| 26301 | Royal Oil & Gas Corp. | Indiana, PA 15701 | Oil & Gas Operator | Apr 2014 |
| 26302 | Royal Oil LLC | Flower Mound, TX 75028 | Oil Operator | Dec 2015 |
| 26303 | Royal Oil LTD. Co. | Hobbs, NM 88241 | Oil & Gas Operator | Mar 1996 |
| 26304 | Royal Oryx Og LLC | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 26305 | Royal Petroleum | Baytown, TX 77521 | Oil & Gas Operator | Aug 2003 |
| 26306 | Royal Petroleum Co. | Iowa Park, TX 76367 | Oil & Gas Operator | Feb 2026 |
| 26307 | Royal Petroleum Corp. | Dallas, TX 75229 | Oil & Gas Operator | Jan 2025 |
| 26308 | Royal Petroleum Prop Inc | Woodville, OH 43469 | Oil & Gas Operator | Dec 1990 |
| 26309 | Royal Production Company, Inc. | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Feb 2026 |
| 26310 | Royal Resources Corporation | | Oil & Gas Operator | Dec 2008 |
| 26311 | Royal Resources Exploration | | Oil & Gas Operator | Mar 1984 |
| 26312 | Royal Seahorse Developments Inc | San Antonio, TX 78209 | Oil & Gas Operator | Oct 1994 |
| 26313 | Royal Texan Energy Co. | Irvine, CA 92618 | Oil & Gas Operator | Feb 2026 |
| 26314 | Royal Texan Resources Co. | Breckenridge, TX 76424 | Oil & Gas Operator | Feb 2026 |
| 26315 | Royal Texas Petroleum | Lago VIsta, TX 78645 | Oil & Gas Operator | Feb 2026 |
| 26316 | Royale Energy Inc | San Diego, CA 92108-4518 | Oil & Gas Operator | Nov 2025 |
| 26317 | Royale Operating Company | San Diego, CA 92108 | Oil & Gas Operator | Apr 1996 |
| 26318 | Royalton Gas & Oil Co | Brunswick, OH 44212 | Oil & Gas Operator | Dec 1990 |
| 26319 | Royalty Energy Development LLC | Edmond, OK 73003 | Oil & Gas Operator | Dec 2025 |
| 26320 | Royalty Land & Dev. Co., Inc. | Wolfforth, TX 79382 | Oil & Gas Operator | Feb 2026 |
| 26321 | Royalty Management & Dev Corp. | | Oil & Gas Operator | Apr 1998 |
| 26322 | Royalty Operating, Inc. | Richardson, TX 75081 | Oil & Gas Operator | Nov 2007 |
| 26323 | Royalty Petroleum Company | Oklahoma City, OK 73120 | Gas Operator | Feb 2002 |
| 26324 | Royalty Resources, L.L.C. | Midland, TX 79702 | Oil & Gas Operator | Feb 2026 |
| 26325 | Roye Realty & Developing Inc | Stigler, OK 74462-0148 | Gas Operator | Dec 2004 |
| 26326 | Royko Oil Company | Horseshoe Bay, TX 78657 | Oil & Gas Operator | Feb 2026 |
| 26327 | Rozel Operating Company | | Oil & Gas Operator | Oct 2014 |
| 26328 | Rozen H H | | Oil Operator | Aug 2022 |
| 26329 | Rozuk, Claudia | Millersburg, OH 44654 | Gas Operator | Dec 2024 |
| 26330 | Rozzlle Operating Company, LLC | Blackwell, TX 79506 | Oil & Gas Operator | Feb 2026 |
| 26331 | RP Operating, L.L.C. | Houston, TX 77002 | Oil & Gas Operator | Feb 2026 |
| 26332 | Rpa Energy LLC | Ada, OK 74820 | Oil Operator | Nov 2025 |
| 26333 | RPG Operating LLC | MC Queeney, TX 78123 | Oil Operator | Feb 2026 |
| 26334 | RPJ Fund Management Inc | St. Paul, MN 55101 | Oil & Gas Operator | Dec 1991 |
| 26335 | RPM Oilfield Services LLC | Lindsay, OK 73052-8005 | Oil & Gas Operator | Nov 2025 |
| 26336 | RPM Operating Company | New Braunfels, TX 78131 | Oil & Gas Operator | Mar 2008 |
| 26337 | RPM Petroleum, LLC | Oklahoma City, OK 73120 | Oil & Gas Operator | Apr 2013 |
| 26338 | RPS Energy, Inc. | | Oil & Gas Operator | Jul 2020 |
| 26339 | RR Oil Well Operations LLC | Ringwood, OK 73768 | Oil & Gas Operator | Dec 2025 |
| 26340 | RR Ventures Limited Partnership | San Antonio, TX 78239 | Oil & Gas Operator | Feb 2026 |
| 26341 | RRCH Corp. | Longview, TX 75606 | Oil & Gas Operator | Dec 2013 |
| 26342 | RRG Operating, LLC | Odessa, TX 79760 | Oil & Gas Operator | Feb 2026 |
| 26343 | Rrig Exploration, LLC | Fort Worth, TX 76147 | Oil & Gas Operator | Feb 2026 |
| 26344 | RRKK LLC | Columbus, OH 43214-3072 | Oil Operator | Dec 2024 |
| 26345 | RRP Operating LLC | Houston, TX 77046 | Oil & Gas Operator | Feb 2026 |
| 26346 | RRR Exploration, Inc. | Dallas, TX 75247 | Oil & Gas Operator | May 1994 |
| 26347 | RS Gas Co Inc | Sprankle Mills, PA 15776-8312 | Gas Operator | Dec 2025 |
| 26348 | RSC Energy Corp | Brooklyn HTS, OH 44109 | Oil & Gas Operator | Dec 1984 |
| 26349 | RSC Resources Limited Partnership | Midland, TX 79707 | Oil & Gas Operator | Apr 2013 |
| 26350 | RSD Minerals LLC | Wichita, KS 67206 | Oil Operator | Aug 2025 |
| 26351 | Rse, Inc. | Houston, TX 77077 | Oil & Gas Operator | Sep 2000 |
| 26352 | RSP Permian, LLC | Midland, TX 79701 | Oil & Gas Operator | Jul 2018 |
| 26353 | Rta Petroleum, LLC | | Oil Operator | Dec 2024 |
| 26354 | RTB Oil Inc | Crescent, OK 73028-0686 | Oil Operator | May 2016 |
| 26355 | RTC Resources Inc | Midland, TX 79702 | Oil & Gas Operator | Aug 2003 |
| 26356 | RTC Resources, LLP | Weatherford, OK 73096 | Oil & Gas Operator | Feb 2026 |
| 26357 | RTD Inc | Bartlesville, OK 74006 | Oil Operator | Jan 1995 |
| 26358 | RTD Resources, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Feb 2026 |
| 26359 | Rto Operating, LLC | San Antonio, TX 78212 | Oil Operator | Feb 2016 |
| 26360 | RTZ Energy, LLC | Kilgore, TX 75663 | Gas Operator | Apr 2006 |
| 26361 | Rubber City Oil & Gas LLC | Louisville, OH 44641 | Oil & Gas Operator | Dec 2024 |
| 26362 | Rubicon Energy, L.L.C. | Arlington, TX 76006 | Oil & Gas Operator | Sep 1999 |
| 26363 | Rubicon Oil & Gas, LLC | Midland, TX 79701 | Oil & Gas Operator | Feb 2026 |
| 26364 | Rubis Oil, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Feb 2026 |
| 26365 | Ruby Breaux Gotreaux | | Oil Operator | Mar 1981 |
| 26366 | Ruby Drilling Company Inc | Gillette, WY 82718 | Oil Operator | Oct 2007 |
| 26367 | Ruby Operating Company, Inc | Clyde, TX 79510 | Oil & Gas Operator | Feb 2026 |
| 26368 | Ruby, Glen Et Al | | Oil & Gas Operator | Dec 1981 |
| 26369 | Rucker, Gary | Archer City, TX 76351 | Oil & Gas Operator | Dec 2003 |
| 26370 | Ruckus Energy Operating, LLC | San Antonio, TX 78257 | Oil & Gas Operator | Feb 2026 |
| 26371 | Ruda Exploration Inc | Atwood, KS 67730 | Oil Operator | Sep 2025 |
| 26372 | Rude Crude | | Oil Operator | Sep 2025 |
| 26373 | Rudman Partnership, The | Dallas, TX 75201 | Oil & Gas Operator | Dec 2014 |
| 26374 | Rudman Resources, Inc. | | Oil Operator | Jul 1981 |
| 26375 | Rue Johnny B | Duncan, OK 73533-2019 | Oil & Gas Operator | Jan 2025 |
| 26376 | Ruff | Albany, TX 76430 | Oil & Gas Operator | Aug 2017 |
| 26377 | Ruff Drilling Company | Albany, TX 76430 | Oil & Gas Operator | Dec 2019 |
| 26378 | Ruff Oil Co. | Albany, TX 76430 | Oil Operator | Feb 2026 |
| 26379 | Ruffner Clair L III | Marion Center, PA 15759-7818 | Gas Operator | Dec 2025 |
| 26380 | Ruffner Petroleum Corp | Akron, OH 44308 | Oil & Gas Operator | Dec 2000 |
| 26381 | Ruh Oil Company | Collinsville, OK 74021 | Oil & Gas Operator | Dec 2025 |
| 26382 | Rumble Energy LLC | Skiatook, OK 74070 | Oil & Gas Operator | Feb 2026 |
| 26383 | Rumley Robert A & Associates | Tulsa, OK 74135-1907 | Oil Operator | Dec 2025 |
| 26384 | Runion Oil, Inc. | Boerne, TX 78006 | Oil & Gas Operator | Aug 2003 |
| 26385 | Running Foxes Petroleum Inc. | Centennial, CO 80112 | Oil & Gas Operator | Sep 2025 |
| 26386 | Running Horse Production Co. | Ignacio, CO 81137 | Gas Operator | Jun 2016 |
| 26387 | Running WP Oil, LLC | Loving, TX 76460 | Oil Operator | Feb 2026 |
| 26388 | Rupe Oil Company Inc | Wichita, KS 67278 | Oil & Gas Operator | Sep 2025 |
| 26389 | Rush Creek Operating LLC | McKinney, TX 75070 | Oil & Gas Operator | Feb 2026 |
| 26390 | Rush Oil & Gas C | | Oil Operator | Dec 1995 |
| 26391 | Rush, Charles Ray | Graham, TX 76450 | Oil & Gas Operator | Aug 2003 |
| 26392 | Rush, Terry L. | Wakeeney, KS 67672 | Oil Operator | Sep 2025 |
| 26393 | Rush-Andrus Engineering | Royse City, TX 75189-1210 | Oil & Gas Operator | Feb 2022 |
| 26394 | Rushing Oil Co. | San Antonio, TX 78213 | Oil & Gas Operator | Feb 2026 |
| 26395 | Rushmore & Tresn | | Oil Operator | Jan 1995 |
| 26396 | Rusk Co. Well Service Co., Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Feb 2026 |
| 26397 | Rusk Energy Management, LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2008 |
| 26398 | Rusk Energy Operating LLC | Houston, TX 77040 | Oil & Gas Operator | Feb 2026 |
| 26399 | Rusk Production Inc. | Iowa Park, TX 76367 | Oil & Gas Operator | Feb 2026 |
| 26400 | Ruskin H Meyer Et Al | | Oil Operator | Sep 1987 |