| 1 | 4G Operating LLC | Kinta, OK 74552 | Gas Operator | Aug 2025 |
| 2 | A & A Tank Truck Company | Norman, OK 73070-8969 | Oil & Gas Operator | Sep 2025 |
| 3 | Abundance Energy I LLC | Tulsa, OK 74114 | Gas Operator | Sep 2025 |
| 4 | Abundance Energy Services LLC | Tulsa, OK 74114 | Gas Operator | Sep 2025 |
| 5 | Agave Energy Inc | Stigler, OK 74462 | Oil & Gas Operator | Aug 2025 |
| 6 | Alexander Energy Corporation | Dallas, TX 75206 | Oil & Gas Operator | Apr 2015 |
| 7 | Alexander Oil Company | Loco, OK 73442-9409 | Oil & Gas Operator | Oct 2025 |
| 8 | Amax Oil & Gas Inc. | Fort Worth, TX 76107 | Oil & Gas Operator | Nov 2014 |
| 9 | An-Son Corp | Oklahoma City, OK 73124 | Oil & Gas Operator | Jan 2006 |
| 10 | Anadarko E&P Onshore LLC | Houston, TX 77046 | Oil & Gas Operator | Dec 2025 |
| 11 | Anadarko Minerals Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Sep 2025 |
| 12 | Anc Investments LLC | Enid, OK 73701-1823 | Gas Operator | Aug 2025 |
| 13 | Antara Resources, Inc. | Houston, TX 77002 | Oil & Gas Operator | Apr 2004 |
| 14 | Apache Corporation | Houston, TX 77042 | Oil & Gas Operator | Dec 2025 |
| 15 | Arkla Energy Resources | Shreveport, LA 71151 | Oil & Gas Operator | Mar 2015 |
| 16 | Arkoma Holding Corporation | Oklahoma City, OK 73102-5684 | Gas Operator | Jul 2007 |
| 17 | Arkoma Operations LLC | Tulsa, OK 74114-3502 | Oil & Gas Operator | Aug 2025 |
| 18 | Arkoma Production Company | Shreveport, LA 71101 | Gas Operator | Apr 2020 |
| 19 | Arkoma Resources LLC | Henryetta, OK 74437 | Oil & Gas Operator | Sep 2025 |
| 20 | Armstrong & McLeod Company | Okmulgee, OK 74447-0819 | Oil & Gas Operator | Dec 1993 |
| 21 | Arrow Oil & Gas, LLC | Norman, OK 73070 | Oil & Gas Operator | Dec 2025 |
| 22 | Atlantic Richfield Company | Plano, TX 75074 | Oil & Gas Operator | Dec 2016 |
| 23 | Atls Production Company LLC | Fort Worth, TX 76102-7426 | Gas Operator | Sep 2020 |
| 24 | B & W Operating, L.L.C. | Nichols Hill, OK 73116 | Oil & Gas Operator | Sep 2025 |
| 25 | B B R Oil Corporation | Norman, OK 73069 | Oil & Gas Operator | Aug 2025 |
| 26 | Bailey Oil Corp | Bartlesville, OK 74006 | Oil & Gas Operator | Jun 2025 |
| 27 | Barrett Resources Corporation | Denver, CO 80202 | Oil & Gas Operator | Aug 2003 |
| 28 | Bay Oaks Resources LLC | Fort Smith, AR 72913-3129 | Gas Operator | Feb 2018 |
| 29 | Bayou Resources Inc | Houston, TX 77056 | Oil & Gas Operator | Jan 2015 |
| 30 | Bear Productions Inc | Kinta, OK 74552 | Oil & Gas Operator | Aug 2025 |
| 31 | Belport Oil Inc | Tulsa, OK 74119 | Oil & Gas Operator | Jul 2025 |
| 32 | BHP Petroleum (Americas) Inc | Houston, TX 77056 | Oil & Gas Operator | Mar 2015 |
| 33 | BHP Petroleum Company Inc | Houston, TX 77057 | Oil & Gas Operator | Jun 2016 |
| 34 | Big Bend Oil Co | Hominy, OK 74035 | Oil & Gas Operator | Jul 2025 |
| 35 | Blackjack Oil & Gas, Inc. | Hennessey, OK 73742 | Oil & Gas Operator | Dec 2025 |
| 36 | Blackwell Gas Company | | Gas Operator | Jun 1997 |
| 37 | Blue Water Resources LLC | Tulsa, OK 74136 | Oil & Gas Operator | Sep 2025 |
| 38 | Bluebonnet Oil Corporation | Oklahoma City, OK 73162-6249 | Oil & Gas Operator | Aug 2025 |
| 39 | Bluebonnet Oil LLC | Oklahoma City, OK 73162-6249 | Oil & Gas Operator | Sep 2025 |
| 40 | Bluemark Energy, LLC | Tulsa, OK 74135 | Oil & Gas Operator | Aug 2025 |
| 41 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Aug 2025 |
| 42 | Bravo Arkoma LLC | Tulsa, OK 74103-3100 | Oil & Gas Operator | Jul 2025 |
| 43 | Breitburn Operating LP | Keithville, LA 71047 | Oil & Gas Operator | Dec 2025 |
| 44 | BRG Petroleum LLC | Tulsa, OK 74136 | Oil & Gas Operator | Sep 2025 |
| 45 | BRG Production Company | Tulsa, OK 74136-6338 | Oil & Gas Operator | Sep 2025 |
| 46 | Briar Oil & Gas - Oklahoma 1 LLC | Houston, TX 77027-9392 | Oil & Gas Operator | Sep 2025 |
| 47 | Bristol Resources Corporation | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2022 |
| 48 | Brock Oil & Gas Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2019 |
| 49 | Brooks Energy Company | Tulsa, OK 74114-3304 | Oil & Gas Operator | Jul 2008 |
| 50 | Brower Oil & Gas Co., Inc. | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 51 | Brower, Robert C. | Fort Worth, TX 76116 | Oil & Gas Operator | Dec 2025 |
| 52 | Brown B J | Tulsa, OK 74133 | Gas Operator | Jan 2007 |
| 53 | Bso Inc | Cleveland, OK 74020 | Oil & Gas Operator | Sep 2025 |
| 54 | Buffco Production, Inc. | Longview, TX 75606 | Oil & Gas Operator | Dec 2025 |
| 55 | Bulldog Operating Company LLC | Shreveport, LA 71101-3680 | Oil & Gas Operator | Jun 2015 |
| 56 | Buray Energy International LLC | Evansville, IN 47711-5369 | Gas Operator | Jun 2013 |
| 57 | Buttonwood Petroleum Inc | Tulsa, OK 74136-4234 | Oil & Gas Operator | Jan 2014 |
| 58 | Buxton Fred M | Oklahoma City, OK 73116-9111 | Oil & Gas Operator | Feb 2007 |
| 59 | C & H Oil Company | Ratliff City, OK 73481-0130 | Oil & Gas Operator | Apr 2015 |
| 60 | Cabot Petroleum Corporation | Englewood, CO 80111-2529 | Oil & Gas Operator | Dec 2004 |
| 61 | Canvas Energy LLC | Oklahoma City, OK 73142-1839 | Oil & Gas Operator | Sep 2025 |
| 62 | Carl E Gungoll Exploration Inc | Oklahoma City, OK 73154-0466 | Oil & Gas Operator | Jan 2016 |
| 63 | Carlson Petroleum Company | Houston, TX 77010 | Oil & Gas Operator | Mar 2015 |
| 64 | Charter Oak Production Co LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Dec 2025 |
| 65 | Chesapeake Operating LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Dec 2025 |
| 66 | Cheyenne Petroleum Company | Oklahoma City, OK 73134 | Oil & Gas Operator | Dec 2025 |
| 67 | Choctaw Gas Company | Quinton, OK 74561 | Gas Operator | Aug 2025 |
| 68 | Cimarron Operating Company | Oklahoma City, OK 73112-3967 | Oil & Gas Operator | May 2011 |
| 69 | Cimarron Petroleum Corporation | Houston, TX 77057-2696 | Oil & Gas Operator | Aug 2025 |
| 70 | Citation Oil & Gas Corp | Houston, TX 77269 | Oil & Gas Operator | Dec 2025 |
| 71 | CJR Operating LLC | Wister, OK 74966 | Gas Operator | Aug 2025 |
| 72 | Columbia Production Company | Edmond, OK 73083 | Oil & Gas Operator | May 2020 |
| 73 | Comstock Oil & Gas, LP | Frisco, TX 75034 | Oil & Gas Operator | Aug 2019 |
| 74 | Concho Exploration Inc | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2015 |
| 75 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | Dec 2025 |
| 76 | Consolidated Oil & Gas Inc | Wichita, KS 67202 | Oil & Gas Operator | Dec 2012 |
| 77 | Continental Gas Inc | Enid, OK 73702-5103 | Oil & Gas Operator | Apr 2012 |
| 78 | Continental Operating Co. | Houston, TX 77024 | Oil & Gas Operator | Dec 2025 |
| 79 | Continental Resources, Inc. | Oklahoma City, OK 73126 | Oil & Gas Operator | Dec 2025 |
| 80 | Cordillera Energy Partners, LLC | Greenwood VLG, CO 80111 | Oil & Gas Operator | Mar 2020 |
| 81 | Cory, Kenneth W. | Bellaire, TX 77401 | Oil & Gas Operator | Mar 2012 |
| 82 | Cox Oil & Gas Inc | Dallas, TX 75201 | Oil & Gas Operator | Mar 2014 |
| 83 | Crest Resources Inc | Tulsa, OK 74103 | Oil & Gas Operator | Dec 2025 |
| 84 | Cross Timbers Operating Company | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2025 |
| 85 | Crown Central Pet Corp | Bellaire, TX 77401 | Oil & Gas Operator | Dec 2016 |
| 86 | Cyanostar Energy Inc | Tulsa, OK 74103-4122 | Oil & Gas Operator | Feb 1999 |
| 87 | D & D Oil Company | Dayton, TX 77535 | Oil & Gas Operator | Dec 2025 |
| 88 | D & G Energy Corporation | Houston, TX 77056 | Oil & Gas Operator | Dec 1995 |
| 89 | D-Pex Operating Company | | Oil & Gas Operator | Sep 2004 |
| 90 | Dab Limited | Oklahoma City, OK 73116-9082 | Oil & Gas Operator | Aug 2013 |
| 91 | Daniel Resource Dev Inc | Tomball, TX 77375-8919 | Oil & Gas Operator | Oct 2009 |
| 92 | Daniel-Price Exploration Co | Tulsa, OK 74119 | Gas Operator | Apr 2011 |
| 93 | Daube Exploration Company | Ardmore, OK 73402 | Oil & Gas Operator | Nov 2020 |
| 94 | Davis Operating Company | Elysian Field, TX 75642 | Oil & Gas Operator | Dec 2025 |
| 95 | Davis, Joe D. | Fort Smith, AR 72903 | Gas Operator | Mar 2015 |
| 96 | Derrick Resources Inc | Henryetta, OK 74437-4249 | Oil & Gas Operator | Aug 2025 |
| 97 | Devon Energy Corp (Nevada) | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2017 |
| 98 | Dexxon Inc | Kiefer, OK 74041 | Oil & Gas Operator | Aug 2025 |
| 99 | DLKB Operating LLC | Eufaula, OK 74432 | Gas Operator | Aug 2025 |
| 100 | DMS Oil Company | Houston, TX 77042 | Oil & Gas Operator | Sep 2025 |