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

作　　者：Mostafa Lashkarbolooki Shahab Ayatollahi 

机构地区：[1]School of Chemical Engineering, Babol Noshirvani University of Technology, Babol, Iran [2]School of Chemical and Petroleum Engineering Sharif University of Technology, Tehran, Iran

出　　处：《Chinese Journal of Chemical Engineering》2017年第12期1820-1830,共11页中国化学工程学报（英文版）

摘　　要：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 mesoequilibrium 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 surfaceactive components and(b) surface excess concentration of them at fluid/fluid interface are proposed and discussed in details.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 mesoequilibrium 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 IFF 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.

关 键 词：Dynamic IFT ADSORPTION Ion Crude oil EOR 

分 类 号：TE621[石油与天然气工程—油气加工工程]