Hadley Herbert D
Operator of record for 8 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Hadley Herbert D is the operator of record for 8 catalogued U.S. oil & gas wells in 1 state. None is listed as active, 8 (100%) are plugged & abandoned. Its largest concentration is in Montana, with 8 wells (100% of its portfolio).
Wells operated
8
Active
0
Plugged
8
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Montana | 8 |
Well mix
- Oil wells
- 0
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 0%
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Claim your operator profileWhere does Hadley Herbert D operate?
Hadley Herbert D's catalogued wells are spread across 1 state: Montana (8). Its 8 Montana wells are 0.0% of the 42,011 catalogued in that state — its largest share of any state. Counts cover only states whose registries WellCensus has ingested with operator names; wells in Nebraska and Texas (location indexes) and in states without a registry ingest are not yet attributed to any operator.
How many of Hadley Herbert D’s wells are active, plugged or orphaned?
0% of Hadley Herbert D's catalogued wells are active, 29 percentage points below the national share of 29%. 100% are plugged & abandoned, against 47% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Hadley Herbert D operate?
By product class, 0 (0%) are oil wells and 0 (0%) gas wells; nationally the shares are 43% and 17%. The deepest of its wells with a published depth is Gaarder 1 in Wheatland, MT at 5,144 ft. The wells listed below sit in Wheatland (MT), Golden Valley (MT), Petroleum (MT), Musselshell (MT) and Yellowstone (MT).
Notable wells operated by Hadley Herbert D
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Gaarder 1 | 25-107-05002 | Plugged & abandoned | Other type | Wheatland, MT | Hadley, Herbert D. | 5,144 ft |
| Gugler 1 | 25-037-05012 | Plugged & abandoned | Other type | Golden Valley, MT | Hadley, Herbert D. | 3,971 ft |
| Government 1 | 25-069-05059 | Plugged & abandoned | Other type | Petroleum, MT | Hadley, Herbert D. | 3,003 ft |
| U C L I 1 | 25-069-21035 | Plugged & abandoned | Other type | Petroleum, MT | Hadley, Herbert D. | 2,345 ft |
| U C L I 2 | 25-069-21045 | Plugged & abandoned | Other type | Petroleum, MT | Hadley, Herbert D. | 2,298 ft |
| Federal M-15<>1 | 25-037-21041 | Plugged & abandoned | Other type | Golden Valley, MT | Hadley, Herbert D. | 2,213 ft |
| Holman 1 | 25-065-21275 | Plugged & abandoned | Other type | Musselshell, MT | Hadley, Herbert D. | 1,288 ft |
| Spaeth 1 | 25-111-21188 | Plugged & abandoned | Other type | Yellowstone, MT | Hadley, Herbert D. | 850 ft |
Deepest first where depth is published. See all 8 wells →
Frequently asked questions
How many wells does Hadley Herbert D operate?
Hadley Herbert D is the operator of record for 8 catalogued oil & gas wells, with the largest concentration in Montana (8). Only wells in states WellCensus has ingested are counted.
How many of Hadley Herbert D's wells are still active?
0 of Hadley Herbert D's catalogued wells are active; 8 are plugged & abandoned.
In which states does Hadley Herbert D operate wells?
Hadley Herbert D is the operator of record for wells in Montana (8).
Does Hadley Herbert D operate mostly oil or gas wells?
0 of Hadley Herbert D's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Hadley Herbert D's deepest well?
Among wells with a published depth, Gaarder 1 in Wheatland, MT is the deepest at 5,144 ft.
Where Hadley Herbert D's wells are
About this data
Source: State oil & gas regulator registries (operator of record as filed, exact-normalized across states) plus the USGS United States Documented Orphaned Well Database (2026), as published October 10, 2026 — WellCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.
Cite as: WellCensus, “Hadley Herbert D — well portfolio”, https://wellcensus.com/operators/hadley-herbert-d-127627 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).