Swan King Oil
Operator of record for 11 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Swan King Oil is the operator of record for 11 catalogued U.S. oil & gas wells in 1 state. None is listed as active, 10 (91%) are plugged & abandoned. Its largest concentration is in Illinois, with 11 wells (100% of its portfolio).
Wells operated
11
Active
0
Plugged
10
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Illinois | 11 |
Well mix
- Oil wells
- 3
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 0%
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Claim your operator profileWhere does Swan King Oil operate?
Swan King Oil's catalogued wells are spread across 1 state: Illinois (11). Its 11 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 Swan King Oil’s wells are active, plugged or orphaned?
0% of Swan King Oil's catalogued wells are active, 29 percentage points below the national share of 29%. 91% are plugged & abandoned, against 47% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Swan King Oil operate?
By product class, 3 (27%) 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 Spencer D E 3 in Wayne, IL at 3,215 ft. The wells listed below sit in Wayne (IL), White (IL), Bond (IL), Marion (IL), Gallatin (IL) and Clark (IL).
Notable wells operated by Swan King Oil
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Spencer D E 3 | 12-191-00104 | Plugged & abandoned | Oil | Wayne, IL | Swan-King Oil Co. | 3,215 ft |
| Spencer D E 4 | 12-191-05845 | Other status | Oil | Wayne, IL | Swan-King Oil Co. | 3,215 ft |
| Lawrence Mary E 1 | 12-193-04164 | Plugged & abandoned | Other type | White, IL | Swan-King Oil Co. | 3,107 ft |
| Brown 1 | 12-005-00188 | Plugged & abandoned | Other type | Bond, IL | Swan-King Oil Co. | 2,460 ft |
| Martin Cemetery 1 | 12-121-00857 | Plugged & abandoned | Other type | Marion, IL | Swan-King Oil Co. | 2,252 ft |
| Bilek J V 1 | 12-121-00679 | Plugged & abandoned | Other type | Marion, IL | Swan-King Oil Co. | 2,208 ft |
| Stoleth A J 2-A | 12-059-00598 | Plugged & abandoned | Other type | Gallatin, IL | Swan-King Oil Co. | 2,180 ft |
| Kagy etal 5 | 12-121-27939 | Plugged & abandoned | Injection | Marion, IL | Swan-King Oil Co. | 2,157 ft |
| Kotva Heirs 1 | 12-121-00855 | Plugged & abandoned | Oil | Marion, IL | Swan-King Oil Co. | 2,104 ft |
| Claypool 1 | 12-023-01120 | Plugged & abandoned | Other type | Clark, IL | Swan-King Oil Co. | 1,687 ft |
| Williams 1 | 12-121-00853 | Plugged & abandoned | Other type | Marion, IL | Swan-King Oil Co. | 1,680 ft |
Deepest first where depth is published. See all 11 wells →
Frequently asked questions
How many wells does Swan King Oil operate?
Swan King Oil is the operator of record for 11 catalogued oil & gas wells, with the largest concentration in Illinois (11). Only wells in states WellCensus has ingested are counted.
How many of Swan King Oil's wells are still active?
0 of Swan King Oil's catalogued wells are active; 10 are plugged & abandoned.
In which states does Swan King Oil operate wells?
Swan King Oil is the operator of record for wells in Illinois (11).
Does Swan King Oil operate mostly oil or gas wells?
3 of Swan King Oil's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Swan King Oil's deepest well?
Among wells with a published depth, Spencer D E 3 in Wayne, IL is the deepest at 3,215 ft.
Where Swan King 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, “Swan King Oil — well portfolio”, https://wellcensus.com/operators/swan-king-oil-67178 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).