Tri State Oil
Operator of record for 10 catalogued wells across 5 states. Every well below links to its full registry page.
Filed as: TRI STATE OIL CO · TRI-STATE OIL CO · Tri State Oil · Tri State Oil Co.
At a glance
Tri State Oil is the operator of record for 10 catalogued U.S. oil & gas wells in 5 states. None is listed as active, 8 (80%) are plugged & abandoned. Its largest concentration is in Montana, with 6 wells (60% of its portfolio).
Wells operated
10
Active
0
Plugged
8
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Montana | 6 |
| California | 1 |
| Illinois | 1 |
| Kentucky | 1 |
| Michigan | 1 |
Well mix
- Oil wells
- 5
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 0%
Is this your company?
Claim Tri State Oil to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Tri State Oil operate?
Tri State Oil's catalogued wells are spread across 5 states: Montana (6), California (1), Illinois (1), Kentucky (1) and Michigan (1). Its 6 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 Tri State Oil’s wells are active, plugged or orphaned?
0% of Tri State Oil's catalogued wells are active, 29 percentage points below the national share of 29%. 80% are plugged & abandoned, against 47% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Tri State Oil operate?
By product class, 5 (50%) 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 Fitzpatrick, Arthur 1 in Clinton, MI at 2,647 ft. The wells listed below sit in Clinton (MI), Toole (MT), Daviess (KY), Clark (IL) and Orange (CA). State filings spell the name 4 ways; WellCensus merges exact-normalized spellings only, so subsidiaries and affiliates keep their own pages.
Notable wells operated by Tri State Oil
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Fitzpatrick, Arthur 1 | 21-037-28413 | Other status | Other type | Clinton, MI | Tri State Oil Co | 2,647 ft |
| Stannard-St 10 | 25-101-10472 | Plugged & abandoned | Oil | Toole, MT | Tri State Oil Co. | 1,500 ft |
| Stannard-St 4 | 25-101-10469 | Plugged & abandoned | Oil | Toole, MT | Tri State Oil Co. | 1,495 ft |
| Stannard-St 14 | 25-101-10475 | Plugged & abandoned | Other type | Toole, MT | Tri State Oil Co. | 1,480 ft |
| Stannard-St 8 | 25-101-10471 | Plugged & abandoned | Oil | Toole, MT | Tri State Oil Co. | 1,480 ft |
| Stannard-St 12 | 25-101-10473 | Plugged & abandoned | Oil | Toole, MT | Tri State Oil Co. | 1,479 ft |
| Murphy, L R 1 | KGS record 2006157 | Other status | Other type | Daviess, KY | Tri-State Oil Co | 1,475 ft |
| Stannard-St 7 | 25-101-10470 | Plugged & abandoned | Oil | Toole, MT | Tri State Oil Co. | 1,463 ft |
| Well API 12-023-03333 | 12-023-03333 | Plugged & abandoned | Other type | Clark, IL | Tri State Oil | 79 ft |
| Lease by Tri State Oil Co. 1 | 04-059-01265 | Plugged & abandoned | Other type | Orange, CA | Tri State Oil Co. | — |
Deepest first where depth is published. See all 10 wells →
Frequently asked questions
How many wells does Tri State Oil operate?
Tri State Oil is the operator of record for 10 catalogued oil & gas wells, with the largest concentration in Montana (6). Only wells in states WellCensus has ingested are counted.
How many of Tri State Oil's wells are still active?
0 of Tri State Oil's catalogued wells are active; 8 are plugged & abandoned.
In which states does Tri State Oil operate wells?
Tri State Oil is the operator of record for wells in Montana (6), California (1), Illinois (1), Kentucky (1) and Michigan (1).
Does Tri State Oil operate mostly oil or gas wells?
5 of Tri State Oil's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Tri State Oil's deepest well?
Among wells with a published depth, Fitzpatrick, Arthur 1 in Clinton, MI is the deepest at 2,647 ft.
Where Tri State Oil's wells are
- Oil & gas wells in Montana· 6 operated by Tri State Oil
- Oil & gas wells in California· 1 operated by Tri State Oil
- Oil & gas wells in Illinois· 1 operated by Tri State Oil
- Oil & gas wells in Kentucky· 1 operated by Tri State Oil
- Oil & gas wells in Michigan· 1 operated by Tri State Oil
- 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, “Tri State Oil — well portfolio”, https://wellcensus.com/operators/tri-state-oil-38003 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).