Tesoro Petroleum
Operator of record for 232 catalogued wells across 9 states. Every well below links to its full registry page.
Filed as: TESORO PETROLEUM CORP · TESORO PETROLEUM CORP. · TESORO PETROLEUM CORPORATION · Tesoro Petroleum Corp · …
At a glance
Tesoro Petroleum is the operator of record for 232 catalogued U.S. oil & gas wells in 9 states. None is listed as active, 227 (98%) are plugged & abandoned. Its largest concentration is in California, with 169 wells (73% of its portfolio).
Wells operated
232
Active
0
Plugged
227
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| California | 169 |
| Montana | 15 |
| Wyoming | 15 |
| Colorado | 11 |
| Louisiana | 9 |
| Mississippi | 8 |
| Alabama | 3 |
| Arkansas | 1 |
| North Dakota | 1 |
Well mix
- Oil wells
- 92
- Gas wells
- 4
- Shut-in
- 0
- Active share
- 0%
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Claim your operator profileWhere does Tesoro Petroleum operate?
Tesoro Petroleum's catalogued wells are spread across 9 states: California (169), Montana (15), Wyoming (15), Colorado (11) and Louisiana (9) and 4 more. Its 169 California wells are 0.1% of the 242,471 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 Tesoro Petroleum’s wells are active, plugged or orphaned?
0% of Tesoro Petroleum's catalogued wells are active, 29 percentage points below the national share of 29%. 98% are plugged & abandoned, against 47% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Tesoro Petroleum operate?
By product class, 92 (40%) 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 St. Regis 27-5 #1 in Escambia, AL at 15,910 ft. The wells listed below sit in Escambia (AL), Clarke (MS), Choctaw (AL), Plaquemines (LA), St Charles (LA) and Acadia (LA) and other counties. State filings spell the name 6 ways; WellCensus merges exact-normalized spellings only, so subsidiaries and affiliates keep their own pages.
Notable wells operated by Tesoro Petroleum
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| St. Regis 27-5 #1 | 01-053-20107 | Plugged & abandoned | Oil | Escambia, AL | Tesoro Petroleum Corp. | 15,910 ft |
| Huxford 27-11 #1 | 01-053-20102 | Plugged & abandoned | Other type | Escambia, AL | Tesoro Petroleum Corp. | 14,924 ft |
| Evans 1 1 | 23-023-20425 | Plugged & abandoned | Other type | Clarke, MS | Tesoro Petroleum Corp. | 14,326 ft |
| M H Hall 1 1 | 23-023-20447 | Plugged & abandoned | Other type | Clarke, MS | Tesoro Petroleum Corp. | 13,869 ft |
| Trice 35-14 #1 | 01-023-20152 | Plugged & abandoned | Other type | Choctaw, AL | Tesoro Petroleum Corp. | 12,864 ft |
| Louisiana Citrus 001 | 17-075-21363 | Plugged & abandoned | Other type | Plaquemines, LA | Tesoro Petroleum Corporation | 11,516 ft |
| Bradish-Johnson 001 | 17-075-21269 | Plugged & abandoned | Other type | Plaquemines, LA | Tesoro Petroleum Corporation | 11,500 ft |
| Henry Landeche 001 | 17-089-20170 | Plugged & abandoned | Other type | St Charles, LA | Tesoro Petroleum Corporation | 10,800 ft |
| Hildre Istre 001 | 17-001-20432 | Plugged & abandoned | Other type | Acadia, LA | Tesoro Petroleum Corporation | 10,618 ft |
| Federal-Yates 1 | 49-005-23194 | Plugged & abandoned | Oil | Campbell, WY | Tesoro Petroleum Corporation | 10,537 ft |
| Federal 34-77 1-24 | 49-009-20087 | Plugged & abandoned | Oil | Converse, WY | Tesoro Petroleum Corporation | 9,554 ft |
| Perl 001 | 17-053-20280 | Plugged & abandoned | Other type | Jefferson Davis, LA | Tesoro Petroleum Corporation | 9,406 ft |
Deepest first where depth is published. See all 232 wells →
Frequently asked questions
How many wells does Tesoro Petroleum operate?
Tesoro Petroleum is the operator of record for 232 catalogued oil & gas wells, with the largest concentration in California (169). Only wells in states WellCensus has ingested are counted.
How many of Tesoro Petroleum's wells are still active?
0 of Tesoro Petroleum's catalogued wells are active; 227 are plugged & abandoned.
In which states does Tesoro Petroleum operate wells?
Tesoro Petroleum is the operator of record for wells in California (169), Montana (15), Wyoming (15), Colorado (11), Louisiana (9), Mississippi (8), Alabama (3), Arkansas (1) and North Dakota (1).
Does Tesoro Petroleum operate mostly oil or gas wells?
92 of Tesoro Petroleum's catalogued wells are oil wells and 4 are gas wells; the rest are injection, service or unclassified wells.
What is Tesoro Petroleum's deepest well?
Among wells with a published depth, St. Regis 27-5 #1 in Escambia, AL is the deepest at 15,910 ft.
Where Tesoro Petroleum's wells are
- Oil & gas wells in California· 169 operated by Tesoro Petroleum
- Oil & gas wells in Montana· 15 operated by Tesoro Petroleum
- Oil & gas wells in Wyoming· 15 operated by Tesoro Petroleum
- Oil & gas wells in Colorado· 11 operated by Tesoro Petroleum
- Oil & gas wells in Louisiana· 9 operated by Tesoro Petroleum
- Oil & gas wells in Mississippi· 8 operated by Tesoro Petroleum
- Largest U.S. well operators
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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, “Tesoro Petroleum — well portfolio”, https://wellcensus.com/operators/tesoro-petroleum-3472 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).