@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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| | Super-Giant | GiantMediumSmall | > 5 billion> 500 million> 50 million> 5 million< 5 million
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title | By uncertainty (SPE) |
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| 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) | complexityreserves uncertainty (SPE) |
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| Hydrocarbon Reserves Uncertainty |
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| Hydrocarbon Reserves Uncertainty |
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Conventional | Unconventional |
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Gas | Condensate
| Oil | Heavy Oil | Shale Gas | Shale Oil | Bitumen |
oil densitypetroleum density at surface |
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| crude oil crude heavy crude870 – 920 – > – – | < 10° |
* – with reference to air. |
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title | By petroleum mobility |
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| | > 100 md ÷ 10 | Gas | Gas condensate | Light oil | Oil | Heavy oil | Bitumen | where gray boxes mean:
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Reservoir-fluid combinations which are currently not exploited by Petroleum Industry |
and red boxes mean:
Unconventional reserves | 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 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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| Faulted | Compartmentalized
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title | By vertical homogeneity |
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title | By fault developemnt |
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| Faulted | Compartmentalized |
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| Anticline | Stratigraphic | Normal Fault | Thrust Fault |
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| Anticline Structure |
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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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| 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 Hydrocarbon Reserves Uncertainty Categories ][ Hydrocarbon Reserves Uncertainty ]
References
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https://www.spe.org/industry/reserves.php
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