Mcelroy Ranch
Operator of record for 28 catalogued wells across 3 states. Every well below links to its full registry page.
Filed as: MCELROY RANCH · MCELROY RANCH CO · McElroy Ranch
At a glance
Mcelroy Ranch is the operator of record for 28 catalogued U.S. oil & gas wells in 3 states. None is listed as active, 28 (100%) are plugged & abandoned. Its largest concentration is in Colorado, with 19 wells (68% of its portfolio).
Wells operated
28
Active
0
Plugged
28
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Colorado | 19 |
| Wyoming | 8 |
| Montana | 1 |
Well mix
- Oil wells
- 14
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 0%
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Claim Mcelroy Ranch to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Mcelroy Ranch operate?
Mcelroy Ranch's catalogued wells are spread across 3 states: Colorado (19), Wyoming (8) and Montana (1). Its 19 Colorado wells are 0.0% of the 124,327 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 Mcelroy Ranch’s wells are active, plugged or orphaned?
0% of Mcelroy Ranch'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 Mcelroy Ranch operate?
By product class, 14 (50%) 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 Horne Bros 4 in Carbon, WY at 7,844 ft. The wells listed below sit in Carbon (WY), Weld (CO) and Morgan (CO). 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 Mcelroy Ranch
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Horne Bros 4 | 49-007-05465 | Plugged & abandoned | Oil | Carbon, WY | Mcelroy Ranch | 7,844 ft |
| A-1 Zimbleman (36) | 05-123-05065 | Plugged & abandoned | Oil | Weld, CO | Mcelroy Ranch Co | 7,140 ft |
| 3 Cuykendall | 05-123-05096 | Plugged & abandoned | Oil | Weld, CO | Mcelroy Ranch Co | 7,134 ft |
| 1 Cuykendall D | 05-123-05089 | Plugged & abandoned | Oil | Weld, CO | Mcelroy Ranch Co | 7,108 ft |
| 2 Cuykendall B-1 | 05-123-60014 | Plugged & abandoned | Oil | Weld, CO | Mcelroy Ranch Co | 7,105 ft |
| 5 Cuykendall A | 05-123-05090 | Plugged & abandoned | Oil | Weld, CO | Mcelroy Ranch Co | 7,080 ft |
| 2 Cuykendall | 05-123-05093 | Plugged & abandoned | Oil | Weld, CO | Mcelroy Ranch Co | 7,046 ft |
| 1 Sargent | 05-123-05054 | Plugged & abandoned | Other type | Weld, CO | Mcelroy Ranch Co | 7,040 ft |
| Horne 1 | 49-007-05470 | Plugged & abandoned | Oil | Carbon, WY | Mcelroy Ranch | 6,507 ft |
| 1 Orth | 05-087-05749 | Plugged & abandoned | Other type | Morgan, CO | Mcelroy Ranch Co | 6,155 ft |
| Horne 3 | 49-007-05466 | Plugged & abandoned | Oil | Carbon, WY | Mcelroy Ranch | 5,924 ft |
| 1 Govt | 05-123-05526 | Plugged & abandoned | Other type | Weld, CO | Mcelroy Ranch Co | 5,902 ft |
Deepest first where depth is published. See all 28 wells →
Frequently asked questions
How many wells does Mcelroy Ranch operate?
Mcelroy Ranch is the operator of record for 28 catalogued oil & gas wells, with the largest concentration in Colorado (19). Only wells in states WellCensus has ingested are counted.
How many of Mcelroy Ranch's wells are still active?
0 of Mcelroy Ranch's catalogued wells are active; 28 are plugged & abandoned.
In which states does Mcelroy Ranch operate wells?
Mcelroy Ranch is the operator of record for wells in Colorado (19), Wyoming (8) and Montana (1).
Does Mcelroy Ranch operate mostly oil or gas wells?
14 of Mcelroy Ranch's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Mcelroy Ranch's deepest well?
Among wells with a published depth, Horne Bros 4 in Carbon, WY is the deepest at 7,844 ft.
Where Mcelroy Ranch'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, “Mcelroy Ranch — well portfolio”, https://wellcensus.com/operators/mcelroy-ranch-3027 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).