| 9201 | Regal Operating | Cisco, TX 76437 | Oil & Gas Operator | Mar 2008 |
| 9202 | Regal Petroleum Services | Euless, TX 76039 | Oil & Gas Operator | Aug 2002 |
| 9203 | Regency Energy, Inc. | Crystal City, TX 78839 | Oil & Gas Operator | Apr 2025 |
| 9204 | Regency Petroleum Co. | Irving, TX 75016 | Oil & Gas Operator | Aug 2002 |
| 9205 | Regency Petroleum Co. Of New Mex | Coppell, TX 75019 | Oil & Gas Operator | Apr 2008 |
| 9206 | Regent Oil & Gas Company, L.P. | Dallas, TX 75225 | Oil & Gas Operator | Sep 2006 |
| 9207 | Regions Energy LLC | Midland, TX 79702 | Oil & Gas Operator | Sep 2016 |
| 9208 | Regions Operating, LLC | Midland, TX 79702 | Oil & Gas Operator | May 2024 |
| 9209 | Rego Development Company, Inc. | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Apr 2002 |
| 9210 | Reh Energy, Inc. | Corpus Chrsti, TX 78413 | Oil & Gas Operator | Apr 2025 |
| 9211 | Reh Oil And Gas, LLC. | Pratt, KS 67124 | Oil & Gas Operator | Apr 2019 |
| 9212 | Rehoboth Oil & Gas LLC | Baytown, TX 77521 | Oil Operator | Oct 2011 |
| 9213 | Reichmann Petroleum Corp. | Grapevine, TX 76051 | Oil & Gas Operator | Apr 2025 |
| 9214 | Reilly, K. L. | Huntsville, TX 77342 | Oil Operator | Dec 2004 |
| 9215 | Rein Pusher Operating LLC | Brenham, TX 77834 | Oil & Gas Operator | Apr 2025 |
| 9216 | Reinecke Operating, LLC | Houston, TX 77024 | Oil & Gas Operator | Nov 2018 |
| 9217 | Reliance Energy, Inc. | Midland, TX 79701 | Oil & Gas Operator | Apr 2025 |
| 9218 | Reliance Oil And Gas, Inc. | Austin, TX 78748 | Oil Operator | Jun 2012 |
| 9219 | Reliance Operating Company | Midland, TX 79702 | Oil & Gas Operator | Feb 2000 |
| 9220 | Reliance Trusts | Dallas, TX 75244 | Oil & Gas Operator | Nov 1995 |
| 9221 | Reliant Exploration, LTD. | Houston, TX 77060 | Oil & Gas Operator | Sep 2002 |
| 9222 | Remarkable Operating Co. | Pampa, TX 79065 | Gas Operator | Jul 2019 |
| 9223 | Remco Oil & Gas Production,Inc. | Rio Grande Ci, TX 78582 | Oil & Gas Operator | Nov 2021 |
| 9224 | Remington Oil | South Bend, TX 76481 | Oil & Gas Operator | Mar 2008 |
| 9225 | Remnant Energy, Inc. | Perryton, TX 79070 | Oil & Gas Operator | Apr 2025 |
| 9226 | Remnant Oil Operating, LLC | Midland, TX 79704 | Oil & Gas Operator | Jul 2024 |
| 9227 | Remo, Inc. | Odessa, TX 79760 | Oil & Gas Operator | May 2003 |
| 9228 | Remora Management, LLC | The Woodlands, TX 77382 | Oil & Gas Operator | Apr 2025 |
| 9229 | Remora Operating LLC | Houston, TX 77056 | Oil & Gas Operator | Apr 2025 |
| 9230 | Remuda Operating Company | Midland, TX 79711 | Oil & Gas Operator | Apr 2025 |
| 9231 | Renaissance Petroleum Co LLC | Houston, TX 77058 | Oil & Gas Operator | Nov 2011 |
| 9232 | Renaud Oil Corporation | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 9233 | Rendova Oil Company, Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 2002 |
| 9234 | Reneau Oil Co. | Shamrock, TX 79079 | Oil & Gas Operator | Apr 2025 |
| 9235 | Reneau, James R. | Shamrock, TX 79079 | Gas Operator | Oct 2001 |
| 9236 | Reneau, James Seed Co. | Shamrock, TX 79079 | Oil & Gas Operator | Apr 2025 |
| 9237 | Reneau, Nelda York | Snyder, TX 79549 | Oil & Gas Operator | Apr 2025 |
| 9238 | Renegade Operating Company | Aurora, CO 80016 | Oil & Gas Operator | Aug 2023 |
| 9239 | Renegade Operating Company, LLC | Abilene, TX 79608 | Oil Operator | Oct 2006 |
| 9240 | Renuergy LLC | Houston, TX 77024 | Oil & Gas Operator | Jan 2024 |
| 9241 | Reo Operating LLC | Austin, TX 78747 | Oil & Gas Operator | Apr 2025 |
| 9242 | Reostar Operating Incorporated | Fort Worth, TX 76107 | Oil & Gas Operator | Sep 2012 |
| 9243 | Repsol Eagle Ford North, LLC | The Woodlands, TX 77381 | Oil & Gas Operator | Jul 2023 |
| 9244 | Repsol Oil & Gas USA, LLC | The Woodlands, TX 77381 | Oil & Gas Operator | Apr 2025 |
| 9245 | Republic Energy Inc. | Decatur, TX 76234 | Oil & Gas Operator | Dec 2016 |
| 9246 | Republic Energy Operating, LLC | Decatur, TX 76234 | Oil & Gas Operator | Jan 2016 |
| 9247 | Republic Resources, LLC. | San Antonio, TX 78212 | Oil & Gas Operator | Apr 2025 |
| 9248 | Resaca Operating Company | Houston, TX 77010 | Oil & Gas Operator | Sep 2013 |
| 9249 | Resaca Resources, L.L.C. | Austin, TX 78746 | Oil & Gas Operator | Apr 2025 |
| 9250 | Research Exploration, LLC | Kingwood, TX 77339 | Oil & Gas Operator | Feb 2018 |
| 9251 | Reserve Acquisition Group | Tulsa, OK 74153 | Oil & Gas Operator | Dec 1993 |
| 9252 | Reserve Management, Inc. | Tyler, TX 75711 | Oil & Gas Operator | Apr 2025 |
| 9253 | Reserve Operating Corp. | Houston, TX 77040 | Oil & Gas Operator | Apr 2025 |
| 9254 | Reserve Production, Inc. | Tyler, TX 75713 | Oil & Gas Operator | Mar 2008 |
| 9255 | Resolute Natural Res. Co., LLC | Midland, TX 79706 | Oil & Gas Operator | Apr 2025 |
| 9256 | Resolute Natural Resources Co., LLC | Denver, CO 80203 | Oil & Gas Operator | Feb 2017 |
| 9257 | Resource Expl & Prod, Inc. | Salado, TX 76571 | Oil & Gas Operator | Apr 2025 |
| 9258 | Resource Management Company | Fredericksbrg, TX 78624 | Oil & Gas Operator | Feb 2015 |
| 9259 | Resource Oil And Gas, LLC | Oklahoma City, OK 73114 | Oil & Gas Operator | Apr 2025 |
| 9260 | Resource Operating Company | Abilene, TX 79601 | Oil & Gas Operator | Jul 1997 |
| 9261 | Ress Production Co. | Farmington, NM 87499 | Oil & Gas Operator | Apr 2025 |
| 9262 | Restoration Energy LLC | Amarillo, TX 79124 | Oil & Gas Operator | Apr 2025 |
| 9263 | Restore Operating LLC | Andrews, TX 79714 | Oil & Gas Operator | Apr 2025 |
| 9264 | Retama Oil Corporation | Uvalde, TX 78801 | Oil & Gas Operator | Apr 2025 |
| 9265 | Retamco Operating Inc | Red Lodge, MT 59068 | Oil & Gas Operator | Feb 2025 |
| 9266 | Reunion Energy Company | Houston, TX 77056 | Oil & Gas Operator | May 1996 |
| 9267 | Revard Petroleum, L.L.C. | Tulsa, OK 74170 | Oil & Gas Operator | Apr 2025 |
| 9268 | Reveille Resources | Houston, TX 77084 | Oil & Gas Operator | Apr 2011 |
| 9269 | Reveille Resources (Texas), Inc. | Houston, TX 77084 | Oil & Gas Operator | Jan 2013 |
| 9270 | Revelation Oil & Gas LLC | Dumas, TX 79029 | Oil & Gas Operator | Apr 2025 |
| 9271 | Reverence Operating LLC | Odessa, TX 79768 | Oil & Gas Operator | Apr 2025 |
| 9272 | Revier Resources Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Oct 2005 |
| 9273 | Revier, J. B. Prod. Company | Wichita Falls, TX 76302 | Oil & Gas Operator | Apr 1996 |
| 9274 | Revilo Exploration, Inc. | Richardson, TX 75081 | Oil & Gas Operator | Jul 2021 |
| 9275 | Revolution Operating Company,LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Jul 2024 |
| 9276 | Rex Energy Operating Corp. | State College, PA 16801 | Oil & Gas Operator | Jun 2012 |
| 9277 | Rex Oil, A Texas Partnership | Hondo, TX 78861 | Oil & Gas Operator | May 2003 |
| 9278 | Rexcom, Inc. | San Antonio, TX 78217 | Oil & Gas Operator | Apr 2025 |
| 9279 | Reynolds Drilling Co., Inc. | Shreveport, LA 71105 | Oil & Gas Operator | Apr 2025 |
| 9280 | Reynolds E & P, Inc. | Shreveport, LA 71105 | Oil & Gas Operator | Apr 2025 |
| 9281 | Reynolds, E. P., Jr. | Graham, TX 76450 | Oil & Gas Operator | Apr 2025 |
| 9282 | Reynolds, J. C. & W. F. | Wichita Falls, TX 76301 | Oil & Gas Operator | Apr 2025 |
| 9283 | Reynolds, Richard | Seymour, TX 76380 | Oil & Gas Operator | Mar 2008 |
| 9284 | Rfe Operating, LLC | Tyler, TX 75703 | Oil & Gas Operator | Apr 2025 |
| 9285 | RGX Energy LLC | Plano, TX 75025 | Oil & Gas Operator | Oct 2019 |
| 9286 | RHB Exploration & Production,LLC | Grapevine, TX 76099 | Oil & Gas Operator | Apr 2025 |
| 9287 | RHC Energy (USA) LLC | Houston, TX 77027 | Oil Operator | Apr 2025 |
| 9288 | Rheaco Oil Company, LTD. | Sourlake, TX 77659 | Oil Operator | Apr 2025 |
| 9289 | Rheata Resources, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2025 |
| 9290 | Rhodes Disposal, Inc. | Bryson, TX 76427 | Oil Operator | Apr 2025 |
| 9291 | Rhodes Drilling Company | Abilene, TX 79608 | Oil & Gas Operator | Sep 2000 |
| 9292 | Rhombus Operating Co., LTD | Littleton, CO 80160 | Oil & Gas Operator | Feb 2025 |
| 9293 | Rhonda Operating Company | Midland, TX 79710 | Oil & Gas Operator | Aug 2017 |
| 9294 | RHR Oil & Gas, LLC | Fort Worth, TX 76107 | Oil Operator | Apr 2025 |
| 9295 | Rhyne, J.V. | Cisco, TX 76437 | Oil & Gas Operator | Apr 2025 |
| 9296 | Ria Mia Corporation | San Antonio, TX 78230 | Oil & Gas Operator | Apr 2011 |
| 9297 | Rialto Oil & Gas Corporation | Houston, TX 77098 | Oil & Gas Operator | Oct 2012 |
| 9298 | Riata Energy Inc | Oklahoma City, OK 73101 | Oil & Gas Operator | Apr 2008 |
| 9299 | Ric Petroleum, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Aug 2003 |
| 9300 | Rice Drilling Company | Santa Anna, TX 76878 | Oil & Gas Operator | Apr 2025 |