Mills Oil
Operator of record for 11 catalogued wells across 4 states. Every well below links to its full registry page.
Filed as: MILLS OIL INC · Mills Oil · Mills Oil Co.
At a glance
Mills Oil is the operator of record for 11 catalogued U.S. oil & gas wells in 4 states. None is listed as active, 9 (82%) are plugged & abandoned. Its largest concentration is in Montana, with 6 wells (55% of its portfolio).
Wells operated
11
Active
0
Plugged
9
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Montana | 6 |
| California | 3 |
| Illinois | 1 |
| Michigan | 1 |
Well mix
- Oil wells
- 8
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 0%
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Claim your operator profileWhere does Mills Oil operate?
Mills Oil's catalogued wells are spread across 4 states: Montana (6), California (3), Illinois (1) and Michigan (1). Its 6 Montana wells are 0.0% of the 42,011 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 Mills Oil’s wells are active, plugged or orphaned?
0% of Mills Oil's catalogued wells are active, 29 percentage points below the national share of 29%. 82% are plugged & abandoned, against 47% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Mills Oil operate?
By product class, 8 (73%) are oil wells and 0 (0%) gas wells; nationally the shares are 43% and 17%. The deepest of its wells with a published depth is Jaqua 1 in Ogemaw, MI at 2,629 ft. The wells listed below sit in Ogemaw (MI), Wabash (IL), Toole (MT), San Diego (CA) and Los Angeles (CA). State filings spell the name 3 ways; WellCensus merges exact-normalized spellings only, so subsidiaries and affiliates keep their own pages.
Notable wells operated by Mills Oil
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Jaqua 1 | 21-129-02662 | Other status | Other type | Ogemaw, MI | Mills Oil Inc | 2,629 ft |
| Nash Lee 1 | 12-185-04668 | Plugged & abandoned | Oil | Wabash, IL | Mills Oil | 1,990 ft |
| Federal 2 | 25-101-08796 | Plugged & abandoned | Oil | Toole, MT | Mills Oil | 1,725 ft |
| Govt 086693 3 | 25-101-60008 | Plugged & abandoned | Oil | Toole, MT | Mills Oil | 1,689 ft |
| Gov't 1 | 25-101-08743 | Plugged & abandoned | Oil | Toole, MT | Mills Oil | 1,660 ft |
| Federal 14 | 25-101-08920 | Plugged & abandoned | Oil | Toole, MT | Mills Oil | 1,656 ft |
| Danielson 1 | 25-101-06144 | Other status | Other type | Toole, MT | Mills Oil | 1,543 ft |
| Government 5 | 25-101-06974 | Plugged & abandoned | Oil | Toole, MT | Mills Oil | 1,455 ft |
| Lease by Mills Oil Co. 1 | 04-073-00032 | Plugged & abandoned | Other type | San Diego, CA | Mills Oil Co. | — |
| Delaney 13 | 04-037-10623 | Plugged & abandoned | Oil | Los Angeles, CA | Mills Oil Co. | — |
| Gibson 1 | 04-037-10128 | Plugged & abandoned | Oil | Los Angeles, CA | Mills Oil Co. | — |
Deepest first where depth is published. See all 11 wells →
Frequently asked questions
How many wells does Mills Oil operate?
Mills Oil is the operator of record for 11 catalogued oil & gas wells, with the largest concentration in Montana (6). Only wells in states WellCensus has ingested are counted.
How many of Mills Oil's wells are still active?
0 of Mills Oil's catalogued wells are active; 9 are plugged & abandoned.
In which states does Mills Oil operate wells?
Mills Oil is the operator of record for wells in Montana (6), California (3), Illinois (1) and Michigan (1).
Does Mills Oil operate mostly oil or gas wells?
8 of Mills Oil's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Mills Oil's deepest well?
Among wells with a published depth, Jaqua 1 in Ogemaw, MI is the deepest at 2,629 ft.
Where Mills 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, “Mills Oil — well portfolio”, https://wellcensus.com/operators/mills-oil-10673 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).