Dempsey 12
Status not reported Oil well
| API number | 12-121-01073 |
|---|---|
| Operator | Lain Oil & Gas Co |
| County | Marion, Illinois |
| Permitted | 1940-04-20 |
| Completed | 1940-05-16 |
| Depth | 3,416 ft |
| Surface location | 38.566036, -89.023801 · 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.