A&s Mineral Development
Operator of record for 48 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
A&s Mineral Development is the operator of record for 48 catalogued U.S. oil & gas wells in 1 state. 31 (65%) are active, 1 (2%) plugged & abandoned. Its largest concentration is in Montana, with 48 wells (100% of its portfolio).
Wells operated
48
Active
31
Plugged
1
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Montana | 48 |
Well mix
- Oil wells
- 41
- Gas wells
- 0
- Shut-in
- 16
- Active share
- 65%
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Claim your operator profileWhere does A&s Mineral Development operate?
A&s Mineral Development's catalogued wells are spread across 1 state: Montana (48). Its 48 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 A&s Mineral Development’s wells are active, plugged or orphaned?
65% of A&s Mineral Development's catalogued wells are active, 36 percentage points above the national share of 29%. 2% are plugged & abandoned, against 47% nationally. 16 wells (33%) are shut-in — unplugged but idle. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does A&s Mineral Development operate?
By product class, 41 (85%) 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 K. Hawkins 1-16HZ in Valley, MT at 9,460 ft.
Notable wells operated by A&s Mineral Development
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| K. Hawkins 1-16HZ | 25-105-21432 | Shut-in | Oil | Valley, MT | A&S Mineral Development Company, LLC | 9,460 ft |
| Tieszen-Toews 3 | 25-105-21272 | Active | Oil | Valley, MT | A&S Mineral Development Company, LLC | 7,660 ft |
| Dahl 2-16 | 25-105-21574 | Active | Oil | Valley, MT | A&S Mineral Development Company, LLC | 7,421 ft |
| Dahl 3-16A | 25-105-21576 | Active | Oil | Valley, MT | A&S Mineral Development Company, LLC | 7,405 ft |
| Gary 1-16 | 25-105-21416 | Shut-in | Oil | Valley, MT | A&S Mineral Development Company, LLC | 7,350 ft |
| Kathryn Hawkins 1 | 25-105-21378 | Shut-in | Oil | Valley, MT | A&S Mineral Development Company, LLC | 7,350 ft |
| Dahl 1-16 | 25-105-21413 | Active | Oil | Valley, MT | A&S Mineral Development Company, LLC | 7,304 ft |
| Darlene 1-15 | 25-105-21417 | Active | Oil | Valley, MT | A&S Mineral Development Company, LLC | 7,300 ft |
| Ft. Peck 6-32 | 25-105-21579 | Active | Oil | Valley, MT | A&S Mineral Development Company, LLC | 7,272 ft |
| Tieszen-Toews 1 | 25-105-21218 | Active | Oil | Valley, MT | A&S Mineral Development Company, LLC | 7,270 ft |
| Harvey Grey Bear Heirs 1 | 25-105-21366 | Active | Injection | Valley, MT | A&S Mineral Development Company, LLC | 7,174 ft |
| Olfert "C" 1 | 25-105-21338 | Shut-in | Oil | Valley, MT | A&S Mineral Development Company, LLC | 7,121 ft |
Deepest first where depth is published. See all 48 wells →
Frequently asked questions
How many wells does A&s Mineral Development operate?
A&s Mineral Development is the operator of record for 48 catalogued oil & gas wells, with the largest concentration in Montana (48). Only wells in states WellCensus has ingested are counted.
How many of A&s Mineral Development's wells are still active?
31 of A&s Mineral Development's catalogued wells are active; 1 are plugged & abandoned.
In which states does A&s Mineral Development operate wells?
A&s Mineral Development is the operator of record for wells in Montana (48).
Does A&s Mineral Development operate mostly oil or gas wells?
41 of A&s Mineral Development's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is A&s Mineral Development's deepest well?
Among wells with a published depth, K. Hawkins 1-16HZ in Valley, MT is the deepest at 9,460 ft.
Where A&s Mineral 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, “A&s Mineral Development — well portfolio”, https://wellcensus.com/operators/a-s-mineral-development-130295 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).