Hartley 4-B
Status not reported Oil well
| API number | 12-025-26031 |
|---|---|
| Operator | Crest Oil Co., Inc. |
| County | Clay, Illinois |
| Permitted | 1979-08-22 |
| Completed | 1979-11-25 |
| Depth | 2,972 ft |
| Surface location | 38.701972, -88.310291 · 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.