PROPERTIES OF OILFIELD BRINES - Petroleum Reservoir Fluid Property Correlations - page 177

The two Kestin-Shankland correlation equations, which they
referred to as (a) and (b), gave very similar results, with correlation (a)
giving slightly better results for the database in table 4-12. The Kestin-
Shankland (b) correlation was omitted from the graphical comparisons.
The Spivey et al. correlation equation gave results very similar to
those of the Kestin et al. correlation on which it was based, and it was
also omitted from the graphical comparisons.
Figure 4-22 shows the ARE and the AARE as functions of temperature
for the selected brine viscosity correlations.
The Mao-Duan (2009) correlation gave the best overall performance,
with a maximum AARE of 1.03%, with the Phillips et al. (1980), Kestin
et al. (1978), and Kestin-Shankland (1984)(a) correlations also having
AAREs less than 1.5% across the entire range of temperatures.
Figure 4-23 shows the ARE and AARE as functions of pressure for
the selected brine viscosity correlations.
The Mao-Duan (2009) correlation gave the best overall performance,
with a maximum AARE of 0.76%, with the Phillips et al. (1980), Kestin
(1978), and Kestin-Shankland (1984) (a) correlations also having AAREs
less than 1.2%, across the entire range of pressures.
Figure 4-24 shows the ARE and the AARE as functions of salinity for
the selected brine viscosity correlations.
Again, the Mao-Duan (2009) correlation gave the best overall
performance, with a maximum AARE of 0.87%, with the Phillips et al.
(1980), Kestin (1978), and Kestin-Shankland (1984)(a) correlations also
having AAREs less than 1.4%, across the entire range of salinities.