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Experimental and modeling investigation of dynamic interfacial tension of asphaltenic-acidic crude oil/aqueous phase containing different ions

Lashkarbolooki, M ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1016/j.cjche.2017.02.004
  3. Abstract:
  4. In this way, after experimental measurement of interfacial tension, different models including mono-exponential decay, dynamic adsorption models and empirical equation are used to correlate this time-dependent behavior of interfacial tension (IFT). During the modeling approach, the induction, adsorption, equilibrium, and meso-equilibrium times as well as diffusivity of surface active components known as natural surfactant including asphaltene and resin from crude oil to the interface are obtained. In addition, the surface excess concentration of surface active components at the interface and Gibbs adsorption isotherm are utilized to analyze the measured dynamic IFTs. Finally, the mechanisms of crude oil/aqueous solution IFT including (a) the activity of surface-active components and (b) surface excess concentration of them at fluid/fluid interface are proposed and discussed in details. © 2017 Elsevier B.V
  5. Keywords:
  6. Dynamic IFT ; EOR ; Ion ; Crude oil ; Ions ; Dynamic interfacial tension ; Empirical equations ; Exponential decays ; Gibbs adsorption isotherms ; Natural surfactants ; Surface active components ; Surface excess concentration ; Time dependent behavior ; Adsorption
  7. Source: Chinese Journal of Chemical Engineering ; 2017 ; 10049541 (ISSN)
  8. URL: https://www.sciencedirect.com/science/article/abs/pii/S1004954116309788