Armstrong Operating
Operator of record for 105 catalogued wells across 2 states. Every well below links to its full registry page.
Filed as: ARMSTRONG OPERATING, INC. · Armstrong Operating, Inc.
At a glance
Armstrong Operating is the operator of record for 105 catalogued U.S. oil & gas wells in 2 states. 10 (10%) are active, 86 (82%) plugged & abandoned and 1 flagged as orphaned. Its largest concentration is in North Dakota, with 76 wells (72% of its portfolio).
Wells operated
105
Active
10
Plugged
86
Orphaned
1
Portfolio by state
| State | Wells |
|---|---|
| North Dakota | 76 |
| Montana | 29 |
Well mix
- Oil wells
- 81
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 10%
Is this your company?
Claim Armstrong Operating to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Armstrong Operating operate?
Armstrong Operating's catalogued wells are spread across 2 states: North Dakota (76) and Montana (29). Its 76 North Dakota wells are 0.2% of the 43,680 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 Armstrong Operating’s wells are active, plugged or orphaned?
10% of Armstrong Operating's catalogued wells are active, 19 percentage points below the national share of 29%. 82% are plugged & abandoned, against 47% nationally. 1 wells filed under this name are flagged as orphaned — unplugged, with no operator able to plug them.
What kinds of wells does Armstrong Operating operate?
By product class, 81 (77%) 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 Allan 17-1h in Dunn, ND at 18,827 ft. The wells listed below sit in Dunn (ND), Billings (ND) and Roosevelt (MT). State filings spell the name 2 ways; WellCensus merges exact-normalized spellings only, so subsidiaries and affiliates keep their own pages.
Notable wells operated by Armstrong Operating
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Allan 17-1h | 33-025-00748 | Plugged & abandoned | Oil | Dunn, ND | Armstrong Operating, Inc. | 18,827 ft |
| Wolberg 1 Wsw | 33-025-00120 | Plugged & abandoned | Other type | Dunn, ND | Armstrong Operating, Inc. | 14,309 ft |
| Thomas Cook 1-24 | 33-025-00170 | Plugged & abandoned | Oil | Dunn, ND | Armstrong Operating, Inc. | 13,500 ft |
| Ruth Leete 1-25 Swd | 33-025-00183 | Plugged & abandoned | Injection | Dunn, ND | Armstrong Operating, Inc. | 13,500 ft |
| USA-Perow 14-8h | 33-007-01207 | Plugged & abandoned | Oil | Billings, ND | Armstrong Operating, Inc. | 13,491 ft |
| Karla 21-16h | 33-007-01198 | Plugged & abandoned | Oil | Billings, ND | Armstrong Operating, Inc. | 13,430 ft |
| Schmidt 32-22 | 33-007-01360 | Plugged & abandoned | Oil | Billings, ND | Armstrong Operating, Inc. | 13,370 ft |
| Rockies 23-43 | 33-007-01405 | Plugged & abandoned | Oil | Billings, ND | Armstrong Operating, Inc. | 13,250 ft |
| Volesky 18-1 | 33-007-01369 | Plugged & abandoned | Oil | Billings, ND | Armstrong Operating, Inc. | 13,140 ft |
| S. E. Russian Creek 33-17 | 33-025-00474 | Plugged & abandoned | Oil | Dunn, ND | Armstrong Operating, Inc. | 12,700 ft |
| Peterson 2-13 | 25-085-21693 | Orphaned | Oil | Roosevelt, MT | Armstrong Operating, Inc. | 12,650 ft |
| S. E. Russian Creek 14-16 | 33-025-00477 | Active | Oil | Dunn, ND | Armstrong Operating, Inc. | 12,621 ft |
Deepest first where depth is published. See all 105 wells →
Frequently asked questions
How many wells does Armstrong Operating operate?
Armstrong Operating is the operator of record for 105 catalogued oil & gas wells, with the largest concentration in North Dakota (76). Only wells in states WellCensus has ingested are counted.
How many of Armstrong Operating's wells are still active?
10 of Armstrong Operating's catalogued wells are active; 86 are plugged & abandoned and 1 are flagged as orphaned.
In which states does Armstrong Operating operate wells?
Armstrong Operating is the operator of record for wells in North Dakota (76) and Montana (29).
Does Armstrong Operating operate mostly oil or gas wells?
81 of Armstrong Operating's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Armstrong Operating's deepest well?
Among wells with a published depth, Allan 17-1h in Dunn, ND is the deepest at 18,827 ft.
Where Armstrong Operating'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, “Armstrong Operating — well portfolio”, https://wellcensus.com/operators/armstrong-operating-2525 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).