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Synergistic effect of mixed anionic and cationic surfactant systems on the interfacial tension of crude oil-water and enhanced oil recovery
Rashmi Kumari, Abhijit Kakati, ,
Published in Taylor and Francis Inc.
2019
Volume: 40
   
Issue: 7
Pages: 969 - 981
Abstract

Surfactant based enhanced oil recovery (EOR) is an interesting area of research for several petroleum researchers. In the present work, individual and mixed systems of anionic and cationic surfactants consisting of sodium dodecyl sulphate (SDS) and cetyltrimethylammonium bromide (CTAB) in different molar ratios were tested for their synergistic effect on the crude oil-water interfacial tension (IFT) and enhanced oil recovery performance. The combination of these two surfactant systems showed a higher surface activity as compared to individual surfactants. The effect of mixed surfactant systems on the IFT and critical micellar concentration (CMC) is strongly depends on molar ratios of the two surfactant. Much lower CMC values were observed in case of mixed surfactant systems prepared at different molar ratios as compared to individual surfactant systems. The lowest CMC value was found when the molar concentration of SDS was higher than the CTAB. When the individual and mixed surfacant systems were tested for EOR performance through flooding experiments, higher ultimate oil recovery was obtained from mixed surfactant flooding compared to individual surfactants. Combination of SDS and CTAB or probably other anionic-cationic surfactants show synergism with substantial ability to reduce crude oil water IFT and can be a promising EOR method. © 2018, © 2018 Informa UK Limited, trading as Taylor & Francis Group.

About the journal
JournalData powered by TypesetJournal of Dispersion Science and Technology
PublisherData powered by TypesetTaylor and Francis Inc.
Open AccessNo
Concepts (19)
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    Anionic surfactants
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    Biophysics
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    Cationic surfactants
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    Crude oil
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    Dyes
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    Floods
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    Oil well flooding
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    Sodium compounds
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    SULFUR COMPOUNDS
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    Surface tension
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    Cetyltrimethylammonium bromide
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    Critical micellar concentrations
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    ENHANCED OIL RECOVERY
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    Mixed surfactant
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    MIXED SURFACTANT SYSTEMS
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    MOLAR CONCENTRATION
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    Sodium dodecyl sulphate
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    Synergism
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    Enhanced recovery