| 301 | Plains Production Inc | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 1995 |
| 302 | Plains Resources Group LLC | Wynnewood, OK 73098 | Gas Operator | Dec 2024 |
| 303 | Plains Resources Inc. | Houston, TX 77002 | Oil & Gas Operator | Jul 2008 |
| 304 | Plainsmen Energy LLC | Enid, OK 73703-5747 | Oil & Gas Operator | Jan 2025 |
| 305 | Plano Petroleum LLC | Plano, TX 75093-8773 | Oil & Gas Operator | Apr 2013 |
| 306 | Plenergy Dev LTD | | Oil & Gas Operator | Jun 2004 |
| 307 | Pletcher Oil Limited Liability Company | Ardmore, OK 73401 | Oil & Gas Operator | Jan 2025 |
| 308 | Plo Inc | Amarillo, TX 79109-6222 | Gas Operator | Mar 2015 |
| 309 | Plotner Oil Company | Oklahoma City, OK 73122 | Oil & Gas Operator | Jan 2025 |
| 310 | Plotner Ralph Oil & Gas Inv Co | Oklahoma City, OK 73112 | Oil & Gas Operator | Nov 2021 |
| 311 | Plumb Resources, Inc. | Houston, TX 77096 | Oil & Gas Operator | Jun 1998 |
| 312 | Plummer Energy Inc | Pauls Valley, OK 73075-8663 | Oil & Gas Operator | Nov 2016 |
| 313 | Plummer Robert Layna Trust | Ralston, OK 74650 | Oil Operator | Jul 2018 |
| 314 | Plymouth Exploration LLC | Tulsa, OK 74119-1031 | Oil & Gas Operator | Dec 2024 |
| 315 | PM Oil & Gas, Inc. | San Angelo, TX 76903 | Oil Operator | Mar 2025 |
| 316 | PMD Oil Recovery LLC | Oklahoma City, OK 73129-5241 | Oil & Gas Operator | Jan 2025 |
| 317 | Poblano Energy LLC | Houston, TX 77024-2217 | Oil & Gas Operator | Dec 2024 |
| 318 | Pogo Panhandle 2004, L.P. | Houston, TX 77002 | Oil & Gas Operator | Oct 2017 |
| 319 | Pogo Producing Company LLC | Houston, TX 77002 | Oil & Gas Operator | Jan 2025 |
| 320 | Pogue Randall | Ada, OK 74821-1547 | Oil & Gas Operator | Apr 2014 |
| 321 | Polaris Energy Dev Co | Tulsa, OK 74135 | Oil & Gas Operator | Apr 2000 |
| 322 | Polaris Petroleum Operations LLC | Branson West, MO 65737 | Oil & Gas Operator | May 2019 |
| 323 | Pole Cat Oil Company | Sapulpa, OK 74067 | Oil Operator | Dec 2024 |
| 324 | Pollard Jr G W | Okmulgee, OK 74447 | Oil & Gas Operator | Apr 2015 |
| 325 | Pollok Energy LLC | Tulsa, OK 74159 | Oil & Gas Operator | Jan 2025 |
| 326 | Polo Operating Inc | Oklahoma City, OK 73112 | Oil & Gas Operator | May 2006 |
| 327 | Ponder Oil Producers LLC | Kellyville, OK 74039 | Oil & Gas Operator | Nov 2024 |
| 328 | Pontotoc Operations Inc | Dallas, TX 75225-1425 | Oil & Gas Operator | Jun 2017 |
| 329 | Pool, Lloyd Operating | Sandia Park, NM 87047 | Gas Operator | Dec 2013 |
| 330 | Poorboy Oil Inc | Velma, OK 73491 | Oil & Gas Operator | Jul 2022 |
| 331 | Pope Charles Edward | Morris, OK 74445 | Oil & Gas Operator | Mar 2023 |
| 332 | Pope Oil LLC | Morris, OK 74445 | Oil Operator | Dec 2024 |
| 333 | Pope Ted & Karen Dba MP Operating | Bristow, OK 74010 | Oil Operator | Jan 2025 |
| 334 | Portal Energy Corporation | Dallas, TX 75201 | Oil & Gas Operator | Mar 1993 |
| 335 | Porter John B | Ketchum, OK 74349-0207 | Oil & Gas Operator | May 2000 |
| 336 | Porter John E "Gene" | Cushing, OK 74023 | Oil & Gas Operator | Aug 2000 |
| 337 | Porter Oil And Gas Inc | Fort Smith, AR 72903-6906 | Oil & Gas Operator | Dec 2024 |
| 338 | Porter Tom & John | Boynton, OK 74422 | Oil & Gas Operator | Dec 2024 |
| 339 | Portfolio Oil Corporation | Oklahoma City, OK 73119 | Oil & Gas Operator | May 2013 |
| 340 | Positive Energy LLC | Ada, OK 74820 | Oil & Gas Operator | Jan 2025 |
| 341 | Post Oak Oil Company | Oklahoma City, OK 73112 | Oil & Gas Operator | Jul 2013 |
| 342 | Post Oak Petroleum LLC | Skiatook, OK 74670 | Oil Operator | Dec 2024 |
| 343 | Post Petroleum Company | Oklahoma City, OK 73116 | Oil & Gas Operator | Aug 2013 |
| 344 | Postrock Midcontinent Production LLC | Oklahoma City, OK 73101 | Oil & Gas Operator | Nov 2024 |
| 345 | Poteet & Harris | Holdenville, OK 74848 | Oil Operator | Sep 2012 |
| 346 | Potter Hammill & Potter Inc. | Beggs, OK 74421-0038 | Oil Operator | Aug 2013 |
| 347 | Potter J And D Oil LLC | Kingfisher, OK 73750-3832 | Oil & Gas Operator | Mar 2015 |
| 348 | Potter Tom Estate | | Oil Operator | Dec 2014 |
| 349 | Potts Exploration LLC | Oklahoma City, OK 73114 | Gas Operator | Jan 2016 |
| 350 | Pound Robert M | Bristow, OK 74010 | Oil & Gas Operator | Sep 2014 |
| 351 | Powell James S | Cleveland, OK 74020 | Oil Operator | Dec 2024 |
| 352 | Powell Jess L | Sapulpa, OK 74066 | Oil & Gas Operator | Dec 2024 |
| 353 | Powell Oil | Healdton, OK 73438-4463 | Oil & Gas Operator | Jan 2025 |
| 354 | Power Fuel Producers Inc | Keller, TX 76244-1059 | Oil & Gas Operator | Sep 2001 |
| 355 | Powerline Energy Corporation | Arlington, TX 76015 | Oil & Gas Operator | Mar 2025 |
| 356 | Powers Energy Inc | Denver, CO 80237-1926 | Oil & Gas Operator | Aug 1999 |
| 357 | PPP Petroleum LP | Dallas, TX 75201-1585 | Oil & Gas Operator | Dec 2024 |
| 358 | Prairie Exploration Company | Norman, OK 73072 | Oil & Gas Operator | Mar 2011 |
| 359 | Prairie Wind Oil LLC | Blackwell, OK 74647-7242 | Oil & Gas Operator | Oct 2024 |
| 360 | Prairiedale Energy Inc | Duncan, OK 73533-3657 | Oil & Gas Operator | Dec 2024 |
| 361 | PRDJ Cockrum Enterprises Inc | Okemah, OK 74859-5126 | Oil & Gas Operator | Mar 2022 |
| 362 | Pre-MC Inc | Allen, OK 74825 | Oil & Gas Operator | Dec 2024 |
| 363 | Precision Operating Inc. | Richardson, TX 75080 | Oil & Gas Operator | Jul 2014 |
| 364 | Pregler Oil Company LLC | Tulsa, OK 74119 | Oil & Gas Operator | Dec 2024 |
| 365 | Premier Gas Company LLC | Durant, OK 74701-3428 | Oil Operator | Sep 2024 |
| 366 | Premier Oil & Gas LLC | Blanchard, OK 73010-2010 | Oil Operator | Dec 2022 |
| 367 | Premier Resources LTD | Denver, CO 80237 | Oil & Gas Operator | Jul 2002 |
| 368 | Prenalta Corporation | Terrytown, NY 10591 | Oil & Gas Operator | Jan 1997 |
| 369 | Prentice Benny P | Allen, OK 74825-0247 | Oil & Gas Operator | Feb 2007 |
| 370 | Prentice Bradley L | Allen, OK 74825 | Oil & Gas Operator | Dec 2024 |
| 371 | Prentice Bro Oil Operators | Allen, OK 74825 | Oil & Gas Operator | Apr 2014 |
| 372 | Prentice Ed | Allen, OK 74825-6958 | Oil & Gas Operator | Nov 2024 |
| 373 | Prentice Napier & Green Inc | Oklahoma City, OK 73142 | Oil & Gas Operator | Jan 2025 |
| 374 | Presco Inc | The Woodlands, TX 77380 | Oil & Gas Operator | Oct 2020 |
| 375 | Presidio Energy, Inc. | | Oil & Gas Operator | Jan 1992 |
| 376 | Presidio Petroleum LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2025 |
| 377 | Presley Operating LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Dec 2024 |
| 378 | Presley Petroleum Company | Newport Beach, CA 92658-2200 | Oil & Gas Operator | Oct 1999 |
| 379 | Pressure Pumping Services LLC | Blackwell, OK 74631-2466 | Oil & Gas Operator | Dec 2024 |
| 380 | Preston Carter Oil Company | Davis, OK 73030 | Oil & Gas Operator | Dec 2024 |
| 381 | Preston Oil Co | Woodlands, TX 77380 | Oil & Gas Operator | Dec 2009 |
| 382 | Pri Producing Inc | Houston, TX 77002 | Oil & Gas Operator | Jan 2006 |
| 383 | Priam Operating Company | Tulsa, OK 74114 | Oil & Gas Operator | Jul 2022 |
| 384 | Price Brothers Oil Co | Duncan, OK 73533 | Oil Operator | Feb 1996 |
| 385 | Price J R Inc | Addington, OK 73520-0099 | Oil & Gas Operator | Apr 2015 |
| 386 | Price Operating Company Inc | Nowata, OK 74048 | Oil & Gas Operator | Mar 2020 |
| 387 | Price, W. H. | Granbury, TX 76048 | Oil & Gas Operator | Jun 2024 |
| 388 | Pricor-TRC Corporation | Mounds, OK 74047 | Oil & Gas Operator | May 2013 |
| 389 | Pride Energy Company | Tulsa, OK 74170 | Oil & Gas Operator | Mar 2025 |
| 390 | Primary Fuels Inc | Midland, TX 79701-4410 | Oil & Gas Operator | Mar 1991 |
| 391 | Primary Natural Resources III LLC | Tulsa, OK 74136-6351 | Oil & Gas Operator | Jan 2025 |
| 392 | Primary Natural Resources Inc. | Tulsa, OK 74136-6351 | Oil & Gas Operator | Mar 2023 |
| 393 | Primary Natural Resources IV LLC | Tulsa, OK 74136-6351 | Oil & Gas Operator | Sep 2017 |
| 394 | Prime Energy Corp | Charleston, WV 25301-1707-1707 | Oil & Gas Operator | Sep 2015 |
| 395 | Prime Operating Company | Houston, TX 77024 | Oil & Gas Operator | Mar 2025 |
| 396 | Primexx Operating Corporation | Dallas, TX 75206 | Oil & Gas Operator | Mar 2024 |
| 397 | Primrose Jimmie | | Oil Operator | Feb 1998 |
| 398 | Primrose Operating Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Jun 2007 |
| 399 | Prince Brothers Drilling Co | Electra, TX 76360 | Oil & Gas Operator | Apr 2015 |
| 400 | Princess Three Corporation | Henderson, TX 75653 | Oil & Gas Operator | Apr 2020 |