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Fallon County, MT oil and gas wells

2,769 wells: 1,532 active, 680 plugged, run by 131 operators.

Figures from the Montana Board of Oil and Gas Conservation, updated 2026-10-19.

Top operators in Fallon

OperatorActiveWells here
Ridge Oil & Gas, LLC898940
MMGL MT I, LLC591884
Continental Resources Inc2431
Wesco Operating, Inc.821
Jurassic Resources Development NA LLC34
City of Baker22
Badlands Resource Recovery, Inc.12
D&A Water Disposal LLC12
Dukart, Kevin & Jennifer11
Gunderson Farms, Inc.11
Halmans, Hubertus & Eleanor A.11
Norbeck Company11
WBI Energy Transmission, Inc.0199
Shell Oil Company076
Fidelity Exploration & Production Co.071
Shell Western E & P Inc.066
Mon-Dak Utilities Co. & Fidelity Gas Co.060
Williston Basin Interstate Pipeline Company059
Encore Operating LP051
Denbury Onshore, LLC034
Burlington Resources Oil & Gas Company LP030
Remuda Energy Development, LLC017
Scout Energy Management LLC012
Bowers Oil & Gas, Inc.09
Pan American Petroleum07

Wells

Not plugged · All wells · Plugged · Orphaned

WellAPI / IDStatusTypeOperator
UNIT 21-25A 25-025-05740Plugged InjectionShell Western E & P Inc.
UNIT 22 33 25-025-05125Plugged Dry holeShell Oil Company
UNIT 22-33 25-025-05465Plugged OilShell Oil Company
UNIT 23-25A 25-025-05608Plugged InjectionShell Oil Company
UNIT 23X 26 25-025-05118Plugged Dry holeShell Oil Company
UNIT 23X-30E 25-025-21140Plugged Dry holeShell Oil Company
UNIT 23X-36A 25-025-05598Plugged OilShell Oil Company
UNIT 32X-05R 25-025-05065Plugged InjectionShell Oil Company
UNIT 32X-06 25-025-05062Plugged Water supplyShell Oil Company
UNIT 32X-33 25-025-05463Plugged OilShell Western E & P Inc.
UNIT 33X-08 25-025-05052Plugged OilShell Oil Company
UNIT 34-11 25-025-05045Plugged OilShell Oil Company
UNIT 41-12 WI 25-025-05570Plugged InjectionEncore Operating LP
UNIT 44-36 25-025-05738Plugged OilShell Oil Company
UNIT 44X-33 WI 25-025-05445Plugged InjectionShell Oil Company
UNIT 8-B 44-13 25-025-21419Plugged Dry holeShell Western E & P Inc.
UNIT M21-29 25-025-05501Plugged OilShell Western E & P Inc.
UNIT M33X-29 25-025-05485Plugged OilShell Western E & P Inc.
UNIT M44-29 25-025-05476Plugged OilShell Oil Company
USA 42-3 25-025-21398Plugged OilWesco Operating, Inc.
Unit 11-08 25-025-05568Plugged OilShell Oil Company
Unit 11-32C 25-025-21179Plugged OilEncore Operating LP
Unit 11-34 25-025-22498Plugged OilDenbury Onshore, LLC
Unit 11M-1-NP 25-025-05262Plugged InjectionShell Oil Company
Unit 11X-33R 25-025-05467Plugged OilEncore Operating LP
Unit 12-20 25-025-05518Plugged Dry holeShell Western E & P Inc.
Unit 12X-17 25-025-05537Plugged DisposalShell Western E & P Inc.
Unit 12X-20BH 25-025-22724Plugged Dry holeEncore Operating LP
Unit 13-20C 25-025-21432Plugged InjectionEncore Operating LP
Unit 13-23H 25-025-05326Plugged OilDenbury Onshore, LLC
Unit 13-24 25-025-21139Plugged InjectionDenbury Onshore, LLC
Unit 13-32C 25-025-21160Plugged InjectionEncore Operating LP
Unit 13-34 25-025-21906Plugged OilDenbury Onshore, LLC
Unit 13-35 25-025-05069Plugged Water supplyEncore Operating LP
Unit 13-4 Relief 25-025-21395Plugged Dry holeShell Western E & P Inc.
Unit 13X-11 25-025-21108Plugged OilShell Western E & P Inc.
Unit 13X-12 25-025-21124Plugged InjectionDenbury Onshore, LLC
Unit 13X-13 25-025-21109Plugged InjectionDenbury Onshore, LLC
Unit 13X-28B 25-025-21159Plugged OilEncore Operating LP
Unit 13X-5B 25-025-21078Plugged InjectionEncore Operating LP
Unit 13X-8 25-025-05049Plugged Water supplyShell Oil Company
Unit 13X-8B 25-025-21224Plugged InjectionDenbury Onshore, LLC
Unit 14-03H 25-025-05432Plugged OilDenbury Onshore, LLC
Unit 14-17 SWD 25-025-05528Plugged DisposalShell Western E & P Inc.
Unit 14-22 25-025-05506Plugged InjectionShell Western E & P Inc.
Unit 14-27 25-025-05074Plugged InjectionEncore Operating LP
Unit 14-7 25-025-05552Plugged OilShell Western E & P Inc.
Unit 14-8 25-025-05547Plugged InjectionEncore Operating LP
Unit 14X-24 25-025-21424Plugged OilShell Western E & P Inc.
Unit 14X-2WI 25-025-01498Plugged InjectionEncore Operating LP
Unit 14X-6 25-025-05572Plugged InjectionEncore Operating LP
Unit 21X-33 WI 25-025-21002Plugged InjectionDenbury Onshore, LLC
Unit 22-18B 25-025-05228Plugged InjectionEncore Operating LP
Unit 22-18C 25-025-05348Plugged OilEncore Operating LP
Unit 22-20 25-025-05027Plugged Water supplyShell Oil Company
Unit 22-32 25-025-05003Plugged InjectionEncore Operating LP
Unit 22-4 25-025-05159Plugged OilEncore Operating LP
Unit 22-6 25-025-05589Plugged OilShell Western E & P Inc.
Unit 22-8 25-025-05560Plugged OilShell Oil Company
Unit 22X-36 25-025-05284Plugged OilEncore Operating LP
Unit 23-5 25-025-05582Plugged InjectionEncore Operating LP
Unit 23X-17 25-025-05531Plugged InjectionShell Western E & P Inc.
Unit 24-04H 25-025-05383Plugged OilDenbury Onshore, LLC
Unit 24-19B 25-025-05722Plugged InjectionShell Western E & P Inc.
Unit 24-19H 25-025-05017Plugged OilDenbury Onshore, LLC
Unit 24-28B 25-025-05179Plugged OilShell Western E & P Inc.
Unit 24-29C 25-025-05290Plugged OilEncore Operating LP
Unit 24-30C-R 25-025-21175Plugged OilEncore Operating LP
Unit 24-32CH 25-025-05269Plugged OilDenbury Onshore, LLC
Unit 24-4 25-025-05154Plugged Water supplyDenbury Onshore, LLC
Unit 24-6 25-025-05734Plugged OilShell Western E & P Inc.
Unit 24-7C 25-025-05359Plugged OilEncore Operating LP
Unit 24-8 25-025-05549Plugged OilShell Oil Company
Unit 24-9B 25-025-05235Plugged OilEncore Operating LP
Unit 24X-17 25-025-05525Plugged OilShell Oil Company
Unit 24X-8 25-025-05048Plugged InjectionEncore Operating LP
Unit 24X-8BR 25-025-21127Plugged OilEncore Operating LP
Unit 31-19C 25-025-21370Plugged InjectionEncore Operating LP
Unit 31-22 25-025-05712Plugged Dry holeEncore Operating LP
Unit 31-22R 25-025-21399Plugged Water supplyDenbury Onshore, LLC
Unit 31-25 25-025-21166Plugged OilShell Western E & P Inc.
Unit 31-31C 25-025-21182Plugged InjectionEncore Operating LP
Unit 31-32CH 25-025-21180Plugged InjectionEncore Operating LP
Unit 31-7 25-025-05569Plugged OilShell Oil Company
Unit 31X-07R 25-025-05564Plugged OilShell Oil Company
Unit 31X-15 25-025-21469Plugged InjectionEncore Operating LP
Unit 31X-19 25-025-21433Plugged Dry holeShell Western E & P Inc.
Unit 31X-32 25-025-05006Plugged InjectionEncore Operating LP
Unit 32-03 25-025-05434Plugged OilShell Oil Company
Unit 32-08 25-025-05559Plugged OilEncore Operating LP
Unit 32-17 25-025-05538Plugged OilShell Western E & P Inc.
Unit 32-21 25-025-05084Plugged Dry holeShell Western E & P Inc.
Unit 32-28 25-025-05078Plugged OilShell Western E & P Inc.
Unit 32-7 25-025-05562Plugged OilShell Western E & P Inc.
Unit 32X-34 25-025-05072Plugged InjectionEncore Operating LP
Unit 33-18CH 25-025-21344Plugged OilEncore Operating LP
Unit 33-19 25-025-05023Plugged OilShell Western E & P Inc.
Unit 33-24 25-025-21254Plugged OilEncore Operating LP
Unit 33-6 25-025-05583Plugged OilShell Western E & P Inc.
Unit 33X-29CH 25-025-22710Plugged Dry holeEncore Operating LP

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