Mountain States Drilling
Operator of record for 7 catalogued wells across 3 states. Every well below links to its full registry page.
Filed as: MOUNTAIN STATES DRILLING CO INC · MOUNTAIN STATES DRILLING CO., INC · Mountain States Drilling Co.
At a glance
Mountain States Drilling is the operator of record for 7 catalogued U.S. oil & gas wells in 3 states. None is listed as active, 7 (100%) are plugged & abandoned. Its largest concentration is in Montana, with 4 wells (57% of its portfolio).
Wells operated
7
Active
0
Plugged
7
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Montana | 4 |
| Wyoming | 2 |
| Colorado | 1 |
Well mix
- Oil wells
- 2
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 0%
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Claim Mountain States Drilling to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Mountain States Drilling operate?
Mountain States Drilling's catalogued wells are spread across 3 states: Montana (4), Wyoming (2) and Colorado (1). Its 4 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 Mountain States Drilling’s wells are active, plugged or orphaned?
0% of Mountain States Drilling'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 Mountain States Drilling operate?
By product class, 2 (29%) 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 Phillips 1 in Washakie, WY at 9,337 ft. The wells listed below sit in Washakie (WY), Mesa (CO) and Custer (MT). 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 Mountain States Drilling
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Phillips 1 | 49-043-05157 | Plugged & abandoned | Oil | Washakie, WY | Mountain States Drilling Co Inc | 9,337 ft |
| Federal 1 | 49-043-05178 | Plugged & abandoned | Oil | Washakie, WY | Mountain States Drilling Co Inc | 9,038 ft |
| 28-1 Mt States-Gov | 05-077-05074 | Plugged & abandoned | Other type | Mesa, CO | Mountain States Drilling Co., Inc | 8,862 ft |
| Govt 1-Ax | 25-017-05005 | Plugged & abandoned | Other type | Custer, MT | Mountain States Drilling Co. | 3,387 ft |
| Govt. 1-C | 25-017-05002 | Plugged & abandoned | Other type | Custer, MT | Mountain States Drilling Co. | 3,231 ft |
| Govt. 1-B | 25-017-05022 | Plugged & abandoned | Other type | Custer, MT | Mountain States Drilling Co. | 3,028 ft |
| Govt-Greer 1-A | 25-017-05004 | Plugged & abandoned | Other type | Custer, MT | Mountain States Drilling Co. | 2,508 ft |
Deepest first where depth is published. See all 7 wells →
Frequently asked questions
How many wells does Mountain States Drilling operate?
Mountain States Drilling is the operator of record for 7 catalogued oil & gas wells, with the largest concentration in Montana (4). Only wells in states WellCensus has ingested are counted.
How many of Mountain States Drilling's wells are still active?
0 of Mountain States Drilling's catalogued wells are active; 7 are plugged & abandoned.
In which states does Mountain States Drilling operate wells?
Mountain States Drilling is the operator of record for wells in Montana (4), Wyoming (2) and Colorado (1).
Does Mountain States Drilling operate mostly oil or gas wells?
2 of Mountain States Drilling's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Mountain States Drilling's deepest well?
Among wells with a published depth, Phillips 1 in Washakie, WY is the deepest at 9,337 ft.
Where Mountain States Drilling'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, “Mountain States Drilling — well portfolio”, https://wellcensus.com/operators/mountain-states-drilling-19675 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).