The largest oil and gas operators active in Wyoming — 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 WOGCC well-header records. Data current as of 2026-06-14.
As of 2026-06-14, the most active operator in Wyoming is Eog Resources with 13,396 wells on record and 76 recent permits, across the top 100 ranked operators, per Wyoming Oil & Gas Conservation Commission (WOGCC) records.
| # | Operator | Wells | Permits 24mo | DUCs | Producing | Top Formation | Top County |
|---|---|---|---|---|---|---|---|
| 1 | Eog Resources | 13,396 | 76 | 861 | 1,860 | Niobrara- Mowry | Campbell |
| 2 | Anadarko Petroleum | 7,155 | 79 | 505 | 498 | Niobrara- Mowry | Converse |
| 3 | Devon Energy Production Company | 6,169 | 62 | 336 | 1,984 | Niobrara- Mowry | Campbell |
| 4 | Anschutz Exploration | 6,062 | 233 | 166 | 350 | Powder River Basin | Campbell |
| 5 | Carbon Creek Energy | 5,313 | 0 | 63 | 5,245 | Powder River Basin | Johnson |
| 6 | Lance Oil & Gas Company | 4,039 | 0 | 278 | 2,310 | Niobrara- Mowry | Campbell |
| 7 | Purewest Resources INC | 3,764 | 124 | 73 | 3,530 | Mesaverde-Lance | Sublette |
| 8 | Pennaco Energy Incorporated | 3,713 | 0 | 103 | 2,519 | Powder River Basin | Campbell |
| 9 | Wold Energy Partners | 3,683 | 0 | 10 | 2 | Niobrara- Mowry | Converse |
| 10 | Crowheart Energy | 3,562 | 36 | 35 | 3,329 | Mesaverde-Lance-Lewis | Sweetwater |
| 11 | Contango Resources Company | 3,170 | 0 | 339 | 2,686 | Niobrara- Mowry | Natrona |
| 12 | Yates Petroleum | 3,018 | 0 | 180 | 1,619 | Niobrara- Mowry | Campbell |
| 13 | Huber J M | 3,004 | 0 | 119 | 1,695 | Powder River Basin | Sheridan |
| 14 | Jonah Energy | 2,950 | 28 | 133 | 2,523 | Mesaverde-Lance | Sublette |
| 15 | Williams Production Gulf Coast | 2,619 | 0 | 93 | 1,135 | Powder River Basin | Campbell |
| 16 | Samson Resources Company | 2,584 | 4 | 92 | 180 | Niobrara- Mowry | Converse |
| 17 | Fdl Operating | 2,514 | 0 | 638 | 948 | Niobrara- Mowry | Natrona |
| 18 | Wrc Energy LLC | 2,415 | 73 | 42 | 250 | Niobrara- Mowry | Campbell |
| 19 | Merit Energy Company | 2,383 | 0 | 238 | 2,068 | Big Horn Basin | Park |
| 20 | Atx Energy Partners | 2,040 | 0 | 8 | 10 | Powder River Basin | Johnson |
| 21 | Bpx Operating Company | 2,006 | 0 | 1,077 | 394 | Mesaverde-Lance-Lewis | Sweetwater |
| 22 | Hilcorp Energy Company | 1,902 | 1 | 30 | 1,856 | Hilliardbaxtermancos-Niobrara | Lincoln |
| 23 | Noble Energy | 1,897 | 0 | 5 | 15 | Mesaverde-Lance-Lewis | Johnson |
| 24 | Wave Petroleum Operating | 1,871 | 4 | 5 | 2 | Muddy J Sand | Laramie |
| 25 | Continental Resources | 1,852 | 67 | 128 | 710 | Niobrara- Mowry | Converse |
| 26 | Barrett Resources | 1,678 | 0 | 72 | 1,364 | Niobrara- Mowry | Campbell |
| 27 | Davis Oil Company | 1,677 | 0 | 1,558 | 60 | Powder River Basin | Campbell |
| 28 | Seven Sisters Oil & Gas | 1,626 | 0 | 1 | 1 | Powder River Basin | Campbell |
| 29 | Ballard Petroleum Holdings | 1,591 | 16 | 85 | 193 | Powder River Basin | Johnson |
| 30 | Marathon Oil Company | 1,567 | 0 | 820 | 376 | Big Horn Basin | Hot Springs |
| 31 | Pine Haven Resources | 1,476 | 0 | 23 | 142 | Niobrara- Mowry | Campbell |
| 32 | Conocophillips Company | 1,448 | 0 | 987 | 146 | Niobrara- Mowry | Converse |
| 33 | Anschutz Oil Company | 1,445 | 0 | 55 | 2 | Niobrara- Mowry | Campbell |
| 34 | True Oil | 1,423 | 2 | 898 | 353 | Niobrara- Mowry | Campbell |
| 35 | Gungnir Operating LLC | 1,422 | 0 | 3 | 0 | Codell-Niobrara | Goshen |
| 36 | Urban Oil & Gas Group | 1,385 | 0 | 5 | 1,369 | Hilliardbaxtermancos-Niobrara | Sublette |
| 37 | Titan Exploration | 1,359 | 0 | 12 | 16 | Niobrara- Mowry | Campbell |
| 38 | Sage Butte Prb Operating, LLC | 1,329 | 14 | 27 | 114 | Niobrara- Mowry | Converse |
| 39 | C M S Oil And Gas Company | 1,327 | 0 | 17 | 738 | Powder River Basin | Campbell |
| 40 | Pinnacle Gas Resources | 1,326 | 0 | 38 | 583 | Powder River Basin | Campbell |
| 41 | Green Reserve Energy Holdings LLC | 1,217 | 1 | 184 | 1,004 | Niobrara- Mowry | Natrona |
| 42 | Grayson Mill Operating | 1,199 | 0 | 1 | 2 | Niobrara- Mowry | Converse |
| 43 | Wexpro Company | 1,134 | 30 | 227 | 732 | Mesaverde-Lance-Lewis | Sweetwater |
| 44 | Wamsutter E And P LLC | 1,118 | 0 | 3 | 18 | Mesaverde-Lance-Lewis | Sweetwater |
| 45 | Bill Barrett | 1,094 | 0 | 36 | 501 | Niobrara- Mowry | Campbell |
| 46 | Impact Exploration Company | 1,094 | 5 | 18 | 4 | Niobrara- Mowry | Converse |
| 47 | Navigation Powder River | 1,072 | 0 | 9 | 17 | Niobrara- Mowry | Campbell |
| 48 | Kennedy Oil | 1,015 | 0 | 95 | 737 | Powder River Basin | Campbell |
| 49 | Prima Oil & Gas Company | 1,004 | 0 | 30 | 621 | Powder River Basin | Campbell |
| 50 | Fidelity Exploration & Production Company | 962 | 0 | 55 | 535 | Powder River Basin | Sheridan |
| 51 | Century Oil & Gas | 960 | 0 | 8 | 14 | Niobrara- Mowry | Niobrara |
| 52 | Red Stone Resources | 954 | 0 | 67 | 539 | Powder River Basin | Campbell |
| 53 | Citation Oil & Gas | 940 | 0 | 146 | 765 | Big Horn Basin | Campbell |
| 54 | North Silo Resources LLC | 919 | 1 | 22 | 58 | Muddy J Sand | Laramie |
| 55 | M & K Oil Company | 904 | 0 | 15 | 869 | Niobrara- Mowry | Weston |
| 56 | Denbury Onshore | 887 | 0 | 59 | 775 | Niobrara- Mowry | Campbell |
| 57 | Redstone Gas Partners | 819 | 0 | 59 | 430 | Powder River Basin | Johnson |
| 58 | Ultra Resources | 815 | 6 | 261 | 8 | Mesaverde-Lance | Sublette |
| 59 | Southland Royalty Company | 778 | 0 | 114 | 12 | Mesaverde-Lance-Lewis | Sweetwater |
| 60 | Nance Petroleum | 773 | 0 | 10 | 505 | Powder River Basin | Sheridan |
| 61 | Peak Powder River Resources | 744 | 3 | 35 | 106 | Niobrara- Mowry | Campbell |
| 62 | Black Diamond Energy | 732 | 0 | 203 | 225 | Powder River Basin | Johnson |
| 63 | Chevron | 710 | 0 | 336 | 241 | Green River Basin | Sublette |
| 64 | Chesapeake Energy | 702 | 0 | 109 | 8 | Niobrara- Mowry | Converse |
| 65 | North Finn | 641 | 0 | 54 | 234 | Powder River Basin | Campbell |
| 66 | Osage Partners | 636 | 0 | 227 | 381 | Powder River Basin | Weston |
| 67 | Howell Petroleum | 627 | 0 | 320 | 204 | Niobrara- Mowry | Natrona |
| 68 | Breitburn Operating | 607 | 0 | 13 | 577 | Hilliardbaxtermancos-Niobrara | Sweetwater |
| 69 | Shell Oil Company | 565 | 0 | 330 | 8 | Mesaverde-Lance | Sublette |
| 70 | Longs Peak Resources | 563 | 7 | 15 | 8 | Muddy J Sand | Laramie |
| 71 | Bright Rock Energy LLC | 541 | 0 | 6 | 0 | Niobrara- Mowry | Converse |
| 72 | Rockies Resources Holdings | 539 | 14 | 10 | 50 | Mesaverde-Lance-Lewis | Sweetwater |
| 73 | Rim Operating | 536 | 0 | 66 | 375 | Niobrara- Mowry | Campbell |
| 74 | Encana Oil & Gas | 536 | 0 | 83 | 58 | Mesaverde-Lance | Sublette |
| 75 | Amoco Production Company | 527 | 0 | 41 | 310 | Mesaverde-Lance-Lewis | Sweetwater |
| 76 | Westport Oil & Gas Company | 518 | 0 | 167 | 263 | Niobrara- Mowry | Campbell |
| 77 | Cassidy American Resources LLC | 517 | 0 | 0 | 0 | Niobrara- Mowry | Johnson |
| 78 | Elephant Operating | 508 | 0 | 2 | 1 | Niobrara- Mowry | Converse |
| 79 | Atlantic Richfield Company | 500 | 0 | 414 | 21 | Green River Basin | Sweetwater |
| 80 | Windsor Energy Group | 497 | 0 | 17 | 309 | Powder River Basin | Johnson |
| 81 | Exxon Mobil | 486 | 2 | 332 | 70 | Green River Basin | Sublette |
| 82 | Petrocanada Resources | 476 | 0 | 115 | 186 | Powder River Basin | Campbell |
| 83 | Comet Energy Services | 449 | 0 | 21 | 137 | Powder River Basin | Campbell |
| 84 | Sunshine Valley Petroleum | 446 | 0 | 20 | 398 | Niobrara- Mowry | Weston |
| 85 | Martens & Peck Operating Company | 443 | 0 | 222 | 1 | Niobrara- Mowry | Campbell |
| 86 | Phillips Petroleum Company | 439 | 0 | 158 | 146 | Niobrara- Mowry | Campbell |
| 87 | Rki Exploration & Production | 432 | 0 | 9 | 9 | Niobrara- Mowry | Converse |
| 88 | Coleman Oil & Gas | 430 | 0 | 19 | 236 | Niobrara- Mowry | Campbell |
| 89 | Wesco Operating | 408 | 1 | 72 | 308 | Wind River Basin | Fremont |
| 90 | Texaco Exploration And Production | 379 | 0 | 232 | 88 | Powder River Basin | Sweetwater |
| 91 | Amplify Energy Operating | 377 | 0 | 86 | 285 | Green River Basin | Sweetwater |
| 92 | Continental Industries LC | 373 | 0 | 61 | 172 | Powder River Basin | Sheridan |
| 93 | Matrix Production Company | 370 | 0 | 2 | 366 | Niobrara- Mowry | Converse |
| 94 | Eme Wyoming LLC | 363 | 0 | 1 | 1 | Codell-Niobrara | Goshen |
| 95 | Ch4 Energy | 348 | 0 | 3 | 229 | Powder River Basin | Campbell |
| 96 | Midgard Energy Company | 344 | 0 | 267 | 60 | Niobrara- Mowry | Campbell |
| 97 | Richardson Operating Company | 329 | 0 | 77 | 234 | Wind River Basin | Fremont |
| 98 | Big Basin Petroleum | 326 | 0 | 15 | 197 | Powder River Basin | Campbell |
| 99 | Northwest Energy | 325 | 0 | 36 | 105 | Powder River Basin | Johnson |
| 100 | Pacific Enterprises Oil Company | 314 | 0 | 220 | 28 | Powder River Basin | Campbell |
Source: Wyoming Oil & Gas Conservation Commission 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 Wyoming — 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 2026-06-14.
Whether your operator is on this list or not, your Wyoming mineral interest may be more valuable than you think. Get a free, no-obligation written offer.
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State: Wyoming
Operators ranked: 100
Total wells: 154,421
Permits (24mo): 889
Last refresh: 2026-06-14
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