Schaefer Oil
Operator of record for 179 catalogued wells across 2 states. Every well below links to its full registry page.
Filed as: Schaefer Oil Co., Inc. · Schaefer Oil Company
At a glance
Schaefer Oil is the operator of record for 179 catalogued U.S. oil & gas wells in 2 states. 16 (9%) are active, 146 (82%) plugged & abandoned and 3 flagged as orphaned. Its largest concentration is in Illinois, with 176 wells (98% of its portfolio).
Wells operated
179
Active
16
Plugged
146
Orphaned
3
Portfolio by state
| State | Wells |
|---|---|
| Illinois | 176 |
| California | 3 |
Well mix
- Oil wells
- 91
- Gas wells
- 4
- Shut-in
- 0
- Active share
- 9%
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Claim your operator profileWhere does Schaefer Oil operate?
Schaefer Oil's catalogued wells are spread across 2 states: Illinois (176) and California (3). Its 176 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 Schaefer Oil’s wells are active, plugged or orphaned?
9% of Schaefer Oil's catalogued wells are active, 20 percentage points below the national share of 29%. 82% are plugged & abandoned, against 47% nationally. 3 wells filed under this name are flagged as orphaned — unplugged, with no operator able to plug them.
What kinds of wells does Schaefer Oil operate?
By product class, 91 (51%) are oil wells and 4 (2%) gas wells; nationally the shares are 43% and 17%. The deepest of its wells with a published depth is Pinnell 1 in Coles, IL at 3,262 ft. The wells listed below sit in Coles (IL), Richland (IL), Clay (IL) and Jasper (IL). State filings spell the name 2 ways; WellCensus merges exact-normalized spellings only, so subsidiaries and affiliates keep their own pages.
Notable wells operated by Schaefer Oil
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Pinnell 1 | 12-029-01767 | Plugged & abandoned | Oil | Coles, IL | Schaefer Oil Company | 3,262 ft |
| Homann 1-A | 12-029-00632 | Other status | Gas | Coles, IL | Schaefer Oil Company | 3,254 ft |
| Bresee 1 | 12-029-01729 | Other status | Oil | Coles, IL | Schaefer Oil Company | 3,190 ft |
| Herkimer 6-A | 12-029-01038 | Plugged & abandoned | Gas | Coles, IL | Schaefer Oil Company | 3,175 ft |
| Herkimer 2-A | 12-029-01034 | Active | Gas | Coles, IL | Schaefer Oil Company | 3,142 ft |
| Craig 1-A | 12-029-02226 | Active | Gas | Coles, IL | Schaefer Oil Company | 3,109 ft |
| Heino Selman-Esders 1 | 12-159-00644 | Plugged & abandoned | Other type | Richland, IL | Schaefer Oil Company | 3,097 ft |
| Bresee 3 | 12-029-01754 | Other status | Oil | Coles, IL | Schaefer Oil Company | 3,075 ft |
| Bresee 2 | 12-029-01731 | Other status | Oil | Coles, IL | Schaefer Oil Company | 3,065 ft |
| Young 1 | 12-025-01061 | Plugged & abandoned | Other type | Clay, IL | Schaefer Oil Company | 3,000 ft |
| Kepley 1 | 12-079-01222 | Plugged & abandoned | Other type | Jasper, IL | Schaefer Oil Company | 2,977 ft |
| Bergbower, Leo 1 | 12-079-01274 | Plugged & abandoned | Other type | Jasper, IL | Schaefer Oil Company | 2,968 ft |
Deepest first where depth is published. See all 179 wells →
Frequently asked questions
How many wells does Schaefer Oil operate?
Schaefer Oil is the operator of record for 179 catalogued oil & gas wells, with the largest concentration in Illinois (176). Only wells in states WellCensus has ingested are counted.
How many of Schaefer Oil's wells are still active?
16 of Schaefer Oil's catalogued wells are active; 146 are plugged & abandoned and 3 are flagged as orphaned.
In which states does Schaefer Oil operate wells?
Schaefer Oil is the operator of record for wells in Illinois (176) and California (3).
Does Schaefer Oil operate mostly oil or gas wells?
91 of Schaefer Oil's catalogued wells are oil wells and 4 are gas wells; the rest are injection, service or unclassified wells.
What is Schaefer Oil's deepest well?
Among wells with a published depth, Pinnell 1 in Coles, IL is the deepest at 3,262 ft.
Where Schaefer 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, “Schaefer Oil — well portfolio”, https://wellcensus.com/operators/schaefer-oil-5489 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).