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WellCensus

Oil & gas wells in Valley County, MT

637 catalogued wells in Valley County, Montana, from the state regulator registry and the federal orphaned-well inventory.

Dataset updated . Derived from public data sources.

At a glance

Valley County, Montana has 637 catalogued oil & gas wells: 171 active (27%), 412 plugged & abandoned (65%) and 10 documented orphans. It ranks 19th of the 41 Montana counties WellCensus profiles by well count and holds 2% of the state's 42,011 catalogued wells.

Catalogued wells

637

Active

171

Plugged

412

Documented orphans

10

What is the status of oil and gas wells in Valley County?

27% of Valley County's wells are active, 4 percentage points above the Montana share of 23%. 65% are plugged & abandoned, against 60% statewide and 47% nationally. 25 wells (4%) are shut-in — unplugged but idle. 10 wells (2%) are documented orphans with no operator able to plug them, compared with 0.6% across Montana and 4% nationally. The remaining 19 carry status codes outside those classes, such as permitted or cancelled locations.

What kinds of wells are in Valley County?

By product class, 114 of the county's wells (18%) are oil wells, 240 (38%) gas wells and 11 (2%) injection wells. Statewide the oil share is 30% and the gas share 24%. The deepest total depth published for a Valley County well is 11,270 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 Valley County compare with other Montana counties?

Valley County has the 19th-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 10th in Montana.

Who operates wells in Valley County?

151 distinct operators of record are linked to wells in Valley 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.

Oil & gas wells in Valley County, MT
WellAPI # / state IDStatusTypeOperator
Sandvick 1-1125-105-21278OrphanedOilNative American Energy Group, Inc.
Heringer 11-2125-105-21297OrphanedOilZimmerman, Brent
Cornwell 1-1425-105-21573Other statusOilWind River Hydrocarbons, Inc.
State 71425-105-05000Plugged & abandonedGasFidelity Exploration & Production Co.
Govt. 1-X25-105-05001Plugged & abandonedOther typeHarrison Etal
Govt. 125-105-05002Plugged & abandonedOther typeHarrison Etal
Federal Unit #125-105-05003Plugged & abandonedOther typeCalifornia Company, The
Federal 125-105-05004Plugged & abandonedOther typePlymouth Oil
S. Gifmaka 125-105-05005Plugged & abandonedOther typeFields, Burt
Yetter 225-105-05006Plugged & abandonedOther typeGlasgow Exploration Corp.
Yetter 125-105-05007Plugged & abandonedOther typeGlasgow Exploration Corp.
A.R. Belzer 125-105-05008Plugged & abandonedGasAmerada Hess Corporation
Mcintyre 33-1925-105-05009Plugged & abandonedOther typeMule Creek Oil
Molvig 125-105-05010Plugged & abandonedOther typeAmerada Hess Corporation
Nyquist Tract 125-105-05011Plugged & abandonedOther typeAmerada Hess Corporation
Federal 31-1125-105-05013Plugged & abandonedOther typeMule Creek Oil
Porteen A-125-105-05014Plugged & abandonedOther typeNorthern Natural Gas Producing Co.
Shell-Fee 125-105-05015Plugged & abandonedOther typeCalvert Drilling & Producing Co.
J.J. Loberg 125-105-05016Plugged & abandonedOther typeHunt Trust
Erickson 1-A25-105-05017Plugged & abandonedGasOdessa Natural Corporation
Loberg 125-105-05018Plugged & abandonedOther typeSeaboard Oil
USA Bridwell 125-105-05019Plugged & abandonedOther typeAmerada Hess Corporation
Schultz H-125-105-05021Plugged & abandonedOther typePhillips Petroleum Company
State 'H' 125-105-05022Plugged & abandonedOther typeAmerada Hess Corporation
R L Cornwall 125-105-05023Plugged & abandonedOther typeGulf Oil Corporation

A sample of the county’s wells — every catalogued well has its own page. Browse all 637 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 Valley County, MT?

Valley County, Montana has 637 catalogued oil & gas wells: 171 active, 412 plugged and 10 documented orphans.

How many orphaned wells are in Valley County?

10 wells in Valley County, Montana are documented orphans — unplugged with no solvent operator of record, the 10th-highest count among Montana counties.

What share of wells in Valley County are plugged?

412 of Valley County's 637 catalogued wells (65%) 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); Valley County ranks 19th with 637.

How many companies operate wells in Valley County?

151 distinct operators of record are linked to catalogued wells in Valley 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 Valley County, Montana”, https://wellcensus.com/wells/montana/valley (data as of October 10, 2026).