| 2101 | Chancellor, Earl Sales Co., Inc. | Sweetwater, TX 79556 | Oil & Gas Operator | Apr 2025 |
| 2102 | Chandler & Associates, Inc. | Denver, CO 80202 | Oil & Gas Operator | May 1997 |
| 2103 | Chandler Oil & Gas, LLC | Beeville, TX 78102 | Oil & Gas Operator | Apr 2025 |
| 2104 | Chaney Oil Company | Andrews, TX 79714 | Oil & Gas Operator | Apr 2025 |
| 2105 | Channa Operating, LLC | Houston, TX 77063 | Oil & Gas Operator | Jul 2021 |
| 2106 | Channel Production Company | Marshall, TX 75670 | Oil & Gas Operator | Apr 2025 |
| 2107 | Chanze Oil Co., Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2025 |
| 2108 | Chap Operating, Inc. | Knox City, TX 79529 | Oil & Gas Operator | Apr 2025 |
| 2109 | Chaparosa Production Company,Inc | Freer, TX 78357 | Oil & Gas Operator | Apr 2025 |
| 2110 | Chaparral (USA) Energy, Inc. | Oklahoma City, OK 73114 | Oil & Gas Operator | Sep 2002 |
| 2111 | Chaparral Energy, L.L.C. | Oklahoma City, OK 73142 | Oil & Gas Operator | Apr 2025 |
| 2112 | Chaparral Natural Resources,Inc. | Austin, TX 78746 | Oil & Gas Operator | Apr 2025 |
| 2113 | Chaparral Operating, Inc. | Shreveport, LA 71166 | Oil & Gas Operator | Apr 2025 |
| 2114 | Chapco, Inc. | Benavides, TX 78341 | Oil & Gas Operator | Apr 2025 |
| 2115 | Chapman Oil Company | Midland, TX 79702 | Oil & Gas Operator | Feb 2025 |
| 2116 | Chapman, Ford Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | Jan 1996 |
| 2117 | Chapparal Operating Co. | Fort Worth, TX 76121 | Oil & Gas Operator | Apr 2025 |
| 2118 | Chapter Petroleum | Borger, TX 79008 | Oil & Gas Operator | Mar 1997 |
| 2119 | Chapter Petroleum, Inc. | Borger, TX 79008 | Oil & Gas Operator | Mar 2001 |
| 2120 | Chardonnay Operating, Inc. | Olney, TX 76374 | Oil & Gas Operator | Dec 1996 |
| 2121 | Charger Oil & Gas, LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2014 |
| 2122 | Charger Shale Oil Operating, LLC | Austin, TX 78704 | Oil & Gas Operator | Sep 2021 |
| 2123 | Charis Oil & Gas, LLC | Addison, TX 75001 | Oil & Gas Operator | Apr 2025 |
| 2124 | Charles A. Bird, Estate | Midland, TX 79702 | Oil & Gas Operator | Feb 2015 |
| 2125 | Charles D. Self Operating, LLC | Jacksboro, TX 76458 | Oil Operator | Apr 2025 |
| 2126 | Charro Operating LLC | Englewood, CO 80112 | Oil & Gas Operator | Apr 2025 |
| 2127 | Charter Oak Production Co LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Apr 2025 |
| 2128 | Charter Petroleum Company | Abilene, TX 79605 | Oil & Gas Operator | Apr 2025 |
| 2129 | Chartex Petroleum Company | Houston, TX 77070 | Oil & Gas Operator | Aug 2000 |
| 2130 | Chase Avenue Corporation, The | Dallas, TX 75219 | Oil & Gas Operator | Jun 2003 |
| 2131 | Chase Energy, Inc. | Austin, TX 78763 | Oil & Gas Operator | Oct 2001 |
| 2132 | Chase Operating Company | Abilene, TX 79608 | Oil & Gas Operator | Feb 2016 |
| 2133 | Chase Production Company | Pampa, TX 79066 | Oil & Gas Operator | Apr 2025 |
| 2134 | Chasla Energy, LLC | Iowa Park, TX 76367 | Oil Operator | Apr 2025 |
| 2135 | Chass Production Co. | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Nov 2020 |
| 2136 | Chateau Oil And Gas, Inc. | Dallas, TX 75225 | Oil & Gas Operator | Feb 2017 |
| 2137 | CHB Interests, LLC | Kilgore, TX 75663 | Oil Operator | Oct 2011 |
| 2138 | CHB Investments | Kilgore, TX 75663 | Oil & Gas Operator | Jan 2004 |
| 2139 | Cheatham Well Service, Inc. | Luling, TX 78648 | Oil Operator | Apr 2025 |
| 2140 | Cheatham, Joe R. Oil Co. | Lockhart, TX 78644 | Oil & Gas Operator | Dec 2018 |
| 2141 | Cheatham, W. C. | Olney, TX 76374 | Oil & Gas Operator | Feb 2002 |
| 2142 | Cheetah Investments, Inc. | Winters, TX 79567 | Oil & Gas Operator | Apr 2025 |
| 2143 | Chek Oil Co. | Midland, TX 79708 | Oil & Gas Operator | May 2019 |
| 2144 | Chek Oil Co., LLC | Midland, TX 79704 | Oil Operator | Apr 2025 |
| 2145 | Chemily Management Company | Cypress, TX 77429 | Oil & Gas Operator | Apr 2023 |
| 2146 | Chenango Oil And Gas Co. | Groves, TX 77619 | Oil & Gas Operator | Apr 2025 |
| 2147 | Chenoweth, Grover | Marble Falls, TX 78654 | Oil & Gas Operator | Apr 2025 |
| 2148 | Cherco Properties, Inc. | Tyler, TX 75702 | Oil & Gas Operator | Nov 1999 |
| 2149 | Cherokee DRLG. & Dev. Corp. | Winnetka, IL 60093 | Oil & Gas Operator | Jan 2003 |
| 2150 | Cherokee Production Corp. | Greenville, TX 75401 | Oil & Gas Operator | Apr 2025 |
| 2151 | Cherokee Production LLC | Goliad, TX 77963 | Oil Operator | Apr 2025 |
| 2152 | Cherry Oil & Gas | Luling, TX 78648 | Oil & Gas Operator | Dec 2000 |
| 2153 | Cherry, William H., Inc. | Oklahoma City, OK 73125 | Oil & Gas Operator | Mar 2015 |
| 2154 | Chesapeake Operating LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Apr 2025 |
| 2155 | Chesapeake Operating, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Dec 2024 |
| 2156 | Chesapeake Permian LP | Oklahoma City, OK 73118-1044 | Oil & Gas Operator | Feb 2015 |
| 2157 | Chesher Oil Company | Holliday, TX 76366 | Oil Operator | Apr 2025 |
| 2158 | Chesher, Robert | Holliday, TX 76366 | Oil & Gas Operator | Dec 1995 |
| 2159 | Chesnut Oil And Gas, Inc. | Corpus Chrsti, TX 78412 | Oil & Gas Operator | Apr 2025 |
| 2160 | Chesnutt Oil & Gas, Inc. | Mineral, TX 78125 | Oil & Gas Operator | Apr 2025 |
| 2161 | Chessher, Otto Drilling Company | Kearney, MO 64060 | Oil & Gas Operator | Dec 2013 |
| 2162 | Chestnut Explor. And Prod., Inc. | Dallas, TX 75208 | Oil & Gas Operator | Apr 2025 |
| 2163 | Chestnut Mountain Energy, LLC | Fort Worth, TX 76101 | Oil & Gas Operator | Apr 2025 |
| 2164 | Chestnut Petroleum, Inc. | Richardson, TX 75080 | Oil & Gas Operator | Nov 2011 |
| 2165 | Chevron Midcontinent, L.P. | Midland, TX 79706 | Oil & Gas Operator | Apr 2025 |
| 2166 | Chevron Pipe Line Company | Houston, TX 77001 | Oil Operator | Feb 2015 |
| 2167 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | Apr 2025 |
| 2168 | Cheyenne Minerals, Inc. | Houston, TX 77030 | Oil & Gas Operator | Jun 2001 |
| 2169 | Cheyenne Petroleum Company | Oklahoma City, OK 73134 | Oil & Gas Operator | Apr 2025 |
| 2170 | Chi Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 2025 |
| 2171 | Chicken Coop, Inc., The | Hondo, TX 78861 | Oil & Gas Operator | Jan 2015 |
| 2172 | Chico Production Corp. | Bowie, TX 76230 | Oil & Gas Operator | Apr 2025 |
| 2173 | Chief Oil & Gas LLC | Dallas, TX 75225 | Oil & Gas Operator | Feb 2022 |
| 2174 | Chief Operating Company | Houston, TX 77070 | Oil & Gas Operator | Feb 2004 |
| 2175 | Chief Operating LLC | Dallas, TX 75225 | Gas Operator | Mar 2009 |
| 2176 | Chief Petroleum Company | Dallas, TX 75244 | Oil & Gas Operator | Jul 1997 |
| 2177 | Childers, J. C. | Borger, TX 79008 | Oil & Gas Operator | Aug 2003 |
| 2178 | Chiltipin Production Company | Corpus Chrsti, TX 78466 | Oil & Gas Operator | Apr 2025 |
| 2179 | Chilton Energy | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Sep 2006 |
| 2180 | China Star Oil Co., LLC | Woodway, TX 76712 | Oil & Gas Operator | Jun 2010 |
| 2181 | Chinn Exploration Company | Longview, TX 75605 | Oil & Gas Operator | Nov 2015 |
| 2182 | Chiodo Corp. | San Antonio, TX 78232 | Oil & Gas Operator | Apr 2025 |
| 2183 | Chisholm Exploration | Abilene, TX 79604 | Oil & Gas Operator | Apr 2025 |
| 2184 | Chisholm Oil & Gas, LC | Buda, TX 78610 | Oil & Gas Operator | Apr 2025 |
| 2185 | Chisholm Oil Investments | Seabrook, TX 77586 | Oil & Gas Operator | Apr 2025 |
| 2186 | Chisholm Operating, Inc. | Abilene, TX 79606 | Oil & Gas Operator | Apr 2025 |
| 2187 | Chisos Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 2025 |
| 2188 | Chisos, LTD | Houston, TX 77098 | Oil & Gas Operator | Apr 2025 |
| 2189 | Chisum Resources | Shallowater, TX 79363 | Oil Operator | Apr 2025 |
| 2190 | Chital Petroleum Corp. | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2000 |
| 2191 | Chittim Operating LLC | Houston, TX 77079 | Oil & Gas Operator | Apr 2025 |
| 2192 | Chmelar, Eugene Oil & Gas | Caldwell, TX 77836 | Oil & Gas Operator | Apr 2025 |
| 2193 | Choctaw II Oil & Gas, LTD. | Houston, TX 77002 | Oil & Gas Operator | Jan 2002 |
| 2194 | Choctaw Resources, Inc. | Aledo, TX 76008 | Oil & Gas Operator | Dec 2019 |
| 2195 | Choice Exploration, Inc. | Irving, TX 75063 | Oil & Gas Operator | Apr 2025 |
| 2196 | Cholla Petroleum Inc | Dallas, TX 75225 | Oil & Gas Operator | Apr 2025 |
| 2197 | CHP Oil & Gas Company, L.C. | El Campo, TX 77437 | Oil & Gas Operator | Apr 2025 |
| 2198 | Christensen & Matthews | Houston, TX 77040 | Oil & Gas Operator | Apr 2025 |
| 2199 | Christeve Oil Company, Inc. | Houston, TX 77068 | Oil & Gas Operator | Dec 2022 |
| 2200 | Christian Energy, Inc. | Mandeville, LA 70470 | Oil & Gas Operator | Mar 2008 |