| 201 | Patterson Petroleum LP | Snyder, TX 79550 | Oil & Gas Operator | Mar 2008 |
| 202 | Patterson Petroleum, Inc. | Snyder, TX 79550 | Oil & Gas Operator | Feb 2000 |
| 203 | Patterson, Ben M., Jr. | San Antonio, TX 78216 | Oil & Gas Operator | Mar 2003 |
| 204 | Patton Coleman Exploration Inc. | Abilene, TX 79604 | Oil & Gas Operator | Mar 2025 |
| 205 | Patton Exploration, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Mar 2025 |
| 206 | Patton Oil Corp. | Corpus Chrsti, TX 78466 | Oil & Gas Operator | Aug 2003 |
| 207 | Patton Operating Co. | Kilgore, TX 75663 | Oil & Gas Operator | Nov 1997 |
| 208 | Patton, Donald L & Jerry | Electra, TX 76360 | Oil & Gas Operator | Aug 2007 |
| 209 | Patton, E. N. Oil Company, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Mar 2025 |
| 210 | Patton, Lloyd | Fort Worth, TX 76113 | Oil & Gas Operator | Aug 2003 |
| 211 | Patton, Lloyd J Estate | Fort Worth, TX 76113 | Oil & Gas Operator | Aug 2003 |
| 212 | Pautsky, Jimmy | Wichita Falls, TX 76308 | Oil & Gas Operator | Mar 2025 |
| 213 | Pautsky, Jimmy Estate Of | Wichita Falls, TX 76308 | Oil Operator | Jan 2022 |
| 214 | Pavlas Oil & Gas | Rockdale, TX 76567 | Oil & Gas Operator | Mar 2025 |
| 215 | Pawnee Oil And Gas, Inc. | Richardson, TX 75083 | Oil & Gas Operator | May 2023 |
| 216 | Pax Energy LTD | Elmhurst, IL 60126 | Oil & Gas Operator | Dec 1998 |
| 217 | Pax Petroleum Corporation | La Jolla, CA 92037 | Oil & Gas Operator | Mar 2008 |
| 218 | Payne Petroleum | Abilene, TX 79604 | Oil & Gas Operator | Mar 2025 |
| 219 | Payne Producing Co. | Fredericksbrg, TX 78624 | Oil & Gas Operator | Jun 2008 |
| 220 | Payne, B.R. Oil & Gas, Inc. | Corpus Chrsti, TX 78411 | Oil & Gas Operator | Feb 2006 |
| 221 | Payne, W. C. | Nichols Hill, OK 73116 | Oil & Gas Operator | Sep 2005 |
| 222 | Payne-Johnston | Tyler, TX 75702 | Oil & Gas Operator | Nov 1996 |
| 223 | Payne-Johnston & Byars | Tyler, TX 75702 | Oil & Gas Operator | Jun 1997 |
| 224 | Payola Productions | Athens, TX 75751 | Oil & Gas Operator | Nov 1994 |
| 225 | Payrock II, LLC | Houston, TX 77007 | Oil & Gas Operator | Dec 2020 |
| 226 | Payson Operating, LLC | Argyle, TX 76226 | Oil & Gas Operator | Mar 2018 |
| 227 | PB Oil Company | Vernon, TX 76385 | Oil & Gas Operator | Oct 2023 |
| 228 | Pbex Operations, LLC | Midland, TX 79702 | Oil & Gas Operator | Mar 2025 |
| 229 | Pcore Exploration & Prod II LLC | Golden, CO 80401 | Oil & Gas Operator | Jun 2020 |
| 230 | PD Operating Company | Tulsa, OK 74119 | Oil & Gas Operator | Sep 2005 |
| 231 | PDC Energy | Denver, CO 80203 | Oil & Gas Operator | Nov 2012 |
| 232 | PDC Permian, Inc. | Midland, TX 79706 | Oil & Gas Operator | Mar 2025 |
| 233 | PDC-WV-Co Corporation | Denver, CO 80203 | Oil & Gas Operator | Aug 2010 |
| 234 | Pdeh LLC | Midland, TX 79701 | Oil & Gas Operator | Mar 2025 |
| 235 | PDH Enterprises | Pittsburg, TX 75686 | Oil & Gas Operator | Apr 2019 |
| 236 | Pe - Texas, LLC | Oklahoma City, OK 73113 | Oil Operator | Mar 2025 |
| 237 | Peach Creek Operating Co, LLC | Houston, TX 77007 | Oil & Gas Operator | Mar 2025 |
| 238 | Peak Energy Corporation | Plano, TX 75093 | Oil & Gas Operator | Oct 2018 |
| 239 | Peak Energy Operating #2, LLC | Durango, CO 81301 | Oil & Gas Operator | Jun 2006 |
| 240 | Peak Flow Operating&Drilling LP | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2011 |
| 241 | Peak Natural Gas Co., LLC | Dallas, TX 75225 | Oil & Gas Operator | Sep 2010 |
| 242 | Peak Operating LLC | Oklahoma City, OK 73157 | Oil & Gas Operator | Nov 2024 |
| 243 | Peak Operating Of Texas, LLC | Denver, CO 80202 | Oil & Gas Operator | May 2005 |
| 244 | Peak Pipeline Company | Plano, TX 75093 | Oil & Gas Operator | Oct 2007 |
| 245 | Peak Texas Resources, LLC | Durango, CO 81301 | Oil & Gas Operator | Mar 2017 |
| 246 | Pearce Trust And Blair | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 247 | Pearce, Roy F., Jr. | Midland, TX 79702 | Oil & Gas Operator | Mar 2025 |
| 248 | Pearl Energy, L.L.C. | Austin, TX 78746 | Oil & Gas Operator | Apr 2002 |
| 249 | Pearl Petroleum Inc | Lawton, OK 73501-5821 | Oil & Gas Operator | Jan 2014 |
| 250 | Pearl Resources Operating Co.LLC | Houston, TX 77024 | Oil & Gas Operator | Mar 2025 |
| 251 | Pearl, Bill H. Productions, Inc. | Corpus Chrsti, TX 78460 | Oil & Gas Operator | Mar 2025 |
| 252 | Pearsall Partners | Dallas, TX 75201 | Oil & Gas Operator | Mar 1993 |
| 253 | Pearson, A. K. | Amarillo, TX 79114 | Oil & Gas Operator | Aug 2023 |
| 254 | Pearson, Lee Roy III | Eastland, TX 76448 | Oil & Gas Operator | Mar 2025 |
| 255 | Pearson, Lee Roy, Jr. | Eastland, TX 76448 | Oil & Gas Operator | Nov 1997 |
| 256 | Peba Oil & Gas Co. | Wichita Falls, TX 76302 | Oil & Gas Operator | Jun 2015 |
| 257 | Peba Oil & Gas, Inc. | Nocona, TX 76255 | Oil & Gas Operator | Mar 2025 |
| 258 | Pecanosa Oil & Cattle Co. | New Braunfels, TX 78132 | Gas Operator | May 2013 |
| 259 | Peccary Corporation | Lubbock, TX 79453 | Oil & Gas Operator | Aug 2003 |
| 260 | Pech Oil Co., No. 2 | Midland, TX 79702 | Oil & Gas Operator | Apr 2013 |
| 261 | Pech Oil Company | Midland, TX 79702 | Oil & Gas Operator | Apr 2013 |
| 262 | Peckenpaugh Farms | Farnsworth, TX 79033 | Oil & Gas Operator | Mar 2025 |
| 263 | Pecos Country Operating Inc. | N Richlnd HLS, TX 76182 | Oil Operator | Mar 2025 |
| 264 | Pecos Crude LLC | Sugar Land, TX 77479 | Oil Operator | Mar 2025 |
| 265 | Pecos Development Corporation | San Antonio, TX 78209 | Oil Operator | Aug 1988 |
| 266 | Pecos Operating Company, LLC | Midland, TX 79701 | Oil & Gas Operator | Jun 2021 |
| 267 | Pecos Operators, Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 1993 |
| 268 | Pecos Petroleum Company | Houston, TX 77057 | Oil & Gas Operator | Oct 1999 |
| 269 | Pecos Production Company | Oklahoma City, OK 73154 | Oil & Gas Operator | Apr 2005 |
| 270 | Pecos River Exploration, LLC | Allen, TX 75013 | Oil & Gas Operator | Mar 2025 |
| 271 | Pecos Valley Management Co. | Dallas, TX 75206 | Oil & Gas Operator | Aug 2008 |
| 272 | Ped Oil Corporation | Midland, TX 79702 | Oil & Gas Operator | Mar 2025 |
| 273 | Pedco Resources Company | Tulsa, OK 74170 | Oil & Gas Operator | Mar 2008 |
| 274 | Pedeco, Inc. | Casper, WY 82601 | Oil & Gas Operator | Mar 2008 |
| 275 | Peden Energy | Lubbock, TX 79424 | Oil & Gas Operator | Dec 2004 |
| 276 | Peden Energy, Inc. | Wolfforth, TX 79382 | Oil & Gas Operator | Mar 2025 |
| 277 | Peden, Marshell | Archer City, TX 76351 | Oil & Gas Operator | Mar 2025 |
| 278 | Peden, Oren Inc. | Levelland, TX 79336 | Oil & Gas Operator | May 2001 |
| 279 | Pedernales Petroleum Op, LLC | Houston, TX 77002 | Oil & Gas Operator | Mar 2025 |
| 280 | Pedernales Production, LP | Houston, TX 77057 | Oil & Gas Operator | Mar 2022 |
| 281 | Pedestal Oil Company Inc | Oklahoma City, OK 73101-1522 | Oil & Gas Operator | May 2019 |
| 282 | Peery, J. W. | Midland, TX 79701 | Oil & Gas Operator | Aug 2007 |
| 283 | Pegasi Energy Resources Corp | Tyler, TX 75710 | Oil & Gas Operator | Jul 2007 |
| 284 | Pegasi Operating Inc. | Jefferson, TX 75657 | Oil & Gas Operator | Mar 2025 |
| 285 | Pegasus Energy | Oklahoma City, OK 73162 | Oil & Gas Operator | Apr 1997 |
| 286 | Pegasus Operating, Inc. | Coldspring, TX 77331 | Oil & Gas Operator | Mar 2025 |
| 287 | Pegasus P And A LLC | Kilgore, TX 75663 | Oil Operator | Mar 2025 |
| 288 | Pegasus Petroleum Corporation | Corpus Chrsti, TX 78476 | Oil & Gas Operator | Mar 2025 |
| 289 | Peles, LLC | Houston, TX 77057 | Oil & Gas Operator | Mar 2025 |
| 290 | Pemberton, W. C. Oil Co., Inc. | Cameron, TX 76520 | Oil & Gas Operator | Mar 2025 |
| 291 | Pembrook Oil Company | Big Lake, TX 76932 | Oil & Gas Operator | May 1999 |
| 292 | Pen-Tex Production Co. Inc. | Penwell, TX 79776 | Oil & Gas Operator | Mar 2025 |
| 293 | Pen-Tex Production Co. L.L.C. | Penwell, TX 79776 | Oil & Gas Operator | Nov 1998 |
| 294 | Pendergraft Oil Co. | Lueders, TX 79533 | Oil & Gas Operator | Jan 1998 |
| 295 | Pendolino Resources, LLC | Dallas, TX 75205 | Gas Operator | Mar 2023 |
| 296 | Pendragon Oil Co. | Fort Worth, TX 76116 | Oil & Gas Operator | Mar 2025 |
| 297 | Penergy | Midland, TX 79710 | Oil & Gas Operator | Mar 2025 |
| 298 | Penn Resources, Inc. | Dallas, TX 75219 | Oil & Gas Operator | Sep 1987 |
| 299 | Penn VIrginia Oil & Gas Corp | Houston, TX 77024 | Oil & Gas Operator | Dec 2018 |
| 300 | Penn VIrginia Oil & Gas, L.P. | Houston, TX 77084 | Oil & Gas Operator | Nov 2022 |