| 21201 | Padco LLC | | Oil & Gas Operator | Mar 2023 |
| 21202 | Padgett Oil Inc. | Sedan, KS 67361 | Oil Operator | May 2006 |
| 21203 | Padon, Frank B. Oil Oper., Inc. | Houston, TX 77227 | Oil & Gas Operator | Nov 1998 |
| 21204 | Padre Oil Co. | | Oil & Gas Operator | Jul 2026 |
| 21205 | Page Development, L.L.C. | | Oil Operator | Dec 2024 |
| 21206 | Page Energy | Eldorado, TX 76936 | Oil & Gas Operator | Mar 1997 |
| 21207 | Page Exploration | Midland, TX 79701 | Oil & Gas Operator | Apr 2007 |
| 21208 | Page Lew Barron | | Oil Operator | Dec 2025 |
| 21209 | Page Oil & Gas, LLC | Midland, TX 79701 | Oil & Gas Operator | Sep 2026 |
| 21210 | Page Operating, LLC | Midland, TX 79701 | Oil & Gas Operator | Aug 2010 |
| 21211 | Page Petroleum Inc | Calgary, AB T2P3M-3000 | Oil & Gas Operator | Nov 1998 |
| 21212 | Page, Allen | | Oil & Gas Operator | Dec 2014 |
| 21213 | Paine Petroleum Company LLC | | Oil Operator | Dec 2013 |
| 21214 | Paint Rock Operating, LLC | San Angelo, TX 76904 | Oil & Gas Operator | Sep 2026 |
| 21215 | Painted Pegasus Petroleum LLC | | Oil & Gas Operator | Jul 2024 |
| 21216 | Painter & McPhail | Bartlesville, OK 74006 | Oil Operator | Sep 1996 |
| 21217 | Painter Oil And Gas LTD. | | Oil & Gas Operator | Jun 1986 |
| 21218 | Painter Oil Comp | | Oil & Gas Operator | Jul 1993 |
| 21219 | Pairadice Oil And Gas Company LLC | Caldwell, TX 77836 | Oil Operator | Sep 2026 |
| 21220 | Paisano Minerals Company | Corpus Chrsti, TX 78477 | Oil & Gas Operator | Aug 2003 |
| 21221 | Paisano Petroleum, Inc. | San Antonio, TX 78246 | Oil & Gas Operator | Dec 2016 |
| 21222 | Paisano Production, Inc. | Somerset, TX 78069 | Oil Operator | Sep 2026 |
| 21223 | Paiute Oil & Mining Corp | Salt Lake City, UT 84117 | Oil & Gas Operator | Jun 1989 |
| 21224 | Pajaro Energy LLC | Santa Fe, NM 87501 | Oil & Gas Operator | Dec 2023 |
| 21225 | Pak Energy LLC | Calgary, AB T3A-5E8 | Oil Operator | Sep 2022 |
| 21226 | Pal Energy LLC | Guymon, OK 73942-1950 | Gas Operator | Aug 2009 |
| 21227 | Pal Kids Inc | Coronado, CA 92118 | Oil & Gas Operator | Nov 2000 |
| 21228 | Pal LLC | Gillette, WY 82718 | Oil Operator | Dec 2019 |
| 21229 | Palace Exploration Company | Houston, TX 77002 | Oil & Gas Operator | Mar 2007 |
| 21230 | Palace Operating Company | Tulsa, OK 74136 | Oil & Gas Operator | Aug 2009 |
| 21231 | Paladar Investments I, L.L.C. | Houston, TX 77090 | Oil & Gas Operator | Feb 2013 |
| 21232 | Paladin Drilling Company | McLeod, TX 75565 | Gas Operator | Sep 2011 |
| 21233 | Paladin Energy Corp. | Dallas, TX 75229 | Oil & Gas Operator | Jul 2017 |
| 21234 | Paladin Energy Partner LLC | Denver, CO 80201 | Oil & Gas Operator | Aug 2006 |
| 21235 | Paladin Exploration Co., Inc. | Plano, TX 75093 | Oil & Gas Operator | Feb 1995 |
| 21236 | Paladin Petroleum III, L.L.C. | Austin, TX 78746 | Oil & Gas Operator | Sep 2026 |
| 21237 | Paladin-Hayes, L.L.C. | Austin, TX 78746 | Oil & Gas Operator | Dec 1999 |
| 21238 | Paleo Oil & Gas, Inc. | Graham, TX 76450 | Oil & Gas Operator | Sep 2026 |
| 21239 | Paleo Oil Company LLC | Corpus Christ, TX 78411 | Oil & Gas Operator | Sep 2026 |
| 21240 | Paleo, Inc. | Oklahoma City, OK 73112 | Oil & Gas Operator | Sep 2026 |
| 21241 | Palisades Asset Holding Co LLC | Dallas, TX 75201 | Oil & Gas Operator | Aug 2017 |
| 21242 | Palisades Operating Company | Midland, TX 79702 | Oil & Gas Operator | Sep 2026 |
| 21243 | Palizay, Paul | Alden, NY 14004 | Gas Operator | Dec 2025 |
| 21244 | Palm Energy Offshore, L.L.C. | | Oil & Gas Operator | Apr 2019 |
| 21245 | Palm Oil & Gas Company | Sedona, AZ 86340 | Oil & Gas Operator | Jul 2026 |
| 21246 | Palm Operating LLC | Oklahoma City, OK 73106-5646 | Oil & Gas Operator | Nov 2019 |
| 21247 | Palmer Engineering, Inc. | Luray, KS 67649 | Gas Operator | Mar 2000 |
| 21248 | Palmer Oil Properties | Post, TX 79356 | Oil & Gas Operator | Sep 2026 |
| 21249 | Palmer Oil, Inc. | Garden City, KS 67846 | Oil & Gas Operator | May 2026 |
| 21250 | Palmer Operating LLC | Megargel, TX 76370 | Oil Operator | Sep 2026 |
| 21251 | Palmer Petroleum, Inc. | Shreveport, LA 71105 | Oil & Gas Operator | Jun 2025 |
| 21252 | Palmer Tank Trucks, Inc. | Olney, TX 76374 | Oil & Gas Operator | Mar 2008 |
| 21253 | Palmer, J. M. | Keller, TX 76244 | Oil & Gas Operator | Aug 2009 |
| 21254 | Palmer, James W. | Wichita Falls, TX 76308 | Oil & Gas Operator | Jul 2002 |
| 21255 | Palmer, John Inc. | Megargel, TX 76370 | Oil & Gas Operator | Feb 1994 |
| 21256 | Palmer, John LLC | Megargel, TX 76370 | Oil & Gas Operator | Sep 2026 |
| 21257 | Palmer, Mike Oil | Megargel, TX 76370 | Oil & Gas Operator | Mar 2021 |
| 21258 | Palmer, Scott Oil | Olney, TX 76374 | Oil Operator | Feb 2023 |
| 21259 | Palmetto Oil Co., Inc. | | Oil & Gas Operator | Jan 2025 |
| 21260 | Palmigo Oil Co. | West Hills, CA 91308 | Oil & Gas Operator | Oct 2017 |
| 21261 | Palo Alto Energy, LLC | | Oil & Gas Operator | Jun 2026 |
| 21262 | Palo Chop Development LLC | | Oil Operator | Aug 2018 |
| 21263 | Palo Cross, LLC | Graham, TX 76450 | Oil & Gas Operator | Sep 2026 |
| 21264 | Palo Duro Resources LLC | Perryton, TX 79070 | Oil & Gas Operator | Sep 2026 |
| 21265 | Palo Petroleum, Inc. | Dallas, TX 75360 | Oil & Gas Operator | Sep 2026 |
| 21266 | Palo Pinto Bond Company, LLC | Graham, TX 76450 | Oil & Gas Operator | Sep 2026 |
| 21267 | Palo Pinto Gas Company | Snyder, TX 79550 | Oil & Gas Operator | Dec 1994 |
| 21268 | Palo Pinto Oil & Gas Corporation | Mineral Wells, TX 76068 | Oil & Gas Operator | Apr 2015 |
| 21269 | Palo Pinto Production, Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | Aug 1998 |
| 21270 | Paloma Blanca Well Service Inc. | Roswell, NM 88202 | Oil & Gas Operator | Jun 2002 |
| 21271 | Paloma Natural Gas, LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
| 21272 | Paloma Operating Co Inc | Houston, TX 77002-5220 | Oil & Gas Operator | Jun 2026 |
| 21273 | Paloma Operating, LLC | Corpus Christ, TX 78401 | Oil & Gas Operator | Sep 2026 |
| 21274 | Paloma Permian Assetco, LLC | Houston, TX 77002 | Oil & Gas Operator | Jun 2026 |
| 21275 | Paloma Resources Inc | Roswell, NM 88201 | Oil & Gas Operator | Dec 1998 |
| 21276 | Paloma Resources, LLC | Houston, TX 77002 | Oil & Gas Operator | Jun 2018 |
| 21277 | Palomino Petrole | | Oil & Gas Operator | Dec 1995 |
| 21278 | Palomino Petroleum | Newton, KS 67114 | Oil Operator | Oct 2003 |
| 21279 | Palomino Petroleum Inc | Newton, KS 67114 | Oil & Gas Operator | May 2026 |
| 21280 | Palrich Oil Corporation | Abilene, TX 79601 | Oil & Gas Operator | Apr 2004 |
| 21281 | Paluca Petroleum Inc. | Holdenville, OK 74848 | Oil & Gas Operator | Jul 2026 |
| 21282 | Paluxy Oil & Gas, LLC | Forney, TX 75126 | Oil & Gas Operator | Sep 2026 |
| 21283 | Paluxy Sands Corporation | Sonora, TX 76950 | Oil & Gas Operator | Jun 2012 |
| 21284 | Pam-Ark Oil Producers | | Oil Operator | Dec 1985 |
| 21285 | Pampa Water Disposal, Inc. | Perryton, TX 79070 | Oil & Gas Operator | Sep 2026 |
| 21286 | Pan American Energy Corporation | | Oil & Gas Operator | Dec 1998 |
| 21287 | Pan American Petroleum Cor | | Oil & Gas Operator | Dec 1981 |
| 21288 | Pan American Petroleum Corp. | | Oil & Gas Operator | Nov 1988 |
| 21289 | Pan American Sales Corporation | Dallas, TX 75202 | Oil & Gas Operator | Mar 2001 |
| 21290 | Pan Energy Company, Inc. | Orchard Park, NY 14127 | Oil & Gas Operator | Dec 2025 |
| 21291 | Pan Petroleum Corp. | Abilene, TX 79608 | Oil & Gas Operator | Mar 2008 |
| 21292 | Pan Petroleum MLP | Kansas City, MO 64114 | Oil & Gas Operator | Aug 1997 |
| 21293 | Pan Resources, Inc. | Borger, TX 79007 | Oil & Gas Operator | Mar 2008 |
| 21294 | Pan Texas Petroleum Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2003 |
| 21295 | Pan Western Energy Corporation | Tulsa, OK 74114 | Oil & Gas Operator | Sep 2026 |
| 21296 | Pan Western Petroleum Co. | | Oil & Gas Operator | Dec 1993 |
| 21297 | Pan-Ok Production Company | | Oil & Gas Operator | Nov 2024 |
| 21298 | Panaco Production Co | Houston, TX 77002 | Oil & Gas Operator | Dec 1999 |
| 21299 | Panaco, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2026 |
| 21300 | Panada Exploration, Inc. | Tulsa, OK 74135 | Oil & Gas Operator | Jun 1996 |