True Oil
Operator of record for 1,863 catalogued wells across 10 states. Every well below links to its full registry page.
Filed as: TRUE OIL CO · TRUE OIL CO. · TRUE OIL COMPANY · TRUE OIL LLC · …
At a glance
True Oil is the operator of record for 1,863 catalogued U.S. oil & gas wells in 10 states. 156 (8%) are active, 1,523 (82%) plugged & abandoned and 2 flagged as orphaned. Its largest concentration is in Wyoming, with 1,255 wells (67% of its portfolio).
Wells operated
1,863
Active
156
Plugged
1,523
Orphaned
2
Portfolio by state
| State | Wells |
|---|---|
| Wyoming | 1,255 |
| Montana | 364 |
| North Dakota | 122 |
| Colorado | 74 |
| Utah | 19 |
| Michigan | 18 |
| Kansas | 6 |
| Pennsylvania | 3 |
| New Mexico | 1 |
| New York | 1 |
Well mix
- Oil wells
- 1,249
- Gas wells
- 138
- Shut-in
- 54
- Active share
- 8%
Is this your company?
Claim True Oil to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does True Oil operate?
True Oil's catalogued wells are spread across 10 states: Wyoming (1,255), Montana (364), North Dakota (122), Colorado (74) and Utah (19) and 5 more. Its 1,255 Wyoming wells are 1.0% of the 129,957 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 True Oil’s wells are active, plugged or orphaned?
8% of True Oil's catalogued wells are active, 20 percentage points below the national share of 29%. 82% are plugged & abandoned, against 47% nationally. 54 wells (3%) are shut-in — unplugged but idle. 2 wells filed under this name are flagged as orphaned — unplugged, with no operator able to plug them.
What kinds of wells does True Oil operate?
By product class, 1,249 (67%) are oil wells and 138 (7%) gas wells; nationally the shares are 43% and 17%. The deepest of its wells with a published depth is Slash Federal 11-4 4-9 TF1H in Mckenzie, ND at 21,519 ft. The wells listed below sit in Mckenzie (ND) and Richland (MT). State filings spell the name 8 ways; WellCensus merges exact-normalized spellings only, so subsidiaries and affiliates keep their own pages.
Notable wells operated by True Oil
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Slash Federal 11-4 4-9 TF1H | 33-053-10228 | Active | Oil | Mckenzie, ND | True Oil LLC | 21,519 ft |
| Slash Federal 21-4 4-9 TF2H | 33-053-10229 | Active | Oil | Mckenzie, ND | True Oil LLC | 21,505 ft |
| Anvick 41-3 3-10 B4H | 25-083-23432 | Active | Oil | Richland, MT | True Oil LLC | 21,134 ft |
| Anvick 11-3 3-10 B1H | 25-083-23430 | Active | Oil | Richland, MT | True Oil LLC | 20,930 ft |
| Gravos 42-13 13-14h | 33-053-04493 | Active | Oil | Mckenzie, ND | True Oil LLC | 20,760 ft |
| True Federal 21-6 6-7h | 33-053-04072 | Active | Oil | Mckenzie, ND | True Oil LLC | 20,760 ft |
| Hagen 23-25 30-29h | 33-053-04642 | Active | Injection | Mckenzie, ND | True Oil LLC | 20,487 ft |
| Anvick 31-3 3-10 B3H | 25-083-23431 | Active | Oil | Richland, MT | True Oil LLC | 20,444 ft |
| Delaney Federal 21-4 4-9H | 25-083-23177 | Active | Oil | Richland, MT | True Oil LLC | 20,368 ft |
| Anvick 21-3 3-10H | 25-083-23113 | Active | Oil | Richland, MT | True Oil LLC | 20,125 ft |
| Liberty Federal 13-36 36-31h Tf1 | 33-053-04434 | Active | Oil | Mckenzie, ND | True Oil LLC | 20,096 ft |
| Slash Federal 44-33 4-9h | 33-053-03925 | Active | Oil | Mckenzie, ND | True Oil LLC | 20,034 ft |
Deepest first where depth is published. See all 1,863 wells →
Frequently asked questions
How many wells does True Oil operate?
True Oil is the operator of record for 1,863 catalogued oil & gas wells, with the largest concentration in Wyoming (1,255). Only wells in states WellCensus has ingested are counted.
How many of True Oil's wells are still active?
156 of True Oil's catalogued wells are active; 1,523 are plugged & abandoned and 2 are flagged as orphaned.
In which states does True Oil operate wells?
True Oil is the operator of record for wells in Wyoming (1,255), Montana (364), North Dakota (122), Colorado (74), Utah (19), Michigan (18), Kansas (6), Pennsylvania (3), New Mexico (1) and New York (1).
Does True Oil operate mostly oil or gas wells?
1,249 of True Oil's catalogued wells are oil wells and 138 are gas wells; the rest are injection, service or unclassified wells.
What is True Oil's deepest well?
Among wells with a published depth, Slash Federal 11-4 4-9 TF1H in Mckenzie, ND is the deepest at 21,519 ft.
Where True Oil's wells are
- Oil & gas wells in Wyoming· 1,255 operated by True Oil
- Oil & gas wells in Montana· 364 operated by True Oil
- Oil & gas wells in North Dakota· 122 operated by True Oil
- Oil & gas wells in Colorado· 74 operated by True Oil
- Oil & gas wells in Utah· 19 operated by True Oil
- Oil & gas wells in Michigan· 18 operated by True 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, “True Oil — well portfolio”, https://wellcensus.com/operators/true-oil-2472 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).