Yellowstone Petroleums
Operator of record for 65 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Yellowstone Petroleums is the operator of record for 65 catalogued U.S. oil & gas wells in 1 state. 1 (2%) are active, 37 (57%) plugged & abandoned and 2 flagged as orphaned. Its largest concentration is in Montana, with 65 wells (100% of its portfolio).
Wells operated
65
Active
1
Plugged
37
Orphaned
2
Portfolio by state
| State | Wells |
|---|---|
| Montana | 65 |
Well mix
- Oil wells
- 30
- Gas wells
- 4
- Shut-in
- 25
- Active share
- 2%
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Claim your operator profileWhere does Yellowstone Petroleums operate?
Yellowstone Petroleums's catalogued wells are spread across 1 state: Montana (65). Its 65 Montana wells are 0.2% 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 Yellowstone Petroleums’s wells are active, plugged or orphaned?
2% of Yellowstone Petroleums's catalogued wells are active, 27 percentage points below the national share of 29%. 57% are plugged & abandoned, against 47% nationally. 25 wells (38%) 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 Yellowstone Petroleums operate?
By product class, 30 (46%) are oil wells and 4 (6%) gas wells; nationally the shares are 43% and 17%. The deepest of its wells with a published depth is C.-Gray 9-23 in Liberty, MT at 3,085 ft. The wells listed below sit in Liberty (MT), Glacier (MT) and Toole (MT).
Notable wells operated by Yellowstone Petroleums
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| C.-Gray 9-23 | 25-051-21578 | Plugged & abandoned | Other type | Liberty, MT | Yellowstone Petroleums, Inc. | 3,085 ft |
| Rieland 6-17 | 25-051-21558 | Plugged & abandoned | Other type | Liberty, MT | Yellowstone Petroleums, Inc. | 3,000 ft |
| Essex Cobb 4 | 25-035-07215 | Active | Injection | Glacier, MT | Yellowstone Petroleums, Inc. | 2,947 ft |
| Hall 9-22 | 25-051-21606 | Plugged & abandoned | Other type | Liberty, MT | Yellowstone Petroleums, Inc. | 2,878 ft |
| Henry 10-26 | 25-101-21934 | Plugged & abandoned | Gas | Toole, MT | Yellowstone Petroleums, Inc. | 2,860 ft |
| Essex-Thompson 1 | 25-035-07184 | Orphaned | Oil | Glacier, MT | Yellowstone Petroleums, Inc. | 2,809 ft |
| Essex Cobb 5-14 | 25-035-21598 | Shut-in | Oil | Glacier, MT | Yellowstone Petroleums, Inc. | 2,794 ft |
| Essex-Cobb 3 | 25-035-07214 | Shut-in | Oil | Glacier, MT | Yellowstone Petroleums, Inc. | 2,753 ft |
| Essex-Cobb 2 | 25-035-07216 | Plugged & abandoned | Injection | Glacier, MT | Yellowstone Petroleums, Inc. | 2,745 ft |
| Essex Cobb 1 | 25-035-07139 | Shut-in | Oil | Glacier, MT | Yellowstone Petroleums, Inc. | 2,727 ft |
| Blair 3-23 | 25-051-21544 | Plugged & abandoned | Other type | Liberty, MT | Yellowstone Petroleums, Inc. | 2,682 ft |
| Pugsley 14-22 | 25-051-21601 | Plugged & abandoned | Other type | Liberty, MT | Yellowstone Petroleums, Inc. | 2,680 ft |
Deepest first where depth is published. See all 65 wells →
Frequently asked questions
How many wells does Yellowstone Petroleums operate?
Yellowstone Petroleums is the operator of record for 65 catalogued oil & gas wells, with the largest concentration in Montana (65). Only wells in states WellCensus has ingested are counted.
How many of Yellowstone Petroleums's wells are still active?
1 of Yellowstone Petroleums's catalogued wells are active; 37 are plugged & abandoned and 2 are flagged as orphaned.
In which states does Yellowstone Petroleums operate wells?
Yellowstone Petroleums is the operator of record for wells in Montana (65).
Does Yellowstone Petroleums operate mostly oil or gas wells?
30 of Yellowstone Petroleums's catalogued wells are oil wells and 4 are gas wells; the rest are injection, service or unclassified wells.
What is Yellowstone Petroleums's deepest well?
Among wells with a published depth, C.-Gray 9-23 in Liberty, MT is the deepest at 3,085 ft.
Where Yellowstone Petroleums'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, “Yellowstone Petroleums — well portfolio”, https://wellcensus.com/operators/yellowstone-petroleums-127469 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).