Home › South Dakota › Custer
Helms 1 Coffing
Plugged Oil well
| API number | 40-033-05015 |
|---|---|
| Permit number | 121 |
| Operator | Thomas L. Sunde |
| County | Custer, South Dakota |
| Field | Barker Dome |
| Permitted | 1955-04-08 |
| Spudded | 1955-05-02 |
| Completed | 1955-07-17 |
| Plugged | 2025-09-17 |
| Depth | 1,421 ft |
| Surface location | 43.489547, -103.869494 · wells within 1 mile |
| State record | South Dakota Department of Agriculture and Natural Resources, Geological Survey Program ↗ |
| Data as of | 2026-10-01 |
From South Dakota Department of Agriculture and Natural Resources, Geological Survey Program public records. Verify with the state before relying on this information.