| 9101 | Reeves County Systems, Inc. | Odessa, TX 79760 | Oil & Gas Operator | Aug 2019 |
| 9102 | Refined Products, Inc. | Beaumont, TX 77705 | Oil Operator | Jul 2025 |
| 9103 | Reflection Energy Search, Inc | Midland, TX 79702 | Oil Operator | Feb 2006 |
| 9104 | Regal Development Inc. | Eldorado, TX 76936 | Gas Operator | Jul 1996 |
| 9105 | Regal Energy Corporation | Rhome, TX 76078 | Oil & Gas Operator | Jul 2025 |
| 9106 | Regal Energy Operating, L.L.C. | Plano, TX 75024 | Oil & Gas Operator | Jul 2025 |
| 9107 | Regal Operating | Cisco, TX 76437 | Oil & Gas Operator | Mar 2008 |
| 9108 | Regal Petroleum Services | Euless, TX 76039 | Oil & Gas Operator | Aug 2002 |
| 9109 | Regency Energy, Inc. | Crystal City, TX 78839 | Oil & Gas Operator | Jul 2025 |
| 9110 | Regency Petroleum Co. | Irving, TX 75016 | Oil & Gas Operator | Aug 2002 |
| 9111 | Regency Petroleum Co. Of New Mex | Coppell, TX 75019 | Oil & Gas Operator | Apr 2008 |
| 9112 | Regent Oil & Gas Company, L.P. | Dallas, TX 75225 | Oil & Gas Operator | Sep 2006 |
| 9113 | Regions Energy LLC | Midland, TX 79702 | Oil & Gas Operator | Sep 2016 |
| 9114 | Regions Operating, LLC | Midland, TX 79702 | Oil & Gas Operator | May 2024 |
| 9115 | Rego Development Company, Inc. | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Apr 2002 |
| 9116 | Reh Energy, Inc. | Corpus Chrsti, TX 78413 | Oil & Gas Operator | Jul 2025 |
| 9117 | Reh Oil And Gas, LLC. | Pratt, KS 67124 | Oil & Gas Operator | Apr 2019 |
| 9118 | Rehoboth Oil & Gas LLC | Baytown, TX 77521 | Oil Operator | Oct 2011 |
| 9119 | Reichmann Petroleum Corp. | Grapevine, TX 76051 | Oil & Gas Operator | Jul 2025 |
| 9120 | Reilly, K. L. | Huntsville, TX 77342 | Oil Operator | Dec 2004 |
| 9121 | Rein Pusher Operating LLC | Brenham, TX 77834 | Oil & Gas Operator | Jul 2025 |
| 9122 | Reinecke Operating, LLC | Houston, TX 77024 | Oil & Gas Operator | Nov 2018 |
| 9123 | Reliance Energy, Inc. | Midland, TX 79701 | Oil & Gas Operator | Jul 2025 |
| 9124 | Reliance Oil And Gas, Inc. | Austin, TX 78748 | Oil Operator | Jun 2012 |
| 9125 | Reliance Operating Company | Midland, TX 79702 | Oil & Gas Operator | Feb 2000 |
| 9126 | Reliance Trusts | Dallas, TX 75244 | Oil & Gas Operator | Nov 1995 |
| 9127 | Reliant Exploration, LTD. | Houston, TX 77060 | Oil & Gas Operator | Sep 2002 |
| 9128 | Remarkable Operating Co. | Pampa, TX 79065 | Gas Operator | Jul 2019 |
| 9129 | Remco Oil & Gas Production,Inc. | Rio Grande Ci, TX 78582 | Oil & Gas Operator | Nov 2021 |
| 9130 | Remington Oil | South Bend, TX 76481 | Oil & Gas Operator | Mar 2008 |
| 9131 | Remnant Energy, Inc. | Perryton, TX 79070 | Oil & Gas Operator | Jul 2025 |
| 9132 | Remnant Oil Operating, LLC | Midland, TX 79704 | Oil & Gas Operator | Jul 2024 |
| 9133 | Remo, Inc. | Odessa, TX 79760 | Oil & Gas Operator | May 2003 |
| 9134 | Remora Management, LLC | The Woodlands, TX 77382 | Oil & Gas Operator | Jul 2025 |
| 9135 | Remora Operating LLC | Houston, TX 77056 | Oil & Gas Operator | Jul 2025 |
| 9136 | Remuda Operating Company | Midland, TX 79711 | Oil & Gas Operator | Jul 2025 |
| 9137 | Renaissance Petroleum Co LLC | Houston, TX 77058 | Oil & Gas Operator | Nov 2011 |
| 9138 | Renaud Oil Corporation | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 9139 | Rendova Oil Company, Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 2002 |
| 9140 | Reneau Oil Co. | Shamrock, TX 79079 | Oil & Gas Operator | Jul 2025 |
| 9141 | Reneau, James R. | Shamrock, TX 79079 | Gas Operator | Oct 2001 |
| 9142 | Reneau, James Seed Co. | Shamrock, TX 79079 | Oil & Gas Operator | Jul 2025 |
| 9143 | Reneau, Nelda York | Snyder, TX 79549 | Oil & Gas Operator | Jul 2025 |
| 9144 | Renegade Operating Company | Aurora, CO 80016 | Oil & Gas Operator | Aug 2023 |
| 9145 | Renegade Operating Company, LLC | Abilene, TX 79608 | Oil Operator | Oct 2006 |
| 9146 | Renuergy LLC | Houston, TX 77024 | Oil & Gas Operator | Jan 2024 |
| 9147 | Reo Operating LLC | Austin, TX 78747 | Oil & Gas Operator | Jul 2025 |
| 9148 | Reostar Operating Incorporated | Fort Worth, TX 76107 | Oil & Gas Operator | Sep 2012 |
| 9149 | Repsol Eagle Ford North, LLC | The Woodlands, TX 77381 | Oil & Gas Operator | Jul 2023 |
| 9150 | Repsol Oil & Gas USA, LLC | The Woodlands, TX 77381 | Oil & Gas Operator | Jul 2025 |
| 9151 | Republic Energy Inc. | Decatur, TX 76234 | Oil & Gas Operator | Dec 2016 |
| 9152 | Republic Energy Operating, LLC | Decatur, TX 76234 | Oil & Gas Operator | Jan 2016 |
| 9153 | Republic Resources, LLC. | San Antonio, TX 78212 | Oil & Gas Operator | Jul 2025 |
| 9154 | Resaca Operating Company | Houston, TX 77010 | Oil & Gas Operator | Sep 2013 |
| 9155 | Resaca Resources, L.L.C. | Austin, TX 78746 | Oil & Gas Operator | Jul 2025 |
| 9156 | Research Exploration, LLC | Kingwood, TX 77339 | Oil & Gas Operator | Feb 2018 |
| 9157 | Reserve Acquisition Group | Tulsa, OK 74153 | Oil & Gas Operator | Dec 1993 |
| 9158 | Reserve Management, Inc. | Tyler, TX 75711 | Oil & Gas Operator | Jul 2025 |
| 9159 | Reserve Operating Corp. | Houston, TX 77040 | Oil & Gas Operator | Jul 2025 |
| 9160 | Reserve Production, Inc. | Tyler, TX 75713 | Oil & Gas Operator | Mar 2008 |
| 9161 | Resolute Natural Res. Co., LLC | Midland, TX 79706 | Oil & Gas Operator | Jul 2025 |
| 9162 | Resolute Natural Resources Co., LLC | Denver, CO 80203 | Oil & Gas Operator | Feb 2017 |
| 9163 | Resource Expl & Prod, Inc. | Salado, TX 76571 | Oil & Gas Operator | Jul 2025 |
| 9164 | Resource Management Company | Fredericksbrg, TX 78624 | Oil & Gas Operator | Feb 2015 |
| 9165 | Resource Oil And Gas, LLC | Oklahoma City, OK 73114 | Oil & Gas Operator | Jul 2025 |
| 9166 | Resource Operating Company | Abilene, TX 79601 | Oil & Gas Operator | Jul 1997 |
| 9167 | Ress Production Co. | Farmington, NM 87499 | Oil & Gas Operator | Jul 2025 |
| 9168 | Restoration Energy LLC | Amarillo, TX 79124 | Oil & Gas Operator | Jul 2025 |
| 9169 | Restore Operating LLC | Andrews, TX 79714 | Oil & Gas Operator | Jul 2025 |
| 9170 | Retama Oil Corporation | Uvalde, TX 78801 | Oil & Gas Operator | Jul 2025 |
| 9171 | Retamco Operating Inc | Red Lodge, MT 59068 | Oil & Gas Operator | May 2025 |
| 9172 | Reunion Energy Company | Houston, TX 77056 | Oil & Gas Operator | May 1996 |
| 9173 | Revard Petroleum, L.L.C. | Tulsa, OK 74170 | Oil & Gas Operator | Jul 2025 |
| 9174 | Reveille Resources | Houston, TX 77084 | Oil & Gas Operator | Apr 2011 |
| 9175 | Reveille Resources (Texas), Inc. | Houston, TX 77084 | Oil & Gas Operator | Jan 2013 |
| 9176 | Revelation Oil & Gas LLC | Dumas, TX 79029 | Oil & Gas Operator | Jul 2025 |
| 9177 | Reverence Operating LLC | Odessa, TX 79768 | Oil & Gas Operator | Jul 2025 |
| 9178 | Revier Resources Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Oct 2005 |
| 9179 | Revier, J. B. Prod. Company | Wichita Falls, TX 76302 | Oil & Gas Operator | Apr 1996 |
| 9180 | Revilo Exploration, Inc. | Richardson, TX 75081 | Oil & Gas Operator | Jul 2021 |
| 9181 | Revolution Operating Company,LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Jul 2024 |
| 9182 | Rex Energy Operating Corp. | State College, PA 16801 | Oil & Gas Operator | Jun 2012 |
| 9183 | Rex Oil, A Texas Partnership | Hondo, TX 78861 | Oil & Gas Operator | May 2003 |
| 9184 | Rexcom, Inc. | San Antonio, TX 78217 | Oil & Gas Operator | Jul 2025 |
| 9185 | Reynolds Drilling Co., Inc. | Shreveport, LA 71105 | Oil & Gas Operator | Jul 2025 |
| 9186 | Reynolds E & P, Inc. | Shreveport, LA 71105 | Oil & Gas Operator | Jul 2025 |
| 9187 | Reynolds, E. P., Jr. | Graham, TX 76450 | Oil & Gas Operator | Jul 2025 |
| 9188 | Reynolds, J. C. & W. F. | Wichita Falls, TX 76301 | Oil & Gas Operator | Jul 2025 |
| 9189 | Reynolds, Richard | Seymour, TX 76380 | Oil & Gas Operator | Mar 2008 |
| 9190 | Rfe Operating, LLC | Tyler, TX 75703 | Oil & Gas Operator | Jul 2025 |
| 9191 | RGX Energy LLC | Plano, TX 75025 | Oil & Gas Operator | Oct 2019 |
| 9192 | RHB Exploration & Production,LLC | Grapevine, TX 76099 | Oil & Gas Operator | Jul 2025 |
| 9193 | RHC Energy (USA) LLC | Houston, TX 77027 | Oil Operator | Jul 2025 |
| 9194 | Rheaco Oil Company, LTD. | Sourlake, TX 77659 | Oil Operator | Jul 2025 |
| 9195 | Rheata Resources, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Jul 2025 |
| 9196 | Rhodes Disposal, Inc. | Bryson, TX 76427 | Oil Operator | Jul 2025 |
| 9197 | Rhodes Drilling Company | Abilene, TX 79608 | Oil & Gas Operator | Sep 2000 |
| 9198 | Rhombus Operating Co., LTD | Littleton, CO 80160 | Oil & Gas Operator | Feb 2025 |
| 9199 | Rhonda Operating Company | Midland, TX 79710 | Oil & Gas Operator | Aug 2017 |
| 9200 | RHR Oil & Gas, LLC | Fort Worth, TX 76107 | Oil Operator | Jul 2025 |