| 101 | Patterson John H | Shawnee, OK 74801 | Oil Operator | Dec 2006 |
| 102 | Patterson Oil Company, The | Eastland, TX 76448 | Oil & Gas Operator | Jun 2026 |
| 103 | Patterson Russell B | Wewoka, OK 74884-1262 | Oil & Gas Operator | Feb 2020 |
| 104 | Patton Dale | Stillwater, OK 74074 | Oil & Gas Operator | Dec 2011 |
| 105 | Patton Oil Company | Midland, TX 79702 | Oil & Gas Operator | Jun 2007 |
| 106 | Paul Burton LLC | Ardmore, OK 73401 | Oil & Gas Operator | Jul 2026 |
| 107 | Paul Gillham Oil Company | Maud, OK 74854 | Oil & Gas Operator | Jun 2026 |
| 108 | Pauls Valley Disposal LLC | Kingston, OK 73439-2130 | Oil Operator | Mar 2015 |
| 109 | Pawnee Oil And Gas, Inc. | Richardson, TX 75083 | Oil & Gas Operator | May 2023 |
| 110 | Pawnee Petroleum Company | Seminole, OK 74868-0951 | Oil & Gas Operator | Feb 2023 |
| 111 | Pax Energy LLC | Oklahoma City, OK 73112-7371 | Oil Operator | Sep 2021 |
| 112 | Payne Charlie D | Lawton, OK 73505 | Oil & Gas Operator | May 2001 |
| 113 | Payne Exploration Company | Crescent, OK 73028 | Oil & Gas Operator | Jun 2026 |
| 114 | Payne W C Family Trust | Oklahoma City, OK 73116-9044 | Oil & Gas Operator | Mar 2015 |
| 115 | Payne, Frank O | | Oil Operator | Aug 1999 |
| 116 | Payneco Pipeline Company | Yale, OK 74085 | Oil & Gas Operator | Dec 2000 |
| 117 | Payrock Energy LLC | Oklahoma City, OK 73134-2612 | Oil & Gas Operator | Feb 2023 |
| 118 | Paystone Oil Corporation | Tulsa, OK 74105 | Oil Operator | Mar 2009 |
| 119 | PBT Enterprises Inc | Garber, OK 73738 | Oil & Gas Operator | Jun 2023 |
| 120 | PCL Energy LLC | Seminole, OK 74868 | Oil & Gas Operator | Jun 2026 |
| 121 | PDG Production LLC | Stroud, OK 74079 | Oil & Gas Operator | Jul 2026 |
| 122 | Pe - Osage, LLC | | Oil Operator | Jun 2026 |
| 123 | Peachridge Energy Operating LLC | Oklahoma City, OK 73159 | Oil & Gas Operator | Jul 2026 |
| 124 | Peak Operating Oil & Gas LLC | Wichita, KS 67226 | Oil & Gas Operator | Jun 2026 |
| 125 | Pearl Oil Company | Nichols Hills, OK 73120-1408 | Oil & Gas Operator | Nov 2023 |
| 126 | Pearl Petroleum Inc | Lawton, OK 73501-5821 | Oil & Gas Operator | Jan 2014 |
| 127 | Pearsall Jarrett | Delaware, OK 74027-1065 | Oil Operator | Jun 2026 |
| 128 | Pease George W Jr | Fairfax, OK 74637 | Oil & Gas Operator | Mar 1998 |
| 129 | Pedco Inc | | Oil & Gas Operator | Nov 1997 |
| 130 | Pedestal Oil Company Inc | Oklahoma City, OK 73101-1522 | Oil & Gas Operator | May 2019 |
| 131 | Pedocs Inc | Bixby, OK 74008 | Oil & Gas Operator | Mar 2026 |
| 132 | Pegasus Energy Corporation | Oklahoma City, OK 73162 | Oil & Gas Operator | Mar 2015 |
| 133 | Pegg Oil LLC | Allen, OK 74825-4900 | Oil Operator | Aug 2022 |
| 134 | Pelican Dome Exploration Inc | Harahan, LA 70123 | Oil & Gas Operator | Aug 2000 |
| 135 | Pelican Production Company | New Orleans, LA 70130-2477 | Oil & Gas Operator | Mar 2014 |
| 136 | Pelto Oil Company | Houston, TX 77002 | Oil & Gas Operator | Nov 1998 |
| 137 | Pemco LLC | Skiatook, OK 74070 | Oil Operator | Jun 2026 |
| 138 | Pemex Inc | Dallas, TX 75367-0249 | Oil & Gas Operator | Nov 2015 |
| 139 | Penequine Ranch | | Gas Operator | Sep 2019 |
| 140 | Pengo Petroleum Inc | | Oil & Gas Operator | Dec 2013 |
| 141 | Penn Homa Oil & Gas Co | Edmond, OK 73083 | Oil & Gas Operator | Oct 2013 |
| 142 | Penn Production Company Inc | | Oil & Gas Operator | Nov 2014 |
| 143 | Penn VIrginia MC Operating Co LLC | Houston, TX 77084-7213 | Oil & Gas Operator | Sep 2025 |
| 144 | Penn VIrginia Oil & Gas Corp | Houston, TX 77024 | Oil & Gas Operator | Dec 2023 |
| 145 | Pennant Energy LLC | Oklahoma City, OK 73116 | Oil Operator | Dec 2024 |
| 146 | Pennant Oil & Gas LLC | Oklahma City, OK 73159-6905 | Oil & Gas Operator | Jan 2024 |
| 147 | Penner Energy Inc | Oklahoma City, OK 73120-1930 | Oil & Gas Operator | Jul 2026 |
| 148 | Pennmark Resources Company | Edmond, OK 73013 | Oil & Gas Operator | Jun 2026 |
| 149 | Penntex Resources, L.P. | State College, PA 16803 | Oil & Gas Operator | Mar 2016 |
| 150 | Pennzoil Company | Midland, TX 79710-0090 | Oil & Gas Operator | Mar 2000 |
| 151 | Pennzoil Explor & Prod Co | Houston, TX 77002 | Oil & Gas Operator | Mar 2000 |
| 152 | Pennzoil Petroleum Company | Houston, TX 77252 | Oil & Gas Operator | Nov 1999 |
| 153 | Peoples Bank & Trust Company | McPherson, KS 67460 | Oil Operator | Jan 2013 |
| 154 | Pepin Oil Co | Stillwater, OK 74076 | Oil & Gas Operator | Oct 2013 |
| 155 | Pepin Operating Company Inc | Stillwater, OK 74075-9535 | Oil & Gas Operator | May 2009 |
| 156 | Peregrine Petroleum Corp | Oklahoma City, OK 73116-7639 | Oil & Gas Operator | May 2020 |
| 157 | Performance Energy Partners LLC | Barnsdall, OK 74002-0628 | Oil & Gas Operator | Sep 2025 |
| 158 | Performance Operating Company LLC | Barnsdall, OK 74002 | Oil & Gas Operator | Jun 2026 |
| 159 | Performance Petroleum Company LLC | Barnsdall, OK 74002 | Oil & Gas Operator | Jun 2026 |
| 160 | Perkins Energy Company | Duncan, OK 73533-3853 | Oil & Gas Operator | Jul 2026 |
| 161 | Perkins Mike | Velma, OK 73091 | Oil & Gas Operator | Jan 2006 |
| 162 | Perkins Nova | Atwood, OK 74827-9738 | Oil Operator | Feb 2014 |
| 163 | Perkins, Bobby R | | Oil Operator | Mar 2017 |
| 164 | Perkins, Earl | | Oil & Gas Operator | Aug 2013 |
| 165 | Permian Roustabout & Oilfield Services LLC | Blanchard, OK 73010 | Oil & Gas Operator | Feb 2024 |
| 166 | Permian West Corp. | Odessa, TX 79762 | Oil & Gas Operator | Sep 2026 |
| 167 | Perrin, Mary L | | Oil & Gas Operator | Oct 2005 |
| 168 | Perry L Larson Operating Co | Dallas, TX 75231-4712 | Oil & Gas Operator | Jun 2026 |
| 169 | Perry Production Company Inc | Perry, OK 73077-0412 | Oil & Gas Operator | May 2006 |
| 170 | Pet-Ex Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2026 |
| 171 | Petco Petroleum Corp | Hinsdale, IL 60521 | Oil & Gas Operator | Jun 2026 |
| 172 | Petra Petroleum Inc | Littleton, CO 80160-0319 | Oil & Gas Operator | Jun 2005 |
| 173 | Petra Petroleum Management LLC | Hotchkiss, CO 81419-0369 | Gas Operator | Sep 2014 |
| 174 | Petro Davis Inc | Oklahoma City, OK 73142-1807 | Oil & Gas Operator | Jan 2013 |
| 175 | Petro Energy Inc | Farmington, NM 87499 | Oil & Gas Operator | Sep 2025 |
| 176 | Petro Oilfield Equipment Inc | Drumright, OK 74030-1233 | Oil & Gas Operator | Dec 2010 |
| 177 | Petro Speed Inc | Norman, OK 73069-8116 | Oil & Gas Operator | Mar 2015 |
| 178 | Petro Warrior LLC | Wichita, KS 67206 | Oil & Gas Operator | Jul 2026 |
| 179 | Petro-Guard Company, Inc. | Houston, TX 77057 | Oil & Gas Operator | Nov 2014 |
| 180 | Petro-Haley | Borger, TX 79008 | Oil & Gas Operator | Sep 2026 |
| 181 | Petro-Hunt Corporation | Dallas, TX 75201 | Oil & Gas Operator | Jun 2003 |
| 182 | Petro-Lewis Corp. | | Oil & Gas Operator | Feb 1994 |
| 183 | Petro-Mac Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2026 |
| 184 | Petro-Management Assoc., Inc. | Edmond, OK 73083-2346 | Oil & Gas Operator | Jun 2007 |
| 185 | Petro-Met Energy LLC | Edmond, OK 73034-1237 | Oil Operator | Jun 2026 |
| 186 | Petro-X Corporation | Houston, TX 77092 | Oil & Gas Operator | Jul 2002 |
| 187 | Petrocorp Incorporated | Tulsa, OK 74170 | Oil & Gas Operator | Nov 2021 |
| 188 | Petroda Oil & Gas LLC | Edmond, OK 73054 | Oil & Gas Operator | Feb 2023 |
| 189 | Petroflow Energy Corporation | Tulsa, OK 74119-5405 | Oil & Gas Operator | Oct 2016 |
| 190 | Petrogas Exploration Inc | | Oil Operator | Apr 2026 |
| 191 | Petroglyph Operating Co | Boise, ID 83709 | Oil & Gas Operator | Jul 2017 |
| 192 | Petrogulf Corporation | Denver, CO 80202 | Oil & Gas Operator | Sep 2026 |
| 193 | Petrohawk Operating Company | Houston, TX 77056 | Oil & Gas Operator | Oct 2021 |
| 194 | Petrojen Production Company Inc | Bakersfield, CA 93311 | Oil Operator | Jul 2026 |
| 195 | Petrolanic Inc | Tulsa, OK 74105 | Oil Operator | Oct 1991 |
| 196 | Petroleum Capital, L.C. | Dallas, TX 75367 | Oil & Gas Operator | Sep 2026 |
| 197 | Petroleum Corporation Of Texas | Breckenridge, TX 76024 | Oil & Gas Operator | May 2002 |
| 198 | Petroleum Development Company | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2026 |
| 199 | Petroleum Explo Prod Inc | Oilton, OK 74052 | Oil & Gas Operator | Jan 2017 |
| 200 | Petroleum Exploration Company LTD LP | Breckenridge, TX 76424 | Oil & Gas Operator | Jul 2026 |