| 25401 | Royale Energy Inc | San Diego, CA 92108-4518 | Oil & Gas Operator | May 2025 |
| 25402 | Royale Operating Company | San Diego, CA 92108 | Oil & Gas Operator | Apr 1996 |
| 25403 | Royalton Gas & Oil Co | Brunswick, OH 44212 | Oil & Gas Operator | Dec 1990 |
| 25404 | Royalty Energy Development LLC | Edmond, OK 73003 | Oil & Gas Operator | May 2025 |
| 25405 | Royalty Land & Dev. Co., Inc. | Wolfforth, TX 79382 | Oil & Gas Operator | Jul 2025 |
| 25406 | Royalty Management & Dev Corp. | | Oil & Gas Operator | Apr 1998 |
| 25407 | Royalty Operating, Inc. | Richardson, TX 75081 | Oil & Gas Operator | Nov 2007 |
| 25408 | Royalty Petroleum Company | Oklahoma City, OK 73120 | Gas Operator | Feb 2002 |
| 25409 | Royalty Resources, L.L.C. | Midland, TX 79702 | Oil & Gas Operator | Jul 2025 |
| 25410 | Roye Realty & Developing Inc | Stigler, OK 74462-0148 | Gas Operator | Dec 2004 |
| 25411 | Royko Oil Company | Horseshoe Bay, TX 78657 | Oil & Gas Operator | Jul 2025 |
| 25412 | Rozel Operating Company | | Oil & Gas Operator | Oct 2014 |
| 25413 | Rozen H H | | Oil Operator | Aug 2022 |
| 25414 | Rozuk, Claudia | Millersburg, OH 44654 | Gas Operator | Dec 2024 |
| 25415 | Rozzlle Operating Company, LLC | Blackwell, TX 79506 | Oil & Gas Operator | Jul 2025 |
| 25416 | RP Operating, L.L.C. | Houston, TX 77002 | Oil & Gas Operator | Jul 2025 |
| 25417 | Rpa Energy LLC | Ada, OK 74820 | Oil Operator | Apr 2025 |
| 25418 | RPG Operating LLC | MC Queeney, TX 78123 | Oil Operator | Jul 2025 |
| 25419 | RPJ Fund Management Inc | St. Paul, MN 55101 | Oil & Gas Operator | Dec 1991 |
| 25420 | RPM Operating Company | New Braunfels, TX 78131 | Oil & Gas Operator | Mar 2008 |
| 25421 | RPM Petroleum, LLC | Oklahoma City, OK 73120 | Oil & Gas Operator | Apr 2013 |
| 25422 | RPS Energy, Inc. | | Oil & Gas Operator | Jul 2020 |
| 25423 | RR Oil Well Operations LLC | Ringwood, OK 73768 | Oil & Gas Operator | May 2025 |
| 25424 | RR Ventures Limited Partnership | San Antonio, TX 78239 | Oil & Gas Operator | Jul 2025 |
| 25425 | RRCH Corp. | Longview, TX 75606 | Oil & Gas Operator | Dec 2013 |
| 25426 | RRG Operating, LLC | Odessa, TX 79760 | Oil & Gas Operator | Jul 2025 |
| 25427 | Rrig Exploration, LLC | Fort Worth, TX 76147 | Oil & Gas Operator | Jul 2025 |
| 25428 | RRKK LLC | Columbus, OH 43214-3072 | Oil Operator | Dec 2024 |
| 25429 | RRP Operating LLC | Houston, TX 77046 | Oil & Gas Operator | Jul 2025 |
| 25430 | RRR Exploration, Inc. | Dallas, TX 75247 | Oil & Gas Operator | May 1994 |
| 25431 | RS Gas Co Inc | Sprankle Mills, PA 15776-8312 | Gas Operator | Dec 2024 |
| 25432 | RSC Energy Corp | Brooklyn HTS, OH 44109 | Oil & Gas Operator | Dec 1984 |
| 25433 | RSC Resources Limited Partnership | Midland, TX 79707 | Oil & Gas Operator | Apr 2013 |
| 25434 | RSD Minerals LLC | Wichita, KS 67206 | Oil Operator | Oct 2024 |
| 25435 | Rse, Inc. | Houston, TX 77077 | Oil & Gas Operator | Sep 2000 |
| 25436 | RSP Permian, LLC | Midland, TX 79701 | Oil & Gas Operator | Jul 2018 |
| 25437 | Rta Petroleum, LLC | | Oil Operator | Dec 2024 |
| 25438 | RTB Oil Inc | Crescent, OK 73028-0686 | Oil Operator | May 2016 |
| 25439 | RTC Resources Inc | Midland, TX 79702 | Oil & Gas Operator | Aug 2003 |
| 25440 | RTC Resources, LLP | Weatherford, OK 73096 | Oil & Gas Operator | Jul 2025 |
| 25441 | RTD Inc | Bartlesville, OK 74006 | Oil Operator | Jan 1995 |
| 25442 | RTD Resources, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Jul 2025 |
| 25443 | Rto Operating, LLC | San Antonio, TX 78212 | Oil Operator | Feb 2016 |
| 25444 | RTZ Energy, LLC | Kilgore, TX 75663 | Gas Operator | Apr 2006 |
| 25445 | Rubber City Oil & Gas LLC | Louisville, OH 44641 | Oil & Gas Operator | Dec 2024 |
| 25446 | Rubicon Oil & Gas, LLC | Midland, TX 79701 | Oil & Gas Operator | Jul 2025 |
| 25447 | Rubis Oil, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Jul 2025 |
| 25448 | Ruby Breaux Gotreaux | | Oil Operator | Mar 1981 |
| 25449 | Ruby Drilling Company Inc | Gillette, WY 82718 | Oil Operator | Oct 2007 |
| 25450 | Ruby Operating Company, Inc | Clyde, TX 79510 | Oil & Gas Operator | Jul 2025 |
| 25451 | Ruby, Glen Et Al | | Oil & Gas Operator | Dec 1981 |
| 25452 | Rucker, Gary | Archer City, TX 76351 | Oil & Gas Operator | Dec 2003 |
| 25453 | Ruckus Energy Operating, LLC | San Antonio, TX 78257 | Oil & Gas Operator | Jul 2025 |
| 25454 | Ruda Exploration Inc | Atwood, KS 67730 | Oil Operator | Mar 2025 |
| 25455 | Rude Crude | | Oil Operator | Mar 2025 |
| 25456 | Rudman Partnership, The | Dallas, TX 75201 | Oil & Gas Operator | Dec 2014 |
| 25457 | Rudman Resources, Inc. | | Oil Operator | Jul 1981 |
| 25458 | Rue Johnny B | Duncan, OK 73533-2019 | Oil & Gas Operator | Jan 2025 |
| 25459 | Ruff | Albany, TX 76430 | Oil & Gas Operator | Aug 2017 |
| 25460 | Ruff Drilling Company | Albany, TX 76430 | Oil & Gas Operator | Dec 2019 |
| 25461 | Ruff Oil Co. | Albany, TX 76430 | Oil Operator | Jul 2025 |
| 25462 | Ruffner Clair L III | Marion Center, PA 15759-7818 | Gas Operator | Dec 2024 |
| 25463 | Ruffner Petroleum Corp | Akron, OH 44308 | Oil & Gas Operator | Dec 2000 |
| 25464 | Ruh Oil Company | Collinsville, OK 74021 | Oil & Gas Operator | Apr 2025 |
| 25465 | Rumble Energy LLC | Skiatook, OK 74070 | Oil & Gas Operator | Jul 2025 |
| 25466 | Rumley Robert A & Associates | Tulsa, OK 74135-1907 | Oil Operator | Apr 2025 |
| 25467 | Runion Oil, Inc. | Boerne, TX 78006 | Oil & Gas Operator | Aug 2003 |
| 25468 | Running Foxes Petroleum Inc. | Centennial, CO 80112 | Oil & Gas Operator | Mar 2025 |
| 25469 | Running Horse Production Co. | Ignacio, CO 81137 | Gas Operator | Jun 2016 |
| 25470 | Running WP Oil, LLC | Loving, TX 76460 | Oil Operator | Jul 2025 |
| 25471 | Rupe Oil Company, Inc. | Wichita, KS 67278 | Oil & Gas Operator | Mar 2025 |
| 25472 | Rush Creek Operating LLC | McKinney, TX 75070 | Oil & Gas Operator | Jul 2025 |
| 25473 | Rush Oil & Gas C | | Oil Operator | Dec 1995 |
| 25474 | Rush, Charles Ray | Graham, TX 76450 | Oil & Gas Operator | Aug 2003 |
| 25475 | Rush, Terry L. | Wakeeney, KS 67672 | Oil Operator | Feb 2025 |
| 25476 | Rush-Andrus Engineering | Royse City, TX 75189-1210 | Oil & Gas Operator | Feb 2022 |
| 25477 | Rushing Oil Co. | San Antonio, TX 78213 | Oil & Gas Operator | Jul 2025 |
| 25478 | Rushmore & Tresn | | Oil Operator | Jan 1995 |
| 25479 | Rusk Co. Well Service Co., Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Jul 2025 |
| 25480 | Rusk Energy Management, LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2008 |
| 25481 | Rusk Energy Operating LLC | Houston, TX 77040 | Oil & Gas Operator | Jul 2025 |
| 25482 | Rusk Production Inc. | Iowa Park, TX 76367 | Oil & Gas Operator | Jul 2025 |
| 25483 | Ruskin H Meyer Et Al | | Oil Operator | Sep 1987 |
| 25484 | Russ Holden Well SVC | Sheffield, PA 16347-2904 | Oil & Gas Operator | Dec 2024 |
| 25485 | Russco Energy In | | Oil Operator | Jun 1994 |
| 25486 | Russco Energy, Inc. | Gladstone, MO 64118 | Oil Operator | Apr 2002 |
| 25487 | Russell - FT. Trinidad Op., LLC | Tyler, TX 75710 | Oil & Gas Operator | Jul 2025 |
| 25488 | Russell A. Flowers | | Oil Operator | May 1995 |
| 25489 | Russell Bros. Oil & Gas, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Jul 2025 |
| 25490 | Russell Brothers Oil & Gas | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2004 |
| 25491 | Russell Carl G | Coweta, OK 74429 | Oil & Gas Operator | Mar 2015 |
| 25492 | Russell D Meloy Oil & Gas Co | Enid, OK 73703-1623 | Oil & Gas Operator | Apr 2025 |
| 25493 | Russell E Snider LLC | Newark, OH 43055 | Oil Operator | Dec 2024 |
| 25494 | Russell Gas Co., LLC | Hugoton, KS 67451 | Gas Operator | Mar 2025 |
| 25495 | Russell James E | | Oil Operator | Apr 1994 |
| 25496 | Russell Oil And Gas Company | Weston, WV 26452-0000 | Gas Operator | Dec 2021 |
| 25497 | Russell Oil Company | Haskell, OK 74436 | Oil & Gas Operator | Apr 2014 |
| 25498 | Russell Oil, Inc. | Edmond, OK 73083 | Oil Operator | Mar 2025 |
| 25499 | Russell Operating Company, LLC | Big Lake, TX 76932 | Oil Operator | Jul 2025 |
| 25500 | Russell Resources, Inc. | | Oil & Gas Operator | Dec 1998 |