| 25001 | Royal Texan Resources Co. | Breckenridge, TX 76424 | Oil & Gas Operator | Sep 2026 |
| 25002 | Royal Texas Petroleum | Lago VIsta, TX 78645 | Oil & Gas Operator | Sep 2026 |
| 25003 | Royale Energy Inc | San Diego, CA 92108-4518 | Oil & Gas Operator | Jul 2026 |
| 25004 | Royale Operating Company | San Diego, CA 92108 | Oil & Gas Operator | Apr 1996 |
| 25005 | Royalton Gas & Oil Co | Brunswick, OH 44212 | Oil & Gas Operator | Dec 1990 |
| 25006 | Royalty Energy Development LLC | Edmond, OK 73003 | Oil & Gas Operator | Jun 2026 |
| 25007 | Royalty Land & Dev. Co., Inc. | Wolfforth, TX 79382 | Oil & Gas Operator | Sep 2026 |
| 25008 | Royalty Management & Dev Corp. | | Oil & Gas Operator | Apr 1998 |
| 25009 | Royalty Operating, Inc. | Richardson, TX 75081 | Oil & Gas Operator | Nov 2007 |
| 25010 | Royalty Petroleum Company | Oklahoma City, OK 73120 | Gas Operator | Feb 2002 |
| 25011 | Royalty Resources, L.L.C. | Midland, TX 79702 | Oil & Gas Operator | Sep 2026 |
| 25012 | Roye Realty & Developing Inc | Stigler, OK 74462-0148 | Gas Operator | Dec 2004 |
| 25013 | Royko Oil Company | Horseshoe Bay, TX 78657 | Oil & Gas Operator | Sep 2026 |
| 25014 | Rozel Operating Company | | Oil & Gas Operator | Oct 2014 |
| 25015 | Rozen H H | | Oil Operator | Aug 2022 |
| 25016 | Rozuk, Claudia | Millersburg, OH 44654 | Gas Operator | Dec 2025 |
| 25017 | Rozzlle Operating Company, LLC | Blackwell, TX 79506 | Oil & Gas Operator | Sep 2026 |
| 25018 | RP Operating, L.L.C. | Houston, TX 77002 | Oil & Gas Operator | Sep 2026 |
| 25019 | Rpa Energy LLC | Ada, OK 74820 | Oil Operator | May 2026 |
| 25020 | RPG Operating LLC | MC Queeney, TX 78123 | Oil Operator | Sep 2026 |
| 25021 | RPJ Fund Management Inc | St. Paul, MN 55101 | Oil & Gas Operator | Dec 1991 |
| 25022 | RPM Operating Company | New Braunfels, TX 78131 | Oil & Gas Operator | Mar 2008 |
| 25023 | RPM Petroleum, LLC | Oklahoma City, OK 73120 | Oil & Gas Operator | Apr 2013 |
| 25024 | RPS Energy, Inc. | | Oil & Gas Operator | Jul 2020 |
| 25025 | RR Oil Well Operations LLC | Ringwood, OK 73768 | Oil & Gas Operator | Jun 2026 |
| 25026 | RR Ventures Limited Partnership | San Antonio, TX 78239 | Oil & Gas Operator | Sep 2026 |
| 25027 | RRCH Corp. | Longview, TX 75606 | Oil & Gas Operator | Dec 2013 |
| 25028 | RRG Operating, LLC | Odessa, TX 79760 | Oil & Gas Operator | Sep 2026 |
| 25029 | RRKK LLC | Columbus, OH 43214-3072 | Oil Operator | Dec 2025 |
| 25030 | RRP Operating LLC | Houston, TX 77046 | Oil & Gas Operator | Sep 2026 |
| 25031 | RRR Exploration, Inc. | Dallas, TX 75247 | Oil & Gas Operator | May 1994 |
| 25032 | RS Gas Co Inc | Sprankle Mills, PA 15776-8312 | Gas Operator | Dec 2025 |
| 25033 | RSC Energy Corp | Brooklyn HTS, OH 44109 | Oil & Gas Operator | Dec 1984 |
| 25034 | RSC Resources Limited Partnership | Midland, TX 79707 | Oil & Gas Operator | Apr 2013 |
| 25035 | RSD Minerals LLC | Wichita, KS 67206 | Oil Operator | Mar 2026 |
| 25036 | Rse, Inc. | Houston, TX 77077 | Oil & Gas Operator | Sep 2000 |
| 25037 | RSP Permian, LLC | Midland, TX 79701 | Oil & Gas Operator | Jul 2018 |
| 25038 | Rta Petroleum, LLC | | Oil Operator | Dec 2025 |
| 25039 | RTB Oil Inc | Crescent, OK 73028-0686 | Oil Operator | May 2016 |
| 25040 | RTC Resources Inc | Midland, TX 79702 | Oil & Gas Operator | Aug 2003 |
| 25041 | RTC Resources, LLP | Weatherford, OK 73096 | Oil & Gas Operator | Sep 2026 |
| 25042 | RTD Inc | Bartlesville, OK 74006 | Oil Operator | Jan 1995 |
| 25043 | RTD Resources, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Sep 2026 |
| 25044 | Rto Operating, LLC | San Antonio, TX 78212 | Oil Operator | Feb 2016 |
| 25045 | RTR Legacy Oil, LLC | Weatherford, TX 76087 | Oil Operator | Sep 2026 |
| 25046 | RTZ Energy, LLC | Kilgore, TX 75663 | Gas Operator | Apr 2006 |
| 25047 | Rubber City Oil & Gas LLC | Louisville, OH 44641 | Oil & Gas Operator | Dec 2025 |
| 25048 | Rubicon Oil & Gas, LLC | Midland, TX 79701 | Oil & Gas Operator | Sep 2026 |
| 25049 | Rubis Oil, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Sep 2026 |
| 25050 | Ruby Breaux Gotreaux | | Oil Operator | Mar 1981 |
| 25051 | Ruby Drilling Company Inc | Gillette, WY 82718 | Oil Operator | Oct 2007 |
| 25052 | Ruby Operating Company, Inc | Clyde, TX 79510 | Oil & Gas Operator | Sep 2026 |
| 25053 | Ruby, Glen Et Al | | Oil & Gas Operator | Dec 1981 |
| 25054 | Rucker, Gary | Archer City, TX 76351 | Oil & Gas Operator | Dec 2003 |
| 25055 | Ruckus Energy Operating, LLC | San Antonio, TX 78257 | Oil & Gas Operator | Sep 2026 |
| 25056 | Ruda Exploration Inc | Atwood, KS 67730 | Oil Operator | Apr 2026 |
| 25057 | Rude Crude | | Oil Operator | Apr 2026 |
| 25058 | Rudman Partnership, The | Dallas, TX 75201 | Oil & Gas Operator | Dec 2014 |
| 25059 | Rudman Resources, Inc. | | Oil Operator | Jul 1981 |
| 25060 | Rue Johnny B | Duncan, OK 73533-2019 | Oil & Gas Operator | Oct 2025 |
| 25061 | Ruff | Albany, TX 76430 | Oil & Gas Operator | Aug 2017 |
| 25062 | Ruff Drilling Company | Albany, TX 76430 | Oil & Gas Operator | Dec 2019 |
| 25063 | Ruff Oil Co. | Albany, TX 76430 | Oil Operator | Sep 2026 |
| 25064 | Ruffner Clair L III | Marion Center, PA 15759-7818 | Gas Operator | Dec 2025 |
| 25065 | Ruffner Petroleum Corp | Akron, OH 44308 | Oil & Gas Operator | Dec 2000 |
| 25066 | Ruh Oil Company | Collinsville, OK 74021 | Oil & Gas Operator | May 2026 |
| 25067 | Rumble Energy LLC | Skiatook, OK 74070 | Oil & Gas Operator | Sep 2026 |
| 25068 | Rumley Robert A & Associates | Tulsa, OK 74135-1907 | Oil Operator | Jun 2026 |
| 25069 | Rumsey, Travis J. | Van Etten, NY 14889 | Gas Operator | Dec 2025 |
| 25070 | Runion Oil, Inc. | Boerne, TX 78006 | Oil & Gas Operator | Aug 2003 |
| 25071 | Running Foxes Petroleum Inc. | Centennial, CO 80112 | Oil & Gas Operator | Apr 2026 |
| 25072 | Running Horse Production Co. | Ignacio, CO 81137 | Gas Operator | Jun 2016 |
| 25073 | Running WP Oil, LLC | Loving, TX 76460 | Oil Operator | Sep 2026 |
| 25074 | Rupe Oil Company Inc | Wichita, KS 67278 | Oil & Gas Operator | Apr 2026 |
| 25075 | Rush Creek Operating LLC | McKinney, TX 75070 | Oil & Gas Operator | Sep 2026 |
| 25076 | Rush Oil & Gas C | | Oil Operator | Dec 1995 |
| 25077 | Rush, Charles Ray | Graham, TX 76450 | Oil & Gas Operator | Aug 2003 |
| 25078 | Rush, Terry L. | Wakeeney, KS 67672 | Oil Operator | Apr 2026 |
| 25079 | Rush-Andrus Engineering | Royse City, TX 75189-1210 | Oil & Gas Operator | Feb 2022 |
| 25080 | Rushing Oil Co. | San Antonio, TX 78213 | Oil & Gas Operator | Sep 2026 |
| 25081 | Rushmore & Tresn | | Oil Operator | Jan 1995 |
| 25082 | Rusk Co. Well Service Co., Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Sep 2026 |
| 25083 | Rusk Energy Management, LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2008 |
| 25084 | Rusk Energy Operating LLC | Houston, TX 77040 | Oil & Gas Operator | Sep 2026 |
| 25085 | Rusk Production Inc. | Iowa Park, TX 76367 | Oil & Gas Operator | Sep 2026 |
| 25086 | Ruskin H Meyer Et Al | | Oil Operator | Sep 1987 |
| 25087 | Russ Holden Well SVC | Sheffield, PA 16347-2904 | Oil & Gas Operator | Dec 2025 |
| 25088 | Russco Energy In | | Oil Operator | Jun 1994 |
| 25089 | Russco Energy, Inc. | Gladstone, MO 64118 | Oil Operator | Apr 2002 |
| 25090 | Russell - FT. Trinidad Op., LLC | Tyler, TX 75710 | Oil & Gas Operator | Sep 2026 |
| 25091 | Russell A. Flowers | | Oil Operator | May 1995 |
| 25092 | Russell Bros. Oil & Gas, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Sep 2026 |
| 25093 | Russell Brothers Oil & Gas | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2004 |
| 25094 | Russell Carl G | Coweta, OK 74429 | Oil & Gas Operator | Mar 2015 |
| 25095 | Russell D Meloy Oil & Gas Co | Enid, OK 73703-1623 | Oil & Gas Operator | May 2026 |
| 25096 | Russell E Snider LLC | Newark, OH 43055 | Oil Operator | Dec 2025 |
| 25097 | Russell Gas Co., LLC | Hugoton, KS 67451 | Gas Operator | Apr 2026 |
| 25098 | Russell James E | | Oil Operator | Apr 1994 |
| 25099 | Russell Oil Company | Haskell, OK 74436 | Oil & Gas Operator | Apr 2014 |
| 25100 | Russell Oil, Inc. | Edmond, OK 73083 | Oil Operator | Apr 2026 |