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WellCensus

Simi Oil

Operator of record for 8 catalogued wells across 1 state. Every well below links to its full registry page.

Filed as: Simi Oil Co. · Simi Oil Co., Ltd.

At a glance

Simi Oil is the operator of record for 8 catalogued U.S. oil & gas wells in 1 state. None is listed as active, 8 (100%) are plugged & abandoned. Its largest concentration is in California, with 8 wells (100% of its portfolio).

Wells operated

8

Active

0

Plugged

8

Orphaned

0

Portfolio by state

StateWells
California8

Well mix

Oil wells
6
Gas wells
0
Shut-in
0
Active share
0%

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Where does Simi Oil operate?

Simi Oil's catalogued wells are spread across 1 state: California (8). Its 8 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 Simi Oil’s wells are active, plugged or orphaned?

0% of Simi Oil'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 Simi Oil operate?

By product class, 6 (75%) are oil wells and 0 (0%) gas wells; nationally the shares are 43% and 17%. The wells listed below sit in Ventura (CA) and Los Angeles (CA). State filings spell the name 2 ways; WellCensus merges exact-normalized spellings only, so subsidiaries and affiliates keep their own pages.

Notable wells operated by Simi Oil

Wells operated by Simi Oil
WellAPI # / state IDStatusTypeLocationOperatorDepth
Well No. 604-111-06416Plugged & abandonedOilVentura, CASimi Oil Co.—
Lease by Simi Oil Co., Ltd. 104-037-05921Plugged & abandonedOther typeLos Angeles, CASimi Oil Co., Ltd.—
Well No. 104-111-06411Plugged & abandonedOilVentura, CASimi Oil Co.—
Well No. 204-111-06412Plugged & abandonedOilVentura, CASimi Oil Co.—
Well No. 304-111-06413Plugged & abandonedOilVentura, CASimi Oil Co.—
Well No. 404-111-06414Plugged & abandonedOilVentura, CASimi Oil Co.—
Hearst 204-111-05548Plugged & abandonedOther typeVentura, CASimi Oil Co., Ltd.—
Well No. 504-111-06415Plugged & abandonedOilVentura, CASimi Oil Co.—

Deepest first where depth is published. See all 8 wells →

Frequently asked questions

How many wells does Simi Oil operate?

Simi Oil is the operator of record for 8 catalogued oil & gas wells, with the largest concentration in California (8). Only wells in states WellCensus has ingested are counted.

How many of Simi Oil's wells are still active?

0 of Simi Oil's catalogued wells are active; 8 are plugged & abandoned.

In which states does Simi Oil operate wells?

Simi Oil is the operator of record for wells in California (8).

Does Simi Oil operate mostly oil or gas wells?

6 of Simi Oil's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.

Where Simi Oil'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, “Simi Oil — well portfolio”, https://wellcensus.com/operators/simi-oil-4745 (data as of October 10, 2026).

Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).