PROPERTIES OF OILFIELD BRINES - Petroleum Reservoir Fluid Property Correlations - page 145

Figure 4-7 shows the distribution of data points in the brine
compressibility database by pressure and temperature. Compared to
the complete brine density database, the compressibility database has
only a limited range of data. The Gibson-Loeffler data set includes
compressibility data for pressures up to 14,500 psia (100 MPa), but only
for temperatures up to 185ºF (85ºC). 11 The Rowe-Chou data set, on the
other hand, includes compressibility data for temperatures up to 347ºF
(175ºC), but only includes pressures up to 4,930 psia (34 MPa). 12
Figure 4-8 shows the distribution of data points in the compressibility
database by salinity and temperature. The database has good coverage
over the range of salinities from 0 to 25 wt% sodium chloride, but the
coverage in temperature is limited.

30%

25%

20%

15%

10%

5%

0%

0 100 200 300 400 500 600

Temperature, °F

Freyer (1931) Gibson-Loeffler (1949) Rowe-Chou (1970)

Fig. 4-8. Distribution of data points in the brine compressibility database, salinity vs. temperature