Stewart Oil
Operator of record for 196 catalogued wells across 6 states. Every well below links to its full registry page.
Filed as: STEWART OIL CO · STEWART OIL CO. · STEWART OIL COMPANY · Stewart Oil Co. · …
At a glance
Stewart Oil is the operator of record for 196 catalogued U.S. oil & gas wells in 6 states. 11 (6%) are active, 162 (83%) plugged & abandoned and 4 flagged as orphaned. Its largest concentration is in Illinois, with 163 wells (83% of its portfolio).
Wells operated
196
Active
11
Plugged
162
Orphaned
4
Portfolio by state
| State | Wells |
|---|---|
| Illinois | 163 |
| Michigan | 17 |
| Louisiana | 7 |
| Kansas | 5 |
| Oklahoma | 3 |
| Mississippi | 1 |
Well mix
- Oil wells
- 79
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 6%
Is this your company?
Claim Stewart Oil to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Stewart Oil operate?
Stewart Oil's catalogued wells are spread across 6 states: Illinois (163), Michigan (17), Louisiana (7), Kansas (5) and Oklahoma (3) and 1 more. Its 163 Illinois wells are 0.1% 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 Stewart Oil’s wells are active, plugged or orphaned?
6% of Stewart Oil's catalogued wells are active, 23 percentage points below the national share of 29%. 83% are plugged & abandoned, against 47% nationally. 4 wells filed under this name are flagged as orphaned — unplugged, with no operator able to plug them.
What kinds of wells does Stewart Oil operate?
By product class, 79 (40%) 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 Weidman & Mcclintic 1 in Isabella, MI at 3,765 ft. The wells listed below sit in Isabella (MI), Hamilton (IL) and Wayne (IL). State filings spell the name 5 ways; WellCensus merges exact-normalized spellings only, so subsidiaries and affiliates keep their own pages.
Notable wells operated by Stewart Oil
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Weidman & Mcclintic 1 | 21-073-07894 | Other status | Other type | Isabella, MI | Stewart Oil Co | 3,765 ft |
| Dial, Ada 4 | 12-065-01643 | Orphaned | Oil | Hamilton, IL | Stewart Oil Company | 3,602 ft |
| Smith, S.L. Heirs 1 | 12-065-02858 | Plugged & abandoned | Other type | Hamilton, IL | Stewart Oil Company | 3,530 ft |
| Hungate Gene 1 | 12-065-02432 | Plugged & abandoned | Other type | Hamilton, IL | Stewart Oil Company | 3,491 ft |
| Carter Tom 1 | 12-065-02446 | Plugged & abandoned | Other type | Hamilton, IL | Stewart Oil Company | 3,460 ft |
| Flannigan Unit Water Source 1 | 12-065-00567 | Plugged & abandoned | Other type | Hamilton, IL | Stewart Oil Company | 3,430 ft |
| Cantrell Henry 1 | 12-065-02757 | Plugged & abandoned | Oil | Hamilton, IL | Stewart Oil Company | 3,414 ft |
| Smith Luther 2 | 12-191-06931 | Plugged & abandoned | Other type | Wayne, IL | Stewart Oil Company | 3,403 ft |
| Osborne Clyde W 3 | 12-191-06924 | Plugged & abandoned | Oil | Wayne, IL | Stewart Oil Company | 3,384 ft |
| Sloan Wilford 2 | 12-065-02856 | Plugged & abandoned | Other type | Hamilton, IL | Stewart Oil Company | 3,384 ft |
| Bothwell Marion 2 | 12-191-06841 | Plugged & abandoned | Oil | Wayne, IL | Stewart Oil Company | 3,381 ft |
| Osborne, Cloyd W. 1 | 12-191-06922 | Plugged & abandoned | Oil | Wayne, IL | Stewart Oil Company | 3,381 ft |
Deepest first where depth is published. See all 196 wells →
Frequently asked questions
How many wells does Stewart Oil operate?
Stewart Oil is the operator of record for 196 catalogued oil & gas wells, with the largest concentration in Illinois (163). Only wells in states WellCensus has ingested are counted.
How many of Stewart Oil's wells are still active?
11 of Stewart Oil's catalogued wells are active; 162 are plugged & abandoned and 4 are flagged as orphaned.
In which states does Stewart Oil operate wells?
Stewart Oil is the operator of record for wells in Illinois (163), Michigan (17), Louisiana (7), Kansas (5), Oklahoma (3) and Mississippi (1).
Does Stewart Oil operate mostly oil or gas wells?
79 of Stewart Oil's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Stewart Oil's deepest well?
Among wells with a published depth, Weidman & Mcclintic 1 in Isabella, MI is the deepest at 3,765 ft.
Where Stewart Oil's wells are
- Oil & gas wells in Illinois· 163 operated by Stewart Oil
- Oil & gas wells in Michigan· 17 operated by Stewart Oil
- Oil & gas wells in Louisiana· 7 operated by Stewart Oil
- Oil & gas wells in Kansas· 5 operated by Stewart Oil
- Oil & gas wells in Oklahoma· 3 operated by Stewart Oil
- Oil & gas wells in Mississippi· 1 operated by Stewart Oil
- Largest U.S. well operators
- All well operators
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, “Stewart Oil — well portfolio”, https://wellcensus.com/operators/stewart-oil-7363 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).