| 25101 | RPJ Fund Management Inc | St. Paul, MN 55101 | Oil & Gas Operator | Dec 1991 |
| 25102 | RPM Operating Company | New Braunfels, TX 78131 | Oil & Gas Operator | Mar 2008 |
| 25103 | RPM Petroleum, LLC | Oklahoma City, OK 73120 | Oil & Gas Operator | Apr 2013 |
| 25104 | RPS Energy, Inc. | | Oil & Gas Operator | Jul 2020 |
| 25105 | RR Oil Well Operations LLC | Ringwood, OK 73768 | Oil & Gas Operator | May 2026 |
| 25106 | RR Ventures Limited Partnership | San Antonio, TX 78239 | Oil & Gas Operator | Jul 2026 |
| 25107 | RRCH Corp. | Longview, TX 75606 | Oil & Gas Operator | Dec 2013 |
| 25108 | RRG Operating, LLC | Odessa, TX 79760 | Oil & Gas Operator | Jul 2026 |
| 25109 | Rrig Exploration, LLC | Fort Worth, TX 76147 | Oil & Gas Operator | Jul 2026 |
| 25110 | RRKK LLC | Columbus, OH 43214-3072 | Oil Operator | Dec 2025 |
| 25111 | RRP Operating LLC | Houston, TX 77046 | Oil & Gas Operator | Jul 2026 |
| 25112 | RRR Exploration, Inc. | Dallas, TX 75247 | Oil & Gas Operator | May 1994 |
| 25113 | RS Gas Co Inc | Sprankle Mills, PA 15776-8312 | Gas Operator | Dec 2025 |
| 25114 | RSC Energy Corp | Brooklyn HTS, OH 44109 | Oil & Gas Operator | Dec 1984 |
| 25115 | RSC Resources Limited Partnership | Midland, TX 79707 | Oil & Gas Operator | Apr 2013 |
| 25116 | RSD Minerals LLC | Wichita, KS 67206 | Oil Operator | Mar 2026 |
| 25117 | Rse, Inc. | Houston, TX 77077 | Oil & Gas Operator | Sep 2000 |
| 25118 | RSP Permian, LLC | Midland, TX 79701 | Oil & Gas Operator | Jul 2018 |
| 25119 | Rta Petroleum, LLC | | Oil Operator | Dec 2025 |
| 25120 | RTB Oil Inc | Crescent, OK 73028-0686 | Oil Operator | May 2016 |
| 25121 | RTC Resources Inc | Midland, TX 79702 | Oil & Gas Operator | Aug 2003 |
| 25122 | RTC Resources, LLP | Weatherford, OK 73096 | Oil & Gas Operator | Jul 2026 |
| 25123 | RTD Inc | Bartlesville, OK 74006 | Oil Operator | Jan 1995 |
| 25124 | RTD Resources, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Jul 2026 |
| 25125 | Rto Operating, LLC | San Antonio, TX 78212 | Oil Operator | Feb 2016 |
| 25126 | RTZ Energy, LLC | Kilgore, TX 75663 | Gas Operator | Apr 2006 |
| 25127 | Rubber City Oil & Gas LLC | Louisville, OH 44641 | Oil & Gas Operator | Dec 2025 |
| 25128 | Rubicon Oil & Gas, LLC | Midland, TX 79701 | Oil & Gas Operator | Jul 2026 |
| 25129 | Rubis Oil, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Jul 2026 |
| 25130 | Ruby Breaux Gotreaux | | Oil Operator | Mar 1981 |
| 25131 | Ruby Drilling Company Inc | Gillette, WY 82718 | Oil Operator | Oct 2007 |
| 25132 | Ruby Operating Company, Inc | Clyde, TX 79510 | Oil & Gas Operator | Jul 2026 |
| 25133 | Ruby, Glen Et Al | | Oil & Gas Operator | Dec 1981 |
| 25134 | Rucker, Gary | Archer City, TX 76351 | Oil & Gas Operator | Dec 2003 |
| 25135 | Ruckus Energy Operating, LLC | San Antonio, TX 78257 | Oil & Gas Operator | Jul 2026 |
| 25136 | Ruda Exploration Inc | Atwood, KS 67730 | Oil Operator | Mar 2026 |
| 25137 | Rude Crude | | Oil Operator | Mar 2026 |
| 25138 | Rudman Partnership, The | Dallas, TX 75201 | Oil & Gas Operator | Dec 2014 |
| 25139 | Rudman Resources, Inc. | | Oil Operator | Jul 1981 |
| 25140 | Rue Johnny B | Duncan, OK 73533-2019 | Oil & Gas Operator | Oct 2025 |
| 25141 | Ruff | Albany, TX 76430 | Oil & Gas Operator | Aug 2017 |
| 25142 | Ruff Drilling Company | Albany, TX 76430 | Oil & Gas Operator | Dec 2019 |
| 25143 | Ruff Oil Co. | Albany, TX 76430 | Oil Operator | Jul 2026 |
| 25144 | Ruffner Clair L III | Marion Center, PA 15759-7818 | Gas Operator | Dec 2025 |
| 25145 | Ruffner Petroleum Corp | Akron, OH 44308 | Oil & Gas Operator | Dec 2000 |
| 25146 | Ruh Oil Company | Collinsville, OK 74021 | Oil & Gas Operator | Apr 2026 |
| 25147 | Rumble Energy LLC | Skiatook, OK 74070 | Oil & Gas Operator | Jul 2026 |
| 25148 | Rumley Robert A & Associates | Tulsa, OK 74135-1907 | Oil Operator | Apr 2026 |
| 25149 | Rumsey, Travis J. | Van Etten, NY 14889 | Gas Operator | Dec 2025 |
| 25150 | Runion Oil, Inc. | Boerne, TX 78006 | Oil & Gas Operator | Aug 2003 |
| 25151 | Running Foxes Petroleum Inc. | Centennial, CO 80112 | Oil & Gas Operator | Mar 2026 |
| 25152 | Running Horse Production Co. | Ignacio, CO 81137 | Gas Operator | Jun 2016 |
| 25153 | Running WP Oil, LLC | Loving, TX 76460 | Oil Operator | Jul 2026 |
| 25154 | Rupe Oil Company Inc | Wichita, KS 67278 | Oil & Gas Operator | Mar 2026 |
| 25155 | Rush Creek Operating LLC | McKinney, TX 75070 | Oil & Gas Operator | Jul 2026 |
| 25156 | Rush Oil & Gas C | | Oil Operator | Dec 1995 |
| 25157 | Rush, Charles Ray | Graham, TX 76450 | Oil & Gas Operator | Aug 2003 |
| 25158 | Rush, Terry L. | Wakeeney, KS 67672 | Oil Operator | Mar 2026 |
| 25159 | Rush-Andrus Engineering | Royse City, TX 75189-1210 | Oil & Gas Operator | Feb 2022 |
| 25160 | Rushing Oil Co. | San Antonio, TX 78213 | Oil & Gas Operator | Jul 2026 |
| 25161 | Rushmore & Tresn | | Oil Operator | Jan 1995 |
| 25162 | Rusk Co. Well Service Co., Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Jul 2026 |
| 25163 | Rusk Energy Management, LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2008 |
| 25164 | Rusk Energy Operating LLC | Houston, TX 77040 | Oil & Gas Operator | Jul 2026 |
| 25165 | Rusk Production Inc. | Iowa Park, TX 76367 | Oil & Gas Operator | Jul 2026 |
| 25166 | Ruskin H Meyer Et Al | | Oil Operator | Sep 1987 |
| 25167 | Russ Holden Well SVC | Sheffield, PA 16347-2904 | Oil & Gas Operator | Dec 2025 |
| 25168 | Russco Energy In | | Oil Operator | Jun 1994 |
| 25169 | Russco Energy, Inc. | Gladstone, MO 64118 | Oil Operator | Apr 2002 |
| 25170 | Russell - FT. Trinidad Op., LLC | Tyler, TX 75710 | Oil & Gas Operator | Jul 2026 |
| 25171 | Russell A. Flowers | | Oil Operator | May 1995 |
| 25172 | Russell Bros. Oil & Gas, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Jul 2026 |
| 25173 | Russell Brothers Oil & Gas | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2004 |
| 25174 | Russell Carl G | Coweta, OK 74429 | Oil & Gas Operator | Mar 2015 |
| 25175 | Russell D Meloy Oil & Gas Co | Enid, OK 73703-1623 | Oil & Gas Operator | Apr 2026 |
| 25176 | Russell E Snider LLC | Newark, OH 43055 | Oil Operator | Dec 2025 |
| 25177 | Russell Gas Co., LLC | Hugoton, KS 67451 | Gas Operator | Mar 2026 |
| 25178 | Russell James E | | Oil Operator | Apr 1994 |
| 25179 | Russell Oil Company | Haskell, OK 74436 | Oil & Gas Operator | Apr 2014 |
| 25180 | Russell Oil, Inc. | Edmond, OK 73083 | Oil Operator | Mar 2026 |
| 25181 | Russell Operating Company, LLC | Big Lake, TX 76932 | Oil Operator | Jul 2026 |
| 25182 | Russell Resources, Inc. | | Oil & Gas Operator | Dec 1998 |
| 25183 | Russell, C. M. Oil Company | Lubbock, TX 79423 | Oil & Gas Operator | Jan 2008 |
| 25184 | Russell, Gerald W. | Tulsa, OK 74103 | Oil Operator | Feb 1986 |
| 25185 | Russell, John R | | Oil Operator | Mar 2025 |
| 25186 | Russell, L. J. Oil Company | Snyder, TX 79549 | Oil & Gas Operator | Jul 2026 |
| 25187 | Russell, Phillip | Colorado City, TX 79512 | Oil & Gas Operator | Jul 2026 |
| 25188 | Russell, T. Operating Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Aug 2005 |
| 25189 | Rust Oil Corp. | Fort Worth, TX 76121 | Oil & Gas Operator | Jul 2026 |
| 25190 | Rust Operating Co., Inc. | Fort Worth, TX 76108 | Oil & Gas Operator | Feb 2000 |
| 25191 | Rustler Energy LLC | Lindsay, OK 73052 | Oil & Gas Operator | Apr 2026 |
| 25192 | Ruth Oil Co, LLC | Eunice, NM 88231 | Oil Operator | Mar 2015 |
| 25193 | Ruth Oil Co. | Luling, TX 78648 | Oil & Gas Operator | Feb 2010 |
| 25194 | Ruthco Oil, LLC | Eunice, NM 88231 | Oil Operator | May 2008 |
| 25195 | Rutherford Oil Corporation | Houston, TX 77046 | Oil & Gas Operator | Jun 2019 |
| 25196 | Rutherford, Michael A. | Dallas, TX 75381 | Oil & Gas Operator | May 2000 |
| 25197 | Ruthson Energy, Inc. | Judson, TX 75660 | Oil Operator | Jul 2026 |
| 25198 | Rutledge, Kenny | Rising Star, TX 76471 | Oil & Gas Operator | Jul 2026 |
| 25199 | Rutledge, Rome | Wichita Falls, TX 76301 | Oil & Gas Operator | Apr 1997 |
| 25200 | Rutledge-Newsom | Graham, TX 76450 | Oil Operator | Jun 2025 |