| 1 | 2 W Petroleum | Brownwood, TX 76804 | Oil & Gas Operator | Mar 2025 |
| 2 | 3 S Production, Inc. | Cisco, TX 76437 | Oil & Gas Operator | Mar 2025 |
| 3 | 3-D Oil & Gas | Winters, TX 79567 | Oil & Gas Operator | Mar 2025 |
| 4 | 4 J'S Production | Zephyr, TX 76890 | Oil & Gas Operator | Mar 2025 |
| 5 | 500X Operating LLC | Andrews, TX 79714 | Oil Operator | Mar 2025 |
| 6 | A C Operating Co. | Bangs, TX 76823 | Oil & Gas Operator | Mar 2008 |
| 7 | A E G Oil, Inc. | Hale Center, TX 79041 | Oil & Gas Operator | Mar 2025 |
| 8 | A.E.N. Energy, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Jan 1996 |
| 9 | Aberdeen Petroleum (USA) Inc. | Abilene, TX 79608 | Oil & Gas Operator | Sep 1994 |
| 10 | Abilene American Energy, LLC | Abilene, TX 79602 | Oil Operator | Mar 2025 |
| 11 | Adair Resources Inc. | Ennis, TX 75120 | Oil & Gas Operator | Apr 2018 |
| 12 | Adams Branch Exploration Company | Abilene, TX 79608 | Oil & Gas Operator | Jul 2002 |
| 13 | Advance Exploration | Abilene, TX 79601 | Oil & Gas Operator | Mar 2025 |
| 14 | Agroil, Inc. | Brownwood, TX 76801 | Oil & Gas Operator | Mar 2025 |
| 15 | Akers, B. F. | Graham, TX 76450 | Oil & Gas Operator | Mar 2025 |
| 16 | Alaron Energy, Inc. | Irving, TX 75038 | Oil & Gas Operator | Mar 2025 |
| 17 | Albany Well Service | Albany, TX 76430 | Oil & Gas Operator | Mar 2025 |
| 18 | Alexander Resources, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Mar 2025 |
| 19 | Allegro Operating, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Mar 2025 |
| 20 | Allsop Oil And Gas Company, Inc. | Farmers BRNCH, TX 75234 | Oil & Gas Operator | Nov 1996 |
| 21 | Alpine Petroleum | Abilene, TX 79608 | Oil & Gas Operator | Jul 2018 |
| 22 | Alumni Oil LLC | Plano, TX 75024 | Oil Operator | Mar 2025 |
| 23 | American Energy | Abilene, TX 79604 | Oil & Gas Operator | Jul 2004 |
| 24 | American West | Burkett, TX 76828 | Oil & Gas Operator | Mar 2025 |
| 25 | Anderson, Roger W. Corp. | Clyde, TX 79510 | Oil & Gas Operator | Apr 2020 |
| 26 | Anejo Production, LLC | Electra, TX 76360 | Oil & Gas Operator | Mar 2025 |
| 27 | Aop Operating Corporation | Dallas, TX 75313 | Oil & Gas Operator | Aug 2003 |
| 28 | Arabie, Inc. | Lake Charles, LA 70605 | Oil & Gas Operator | Mar 2025 |
| 29 | Arben Oil, Inc. | Coleman, TX 76834 | Oil & Gas Operator | Mar 2025 |
| 30 | Arcadian Mineral Development | Brownwood, TX 76801 | Oil & Gas Operator | Dec 2013 |
| 31 | Arcadian Mineral Development,LLC | Brownwood, TX 76801 | Oil & Gas Operator | Mar 2025 |
| 32 | Arch Petroleum Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2008 |
| 33 | Archer Petroleum | Frisco, TX 75034 | Oil & Gas Operator | Aug 2021 |
| 34 | Arco Oil & Gas Company | Plano, TX 75086 | Oil & Gas Operator | Mar 2006 |
| 35 | Ark Petroleum Inc. | Clyde, TX 79510 | Oil & Gas Operator | Nov 1997 |
| 36 | Arleand Resources | Overton, TX 75684 | Oil & Gas Operator | Mar 2025 |
| 37 | Arnot Oil Company, LLC | Breckenridge, TX 76424 | Oil & Gas Operator | Mar 2025 |
| 38 | Arnot, W. G., Jr. | Breckenridge, TX 76424 | Oil & Gas Operator | Jan 2017 |
| 39 | Arrowhead Operating Inc. | Argyle, TX 76226 | Oil & Gas Operator | Mar 2025 |
| 40 | Astin Corp. | Dallas, TX 75229 | Oil & Gas Operator | Sep 1994 |
| 41 | Atlas Operating LLC | Houston, TX 77056 | Oil & Gas Operator | Mar 2025 |
| 42 | Aurora Gas, Inc. | Houston, TX 77057 | Oil & Gas Operator | Jan 2000 |
| 43 | Aurora Power Resources, Inc. | Houston, TX 77042 | Oil & Gas Operator | Aug 2018 |
| 44 | Austral Oil Company Incorporated | Sulphur, LA 70663 | Oil & Gas Operator | Mar 2008 |
| 45 | Aztec Drilling & Operating, LLC | Houston, TX 77056 | Oil & Gas Operator | Sep 2015 |
| 46 | B & B Oil, Inc. | Kerrville, TX 78028 | Oil & Gas Operator | Mar 2025 |
| 47 | B&L Operating Co. | Price, TX 75687 | Oil & Gas Operator | Mar 2025 |
| 48 | B-W Oil | Cisco, TX 76437 | Oil & Gas Operator | Mar 2025 |
| 49 | B.R.H. Investments, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Apr 1998 |
| 50 | B.W.O.C., Inc. | Plano, TX 75026 | Oil & Gas Operator | Mar 2025 |
| 51 | Baf Partnership | Coleman, TX 76834 | Oil & Gas Operator | Aug 1995 |
| 52 | Baxter, Kelly H. | Austin, TX 78767 | Oil & Gas Operator | Mar 2008 |
| 53 | Baxter, Kelly H. Oil And Gas Co. | Austin, TX 78767 | Oil & Gas Operator | Nov 2010 |
| 54 | Bayridge Texas Corp. | Big Spring, TX 79720 | Oil & Gas Operator | Jul 2004 |
| 55 | BC Operating, Inc. | Midland, TX 79710 | Oil & Gas Operator | Mar 2025 |
| 56 | Beard Oil Company | Oklahoma City, OK 73102 | Oil & Gas Operator | Aug 2013 |
| 57 | Beasley Well Service Inc. | Tuscola, TX 79562 | Oil Operator | Mar 2025 |
| 58 | Bee-Jay Energy | Whiteface, TX 79379 | Oil & Gas Operator | Nov 1993 |
| 59 | Bendorf Services & Supply Co | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2000 |
| 60 | Benson & Schoen Oil Co., Inc. | Abilene, TX 79602 | Oil & Gas Operator | Apr 2012 |
| 61 | Berry Energy Companies | Abilene, TX 79608 | Oil & Gas Operator | Mar 2025 |
| 62 | Beta-Tex, An Oklahoma Corp. | Oklahoma City, OK 73157 | Oil & Gas Operator | Mar 2025 |
| 63 | Bex, Inc. | Nashville, TN 37209 | Oil & Gas Operator | Aug 2007 |
| 64 | Big D Energy Company | New Braunfels, TX 78132 | Oil & Gas Operator | Mar 2025 |
| 65 | Big Star Oil & Gas, LLC | Midland, TX 79710 | Oil & Gas Operator | Sep 2017 |
| 66 | Big Tio, Inc. | Coleman, TX 76834 | Oil & Gas Operator | Mar 2025 |
| 67 | Black Strata LLC | Weatherford, TX 76086 | Oil Operator | Mar 2025 |
| 68 | Blue Ridge Resources, LLC | Midland, TX 79710 | Oil & Gas Operator | Mar 2025 |
| 69 | Bluegrass Energy Inc | Houston, TX 77057 | Oil & Gas Operator | Jan 2025 |
| 70 | BMB Oil Production | Coleman, TX 76834 | Oil & Gas Operator | Feb 2007 |
| 71 | Bob Hughes Oil Company, LLC | San Angelo, TX 76901 | Oil & Gas Operator | Mar 2025 |
| 72 | Borderline Operating Corp. | Graham, TX 76450 | Oil & Gas Operator | Mar 2025 |
| 73 | Boyd, Clyde Oil & Gas | Graham, TX 76450 | Oil & Gas Operator | Jan 2004 |
| 74 | BP Exploration | Abilene, TX 79604 | Oil & Gas Operator | Aug 2003 |
| 75 | Bpa Oilfield Services | Coleman, TX 76834 | Oil & Gas Operator | Mar 2025 |
| 76 | Bridwell Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Mar 2025 |
| 77 | Bristol Resources Corporation | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2022 |
| 78 | Britnic Oil & Gas, Inc. | College Sta, TX 77845 | Oil & Gas Operator | Mar 2025 |
| 79 | Broadway Petroleum Company, LLC | New York, NY 10152 | Oil Operator | Mar 2025 |
| 80 | Brooks, E. B., Jr. | Dallas, TX 75206 | Oil & Gas Operator | May 2018 |
| 81 | Brown, Edmond | Loving, TX 76460 | Oil & Gas Operator | Dec 2017 |
| 82 | Bullet Development, LLC | Abilene, TX 79601 | Oil & Gas Operator | Mar 2025 |
| 83 | Burger, F.W. Inc. | Abilene, TX 79604 | Oil & Gas Operator | Mar 2008 |
| 84 | Burgess, W. E. | Fort Worth, TX 76147 | Oil & Gas Operator | Mar 2025 |
| 85 | Burk Royalty Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Jan 2002 |
| 86 | Bussey, Joe F. | Graham, TX 76450 | Oil & Gas Operator | Mar 2008 |
| 87 | C & A Enterprises | Ballinger, TX 76821 | Oil & Gas Operator | Mar 2025 |
| 88 | C & L Operating, Inc. | Valera, TX 76884 | Oil & Gas Operator | Mar 2025 |
| 89 | C&P Resources Operating Co,LLC | Houston, TX 77056 | Oil & Gas Operator | Mar 2025 |
| 90 | Caddo Corporation | Austin, TX 78731 | Oil & Gas Operator | Mar 2025 |
| 91 | Caddo Operating Inc. | Marshall, TX 75671 | Oil & Gas Operator | Mar 2025 |
| 92 | Cal-Tex Gas Transmission Co,Inc. | Mabank, TX 75147 | Oil & Gas Operator | Nov 1999 |
| 93 | Cardinal Producing Co. | Abilene, TX 79606 | Oil & Gas Operator | Aug 2003 |
| 94 | Carrland Oil & Gas Inc. | Prosper, TX 75078 | Oil & Gas Operator | Mar 2025 |
| 95 | Carter, Mattye Family Trust | Fort Worth, TX 76109 | Oil & Gas Operator | Oct 2002 |
| 96 | Carter, Mattye L., Estate Of | Gladewater, TX 75647 | Oil & Gas Operator | Feb 1995 |
| 97 | Cedar Oil Company | Midland, TX 79707 | Oil & Gas Operator | Mar 2025 |
| 98 | Cedar Ridge Energy, Inc. | Coleman, TX 76834 | Oil & Gas Operator | Mar 2025 |
| 99 | Celero Energy LP | Midland, TX 79701 | Oil & Gas Operator | May 2011 |
| 100 | Centaur Petroleum Corporation | Fort Worth, TX 76101 | Oil & Gas Operator | Mar 2025 |