Hamilton Leonard O
Operator of record for 55 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Hamilton Leonard O is the operator of record for 55 catalogued U.S. oil & gas wells in 1 state. 49 (89%) are active, 4 (7%) plugged & abandoned. Its largest concentration is in Ohio, with 55 wells (100% of its portfolio).
Wells operated
55
Active
49
Plugged
4
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Ohio | 55 |
Well mix
- Oil wells
- 55
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 89%
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Claim your operator profileWhere does Hamilton Leonard O operate?
Hamilton Leonard O's catalogued wells are spread across 1 state: Ohio (55). Its 55 Ohio wells are 0.0% of the 242,052 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 Hamilton Leonard O’s wells are active, plugged or orphaned?
89% of Hamilton Leonard O's catalogued wells are active, 60 percentage points above the national share of 29%. 7% are plugged & abandoned, against 47% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Hamilton Leonard O operate?
By product class, 55 (100%) 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 Day K M 1 in Washington, OH at 4,300 ft.
Notable wells operated by Hamilton Leonard O
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Day K M 1 | 34-167-27627 | Active | Oil | Washington, OH | Hamilton Leonard O | 4,300 ft |
| Day W R 1 | 34-167-27631 | Active | Oil | Washington, OH | Hamilton Leonard O | 3,933 ft |
| Johnson 1 | 34-167-27511 | Active | Oil | Washington, OH | Hamilton Leonard O | 3,902 ft |
| Adkins Roam 2 | 34-167-26536 | Active | Oil | Washington, OH | Hamilton Leonard O | 3,770 ft |
| West Isaac & Ruth 1 | 34-167-23127 | Active | Oil | Washington, OH | Hamilton Leonard O | 3,355 ft |
| Barnhouse Cecil & Kathryn 1 | 34-167-24958 | Plugged & abandoned | Oil | Washington, OH | Hamilton Leonard O | 2,435 ft |
| Adkins Roam 1 | 34-167-26537 | Active | Oil | Washington, OH | Hamilton Leonard O | 2,323 ft |
| Heldman Otto 7 | 34-167-28873 | Active | Oil | Washington, OH | Hamilton Leonard O | 2,172 ft |
| Booth Elvin 1 | 34-167-28948 | Active | Oil | Washington, OH | Hamilton Leonard O | 2,024 ft |
| Winland H W 2 | 34-167-63595 | Active | Oil | Washington, OH | Hamilton Leonard O | 1,959 ft |
| Hamilton 2 | 34-167-27766 | Active | Oil | Washington, OH | Hamilton Leonard O | 1,926 ft |
| Alloway 1 | 34-167-29369 | Active | Oil | Washington, OH | Hamilton Leonard O | 1,825 ft |
Deepest first where depth is published. See all 55 wells →
Frequently asked questions
How many wells does Hamilton Leonard O operate?
Hamilton Leonard O is the operator of record for 55 catalogued oil & gas wells, with the largest concentration in Ohio (55). Only wells in states WellCensus has ingested are counted.
How many of Hamilton Leonard O's wells are still active?
49 of Hamilton Leonard O's catalogued wells are active; 4 are plugged & abandoned.
In which states does Hamilton Leonard O operate wells?
Hamilton Leonard O is the operator of record for wells in Ohio (55).
Does Hamilton Leonard O operate mostly oil or gas wells?
55 of Hamilton Leonard O's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Hamilton Leonard O's deepest well?
Among wells with a published depth, Day K M 1 in Washington, OH is the deepest at 4,300 ft.
Where Hamilton Leonard O'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, “Hamilton Leonard O — well portfolio”, https://wellcensus.com/operators/hamilton-leonard-o-94722 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).