Mammoth Resource
Operator of record for 88 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Mammoth Resource is the operator of record for 88 catalogued U.S. oil & gas wells in 1 state. 40 (45%) are active, 28 (32%) plugged & abandoned. Its largest concentration is in Kentucky, with 88 wells (100% of its portfolio).
Wells operated
88
Active
40
Plugged
28
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Kentucky | 88 |
Well mix
- Oil wells
- 12
- Gas wells
- 43
- Shut-in
- 0
- Active share
- 45%
Is this your company?
Claim Mammoth Resource to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Mammoth Resource operate?
Mammoth Resource's catalogued wells are spread across 1 state: Kentucky (88). Its 88 Kentucky wells are 0.0% of the 201,022 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 Resource’s wells are active, plugged or orphaned?
45% of Mammoth Resource's catalogued wells are active, 17 percentage points above the national share of 29%. 32% are plugged & abandoned, against 47% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Mammoth Resource operate?
By product class, 12 (14%) are oil wells and 43 (49%) gas wells; nationally the shares are 43% and 17%. The deepest of its wells with a published depth is Evan Heirs 1 in Bell, KY at 4,332 ft.
Notable wells operated by Mammoth Resource
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Evan Heirs 1 | 16-013-00570 | Active | Gas | Bell, KY | Mammoth Resource, LLC | 4,332 ft |
| Evan Heirs 2 | 16-013-00616 | Active | Gas | Bell, KY | Mammoth Resource, LLC | 4,282 ft |
| Evan Heirs 3 | 16-013-00572 | Active | Gas | Bell, KY | Mammoth Resource, LLC | 4,272 ft |
| Evan Heirs 4 | 16-013-00651 | Active | Gas | Bell, KY | Mammoth Resource, LLC | 4,198 ft |
| Evan Heirs 12 | 16-013-00671 | Active | Gas | Bell, KY | Mammoth Resource, LLC | 4,053 ft |
| Evan Heirs 6 | 16-013-00650 | Active | Gas | Bell, KY | Mammoth Resource, LLC | 3,986 ft |
| Evan Heirs 5 | 16-013-00649 | Active | Gas | Bell, KY | Mammoth Resource, LLC | 3,984 ft |
| Evan Heirs 8 | 16-013-00659 | Active | Gas | Bell, KY | Mammoth Resource, LLC | 3,982 ft |
| Browning, Larry Et Al Lb-5 | 16-013-00668 | Active | Gas | Bell, KY | Mammoth Resource, LLC | 3,964 ft |
| Evan Heirs 9 | 16-013-00660 | Active | Gas | Bell, KY | Mammoth Resource, LLC | 3,881 ft |
| Browning, Larry Et Al Lb-7 | 16-013-00663 | Active | Gas | Bell, KY | Mammoth Resource, LLC | 3,782 ft |
| Browning, Larry Et Al Lb-2 | 16-013-00661 | Active | Gas | Bell, KY | Mammoth Resource, LLC | 3,720 ft |
Deepest first where depth is published. See all 88 wells →
Frequently asked questions
How many wells does Mammoth Resource operate?
Mammoth Resource is the operator of record for 88 catalogued oil & gas wells, with the largest concentration in Kentucky (88). Only wells in states WellCensus has ingested are counted.
How many of Mammoth Resource's wells are still active?
40 of Mammoth Resource's catalogued wells are active; 28 are plugged & abandoned.
In which states does Mammoth Resource operate wells?
Mammoth Resource is the operator of record for wells in Kentucky (88).
Does Mammoth Resource operate mostly oil or gas wells?
12 of Mammoth Resource's catalogued wells are oil wells and 43 are gas wells; the rest are injection, service or unclassified wells.
What is Mammoth Resource's deepest well?
Among wells with a published depth, Evan Heirs 1 in Bell, KY is the deepest at 4,332 ft.
Where Mammoth Resource'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 Resource — well portfolio”, https://wellcensus.com/operators/mammoth-resource-113010 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).