Castle Minerals
Operator of record for 84 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Castle Minerals is the operator of record for 84 catalogued U.S. oil & gas wells in 1 state. None is listed as active, 76 (90%) are plugged & abandoned. Its largest concentration is in California, with 84 wells (100% of its portfolio).
Wells operated
84
Active
0
Plugged
76
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| California | 84 |
Well mix
- Oil wells
- 1
- Gas wells
- 69
- Shut-in
- 0
- Active share
- 0%
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Claim Castle Minerals to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Castle Minerals operate?
Castle Minerals's catalogued wells are spread across 1 state: California (84). Its 84 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 Castle Minerals’s wells are active, plugged or orphaned?
0% of Castle Minerals's catalogued wells are active, 29 percentage points below the national share of 29%. 90% are plugged & abandoned, against 47% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Castle Minerals operate?
By product class, 1 (1%) are oil wells and 69 (82%) gas wells; nationally the shares are 43% and 17%. The wells listed below sit in Solano (CA), Yolo (CA), Alameda (CA), Contra Costa (CA) and Colusa (CA).
Notable wells operated by Castle Minerals
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Maine Prairie 2 | 04-095-21183 | Plugged & abandoned | Gas | Solano, CA | Castle Minerals | — |
| CMI Zannetti 7 | 04-095-21264 | Plugged & abandoned | Gas | Solano, CA | Castle Minerals | — |
| Wfl 1-6 | 04-113-20250 | Plugged & abandoned | Gas | Yolo, CA | Castle Minerals | — |
| Wfl 17-31 | 04-113-20729 | Plugged & abandoned | Gas | Yolo, CA | Castle Minerals | — |
| Gondolfo Unit 1 | 04-001-20060 | Plugged & abandoned | Other type | Alameda, CA | Castle Minerals | — |
| Knightsen 1 | 04-013-20273 | Plugged & abandoned | Other type | Contra Costa, CA | Castle Minerals | — |
| Goodman 34-1 | 04-011-20411 | Plugged & abandoned | Gas | Colusa, CA | Castle Minerals | — |
| CMI Raptor 1 | 04-095-21281 | Other status | Gas | Solano, CA | Castle Minerals | — |
| CMI Raptor 1 | 04-095-21312 | Plugged & abandoned | Gas | Solano, CA | Castle Minerals | — |
| East Dufour 1 | 04-113-20849 | Plugged & abandoned | Gas | Yolo, CA | Castle Minerals | — |
| P.-T. Stow Unit 1 3 | 04-095-20752 | Plugged & abandoned | Gas | Solano, CA | Castle Minerals | — |
| Elkhorn West 1 | 04-095-21275 | Plugged & abandoned | Gas | Solano, CA | Castle Minerals | — |
Deepest first where depth is published. See all 84 wells →
Frequently asked questions
How many wells does Castle Minerals operate?
Castle Minerals is the operator of record for 84 catalogued oil & gas wells, with the largest concentration in California (84). Only wells in states WellCensus has ingested are counted.
How many of Castle Minerals's wells are still active?
0 of Castle Minerals's catalogued wells are active; 76 are plugged & abandoned.
In which states does Castle Minerals operate wells?
Castle Minerals is the operator of record for wells in California (84).
Does Castle Minerals operate mostly oil or gas wells?
1 of Castle Minerals's catalogued wells are oil wells and 69 are gas wells; the rest are injection, service or unclassified wells.
Where Castle Minerals'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, “Castle Minerals — well portfolio”, https://wellcensus.com/operators/castle-minerals-3825 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).