| 25101 | Roberts & Bunch Resources | | Oil & Gas Operator | Dec 1993 |
| 25102 | Roberts & Hammack, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Jun 2025 |
| 25103 | Roberts & Murphy | | Oil & Gas Operator | Sep 1995 |
| 25104 | Roberts & Murphy, Inc. | Shreveport, LA 71137 | Oil & Gas Operator | Apr 2016 |
| 25105 | Roberts & Roberts Enterprise,Inc | Levelland, TX 79336 | Oil & Gas Operator | Jun 1996 |
| 25106 | Roberts Brothers | | Oil Operator | Oct 1993 |
| 25107 | Roberts Herman | Henderson, NV 89014 | Oil Operator | Jul 2023 |
| 25108 | Roberts Oil Corp. | | Oil & Gas Operator | Sep 1982 |
| 25109 | Roberts Resources, Inc. | Wichita, KS 67275 | Oil & Gas Operator | Feb 2025 |
| 25110 | Roberts Zetau J Fisk | Moore, OK 73160 | Oil & Gas Operator | Sep 1993 |
| 25111 | Roberts, Charles J. | Alden, NY 14004 | Gas Operator | Dec 2023 |
| 25112 | Roberts, Harry S &/Or McKinley Ray | Paintsville, KY 41240 | Oil & Gas Operator | Dec 2019 |
| 25113 | Roberts, Jeffrey L | Glenville, WV 26351-0000 | Gas Operator | Dec 2021 |
| 25114 | Roberts, Oliver M | | Oil & Gas Operator | Dec 2021 |
| 25115 | Roberts, Randy | Sedan, KS 67361 | Oil & Gas Operator | Feb 2025 |
| 25116 | Roberts, Robert S. Dba K & R Operating Co. | | Gas Operator | Dec 2021 |
| 25117 | Roberts, Wayne & Janet | | Oil & Gas Operator | Dec 2021 |
| 25118 | Robertson Energy, LLC | | Oil & Gas Operator | Dec 2024 |
| 25119 | Robertson Farms, LLC | Calhoun, KY 42327 | Oil Operator | Dec 2023 |
| 25120 | Robertson Jay Estate | Tulsa, OK 74127-3029 | Oil & Gas Operator | Jul 2013 |
| 25121 | Robertson Johnie J | Okmulgee, OK 74447-8765 | Oil & Gas Operator | Mar 2025 |
| 25122 | Robertson Resources, Inc. | Midland, TX 79708 | Oil & Gas Operator | Jun 2025 |
| 25123 | Robertson, David | Bowling Green, KY 42103 | Oil Operator | Dec 2023 |
| 25124 | Robertson, French M. Oil Co. | Abilene, TX 79608 | Oil & Gas Operator | Mar 1995 |
| 25125 | Robertson, Gene Oil Co. | Burkburnett, TX 76354 | Oil & Gas Operator | Jul 1998 |
| 25126 | Robertson, Richard | Tulsa, OK 74127 | Gas Operator | Feb 2025 |
| 25127 | Robertson, T. L. Operating Co. | Cross Plains, TX 76443 | Oil & Gas Operator | May 2004 |
| 25128 | Robertson-Bryce Management, LLC | Tyler, TX 75701 | Oil & Gas Operator | Jun 2025 |
| 25129 | Robie A. Bridges III | | Oil Operator | Aug 1993 |
| 25130 | Robin Of Perryton Corporation | Perryton, TX 79070 | Oil & Gas Operator | Jun 2025 |
| 25131 | Robin Of Perryton, Inc. | Perryton, TX 79070 | Oil & Gas Operator | Dec 1995 |
| 25132 | Robin, Jack, Co. | Corpus Chrsti, TX 78410 | Oil & Gas Operator | Dec 2017 |
| 25133 | Robinett Resources Inc. | Longview, TX 75601 | Oil & Gas Operator | Dec 1999 |
| 25134 | Robinette Oil Company LLC | Chanute, KS 66720 | Oil Operator | Feb 2025 |
| 25135 | Robinowitz Oil C | | Oil Operator | Dec 1996 |
| 25136 | Robinowitz Oil Company | Tulsa, OK 74136-1429 | Oil & Gas Operator | Feb 2023 |
| 25137 | Robinowitz Oil Company, A General Partnership | Tulsa, OK 74136 | Oil & Gas Operator | Feb 2023 |
| 25138 | Robinson Brothers Drilling Co | | Oil & Gas Operator | Jul 2002 |
| 25139 | Robinson Drilling Of Texas | Big Spring, TX 79721 | Oil & Gas Operator | Oct 1996 |
| 25140 | Robinson Energy & Exploration, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Aug 2008 |
| 25141 | Robinson Engineering & Oil Company, Inc | Evansville, IN 47716 | Oil & Gas Operator | Dec 2022 |
| 25142 | Robinson Oil & Gas, Inc. | Chico, TX 76431 | Oil & Gas Operator | Aug 2003 |
| 25143 | Robinson Oil Co. | Graham, TX 76450 | Oil & Gas Operator | Jun 2025 |
| 25144 | Robinson Oil Com | | Oil & Gas Operator | Feb 1995 |
| 25145 | Robinson Oil Company, LLC | Billings, MT 59103 | Gas Operator | Dec 2015 |
| 25146 | Robinson Oil Inc | Eunice, NM 88231 | Oil & Gas Operator | Jun 2015 |
| 25147 | Robinson Operating Company | Abilene, TX 79604 | Oil & Gas Operator | Aug 2012 |
| 25148 | Robinson Resource Dev. Co.Inc. | | Oil & Gas Operator | Oct 1982 |
| 25149 | Robinson Tracy D | Duncan, OK 73534 | Oil Operator | Oct 2018 |
| 25150 | Robinson'S Oil Inc. | Alfred Station, NY 14803 | Oil & Gas Operator | Dec 2023 |
| 25151 | Robinson, Beryl A. | Peru, KS 67360 | Oil & Gas Operator | Mar 2012 |
| 25152 | Robinson, Gary D | | Oil Operator | Feb 2025 |
| 25153 | Robinson, Irvin | Abilene, TX 79608 | Oil & Gas Operator | May 1999 |
| 25154 | Robison, J. H. & Assoc. LTD. | Corpus Chrsti, TX 78413 | Oil & Gas Operator | Apr 1996 |
| 25155 | Robison, L. E. Oil | Yates Center, KS 66783 | Oil Operator | Sep 2001 |
| 25156 | Robl-Six, Inc. | Ellinwood, KS 67526 | Oil Operator | Dec 2019 |
| 25157 | Roblyn Oil Inc | Allen, OK 74825-6933 | Oil & Gas Operator | Nov 2024 |
| 25158 | Roblyn Petroleum Corp. | | Oil & Gas Operator | May 1983 |
| 25159 | Robson & Shults Prod Corp | Mannford, OK 74044 | Oil & Gas Operator | Jun 1995 |
| 25160 | Robson Petroleum Company | Tulsa, OK 74104 | Oil & Gas Operator | Jan 1995 |
| 25161 | Robson Resources Inc | Tulsa, OK 74104 | Oil & Gas Operator | May 1998 |
| 25162 | Robuck Petroleum, LLC | Nacogdoches, TX 75965 | Oil & Gas Operator | Jun 2025 |
| 25163 | Roc Energy, Inc. | Midland, TX 79710 | Oil & Gas Operator | Feb 2013 |
| 25164 | Roc Operating, Inc. | Plano, TX 75093 | Oil & Gas Operator | Oct 2008 |
| 25165 | Roca Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | Jun 2025 |
| 25166 | Roca Production, Inc. | Fort Worth, TX 76107 | Oil & Gas Operator | Jun 2025 |
| 25167 | Roca Resource Company, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 25168 | Rocanville Corporation | Dallas, TX 75225 | Oil & Gas Operator | Dec 2016 |
| 25169 | Rocc Oil & Gas, L.P. | Houston, TX 77084 | Oil & Gas Operator | Apr 2024 |
| 25170 | Rocc Operating, LLC | Houston, TX 77084 | Oil & Gas Operator | Jun 2025 |
| 25171 | Roche, E. Michael | Elma, NY 14059 | Gas Operator | Dec 2023 |
| 25172 | Rochelle Oil & Gas | Gillette, WY 82717 | Oil & Gas Operator | Mar 2024 |
| 25173 | Rochez, Mary B. | East Amherst, NY 14051 | Gas Operator | Dec 2023 |
| 25174 | Rocinante | Houston, TX 77058 | Oil Operator | Jun 2025 |
| 25175 | Rock Bottom Oil LLC | | Oil Operator | Dec 2024 |
| 25176 | Rock Bottom Oil, GP, L.L.C. | Nacogdoches, TX 75963 | Oil & Gas Operator | Jun 2025 |
| 25177 | Rock Creek Crude, LLC | Morrill, KS 66515 | Oil Operator | Feb 2025 |
| 25178 | Rock Creek Energy Co | Ada, OK 74820-5725 | Oil Operator | Jul 2022 |
| 25179 | Rock Creek Oil Co. | Iowa Park, TX 76367 | Oil Operator | Mar 2008 |
| 25180 | Rock Creek Oil, Inc. | Dallas, TX 75225 | Oil & Gas Operator | Nov 2019 |
| 25181 | Rock Creek Resources LLC | Englewood, CO 80112 | Oil & Gas Operator | Dec 2021 |
| 25182 | Rock Energy Operating Company | | Oil & Gas Operator | Nov 2008 |
| 25183 | Rock Energy Resources, Inc. | Houston, TX 77056 | Oil & Gas Operator | Jun 2025 |
| 25184 | Rock Energy, Inc. | | Oil & Gas Operator | Sep 1992 |
| 25185 | Rock Fish Operating LLC | McKinney, TX 75070 | Oil & Gas Operator | Jun 2025 |
| 25186 | Rock Hill Operating | Burkburnett, TX 76354 | Oil & Gas Operator | Jun 2025 |
| 25187 | Rock Oil Company | Broken Arrow, OK 74014-6106 | Oil & Gas Operator | Mar 2025 |
| 25188 | Rock Oil Corporation | Lawrence, KS 66046 | Oil Operator | Oct 2004 |
| 25189 | Rock Oil, Inc. | | Oil Operator | Nov 1989 |
| 25190 | Rock Operating | Abilene, TX 79608 | Oil & Gas Operator | Jun 2025 |
| 25191 | Rock Petroleum, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Aug 2024 |
| 25192 | Rock Resources, Inc. | Corpus Chrsti, TX 78414 | Oil & Gas Operator | Jun 2025 |
| 25193 | Rock River Operating Inc | Laramie, WY 82070 | Oil & Gas Operator | Mar 2025 |
| 25194 | Rock Solid Operating, LLC | Southlake, TX 76092 | Oil Operator | Sep 2021 |
| 25195 | Rock Well Petroleum (U.S.), Inc. | Canada, 00100 | Oil & Gas Operator | Sep 2014 |
| 25196 | Rockbridge Oil & Gas | Houston, TX 77027 | Oil & Gas Operator | Mar 1990 |
| 25197 | Rockbridge Oil And Gas, Inc. | Houston, TX 77227 | Oil & Gas Operator | Nov 1997 |
| 25198 | Rockcliff Energy Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Jun 2025 |
| 25199 | Rockcliff Operating La LLC | | Oil & Gas Operator | Jul 2022 |
| 25200 | Rockcliff Operating New Mexico LLC | Houston, TX 77002 | Oil & Gas Operator | Oct 2018 |