Oakley & Hays
Operator of record for 10 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Oakley & Hays is the operator of record for 10 catalogued U.S. oil & gas wells in 1 state. None is listed as active, 10 (100%) are plugged & abandoned. Its largest concentration is in Montana, with 10 wells (100% of its portfolio).
Wells operated
10
Active
0
Plugged
10
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Montana | 10 |
Well mix
- Oil wells
- 4
- Gas wells
- 3
- Shut-in
- 0
- Active share
- 0%
Is this your company?
Claim Oakley & Hays to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Oakley & Hays operate?
Oakley & Hays's catalogued wells are spread across 1 state: Montana (10). Its 10 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 Oakley & Hays’s wells are active, plugged or orphaned?
0% of Oakley & Hays'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 Oakley & Hays operate?
By product class, 4 (40%) are oil wells and 3 (30%) gas wells; nationally the shares are 43% and 17%. The deepest of its wells with a published depth is Siefert 10-1 in Musselshell, MT at 2,524 ft. The wells listed below sit in Musselshell (MT) and Toole (MT).
Notable wells operated by Oakley & Hays
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Siefert 10-1 | 25-065-21040 | Plugged & abandoned | Other type | Musselshell, MT | Oakley & Hays | 2,524 ft |
| Thomas-Cin<>1-R | 25-065-21504 | Plugged & abandoned | Other type | Musselshell, MT | Oakley & Hays | 2,250 ft |
| Thomas-Cinde<>1 | 25-065-21500 | Plugged & abandoned | Other type | Musselshell, MT | Oakley & Hays | 1,796 ft |
| Habets 1 | 25-101-22378 | Plugged & abandoned | Gas | Toole, MT | Oakley & Hays | 1,776 ft |
| Sorrell 2B | 25-101-22026 | Plugged & abandoned | Oil | Toole, MT | Oakley & Hays | 1,556 ft |
| Corey 1-B | 25-101-22187 | Plugged & abandoned | Oil | Toole, MT | Oakley & Hays | 1,546 ft |
| Corey 9 | 25-101-09721 | Plugged & abandoned | Gas | Toole, MT | Oakley & Hays | 1,536 ft |
| Corey A-1 | 25-101-22108 | Plugged & abandoned | Oil | Toole, MT | Oakley & Hays | 1,509 ft |
| Corey 6 | 25-101-09705 | Plugged & abandoned | Oil | Toole, MT | Oakley & Hays | 1,476 ft |
| Sorrell Trust 1 | 25-101-22008 | Plugged & abandoned | Gas | Toole, MT | Oakley & Hays | 1,275 ft |
Deepest first where depth is published. See all 10 wells →
Frequently asked questions
How many wells does Oakley & Hays operate?
Oakley & Hays is the operator of record for 10 catalogued oil & gas wells, with the largest concentration in Montana (10). Only wells in states WellCensus has ingested are counted.
How many of Oakley & Hays's wells are still active?
0 of Oakley & Hays's catalogued wells are active; 10 are plugged & abandoned.
In which states does Oakley & Hays operate wells?
Oakley & Hays is the operator of record for wells in Montana (10).
Does Oakley & Hays operate mostly oil or gas wells?
4 of Oakley & Hays's catalogued wells are oil wells and 3 are gas wells; the rest are injection, service or unclassified wells.
What is Oakley & Hays's deepest well?
Among wells with a published depth, Siefert 10-1 in Musselshell, MT is the deepest at 2,524 ft.
Where Oakley & Hays'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, “Oakley & Hays — well portfolio”, https://wellcensus.com/operators/oakley-hays-128282 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).