Other Assessment Methods—An Overview
173
of the population follow a fractal distribution. Whether the remaining
members of the population follow the same distribution has yet to be
investigated.
Why does the fractal method yield estimates similar to those derived
by the superpopulation method? The explanation, as we have demonstrated using Q–Q plots, is that pool-size distributions can also be
described by a power normal distribution, which is identical to the
power function used by Lee and Lee (1994).
Table 7.4. Comparisons between the Estimates Derived by the
Superpopulation Approach and the Fractal Method
Pool rank
Discovered,
10
6 m
3
Predicted by
Superpopulation
approach
Fractal method
A. Leduc–Bashaw oil play
1
1 9 . 7 0
—
—
2
15.00
—
15.06
3
1 3 . 1 0
—
1 1 . 8 0
4
6 . 3 9
—
9 . 4 5
5
6 . 1 9
—
7 . 7 2
6
6 . 1 5
—
6 . 4 2
7
—
3 . 8 – 6 . 0
5 . 4 3
8
—
3 . 5 – 4 . 6
4 . 6 7
9
—
3 . 4 – 4 . 2
3 . 5 8
10
3.00
—
3.58
B. Slave Point complex reef–Cranberry gas play
1
14,260
—
—
2
—
8 1 1 3
8 8 3 8
3
—
5444
5971
4
—
4 0 5 1
4 3 2 9
5
—
3 2 1 8
3 3 2 5
6
—
2667
2678
7
2 2 7 6
—
2 2 4 3
8
—
2 0 3 5
1 9 4 0
9
—
1 8 3 3
1 7 6 1
10
—
1661
1561