Neihart Expl & Dev
Operator of record for 36 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Neihart Expl & Dev is the operator of record for 36 catalogued U.S. oil & gas wells in 1 state. None is listed as active, 1 (3%) are plugged & abandoned and 2 flagged as orphaned. Its largest concentration is in Ohio, with 36 wells (100% of its portfolio).
Wells operated
36
Active
0
Plugged
1
Orphaned
2
Portfolio by state
| State | Wells |
|---|---|
| Ohio | 36 |
Well mix
- Oil wells
- 36
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 0%
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Claim your operator profileWhere does Neihart Expl & Dev operate?
Neihart Expl & Dev's catalogued wells are spread across 1 state: Ohio (36). Its 36 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 Neihart Expl & Dev’s wells are active, plugged or orphaned?
0% of Neihart Expl & Dev's catalogued wells are active, 29 percentage points below the national share of 29%. 3% are plugged & abandoned, against 47% nationally. 2 wells filed under this name are flagged as orphaned — unplugged, with no operator able to plug them.
What kinds of wells does Neihart Expl & Dev operate?
By product class, 36 (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 Armstrong Harry 1 in Monroe, OH at 3,602 ft. The wells listed below sit in Monroe (OH) and Washington (OH).
Notable wells operated by Neihart Expl & Dev
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Armstrong Harry 1 | 34-111-21714 | Other status | Oil | Monroe, OH | Neihart Expl & Dev Co | 3,602 ft |
| Edwards John 1 | 34-167-20482 | Orphaned | Oil | Washington, OH | Neihart Expl & Dev Co | 1,480 ft |
| Edwards John 2 | 34-167-22052 | Orphaned | Oil | Washington, OH | Neihart Expl & Dev Co | 478 ft |
| Hines Gertrude 1 | 34-111-22462 | Other status | Oil | Monroe, OH | Neihart Expl & Dev Co | 0 ft |
| Hendershot Dale 2 | 34-111-22592 | Other status | Oil | Monroe, OH | Neihart Expl & Dev Co | 0 ft |
| Hines Gertrude 2 | 34-111-22463 | Other status | Oil | Monroe, OH | Neihart Expl & Dev Co | 0 ft |
| Coss Susana 1 | 34-111-22588 | Other status | Oil | Monroe, OH | Neihart Expl & Dev Co | 0 ft |
| Ritchie Maurice 2 | 34-111-22465 | Other status | Oil | Monroe, OH | Neihart Expl & Dev Co | 0 ft |
| Ritchie Maurice 1 | 34-111-22464 | Other status | Oil | Monroe, OH | Neihart Expl & Dev Co | 0 ft |
| Hendershot Dale 1 | 34-111-22591 | Other status | Oil | Monroe, OH | Neihart Expl & Dev Co | 0 ft |
| Leatherman Robert 4 | 34-111-22447 | Other status | Oil | Monroe, OH | Neihart Expl & Dev Co | 0 ft |
| Leatherman Robert 2 | 34-111-22441 | Other status | Oil | Monroe, OH | Neihart Expl & Dev Co | 0 ft |
Deepest first where depth is published. See all 36 wells →
Frequently asked questions
How many wells does Neihart Expl & Dev operate?
Neihart Expl & Dev is the operator of record for 36 catalogued oil & gas wells, with the largest concentration in Ohio (36). Only wells in states WellCensus has ingested are counted.
How many of Neihart Expl & Dev's wells are still active?
0 of Neihart Expl & Dev's catalogued wells are active; 1 are plugged & abandoned and 2 are flagged as orphaned.
In which states does Neihart Expl & Dev operate wells?
Neihart Expl & Dev is the operator of record for wells in Ohio (36).
Does Neihart Expl & Dev operate mostly oil or gas wells?
36 of Neihart Expl & Dev's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Neihart Expl & Dev's deepest well?
Among wells with a published depth, Armstrong Harry 1 in Monroe, OH is the deepest at 3,602 ft.
Where Neihart Expl & Dev'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, “Neihart Expl & Dev — well portfolio”, https://wellcensus.com/operators/neihart-expl-dev-87568 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).