Issues in focus
| Basin/Play | Area (square miles) | Average well spacing (wells per square mile) | Percent of area untested | Percent of area with potential | Average EUR (million barrels per well) | Number of potential wells | TRR (million barrels) |
|---|---|---|---|---|---|---|---|
| Western Gulf | |||||||
| Austin Chalk | 16,078 | 3 | 72 | 61 | 0.13 | 21,165 | 2,688 |
| Eagle Ford | 3,200 | 5 | 100 | 54 | 0.28 | 8,665 | 2,461 |
| Anadarko | |||||||
| Woodford | 3,120 | 6 | 100 | 88 | 0.02 | 16,375 | 393 |
| Permian | |||||||
| Avalon/Bone Springs | 1,313 | 4 | 100 | 78 | 0.39 | 4,085 | 1,593 |
| Spraberry | 1,085 | 6 | 99 | 72 | 0.11 | 4,636 | 510 |
| Rocky Mountain basins | |||||||
| Niobrara | 20,385 | 8 | 97 | 80 | 0.05 | 127,451 | 6,500 |
| Williston Bakkena | 6,522 | 2 | 77 | 97 | 0.55 | 9,767 | 5,372 |
| San Joaquin/Los Angeles | |||||||
| Monterey/Santos | 2,520 | 12 | 98 | 93 | 0.50 | 7,242 | 8,817 |
| Total tight oil | 219,729 | 33,226 | |||||
| aIncludes Sanish-Three Forks formation. | |||||||