National Oil
Operator of record for 79 catalogued wells across 9 states. Every well below links to its full registry page.
Filed as: NATIONAL OIL CO · NATIONAL OIL CO. · NATIONAL OIL COMPANY · National Oil Co. · …
Wells operated
79
Active
1
Plugged
25
Orphaned
21
Portfolio by state
| State | Wells |
|---|---|
| California | 23 |
| Colorado | 11 |
| Wyoming | 11 |
| North Dakota | 4 |
| Illinois | 2 |
| Montana | 1 |
| Utah | 1 |
Well mix
- Oil wells
- 40
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 1%
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Claim your operator profileNotable wells operated by National Oil
| Well | API # | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Federal 23-5 | 49-005-26232 | Other status | Oil | Campbell, WY | National Oil Company | 10,344 ft |
| Steinhoefel Fee 23-7 | 49-005-26915 | Plugged & abandoned | Oil | Campbell, WY | National Oil Company | 10,200 ft |
| Steinhoefel 41-1 | 49-005-26914 | Plugged & abandoned | Oil | Campbell, WY | National Oil Company | 10,200 ft |
| Shippey Superior Fee 1-33 | 49-005-25668 | Plugged & abandoned | Oil | Campbell, WY | National Oil Company | 9,700 ft |
| G. Ehrmantrout 21-25 | 33-011-00390 | Plugged & abandoned | Oil | Bowman, ND | National Oil Co. | 9,682 ft |
| Hought 43-2 | 33-105-01056 | Plugged & abandoned | Oil | Williams, ND | National Oil Co. | 9,100 ft |
| 1(D) Helmke-Federal | 05-081-05296 | Plugged & abandoned | Other type | Moffat, CO | National Oil Co | 8,318 ft |
| Fee 32-12 | 49-005-25699 | Plugged & abandoned | Oil | Campbell, WY | National Oil Company | 7,700 ft |
| Zimmerman 1-20 | 25-065-21638 | Plugged & abandoned | Other type | Musselshell, MT | National Oil Company | 7,501 ft |
| Diamond Shamrock 33-23 | 49-005-25959 | Plugged & abandoned | Oil | Campbell, WY | National Oil Company | 7,480 ft |
| #42-18 Helmke-Federal | 05-081-06580 | Plugged & abandoned | Other type | Moffat, CO | National Oil Co | 7,365 ft |
| Chorney W-55039 31-18 | 49-011-20850 | Plugged & abandoned | Oil | Crook, WY | National Oil Company | 7,300 ft |
Deepest first where depth is published; find any well via search.
Frequently asked questions
How many wells does National Oil operate?
National Oil is the operator of record for 79 catalogued oil & gas wells, with the largest concentration in California (23). Only wells in states WellCensus has ingested are counted.
How many of National Oil's wells are still active?
1 of National Oil's catalogued wells are active; 25 are plugged & abandoned and 21 are flagged as orphaned.
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).