Herald Unit 21-W
Plugged Injection well
| API number | 12-193-06358-0100 |
|---|---|
| Operator | Humble Oil & Refining Company |
| County | White, Illinois |
| Permitted | 1962-07-09 |
| Completed | 1962-08-30 |
| Depth | 2,701 ft |
| Surface location | 37.959851, -88.196278 · 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.