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titleBy reserves uncertainty (SPE)


2P = Proven P90 + Possible P50
1P = Proven P90Probable P50Possible P10
Proven developed (PD)Proven Undeveloped (PUD)


see also Russian Reserves  Uncertainty Categories



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titleBy recovery cost


ConventionalUnconventional
GasCondensate
OilHeavy OilShale GasShale OilBitumen


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Petroleum Industry / Upstream / Subsurface E&P Disciplines / Petroleum Geology /  Petroleum Reservoir / Hydrocarbon Reserves

[ Russian Reserves Reserves  Uncertainty Categories ]


References

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https://www.spe.org/industry/reserves.php

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