Arco Western Energy
Operator of record for 694 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Arco Western Energy is the operator of record for 694 catalogued U.S. oil & gas wells in 1 state. None is listed as active, 687 (99%) are plugged & abandoned and 6 flagged as orphaned. Its largest concentration is in California, with 694 wells (100% of its portfolio).
Wells operated
694
Active
0
Plugged
687
Orphaned
6
Portfolio by state
| State | Wells |
|---|---|
| California | 694 |
Well mix
- Oil wells
- 412
- Gas wells
- 12
- Shut-in
- 0
- Active share
- 0%
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Claim your operator profileWhere does Arco Western Energy operate?
Arco Western Energy's catalogued wells are spread across 1 state: California (694). Its 694 California wells are 0.3% 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 (location indexes) and in states without a registry ingest are not yet attributed to any operator.
How many of Arco Western Energy’s wells are active, plugged or orphaned?
0% of Arco Western Energy's catalogued wells are active, 30 percentage points below the national share of 30%. 99% are plugged & abandoned, against 48% nationally. 6 wells filed under this name are flagged as orphaned — unplugged, with no operator able to plug them.
What kinds of wells does Arco Western Energy operate?
By product class, 412 (59%) are oil wells and 12 (2%) gas wells; nationally the shares are 45% and 18%. The wells listed below sit in Ventura (CA), Sutter (CA), Tehama (CA), Yolo (CA), Solano (CA) and Tulare (CA) and other counties.
Notable wells operated by Arco Western Energy
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| E. P. Clark 8 | 04-111-02314 | Plugged & abandoned | Other type | Ventura, CA | Arco Western Energy Co. | — |
| Reische 1-2 | 04-101-20191 | Plugged & abandoned | Other type | Sutter, CA | Arco Western Energy Co. | — |
| McKenzie 1 | 04-103-20102 | Plugged & abandoned | Other type | Tehama, CA | Arco Western Energy Co. | — |
| Pucek-Butler 1 | 04-103-20113 | Plugged & abandoned | Other type | Tehama, CA | Arco Western Energy Co. | — |
| Heidrick 1 | 04-113-20716 | Plugged & abandoned | Other type | Yolo, CA | Arco Western Energy Co. | — |
| Dinkum-Stewart 1 | 04-113-20868 | Plugged & abandoned | Other type | Yolo, CA | Arco Western Energy Co. | — |
| Potrero Hills 2 | 04-095-00489 | Plugged & abandoned | Other type | Solano, CA | Arco Western Energy Co. | — |
| Reiff 1 | 04-113-20125 | Plugged & abandoned | Other type | Yolo, CA | Arco Western Energy Co. | — |
| Hewitt 1 | 04-107-00243 | Plugged & abandoned | Other type | Tulare, CA | Arco Western Energy Co. | — |
| Terra Bella Adams 1 | 04-107-00341 | Plugged & abandoned | Other type | Tulare, CA | Arco Western Energy Co. | — |
| Shaw A 1 | 04-029-15370 | Plugged & abandoned | Other type | Kern, CA | Arco Western Energy Co. | — |
| Gallatin 1 | 04-103-00140 | Plugged & abandoned | Other type | Tehama, CA | Arco Western Energy Co. | — |
Deepest first where depth is published. See all 694 wells →
Frequently asked questions
How many wells does Arco Western Energy operate?
Arco Western Energy is the operator of record for 694 catalogued oil & gas wells, with the largest concentration in California (694). Only wells in states WellCensus has ingested are counted.
How many of Arco Western Energy's wells are still active?
0 of Arco Western Energy's catalogued wells are active; 687 are plugged & abandoned and 6 are flagged as orphaned.
In which states does Arco Western Energy operate wells?
Arco Western Energy is the operator of record for wells in California (694).
Does Arco Western Energy operate mostly oil or gas wells?
412 of Arco Western Energy's catalogued wells are oil wells and 12 are gas wells; the rest are injection, service or unclassified wells.
Where Arco Western Energy'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 28, 2026 — WellCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.
Cite as: WellCensus, “Arco Western Energy — well portfolio”, https://wellcensus.com/operators/arco-western-energy-3470 (data as of October 28, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).