@wikipedia
Hydrocarbon Reserves Classification provides the primary insight into the size, uncertainty and structure of the Hydrocarbon Reserves.
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title | By recoverable volume |
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title | By reserves uncertainty (SPE) |
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2P = Proven P90 + Possible P50 | 1P = Proven P90 | Probable P50 | Possible P10 |
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Proven developed (PD) | Proven Undeveloped (PUD) | see also Russian Reserves Uncertainty Categories
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| Conventional | Unconventional |
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Gas | Condensate
| Oil | Heavy Oil | Shale Gas | Shale Oil | Bitumen | reserves uncertainty (SPE) |
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| Hydrocarbon Reserves Uncertainty |
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| Hydrocarbon Reserves Uncertainty |
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title | By petroleum density at surface |
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crude crude crude heavy crude870 – 920 – > – – < 10° | |
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title | By petroleum mobility |
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| Specific Gravity | API Gravity | High perm | Medium perm | Low perm | Tight (Shale) |
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fracAPI | > 100 md ÷ 10 Gas | < 0.7 | > 70° | Condensate | 0.7 ÷ 0.87 | > 45° | Light Oil | < 0.87 | > 31.1° | Medium Oil | 0.87 ÷ 0.92 | 22.3° ÷ 31.1° | Heavy Oil | 0.92 ÷ 1.0 | 10° ÷ 22.3° | Extra Heavy Oil (Bitumen) | > 1.0 | 4° ÷ 10° | Low viscous oil | < 1 |
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Medium viscous oil | 1 ÷ 10 |
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High viscous oil | 10 ÷ 100 |
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Extra high viscous oil | 100 ÷ 10,000 |
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Bitumen | > 10,000 |
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where box colours where box colors mean:
and the ranges of properties in the table are only tentatively define the category based on the industry statistics and conventions, which vary over history and locations. |
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title | By reservoir gas conditions |
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title | By water-oil relative mobility ratio |
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| Very Fast Oil | Fast Oil | Commensurable mobilitie of Oil and Water | Fast Water | Very Fast Water |
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<0.2 | 0.2 ÷ 0.75 | 0.75 ÷ 1.25 | 1.25 ÷ 5 | >5 |
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title | By rock quality (FZI) |
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| Very Poor | Poor | Medium | Good | Very Good |
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title | By aquifer type and strength |
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title | By reservoir homogeneity |
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title | By vertical homogeneity |
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title | By fault developemnt |
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| Anticline | Stratigraphic | Normal Fault | Thrust Fault |
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| Anticline Structure |
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| Stratigraphic Structure |
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| Stratigraphic Structure |
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| Normal Fault Structure |
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| Normal Fault Structure |
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| Thrust Fault Structure |
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See Also
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Petroleum Industry / Upstream / Subsurface E&P Disciplines / Petroleum Geology / Petroleum Reservoir / Hydrocarbon Reserves
[ Russian Reserves Hydrocarbon Reserves Uncertainty Categories ][ Hydrocarbon Reserves Uncertainty ]
References
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https://www.spe.org/industry/reserves.php
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