| 301 | Ross Explorations, Inc | Fort Smith, AR 72903 | Gas Operator | Jun 2024 |
| 302 | Rush-Andrus Engineering | Royse City, TX 75189 | Oil & Gas Operator | Feb 2022 |
| 303 | Rusk County Well Service, Inc | Kilgore, TX 75662 | Gas Operator | May 2024 |
| 304 | S & S Production, LLC | Parkersburg, OH 26101 | Oil & Gas Operator | Aug 2021 |
| 305 | S S & T Oil, LLC | Smackover, AR 71762 | Oil Operator | Jun 2024 |
| 306 | Sabre Operating, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Nov 2024 |
| 307 | Sagely Floyd E Properties LTD | Fort Smith, AR 72917-0308 | Gas Operator | Jan 2015 |
| 308 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Aug 2024 |
| 309 | Sandridge Exploration And Production LLC | Oklahoma City, OK 73104 | Oil & Gas Operator | Nov 2024 |
| 310 | Saulsbury, Beverly | El Dorado, AR 71730 | Oil Operator | Jul 2024 |
| 311 | Saulsbury, John G | | Oil Operator | Apr 2023 |
| 312 | Saye Oil Company | | Oil Operator | Jul 2012 |
| 313 | Schmid Properties Inc | Hico, TX 76457 | Oil & Gas Operator | Nov 2024 |
| 314 | Seagull Operating Co., Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Jul 2024 |
| 315 | Sedna Energy, Inc | | Gas Operator | Nov 2011 |
| 316 | Seeco | | Gas Operator | Jul 2016 |
| 317 | Seeco, Inc. | | Gas Operator | Sep 2015 |
| 318 | Seeco, LLC | | Gas Operator | May 2019 |
| 319 | Sewell Operating, Inc | | Oil Operator | Dec 2008 |
| 320 | Sewell Production, LLC | El Dorado, AR 71730 | Oil Operator | Jul 2024 |
| 321 | Sexton Oil Company | Camden, AR 71701 | Oil Operator | Apr 2024 |
| 322 | Shamrock Well Operations LLC | Oklahoma City, OK 73118-4015 | Oil & Gas Operator | Sep 2024 |
| 323 | Shana Petroleum Company | Dallas, TX 75206 | Oil & Gas Operator | Sep 2002 |
| 324 | Shelton, Marty, Inc | Smackover, AR 71762 | Oil Operator | Apr 2024 |
| 325 | Shidler, Mark L., Inc. | Houston, TX 77055 | Oil & Gas Operator | Nov 2024 |
| 326 | Shields Operating Inc | Fort Smith, AR 72901-3834 | Oil & Gas Operator | Oct 2021 |
| 327 | Shuler Drilling Co., Inc. | El Dorado, AR 71730 | Oil & Gas Operator | Jul 2024 |
| 328 | Sinclair And Sinclair, LLC | El Dorado, AR 71730 | Oil & Gas Operator | Jun 2024 |
| 329 | Sinclair Operating Company, LLC | El Dorado, AR 71730 | Oil & Gas Operator | Mar 2024 |
| 330 | Sinclair, J D Production | | Oil Operator | May 2014 |
| 331 | Sklar Exploration Company LLC | Shreveport, LA 71101 | Oil & Gas Operator | Nov 2024 |
| 332 | Smackover Drilling Company Inc | Shreveport, LA 71104 | Oil & Gas Operator | Jul 2024 |
| 333 | Smackover Producing Co | | Oil & Gas Operator | Jun 2024 |
| 334 | Smi Operating Company, LLC | Strong, AR 71765 | Oil & Gas Operator | Jul 2024 |
| 335 | Smith Oil Company | Smackover, AR 71762 | Oil Operator | Jun 2024 |
| 336 | Smith Operating & Management Co. | Shreveport, LA 71161 | Oil & Gas Operator | Dec 2022 |
| 337 | Smith, Jerry Production | Magnolia, AR 71753 | Oil Operator | Jul 2024 |
| 338 | Smith, Roger G | Magnolia, AR 71753 | Oil Operator | Jul 2024 |
| 339 | Southern Energy Of La, LLC | Shreveport, LA 71106 | Oil Operator | Jul 2024 |
| 340 | Southern Oil LLC | Smackover, AR 71762 | Oil & Gas Operator | May 2022 |
| 341 | Southwestern Energy Prod Co | Houston, TX 77032 | Oil & Gas Operator | Jun 2015 |
| 342 | Spindletop Oil & Gas Co. | Dallas, TX 75230 | Oil & Gas Operator | Nov 2024 |
| 343 | St. Mary Land & Exploration Co | Denver, CO 80201 | Oil & Gas Operator | Jun 2010 |
| 344 | Stephens Oil Company, LLC | Stephens, AR 71764 | Oil Operator | Jun 2024 |
| 345 | Stephens Production Company | The Woodlands, TX 77381 | Oil & Gas Operator | Sep 2024 |
| 346 | Stone Oak Operating, LLC | Oklahoma City, OK 73120 | Oil & Gas Operator | Sep 2024 |
| 347 | Storm Cat Energy (USA) Operating Corporation | Denver, CO 80202 | Gas Operator | Jun 2017 |
| 348 | Storm Cat Energy USA Corporation | Denver, CO 80202 | Gas Operator | Nov 2011 |
| 349 | Story Oil And Gas Inc | Magnolia, AR 71753 | Oil & Gas Operator | Jul 2024 |
| 350 | Strand Energy, L.C. | Houston, TX 77002 | Oil & Gas Operator | Nov 2024 |
| 351 | Stroud Petroleum, Inc. | Shreveport, LA 71162 | Oil & Gas Operator | Nov 2024 |
| 352 | Stroud Production LLC | Shreveport, LA 71101 | Oil & Gas Operator | Jul 2024 |
| 353 | STS Petroleum LLC | Houston, TX 77289 | Oil & Gas Operator | Nov 2024 |
| 354 | Sunland Production Company, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Aug 2024 |
| 355 | T & K Oil Inc | Stephens, AR 71764 | Oil Operator | Jul 2024 |
| 356 | T2 Operating Corporation | Denver, CO 80202 | Oil & Gas Operator | Nov 2024 |
| 357 | Tensas Delta Exploration Company, LLC | Shreveport, LA 71101-5323 | Oil & Gas Operator | Jul 2021 |
| 358 | Tepee Petroleum Company, Inc. | Houston, TX 77098 | Oil & Gas Operator | Feb 2014 |
| 359 | Tetra Energy LLC | Fort Smith, AR 72917-0476 | Gas Operator | Oct 2019 |
| 360 | Texland Petroleum Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2007 |
| 361 | The Blackbird Company | Shreveport, LA 71106 | Oil & Gas Operator | Jul 2024 |
| 362 | The Bonds Company | | Oil Operator | Dec 2014 |
| 363 | The Houston Exploration Company | Houston, TX 77002 | Oil & Gas Operator | Apr 2017 |
| 364 | The Ohio Oil Company | | Oil Operator | Jul 2024 |
| 365 | Thomas, Mark C Operating | | Oil Operator | Aug 2009 |
| 366 | Titan Energy, LLC | Smackover, AR 71762 | Oil & Gas Operator | Sep 2024 |
| 367 | TK Drilling Corp. | Tulsa, OK 74133 | Oil & Gas Operator | Aug 2024 |
| 368 | TMR Exploration, Inc. | Bossier City, LA 71171 | Oil & Gas Operator | Nov 2024 |
| 369 | Traylor Equipment, LLC | Smackover, AR 71762 | Oil Operator | Aug 2007 |
| 370 | Trimble, Don G Dba Trimble Production Company | Houston, TX 77066 | Oil Operator | Jul 2024 |
| 371 | Trio Production Company, LLC | Stephens, AR 71764 | Oil Operator | Jul 2024 |
| 372 | Triple C Production LLC | Bloomburg, TX 75556 | Oil & Gas Operator | Apr 2024 |
| 373 | Turner, Jack L | El Dorado, AR 71730 | Oil Operator | Nov 2023 |
| 374 | Unit Petroleum Company | Tulsa, OK 74170 | Oil & Gas Operator | Nov 2024 |
| 375 | Urban Oil & Gas Group, LLC | Plano, TX 75074 | Oil & Gas Operator | Nov 2024 |
| 376 | Van Buren Energy Production, LLC | Oklahoma City, OK 73102 | Gas Operator | Jun 2024 |
| 377 | Van Oil, Inc | Madison, KS 66860 | Oil & Gas Operator | Jul 2024 |
| 378 | Vanguard Operating, LLC | Houston, TX 77057 | Oil & Gas Operator | Feb 2021 |
| 379 | Vastar Resources Inc | Houston, TX 77253 | Oil & Gas Operator | Jul 2024 |
| 380 | Vaughn Petroleum, Inc. | Dallas, TX 75219 | Oil & Gas Operator | May 2004 |
| 381 | Vision Natural Resources, LP | Midland, TX 79708 | Oil & Gas Operator | Nov 2024 |
| 382 | W M Operating, Inc | Stephens, AR 71764 | Oil Operator | Jul 2021 |
| 383 | Wabco Production Company | | Oil Operator | Jul 2021 |
| 384 | Waelder Oil & Gas, Inc. | Fort Smith, AR 72903 | Oil & Gas Operator | Aug 2024 |
| 385 | Washburn Lee | Newcastle, WY 82701 | Oil Operator | Sep 2024 |
| 386 | Webb Brothers Oil Company | | Oil Operator | Jul 2013 |
| 387 | Webb Brothers Well Service, Inc. | El Dorado, AR 71730 | Oil & Gas Operator | Jul 2024 |
| 388 | Weiser-Brown Oil Co | Magnolia, AR 71754 | Oil Operator | Jul 2024 |
| 389 | Weiser-Brown Operating Company | Magnolia, AR 71754 | Oil & Gas Operator | Nov 2024 |
| 390 | White Rock Oil & Gas, LLC | Plano, TX 75024 | Oil & Gas Operator | Nov 2024 |
| 391 | White, Chad Operating Company, Inc | | Oil & Gas Operator | Apr 2011 |
| 392 | Whiting Oil And Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Nov 2024 |
| 393 | Whiting Petroleum Corporation | Denver, CO 80290 | Oil & Gas Operator | Jul 2024 |
| 394 | Will-Drill Operating, L.L.C. | Shreveport, LA 71105 | Oil & Gas Operator | Nov 2024 |
| 395 | Williamson Pumping Service, Inc | Stamps, AR 71860 | Oil & Gas Operator | Apr 2024 |
| 396 | Williamson, Richard | Camden, AR 71701 | Oil & Gas Operator | Jul 2024 |
| 397 | Williford Petroleum LLC | Green CV SPGS, FL 32043 | Oil & Gas Operator | Nov 2024 |
| 398 | Witt Oil Production, Inc | | Oil & Gas Operator | Jul 2024 |
| 399 | Wolf Exploration, Inc. | | Gas Operator | Oct 2012 |
| 400 | Wright, Bobby G | | Oil Operator | Oct 2007 |