| 1 | 3tec Energy Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2019 |
| 2 | 7S Oil & Gas, LLC | Midland, TX 79706 | Oil & Gas Operator | Dec 2019 |
| 3 | 94 Operating, LP | Sanger, TX 76266 | Oil Operator | Oct 2025 |
| 4 | A.O.E. Operators, Inc. | Fulshear, TX 77441 | Oil & Gas Operator | Oct 2025 |
| 5 | Ableready, Inc. | Houston, TX 77269 | Oil & Gas Operator | Oct 2025 |
| 6 | Acoma Operating, LLC | Lubbock, TX 79424 | Oil & Gas Operator | Oct 2025 |
| 7 | Adventure Operating Company, LLC | Midland, TX 79702 | Oil & Gas Operator | Jan 2021 |
| 8 | Aggietech Oil, LTD. | Midland, TX 79701 | Oil & Gas Operator | Aug 2016 |
| 9 | Aghorn Operating, Inc. | Odessa, TX 79768 | Oil & Gas Operator | Oct 2025 |
| 10 | Alegre Energy, Inc. | San Antonio, TX 78216 | Oil & Gas Operator | Oct 2025 |
| 11 | Alleder Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 12 | Alps Oil Company | Odessa, TX 79760 | Oil & Gas Operator | Aug 1999 |
| 13 | Alta Energy Corporation | Midland, TX 79701 | Oil & Gas Operator | Apr 1995 |
| 14 | Alto Minerals, Inc. | Midland, TX 79708 | Oil & Gas Operator | Apr 2019 |
| 15 | Altura Energy LTD. | Houston, TX 77210 | Oil & Gas Operator | Apr 2000 |
| 16 | Amerada Hess Corporation | Houston, TX 77252 | Oil & Gas Operator | Aug 2013 |
| 17 | American Exploration Company | Houston, TX 77010 | Oil & Gas Operator | Jan 2000 |
| 18 | Amerind Oil Company, LTD. | Midland, TX 79701 | Oil & Gas Operator | Nov 2004 |
| 19 | Ammonite Energy Texas, Inc. | Midland, TX 79710 | Oil & Gas Operator | Aug 2003 |
| 20 | Amoco Production Co. | Houston, TX 77253 | Oil & Gas Operator | Jun 2015 |
| 21 | Anadarko E&P Company LP | Houston, TX 77251 | Oil & Gas Operator | Aug 2014 |
| 22 | Anadarko Petroleum Corporation | Houston, TX 77251 | Oil & Gas Operator | Jul 2025 |
| 23 | Andector Exploration Company | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 24 | Antelope Energy Company LLC | Denver, CO 80202 | Oil & Gas Operator | Dec 2024 |
| 25 | Antelope Production Co. | Midland, TX 79701 | Oil & Gas Operator | Oct 1995 |
| 26 | Apache Corporation | Houston, TX 77042 | Oil & Gas Operator | Oct 2025 |
| 27 | Apache Energy Resources Corp | Houston, TX 77056 | Oil & Gas Operator | Mar 2015 |
| 28 | Apex Royalties, Inc. | Midland, TX 79702 | Oil & Gas Operator | May 1997 |
| 29 | Apv McCamey LLC | MC Camey, TX 79752 | Oil & Gas Operator | Oct 2025 |
| 30 | Arch Oil & Gas, LLC | Dallas, TX 75254 | Oil & Gas Operator | Oct 2025 |
| 31 | Arch Petroleum Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2008 |
| 32 | Arco Oil & Gas Company | Plano, TX 75086 | Oil & Gas Operator | Mar 2006 |
| 33 | Arco Permian | Houston, TX 77079 | Oil & Gas Operator | Dec 2001 |
| 34 | Ares Energy, LTD. | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 35 | Arete Creek Operating, LLC | Midland, TX 79703 | Oil & Gas Operator | Oct 2025 |
| 36 | Armor Petroleum, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Oct 2025 |
| 37 | Aroc (Texas) Inc | Houston, TX 77090 | Oil & Gas Operator | Dec 2014 |
| 38 | Arrington Oil&Gas Operating LLC | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 39 | Arrington,David H. Oil & Gas,Inc | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 40 | Athlon Holdings LP | Denver, CO 80202 | Oil & Gas Operator | Jan 2015 |
| 41 | Atlas Operating LLC | Houston, TX 77056 | Oil & Gas Operator | Oct 2025 |
| 42 | Ausland Production Company | Midland, TX 79702 | Oil & Gas Operator | May 1999 |
| 43 | Avad Operating, LLC | Dallas, TX 75201 | Oil & Gas Operator | Oct 2025 |
| 44 | B & B Production Co | Midland, TX 79708 | Oil & Gas Operator | Dec 2002 |
| 45 | B & R Oil, Inc. | Odessa, TX 79768 | Oil & Gas Operator | Dec 2024 |
| 46 | B M Energy, Inc. | Hennessey, OK 73742 | Oil & Gas Operator | Jan 2022 |
| 47 | B. W. P., Inc. | Diboll, TX 75941 | Oil & Gas Operator | Mar 2015 |
| 48 | Baber Well Servicing Co. | Hobbs, NM 88240 | Oil & Gas Operator | May 1995 |
| 49 | Baker Operating, Inc. | Odessa, TX 79764 | Oil & Gas Operator | Oct 2025 |
| 50 | Banam Corporation | Midland, TX 79702 | Oil & Gas Operator | Nov 2013 |
| 51 | Bargo Energy Company | Houston, TX 77010 | Oil & Gas Operator | May 2001 |
| 52 | Barnett Energy, Inc. | The Colony, TX 75056 | Oil & Gas Operator | Oct 2025 |
| 53 | Barrow Petroleum LLC | Midland, TX 79710 | Oil & Gas Operator | Oct 2025 |
| 54 | Basic Energy Services, L.P. | Fort Worth, TX 76102 | Oil Operator | Oct 2025 |
| 55 | Basin Oil & Gas Operating LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Oct 2025 |
| 56 | Basin Well Service Of Odessa,Inc | Odessa, TX 79768 | Oil & Gas Operator | Oct 2025 |
| 57 | Baxter, D. B. Inc. | Midland, TX 79708 | Oil & Gas Operator | Oct 2025 |
| 58 | Baxter, Kelly H. | Austin, TX 78767 | Oil & Gas Operator | Mar 2008 |
| 59 | Baxter, Kelly H. Oil And Gas Co. | Austin, TX 78767 | Oil & Gas Operator | Nov 2010 |
| 60 | Baytech Inc | Midland, TX 79702 | Oil & Gas Operator | Aug 2003 |
| 61 | BC Operating, Inc. | Midland, TX 79710 | Oil & Gas Operator | Oct 2025 |
| 62 | BCP Resources, LLC | Midland, TX 79705 | Oil & Gas Operator | Oct 2025 |
| 63 | Beach Exploration, Inc. | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 64 | Bean & Bean Inc. | Houston, TX 77269 | Oil & Gas Operator | Jan 2023 |
| 65 | Bedford Oil & Gas, Inc. | Luling, TX 78648 | Oil & Gas Operator | Oct 2025 |
| 66 | Belco Energy Corp. | Dallas, TX 75231 | Oil & Gas Operator | Mar 2015 |
| 67 | Bell Energy | Kermit, TX 79745 | Oil & Gas Operator | Oct 2025 |
| 68 | Bellwether Exploration Company | Houston, TX 77010 | Oil & Gas Operator | May 2001 |
| 69 | Belmac, Inc. | Dallas, TX 75248 | Oil & Gas Operator | Nov 1998 |
| 70 | Bennett, R. C., Company | Midland, TX 79702 | Oil & Gas Operator | Dec 2019 |
| 71 | Berry Oil Comp. | Houston, TX 77002 | Oil & Gas Operator | Jul 2014 |
| 72 | Bettis, Boyle & Stovall | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 73 | BHB Operating Inc. | Fort Worth, TX 76137 | Oil & Gas Operator | Oct 2025 |
| 74 | Big "6" Drilling Company | Houston, TX 77063 | Oil & Gas Operator | Mar 2019 |
| 75 | Big Star Oil & Gas, LLC | Midland, TX 79710 | Oil & Gas Operator | Sep 2017 |
| 76 | Bingham'S Oil & Gas | Midland, TX 79708 | Oil & Gas Operator | Jan 2002 |
| 77 | Bishop, D. L. | Midland, TX 79702 | Oil & Gas Operator | Mar 2012 |
| 78 | Black Gold Energy LLC | Jenks, OK 74037 | Oil Operator | Jun 2024 |
| 79 | Black Resources, Inc. | Granbury, TX 76049 | Oil & Gas Operator | Mar 2008 |
| 80 | Blackbeard Operating, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Oct 2025 |
| 81 | Blair, Jack N. | Midland, TX 79702 | Oil & Gas Operator | May 1996 |
| 82 | Blanco Oil Co. | San Antonio, TX 78230 | Oil & Gas Operator | Feb 2004 |
| 83 | Bluco Production Co., Inc. | Austin, TX 78716 | Oil & Gas Operator | Oct 2025 |
| 84 | Blue Ridge Resources, LLC | Midland, TX 79710 | Oil & Gas Operator | Oct 2025 |
| 85 | Boaz Energy II Operating, LLC | Midland, TX 79705 | Oil & Gas Operator | Oct 2025 |
| 86 | Borderline Operating Corp. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 87 | Boyd & McWilliams Energy Group | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 88 | Boyd & McWilliams Operating, LLC | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 89 | Boyd, D. K. Oil And Gas Co.,Inc. | Midland, TX 79703 | Oil & Gas Operator | Oct 2025 |
| 90 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Jun 2025 |
| 91 | Breck Operating Corp. | Breckenridge, TX 76424 | Oil & Gas Operator | Jun 2025 |
| 92 | Breitburn Operating LP | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 93 | Bridge Oil Company LP | Midland, TX 79702 | Oil & Gas Operator | May 1999 |
| 94 | Bridwell Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Oct 2025 |
| 95 | Bright & Company | The Colony, TX 75056 | Oil & Gas Operator | May 2015 |
| 96 | Broadway Operating Company Inc. | Lubbock, TX 79401 | Oil & Gas Operator | Aug 2002 |
| 97 | Brock Oil & Gas Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2019 |
| 98 | Brock, J. | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 99 | Brothers Production Company Inc. | Midland, TX 79708 | Oil & Gas Operator | Oct 2025 |
| 100 | Brown, Geo. R Partnership,LP,The | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |