Mayco Exploration
Operator of record for 7 catalogued wells across 3 states. Every well below links to its full registry page.
Filed as: MAYCO EXPLORATION · MAYCO EXPLORATION CO. · Mayco Exploration
At a glance
Mayco Exploration 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 Wyoming, with 5 wells (71% of its portfolio).
Wells operated
7
Active
0
Plugged
7
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Wyoming | 5 |
| Montana | 1 |
| North Dakota | 1 |
Well mix
- Oil wells
- 6
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 0%
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Claim Mayco Exploration to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Mayco Exploration operate?
Mayco Exploration's catalogued wells are spread across 3 states: Wyoming (5), Montana (1) and North Dakota (1). Its 5 Wyoming wells are 0.0% of the 129,957 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 Mayco Exploration’s wells are active, plugged or orphaned?
0% of Mayco Exploration'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 Mayco Exploration operate?
By product class, 6 (86%) 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 Boos 42-2 in Campbell, WY at 10,500 ft. The wells listed below sit in Campbell (WY), Mckenzie (ND), Weston (WY), Stillwater (MT) and Johnson (WY). 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 Mayco Exploration
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Boos 42-2 | 49-005-26057 | Plugged & abandoned | Oil | Campbell, WY | Mayco Exploration | 10,500 ft |
| Clabaugh 21-35 | 49-005-26349 | Plugged & abandoned | Oil | Campbell, WY | Mayco Exploration | 10,096 ft |
| Federal 13-2 | 33-053-01586 | Plugged & abandoned | Oil | Mckenzie, ND | Mayco Exploration Co. | 10,000 ft |
| Engdahl W-36658 23-32 | 49-005-26635 | Plugged & abandoned | Oil | Campbell, WY | Mayco Exploration | 9,926 ft |
| Garvin-Federal 1 | 49-045-21772 | Plugged & abandoned | Oil | Weston, WY | Mayco Exploration | 7,159 ft |
| Daggett 32-20 | 25-095-21181 | Plugged & abandoned | Other type | Stillwater, MT | Mayco Exploration | 6,720 ft |
| Rissler 31-18 | 49-019-20661 | Plugged & abandoned | Oil | Johnson, WY | Mayco Exploration | 5,000 ft |
Deepest first where depth is published. See all 7 wells →
Frequently asked questions
How many wells does Mayco Exploration operate?
Mayco Exploration is the operator of record for 7 catalogued oil & gas wells, with the largest concentration in Wyoming (5). Only wells in states WellCensus has ingested are counted.
How many of Mayco Exploration's wells are still active?
0 of Mayco Exploration's catalogued wells are active; 7 are plugged & abandoned.
In which states does Mayco Exploration operate wells?
Mayco Exploration is the operator of record for wells in Wyoming (5), Montana (1) and North Dakota (1).
Does Mayco Exploration operate mostly oil or gas wells?
6 of Mayco Exploration's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Mayco Exploration's deepest well?
Among wells with a published depth, Boos 42-2 in Campbell, WY is the deepest at 10,500 ft.
Where Mayco Exploration'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, “Mayco Exploration — well portfolio”, https://wellcensus.com/operators/mayco-exploration-15707 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).