| 1 | 1836 Energy LLC | El Campo, TX 77437 | Oil Operator | May 2025 |
| 2 | 1894 Petroleum Partners, LLC | Odessa, TX 79765 | Oil & Gas Operator | May 2025 |
| 3 | 3tec Energy Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2019 |
| 4 | 7S Oil & Gas, LLC | Midland, TX 79706 | Oil & Gas Operator | Dec 2019 |
| 5 | Abarta Oil & Gas Co., Inc. | Pittsburgh, PA 15238 | Oil & Gas Operator | Dec 2020 |
| 6 | Abel, M.D. Co. | Lampasas, TX 76550 | Oil & Gas Operator | Jun 2017 |
| 7 | Acoma Oil Corporation | Saint Paul, MN 55102 | Oil & Gas Operator | May 2025 |
| 8 | Adkins, R. L. Corp. | Lubbock, TX 79408 | Oil & Gas Operator | Jun 2013 |
| 9 | Admiral Permian Operating LLC | Midland, TX 79701 | Oil & Gas Operator | May 2025 |
| 10 | Adventure Exploration PTRS, LLC | Midland, TX 79702 | Oil & Gas Operator | Aug 2012 |
| 11 | Aethon I LP | Dallas, TX 75206 | Oil & Gas Operator | Mar 2015 |
| 12 | Aggietech Oil, LTD. | Midland, TX 79701 | Oil & Gas Operator | Aug 2016 |
| 13 | Aghorn Operating, Inc. | Odessa, TX 79768 | Oil & Gas Operator | May 2025 |
| 14 | Aikman Brothers, LLC | Amarillo, TX 79109 | Oil & Gas Operator | Jan 2025 |
| 15 | Aj'S Pump Truck Service, Inc. | Odessa, TX 79760 | Oil & Gas Operator | May 2025 |
| 16 | Ajax Resources, LLC | Houston, TX 77046 | Oil & Gas Operator | May 2025 |
| 17 | Alleder Inc. | Midland, TX 79702 | Oil & Gas Operator | May 2025 |
| 18 | Alpine Resources, Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2008 |
| 19 | Alta Energy Corporation | Midland, TX 79701 | Oil & Gas Operator | Apr 1995 |
| 20 | Altura Energy LTD. | Houston, TX 77210 | Oil & Gas Operator | Apr 2000 |
| 21 | Amcon Resources, Inc. | Oklahoma City, OK 73101 | Gas Operator | Jun 2016 |
| 22 | American Exploration Company | Houston, TX 77010 | Oil & Gas Operator | Jan 2000 |
| 23 | Americo Energy Resources, LLC | Houston, TX 77063 | Oil & Gas Operator | May 2025 |
| 24 | Amerind Oil Company, LTD. | Midland, TX 79701 | Oil & Gas Operator | Nov 2004 |
| 25 | Amoco Production Co. | Houston, TX 77253 | Oil & Gas Operator | Jun 2015 |
| 26 | Amplify Energy Operating LLC | Houston, TX 77002 | Oil & Gas Operator | May 2025 |
| 27 | Anadarko E&P Onshore LLC | Houston, TX 77046 | Oil & Gas Operator | May 2025 |
| 28 | Anadarko Petroleum Corporation | Houston, TX 77251 | Oil & Gas Operator | Mar 2025 |
| 29 | Andector Exploration Company | Midland, TX 79702 | Oil & Gas Operator | May 2025 |
| 30 | Angle Oil Company | Hays, KS 67601 | Oil Operator | Sep 2002 |
| 31 | Antelope Energy Company LLC | Denver, CO 80202 | Oil & Gas Operator | Dec 2024 |
| 32 | Anthony, Bob G. Inc. | Brookhaven, MS 39601 | Oil & Gas Operator | May 2025 |
| 33 | Apache Corporation | Houston, TX 77042 | Oil & Gas Operator | May 2025 |
| 34 | Apex Royalties, Inc. | Midland, TX 79702 | Oil & Gas Operator | May 1997 |
| 35 | Aratex Production Company | Denver, CO 80202 | Oil & Gas Operator | Jun 2003 |
| 36 | Arch Oil & Gas, LLC | Dallas, TX 75254 | Oil & Gas Operator | May 2025 |
| 37 | Arch Petroleum Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2008 |
| 38 | Arco Oil & Gas Company | Plano, TX 75086 | Oil & Gas Operator | Mar 2006 |
| 39 | Arco Permian | Houston, TX 77079 | Oil & Gas Operator | Dec 2001 |
| 40 | Ard Drilling Company Inc. | Abilene, TX 79604 | Oil & Gas Operator | Jun 2000 |
| 41 | Ares Energy, LTD. | Midland, TX 79701 | Oil & Gas Operator | May 2025 |
| 42 | Argus Drilling, LLC | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 43 | Aroc (Texas) Inc | Houston, TX 77090 | Oil & Gas Operator | Dec 2014 |
| 44 | Arrington,David H. Oil & Gas,Inc | Midland, TX 79702 | Oil & Gas Operator | May 2025 |
| 45 | Arrow Operating Company | Dallas, TX 75231 | Oil & Gas Operator | Dec 2024 |
| 46 | Ary, J. Kirk | Midland, TX 79708 | Oil & Gas Operator | Jun 1993 |
| 47 | Aspen Energy Group, Inc. | Santa Ynez, CA 93460 | Oil & Gas Operator | Mar 2015 |
| 48 | Aspen Exploration, Inc. | Houston, TX 77002 | Oil & Gas Operator | Dec 2012 |
| 49 | Aspen Land & Exploration Co | Tulsa, OK 74159-0335 | Oil & Gas Operator | Jul 2001 |
| 50 | Aspen Operating Company LLC | Fort Worth, TX 76116 | Oil & Gas Operator | May 2025 |
| 51 | Atapco | Houston, TX 77040 | Oil & Gas Operator | Feb 1999 |
| 52 | Athlon Energy Operating LLC | Denver, CO 80202 | Oil & Gas Operator | Apr 2014 |
| 53 | Athlon Holdings LP | Denver, CO 80202 | Oil & Gas Operator | Jan 2015 |
| 54 | Atlas Operating LLC | Houston, TX 77056 | Oil & Gas Operator | May 2025 |
| 55 | Ausland Production Company | Midland, TX 79702 | Oil & Gas Operator | May 1999 |
| 56 | Autumn Energy LLC | Andrews, TX 79714 | Oil Operator | Aug 2017 |
| 57 | Autumn Energy Operating | Midland, TX 79710 | Oil & Gas Operator | May 2025 |
| 58 | Avalon TX Operating, LLC | Andrews, TX 79714 | Oil & Gas Operator | Jan 2023 |
| 59 | B & R Contracting | Milam, TX 75959 | Gas Operator | Apr 2003 |
| 60 | B & R Oil, Inc. | Odessa, TX 79768 | Oil & Gas Operator | May 2025 |
| 61 | B & W Southern Petroleum | The Woodlands, TX 77381 | Oil & Gas Operator | Aug 2009 |
| 62 | B K Energy, Inc. | Andrews, TX 79714 | Oil & Gas Operator | Oct 2006 |
| 63 | Baber Well Servicing Co. | Hobbs, NM 88240 | Oil & Gas Operator | May 1995 |
| 64 | Baker Operating, Inc. | Odessa, TX 79764 | Oil & Gas Operator | May 2025 |
| 65 | Bald Eagle Operating Inc. | Midland, TX 79707 | Oil & Gas Operator | May 2025 |
| 66 | Bam Permian Operating, LLC | Midland, TX 79707 | Oil & Gas Operator | May 2025 |
| 67 | Barrett Resources Corporation | Denver, CO 80202 | Oil & Gas Operator | Sep 2004 |
| 68 | Barrow Petroleum LLC | Midland, TX 79710 | Oil & Gas Operator | May 2025 |
| 69 | Basa Resources, Inc. | Dallas, TX 75254 | Oil & Gas Operator | May 2025 |
| 70 | Basic Energy Services, L.P. | Fort Worth, TX 76102 | Oil Operator | May 2025 |
| 71 | Basin Oil & Gas Operating, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | May 2025 |
| 72 | Basin Well Service Of Odessa,Inc | Odessa, TX 79768 | Oil & Gas Operator | May 2025 |
| 73 | Bass Enterprises Production Co | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2006 |
| 74 | Bass Petroleum Inc | Austin, TX 78716 | Oil & Gas Operator | May 2025 |
| 75 | Baxter, Kelly H. | Austin, TX 78767 | Oil & Gas Operator | Mar 2008 |
| 76 | Baxter, Kelly H. Oil And Gas Co. | Austin, TX 78767 | Oil & Gas Operator | Nov 2010 |
| 77 | Baylor Operating, LLC | Austin, TX 78766 | Oil & Gas Operator | May 2025 |
| 78 | Baytech Inc | Midland, TX 79702 | Oil & Gas Operator | Aug 2003 |
| 79 | BC Operating, Inc. | Midland, TX 79710 | Oil & Gas Operator | May 2025 |
| 80 | BCP Resources, LLC | Midland, TX 79705 | Oil & Gas Operator | May 2025 |
| 81 | Bedford Oil & Gas, Inc. | Luling, TX 78648 | Oil & Gas Operator | May 2025 |
| 82 | Beekay Company | Dallas, TX 75219 | Oil & Gas Operator | Dec 1996 |
| 83 | Belco Energy Corp. | Dallas, TX 75231 | Oil & Gas Operator | Mar 2015 |
| 84 | Bennett, M. Brad LP | Midland, TX 79710 | Oil & Gas Operator | Jan 2006 |
| 85 | Bepco, L.P. | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2008 |
| 86 | Bettis, Boyle & Stovall | Graham, TX 76450 | Oil & Gas Operator | May 2025 |
| 87 | Betwell Oil & Gas Company | Hialeah, FL 33002 | Oil & Gas Operator | May 2025 |
| 88 | Big D Energy Company | New Braunfels, TX 78132 | Oil & Gas Operator | May 2025 |
| 89 | Big Shell Oil & Gas, Inc. | Taft, TX 78390 | Oil & Gas Operator | May 2025 |
| 90 | Birch Operations, Inc. | Houston, TX 77010 | Oil & Gas Operator | May 2025 |
| 91 | Black Arrow Operating, LLC | Dennis, TX 76439 | Oil & Gas Operator | May 2025 |
| 92 | Black Gold Energy LLC | Jenks, OK 74037 | Oil Operator | Jun 2024 |
| 93 | Blackbeard Operating, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | May 2025 |
| 94 | Blair Exploration, Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 2011 |
| 95 | Blanco Oil Co. | San Antonio, TX 78230 | Oil & Gas Operator | Feb 2004 |
| 96 | Block "T" Petroleum, Inc. | Tyler, TX 75707 | Oil & Gas Operator | May 2025 |
| 97 | Blue Ridge Resources, LLC | Midland, TX 79710 | Oil & Gas Operator | May 2025 |
| 98 | Bluestem Energy Holdings, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Jun 2015 |
| 99 | Boaz Energy II Operating, LLC | Midland, TX 79705 | Oil & Gas Operator | May 2025 |
| 100 | Boge, Inc. | Lubbock, TX 79424 | Oil & Gas Operator | May 2025 |