| 1 | 3 S Production, Inc. | Cisco, TX 76437 | Oil & Gas Operator | Dec 2025 |
| 2 | 3-D Oil & Gas | Winters, TX 79567 | Oil & Gas Operator | Dec 2025 |
| 3 | 3-M Energy Corporation | San Angelo, TX 76902 | Oil & Gas Operator | Jun 2017 |
| 4 | Adams Branch Exploration Company | Abilene, TX 79608 | Oil & Gas Operator | Jul 2002 |
| 5 | Adventure Exploration PTRS, LLC | Midland, TX 79702 | Oil & Gas Operator | Aug 2012 |
| 6 | All-Southwest Petroleum, Inc. | Lubbock, TX 79424 | Oil & Gas Operator | Oct 1997 |
| 7 | Alps Oil Company | Odessa, TX 79760 | Oil & Gas Operator | Aug 1999 |
| 8 | Amerind Oil Company, LTD. | Midland, TX 79701 | Oil & Gas Operator | Nov 2004 |
| 9 | Anderson, James K. Inc. | Abilene, TX 79608 | Oil & Gas Operator | Dec 2025 |
| 10 | Antle Operating, Inc. | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 11 | Argee Oil Company | Midland, TX 79702 | Gas Operator | May 1994 |
| 12 | Armor Petroleum, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 2025 |
| 13 | Austral Oil Company Incorporated | Sulphur, LA 70663 | Oil & Gas Operator | Mar 2008 |
| 14 | B & G Energy Corporation | Dallas, TX 75214 | Oil & Gas Operator | Dec 2025 |
| 15 | B J Oil Company | Corsicana, TX 75109 | Oil & Gas Operator | Dec 2025 |
| 16 | Bam Production Company | Granbury, TX 76048 | Oil & Gas Operator | Aug 2003 |
| 17 | Baxter, Kelly H. | Austin, TX 78767 | Oil & Gas Operator | Mar 2008 |
| 18 | Baxter, Kelly H. Oil And Gas Co. | Austin, TX 78767 | Oil & Gas Operator | Nov 2010 |
| 19 | Bay Rock Operating Company | San Antonio, TX 78212 | Oil & Gas Operator | Dec 2025 |
| 20 | Bee-Jay Energy | Whiteface, TX 79379 | Oil & Gas Operator | Nov 1993 |
| 21 | Bee-Jay Petro, Inc. | Levelland, TX 79336 | Oil & Gas Operator | Jun 2024 |
| 22 | Benson & Schoen Oil Co., Inc. | Abilene, TX 79602 | Oil & Gas Operator | Apr 2012 |
| 23 | Best Petroleum Explorations,Inc. | Jacksboro, TX 76458 | Oil & Gas Operator | Dec 2025 |
| 24 | Bettis, Boyle & Stovall | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 25 | Big D Energy Company | New Braunfels, TX 78132 | Oil & Gas Operator | Dec 2025 |
| 26 | Big Run Production Company | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2025 |
| 27 | Bishop, E.J. | Winters, TX 79567 | Oil & Gas Operator | May 1997 |
| 28 | Black Resources, Inc. | Granbury, TX 76049 | Oil & Gas Operator | Mar 2008 |
| 29 | Blue River Inc. | Abilene, TX 79608 | Oil Operator | Dec 2025 |
| 30 | Bob Hughes Oil Company, LLC | San Angelo, TX 76901 | Oil & Gas Operator | Dec 2025 |
| 31 | Bowerman Energy Company | Arlington, TX 76004 | Oil & Gas Operator | Dec 2006 |
| 32 | Bowerman Exploration, Inc. | Fort Worth, TX 76116 | Oil & Gas Operator | Jan 2009 |
| 33 | Bowerman Investments Inc. | Arlington, TX 76003 | Oil & Gas Operator | Dec 2025 |
| 34 | Bowerman Oil & Gas, Inc. | Arlington, TX 76003 | Oil & Gas Operator | Dec 2025 |
| 35 | Boyd & McWilliams Energy Group | Midland, TX 79701 | Oil & Gas Operator | Dec 2025 |
| 36 | Boyd, Foy Management Corp. | Midland, TX 79702 | Oil & Gas Operator | Dec 2004 |
| 37 | BP Prod. Corp. | Richardson, TX 75083 | Oil & Gas Operator | Dec 2025 |
| 38 | Braman, D. H., Jr. | Victoria, TX 77901 | Oil & Gas Operator | Dec 2008 |
| 39 | Breck Operating Corp. | Breckenridge, TX 76424 | Oil & Gas Operator | Nov 2025 |
| 40 | Bridwell Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2025 |
| 41 | Buckeye Energy Inc | Midland, TX 79702 | Oil & Gas Operator | Dec 2018 |
| 42 | Bullet Development, LLC | Abilene, TX 79601 | Oil & Gas Operator | Dec 2025 |
| 43 | Burk Royalty Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Jan 2002 |
| 44 | Burns Operating | Wichita Falls, TX 76307 | Oil & Gas Operator | Sep 2002 |
| 45 | Bussey, Joe F. | Graham, TX 76450 | Oil & Gas Operator | Mar 2008 |
| 46 | C & A Enterprises | Ballinger, TX 76821 | Oil & Gas Operator | Dec 2025 |
| 47 | C R I Inc | Midland, TX 79702 | Oil & Gas Operator | Nov 1993 |
| 48 | Cabana Oil Corp. | Abilene, TX 79608 | Oil & Gas Operator | Feb 2006 |
| 49 | Canan Mowrey Operating, LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 2025 |
| 50 | Capataz Operating Inc | Midland, TX 79702 | Oil & Gas Operator | Sep 2020 |
| 51 | Caraway Operating Co. | San Angelo, TX 76902 | Oil & Gas Operator | Dec 2025 |
| 52 | Carr Exploration Corp. | Dallas, TX 75225 | Oil & Gas Operator | Aug 2003 |
| 53 | Cass Energy Corp | Dallas, TX 75225 | Oil & Gas Operator | Aug 2003 |
| 54 | Cazar Energy Inc | Austin, TX 78734 | Oil & Gas Operator | Dec 2025 |
| 55 | CCF, Inc. | Snyder, TX 79550 | Oil & Gas Operator | Apr 1998 |
| 56 | CDJ Oil Co. | Albany, TX 76430 | Oil & Gas Operator | Jul 2025 |
| 57 | Chief Oil & Gas LLC | Dallas, TX 75225 | Oil & Gas Operator | Feb 2022 |
| 58 | Chief Operating Company | Houston, TX 77070 | Oil & Gas Operator | Feb 2004 |
| 59 | Chiodo Corp. | San Antonio, TX 78232 | Oil & Gas Operator | Dec 2025 |
| 60 | Cholla Petroleum Inc | Dallas, TX 75225 | Oil & Gas Operator | Dec 2025 |
| 61 | Cimarron Properties, Inc. | San Angelo, TX 76904 | Oil & Gas Operator | Nov 1997 |
| 62 | Circle Ridge Production, Inc. | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 63 | Clark, John M. | Midland, TX 79701 | Oil & Gas Operator | Dec 1993 |
| 64 | Clark, John M., Inc. | Midland, TX 79704 | Oil & Gas Operator | Dec 2025 |
| 65 | Clayton Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | May 2004 |
| 66 | Coastline Operating, L.L.C. | Houston, TX 77027 | Oil & Gas Operator | Dec 2006 |
| 67 | Concho Oilfield Serv & Oper Co. | Eden, TX 76837 | Oil & Gas Operator | Dec 2025 |
| 68 | Conquistador Petroleum,Inc. | Coleman, TX 76834 | Oil & Gas Operator | Dec 2025 |
| 69 | Coquina Oil Corporation | Houston, TX 77227 | Oil & Gas Operator | Mar 2015 |
| 70 | Core Petro, LLC | Abilene, TX 79608 | Oil & Gas Operator | Dec 2025 |
| 71 | Cory, Kenneth W. | Bellaire, TX 77401 | Oil & Gas Operator | Mar 2012 |
| 72 | Cory, Kenneth W. LTD. | Bellaire, TX 77401 | Oil & Gas Operator | Dec 2025 |
| 73 | Couch, Harry L. | Odessa, TX 79762 | Oil & Gas Operator | Nov 1994 |
| 74 | Crown Petroleum Corp. | Oklahoma City, OK 73106 | Oil & Gas Operator | Dec 2025 |
| 75 | CTX Energy Corporation | Dallas, TX 75206 | Oil & Gas Operator | Aug 2003 |
| 76 | Dakota Resources, Inc. (I) | Midland, TX 79707 | Oil & Gas Operator | Dec 2025 |
| 77 | Damron Energy | Eden, TX 76837 | Oil & Gas Operator | Jan 2015 |
| 78 | Damron Energy, LLC | Eden, TX 76837 | Oil & Gas Operator | Dec 2025 |
| 79 | Daniel Explorations Inc | Georgetown, TX 78627 | Oil & Gas Operator | Apr 2009 |
| 80 | Daubert Operating, L.L.C. | San Antonio, TX 78209 | Oil Operator | Dec 2025 |
| 81 | Dbo Oil Incorporated | Georgetown, TX 78628 | Oil & Gas Operator | Dec 2025 |
| 82 | De Larios, R. V., LTD. | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 2025 |
| 83 | Delray Oil, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Dec 2025 |
| 84 | Devon Energy Corp (Nevada) | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2017 |
| 85 | Dinero Operating Co | Midland, TX 79702 | Oil & Gas Operator | Dec 2025 |
| 86 | Duncan Drilling Co. | Big Spring, TX 79721 | Oil & Gas Operator | Dec 2025 |
| 87 | Dune Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | Apr 1997 |
| 88 | Eagle Oil & Gas Co. | Dallas, TX 75225 | Oil & Gas Operator | Dec 2025 |
| 89 | El Ran, Inc. | Lubbock, TX 79408 | Oil & Gas Operator | Dec 2025 |
| 90 | Elco Oil & Gas | San Angelo, TX 76902 | Oil & Gas Operator | Dec 2014 |
| 91 | Elco Oil & Gas, Inc. | San Angelo, TX 76902 | Oil & Gas Operator | Dec 2025 |
| 92 | Ellsworth, H. P. O&G Properties | Corpus Chrsti, TX 78413 | Oil & Gas Operator | Dec 2025 |
| 93 | Energy Transfer Crude Marketing LLC | Dallas, TX 75225 | Oil Operator | Oct 2025 |
| 94 | Enrich Oil Corporation | Abilene, TX 79604 | Oil & Gas Operator | Dec 2025 |
| 95 | EOG Resources Inc | Midland, TX 79702 | Oil & Gas Operator | Dec 2025 |
| 96 | Esna Operating Co., Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | Oct 1994 |
| 97 | Expanding Energy Corporation | New Braunfels, TX 78132 | Oil & Gas Operator | Mar 2008 |
| 98 | Explo Oil, Inc. | Dallas, TX 75251 | Oil & Gas Operator | Dec 2025 |
| 99 | Faith Energy Exploration, Inc. | Ennis, TX 75119 | Oil & Gas Operator | Mar 2019 |
| 100 | Federal Oil, Inc. | Big Spring, TX 79721 | Oil & Gas Operator | Dec 2025 |