PROPERTIES OF OILFIELD BRINES - Petroleum Reservoir Fluid Property Correlations - page 148

show a much lower AARE in compressibility for temperatures
between 104ºF and 122ºF (40ºC and 50ºC). This is due to the fact
that only the higher quality Gibson-Loeffler data set contains brine
compressibility data points within this range of temperatures. Although
Osif recommended his correlation be used only for temperatures from
200ºF to 270ºF (93.3ºC to 132ºC), the Osif correlation gives excellent
results for temperatures from 122ºF to 302ºF (50ºC to 150ºC), with a
maximum AARE of 2.05%. For temperatures below 122ºF (50ºC), the
Osif correlation gives an AARE that approaches 10%.

100.0%

10.0%

1.0%

0.1%

0 50 100 150 200 250 300

Temperature, °F

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

Rogers-Pitzer (1982)
Osif (1988)

Archer (1992)

Fig. 4-10. Average absolute relative error in brine compressibility as a function of temperature
for various correlations, based on the compressibility data subset of the brine density database
in table 4-1