Volumetric value of current (remaining) Hydrocarbon Reserves (HCR) recalculated to NTP conditions:

STHCR = STOR + STGR


Before the anthropogenic invasion the current and initial volumes of recoverable Petroleum Hydrocarbons  are the same:  STHCR = STHCIR


See Also


Petroleum Industry / Upstream / Subsurface E&P Disciplines / Petroleum Geology /  Petroleum Reservoir / Hydrocarbon In Place (HCIP) / Hydrocarbon Reserves (HCR)

[Stock-Tank Oil In-Place (STOIP) ] [ Stock-Tank Gas In-Place (STGIP) ]