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21 Nov 2024
1C, 2C, and 3C
Classifications for petroleum resource estimates, indicating increasing uncertainty from the most conservative (1C) to the most optimistic (3C).
1P or proved reserves
Quantity of oil that can be estimated with reasonable certainty to be commercially recoverable from known reservoirs under current conditions.
2P
Sum of proved and probable reserves, representing the best estimate scenario.
3P
Sum of proved, probable, and possible reserves, representing the high estimate scenario.