| 301 | Paragon Oil Co | | Oil & Gas Operator | Oct 1991 |
| 302 | Paragon Production Company | Edmond, OK 73013-5051 | Oil & Gas Operator | Feb 2021 |
| 303 | Paragon Resources, Inc | | Oil & Gas Operator | Nov 1991 |
| 304 | Paragon Trading Co., LLC | | Oil Operator | Dec 2009 |
| 305 | Parallel Energy LP | Tulsa, OK 74136 | Oil & Gas Operator | Dec 2015 |
| 306 | Parallel Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | Jan 2010 |
| 307 | Parallel Petroleum LLC | Midland, TX 79702 | Oil & Gas Operator | Jun 2025 |
| 308 | Paramore Oil Company | Duncan, OK 73533 | Oil & Gas Operator | Apr 2022 |
| 309 | Paramount Enterprises Inc | Hays, KS 67601 | Oil Operator | Aug 2000 |
| 310 | Paramount Petroleum Corp | Dallas, TX 75374 | Oil Operator | Dec 2000 |
| 311 | Paramount Producing, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Oct 1996 |
| 312 | Parapetroleum | Kerrville, TX 78028 | Oil & Gas Operator | Feb 1997 |
| 313 | Parawon Operating LLC | Mobile, AL 36602 | Oil Operator | Oct 2011 |
| 314 | Pardee Production Co. | Skiatook, OK 74070 | Oil & Gas Operator | Mar 2021 |
| 315 | Pardue Energy Inc. | Dallas, TX 75230 | Oil & Gas Operator | Dec 2015 |
| 316 | Pardue Oil | Breckenridge, TX 76424 | Oil & Gas Operator | Sep 2006 |
| 317 | Pardue Oil, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Jun 2025 |
| 318 | Pardue, William M., III | Fort Worth, TX 76116 | Oil & Gas Operator | Dec 1996 |
| 319 | Pardus Oil & Gas Operating, LP | Tulsa, OK 74114 | Oil & Gas Operator | Apr 2022 |
| 320 | Parham Edith | Beggs, OK 74421-2436 | Oil Operator | Oct 2024 |
| 321 | Paris Valley Petroleum | | Oil Operator | Dec 2004 |
| 322 | Parish Operating LLC | | Oil Operator | Oct 2024 |
| 323 | Parish Petroleum Company | Tulsa, OK 74137 | Oil & Gas Operator | Feb 2025 |
| 324 | Parish, John R. | Andrews, TX 79714 | Oil & Gas Operator | Jun 2025 |
| 325 | Park & Park Oil Co. | Allen, TX 75002 | Oil & Gas Operator | Jun 2025 |
| 326 | Park Avenue Exploration Corp | Oklahoma City, OK 73102-5604 | Oil & Gas Operator | Sep 2011 |
| 327 | Park Avenue Resources, Inc. | San Antonio, TX 78212 | Oil Operator | Jun 2025 |
| 328 | Park Exploration Inc | | Oil & Gas Operator | Nov 2012 |
| 329 | Park Kenneth Y | Skiatook, OK 74070-6060 | Oil & Gas Operator | Feb 2025 |
| 330 | Park Oil Properties LLC | Plano, TX 75025 | Oil Operator | Oct 2019 |
| 331 | Park Robert E | | Oil Operator | May 1983 |
| 332 | Park William M | Sperry, OK 74073 | Oil & Gas Operator | Feb 2025 |
| 333 | Parker & Parker Oil & Gas Inc | Los Lunas, NM 87031 | Oil & Gas Operator | Jul 2017 |
| 334 | Parker & Parsley | | Oil & Gas Operator | Dec 1996 |
| 335 | Parker & Parsley Acq. Group LLC | Midland, TX 79702 | Oil & Gas Operator | Aug 2002 |
| 336 | Parker & Parsley Dev Co | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 337 | Parker & Parsley Dev LP | Irving, TX 75039-3745 | Oil & Gas Operator | Mar 2015 |
| 338 | Parker & Parsley Development Co. | Midland, TX 79702 | Oil & Gas Operator | May 1995 |
| 339 | Parker & Parsley Development L.P | Midland, TX 79702 | Oil & Gas Operator | Oct 2007 |
| 340 | Parker & Parsley Devpt L P | | Oil & Gas Operator | Oct 1997 |
| 341 | Parker & Parsley Operating LLC | Midland, TX 79702 | Oil & Gas Operator | Nov 2000 |
| 342 | Parker & Parsley Petroleum Co. | | Oil & Gas Operator | Dec 1990 |
| 343 | Parker & Parsley Producing LP | Midland, TX 79702 | Oil & Gas Operator | Oct 1997 |
| 344 | Parker & Parsley, Wpi Agent | Midland, TX 79701 | Oil & Gas Operator | Oct 1997 |
| 345 | Parker Energy Company | Breckenridge, TX 76424 | Oil & Gas Operator | Jun 2025 |
| 346 | Parker Energy Tech Inc | Salt Lake City, UT 84171 | Oil Operator | Nov 2013 |
| 347 | Parker Enterprises, Inc. | | Oil & Gas Operator | Jun 1999 |
| 348 | Parker Gas Company | | Oil & Gas Operator | Aug 2020 |
| 349 | Parker Hannifin Corporation | Ravenna, OH 44266 | Oil & Gas Operator | Dec 2024 |
| 350 | Parker James A | Sand Springs, OK 74063 | Oil & Gas Operator | Mar 2025 |
| 351 | Parker Joe | Talala, OK 74080-3556 | Oil & Gas Operator | Dec 2012 |
| 352 | Parker Oil Company | Abilene, TX 79601 | Oil & Gas Operator | Feb 2024 |
| 353 | Parker Operating Co., Inc. | Aledo, TX 76008 | Oil & Gas Operator | Sep 2000 |
| 354 | Parker Shirley M | Tulsa, OK 74136 | Oil Operator | Jun 2013 |
| 355 | Parker Trucking And Assoc. | Independence, MO 64052 | Oil Operator | Aug 1996 |
| 356 | Parker, Robert Production, Inc. | Alice, TX 78333 | Gas Operator | Nov 1996 |
| 357 | Parkinsol Oil Company | Seminole, OK 74868-1648 | Oil & Gas Operator | Oct 2014 |
| 358 | Parklan Oil | | Oil Operator | Dec 2016 |
| 359 | Parko Oil | Los Lunas, NM 87031 | Oil & Gas Operator | Jul 2017 |
| 360 | Parks Bill M | Seminole, OK 74818-1648 | Oil & Gas Operator | Apr 2014 |
| 361 | Parks Jack Concrete Co | Hominy, OK 74035 | Oil Operator | Feb 2025 |
| 362 | Parks James L | Edmond, OK 73034 | Oil & Gas Operator | Aug 2005 |
| 363 | Parks Tex M Trust | Dallas, TX 75220-3864 | Oil Operator | Aug 2017 |
| 364 | Parks, Lawrence E | Big Bend, WV 26136-0000 | Oil & Gas Operator | Nov 2013 |
| 365 | Parks, Rhone Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Jun 2025 |
| 366 | Parkside Pet Of Ohio Inc | Granville, OH 43023 | Oil & Gas Operator | Dec 1987 |
| 367 | Parkway Petroleum, Inc. | Giddings, TX 78942 | Oil & Gas Operator | Jul 1997 |
| 368 | Parkwood Production, Inc. | Buna, TX 77612 | Oil Operator | Jun 2025 |
| 369 | Parlay Oil Company | | Oil Operator | Dec 2002 |
| 370 | Parmelee, Terrence G. E., Jr. | Chagrin Falls, OH 44023 | Gas Operator | Dec 2023 |
| 371 | Parmer, I. A. | Abilene, TX 79606 | Oil & Gas Operator | Oct 1993 |
| 372 | Parnell Operating | Kamay, TX 76369 | Oil & Gas Operator | Jun 2025 |
| 373 | Parnes Oil Company | | Oil Operator | Jul 1994 |
| 374 | Paroco DRLG Funds Inc | Houston, TX 77002 | Oil & Gas Operator | Dec 1993 |
| 375 | Parrish Corporat | | Oil & Gas Operator | Oct 1994 |
| 376 | Parrish Corporation | Wichita, KS 67202 | Oil & Gas Operator | Jan 2025 |
| 377 | Parrish Jr W F | Ardmore, OK 73401-2941 | Oil & Gas Operator | Feb 2025 |
| 378 | Parrish, H Dwane & Rhonda K | Artesia, NM 88210 | Oil & Gas Operator | Apr 2022 |
| 379 | Parrot Energy Company | Cortland, OH 44410 | Oil & Gas Operator | Dec 2024 |
| 380 | Parsage Oil Company, L.L.C. | | Oil & Gas Operator | Feb 2025 |
| 381 | Parsell, R. W. | Whitlash, MT 59545 | Oil & Gas Operator | Feb 2025 |
| 382 | Parsell, RF Partnership | Bellevue, WA 98004 | Oil Operator | Apr 2025 |
| 383 | Parsley Energy Operations, LLC | Irving, TX 75038 | Oil & Gas Operator | Jan 2021 |
| 384 | Parsley, Amos | Wichita Falls, TX 76301 | Oil & Gas Operator | Mar 2008 |
| 385 | Parsons Engineering Corporation | Tulsa, OK 74137-7505 | Oil & Gas Operator | Oct 2017 |
| 386 | Partech Investments LLC | Breckenridge, TX 76424 | Oil & Gas Operator | Jun 2025 |
| 387 | Partee Drilling Inc. | Big Spring, TX 79721 | Oil & Gas Operator | Jun 2025 |
| 388 | Parten Oil Co. | Houston, TX 77060 | Oil & Gas Operator | Jan 1994 |
| 389 | Parten Operating Inc. | Houston, TX 77069 | Oil & Gas Operator | Jun 2025 |
| 390 | Parten, Kenneth N. | St John, KS 67576 | Oil & Gas Operator | May 2009 |
| 391 | Partin, Charles | Atascosa, TX 78002 | Oil & Gas Operator | Aug 2005 |
| 392 | Partners In Crude, Inc. | Ponca City, OK 74602 | Oil & Gas Operator | Dec 1997 |
| 393 | Partners Oil Company | Tulsa, OK 74135 | Oil & Gas Operator | Aug 1995 |
| 394 | Partners Petrole | | Oil Operator | Oct 1992 |
| 395 | Partners Petroleum Inc | Independence, OH 44131 | Oil & Gas Operator | Dec 1988 |
| 396 | Partners Production, Inc. | Caldwell, TX 77836 | Oil & Gas Operator | Jun 2025 |
| 397 | Partyka, Pauline D. | | Gas Operator | Dec 2023 |
| 398 | Parwest Land Exploration, Inc. | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2025 |
| 399 | Pasadena Oil And Gas Corp | | Oil & Gas Operator | Dec 2001 |
| 400 | Paschal Petroleum, Inc. | Dallas, TX 75380 | Oil & Gas Operator | Apr 1994 |