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Herndon 1A O'Leary
Plugged Dry hole well
| API number | 40-041-05002 |
|---|---|
| Permit number | 164 |
| Operator | Herndon Drilling Co. |
| County | Dewey, South Dakota |
| Permitted | 1955-10-08 |
| Spudded | 1955-10-03 |
| Plugged | 1955-10-21 |
| Depth | 5,147 ft |
| Surface location | 45.256610, -101.253810 · 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.