| 1 | 3-T Exploration, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | May 2025 |
| 2 | 5stone Operating Inc | Big Lake, TX 76932 | Oil Operator | May 2025 |
| 3 | 7S Oil & Gas, LLC | Midland, TX 79706 | Oil & Gas Operator | Dec 2019 |
| 4 | 801 LLC | Artesia, NM 88211 | Oil & Gas Operator | Oct 2023 |
| 5 | A & G Producers, Inc. | Barstow, TX 79719 | Oil & Gas Operator | May 2025 |
| 6 | Abel, M.D. Co. | Lampasas, TX 76550 | Oil & Gas Operator | Jun 2017 |
| 7 | Ace Energy LLC | Leawood, KS 66211 | Oil & Gas Operator | Feb 2025 |
| 8 | Adventure Exploration PTRS, LLC | Midland, TX 79702 | Oil & Gas Operator | Aug 2012 |
| 9 | Alegre Energy, Inc. | San Antonio, TX 78216 | Oil & Gas Operator | May 2025 |
| 10 | Allar Co., The | Graham, TX 76450 | Oil & Gas Operator | Dec 2004 |
| 11 | Alpha Petrovision Us Inc | Canada, 00100 | Oil & Gas Operator | May 2013 |
| 12 | Alta Energy Corporation | Midland, TX 79701 | Oil & Gas Operator | Apr 1995 |
| 13 | Altura Energy LTD. | Houston, TX 77210 | Oil & Gas Operator | Apr 2000 |
| 14 | Amax Oil & Gas Inc | Fort Worth, TX 76107 | Oil & Gas Operator | Nov 2014 |
| 15 | American Energy-Perm Basin, LLC | Oklahoma City, OK 73113 | Oil & Gas Operator | May 2016 |
| 16 | American Exploration Company | Houston, TX 77010 | Oil & Gas Operator | Jan 2000 |
| 17 | Amerind Oil Company, LTD. | Midland, TX 79701 | Oil & Gas Operator | Nov 2004 |
| 18 | Amoco Production Co. | Houston, TX 77253 | Oil & Gas Operator | Jun 2015 |
| 19 | Anadarko E&P Company LP | Houston, TX 77251 | Oil & Gas Operator | Aug 2014 |
| 20 | Anadarko Ogc Company | Houston, TX 77251 | Oil & Gas Operator | Dec 1998 |
| 21 | Andector Exploration Company | Midland, TX 79702 | Oil & Gas Operator | May 2025 |
| 22 | Angle Oil Company | Hays, KS 67601 | Oil Operator | Sep 2002 |
| 23 | Apache Corporation | Houston, TX 77042 | Oil & Gas Operator | May 2025 |
| 24 | Apv McCamey LLC | MC Camey, TX 79752 | Oil & Gas Operator | May 2025 |
| 25 | Arch Oil & Gas, LLC | Dallas, TX 75254 | Oil & Gas Operator | May 2025 |
| 26 | Arch Petroleum Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2008 |
| 27 | Arco Oil & Gas Company | Plano, TX 75086 | Oil & Gas Operator | Mar 2006 |
| 28 | Arco Permian | Houston, TX 77079 | Oil & Gas Operator | Dec 2001 |
| 29 | Area Pipe And Equipment | Midland, TX 79702 | Oil & Gas Operator | Apr 2003 |
| 30 | Arena Production Company | Midland, TX 79710 | Oil & Gas Operator | May 2025 |
| 31 | Aries Operating LP | Houston, TX 77042 | Oil & Gas Operator | May 2025 |
| 32 | Aries Operating, LLC | Houston, TX 77010 | Oil & Gas Operator | Feb 2010 |
| 33 | Arkland, Inc. | Midland, TX 79701 | Oil & Gas Operator | Jul 1994 |
| 34 | Armor Petroleum, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | May 2025 |
| 35 | Aroc (Texas) Inc | Houston, TX 77090 | Oil & Gas Operator | Dec 2014 |
| 36 | Aspen Land & Exploration Co | Tulsa, OK 74159-0335 | Oil & Gas Operator | Jul 2001 |
| 37 | Aspen Operating Company LLC | Fort Worth, TX 76116 | Oil & Gas Operator | May 2025 |
| 38 | Athlon Energy Operating LLC | Denver, CO 80202 | Oil & Gas Operator | Apr 2014 |
| 39 | Athlon Fe Operating LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jan 2015 |
| 40 | Athlon Holdings LP | Denver, CO 80202 | Oil & Gas Operator | Jan 2015 |
| 41 | Atlas Operating LLC | Houston, TX 77056 | Oil & Gas Operator | May 2025 |
| 42 | Avad Operating, LLC | Dallas, TX 75201 | Oil & Gas Operator | May 2025 |
| 43 | Badger Oil Company | Midland, TX 79701 | Oil & Gas Operator | Jun 1996 |
| 44 | Badger Oil Corporation | Lafayette, LA 70505 | Oil & Gas Operator | Nov 2011 |
| 45 | Bam Permian Operating, LLC | Midland, TX 79707 | Oil & Gas Operator | May 2025 |
| 46 | Barnett Energy, Inc. | The Colony, TX 75056 | Oil & Gas Operator | May 2025 |
| 47 | Basic Energy Services, L.P. | Fort Worth, TX 76102 | Oil Operator | May 2025 |
| 48 | Baxter, Kelly H. | Austin, TX 78767 | Oil & Gas Operator | Mar 2008 |
| 49 | Bay Rock Operating Company | San Antonio, TX 78212 | Oil & Gas Operator | May 2025 |
| 50 | Baylor Operating, LLC | Austin, TX 78766 | Oil & Gas Operator | May 2025 |
| 51 | Baytech Inc | Midland, TX 79702 | Oil & Gas Operator | Aug 2003 |
| 52 | BC Operating, Inc. | Midland, TX 79710 | Oil & Gas Operator | May 2025 |
| 53 | BCP Resources, LLC | Midland, TX 79705 | Oil & Gas Operator | May 2025 |
| 54 | Beach Exploration, Inc. | Midland, TX 79701 | Oil & Gas Operator | May 2025 |
| 55 | Belco Energy Corp. | Dallas, TX 75231 | Oil & Gas Operator | Mar 2015 |
| 56 | Bell, Cody, Jr. | Midland, TX 79702 | Oil & Gas Operator | May 2025 |
| 57 | Belvan Corp. | Midland, TX 79701 | Oil & Gas Operator | Jun 1998 |
| 58 | Berry Oil Comp. | Houston, TX 77002 | Oil & Gas Operator | Jul 2014 |
| 59 | Bettis, Boyle & Stovall | Graham, TX 76450 | Oil & Gas Operator | May 2025 |
| 60 | BHP Petroleum (Americas) Inc | Houston, TX 77056 | Oil & Gas Operator | Mar 2015 |
| 61 | Big D Energy Company | New Braunfels, TX 78132 | Oil & Gas Operator | May 2025 |
| 62 | Big Star Oil & Gas, LLC | Midland, TX 79710 | Oil & Gas Operator | Sep 2017 |
| 63 | Bishop, D. L. | Midland, TX 79702 | Oil & Gas Operator | Mar 2012 |
| 64 | BJG Operating Company | Midland, TX 79702 | Oil Operator | May 2025 |
| 65 | Black Arrow Operating, LLC | Dennis, TX 76439 | Oil & Gas Operator | May 2025 |
| 66 | Black Gold Energy LLC | Jenks, OK 74037 | Oil Operator | Jun 2024 |
| 67 | Black Resources, Inc. | Granbury, TX 76049 | Oil & Gas Operator | Mar 2008 |
| 68 | Bluestem Energy Holdings, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Jun 2015 |
| 69 | Boaz Energy II Operating, LLC | Midland, TX 79705 | Oil & Gas Operator | May 2025 |
| 70 | Bold Operating, LLC | The Woodlands, TX 77381 | Oil & Gas Operator | May 2019 |
| 71 | Bomar Operating Co., LC | Bellaire, TX 77401 | Oil & Gas Operator | May 2025 |
| 72 | Boyd & McWilliams Energy Group | Midland, TX 79701 | Oil & Gas Operator | May 2025 |
| 73 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Feb 2025 |
| 74 | Braman, D. H., Jr. | Victoria, TX 77901 | Oil & Gas Operator | Dec 2008 |
| 75 | Brazos Petroleum, Inc. | Graham, TX 76450 | Oil & Gas Operator | May 2025 |
| 76 | Breck Operating Corp. | Breckenridge, TX 76424 | Oil & Gas Operator | Feb 2025 |
| 77 | Breitburn Operating LP | Houston, TX 77002 | Oil & Gas Operator | May 2025 |
| 78 | Bridwell Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | May 2025 |
| 79 | Bright & Company | The Colony, TX 75056 | Oil & Gas Operator | May 2015 |
| 80 | Broken Horse, LLC | Rankin, TX 79778 | Oil & Gas Operator | May 2025 |
| 81 | Brotherton Production Co. | Spokane, WA 99216 | Oil & Gas Operator | May 2025 |
| 82 | Brown Tom Inc | Dallas, TX 75240 | Oil & Gas Operator | Mar 2015 |
| 83 | Brown, George R. Partnership,The | Houston, TX 77002 | Oil & Gas Operator | May 2006 |
| 84 | Brown, H. L., Jr. | Midland, TX 79702 | Oil & Gas Operator | May 2002 |
| 85 | Bta Oil Producers | Midland, TX 79701 | Oil & Gas Operator | Sep 2009 |
| 86 | Bta Oil Producers, LLC | Midland, TX 79701 | Oil & Gas Operator | May 2025 |
| 87 | Burk Royalty Co., LTD. | Wichita Falls, TX 76308 | Oil & Gas Operator | May 2025 |
| 88 | Burk Royalty Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Jan 2002 |
| 89 | Burlington Res O & G Co-McCamey | Midland, TX 79702 | Oil Operator | Mar 2002 |
| 90 | Burlington Resources Oil & Gas Company LP | Houston, TX 77252 | Oil & Gas Operator | May 2025 |
| 91 | Burlington Resources Oil And Gas Co. | Houston, TX 77210 | Oil & Gas Operator | Mar 2023 |
| 92 | Bustamante Oil Company | Midland, TX 79710 | Oil & Gas Operator | May 2025 |
| 93 | Bustamante Resources LLC | Midland, TX 79710 | Oil & Gas Operator | May 2025 |
| 94 | Buttram Energies Inc | Oklahoma City, OK 73112-7235 | Oil & Gas Operator | Nov 2021 |
| 95 | Bynum Oil Company, Inc. | Midland, TX 79702 | Oil & Gas Operator | Jul 2003 |
| 96 | Byrd Operating Company | Midland, TX 79702 | Oil & Gas Operator | May 2025 |
| 97 | Calfas Cattle & Oil, LLC | San Antonio, TX 78205 | Oil & Gas Operator | May 2025 |
| 98 | Callon Petroleum Operating Co | Houston, TX 77042 | Oil & Gas Operator | Jul 2024 |
| 99 | Cambrian Management LTD | McCaulley, TX 79534 | Oil & Gas Operator | May 2025 |
| 100 | Camterra Resources, Inc. | Marshall, TX 75671 | Oil & Gas Operator | May 2025 |