PROPERTIES OF OILFIELD BRINES - Petroleum Reservoir Fluid Property Correlations - page 187

Greek
ζ Interaction coefficient in Duan et al. methane

solubility equations

ϑ Temperature parameter in IAPWS-95 vapor pressure equation,

dimensionless

λ Interaction coefficient in Duan et al. methane

solubility equations

μ Viscosity, cp, Pa·s

Standard chemical potential in Duan et al. methane solubility
equations, unitless

ρ Density, g/cm 3

Subscripts
0 At 70 MPa reference pressure
,0 Methane free
( brine ) Dissolved in brine
b Brine
c Critical
CH 4 Methane
( g ) Gas phase
H 2 O Water
m Salinity coefficient
M Molar
Na Sodium
NaCl Sodium chloride
r Relative

s Saturated

sc Standard conditions

u Undersaturated

w Pure water

w Brine [equations (4.32), (4.35), (4.36), and (4.37)]