Henderson & Willis
Operator of record for 7 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Henderson & Willis is the operator of record for 7 catalogued U.S. oil & gas wells in 1 state. 2 (29%) are active, 4 (57%) plugged & abandoned and 1 flagged as orphaned. Its largest concentration is in Illinois, with 7 wells (100% of its portfolio).
Wells operated
7
Active
2
Plugged
4
Orphaned
1
Portfolio by state
| State | Wells |
|---|---|
| Illinois | 7 |
Well mix
- Oil wells
- 4
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 29%
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Claim your operator profileWhere does Henderson & Willis operate?
Henderson & Willis's catalogued wells are spread across 1 state: Illinois (7). Its 7 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 Henderson & Willis’s wells are active, plugged or orphaned?
29% of Henderson & Willis's catalogued wells are active, close to the national share of 29%. 57% are plugged & abandoned, against 47% nationally. 1 wells filed under this name are flagged as orphaned — unplugged, with no operator able to plug them.
What kinds of wells does Henderson & Willis operate?
By product class, 4 (57%) 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 Yount 1 in Clay, IL at 3,018 ft. The wells listed below sit in Clay (IL) and Crawford (IL).
Notable wells operated by Henderson & Willis
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Yount 1 | 12-025-00531 | Plugged & abandoned | Oil | Clay, IL | Henderson & Willis | 3,018 ft |
| Conover, May etal 1 | 12-033-08888 | Plugged & abandoned | Other type | Crawford, IL | Henderson & Willis | 1,859 ft |
| Walters-Conover Unit 1 | 12-033-08908 | Active | Oil | Crawford, IL | Henderson & Willis | 1,487 ft |
| Walters 2 | 12-033-09070 | Active | Oil | Crawford, IL | Henderson & Willis | 1,229 ft |
| Conover 2 | 12-033-09022 | Plugged & abandoned | Other type | Crawford, IL | Henderson & Willis | 1,228 ft |
| Dix-Conover Comm. 1 | 12-033-08954 | Orphaned | Oil | Crawford, IL | Henderson & Willis | 1,223 ft |
| Dix-Walters 1 | 12-033-09147 | Plugged & abandoned | Other type | Crawford, IL | Henderson & Willis | 1,217 ft |
Deepest first where depth is published. See all 7 wells →
Frequently asked questions
How many wells does Henderson & Willis operate?
Henderson & Willis is the operator of record for 7 catalogued oil & gas wells, with the largest concentration in Illinois (7). Only wells in states WellCensus has ingested are counted.
How many of Henderson & Willis's wells are still active?
2 of Henderson & Willis's catalogued wells are active; 4 are plugged & abandoned and 1 are flagged as orphaned.
In which states does Henderson & Willis operate wells?
Henderson & Willis is the operator of record for wells in Illinois (7).
Does Henderson & Willis operate mostly oil or gas wells?
4 of Henderson & Willis's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Henderson & Willis's deepest well?
Among wells with a published depth, Yount 1 in Clay, IL is the deepest at 3,018 ft.
Where Henderson & Willis'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, “Henderson & Willis — well portfolio”, https://wellcensus.com/operators/henderson-willis-66346 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).