Geoscience Reference
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Recommended correlation equations for estimation of reservoir oil
densities at bubblepoint pressure
Recommended equations are given next.
32
(3.18a)
(3.18b)
(3.18c)
-49.8930
a
0
a
1
85.0149
a
2
-3.70373
a
3
0.0479818
a
4
2.98914
a
5
-0.0356888
Use of equations (3.18b) and (3.18c) requires a trial-and-error
procedure. Equation (3.18d) can be used to calculate a first trial value
of
ρ
po
. Successive substitutions for new trial values will converge readily.
(3.18d)
The adjustment from standard pressure to reservoir pressure may be
calculated with equation (3.18e).
(3.18e)
The adjustment from standard temperature to reservoir temperature
may be calculated with equations (3.18f) and (3.18g).
(3.18f)
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