from Thymus vulgaris (thyme) for enhanced oil recovery (EOR) in carbonate reservoirs. The surfactant's interfacial performance was evaluated in conjunction with two types of crude oil, high-asphaltene (HAO) and low-asphaltene (LAO), under various brine compositions with a constant ionic strength (IS). Results revealed that the green surfactant noticeably reduced interfacial tension (IFT), with values dropping to 3.63 mN/m for HAO and 4.88 mN/m for LAO at a concentration of 2000 ppm in diluted formation brine (FB). Contact angle measurements further confirmed effective wettability alteration, reaching a minimum of 40.22° for HAO in the presence of Na₂CO₃. Foamability experiments showed superior foam stability at lower nitrogen flow rates, particularly with carbonate-rich brines. Core flooding tests demonstrated enhanced oil recovery, with recovery factors increasing from 44.18 % to 83.31 % for HAO and from 42.60 % to 64.50 % for LAO following tertiary surfactant injection. Molecular simulations complemented the laboratory data by confirming micelle formation near 2000 ppm, favorable adsorption energies, and consistent thermodynamic trends. Microscopic analysis via atomic force microscopy (AFM) and transmission electron microscopy (TEM) provided visual evidence of micelle aggregation and surfactant adsorption. Altogether, this work introduces thyme extract as a viable natural surfactant and highlights the importance of crude oil composition and brine chemistry in optimizing EOR performance.

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来源期刊

Journal of Molecular Liquids 化学-物理：原子、分子和化学物理

CiteScore

10.30

自引率

16.70%

发文量

2597

审稿时长

78 days

期刊介绍： The journal includes papers in the following areas: – Simple organic liquids and mixtures – Ionic liquids – Surfactant solutions (including micelles and vesicles) and liquid interfaces – Colloidal solutions and nanoparticles – Thermotropic and lyotropic liquid crystals – Ferrofluids – Water, aqueous solutions and other hydrogen-bonded liquids – Lubricants, polymer solutions and melts – Molten metals and salts – Phase transitions and critical phenomena in liquids and confined fluids – Self assembly in complex liquids.– Biomolecules in solution The emphasis is on the molecular (or microscopic) understanding of particular liquids or liquid systems, especially concerning structure, dynamics and intermolecular forces. The experimental techniques used may include: – Conventional spectroscopy (mid-IR and far-IR, Raman, NMR, etc.) – Non-linear optics and time resolved spectroscopy (psec, fsec, asec, ISRS, etc.) – Light scattering (Rayleigh, Brillouin, PCS, etc.) – Dielectric relaxation – X-ray and neutron scattering and diffraction. Experimental studies, computer simulations (MD or MC) and analytical theory will be considered for publication; papers just reporting experimental results that do not contribute to the understanding of the fundamentals of molecular and ionic liquids will not be accepted. Only papers of a non-routine nature and advancing the field will be considered for publication.