Maria Joaquin Basin
Operator of record for 74 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Maria Joaquin Basin is the operator of record for 74 catalogued U.S. oil & gas wells in 1 state. None is listed as active, 74 (100%) are plugged & abandoned. Its largest concentration is in California, with 74 wells (100% of its portfolio).
Wells operated
74
Active
0
Plugged
74
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| California | 74 |
Well mix
- Oil wells
- 66
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 0%
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Claim your operator profileWhere does Maria Joaquin Basin operate?
Maria Joaquin Basin's catalogued wells are spread across 1 state: California (74). Its 74 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 Maria Joaquin Basin’s wells are active, plugged or orphaned?
0% of Maria Joaquin Basin's catalogued wells are active, 29 percentage points below the national share of 29%. 100% are plugged & abandoned, against 47% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Maria Joaquin Basin operate?
By product class, 66 (89%) are oil wells and 0 (0%) gas wells; nationally the shares are 43% and 17%. The wells listed below sit in Kern (CA) and Santa Barbara (CA).
Notable wells operated by Maria Joaquin Basin
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| McPhail 4-5 | 04-029-23743 | Plugged & abandoned | Oil | Kern, CA | Maria Joaquin Basin, LLC | — |
| McPhail 5-5 | 04-029-23744 | Plugged & abandoned | Oil | Kern, CA | Maria Joaquin Basin, LLC | — |
| Morganti 2 | 04-083-00892 | Plugged & abandoned | Oil | Santa Barbara, CA | Maria Joaquin Basin, LLC | — |
| Righetti 2 | 04-083-01096 | Plugged & abandoned | Oil | Santa Barbara, CA | Maria Joaquin Basin, LLC | — |
| Arellanes 2 | 04-083-00918 | Plugged & abandoned | Oil | Santa Barbara, CA | Maria Joaquin Basin, LLC | — |
| Righetti 3 | 04-083-01097 | Plugged & abandoned | Oil | Santa Barbara, CA | Maria Joaquin Basin, LLC | — |
| Morganti 34 | 04-083-00890 | Plugged & abandoned | Oil | Santa Barbara, CA | Maria Joaquin Basin, LLC | — |
| Morganti 54 | 04-083-00919 | Plugged & abandoned | Oil | Santa Barbara, CA | Maria Joaquin Basin, LLC | — |
| Morganti 59 | 04-083-00907 | Plugged & abandoned | Oil | Santa Barbara, CA | Maria Joaquin Basin, LLC | — |
| Morganti 8 | 04-083-00897 | Plugged & abandoned | Oil | Santa Barbara, CA | Maria Joaquin Basin, LLC | — |
| Morganti 9 | 04-083-00898 | Plugged & abandoned | Oil | Santa Barbara, CA | Maria Joaquin Basin, LLC | — |
| Bradley Consolidated 1-37 | 04-083-20545 | Plugged & abandoned | Other type | Santa Barbara, CA | Maria Joaquin Basin, LLC | — |
Deepest first where depth is published. See all 74 wells →
Frequently asked questions
How many wells does Maria Joaquin Basin operate?
Maria Joaquin Basin is the operator of record for 74 catalogued oil & gas wells, with the largest concentration in California (74). Only wells in states WellCensus has ingested are counted.
How many of Maria Joaquin Basin's wells are still active?
0 of Maria Joaquin Basin's catalogued wells are active; 74 are plugged & abandoned.
In which states does Maria Joaquin Basin operate wells?
Maria Joaquin Basin is the operator of record for wells in California (74).
Does Maria Joaquin Basin operate mostly oil or gas wells?
66 of Maria Joaquin Basin's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
Where Maria Joaquin Basin'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, “Maria Joaquin Basin — well portfolio”, https://wellcensus.com/operators/maria-joaquin-basin-11067 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).