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Markwell 1
Status not reported Oil well
| API number | 12-035-00105-0100 |
|---|---|
| Operator | Schaefer Oil Company |
| County | Cumberland, Illinois |
| Permitted | 1964-03-18 |
| Completed | 1964-04-17 |
| Depth | 2,712 ft |
| Surface location | 39.181646, -88.153196 · 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.