| 6201 | L-Texx Petroleum, LP | Arlington, TX 76013 | Oil & Gas Operator | Dec 2025 |
| 6202 | L. S. K. L. Oil Co. | Buda, TX 78610 | Oil & Gas Operator | Dec 2025 |
| 6203 | L.C.S. Production Company | Abilene, TX 79608 | Oil & Gas Operator | Dec 2025 |
| 6204 | L.J. Resources, LLC | Graham, TX 76450 | Gas Operator | Dec 2025 |
| 6205 | L.J.M. Corporation | Houston, TX 77025 | Oil & Gas Operator | Jun 2012 |
| 6206 | L.L. Oil Company | Freer, TX 78357 | Oil & Gas Operator | Dec 2025 |
| 6207 | L.O.G. Energy Exploration, LTD. | Laredo, TX 78041 | Oil & Gas Operator | Dec 2025 |
| 6208 | L.T.D. Explorations Inc. | Alice, TX 78333 | Oil & Gas Operator | Dec 2025 |
| 6209 | L2SG Production, LLC | Nocona, TX 76255 | Oil Operator | May 2020 |
| 6210 | L7 Energy LLC | Wichita Falls, TX 76308 | Oil Operator | Dec 2025 |
| 6211 | La Aceite Energy, Inc. | Abilene, TX 79605 | Oil & Gas Operator | Dec 2025 |
| 6212 | La Campana, Inc. | Port Aransas, TX 78373 | Oil & Gas Operator | Dec 2025 |
| 6213 | La Jolla Oil & Gas, Inc. | Frisco, TX 75034 | Oil & Gas Operator | Dec 2025 |
| 6214 | La Mar, Paul W. | Nocona, TX 76255 | Oil & Gas Operator | May 1995 |
| 6215 | La Parrita Oil & Gas, Inc. | Rosenberg, TX 77471 | Oil & Gas Operator | May 2002 |
| 6216 | La Roca Energy, LP | Dallas, TX 75207 | Oil & Gas Operator | May 2024 |
| 6217 | La Ronya Oil & Gas | George West, TX 78022 | Gas Operator | Dec 2025 |
| 6218 | La Sara Operating Company, LLC | Houston, TX 77056 | Oil & Gas Operator | Dec 2015 |
| 6219 | La Vernia Oil | La Vernia, TX 78121 | Oil Operator | Dec 2025 |
| 6220 | La Vernia Oil Co. | La Vernia, TX 78121 | Oil & Gas Operator | Aug 2003 |
| 6221 | La VIda Energy Corporation | Midland, TX 79702 | Oil & Gas Operator | Apr 1993 |
| 6222 | Lace Operating | Fort Worth, TX 76114 | Oil & Gas Operator | Jun 1997 |
| 6223 | Lackey, William H. Oil And Gas | Shawnee, OK 74804 | Oil & Gas Operator | Feb 2024 |
| 6224 | Laclede Operating Co. | Pampa, TX 79065 | Gas Operator | Aug 1999 |
| 6225 | Lacy 03, LLC | Gonzales, TX 78629 | Oil & Gas Operator | Dec 2025 |
| 6226 | Lacy Operations, LTD. | Longview, TX 75606 | Oil & Gas Operator | Oct 2012 |
| 6227 | Lacy, F. B. Inc. | Houston, TX 77055 | Oil & Gas Operator | Sep 1997 |
| 6228 | Lacy, J. W., Jr. | Midland, TX 79702 | Oil & Gas Operator | Dec 2007 |
| 6229 | Lacy, R., Inc. | Longview, TX 75606 | Oil & Gas Operator | Jan 2002 |
| 6230 | Ladd Oil & Gas Corporation | Midland, TX 79711 | Oil & Gas Operator | Dec 2021 |
| 6231 | Ladd Operating Company | Midland, TX 79711 | Oil & Gas Operator | Mar 2008 |
| 6232 | Ladd Petroleum Corp. | Denver, CO 80202 | Oil & Gas Operator | Oct 2004 |
| 6233 | Laddex, LTD. | Amarillo, TX 79102 | Oil & Gas Operator | Feb 2025 |
| 6234 | Lafonda Energy LLC | Vernon, TX 76384 | Oil Operator | Dec 2025 |
| 6235 | Lagarto Company, The | Fredericksbrg, TX 78624 | Oil & Gas Operator | Apr 1995 |
| 6236 | Lagerquist, Walter G., Jr. | San Antonio, TX 78209 | Oil & Gas Operator | Sep 2005 |
| 6237 | Laguna Oil & Gas Corp. | Weesatche, TX 77993 | Oil & Gas Operator | Dec 2025 |
| 6238 | Laguna Petroleum Company | Casper, WY 82601 | Oil & Gas Operator | Dec 1982 |
| 6239 | Laguna Petroleum Corporation | Houston, TX 77046 | Oil & Gas Operator | Dec 2025 |
| 6240 | Lainco Well Service | Hamlin, TX 79520 | Oil & Gas Operator | Dec 1996 |
| 6241 | Lainco Well Service, Inc. | Hamlin, TX 79520 | Oil & Gas Operator | Aug 2011 |
| 6242 | Lainco, Inc. | Hamlin, TX 79520 | Oil & Gas Operator | Dec 2025 |
| 6243 | Lake Crystal Operating LLC | Sugar Land, TX 77496 | Oil & Gas Operator | Dec 2025 |
| 6244 | Lake Ronel Oil Company | Tyler, TX 75710 | Oil & Gas Operator | Jul 2017 |
| 6245 | Lakehills Production, Inc. | Austin, TX 78701 | Oil & Gas Operator | Dec 2025 |
| 6246 | Lakeshore Operating, LLC | Wichita, KS 67203 | Oil & Gas Operator | Dec 2025 |
| 6247 | Lakewood Energy LLC | Dallas, TX 75214 | Oil & Gas Operator | Dec 2025 |
| 6248 | Lakewood Operating, LTD. | Midland, TX 79702 | Oil & Gas Operator | Dec 2025 |
| 6249 | Lakota Energy, LTD. | Paradise, TX 76073 | Oil & Gas Operator | Dec 2025 |
| 6250 | Laloc | Aspermont, TX 79502 | Oil & Gas Operator | Sep 2025 |
| 6251 | Lama Energy, L.L.C. | Midland, TX 79710 | Oil & Gas Operator | May 2024 |
| 6252 | Lamar Energy | Nocona, TX 76255 | Oil Operator | Dec 2025 |
| 6253 | Lamar Oil & Gas, Inc. | Corpus Chrsti, TX 78413 | Oil & Gas Operator | Dec 2025 |
| 6254 | Lamar Oil Company | Nocona, TX 76255 | Oil & Gas Operator | Oct 2015 |
| 6255 | Lamay Corporation | Rosenberg, TX 77471 | Oil & Gas Operator | Dec 2025 |
| 6256 | Lamb & Mize | Azle, TX 76020 | Oil & Gas Operator | Dec 2025 |
| 6257 | Lamb, James L., Jr. | Austin, TX 78750 | Oil & Gas Operator | Mar 2016 |
| 6258 | Lambeck Petroleum, LLC | Stockdale, TX 78160 | Oil Operator | Dec 2025 |
| 6259 | Lamco Oil, LLC | Nocona, TX 76255 | Oil & Gas Operator | Dec 2025 |
| 6260 | Lamesa Crude | Abilene, TX 79605 | Oil & Gas Operator | Feb 2015 |
| 6261 | Lampert Exploration Corporation | Dallas, TX 75206 | Oil & Gas Operator | Mar 2008 |
| 6262 | Lance Exploration Company | Fort Worth, TX 76102 | Oil & Gas Operator | Jul 1994 |
| 6263 | Lance Leasing | Odessa, TX 79765 | Oil Operator | Dec 2025 |
| 6264 | Lance Oil & Gas Productions | Bloomburg, TX 75556 | Oil & Gas Operator | Dec 2025 |
| 6265 | Lancer Petroleum Corporation | Irving, TX 75014 | Oil & Gas Operator | Feb 2014 |
| 6266 | Lanco Oil & Gas, Inc. | Richland, TX 76681 | Oil & Gas Operator | Jan 1998 |
| 6267 | Land, Cleatus H. Estate | Seguin, TX 78155 | Oil & Gas Operator | Mar 2001 |
| 6268 | Landmark Drilling, L.L.C. | Waskom, TX 75692 | Oil Operator | Dec 2025 |
| 6269 | Landmark Exploration Inc. | Caldwell, TX 77836 | Oil & Gas Operator | Dec 2025 |
| 6270 | Landmark Ip, LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2025 |
| 6271 | Landmark Production Company | MC Gregor, TX 76657 | Oil & Gas Operator | Oct 2010 |
| 6272 | Landmaster Partners, Inc. | Abilene, TX 79601 | Oil & Gas Operator | Dec 2025 |
| 6273 | Landmen Of Texas | Hondo, TX 78861 | Oil Operator | Feb 2007 |
| 6274 | Landmen Of Texas, Inc. | Hondo, TX 78861 | Oil Operator | Dec 2016 |
| 6275 | Landor Oil Co. | San Marcos, TX 78666 | Oil Operator | Dec 2025 |
| 6276 | Landreth, Robert E. | Midland, TX 79701 | Oil & Gas Operator | Dec 2025 |
| 6277 | Landrick O & G Operating, LLC | Midland, TX 79705 | Oil & Gas Operator | Dec 2025 |
| 6278 | Landrum Petroleum Co., Inc. | Burkburnett, TX 76354 | Oil Operator | Mar 2008 |
| 6279 | Landrum West, Inc. | Burkburnett, TX 76354 | Oil & Gas Operator | Dec 1997 |
| 6280 | Landrum, W. A. | Byers, TX 76357 | Oil & Gas Operator | Apr 2002 |
| 6281 | Lane Operating Company | Wichita Falls, TX 76301 | Oil & Gas Operator | Dec 2025 |
| 6282 | Lane, Lloyd L. | Buffalo, TX 75831 | Oil Operator | Dec 2025 |
| 6283 | Laneer Resources Company | Abilene, TX 79608 | Oil & Gas Operator | Dec 2025 |
| 6284 | Lanexco, Inc. | Sealy, TX 77474 | Oil & Gas Operator | Dec 2025 |
| 6285 | Langford & Brigham Operating LLC | Austin, TX 78730 | Oil & Gas Operator | Dec 2025 |
| 6286 | Langford Production Company, LLC | Haskell, TX 79521 | Oil & Gas Operator | Dec 2025 |
| 6287 | Langford, G. E. | Abilene, TX 79604 | Oil & Gas Operator | Jan 2002 |
| 6288 | Langford, R. C. Operating Co. | Rule, TX 79547 | Oil & Gas Operator | Mar 1994 |
| 6289 | Langham Petroleum Expl. Corp. | Houston, TX 77056 | Oil & Gas Operator | Dec 2009 |
| 6290 | Langley, Carl A. | Hamshire, TX 77622 | Oil & Gas Operator | Dec 2025 |
| 6291 | Lankford Oil Co. | Weatherford, TX 76086 | Oil & Gas Operator | Jul 1999 |
| 6292 | Lankford, Dan L. | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 6293 | Lapco Oil & Gas Company | Houston, TX 77069 | Oil & Gas Operator | Oct 2015 |
| 6294 | Lapetco Inc | Plano, TX 75093 | Oil & Gas Operator | Aug 2024 |
| 6295 | Lapis Operating, Inc. | Houston, TX 77042 | Oil & Gas Operator | Jul 2015 |
| 6296 | Laquey, E. C. | Refugio, TX 78377 | Oil & Gas Operator | Aug 2003 |
| 6297 | Larae Operations | Luling, TX 78648 | Oil Operator | Dec 2025 |
| 6298 | Larance Engineering Company | Wichita Falls, TX 76301 | Oil & Gas Operator | Jan 1996 |
| 6299 | Laredo Energy | Houston, TX 77002 | Oil & Gas Operator | Jun 2016 |
| 6300 | Laredo Energy Operating, LLC | Houston, TX 77024 | Oil & Gas Operator | Nov 2022 |