Callahan John J
Operator of record for 13 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Callahan John J is the operator of record for 13 catalogued U.S. oil & gas wells in 1 state. 1 (8%) are active, 12 (92%) plugged & abandoned. Its largest concentration is in Illinois, with 13 wells (100% of its portfolio).
Wells operated
13
Active
1
Plugged
12
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Illinois | 13 |
Well mix
- Oil wells
- 7
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 8%
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Claim your operator profileWhere does Callahan John J operate?
Callahan John J's catalogued wells are spread across 1 state: Illinois (13). Its 13 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 Callahan John J’s wells are active, plugged or orphaned?
8% of Callahan John J's catalogued wells are active, 21 percentage points below the national share of 29%. 92% are plugged & abandoned, against 47% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Callahan John J operate?
By product class, 7 (54%) 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 Rennekamp, Mary 4 in Effingham, IL at 2,843 ft. The wells listed below sit in Effingham (IL), Clay (IL) and Coles (IL).
Notable wells operated by Callahan John J
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Rennekamp, Mary 4 | 12-049-00947 | Plugged & abandoned | Oil | Effingham, IL | Callahan, John J. | 2,843 ft |
| Bahrns, Henry 1 | 12-049-00967 | Plugged & abandoned | Other type | Effingham, IL | Callahan, John J. | 2,577 ft |
| Veith 2 | 12-025-03808 | Plugged & abandoned | Oil | Clay, IL | Callahan, John J. | 2,535 ft |
| Behrens 3 | 12-025-03853 | Plugged & abandoned | Oil | Clay, IL | Callahan, John J. | 2,534 ft |
| Adams 1 | 12-025-03640 | Plugged & abandoned | Other type | Clay, IL | Callahan, John J. | 2,500 ft |
| Kinsel 3 | 12-025-03646 | Plugged & abandoned | Other type | Clay, IL | Callahan, John J. | 2,489 ft |
| Rush 2 | 12-049-00774 | Plugged & abandoned | Oil | Effingham, IL | Callahan, John J. | 2,476 ft |
| Denton 1 | 12-049-00771 | Plugged & abandoned | Oil | Effingham, IL | Callahan, John J. | 2,469 ft |
| Kinsel 2 | 12-025-00537 | Active | Oil | Clay, IL | Callahan, John J. | 2,466 ft |
| Kinsel 4 | 12-025-03647 | Plugged & abandoned | Other type | Clay, IL | Callahan, John J. | 2,465 ft |
| Prather, Clarence 1 | 12-025-03648 | Plugged & abandoned | Other type | Clay, IL | Callahan, John J. | 2,340 ft |
| Ehrsam Etal 1 | 12-029-00320 | Plugged & abandoned | Oil | Coles, IL | Callahan, John J. | 1,951 ft |
Deepest first where depth is published. See all 13 wells →
Frequently asked questions
How many wells does Callahan John J operate?
Callahan John J is the operator of record for 13 catalogued oil & gas wells, with the largest concentration in Illinois (13). Only wells in states WellCensus has ingested are counted.
How many of Callahan John J's wells are still active?
1 of Callahan John J's catalogued wells are active; 12 are plugged & abandoned.
In which states does Callahan John J operate wells?
Callahan John J is the operator of record for wells in Illinois (13).
Does Callahan John J operate mostly oil or gas wells?
7 of Callahan John J's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Callahan John J's deepest well?
Among wells with a published depth, Rennekamp, Mary 4 in Effingham, IL is the deepest at 2,843 ft.
Where Callahan John J'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, “Callahan John J — well portfolio”, https://wellcensus.com/operators/callahan-john-j-93333 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).