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The percentage which recoverable reserves STHCR constitute of the current STHCIP is called called Estimated Ultimate Recovery Factor (EURF) (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 concepts of current Hydrocarbon In Place (HCIP) and Hydrocarbon Reserves depend on the parameters of FDP based on recovery method, recovery duration, surface logistics and economics.
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