Part of current Hydrocarbon In Place (HCIP) which can be economically recovered to the surface under specific FDP by the end of its producing life.
It comprises:
| Oil Reserves (OR) | Gas Reserves (GR) |
|---|---|
| ( also called Recoverable Oil ) | ( also called Recoverable Gas ) |
including condensate from natural gas | including solution gas from oil |
The volumetric value of HCR in Hydrocarbon Reserves (HCR) in NTP conditions is given by STHCR:
STHCR = STOR + STGR
represented by two numbers: { Stock-Tank Oil Reserves (STOR) , Stock-Tank Gas Reserves(STGR) }
The maximum recoverable volume of Hydrocarbon Reserves (HCR) is called Estimated Ultimate Recovery but normally it explicitly refers to Estimated Ultimate Oil Recovery (EUOR) or Estimated Ultimate Gas Recovery (EUGR).
The percentage of Estimated Ultimate RecoveryThe percentage of recoverable Surface Tank Hydrocarbon Reserves (STHCR) taken from the total Surface Tank Hydrocarbon Initial In Place (STHCIIP) is called Estimated Ultimate Recovery Factor (EURF):
...
| anchor | 3VQI3 |
|---|---|
| alignment | left |
...
...
(don't get confused with Estimated Ultimate Recovery which is equivalent to STHCR).
Unlike Hydrocarbon Initial In Place (HCIIP), which is a geological category, the the concepts of current Hydrocarbon In Place and Estimated Ultimate Recover and current Hydrocarbon Reserves depend on the parameters of FDP based on recovery on FDP and Petroleum Production specifics (recovery method, recovery duration, surface logistics, market conditions and economics).
There are different ways of classifying the Hydrocarbon Reserves which provide the primary insight into the size, uncertainty and structure of the Hydrocarbon Reserves.
...