PROPERTIES OF OILFIELD BRINES - Petroleum Reservoir Fluid Property Correlations - page 139

100000

10000

1000

100

10

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

Salinity, weight % NaCl

Adams (1931)
Gibson-Loeffler (1949)
Ellis (1966)
Millero (1970)

Hilbert (1979)
Rogers et al. (1982)
Gehrig et al. (1983)
Gates-Wood (1985)

Majer et al. (1988)
Osif (1988)
Mironenko (2001)

Fig. 4-3. Distribution of data points in updated brine density database, pressure vs. salinity

Comparison of correlations for brine density
Few correlations of brine density have been presented specifically
for oilfield use. Six correlations and equations of state were selected for
evaluation against the brine density database.
McCain presented a simple brine formation volume factor correlation
by fitting polynomials to graphical correlations for the change in
volume due to temperature (as a function of temperature), and the
change in volume due to pressure (as a function of both pressure and
temperature). 3 Density was obtained from the brine specific gravity as
a function of total dissolved solids, also using a polynomial fit. The