$\begin{array}{l}\displaystyle R_s(p, T) = c_1 \, \gamma_g \, p^{c_2} \, \exp \left[ \frac{c_3 \, \gamma_{API}}{T + 459.67} \right]\end{array}$

where

$\begin{array}{l}p\end{array}$	psia	Fluid pressure
$\begin{array}{l}T\end{array}$	°F	Initial formation temperature
$\begin{array}{l}\gamma_{API}\end{array}$	°API	Oil API gravity
$\begin{array}{l}\gamma_o\end{array}$	frac	Oil specific gravity
$\begin{array}{l}\gamma_g\end{array}$	frac	Gas specific gravity

	$\begin{array}{l}\gamma_{API} \leq 30 \ {\rm API}\end{array}$	$\begin{array}{l}\gamma_{API} > 30 \ {\rm API}\end{array}$
$\begin{array}{l}c_1\end{array}$	0.0362	0.0178
$\begin{array}{l}c_2\end{array}$	1.0937	1.1870
$\begin{array}{l}c_3\end{array}$	25.7240	23.9310

References

Page tree