Pennaco Energy
Operator of record for 1,089 catalogued wells across 2 states. Every well below links to its full registry page.
Filed as: PENNACO ENERGY INCORPORATED · Pennaco Energy, Inc.
At a glance
Pennaco Energy is the operator of record for 1,089 catalogued U.S. oil & gas wells in 2 states. None is listed as active, 1,085 (100%) are plugged & abandoned. Its largest concentration is in Wyoming, with 1,088 wells (100% of its portfolio).
Wells operated
1,089
Active
0
Plugged
1,085
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Wyoming | 1,088 |
| Montana | 1 |
Well mix
- Oil wells
- 1
- Gas wells
- 1,032
- Shut-in
- 3
- Active share
- 0%
Is this your company?
Claim Pennaco Energy to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Pennaco Energy operate?
Pennaco Energy's catalogued wells are spread across 2 states: Wyoming (1,088) and Montana (1). Its 1,088 Wyoming wells are 0.8% of the 129,957 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 Pennaco Energy’s wells are active, plugged or orphaned?
0% of Pennaco Energy's catalogued wells are active, 29 percentage points below the national share of 29%. 100% are plugged & abandoned, against 47% nationally. 3 wells (0.3%) are shut-in — unplugged but idle. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Pennaco Energy operate?
By product class, 1 (0.1%) are oil wells and 1,032 (95%) gas wells; nationally the shares are 43% and 17%. The deepest of its wells with a published depth is Shell 12-22 in Campbell, WY at 10,725 ft. The wells listed below sit in Campbell (WY) and Sheridan (WY). 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 Pennaco Energy
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Shell 12-22 | 49-005-27120 | Plugged & abandoned | Oil | Campbell, WY | Pennaco Energy Incorporated | 10,725 ft |
| Willey 7-23-55-83 Mz/Cr | 49-033-27639 | Plugged & abandoned | Gas | Sheridan, WY | Pennaco Energy Incorporated | 2,505 ft |
| Willey 9-23-55-83mz/Cr | 49-033-27800 | Plugged & abandoned | Gas | Sheridan, WY | Pennaco Energy Incorporated | 2,499 ft |
| Koltiska 9-27-55-83 Mz/Cr | 49-033-24926 | Plugged & abandoned | Gas | Sheridan, WY | Pennaco Energy Incorporated | 2,495 ft |
| Willey 5-24-55-83 Mz/Cr | 49-033-27642 | Plugged & abandoned | Gas | Sheridan, WY | Pennaco Energy Incorporated | 2,464 ft |
| Burgess 3-6-55-82 Mz/Cr | 49-033-27523 | Plugged & abandoned | Gas | Sheridan, WY | Pennaco Energy Incorporated | 2,463 ft |
| Farmland Reserve 3-1-55-83 Mz/Cr | 49-033-27096 | Plugged & abandoned | Gas | Sheridan, WY | Pennaco Energy Incorporated | 2,459 ft |
| Farmland Reserve 13-7-55-82 Mz/Cr | 49-033-24713 | Plugged & abandoned | Gas | Sheridan, WY | Pennaco Energy Incorporated | 2,459 ft |
| Farmland Reserve 9-1-55-83 Mz/Cr | 49-033-27071 | Plugged & abandoned | Gas | Sheridan, WY | Pennaco Energy Incorporated | 2,457 ft |
| Burgess 5-6-55-82 Mz/Cr | 49-033-27066 | Plugged & abandoned | Gas | Sheridan, WY | Pennaco Energy Incorporated | 2,457 ft |
| Farmland Reserve 15-36-56-83 Mz/Cr | 49-033-24653 | Plugged & abandoned | Gas | Sheridan, WY | Pennaco Energy Incorporated | 2,455 ft |
| Vista Alta State 1-16-55-83 Mz/Cr | 49-033-27663 | Plugged & abandoned | Gas | Sheridan, WY | Pennaco Energy Incorporated | 2,446 ft |
Deepest first where depth is published. See all 1,089 wells →
Frequently asked questions
How many wells does Pennaco Energy operate?
Pennaco Energy is the operator of record for 1,089 catalogued oil & gas wells, with the largest concentration in Wyoming (1,088). Only wells in states WellCensus has ingested are counted.
How many of Pennaco Energy's wells are still active?
0 of Pennaco Energy's catalogued wells are active; 1,085 are plugged & abandoned.
In which states does Pennaco Energy operate wells?
Pennaco Energy is the operator of record for wells in Wyoming (1,088) and Montana (1).
Does Pennaco Energy operate mostly oil or gas wells?
1 of Pennaco Energy's catalogued wells are oil wells and 1,032 are gas wells; the rest are injection, service or unclassified wells.
What is Pennaco Energy's deepest well?
Among wells with a published depth, Shell 12-22 in Campbell, WY is the deepest at 10,725 ft.
Where Pennaco Energy'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, “Pennaco Energy — well portfolio”, https://wellcensus.com/operators/pennaco-energy-6710 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).