Yellowstone Oil
Operator of record for 10 catalogued wells across 2 states. Every well below links to its full registry page.
Filed as: Yellowstone Oil Co. · Yellowstone Oil Co., Inc. · Yellowstone Oil Co., Ltd.
At a glance
Yellowstone Oil is the operator of record for 10 catalogued U.S. oil & gas wells in 2 states. None is listed as active, 10 (100%) are plugged & abandoned. Its largest concentration is in California, with 8 wells (80% of its portfolio).
Wells operated
10
Active
0
Plugged
10
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| California | 8 |
| Montana | 2 |
Well mix
- Oil wells
- 5
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 0%
Is this your company?
Claim Yellowstone Oil to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Yellowstone Oil operate?
Yellowstone Oil's catalogued wells are spread across 2 states: California (8) and Montana (2). Its 2 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 Yellowstone Oil’s wells are active, plugged or orphaned?
0% of Yellowstone Oil's catalogued wells are active, 29 percentage points below the national share of 29%. 100% are plugged & abandoned, against 47% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Yellowstone 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 Johnson "E" 1 in Richland, MT at 9,700 ft. The wells listed below sit in Richland (MT), San Luis Obispo (CA), Fresno (CA), Kern (CA), Santa Barbara (CA) and Los Angeles (CA). State filings spell the name 3 ways; WellCensus merges exact-normalized spellings only, so subsidiaries and affiliates keep their own pages.
Notable wells operated by Yellowstone Oil
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Johnson "E" 1 | 25-083-21214 | Plugged & abandoned | Oil | Richland, MT | Yellowstone Oil Co., Inc. | 9,700 ft |
| Hein 27-43 | 25-083-21371 | Plugged & abandoned | Oil | Richland, MT | Yellowstone Oil Co., Inc. | 9,376 ft |
| Lewis 1 | 04-079-00603 | Plugged & abandoned | Other type | San Luis Obispo, CA | Yellowstone Oil Co. | — |
| Lewis 2 | 04-079-00604 | Plugged & abandoned | Other type | San Luis Obispo, CA | Yellowstone Oil Co. | — |
| Coalinga Southern 1 | 04-019-06415 | Plugged & abandoned | Other type | Fresno, CA | Yellowstone Oil Co. | — |
| Kcl 0-14-16 | 04-029-30715 | Plugged & abandoned | Other type | Kern, CA | Yellowstone Oil Co. | — |
| Capital 1 | 04-083-03020 | Plugged & abandoned | Oil | Santa Barbara, CA | Yellowstone Oil Co. | — |
| Hollister Y-1 | 04-083-03450 | Plugged & abandoned | Oil | Santa Barbara, CA | Yellowstone Oil Co. | — |
| Hollister Y-2 | 04-083-03451 | Plugged & abandoned | Oil | Santa Barbara, CA | Yellowstone Oil Co. | — |
| Yellowstone-Castruccio 1 | 04-037-06266 | Plugged & abandoned | Other type | Los Angeles, CA | Yellowstone Oil Co., Ltd. | — |
Deepest first where depth is published. See all 10 wells →
Frequently asked questions
How many wells does Yellowstone Oil operate?
Yellowstone Oil is the operator of record for 10 catalogued oil & gas wells, with the largest concentration in California (8). Only wells in states WellCensus has ingested are counted.
How many of Yellowstone Oil's wells are still active?
0 of Yellowstone Oil's catalogued wells are active; 10 are plugged & abandoned.
In which states does Yellowstone Oil operate wells?
Yellowstone Oil is the operator of record for wells in California (8) and Montana (2).
Does Yellowstone Oil operate mostly oil or gas wells?
5 of Yellowstone Oil's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Yellowstone Oil's deepest well?
Among wells with a published depth, Johnson "E" 1 in Richland, MT is the deepest at 9,700 ft.
Where Yellowstone 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, “Yellowstone Oil — well portfolio”, https://wellcensus.com/operators/yellowstone-oil-3422 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).