| 1201 | RKK Production Company | Mustang, OK 73064 | Oil & Gas Operator | Jan 2024 |
| 1202 | RKR Exploration Inc | Seminole, OK 74868-1688 | Oil & Gas Operator | Dec 2023 |
| 1203 | RKW Operating LLC | Weatherford, TX 76085 | Gas Operator | Apr 2024 |
| 1204 | RL Investment, LLC | Hill City, KS 67642 | Oil Operator | Dec 2023 |
| 1205 | RL&B Energy LLC | | Oil & Gas Operator | Jan 2024 |
| 1206 | RLB Enterprises, Inc. | Strawn, TX 76475 | Oil & Gas Operator | Feb 1997 |
| 1207 | RLM Energy Company Inc. | Monroe, LA 71201 | Oil & Gas Operator | Mar 2008 |
| 1208 | RLP Gulf States, L.L.C. | | Oil & Gas Operator | Apr 2012 |
| 1209 | RLS Oil Company | Tulia, TX 79088 | Oil & Gas Operator | Apr 2024 |
| 1210 | RLS Partnership | | Oil Operator | Apr 1983 |
| 1211 | RLT Investment | Morland, KS 67650 | Oil Operator | Mar 2009 |
| 1212 | Rlu Oil & Gas, Inc. | Devine, TX 78016 | Oil & Gas Operator | Apr 2024 |
| 1213 | Rlu Operating, LLC | Devine, TX 78016 | Oil & Gas Operator | Apr 2024 |
| 1214 | RM Oil & Gas Co | Pawhuska, OK 74056 | Oil Operator | Jul 1999 |
| 1215 | RMB Corporation | Senecaville, OH 43780 | Oil & Gas Operator | Dec 2016 |
| 1216 | RMB Operating LLC | Houston, TX 77269 | Oil & Gas Operator | Apr 2024 |
| 1217 | RMC Petroleum, Inc. | Midland, TX 79710 | Oil & Gas Operator | Dec 1996 |
| 1218 | Rme Austin Chalk Company | Houston, TX 77251 | Oil & Gas Operator | Nov 2002 |
| 1219 | Rme Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Nov 2016 |
| 1220 | Rmi Company | Niles, OH 44446 | Oil & Gas Operator | Dec 1984 |
| 1221 | Rmor Production | Kilgore, TX 75662 | Oil Operator | Apr 2024 |
| 1222 | RMR Drilling Com | | Oil Operator | Sep 1988 |
| 1223 | RMR Energy Resources | | Oil Operator | Nov 2023 |
| 1224 | RMR Oil Company | Jacksboro, TX 76458 | Oil & Gas Operator | Sep 2005 |
| 1225 | RMR Operating, LLC | Dallas, TX 75235 | Oil & Gas Operator | Apr 2024 |
| 1226 | RMS Monte Christo, LLC | Snowmass VLG., CO 81615 | Oil & Gas Operator | Mar 2023 |
| 1227 | RMT Resources LLC | | Oil Operator | Jan 2024 |
| 1228 | RNS Oil Co. | Rio Grande Ci, TX 78582 | Oil Operator | Apr 2024 |
| 1229 | Ro-Jo, Inc. | Highland VLG, TX 75077 | Oil & Gas Operator | Aug 2003 |
| 1230 | Roach, R. Byron Trustee | Judson, TX 75660 | Oil & Gas Operator | Mar 1999 |
| 1231 | Roach, R. Byron, Trustee, LLC | Judson, TX 75660 | Oil & Gas Operator | Mar 2007 |
| 1232 | Road Oil Sales Inc. | Tyler, TX 75711 | Oil Operator | Dec 1984 |
| 1233 | Road Runner Inc | Park City, UT 84060 | Oil & Gas Operator | Aug 2005 |
| 1234 | Roadrunner Energy | | Oil Operator | Sep 2005 |
| 1235 | Roadrunner Energy, Inc. | Tulsa, OK 74120 | Oil & Gas Operator | Mar 2015 |
| 1236 | Roan Resources LLC | | Oil & Gas Operator | Oct 2023 |
| 1237 | Roanoke Corporation | Fort Worth, TX 76102 | Oil & Gas Operator | Oct 1995 |
| 1238 | Roaring Springs Energy, LTD. | Midland, TX 79702 | Oil & Gas Operator | Feb 2010 |
| 1239 | Roark S L | | Oil & Gas Operator | Nov 1992 |
| 1240 | Roark, Nancy | Winfield, KS 67156 | Oil Operator | Dec 2004 |
| 1241 | Rob-Joe Gas & Oil Co. | Ranger, TX 76470 | Oil & Gas Operator | Apr 2024 |
| 1242 | Robbins Petroleum Corp. | Longview, TX 75606 | Oil & Gas Operator | Sep 1994 |
| 1243 | Robbins Thomas D & Charlene A Revocable Trust | Plano, TX 75093-7471 | Oil Operator | Jul 2018 |
| 1244 | Robbins, Jesse M. | Jamestown, NY 14701 | Gas Operator | Dec 2022 |
| 1245 | Robbins, L. C. | Seguin, TX 78155 | Oil & Gas Operator | Aug 2003 |
| 1246 | Robby Kohutek, Inc. | Ballinger, TX 76821 | Oil & Gas Operator | Apr 2024 |
| 1247 | Robco Investments, Inc. | | Oil & Gas Operator | Jul 2016 |
| 1248 | Roberson David A | Ada, OK 74821-0008 | Oil & Gas Operator | Jul 2010 |
| 1249 | Roberson Farm Equipment, Inc. | | Oil Operator | Mar 1989 |
| 1250 | Roberson Oil Company | Houston, TX 77046 | Oil & Gas Operator | Jan 2024 |
| 1251 | Roberson Well Service | | Gas Operator | Dec 2023 |
| 1252 | Roberson, Joe | Vernon, TX 76385 | Oil & Gas Operator | Feb 2015 |
| 1253 | Robert A Craig | | Oil Operator | Jul 2020 |
| 1254 | Robert A. Cohan | | Oil & Gas Operator | Jan 2018 |
| 1255 | Robert C Dintelman | Farmington, NM 87401 | Oil & Gas Operator | Jan 2000 |
| 1256 | Robert C. Brower, LLC | Southlake, TX 76092 | Oil & Gas Operator | Apr 2024 |
| 1257 | Robert C. Pettit | | Oil & Gas Operator | Feb 1986 |
| 1258 | Robert D Valerius Inc. | | Oil Operator | Mar 1996 |
| 1259 | Robert D. VIgue | | Oil Operator | Dec 2000 |
| 1260 | Robert E McDowell | | Oil Operator | Dec 1998 |
| 1261 | Robert E. & Ruby C. Beasley Trustees | | Oil & Gas Operator | Dec 1990 |
| 1262 | Robert E. Landreth | Midland, TX 79701 | Oil & Gas Operator | Jun 2014 |
| 1263 | Robert G Cox & Assoc La Inc. | | Oil & Gas Operator | Jun 1994 |
| 1264 | Robert H Forrest Jr Oil LLC | Carlsbad, NM 88220 | Oil & Gas Operator | Nov 2023 |
| 1265 | Robert Hawkins Inc | Kevin, MT 59454 | Oil & Gas Operator | Jan 2024 |
| 1266 | Robert Hopkins Operations, LLC | Salina, KS 67401 | Oil Operator | Oct 2023 |
| 1267 | Robert K. Freeman | | Oil Operator | Jul 1991 |
| 1268 | Robert L Bayless | Farmington, NM 87499 | Oil & Gas Operator | Nov 2003 |
| 1269 | Robert L Bayless Producer, LLC | Denver, CO 80293 | Oil & Gas Operator | Feb 2024 |
| 1270 | Robert L Love | Hobbs, NM 88240 | Oil & Gas Operator | May 1997 |
| 1271 | Robert L Parker Trust | Tulsa, OK BADADDR | Oil & Gas Operator | Oct 2003 |
| 1272 | Robert L. Waterbury | | Oil & Gas Operator | Nov 2001 |
| 1273 | Robert L. Waterbury, L.L.C. | | Oil & Gas Operator | Jan 2024 |
| 1274 | Robert M. Mills | | Oil Operator | Oct 2017 |
| 1275 | Robert N Enfield | Santa Fe, NM 87501 | Oil & Gas Operator | Nov 1997 |
| 1276 | Robert P. Artzberger | | Oil & Gas Operator | Dec 1979 |
| 1277 | Robert P. Wilson, Inc. | Montclair, NJ 07043 | Gas Operator | Dec 2019 |
| 1278 | Robert R Click | Dallas, TX 75231 | Oil & Gas Operator | Dec 1994 |
| 1279 | Robert S. Barnwell, III | | Oil & Gas Operator | Oct 1984 |
| 1280 | Robert S. Harwell, Inc. | Edmond, OK 73034 | Oil Operator | Jun 2023 |
| 1281 | Robert Sumpf | | Gas Operator | Dec 1990 |
| 1282 | Robert T. Epperson Prod Co, LLC | Tyler, TX 75713 | Gas Operator | Dec 2017 |
| 1283 | Robert Vanzant LLC | | Oil Operator | Dec 2023 |
| 1284 | Robert W. Berry Inc. | | Gas Operator | Dec 1988 |
| 1285 | Robert W. Lee Investments | | Oil & Gas Operator | Dec 1998 |
| 1286 | Robert W. Omeara | | Oil & Gas Operator | Sep 1988 |
| 1287 | Robert-Gay Energ | | Oil & Gas Operator | Jun 1992 |
| 1288 | Robert-Gay Energy Enterprises | Hutchinson, KS 67501 | Oil Operator | Nov 1999 |
| 1289 | Roberta Hutton/Robert Hutton | Iola, KS 66749 | Oil Operator | Oct 2007 |
| 1290 | Roberts & Bunch Resources | | Oil & Gas Operator | Dec 1993 |
| 1291 | Roberts & Hammack, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Apr 2024 |
| 1292 | Roberts & Murphy | | Oil & Gas Operator | Sep 1995 |
| 1293 | Roberts & Murphy, Inc. | Shreveport, LA 71137 | Oil & Gas Operator | Apr 2016 |
| 1294 | Roberts & Roberts Enterprise,Inc | Levelland, TX 79336 | Oil & Gas Operator | Jun 1996 |
| 1295 | Roberts Brothers | | Oil Operator | Oct 1993 |
| 1296 | Roberts Herman | Henderson, NV 89014 | Oil Operator | Jul 2023 |
| 1297 | Roberts Oil Corp. | | Oil & Gas Operator | Sep 1982 |
| 1298 | Roberts Resources, Inc. | Wichita, KS 67275 | Oil & Gas Operator | Dec 2023 |
| 1299 | Roberts Zetau J Fisk | Moore, OK 73160 | Oil & Gas Operator | Sep 1993 |
| 1300 | Roberts, Charles J. | Alden, NY 14004 | Gas Operator | Dec 2022 |