Geoscience Reference
In-Depth Information
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.
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