| 16101 | L. R. Fitzgerald | | Oil & Gas Operator | Feb 2015 |
| 16102 | L. R. Resources II | | Oil & Gas Operator | Feb 1991 |
| 16103 | L. S. K. L. Oil Co. | Buda, TX 78610 | Oil & Gas Operator | Aug 2026 |
| 16104 | L. W. Babcock | | Oil Operator | Dec 1986 |
| 16105 | L. W. Snuffy McCartney | | Oil Operator | Jul 2015 |
| 16106 | L.C. Coon Production Co. | | Oil Operator | Apr 1995 |
| 16107 | L.C.S. Production Company | Abilene, TX 79608 | Oil & Gas Operator | Aug 2026 |
| 16108 | L.J. Exploration, Inc. | | Oil & Gas Operator | Dec 2020 |
| 16109 | L.J. Resources, LLC | Graham, TX 76450 | Gas Operator | Feb 2026 |
| 16110 | L.J.M. Corporation | Houston, TX 77025 | Oil & Gas Operator | Jun 2012 |
| 16111 | L.K. Energies, Inc. | | Oil & Gas Operator | Dec 2002 |
| 16112 | L.L. Oil Company | Freer, TX 78357 | Oil & Gas Operator | Aug 2026 |
| 16113 | L.L. Tuck | | Oil Operator | Jan 2001 |
| 16114 | L.O.G. Energy Exploration, LTD. | Laredo, TX 78041 | Oil & Gas Operator | Aug 2026 |
| 16115 | L.S.E. Energy-V.P. Smith | | Oil Operator | Mar 1988 |
| 16116 | L.T.D. Explorations Inc. | Alice, TX 78333 | Oil & Gas Operator | Aug 2026 |
| 16117 | L2SG Production, LLC | Nocona, TX 76255 | Oil Operator | May 2020 |
| 16118 | L7 Energy LLC | Wichita Falls, TX 76308 | Oil Operator | Aug 2026 |
| 16119 | La Campana, Inc. | Port Aransas, TX 78373 | Oil & Gas Operator | Aug 2026 |
| 16120 | La Chalk Gathering System | | Oil Operator | Jan 2006 |
| 16121 | La Coastal Pet.Services Co Inc | | Oil & Gas Operator | Dec 1982 |
| 16122 | La Delta Farms Oil Company LLC | | Oil & Gas Operator | Dec 2024 |
| 16123 | La Gas Dev Corp/Araxas | | Oil & Gas Operator | Dec 2001 |
| 16124 | La Honda Fields Limited Partnership | | Oil & Gas Operator | Dec 2021 |
| 16125 | La Intrastate Gas Co LLC | | Oil Operator | Apr 2004 |
| 16126 | La Jolla Oil & Gas, Inc. | Frisco, TX 75034 | Oil & Gas Operator | Aug 2026 |
| 16127 | La Land Co. | | Oil Operator | Dec 1989 |
| 16128 | La Mar, Paul W. | Nocona, TX 76255 | Oil & Gas Operator | May 1995 |
| 16129 | La Mesa Production, Inc. | | Oil & Gas Operator | Apr 2004 |
| 16130 | La Paloma Generating Company LLC | | Oil & Gas Operator | Dec 2000 |
| 16131 | La Parrita Oil & Gas, Inc. | Rosenberg, TX 77471 | Oil & Gas Operator | May 2002 |
| 16132 | La Plata Gathering System Inc | Dallas, TX 75206 | Gas Operator | Nov 2023 |
| 16133 | La Prele Exploration | | Oil & Gas Operator | Oct 1979 |
| 16134 | La Roca Energy, LP | Dallas, TX 75207 | Oil & Gas Operator | May 2024 |
| 16135 | La Ronya Oil & Gas | George West, TX 78022 | Gas Operator | Aug 2026 |
| 16136 | La Sara Operating Company, LLC | Houston, TX 77056 | Oil & Gas Operator | Dec 2015 |
| 16137 | La Vernia Oil | La Vernia, TX 78121 | Oil Operator | Aug 2026 |
| 16138 | La Vernia Oil Co. | La Vernia, TX 78121 | Oil & Gas Operator | Aug 2003 |
| 16139 | La Veta Oil & Gas, LLC | Middleburg, VA 20118 | Oil Operator | Apr 2026 |
| 16140 | La VIda Energy Corporation | Midland, TX 79702 | Oil & Gas Operator | Apr 1993 |
| 16141 | La. Fete Oil & Gas, Inc. | | Oil & Gas Operator | May 1995 |
| 16142 | La. Gas Production, L.C. | | Gas Operator | Sep 2018 |
| 16143 | La. Land & Expl. Co. | | Oil & Gas Operator | Dec 2010 |
| 16144 | La. Mining & Minerals, Inc. | | Oil & Gas Operator | Jul 2000 |
| 16145 | La. Nap. Inc. Lanlock Res Inc | | Oil Operator | Feb 1995 |
| 16146 | La. Onshore Properties Inc. | | Oil & Gas Operator | Dec 2000 |
| 16147 | La.-TX. Operating, Inc. | | Oil & Gas Operator | May 1998 |
| 16148 | La.Gas Service Expl. Program | | Gas Operator | Dec 1989 |
| 16149 | Labarge Minerals Inc | Labarge, WY 83123 | Oil & Gas Operator | Jan 2020 |
| 16150 | Labelle Petroleum, Inc. | | Oil & Gas Operator | Oct 1990 |
| 16151 | Laben, David Glenn & Janice W. | Darien Center, NY 14040 | Gas Operator | Dec 2025 |
| 16152 | Labh Hospitality, Inc. | Westfield, NY 14787 | Gas Operator | Dec 2025 |
| 16153 | Labo Oil Company Inc | Drumright, OK 74030-5619 | Oil & Gas Operator | Jul 2025 |
| 16154 | Lace Operating | River Oaks, TX 76114 | Oil & Gas Operator | Jun 1997 |
| 16155 | Lacen Oil | | Oil Operator | Jan 2002 |
| 16156 | Lachenmayr Oil C | | Oil Operator | Sep 1996 |
| 16157 | Lachenmayr Oil LLC | Newton, KS 67114 | Oil & Gas Operator | Apr 2026 |
| 16158 | Lackawanna City School District | Lackawanna, NY 14218 | Gas Operator | Dec 2025 |
| 16159 | Lackey Danny | Kiefer, OK 74041-0702 | Oil & Gas Operator | Oct 2022 |
| 16160 | Lackey Disposal | | Oil Operator | Jul 1994 |
| 16161 | Lackey Milton | | Oil & Gas Operator | Feb 1995 |
| 16162 | Lackey Raymond R | Lindsay, OK 73052 | Oil & Gas Operator | Jun 2015 |
| 16163 | Lackey Raymond R & Assoc | Sulphur, OK 73086 | Oil & Gas Operator | May 2026 |
| 16164 | Lackey WM Oil & Gas Oper Co | Shawnee, OK 74801 | Oil & Gas Operator | Jan 1994 |
| 16165 | Lackey, Donna | Waxahachie, TX 75165 | Oil Operator | Oct 2019 |
| 16166 | Lackey, William H. Oil And Gas | Shawnee, OK 74804 | Oil & Gas Operator | Feb 2024 |
| 16167 | Lacy 03, LLC | Gonzales, TX 78629 | Oil & Gas Operator | Aug 2026 |
| 16168 | Lacy Operations, LTD. | Longview, TX 75606 | Oil & Gas Operator | Oct 2012 |
| 16169 | Lacy, F. B. Inc. | Houston, TX 77055 | Oil & Gas Operator | Sep 1997 |
| 16170 | Lacy, J. W., Jr. | Midland, TX 79702 | Oil & Gas Operator | Dec 2007 |
| 16171 | Lacy, R | Longview, TX 75606 | Oil Operator | Apr 1989 |
| 16172 | Lacy, R., Inc. | Longview, TX 75606 | Oil & Gas Operator | Jan 2002 |
| 16173 | Ladd & Lukowicz | | Oil & Gas Operator | May 1983 |
| 16174 | Ladd LLC | El Reno, OK 73036 | Oil & Gas Operator | Nov 2018 |
| 16175 | Ladd Oil & Gas Corporation | Midland, TX 79711 | Oil & Gas Operator | Dec 2021 |
| 16176 | Ladd Operating Company | Midland, TX 79711 | Oil & Gas Operator | Mar 2008 |
| 16177 | Ladd Petroleum C | | Oil & Gas Operator | Sep 1989 |
| 16178 | Ladd Petroleum Corp. | Denver, CO 80202 | Oil & Gas Operator | Oct 2004 |
| 16179 | Ladder Energy Company | Tulsa, OK 74120-4281 | Oil & Gas Operator | Jan 2018 |
| 16180 | Laddex, LTD. | Amarillo, TX 79102 | Oil & Gas Operator | Feb 2025 |
| 16181 | Lafayette Oilfield Contractors, Inc. | | Oil Operator | Dec 2024 |
| 16182 | Lafonda Energy LLC | Vernon, TX 76384 | Oil Operator | Aug 2026 |
| 16183 | Lagarto Company, The | Fredericksbrg, TX 78624 | Oil & Gas Operator | Apr 1995 |
| 16184 | Lagerquist, Walter G., Jr. | San Antonio, TX 78209 | Oil & Gas Operator | Sep 2005 |
| 16185 | Lagniappe Interest Inc | Evergreen, CO 80439 | Oil & Gas Operator | Jun 2006 |
| 16186 | Lagniappe Interests, Inc. | | Oil & Gas Operator | Dec 2003 |
| 16187 | Lagniappe Operating, LLC | | Oil Operator | Dec 2024 |
| 16188 | Lagniappe Petrole LLC | | Oil & Gas Operator | Dec 2024 |
| 16189 | Lago Petroleum Co. | | Oil & Gas Operator | Jan 1992 |
| 16190 | Lago VIsta Operating, L.L.C. | | Oil Operator | Dec 2024 |
| 16191 | Lagoon Water Logistics LLC | Oklahoma City, OK 73103 | Oil Operator | Jul 2024 |
| 16192 | Laguna County Sanitation District | | Oil & Gas Operator | Dec 2003 |
| 16193 | Laguna Oil & Gas Corp. | Weesatche, TX 77993 | Oil & Gas Operator | Aug 2026 |
| 16194 | Laguna Petroleum Company | Casper, WY 82601 | Oil & Gas Operator | Dec 1982 |
| 16195 | Laguna Petroleum Corporation | Houston, TX 77046 | Oil & Gas Operator | Aug 2026 |
| 16196 | Laguna Texas Resources, LLC | Houston, TX 77018 | Oil & Gas Operator | Aug 2026 |
| 16197 | Lahd Energy Inc | Canton, OH 44709 | Gas Operator | Dec 2009 |
| 16198 | Lahoma Gas Company | | Gas Operator | Dec 1980 |
| 16199 | Lahoma Operating, Inc. | | Oil & Gas Operator | May 2026 |
| 16200 | Lahoma Production Inc | Jenks, OK 74037 | Oil & Gas Operator | May 2026 |