PROPERTIES OF OILFIELD BRINES - Petroleum Reservoir Fluid Property Correlations - page 184

Table 4-14. Coefficients for Mao-Duan brine viscosity correlation, equations (4.41), (4.43), (4.44),
and (4.4_)
Coefficient

Value Coefficient Value

d 1 0.28853170×10 7 a 0 −0.21319213

−0.11072577×10 5 0.13651589×10 −2

d 2 a 1

d 3 −0.90834095×10 1 a 2 −0.12191756×10 −5

d 4 0.30925651×10 −1

d 5 −0.27407100×10 −4 b 0 0.69161945×10 −1

d 6 −0.19283851×10 7 b 1 −0.27292263×10 −3

d 7 0.56216046×10 4 b 2 0.20852448×10 −6

d 8 0.13827250×10 2

d 9 −0.47609523×10 −1 c 0 −0.25988855×10 −2

d 10 0.35545041×10 −4 c 1 0.77989227×10 −5

Units Conversions

Standard conversions
Table 4-15 gives conversion factors for converting between metric
and oilfield units.

Table 4-15. Oilfield/metric conversion factors
Quantity From To Multiply by Divide by

Pressure psia MPa 6.89475729×10 -3 1.45037738×10 2

Compressibility MPa -1 psi -1 6.89475729×10 -3 1.45037738×10 2

Density g/cm 3 lb m /ft 3 6.24279606×10 1 1.60184634×10 -2

Specific volume cm 3 /g ft 3 /lb m 1.60184634×10 -2 6.24279606×10 1

Formation volume factor cm 3 /cm 3 bbl/STB 1 1

Solution gas-water ratio cm 3 /cm 3 scf/STB 5.61458333 1.78107607×10 -1

Viscosity Pa·s cp 1,000 1×10 -3

Nonstandard conversions
Temperature. Equation (4.49) is used to convert temperature in degrees
Fahrenheit to degrees Celsius.