PROPERTIES OF OILFIELD BRINES - Petroleum Reservoir Fluid Property Correlations - page 150

Figure 4-12 shows the AARE in brine compressibility as a function
of salinity for several compressibility correlations. Again, the modified
Spivey et al. correlation shows a lower AARE across the entire range of
salinities in the database.

100.0%

10.0%

1.0%

0.1%

0% 5% 10% 15% 20% 25% 30%

Salinity, weight % NaCl

Spivey et al. (modified)
Rowe-Chou (1970)

Rogers-Pitzer (1982)
Osif (1988)

Archer (1992)

Fig. 4-12. Average absolute relative error in brine compressibility as a function of salinity for
various correlations, based on the compressibility data subset of the brine density database
in table 4-1