| 1301 | Robert E. Landreth | Midland, TX 79701 | Oil & Gas Operator | Jun 2014 |
| 1302 | Robert G Cox & Assoc La Inc. | | Oil & Gas Operator | Jun 1994 |
| 1303 | Robert H & Layna Plummer Rev Intervivios Trust | | Oil Operator | Jul 2018 |
| 1304 | Robert H Forrest Jr Oil LLC | Carlsbad, NM 88220 | Oil & Gas Operator | Jun 2025 |
| 1305 | Robert Hawkins Inc | Kevin, MT 59454 | Oil & Gas Operator | Feb 2026 |
| 1306 | Robert Hopkins Operations, LLC | Salina, KS 67401 | Oil Operator | Nov 2019 |
| 1307 | Robert J & Wilma J Webster | Edinboro, PA 16412-4928 | Gas Operator | Dec 2018 |
| 1308 | Robert K. Freeman | | Oil Operator | Jul 1991 |
| 1309 | Robert L Bayless | Farmington, NM 87499 | Oil & Gas Operator | Nov 2003 |
| 1310 | Robert L Bayless Producer, LLC | Denver, CO 80202 | Oil & Gas Operator | Feb 2026 |
| 1311 | Robert L Love | Hobbs, NM 88240 | Oil & Gas Operator | May 1997 |
| 1312 | Robert L Parker Trust | Tulsa, OK BADADDR | Oil & Gas Operator | Oct 2003 |
| 1313 | Robert L. Waterbury | | Oil & Gas Operator | Nov 2001 |
| 1314 | Robert L. Waterbury, L.L.C. | | Oil & Gas Operator | Dec 2024 |
| 1315 | Robert M. Mills | | Oil Operator | Oct 2017 |
| 1316 | Robert N Enfield | Santa Fe, NM 87501 | Oil & Gas Operator | Nov 1997 |
| 1317 | Robert P. Artzberger | | Oil & Gas Operator | Dec 1979 |
| 1318 | Robert P. Wilson, Inc. | Montclair, NJ 07043 | Gas Operator | Dec 2019 |
| 1319 | Robert R Click | Dallas, TX 75231 | Oil & Gas Operator | Dec 1994 |
| 1320 | Robert S. Barnwell, III | | Oil & Gas Operator | Oct 1984 |
| 1321 | Robert S. Harwell, Inc. | Edmond, OK 73034 | Oil Operator | Nov 2019 |
| 1322 | Robert Sumpf | | Gas Operator | Dec 1990 |
| 1323 | Robert T. Epperson Prod Co, LLC | Tyler, TX 75713 | Gas Operator | Dec 2017 |
| 1324 | Robert W. Berry Inc. | | Gas Operator | Dec 1988 |
| 1325 | Robert W. Lee Investments | | Oil & Gas Operator | Dec 1998 |
| 1326 | Robert W. Omeara | | Oil & Gas Operator | Sep 1988 |
| 1327 | Robert-Gay Energ | | Oil & Gas Operator | Jun 1992 |
| 1328 | Robert-Gay Energy Enterprises | Hutchinson, KS 67501 | Oil Operator | Nov 1999 |
| 1329 | Roberta Hutton/Robert Hutton | Iola, KS 66749 | Oil Operator | Oct 2007 |
| 1330 | Roberts & Bunch Resources | | Oil & Gas Operator | Dec 1993 |
| 1331 | Roberts & Hammack, Inc. | Dallas, TX 75206 | Oil & Gas Operator | May 2026 |
| 1332 | Roberts & Murphy | | Oil & Gas Operator | Sep 1995 |
| 1333 | Roberts & Murphy, Inc. | Shreveport, LA 71137 | Oil & Gas Operator | Apr 2016 |
| 1334 | Roberts & Roberts Enterprise,Inc | Levelland, TX 79336 | Oil & Gas Operator | Jun 1996 |
| 1335 | Roberts Brothers | | Oil Operator | Oct 1993 |
| 1336 | Roberts Herman | Henderson, NV 89014 | Oil Operator | Jul 2023 |
| 1337 | Roberts Oil Corp. | | Oil & Gas Operator | Sep 1982 |
| 1338 | Roberts Resources, Inc. | Wichita, KS 67275 | Oil & Gas Operator | Dec 2025 |
| 1339 | Roberts Zetau J Fisk | Moore, OK 73160 | Oil & Gas Operator | Sep 1993 |
| 1340 | Roberts, Charles J. | Alden, NY 14004 | Gas Operator | Dec 2024 |
| 1341 | Roberts, Harry S &/Or McKinley Ray | Paintsville, KY 41240 | Oil & Gas Operator | Dec 2019 |
| 1342 | Roberts, Oliver M | | Oil & Gas Operator | Dec 2021 |
| 1343 | Roberts, Randy | Sedan, KS 67361 | Oil & Gas Operator | Dec 2025 |
| 1344 | Robertson Energy, LLC | | Oil & Gas Operator | Dec 2024 |
| 1345 | Robertson Jay Estate | Tulsa, OK 74127-3029 | Oil & Gas Operator | Jul 2013 |
| 1346 | Robertson Johnie J | Okmulgee, OK 74447-8765 | Oil & Gas Operator | Jan 2026 |
| 1347 | Robertson Resources, Inc. | Horseshoe Bay, TX 78657 | Oil & Gas Operator | May 2026 |
| 1348 | Robertson, French M. Oil Co. | Abilene, TX 79608 | Oil & Gas Operator | Mar 1995 |
| 1349 | Robertson, Gene Oil Co. | Burkburnett, TX 76354 | Oil & Gas Operator | Jul 1998 |
| 1350 | Robertson, Richard | Tulsa, OK 74127 | Gas Operator | Dec 2025 |
| 1351 | Robertson, T. L. Operating Co. | Cross Plains, TX 76443 | Oil & Gas Operator | May 2004 |
| 1352 | Robertson-Bryce Management, LLC | Tyler, TX 75701 | Oil & Gas Operator | May 2026 |
| 1353 | Robie A. Bridges III | | Oil Operator | Aug 1993 |
| 1354 | Robin Of Perryton Corporation | Perryton, TX 79070 | Oil & Gas Operator | May 2026 |
| 1355 | Robin Of Perryton, Inc. | Perryton, TX 79070 | Oil & Gas Operator | Dec 1995 |
| 1356 | Robin, Jack, Co. | Corpus Christ, TX 78410 | Oil & Gas Operator | Dec 2017 |
| 1357 | Robinett Resources Inc. | Longview, TX 75601 | Oil & Gas Operator | Dec 1999 |
| 1358 | Robinette Oil Company LLC | Chanute, KS 66720 | Oil Operator | Sep 2025 |
| 1359 | Robinowitz Oil C | | Oil Operator | Dec 1996 |
| 1360 | Robinowitz Oil Company | Tulsa, OK 74136-1429 | Oil & Gas Operator | Feb 2023 |
| 1361 | Robinowitz Oil Company, A General Partnership | Tulsa, OK 74136 | Oil & Gas Operator | Feb 2023 |
| 1362 | Robinson Brothers Drilling Co | | Oil & Gas Operator | Jul 2002 |
| 1363 | Robinson Drilling Of Texas | Big Spring, TX 79721 | Oil & Gas Operator | Oct 1996 |
| 1364 | Robinson Energy & Exploration, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Aug 2008 |
| 1365 | Robinson Engineering & Oil Company, Inc | Evansville, IN 47716 | Oil & Gas Operator | Dec 2024 |
| 1366 | Robinson Oil & Gas, Inc. | Chico, TX 76431 | Oil & Gas Operator | Aug 2003 |
| 1367 | Robinson Oil Co. | Graham, TX 76450 | Oil & Gas Operator | May 2026 |
| 1368 | Robinson Oil Com | | Oil & Gas Operator | Feb 1995 |
| 1369 | Robinson Oil Company, LLC | Billings, MT 59103 | Gas Operator | Dec 2015 |
| 1370 | Robinson Oil Inc | Eunice, NM 88231 | Oil & Gas Operator | Jun 2015 |
| 1371 | Robinson Operating Company | Abilene, TX 79604 | Oil & Gas Operator | Aug 2012 |
| 1372 | Robinson Resource Dev. Co.Inc. | | Oil & Gas Operator | Oct 1982 |
| 1373 | Robinson Tracy D | Duncan, OK 73534 | Oil Operator | Oct 2018 |
| 1374 | Robinson, Beryl A. | Peru, KS 67360 | Oil & Gas Operator | Mar 2012 |
| 1375 | Robinson, Gary D | | Oil Operator | Jan 2026 |
| 1376 | Robinson, Irvin | Abilene, TX 79608 | Oil & Gas Operator | May 1999 |
| 1377 | Robison, L. E. Oil | Yates Center, KS 66783 | Oil Operator | Sep 2001 |
| 1378 | Robl-Six, Inc. | Ellinwood, KS 67526 | Oil Operator | Dec 2019 |
| 1379 | Roblyn Oil Inc | Allen, OK 74825-6933 | Oil & Gas Operator | Dec 2025 |
| 1380 | Roblyn Petroleum Corp. | | Oil & Gas Operator | May 1983 |
| 1381 | Robson & Shults Prod Corp | Mannford, OK 74044 | Oil & Gas Operator | Jun 1995 |
| 1382 | Robson Petroleum Company | Tulsa, OK 74104 | Oil & Gas Operator | Jan 1995 |
| 1383 | Robson Resources Inc | Tulsa, OK 74104 | Oil & Gas Operator | May 1998 |
| 1384 | Robuck Petroleum, LLC | Nacogdoches, TX 75965 | Oil & Gas Operator | May 2026 |
| 1385 | Roc Energy, Inc. | Midland, TX 79710 | Oil & Gas Operator | Feb 2013 |
| 1386 | Roc Operating, Inc. | Plano, TX 75093 | Oil & Gas Operator | Oct 2008 |
| 1387 | Roca Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | May 2026 |
| 1388 | Roca Production, Inc. | Fort Worth, TX 76107 | Oil & Gas Operator | May 2026 |
| 1389 | Roca Resource Company, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 1390 | Rocanville Corporation | Dallas, TX 75225 | Oil & Gas Operator | Dec 2016 |
| 1391 | Rocc Oil & Gas, L.P. | Houston, TX 77084 | Oil & Gas Operator | Apr 2024 |
| 1392 | Rocc Operating, LLC | Houston, TX 77084 | Oil & Gas Operator | May 2026 |
| 1393 | Roche, E. Michael | Elma, NY 14059 | Gas Operator | Dec 2024 |
| 1394 | Rochelle Oil & Gas | Gillette, WY 82717 | Oil & Gas Operator | Mar 2024 |
| 1395 | Rochez, Mary B. | East Amherst, NY 14051 | Gas Operator | Dec 2024 |
| 1396 | Rocinante | Houston, TX 77058 | Oil Operator | May 2026 |
| 1397 | Rock Bottom Oil LLC | | Oil Operator | Dec 2024 |
| 1398 | Rock Bottom Oil, GP, L.L.C. | Nacogdoches, TX 75963 | Oil & Gas Operator | May 2026 |
| 1399 | Rock Creek Crude, LLC | Morrill, KS 66515 | Oil Operator | Dec 2025 |
| 1400 | Rock Creek Energy Co | Ada, OK 74820-5725 | Oil Operator | Jul 2022 |