| 201 | Radiant Oil & Gas Operating Company, Inc | | Oil & Gas Operator | Aug 2015 |
| 202 | Radius Energy Services, LLC | Montevallo, AL 35115 | Oil & Gas Operator | Dec 2021 |
| 203 | Radius Operating, LLC | Round Rock, TX 78664 | Oil & Gas Operator | Jul 2025 |
| 204 | Radke Oil Co., Inc. | | Oil Operator | May 2001 |
| 205 | Radley Children Trust | El Campo, TX 77437 | Gas Operator | Jul 2007 |
| 206 | Radley Electric, Inc. | Sourlake, TX 77659 | Oil & Gas Operator | Oct 2001 |
| 207 | Radley Equipment | Sourlake, TX 77659 | Oil & Gas Operator | May 2000 |
| 208 | Radley, R. R. | Sourlake, TX 77659 | Oil & Gas Operator | Mar 2008 |
| 209 | Radley, Terry R., Operator | Sourlake, TX 77659 | Oil & Gas Operator | Apr 2006 |
| 210 | Radtke, D.E. & Associates, Inc. | Midland, TX 79710 | Oil & Gas Operator | May 2004 |
| 211 | Radzewicz & Assoc-R.C.Bertolet | | Oil Operator | Oct 1985 |
| 212 | Radzewicz Expl. & DRLG. Corp. | | Oil & Gas Operator | Mar 2011 |
| 213 | Radzewicz Operating Corp. | | Oil & Gas Operator | Oct 2017 |
| 214 | Rael Resources LLC | Cowley, WY 82420 | Oil Operator | May 2025 |
| 215 | Raelee Oil LLC | Plainville, KS 67663 | Oil Operator | Jul 2021 |
| 216 | Raf Oil Company | Oklahoma City, OK 73120-1944 | Oil & Gas Operator | Jul 2013 |
| 217 | Rafter H Operating LLC | El Reno, OK 73036 | Oil & Gas Operator | Apr 2025 |
| 218 | Rafter L Resources, LLC | Bulverde, TX 78163 | Oil Operator | Jul 2025 |
| 219 | Rafter T Resources LLC | Midland, TX 79705 | Oil & Gas Operator | Jul 2025 |
| 220 | Ragars Oil & Gas Co. | Austin, TX 78716 | Oil & Gas Operator | Jul 2025 |
| 221 | Ragnar Exploration, LLC | | Oil & Gas Operator | May 2025 |
| 222 | Ragsco LLC | Charleston, WV 25314 | Oil & Gas Operator | Dec 2021 |
| 223 | Rahm Oil Company | Enid, OK 73703 | Oil & Gas Operator | Mar 2011 |
| 224 | Rahmco Oil And Gas Co Inc | Ponca City, OK 74604-5155 | Oil & Gas Operator | Jan 2013 |
| 225 | Raida, Junior V. | Neodesha, KS 66757 | Oil Operator | Jul 2013 |
| 226 | Raider Oil & Gas Company | MC Camey, TX 79752 | Oil & Gas Operator | Jul 2025 |
| 227 | Railroad Commission Of Texas | Austin, TX 78701 | Oil Operator | Dec 2004 |
| 228 | Rainbo Service Company | Oklahoma City, OK 73129 | Oil & Gas Operator | Apr 2025 |
| 229 | Rainbow End Ranch | Okemah, OK 74859-9733 | Oil & Gas Operator | Apr 2020 |
| 230 | Rainbow Energy Corporation | Midland, TX 79701 | Oil & Gas Operator | Nov 2002 |
| 231 | Rainbow Energy Inc | | Oil & Gas Operator | Jul 2024 |
| 232 | Rainbow Oil & Gas | Pawhuska, OK 74056-0056 | Oil Operator | Oct 2010 |
| 233 | Rainbow Oil & Gas LLC | Coolville, OH 45723 | Oil & Gas Operator | Dec 2024 |
| 234 | Rainbow Oil And Gas Inc | | Oil & Gas Operator | Jun 2016 |
| 235 | Rainbow Oil Company | | Oil & Gas Operator | Aug 1999 |
| 236 | Rainbow Oilwell Service Inc | Depew, OK 74028 | Oil & Gas Operator | Jul 2024 |
| 237 | Rainbow Producing Company | Dallas, TX 75204 | Oil & Gas Operator | Aug 2003 |
| 238 | Rainbow Resources, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Aug 2007 |
| 239 | Rainbow Seven Oil & Gas, Inc. | Ranger, TX 76470 | Oil & Gas Operator | Jul 2025 |
| 240 | Rainer Energy, Inc. | Weatherford, TX 76086 | Oil & Gas Operator | Jul 2025 |
| 241 | Rainey, Wayne | Sweetwater, TX 79556 | Oil & Gas Operator | Feb 2019 |
| 242 | Rainmaker Oil & Gas Corp | Oklahoma City, OK 73112-8883 | Oil & Gas Operator | Apr 2015 |
| 243 | Rains & Williams | | Oil & Gas Operator | Nov 1995 |
| 244 | Rains And Williamson Oil Co. | Wichita, KS 67277 | Oil & Gas Operator | Mar 2025 |
| 245 | Rainwater A L | Okmulgee, OK 74447 | Oil & Gas Operator | Jan 2013 |
| 246 | Rainwater, John | Graham, TX 76450 | Oil & Gas Operator | Jul 2025 |
| 247 | Raisa II Operating LLC | | Oil & Gas Operator | Mar 2017 |
| 248 | Raizen Oil Company | Velma, OK 73091 | Oil & Gas Operator | Feb 2016 |
| 249 | Raizen Oil LLC | Duncan, OK 73533-4657 | Oil & Gas Operator | Nov 2003 |
| 250 | Rajoil Inc. | Vernon, TX 76384 | Oil & Gas Operator | Aug 2003 |
| 251 | Raker Resources LLC | Houston, TX 77042 | Oil & Gas Operator | Jul 2025 |
| 252 | Rakestraw Bros., L.L.C | El Dorado, KS 67042 | Oil & Gas Operator | Dec 2019 |
| 253 | Rako Operating Company | Fayetteville, AR 72701 | Oil & Gas Operator | Apr 2025 |
| 254 | Ralph C Bruton | Hobbs, NM 88240 | Oil & Gas Operator | Dec 2007 |
| 255 | Ralph Dawson | | Oil Operator | Nov 2005 |
| 256 | Ralph E Shorts Drilling | Polk, OH 44866 | Oil & Gas Operator | Dec 2024 |
| 257 | Ralph E Williamson | San Antonio, TX 78239 | Oil & Gas Operator | Dec 2013 |
| 258 | Ralph L Albright Drilling | Reno, NV 89511-7627 | Oil & Gas Operator | Dec 1991 |
| 259 | Ralph L. Leaderbrand | | Oil & Gas Operator | Dec 1996 |
| 260 | Ralph, C D | Owensboro, KY 42301 | Oil Operator | Dec 2004 |
| 261 | Ralph, Terry D | Utica, KY 42376 | Oil Operator | Dec 2023 |
| 262 | Ralyn Corp. | Pleasanton, TX 78064 | Oil & Gas Operator | Jul 2025 |
| 263 | Ram Asset Management Co | Oklahoma City, OK 73114 | Oil & Gas Operator | Mar 2015 |
| 264 | Ram Energy LLC | Tulsa, OK 74152 | Oil & Gas Operator | Apr 2025 |
| 265 | Ram Energy LLC (Ok) | | Oil & Gas Operator | Feb 2018 |
| 266 | Ram Management Company, Inc. | | Oil & Gas Operator | Sep 1984 |
| 267 | Ram Oil & Gas | Blackwell, OK 74631 | Oil & Gas Operator | May 2013 |
| 268 | Ram Oil And Gas, Inc. | Walsh, CO 81090 | Oil & Gas Operator | Jul 2025 |
| 269 | Ram Operating Company, Inc. | Houston, TX 77002 | Oil & Gas Operator | Sep 2012 |
| 270 | Ram Operating Inc. | Browns, IL 62818 | Oil & Gas Operator | Aug 2008 |
| 271 | Ram Petroleum Co | | Oil & Gas Operator | Sep 1983 |
| 272 | Ram Petroleum Corporation | Wichita, KS 67202 | Gas Operator | Mar 2025 |
| 273 | Ram Petroleum, LLC | Tylertown, MS 39667 | Oil & Gas Operator | May 2025 |
| 274 | Ram Service - Mi | | Oil Operator | Sep 1994 |
| 275 | Rama Operating C | | Oil & Gas Operator | Dec 1996 |
| 276 | Rama Operating Co., Inc. | Stafford, KS 67578 | Oil & Gas Operator | Apr 2025 |
| 277 | Ramah Oil Company LLC | MT Gilead, OH 43338 | Oil & Gas Operator | Dec 2007 |
| 278 | Rambler Oil Co | Oklahoma City, OK 73154 | Oil & Gas Operator | Jan 1999 |
| 279 | Ramco Drilling S | | Oil & Gas Operator | Dec 1992 |
| 280 | Ramco Energy Corporation | FT. Lauderdale, FL 33312 | Oil & Gas Operator | Dec 2008 |
| 281 | Ramco Exploration, Inc. | | Oil & Gas Operator | Feb 1998 |
| 282 | Ramco Oil & Gas Inc | Midland, TX 79701 | Oil & Gas Operator | Nov 2006 |
| 283 | Ramco Oil Company | Pawhuska, OK 74056 | Oil & Gas Operator | Feb 2012 |
| 284 | Ramco Operating Company | Tulsa, OK 74135 | Oil & Gas Operator | Jan 1998 |
| 285 | Ramco, Inc. | | Oil & Gas Operator | May 1992 |
| 286 | Ramey L E SR | Mounds, OK 74047 | Oil Operator | Jan 2000 |
| 287 | Ramey Oil Corporation | Kiefer, OK 74041-0699 | Oil & Gas Operator | May 2025 |
| 288 | Ramey Sharp N Glenn SD Unit | Tulsa, OK 74120 | Oil Operator | Nov 1998 |
| 289 | Ramey Wayne | Mounds, OK 74047 | Oil & Gas Operator | Mar 2025 |
| 290 | Ramhead Petroleum Inc | Seminole, OK 74818-0848 | Oil & Gas Operator | Aug 2008 |
| 291 | Ramhorn Energy, LLC | Green River, WY 82935 | Oil & Gas Operator | May 2025 |
| 292 | Ramoil Company | Winfield, KS 67156 | Oil & Gas Operator | May 1987 |
| 293 | Rampage Energy Inc | Bristow, OK 74010-6415 | Oil & Gas Operator | Apr 2020 |
| 294 | Rampage Exploration, Inc. | Austin, TX 78737 | Oil & Gas Operator | Jul 2025 |
| 295 | Rampart Energy Company | | Oil & Gas Operator | Dec 2024 |
| 296 | Rampart Petroleum, Incorporated | Buffalo Gap, TX 79508 | Oil & Gas Operator | Jan 2009 |
| 297 | Rampike Resources LTD | Denver, CO 80202 | Oil Operator | May 2025 |
| 298 | Ramrod Oil And Gas (U.S.A.) Inc. | Corpus Chrsti, TX 78403 | Oil & Gas Operator | Jul 2025 |
| 299 | Ramrod Oil Co., A General Partnership | Iola, KS 66749 | Oil Operator | Nov 2001 |
| 300 | Ramrod Prod. Co., Inc. | | Oil Operator | Feb 2024 |