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@wikipedia
By uncertainty (SPE)
2P = Proven P90 + Possible P50 |
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1P = Proven P90 | Probable P50 | Possible P10 |
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Proven developed (PD) | Proven Undeveloped (PUD) |
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By complexity
Conventional | Unconventional |
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Gas | Condensate
| Oil | Heavy Oil | Shale Gas | Shale Oil | Bitumen |
By oil density
| Light crude | Medium oil | Heavy crude | Extra heavy crude |
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kg/m3 | < 870 | 870 - 920 | 920 - 1000 | > 1000 |
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°API | > 31.1 | 22.3 - 31.1 | 10 - 22.3 | < 10 |
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By reservoir homogeneity
Matrix | Fissured | Fractured | Faulted | Compartmentalized |
See Also
Petroleum Industry / Upstream / Subsurface E&P Disciplines / Petroleum Geology
[ Russian Reserves Categories ]
References