Duncan Oil
Operator of record for 245 catalogued wells across 8 states. Every well below links to its full registry page.
Filed as: DUNCAN OIL COMPANY · DUNCAN OIL INC · DUNCAN OIL INC. · DUNCAN OIL, INC. · …
At a glance
Duncan Oil is the operator of record for 245 catalogued U.S. oil & gas wells in 8 states. 12 (5%) are active, 202 (82%) plugged & abandoned and 1 flagged as orphaned. Its largest concentration is in Wyoming, with 114 wells (47% of its portfolio).
Wells operated
245
Active
12
Plugged
202
Orphaned
1
Portfolio by state
| State | Wells |
|---|---|
| Wyoming | 114 |
| Louisiana | 38 |
| Illinois | 34 |
| North Dakota | 30 |
| Colorado | 22 |
| Michigan | 4 |
| Mississippi | 2 |
| California | 1 |
Well mix
- Oil wells
- 148
- Gas wells
- 14
- Shut-in
- 0
- Active share
- 5%
Is this your company?
Claim Duncan Oil to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Duncan Oil operate?
Duncan Oil's catalogued wells are spread across 8 states: Wyoming (114), Louisiana (38), Illinois (34), North Dakota (30) and Colorado (22) and 3 more. Its 114 Wyoming wells are 0.1% of the 129,957 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 Duncan Oil’s wells are active, plugged or orphaned?
5% of Duncan Oil's catalogued wells are active, 24 percentage points below the national share of 29%. 82% are plugged & abandoned, against 47% nationally. 1 wells filed under this name are flagged as orphaned — unplugged, with no operator able to plug them.
What kinds of wells does Duncan Oil operate?
By product class, 148 (60%) are oil wells and 14 (6%) gas wells; nationally the shares are 43% and 17%. The deepest of its wells with a published depth is Labokay Corp 5 001 in Calcasieu, LA at 17,507 ft. The wells listed below sit in Calcasieu (LA), Acadia (LA), Williams (ND) and Dunn (ND). State filings spell the name 7 ways; WellCensus merges exact-normalized spellings only, so subsidiaries and affiliates keep their own pages.
Notable wells operated by Duncan Oil
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Labokay Corp 5 001 | 17-019-22252 | Plugged & abandoned | Other type | Calcasieu, LA | Duncan Oil, Inc. | 17,507 ft |
| Bol M Stray Ra Sua;terro 001 | 17-001-22181 | Plugged & abandoned | Other type | Acadia, LA | Duncan Oil, Inc. | 14,550 ft |
| F12-F13 Ra Sua;leonards Etal 001 | 17-001-22195 | Plugged & abandoned | Other type | Acadia, LA | Duncan Oil, Inc. | 13,850 ft |
| Miogyp-Mt Ra Sua;plattsmier 001 | 17-001-22178 | Plugged & abandoned | Other type | Acadia, LA | Duncan Oil, Inc. | 13,436 ft |
| Tioga South 1 | 33-105-01459 | Plugged & abandoned | Oil | Williams, ND | Duncan Oil, Inc. | 13,325 ft |
| Danny Cryer 001 | 17-019-22059 | Plugged & abandoned | Other type | Calcasieu, LA | Duncan Oil, Inc. | 13,168 ft |
| Fridley 1-25 | 33-025-00514 | Plugged & abandoned | Oil | Dunn, ND | Duncan Oil, Inc. | 12,863 ft |
| Midd Y Ra Sua;clark R Est 14 001 | 17-019-22326 | Plugged & abandoned | Other type | Calcasieu, LA | Duncan Oil, Inc. | 12,830 ft |
| 12200 Hby Rb Sub;cwm Inc 002 | 17-019-22040 | Plugged & abandoned | Other type | Calcasieu, LA | Duncan Oil, Inc. | 12,828 ft |
| 12200 Hby Rb Sua;cwm Inc 001 | 17-019-21993 | Plugged & abandoned | Other type | Calcasieu, LA | Duncan Oil, Inc. | 12,800 ft |
| 12200 Hby Rc Sua;lawton 10 001 | 17-019-22036 | Plugged & abandoned | Other type | Calcasieu, LA | Duncan Oil, Inc. | 12,540 ft |
| Miogyp-Mt Ra Sua;larrivierre 001 | 17-001-22179 | Plugged & abandoned | Other type | Acadia, LA | Duncan Oil, Inc. | 12,350 ft |
Deepest first where depth is published. See all 245 wells →
Frequently asked questions
How many wells does Duncan Oil operate?
Duncan Oil is the operator of record for 245 catalogued oil & gas wells, with the largest concentration in Wyoming (114). Only wells in states WellCensus has ingested are counted.
How many of Duncan Oil's wells are still active?
12 of Duncan Oil's catalogued wells are active; 202 are plugged & abandoned and 1 are flagged as orphaned.
In which states does Duncan Oil operate wells?
Duncan Oil is the operator of record for wells in Wyoming (114), Louisiana (38), Illinois (34), North Dakota (30), Colorado (22), Michigan (4), Mississippi (2) and California (1).
Does Duncan Oil operate mostly oil or gas wells?
148 of Duncan Oil's catalogued wells are oil wells and 14 are gas wells; the rest are injection, service or unclassified wells.
What is Duncan Oil's deepest well?
Among wells with a published depth, Labokay Corp 5 001 in Calcasieu, LA is the deepest at 17,507 ft.
Where Duncan Oil's wells are
- Oil & gas wells in Wyoming· 114 operated by Duncan Oil
- Oil & gas wells in Louisiana· 38 operated by Duncan Oil
- Oil & gas wells in Illinois· 34 operated by Duncan Oil
- Oil & gas wells in North Dakota· 30 operated by Duncan Oil
- Oil & gas wells in Colorado· 22 operated by Duncan Oil
- Oil & gas wells in Michigan· 4 operated by Duncan 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, “Duncan Oil — well portfolio”, https://wellcensus.com/operators/duncan-oil-4543 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).