| 6101 | CLR Secondary Recovery, LLC | Wichita Falls, TX 76306 | Oil & Gas Operator | Apr 2025 |
| 6102 | CLS Interests, Incorporated | Austin, TX 78734 | Oil & Gas Operator | Jan 1997 |
| 6103 | CLS Petroleum Holdings LLC | Iowa Park, TX 76367 | Oil Operator | Apr 2025 |
| 6104 | Clsog L.C. | Houston, TX 77024 | Gas Operator | Jun 2008 |
| 6105 | Clubine, Jim L. | Independence, KS 67301 | Oil Operator | Nov 2024 |
| 6106 | Clute Oil Corporation | Cherry Hills VIllage, CO 80113 | Oil & Gas Operator | Dec 2024 |
| 6107 | CLV Oil & Gas Inc | Tulsa, OK 74169-0713 | Oil & Gas Operator | Apr 2020 |
| 6108 | CLX Oil & Gas LLC | | Oil & Gas Operator | Feb 2005 |
| 6109 | Clyde B. Baker Opr. | | Gas Operator | Dec 1995 |
| 6110 | Clyde G. Kissinger | | Oil Operator | Jun 1964 |
| 6111 | Clyde H & Rae M Peters | Waterford, PA 16441-8872 | Gas Operator | Dec 2007 |
| 6112 | Clyde Petroleum | | Oil & Gas Operator | Dec 1988 |
| 6113 | Clyde W. Jones | | Oil Operator | Sep 2003 |
| 6114 | Clydesdale Energy LLC | Oklahoma City, OK 73116-9111 | Oil & Gas Operator | Nov 2019 |
| 6115 | Clymar, Inc | New Lexington, OH 43764 | Oil & Gas Operator | Dec 1996 |
| 6116 | CM Exploration Company Inc. | | Oil & Gas Operator | Apr 2009 |
| 6117 | CM Oil Co. | FT Stockton, TX 79735 | Oil & Gas Operator | Apr 2025 |
| 6118 | CM Oil Co., L.L.C. | | Oil Operator | Jan 2025 |
| 6119 | CM Production LLC | | Oil & Gas Operator | Aug 2020 |
| 6120 | CM TX Production, LLC | Lakewood, CO 80228 | Oil & Gas Operator | Feb 2023 |
| 6121 | CM5 Resources, LLC | Artesia, NM 88211 | Oil & Gas Operator | Feb 2025 |
| 6122 | Cmint Productions LLC | Dallas, TX 75248-2643 | Oil Operator | Oct 2021 |
| 6123 | CML Exploration, LLC | Austin, TX 78746 | Oil & Gas Operator | Apr 2025 |
| 6124 | Cmo Inc. | | Oil Operator | Dec 2024 |
| 6125 | Cmo LLC | Cleveland, OK 74020 | Oil & Gas Operator | Jan 2025 |
| 6126 | CMR Energy, L.P. | Houston, TX 77077 | Oil & Gas Operator | Apr 2025 |
| 6127 | CMR Operating LLC | Tulsa, OK 74135-2653 | Oil & Gas Operator | Jun 2018 |
| 6128 | CMS Energy Inc | Dallas, TX 75287 | Oil & Gas Operator | Jan 2025 |
| 6129 | CMS Nomeco Oil & Gas Co. | Jackson, MI 49201 | Oil & Gas Operator | Jan 2015 |
| 6130 | CMS Oil And Gas Company | Jackson, MI 49201 | Oil & Gas Operator | Oct 2002 |
| 6131 | CMT Oil & Gas Company Inc | Tulsa, OK 74133-6724 | Oil & Gas Operator | Jan 2025 |
| 6132 | CMT Operating LLC | Cleveland, OK 74020-0113 | Oil & Gas Operator | Mar 2015 |
| 6133 | CMW Oil Company | | Oil & Gas Operator | Dec 1976 |
| 6134 | CMX Inc Of Kansas | Wichita, KS 67206-2561 | Oil & Gas Operator | Feb 2025 |
| 6135 | CMX, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Dec 2024 |
| 6136 | CN Operating Company | Drumright, OK 74030 | Oil & Gas Operator | Nov 1998 |
| 6137 | CNC Oil Co., Inc. | | Oil Operator | Aug 1991 |
| 6138 | CNG Development Co | | Oil & Gas Operator | Dec 2008 |
| 6139 | CNG Producing | New Orleans, LA 70112-6000 | Oil & Gas Operator | Jun 2000 |
| 6140 | CNG Producing Co.-Tulsa Div. | | Oil & Gas Operator | Jun 1986 |
| 6141 | CNG Producing Company | New Orleans, LA 70112 | Oil & Gas Operator | Dec 2015 |
| 6142 | CNR Resources, Inc. | Houston, TX 77002-4103 | Oil & Gas Operator | May 2005 |
| 6143 | CNS Energy, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Nov 2010 |
| 6144 | CNX Gas Company LLC | Canonsburg, PA 15317 | Oil & Gas Operator | Feb 2025 |
| 6145 | Co Energy | Benbrook, TX 76126 | Oil & Gas Operator | Apr 2025 |
| 6146 | Co-Co Incorporat | | Oil Operator | Oct 1989 |
| 6147 | Co-Co Oil, Inc. | Lubbock, TX 79407 | Oil & Gas Operator | Aug 2003 |
| 6148 | Co-St Oil Operating Co Inc | Enid, OK 73706 | Oil & Gas Operator | Apr 1997 |
| 6149 | Co-Wil-Co, Incorporated | | Oil Operator | Dec 1990 |
| 6150 | Coachman Energy Operating Company LLC | Englewood, CO 80111 | Oil & Gas Operator | May 2024 |
| 6151 | Coal Creek Energy, LLC | Overland Park, KS 66221 | Oil Operator | Dec 2019 |
| 6152 | Coal Creek Minerals LLC | Northglenn, CO 80234 | Gas Operator | Feb 2012 |
| 6153 | Coal Gas Recovery II LLC | Waynesburg, PA 15370 | Gas Operator | Dec 2017 |
| 6154 | Coal Gas Recovery LLC | Waynesburg, PA 15370-2330 | Gas Operator | Dec 2012 |
| 6155 | Coal Gas Recovery LP | Linthicum Heights, MD 21090-2227 | Gas Operator | Dec 2010 |
| 6156 | Coal Gas Transportation LLC | Cadiz, OH 43907 | Gas Operator | Dec 2016 |
| 6157 | Coal Oil & Gas Company | Ada, OK 74820 | Oil & Gas Operator | Feb 2025 |
| 6158 | Coal Oil Inc. | | Oil & Gas Operator | Dec 1997 |
| 6159 | Coaleum Corporation | Dallas, TX 75205 | Oil & Gas Operator | Jan 2001 |
| 6160 | Coalinga Corporation | Houston, TX 77002 | Oil & Gas Operator | May 1999 |
| 6161 | Coaltech, Inc. | | Gas Operator | Jun 1993 |
| 6162 | Coark Dev, Inc | Pikeville, KY 41502 | Oil & Gas Operator | Dec 2023 |
| 6163 | Coast David | Bartlesville, OK 74006-0407 | Oil & Gas Operator | Jan 2025 |
| 6164 | Coast Exploration Co. | | Oil & Gas Operator | Nov 1997 |
| 6165 | Coast Petroleum Company | | Oil Operator | Nov 1998 |
| 6166 | Coast Supply Company LTD. | | Oil & Gas Operator | Dec 1991 |
| 6167 | Coastal Bend Petroleum Corp. | Corpus Chrsti, TX 78427 | Oil & Gas Operator | Dec 2002 |
| 6168 | Coastal Chem Inc | Midvale, UT 84047 | Oil & Gas Operator | Aug 2003 |
| 6169 | Coastal Derby Refining Co | Houston, TX 77046 | Oil Operator | Feb 1994 |
| 6170 | Coastal Expanse Oil & Gas | Austin, TX 78704 | Oil & Gas Operator | Apr 2025 |
| 6171 | Coastal Investments Inc. | El Campo, TX 77437 | Oil & Gas Operator | Apr 2025 |
| 6172 | Coastal Management Corporation | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 6173 | Coastal Minerals, Inc. | | Oil Operator | Aug 1991 |
| 6174 | Coastal New Mexico MGMT LLC | Carlsbad, NM 88220 | Oil & Gas Operator | Apr 2025 |
| 6175 | Coastal Oil & Ga | | Oil & Gas Operator | Oct 1996 |
| 6176 | Coastal Oil & Gas | | Oil & Gas Operator | Jul 1995 |
| 6177 | Coastal Oil & Gas Corporation | Houston, TX 77252 | Oil & Gas Operator | Dec 2009 |
| 6178 | Coastal Oils Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Jan 2013 |
| 6179 | Coastal Petro Corp | Oil City, PA 16301-6327 | Oil & Gas Operator | Jul 2018 |
| 6180 | Coastal Plains Energy Inc | Oklahoma City, OK 73112 | Oil & Gas Operator | Apr 2025 |
| 6181 | Coastal Plains Exploration, LLC | Port Lavaca, TX 77979 | Oil & Gas Operator | Apr 2025 |
| 6182 | Coastal Production Company, Inc. | El Campo, TX 77437 | Oil & Gas Operator | Aug 1995 |
| 6183 | Coastal Production Inc. | | Oil & Gas Operator | Aug 2000 |
| 6184 | Coastal Shoreline Corp. | Corpus Chrsti, TX 78460 | Oil & Gas Operator | Aug 2003 |
| 6185 | Coastal States & Emerald Oil | | Oil & Gas Operator | Dec 1979 |
| 6186 | Coastal States Gas Prod. Co. | | Oil & Gas Operator | Jun 1996 |
| 6187 | Coastland Operations, LLC | Dallas, TX 75287 | Oil & Gas Operator | Apr 2025 |
| 6188 | Coastline Exploration, Inc. | Stafford, TX 77477 | Oil & Gas Operator | Apr 2025 |
| 6189 | Coastline Operating, L.L.C. | Houston, TX 77027 | Oil & Gas Operator | Dec 2006 |
| 6190 | Coates Energy Interests, LTD. | San Antonio, TX 78217 | Oil & Gas Operator | Aug 1997 |
| 6191 | Coates Energy Trust | San Antonio, TX 78209 | Oil & Gas Operator | Aug 2008 |
| 6192 | Coats Energy, Inc. | Wichita, KS 67201 | Oil & Gas Operator | Dec 2024 |
| 6193 | Cobalt Energy LLC | Wichita, KS 67202 | Oil & Gas Operator | Dec 2024 |
| 6194 | Cobalt Environmental Solutions LLC | Oklahoma City, OK 73101-0249 | Oil Operator | Jun 2019 |
| 6195 | Cobalt Operating, LLC | Midland, TX 79710 | Oil & Gas Operator | Feb 2025 |
| 6196 | Cobb, E M | Henderson, KY 42420 | Oil Operator | Dec 2022 |
| 6197 | Cobb, Maurice W | | Oil Operator | Dec 2023 |
| 6198 | Cobb, Maurice W Dba M W C Oil Co | Eddyville, KY 42038 | Oil Operator | Dec 2022 |
| 6199 | Cobbs Brothers Oil & Gas | Corpus Chrsti, TX 78476 | Oil & Gas Operator | Jun 2009 |
| 6200 | Cobham Gas Industries, Inc. | | Oil & Gas Operator | Dec 2006 |