Eugene & Joseph & Millard Vandermark
Operator of record for 4 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Eugene & Joseph & Millard Vandermark is the operator of record for 4 catalogued U.S. oil & gas wells in 1 state. None is listed as active, 3 (75%) are plugged & abandoned and 1 flagged as orphaned. Its largest concentration is in Pennsylvania, with 4 wells (100% of its portfolio).
Wells operated
4
Active
0
Plugged
3
Orphaned
1
Portfolio by state
| State | Wells |
|---|---|
| Pennsylvania | 4 |
Well mix
- Oil wells
- 1
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 0%
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Claim your operator profileWhere does Eugene & Joseph & Millard Vandermark operate?
Eugene & Joseph & Millard Vandermark's catalogued wells are spread across 1 state: Pennsylvania (4). Its 4 Pennsylvania wells are 0.0% of the 224,189 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 Eugene & Joseph & Millard Vandermark’s wells are active, plugged or orphaned?
0% of Eugene & Joseph & Millard Vandermark's catalogued wells are active, 29 percentage points below the national share of 29%. 75% are plugged & abandoned, against 47% nationally. 1 wells filed under this name are flagged as orphaned — unplugged, with no operator able to plug them.
What kinds of wells does Eugene & Joseph & Millard Vandermark operate?
By product class, 1 (25%) are oil wells and 0 (0%) gas wells; nationally the shares are 43% and 17%.
Notable wells operated by Eugene & Joseph & Millard Vandermark
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Millard W Vandermark Et Ux 3 | 37-121-26917 | Orphaned | Oil | Venango, PA | Eugene & Joseph & Millard Vandermark | — |
| Millard W Vandermark 1 | 37-121-24146 | Plugged & abandoned | Other type | Venango, PA | Eugene & Joseph & Millard Vandermark | — |
| Millard W Vandermark 1 | 37-121-23641 | Plugged & abandoned | Other type | Venango, PA | Eugene & Joseph & Millard Vandermark | — |
| Millard W Vandermark 2 | 37-121-23667 | Plugged & abandoned | Other type | Venango, PA | Eugene & Joseph & Millard Vandermark | — |
Deepest first where depth is published. See all 4 wells →
Frequently asked questions
How many wells does Eugene & Joseph & Millard Vandermark operate?
Eugene & Joseph & Millard Vandermark is the operator of record for 4 catalogued oil & gas wells, with the largest concentration in Pennsylvania (4). Only wells in states WellCensus has ingested are counted.
How many of Eugene & Joseph & Millard Vandermark's wells are still active?
0 of Eugene & Joseph & Millard Vandermark's catalogued wells are active; 3 are plugged & abandoned and 1 are flagged as orphaned.
In which states does Eugene & Joseph & Millard Vandermark operate wells?
Eugene & Joseph & Millard Vandermark is the operator of record for wells in Pennsylvania (4).
Does Eugene & Joseph & Millard Vandermark operate mostly oil or gas wells?
1 of Eugene & Joseph & Millard Vandermark's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
Where Eugene & Joseph & Millard Vandermark'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, “Eugene & Joseph & Millard Vandermark — well portfolio”, https://wellcensus.com/operators/eugene-joseph-millard-vandermark-101012 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).