| 1 | A & A Tank Truck Company | Norman, OK 73070-8969 | Oil & Gas Operator | Jan 2024 |
| 2 | American Petroleum Corp | Addison, TX 75001 | Oil & Gas Operator | Apr 2024 |
| 3 | Apache Corporation | Houston, TX 77056 | Oil & Gas Operator | Apr 2024 |
| 4 | Arbuckle Enterprises, Inc. | Edmond, OK 73083 | Oil & Gas Operator | Dec 2023 |
| 5 | Aries Operating LP | Houston, TX 77042 | Oil & Gas Operator | Apr 2024 |
| 6 | Arrow Oil & Gas, LLC | Norman, OK 73070 | Oil & Gas Operator | Apr 2024 |
| 7 | Atlantic Richfield Company | Plano, TX 75094-1744 | Oil & Gas Operator | Dec 2016 |
| 8 | B & B SWD LLC | | Oil Operator | Jan 2024 |
| 9 | Bce-Mach III LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Apr 2024 |
| 10 | Bce-Mach LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Jan 2024 |
| 11 | Bettis, Boyle & Stovall | Graham, TX 76450 | Oil & Gas Operator | Apr 2024 |
| 12 | Bluebonnet Oil Corporation | Oklahoma City, OK 73162-6249 | Oil & Gas Operator | Dec 2023 |
| 13 | Bluebonnet Oil LLC | | Oil & Gas Operator | Jan 2024 |
| 14 | Bluemark Energy LLC | Tulsa, OK 74135 | Oil & Gas Operator | Dec 2023 |
| 15 | Bluff LTD (The) Partnership | Woodward, OK 73801-3160 | Oil Operator | Dec 1999 |
| 16 | Boswell Energy Corp. | Oklahoma City, OK 73114-7401 | Oil & Gas Operator | Nov 2004 |
| 17 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Dec 2023 |
| 18 | Bravo Arkoma LLC | | Oil & Gas Operator | Dec 2023 |
| 19 | Brower Oil & Gas Co., Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 2024 |
| 20 | C & L Oil And Gas Corporation | Norman, OK 73069-8224 | Oil & Gas Operator | Jan 2024 |
| 21 | Canvas Energy LLC | Oklahoma City, OK 73142-1839 | Oil & Gas Operator | Jan 2024 |
| 22 | Capstone Oilfield Disposal Service LLC | Hennessey, OK 73742-0698 | Oil Operator | Dec 2019 |
| 23 | Central Ok Reclamation LLC | | Oil & Gas Operator | Jun 2014 |
| 24 | Chizum Oil LLC | Wichita, KS 67211 | Oil & Gas Operator | Jan 2024 |
| 25 | Cimarex Energy Co. Of Colorado | Midland, TX 79706 | Oil & Gas Operator | Apr 2024 |
| 26 | Citation Oil & Gas Corp. | Houston, TX 77269 | Oil & Gas Operator | Apr 2024 |
| 27 | Combined Resources Corporation | Edmond, OK 73083 | Oil & Gas Operator | Apr 2024 |
| 28 | Continental Operating Co. | Houston, TX 77024 | Oil & Gas Operator | Apr 2024 |
| 29 | Continental Resources, Inc. | Oklahoma City, OK 73126 | Oil & Gas Operator | Apr 2024 |
| 30 | Convest Energy Corporation | Houston, TX 77057 | Oil & Gas Operator | Sep 2014 |
| 31 | D & B Operating LLC | | Oil Operator | Jan 2023 |
| 32 | Daco, Inc. | Spearman, TX 79081 | Oil & Gas Operator | Apr 2024 |
| 33 | Daniels Corporation, The | Seabrook, TX 77586 | Oil & Gas Operator | Apr 2024 |
| 34 | Daube Company The | Ardmore, OK 73402 | Oil & Gas Operator | Feb 2024 |
| 35 | Daube Exploration Company | Ardmore, OK 73402 | Oil & Gas Operator | Nov 2020 |
| 36 | Devon Energy Corp (Nevada) | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2017 |
| 37 | Devon Energy Production Company LP | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2024 |
| 38 | Dominion Ok TX E & P Inc | Oklahoma City, OK 73134 | Oil & Gas Operator | Nov 2018 |
| 39 | Dunne Equities Operating Inc | Houston, TX 77057 | Oil & Gas Operator | Aug 2022 |
| 40 | Enex Resources Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2009 |
| 41 | Fackrell & Associates LLC | Ardmore, OK 73402-1452 | Oil Operator | Dec 2023 |
| 42 | Femco SWD Inc | Enid, OK 73702-3907 | Oil Operator | Mar 2014 |
| 43 | Finley Resources Inc | Fort Worth, TX 76113 | Oil & Gas Operator | Apr 2024 |
| 44 | Geo Engineering Inc | Houston, TX 77027 | Oil & Gas Operator | Jun 2009 |
| 45 | GLB Exploration, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Jan 2024 |
| 46 | Godfrey Oil Properties | Madill, OK 73446-0183 | Oil & Gas Operator | Dec 2023 |
| 47 | Green Valley Disposal Serv LLC | Waynoka, OK 73860-0194 | Oil Operator | Dec 2023 |
| 48 | Greenhead Energy Operating LLC | | Oil & Gas Operator | Jan 2024 |
| 49 | Gulf Exploration, LLC | Oklahoma City, OK 73114 | Oil & Gas Operator | Mar 2024 |
| 50 | Gulf Production Corporation | Oklahoma City, OK 73114 | Oil & Gas Operator | Apr 2015 |
| 51 | H2ox Operating LLC | | Oil Operator | Jan 2024 |
| 52 | Hallwood Petroleum, Inc. | Midland, TX 79701 | Oil & Gas Operator | Dec 2023 |
| 53 | Ham Oil Company, LLC | | Oil Operator | Sep 2022 |
| 54 | Hamon Operating Company | Dallas, TX 75201 | Oil & Gas Operator | Dec 2011 |
| 55 | Heartlands Development Co Inc | Bristow, OK 74010-3826 | Oil & Gas Operator | May 2017 |
| 56 | High Sierra Crude Oil& Marketing LLC | Ardmore, OK 73401 | Oil Operator | Nov 2013 |
| 57 | Hondo Oil & Gas Company | Roswell, NM 88202 | Oil & Gas Operator | Aug 2006 |
| 58 | Howden Petroleum Corp | Wetumka, OK 74883 | Gas Operator | Nov 1997 |
| 59 | Hy-Carb Energy Inc | | Oil & Gas Operator | Feb 2009 |
| 60 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | Apr 2024 |
| 61 | Kybenco Disposals LLC | | Oil Operator | Sep 2022 |
| 62 | Lake Country Disposal II LLC | | Oil Operator | Jan 2024 |
| 63 | Lake Country Disposal LLC | | Oil Operator | Jan 2024 |
| 64 | Lambdin William H | Oklahoma City, OK 73120 | Oil & Gas Operator | Nov 1998 |
| 65 | Lansden Operating Co LLC | Norman, OK 73070 | Oil & Gas Operator | Dec 1997 |
| 66 | Le Norman Energy Corporation | Duncan, OK 73534 | Oil & Gas Operator | Nov 2014 |
| 67 | Likins-Foster Honolulu Corp | Foster City, CA 94404 | Oil & Gas Operator | Feb 2015 |
| 68 | LX4 LLC | | Oil Operator | Jan 2024 |
| 69 | M & S Oil Co | Lawrenceburg, IN 47025-8675-8675 | Oil & Gas Operator | Aug 2000 |
| 70 | Mac Laskey Kelly Oilfield | El Dorado, KS 67042 | Oil & Gas Operator | Jan 2024 |
| 71 | Manuel Corporation | Wichita, KS 67206 | Oil & Gas Operator | Jan 2024 |
| 72 | Marjo Operating Company Inc | Tulsa, OK 741010729 | Oil & Gas Operator | Dec 2023 |
| 73 | Mendell Petroleum Corporation | Castle Rock, CO 80104-9045 | Oil & Gas Operator | Sep 2004 |
| 74 | Mid-Con Central Expl Co | Tulsa, OK 74136 | Oil & Gas Operator | Aug 2014 |
| 75 | Moore Richard L | Morris, OK 74445 | Oil Operator | Aug 2013 |
| 76 | Mud Operations Inc | Ames, OK 73718-9501 | Oil & Gas Operator | Jan 2024 |
| 77 | Natural Gas Pipeline Co Of Am LLC | Downers Grove, IL 60515-3708 | Oil & Gas Operator | Mar 2015 |
| 78 | Nelson Exploration Corporation | | Oil & Gas Operator | Dec 2023 |
| 79 | Nemaha Environmental Services LLC | Enid, OK 73703 | Oil Operator | Dec 2023 |
| 80 | Noble Energy Inc | Midland, TX 79706 | Oil & Gas Operator | Apr 2024 |
| 81 | Noble Energy Production Inc | Houston, TX 77067 | Oil & Gas Operator | Apr 2024 |
| 82 | Oil Operations Inc | | Oil & Gas Operator | Apr 2011 |
| 83 | Oklahoma Liquid Resources Inc | Owasso, OK 74055-0841 | Oil & Gas Operator | Dec 2023 |
| 84 | Oklahoma Petroleum Allies LLC | Ardmore, OK 73401 | Oil Operator | Oct 2023 |
| 85 | Papal Enterprises Inc | Oklahoma City, OK 73154-1555 | Oil & Gas Operator | Apr 2015 |
| 86 | Paramount Petroleum Corp | Dallas, TX 75374 | Oil Operator | Dec 2000 |
| 87 | Patina Oil & Gas Corporation | Denver, CO 80202 | Oil & Gas Operator | May 2016 |
| 88 | Patina Oklahoma Corp | Duncan, OK 73533-9523 | Oil & Gas Operator | Nov 2014 |
| 89 | PBT Enterprises Inc | Garber, OK 73738-0262 | Oil & Gas Operator | May 2023 |
| 90 | Petro Oilfield Equipment Inc | Drumright, OK 74030-1233 | Oil & Gas Operator | Dec 2010 |
| 91 | Petroleum Exploration Company LTD LP | | Oil & Gas Operator | Jan 2024 |
| 92 | Petroleum Properties MGMT. Co. | Oklahoma City, OK 73118 | Oil & Gas Operator | Dec 2014 |
| 93 | Powerline Energy Corporation | Arlington, TX 76015 | Oil & Gas Operator | Apr 2024 |
| 94 | Proven Reserves Management, Inc. | Dallas, TX 75370 | Oil & Gas Operator | Jan 2024 |
| 95 | R C Taylor Operating Company LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Jan 2024 |
| 96 | Red Hawk Disposal LLC | | Oil Operator | Jun 2023 |
| 97 | Reid Williams Operating Inc | Shreveport, LA 71106-6223 | Oil & Gas Operator | Dec 2023 |
| 98 | Royal Oaks Petroleum Corp | Fort Worth, TX 76116 | Oil & Gas Operator | Dec 2001 |
| 99 | Royalty Energy Development LLC | Edmond, OK 73083 | Oil & Gas Operator | Jan 2024 |
| 100 | Salty Dog Disposal LLC | | Oil Operator | Feb 2024 |