| 201 | Ipact | Austin, TX 78734 | Oil & Gas Operator | Dec 2024 |
| 202 | Irish Oil & Gas Co. | Houston, TX 77242 | Oil & Gas Operator | Aug 2003 |
| 203 | Iwr Operating, LLC | Dallas, TX 75248 | Oil Operator | Dec 2024 |
| 204 | J-O'B Operating Company | Shreveport, LA 71135 | Oil & Gas Operator | Dec 2024 |
| 205 | Jetta Operating Company Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2024 |
| 206 | Jilpetco, Inc. | Fort Worth, TX 76121 | Oil & Gas Operator | Dec 2024 |
| 207 | JMC Resources Corp. | Houston, TX 77077 | Oil & Gas Operator | Dec 2024 |
| 208 | Josey Oil Company | Houston, TX 77019 | Oil & Gas Operator | Jul 2006 |
| 209 | Josey Oil Company, LTD. | Houston, TX 77019 | Oil & Gas Operator | Dec 2024 |
| 210 | Josey, Lenoir M., Inc. | Houston, TX 77019 | Oil & Gas Operator | Aug 2003 |
| 211 | Joy Resources, Inc. | Houston, TX 77027 | Oil & Gas Operator | Dec 2024 |
| 212 | JTL Operating Co Inc | Katy, TX 77450 | Oil & Gas Operator | Dec 2024 |
| 213 | Jurassic Energy Corporation | Crosby, TX 77532 | Oil & Gas Operator | Dec 2024 |
| 214 | Jurassic Operating Company | Houston, TX 77099 | Oil & Gas Operator | Dec 2024 |
| 215 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | Dec 2024 |
| 216 | Kaler Energy Corp. | Boerne, TX 78006 | Oil & Gas Operator | Dec 2024 |
| 217 | Karenco Energy, Incorporated | Seguin, TX 78155 | Oil & Gas Operator | Oct 1997 |
| 218 | Katsco Energy Inc | Round Rock, TX 78664 | Oil & Gas Operator | Dec 2024 |
| 219 | KCS Resources, Inc. | Houston, TX 77002 | Oil & Gas Operator | May 2010 |
| 220 | Kebo Oil & Gas, Inc. | Portland, TX 78374 | Oil & Gas Operator | Dec 2024 |
| 221 | Kellco Energy, LTD. | Houston, TX 77057 | Oil & Gas Operator | Nov 2007 |
| 222 | Kelton, B.J. | Rosharon, TX 77583 | Oil & Gas Operator | Dec 2024 |
| 223 | Kennedy & Mitchell, Inc. | Houston, TX 77084 | Oil & Gas Operator | Aug 2013 |
| 224 | Kerr-McGee Rocky Mountain Corp | Denver, CO 80202 | Oil & Gas Operator | Jan 2007 |
| 225 | Kingwood Exploration LLC | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2024 |
| 226 | Kovar Operating, LLC | Victoria, TX 77901 | Oil & Gas Operator | Sep 2021 |
| 227 | Kriti Exploration, Inc. | Houston, TX 77002 | Oil & Gas Operator | Oct 2012 |
| 228 | KZ Global Energy, LLC | Houston, TX 77042 | Oil & Gas Operator | Dec 2024 |
| 229 | La Parrita Oil & Gas, Inc. | Rosenberg, TX 77471 | Oil & Gas Operator | May 2002 |
| 230 | Lakehills Production, Inc. | Austin, TX 78701 | Oil & Gas Operator | Dec 2024 |
| 231 | Lamay Corporation | Rosenberg, TX 77471 | Oil & Gas Operator | Dec 2024 |
| 232 | Lavaca River Operating Co., LLC | The Woodlands, TX 77381 | Oil & Gas Operator | Dec 2024 |
| 233 | Legend Natural Gas II, LP | Houston, TX 77094 | Oil & Gas Operator | Feb 2015 |
| 234 | Leonard Brothers Operating Co. | Fort Worth, TX 76101 | Oil & Gas Operator | Dec 2024 |
| 235 | Lewis Operating Company | Holliday, TX 76366 | Oil & Gas Operator | Dec 2024 |
| 236 | LGDC Corporation | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2024 |
| 237 | Lindow Oil & Gas, LLC | Caldwell, TX 77836 | Oil & Gas Operator | Dec 2024 |
| 238 | Live Oak Op & Production, L.L.C. | Austin, TX 78759 | Oil & Gas Operator | Nov 2011 |
| 239 | Lobo Energy, Inc. | Laredo, TX 78044 | Oil & Gas Operator | Nov 1996 |
| 240 | Lobo Operating, Inc. | Houston, TX 77077 | Oil & Gas Operator | Jun 2024 |
| 241 | Lobo Resources, LTD. | Houston, TX 77077 | Oil & Gas Operator | Apr 1994 |
| 242 | Low-End Oil LLC | Austin, TX 78748 | Oil Operator | Dec 2024 |
| 243 | LTS Oil & Gas A | Lubbock, TX 79424 | Oil & Gas Operator | Dec 2024 |
| 244 | LTX Productions, Inc. | Houston, TX 77095 | Oil & Gas Operator | Jul 2008 |
| 245 | Lucas Energy, Inc. | Houston, TX 77067 | Oil & Gas Operator | Feb 2017 |
| 246 | Magnolia Oil & Gas Operating LLC | Houston, TX 77046 | Oil & Gas Operator | Dec 2024 |
| 247 | Magnum Producing, LP | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Dec 2024 |
| 248 | Maguire Oil Company | Dallas, TX 75270 | Oil & Gas Operator | Mar 2015 |
| 249 | Mantle Oil & Gas, LLC | Friendswood, TX 77546 | Oil & Gas Operator | Dec 2024 |
| 250 | Marino, Charles B. | Tomball, TX 77377 | Oil & Gas Operator | Dec 2024 |
| 251 | Marquee Corporation | Houston, TX 77024 | Oil & Gas Operator | Dec 2024 |
| 252 | Marwell Petroleum, Inc. | Houston, TX 77057 | Oil & Gas Operator | Apr 2006 |
| 253 | Mastodon Operating Company, LLC | Houston, TX 77027 | Oil & Gas Operator | Dec 2024 |
| 254 | Maverick Brothers Operating,Inc. | Enid, OK 73702 | Oil & Gas Operator | Dec 2024 |
| 255 | Maverick Prod. Co., Inc. | Houston, TX 77056 | Oil & Gas Operator | Dec 2024 |
| 256 | McCarter, A. Nelson | Houston, TX 77063 | Oil & Gas Operator | Aug 2003 |
| 257 | McCarthy Oil & Gas Corporation | Houston, TX 77056 | Oil & Gas Operator | Oct 2007 |
| 258 | McGowan Working Partners | Jackson, MS 39296 | Oil & Gas Operator | Dec 2000 |
| 259 | McGowan Working Partners, Inc. | Jackson, MS 39296 | Oil & Gas Operator | Dec 2024 |
| 260 | McKenzie Production Company | Houston, TX 77063 | Oil & Gas Operator | May 1995 |
| 261 | McLeod, George L. Inc. | Houston, TX 77079 | Oil & Gas Operator | Sep 2002 |
| 262 | McRae Exploration & Prod., Inc. | Houston, TX 77064 | Oil & Gas Operator | Feb 2017 |
| 263 | Mercantile Oil & Gas Prod. Corp. | Galena Park, TX 77547 | Oil & Gas Operator | Jun 2016 |
| 264 | Merrion Oil & Gas Corp | Farmington, NM 87401 | Oil & Gas Operator | Oct 2024 |
| 265 | Metano Energy, LP | San Antonio, TX 78216 | Oil & Gas Operator | Aug 2008 |
| 266 | Mexco Energy Corporation | Midland, TX 79702 | Oil & Gas Operator | Feb 2020 |
| 267 | Miller, W. C. Operating Company | San Antonio, TX 78209 | Oil & Gas Operator | Dec 2024 |
| 268 | Mitchell Energy Company L.P. | Spring, TX 77387 | Oil & Gas Operator | Mar 2008 |
| 269 | Mitchell Energy Corp | Houston, TX 77002 | Oil & Gas Operator | Aug 2013 |
| 270 | Mobpar, Inc. | Houston, TX 77219 | Oil & Gas Operator | Dec 2024 |
| 271 | Mojac Energy Corp. | Houston, TX 77056 | Oil & Gas Operator | Dec 1997 |
| 272 | MSR Exploration, Inc. | Winters, TX 79567 | Oil & Gas Operator | Mar 2000 |
| 273 | Murchison Oil & Gas Inc | Plano, TX 75024 | Oil & Gas Operator | Mar 2024 |
| 274 | Mustang Energy Inc. | Porter, TX 77365 | Oil & Gas Operator | Mar 2008 |
| 275 | Nance Engineering Inc. | Houston, TX 77058 | Oil & Gas Operator | Mar 2002 |
| 276 | Neostar Energy Co. | Crossville, TN 38572 | Oil & Gas Operator | Feb 2019 |
| 277 | New Century Exploration, Inc. | Spring, TX 77379 | Oil & Gas Operator | Dec 2024 |
| 278 | Newfield Exploration Company | The Woodlands, TX 77380 | Oil & Gas Operator | Jun 2017 |
| 279 | Noble Energy Inc | Midland, TX 79706 | Oil & Gas Operator | Dec 2024 |
| 280 | Nutek Oil Inc | San Antonio, TX 78254 | Oil & Gas Operator | Feb 2006 |
| 281 | Oak Energy, LLC | Houston, TX 77027 | Oil & Gas Operator | Dec 2024 |
| 282 | Oblaen Resources LLC | Wallis, TX 77485 | Oil & Gas Operator | Dec 2024 |
| 283 | Oft Inc. | Houston, TX 77079 | Oil & Gas Operator | Dec 2024 |
| 284 | Og Co., Inc. | Houston, TX 77057 | Oil & Gas Operator | Dec 2024 |
| 285 | Orisol Oil Co. | Houston, TX 77206 | Oil Operator | Jun 2000 |
| 286 | Oro Resources, LLC | Austin, TX 78746 | Oil & Gas Operator | Dec 2024 |
| 287 | Otex Resources LLC | Baytown, TX 77520 | Oil & Gas Operator | Dec 2024 |
| 288 | Ows Energy, Inc. | Montgomery, TX 77356 | Oil & Gas Operator | Dec 2024 |
| 289 | Oxy USA Inc | Houston, TX 77046 | Oil & Gas Operator | Dec 2024 |
| 290 | Par Minerals Corporation | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2024 |
| 291 | Paradis Investments, L.L.C. | Bellaire, TX 77401 | Oil Operator | Jun 2020 |
| 292 | Parker & Parsley Development Co. | Midland, TX 79702 | Oil & Gas Operator | May 1995 |
| 293 | Parker & Parsley Development L.P | Midland, TX 79702 | Oil & Gas Operator | Oct 2007 |
| 294 | Partners Oil Company | Tulsa, OK 74135 | Oil & Gas Operator | Aug 1995 |
| 295 | Patriot Operating Company, Inc. | Houston, TX 77008 | Oil & Gas Operator | Sep 2003 |
| 296 | Patterson Petroleum LLC | Snyder, TX 79550 | Oil & Gas Operator | Oct 2007 |
| 297 | Patterson Petroleum LP | Snyder, TX 79550 | Oil & Gas Operator | Mar 2008 |
| 298 | Patterson Petroleum, Inc. | Snyder, TX 79550 | Oil & Gas Operator | Feb 2000 |
| 299 | Pecos Petroleum Company | Houston, TX 77057 | Oil & Gas Operator | Oct 1999 |
| 300 | Pegasus Operating, Inc. | Coldspring, TX 77331 | Oil & Gas Operator | Dec 2024 |