| 1 | 007 Operating LLC | Sulphur, OK 73086 | Oil & Gas Operator | Jun 2025 |
| 2 | 7C Land & Minerals Co | Ada, OK 74820 | Oil & Gas Operator | Jun 2025 |
| 3 | A & A Tank Truck Company | Norman, OK 73070-8969 | Oil & Gas Operator | Jul 2025 |
| 4 | Aaron Arnold B | Sulphur, OK 73086-6853 | Oil & Gas Operator | May 2004 |
| 5 | Abarr Trust (The) | Oklahoma City, OK 73179 | Oil & Gas Operator | Jul 2025 |
| 6 | Action Petroleum Service Corp | Ardmore, OK 73401 | Oil Operator | Apr 2025 |
| 7 | Adams Resources Expl. Corp. | Houston, TX 77001 | Oil & Gas Operator | Apr 2020 |
| 8 | Aexco Petroleum Inc | Denver, CO 80202 | Oil & Gas Operator | Jul 2025 |
| 9 | Aggie Oil Company | Lakewood, CO 80226 | Oil & Gas Operator | May 2001 |
| 10 | Alexander Energy Corporation | Dallas, TX 75206 | Oil & Gas Operator | Apr 2015 |
| 11 | Allen Oil & Gas LLC | Ardmore, OK 73401 | Oil Operator | Aug 2022 |
| 12 | Alpine Inc | Oklahoma City, OK 73134-2504 | Oil & Gas Operator | Feb 2024 |
| 13 | Altman Energy, Inc. | Tulsa, OK 74114 | Oil & Gas Operator | Oct 2025 |
| 14 | Amax Oil & Gas Inc | Fort Worth, TX 76107 | Oil & Gas Operator | Nov 2014 |
| 15 | Ambrit Energy Corporation | Garland, TX 75044 | Oil & Gas Operator | Jun 2003 |
| 16 | Amerac Energy Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Jun 2013 |
| 17 | American Natural Resources LLC | Tulsa, OK 74145-1117 | Oil & Gas Operator | May 2020 |
| 18 | American Petroleum Corp | Addison, TX 75001 | Oil & Gas Operator | Oct 2025 |
| 19 | Americo Oil Company | Oklahoma City, OK 73154 | Oil & Gas Operator | Feb 2012 |
| 20 | Anadarko Minerals Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Jul 2025 |
| 21 | Anadarko Petroleum Corporation | Houston, TX 77251 | Oil & Gas Operator | Jul 2025 |
| 22 | Anson Company | Oklahoma City, OK 73124 | Oil & Gas Operator | Apr 2018 |
| 23 | Antioch Disposal Well Inc | Duncan, OK 73533 | Oil Operator | Jan 1994 |
| 24 | Aog Operating LLC | Oklahoma City, OK 73120 | Oil & Gas Operator | Jun 2025 |
| 25 | Ardmore Production & Exploration Co | Ardmore, OK 73401 | Oil & Gas Operator | Jun 2025 |
| 26 | Argent Energy (Us) Holdings Inc | Sugar Land, TX 77479 | Oil & Gas Operator | Sep 2021 |
| 27 | Aries Operating LP | Houston, TX 77042 | Oil & Gas Operator | Oct 2025 |
| 28 | Arkoma Operations LLC | Tulsa, OK 74114-3502 | Oil & Gas Operator | Jun 2025 |
| 29 | Armor Energy II LLC | Tulsa, OK 74145 | Oil & Gas Operator | Jul 2025 |
| 30 | Arrow Energy, Incorporated | Houston, TX 77008 | Oil & Gas Operator | Jun 2025 |
| 31 | Arrow Oil & Gas, LLC | Norman, OK 73070 | Oil & Gas Operator | Oct 2025 |
| 32 | Arrow Operating Company | Dallas, TX 75231 | Oil & Gas Operator | Jun 2025 |
| 33 | Arrowhead Energy Inc | Edmond, OK 73013 | Oil & Gas Operator | Jun 2025 |
| 34 | Arvine Pipe & Supply Co Inc | Norman, OK 73069-8224 | Oil & Gas Operator | Jul 2015 |
| 35 | Atchley Resources, Inc. | Oklahoma City, OK 73134 | Oil & Gas Operator | Jul 2025 |
| 36 | Atlantic Richfield Company | Plano, TX 75074 | Oil & Gas Operator | Dec 2016 |
| 37 | Avalanche Oil & Gas LLC | Kingfisher, OK 73750 | Oil & Gas Operator | Oct 2025 |
| 38 | Avalon Exploration Inc | Tulsa, OK 74119-5401 | Oil & Gas Operator | Dec 2019 |
| 39 | Aven Gas & Oil Inc | Oklahoma City, OK 73113-0491 | Oil & Gas Operator | Nov 2021 |
| 40 | B & B Tool Company Inc | Lindsay, OK 73052 | Oil & Gas Operator | Jun 2025 |
| 41 | B & S Oil Company | Kermit, TX 79745 | Oil & Gas Operator | Jun 2025 |
| 42 | B B R Oil Corporation | Norman, OK 73069 | Oil & Gas Operator | Jun 2025 |
| 43 | B H & T Oil Company Inc | Purcell, OK 73080-3010 | Oil & Gas Operator | Dec 2000 |
| 44 | B R Polk Inc | Oklahoma City, OK 73118 | Oil & Gas Operator | Jun 2025 |
| 45 | Banner Oil & Gas LLC | Oklahoma City, OK 73159 | Oil & Gas Operator | Jun 2025 |
| 46 | Barbour Energy Corporation | Oklahoma City, OK 73113 | Oil & Gas Operator | Oct 2025 |
| 47 | Barby Energy Corporation | Woodward, OK 73802-1660 | Oil & Gas Operator | Jun 2025 |
| 48 | Bargo Petroleum Corporation | Houston, TX 77002 | Oil & Gas Operator | Sep 2014 |
| 49 | Baseline Operating, LLC | Edmond, OK 73013-0000 | Oil & Gas Operator | Jul 2025 |
| 50 | Basin Operating Services LLC | Oklahoma City, OK 73106-5615 | Oil & Gas Operator | Jun 2025 |
| 51 | Bateman'S Bay Exploration, Inc. | Oklahoma City, OK 73156 | Oil & Gas Operator | Jun 2025 |
| 52 | Bays Exploration Inc | Oklahoma City, OK 73116-9004 | Oil & Gas Operator | Jun 2025 |
| 53 | Bce-Mach II LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Oct 2025 |
| 54 | Bce-Mach III LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Oct 2025 |
| 55 | Bce-Mach LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Aug 2025 |
| 56 | Beasley Oil Company | Oklahoma City, OK 73120 | Oil & Gas Operator | Jun 2020 |
| 57 | Beck Pump & Supply Inc | Hennessey, OK 73742-0175 | Oil & Gas Operator | Nov 2019 |
| 58 | Beck Resources Incorporated | Hennessey, OK 73742 | Oil & Gas Operator | Jun 2025 |
| 59 | Belco Energy Corp. | Dallas, TX 75231 | Oil & Gas Operator | Mar 2015 |
| 60 | Beren Corporation | Wichita, KS 67206 | Oil & Gas Operator | Oct 2025 |
| 61 | Berexco LLC | Wichita, KS 67206 | Oil & Gas Operator | Oct 2025 |
| 62 | Bergen Floyd | Norman, OK 73072 | Oil & Gas Operator | Mar 2015 |
| 63 | Beta Operating Company, LLC | Houston, TX 77210 | Oil & Gas Operator | Apr 2020 |
| 64 | Bettis, Boyle & Stovall | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 65 | BHP Petroleum (Americas) Inc | Houston, TX 77056 | Oil & Gas Operator | Mar 2015 |
| 66 | Big Four Petroleum Company | Cushing, OK 74023 | Oil & Gas Operator | Nov 2004 |
| 67 | Big Horn Oil Co., Inc. | Great Bend, KS 67530 | Oil & Gas Operator | May 2013 |
| 68 | Billy Jack Sharber Operating LLC | Seminole, OK 74868 | Oil & Gas Operator | Jun 2025 |
| 69 | Billy Matthews Production LLC | Dover, OK 73734 | Oil & Gas Operator | Jul 2025 |
| 70 | Bird Oil & Gas Inc | Yukon, OK 73099-2827 | Oil & Gas Operator | Jan 2023 |
| 71 | BKR Operating LLC | Ripley, OK 74062-6524 | Oil & Gas Operator | Apr 2025 |
| 72 | Black Gold Oil Company | Duncan, OK 73533-1581 | Oil & Gas Operator | Aug 2025 |
| 73 | Black Mesa Energy LLC | Tulsa, OK 74103-4334 | Oil & Gas Operator | Jun 2025 |
| 74 | Blackcat Oil Company | Glencoe, OK 74032 | Oil & Gas Operator | Jul 2025 |
| 75 | Blackhawk Oil Co | Ottawa, KS 66067 | Oil & Gas Operator | Jan 2011 |
| 76 | Blair Oil Company | Kingfisher, OK 73750-1213 | Oil & Gas Operator | Jun 2025 |
| 77 | Blue Cedar Energy LLC | Edmond, OK 73013 | Oil & Gas Operator | Jul 2025 |
| 78 | Blue Dolphin Production LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Jul 2025 |
| 79 | Blue Star Energy, Inc. | Shawnee, OK 74802 | Oil & Gas Operator | Oct 2025 |
| 80 | Bluemark Energy, LLC | Tulsa, OK 74135 | Oil & Gas Operator | Jun 2025 |
| 81 | Bo-MC Operating Corporation | Enid, OK 73702-1765 | Oil & Gas Operator | Mar 2018 |
| 82 | Bo-MC Resources Corporation | Enid, OK 73702-1765 | Oil & Gas Operator | Apr 2005 |
| 83 | Bogo Energy Corporation | Oklahoma City, OK 73134-1002 | Oil & Gas Operator | Jul 2025 |
| 84 | Bolin C W | Wichita Falls, TX 76301-3354 | Oil & Gas Operator | May 1995 |
| 85 | Boone Operating LLC | Oklahoma City, OK 73118-6014 | Oil & Gas Operator | May 2025 |
| 86 | Borrowed Resources LLC | Edmond, OK 73025 | Oil & Gas Operator | Jun 2025 |
| 87 | Boswell Energy Corp. | Oklahoma City, OK 73114-7401 | Oil & Gas Operator | Nov 2004 |
| 88 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Jun 2025 |
| 89 | BP Explorationinc/Ofb See #17756 | | Oil & Gas Operator | Apr 2015 |
| 90 | Brandenburg R P | Oklahoma City, OK 73139 | Oil & Gas Operator | Jun 2006 |
| 91 | Bravo Natural Resources, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Jun 2009 |
| 92 | Brazos Petroleum, Inc. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 93 | Brent Baker Oil And Gas Inc | Oklahoma City, OK 73149-2932 | Oil & Gas Operator | Jul 2025 |
| 94 | Brewer Carroll L | Edmond, OK 73003-0010 | Oil & Gas Operator | Jun 2025 |
| 95 | BRG Petroleum LLC | Tulsa, OK 74136 | Oil & Gas Operator | Jul 2025 |
| 96 | Bricar Inc | Oklahoma City, OK 73108 | Oil & Gas Operator | Nov 1998 |
| 97 | Bricktown Energy LLC | Oklahoma City, OK 73112-5468 | Oil & Gas Operator | Jun 2025 |
| 98 | Bristol Resources Corporation | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2022 |
| 99 | Brocon Inc | Healdton, OK 73438 | Oil & Gas Operator | May 2020 |
| 100 | Brower Oil & Gas Co., Inc. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |