@wikipediaOR = Drainable Oil + Non-drainable oil
Synonym: Non-drainable Oil = Bypass Oil
Part of current Oil Reserves (OR) which is currently not moving towards producing wells:
OR = Drainable Oil + Non-drainable oil
The Non-drainable Oil is a result of deviation from the current Field Development Plan (FDP) or mistakes in FDP itself, for example, the overestimation of OR.
See Also
Petroleum Industry / Upstream / Subsurface E&P Disciplines / Petroleum Geology / Oil In Place (OIP)/ Oil Reserves (OR)
[ Hydrocarbon Reserves ] [ Gas reserves ]
[ Estimated Ultimate Oil Recovery (EUOR) ]
[ Drainable Oil ]