Dupo Oil
Operator of record for 2 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Dupo Oil is the operator of record for 2 catalogued U.S. oil & gas wells in 1 state. 1 (50%) are active, 1 (50%) plugged & abandoned. Its largest concentration is in Illinois, with 2 wells (100% of its portfolio).
Wells operated
2
Active
1
Plugged
1
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Illinois | 2 |
Well mix
- Oil wells
- 0
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 50%
Is this your company?
Claim Dupo Oil to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Dupo Oil operate?
Dupo Oil's catalogued wells are spread across 1 state: Illinois (2). Its 2 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 Dupo Oil’s wells are active, plugged or orphaned?
50% of Dupo Oil's catalogued wells are active, 21 percentage points above the national share of 29%. 50% are plugged & abandoned, against 47% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Dupo Oil operate?
By product class, 0 (0%) 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 Gaskill 6-SWD in St. Clair, IL at 1,000 ft.
Notable wells operated by Dupo Oil
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Gaskill 6-SWD | 12-163-01344 | Active | Injection | St. Clair, IL | Dupo Oil Co. | 1,000 ft |
| Thielmann 3 | 12-163-01718 | Plugged & abandoned | Other type | St. Clair, IL | Dupo Oil Co. | 675 ft |
Deepest first where depth is published. See all 2 wells →
Frequently asked questions
How many wells does Dupo Oil operate?
Dupo Oil is the operator of record for 2 catalogued oil & gas wells, with the largest concentration in Illinois (2). Only wells in states WellCensus has ingested are counted.
How many of Dupo Oil's wells are still active?
1 of Dupo Oil's catalogued wells are active; 1 are plugged & abandoned.
In which states does Dupo Oil operate wells?
Dupo Oil is the operator of record for wells in Illinois (2).
Does Dupo Oil operate mostly oil or gas wells?
0 of Dupo Oil's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Dupo Oil's deepest well?
Among wells with a published depth, Gaskill 6-SWD in St. Clair, IL is the deepest at 1,000 ft.
Where Dupo Oil'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, “Dupo Oil — well portfolio”, https://wellcensus.com/operators/dupo-oil-108973 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).