Pennzoil
Operator of record for 124 catalogued wells across 11 states. Every well below links to its full registry page.
Filed as: PENNZOIL CO · PENNZOIL CO. · PENNZOIL COMPANY · Pennzoil Company
At a glance
Pennzoil is the operator of record for 124 catalogued U.S. oil & gas wells in 11 states. 2 (2%) are active, 97 (78%) plugged & abandoned. Its largest concentration is in North Dakota, with 69 wells (56% of its portfolio).
Wells operated
124
Active
2
Plugged
97
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| North Dakota | 69 |
| Kentucky | 20 |
| Wyoming | 12 |
| Oklahoma | 6 |
| Louisiana | 5 |
| Colorado | 3 |
| Utah | 3 |
| Michigan | 2 |
| Montana | 2 |
| California | 1 |
| New Mexico | 1 |
Well mix
- Oil wells
- 84
- Gas wells
- 2
- Shut-in
- 0
- Active share
- 2%
Is this your company?
Claim Pennzoil to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Pennzoil operate?
Pennzoil's catalogued wells are spread across 11 states: North Dakota (69), Kentucky (20), Wyoming (12), Oklahoma (6) and Louisiana (5) and 6 more. Its 69 North Dakota wells are 0.2% of the 43,680 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 Pennzoil’s wells are active, plugged or orphaned?
2% of Pennzoil's catalogued wells are active, 27 percentage points below the national share of 29%. 78% are plugged & abandoned, against 47% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Pennzoil operate?
By product class, 84 (68%) are oil wells and 2 (2%) gas wells; nationally the shares are 43% and 17%. The deepest of its wells with a published depth is Twin Tanks 36-32 in Mckenzie, ND at 14,425 ft. The wells listed below sit in Mckenzie (ND), Mountrail (ND) and Uinta (WY). State filings spell the name 4 ways; WellCensus merges exact-normalized spellings only, so subsidiaries and affiliates keep their own pages.
Notable wells operated by Pennzoil
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Twin Tanks 36-32 | 33-053-01212 | Plugged & abandoned | Oil | Mckenzie, ND | Pennzoil Co. | 14,425 ft |
| Slawson 34-12 | 33-053-01086 | Plugged & abandoned | Oil | Mckenzie, ND | Pennzoil Co. | 14,250 ft |
| Ranch Creek 29-13 Bn | 33-053-01372 | Plugged & abandoned | Oil | Mckenzie, ND | Pennzoil Co. | 14,185 ft |
| Ross 36-32 | 33-061-00286 | Plugged & abandoned | Oil | Mountrail, ND | Pennzoil Co. | 14,025 ft |
| Corral Creek 29-13 Bn | 33-053-01288 | Plugged & abandoned | Oil | Mckenzie, ND | Pennzoil Co. | 14,000 ft |
| Federal 10-41 | 33-053-00892 | Plugged & abandoned | Oil | Mckenzie, ND | Pennzoil Co. | 13,522 ft |
| Trailside 3-21-F | 33-053-01324 | Plugged & abandoned | Oil | Mckenzie, ND | Pennzoil Co. | 13,517 ft |
| Snowcover 12-24f | 33-053-01925 | Plugged & abandoned | Oil | Mckenzie, ND | Pennzoil Co. | 13,500 ft |
| Four Creeks 6-32f | 33-053-01228 | Plugged & abandoned | Oil | Mckenzie, ND | Pennzoil Co. | 13,498 ft |
| Cedar Creek 23-21 Bn | 33-053-01304 | Plugged & abandoned | Oil | Mckenzie, ND | Pennzoil Co. | 13,420 ft |
| Cinnamon Creek 17-12 Bn | 33-053-01325 | Plugged & abandoned | Oil | Mckenzie, ND | Pennzoil Co. | 13,415 ft |
| Dog Spring 1 | 49-041-20741 | Plugged & abandoned | Gas | Uinta, WY | Pennzoil Company | 13,407 ft |
Deepest first where depth is published. See all 124 wells →
Frequently asked questions
How many wells does Pennzoil operate?
Pennzoil is the operator of record for 124 catalogued oil & gas wells, with the largest concentration in North Dakota (69). Only wells in states WellCensus has ingested are counted.
How many of Pennzoil's wells are still active?
2 of Pennzoil's catalogued wells are active; 97 are plugged & abandoned.
In which states does Pennzoil operate wells?
Pennzoil is the operator of record for wells in North Dakota (69), Kentucky (20), Wyoming (12), Oklahoma (6), Louisiana (5), Colorado (3), Utah (3), Michigan (2), Montana (2), California (1) and New Mexico (1).
Does Pennzoil operate mostly oil or gas wells?
84 of Pennzoil's catalogued wells are oil wells and 2 are gas wells; the rest are injection, service or unclassified wells.
What is Pennzoil's deepest well?
Among wells with a published depth, Twin Tanks 36-32 in Mckenzie, ND is the deepest at 14,425 ft.
Where Pennzoil's wells are
- Oil & gas wells in North Dakota· 69 operated by Pennzoil
- Oil & gas wells in Kentucky· 20 operated by Pennzoil
- Oil & gas wells in Wyoming· 12 operated by Pennzoil
- Oil & gas wells in Oklahoma· 6 operated by Pennzoil
- Oil & gas wells in Louisiana· 5 operated by Pennzoil
- Oil & gas wells in Colorado· 3 operated by Pennzoil
- 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, “Pennzoil — well portfolio”, https://wellcensus.com/operators/pennzoil-7451 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).