Scientists from Carnegie Institution of Washington, China University of Geosciences, Peking University, Institute of Atmospheric Physics, CAS, Guangzhou Institute of Geochemistry,CAS and our institute attended this workshop.

Abstract

An accurate viscosity (dynamic viscosity) model is developed for aqueous
alkali-chloride solutions of the binary systems, LiCl–H2O, NaCl–H2O, and KCl–
H2O, from 273K to 623 K, and from 1 bar to 1,000 bar and up to high ionic strength.
The valid ionic strengths for the LiCl–H2O, NaCl–H2O, and KCl–H2O systems are
0 to 16.7mol · kg−1, 0 to 6mol · kg−1, and 0 to 4.5 mol · kg−1, respectively. Comparison
of the model with about 4,150 experimental data points concludes that the
average absolute viscosity deviation from experimental data in the above range is
within or about 1 % for the LiCl–H2O, NaCl–H2O, and KCl–H2O mixtures, indicating
the model is of experimental accuracy. With a simple mixing rule, this model can
be extrapolated to predict the viscosity of ternary aqueous alkali-chloride solutions,
making it useful in reservoir fluid flow simulation. A computer code is developed for
this model and can be obtained from the author: (maoshide@cugb.edu.cn).