Markwell 12
Status not reported Oil well
| API number | 12-023-25698 |
|---|---|
| Operator | Dillier & Knierim Co., Inc. |
| County | Clark, Illinois |
| Permitted | 1990-09-05 |
| Completed | 1991-01-16 |
| Depth | 351 ft |
| Surface location | 39.436893, -87.975022 · 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.