| 1 | 306 Oil Investment Co Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2005 |
| 2 | A & A Tank Truck Company | Norman, OK 73070-8969 | Oil & Gas Operator | Jan 2024 |
| 3 | A H & L Operating Company Inc | Norman, OK 73070-4084 | Oil & Gas Operator | Apr 2015 |
| 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 | Aei Production Company | Edmond, OK 73083 | Oil & Gas Operator | Mar 2014 |
| 7 | Aexco Petroleum Inc | Denver, CO 80202 | Oil & Gas Operator | Jan 2024 |
| 8 | Aikman Bros Corp | | Oil & Gas Operator | Mar 2015 |
| 9 | Aikman Brothers LLC | Amarillo, TX 79109 | Oil & Gas Operator | Dec 2023 |
| 10 | Aladdin Petroleum Corporation | Wichita, KS 67202 | Oil & Gas Operator | Jan 2021 |
| 11 | All Exploration LLC | Oklahoma City, OK 73120-7829 | Oil & Gas Operator | Dec 2023 |
| 12 | Altex Oil Corp | Breckenridge, CO 80424-1057 | Oil & Gas Operator | Dec 1999 |
| 13 | Altman Energy, Inc. | Tulsa, OK 74114 | Oil & Gas Operator | Apr 2024 |
| 14 | American Petroleum Corp | Addison, TX 75001 | Oil & Gas Operator | Apr 2024 |
| 15 | American Warrior Inc | Garden City, KS 67846 | Oil & Gas Operator | Dec 2023 |
| 16 | Ames Financial, Inc | Shreveport, LA 71101 | Oil & Gas Operator | Feb 2024 |
| 17 | Amsler Jerry & Denese | Enid, OK 73703-9300 | Oil & Gas Operator | Jul 2020 |
| 18 | An-Son Corporation | Oklahoma City, OK 73124-0060 | Oil & Gas Operator | Jan 2006 |
| 19 | Anadarko E&P Onshore LLC | Houston, TX 77046 | Oil & Gas Operator | Apr 2024 |
| 20 | Anadarko Petroleum Corporation | Houston, TX 77251 | Oil & Gas Operator | Jan 2024 |
| 21 | Angel Exploration Company | Oklahoma City, OK 73102-8868 | Oil & Gas Operator | Jan 2019 |
| 22 | Angel Exploration LLC | Oklahoma City, OK 73116-3603 | Oil & Gas Operator | Jan 2024 |
| 23 | Anr Pipeline Company | Detroit, MI 48243 | Oil & Gas Operator | Dec 2023 |
| 24 | Anson Company | Oklahoma City, OK 73124 | Oil & Gas Operator | Apr 2018 |
| 25 | Antioch Operating LLC | | Oil & Gas Operator | Jan 2024 |
| 26 | Apache Corporation | Houston, TX 77056 | Oil & Gas Operator | Apr 2024 |
| 27 | Apc Operating Partnership LP | Tulsa, OK 74136-4224 | Oil & Gas Operator | Jun 2015 |
| 28 | Apollo Energies Inc | Pratt, KS 67124 | Oil & Gas Operator | Jan 2024 |
| 29 | Aquila Energy Resources Corp. | Houston, TX 77042 | Oil & Gas Operator | Nov 2013 |
| 30 | Arbor Petroleum Corporation | Oklahoma City, OK 73102-4003 | Oil & Gas Operator | Mar 2011 |
| 31 | Arbuckle Enterprises, Inc. | Edmond, OK 73083 | Oil & Gas Operator | Dec 2023 |
| 32 | Arrington CJM, Inc. | Canadian, TX 79014 | Oil & Gas Operator | Nov 2021 |
| 33 | Arrington Properties Inc | Edmond, OK 73034-3724 | Oil & Gas Operator | May 1996 |
| 34 | Arrow Oil & Gas, LLC | Norman, OK 73070 | Oil & Gas Operator | Apr 2024 |
| 35 | Arrowhead Energy Inc | Edmond, OK 73013 | Oil & Gas Operator | Jan 2024 |
| 36 | Aspen Energy Group, Inc. | Santa Ynez, CA 93460 | Oil & Gas Operator | Mar 2015 |
| 37 | Atchley Resources Inc | Oklahoma City, OK 73134 | Oil & Gas Operator | Jan 2024 |
| 38 | Athena Energy, Inc. | Gallatin, TN 37066 | Oil & Gas Operator | Apr 2024 |
| 39 | Atlantic Richfield Company | Plano, TX 75094-1744 | Oil & Gas Operator | Dec 2016 |
| 40 | Auora Natural Gas & Assoc Prod | Dallas, TX 75205 | Oil & Gas Operator | Dec 2000 |
| 41 | Avalanche Oil & Gas LLC | Kingfisher, OK 73750 | Oil & Gas Operator | Apr 2024 |
| 42 | Avalon Exploration Inc | Tulsa, OK 74119-5401 | Oil & Gas Operator | Dec 2019 |
| 43 | B & B SWD LLC | | Oil Operator | Jan 2024 |
| 44 | B And G Production, Inc. | Woodward, OK 73801 | Oil & Gas Operator | Apr 2024 |
| 45 | B M Energy, Inc. | Hennessey, OK 73742 | Oil & Gas Operator | Nov 2021 |
| 46 | B R Polk Inc | Oklahoma City, OK 73118-1239 | Oil & Gas Operator | Jan 2024 |
| 47 | Bailey Oil Co., Inc. | Neodesha, KS 66757 | Oil & Gas Operator | Jan 2024 |
| 48 | Barby Energy Corporation | Woodward, OK 73802-1660 | Oil & Gas Operator | Dec 2023 |
| 49 | Basa Resources Inc | Dallas, TX 75254 | Oil & Gas Operator | Apr 2024 |
| 50 | BC Operating, Inc. | Midland, TX 79710 | Oil & Gas Operator | Apr 2024 |
| 51 | Bce-Mach LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Jan 2024 |
| 52 | Beck Pump & Supply Inc | Hennessey, OK 73742-0175 | Oil & Gas Operator | Nov 2019 |
| 53 | Beck Resources Incorporated | Hennessey, OK 73742 | Oil & Gas Operator | Dec 2023 |
| 54 | Belco Energy Corp. | Dallas, TX 75231 | Oil & Gas Operator | Mar 2015 |
| 55 | Belisle Pete H | Tulsa, OK 74133 | Oil & Gas Operator | Apr 2015 |
| 56 | Bell & Kinley Company LLC | Piedmont, OK 73078-8918 | Oil & Gas Operator | Jul 2021 |
| 57 | Beren Corporation | Wichita, KS 67206 | Oil & Gas Operator | Apr 2024 |
| 58 | Berexco LLC | Wichita, KS 67206 | Oil & Gas Operator | Apr 2024 |
| 59 | Berry, Thomas N. & Co. | Stillwater, OK 74076 | Oil & Gas Operator | Feb 2012 |
| 60 | Beta Oil Company Inc | Oklahoma City, OK 73157-2958 | Oil & Gas Operator | Dec 2022 |
| 61 | Bettis, Boyle & Stovall | Graham, TX 76450 | Oil & Gas Operator | Apr 2024 |
| 62 | Bevo Production Co. | Amarillo, TX 79101 | Oil & Gas Operator | Dec 2014 |
| 63 | BHP Petroleum (Americas) Inc | Houston, TX 77056 | Oil & Gas Operator | Mar 2015 |
| 64 | Black Dome Energy Corporation | Golden, CO 80401 | Oil & Gas Operator | Dec 2019 |
| 65 | Blackjack Oil & Gas, Inc. | Hennessey, OK 73742 | Oil & Gas Operator | Apr 2024 |
| 66 | Bluebonnet Oil Corporation | Oklahoma City, OK 73162-6249 | Oil & Gas Operator | Dec 2023 |
| 67 | Bluebonnet Oil LLC | | Oil & Gas Operator | Jan 2024 |
| 68 | Bluemark Energy LLC | Tulsa, OK 74135 | Oil & Gas Operator | Dec 2023 |
| 69 | Bluff LTD (The) Partnership | Woodward, OK 73801-3160 | Oil Operator | Dec 1999 |
| 70 | Bogo Energy Corporation | Oklahoma City, OK 73134-1002 | Oil & Gas Operator | Jan 2024 |
| 71 | Boone Operating Inc | Oklahoma City, OK 73118-6014 | Oil & Gas Operator | Dec 2023 |
| 72 | Boswell Energy Corp. | Oklahoma City, OK 73114-7401 | Oil & Gas Operator | Nov 2004 |
| 73 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Dec 2023 |
| 74 | BP Explorationinc/Ofb See #17756 | | Oil & Gas Operator | Apr 2015 |
| 75 | Bracksieck Lloyd H | Boulder, CO 80303 | Oil & Gas Operator | Feb 2019 |
| 76 | Breck Operating Corp. | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2023 |
| 77 | BRG Petroleum Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2020 |
| 78 | BRG Petroleum LLC | Tulsa, OK 74136 | Oil & Gas Operator | Jan 2024 |
| 79 | BRG Petroleum, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Dec 2023 |
| 80 | BRG Production Company | Tulsa, OK 74136-6338 | Oil & Gas Operator | Jan 2024 |
| 81 | Brighton Energy LLC | Tulsa, OK 74170 | Oil & Gas Operator | Mar 2015 |
| 82 | Briscoe Oil Operating Co., Inc. | Kingfisher, OK 73750 | Oil & Gas Operator | Mar 2015 |
| 83 | Brock Oil & Gas Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2019 |
| 84 | Brock Resources, Inc. | New Orleans, LA 70112 | Oil & Gas Operator | Nov 1998 |
| 85 | Bromar Oil Company | Fairview, OK 73737-0006 | Oil & Gas Operator | Apr 2014 |
| 86 | Brower Oil & Gas Co., Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 2024 |
| 87 | Brower, Robert C. | Fort Worth, TX 76116 | Oil & Gas Operator | Apr 2024 |
| 88 | Brown Jeff J Dba Brown Service Co | Enid, OK 73702-1604 | Oil & Gas Operator | Jan 2024 |
| 89 | Bso Inc | Cleveland, OK 74020-0597 | Oil & Gas Operator | Jan 2024 |
| 90 | Bta Oil Producers, LLC | Midland, TX 79701 | Oil & Gas Operator | Apr 2024 |
| 91 | Buckelew Elise A Cowden | | Oil & Gas Operator | Sep 2022 |
| 92 | Buffco Production, Inc. | Longview, TX 75606 | Oil & Gas Operator | Apr 2024 |
| 93 | Bulldog Disposal Inc | Laverne, OK 73848-0504 | Oil Operator | Apr 2014 |
| 94 | Buttonwood Petroleum Inc | Tulsa, OK 74136-4234 | Oil & Gas Operator | Jan 2014 |
| 95 | C & L Oil And Gas Corporation | Norman, OK 73069-8224 | Oil & Gas Operator | Jan 2024 |
| 96 | C&D Supply | Cherokee, OK 73728-5817 | Oil & Gas Operator | Dec 2023 |
| 97 | Cabot Oil & Gas Corporation | Houston, TX 77024 | Oil & Gas Operator | Dec 2023 |
| 98 | Cabot Petroleum Corporation | Englewood, CO 80111-2529 | Oil & Gas Operator | Dec 2004 |
| 99 | Calebs Resources LLC | Edmond, OK 73083-6655 | Oil & Gas Operator | Dec 2023 |
| 100 | Calpine Natural Gas Company L.P. | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |