Geoscience Reference
In-Depth Information
20
0
-20
-40
-60
-80
80
70
60
50
40
30
20
10
35
40
45
50
55
60
Density of Reservoir Oil, lb/ft
3
Pertrosky-Farshad *
Hanafy et al.
Vasquez-Beggs*
Dindoruk-Chrisman*
Bergman-Sutton*
* used Beggs-Robinson equation to calculate oil viscosity at bubblepoint pressure
Fig. 3-42. Average relative errors and average absolute relative errors of subsets of the data
described in table 3-26 sorted on reservoir oil density show the quality of selected correlation
equations for estimating reservoir oil viscosities for pressures greater than bubblepoint pressure
across the full range of this independent variable.
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