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LaTeX Math Block
anchorRv
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P_d = 8.48 + 0.32239 \cdot Z + 0.000477 \cdot Z^2
LaTeX Math Block
anchorZ
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Z = \sum_{n=0}^3 \, Z_n
LaTeX Math Block
anchorZn
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Z_n = C_{n0} + C_{n1} \cdot {\rm VAR}_n + C_{n2} \cdot {\rm VAR}_n^2 

where

LaTeX Math Inline
bodyp_d

psiaDew point pressure

and

nVARn

Cn0Cn1Cn2
1

LaTeX Math Inline
body--uriencoded--\ln R_%7Bvd%7D

 Vaporized Oil Ratio at Dew point pressurestb/MMscf9.8895-0.87528-0.01691
2

LaTeX Math Inline
body--uriencoded--\gamma_%7Bo%7B\rm API%7D%7D

Initial stock-tank condensate API gravity

°API11.7-0.297090.00151
3

LaTeX Math Inline
body--uriencoded--\gamma_%7Bg Rd%7D

Gas specific gravity recombined to the dew pointfrac3.5202-2.9145-0.81744

...

The correlation is built over the following range:




MinimumMedianMaximum
Vaporized Oil Ratio  for recombined dewpoint gas composition

LaTeX Math Inline
body--uriencoded--R_%7Bvd%7D

stb/MMscf8.8247.05436.8
Initial stock-tank condensate API gravity for recombined dewpoint gas composition

LaTeX Math Inline
body--uriencoded--\gamma_%7Bo%7B\rm API%7D%7D

°API35.6
37
55.
8
176.5
Gas specific gravity
recombined to the dew point
for recombined dewpoint gas composition

LaTeX Math Inline
body--uriencoded--\gamma_%7Bg Rd%7D

frac0.
643
6090.951.
568
623
Fluid  temperature

LaTeX Unit
bodyT

°F93
126
266.7348
Fluid 
Dew point pressure

LaTeX Unit
bodyp_d

psia1,8705,
115
093
9
10,
015
980


The correlation has been built for the

LaTeX Math Inline
bodyR_v
measured at the first stage of separator (as the oil yield measurements at second stage separator and stock tank are not readily available).

...