Hesla Oil
Operator of record for 26 catalogued wells across 1 state. Every well below links to its full registry page.
Filed as: Hesla Oil Co · Hesla Oil, LLC
At a glance
Hesla Oil is the operator of record for 26 catalogued U.S. oil & gas wells in 1 state. None is listed as active, 17 (65%) are plugged & abandoned. Its largest concentration is in Montana, with 26 wells (100% of its portfolio).
Wells operated
26
Active
0
Plugged
17
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Montana | 26 |
Well mix
- Oil wells
- 20
- Gas wells
- 1
- Shut-in
- 9
- Active share
- 0%
Is this your company?
Claim Hesla Oil to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Hesla Oil operate?
Hesla Oil's catalogued wells are spread across 1 state: Montana (26). Its 26 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 Hesla Oil’s wells are active, plugged or orphaned?
0% of Hesla Oil's catalogued wells are active, 29 percentage points below the national share of 29%. 65% are plugged & abandoned, against 47% nationally. 9 wells (35%) are shut-in — unplugged but idle. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Hesla Oil operate?
By product class, 20 (77%) are oil wells and 1 (4%) gas wells; nationally the shares are 43% and 17%. The deepest of its wells with a published depth is Kelleher 1 in Toole, MT at 2,610 ft. 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 Hesla Oil
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Kelleher 1 | 25-101-07349 | Plugged & abandoned | Oil | Toole, MT | Hesla Oil Co | 2,610 ft |
| State 1 | 25-101-07333 | Plugged & abandoned | Other type | Toole, MT | Hesla Oil Co | 2,570 ft |
| Negu 11 | 25-101-05511 | Plugged & abandoned | Oil | Toole, MT | Hesla Oil Co | 1,890 ft |
| Negu 4 | 25-101-05496 | Plugged & abandoned | Oil | Toole, MT | Hesla Oil Co | 1,884 ft |
| Wagner 1 | 25-101-07197 | Plugged & abandoned | Other type | Toole, MT | Hesla Oil Co | 1,876 ft |
| Negu 3 | 25-101-05507 | Plugged & abandoned | Oil | Toole, MT | Hesla Oil Co | 1,869 ft |
| Negu 9 | 25-101-05503 | Plugged & abandoned | Oil | Toole, MT | Hesla Oil Co | 1,865 ft |
| Negu 1 | 25-101-05498 | Plugged & abandoned | Oil | Toole, MT | Hesla Oil Co | 1,865 ft |
| First Natl B<>1 | 25-101-07227 | Plugged & abandoned | Other type | Toole, MT | Hesla Oil Co | 1,858 ft |
| Negu 2 | 25-101-05497 | Plugged & abandoned | Oil | Toole, MT | Hesla Oil Co | 1,853 ft |
| Negu 5 | 25-101-05447 | Plugged & abandoned | Oil | Toole, MT | Hesla Oil Co | 1,837 ft |
| Negu 10 | 25-101-05440 | Plugged & abandoned | Oil | Toole, MT | Hesla Oil Co | 1,836 ft |
Deepest first where depth is published. See all 26 wells →
Frequently asked questions
How many wells does Hesla Oil operate?
Hesla Oil is the operator of record for 26 catalogued oil & gas wells, with the largest concentration in Montana (26). Only wells in states WellCensus has ingested are counted.
How many of Hesla Oil's wells are still active?
0 of Hesla Oil's catalogued wells are active; 17 are plugged & abandoned.
In which states does Hesla Oil operate wells?
Hesla Oil is the operator of record for wells in Montana (26).
Does Hesla Oil operate mostly oil or gas wells?
20 of Hesla Oil's catalogued wells are oil wells and 1 are gas wells; the rest are injection, service or unclassified wells.
What is Hesla Oil's deepest well?
Among wells with a published depth, Kelleher 1 in Toole, MT is the deepest at 2,610 ft.
Where Hesla 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, “Hesla Oil — well portfolio”, https://wellcensus.com/operators/hesla-oil-129546 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).