Mammoth Producing
Operator of record for 42 catalogued wells across 2 states. Every well below links to its full registry page.
Filed as: MAMMOTH PRODUCING CO · MAMMOTH PRODUCING CORP
At a glance
Mammoth Producing is the operator of record for 42 catalogued U.S. oil & gas wells in 2 states. None is listed as active, 3 (7%) are plugged & abandoned. Its largest concentration is in Michigan, with 39 wells (93% of its portfolio).
Wells operated
42
Active
0
Plugged
3
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Michigan | 39 |
| Ohio | 3 |
Well mix
- Oil wells
- 3
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 0%
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Claim your operator profileWhere does Mammoth Producing operate?
Mammoth Producing's catalogued wells are spread across 2 states: Michigan (39) and Ohio (3). Its 39 Michigan wells are 0.0% of the 85,673 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 Mammoth Producing’s wells are active, plugged or orphaned?
0% of Mammoth Producing's catalogued wells are active, 29 percentage points below the national share of 29%. 7% are plugged & abandoned, against 47% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Mammoth Producing operate?
By product class, 3 (7%) 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 Folks, John 1-B in Jackson, MI at 4,473 ft. The wells listed below sit in Jackson (MI), Hillsdale (MI), Clare (MI), Midland (MI), Isabella (MI) and Gladwin (MI). 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 Mammoth Producing
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Folks, John 1-B | 21-075-25635 | Plugged & abandoned | Other type | Jackson, MI | Mammoth Producing Corp | 4,473 ft |
| Folks-Dew Unit 1 | 21-075-24227 | Other status | Other type | Jackson, MI | Mammoth Producing Corp | 4,451 ft |
| Barton-Dew Unit 1 | 21-075-24425 | Plugged & abandoned | Other type | Jackson, MI | Mammoth Producing Corp | 4,346 ft |
| Wooden, Richard T 4 | 21-059-22168 | Other status | Other type | Hillsdale, MI | Mammoth Producing Corp | 3,981 ft |
| Van Horn, A E 1 | 21-035-05299 | Other status | Other type | Clare, MI | Mammoth Producing Corp | 3,909 ft |
| Van Horn, A E 2 | 21-035-05530 | Other status | Other type | Clare, MI | Mammoth Producing Corp | 3,906 ft |
| Mussalmen, Sophia 1 | 21-035-25477 | Other status | Other type | Clare, MI | Mammoth Producing Corp | 3,839 ft |
| Ricket, Ralph W 1 | 21-111-04799 | Other status | Other type | Midland, MI | Mammoth Producing Corp | 3,810 ft |
| Higgens Et Al 4 | 21-111-04948 | Other status | Other type | Midland, MI | Mammoth Producing Corp | 3,789 ft |
| State Summerfield C-1 | 21-035-25480 | Other status | Other type | Clare, MI | Mammoth Producing Corp | 3,767 ft |
| Thayer, C. 5 | 21-073-01647 | Other status | Other type | Isabella, MI | Mammoth Producing Corp | 3,749 ft |
| Manyet, Eva 1 | 21-051-03966 | Other status | Other type | Gladwin, MI | Mammoth Producing Corp | 3,670 ft |
Deepest first where depth is published. See all 42 wells →
Frequently asked questions
How many wells does Mammoth Producing operate?
Mammoth Producing is the operator of record for 42 catalogued oil & gas wells, with the largest concentration in Michigan (39). Only wells in states WellCensus has ingested are counted.
How many of Mammoth Producing's wells are still active?
0 of Mammoth Producing's catalogued wells are active; 3 are plugged & abandoned.
In which states does Mammoth Producing operate wells?
Mammoth Producing is the operator of record for wells in Michigan (39) and Ohio (3).
Does Mammoth Producing operate mostly oil or gas wells?
3 of Mammoth Producing's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Mammoth Producing's deepest well?
Among wells with a published depth, Folks, John 1-B in Jackson, MI is the deepest at 4,473 ft.
Where Mammoth Producing'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, “Mammoth Producing — well portfolio”, https://wellcensus.com/operators/mammoth-producing-80651 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).