Holly Oil
Operator of record for 12 catalogued wells across 2 states. Every well below links to its full registry page.
Filed as: HOLLY OIL COMPANY · Holly Oil Co.
At a glance
Holly Oil is the operator of record for 12 catalogued U.S. oil & gas wells in 2 states. None is listed as active, 12 (100%) are plugged & abandoned. Its largest concentration is in Colorado, with 11 wells (92% of its portfolio).
Wells operated
12
Active
0
Plugged
12
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Colorado | 11 |
| California | 1 |
Well mix
- Oil wells
- 0
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 0%
Is this your company?
Claim Holly Oil to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Holly Oil operate?
Holly Oil's catalogued wells are spread across 2 states: Colorado (11) and California (1). Its 11 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 Holly Oil’s wells are active, plugged or orphaned?
0% of Holly Oil'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 Holly Oil operate?
By product class, 0 (0%) 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 44-36x State in Logan, CO at 5,392 ft. The wells listed below sit in Logan (CO), Washington (CO), Bent (CO), Yuma (CO), El Paso (CO) and Archuleta (CO) and other counties. State filings spell the name 2 ways; WellCensus merges exact-normalized spellings only, so subsidiaries and affiliates keep their own pages.
Notable wells operated by Holly Oil
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| 44-36x State | 05-075-08135 | Plugged & abandoned | Other type | Logan, CO | Holly Oil Company | 5,392 ft |
| 44-36 State | 05-075-08130 | Plugged & abandoned | Other type | Logan, CO | Holly Oil Company | 5,247 ft |
| 23-9 State | 05-075-08129 | Plugged & abandoned | Other type | Logan, CO | Holly Oil Company | 5,130 ft |
| 33-18 Mccollister | 05-121-08187 | Plugged & abandoned | Other type | Washington, CO | Holly Oil Company | 5,050 ft |
| 43-26 Horn | 05-121-08188 | Plugged & abandoned | Other type | Washington, CO | Holly Oil Company | 4,910 ft |
| 1 Thulemeyer - Martin | 05-011-05031 | Plugged & abandoned | Other type | Bent, CO | Holly Oil Company | 4,810 ft |
| 22-21 Geweke | 05-125-06010 | Plugged & abandoned | Other type | Yuma, CO | Holly Oil Company | 3,906 ft |
| 1-X N B H Land Co-Ward-Conove | 05-041-06031 | Plugged & abandoned | Other type | El Paso, CO | Holly Oil Company | 2,396 ft |
| 1 Macht | 05-007-60017 | Plugged & abandoned | Other type | Archuleta, CO | Holly Oil Company | 2,140 ft |
| 1 N B H Land Co - Ward-Cono | 05-041-06029 | Plugged & abandoned | Other type | El Paso, CO | Holly Oil Company | 826 ft |
| 1 N B H Land Co - Ward | 05-041-06030 | Plugged & abandoned | Other type | El Paso, CO | Holly Oil Company | 826 ft |
| Meherin 1 | 04-079-00648 | Plugged & abandoned | Other type | San Luis Obispo, CA | Holly Oil Co. | — |
Deepest first where depth is published. See all 12 wells →
Frequently asked questions
How many wells does Holly Oil operate?
Holly Oil is the operator of record for 12 catalogued oil & gas wells, with the largest concentration in Colorado (11). Only wells in states WellCensus has ingested are counted.
How many of Holly Oil's wells are still active?
0 of Holly Oil's catalogued wells are active; 12 are plugged & abandoned.
In which states does Holly Oil operate wells?
Holly Oil is the operator of record for wells in Colorado (11) and California (1).
Does Holly Oil operate mostly oil or gas wells?
0 of Holly Oil's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Holly Oil's deepest well?
Among wells with a published depth, 44-36x State in Logan, CO is the deepest at 5,392 ft.
Where Holly Oil'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, “Holly Oil — well portfolio”, https://wellcensus.com/operators/holly-oil-16268 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).