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Statistical Methods for Estimating Petroleum Resources
III. Statistics of the Play
A. Play area:
mi.
2 or km
2
Play area explored:
Play producing:
Play volume:
mi.
3 or km
3
Play volume explored:
Play volume producing:
B. Reservoir data:
Oil
Gas
Minimum Average Maximum Minimum Average Maximum
Pool area, ha
Net pay, m
Porosity
Water
saturation
Depth, m
Recovery
factor
C. Hydrocarbon volume (oil, 10
6 m
3 or MMbbls; gas, 10
6 m
3 or Bcf or Tcf):
In-place oil volume:
In-place gas volume:
Primary oil reserve:
Primary gas reserve:
Enhanced oil reserve:
Enhanced gas reserve:
Cumulative oil production:
Cumulative gas production:
D. Drilling history:
Number of wells penetrating the play:
Number of exploratory wells:
Number of exploratory wells interpreted as true test wells:
Number of development wells:
Mean recurrence time for a dry well:
Mean recurrence time for an oil well:
Mean recurrence time for an oil and gas well:
Exploration risk:
Ratio of producing area/play area: