| 8401 | Pentex Operating Company | Oklahoma City, OK 73132 | Oil & Gas Operator | Oct 1994 |
| 8402 | Penwell Energy, Inc. | Houston, TX 77057 | Oil & Gas Operator | Apr 2025 |
| 8403 | Penwell South Operating LLC | Houston, TX 77269 | Oil Operator | Apr 2025 |
| 8404 | Peoples Energy Prod.-TX, L.P. | Houston, TX 77002 | Oil & Gas Operator | Sep 2007 |
| 8405 | Percussion Petroleum Oper II,LLC | Houston, TX 77042 | Oil & Gas Operator | Jul 2023 |
| 8406 | Perdido Energy, LLC | Houston, TX 77251 | Oil & Gas Operator | Apr 2025 |
| 8407 | Perdure Petroleum LLC | Allen, TX 75013 | Oil & Gas Operator | Oct 2021 |
| 8408 | Peregrine Energy, Inc. | Spring, TX 77393 | Oil & Gas Operator | Jul 1999 |
| 8409 | Peregrine Petroleum PRTNR, LTD. | Dallas, TX 75201 | Oil & Gas Operator | Apr 2025 |
| 8410 | Perenco LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2005 |
| 8411 | Perez, H. F. | Alice, TX 78332 | Oil & Gas Operator | May 2023 |
| 8412 | Performance Operating Partners, LLC | Shreveport, LA 71164 | Oil & Gas Operator | Apr 2025 |
| 8413 | Pergerson Energy, L.L.C. | Richmond, VA 23225 | Oil Operator | Apr 2025 |
| 8414 | Perimeter Resource Company | Midland, TX 79702 | Oil & Gas Operator | Apr 2025 |
| 8415 | Periscope Operating LLC | McKinney, TX 75069 | Oil & Gas Operator | Jun 2020 |
| 8416 | Perkins, Eugene O. | Boerne, TX 78015 | Oil & Gas Operator | Apr 2025 |
| 8417 | Perkins-Prothro Company | Wichita Falls, TX 76308 | Oil & Gas Operator | May 2002 |
| 8418 | Perlman,I.H.Oil & Gas Properties | Houston, TX 77056 | Oil & Gas Operator | Mar 2008 |
| 8419 | Permex Petroleum Corporation | Graham, TX 76450 | Oil & Gas Operator | Apr 2025 |
| 8420 | Permian Basin Oil Corporation | Odessa, TX 79762 | Oil & Gas Operator | Apr 2025 |
| 8421 | Permian Deep Rock Oil Co., LLC | Midland, TX 79702 | Oil & Gas Operator | Apr 2025 |
| 8422 | Permian Development, Inc. | Midland, TX 79701 | Oil & Gas Operator | Mar 2008 |
| 8423 | Permian Legend LLC | San Marcos, TX 78666 | Oil Operator | Apr 2025 |
| 8424 | Permian Natural Resources | Pflugerville, TX 78660 | Oil & Gas Operator | Apr 2025 |
| 8425 | Permian Pacific Resources, Inc. | Dallas, TX 75230 | Oil & Gas Operator | Aug 2003 |
| 8426 | Permian Resources Operating, LLC | Midland, TX 79701 | Oil & Gas Operator | Apr 2025 |
| 8427 | Permian Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 8428 | Permian Resources, LLC | Houston, TX 77002 | Oil & Gas Operator | Mar 2018 |
| 8429 | Permian Services Co., LLC | Midland, TX 79702 | Oil & Gas Operator | Sep 2013 |
| 8430 | Permian Solutions LLC | Midland, TX 79702 | Oil Operator | Apr 2025 |
| 8431 | Permian Surveys | Midland, TX 79707 | Oil & Gas Operator | Oct 1999 |
| 8432 | Permian West Corp. | Odessa, TX 79762 | Oil & Gas Operator | Apr 2025 |
| 8433 | Permico Corporation | Stafford, TX 77477 | Oil & Gas Operator | Nov 2003 |
| 8434 | Perry Operating Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 2025 |
| 8435 | Perry Producing Company, Inc. | Ackerly, TX 79713 | Oil & Gas Operator | Apr 2025 |
| 8436 | Perry, J. R. & Co. | Haskell, TX 79521 | Oil & Gas Operator | Jul 2015 |
| 8437 | Perryman Exp. And Prod., LLC | Athens, TX 75751 | Oil & Gas Operator | Apr 2025 |
| 8438 | Perryman Operating Company | Athens, TX 75751 | Oil & Gas Operator | Apr 2025 |
| 8439 | Perryton Operating Co., Inc. | Perryton, TX 79070 | Oil & Gas Operator | Apr 2025 |
| 8440 | Person Oil Co. | Bowie, TX 76230 | Oil & Gas Operator | Sep 2002 |
| 8441 | Person, Claude | Bowie, TX 76230 | Oil & Gas Operator | Apr 2007 |
| 8442 | Person, J.S., Inc. | Longview, TX 75606 | Oil & Gas Operator | Apr 2025 |
| 8443 | Petco Energy Corporation | Hinsdale, IL 60521 | Oil & Gas Operator | Apr 2025 |
| 8444 | Petco Petroleum Corp | Hinsdale, IL 60521 | Oil & Gas Operator | Jan 2025 |
| 8445 | Petech Enterprises, Inc. | Houston, TX 77066 | Oil & Gas Operator | Jan 2004 |
| 8446 | Peters Petroleum Corporation | Dallas, TX 75243 | Oil & Gas Operator | Jan 2014 |
| 8447 | Peterson & Roberts | Loving, TX 76460 | Oil & Gas Operator | Mar 1998 |
| 8448 | Peterson Oil And Gas LLC | Wichita Falls, TX 76310 | Oil & Gas Operator | Apr 2025 |
| 8449 | Peterson, Don Company | Loving, TX 76460 | Oil & Gas Operator | Jul 2017 |
| 8450 | Petex | Breckenridge, TX 76424 | Oil & Gas Operator | Apr 2025 |
| 8451 | Petra Oleum Corp. | Midland, TX 79702 | Oil & Gas Operator | Apr 2025 |
| 8452 | Petralis Energy Resources, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2025 |
| 8453 | Petram Oil And Gas, LLC | Richmond, TX 77407 | Oil Operator | Apr 2025 |
| 8454 | Petro 2000 Exploration Co. | Katy, TX 77450 | Oil & Gas Operator | Nov 2011 |
| 8455 | Petro Delta | Rockdale, TX 76567 | Oil Operator | Apr 2025 |
| 8456 | Petro Drilling & Producing Co. | Archer City, TX 76351 | Oil & Gas Operator | Apr 1997 |
| 8457 | Petro Hi-Tech, Inc. | Pasadena, TX 77505 | Oil & Gas Operator | Feb 2008 |
| 8458 | Petro Lions, LLC | Somerset, TX 78069 | Oil Operator | Apr 2025 |
| 8459 | Petro Plex Oil Co Inc. | Homosassa, FL 34448 | Oil & Gas Operator | Jul 2020 |
| 8460 | Petro Resources, Inc. | Fulton, TX 78358 | Oil & Gas Operator | Apr 2025 |
| 8461 | Petro Ventures Inc | Oklahoma City, OK 73118 | Oil & Gas Operator | Dec 2019 |
| 8462 | Petro Vest, Inc. | Houston, TX 77046 | Oil & Gas Operator | Sep 2014 |
| 8463 | Petro-Beth Oil & Gas, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Mar 2006 |
| 8464 | Petro-Chem Operating Company, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Apr 2025 |
| 8465 | Petro-Guard Company, Inc. | Houston, TX 77057 | Oil & Gas Operator | Nov 2014 |
| 8466 | Petro-Guard Production,L.L.C. | Houston, TX 77063 | Oil & Gas Operator | Dec 2024 |
| 8467 | Petro-Haley | Borger, TX 79008 | Oil & Gas Operator | Apr 2025 |
| 8468 | Petro-Hunt Corporation | Dallas, TX 75201 | Oil & Gas Operator | Jun 2003 |
| 8469 | Petro-Hunt Permian, LLC | Dallas, TX 75201 | Oil & Gas Operator | Apr 2025 |
| 8470 | Petro-Hunt, L.L.C. | Dallas, TX 75201 | Oil & Gas Operator | Apr 2025 |
| 8471 | Petro-Raider LLC | Midland, TX 79702 | Oil & Gas Operator | Apr 2025 |
| 8472 | Petro-Smith Operating LLC | Houston, TX 77010 | Oil & Gas Operator | Apr 2025 |
| 8473 | Petro-Tex Energy & Expl.Co.,Inc. | Llano, TX 78643 | Oil & Gas Operator | Apr 2025 |
| 8474 | Petro-West Corporation | Lubbock, TX 79404 | Oil & Gas Operator | Oct 2001 |
| 8475 | Petrobal Omega 1, LLC | Little Elm, TX 75068 | Oil & Gas Operator | Apr 2025 |
| 8476 | Petrocat Innovations, LLC | Forney, TX 75126 | Oil Operator | Apr 2025 |
| 8477 | Petrocoastal, Inc. | Frisco, TX 75036 | Oil & Gas Operator | Apr 2025 |
| 8478 | Petrocorp Acquisition Company | Tulsa, OK 74121 | Oil & Gas Operator | Dec 2002 |
| 8479 | Petrocorp Incorporated,A TX.Corp | Tulsa, OK 74170 | Oil & Gas Operator | Apr 2005 |
| 8480 | Petrodata Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 2025 |
| 8481 | Petrodome Operating, LLC | Houston, TX 77265 | Oil & Gas Operator | Dec 2024 |
| 8482 | Petrofunds, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Jun 1996 |
| 8483 | Petrogas Energy Services, LLC | Dallas, TX 75214 | Oil Operator | Apr 2025 |
| 8484 | Petrogas Operating Corporation | Garland, TX 75043 | Oil Operator | Feb 2010 |
| 8485 | Petrogen, Incorporated | Katy, TX 77450 | Oil & Gas Operator | Jan 2012 |
| 8486 | Petroglyph Operating Co | Boise, ID 83709 | Oil & Gas Operator | Jul 2017 |
| 8487 | Petrogulf Corporation | Denver, CO 80202 | Oil & Gas Operator | Apr 2025 |
| 8488 | Petrohawk Energy Corporation | Houston, TX 77002 | Oil & Gas Operator | Jun 2005 |
| 8489 | Petrohawk Operating Company | Houston, TX 77056 | Oil & Gas Operator | Oct 2021 |
| 8490 | Petrol Industries, Inc. | Shreveport, LA 71137 | Oil & Gas Operator | Jun 2012 |
| 8491 | Petrolegacy Energy II, LLC | Denver, CO 80202 | Oil & Gas Operator | Jun 2023 |
| 8492 | Petrolero Corp. | San Antonio, TX 78205 | Oil & Gas Operator | Feb 1998 |
| 8493 | Petrolero, LLC | Plano, TX 75026 | Oil & Gas Operator | Apr 2025 |
| 8494 | Petroleum Advisors Int'L., Inc. | Houston, TX 77224 | Gas Operator | Jun 2005 |
| 8495 | Petroleum Capital, L.C. | Dallas, TX 75367 | Oil & Gas Operator | Apr 2025 |
| 8496 | Petroleum Inc | Wichita, KS 67202 | Oil & Gas Operator | Oct 2021 |
| 8497 | Petroleum International, Inc. | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2000 |
| 8498 | Petroleum Investments, Inc | Shreveport, LA 71101 | Oil & Gas Operator | Dec 1977 |
| 8499 | Petroleum Land Company | Abilene, TX 79606 | Oil & Gas Operator | May 2000 |
| 8500 | Petroleum Management Int'L, Inc. | Sugar Land, TX 77487 | Oil & Gas Operator | Oct 1993 |