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< 5 million
Panel
Giant
Expand
titleBy recoverable volume
Very SmallSmallMedium
Super-Giant
BigGiant
MediumSmall> 5 billion bbl> 500 million bbl> 50 million bbl> 5 million bbl
Super-Giant
< 7 mln bbl7 ÷ 70 mln bbl70 ÷ 200 mln bbl200 ÷ 700 mln bbl700 ÷ 2,000 mln bbl> 2,000 mln bbl
Panel
Expand
titleBy reserves uncertainty (SPE)
2P = Proven P90 + Probable P50
1P = Proven P90Probable P50Possible P10
Proven developed (PD)Proven Undeveloped (PUD)


see also Russian Hydrocarbon Reserves Uncertainty Categories

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