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Madison A-1
Plugged Dry hole well
| API number | 12-199-01207 |
|---|---|
| Operator | Shell Oil Company |
| County | Williamson, Illinois |
| Permitted | 1942-03-09 |
| Completed | 1942-04-01 |
| Depth | 3,136 ft |
| Surface location | 37.845037, -88.867652 · wells within 1 mile |
| State record | Illinois State Geological Survey ↗ |
| Data as of | 2026-10-17 |
From Illinois State Geological Survey public records. Verify with the state before relying on this information.