Geoscience Reference
In-Depth Information
4
3
2
1
0
-1
-2
-3
-4
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
20
25
30
35
40
45
50
Stock-Tank Oil Gravity, °API
Eq. 3.21b,
p
b
from data
Eq. 3.21b,
p
b
from Eqs. 3.7
Standing
Kartoatmodjo-Schmidt
Casey-Cronquist,
p
b
from Eqs. 3.7
Fig. 3-26. Average relative errors and average absolute relative errors of subsets of the data
described in table 3-9 sorted on stock-tank oil gravity show the quality of selected correlation
equations for estimating oil formation volume factors for pressures equal to and less than
bubblepoint pressure across the full range of this independent variable.
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