| 201 | Hunt Oil Company | Dallas, TX 75201 | Oil & Gas Operator | Dec 2025 |
| 202 | Hunter Oil & Gas Co. | Bangs, TX 76823 | Oil & Gas Operator | Dec 2025 |
| 203 | Huntland Properties, LTD. | Santa Anna, TX 76878 | Oil & Gas Operator | Dec 2025 |
| 204 | Huntwood Resources, LLC | Huntsville, TX 77340 | Oil Operator | Dec 2025 |
| 205 | Interstate Explorations LLC | Houston, TX 77010 | Oil & Gas Operator | Dec 2025 |
| 206 | Ipact | Austin, TX 78734 | Oil & Gas Operator | Dec 2025 |
| 207 | Ira Oil & Gas LLC | Addison, TX 75001 | Oil & Gas Operator | Jul 2008 |
| 208 | J.C. Operating | Breckenridge, TX 76424 | Oil & Gas Operator | Aug 2016 |
| 209 | J.W.S. | Talpa, TX 76882 | Oil & Gas Operator | Dec 2025 |
| 210 | Jap Oil Corporation | Levelland, TX 79336 | Oil & Gas Operator | May 1994 |
| 211 | Jaraco Energy | Cross Plains, TX 76443 | Oil & Gas Operator | Jun 2005 |
| 212 | Jim-Bob Oil Company | San Angelo, TX 76901 | Oil & Gas Operator | Dec 2003 |
| 213 | Jin Petroleum LLC | New Braunfels, TX 78130 | Oil Operator | Dec 2025 |
| 214 | JJB Operating Co. | Mineral Wells, TX 76068 | Oil & Gas Operator | Dec 2025 |
| 215 | JKW Energy Division | Abilene, TX 79608 | Oil & Gas Operator | Aug 2010 |
| 216 | Jones Company, LTD. | Albany, TX 76430 | Oil & Gas Operator | May 1999 |
| 217 | JSK Oilfield Service LLC | Santa Anna, TX 76878 | Oil Operator | Dec 2025 |
| 218 | Jubilee Oil And Gas Corporation | Houston, TX 77024 | Oil & Gas Operator | Nov 2009 |
| 219 | Jubilee Oil Corporation | Denison, TX 75020 | Oil Operator | Oct 2012 |
| 220 | Jurassic Energy Corporation | Crosby, TX 77532 | Oil & Gas Operator | Dec 2025 |
| 221 | Jurassic Operating Company | Houston, TX 77099 | Oil & Gas Operator | Dec 2025 |
| 222 | K & W Vanpelt Company | Portage, OH 43451 | Oil & Gas Operator | Dec 2025 |
| 223 | Kilpatrick Production Company | Tye, TX 79563 | Oil & Gas Operator | Dec 2025 |
| 224 | King Oil & Gas Co. | Cisco, TX 76437 | Oil & Gas Operator | Dec 2025 |
| 225 | KLH Oil & Gas, Inc. | Cross Plains, TX 76443 | Oil & Gas Operator | Dec 2025 |
| 226 | Klingberg, Roger | Cross Plains, TX 76443 | Oil & Gas Operator | Jan 2017 |
| 227 | Kohler Industrial Nat. Gas, Inc. | Kohler, WI 53044 | Gas Operator | Dec 2000 |
| 228 | Kollao Properties LLC | Midland, TX 79702 | Oil & Gas Operator | Dec 2025 |
| 229 | Lariat Land & Exploration, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Dec 2025 |
| 230 | Lawrence Energy Company | Abilene, TX 79602 | Oil & Gas Operator | Dec 2025 |
| 231 | Levisay Operating Co. | Brownwood, TX 76801 | Oil & Gas Operator | Dec 2025 |
| 232 | Littlepage, Tommy | Graham, TX 76450 | Oil & Gas Operator | May 1996 |
| 233 | Live Oak Petroleum, Inc. | Dallas, TX 75251 | Gas Operator | Mar 2001 |
| 234 | Lone Star Production | Lawn, TX 79530 | Oil & Gas Operator | Dec 2025 |
| 235 | Los Hijos De Sanchez J LLC | Beeville, TX 78102 | Oil Operator | Dec 2025 |
| 236 | Low-End Oil LLC | Austin, TX 78748 | Oil Operator | Dec 2025 |
| 237 | LTS Oil & Gas | Lubbock, TX 79424 | Oil & Gas Operator | Dec 2025 |
| 238 | Lumbley, W. F. | Hobbs, NM 88242 | Oil & Gas Operator | Jan 2008 |
| 239 | Lynx Oil Co., Inc. | Denton, TX 76207 | Oil & Gas Operator | Sep 2003 |
| 240 | M. Grace, Inc. | Henderson, TX 75653 | Oil & Gas Operator | Dec 2025 |
| 241 | Marianas Operating Co. | Abilene, TX 79601 | Oil & Gas Operator | Aug 2003 |
| 242 | Martin Well Service Company | Mineral Wells, TX 76067 | Oil & Gas Operator | Jul 2006 |
| 243 | Maverick Prod. Co., Inc. | Houston, TX 77056 | Oil & Gas Operator | Dec 2025 |
| 244 | McBee, Jim Co. | Santa Anna, TX 76878 | Oil & Gas Operator | Mar 2012 |
| 245 | McClymond, LTD. | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2009 |
| 246 | McCullis Resources Co., Inc. | Littleton, CO 80161 | Oil & Gas Operator | Aug 2025 |
| 247 | McIver, Terry L. | Santa Anna, TX 76878 | Oil & Gas Operator | Aug 2003 |
| 248 | Mehaffey Investments, Inc. | Eastland, TX 76448 | Oil & Gas Operator | Dec 2025 |
| 249 | Mer Resources | Edmond, OK 73013 | Oil & Gas Operator | Dec 2025 |
| 250 | Merenco | Midland, TX 79702 | Oil & Gas Operator | Dec 1996 |
| 251 | Mid-Tex Energy Inc. | Costa Mesa, CA 92626 | Oil & Gas Operator | Jan 1999 |
| 252 | Mid-Tex Operating, Inc. | Austin, TX 78748 | Oil & Gas Operator | Dec 2025 |
| 253 | Miles Production Co. | Argyle, TX 76226 | Oil & Gas Operator | Mar 2008 |
| 254 | Miller Operating Company LLC | Lafayette, LA 70598 | Oil & Gas Operator | Dec 2025 |
| 255 | Minuteman Energy, LLC | Georgetown, TX 78633 | Oil & Gas Operator | Feb 2015 |
| 256 | Mission Energy Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 2025 |
| 257 | Mixon, Robert N. | Lometa, TX 76853 | Oil & Gas Operator | Dec 2025 |
| 258 | Mole Hole Prod. | Bridgeport, TX 76426 | Oil Operator | Dec 2025 |
| 259 | Molsdorf Ag LLC | McAllen, TX 78503 | Oil Operator | Sep 2013 |
| 260 | Mondiale Energy, Inc. | Brownwood, TX 76801 | Oil & Gas Operator | Dec 2025 |
| 261 | Moore Investment Co. | Abilene, TX 79604 | Oil & Gas Operator | Dec 2025 |
| 262 | Morris Operating Co | Lovington, NM 88260 | Oil & Gas Operator | Dec 2025 |
| 263 | Muckleroy Gas | San Antonio, TX 78247 | Gas Operator | Dec 2025 |
| 264 | My Hop Mineral | Moorhead, MN 56560 | Oil & Gas Operator | Dec 2025 |
| 265 | N S P Operating Group LLC | El Campo, TX 77437 | Oil & Gas Operator | Aug 2021 |
| 266 | Nabers, Lynn | Austin, TX 78751 | Gas Operator | Jul 2010 |
| 267 | Nance Engineering Inc. | Houston, TX 77058 | Oil & Gas Operator | Mar 2002 |
| 268 | Newton Well Service | New Braunfels, TX 78132 | Oil & Gas Operator | May 2016 |
| 269 | NM&O Operating Company | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2025 |
| 270 | Norman Oil Corporation | Abilene, TX 79608 | Oil & Gas Operator | Mar 2000 |
| 271 | Northcutt Production | Bangs, TX 76823 | Oil & Gas Operator | Dec 2025 |
| 272 | O Hill Enterprises, Inc. | La Grange, TX 78945 | Oil & Gas Operator | Jan 2014 |
| 273 | O'Brien, George H. Jr. | Midland, TX 79701 | Oil & Gas Operator | Jun 1994 |
| 274 | Ogden Resources Corporation | Bryan, TX 77802 | Oil & Gas Operator | Dec 2025 |
| 275 | Ogden Resources, LTD. | Bryan, TX 77802 | Oil & Gas Operator | Feb 2009 |
| 276 | Oil Projects, LLC | Houston, TX 77027 | Oil & Gas Operator | Dec 2025 |
| 277 | Oilwell Operators, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Dec 2025 |
| 278 | One Epoch Energy, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Mar 2008 |
| 279 | Orth Oil Company, Inc. | Cisco, TX 76437 | Oil & Gas Operator | Dec 2025 |
| 280 | Otex LLC | Santa Anna, TX 76878 | Oil & Gas Operator | Dec 2025 |
| 281 | P&P Industries, Inc. | Austin, TX 78737 | Oil & Gas Operator | Dec 2002 |
| 282 | Pactola Development Co | Tulsa, OK 74159 | Oil & Gas Operator | Sep 2004 |
| 283 | Palo Petroleum Inc | Dallas, TX 75360 | Oil & Gas Operator | Dec 2025 |
| 284 | Pan Petroleum Corp. | Abilene, TX 79608 | Oil & Gas Operator | Mar 2008 |
| 285 | Paragon Oil & Gas, LLC | Aledo, TX 76008 | Oil & Gas Operator | Dec 2025 |
| 286 | Pardue Oil | Breckenridge, TX 76424 | Oil & Gas Operator | Sep 2006 |
| 287 | Parker Operating Co., Inc. | Aledo, TX 76008 | Oil & Gas Operator | Sep 2000 |
| 288 | Patriot Operating Company, Inc. | Houston, TX 77008 | Oil & Gas Operator | Sep 2003 |
| 289 | Patterson Energy Corporation | Dallas, TX 75367 | Oil & Gas Operator | Dec 2025 |
| 290 | Patton, Lloyd | Fort Worth, TX 76113 | Oil & Gas Operator | Aug 2003 |
| 291 | Pautsky, Jimmy | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 2025 |
| 292 | Permian Surveys | Midland, TX 79707 | Oil & Gas Operator | Oct 1999 |
| 293 | Petro 2000 Exploration Co. | Katy, TX 77450 | Oil & Gas Operator | Nov 2011 |
| 294 | Petroleum Land Company | Abilene, TX 79606 | Oil & Gas Operator | May 2000 |
| 295 | Petrolia Group, L.L.C. | Katy, TX 77449 | Oil & Gas Operator | Dec 2025 |
| 296 | Petrosource Energy Corporation | Fort Worth, TX 76112 | Oil & Gas Operator | Dec 2025 |
| 297 | Pickett Oil Co. | Gonzales, TX 78629 | Oil & Gas Operator | Oct 2019 |
| 298 | Pillows, Burl A. | Houston, TX 77062 | Oil & Gas Operator | Dec 2025 |
| 299 | Pitcock, Inc. | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 300 | Pitts, Charles Company | Abilene, TX 79604 | Oil & Gas Operator | Dec 1997 |