Oil & gas wells in Mccone County, MT
333 catalogued wells in Mccone County, Montana, from the state regulator registry and the federal orphaned-well inventory.
Dataset updated . Derived from public data sources.
At a glance
Mccone County, Montana has 333 catalogued oil & gas wells: 2 active (0.6%), 317 plugged & abandoned (95%) and 3 documented orphans. It ranks 26th of the 41 Montana counties WellCensus profiles by well count and holds 0.8% of the state's 42,011 catalogued wells.
Catalogued wells
333
Active
2
Plugged
317
Documented orphans
3
What is the status of oil and gas wells in Mccone County?
0.6% of Mccone County's wells are active, 23 percentage points below the Montana share of 23%. 95% are plugged & abandoned, against 60% statewide and 47% nationally. 6 wells (2%) are shut-in — unplugged but idle. 3 wells (0.9%) are documented orphans with no operator able to plug them, compared with 0.6% across Montana and 4% nationally. The remaining 5 carry status codes outside those classes, such as permitted or cancelled locations.
What kinds of wells are in Mccone County?
By product class, 67 of the county's wells (20%) are oil wells, 1 (0.3%) gas wells and 15 (5%) injection wells. Statewide the oil share is 30% and the gas share 24%. The deepest total depth published for a Mccone County well is 11,665 ft, against 31,810 ft for Montana as a whole. 100% of the county's wells carry coordinates and appear on the map.
How does Mccone County compare with other Montana counties?
Mccone County has the 26th-most catalogued wells of the 41 Montana counties with at least 25. The median Montana county on WellCensus has 457 wells. The largest, Toole County, has 7,830. By documented orphans it ranks 19th in Montana.
Who operates wells in Mccone County?
138 distinct operators of record are linked to wells in Mccone County. 100% of the county's wells carry a link to a canonical operator profile; the rest list no operator or a name not yet resolved. Each well's page names its operator where the state publishes one.
Wells in Mccone County
🔒 Create a free account to export CSV| Well | API # / state ID | Status | Type | Operator |
|---|---|---|---|---|
| Waller F-11-20-P | 25-055-00050 | Plugged & abandoned | Other type | Socony-Mobil Oil |
| State 1 | 25-055-05000 | Plugged & abandoned | Other type | Pan American Petroleum |
| Hinnaland 1 | 25-055-05001 | Plugged & abandoned | Other type | Signal Drilling & Expl. Co. Inc. |
| State-Mccone<>1 | 25-055-05003 | Plugged & abandoned | Other type | Atlantic Richfield Company |
| Govt 1-A | 25-055-05005 | Plugged & abandoned | Other type | Signal Drilling & Expl. Co. Inc. |
| Twitchell-Federal 1 | 25-055-05006 | Plugged & abandoned | Other type | Davis Oil Company |
| Oliver Collins 1 | 25-055-05009 | Plugged & abandoned | Other type | Signal Drilling & Expl. Co. Inc. |
| Nprr 1-17 | 25-055-05010 | Plugged & abandoned | Other type | States Oil |
| Nprr 1-A | 25-055-05011 | Plugged & abandoned | Other type | Apco Oil Corp. |
| Grindvold 1 | 25-055-05013 | Plugged & abandoned | Other type | Apco Oil Corp. |
| Harold Waller 1 | 25-055-05014 | Plugged & abandoned | Other type | Signal Drilling & Expl. Co. Inc. |
| Dorothy Rosseland 1 | 25-055-05015 | Other status | Other type | Signal Drilling & Expl. Co. Inc. |
| Nprr 12-5 | 25-055-05016 | Plugged & abandoned | Other type | Shell Oil Company |
| R A Nerud 1 | 25-055-05017 | Plugged & abandoned | Other type | States Oil |
| Nprr 32-33b | 25-055-05019 | Plugged & abandoned | Other type | Shell Oil Company |
| Nprr 12-33-B | 25-055-05020 | Plugged & abandoned | Other type | Shell Oil Company |
| A Nprr 22-35 | 25-055-05021 | Plugged & abandoned | Other type | Shell Oil Company |
| Swru Tr3 | 25-055-05022 | Plugged & abandoned | Oil | Striper Oil, Inc. |
| Swru Tr4 1 | 25-055-05024 | Plugged & abandoned | Oil | Striper Oil, Inc. |
| Well No. 5-2 | 25-055-05025 | Plugged & abandoned | Oil | Delta Petroleum, Inc. |
| Nprr 21-33-B | 25-055-05026 | Plugged & abandoned | Oil | Shell Oil Company |
| Federal-Brown 1 | 25-055-05028 | Plugged & abandoned | Other type | Tiger Oil Company |
| G L Jacobs 1 | 25-055-05031 | Plugged & abandoned | Other type | Ohio Oil Company |
| Cole 24-28b | 25-055-05032 | Plugged & abandoned | Other type | Shell Western E & P Inc. |
| Well No. 2-3 | 25-055-05033 | Plugged & abandoned | Injection | Delta Petroleum, Inc. |
A sample of the county’s wells — every catalogued well has its own page. Browse all 333 in search → (filter by operator, status and type, then export), or find a specific well on the live map.
Frequently asked questions
How many oil and gas wells are in Mccone County, MT?
Mccone County, Montana has 333 catalogued oil & gas wells: 2 active, 317 plugged and 3 documented orphans.
How many orphaned wells are in Mccone County?
3 wells in Mccone County, Montana are documented orphans — unplugged with no solvent operator of record, the 19th-highest count among Montana counties.
What share of wells in Mccone County are plugged?
317 of Mccone County's 333 catalogued wells (95%) are plugged & abandoned, compared with 60% across Montana.
Which Montana county has the most oil and gas wells?
Toole County has the most catalogued wells of any Montana county on WellCensus (7,830); Mccone County ranks 26th with 333.
How many companies operate wells in Mccone County?
138 distinct operators of record are linked to catalogued wells in Mccone County, Montana.
Nearby in the Montana rankings
About this data
Source: Montana Board of Oil & Gas Conservation well registry, plus the USGS United States Documented Orphaned Well Database (2026, doi 10.5066/P13FHBYG), as published October 10, 2026 — WellCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.
Cite as: WellCensus, “Oil & gas wells in Mccone County, Montana”, https://wellcensus.com/wells/montana/mccone (data as of October 10, 2026).