Rs (Saturation GOR)

The quantitative measure  of Saturation gas: $//<![CDATA[ \begin{array}{l}R_s = \frac{V_{Go}^{\LARGE \circ}}{V_{Oo}^{\LARGE \circ}} = \frac{m_{Go}}{ m_{Oo}} \cdot \frac{\rho_O^{\LARGE \circ}}{\rho_G^{\LARGE \circ}}\end{array} //]]>$

where 

$//<![CDATA[ \begin{array}{l}V_{Oo}^{\LARGE \circ}= \frac{m_{Oo}}{\rho_O^{\LARGE \circ}}\end{array} //]]>$ – STP volume of dead oil component of mass  $//<![CDATA[ \begin{array}{l}m_{Oo}\end{array} //]]>$ and STP density $//<![CDATA[ \begin{array}{l}\rho_O^{\LARGE \circ}\end{array} //]]>$

$//<![CDATA[ \begin{array}{l}V_{Go}^{\LARGE \circ}= \frac{m_{Go}}{\rho_G^{\LARGE \circ}}\end{array} //]]>$ – STP volume of natural gas component of mass $//<![CDATA[ \begin{array}{l}m_{Go}\end{array} //]]>$ and STP density $//<![CDATA[ \begin{array}{l}\rho_G^{\LARGE \circ}\end{array} //]]>$

$//<![CDATA[ \begin{array}{l}R_s(p, T)\end{array} //]]>$ is a function of pressure and temperature due to oil-gas exchange