Hollingsworth
Operator of record for 5 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Hollingsworth is the operator of record for 5 catalogued U.S. oil & gas wells in 1 state. 1 (20%) are active, 4 (80%) plugged & abandoned. Its largest concentration is in Illinois, with 5 wells (100% of its portfolio).
Wells operated
5
Active
1
Plugged
4
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Illinois | 5 |
Well mix
- Oil wells
- 4
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 20%
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Claim Hollingsworth to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Hollingsworth operate?
Hollingsworth'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 (location indexes) and in states without a registry ingest are not yet attributed to any operator.
How many of Hollingsworth’s wells are active, plugged or orphaned?
20% of Hollingsworth's catalogued wells are active, 10 percentage points below the national share of 30%. 80% are plugged & abandoned, against 48% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Hollingsworth operate?
By product class, 4 (80%) 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 Kalkbrenner 11 in Marion, IL at 3,444 ft. The wells listed below sit in Marion (IL), Richland (IL) and Crawford (IL).
Notable wells operated by Hollingsworth
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Kalkbrenner 11 | 12-121-01000 | Plugged & abandoned | Oil | Marion, IL | Hollingsworth Inc | 3,444 ft |
| Kalkbrenner 13 | 12-121-02463 | Active | Oil | Marion, IL | Hollingsworth Inc | 3,433 ft |
| Kalkbrenner 12 | 12-121-02462 | Plugged & abandoned | Oil | Marion, IL | Hollingsworth Inc | 3,361 ft |
| Wagner A 1 | 12-159-01759 | Plugged & abandoned | Other type | Richland, IL | Hollingsworth Inc | 3,248 ft |
| Dennis, Peter Heirs 31 | 12-033-09622 | Plugged & abandoned | Oil | Crawford, IL | Hollingsworth Inc | 1,810 ft |
Deepest first where depth is published. See all 5 wells →
Frequently asked questions
How many wells does Hollingsworth operate?
Hollingsworth 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 Hollingsworth's wells are still active?
1 of Hollingsworth's catalogued wells are active; 4 are plugged & abandoned.
In which states does Hollingsworth operate wells?
Hollingsworth is the operator of record for wells in Illinois (5).
Does Hollingsworth operate mostly oil or gas wells?
4 of Hollingsworth's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Hollingsworth's deepest well?
Among wells with a published depth, Kalkbrenner 11 in Marion, IL is the deepest at 3,444 ft.
Where Hollingsworth'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, “Hollingsworth — well portfolio”, https://wellcensus.com/operators/hollingsworth-96160 (data as of October 28, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).