| 2701 | Crimson Energy PTNRS III, L.L.C. | Fort Worth, TX 76102 | Oil & Gas Operator | Jul 2023 |
| 2702 | Crimson Exploration Inc. | Houston, TX 77060 | Oil & Gas Operator | Apr 2006 |
| 2703 | Crimson Exploration Oper., Inc. | Houston, TX 77002 | Oil & Gas Operator | Dec 2019 |
| 2704 | Crisis Oil Co., Inc. | Dallas, TX 75252 | Oil & Gas Operator | Jun 1995 |
| 2705 | Criterion Energy, Limited | Austin, TX 78737 | Gas Operator | Jan 2003 |
| 2706 | CRJ Bond Operations, LLC | Graham, TX 76450 | Oil Operator | Feb 2026 |
| 2707 | CRM Energy, Inc. | Oklahoma City, OK 73101 | Oil & Gas Operator | Feb 2026 |
| 2708 | Crocker Oil Company | Windthorst, TX 76389 | Oil & Gas Operator | Aug 1999 |
| 2709 | Crockett Operating, LLC | Arlington, TX 76017 | Oil & Gas Operator | Feb 2026 |
| 2710 | Crockett Operting, LLC | Arlington, TX 76013 | Oil & Gas Operator | Oct 2020 |
| 2711 | Croker, Danny | Wichita Falls, TX 76302 | Oil & Gas Operator | Feb 2026 |
| 2712 | Cromeens Petroleum, Inc. | Mineral Wells, TX 76067 | Oil & Gas Operator | Sep 1996 |
| 2713 | Crone Oil Company | Gruver, TX 79040 | Oil & Gas Operator | Feb 2026 |
| 2714 | Cross Creek Energy LLC | Houston, TX 77074 | Oil & Gas Operator | Aug 2013 |
| 2715 | Cross Cut Petroleum, LLC | Abilene, TX 79602 | Oil Operator | Feb 2026 |
| 2716 | Cross Timbers Energy, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 2026 |
| 2717 | Cross Timbers Oil Company | Dallas, TX 75284 | Oil & Gas Operator | May 2013 |
| 2718 | Cross Timbers Operating Company | Fort Worth, TX 76102 | Oil & Gas Operator | Sep 2025 |
| 2719 | Cross Winds Oil & Gas, LLC | Gruver, TX 79040 | Gas Operator | Feb 2026 |
| 2720 | Crossbow Resources, LLC | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 2721 | Crossfoot Operating, LLC | Houston, TX 77227 | Oil & Gas Operator | Feb 2026 |
| 2722 | Crossing Rocks Energy, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2018 |
| 2723 | Crossland Oil & Gas | Dallas, TX 75205 | Oil & Gas Operator | Aug 1994 |
| 2724 | Crosspoint Energy Company | Dallas, TX 75205 | Oil & Gas Operator | Oct 2007 |
| 2725 | Crossroads Energy L.P. | Houston, TX 77064 | Oil & Gas Operator | Jun 2011 |
| 2726 | Crossroads Energy Partners, LLC | Houston, TX 77070 | Oil & Gas Operator | Mar 2018 |
| 2727 | Crossroads Mineral Prod., L.L.C. | Seguin, TX 78155 | Oil Operator | Feb 2026 |
| 2728 | Crossroads Operating, LLC | Midland, TX 79705 | Oil & Gas Operator | Feb 2026 |
| 2729 | Crossroads Petroleum L.L.C. | San Benito, TX 78586 | Oil & Gas Operator | Feb 2026 |
| 2730 | Crossroads Vacuum & Weld. Serv. | Luling, TX 78648 | Oil Operator | Mar 2010 |
| 2731 | Crosstex Services, L.L.C. | Tuscola, TX 79562 | Oil Operator | Feb 2026 |
| 2732 | Crouch Petroleum Company | Amarillo, TX 79110 | Oil & Gas Operator | Mar 2015 |
| 2733 | Crouch, Eugene Louis | Lockhart, TX 78644 | Oil & Gas Operator | Apr 1999 |
| 2734 | Crow Creek Operating Co II LLC | Houston, TX 77252 | Oil & Gas Operator | Jul 2011 |
| 2735 | Crow, David | Shreveport, LA 71106 | Oil & Gas Operator | May 2001 |
| 2736 | Crown Energy Company | Oklahoma City, OK 73106 | Oil & Gas Operator | Nov 2025 |
| 2737 | Crown Equipment Co. | Weatherford, TX 76086 | Oil & Gas Operator | Feb 2026 |
| 2738 | Crown Petroleum Corp. | Oklahoma City, OK 73106 | Oil & Gas Operator | Feb 2026 |
| 2739 | Crownquest Operating, LLC | Midland, TX 79710 | Oil & Gas Operator | Feb 2026 |
| 2740 | Crozier & Company | Tyler, TX 75703 | Oil & Gas Operator | Jan 2020 |
| 2741 | CRT'S, Inc. | Abilene, TX 79605 | Oil & Gas Operator | Aug 2008 |
| 2742 | Crude Operators, L.L.C. | Pampa, TX 79066 | Oil & Gas Operator | Feb 2026 |
| 2743 | Crude Production Company | Clyde, TX 79510 | Oil & Gas Operator | Feb 2026 |
| 2744 | Crude Resources, Inc. | Carrollton, TX 75011 | Oil & Gas Operator | Mar 2008 |
| 2745 | Crump Operating | Henrietta, TX 76365 | Oil & Gas Operator | Feb 2026 |
| 2746 | Crusader Energy Corporation | Oklahoma City, OK 73102 | Oil & Gas Operator | Sep 2011 |
| 2747 | Crusader Energy Group Inc. | Austin, TX 78746 | Oil & Gas Operator | Mar 2015 |
| 2748 | Crusader Energy Group LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Mar 2015 |
| 2749 | Crusader Energy II LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2015 |
| 2750 | Crusader Resources LC | Sugar Land, TX 77479 | Oil Operator | Feb 2026 |
| 2751 | Crutcher Oil Properties | Wichita Falls, TX 76301 | Oil & Gas Operator | Feb 2026 |
| 2752 | Cruthird, Mark Oil | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2026 |
| 2753 | Crystal Oil Company | Shreveport, LA 71120 | Oil & Gas Operator | Jul 1995 |
| 2754 | Crystal River Oil & Gas LLC | Snowmass VLG., CO 81615 | Oil & Gas Operator | Jan 2023 |
| 2755 | Csa Exploration Company, Inc. | Houston, TX 77027 | Oil & Gas Operator | Aug 2003 |
| 2756 | CSL Exploration, LP | Houston, TX 77002 | Oil & Gas Operator | Apr 2018 |
| 2757 | Cso Consulting | Bridgeport, TX 76426 | Oil & Gas Operator | Mar 2020 |
| 2758 | CT Adams Jr., LLC | Schulenburg, TX 78956 | Oil Operator | Feb 2026 |
| 2759 | CTC Oil Co., Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Feb 2026 |
| 2760 | CTL Oil & Gas Corporation | Buchanan Dam, TX 78609 | Oil & Gas Operator | Nov 2020 |
| 2761 | CTL Production, Inc. | Muenster, TX 76252 | Oil & Gas Operator | Feb 2026 |
| 2762 | CTR Petroleum, Inc. | Corpus Chrsti, TX 78414 | Oil & Gas Operator | Mar 2015 |
| 2763 | CTX Energy Corporation | Dallas, TX 75206 | Oil & Gas Operator | Aug 2003 |
| 2764 | Cuatro Oil And Gas Corporation | Abilene, TX 79603 | Oil & Gas Operator | Feb 2026 |
| 2765 | Cuatro Petro Corp. | Richardson, TX 75080 | Oil & Gas Operator | Feb 2026 |
| 2766 | Cuba, John H. | Olney, TX 76374 | Oil Operator | Feb 2026 |
| 2767 | Cucharas Oil & Gas Company | Dallas, TX 75225 | Oil & Gas Operator | Dec 2000 |
| 2768 | Cuervo Resources, Inc. | FT Stockton, TX 79735 | Oil & Gas Operator | Oct 1996 |
| 2769 | Cuervo, Inc. | FT Stockton, TX 79735 | Oil & Gas Operator | Feb 2026 |
| 2770 | Culebra Oil & Gas Company | Dallas, TX 75225 | Oil & Gas Operator | Dec 2000 |
| 2771 | Culebra Oil & Gas, LLC | Kerrville, TX 78028 | Oil & Gas Operator | Feb 2026 |
| 2772 | Culoco, Inc. | Dallas, TX 75374 | Oil & Gas Operator | Nov 2024 |
| 2773 | Culver & Cain Production LLC | Tyler, TX 75711 | Oil & Gas Operator | Feb 2026 |
| 2774 | Cumberland Petroleum, Inc. II | Weatherford, TX 76086 | Oil & Gas Operator | May 1997 |
| 2775 | Cumming Company, Inc. The | Fort Worth, TX 76116 | Oil & Gas Operator | Feb 2026 |
| 2776 | Cummings, C. M. Oil & Gas | Lewisville, TX 75029 | Oil & Gas Operator | Nov 1993 |
| 2777 | Cummins & Walker Oil Co., Inc. | Austin, TX 78746 | Oil & Gas Operator | Jan 2021 |
| 2778 | Cundiff Operating Company | Dallas, TX 75238 | Oil & Gas Operator | Feb 2026 |
| 2779 | Curmar Producers | Adairsville, GA 30103 | Oil Operator | Mar 2008 |
| 2780 | Currie Cattle Co. | Big Spring, TX 79720 | Oil & Gas Operator | Sep 2007 |
| 2781 | Curzac Oil And Gas, LLC | Texarkana, TX 75503 | Oil & Gas Operator | Feb 2026 |
| 2782 | Cusack, Michael F. | Austin, TX 78768 | Gas Operator | Jun 2011 |
| 2783 | Custer & Wright Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | Feb 2026 |
| 2784 | Cutbow Operating, LLC | Midland, TX 79705 | Oil & Gas Operator | Feb 2026 |
| 2785 | Cuyahoga Expl. & Devel. Corp. | Jericho, NY 11753 | Oil & Gas Operator | Dec 1996 |
| 2786 | CVR Supply & Trading, LLC | Sugar Land, TX 77479 | Oil & Gas Operator | Apr 2024 |
| 2787 | CVS Operating, LLC. | Plano, TX 75074 | Oil & Gas Operator | Feb 2026 |
| 2788 | CVS Production, LLC. | Plano, TX 75074 | Oil Operator | Feb 2026 |
| 2789 | CW Dalcan Management SVCS, LTD. | Frisco, TX 75033 | Oil Operator | Feb 2026 |
| 2790 | CWC Oil & Gas, LLC | Abilene, TX 79608 | Oil & Gas Operator | Feb 2026 |
| 2791 | CWD Resources, LLC | Kilgore, TX 75663 | Oil Operator | Feb 2026 |
| 2792 | CWF Energy, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Jul 1997 |
| 2793 | Cwic, Inc. | Granbury, TX 76049 | Oil & Gas Operator | Feb 2026 |
| 2794 | Cwo Energy, LLC | Midland, TX 79705 | Oil Operator | Feb 2026 |
| 2795 | Cwoc | Big Spring, TX 79721 | Oil & Gas Operator | Feb 2026 |
| 2796 | CWS Aceite Operating, Inc. | Cotulla, TX 78014 | Oil & Gas Operator | Aug 2018 |
| 2797 | CX Operating LLC | Dallas, TX 75238 | Oil & Gas Operator | Feb 2026 |
| 2798 | CXL Energy LLC | Canada, 00100 | Oil & Gas Operator | Feb 2026 |
| 2799 | Cxy Energy, Inc. | Dallas, TX 75251 | Oil & Gas Operator | Nov 2000 |
| 2800 | Cyber Enviro-Tech Inc | San Tan Valley, AZ 85144 | Oil & Gas Operator | Feb 2026 |