U.S. Geological Survey Open-File Report 03-040
Version 1.0
Tables 25-26
Table 25. Probability distribution of volumetric parameters for oil or gas in the Beaufortian Lower Jurassic Topset Play.
|
Attribute |
Units |
LTP* |
F50 |
F05 |
Max |
|
|
Net Reservoir Thickness |
feet |
15 |
30 |
60 |
100 |
|
|
Area of Closure |
1000 acres |
3 |
4 |
8 |
20 |
|
|
Trap Fill |
percent |
50 |
75 |
99 |
100 |
|
|
Porosity |
percent |
15 |
18 |
20 |
22 |
|
|
Porosity-Water Saturation Product |
percent |
8 |
||||
|
Hydrocarbon Pore Volume |
percent |
7 |
10 |
12 |
14 |
|
|
Min |
F50 |
F05 |
Max |
|||
|
Trap Depth (oil) |
1000 feet |
3 |
5 |
8 |
14 |
|
|
Trap Depth (gas) |
3 |
8 |
13 |
17 |
||
|
Number of Prospects |
number |
15 |
40 |
65 |
90 |
|
|
Total Play Area |
million acres |
9.3 |
*LTP is lower truncation point for input distribution (see Scheunemeyer, this volume).
Table 26. Probability of occurrence for play and prospect in the Beaufortian Lower Jurassic Topset Play.
|
Play Attributes |
|||
|
Charge (C) |
1 |
||
|
Trap (T) |
0.9 |
||
|
Timing (F) |
1 |
||
|
Play Probability (CxTxF) |
0.9 |
||
|
Prospect Attributes |
|||
|
Charge (c) |
0.7 |
||
|
Trap (t) |
0.2 |
||
|
Timing (f) |
1 |
||
|
Prospect Probability (CxTxF) |
0.14 |
||
|
Play Probability x Prospect Probability |
0.126 |
||
|
Fraction of Accumulations That Are Oil |
0.5 |