| 401 | Partin, Charles | Atascosa, TX 78002 | Oil & Gas Operator | Aug 2005 |
| 402 | Partners In Crude, Inc. | Ponca City, OK 74602 | Oil & Gas Operator | Dec 1997 |
| 403 | Partners Oil Company | Tulsa, OK 74135 | Oil & Gas Operator | Aug 1995 |
| 404 | Partners Petrole | | Oil Operator | Oct 1992 |
| 405 | Partners Petroleum Inc | Independence, OH 44131 | Oil & Gas Operator | Dec 1988 |
| 406 | Partners Production, Inc. | Caldwell, TX 77836 | Oil & Gas Operator | Feb 2026 |
| 407 | Partyka, Joseph | Forestville, NY 14062 | Gas Operator | Dec 2024 |
| 408 | Parwest Land Exploration Inc | Oklahoma City, OK 73112 | Oil & Gas Operator | Nov 2025 |
| 409 | Pasadena Oil And Gas Corp | | Oil & Gas Operator | Dec 2001 |
| 410 | Paschal Petroleum, Inc. | Dallas, TX 75380 | Oil & Gas Operator | Apr 1994 |
| 411 | Paschal, Phil A. | Kilgore, TX 75662 | Oil Operator | Aug 2021 |
| 412 | Paschal, Shannon | Kilgore, TX 75663 | Oil Operator | Feb 2026 |
| 413 | Pasco Oil Company | Oklahoma City, OK 73172-0454 | Oil & Gas Operator | Aug 2000 |
| 414 | Pash Energy, Inc. | Borger, TX 79008 | Oil & Gas Operator | Feb 2026 |
| 415 | Pasnik, Joshua | Orchard Park, NY 14127 | Gas Operator | Dec 2024 |
| 416 | Pasnik, Matthew J., Pasnik, Linda H. | Eden, NY 14057 | Gas Operator | Dec 2024 |
| 417 | Paso-Grande Inc | Phoenix, AZ 85018 | Gas Operator | Jan 2007 |
| 418 | Passmore Robert W | Ada, OK 74820-5501 | Oil & Gas Operator | May 2022 |
| 419 | Passmore, Mike F. | Monahans, TX 79756 | Oil & Gas Operator | Feb 2026 |
| 420 | Pasture Production Company | Bryan, TX 77808 | Oil & Gas Operator | Apr 2005 |
| 421 | Patalon Robert E | Erie, PA 16505-0444 | Gas Operator | Dec 2025 |
| 422 | Patara Andover I LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2014 |
| 423 | Patara Oil & Gas LLC | Dallas, TX 75219 | Oil & Gas Operator | Mar 2018 |
| 424 | Patchwork Oil & Gas LLC | Davisville, WV 26142 | Oil & Gas Operator | Dec 2021 |
| 425 | Patco Investments Inc | Seminole, OK 74868 | Oil Operator | Nov 2007 |
| 426 | Pate, L. T. | Austin, TX 78701 | Oil & Gas Operator | Aug 1994 |
| 427 | Pate-Dombaugh Pe | | Oil Operator | Sep 1991 |
| 428 | Pathex Petroleum, Inc | | Gas Operator | Dec 2013 |
| 429 | Pathfinder Capital L.C. | Dallas, TX 75219 | Oil Operator | Mar 2008 |
| 430 | Pathfinder Energy Inc | Casper, WY 82605 | Oil & Gas Operator | May 2024 |
| 431 | Pathfinder Exploration LLC | Norman, OK 73069-8516 | Gas Operator | Aug 2003 |
| 432 | Patina Oil & Gas Corporation | Denver, CO 80202 | Oil & Gas Operator | May 2016 |
| 433 | Patina Oklahoma Corp | Duncan, OK 73533-9523 | Oil & Gas Operator | Nov 2014 |
| 434 | Patina San Juan Incorporated | Farmington, NM 87402 | Oil & Gas Operator | Dec 2007 |
| 435 | Patkim Production Inc. | | Oil Operator | Jan 2025 |
| 436 | Patno Oil & Gas Company | Zapata, TX 78076 | Oil & Gas Operator | Feb 2026 |
| 437 | Patoil Corp. | San Antonio, TX 78205 | Oil & Gas Operator | Aug 2003 |
| 438 | Patricia Oil Company | Tuleta, TX 78162 | Oil Operator | Sep 2008 |
| 439 | Patrick & Hadley | Nocona, TX 76255 | Oil & Gas Operator | Jul 1999 |
| 440 | Patrick & Vaughn | Oklahoma City, OK 73154 | Oil & Gas Operator | Sep 2005 |
| 441 | Patrick Development Corporation | Leawood, KS 66206 | Oil Operator | Sep 2025 |
| 442 | Patrick Exploration Company | Tulsa, OK 74136 | Oil & Gas Operator | Apr 2011 |
| 443 | Patrick Pet. Corp. Of Michigan | Houston, TX 77227 | Oil & Gas Operator | Aug 1995 |
| 444 | Patrick Petroleum Co. | Jackson, MI 49201 | Oil & Gas Operator | Nov 1993 |
| 445 | Patrick Petroleum Corp Of Michigan | | Oil & Gas Operator | Nov 1993 |
| 446 | Patrick Petroleum Corporation | | Oil & Gas Operator | Oct 1984 |
| 447 | Patrick Production Company | Houston, TX 77027 | Oil & Gas Operator | Feb 2026 |
| 448 | Patrick R J & Jack H Vaughn | Oklahoma City, OK 73154 | Oil & Gas Operator | Feb 2002 |
| 449 | Patrick R J Oper | | Oil & Gas Operator | Jan 1995 |
| 450 | Patrick RJ Operating Co | Liberal, KS 67905-1157 | Oil & Gas Operator | Nov 2014 |
| 451 | Patrick Shipley | Indiana, PA 15701-6501 | Oil & Gas Operator | Dec 2016 |
| 452 | Patrick, G.R. | Nocona, TX 76255 | Oil Operator | Feb 2026 |
| 453 | Patrick, George & Patrick, Roger | Nocona, TX 76255 | Oil & Gas Operator | Jul 1999 |
| 454 | Patrick, Joe Ben | Petrolia, TX 76377 | Oil & Gas Operator | Oct 2009 |
| 455 | Patriot E & P Company | Tyler, TX 75710 | Oil & Gas Operator | Aug 2004 |
| 456 | Patriot Energy Resources LLC | Golden, CO 80401 | Gas Operator | Aug 2014 |
| 457 | Patriot Exploration Corp | Stahlstown, PA 15687-1301 | Oil & Gas Operator | Dec 2025 |
| 458 | Patriot Oil Company, LLC | | Oil Operator | Aug 2025 |
| 459 | Patriot Operating Company, Inc. | Houston, TX 77008 | Oil & Gas Operator | Sep 2003 |
| 460 | Patriot Petroleum Co LLC | Coppell, TX 75019-4216 | Oil & Gas Operator | Jan 2013 |
| 461 | Patriot Petroleum Company | Bethany, OK 73008 | Oil & Gas Operator | Mar 2015 |
| 462 | Patriot Production LLC | Southlake, TX 76092 | Oil & Gas Operator | Apr 2023 |
| 463 | Patriot Resources LLC | | Oil & Gas Operator | Dec 2025 |
| 464 | Patriot Resources, Inc. | Midland, TX 79701 | Oil & Gas Operator | Oct 2017 |
| 465 | Patriot Services, Inc. | Westbrook, TX 79565 | Oil & Gas Operator | Mar 2008 |
| 466 | Patron Energy LLC | Tulsa, OK 74103 | Oil & Gas Operator | Apr 2015 |
| 467 | Pats Rent All | | Oil Operator | Jul 2002 |
| 468 | Patterson & Patterson Oil Co | Cushing, OK 74023 | Oil Operator | Aug 1995 |
| 469 | Patterson Bobby Ray | Haskell, OK 74436-8809 | Oil & Gas Operator | Apr 2020 |
| 470 | Patterson Eddy L | Tulsa, OK 74133 | Oil & Gas Operator | Feb 2022 |
| 471 | Patterson Energy Corporation | Dallas, TX 75367 | Oil & Gas Operator | Feb 2026 |
| 472 | Patterson Energy LLC | Hays, KS 67601 | Oil & Gas Operator | Sep 2025 |
| 473 | Patterson George E | Ada, OK 74820-1108 | Oil & Gas Operator | Jul 2016 |
| 474 | Patterson Jerry | | Oil Operator | Jan 1995 |
| 475 | Patterson John H | Shawnee, OK 74801 | Oil Operator | Dec 2006 |
| 476 | Patterson Oil Company, The | Eastland, TX 76448 | Oil & Gas Operator | Nov 2025 |
| 477 | Patterson Operating & Pumping Inc Dba/Penerg | Midland, TX 79710 | Oil & Gas Operator | Jul 2018 |
| 478 | Patterson Operations LLC | Wichita, KS 67228 | Oil Operator | Sep 2025 |
| 479 | Patterson Petroleum LLC | Snyder, TX 79550 | Oil & Gas Operator | Oct 2007 |
| 480 | Patterson Petroleum LP | Snyder, TX 79550 | Oil & Gas Operator | Mar 2008 |
| 481 | Patterson Petroleum, Inc. | Snyder, TX 79550 | Oil & Gas Operator | Feb 2000 |
| 482 | Patterson Production Co. | Phillipsburg, KS 67661 | Oil Operator | Jul 1998 |
| 483 | Patterson Resources, Inc. | | Oil & Gas Operator | Apr 1984 |
| 484 | Patterson Russell B | Wewoka, OK 74884-1262 | Oil & Gas Operator | Feb 2020 |
| 485 | Patterson, Ben M., Jr. | San Antonio, TX 78216 | Oil & Gas Operator | Mar 2003 |
| 486 | Patteson Brother | | Oil Operator | Feb 1990 |
| 487 | Patteson Oil | | Oil Operator | Dec 2009 |
| 488 | Patteson Oil, A General Partnership | Moline, KS 67353 | Oil Operator | Nov 2019 |
| 489 | Patteson, Thomas Wade | Moline, KS 67353 | Oil Operator | Sep 2025 |
| 490 | Patteson-Sheel O | | Oil Operator | Oct 1990 |
| 491 | Pattie Creek Oil | | Oil Operator | May 1995 |
| 492 | Pattie Creek Oil Company | Madison, KS 66860 | Oil Operator | Feb 2000 |
| 493 | Patton Coleman Exploration Inc. | Abilene, TX 79604 | Oil & Gas Operator | Feb 2026 |
| 494 | Patton Dale | Stillwater, OK 74074 | Oil & Gas Operator | Dec 2011 |
| 495 | Patton Exploration, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Feb 2026 |
| 496 | Patton Oil Compa | | Oil & Gas Operator | Nov 1994 |
| 497 | Patton Oil Company | Midland, TX 79702 | Oil & Gas Operator | Jun 2007 |
| 498 | Patton Oil Corp. | Corpus Chrsti, TX 78466 | Oil & Gas Operator | Aug 2003 |
| 499 | Patton Operating Co. | Kilgore, TX 75663 | Oil & Gas Operator | Nov 1997 |
| 500 | Patton, Donald L & Jerry | Electra, TX 76360 | Oil & Gas Operator | Aug 2007 |