| 1 | 101 Energy Corporation | Oklahoma City, OK 73102-4803 | Oil & Gas Operator | Dec 2023 |
| 2 | 306 Oil Investment Co Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2005 |
| 3 | A & A Tank Truck Company | Norman, OK 73070-8969 | Oil & Gas Operator | Jan 2024 |
| 4 | Abarr Trust (The) | Oklahoma City, OK 73123-0084 | Oil & Gas Operator | Jan 2024 |
| 5 | Abraxas Petroleum Corporation | San Antonio, TX 78259 | Oil & Gas Operator | Apr 2024 |
| 6 | Ac Oil & Gas LLC | | Oil & Gas Operator | Jan 2024 |
| 7 | Ackley Earl H & Glenora Trust | Cushing, OK 74023-5230 | Oil & Gas Operator | Mar 2015 |
| 8 | Adams Res & Energy Co | Houston, TX 77001-0844 | Oil & Gas Operator | Mar 2015 |
| 9 | Adobe Oil Company | | Oil & Gas Operator | Mar 2015 |
| 10 | Aei Production Company | Edmond, OK 73083 | Oil & Gas Operator | Mar 2014 |
| 11 | Aexco Petroleum Inc | Denver, CO 80202 | Oil & Gas Operator | Jan 2024 |
| 12 | Aguila Operating Company LLC | | Oil & Gas Operator | Jan 2024 |
| 13 | Alameda Corporation | Houston, TX 77002 | Oil & Gas Operator | Oct 1994 |
| 14 | Alexander Energy Corporation | Dallas, TX 75206 | Oil & Gas Operator | Apr 2015 |
| 15 | Alexander Oil Company | Loco, OK 73442-9409 | Oil & Gas Operator | Dec 2023 |
| 16 | Allied Petroleum Inc. | Oklahoma City, OK 73116-1516 | Oil & Gas Operator | Jun 2014 |
| 17 | Almont Energy LLC | | Oil & Gas Operator | Oct 2021 |
| 18 | Amax Oil & Gas Inc | Fort Worth, TX 76107 | Oil & Gas Operator | Nov 2014 |
| 19 | Amcole Energy Corporation | Dallas, TX 75231 | Oil & Gas Operator | Aug 2000 |
| 20 | Amerac Energy Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Jun 2013 |
| 21 | American Natural Energy Corp | Oklahoma City, OK 73114 | Oil & Gas Operator | May 2023 |
| 22 | American Petroleum Corp | Addison, TX 75001 | Oil & Gas Operator | Apr 2024 |
| 23 | American Star Energy & Mineral Corp | Amarillo, TX 79102-2283 | Oil & Gas Operator | Jun 2015 |
| 24 | Americana Energy Inc | Byng, OK 74820-1527 | Oil & Gas Operator | Dec 2023 |
| 25 | Amoco Energy Trading Corp | Chicago, IL 60601 | Oil & Gas Operator | Apr 2021 |
| 26 | Amsler Jerry & Denese | Enid, OK 73703-9300 | Oil & Gas Operator | Jul 2020 |
| 27 | An-Son Corporation | Oklahoma City, OK 73124-0060 | Oil & Gas Operator | Jan 2006 |
| 28 | Anadarko E&P Onshore LLC | Houston, TX 77046 | Oil & Gas Operator | Apr 2024 |
| 29 | Anadarko Minerals Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Jan 2024 |
| 30 | Anadarko Petroleum Corporation | Houston, TX 77251 | Oil & Gas Operator | Jan 2024 |
| 31 | Ancova Energy Marketing LLC | | Oil & Gas Operator | Dec 2023 |
| 32 | Anderson Mary L | | Oil & Gas Operator | Nov 1998 |
| 33 | Anderson Oil & Gas Account | Wichita Falls, TX 76301 | Oil & Gas Operator | Nov 2013 |
| 34 | Andrea Operating Company | Edmond, OK 73013-6627 | Oil & Gas Operator | Jan 2024 |
| 35 | Anson Company | Oklahoma City, OK 73124 | Oil & Gas Operator | Apr 2018 |
| 36 | Apache Corporation | Houston, TX 77056 | Oil & Gas Operator | Apr 2024 |
| 37 | Apache PHN North America, Inc. | | Oil & Gas Operator | Mar 2005 |
| 38 | Apc Operating Partnership LP | Tulsa, OK 74136-4224 | Oil & Gas Operator | Jun 2015 |
| 39 | Apexco, Inc. | Sand Springs, OK 74063 | Oil & Gas Operator | Dec 2023 |
| 40 | Arapaho Petroleum Inc | Englewood, CO 80155 | Oil & Gas Operator | Nov 1998 |
| 41 | Arbuckle Enterprises, Inc. | Edmond, OK 73083 | Oil & Gas Operator | Dec 2023 |
| 42 | Aries Operating LP | Houston, TX 77042 | Oil & Gas Operator | Apr 2024 |
| 43 | Arkoma Resources LLC | Henryetta, OK 74437 | Oil & Gas Operator | Dec 2023 |
| 44 | Arm Energy Management LLC | Houston, TX 77070 | Oil Operator | Mar 2015 |
| 45 | Arpel, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2014 |
| 46 | Arrow Oil & Gas, LLC | Norman, OK 73070 | Oil & Gas Operator | Apr 2024 |
| 47 | Arvine Pipe & Supply Co Inc | Norman, OK 73069-8224 | Oil & Gas Operator | Jul 2015 |
| 48 | Ashland Exploration Inc | Houston, TX 77218 | Oil & Gas Operator | Nov 2000 |
| 49 | Aspen Energy Group, Inc. | Santa Ynez, CA 93460 | Oil & Gas Operator | Mar 2015 |
| 50 | Associated Trans & Trading Co | Oklahoma City, OK 73102 | Oil & Gas Operator | Jan 1998 |
| 51 | Atchley Resources Inc | Oklahoma City, OK 73134 | Oil & Gas Operator | Jan 2024 |
| 52 | Atlantic Richfield Company | Plano, TX 75094-1744 | Oil & Gas Operator | Dec 2016 |
| 53 | Atteberry Engineering | Edmond, OK 73013-6624 | Oil & Gas Operator | Mar 2008 |
| 54 | Auora Natural Gas & Assoc Prod | Dallas, TX 75205 | Oil & Gas Operator | Dec 2000 |
| 55 | Austin Production Company, Inc. | Dallas, TX 75219 | Oil & Gas Operator | Mar 2015 |
| 56 | Avalanche Oil & Gas LLC | Kingfisher, OK 73750 | Oil & Gas Operator | Apr 2024 |
| 57 | Avalon Exploration Inc | Tulsa, OK 74119-5401 | Oil & Gas Operator | Dec 2019 |
| 58 | B & B SWD LLC | | Oil Operator | Jan 2024 |
| 59 | B & H Oil Co. | Oklahoma City, OK 73108 | Oil & Gas Operator | Jan 2024 |
| 60 | B And G Production, Inc. | Woodward, OK 73801 | Oil & Gas Operator | Apr 2024 |
| 61 | B B & B Oil Co | Tulsa, OK 74114 | Oil & Gas Operator | Mar 2014 |
| 62 | B M Energy, Inc. | Hennessey, OK 73742 | Oil & Gas Operator | Nov 2021 |
| 63 | Bailey Oil Co., Inc. | Neodesha, KS 66757 | Oil & Gas Operator | Jan 2024 |
| 64 | Bale Corporation (The) | Edmond, OK 73083-6863 | Oil & Gas Operator | Dec 2019 |
| 65 | Bale, Charles R. | Oklahoma City, OK 73116 | Oil & Gas Operator | Dec 2014 |
| 66 | Barrett Drilling Company | Shawnee, OK 74802-1345 | Oil & Gas Operator | Jun 2013 |
| 67 | Basin Operating Services LLC | | Oil & Gas Operator | Dec 2023 |
| 68 | Bce-Mach II LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Apr 2024 |
| 69 | Bce-Mach III LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Apr 2024 |
| 70 | Bce-Mach LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Jan 2024 |
| 71 | BDB LLC | Stillwater, OK 74076-0217 | Oil & Gas Operator | Dec 2017 |
| 72 | Be Anadarko LLC | | Oil & Gas Operator | Jan 2024 |
| 73 | Beard Oil Company | Oklahoma City, OK 73102 | Oil & Gas Operator | Aug 2013 |
| 74 | Beasley Oil Company | Oklahoma City, OK 73120 | Oil & Gas Operator | Jun 2020 |
| 75 | Beck Pump & Supply Inc | Hennessey, OK 73742-0175 | Oil & Gas Operator | Nov 2019 |
| 76 | Beck Resources Incorporated | Hennessey, OK 73742 | Oil & Gas Operator | Dec 2023 |
| 77 | Bee Cee Inc | Denton, TX 76206-0689 | Oil & Gas Operator | May 2013 |
| 78 | Belco Energy Corp. | Dallas, TX 75231 | Oil & Gas Operator | Mar 2015 |
| 79 | Bell & Kinley Company LLC | Piedmont, OK 73078-8918 | Oil & Gas Operator | Jul 2021 |
| 80 | Belport Oil, Inc. | Tulsa, OK 74119 | Oil & Gas Operator | Jan 2024 |
| 81 | Bentley & Laing | Wichita Falls, TX 76302 | Oil & Gas Operator | Feb 2002 |
| 82 | Beta Oil Company Inc | Oklahoma City, OK 73157-2958 | Oil & Gas Operator | Dec 2022 |
| 83 | Beta Operating Company LLC | Houston, TX 77210 | Oil & Gas Operator | Apr 2020 |
| 84 | BHP Petroleum (Americas) Inc | Houston, TX 77056 | Oil & Gas Operator | Mar 2015 |
| 85 | BHP Petroleum Company Inc | Houston, TX 77057 | Oil & Gas Operator | Jun 2016 |
| 86 | Big Creek Energy LLC | Kingfisher, OK 73750-3102 | Oil & Gas Operator | Jan 2024 |
| 87 | Billy Matthews Production LLC | Dover, OK 73734-0340 | Oil & Gas Operator | Dec 2023 |
| 88 | Bird Oil & Gas Inc | Yukon, OK 73099-2827 | Oil & Gas Operator | Jan 2023 |
| 89 | Bison Energy Corporation | Wichita, KS 67206 | Oil & Gas Operator | Feb 2023 |
| 90 | Blackhawk Oil Co | Ottawa, KS 66067 | Oil & Gas Operator | Jan 2011 |
| 91 | Blackjack Oil & Gas, Inc. | Hennessey, OK 73742 | Oil & Gas Operator | Apr 2024 |
| 92 | Blackjack Supply Company | Edmond, OK 73013-1144 | Oil & Gas Operator | May 2012 |
| 93 | Blaik Oil Company | Oklahoma City, OK 73118 | Oil & Gas Operator | Feb 2009 |
| 94 | Blair Oil Company | Kingfisher, OK 73750-1213 | Oil & Gas Operator | Jan 2024 |
| 95 | Blake Production Company, Inc. | Oklahoma City, OK 73118 | Oil & Gas Operator | Apr 2024 |
| 96 | BLB Inc | Kingfisher, OK 73750-1283 | Oil & Gas Operator | Jan 2024 |
| 97 | Blubaugh Ronald D | Tonkawa, OK 74653-0066 | Oil & Gas Operator | Sep 2014 |
| 98 | Blue Cedar Energy LLC | | Oil & Gas Operator | Jan 2024 |
| 99 | Blue Dolphin Production LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Jan 2024 |
| 100 | Bluegrass Energy Inc | Houston, TX 77057 | Oil & Gas Operator | Jan 2024 |