Oien Oil
Operator of record for 31 catalogued wells across 2 states. Every well below links to its full registry page.
Filed as: OIEN OIL CORPORATION · Oien Oil
At a glance
Oien Oil is the operator of record for 31 catalogued U.S. oil & gas wells in 2 states. None is listed as active, 30 (97%) are plugged & abandoned. Its largest concentration is in Montana, with 30 wells (97% of its portfolio).
Wells operated
31
Active
0
Plugged
30
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Montana | 30 |
| Wyoming | 1 |
Well mix
- Oil wells
- 9
- Gas wells
- 2
- Shut-in
- 0
- Active share
- 0%
Is this your company?
Claim Oien Oil to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Oien Oil operate?
Oien Oil's catalogued wells are spread across 2 states: Montana (30) and Wyoming (1). Its 30 Montana wells are 0.1% 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 Oien Oil’s wells are active, plugged or orphaned?
0% of Oien Oil's catalogued wells are active, 29 percentage points below the national share of 29%. 97% are plugged & abandoned, against 47% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Oien Oil operate?
By product class, 9 (29%) are oil wells and 2 (6%) gas wells; nationally the shares are 43% and 17%. The deepest of its wells with a published depth is Federal W-032647 1 in Sheridan, WY at 6,700 ft. The wells listed below sit in Sheridan (WY), Powder River (MT), Rosebud (MT), Golden Valley (MT), Valley (MT) and Musselshell (MT) and other counties. 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 Oien Oil
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Federal W-032647 1 | 49-033-05013 | Plugged & abandoned | Oil | Sheridan, WY | Oien Oil Corporation | 6,700 ft |
| Government 1 | 25-075-05055 | Plugged & abandoned | Other type | Powder River, MT | Oien Oil | 5,762 ft |
| Estes 1 | 25-075-05059 | Plugged & abandoned | Other type | Powder River, MT | Oien Oil | 5,705 ft |
| Lockie 1 | 25-087-05121 | Plugged & abandoned | Other type | Rosebud, MT | Oien Oil | 5,323 ft |
| W. Johnson #1 | 25-037-05051 | Plugged & abandoned | Other type | Golden Valley, MT | Oien Oil | 5,035 ft |
| Sullivan 1 | 25-105-05072 | Plugged & abandoned | Other type | Valley, MT | Oien Oil | 5,012 ft |
| State 1 | 25-105-05066 | Plugged & abandoned | Other type | Valley, MT | Oien Oil | 4,690 ft |
| Pete Ringstv<>1 | 25-087-05445 | Plugged & abandoned | Other type | Rosebud, MT | Oien Oil | 4,345 ft |
| Barney et al 1 | 25-065-05487 | Plugged & abandoned | Other type | Musselshell, MT | Oien Oil | 3,850 ft |
| Hansen 1 | 25-051-05047 | Plugged & abandoned | Other type | Liberty, MT | Oien Oil | 3,319 ft |
| N. Petterson 1 | 25-051-05472 | Plugged & abandoned | Other type | Liberty, MT | Oien Oil | 3,120 ft |
| Farbo 1 | 25-101-07602 | Plugged & abandoned | Other type | Toole, MT | Oien Oil | 2,618 ft |
Deepest first where depth is published. See all 31 wells →
Frequently asked questions
How many wells does Oien Oil operate?
Oien Oil is the operator of record for 31 catalogued oil & gas wells, with the largest concentration in Montana (30). Only wells in states WellCensus has ingested are counted.
How many of Oien Oil's wells are still active?
0 of Oien Oil's catalogued wells are active; 30 are plugged & abandoned.
In which states does Oien Oil operate wells?
Oien Oil is the operator of record for wells in Montana (30) and Wyoming (1).
Does Oien Oil operate mostly oil or gas wells?
9 of Oien Oil's catalogued wells are oil wells and 2 are gas wells; the rest are injection, service or unclassified wells.
What is Oien Oil's deepest well?
Among wells with a published depth, Federal W-032647 1 in Sheridan, WY is the deepest at 6,700 ft.
Where Oien Oil'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, “Oien Oil — well portfolio”, https://wellcensus.com/operators/oien-oil-28214 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).