Investigation on the adsorption and surface activity of imidazolium chloride-based ionic liquids (n = 12, 18); resin and asphaltene synthetic oil and high salinity
Abstract Unfortunately, there is no report regarding the impact of resin and asphaltene on surfactant adsorption and interfacial tension (IFT) reduction especially in the presence of ionic liquids (ILs) as a new class of surfactants. In this way, the current study is designed and performed for the f...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2025-08-01
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| Series: | Journal of Petroleum Exploration and Production Technology |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/s13202-025-02037-0 |
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| Summary: | Abstract Unfortunately, there is no report regarding the impact of resin and asphaltene on surfactant adsorption and interfacial tension (IFT) reduction especially in the presence of ionic liquids (ILs) as a new class of surfactants. In this way, the current study is designed and performed for the first time to investigate the effects of resinous and asphaltenic synthetic oils from acidic and basic crude oils on the adsorption of two ILs namely 1-dodecyl 3-methyl imidazolium chloride ([C12mim][Cl]), and 1-octadecyl-3-methyl imidazolium chloride ([C18mim][Cl]) under high salinity condition of 210,000 ppm of NaCl and the IFT variation. Moreover, the effect of pH in the range of 3.5–11 on the IFT, and adsorption of the ILs on the carbonate rock surface was examined. The obtained results revealed the undeniable impact of alkyl chain length on the IFT reduction to a minimum value of 0.07 mN/m for basic resinous synthetic oil (BRSO) and [C18mim][Cl]. The results also revealed the higher adsorption of surfactants in the presence of resin molecules (1.64 mg IL/g rock for BRSO at pH of 11) due to their more branched structure. Moreover, the higher adsorption of ILs for the asphaltenic synthetic oil (ASO) and resinous synthetic oil (RSO) extracted from the basic crude oil at a pH of 7 was observed which was related to the higher content of heteroatoms (RSO = 18.5% and ASO = 23.6% for synthetic oil extracted from basic crude oil). Finally, the obtained results (IFT values and IL adsorption values) were used to select the optimum chemical formulation for core flooding experiments. The performed core flooding experiments revealed the maximum tertiary oil recovery of about 12.5% based on the original oil in place (OOIP). |
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| ISSN: | 2190-0558 2190-0566 |