| 201 | Oxbow EP LLC | | Oil Operator | Dec 2024 |
| 202 | Palmetto Oil Co., Inc. | | Oil & Gas Operator | Jan 2025 |
| 203 | Par Minerals Corporation | Shreveport, LA 71101 | Oil & Gas Operator | Mar 2025 |
| 204 | Par-Naylor | | Oil Operator | Mar 1985 |
| 205 | Paradigm Energy LLC | Lenexa, KS 66227 | Oil & Gas Operator | Dec 2024 |
| 206 | Paul Guido | | Oil Operator | Oct 1998 |
| 207 | Paul J. Ross | | Oil Operator | Dec 1986 |
| 208 | Pennzenergy Explor & Prod LLC | | Oil & Gas Operator | Dec 1999 |
| 209 | Pennzoil Exploration & Production Co. | Carthage, TX 75633 | Oil & Gas Operator | Mar 2008 |
| 210 | Pennzoil Petroleum Company | Houston, TX 77252 | Oil & Gas Operator | Nov 1999 |
| 211 | Petro Vest, Inc. | Houston, TX 77046 | Oil & Gas Operator | Sep 2014 |
| 212 | Petro-Chem Operating Company, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Mar 2025 |
| 213 | Petroleum Exchange | | Oil & Gas Operator | Oct 1997 |
| 214 | PF Operating Company | Wichita Falls, TX 76302 | Oil & Gas Operator | Aug 2003 |
| 215 | Phoenix Energy, Inc. | Oilmont, MT 59466 | Oil & Gas Operator | Jan 2025 |
| 216 | Pilot Resources, Inc. | | Oil & Gas Operator | May 2013 |
| 217 | Pinnacle Operating Company, Inc. | Shreveport, LA 71135 | Oil & Gas Operator | Mar 2025 |
| 218 | Pruet & Hughes Co. | | Oil & Gas Operator | Jan 1978 |
| 219 | Pruet Production Co. | Jackson, MS 39201 | Oil & Gas Operator | Dec 2024 |
| 220 | Quest Energies | | Oil & Gas Operator | Mar 1997 |
| 221 | Quest Energies Group,LTD. | Shreveport, LA 71106 | Oil & Gas Operator | Mar 1997 |
| 222 | R & H Oil & Gas, Inc. | | Oil & Gas Operator | Apr 1992 |
| 223 | R A Nobile | | Oil & Gas Operator | Nov 1989 |
| 224 | R. A. Campbell Company | | Oil & Gas Operator | Nov 1995 |
| 225 | R.A. Campbell & Dale Expl | | Oil Operator | Nov 1995 |
| 226 | Rabb Contracting Company, L.L.C. | | Oil Operator | Nov 2024 |
| 227 | Rabb Resources, Limited | | Oil Operator | Dec 2002 |
| 228 | Radiant Oil & Gas Operating Company, Inc. | | Oil & Gas Operator | Aug 2015 |
| 229 | Radzewicz Operating Corp. | | Oil & Gas Operator | Oct 2017 |
| 230 | Ricks & Ricks Oil Producers | | Oil Operator | Sep 1983 |
| 231 | Risher Company, Inc. | | Oil & Gas Operator | Jul 2001 |
| 232 | Robertson Energy, LLC | | Oil & Gas Operator | Dec 2024 |
| 233 | Romaxsco Exploration Co., Inc. | | Oil & Gas Operator | Aug 1993 |
| 234 | Roms Co., Inc. | | Oil Operator | Jun 1983 |
| 235 | Ron Knott & Associates,Inc. | | Oil & Gas Operator | Aug 1989 |
| 236 | Ross Exploration,Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | Jul 2013 |
| 237 | Ross Prod. - Zwahlen & Raish | | Oil & Gas Operator | Sep 1998 |
| 238 | Ryca Energy Partners LLC | | Oil Operator | Nov 2024 |
| 239 | S S M Partnership | | Oil & Gas Operator | Jul 1992 |
| 240 | Sam Spears, Jr. | | Oil & Gas Operator | Sep 1998 |
| 241 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Dec 2024 |
| 242 | Sanchez Oil & Gas Corporation | Houston, TX 77056 | Oil & Gas Operator | Mar 2025 |
| 243 | Savant Energy Corporation | | Oil & Gas Operator | Mar 2012 |
| 244 | Saye Petroleum, Inc. | | Oil & Gas Operator | Apr 1995 |
| 245 | Seagull Mid-South Inc | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 246 | Seagull Operating Co., Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Jan 2025 |
| 247 | Secan Oil Co., Inc. | | Oil & Gas Operator | May 1987 |
| 248 | Sedona Oil & Gas Corporation | Austin, TX 78746 | Oil & Gas Operator | Mar 2025 |
| 249 | Serio Energy Corp. | | Oil & Gas Operator | Jul 2000 |
| 250 | Sklar & Phillips - Harry Hurt | | Oil & Gas Operator | Jul 1986 |
| 251 | Sklar & Phillips Oil Co. | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2000 |
| 252 | Smal Energy Corp | Tyler, TX 75710 | Oil & Gas Operator | Oct 1995 |
| 253 | Smith Operating And MGMT Co. | Shreveport, LA 71161 | Oil & Gas Operator | Jun 2023 |
| 254 | Smith-Wentworth | | Oil & Gas Operator | Sep 1983 |
| 255 | Smith-Wentworth & Coquina | | Oil Operator | Jun 1983 |
| 256 | Smith-Wentworth & Hughes & New | | Oil Operator | Jun 1983 |
| 257 | Sola Operating, LLC | Trout, LA 71371 | Oil Operator | Mar 2025 |
| 258 | Sooner Corporation | | Oil & Gas Operator | Oct 1990 |
| 259 | Southwest Operating Inc. | | Oil & Gas Operator | Dec 2024 |
| 260 | Spokane Operating, LLC | | Oil & Gas Operator | Dec 2024 |
| 261 | SWD Acidizing, Inc. | | Oil Operator | Feb 2014 |
| 262 | T & F Oil Company, LLC | | Oil Operator | Oct 2011 |
| 263 | T, F & B Oil Company, LLC | | Oil Operator | Jan 2013 |
| 264 | T. J. Guido | | Oil & Gas Operator | Oct 1998 |
| 265 | T. M. Hopkins | | Oil & Gas Operator | Aug 2007 |
| 266 | T. O. Kimbrell, LLC | | Oil & Gas Operator | Jan 2025 |
| 267 | T. West Bullock, SR. | | Oil & Gas Operator | Mar 1989 |
| 268 | Taurus Exploration U.S.A., Inc. | Midland, TX 79705 | Oil & Gas Operator | Nov 1998 |
| 269 | Tensas Delta Land Company | | Oil & Gas Operator | Apr 2002 |
| 270 | Tideway Oil Programs, Inc. | | Oil & Gas Operator | Oct 1980 |
| 271 | Titan Oil Corp. | | Oil & Gas Operator | Jan 2025 |
| 272 | Tredegar Properties, Inc. | | Oil Operator | Jun 1990 |
| 273 | Trendsetter Production Co | | Oil & Gas Operator | Jul 2008 |
| 274 | Triangle Oil & G G Cornwell | | Oil & Gas Operator | Nov 1981 |
| 275 | Triangle Oil Producers, Inc. | | Oil & Gas Operator | Jun 1998 |
| 276 | Trich Production, Inc. | Longview, TX 75606 | Oil & Gas Operator | Jan 2025 |
| 277 | Tyler Production, LLC | | Oil & Gas Operator | Jul 2013 |
| 278 | Vega Oil & Gas MGMT., Inc. | | Oil & Gas Operator | Aug 1981 |
| 279 | Verona Energy, Inc. | | Oil & Gas Operator | Nov 2024 |
| 280 | Vintage Petroleum, Inc. | Houston, TX 77046 | Oil & Gas Operator | Dec 2024 |
| 281 | Vista Corporation | | Oil & Gas Operator | Jan 2011 |
| 282 | W. R. Jennings, Jr. | | Oil Operator | Aug 2003 |
| 283 | Wainoco Oil & Gas Company | Houston, TX 77024 | Oil & Gas Operator | Dec 2005 |
| 284 | Waller Brothers, Inc. | | Oil & Gas Operator | Jul 2004 |
| 285 | Walter W. Heard, Jr. | | Oil & Gas Operator | Dec 1995 |
| 286 | Watchtower Petroleum LLC | | Oil & Gas Operator | Dec 2024 |
| 287 | Weiser-Brown Operating Company | Magnolia, AR 71754 | Oil & Gas Operator | Mar 2025 |
| 288 | Wenert Trich | | Oil & Gas Operator | Oct 1988 |
| 289 | Wheeler Oil Company | Sperry, OK 74073-9417 | Oil & Gas Operator | Nov 2024 |
| 290 | White River Operating LLC | Gilmer, TX 75644 | Oil & Gas Operator | Dec 2024 |
| 291 | Whitton Company, Inc. | | Oil & Gas Operator | Jul 2020 |
| 292 | Wilcox Energy Company | | Oil & Gas Operator | Dec 2024 |
| 293 | Wilcox Operating Corporation | Shreveport, LA 71115 | Oil & Gas Operator | Mar 2025 |
| 294 | Wildcat Well Services, LTD. | | Oil Operator | Oct 1989 |