Unioil
Operator of record for 102 catalogued wells across 3 states. Every well below links to its full registry page.
At a glance
Unioil is the operator of record for 102 catalogued U.S. oil & gas wells in 3 states. None is listed as active, 49 (48%) are plugged & abandoned. Its largest concentration is in Colorado, with 84 wells (82% of its portfolio).
Wells operated
102
Active
0
Plugged
49
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Colorado | 84 |
| Wyoming | 16 |
| Michigan | 2 |
Well mix
- Oil wells
- 29
- Gas wells
- 2
- Shut-in
- 0
- Active share
- 0%
Is this your company?
Claim Unioil to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Unioil operate?
Unioil's catalogued wells are spread across 3 states: Colorado (84), Wyoming (16) and Michigan (2). Its 84 Colorado wells are 0.1% of the 124,327 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 Unioil’s wells are active, plugged or orphaned?
0% of Unioil's catalogued wells are active, 29 percentage points below the national share of 29%. 48% are plugged & abandoned, against 47% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Unioil operate?
By product class, 29 (28%) are oil wells and 2 (2%) gas wells; nationally the shares are 43% and 17%. The deepest of its wells with a published depth is State 1 in Laramie, WY at 8,970 ft. The wells listed below sit in Laramie (WY), Larimer (CO) and Weld (CO).
Notable wells operated by Unioil
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| State 1 | 49-021-20318 | Plugged & abandoned | Oil | Laramie, WY | Unioil | 8,970 ft |
| 16-H 1-18 | 49-021-20325 | Plugged & abandoned | Oil | Laramie, WY | Unioil | 8,931 ft |
| South Prince 1 | 49-021-20294 | Plugged & abandoned | Oil | Laramie, WY | Unioil | 8,827 ft |
| Horst 1 | 49-021-20316 | Plugged & abandoned | Oil | Laramie, WY | Unioil | 8,750 ft |
| 1 Rodenberger | 05-069-06073 | Plugged & abandoned | Oil | Larimer, CO | Unioil | 8,662 ft |
| Hillsdale North 1 | 49-021-20317 | Plugged & abandoned | Oil | Laramie, WY | Unioil | 8,595 ft |
| South Prince 2 | 49-021-20326 | Plugged & abandoned | Oil | Laramie, WY | Unioil | 8,360 ft |
| 1 Porter Creek | 05-123-11005 | Plugged & abandoned | Other type | Weld, CO | Unioil | 8,210 ft |
| North Fork 1-A | 49-021-20341 | Plugged & abandoned | Oil | Laramie, WY | Unioil | 8,116 ft |
| North Herford Fee 1 | 49-021-20282 | Plugged & abandoned | Oil | Laramie, WY | Unioil | 8,100 ft |
| Antelope Draw 1 | 49-021-20288 | Plugged & abandoned | Oil | Laramie, WY | Unioil | 7,980 ft |
| Lindberg Sw 1 | 49-021-20276 | Plugged & abandoned | Oil | Laramie, WY | Unioil | 7,859 ft |
Deepest first where depth is published. See all 102 wells →
Frequently asked questions
How many wells does Unioil operate?
Unioil is the operator of record for 102 catalogued oil & gas wells, with the largest concentration in Colorado (84). Only wells in states WellCensus has ingested are counted.
How many of Unioil's wells are still active?
0 of Unioil's catalogued wells are active; 49 are plugged & abandoned.
In which states does Unioil operate wells?
Unioil is the operator of record for wells in Colorado (84), Wyoming (16) and Michigan (2).
Does Unioil operate mostly oil or gas wells?
29 of Unioil's catalogued wells are oil wells and 2 are gas wells; the rest are injection, service or unclassified wells.
What is Unioil's deepest well?
Among wells with a published depth, State 1 in Laramie, WY is the deepest at 8,970 ft.
Where Unioil'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, “Unioil — well portfolio”, https://wellcensus.com/operators/unioil-4620 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).