Oil correlations based on Gulf of Mexico oil samples.
Bubble point pressure | pb | psia | \displaystyle p_b =c_1 \cdot \left[ \frac{R_s^{c_2}}{\gamma_g^{c_3}} \cdot 10^X+ c_4 \right], X = c_5 \, T^{c_6} + c_7 \, \gamma_{API}^{c_8} c_1 = 112.727, \, c_2 = 0.5774, \, c_3 = 0.8439, \, c_4 = -12.340 c_5 = 4.561 \cdot 10^{-5}, \, c_6 = 1.3911, \, c_7 = -7.916 \cdot 10^{-4} \, c_8 = 1.5410 | |
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Rs | scf/stb | p ≤ pb | \displaystyle R_s(p, T) = \left[ a^{-1} p_b \, \gamma_g^{-c} \, \gamma_o^{-d} \, T^{-e} \right]^{1/b} a = 5.38088 \cdot 10^{-3}, \ b = 0.715082, \ c = -1.877840 , \ d = 3.1437, \ e = 1.32657 | |
Bo | bbl/stb | p ≤ pb | \displaystyle B_o(p, T) = 0.497069 + 0.862963 \cdot 10^{-3} \, T + 0.182594 \cdot 10^{-2} \, F + 0.318099 \cdot 10^{-5} \, F^2, \quad F =R_s^a \, \gamma_g^b \, \gamma_o^c a = 0.742390, \, b = 0.323294, \, c = -1.202040 |
where
Location | Gulf of Mexico | |
p | psia | Fluid pressure |
T | °R | Initial formation temperature |
\gamma_{API} | °API | Oil API gravity |
\gamma_o | frac | Oil specific gravity |
\gamma_g | frac | Gas specific gravity |
See Also
Petroleum Industry / Upstream / Petroleum Engineering / Subsurface E&P Disciplines / Reservoir Engineering (RE) / PVT correlations / Oil correlations