Economics and the 1995 National Assessment of U.S. Oil and Gas
Resources
Emil D. Attanasi
U. S. Geological Survey Open-File Report 95-75-M
Table A-4.-- Conventional field-size class definitions.
Oil field size |
Gas field size |
|
Class |
(Millions barrels) |
(Billions cubic feet) |
| 1 | 0.03125 - 0.0625 | 0.1875 - 0.375 |
| 2 | 0.0625 - 0.125 | 0.375 - 0.750 |
| 3 | 0.125 - 0.25 | 0.75 - 1.50 |
| 4 | 0.25 - 0.5 | 1.50 - 3 |
| 5 | 0.5 - 1 | 3.00 - 6.00 |
| 6 | 1 - 2 | 6 - 12 |
| 7 | 2 - 4 | 12 - 24 |
| 8 | 4 - 8 | 24 - 48 |
| 9 | 8 - 16 | 48 - 96 |
| 10 | 16 - 32 | 96 - 192 |
| 11 | 32 - 64 | 192 - 384 |
| 12 | 64 - 128 | 384 - 768 |
| 13 | 128 - 256 | 768 - 1536 |
| 14 | 256 - 512 | 1536 - 3072 |
| 15 | 512 -1024 | 3072 - 6144 |
| 16 | 1024 - 2048 | 6144 - 12288 |
| 17 | 2048 - 4096 | 12288 - 24576 |
| 18 | 4096 - 8192 | 24576 - 49152 |
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