| 21301 | Palo Chop Development LLC | | Oil Operator | Aug 2018 |
| 21302 | Palo Cross, LLC | Graham, TX 76450 | Oil & Gas Operator | Sep 2024 |
| 21303 | Palo Duro Midstream (Texas Gathreing) L.P | Houston, TX 77002 | Oil & Gas Operator | Aug 2022 |
| 21304 | Palo Duro Resources LLC | Pampa, TX 79066 | Oil & Gas Operator | Sep 2024 |
| 21305 | Palo Petroleum, Inc. | Dallas, TX 75360 | Oil & Gas Operator | Sep 2024 |
| 21306 | Palo Pinto Gas Company | Snyder, TX 79550 | Oil & Gas Operator | Dec 1994 |
| 21307 | Palo Pinto Oil & Gas Corporation | Mineral Wells, TX 76068 | Oil & Gas Operator | Apr 2015 |
| 21308 | Palo Pinto Production, Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | Aug 1998 |
| 21309 | Paloma Blanca Well Service Inc. | Roswell, NM 88202 | Oil & Gas Operator | Jun 2002 |
| 21310 | Paloma Natural Gas, LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2023 |
| 21311 | Paloma Operating Co Inc | Houston, TX 77002-5220 | Oil & Gas Operator | Jul 2024 |
| 21312 | Paloma Operating, LLC | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Sep 2024 |
| 21313 | Paloma Resources Inc | Roswell, NM 88201 | Oil & Gas Operator | Dec 1998 |
| 21314 | Paloma Resources, LLC | Houston, TX 77002 | Oil & Gas Operator | Jun 2018 |
| 21315 | Palomino Petrole | | Oil & Gas Operator | Dec 1995 |
| 21316 | Palomino Petroleum | Newton, KS 67114 | Oil Operator | Oct 2003 |
| 21317 | Palomino Petroleum Inc | Newton, KS 67114 | Oil & Gas Operator | May 2024 |
| 21318 | Palrich Oil Corporation | Abilene, TX 79601 | Oil & Gas Operator | Apr 2004 |
| 21319 | Paluca Petroleum Inc | Holdenville, OK 74848 | Oil & Gas Operator | Jun 2024 |
| 21320 | Paluxy Oil & Gas, LLC | Forney, TX 75126 | Oil & Gas Operator | Sep 2024 |
| 21321 | Paluxy Sands Corporation | Sonora, TX 76950 | Oil & Gas Operator | Jun 2012 |
| 21322 | Pam-Ark Oil Producers | | Oil Operator | Dec 1985 |
| 21323 | Pampa Water Disposal, Inc. | Booker, TX 79005 | Oil & Gas Operator | Sep 2024 |
| 21324 | Pan American Energy Corporation | | Oil & Gas Operator | Dec 1998 |
| 21325 | Pan American Petroleum Cor | | Oil & Gas Operator | Dec 1981 |
| 21326 | Pan American Petroleum Corp | | Oil & Gas Operator | Jan 2008 |
| 21327 | Pan American Sales Corporation | Dallas, TX 75202 | Oil & Gas Operator | Mar 2001 |
| 21328 | Pan Energy Company, Inc. | Orchard Park, NY 14127 | Oil & Gas Operator | Dec 2023 |
| 21329 | Pan Petroleum Corp. | Abilene, TX 79608 | Oil & Gas Operator | Mar 2008 |
| 21330 | Pan Petroleum MLP | Kansas City, MO 64114 | Oil & Gas Operator | Aug 1997 |
| 21331 | Pan Resources, Inc. | Borger, TX 79007 | Oil & Gas Operator | Mar 2008 |
| 21332 | Pan Texas Petroleum Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2003 |
| 21333 | Pan Western Energy Corporation | Tulsa, OK 74114 | Oil & Gas Operator | Sep 2024 |
| 21334 | Pan Western Petroleum Co. | | Oil & Gas Operator | Dec 1993 |
| 21335 | Pan-Ok Production Company | | Oil & Gas Operator | Dec 2023 |
| 21336 | Panaco Production Co | Houston, TX 77002 | Oil & Gas Operator | Dec 1999 |
| 21337 | Panaco, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2024 |
| 21338 | Panada Exploration, Inc. | Tulsa, OK 74135 | Oil & Gas Operator | Jun 1996 |
| 21339 | Panadero Oil Company | Dallas, TX 75206 | Oil & Gas Operator | Apr 2002 |
| 21340 | Panamerican Operating Inc | Dallas, TX 75219 | Oil & Gas Operator | Sep 2024 |
| 21341 | Pancanadian Energy Resources Inc | | Oil & Gas Operator | Dec 2004 |
| 21342 | Pancanadian Petr | | Oil Operator | Aug 1990 |
| 21343 | Pancanadian Petroleum Company | | Oil & Gas Operator | Oct 1989 |
| 21344 | Panda Pipe & Equipment, Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 1996 |
| 21345 | Panenergy La Intrastate Co | | Oil Operator | Mar 2000 |
| 21346 | Panenergy Services Inc | Houston, TX 77525 | Oil & Gas Operator | May 2001 |
| 21347 | Panexco Operating LLC | Oklahoma City, OK 73103-2203 | Oil & Gas Operator | Oct 2014 |
| 21348 | Pangaea Exploration Corp | Edmond, OK 73013 | Oil & Gas Operator | May 2019 |
| 21349 | Pangborn Tom Dba Pangborn Exploration | | Oil & Gas Operator | Jan 1993 |
| 21350 | Pangea Corporation | Allen, TX 75013 | Oil & Gas Operator | Sep 2024 |
| 21351 | Pangea'S Edge Operating Company LLC | Plano, TX 75025 | Oil & Gas Operator | Sep 2024 |
| 21352 | Panhandle Easter | | Gas Operator | Dec 1986 |
| 21353 | Panhandle Eastern Pipeline Company LP | Houston, TX 77002-6803 | Oil & Gas Operator | Oct 1999 |
| 21354 | Panhandle Oil & Gas Consultants Inc | Woodward, OK 73802-5011 | Oil & Gas Operator | Jul 2015 |
| 21355 | Panhandle Oil & Gas Inc | Oklahoma City, OK 73112-5688 | Oil & Gas Operator | May 2007 |
| 21356 | Panhandle Oilfield Service Companies Inc | Liberal, KS 67905-1256 | Oil Operator | Sep 2000 |
| 21357 | Panhandle Petrol | | Oil Operator | Jun 1987 |
| 21358 | Panhandle Producing Co., Oper. | San Antonio, TX 78205 | Oil & Gas Operator | Oct 1993 |
| 21359 | Panhandle Producing Company | San Antonio, TX 78205 | Oil & Gas Operator | Oct 1993 |
| 21360 | Panhandle Trading Company | Houston, TX 77251-1642 | Oil & Gas Operator | Jun 2003 |
| 21361 | Pannonian Energy Inc | Englewood, CO 80112 | Oil & Gas Operator | Mar 2004 |
| 21362 | Panoak Oil & Gas Corporation | Tulsa, OK 74137 | Oil & Gas Operator | Aug 2018 |
| 21363 | Panoche Vallecitos Oil Co. | | Oil & Gas Operator | Jun 2024 |
| 21364 | Panola Corporation, The | Dallas, TX 75252 | Oil & Gas Operator | Sep 2002 |
| 21365 | Panotech Exploration Corp. | | Oil & Gas Operator | Jan 1983 |
| 21366 | Pantano Energy | San Antonio, TX 78258 | Oil & Gas Operator | Jul 1999 |
| 21367 | Pantera Energy Company | Amarillo, TX 79101 | Oil & Gas Operator | Sep 2024 |
| 21368 | Pantex Oil & Gas LLC | Ranger, TX 76470 | Oil & Gas Operator | Jul 2018 |
| 21369 | Panther Bayou Energy, LLC | Houston, TX 77070 | Oil & Gas Operator | Apr 2021 |
| 21370 | Panther City Energy LLC | San Antonio, TX 78205 | Oil & Gas Operator | Sep 2024 |
| 21371 | Panther Creek Mining, LLC | Lexington, KY 40475 | Gas Operator | Dec 2021 |
| 21372 | Panther Creek Resources, LLC | Denver, CO 80202 | Oil & Gas Operator | May 2012 |
| 21373 | Panther Energy Company III LLC | Tulsa, OK 74136 | Oil & Gas Operator | Jul 2020 |
| 21374 | Panther Energy Company, LLC | Tulsa, OK 74103 | Oil & Gas Operator | May 2022 |
| 21375 | Panther Exploration, LLC | Tulsa, OK 74136 | Oil & Gas Operator | Feb 2017 |
| 21376 | Panther Operating LLC | Pauls Valley, OK 73075 | Oil & Gas Operator | Jun 2024 |
| 21377 | Paoco-Walker | | Gas Operator | Sep 2011 |
| 21378 | Paoli Investors LTD | | Oil & Gas Operator | Aug 1985 |
| 21379 | Pap Oil Company Inc | Cement, OK 73017-0240 | Oil & Gas Operator | Nov 1998 |
| 21380 | Papal Enterprises Inc | Oklahoma City, OK 73154-1555 | Oil & Gas Operator | Apr 2015 |
| 21381 | Papco, Inc. | Warren, PA 16365 | Oil & Gas Operator | Sep 2024 |
| 21382 | Pape Oilfield Service Inc | | Oil & Gas Operator | Jul 2018 |
| 21383 | Papesch Robert J | Waterford, PA 16441-4607 | Gas Operator | Dec 2023 |
| 21384 | Papineau Drilling, Inc | Albany, KY 42602 | Oil Operator | Dec 2014 |
| 21385 | Pappe Court Jr | Kingfisher, OK 73750-0688 | Oil & Gas Operator | Nov 2001 |
| 21386 | Par Development | Midland, TX 79711 | Oil & Gas Operator | Sep 2024 |
| 21387 | Par Exploration Co | | Oil & Gas Operator | Oct 1986 |
| 21388 | Par Minerals Corporation | Shreveport, LA 71101 | Oil & Gas Operator | Sep 2024 |
| 21389 | Par Oil Company Inc | Denver, CO 80201 | Oil & Gas Operator | Jun 2003 |
| 21390 | Par Oil Corporation | | Oil & Gas Operator | Sep 1990 |
| 21391 | Par Oil Corporation, Et Al | | Oil & Gas Operator | Dec 1984 |
| 21392 | Par Pacific Holdings Inc | | Oil & Gas Operator | Apr 2015 |
| 21393 | Par Petroleum In | | Oil & Gas Operator | Jun 1993 |
| 21394 | Par Petroleum, Inc. | Liberal, KS 67901 | Gas Operator | Dec 2009 |
| 21395 | Par Producing Company | Snyder, TX 79550 | Oil & Gas Operator | Jun 2017 |
| 21396 | Par, Inc. | Oklahoma City, OK 73111 | Oil Operator | May 2016 |
| 21397 | Par-Co Drilling Inc. | | Oil Operator | Jul 2024 |
| 21398 | Par-Naylor | | Oil Operator | Mar 1985 |
| 21399 | Para Pro Corporation | Sedona, AZ 86336-5745 | Oil & Gas Operator | Jan 2005 |
| 21400 | Parabellum Energy Oper Co, LLC | Houston, TX 77056 | Oil Operator | Dec 2017 |