| 301 | Plains Liquids Transport Inc | Houston, TX 77002 | Oil & Gas Operator | May 1996 |
| 302 | Pogue Randall | Ada, OK 74821-1547 | Oil & Gas Operator | Apr 2014 |
| 303 | Pontotoc Operations Inc | Dallas, TX 75225-1425 | Oil & Gas Operator | Jun 2017 |
| 304 | Positive Energy LLC | Ada, OK 74820 | Oil & Gas Operator | Feb 2025 |
| 305 | Pre-MC Inc | Allen, OK 74825 | Oil & Gas Operator | Jan 2025 |
| 306 | Prentice Benny P | Allen, OK 74825-0247 | Oil & Gas Operator | Feb 2007 |
| 307 | Prentice Bradley L | Allen, OK 74825 | Oil & Gas Operator | Jan 2025 |
| 308 | Prentice Bro Oil Operators | Allen, OK 74825 | Oil & Gas Operator | Apr 2014 |
| 309 | Prentice Ed | Allen, OK 74825-6958 | Oil & Gas Operator | Nov 2024 |
| 310 | Primrose Jimmie | | Oil Operator | Feb 1998 |
| 311 | Prosper Oil & Gas,Inc. | Dallas, TX 75201 | Oil & Gas Operator | May 2025 |
| 312 | Pryor, VIctor W., Jr. | Holdenville, OK 74848 | Oil & Gas Operator | Apr 2017 |
| 313 | Qep Energy Company | Midland, TX 79701 | Oil & Gas Operator | Jan 2025 |
| 314 | Quanah Company | Tulsa, OK 74159-0469 | Oil & Gas Operator | May 2020 |
| 315 | Questar Energy Trading | Salt Lake City, UT 84145-0601 | Oil & Gas Operator | Mar 2020 |
| 316 | Questar Explor & Prod Co | Tulsa, OK 74136 | Oil & Gas Operator | Jan 2017 |
| 317 | R & C Oil And Gas Inc | Ada, OK 74820-3150 | Oil Operator | Jul 2016 |
| 318 | R & S Operating | Perry, OK 73077 | Oil & Gas Operator | Jan 2013 |
| 319 | R H S Inc | Ada, OK 74821-1252 | Oil & Gas Operator | Apr 2020 |
| 320 | R J Exploration LLC | Konawa, OK 74849 | Oil & Gas Operator | Feb 2025 |
| 321 | R W Production Company Inc | Ada, OK 74821-2693 | Oil & Gas Operator | Apr 2011 |
| 322 | R.D. Oil Company | Austin, TX 78755 | Oil & Gas Operator | May 2025 |
| 323 | Randy And Jan Walker Oil Company LLC | Konawa, OK 74849-9333 | Oil & Gas Operator | Feb 2025 |
| 324 | Ranken Energy Corporation | Edmond, OK 73013 | Oil & Gas Operator | Jan 2025 |
| 325 | Ratts, Robert V. Inc. | Bedford, TX 76021 | Oil & Gas Operator | Aug 2003 |
| 326 | Red River Oil & Gas Company | Oklahoma City, OK 73132-5120 | Oil & Gas Operator | Mar 2015 |
| 327 | Red Rock Resources, L.L.C. | Wichita Falls, TX 76310 | Oil & Gas Operator | Jan 2025 |
| 328 | Red Sand Resources LLC | Ada, OK 74821 | Oil Operator | Jan 2025 |
| 329 | Redland Resources, LLC | Oklahoma City, OK 73127 | Oil & Gas Operator | Feb 2025 |
| 330 | Regency Petroleum Inc | Jones, OK 73049-8724 | Oil & Gas Operator | Mar 1999 |
| 331 | Research Oil Company Inc | Norman, OK 73070-8776 | Oil & Gas Operator | Aug 2019 |
| 332 | Richardson Lloyd | | Oil & Gas Operator | Oct 2014 |
| 333 | River Valley Oil LLC | Konawa, OK 74849 | Oil Operator | Feb 2025 |
| 334 | Roberson David A | Ada, OK 74821-0008 | Oil & Gas Operator | Jul 2010 |
| 335 | Roberson Oil Company | Houston, TX 77046 | Oil & Gas Operator | Feb 2025 |
| 336 | Roblyn Oil Inc | Allen, OK 74825-6933 | Oil & Gas Operator | Nov 2024 |
| 337 | Rock Creek Energy Co | Ada, OK 74820-5725 | Oil Operator | Jul 2022 |
| 338 | Ronmar Engineering & Expl Inc | Ada, OK 74820-1402 | Oil Operator | Aug 2013 |
| 339 | Rose Operating Company | Tulsa, OK 74101-2391 | Oil & Gas Operator | Dec 2014 |
| 340 | Ross Curtis | Ada, OK 74820-1354 | Oil & Gas Operator | Feb 2012 |
| 341 | Roxanna Oil Company | Oklahoma City, OK 73120-2717 | Oil Operator | Aug 2016 |
| 342 | Royal Drilling Inc | Russell, KS 67665 | Oil Operator | Jan 2025 |
| 343 | Rumley Robert A & Associates | Tulsa, OK 74135-1907 | Oil Operator | Feb 2025 |
| 344 | S & W Transports Inc | Velma, OK 73491 | Oil Operator | Dec 2024 |
| 345 | Salt Creek Energy Company LLC | Shawnee, OK 74802-1505 | Oil & Gas Operator | Jan 2025 |
| 346 | Samson Hydrocarbons Company | Tulsa, OK 74103 | Oil & Gas Operator | Nov 2016 |
| 347 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Jan 2025 |
| 348 | San Francisco-Okla Pet Ex Inc | | Oil & Gas Operator | Apr 2014 |
| 349 | Sandy Petroleum Inc | Shawnee, OK 74801-5634 | Oil & Gas Operator | Nov 2024 |
| 350 | Sanford Casondra | Ada, OK 74820-4460 | Oil & Gas Operator | May 2013 |
| 351 | SBR Oil LLC | Ada, OK 74820 | Oil Operator | Nov 2024 |
| 352 | Sellers Jack B Estate Of | Cleveland, OK 74020 | Oil & Gas Operator | Jan 2025 |
| 353 | Seminole Tank Service | Seminole, OK 74818-1587 | Oil & Gas Operator | Jan 2025 |
| 354 | Shadowpeak Operating LLC | Oklahoma City, OK 73159-6905 | Oil & Gas Operator | Jan 2025 |
| 355 | Sharber Billy Jack Operating | Konawa, OK 74849-0071 | Oil & Gas Operator | Mar 2015 |
| 356 | Sheridan Production Company, LLC | Houston, TX 77056 | Oil & Gas Operator | Jan 2025 |
| 357 | Silver Creek Oil & Gas, LLC | Flower Mound, TX 75022 | Oil & Gas Operator | May 2025 |
| 358 | Silver Eagle Oil Company | Ada, OK 74820 | Oil Operator | Dec 2004 |
| 359 | Six "E" Trading Company | Henryetta, OK 74801 | Oil & Gas Operator | Sep 2020 |
| 360 | Slim Hole Inc | Farmington, NM 87401-7725 | Oil & Gas Operator | May 2013 |
| 361 | Smith Brothers Enterprises | Ardmore, OK 73402 | Oil Operator | Jul 1998 |
| 362 | Smith Max Dean | Wewoka, OK 74884 | Oil & Gas Operator | Dec 2024 |
| 363 | Sonata Oil & Gas Corp Inc | Stratford, OK 74812 | Oil & Gas Operator | Apr 2014 |
| 364 | South Ranch Corporation | Midland, TX 79707 | Oil Operator | Sep 2019 |
| 365 | Southerland Marquieta Dba Keta Oil Company | Loco, OK 73442-1815 | Oil & Gas Operator | Feb 2025 |
| 366 | Southwest Petroleum Corp | Drumright, OK 74030 | Oil & Gas Operator | Mar 2018 |
| 367 | Spearpoint Energy LLC | Seminole, OK 74818-1247 | Oil Operator | Jun 2015 |
| 368 | Speed James F | Ada, OK 74821-1221 | Oil & Gas Operator | Nov 2009 |
| 369 | Standard Energy Inc | | Oil Operator | Feb 1997 |
| 370 | Stephens & Johnson Operating Co. | Wichita Falls, TX 76307 | Oil & Gas Operator | May 2025 |
| 371 | Stephens Operating Inc | Ardmore, OK 73401 | Oil & Gas Operator | Sep 2014 |
| 372 | Stephenson W W Pet Corp | Edmond, OK 73003-0014 | Oil & Gas Operator | Jul 2017 |
| 373 | Stoneridge Oil Inc | Ponca City, OK 74601-1600 | Oil & Gas Operator | Jan 2001 |
| 374 | Sun Refining & Marketing | Philadelphia, PA 19103 | Oil & Gas Operator | Jul 2015 |
| 375 | Sunoco Partners MKT & Terminal | Tulsa, OK 74102-2039 | Oil & Gas Operator | Jan 2019 |
| 376 | Sutton Energy LLC | Ada, OK 74820-8550 | Oil & Gas Operator | Jan 2025 |
| 377 | Sutton Oil Company, LLC | Loco, OK 73442 | Oil Operator | Jan 2025 |
| 378 | Swadley Roy W & Judith I | Holdenville, OK 74848-0794 | Oil & Gas Operator | Mar 2015 |
| 379 | Swenton, Michael J. | Tulsa, OK 74105 | Oil & Gas Operator | Jan 2025 |
| 380 | T & J Operating | Ada, OK 74821-1547 | Oil Operator | Feb 2012 |
| 381 | T & K Oil Inc | Stephens, AR 71764 | Oil Operator | Aug 2024 |
| 382 | Talbert, Eugene Operating Co,Inc | Tyler, TX 75702 | Oil & Gas Operator | Dec 1997 |
| 383 | Tandem Oil Inc | Oklahoma City, OK 73139 | Oil & Gas Operator | Oct 1998 |
| 384 | Tapoil Inc | Elmore City, OK 73433-9077 | Oil & Gas Operator | Jul 2021 |
| 385 | Ten Grand Energy Company Inc | Nachogdoches, TX 75963-1880 | Oil Operator | Mar 2011 |
| 386 | Terry Jack | Konawa, OK 74849-0337 | Oil Operator | Feb 2012 |
| 387 | Tex-Star Production | Dallas, TX 75206 | Oil & Gas Operator | Feb 2025 |
| 388 | Texakoma Oil & Gas Corp | Dallas, TX 75240 | Oil & Gas Operator | Sep 2014 |
| 389 | Texakoma Operating, L.P. | Plano, TX 75024 | Oil & Gas Operator | Jan 2025 |
| 390 | Texas United Petroleum Inc | Dallas, TX 75243 | Oil & Gas Operator | Jun 2003 |
| 391 | The Guinn Company LLC | Asher, OK 74826-6012 | Oil & Gas Operator | Oct 2024 |
| 392 | The KT Oil Company LLC | Ada, OK 74820 | Oil Operator | Jan 2025 |
| 393 | The Twenty Eleven Corp Inc | Ada, OK 74820-3605 | Oil Operator | Jan 2025 |
| 394 | The William R Earnhardt Company | Bristow, OK 74010 | Oil & Gas Operator | Jan 2025 |
| 395 | Tide West Oil Company | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2021 |
| 396 | Tidwell Oil LLC | Roff, OK 74865 | Oil Operator | Feb 2022 |
| 397 | Tiger Oil Company | Dallas, TX 75221 | Oil & Gas Operator | May 2007 |
| 398 | Tiger Trucks Inc | Seminole, OK 74868 | Oil & Gas Operator | Feb 2025 |
| 399 | TKL Oil Properties Inc | Konawa, OK 74849 | Oil & Gas Operator | Dec 2024 |
| 400 | Toklan Oil And Gas Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Feb 2025 |