| 1 | 20TH Century Pipe & Equip.Co.Inc | Midland, TX 79702 | Oil & Gas Operator | Aug 2003 |
| 2 | 3-M Energy Corporation | San Angelo, TX 76902 | Oil & Gas Operator | Jun 2017 |
| 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 | Admiral Permian Operating LLC | Midland, TX 79701 | Oil & Gas Operator | May 2025 |
| 6 | Aghorn Operating, Inc. | Odessa, TX 79768 | Oil & Gas Operator | May 2025 |
| 7 | Alchemist Energy, LLC | Irving, TX 75062 | Oil & Gas Operator | May 2025 |
| 8 | Allar Co., The | Graham, TX 76450 | Oil & Gas Operator | Dec 2004 |
| 9 | Amcon Resources, Inc. | Oklahoma City, OK 73101 | Gas Operator | Jun 2016 |
| 10 | Amerac Energy Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Jun 2013 |
| 11 | Ameredev Operating, LLC | Austin, TX 78746 | Oil & Gas Operator | May 2025 |
| 12 | Ameredev Texas, LLC | Austin, TX 78746 | Oil & Gas Operator | Jan 2025 |
| 13 | American Exploration Company | Houston, TX 77010 | Oil & Gas Operator | Jan 2000 |
| 14 | Amoco Production Co. | Houston, TX 77253 | Oil & Gas Operator | Jun 2015 |
| 15 | Anadarko E&P Onshore LLC | Houston, TX 77046 | Oil & Gas Operator | May 2025 |
| 16 | Anadarko Petroleum Corporation | Houston, TX 77251 | Oil & Gas Operator | Mar 2025 |
| 17 | Apache Corporation | Houston, TX 77042 | Oil & Gas Operator | May 2025 |
| 18 | Apv McCamey LLC | MC Camey, TX 79752 | Oil & Gas Operator | May 2025 |
| 19 | Arch Oil & Gas, LLC | Dallas, TX 75254 | Oil & Gas Operator | May 2025 |
| 20 | Arco Oil & Gas Company | Plano, TX 75086 | Oil & Gas Operator | Mar 2006 |
| 21 | Armor Petroleum, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | May 2025 |
| 22 | Aroc (Texas) Inc | Houston, TX 77090 | Oil & Gas Operator | Dec 2014 |
| 23 | Atapco | Houston, TX 77040 | Oil & Gas Operator | Feb 1999 |
| 24 | Atlantic Operating II, LLC | Midland, TX 79702 | Oil & Gas Operator | May 2025 |
| 25 | Atlantic Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | Feb 2015 |
| 26 | Atlantic Resources Company, LLC | Houston, TX 77002 | Oil & Gas Operator | Oct 2019 |
| 27 | Atlas Operating LLC | Houston, TX 77056 | Oil & Gas Operator | May 2025 |
| 28 | Atropos Exploration Company | Dallas, TX 75225 | Oil & Gas Operator | May 2025 |
| 29 | Avad Operating, LLC | Dallas, TX 75201 | Oil & Gas Operator | May 2025 |
| 30 | B & B Operating Company | Odessa, TX 79760 | Oil & Gas Operator | May 2025 |
| 31 | Basic Energy Services, L.P. | Fort Worth, TX 76102 | Oil Operator | May 2025 |
| 32 | Bass Enterprises Production Co | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2006 |
| 33 | Baytech Inc | Midland, TX 79702 | Oil & Gas Operator | Aug 2003 |
| 34 | BC Operating, Inc. | Midland, TX 79710 | Oil & Gas Operator | May 2025 |
| 35 | BCP Resources, LLC | Midland, TX 79705 | Oil & Gas Operator | May 2025 |
| 36 | Beach Oil & Gas, Inc. | Lubbock, TX 79464 | Oil & Gas Operator | May 2025 |
| 37 | Bennett, M. Brad Inc. | Midland, TX 79710 | Oil & Gas Operator | Dec 2005 |
| 38 | Bennett, M. Brad LP | Midland, TX 79710 | Oil & Gas Operator | Jan 2006 |
| 39 | BHP Billiton Pet(Txla Op) Co | Denver, CO 80202 | Oil & Gas Operator | Jul 2019 |
| 40 | Black Gold Energy LLC | Jenks, OK 74037 | Oil Operator | Jun 2024 |
| 41 | Black Mountain Operating LLC | Fort Worth, TX 76102 | Oil & Gas Operator | May 2025 |
| 42 | Black Top Operating, LLC | Midland, TX 79706 | Oil & Gas Operator | May 2025 |
| 43 | Blanco Engineering Inc. | Artesia, NM 88210 | Oil & Gas Operator | Feb 1997 |
| 44 | Boaz Energy II Operating, LLC | Midland, TX 79705 | Oil & Gas Operator | May 2025 |
| 45 | Bold Operating, LLC | The Woodlands, TX 77381 | Oil & Gas Operator | May 2019 |
| 46 | Boyd, D. K. Oil And Gas Co.,Inc. | Midland, TX 79703 | Oil & Gas Operator | May 2025 |
| 47 | BPX Operating Company | Denver, CO 80202 | Oil & Gas Operator | May 2025 |
| 48 | Bracken Production Company | Midland, TX 79702 | Oil & Gas Operator | Oct 1995 |
| 49 | Brahaney Drilling Co. | Midland, TX 79702 | Oil & Gas Operator | Feb 2014 |
| 50 | Breck Operating Corp. | Breckenridge, TX 76424 | Oil & Gas Operator | Feb 2025 |
| 51 | Breitburn Operating LP | Houston, TX 77002 | Oil & Gas Operator | May 2025 |
| 52 | Bright & Company | The Colony, TX 75056 | Oil & Gas Operator | May 2015 |
| 53 | Bristol Resources Corporation | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2022 |
| 54 | Brothers Production Company Inc. | Midland, TX 79708 | Oil & Gas Operator | May 2025 |
| 55 | Brown, H. L., Jr. | Midland, TX 79702 | Oil & Gas Operator | May 2002 |
| 56 | Browning Oil Company, Inc. | Dallas, TX 75251 | Oil & Gas Operator | May 2025 |
| 57 | Bta Oil Producers | Midland, TX 79701 | Oil & Gas Operator | Sep 2009 |
| 58 | Bta Oil Producers, LLC | Midland, TX 79701 | Oil & Gas Operator | May 2025 |
| 59 | Burkholder, Terry L., Inc. | Pecos, TX 79772 | Oil & Gas Operator | Mar 2002 |
| 60 | Burlington Res O&G Co-Permian | Midland, TX 79702 | Oil & Gas Operator | May 2002 |
| 61 | Burlington Resources O&G | Midland, TX 79710-1810 | Oil & Gas Operator | Mar 1997 |
| 62 | Burlington Resources Oil And Gas Co. | Houston, TX 77210 | Oil & Gas Operator | Mar 2023 |
| 63 | Bustamante Resources LLC | Midland, TX 79710 | Oil & Gas Operator | May 2025 |
| 64 | Byler Drilling Company | Midland, TX 79702 | Oil & Gas Operator | May 2025 |
| 65 | C Oil Co. | New Braunfels, TX 78132 | Oil & Gas Operator | Feb 2017 |
| 66 | Callon Permian II, LLC | Houston, TX 77056 | Oil & Gas Operator | Jul 2024 |
| 67 | Callon Petroleum Operating Co | Houston, TX 77042 | Oil & Gas Operator | Jul 2024 |
| 68 | Capataz Operating Inc | Midland, TX 79702 | Oil & Gas Operator | Sep 2020 |
| 69 | Cardwell Oil Corporation | Midland, TX 79710 | Oil & Gas Operator | May 2025 |
| 70 | Celero Energy LP | Midland, TX 79701 | Oil & Gas Operator | May 2011 |
| 71 | Cex Operating Company | Dallas, TX 75206 | Oil & Gas Operator | Mar 2008 |
| 72 | Chance Properties Co. | Kermit, TX 79745 | Oil & Gas Operator | May 2025 |
| 73 | Chaparral (USA) Energy, Inc. | Oklahoma City, OK 73114 | Oil & Gas Operator | Sep 2002 |
| 74 | Chaparral Energy, L.L.C. | Oklahoma City, OK 73142 | Oil & Gas Operator | May 2025 |
| 75 | Chapman, Ford Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | Jan 1996 |
| 76 | Chase Avenue Corporation, The | Dallas, TX 75219 | Oil & Gas Operator | Jun 2003 |
| 77 | Chesapeake Operating, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Jan 2025 |
| 78 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | May 2025 |
| 79 | Cholla Petroleum Inc | Dallas, TX 75225 | Oil & Gas Operator | May 2025 |
| 80 | Cimarex Energy Co | Midland, TX 79706 | Oil & Gas Operator | May 2025 |
| 81 | Cimarex Energy Co. Of Colorado | Midland, TX 79706 | Oil & Gas Operator | May 2025 |
| 82 | Circle-S Energy, LLC | McKinney, TX 75071 | Oil & Gas Operator | May 2025 |
| 83 | Citation Oil & Gas Corp. | Houston, TX 77269 | Oil & Gas Operator | May 2025 |
| 84 | Civitas Permian Operating, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | May 2025 |
| 85 | Claude-Maggie Co. | Midland, TX 79702 | Oil & Gas Operator | May 2025 |
| 86 | Clear Fork, Incorporated | Abilene, TX 79604 | Oil & Gas Operator | May 2025 |
| 87 | CLR Secondary Recovery, LLC | Wichita Falls, TX 76306 | Oil & Gas Operator | May 2025 |
| 88 | CM TX Production, LLC | Lakewood, CO 80228 | Oil & Gas Operator | Feb 2023 |
| 89 | CML Exploration, LLC | Austin, TX 78746 | Oil & Gas Operator | May 2025 |
| 90 | Coastal Management Corporation | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 91 | Coastal Oil & Gas Corporation | Houston, TX 77252 | Oil & Gas Operator | Dec 2009 |
| 92 | COG Operating LLC | Midland, TX 79701 | Oil & Gas Operator | May 2025 |
| 93 | COG Production LLC | Midland, TX 79701 | Oil & Gas Operator | Mar 2025 |
| 94 | Colgate Operating, LLC | Midland, TX 79701 | Oil & Gas Operator | Apr 2024 |
| 95 | Concho Oil & Gas Corp. | Midland, TX 79701 | Oil & Gas Operator | May 2003 |
| 96 | Concho Resources Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2004 |
| 97 | Concorde Exploration, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Oct 1994 |
| 98 | Confed Oil Incorporated | Tulsa, OK 74103 | Oil & Gas Operator | Mar 2008 |
| 99 | Conoco Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 100 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | May 2025 |