Cahill & Smith
Operator of record for 25 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Cahill & Smith is the operator of record for 25 catalogued U.S. oil & gas wells in 1 state. 2 (8%) are active, 23 (92%) plugged & abandoned. Its largest concentration is in Illinois, with 25 wells (100% of its portfolio).
Wells operated
25
Active
2
Plugged
23
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Illinois | 25 |
Well mix
- Oil wells
- 8
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 8%
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Claim your operator profileWhere does Cahill & Smith operate?
Cahill & Smith's catalogued wells are spread across 1 state: Illinois (25). Its 25 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 Cahill & Smith’s wells are active, plugged or orphaned?
8% of Cahill & Smith'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 Cahill & Smith operate?
By product class, 8 (32%) 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 Schneider 1 in Bond, IL at 2,313 ft. The wells listed below sit in Bond (IL), Madison (IL) and Macoupin (IL).
Notable wells operated by Cahill & Smith
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Schneider 1 | 12-005-00795 | Plugged & abandoned | Other type | Bond, IL | Cahill & Smith | 2,313 ft |
| Trippel 1 | 12-005-00904 | Plugged & abandoned | Oil | Bond, IL | Cahill & Smith | 1,132 ft |
| Miller-Sugg 5 | 12-005-00974 | Plugged & abandoned | Oil | Bond, IL | Cahill & Smith | 1,082 ft |
| Schmidt 1 | 12-119-00967 | Plugged & abandoned | Other type | Madison, IL | Cahill & Smith | 899 ft |
| Mansholt 1 | 12-119-00989 | Plugged & abandoned | Other type | Madison, IL | Cahill & Smith | 818 ft |
| Sawyer 1 | 12-117-00687 | Plugged & abandoned | Other type | Macoupin, IL | Cahill & Smith | 672 ft |
| Brown, Bell 5 | 12-005-00808 | Plugged & abandoned | Oil | Bond, IL | Cahill & Smith | 660 ft |
| Brown, Belle 2 | 12-005-00737 | Plugged & abandoned | Oil | Bond, IL | Cahill & Smith | 648 ft |
| Brown, Bell 2-W | 12-005-00871 | Plugged & abandoned | Injection | Bond, IL | Cahill & Smith | 632 ft |
| File 5 | 12-005-00917 | Plugged & abandoned | Injection | Bond, IL | Cahill & Smith | 632 ft |
| Brown, Bell 3 | 12-005-22088 | Plugged & abandoned | Oil | Bond, IL | Cahill & Smith | 632 ft |
| File 6 | 12-005-00921 | Plugged & abandoned | Injection | Bond, IL | Cahill & Smith | 627 ft |
Deepest first where depth is published. See all 25 wells →
Frequently asked questions
How many wells does Cahill & Smith operate?
Cahill & Smith is the operator of record for 25 catalogued oil & gas wells, with the largest concentration in Illinois (25). Only wells in states WellCensus has ingested are counted.
How many of Cahill & Smith's wells are still active?
2 of Cahill & Smith's catalogued wells are active; 23 are plugged & abandoned.
In which states does Cahill & Smith operate wells?
Cahill & Smith is the operator of record for wells in Illinois (25).
Does Cahill & Smith operate mostly oil or gas wells?
8 of Cahill & Smith's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Cahill & Smith's deepest well?
Among wells with a published depth, Schneider 1 in Bond, IL is the deepest at 2,313 ft.
Where Cahill & Smith'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, “Cahill & Smith — well portfolio”, https://wellcensus.com/operators/cahill-smith-91291 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).