Fact Sheet 045–02

Figure 4. Schematic graph
illustrating petroleum volumes and probabilities. Curves represent categories
of oil assessment. How one reads this graph is illustrated by the blue and orange
lines projected to the curve for economically recoverable oil—in this example,
there is a 95% chance (probability F_{95} ) of at least volume V1 of
economically recoverable oil, and there is a 5% chance (probability F_{05})
of at least volume V_{2} of economically recoverable oil.

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