Nevco Systems
Operator of record for 6 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Nevco Systems is the operator of record for 6 catalogued U.S. oil & gas wells in 1 state. 3 (50%) are active, 3 (50%) plugged & abandoned. Its largest concentration is in Illinois, with 6 wells (100% of its portfolio).
Wells operated
6
Active
3
Plugged
3
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Illinois | 6 |
Well mix
- Oil wells
- 3
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 50%
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Claim your operator profileWhere does Nevco Systems operate?
Nevco Systems's catalogued wells are spread across 1 state: Illinois (6). Its 6 Illinois wells are 0.0% of the 174,478 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 Nevco Systems’s wells are active, plugged or orphaned?
50% of Nevco Systems's catalogued wells are active, 21 percentage points above the national share of 29%. 50% are plugged & abandoned, against 47% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Nevco Systems operate?
By product class, 3 (50%) 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 Mahrenholz 5 in Lawrence, IL at 2,412 ft.
Notable wells operated by Nevco Systems
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Mahrenholz 5 | 12-101-29741 | Active | Oil | Lawrence, IL | Nevco Systems, Inc. | 2,412 ft |
| Mahrenholz 2 | 12-101-29738 | Plugged & abandoned | Oil | Lawrence, IL | Nevco Systems, Inc. | 2,400 ft |
| Mahrenholz 3 | 12-101-29739 | Plugged & abandoned | Other type | Lawrence, IL | Nevco Systems, Inc. | 1,930 ft |
| Mahrenholz 4-WI | 12-101-29740 | Plugged & abandoned | Injection | Lawrence, IL | Nevco Systems, Inc. | 1,930 ft |
| Wayne Heirs 1 | 12-101-05389 | Active | Oil | Lawrence, IL | Nevco Systems, Inc. | 0 ft |
| Clark, Harley 1-WI | 12-101-05427 | Active | Injection | Lawrence, IL | Nevco Systems, Inc. | 0 ft |
Deepest first where depth is published. See all 6 wells →
Frequently asked questions
How many wells does Nevco Systems operate?
Nevco Systems is the operator of record for 6 catalogued oil & gas wells, with the largest concentration in Illinois (6). Only wells in states WellCensus has ingested are counted.
How many of Nevco Systems's wells are still active?
3 of Nevco Systems's catalogued wells are active; 3 are plugged & abandoned.
In which states does Nevco Systems operate wells?
Nevco Systems is the operator of record for wells in Illinois (6).
Does Nevco Systems operate mostly oil or gas wells?
3 of Nevco Systems's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Nevco Systems's deepest well?
Among wells with a published depth, Mahrenholz 5 in Lawrence, IL is the deepest at 2,412 ft.
Where Nevco Systems'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, “Nevco Systems — well portfolio”, https://wellcensus.com/operators/nevco-systems-103809 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).