Grossmann Walter G
Operator of record for 5 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Grossmann Walter G is the operator of record for 5 catalogued U.S. oil & gas wells in 1 state. None is listed as active, 5 (100%) are plugged & abandoned. Its largest concentration is in Illinois, with 5 wells (100% of its portfolio).
Wells operated
5
Active
0
Plugged
5
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Illinois | 5 |
Well mix
- Oil wells
- 0
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 0%
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Claim your operator profileWhere does Grossmann Walter G operate?
Grossmann Walter G's catalogued wells are spread across 1 state: Illinois (5). Its 5 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 Grossmann Walter G’s wells are active, plugged or orphaned?
0% of Grossmann Walter G's catalogued wells are active, 29 percentage points below the national share of 29%. 100% are plugged & abandoned, against 47% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Grossmann Walter G operate?
By product class, 0 (0%) 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 Mueller-Miller Comm. 1 in St. Clair, IL at 1,530 ft. The wells listed below sit in St. Clair (IL), Macoupin (IL), Madison (IL) and Pike (IL).
Notable wells operated by Grossmann Walter G
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Mueller-Miller Comm. 1 | 12-163-01389 | Plugged & abandoned | Other type | St. Clair, IL | Grossmann Walter G | 1,530 ft |
| Mueller, 1 | 12-117-00994 | Plugged & abandoned | Other type | Macoupin, IL | Grossmann Walter G | 645 ft |
| Gross 1 | 12-119-01540 | Plugged & abandoned | Other type | Madison, IL | Grossmann Walter G | 620 ft |
| Kaufman 1 | 12-119-01541 | Plugged & abandoned | Other type | Madison, IL | Grossmann Walter G | 604 ft |
| Dehart, J. Walter 1 | 12-149-00120 | Plugged & abandoned | Other type | Pike, IL | Grossmann Walter G | 340 ft |
Deepest first where depth is published. See all 5 wells →
Frequently asked questions
How many wells does Grossmann Walter G operate?
Grossmann Walter G is the operator of record for 5 catalogued oil & gas wells, with the largest concentration in Illinois (5). Only wells in states WellCensus has ingested are counted.
How many of Grossmann Walter G's wells are still active?
0 of Grossmann Walter G's catalogued wells are active; 5 are plugged & abandoned.
In which states does Grossmann Walter G operate wells?
Grossmann Walter G is the operator of record for wells in Illinois (5).
Does Grossmann Walter G operate mostly oil or gas wells?
0 of Grossmann Walter G's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Grossmann Walter G's deepest well?
Among wells with a published depth, Mueller-Miller Comm. 1 in St. Clair, IL is the deepest at 1,530 ft.
Where Grossmann Walter G'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, “Grossmann Walter G — well portfolio”, https://wellcensus.com/operators/grossmann-walter-g-105451 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).