Ansbro Petroleum
Operator of record for 18 catalogued wells across 5 states. Every well below links to its full registry page.
Filed as: ANSBRO PETROLEUM COMPANY · ANSBRO PETROLEUM COMPANY, LLC · Ansbro Petroleum Co LLC · Ansbro Petroleum Company LLC · …
At a glance
Ansbro Petroleum is the operator of record for 18 catalogued U.S. oil & gas wells in 5 states. None is listed as active, 7 (39%) are plugged & abandoned. Its largest concentration is in North Dakota, with 9 wells (50% of its portfolio).
Wells operated
18
Active
0
Plugged
7
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| North Dakota | 9 |
| New York | 4 |
| California | 2 |
| Wyoming | 2 |
| Utah | 1 |
Well mix
- Oil wells
- 11
- Gas wells
- 2
- Shut-in
- 0
- Active share
- 0%
Is this your company?
Claim Ansbro Petroleum to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Ansbro Petroleum operate?
Ansbro Petroleum's catalogued wells are spread across 5 states: North Dakota (9), New York (4), California (2), Wyoming (2) and Utah (1). Its 9 North Dakota wells are 0.0% 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 Ansbro Petroleum’s wells are active, plugged or orphaned?
0% of Ansbro Petroleum's catalogued wells are active, 29 percentage points below the national share of 29%. 39% are plugged & abandoned, against 47% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Ansbro Petroleum operate?
By product class, 11 (61%) are oil wells and 2 (11%) gas wells; nationally the shares are 43% and 17%. The deepest of its wells with a published depth is Hadsell Ranch 12-34 in Fremont, WY at 13,903 ft. The wells listed below sit in Fremont (WY), Sweetwater (WY), Burke (ND), Renville (ND), Cayuga (NY) and Tompkins (NY) and other counties. State filings spell the name 5 ways; WellCensus merges exact-normalized spellings only, so subsidiaries and affiliates keep their own pages.
Notable wells operated by Ansbro Petroleum
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Hadsell Ranch 12-34 | 49-013-22548 | Plugged & abandoned | Gas | Fremont, WY | Ansbro Petroleum Company | 13,903 ft |
| Stratton Hollow 4-6 | 49-037-25745 | Plugged & abandoned | Gas | Sweetwater, WY | Ansbro Petroleum Company | 13,573 ft |
| Durward 24-13 | 33-013-01334 | Plugged & abandoned | Oil | Burke, ND | Ansbro Petroleum Company, LLC | 7,775 ft |
| Culver State 11-16 | 33-075-01344 | Plugged & abandoned | Oil | Renville, ND | Ansbro Petroleum Company, LLC | 5,600 ft |
| Willet Cotton-Hanlon 1 | 31-011-23984 | Other status | Other type | Cayuga, NY | Ansbro Petroleum Company LLC | 0 ft |
| Willet Dairy 1 | 31-109-23946 | Other status | Other type | Tompkins, NY | Ansbro Petroleum Company LLC | 0 ft |
| Hardie D 1 | 31-109-23948 | Other status | Other type | Tompkins, NY | Ansbro Petroleum Company LLC | 0 ft |
| State 1-29 | 33-007-01590 | Other status | Oil | Billings, ND | Ansbro Petroleum Company, LLC | 0 ft |
| Gresz 14-35h | 33-007-01567 | Other status | Oil | Billings, ND | Ansbro Petroleum Company, LLC | 0 ft |
| Polensky 11-14h | 33-025-00594 | Other status | Oil | Dunn, ND | Ansbro Petroleum Company, LLC | 0 ft |
| Willet Hargett 1 | 31-011-23986 | Other status | Other type | Cayuga, NY | Ansbro Petroleum Company LLC | 0 ft |
| Masters 44-34h | 33-025-00592 | Other status | Oil | Dunn, ND | Ansbro Petroleum Company, LLC | 0 ft |
Deepest first where depth is published. See all 18 wells →
Frequently asked questions
How many wells does Ansbro Petroleum operate?
Ansbro Petroleum is the operator of record for 18 catalogued oil & gas wells, with the largest concentration in North Dakota (9). Only wells in states WellCensus has ingested are counted.
How many of Ansbro Petroleum's wells are still active?
0 of Ansbro Petroleum's catalogued wells are active; 7 are plugged & abandoned.
In which states does Ansbro Petroleum operate wells?
Ansbro Petroleum is the operator of record for wells in North Dakota (9), New York (4), California (2), Wyoming (2) and Utah (1).
Does Ansbro Petroleum operate mostly oil or gas wells?
11 of Ansbro Petroleum's catalogued wells are oil wells and 2 are gas wells; the rest are injection, service or unclassified wells.
What is Ansbro Petroleum's deepest well?
Among wells with a published depth, Hadsell Ranch 12-34 in Fremont, WY is the deepest at 13,903 ft.
Where Ansbro Petroleum's wells are
- Oil & gas wells in North Dakota· 9 operated by Ansbro Petroleum
- Oil & gas wells in New York· 4 operated by Ansbro Petroleum
- Oil & gas wells in California· 2 operated by Ansbro Petroleum
- Oil & gas wells in Wyoming· 2 operated by Ansbro Petroleum
- Oil & gas wells in Utah· 1 operated by Ansbro Petroleum
- Largest U.S. well operators
- All well operators
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, “Ansbro Petroleum — well portfolio”, https://wellcensus.com/operators/ansbro-petroleum-6790 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).