Mayo Oil
Operator of record for 23 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Mayo Oil is the operator of record for 23 catalogued U.S. oil & gas wells in 1 state. None is listed as active, 19 (83%) are plugged & abandoned and 4 flagged as orphaned. Its largest concentration is in Arkansas, with 23 wells (100% of its portfolio).
Wells operated
23
Active
0
Plugged
19
Orphaned
4
Portfolio by state
| State | Wells |
|---|---|
| Arkansas | 23 |
Well mix
- Oil wells
- 18
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 0%
Is this your company?
Claim Mayo Oil to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Mayo Oil operate?
Mayo Oil's catalogued wells are spread across 1 state: Arkansas (23). Its 23 Arkansas wells are 0.1% of the 33,791 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 Mayo Oil’s wells are active, plugged or orphaned?
0% of Mayo Oil's catalogued wells are active, 29 percentage points below the national share of 29%. 83% are plugged & abandoned, against 47% nationally. 4 wells filed under this name are flagged as orphaned — unplugged, with no operator able to plug them.
What kinds of wells does Mayo Oil operate?
By product class, 18 (78%) 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 H.L. Thomas "A" 1 in Columbia, AR at 3,586 ft.
Notable wells operated by Mayo Oil
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| H.L. Thomas "A" 1 | 03-027-00511 | Plugged & abandoned | Oil | Columbia, AR | Mayo Oil Company | 3,586 ft |
| Milam W/F Unit "B" 3 | 03-027-00502 | Plugged & abandoned | Oil | Columbia, AR | Mayo Oil Company | 2,331 ft |
| Milam W/F Unit "C" 1 | 03-027-00477 | Plugged & abandoned | Oil | Columbia, AR | Mayo Oil Company | 2,331 ft |
| Milam W/F Unit I-4 | 03-027-00479 | Plugged & abandoned | Oil | Columbia, AR | Mayo Oil Company | 2,302 ft |
| Milam W/F Unit "B" 1 | 03-027-00476 | Plugged & abandoned | Oil | Columbia, AR | Mayo Oil Company | 2,301 ft |
| Milam W/F Unit "I" 2 | 03-027-00494 | Plugged & abandoned | Oil | Columbia, AR | Mayo Oil Company | 2,292 ft |
| Milam W/F Unit "P" 5 | 03-027-00512 | Plugged & abandoned | Oil | Columbia, AR | Mayo Oil Company | 2,288 ft |
| H.L. Thomas "B" 3 | 03-027-00505 | Plugged & abandoned | Oil | Columbia, AR | Mayo Oil Company | 2,280 ft |
| Milam W/F Unit "P" 3 | 03-027-00495 | Plugged & abandoned | Other type | Columbia, AR | Mayo Oil Company | 2,275 ft |
| H.L. Thomas "B" 2 | 03-027-00504 | Plugged & abandoned | Oil | Columbia, AR | Mayo Oil Company | 2,275 ft |
| S.P. McCLURKIN "P" 9 | 03-027-00489 | Plugged & abandoned | Oil | Columbia, AR | Mayo Oil Company | 2,274 ft |
| Milam W/F Unit "I" 5 | 03-027-00488 | Plugged & abandoned | Oil | Columbia, AR | Mayo Oil Company | 2,270 ft |
Deepest first where depth is published. See all 23 wells →
Frequently asked questions
How many wells does Mayo Oil operate?
Mayo Oil is the operator of record for 23 catalogued oil & gas wells, with the largest concentration in Arkansas (23). Only wells in states WellCensus has ingested are counted.
How many of Mayo Oil's wells are still active?
0 of Mayo Oil's catalogued wells are active; 19 are plugged & abandoned and 4 are flagged as orphaned.
In which states does Mayo Oil operate wells?
Mayo Oil is the operator of record for wells in Arkansas (23).
Does Mayo Oil operate mostly oil or gas wells?
18 of Mayo Oil's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Mayo Oil's deepest well?
Among wells with a published depth, H.L. Thomas "A" 1 in Columbia, AR is the deepest at 3,586 ft.
Where Mayo 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, “Mayo Oil — well portfolio”, https://wellcensus.com/operators/mayo-oil-65921 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).