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Its composition is dominated by pure hydrocarbons (usually Alkanes, Naphthenes, Aromatics, Asphaltics) and may also include the other organic and inorganic chemical substances (like carbon dioxide, nitrogen, hydrogen sulfide, helium etc.).
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| Substance | Dry Gas | Wet Gas | Condensate | Volatile Oil | Black Oil | |
|---|---|---|---|---|---|---|
| CO2 | 0.10 | 1.41 | 2.37 | 1.82 | 0.02 | |
| N2 | 2.07 | 0.25 | 0.31 | 0.24 | 0.34 | |
| C1 | 86.12 | 92.46 | 73.19 | 57.60 | 34.62 | |
| C2 | 5.91 | 3.18 | 7.80 | 7.35 | 4.11 | |
| C3 | 3.58 | 1.01 | 3.55 | 4.21 | 1.01 | |
| i C4 | 1.72 | 0.28 | 0.71 | 0.74 | 0.76 | |
| n C4 | — | 0.24 | 1.45 | 2.07 | 0.49 | |
| i C5 | 0.50 | 0.13 | 0.64 | 0.53 | 0.43 | |
| n C5— | 0.08 | 0.68 | 0.95 | 0.21 | ||
| C6s— | 0.14 | 1.09 | 1.92 | 1.16 | ||
| C7+— | 0.82 | 8.21 | 22.57 | 56.40 | ||
| Solution GOR (Rs) (SCF/STB) | ∞ | 69,000 | 5965 | 1465 | 320 | |
| Vaporized Oil Ratio (Rv) (STB/MMSCF) | 0 | 15 | 165 | 680 | 3125 | |
| γAPI —gravity | 65.0 | 48.5 | 36.7 | 23.6 | ||
| M7+— | 132 | 184 | 240 | 274 | ||
| γ7+ | — | 0.750 | 0.816 | 0.864 | 0.920 |
See Also
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Petroleum Industry / Upstream / Subsurface E&P Disciplines / Petroleum Geology / Petroleum Reservoir Fluids
References
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