Mountain States Development
Operator of record for 3 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Mountain States Development is the operator of record for 3 catalogued U.S. oil & gas wells in 1 state. None is listed as active, 2 (67%) are plugged & abandoned. Its largest concentration is in California, with 3 wells (100% of its portfolio).
Wells operated
3
Active
0
Plugged
2
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| California | 3 |
Well mix
- Oil wells
- 3
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 0%
Is this your company?
Claim Mountain States Development to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Mountain States Development operate?
Mountain States Development's catalogued wells are spread across 1 state: California (3). Its 3 California wells are 0.0% of the 242,471 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 Development’s wells are active, plugged or orphaned?
0% of Mountain States Development's catalogued wells are active, 29 percentage points below the national share of 29%. 67% 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 Development operate?
By product class, 3 (100%) are oil wells and 0 (0%) gas wells; nationally the shares are 43% and 17%.
Notable wells operated by Mountain States Development
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Cooney 66X-34 | 04-029-40970 | Plugged & abandoned | Oil | Kern, CA | Mountain States Development Co. | — |
| USL-Norris 1 | 04-029-40969 | Plugged & abandoned | Oil | Kern, CA | Mountain States Development Co. | — |
| Jones 29-11 | 04-029-42037 | Other status | Oil | Kern, CA | Mountain States Development Co. | — |
Deepest first where depth is published. See all 3 wells →
Frequently asked questions
How many wells does Mountain States Development operate?
Mountain States Development is the operator of record for 3 catalogued oil & gas wells, with the largest concentration in California (3). Only wells in states WellCensus has ingested are counted.
How many of Mountain States Development's wells are still active?
0 of Mountain States Development's catalogued wells are active; 2 are plugged & abandoned.
In which states does Mountain States Development operate wells?
Mountain States Development is the operator of record for wells in California (3).
Does Mountain States Development operate mostly oil or gas wells?
3 of Mountain States Development's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
Where Mountain States Development'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 Development — well portfolio”, https://wellcensus.com/operators/mountain-states-development-12881 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).