| 1 | 580 Productions LLC | | Oil Operator | Feb 2024 |
| 2 | A & A Tank Truck Company | Norman, OK 73070-8969 | Oil & Gas Operator | Feb 2024 |
| 3 | Abercrombie, A. L., Inc | Wichita, KS 67202 | Oil & Gas Operator | Dec 2023 |
| 4 | Abng Inc | Chickasha, OK 73023-0926 | Oil & Gas Operator | Feb 2017 |
| 5 | Aker Oil & Gas Company | Tulsa, OK 74105-2216 | Oil & Gas Operator | Aug 2013 |
| 6 | Allied Petroleum Inc. | Oklahoma City, OK 73116-1516 | Oil & Gas Operator | Jun 2014 |
| 7 | Almont Energy LLC | | Oil & Gas Operator | Oct 2021 |
| 8 | American Petroleum Corp | Addison, TX 75001 | Oil & Gas Operator | Apr 2024 |
| 9 | Ancova Energy Marketing LLC | | Oil & Gas Operator | Jan 2024 |
| 10 | Anson Company | Oklahoma City, OK 73124 | Oil & Gas Operator | Apr 2018 |
| 11 | Apache Corporation | Houston, TX 77056 | Oil & Gas Operator | Apr 2024 |
| 12 | Apache Energy Resources Corp | Houston, TX 77056 | Oil & Gas Operator | Mar 2015 |
| 13 | Apexco, Inc. | Sand Springs, OK 74063 | Oil & Gas Operator | Dec 2023 |
| 14 | Arbuckle Enterprises, Inc. | Edmond, OK 73083 | Oil & Gas Operator | Jan 2024 |
| 15 | Arrow Oil & Gas, LLC | Norman, OK 73070 | Oil & Gas Operator | Apr 2024 |
| 16 | Auora Natural Gas & Assoc Prod | Dallas, TX 75205 | Oil & Gas Operator | Dec 2000 |
| 17 | Avalon Exploration Inc | Tulsa, OK 74119-5401 | Oil & Gas Operator | Dec 2019 |
| 18 | Aven Gas & Oil Inc | Oklahoma City, OK 73113-0491 | Oil & Gas Operator | Nov 2021 |
| 19 | B & B SWD LLC | | Oil Operator | Feb 2024 |
| 20 | B & B Tool Company Inc | Lindsay, OK 73052-0729 | Oil & Gas Operator | Jan 2024 |
| 21 | B & W Operating LLC | Oklahoma City, OK 73116 | Oil & Gas Operator | Feb 2024 |
| 22 | Bce-Mach II LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Apr 2024 |
| 23 | Bce-Mach LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Feb 2024 |
| 24 | Beard Oil Company | Oklahoma City, OK 73102 | Oil & Gas Operator | Aug 2013 |
| 25 | Bison Exploration Drilling 1 LP | Dallas, TX 75205-3483 | Oil & Gas Operator | Nov 2015 |
| 26 | Blue Bison Operating LLC | | Oil & Gas Operator | Jan 2024 |
| 27 | Bluemark Energy LLC | Tulsa, OK 74135 | Oil & Gas Operator | Jan 2024 |
| 28 | Bluff LTD (The) Partnership | Woodward, OK 73801-3160 | Oil Operator | Dec 1999 |
| 29 | Bomber Energy LLC | | Oil & Gas Operator | Feb 2024 |
| 30 | Bostex Operating Company | Nocona, TX 76255-0007 | Oil Operator | Jan 2024 |
| 31 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Jan 2024 |
| 32 | Brammer Petroleum, Inc. | Gainesville, TX 76241 | Oil & Gas Operator | Apr 2024 |
| 33 | Breck Operating Corp. | Breckenridge, TX 76424 | Oil & Gas Operator | Jan 2024 |
| 34 | Brenneis Energy | Duncan, OK 73533-5415 | Oil & Gas Operator | Feb 2024 |
| 35 | Brenneis Oil Company | Norman, OK 73072-3963 | Oil & Gas Operator | Aug 2012 |
| 36 | Brown L C Company | Ada, OK 74820-7916 | Oil & Gas Operator | Nov 2021 |
| 37 | Bruce Weldon | Lawton, OK 73501-5707 | Oil & Gas Operator | Mar 2000 |
| 38 | Bud Oil, Inc. | Duncan, OK 73534 | Oil & Gas Operator | Apr 2024 |
| 39 | C & L Oil And Gas Corporation | Norman, OK 73069-8224 | Oil & Gas Operator | Feb 2024 |
| 40 | C & R Petroleum Co. | Duncan, OK 73533-1341 | Oil & Gas Operator | Feb 2024 |
| 41 | C.D. Operating Company, Inc. | Oklahoma City, OK 73116 | Oil & Gas Operator | Apr 2015 |
| 42 | Canaan Energy Corporation | Oklahoma City, OK 73154-8806 | Oil & Gas Operator | Mar 2015 |
| 43 | Canvas Energy LLC | Oklahoma City, OK 73142-1839 | Oil & Gas Operator | Mar 2024 |
| 44 | Capstone Oilfield Disposal Service LLC | Hennessey, OK 73742-0698 | Oil Operator | Dec 2019 |
| 45 | Carlson Petroleum Company | Houston, TX 77010 | Oil & Gas Operator | Mar 2015 |
| 46 | Cemoil Inc | Cement, OK 73017-0563 | Oil & Gas Operator | Feb 2024 |
| 47 | Central Ok Reclamation LLC | | Oil & Gas Operator | Jun 2014 |
| 48 | Chaco Energy Company | Denver, CO 80201 | Oil & Gas Operator | Feb 2024 |
| 49 | Chesapeake Operating, LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Apr 2024 |
| 50 | Cheyenne Petroleum Company | Oklahoma City, OK 73134 | Oil & Gas Operator | Apr 2024 |
| 51 | Cibola Energy Corp | Albuquerque, NM 87103 | Oil & Gas Operator | Oct 2017 |
| 52 | Cimarron Operating Company | Oklahoma City, OK 73112-3967 | Oil & Gas Operator | May 2011 |
| 53 | Clark And Clark | Princeton, NJ 08540-1930 | Oil & Gas Operator | Jul 2013 |
| 54 | Clift Cary E | Chickasha, OK 73018-6305 | Oil & Gas Operator | Feb 2023 |
| 55 | Coho Oil & Gas Inc | Coppell, TX 75019-8288 | Oil & Gas Operator | Mar 2015 |
| 56 | Columbia Production Company | Edmond, OK 73083 | Oil & Gas Operator | May 2020 |
| 57 | Comanche Exploration Co LLC | Oklahoma City, OK 73116-7334 | Oil & Gas Operator | Feb 2024 |
| 58 | Comanche Exploration Company | Oklahoma City, OK 73120-2797 | Oil & Gas Operator | Feb 2007 |
| 59 | Combined Resources Corporation | Edmond, OK 73083 | Oil & Gas Operator | Apr 2024 |
| 60 | Comet Oil Company | Velma, OK 73091 | Oil & Gas Operator | May 2005 |
| 61 | Comet-Haines Oil Company | Sulphur, OK 73086-0546 | Oil & Gas Operator | Mar 2013 |
| 62 | Compadre Drilling & Expl Corp | Ardmore, OK 73402 | Oil & Gas Operator | Mar 2015 |
| 63 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | Apr 2024 |
| 64 | Continental Resources, Inc. | Oklahoma City, OK 73126 | Oil & Gas Operator | Apr 2024 |
| 65 | Convest Energy Corporation | Houston, TX 77057 | Oil & Gas Operator | Sep 2014 |
| 66 | Cook W R Inc | Duncan, OK 73534-0069 | Oil & Gas Operator | Jun 2000 |
| 67 | Couch Donald W | Marlow, OK 73055-5252 | Oil & Gas Operator | Feb 2024 |
| 68 | Crawley Petroleum Corporation | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2024 |
| 69 | Crown Petroleum Company | Duncan, OK 73534-0938 | Oil & Gas Operator | Jan 2011 |
| 70 | Crude Marketing & Trans Inc | Tulsa, OK 74159 | Oil & Gas Operator | Sep 2017 |
| 71 | Crumpton H A | Duncan, OK 73533 | Oil Operator | Dec 2002 |
| 72 | D & B Operating LLC | | Oil Operator | Jan 2023 |
| 73 | D & D Drilling | Kingston, OK 73439-9549 | Oil & Gas Operator | May 2000 |
| 74 | Daco, Inc. | Spearman, TX 79081 | Oil & Gas Operator | Apr 2024 |
| 75 | Daniel Resource Dev Inc | Tomball, TX 77375-8919 | Oil & Gas Operator | Oct 2009 |
| 76 | Daube Company The | Ardmore, OK 73402 | Oil & Gas Operator | Feb 2024 |
| 77 | Daylight Petroleum LLC | Houston, TX 77052 | Oil & Gas Operator | Apr 2024 |
| 78 | DCP Operating Co LP | Houston, TX 77042 | Oil & Gas Operator | Jan 2024 |
| 79 | Devon Energy Corp (Nevada) | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2017 |
| 80 | Devon Energy Production Company LP | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2024 |
| 81 | Dominion Exp Midcontinent Inc | Oklahoma City, OK 73134-2616 | Oil & Gas Operator | Feb 2024 |
| 82 | Dominion Ok TX E & P Inc | Oklahoma City, OK 73134 | Oil & Gas Operator | Nov 2018 |
| 83 | Dorchester Resources LP | Oklahoma City, OK 73154 | Oil & Gas Operator | Aug 2021 |
| 84 | Duncan Petroleum Corp | Velma, OK 73091 | Oil & Gas Operator | Oct 1991 |
| 85 | Dyco Petroleum Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Mar 2015 |
| 86 | E4 Production LLC | | Oil Operator | Feb 2024 |
| 87 | Edinger Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Jun 2007 |
| 88 | El Pache Energy Inc | Duncan, OK 73534-0847 | Oil & Gas Operator | Aug 2017 |
| 89 | El Paso Production Company | Houston, TX 77002 | Oil & Gas Operator | Mar 2016 |
| 90 | Elgin Construction Company Inc | Elgin, OK 73538-0370 | Oil Operator | Jan 2024 |
| 91 | Energas Corporation | Oklahoma City, OK 73105-6422 | Oil & Gas Operator | Jan 2024 |
| 92 | Energy Operating Corporation | Plano, TX 75093-4409 | Oil & Gas Operator | Sep 2013 |
| 93 | Enervest Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2024 |
| 94 | Enerwest Trading Co LLC | Duncan, OK 73534 | Oil & Gas Operator | Jan 2024 |
| 95 | EOG Resources Inc | Midland, TX 79702 | Oil & Gas Operator | Apr 2024 |
| 96 | Excelco Energy Inc. | Kingwood, TX 77339 | Oil & Gas Operator | Jul 2018 |
| 97 | Exok, Inc | Oklahoma City, OK 73116 | Oil & Gas Operator | Jan 2024 |
| 98 | Exxonmobil Oil Corp | Houston, TX 77210 | Oil & Gas Operator | Mar 2024 |
| 99 | Fairway Resources Operating III LLC | | Oil & Gas Operator | Jan 2024 |
| 100 | Faulconer Vernon E Inc | Tyler, TX 75711 | Oil & Gas Operator | Feb 2024 |