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The quantitative measure of solution gas in live oil:
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| body | 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}} |
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where
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| body | V_{Oo}^{\LARGE \circ}= \frac{m_{Oo}}{\rho_O^{\LARGE \circ}} |
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– STP volume of dead oil component of mass and STP density | LaTeX Math Inline |
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| body | \rho_O^{\LARGE \circ} |
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| body | V_{Go}^{\LARGE \circ}= \frac{m_{Go}}{\rho_G^{\LARGE \circ}} |
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– STP volume of natural gas component of mass and STP density | LaTeX Math Inline |
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| body | \rho_G^{\LARGE \circ} |
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is a function of pressure and temperature due to oil-gas exchange |
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