The largest oil and gas operators active in Oklahoma — ranked by total well count, with producing-well counts for each. Click any operator to see their full profile.
Buckhead Energy analysis of public oil and gas data. Refreshed daily. Data current as of 2026-11-01.
Quick answer: By wells operated, Citation Oil & Gas is the largest oil and gas operator in Oklahoma with 9,096 wells on record, followed by Chesapeake Energy (6,942) and State Fund Plugging (4,176). Ranked from Buckhead Energy analysis of public oil and gas data (as of 2026-11-01). This is an operated-well-count ranking, not a revenue or market-cap ranking.
As of 2026-11-01, the largest operator by wells on record in Oklahoma is Citation Oil & Gas with 9,096 wells on record, across the top 100 ranked operators, per Buckhead Energy analysis of public oil and gas data.
| # | Operator | Wells | Producing | Top Formation | Top County |
|---|---|---|---|---|---|
| 1 | Citation Oil & Gas | 9,096 | 3,524 | South Oklahoma Folded Belt | Carter |
| 2 | Chesapeake Energy | 6,942 | 2,088 | Anadarko Basin | Woods |
| 3 | State Fund Plugging | 4,176 | 217 | Excello-Mulky | Nowata |
| 4 | Diversified Production LLC | 4,084 | 3,906 | Anadarko Basin | Woodward |
| 5 | Bcemach | 2,558 | 2,429 | Anadarko Basin | Woods |
| 6 | Bcemach Iii LLC | 2,482 | 2,113 | Anadarko Basin | Kingfisher |
| 7 | Xto Energy | 2,397 | 1,226 | Anadarko Basin | Carter |
| 8 | Continental Resources | 2,268 | 1,527 | Anadarko Basin | Grady |
| 9 | Merit Energy Company | 2,247 | 1,672 | Arkoma Basin | Latimer |
| 10 | Conocophillips Company | 2,225 | 439 | Anadarko Basin | Texas |
| 11 | Exxon Mobil | 2,112 | 686 | Excello-Mulky | Creek |
| 12 | Devon Energy Production Company | 2,077 | 1,566 | Woodford | Canadian |
| 13 | Sandridge Exploration & Production | 2,055 | 1,699 | Anadarko Basin | Alfalfa |
| 14 | Gateway Resources | 1,905 | 1,482 | Excello-Mulky | Washington |
| 15 | Bpx Operating Company | 1,842 | 706 | Arkoma Basin | Latimer |
| 16 | Ovintiv USA INC | 1,701 | 649 | Woodford | Kingfisher |
| 17 | Great Horned Owls, LLC | 1,697 | 1,363 | Chautauqua Platform | Creek |
| 18 | Abundance Energy Services LLC | 1,588 | 1,557 | Arkoma Basin | Pittsburg |
| 19 | Fw Midcon I, LLC | 1,550 | 1,495 | Woodford | Kingfisher |
| 20 | Unit Petroleum Company | 1,548 | 936 | Anadarko Basin | Ellis |
| 21 | Dominion OK TX E & P | 1,515 | 490 | Anadarko Basin | Major |
| 22 | Mack Energy Company | 1,485 | 667 | Woodford | Grady |
| 23 | Latigo Oil & Gas | 1,469 | 1,172 | Anadarko Basin | Beaver |
| 24 | Eiger Operating Company, LLC | 1,419 | 1,344 | Anadarko Basin | Texas |
| 25 | Stephens & Johnson Operating Company | 1,386 | 825 | Woodford | Stephens |
| 26 | Eog Resources | 1,359 | 345 | Anadarko Basin | Texas |
| 27 | Unbridled Resources LLC | 1,310 | 1,278 | Anadarko Basin | Ellis |
| 28 | Chevron | 1,292 | 320 | Chautauqua Platform | Stephens |
| 29 | Apache | 1,289 | 384 | Anadarko Basin | Roger Mills |
| 30 | Validus Energy Ii Midcon LLC | 1,284 | 1,197 | Woodford | Canadian |
| 31 | Kaiserfrancis Oil Company | 1,245 | 639 | Anadarko Basin | Washita |
| 32 | Magnolia Petroleum Company | 1,231 | 169 | South Oklahoma Folded Belt | Stephens |
| 33 | Oxy | 1,190 | 281 | Anadarko Basin | Texas |
| 34 | Mewbourne Oil Company | 1,183 | 813 | Anadarko Basin | Ellis |
| 35 | Daylight Petroleum | 1,182 | 945 | Woodford | Garvin |
| 36 | Snr Operating LLC | 1,116 | 738 | Chautauqua Platform | Creek |
| 37 | Presidio Petroleum | 1,106 | 1,078 | Red Fork | Roger Mills |
| 38 | Trinity Operating Usg | 1,105 | 1,039 | Woodford-Caney | Pittsburg |
| 39 | Endeavor Energy Resources | 1,061 | 595 | Excello-Mulky | Nowata |
| 40 | Kodiak Oil & Gas | 1,035 | 730 | Woodford | Carter |
| 41 | Canvas Energy LLC | 1,033 | 504 | Anadarko Basin | Canadian |
| 42 | Coterra Energy INC | 1,001 | 745 | Woodford | Canadian |
| 43 | Wild Outdoors Oil | 983 | 758 | Woodford | Stephens |
| 44 | Foundation Energy Management | 955 | 874 | Anadarko Basin | Beaver |
| 45 | Le Jones Operating | 953 | 623 | Woodford | Stephens |
| 46 | Marathon Oil Company | 941 | 358 | Anadarko Basin | Oklahoma |
| 47 | Mustang Fuel | 928 | 628 | Arkoma Basin | Pittsburg |
| 48 | Pemco | 897 | 698 | Excello-Mulky | Washington |
| 49 | Circle 9 Resources | 889 | 554 | Chautauqua Platform | Seminole |
| 50 | Samson Resources Company | 887 | 351 | Anadarko Basin | Roger Mills |
| 51 | Scout Energy Management | 882 | 480 | Woodford | Carter |
| 52 | Crawley Petroleum | 835 | 531 | Anadarko Basin | Garfield |
| 53 | Shell Oil Company | 793 | 37 | Anadarko Basin | Beckham |
| 54 | New Dominion | 776 | 482 | Chautauqua Platform | Seminole |
| 55 | Breitburn Operating | 770 | 107 | Anadarko Basin | Texas |
| 56 | Spess Oil Company | 756 | 482 | Chautauqua Platform | Pawnee |
| 57 | Arkoma Resources | 739 | 639 | Woodford-Caney | Pittsburg |
| 58 | Prime Energy Company | 732 | 442 | South Oklahoma Folded Belt | Garvin |
| 59 | Burk Royalty | 711 | 569 | Anadarko Basin | Texas |
| 60 | Wildhorse Operating Company | 708 | 491 | South Oklahoma Folded Belt | Stephens |
| 61 | Linn Operating | 671 | 98 | Anadarko Basin | Carter |
| 62 | Phoenix Petrocorp | 669 | 362 | South Oklahoma Folded Belt | Carter |
| 63 | Petroleum Waste Recovery | 661 | 27 | Anadarko Basin | Texas |
| 64 | Rocky Roads Operating LLC | 657 | 354 | Excello-Mulky | Nowata |
| 65 | Territory Resources | 644 | 546 | Anadarko Basin | Caddo |
| 66 | Cantrell Energy | 635 | 467 | South Oklahoma Folded Belt | Carter |
| 67 | T Bar M Energy Resources | 632 | 335 | Chautauqua Platform | Okmulgee |
| 68 | Ew Operating OK, LLC | 630 | 622 | Arkoma Basin | Latimer |
| 69 | Twain Energy LLC | 627 | 596 | Anadarko Basin | Beaver |
| 70 | Avalanche Oil & Gas | 624 | 593 | Anadarko Basin | Roger Mills |
| 71 | Nadel And Gussman | 612 | 163 | Chautauqua Platform | Osage |
| 72 | Lewis Oil Operations | 601 | 396 | South Oklahoma Folded Belt | Carter |
| 73 | Staghorn Petroleum | 601 | 570 | Anadarko Basin | Major |
| 74 | Anadarko Petroleum | 581 | 148 | Anadarko Basin | Texas |
| 75 | Teocalli Exploration LLC | 556 | 527 | Woodford | Canadian |
| 76 | Formentera Operations LLC | 536 | 465 | Anadarko Basin | Garfield |
| 77 | Marjo Operating | 534 | 264 | Chautauqua Platform | Lincoln |
| 78 | Tag Team Resources | 530 | 409 | Woodford-Caney | Pittsburg |
| 79 | Cimarex Energy Company | 518 | 177 | South Oklahoma Folded Belt | Garvin |
| 80 | Noble Energy | 516 | 144 | South Oklahoma Folded Belt | Stephens |
| 81 | Southern Community | 515 | 216 | Anadarko Basin | Grant |
| 82 | Range Production Company | 513 | 153 | Anadarko Basin | Major |
| 83 | Atlantic Richfield Company | 504 | 37 | Anadarko Basin | Garfield |
| 84 | Bullseye Operating | 502 | 314 | Excello-Mulky | Washington |
| 85 | Comdisco Resources | 500 | 28 | Excello-Mulky | Nowata |
| 86 | Kirkpatrick Oil Company | 497 | 324 | Anadarko Basin | Major |
| 87 | Fbf Energy LLC | 493 | 382 | Anadarko Basin | Garvin |
| 88 | Qep Energy Company | 470 | 177 | Anadarko Basin | Haskell |
| 89 | Sheridan Production Company | 461 | 106 | Anadarko Basin | Pontotoc |
| 90 | Glb Exploration | 453 | 186 | Chautauqua Platform | Oklahoma |
| 91 | Stephens Production Company | 451 | 162 | Arkoma Basin | Le Flore |
| 92 | Bratco Operating Company | 449 | 207 | Excello-Mulky | Washington |
| 93 | Red Rocks Oil & Gas Operating | 449 | 309 | Woodford | Garvin |
| 94 | Ward Petroleum | 445 | 157 | Anadarko Basin | Grady |
| 95 | Krumme Oil Company LLP | 445 | 168 | Chautauqua Platform | Creek |
| 96 | M M Energy | 443 | 176 | Anadarko Basin | Garfield |
| 97 | Samedan Oil | 433 | 44 | Woodford | Carter |
| 98 | Santa Fe Operating, LLC | 432 | 417 | Woodford-Caney | Pittsburg |
| 99 | Riviera Operating | 432 | 294 | Anadarko Basin | Major |
| 100 | Resource Oil & Gas | 428 | 317 | Anadarko Basin | Texas |
Source: Buckhead Energy analysis of public oil and gas data.
Ranking: Operators ranked by total well count under their current operator-of-record. Producing-well count is wells with a first-production date on file. Drilling activity (permits, spuds, DUCs) is published only as state and county counts, never attributed to an operator.
Why it matters: Knowing who operates the most wells in Oklahoma helps mineral owners understand who they're dealing with at the lease level.
Refresh cadence: Daily. Data current as of 2026-11-01.
By wells operated, Citation Oil & Gas is the largest oil and gas operator in Oklahoma, with 9,096 wells on record per Buckhead Energy analysis of public oil and gas data. Note that "biggest" by revenue or market capitalization can rank differently — this measures operated well count.
The top 10 operators by operated well count are: Citation Oil & Gas, Chesapeake Energy, State Fund Plugging, Diversified Production LLC, Bcemach, Bcemach Iii LLC, XTO Energy, Continental Resources, Merit Energy Company, Conocophillips Company. The full top-100 ranking with well and producing-well counts is in the leaderboard below.
Citation Oil & Gas operates the most wells in Oklahoma at 9,096, per Buckhead Energy analysis of public oil and gas data.
This leaderboard ranks the top 100 operators active in Oklahoma by total well count. Many more file with the regulator; these are the largest by operated wells.
By wells operated — the count of wells under each company's current operator-of-record designation in the public oil and gas data Buckhead Energy analyzes. It is not a revenue, production-volume, or market-capitalization ranking.
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Operators ranked: 100
Total wells: 120,331
Last refresh: 2026-11-01
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