Hollrah Exploration
Operator of record for 18 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Hollrah Exploration is the operator of record for 18 catalogued U.S. oil & gas wells in 1 state. 4 (22%) are active, 14 (78%) plugged & abandoned. Its largest concentration is in Oklahoma, with 18 wells (100% of its portfolio).
Wells operated
18
Active
4
Plugged
14
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Oklahoma | 18 |
Well mix
- Oil wells
- 5
- Gas wells
- 6
- Shut-in
- 0
- Active share
- 22%
Is this your company?
Claim Hollrah Exploration to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Hollrah Exploration operate?
Hollrah Exploration's catalogued wells are spread across 1 state: Oklahoma (18). Its 18 Oklahoma wells are 0.0% of the 456,595 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 Hollrah Exploration’s wells are active, plugged or orphaned?
22% of Hollrah Exploration's catalogued wells are active, 7 percentage points below the national share of 29%. 78% are plugged & abandoned, against 47% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Hollrah Exploration operate?
By product class, 5 (28%) are oil wells and 6 (33%) gas wells; nationally the shares are 43% and 17%. The wells listed below sit in Garfield (OK), Grant (OK), Logan (OK) and Oklahoma (OK).
Notable wells operated by Hollrah Exploration
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Isabel Cinnamon #1-33 | 35-047-25159 | Plugged & abandoned | Other type | Garfield, OK | Hollrah Exploration Company | — |
| Ryan Cinnamon #1-4 | 35-047-25200 | Plugged & abandoned | Oil | Garfield, OK | Hollrah Exploration Company | — |
| Smith & Walters #1-34 | 35-053-22462 | Plugged & abandoned | Other type | Grant, OK | Hollrah Exploration Company | — |
| Nicholas #2-16 | 35-083-23214 | Active | Oil | Logan, OK | Hollrah Exploration Company | — |
| Emmons #1-35 | 35-083-23249 | Plugged & abandoned | Other type | Logan, OK | Hollrah Exploration Company | — |
| Welch Trust #1-21 | 35-083-23268 | Plugged & abandoned | Other type | Logan, OK | Hollrah Exploration Company | — |
| Berg #1-6 | 35-083-23299 | Plugged & abandoned | Oil | Logan, OK | Hollrah Exploration Company | — |
| Green #1-7 | 35-083-23342 | Plugged & abandoned | Gas | Logan, OK | Hollrah Exploration Company | — |
| Leo Rother #1-10 | 35-083-23414 | Plugged & abandoned | Other type | Logan, OK | Hollrah Exploration Company | — |
| Davis Farms #1-31 | 35-083-23449 | Plugged & abandoned | Gas | Logan, OK | Hollrah Exploration Company | — |
| Nicholas #4-16 | 35-083-23593 | Plugged & abandoned | Other type | Logan, OK | Hollrah Exploration Company | — |
| Singletary #1-4 | 35-109-21111 | Active | Gas | Oklahoma, OK | Hollrah Exploration Company | — |
Deepest first where depth is published. See all 18 wells →
Frequently asked questions
How many wells does Hollrah Exploration operate?
Hollrah Exploration is the operator of record for 18 catalogued oil & gas wells, with the largest concentration in Oklahoma (18). Only wells in states WellCensus has ingested are counted.
How many of Hollrah Exploration's wells are still active?
4 of Hollrah Exploration's catalogued wells are active; 14 are plugged & abandoned.
In which states does Hollrah Exploration operate wells?
Hollrah Exploration is the operator of record for wells in Oklahoma (18).
Does Hollrah Exploration operate mostly oil or gas wells?
5 of Hollrah Exploration's catalogued wells are oil wells and 6 are gas wells; the rest are injection, service or unclassified wells.
Where Hollrah 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, “Hollrah Exploration — well portfolio”, https://wellcensus.com/operators/hollrah-exploration-14339 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).