| 2901 | Dameron Petroleum Corp. | Midland, TX 79708 | Oil & Gas Operator | Feb 2026 |
| 2902 | Damron Energy | Eden, TX 76837 | Oil & Gas Operator | Jan 2015 |
| 2903 | Damron Energy, LLC | Eden, TX 76837 | Oil & Gas Operator | Feb 2026 |
| 2904 | Dan A. Hughes Company, L.P. | Beeville, TX 78104 | Oil & Gas Operator | Dec 2025 |
| 2905 | Dan Texas Company | Waco, TX 76710 | Oil & Gas Operator | Sep 1998 |
| 2906 | Danco Oil & Gas | White Deer, TX 79097 | Oil & Gas Operator | Aug 2013 |
| 2907 | Daniel Explorations Inc | Georgetown, TX 78627 | Oil & Gas Operator | Apr 2009 |
| 2908 | Daniel Mineral Development, Inc. | The Woodlands, TX 77380 | Oil & Gas Operator | Jun 2007 |
| 2909 | Daniel Oil & Gas | Granbury, TX 76049 | Oil & Gas Operator | Oct 2010 |
| 2910 | Daniels Corporation, The | Seabrook, TX 77586 | Oil & Gas Operator | Feb 2026 |
| 2911 | Daniels Energy | Pampa, TX 79066 | Oil & Gas Operator | Feb 2026 |
| 2912 | Daniels Petroleum Co | Denver, CO 80202 | Oil & Gas Operator | Mar 2003 |
| 2913 | Daniels, C. W. | Stockdale, TX 78160 | Oil & Gas Operator | Dec 2009 |
| 2914 | Daniels, Earlene | Follett, TX 79034 | Oil & Gas Operator | Feb 2002 |
| 2915 | Daniels, J.C. Energy | Pampa, TX 79066 | Oil & Gas Operator | Apr 2001 |
| 2916 | Danmark Energy Services, Inc. | White Oak, TX 75693 | Oil & Gas Operator | Apr 2021 |
| 2917 | Dantex Oil & Gas, Inc. | Dallas, TX 75225 | Oil & Gas Operator | Aug 2003 |
| 2918 | Dao Oil And Gas | Carrizo SPGS, TX 78834 | Oil & Gas Operator | Feb 2026 |
| 2919 | Dara Operating Company, LLC | Electra, TX 76360 | Oil & Gas Operator | Feb 2026 |
| 2920 | Darco Operators | Big Lake, TX 76932 | Oil & Gas Operator | Feb 2026 |
| 2921 | Dark Canyon Resources LLC | Refugio, TX 78377 | Oil Operator | Feb 2026 |
| 2922 | Dark Horse Operating Co., L.L.C. | Denton, TX 76202 | Oil & Gas Operator | Oct 2022 |
| 2923 | Dark Horse Producing Of TX, L.P. | Alice, TX 78333 | Oil & Gas Operator | Feb 2026 |
| 2924 | Darkens Oil & Gas Inc. | MC Camey, TX 79752 | Oil & Gas Operator | Feb 2026 |
| 2925 | Darley Enterprises, Inc. | Brownwood, TX 76801 | Oil & Gas Operator | Jan 2012 |
| 2926 | Darr-Hey Oil, LLC | Iowa Park, TX 76367 | Oil & Gas Operator | Feb 2026 |
| 2927 | Darrah Oil Company, LLC | Wichita, KS 67201 | Oil & Gas Operator | Feb 2026 |
| 2928 | Darst Creek Oil Company | Lockhart, TX 78644 | Oil & Gas Operator | Mar 2021 |
| 2929 | Dart Oil & Gas Corporation | Mason, MI 48854 | Oil & Gas Operator | Jun 2018 |
| 2930 | Dartex Energy Corporation | Austin, TX 78731 | Oil & Gas Operator | Feb 2026 |
| 2931 | Dartex Energy Inc | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 2932 | Das Oil Co. L.L.C. | Post, TX 79356 | Oil Operator | Feb 2026 |
| 2933 | Dasbek Energy, L.L.C. | Sugar Land, TX 77479 | Oil & Gas Operator | Feb 2026 |
| 2934 | Dash Production Company, Inc. | Corpus Chrsti, TX 78411 | Oil & Gas Operator | Feb 2026 |
| 2935 | Daubert Operating, L.L.C. | San Antonio, TX 78209 | Oil Operator | Feb 2026 |
| 2936 | Davco Oil LLC | Fort Worth, TX 76108 | Oil & Gas Operator | Feb 2026 |
| 2937 | Davcro Inc. | Lubbock, TX 79401 | Oil & Gas Operator | Dec 2003 |
| 2938 | Davenport Oil Company | Luling, TX 78648 | Oil & Gas Operator | Dec 1996 |
| 2939 | Davenport, Vernon | Shamrock, TX 79079 | Oil & Gas Operator | Mar 2008 |
| 2940 | Davenport, Vernon Prod. Co. | Dumas, TX 79029 | Oil & Gas Operator | Jan 2002 |
| 2941 | David, Phillip | Lawrenceville, IL 62439 | Oil & Gas Operator | Feb 2026 |
| 2942 | Davidson Production Company, LLC | Bertram, TX 78605 | Oil Operator | Feb 2026 |
| 2943 | Davidson, Dan | Ozona, TX 76943 | Oil & Gas Operator | Feb 2026 |
| 2944 | Davidson, Grover R. | Bertram, TX 78605 | Oil & Gas Operator | Feb 2026 |
| 2945 | Davis & Carr Energy Co. | Midland, TX 79702 | Oil & Gas Operator | Jun 1994 |
| 2946 | Davis & Davis Machine Shop, Inc. | Bowie, TX 76230 | Oil & Gas Operator | Feb 2026 |
| 2947 | Davis & Salmon | Muenster, TX 76252 | Oil & Gas Operator | Oct 2017 |
| 2948 | Davis Asset Management, Inc. | Houston, TX 77010 | Oil & Gas Operator | Dec 2004 |
| 2949 | Davis Bros. Oil Producers, Inc. | Tulsa, OK 74119 | Oil & Gas Operator | Apr 2020 |
| 2950 | Davis Energy Services LLC | La Grange, TX 78945 | Oil Operator | Feb 2026 |
| 2951 | Davis Enterprises | Abilene, TX 79608 | Oil & Gas Operator | Aug 1998 |
| 2952 | Davis Gulf Coast, Inc. | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2026 |
| 2953 | Davis Oil & Gas, LLC | Shreveport, LA 71101 | Oil & Gas Operator | Jun 2011 |
| 2954 | Davis Operating Company | Elysian Field, TX 75642 | Oil & Gas Operator | Feb 2026 |
| 2955 | Davis Petroleum Corp. | Houston, TX 77027 | Oil & Gas Operator | Feb 2026 |
| 2956 | Davis Preservation Oil Trust | Denver, CO 80206 | Gas Operator | Mar 1998 |
| 2957 | Davis Southern Operating Co LLC | Houston, TX 77004 | Oil & Gas Operator | Feb 2026 |
| 2958 | Davis William H | Tulsa, OK 74103 | Oil & Gas Operator | Apr 2014 |
| 2959 | Davis, A. L. Production Co.,Inc. | Van Vleck, TX 77482 | Oil & Gas Operator | Aug 2003 |
| 2960 | Davis, C. O. Production Co. | Bay City, TX 77414 | Oil & Gas Operator | Feb 2026 |
| 2961 | Davis, D. D. Estate Of | Borger, TX 79008 | Oil & Gas Operator | Jul 1998 |
| 2962 | Davis, Don Oil Co. | Nocona, TX 76255 | Oil & Gas Operator | Feb 2026 |
| 2963 | Davis, Gowin | Wichita Falls, TX 76308 | Oil & Gas Operator | Mar 2001 |
| 2964 | Davis, J. R. Oil Company | Sweeny, TX 77480 | Oil & Gas Operator | Feb 2026 |
| 2965 | Davis, Joe D. | Fort Smith, AR 72903 | Gas Operator | Mar 2015 |
| 2966 | Davis, Kelly J. | Muenster, TX 76252 | Oil Operator | Feb 2026 |
| 2967 | Davis, Larry D. | Boling, TX 77420 | Oil & Gas Operator | Feb 2026 |
| 2968 | Davis, Odis Oil Company | Nocona, TX 76255 | Oil & Gas Operator | Dec 2000 |
| 2969 | Davis, Paul Pipe & Supply Inc. | Abilene, TX 79606 | Oil & Gas Operator | Feb 2001 |
| 2970 | Davis, R. E. Oil & Gas, Inc. | Graham, TX 76450 | Oil & Gas Operator | Oct 2015 |
| 2971 | Davis, Randy | Perryton, TX 79070 | Oil & Gas Operator | Jun 2017 |
| 2972 | Davis, Robert E. | Graham, TX 76450 | Oil & Gas Operator | Apr 1997 |
| 2973 | Davis, Roland C. | Hardin, TX 77561 | Oil & Gas Operator | May 1997 |
| 2974 | Davis, Sammy | Albany, TX 76430 | Oil & Gas Operator | Feb 2026 |
| 2975 | Davis, Tommy | Hebbronville, TX 78361 | Oil & Gas Operator | Jun 1995 |
| 2976 | Davis, Travis H. | Spearman, TX 79081 | Oil & Gas Operator | Jul 2003 |
| 2977 | Davis, Travis H. Gas | Spearman, TX 79081 | Oil & Gas Operator | Feb 2026 |
| 2978 | Dawkins Energies, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Feb 2026 |
| 2979 | Dawn Oil & Gas Operators Inc. | Borger, TX 79007 | Oil & Gas Operator | Feb 2026 |
| 2980 | Dawsey Operating Company | Georgetown, TX 78628 | Oil & Gas Operator | Mar 2016 |
| 2981 | Dawson Geophysical Company | Midland, TX 79701 | Oil Operator | Aug 2024 |
| 2982 | Dawson Operating Company | Midland, TX 79702 | Oil & Gas Operator | Dec 1994 |
| 2983 | Dawson, B G Oil & Gas LTD | Dallas, TX 75205 | Oil & Gas Operator | Jul 2024 |
| 2984 | Dawson-Markwell Exploration Co. | Oklahoma City, OK 73101 | Oil & Gas Operator | Nov 2025 |
| 2985 | Day Resources, Inc. | Midland, TX 79707 | Oil & Gas Operator | Aug 1994 |
| 2986 | Daylight Petroleum LLC | Houston, TX 77052 | Oil & Gas Operator | Feb 2026 |
| 2987 | Daystar Operating Company, LLC | Austin, TX 78750 | Oil & Gas Operator | Apr 2008 |
| 2988 | DB Resources, LLC | Houston, TX 77019 | Oil & Gas Operator | Feb 2026 |
| 2989 | DBC Operating Company LLC | Midlothian, TX 76065 | Oil & Gas Operator | Feb 2026 |
| 2990 | Dbo Oil Incorporated | Georgetown, TX 78628 | Oil & Gas Operator | Feb 2026 |
| 2991 | DBP Exploration, Inc. | Pampa, TX 79065 | Oil & Gas Operator | Feb 2026 |
| 2992 | DCDC, Inc. | Midland, TX 79710 | Oil & Gas Operator | Jun 2003 |
| 2993 | DCP Midstream, LP | Denver, CO 80237 | Oil Operator | Nov 2006 |
| 2994 | DCP Operating Co LP | Houston, TX 77042 | Oil & Gas Operator | Nov 2025 |
| 2995 | DCS Energy | Throckmorton, TX 76483 | Oil Operator | Feb 2026 |
| 2996 | DDC Energy Corporation | Marietta, GA 30068 | Oil & Gas Operator | Mar 1997 |
| 2997 | DDC Production Company | Archer City, TX 76351 | Oil Operator | Feb 2026 |
| 2998 | DDC Track, LLC | Bushland, TX 79012 | Oil Operator | Feb 2026 |
| 2999 | DDD Energy, Inc. | Houston, TX 77027 | Oil & Gas Operator | Jul 2002 |
| 3000 | DDD Exploration, Inc. | Amarillo, TX 79109 | Oil & Gas Operator | Feb 2026 |