Ameren Illinois
Operator of record for 49 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Ameren Illinois is the operator of record for 49 catalogued U.S. oil & gas wells in 1 state. 27 (55%) are active, 0 (0%) plugged & abandoned. Its largest concentration is in Illinois, with 49 wells (100% of its portfolio).
Wells operated
49
Active
27
Plugged
0
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Illinois | 49 |
Well mix
- Oil wells
- 0
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 55%
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Claim your operator profileWhere does Ameren Illinois operate?
Ameren Illinois's catalogued wells are spread across 1 state: Illinois (49). Its 49 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 Ameren Illinois’s wells are active, plugged or orphaned?
55% of Ameren Illinois's catalogued wells are active, 26 percentage points above the national share of 29%. 0% are plugged & abandoned, against 47% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Ameren Illinois 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 Tilden 4-HOR in Washington, IL at 4,067 ft. The wells listed below sit in Washington (IL), Mcdonough (IL), Williamson (IL), Bond (IL), Peoria (IL) and Randolph (IL).
Notable wells operated by Ameren Illinois
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Tilden 4-HOR | 12-189-24939 | Active | Injection | Washington, IL | Ameren Illinois Company | 4,067 ft |
| Tilden 5-HOR | 12-189-24940 | Active | Injection | Washington, IL | Ameren Illinois Company | 3,750 ft |
| Tilden 6-HOR | 12-189-24941 | Active | Injection | Washington, IL | Ameren Illinois Company | 3,477 ft |
| Knappenberger, Burdette SM-18 | 12-109-22738 | Active | Injection | Mcdonough, IL | Ameren Illinois Company | 2,896 ft |
| Tilden 9-HOR | 12-189-24946 | Active | Injection | Washington, IL | Ameren Illinois Company | 2,884 ft |
| Tilden 8-HOR | 12-189-24945 | Active | Injection | Washington, IL | Ameren Illinois Company | 2,645 ft |
| New River Royalty 1 | 12-199-24148 | Active | Injection | Williamson, IL | Ameren Illinois Company | 2,240 ft |
| Hookdale D. W. 1 | 12-005-23822 | Active | Injection | Bond, IL | Ameren Illinois Company | 1,237 ft |
| Peters 1 | 12-143-00700 | Other status | Other type | Peoria, IL | Ameren Illinois Company | 1,203 ft |
| Eden 1-HOR | 12-157-26814 | Active | Injection | Randolph, IL | Ameren Illinois Company | 903 ft |
| Eden 2-HOR | 12-157-26815 | Active | Injection | Randolph, IL | Ameren Illinois Company | 898 ft |
| Eden 3-HOR | 12-157-26816 | Active | Injection | Randolph, IL | Ameren Illinois Company | 890 ft |
Deepest first where depth is published. See all 49 wells →
Frequently asked questions
How many wells does Ameren Illinois operate?
Ameren Illinois is the operator of record for 49 catalogued oil & gas wells, with the largest concentration in Illinois (49). Only wells in states WellCensus has ingested are counted.
How many of Ameren Illinois's wells are still active?
27 of Ameren Illinois's catalogued wells are active; 0 are plugged & abandoned.
In which states does Ameren Illinois operate wells?
Ameren Illinois is the operator of record for wells in Illinois (49).
Does Ameren Illinois operate mostly oil or gas wells?
0 of Ameren Illinois's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Ameren Illinois's deepest well?
Among wells with a published depth, Tilden 4-HOR in Washington, IL is the deepest at 4,067 ft.
Where Ameren Illinois'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, “Ameren Illinois — well portfolio”, https://wellcensus.com/operators/ameren-illinois-91406 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).