Duff Oil
Operator of record for 12 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Duff Oil is the operator of record for 12 catalogued U.S. oil & gas wells in 1 state. None is listed as active, 10 (83%) are plugged & abandoned. Its largest concentration is in Michigan, with 12 wells (100% of its portfolio).
Wells operated
12
Active
0
Plugged
10
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Michigan | 12 |
Well mix
- Oil wells
- 0
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 0%
Is this your company?
Claim Duff Oil to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Duff Oil operate?
Duff Oil's catalogued wells are spread across 1 state: Michigan (12). Its 12 Michigan wells are 0.0% of the 85,673 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 Duff Oil’s wells are active, plugged or orphaned?
0% of Duff Oil's catalogued wells are active, 29 percentage points below the national share of 29%. 83% are plugged & abandoned, against 47% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Duff 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 Homestake & Simpson 1-3a in Kalkaska, MI at 7,375 ft. The wells listed below sit in Kalkaska (MI), Grand Traverse (MI), Wexford (MI), Manistee (MI) and Otsego (MI).
Notable wells operated by Duff Oil
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Homestake & Simpson 1-3a | 21-079-42098 | Plugged & abandoned | Other type | Kalkaska, MI | Duff Oil Co | 7,375 ft |
| Dery 1-4 | 21-079-41809 | Plugged & abandoned | Other type | Kalkaska, MI | Duff Oil Co | 6,692 ft |
| Guernsey & Bossingham 1-31 | 21-055-42841 | Plugged & abandoned | Other type | Grand Traverse, MI | Duff Oil Co | 6,563 ft |
| Elzinga & Duff 1-2e | 21-165-40774 | Plugged & abandoned | Other type | Wexford, MI | Duff Oil Co | 6,482 ft |
| Luther 1-2 | 21-165-43430 | Plugged & abandoned | Other type | Wexford, MI | Duff Oil Co | 6,468 ft |
| Loney 1-2 | 21-165-41181 | Plugged & abandoned | Other type | Wexford, MI | Duff Oil Co | 6,400 ft |
| Gibler & Harkins 1-14 | 21-055-40465 | Plugged & abandoned | Other type | Grand Traverse, MI | Duff Oil Co | 6,092 ft |
| Duff & Grant 1-14a | 21-055-42579 | Plugged & abandoned | Other type | Grand Traverse, MI | Duff Oil Co | 6,079 ft |
| La Fountain 1-34 | 21-101-45347 | Other status | Other type | Manistee, MI | Duff Oil Co | 5,870 ft |
| Forterra 1-15 | 21-137-44355 | Plugged & abandoned | Other type | Otsego, MI | Duff Oil Co | 5,550 ft |
| Colliton 2-15b | 21-137-40306 | Plugged & abandoned | Other type | Otsego, MI | Duff Oil Co | 5,547 ft |
| Derks 1-11 | 21-101-46507 | Other status | Other type | Manistee, MI | Duff Oil Co | — |
Deepest first where depth is published. See all 12 wells →
Frequently asked questions
How many wells does Duff Oil operate?
Duff Oil is the operator of record for 12 catalogued oil & gas wells, with the largest concentration in Michigan (12). Only wells in states WellCensus has ingested are counted.
How many of Duff Oil's wells are still active?
0 of Duff Oil's catalogued wells are active; 10 are plugged & abandoned.
In which states does Duff Oil operate wells?
Duff Oil is the operator of record for wells in Michigan (12).
Does Duff Oil operate mostly oil or gas wells?
0 of Duff Oil's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Duff Oil's deepest well?
Among wells with a published depth, Homestake & Simpson 1-3a in Kalkaska, MI is the deepest at 7,375 ft.
Where Duff 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, “Duff Oil — well portfolio”, https://wellcensus.com/operators/duff-oil-121586 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).