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| p_{pc} = 756.8 -131.07 \, \gamma_g - 3.6 \, \gamma_g^2 |
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| T_{pc} = 169.2 +349.5 \, \gamma_g - 74 \, \gamma_g^2 |
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body | --uriencoded--1.15< T_%7Bpc%7D <3 |
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| body | --uriencoded--0.2< p_%7Bpc%7D < 15 | High molecular weight gases, rich in heptanes
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| p_{pc} = 709.604 - 58.718 \, \gamma_g |
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| T_{pc} = 170.491 +307.344 \, \gamma_g |
| Guo and Ghalambor (2005) | H2S < 3% N2 < 5% Total inorganic compounds < 7% |
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| p_{pc} = 667 - 15.0 \, \gamma_g - 37.5 \, \gamma_g^2 |
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| T_{pc} = 168 +325 \, \gamma_g - 12.5 \, \gamma_g^2 |
| Standing, 1981Standing, 19811977 | Total inorganic compounds = 0% | Low molecular weight California natural gases |
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| p_{pc} = 706 - 51.7 \, \gamma_g - 11.1 \, \gamma_g^2 |
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| T_{pc} = 187 +330 \, \gamma_g - 71.5 \, \gamma_g^2 |
| Standing, 19811977 | Total inorganic compounds = 0% | Low molecular weight California gas condensate |
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| p_{pc} = 787.06 - 147.34 \, \gamma_g - 7.916 \, \gamma_g^2 |
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| T_{pc} = 149.18 +358.14 \, \gamma_g - 66.976 \, \gamma_g^2 |
| Elsharkawy et al. (2000) |
| Retrograde gases and condensates |
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| p_{pc} = 678 - 50\, (\gamma_g - 0.5) - 206.7 \, y_{N_2} + 440 \, y_{CO_2} + 606.7 \, y_{H_2S} |
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| T_{pc} = 326 +315.7 \, (\gamma_g -0.5) - 240 \, y_{N_2} - 83.3 \, y_{CO_2} + 133.3 \, y_{H_2S} |
| Ahmed (1989) |
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[ Critical Point (Tc, pc) ][ Сritical Temperature Tc ][ Critical Pressure (pc) ]
Reference
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- Sutton, R.P. 1985. Compressibility Factors for High-Molecular-Weight Reservoir Gases. Presented at the SPE Annual Technical Conference and Exhibition, Las Vegas, Nevada, USA, 22-26 September. SPE-14265-MS. http://dx.doi.org/10.2118/14265-MS
Standing, M. B., Volumetric and Phase Behavior of Oil Field Hydrocarbon Systems, pp. 125–126. Dallas: Society of Petroleum Engineers, 1977.