| 2801 | Dallas Royalty, Inc. | Jacksboro, TX 76458 | Oil & Gas Operator | Dec 2012 |
| 2802 | Dally'S Oil Co. LLC | Monahans, TX 79756 | Oil Operator | Sep 2026 |
| 2803 | Dalport Oil Corporation | Dallas, TX 75202 | Oil & Gas Operator | Apr 1993 |
| 2804 | Dameron Petroleum Corp. | Midland, TX 79708 | Oil & Gas Operator | Sep 2026 |
| 2805 | Damron Energy | Eden, TX 76837 | Oil & Gas Operator | Jan 2015 |
| 2806 | Damron Energy, LLC | Eden, TX 76837 | Oil & Gas Operator | Sep 2026 |
| 2807 | Dan A. Hughes Company, L.P. | San Antonio, TX 78212 | Oil & Gas Operator | Jun 2026 |
| 2808 | Dan Texas Company | Waco, TX 76710 | Oil & Gas Operator | Sep 1998 |
| 2809 | Danco Oil & Gas | White Deer, TX 79097 | Oil & Gas Operator | Aug 2013 |
| 2810 | Daniel Explorations Inc | Georgetown, TX 78627 | Oil & Gas Operator | Apr 2009 |
| 2811 | Daniel Mineral Development, Inc. | The Woodlands, TX 77380 | Oil & Gas Operator | Jun 2007 |
| 2812 | Daniel Oil & Gas | Granbury, TX 76049 | Oil & Gas Operator | Oct 2010 |
| 2813 | Daniels Corporation, The | Seabrook, TX 77586 | Oil & Gas Operator | Sep 2026 |
| 2814 | Daniels Energy | Pampa, TX 79066 | Oil & Gas Operator | Sep 2026 |
| 2815 | Daniels Petroleum Co | Denver, CO 80202 | Oil & Gas Operator | Mar 2003 |
| 2816 | Daniels, C. W. | Stockdale, TX 78160 | Oil & Gas Operator | Dec 2009 |
| 2817 | Daniels, Earlene | Follett, TX 79034 | Oil & Gas Operator | Feb 2002 |
| 2818 | Daniels, J.C. Energy | Pampa, TX 79066 | Oil & Gas Operator | Apr 2001 |
| 2819 | Danmark Energy Services, Inc. | White Oak, TX 75693 | Oil & Gas Operator | Apr 2021 |
| 2820 | Dantex Oil & Gas, Inc. | Dallas, TX 75225 | Oil & Gas Operator | Aug 2003 |
| 2821 | Dao Oil And Gas | Carrizo SPGS, TX 78834 | Oil & Gas Operator | Sep 2026 |
| 2822 | Dara Explorations, LLC | Albany, TX 76430 | Oil Operator | Sep 2026 |
| 2823 | Dara Operating Company, LLC | Electra, TX 76360 | Oil & Gas Operator | May 2026 |
| 2824 | Darco Operators | Big Lake, TX 76932 | Oil & Gas Operator | Sep 2026 |
| 2825 | Dark Canyon Resources LLC | Refugio, TX 78377 | Oil Operator | Sep 2026 |
| 2826 | Dark Horse Operating Co., L.L.C. | Denton, TX 76202 | Oil & Gas Operator | Oct 2022 |
| 2827 | Dark Horse Producing Of TX, L.P. | Alice, TX 78333 | Oil & Gas Operator | Sep 2026 |
| 2828 | Darkens Oil & Gas Inc. | MC Camey, TX 79752 | Oil & Gas Operator | Sep 2026 |
| 2829 | Darley Enterprises, Inc. | Brownwood, TX 76801 | Oil & Gas Operator | Jan 2012 |
| 2830 | Darr-Hey Oil, LLC | Iowa Park, TX 76367 | Oil & Gas Operator | Sep 2026 |
| 2831 | Darrah Oil Company, LLC | Wichita, KS 67201 | Oil & Gas Operator | Sep 2026 |
| 2832 | Darst Creek Oil Company | Lockhart, TX 78644 | Oil & Gas Operator | Mar 2021 |
| 2833 | Dart Oil & Gas Corporation | Mason, MI 48854 | Oil & Gas Operator | Jun 2018 |
| 2834 | Dartex Energy Corporation | Austin, TX 78731 | Oil & Gas Operator | Sep 2026 |
| 2835 | Dartex Energy Inc | Graham, TX 76450 | Oil & Gas Operator | Sep 2026 |
| 2836 | Das Oil Co. L.L.C. | Post, TX 79356 | Oil Operator | Sep 2026 |
| 2837 | Dasbek Energy, L.L.C. | Sugar Land, TX 77479 | Oil & Gas Operator | Sep 2026 |
| 2838 | Dash Production Company, Inc. | Corpus Christ, TX 78411 | Oil & Gas Operator | Sep 2026 |
| 2839 | Daubert Operating, L.L.C. | San Antonio, TX 78209 | Oil Operator | Sep 2026 |
| 2840 | Davco Oil LLC | Fort Worth, TX 76108 | Oil & Gas Operator | Sep 2026 |
| 2841 | Davcro Inc. | Lubbock, TX 79401 | Oil & Gas Operator | Dec 2003 |
| 2842 | Davenport Oil Company | Luling, TX 78648 | Oil & Gas Operator | Dec 1996 |
| 2843 | Davenport, Vernon | Shamrock, TX 79079 | Oil & Gas Operator | Mar 2008 |
| 2844 | Davenport, Vernon Prod. Co. | Dumas, TX 79029 | Oil & Gas Operator | Jan 2002 |
| 2845 | David, Phillip | Lawrenceville, IL 62439 | Oil & Gas Operator | Sep 2026 |
| 2846 | Davidson Production Company, LLC | Bertram, TX 78605 | Oil Operator | Sep 2026 |
| 2847 | Davidson, Dan | Ozona, TX 76943 | Oil & Gas Operator | Sep 2026 |
| 2848 | Davidson, Grover R. | Bertram, TX 78605 | Oil & Gas Operator | Sep 2026 |
| 2849 | Davis & Carr Energy Co. | Midland, TX 79702 | Oil & Gas Operator | Jun 1994 |
| 2850 | Davis & Davis Machine Shop, Inc. | Bowie, TX 76230 | Oil & Gas Operator | Sep 2026 |
| 2851 | Davis & Salmon | Muenster, TX 76252 | Oil & Gas Operator | Oct 2017 |
| 2852 | Davis Asset Management, Inc. | Houston, TX 77010 | Oil & Gas Operator | Dec 2004 |
| 2853 | Davis Bros. Oil Producers, Inc. | Tulsa, OK 74119 | Oil & Gas Operator | Apr 2020 |
| 2854 | Davis Energy Services LLC | La Grange, TX 78945 | Oil Operator | Sep 2026 |
| 2855 | Davis Enterprises | Abilene, TX 79608 | Oil & Gas Operator | Aug 1998 |
| 2856 | Davis Gulf Coast, Inc. | Tulsa, OK 74103 | Oil & Gas Operator | Sep 2026 |
| 2857 | Davis Oil & Gas, LLC | Shreveport, LA 71101 | Oil & Gas Operator | Jun 2011 |
| 2858 | Davis Operating Company | Elysian Field, TX 75642 | Oil & Gas Operator | Sep 2026 |
| 2859 | Davis Petroleum Corp. | Houston, TX 77027 | Oil & Gas Operator | Sep 2026 |
| 2860 | Davis Southern Operating Co LLC | Houston, TX 77004 | Oil & Gas Operator | Sep 2026 |
| 2861 | Davis William H | Tulsa, OK 74103 | Oil & Gas Operator | Apr 2014 |
| 2862 | Davis, A. L. Production Co.,Inc. | Van Vleck, TX 77482 | Oil & Gas Operator | Aug 2003 |
| 2863 | Davis, C. O. Production Co. | Bay City, TX 77414 | Oil & Gas Operator | Sep 2026 |
| 2864 | Davis, D. D. Estate Of | Borger, TX 79008 | Oil & Gas Operator | Jul 1998 |
| 2865 | Davis, Don Oil Co. | Nocona, TX 76255 | Oil & Gas Operator | Sep 2026 |
| 2866 | Davis, Gowin | Wichita Falls, TX 76308 | Oil & Gas Operator | Mar 2001 |
| 2867 | Davis, J. R. Oil Company | Sweeny, TX 77480 | Oil & Gas Operator | Sep 2026 |
| 2868 | Davis, Joe D. | Fort Smith, AR 72903 | Gas Operator | Mar 2015 |
| 2869 | Davis, Kelly J. | Muenster, TX 76252 | Oil Operator | Sep 2026 |
| 2870 | Davis, Larry D. | Boling, TX 77420 | Oil & Gas Operator | Sep 2026 |
| 2871 | Davis, Odis Oil Company | Nocona, TX 76255 | Oil & Gas Operator | Dec 2000 |
| 2872 | Davis, Paul Pipe & Supply Inc. | Abilene, TX 79606 | Oil & Gas Operator | Feb 2001 |
| 2873 | Davis, R. E. Oil & Gas, Inc. | Graham, TX 76450 | Oil & Gas Operator | Oct 2015 |
| 2874 | Davis, Randy | Perryton, TX 79070 | Oil & Gas Operator | Jun 2017 |
| 2875 | Davis, Robert E. | Graham, TX 76450 | Oil & Gas Operator | Apr 1997 |
| 2876 | Davis, Roland C. | Hardin, TX 77561 | Oil & Gas Operator | May 1997 |
| 2877 | Davis, Sammy | Albany, TX 76430 | Oil & Gas Operator | Sep 2026 |
| 2878 | Davis, Tommy | Hebbronville, TX 78361 | Oil & Gas Operator | Jun 1995 |
| 2879 | Davis, Travis H. | Spearman, TX 79081 | Oil & Gas Operator | Jul 2003 |
| 2880 | Davis, Travis H. Gas | Spearman, TX 79081 | Oil & Gas Operator | Sep 2026 |
| 2881 | Dawkins Energies, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Sep 2026 |
| 2882 | Dawn Oil & Gas Operators Inc. | Borger, TX 79007 | Oil & Gas Operator | Sep 2026 |
| 2883 | Dawsey Operating Company | Georgetown, TX 78628 | Oil & Gas Operator | Mar 2016 |
| 2884 | Dawson Energy, LLC | Midland, TX 79702 | Gas Operator | Sep 2026 |
| 2885 | Dawson Geophysical Company | Midland, TX 79701 | Oil Operator | Aug 2024 |
| 2886 | Dawson, B G Oil & Gas LTD | Dallas, TX 75205 | Oil & Gas Operator | Jul 2024 |
| 2887 | Dawson-Markwell Exploration Co. | Oklahoma City, OK 73101 | Oil & Gas Operator | May 2026 |
| 2888 | Day Resources, Inc. | Midland, TX 79707 | Oil & Gas Operator | Aug 1994 |
| 2889 | Daylight Petroleum LLC | Houston, TX 77052 | Oil & Gas Operator | Sep 2026 |
| 2890 | Daystar Operating Company, LLC | Austin, TX 78750 | Oil & Gas Operator | Apr 2008 |
| 2891 | DB Resources, LLC | Houston, TX 77002 | Oil & Gas Operator | Sep 2026 |
| 2892 | DBC Operating Company LLC | Midlothian, TX 76065 | Oil & Gas Operator | Sep 2026 |
| 2893 | Dbo Oil Incorporated | Georgetown, TX 78628 | Oil & Gas Operator | Sep 2026 |
| 2894 | DBP Exploration, Inc. | Pampa, TX 79065 | Oil & Gas Operator | Sep 2026 |
| 2895 | DBV Energy, LLC | Shiner, TX 77984 | Oil Operator | Sep 2026 |
| 2896 | DCB Oil & Gas, Inc. | Midland, TX 79707 | Oil & Gas Operator | Jan 1995 |
| 2897 | DCDC, Inc. | Midland, TX 79710 | Oil & Gas Operator | Jun 2003 |
| 2898 | DCM Resources, LLC | Humble, TX 77346 | Oil Operator | Sep 2026 |
| 2899 | DCP Midstream, LP | Denver, CO 80237 | Oil Operator | Nov 2006 |
| 2900 | DCP Operating Co LP | Houston, TX 77042 | Oil & Gas Operator | Feb 2026 |