| 1 | 4G Operating LLC | | Gas Operator | Dec 2023 |
| 2 | A & A Tank Truck Company | Norman, OK 73070-8969 | Oil & Gas Operator | Jan 2024 |
| 3 | Abundance Energy I LLC | | Gas Operator | Dec 2023 |
| 4 | Agave Energy, Inc | Stigler, OK 74462 | Oil & Gas Operator | Jan 2024 |
| 5 | Alexander Energy Corporation | Dallas, TX 75206 | Oil & Gas Operator | Apr 2015 |
| 6 | Alexander Oil Company | Loco, OK 73442-9409 | Oil & Gas Operator | Dec 2023 |
| 7 | Amax Oil & Gas Inc | Fort Worth, TX 76107 | Oil & Gas Operator | Nov 2014 |
| 8 | American Petroleum Corp | Addison, TX 75001 | Oil & Gas Operator | Apr 2024 |
| 9 | Ames Financial, Inc | Shreveport, LA 71101 | Oil & Gas Operator | Feb 2024 |
| 10 | Amoco Energy Trading Corp | Chicago, IL 60601 | Oil & Gas Operator | Apr 2021 |
| 11 | An-Son Corporation | Oklahoma City, OK 73124-0060 | Oil & Gas Operator | Jan 2006 |
| 12 | Anadarko E&P Onshore LLC | Houston, TX 77046 | Oil & Gas Operator | Apr 2024 |
| 13 | Anadarko Minerals Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Jan 2024 |
| 14 | Anc Investments LLC | Enid, OK 73701-1823 | Gas Operator | Dec 2023 |
| 15 | Antara Resources Inc | Houston, TX 77002 | Oil & Gas Operator | Apr 2004 |
| 16 | Apache Corporation | Houston, TX 77056 | Oil & Gas Operator | Apr 2024 |
| 17 | Arkansas Oklahoma Gas Corporation | Fort Smith, AR 72917 | Oil & Gas Operator | Aug 2022 |
| 18 | Arkla Energy Resources | Shreveport, LA 71151 | Oil & Gas Operator | Mar 2015 |
| 19 | Arkoma Holding Corporation | Oklahoma City, OK 73102-5684 | Gas Operator | Jul 2007 |
| 20 | Arkoma Operations LLC | | Oil & Gas Operator | Jan 2024 |
| 21 | Arkoma Production Company | Shreveport, LA 71101 | Gas Operator | Apr 2020 |
| 22 | Arkoma Resources LLC | Henryetta, OK 74437 | Oil & Gas Operator | Dec 2023 |
| 23 | Arrow Oil & Gas, LLC | Norman, OK 73070 | Oil & Gas Operator | Apr 2024 |
| 24 | Atlantic Richfield Company | Plano, TX 75094-1744 | Oil & Gas Operator | Dec 2016 |
| 25 | Atls Production Company LLC | | Gas Operator | Sep 2020 |
| 26 | Auora Natural Gas & Assoc Prod | Dallas, TX 75205 | Oil & Gas Operator | Dec 2000 |
| 27 | B & B SWD LLC | | Oil Operator | Jan 2024 |
| 28 | B & W Operating LLC | Oklahoma City, OK 73116 | Oil & Gas Operator | Jan 2024 |
| 29 | B B R Oil Corporation | Ardmore, OK 73401-6515 | Oil & Gas Operator | Jan 2024 |
| 30 | Bailey Oil Co., Inc. | Neodesha, KS 66757 | Oil & Gas Operator | Jan 2024 |
| 31 | Barrett Resources Corporation | Denver, CO 80202 | Oil & Gas Operator | Sep 2004 |
| 32 | Bay Oaks Resources LLC | | Gas Operator | Feb 2018 |
| 33 | Bayou Resources, Inc. | Houston, TX 77056 | Oil & Gas Operator | Jan 2015 |
| 34 | Bear Productions Inc | Kinta, OK 74552-0142 | Oil & Gas Operator | Dec 2023 |
| 35 | Belport Oil, Inc. | Tulsa, OK 74119 | Oil & Gas Operator | Jan 2024 |
| 36 | BHP Petroleum (Americas) Inc | Houston, TX 77056 | Oil & Gas Operator | Mar 2015 |
| 37 | BHP Petroleum Company Inc | Houston, TX 77057 | Oil & Gas Operator | Jun 2016 |
| 38 | Big Bend Oil Co | Hominy, OK 74035 | Oil & Gas Operator | Aug 2013 |
| 39 | Blackjack Oil & Gas, Inc. | Hennessey, OK 73742 | Oil & Gas Operator | Apr 2024 |
| 40 | Blue Water Resources LLC | | Oil & Gas Operator | Dec 2023 |
| 41 | Bluebonnet Oil Corporation | Oklahoma City, OK 73162-6249 | Oil & Gas Operator | Dec 2023 |
| 42 | Bluebonnet Oil LLC | | Oil & Gas Operator | Jan 2024 |
| 43 | Bluemark Energy LLC | Tulsa, OK 74135 | Oil & Gas Operator | Dec 2023 |
| 44 | Bluff LTD (The) Partnership | Woodward, OK 73801-3160 | Oil Operator | Dec 1999 |
| 45 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Dec 2023 |
| 46 | BP Products North America Inc | Houston, TX 77094 | Gas Operator | Jan 2017 |
| 47 | Bravo Arkoma LLC | | Oil & Gas Operator | Dec 2023 |
| 48 | Breitburn Operating, LP | Houston, TX 77002 | Oil & Gas Operator | Apr 2024 |
| 49 | BRG Petroleum LLC | Tulsa, OK 74136 | Oil & Gas Operator | Jan 2024 |
| 50 | BRG Production Company | Tulsa, OK 74136-6338 | Oil & Gas Operator | Jan 2024 |
| 51 | Briar Oil & Gas - Oklahoma 1 LLC | | Oil & Gas Operator | Dec 2023 |
| 52 | Bristol Resources Corporation | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2022 |
| 53 | Brock Oil & Gas Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2019 |
| 54 | Brooks Energy Company | Tulsa, OK 74114-3304 | Oil & Gas Operator | Jul 2008 |
| 55 | Brower Oil & Gas Co., Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 2024 |
| 56 | Brower, Robert C. | Fort Worth, TX 76116 | Oil & Gas Operator | Apr 2024 |
| 57 | Brown, B J | Tulsa, OK 74133 | Gas Operator | Feb 2008 |
| 58 | Bso Inc | Cleveland, OK 74020-0597 | Oil & Gas Operator | Jan 2024 |
| 59 | Buffco Production, Inc. | Longview, TX 75606 | Oil & Gas Operator | Apr 2024 |
| 60 | Bulldog Operating Company LLC | Shreveport, LA 71101-3680 | Oil & Gas Operator | Jun 2015 |
| 61 | Buttonwood Petroleum Inc | Tulsa, OK 74136-4234 | Oil & Gas Operator | Jan 2014 |
| 62 | Buxton Fred M | Oklahoma City, OK 73116-9111 | Oil & Gas Operator | Feb 2007 |
| 63 | C & H Oil Company | Ratliff City, OK 73481-0130 | Oil & Gas Operator | Apr 2015 |
| 64 | C & L Oil And Gas Corporation | Norman, OK 73069-8224 | Oil & Gas Operator | Jan 2024 |
| 65 | Cabot Petroleum Corporation | Englewood, CO 80111-2529 | Oil & Gas Operator | Dec 2004 |
| 66 | Canvas Energy LLC | Oklahoma City, OK 73142-1839 | Oil & Gas Operator | Jan 2024 |
| 67 | Capstone Oilfield Disposal Service LLC | Hennessey, OK 73742-0698 | Oil Operator | Dec 2019 |
| 68 | Carl E Gungoll Exploration Inc | Oklahoma City, OK 73154-0466 | Oil & Gas Operator | Jan 2016 |
| 69 | Carlson Petroleum Company | Houston, TX 77010 | Oil & Gas Operator | Mar 2015 |
| 70 | Central Ok Reclamation LLC | | Oil & Gas Operator | Jun 2014 |
| 71 | Charter Oak Production Co LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Apr 2024 |
| 72 | Chesapeake Energy MKT Inc | Oklahoma City, OK 73154 | Oil & Gas Operator | May 2022 |
| 73 | Chesapeake Operating, LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Apr 2024 |
| 74 | Cheyenne Petroleum Company | Oklahoma City, OK 73134 | Oil & Gas Operator | Apr 2024 |
| 75 | Cima Energy LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2022 |
| 76 | Cimarron Operating Company | Oklahoma City, OK 73112-3967 | Oil & Gas Operator | May 2011 |
| 77 | Cimarron Petroleum Corporation | Houston, TX 77057-2696 | Oil & Gas Operator | Dec 2023 |
| 78 | Citation Oil & Gas Corp. | Houston, TX 77269 | Oil & Gas Operator | Apr 2024 |
| 79 | Columbia Production Company | Edmond, OK 73083 | Oil & Gas Operator | May 2020 |
| 80 | Comstock Oil & Gas, LP | Frisco, TX 75034 | Oil & Gas Operator | Aug 2019 |
| 81 | Concho Exploration Inc | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2015 |
| 82 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | Apr 2024 |
| 83 | Consolidated Oil & Gas Inc | Wichita, KS 67202 | Oil & Gas Operator | Dec 2012 |
| 84 | Continental Gas Inc | Enid, OK 73702-5103 | Oil & Gas Operator | Apr 2012 |
| 85 | Continental Operating Co. | Houston, TX 77024 | Oil & Gas Operator | Apr 2024 |
| 86 | Continental Resources, Inc. | Oklahoma City, OK 73126 | Oil & Gas Operator | Apr 2024 |
| 87 | Continuum Midstream LLC | Tulsa, OK 74136 | Oil & Gas Operator | Sep 2023 |
| 88 | Convest Energy Corporation | Houston, TX 77057 | Oil & Gas Operator | Sep 2014 |
| 89 | Cordillera Energy Partners LLC | Greenwood VLG, CO 80111 | Oil & Gas Operator | Mar 2020 |
| 90 | Cory, Kenneth W. | Bellaire, TX 77401 | Oil & Gas Operator | Mar 2012 |
| 91 | Cox Oil & Gas, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Mar 2014 |
| 92 | Crest Resources Inc | Tulsa, OK 74103 | Oil & Gas Operator | Apr 2024 |
| 93 | Cross Timbers Operating Co | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2023 |
| 94 | Crown Central Pet Corp | Bellaire, TX 77401 | Oil & Gas Operator | Dec 2016 |
| 95 | Cyanostar Energy, Inc | Tulsa, OK 74103-4122 | Oil & Gas Operator | Sep 2001 |
| 96 | D & B Operating LLC | | Oil Operator | Jan 2023 |
| 97 | D & D Oil Company | Dayton, TX 77535 | Oil & Gas Operator | Apr 2024 |
| 98 | D & G Energy Corporation | Houston, TX 77056 | Oil & Gas Operator | Dec 1995 |
| 99 | D-Pex Operating Company | | Oil & Gas Operator | Sep 2004 |
| 100 | Dab Limited | Oklahoma City, OK 73116-9082 | Oil & Gas Operator | Aug 2013 |