A part of Proven Developed Reserves (PD) that is currently not producing for some reasons (such as commercial, logistical, technical, dispute or regulatory reasons etc).
See Also
Petroleum Industry / Upstream / Subsurface E&P Disciplines / Petroleum Geology / Petroleum Reservoir / Hydrocarbon Reserves / Hydrocarbon Reserves Classification / Hydrocarbon Reserves Uncertainty / Proven P90 / Proven Developed Reserves (PD)