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Top Montana Oil & Gas Operators

The largest oil and gas operators active in Montana — ranked by total well count, with recent drilling activity, DUC inventory, and producing-well counts for each. Click any operator to see their full profile and current permits.

Refreshed monthly from BOGC well-header records. Data current as of 2026-07-04.

Original Data As of 2026-07-04

As of 2026-07-04, the most active operator in Montana is Ridge Oil & Gas with 2,769 wells on record, across the top 100 ranked operators, per Montana Board of Oil & Gas Conservation (BOGC) records.

Ridge Oil & Gas
Most active operator
2,769 wells
Wells on record (top operator)
100
Operators ranked
Source: Montana Board of Oil & Gas Conservation (BOGC) well-header records
Methodology: Operators ranked by total well count, with recent permits, DUC inventory, and producing-well counts aggregated per operator.
Updated: Refreshed monthly — data current as of 2026-07-04
Operators Ranked
100
Combined Wells
26,110
Recent Permits (24mo)
141
Combined DUCs
7,913
#OperatorWellsPermits 24moDUCsProducingTop FormationTop County
1 Ridge Oil & Gas 2,769 0 11 2,758 Bowdoin-Greenhorn Phillips
2 Fidelity Exploration & Production Company 1,610 0 65 1,165 Powder River Basin Big Horn
3 Northwestern 1,601 3 160 1,422 Niobrara Fm Blaine
4 Somont Oil Company 1,006 0 119 848 Sweetgrass Arch Toole
5 Mmgl Mt I, LLC 968 0 181 783 Judith River- Eagle Fallon
6 New Horizon Resources 933 0 326 602 Sweetgrass Arch Glacier
7 Denbury Onshore 691 0 207 460 Powder River Basin Powder River
8 Mcr 581 0 122 445 Sweetgrass Arch Toole
9 Montana Power Company 517 0 370 50 Sweetgrass Arch Toole
10 Brown J Burns Operating Company 516 0 373 88 Niobrara Fm Blaine
11 Morning Star Oil Company 495 15 5 481 Bakken Richland
12 Continental Resources 491 22 37 375 Bakken Richland
13 Texaco Exploration And Production 486 0 327 14 Sweetgrass Arch Toole
14 Montalban Oil Etal 434 0 41 374 Sweetgrass Arch Glacier
15 A B Energy 380 0 6 374 Sweetgrass Arch Toole
16 True Oil 374 0 202 42 Central Montana Uplift Musselshell
17 Shell Oil Company 366 0 225 14 Judith River- Eagle Fallon
18 Ocean Energy 327 0 199 54 Niobrara Fm Hill
19 Devon Energy Production Company 318 0 134 79 Niobrara Fm Hill
20 Keesun 285 0 76 194 Sweetgrass Arch Toole
21 Fx Drilling Company 280 0 100 164 Sweetgrass Arch Glacier
22 Cardinal Petroleum 272 0 187 0 Sweetgrass Arch Toole
23 Klabzuba Oil & Gas 271 0 140 106 Niobrara Fm Hill
24 Kraken Operating 270 68 21 224 Williston Basin Richland
25 Summit Gas Resources 243 0 34 164 Powder River Basin Big Horn
26 White Rock Oil & Gas 235 9 11 224 Bakken Richland
27 Balko 220 0 30 189 Sweetgrass Arch Pondera
28 Norfolk Energy 220 0 203 2 Niobrara Fm Blaine
29 Conocophillips Company 217 0 106 9 Heath Fm Rosebud
30 H&R Energy 215 0 14 201 Sweetgrass Arch Toole
31 Union Oil Company Of California 211 0 151 21 Sweetgrass Arch Glacier
32 Phillips Petroleum Company 205 0 146 5 Sweetgrass Arch Glacier
33 Wbi Energy Transmission 203 0 121 6 Judith River- Eagle Fallon
34 Equitable Resources Exploration 189 0 118 22 Sweetgrass Arch Pondera
35 Burlington Resources Oil & Gas Company 187 0 76 35 Judith River- Eagle Fallon
36 Encore Operating 185 0 81 39 Judith River- Eagle Fallon
37 Ranck Oil Company 184 0 23 153 Sweetgrass Arch Toole
38 Western Natural Gas Company 179 0 64 97 Sweetgrass Arch Toole
39 Powder River Gas 165 0 11 0 Powder River Basin Powder River
40 High Crest Oils 162 0 155 1 Niobrara Fm Hill
41 Citation Oil & Gas 160 0 33 122 Niobrara Fm Blaine
42 Quicksilver Resources 154 0 86 63 Sweetgrass Arch Glacier
43 Sohio Petroleum Company 152 0 99 0 Sweetgrass Arch Chouteau
44 Fulton Producing Company 151 0 114 2 Sweetgrass Arch Toole
45 Slawson Exploration Company 149 12 21 64 Bakken Richland
46 Amerada Hess 145 0 68 1 Central Montana Uplift Musselshell
47 D90 Energy 145 0 26 119 Bakken Sheridan
48 Fuel Resources Development Company 145 0 124 1 Central Montana Uplift Blaine
49 Oasis Petroleum North America 142 6 14 100 Bakken Roosevelt
50 Whiting Petroleum CORP 138 6 6 85 Bakken Richland
51 Mcalester Fuel Company 137 0 50 0 Heath Fm Musselshell
52 Mont Mil Operating Company 133 0 120 10 Sweetgrass Arch Pondera
53 Omimex Canada 132 0 67 33 Sweetgrass Arch Liberty
54 Mondak Utilities Company & Fidelity Gas Company 126 0 67 0 Judith River- Eagle Fallon
55 K2 America 126 0 52 25 Sweetgrass Arch Glacier
56 Texas Pacific Oil Company 125 0 42 0 Sweetgrass Arch Toole
57 Cenex 124 0 51 24 Central Montana Uplift Petroleum
58 Williston Basin Interstate Pipeline Company 122 0 57 48 Judith River- Eagle Fallon
59 Cline Production Company 121 0 28 90 Heath Fm Rosebud
60 Bacon J R Drilling 120 0 48 2 Sweetgrass Arch Toole
61 Carter Oil Company 116 0 80 1 Sweetgrass Arch Glacier
62 Amoco Production Company 116 0 74 10 Big Horn Basin Carbon
63 Ohio Oil Company 116 0 59 0 Sweetgrass Arch Toole
64 Highline Exploration 116 0 17 88 Powder River Basin Big Horn
65 Midlands Energy CO 112 0 74 2 Bowdoin-Greenhorn Phillips
66 Cavalier Petroleum 111 0 28 80 Sweetgrass Arch Toole
67 Gulf Oil 110 0 75 0 Williston Basin Blaine
68 Elenburg Exploration 110 0 101 0 Sweetgrass Arch Chouteau
69 Exxon Mobil 109 0 69 36 Williston Basin Valley
70 Cut Bank Resources 106 0 54 37 Sweetgrass Arch Glacier
71 Atlantic Richfield Company 105 0 62 0 Williston Basin Valley
72 Lone Wolf Operating Company 104 0 14 88 Niobrara Fm Blaine
73 Poplar Resources LLC 103 0 21 79 Bakken Roosevelt
74 Kipling Energy Incorporated 102 0 33 55 Sweetgrass Arch Toole
75 Encana Oil & Gas 102 0 26 14 Niobrara Fm Blaine
76 California Company 101 0 52 0 Sweetgrass Arch Toole
77 Beartooth Oil & Gas Company 99 0 41 54 Heath Fm Musselshell
78 Croft Petroleum Company 99 0 62 17 Sweetgrass Arch Toole
79 Sands Oil Company 98 0 26 56 Sweetgrass Arch Toole
80 Murphy Exploration & Production Company 98 0 79 10 Bakken Roosevelt
81 Comanche Drilling Company 95 0 60 15 Sweetgrass Arch Toole
82 Contango Resources Company 93 0 6 87 Big Horn Basin Carbon
83 Kingsherwood Oil 93 0 20 68 Sweetgrass Arch Toole
84 Provident Energy Of Montana 93 0 15 77 Sweetgrass Arch Pondera
85 Sumatra Oil 93 0 60 0 Sweetgrass Arch Toole
86 Hawley Oil Company 92 0 12 72 Sweetgrass Arch Pondera
87 Tomahawk Oil Company 91 0 27 61 Heath Fm Rosebud
88 Ep Energy E And P Company 91 0 75 3 Sweetgrass Arch Hill
89 Redstone Gas Partners 91 0 12 0 Powder River Basin Big Horn
90 Davis Oil Company 89 0 74 0 Powder River Basin Powder River
91 Placid Oil Company 89 0 77 1 Powder River Basin Carter
92 Ang Holding USA CORP 88 0 34 53 Central Montana Uplift Blaine
93 Mogo Reagan LLC 87 0 4 83 Sweetgrass Arch Glacier
94 Tarrant R C 87 0 59 0 Sweetgrass Arch Glacier
95 Farmers Union Central Exchange 87 0 42 0 Heath Fm Sheridan
96 Montana Energy Company LLC 86 0 20 66 Central Montana Uplift Rosebud
97 Petrohunt 85 0 21 52 Bakken Richland
98 Pan American Petroleum 81 0 49 0 Sweetgrass Arch Hill
99 Luff Exploration Company 79 0 42 22 Bakken Richland
100 Noble Energy 79 0 6 40 Bowdoin-Greenhorn Phillips

About This Leaderboard

Source: Montana Board of Oil & Gas Conservation well-header records.

Ranking: Operators ranked by total well count under their current operator-of-record. Recent permits cover the last 24 months; DUC count is wells spudded but not yet producing; producing-well count is wells with a first-production date on file.

Why it matters: Knowing who operates the most wells in Montana — and who's drilling the most NOW — helps mineral owners understand who they're dealing with at the lease level.

Refresh cadence: Monthly. Data current as of 2026-07-04.

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Quick Stats

State: Montana

Operators ranked: 100

Total wells: 26,110

Permits (24mo): 141

Last refresh: 2026-07-04

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