Cleff Oil Producers
Operator of record for 3 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Cleff Oil Producers is the operator of record for 3 catalogued U.S. oil & gas wells in 1 state. 2 (67%) are active, 1 (33%) plugged & abandoned. Its largest concentration is in Illinois, with 3 wells (100% of its portfolio).
Wells operated
3
Active
2
Plugged
1
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Illinois | 3 |
Well mix
- Oil wells
- 0
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 67%
Is this your company?
Claim Cleff Oil Producers to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Cleff Oil Producers operate?
Cleff Oil Producers's catalogued wells are spread across 1 state: Illinois (3). Its 3 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 (location indexes) and in states without a registry ingest are not yet attributed to any operator.
How many of Cleff Oil Producers’s wells are active, plugged or orphaned?
67% of Cleff Oil Producers's catalogued wells are active, 36 percentage points above the national share of 30%. 33% are plugged & abandoned, against 48% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Cleff Oil Producers operate?
By product class, 0 (0%) are oil wells and 0 (0%) gas wells; nationally the shares are 45% and 18%. The deepest of its wells with a published depth is Leitch 3 in Madison, IL at 1,886 ft.
Notable wells operated by Cleff Oil Producers
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Leitch 3 | 12-119-02091 | Plugged & abandoned | Other type | Madison, IL | Cleff Oil Producers, Inc | 1,886 ft |
| Leitch, Mae Olive 7 | 12-119-01064 | Active | Injection | Madison, IL | Cleff Oil Producers, Inc | 589 ft |
| Leitch, Mae Olive 6 | 12-119-01053 | Active | Injection | Madison, IL | Cleff Oil Producers, Inc | 581 ft |
Deepest first where depth is published. See all 3 wells →
Frequently asked questions
How many wells does Cleff Oil Producers operate?
Cleff Oil Producers is the operator of record for 3 catalogued oil & gas wells, with the largest concentration in Illinois (3). Only wells in states WellCensus has ingested are counted.
How many of Cleff Oil Producers's wells are still active?
2 of Cleff Oil Producers's catalogued wells are active; 1 are plugged & abandoned.
In which states does Cleff Oil Producers operate wells?
Cleff Oil Producers is the operator of record for wells in Illinois (3).
Does Cleff Oil Producers operate mostly oil or gas wells?
0 of Cleff Oil Producers's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Cleff Oil Producers's deepest well?
Among wells with a published depth, Leitch 3 in Madison, IL is the deepest at 1,886 ft.
Where Cleff Oil Producers'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 28, 2026 — WellCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.
Cite as: WellCensus, “Cleff Oil Producers — well portfolio”, https://wellcensus.com/operators/cleff-oil-producers-105687 (data as of October 28, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).