| 1201 | Chesapeake Energy | | Oil & Gas Operator | Dec 2009 |
| 1202 | Chesapeake Energy Ma | | Gas Operator | Jun 2016 |
| 1203 | Chesapeake Energy Marketing, Inc. | | Oil & Gas Operator | May 2026 |
| 1204 | Chesapeake Exploration LLC | Oklahoma City, OK 731540496 | Oil & Gas Operator | Jul 2020 |
| 1205 | Chesapeake Operating LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Sep 2026 |
| 1206 | Chesapeake Operating, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | May 2026 |
| 1207 | Chesapeake Permian LP | Oklahoma City, OK 73118-1044 | Oil & Gas Operator | Feb 2015 |
| 1208 | Chesher Oil Company | Holliday, TX 76366 | Oil Operator | Sep 2026 |
| 1209 | Chesher, Robert | Holliday, TX 76366 | Oil & Gas Operator | Dec 1995 |
| 1210 | Chesna, Bernard | Alden, NY 14004 | Gas Operator | Dec 2025 |
| 1211 | Chesney Marilyn | | Oil Operator | Jul 1987 |
| 1212 | Chesney Oil Comp | | Oil Operator | Sep 1989 |
| 1213 | Chesnut Oil And Gas, Inc. | Corpus Christ, TX 78412 | Oil & Gas Operator | Sep 2026 |
| 1214 | Chesnutt Oil & Gas, Inc. | Mineral, TX 78125 | Oil & Gas Operator | Sep 2026 |
| 1215 | Chessher, Otto Drilling Company | Kearney, MO 64060 | Oil & Gas Operator | Dec 2013 |
| 1216 | Chester F. Dolley | | Oil & Gas Operator | Dec 1986 |
| 1217 | Chester Floyd | | Oil Operator | Feb 1996 |
| 1218 | Chester Oil Company | Wetumka, OK 74883-6227 | Oil & Gas Operator | Jul 2026 |
| 1219 | Chestnut Explor. And Prod., Inc. | Dallas, TX 75208 | Oil & Gas Operator | Sep 2026 |
| 1220 | Chestnut Exploration And Production, Inc. | Richardson, TX 75081 | Oil & Gas Operator | Nov 2020 |
| 1221 | Chestnut Mountain Energy, LLC | Fort Worth, TX 76101 | Oil & Gas Operator | Sep 2026 |
| 1222 | Chestnut Oil LLC | Clarendon, PA 16313-2001 | Oil & Gas Operator | Dec 2022 |
| 1223 | Chestnut Operating, LLC | Graham, TX 76450 | Oil & Gas Operator | Sep 2026 |
| 1224 | Chestnut Petroleum, Inc. | Richardson, TX 75080 | Oil & Gas Operator | Nov 2011 |
| 1225 | Chestnut Production Company | Towanda, KS 67144 | Oil Operator | Jan 1999 |
| 1226 | Chestnut Ridge Energy Of Pa LLC | | Gas Operator | Dec 2025 |
| 1227 | Chestnut Ridge Storage LLC | San Diego, CA 92130 | Gas Operator | Dec 2025 |
| 1228 | Chevron Appalachia, LLC | Corapolis, PA 15108 | Oil & Gas Operator | Jul 2020 |
| 1229 | Chevron Midcontinent, L.P. | Midland, TX 79706 | Oil & Gas Operator | Sep 2026 |
| 1230 | Chevron Oil Company | | Oil & Gas Operator | Dec 1983 |
| 1231 | Chevron Pipe Line Company | Houston, TX 77001 | Oil Operator | Feb 2015 |
| 1232 | Chevron U S A In | | Oil & Gas Operator | Sep 2000 |
| 1233 | Chevron U. S. A., Inc. -Ca | | Oil & Gas Operator | Jan 2000 |
| 1234 | Chevron U. S. A., Inc. -TX | | Oil & Gas Operator | Dec 2004 |
| 1235 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | Sep 2026 |
| 1236 | Chew Bill Incorp | | Oil & Gas Operator | Mar 1994 |
| 1237 | Chew, Bill, Inc. | Hutchinson, KS 67502 | Oil Operator | Sep 2002 |
| 1238 | Chew-Coast & Sons | Bartlesville, OK 74006-0407 | Gas Operator | Dec 2012 |
| 1239 | Cheyenne Explora | | Oil Operator | Jun 1983 |
| 1240 | Cheyenne Minerals, Inc. | Houston, TX 77030 | Oil & Gas Operator | Jun 2001 |
| 1241 | Cheyenne Oil Services, Inc. | Ness City, KS 67560 | Oil Operator | Nov 2023 |
| 1242 | Cheyenne Petroleum Company | Oklahoma City, OK 73134 | Oil & Gas Operator | Sep 2026 |
| 1243 | Cheyenne River LLC | Dallas, TX 75204 | Oil & Gas Operator | Nov 2018 |
| 1244 | Chi Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | Sep 2026 |
| 1245 | Chica Oil Company | Lago VIsta, TX 78645-6561 | Oil & Gas Operator | Mar 2001 |
| 1246 | Chicken Coop, Inc., The | Hondo, TX 78861 | Oil & Gas Operator | Jan 2015 |
| 1247 | Chico Production Corp. | Bowie, TX 76230 | Oil & Gas Operator | Sep 2026 |
| 1248 | Chief Drilling C | | Oil & Gas Operator | Feb 1995 |
| 1249 | Chief Drilling Company | | Oil Operator | Jun 1985 |
| 1250 | Chief Drilling, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Sep 1997 |
| 1251 | Chief Oil & Gas LLC | Dallas, TX 75225 | Oil & Gas Operator | Feb 2022 |
| 1252 | Chief Operating Company | Houston, TX 77070 | Oil & Gas Operator | Feb 2004 |
| 1253 | Chief Operating LLC | Dallas, TX 75225 | Gas Operator | Mar 2009 |
| 1254 | Chief Petroleum Company | Dallas, TX 75244 | Oil & Gas Operator | Jul 1997 |
| 1255 | Chief Well Service Inc | Drumright, OK 74030 | Oil & Gas Operator | Mar 1995 |
| 1256 | Chieftain Oil Co Inc | Kiowa, KS 67070 | Oil & Gas Operator | Jul 2026 |
| 1257 | Childers, J. C. | Borger, TX 79008 | Oil & Gas Operator | Aug 2003 |
| 1258 | Chiles Jack Well Service | Atwood, OK 74827-0373 | Oil Operator | Apr 2014 |
| 1259 | Chiles Oil Field Supply | | Oil & Gas Operator | Jan 2025 |
| 1260 | Chiles Robert Morris | Allen, OK 74825 | Oil Operator | Jun 2026 |
| 1261 | Chiltipin Production Company | Corpus Chrsti, TX 78466 | Oil & Gas Operator | Sep 2026 |
| 1262 | Chilton Energy | Corpus Christ, TX 78401 | Oil & Gas Operator | Sep 2006 |
| 1263 | China Star Oil Co., LLC | Woodway, TX 76712 | Oil & Gas Operator | Jun 2010 |
| 1264 | Chinn Exploration Company | Longview, TX 75605 | Oil & Gas Operator | Nov 2015 |
| 1265 | Chinn, Larry A | | Oil & Gas Operator | Jun 2026 |
| 1266 | Chinn, Larry E | | Oil & Gas Operator | Jun 2026 |
| 1267 | Chinn, Velma D | | Oil Operator | Mar 2015 |
| 1268 | Chinook Energy C | | Oil Operator | Jul 1991 |
| 1269 | Chiodo Corp. | San Antonio, TX 78232 | Oil & Gas Operator | Sep 2026 |
| 1270 | Chipcore LLC | Casper, WY 82601 | Oil & Gas Operator | Jul 2026 |
| 1271 | Chipmunk'S Oil & Gas Lease Oper., Inc. | Copan, OK 74022 | Oil Operator | Dec 1996 |
| 1272 | Chipper Energy LLC | Magnolia, OH 44643 | Oil & Gas Operator | Dec 2025 |
| 1273 | Chippewa Cree Tribe | | Gas Operator | Jun 2026 |
| 1274 | Chippewa Oil & Gas Inc | Douglas, WY 82633 | Oil & Gas Operator | Jan 1985 |
| 1275 | Chisholm Energy Operating, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Sep 2022 |
| 1276 | Chisholm Exploration | Abilene, TX 79604 | Oil & Gas Operator | Sep 2026 |
| 1277 | Chisholm Oil & Gas, LC | Buda, TX 78610 | Oil & Gas Operator | Sep 2026 |
| 1278 | Chisholm Oil And Gas Operating LLC | Tulsa, OK 74103-3522 | Oil & Gas Operator | Jul 2026 |
| 1279 | Chisholm Oil Investments | Seabrook, TX 77586 | Oil & Gas Operator | Sep 2026 |
| 1280 | Chisholm Operating LLC | Oklahoma City, OK 73101-1502 | Oil & Gas Operator | Dec 2017 |
| 1281 | Chisholm Operating, Inc. | Abilene, TX 79606 | Oil & Gas Operator | Sep 2026 |
| 1282 | Chisholm Trail Energy Ops, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Jul 2026 |
| 1283 | Chisler Brothers Contracting Limited Liability Company | Pentress, WV 265440000 | Oil & Gas Operator | Dec 2021 |
| 1284 | Chisler, F. M. | Clemmons, NC 27012 | Oil & Gas Operator | Jul 2021 |
| 1285 | Chisos Exploration Inc | Enid, OK 73703 | Oil & Gas Operator | Dec 2004 |
| 1286 | Chisos Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | Sep 2026 |
| 1287 | Chisos, LTD | Houston, TX 77098 | Oil & Gas Operator | Sep 2026 |
| 1288 | Chisum G H | Duncan, OK 73533 | Oil & Gas Operator | Dec 2010 |
| 1289 | Chisum Oil & Gas, LLC | Medicine Lodge, KS 67104 | Oil & Gas Operator | May 2026 |
| 1290 | Chisum Resources | Shallowater, TX 79363 | Oil Operator | Sep 2026 |
| 1291 | Chital Petroleum Corp. | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2000 |
| 1292 | Chittim Operating LLC | Houston, TX 77079 | Oil & Gas Operator | Sep 2026 |
| 1293 | Chizum Oil LLC | Wichita, KS 67211 | Oil & Gas Operator | Jul 2026 |
| 1294 | Chmelar, Eugene Oil & Gas | Caldwell, TX 77836 | Oil & Gas Operator | Sep 2026 |
| 1295 | Choate Kenny Dba Rebound Oil Co | Helena, OK 73741-0543 | Gas Operator | Jul 2026 |
| 1296 | Chockley Energy LLC | Beaver, OK 73932 | Gas Operator | Jun 2026 |
| 1297 | Choctaw Gas Company | Quinton, OK 74561 | Gas Operator | Jun 2026 |
| 1298 | Choctaw Holdings, Inc. | | Oil Operator | Dec 1974 |
| 1299 | Choctaw II Oil & Gas, LTD. | Houston, TX 77002 | Oil & Gas Operator | Jan 2002 |
| 1300 | Choctaw Resources, Inc. | Aledo, TX 76008 | Oil & Gas Operator | Dec 2019 |