Interfacial rheological properties

The interfacial rheologic properties are extremely sensitive parameters toward the chemical composition of immiscible formation liquids [1053]. Therefore comparison and interpretation of the interfacial rheologic properties may contribute significantly to extension of the spectrum of the reservoir characterization, better understanding of the displacement mechanism, development of more profitable enhanced and improved oil-recovery methods, intensification of the surface technologies, optimization of the pipe line transportation, and improvement of the refinery operations [1056]. 

Interfacial rheologic properties of different crude oil-water systems were determined in wide temperature and shear rate ranges and in the presence of inorganic electrolytes, surfactants, alkaline materials, and polymers [1056]. 

Caustic Waterflooding. In caustic waterflooding, the interfacial rheologic properties of a model crude oil-water system were studied in the presence of sodium hydroxide. The interfacial viscosity, the non-Newtonian flow behavior, and the activation energy of viscous flow were determined as a function of shear rate, alkali concentration, and aging time. The interfacial viscosity drastically... 

I. Lakatos and J. Lakatos-Szabo. Effect of lOR/EOR (improved oil recovery/enhanced oil recovery) chemicals on interfacial rheological properties of crude oil/water systems. In Proceedings Volume. SPE Oilfield Chem Int Symp (Houston, TX, 2/13-2/16), 2001 SPE Number 65391. 

J. Lakatos-Szabd and I. Lakatos. Effect of sodium hydroxide on interfacial rheological properties of oil-water systems. In Colloids Surfaces, Sect A, volume 149, pages 507-513. 9th Surface Colloid Sci Int Conf (Sofia, Bulgaria, 7/6-7/12), 1997. 

J. Lakatos-Szabo, I. Lakatos, and B. Kosztin. Role of interfacial rheological properties of oil/water systems in mechanism and design of EOR/IOR technologies. In Proceedings Volume, number 057. 9th EAGE Impr Oil Recovery Europe Symp (The Hague, Netherlands, 10/20-10/22) Proc, 1997. 

Bos, M.A., van Vliet, T. (2001). Interfacial rheological properties of adsorbed protein layers and surfactants. Advances in Colloid and Interface Science, 91, 437-471. 

Malhotra, A.K. Wasan, D.T. Interfacial Rheological Properties of Adsorbed Surfactant Films with Applications to Emulsion and Foam Stability in Thin Liquid Films, Ivanov, I.B. (Ed.), Dekker New York, 1988, pp. 829-890. 

Edwards, D.A. and Wasan, D.T., Foam rheology the theory and role of interfacial rheological properties, in Foams Theory, Measurements, and Applications, Prud home, R.K. and Khan, S.A., Eds., Marcel Dekker, New York, 1996, p. 189. 

Camtel Ltd, Comparison of the Interfacial Rheological Properties of Commercial Shampoos, DS5 data sheet, April 2003. 

Malhotra AK, Wasan DT. Interfacial rheological properties of adsorbed surfactant films with applications to emulsion and foam stability. In Ivanov IB, ed. Thin Liquid Films, Fundamentals and Applications. Vol. 29. Surfactant Science Series. New York Marcel Dekker, 1988 829-890. 

An actual overview on interfacial rheological properties of adsorbed surfactant layers stabilising foams and emulsions has been given by Malhotra Wasan (1988). The results of... 

Interfacial rheological properties are expressed as interfacial elasticity and interfacial viscosity. Based on the study of coalescence of cmde oil droplets, Malhotra and Wasan (70, 71) concluded that there is a good correlation between coalescence time and interfacial viscosity, i.e., the higher... 

Wasan, D. T. and Mohan. V.. Interfacial rheological properties of fluid interfaces containing surfactants, in Improved Oil Recovery by Surfactant and Polymer Flooding, Shah, D. O. and Schechter, R. S. (Eds), Academic Press, New York, 1977, pp. 161-203. 

Kausch CM et al (2003) Interfacial rheological properties of a series of bolaamphiphilic poly (fluorooxetane)s. Langmuir 19(18) 7354—7361... 

INTERFACIAL RHEOLOGICAL PROPERTIES OF CRUDE OIL/WATER SYSTEMS... 

In the foregoing sections, we have seen that adsorption dynamics, that is, the rate by which the interfacial tension decreases upon adsorption of the emulsifying or foaming agent, as well as the interfacial rheological properties play key roles in the formation and subsequent long-term stability of emulsions and foams. The coarseness and the stability of these dispersions may therefore be modulated on the basis of adsorption dynamics and interfacial rheological properties. 

The interactions between proteins and low-molecular-weight surfactants at interfaces have crucial effects on physical states of interfaces, such as interfacial energy, interfacial rheological properties, C potential, and thickness of adsorbed layer. The competitive displacement of globular proteins by surfactants at liquid interfaces (normally, oil-water interfaces) has been extensively... 

Moreover, this model can also involve parameters that refer to the interfacial rheological properties, such as the interfacial dilation modulus and the interfacial shear modulus (Jacobs et al. 1999). Consequently, quantitative measurements of... 

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