Page 89 - Petrophysics 2E
P. 89
PROPERTIES OF SUBSURFACE FLUIDS 63
2 24 22 2
-
P
P
c
1.000
60 loa 140 180 220 260
TEMPERATURE, "F
P@re 2.14. Solubility of natural gas in water as a function of temperature and
pressure [27J.
TABLE 2.4
SALINITY CORRECTION FACTOR FOR ESTIMATION
OF THE SOLUBILITY OF HYDROCARBON GASES BRINE [ZZ]
IN
X, (salinity correction factor) T("9
75 100
50 150
44 200
33 250
where: Rwp = solubility of gas in pure water, m3/m3 (SCF/bbl).
RB = soiubility of gas in brine, m3/m3 (SCFhbl).
X, = salinity correction factor (Table '2.4).
EXAMPLE
Brine from a 7,000 feet deep reservoir in Kansas where the mean
annual surface temperature is 70°F contains 80,000 ppm of total
