| 101 | Petrie Enterpris | | Oil & Gas Operator | Sep 1986 |
| 102 | Petrie, Stanley D. | Pratt, KS 67124 | Gas Operator | Aug 1995 |
| 103 | Petrik Oil | Bartlesville, OK 74006 | Oil Operator | Nov 1996 |
| 104 | Petrik Oil - Jim | | Oil Operator | Apr 1995 |
| 105 | Petro 85 Incorpo | | Oil Operator | Mar 1993 |
| 106 | Petro Dynamics C | | Oil & Gas Operator | Sep 1988 |
| 107 | Petro Energies I | | Oil & Gas Operator | Apr 1991 |
| 108 | Petro Locators I | | Oil & Gas Operator | Dec 1995 |
| 109 | Petro Locators, Inc. | Pratt, KS 67124 | Oil & Gas Operator | Jun 2025 |
| 110 | Petro Oil Produc | | Oil Operator | Aug 1989 |
| 111 | Petro Pak Corpor | | Oil Operator | Aug 1988 |
| 112 | Petro River Operating, LLC | New York City, NY 10017 | Oil & Gas Operator | Jul 2011 |
| 113 | Petro Valley Ser | | Gas Operator | Dec 1986 |
| 114 | Petro-Haley | Borger, TX 79008 | Oil & Gas Operator | Dec 2025 |
| 115 | Petro-Lewis Corp. | | Oil & Gas Operator | Feb 1994 |
| 116 | Petro-Technology | | Oil & Gas Operator | Aug 1991 |
| 117 | Petro-Technology, Inc. | Topeka, KS 66604 | Gas Operator | Dec 1997 |
| 118 | Petrocorp | | Oil & Gas Operator | Nov 1992 |
| 119 | Petrocorp Incorporated | Tulsa, OK 74170 | Oil & Gas Operator | Nov 2021 |
| 120 | Petrodome Operating, LLC | Houston, TX 77265 | Oil & Gas Operator | Jun 2025 |
| 121 | Petroglyph Operating Co | Boise, ID 83709 | Oil & Gas Operator | Jul 2017 |
| 122 | Petrohawk Operating Company | Houston, TX 77056 | Oil & Gas Operator | Oct 2021 |
| 123 | Petrol Oil & Gas, Inc. | Overland Park, KS 66210 | Oil & Gas Operator | Dec 2008 |
| 124 | Petroleum Corpor | | Oil Operator | Jan 1983 |
| 125 | Petroleum Develo | | Oil Operator | Sep 1986 |
| 126 | Petroleum Development Company | Tulsa, OK 74103 | Oil & Gas Operator | Aug 2025 |
| 127 | Petroleum Energy | | Oil & Gas Operator | Mar 1991 |
| 128 | Petroleum Energy, Inc. | Wichita, KS 67202 | Oil Operator | May 1999 |
| 129 | Petroleum Enterp | | Oil & Gas Operator | Sep 1995 |
| 130 | Petroleum Enterprises, Inc. | Hutchinson, KS 67504 | Oil & Gas Operator | May 2001 |
| 131 | Petroleum Explor | | Oil Operator | Aug 1983 |
| 132 | Petroleum Inc | Wichita, KS 67202 | Oil & Gas Operator | Oct 2021 |
| 133 | Petroleum Incorp | | Oil & Gas Operator | Apr 1993 |
| 134 | Petroleum Manage | | Oil & Gas Operator | Oct 1994 |
| 135 | Petroleum Management, Inc. | Corpus Chrsti, TX 78471 | Oil & Gas Operator | Dec 2025 |
| 136 | Petroleum Prod. MGMT | | Oil Operator | Nov 1995 |
| 137 | Petroleum Produc | | Oil & Gas Operator | Dec 1996 |
| 138 | Petroleum Production Corporation | Rantoul, KS 66079 | Oil Operator | Feb 2024 |
| 139 | Petroleum Production Management Inc | Shawnee Mission, KS 66202 | Oil & Gas Operator | Nov 2021 |
| 140 | Petroleum Proper | | Oil & Gas Operator | Nov 1995 |
| 141 | Petroleum Property Services, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Jun 2025 |
| 142 | Petroleum Techno | | Oil & Gas Operator | Dec 1996 |
| 143 | Petroleum Technologies, Inc. | Kansas City, MO 64112 | Oil & Gas Operator | Jun 2025 |
| 144 | Petron Oil & Gas | Lenexa, KS 66215 | Oil & Gas Operator | Jun 2025 |
| 145 | Petropro Petroleum LLC | | Oil Operator | Jun 2025 |
| 146 | Petrosantander (USA) Inc. | Houston, TX 77057 | Oil & Gas Operator | Jun 2025 |
| 147 | Petroventures In | | Oil Operator | Apr 1987 |
| 148 | Petx Petroleum C | | Oil Operator | Nov 1993 |
| 149 | Pfeifer Explorations, LLC | Hays, KS 67601 | Oil Operator | Jun 2025 |
| 150 | Pfrang, Derek | Wetmore, KS 66550 | Oil Operator | Jul 2022 |
| 151 | Pharyn Resources, LLC | Lenexa, KS 66219 | Oil Operator | Jun 2009 |
| 152 | Phil Groves Oil | | Oil & Gas Operator | May 2025 |
| 153 | Phillips Explora | | Oil & Gas Operator | Dec 1996 |
| 154 | Phillips Exploration Company L.C. | Andover, KS 67002 | Oil & Gas Operator | Jun 2025 |
| 155 | Phillips J L Oil | | Oil Operator | Dec 1992 |
| 156 | Phillips Lee Oil | | Oil & Gas Operator | Aug 1995 |
| 157 | Phillips Oil Company, LLC | Wichita, KS 67211 | Oil Operator | Jun 2025 |
| 158 | Phillips Oil Properties Inc. | Derby, KS 67037 | Oil Operator | Jun 2025 |
| 159 | Phillips Petrole | | Oil & Gas Operator | May 1995 |
| 160 | Phillips Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Mar 2013 |
| 161 | Phillips William | | Oil Operator | Jul 1989 |
| 162 | Philpott Oil & Gas Co Inc | Atwood, KS 67730 | Oil Operator | Aug 2010 |
| 163 | Phoenix Kansas Energy, LLC | Chanute, KS 66720 | Oil Operator | Aug 2003 |
| 164 | Phoenix Oil Comp | | Oil Operator | Nov 1988 |
| 165 | Phoenix Oil Corp | Wichita, KS 67201 | Oil & Gas Operator | Jan 1999 |
| 166 | Pic Inc | Ponca City, OK 74602 | Oil & Gas Operator | Jan 2013 |
| 167 | Pickett Brothers | | Oil Operator | Dec 1995 |
| 168 | Pickrell Drilling Co., Inc. | Wichita, KS 67213 | Oil & Gas Operator | Jun 2025 |
| 169 | Pieratt, Ralph | Burlington, KS 66839 | Oil Operator | Aug 1987 |
| 170 | Pike Oil & Gas Inc | Pittsfield, IL 62363 | Oil & Gas Operator | Oct 2020 |
| 171 | Piland Resources | | Oil & Gas Operator | Mar 2022 |
| 172 | Pintail Petroleu | | Oil & Gas Operator | Dec 1995 |
| 173 | Pintail Petroleum, LTD. | Wichita, KS 67202 | Oil & Gas Operator | Apr 2021 |
| 174 | Pinto Petroleum | Wichita, KS 67211 | Oil Operator | Nov 2001 |
| 175 | Pioneer Exploration Company | Houston, TX 77090 | Oil & Gas Operator | Sep 2025 |
| 176 | Pioneer Exploration, LLC | Houston, TX 77090 | Oil & Gas Operator | Oct 2025 |
| 177 | Pioneer Feedyard, LLC | Oakley, KS 67748 | Oil Operator | Jun 2025 |
| 178 | Pioneer Natural Resources USA Inc | Irving, TX 75039 | Oil & Gas Operator | Jun 2025 |
| 179 | Pioneer Oil Company, Inc. | Vincennes, IN 47501 | Oil & Gas Operator | Jun 2025 |
| 180 | Pioneer Operatio | | Oil & Gas Operator | Mar 1986 |
| 181 | Pioneer Operations, LLC | Hays, KS 67601 | Oil Operator | Jun 2025 |
| 182 | Pioneer Resources | Jefferson, CO 80456 | Oil Operator | Dec 2009 |
| 183 | Pioneer Resources Inc | Phillipsburg, KS 67661 | Oil & Gas Operator | Oct 2020 |
| 184 | Pipeline Oil & Gas, LLC | Phoenix, AZ 85016 | Oil Operator | Feb 2014 |
| 185 | Piqua Petro, Inc. | Piqua, KS 66761 | Oil Operator | Jun 2025 |
| 186 | Piqua Petroleum | | Oil Operator | Dec 1996 |
| 187 | Pitman Creek, Inc. | Burlington, IA 52601 | Oil Operator | Dec 1992 |
| 188 | Pitman John | | Oil & Gas Operator | Jan 1992 |
| 189 | Pitman, John Douglas Revocable Trust | Oklahoma City, OK 73118 | Oil Operator | Dec 2019 |
| 190 | Pitman, John Estate (Deceased) | Oklahoma City, OK 73104 | Oil Operator | May 2000 |
| 191 | Pittman Kenneth | | Oil Operator | Mar 1995 |
| 192 | Place, Steve | El Dorado, KS 67042 | Oil Operator | Dec 2019 |
| 193 | Plains Marketing, LP | Cushing, OK 74023 | Oil Operator | Jan 2012 |
| 194 | Plains Oil & Gas | Cushing, OK 74023-4819 | Oil & Gas Operator | Jan 2019 |
| 195 | Plains Oil Compa | | Oil & Gas Operator | Aug 1988 |
| 196 | Plains Petroleum | | Gas Operator | Dec 1996 |
| 197 | Plains Petroleum Operating Co | Denver, CO 80202 | Oil & Gas Operator | Dec 2014 |
| 198 | Plains Resources Inc. | Houston, TX 77002 | Oil & Gas Operator | Jul 2008 |
| 199 | Plano Petroleum | | Oil & Gas Operator | Dec 1994 |
| 200 | Plano Petroleum Corporation | McKinney, TX 75070 | Oil & Gas Operator | Jun 2025 |