| AOGCC Pool Statistics | Prudhoe Bay Unit, Lisburne Oil Pool |
| Permitted Wells in Field: | |||||
| Type Well | Status | 2004 | 2003 | 2002 | 2001 | 2000 |
| Development | New | 9 | 12 | 17 | 19 | 8 |
| Sidetrack | 62 | 62 | 58 | 67 | 67 | |
| Multilateral | 18 | 10 | 14 | 3 | 4 | |
| Service | New | 12 | 7 | 17 | 6 | 1 |
| Sidetrack | 8 | 3 | 1 | 8 | 7 | |
| Multilateral | 0 | 0 | 0 | 0 | 0 | |
| Exploration | New | 0 | 0 | 1 | 0 | 0 |
| Sidetrack | 0 | 0 | 0 | 0 | 0 | |
| Total | 109 | 94 | 108 | 103 | 87 |
| Reservoir Properties: | ||||||||
| Description | 2004 |
2003 |
2002 |
2001 |
2000 |
| Reference Datum - ft. below sea level | 8900 |
8900 |
8900 |
8900 |
8900 |
| Temperature - ° F | 183
|
183
|
183
|
183
|
183
|
| Porosity - % | 10
|
10
|
10
|
10
|
10
|
| Permeability - md | .1-2
|
.1-2 | .1-2
|
.1-2
|
.1-2
|
| Swi - % | 20-40
|
20-40
|
20-40
|
20-40
|
20-40
|
| Oil Viscosity @ Orig. Press. cp | .9
|
.9 | .7
|
.7
|
.7
|
| Oil Viscosity @ Sat. Press. cp | 0 |
0 |
0 |
0 |
0 |
| Orig. Press. - psi | 4490 |
4490 |
4490 |
4490 |
4490 |
| Bubble Point - psi | 4300 |
4300 |
4300 |
4300 |
4300 |
| Current Reservoir Press. - psi | 1400-3700 |
2500-4200 |
1500-3600 |
1500-3600 |
1500-3600 |
| Oil Gravity - ° API | 27 |
27 |
27 |
27 |
27 |
| Gas Specific Gravity (Air = 1.0) | .72 |
.72 |
.72 |
.72 |
.72 |
| Gross Pay - ft. | 0-2000 |
0-2000 |
0-2000 |
0-2000 |
0-2000 |
| Net Pay - ft. | 0-250 |
0-250 |
0-250 |
0-200 |
0-250 |
| Orig. FVF - RB/STB | 1.385 |
1.385 |
1.385 |
1.385 |
1.385 |
| Bubble Point FVF - RB/STB | 0 |
0 |
0 |
0 |
0 |
| Orig. GOR - SCF/STB | 830 |
830 |
830 |
830 |
830 |
| GOR (current yr.) - SCF/STB | 17073 |
20013 |
20796 |
18828 |
16336 |
| References / Comments |