Miller Oil
Operator of record for 139 catalogued wells across 9 states. Every well below links to its full registry page.
Filed as: MILLER OIL CO · MILLER OIL CO. · MILLER OIL CORP · MILLER OIL CORPORATION · …
At a glance
Miller Oil is the operator of record for 139 catalogued U.S. oil & gas wells in 9 states. 6 (4%) are active, 70 (50%) plugged & abandoned and 11 flagged as orphaned. Its largest concentration is in Kansas, with 36 wells (26% of its portfolio).
Wells operated
139
Active
6
Plugged
70
Orphaned
11
Portfolio by state
| State | Wells |
|---|---|
| Kansas | 36 |
| Michigan | 35 |
| New York | 23 |
| California | 18 |
| Illinois | 14 |
| Colorado | 7 |
| Kentucky | 3 |
| North Dakota | 2 |
| Mississippi | 1 |
Well mix
- Oil wells
- 66
- Gas wells
- 4
- Shut-in
- 8
- Active share
- 4%
Is this your company?
Claim Miller Oil to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Miller Oil operate?
Miller Oil's catalogued wells are spread across 9 states: Kansas (36), Michigan (35), New York (23), California (18) and Illinois (14) and 4 more. Its 23 New York wells are 0.0% of the 46,514 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 Miller Oil’s wells are active, plugged or orphaned?
4% of Miller Oil's catalogued wells are active, 25 percentage points below the national share of 29%. 50% are plugged & abandoned, against 47% nationally. 8 wells (6%) are shut-in — unplugged but idle. 11 wells filed under this name are flagged as orphaned — unplugged, with no operator able to plug them.
What kinds of wells does Miller Oil operate?
By product class, 66 (47%) are oil wells and 4 (3%) gas wells; nationally the shares are 43% and 17%. The deepest of its wells with a published depth is State Enterprise & Mathiak & Wallace 1-15 in Missaukee, MI at 11,816 ft. The wells listed below sit in Missaukee (MI), Mason (MI), Otsego (MI), Elbert (CO), Jasper (MS) and Renville (ND). State filings spell the name 7 ways; WellCensus merges exact-normalized spellings only, so subsidiaries and affiliates keep their own pages.
Notable wells operated by Miller Oil
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| State Enterprise & Mathiak & Wallace 1-15 | 21-113-40745 | Plugged & abandoned | Other type | Missaukee, MI | Miller Oil Corp | 11,816 ft |
| U.S.A. 1-26 | 21-105-40773 | Other status | Other type | Mason, MI | Miller Oil Corp | 7,200 ft |
| State Chester 3-13 | 21-137-40614 | Plugged & abandoned | Other type | Otsego, MI | Miller Oil Corp | 6,699 ft |
| Dinsmoore 5-13 | 21-137-40879 | Plugged & abandoned | Other type | Otsego, MI | Miller Oil Corp | 6,100 ft |
| 11-26 State | 05-039-06579 | Plugged & abandoned | Other type | Elbert, CO | Miller Oil Co | 5,547 ft |
| 33-15 Champlin | 05-039-06576 | Plugged & abandoned | Other type | Elbert, CO | Miller Oil Co | 5,510 ft |
| Mamie McMullan #A-1 #A-1 | 23-061-00354 | Plugged & abandoned | Other type | Jasper, MS | Miller Oil Corporation | 5,268 ft |
| 11-11 Champlin | 05-039-06577 | Plugged & abandoned | Other type | Elbert, CO | Miller Oil Co | 5,160 ft |
| 21-22 Winkelman | 05-039-06580 | Plugged & abandoned | Other type | Elbert, CO | Miller Oil Co | 5,153 ft |
| 32-36 State | 05-039-06573 | Plugged & abandoned | Other type | Elbert, CO | Miller Oil Co | 5,043 ft |
| Dennis Et Al 1-17 | 21-105-41134 | Plugged & abandoned | Other type | Mason, MI | Miller Oil Corp | 5,030 ft |
| Walter Engel 13-2 | 33-075-00434 | Plugged & abandoned | Oil | Renville, ND | Miller Oil Co. | 5,000 ft |
Deepest first where depth is published. See all 139 wells →
Frequently asked questions
How many wells does Miller Oil operate?
Miller Oil is the operator of record for 139 catalogued oil & gas wells, with the largest concentration in Kansas (36). Only wells in states WellCensus has ingested are counted.
How many of Miller Oil's wells are still active?
6 of Miller Oil's catalogued wells are active; 70 are plugged & abandoned and 11 are flagged as orphaned.
In which states does Miller Oil operate wells?
Miller Oil is the operator of record for wells in Kansas (36), Michigan (35), New York (23), California (18), Illinois (14), Colorado (7), Kentucky (3), North Dakota (2) and Mississippi (1).
Does Miller Oil operate mostly oil or gas wells?
66 of Miller Oil's catalogued wells are oil wells and 4 are gas wells; the rest are injection, service or unclassified wells.
What is Miller Oil's deepest well?
Among wells with a published depth, State Enterprise & Mathiak & Wallace 1-15 in Missaukee, MI is the deepest at 11,816 ft.
Where Miller Oil's wells are
- Oil & gas wells in Kansas· 36 operated by Miller Oil
- Oil & gas wells in Michigan· 35 operated by Miller Oil
- Oil & gas wells in New York· 23 operated by Miller Oil
- Oil & gas wells in California· 18 operated by Miller Oil
- Oil & gas wells in Illinois· 14 operated by Miller Oil
- Oil & gas wells in Colorado· 7 operated by Miller Oil
- Largest U.S. well operators
- All well operators
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, “Miller Oil — well portfolio”, https://wellcensus.com/operators/miller-oil-13065 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).