Friedrich Heirs (Triangle) 4
Plugged Oil well
| API number | 12-121-01026-0100 |
|---|---|
| Operator | Frontier Oil Co. |
| County | Marion, Illinois |
| Permitted | 1939-12-11 |
| Completed | 1940-02-06 |
| Depth | 2,499 ft |
| Surface location | 38.547805, -88.997426 · 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.