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基于咪唑鎓的离子液体在阿联酋致密油藏可持续提高采收率方面的潜力。

Potential of Imidazolium-Based Ionic Liquids for Sustainable Enhancement of Oil Recovery in Emirati Tight Reservoirs.

作者信息

Mousa Noran, Abu-Jdayil Basim, Zekri Abdulrazag Y

机构信息

Chemical & Petroleum Engineering Department, United Arab Emirates University, P.O. Box 15551, Al Ain, United Arab Emirates.

出版信息

ACS Omega. 2025 Jul 16;10(29):32122-32134. doi: 10.1021/acsomega.5c03875. eCollection 2025 Jul 29.

DOI:10.1021/acsomega.5c03875
PMID:40757362
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12311699/
Abstract

In response to the increasing global demand for energy and the limitations of conventional oil recovery methods, this study investigates the potential of imidazolium-based ionic liquids (ILs) as novel agents for enhanced oil recovery (EOR). The effects of four imidazolium ILs1-decyl-3-methylimidazolium chloride, 1-dodecyl-3-methylimidazolium chloride, 1-dodecyl-3-methylimidazolium tetrafluoroborate, and 1-hexadecyl-3-methyl imidazolium bromide (CmimBr)on phase behavior, interfacial tension (IFT), and wettability between oil, water and rock were examined in the context of Emirati tight oil reservoirs. In addition, the thermal stability of these ILs was investigated under extreme temperatures of up to 600 °C using thermogravimetric analysis. Experiments were conducted across a range of temperatures (up to 110 °C), IL concentrations (0, 500, 1500, and 3000 ppm), and salinities (seawater and formation brine). In particular, the IL with the longer alkyl chain (CmimBr) effectively reduced the IFT by >99% in formation brine at 3000 ppm and 110 °C and altered contact angles to as low as 15.37°. Emulsification experiments were conducted with the emulsions analyzed under a microscope to measure the size of water droplets within the microemulsions. It was observed that all imidazolium ILs tested at 500 ppm successfully stabilized oil/brine emulsions, maintaining complete phase integrity for at least 48 h. Imidazolium ILs with longer chains and bulky anions (CmimBF) showed adsorption as low as 2.71 mg/g, reducing chemical loss and enhancing EOR effectiveness. The findings indicate that the choice of IL and its concentration significantly impact the economic reduction of IFT and optimize EOR processes.

摘要

针对全球对能源需求的不断增长以及传统石油开采方法的局限性，本研究调查了咪唑基离子液体（ILs）作为新型强化采油（EOR）剂的潜力。在阿联酋致密油藏的背景下，研究了四种咪唑基离子液体——1-癸基-3-甲基咪唑氯盐、1-十二烷基-3-甲基咪唑氯盐、1-十二烷基-3-甲基咪唑四氟硼酸盐和1-十六烷基-3-甲基咪唑溴盐（CmimBr）对油、水和岩石之间的相行为、界面张力（IFT）和润湿性的影响。此外，使用热重分析在高达600°C的极端温度下研究了这些离子液体的热稳定性。实验在一系列温度（高达110°C）、离子液体浓度（0、500、1500和3000 ppm）和盐度（海水和地层盐水）下进行。特别是，具有较长烷基链的离子液体（CmimBr）在3000 ppm和110°C的地层盐水中能有效降低界面张力>99%，并将接触角改变至低至15.37°。进行了乳化实验，在显微镜下分析乳液以测量微乳液中的水滴大小。观察到，所有在500 ppm下测试的咪唑基离子液体都成功地稳定了油/盐水乳液，保持完全相完整性至少48小时。具有较长链和大体积阴离子的咪唑基离子液体（CmimBF）吸附量低至2.71 mg/g，减少了化学损失并提高了强化采油效果。研究结果表明，离子液体的选择及其浓度对界面张力的经济降低和强化采油工艺的优化有显著影响。

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