Chanslor Western Oil & Development
Operator of record for 17 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Chanslor Western Oil & Development is the operator of record for 17 catalogued U.S. oil & gas wells in 1 state. None is listed as active, 8 (47%) are plugged & abandoned. Its largest concentration is in California, with 17 wells (100% of its portfolio).
Wells operated
17
Active
0
Plugged
8
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| California | 17 |
Well mix
- Oil wells
- 9
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 0%
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Claim your operator profileWhere does Chanslor Western Oil & Development operate?
Chanslor Western Oil & Development's catalogued wells are spread across 1 state: California (17). Its 17 California wells are 0.0% 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 Chanslor Western Oil & Development’s wells are active, plugged or orphaned?
0% of Chanslor Western Oil & Development's catalogued wells are active, 29 percentage points below the national share of 29%. 47% are plugged & abandoned, against 47% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Chanslor Western Oil & Development operate?
By product class, 9 (53%) are oil wells and 0 (0%) gas wells; nationally the shares are 43% and 17%. The wells listed below sit in San Luis Obispo (CA) and Kern (CA).
Notable wells operated by Chanslor Western Oil & Development
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Mahoney 1 | 04-079-00167 | Plugged & abandoned | Other type | San Luis Obispo, CA | Chanslor-Western Oil & Development Company | — |
| Petersen 1 | 04-079-00168 | Plugged & abandoned | Other type | San Luis Obispo, CA | Chanslor-Western Oil & Development Company | — |
| Thomas 1 | 04-079-00169 | Plugged & abandoned | Other type | San Luis Obispo, CA | Chanslor-Western Oil & Development Company | — |
| Lease by Chanslor-Western Oil & Development Company 24 | 04-029-21791 | Other status | Oil | Kern, CA | Chanslor-Western Oil & Development Company | — |
| Lease by Chanslor-Western Oil & Development Company 23 | 04-029-21790 | Other status | Oil | Kern, CA | Chanslor-Western Oil & Development Company | — |
| Lease by Chanslor-Western Oil & Development Company 25 | 04-029-21792 | Other status | Oil | Kern, CA | Chanslor-Western Oil & Development Company | — |
| Lease by Chanslor-Western Oil & Development Company 113 | 04-029-02955 | Other status | Oil | Kern, CA | Chanslor-Western Oil & Development Company | — |
| Lease by Chanslor-Western Oil & Development Company 112 | 04-029-02954 | Other status | Oil | Kern, CA | Chanslor-Western Oil & Development Company | — |
| Lease by Chanslor-Western Oil & Development Company 111 | 04-029-02953 | Other status | Oil | Kern, CA | Chanslor-Western Oil & Development Company | — |
| Lease by Chanslor-Western Oil & Development Company 108 | 04-029-02952 | Other status | Oil | Kern, CA | Chanslor-Western Oil & Development Company | — |
| Lease by Chanslor-Western Oil & Development Company 107 | 04-029-02951 | Other status | Oil | Kern, CA | Chanslor-Western Oil & Development Company | — |
| Lease by Chanslor-Western Oil & Development Company 131 | 04-029-49467 | Other status | Oil | Kern, CA | Chanslor-Western Oil & Development Company | — |
Deepest first where depth is published. See all 17 wells →
Frequently asked questions
How many wells does Chanslor Western Oil & Development operate?
Chanslor Western Oil & Development is the operator of record for 17 catalogued oil & gas wells, with the largest concentration in California (17). Only wells in states WellCensus has ingested are counted.
How many of Chanslor Western Oil & Development's wells are still active?
0 of Chanslor Western Oil & Development's catalogued wells are active; 8 are plugged & abandoned.
In which states does Chanslor Western Oil & Development operate wells?
Chanslor Western Oil & Development is the operator of record for wells in California (17).
Does Chanslor Western Oil & Development operate mostly oil or gas wells?
9 of Chanslor Western Oil & Development's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
Where Chanslor Western Oil & Development'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, “Chanslor Western Oil & Development — well portfolio”, https://wellcensus.com/operators/chanslor-western-oil-development-8906 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).