Part of total Hydrocarbon In Place (HCIP) in petroleum reservoir which can be recovered to the surface under specific FDP.
It comprises Oil comprises Oil Reserves (OR), also called recoverable oilcalled Recoverable Oil, and Gas Reserves (GR), also called recoverable gas Recoverable Gas.
The volumetric value of HCR in NTP conditions is given by STHCR.
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[ Oil Reserves (OR) ] [ Gas Reserves (GR) ]