Mellenco
Operator of record for 11 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Mellenco is the operator of record for 11 catalogued U.S. oil & gas wells in 1 state. None is listed as active, 8 (73%) are plugged & abandoned. Its largest concentration is in Ohio, with 11 wells (100% of its portfolio).
Wells operated
11
Active
0
Plugged
8
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Ohio | 11 |
Well mix
- Oil wells
- 11
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 0%
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Claim your operator profileWhere does Mellenco operate?
Mellenco's catalogued wells are spread across 1 state: Ohio (11). Its 11 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 Mellenco’s wells are active, plugged or orphaned?
0% of Mellenco's catalogued wells are active, 29 percentage points below the national share of 29%. 73% are plugged & abandoned, against 47% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Mellenco operate?
By product class, 11 (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 Weibush Unit 4 in Portage, OH at 5,038 ft. The wells listed below sit in Portage (OH) and Medina (OH).
Notable wells operated by Mellenco
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Weibush Unit 4 | 34-133-22518 | Plugged & abandoned | Oil | Portage, OH | Mellenco Inc | 5,038 ft |
| Weibush Unit 5 | 34-133-22519 | Plugged & abandoned | Oil | Portage, OH | Mellenco Inc | 5,023 ft |
| Leatherman Willard S& Leulla M 1 | 34-103-22162 | Plugged & abandoned | Oil | Medina, OH | Mellenco Inc | 3,698 ft |
| Brainard-Leatherman 3 | 34-103-22334 | Plugged & abandoned | Oil | Medina, OH | Mellenco Inc | 3,639 ft |
| Milbalik J & Mibalik I- Holcomb 1 | 34-103-22354 | Plugged & abandoned | Oil | Medina, OH | Mellenco Inc | 3,635 ft |
| Leatherman Willard & Luella 2 | 34-103-22270 | Plugged & abandoned | Oil | Medina, OH | Mellenco Inc | 3,620 ft |
| Notebaert Edmond F 1 | 34-103-22273 | Plugged & abandoned | Oil | Medina, OH | Mellenco Inc | 3,529 ft |
| Mcilvried Edwin J & Collette 2 | 34-103-22177 | Plugged & abandoned | Oil | Medina, OH | Mellenco Inc | 0 ft |
| Mcilvried Fj 4 | 34-103-22984 | Other status | Oil | Medina, OH | Mellenco Inc | 0 ft |
| Mcilvried Ej 5 | 34-103-23340 | Other status | Oil | Medina, OH | Mellenco Inc | 0 ft |
| Mclivried Fj 6 | 34-103-23705 | Other status | Oil | Medina, OH | Mellenco Inc | 0 ft |
Deepest first where depth is published. See all 11 wells →
Frequently asked questions
How many wells does Mellenco operate?
Mellenco is the operator of record for 11 catalogued oil & gas wells, with the largest concentration in Ohio (11). Only wells in states WellCensus has ingested are counted.
How many of Mellenco's wells are still active?
0 of Mellenco's catalogued wells are active; 8 are plugged & abandoned.
In which states does Mellenco operate wells?
Mellenco is the operator of record for wells in Ohio (11).
Does Mellenco operate mostly oil or gas wells?
11 of Mellenco's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Mellenco's deepest well?
Among wells with a published depth, Weibush Unit 4 in Portage, OH is the deepest at 5,038 ft.
Where Mellenco'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, “Mellenco — well portfolio”, https://wellcensus.com/operators/mellenco-86346 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).