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Idowu T. Dosunmu, Subhash N. Shah
Steady shear and dynamics properties of drag reducing surfactant solutions
Appl. Rheol. 25:1 (2015) 12539 (10 pages)
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The rheological behavior of oilfield surfactants (Aromox™ APA-T and APA-TW) at various concentrations was studied using
steady shear and dynamic testing. The results showed that the solutions exhibit non-Newtonian behavior at all concentrations,
with their rheological character influenced by the temperature and ionic content of the base fluid. Temperature was
observed to have a significant effect on viscosity and dynamic data. The apparent viscosity at different temperatures could
be reduced to a single master curve using horizontal and vertical shift factors. However, satisfactory scaling could not be
attained for the dynamic or viscoelastic data. Molecular scaling using characteristic time for data at different concentrations
proved unsuccessful due to the strong non-Newtonian character of surfactant solutions. Scaling relations between rheological
parameters and concentration indicated the presence of long micelles in APA-T solutions. APA-TW solutions, on the other
hand, contained branched micelles.
► Cite this publication as follows:
Dosunmu IT, Shah SN: Steady shear and dynamics properties of drag reducing surfactant solutions, Appl. Rheol. 25 (2015) 12539.
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