| 6701 | Crimson Exploration Inc. | Houston, TX 77060 | Oil & Gas Operator | Apr 2006 |
| 6702 | Crimson Exploration Oper., Inc. | Houston, TX 77002 | Oil & Gas Operator | Dec 2019 |
| 6703 | Crimson Resource Management Corp. | | Oil & Gas Operator | Feb 2026 |
| 6704 | Crimson Resources, LLC | Tulsa, OK 74133 | Oil Operator | Jul 2007 |
| 6705 | Cris Oil | | Oil Operator | Nov 2025 |
| 6706 | Crisis Oil Co., Inc. | Dallas, TX 75252 | Oil & Gas Operator | Jun 1995 |
| 6707 | Crissinger Robert A Inc | Strongsville, OH 44136 | Oil & Gas Operator | Dec 2003 |
| 6708 | Criswell E. White | | Gas Operator | Jun 2015 |
| 6709 | Criswell Energy LLC | Montezuma, IA 50171-8500 | Oil & Gas Operator | Oct 2022 |
| 6710 | Criteria Petrole | | Oil Operator | Sep 1996 |
| 6711 | Criterion Energy, Limited | Austin, TX 78737 | Gas Operator | Jan 2003 |
| 6712 | CRJ Bond Operations, LLC | Graham, TX 76450 | Oil Operator | Jun 2026 |
| 6713 | CRM Energy Partners | | Oil & Gas Operator | Apr 2026 |
| 6714 | CRM Energy, Inc. | Oklahoma City, OK 73101 | Oil & Gas Operator | Jun 2026 |
| 6715 | Crocker Oil Company | Windthorst, TX 76389 | Oil & Gas Operator | Aug 1999 |
| 6716 | Crockett Oil And Gas, Inc. | Sharon, KS 67138 | Oil & Gas Operator | Jun 2006 |
| 6717 | Crockett Operating, LLC | Arlington, TX 76017 | Oil & Gas Operator | Jun 2026 |
| 6718 | Crockett Operting, LLC | Arlington, TX 76013 | Oil & Gas Operator | Oct 2020 |
| 6719 | Croft Petroleum Co. | Cut Bank, MT 59427 | Oil & Gas Operator | Dec 2022 |
| 6720 | Croker, Danny | Wichita Falls, TX 76302 | Oil & Gas Operator | Jun 2026 |
| 6721 | Cromeens Petroleum, Inc. | Mineral Wells, TX 76067 | Oil & Gas Operator | Sep 1996 |
| 6722 | Cromer Carroll Oil & Gas LLC | Kalispell, MT 59901 | Oil & Gas Operator | Feb 2026 |
| 6723 | Crone Oil Company | Gruver, TX 79040 | Oil & Gas Operator | Jun 2026 |
| 6724 | Cronus Exploration Co LLC | | Oil & Gas Operator | May 2026 |
| 6725 | Crooch John | Okmulgee, OK 74447 | Oil Operator | Mar 2026 |
| 6726 | Crook-Woodlin Expl.,Inc. | | Oil Operator | Feb 1988 |
| 6727 | Crosbys Creek Oil & Gas, LLC | Ridgeland, MS 39157 | Oil & Gas Operator | Mar 2026 |
| 6728 | Cross And Cross | Overland Park, KS 66214 | Oil Operator | Sep 1997 |
| 6729 | Cross Bar Energy, LLC | Wichita, KS 67206 | Oil Operator | Feb 2026 |
| 6730 | Cross Bar Petrol | | Oil Operator | Aug 1995 |
| 6731 | Cross Bar Petroleum, Inc. | Wichita, KS 67205 | Oil & Gas Operator | Jun 2016 |
| 6732 | Cross Border Resources, Inc. | Dallas, TX 75235 | Oil & Gas Operator | Jan 2022 |
| 6733 | Cross Creek Corporation | Duncan, OK 73534 | Oil & Gas Operator | Mar 1999 |
| 6734 | Cross Creek Energy LLC | Houston, TX 77074 | Oil & Gas Operator | Aug 2013 |
| 6735 | Cross Cut Petroleum, LLC | Abilene, TX 79602 | Oil & Gas Operator | Jun 2026 |
| 6736 | Cross Development Co. | | Oil Operator | Dec 1989 |
| 6737 | Cross Development-MMHS PRTSHP. | | Oil Operator | May 1987 |
| 6738 | Cross Development1984-1 PRTSHP | | Oil & Gas Operator | Sep 1990 |
| 6739 | Cross Don | Cushing, OK 74023-6316 | Oil & Gas Operator | Dec 2025 |
| 6740 | Cross Timbers Energy, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2026 |
| 6741 | Cross Timbers Oil Company | Dallas, TX 75284 | Oil & Gas Operator | May 2013 |
| 6742 | Cross Timbers Op | | Oil & Gas Operator | Nov 1996 |
| 6743 | Cross Timbers Operating Company | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 2026 |
| 6744 | Cross Timbers Production Co | Oklahoma City, OK 73102-5605 | Oil & Gas Operator | Mar 2005 |
| 6745 | Cross Winds Oil & Gas, LLC | Gruver, TX 79040 | Gas Operator | Jun 2026 |
| 6746 | Cross, Don E | | Oil & Gas Operator | Jan 2013 |
| 6747 | Crossbow Resources, LLC | Graham, TX 76450 | Oil & Gas Operator | Jun 2026 |
| 6748 | Crossfield Larry | | Oil & Gas Operator | Sep 1993 |
| 6749 | Crossfoot Operating, LLC | Houston, TX 77227 | Oil & Gas Operator | Jun 2026 |
| 6750 | Crossing Rocks Energy, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2018 |
| 6751 | Crossland Oil & Gas | Dallas, TX 75205 | Oil & Gas Operator | Aug 1994 |
| 6752 | Crossley, Patricia J. | Kennedy, NY 14747 | Gas Operator | Dec 2024 |
| 6753 | Crosspoint Energy Company | Dallas, TX 75205 | Oil & Gas Operator | Oct 2007 |
| 6754 | Crossroads Energy Development, LLC | | Oil Operator | Mar 2018 |
| 6755 | Crossroads Energy L.P. | Houston, TX 77064 | Oil & Gas Operator | Jun 2011 |
| 6756 | Crossroads Energy Partners, LLC | Houston, TX 77070 | Oil & Gas Operator | Mar 2018 |
| 6757 | Crossroads Mineral Prod., L.L.C. | Seguin, TX 78155 | Oil Operator | Jun 2026 |
| 6758 | Crossroads Operating, LLC | Midland, TX 79705 | Oil & Gas Operator | Jun 2026 |
| 6759 | Crossroads Petroleum L.L.C. | San Benito, TX 78586 | Oil & Gas Operator | Jun 2026 |
| 6760 | Crossroads Vacuum & Weld. Serv. | Luling, TX 78648 | Oil Operator | Mar 2010 |
| 6761 | Crosstex Lig, LLC | | Oil Operator | Mar 2014 |
| 6762 | Crosstex Processing SVCS, LLC | | Oil Operator | Mar 2014 |
| 6763 | Crosstex Services, L.L.C. | Tuscola, TX 79562 | Oil Operator | Jun 2026 |
| 6764 | Crosstex Treating Services, L.P. | | Oil Operator | Sep 2009 |
| 6765 | Crouch Petroleum Company | Amarillo, TX 79110 | Oil & Gas Operator | Mar 2015 |
| 6766 | Crouch, Eugene Louis | Lockhart, TX 78644 | Oil & Gas Operator | Apr 1999 |
| 6767 | Crow Creek Operating Co II LLC | Houston, TX 77252 | Oil & Gas Operator | Jul 2011 |
| 6768 | Crow Creek Operating Co III LLC | Tulsa, OK 74137-8432 | Oil & Gas Operator | Apr 2015 |
| 6769 | Crow Oil LLC | Tulsa, OK 74133-2914 | Oil & Gas Operator | Sep 2019 |
| 6770 | Crow, David | Shreveport, LA 71106 | Oil & Gas Operator | May 2001 |
| 6771 | Crow, Donald | Gerry, NY 14740 | Gas Operator | Dec 2024 |
| 6772 | Crow-Eason | | Oil & Gas Operator | Feb 1984 |
| 6773 | Crow-Gulf Coast Venture | | Oil & Gas Operator | Aug 1985 |
| 6774 | Crow-Pittman | | Oil Operator | Aug 1993 |
| 6775 | Crowder Oil Co. | | Oil Operator | Sep 2008 |
| 6776 | Crowder Oil L.L.C. | | Oil Operator | Apr 2015 |
| 6777 | Crowe Drilling C | | Oil & Gas Operator | May 1995 |
| 6778 | Crowheart Energy LLC | Baggs, WY 82321 | Oil & Gas Operator | Apr 2026 |
| 6779 | Crown Central Pet Corp | Bellaire, TX 77401 | Oil & Gas Operator | Dec 2016 |
| 6780 | Crown Central Petroleum Corp | Richmond, TX 77469 | Oil & Gas Operator | Dec 1999 |
| 6781 | Crown Consulting Inc | Liberal, KS 67905 | Oil & Gas Operator | Feb 2026 |
| 6782 | Crown Energy Company | Oklahoma City, OK 73106 | Oil & Gas Operator | Apr 2026 |
| 6783 | Crown Energy Partners LLC | Englewood, CO 80112 | Oil & Gas Operator | Sep 2013 |
| 6784 | Crown Equipment Co. | Weatherford, TX 76086 | Oil & Gas Operator | Jun 2026 |
| 6785 | Crown Oil & Gas Co Inc | Labarge, WY 83123 | Oil & Gas Operator | Jan 2023 |
| 6786 | Crown Oil, Inc. | Houston, TX 77002 | Oil Operator | Jan 1999 |
| 6787 | Crown Petroleum Company | Duncan, OK 73534-0938 | Oil & Gas Operator | Jan 2011 |
| 6788 | Crown Petroleum Corp. | Oklahoma City, OK 73106 | Oil & Gas Operator | Jun 2026 |
| 6789 | Crown Well Service Inc | Capon Bridge, WV 26711 | Oil Operator | Feb 2026 |
| 6790 | Crown Zellerbach | | Oil & Gas Operator | May 1986 |
| 6791 | Crown Zellerbach & Newton | | Oil Operator | May 1986 |
| 6792 | Crownquest Operating, LLC | Midland, TX 79710 | Oil & Gas Operator | Jun 2026 |
| 6793 | Crozier & Company | Tyler, TX 75703 | Oil & Gas Operator | Jan 2020 |
| 6794 | CRT'S, Inc. | Abilene, TX 79605 | Oil & Gas Operator | Aug 2008 |
| 6795 | Crude Kin Oil Company, Inc. | Louisburg, KS 66053 | Oil Operator | Feb 2026 |
| 6796 | Crude Oil Recovery Inc /Osage Only | | Oil & Gas Operator | Mar 2006 |
| 6797 | Crude Operators, L.L.C. | Pampa, TX 79066 | Oil & Gas Operator | Jun 2026 |
| 6798 | Crude Producers | | Oil & Gas Operator | Sep 1988 |
| 6799 | Crude Production Company | Clyde, TX 79510 | Oil & Gas Operator | Jun 2026 |
| 6800 | Crude Resources | Sapulpa, OK 74066 | Oil & Gas Operator | Mar 2008 |