| 16401 | L.K. Energies, Inc. | | Oil & Gas Operator | Dec 2002 |
| 16402 | L.L. Oil Company | Freer, TX 78357 | Oil & Gas Operator | Jun 2025 |
| 16403 | L.L. Tuck | | Oil Operator | Jan 2001 |
| 16404 | L.O.G. Energy Exploration, LTD. | Laredo, TX 78041 | Oil & Gas Operator | Jun 2025 |
| 16405 | L.S.E. Energy-V.P. Smith | | Oil Operator | Mar 1988 |
| 16406 | L.T.D. Explorations Inc. | Alice, TX 78333 | Oil & Gas Operator | Jun 2025 |
| 16407 | L2SG Production, LLC | Nocona, TX 76255 | Oil Operator | May 2020 |
| 16408 | L7 Energy LLC | Wichita Falls, TX 76308 | Oil Operator | Jun 2025 |
| 16409 | La Aceite Energy, Inc. | Abilene, TX 79605 | Oil & Gas Operator | Jun 2025 |
| 16410 | La Campana, Inc. | Port Aransas, TX 78373 | Oil & Gas Operator | Jun 2025 |
| 16411 | La Chalk Gathering System | | Oil Operator | Jan 2006 |
| 16412 | La Coastal Pet.Services Co Inc | | Oil & Gas Operator | Dec 1982 |
| 16413 | La Delta Farms Oil Company LLC | | Oil & Gas Operator | Dec 2024 |
| 16414 | La Gas Dev Corp/Araxas | | Oil & Gas Operator | Dec 2001 |
| 16415 | La Honda Fields Limited Partnership | | Oil & Gas Operator | Dec 2021 |
| 16416 | La Intrastate Gas Co LLC | | Oil Operator | Apr 2004 |
| 16417 | La Jolla Oil & Gas, Inc. | Frisco, TX 75034 | Oil & Gas Operator | Jun 2025 |
| 16418 | La Land Co. | | Oil Operator | Dec 1989 |
| 16419 | La Mar, Paul W. | Nocona, TX 76255 | Oil & Gas Operator | May 1995 |
| 16420 | La Mesa Production, Inc. | | Oil & Gas Operator | Apr 2004 |
| 16421 | La Paloma Generating Company LLC | | Oil & Gas Operator | Dec 2000 |
| 16422 | La Parrita Oil & Gas, Inc. | Rosenberg, TX 77471 | Oil & Gas Operator | May 2002 |
| 16423 | La Plata Gathering System Inc | Dallas, TX 75206 | Gas Operator | Nov 2023 |
| 16424 | La Prele Exploration | | Oil & Gas Operator | Oct 1979 |
| 16425 | La Roca Energy, LP | Dallas, TX 75207 | Oil & Gas Operator | May 2024 |
| 16426 | La Ronya Oil & Gas | George West, TX 78022 | Gas Operator | Jun 2025 |
| 16427 | La Sara Operating Company, LLC | Houston, TX 77056 | Oil & Gas Operator | Dec 2015 |
| 16428 | La Vernia Oil | La Vernia, TX 78121 | Oil Operator | Jun 2025 |
| 16429 | La Vernia Oil Co. | La Vernia, TX 78121 | Oil & Gas Operator | Aug 2003 |
| 16430 | La Veta Oil & Gas, LLC | Middleburg, VA 20118 | Oil Operator | Feb 2025 |
| 16431 | La VIda Energy Corporation | Midland, TX 79702 | Oil & Gas Operator | Apr 1993 |
| 16432 | La. Fete Oil & Gas, Inc. | | Oil & Gas Operator | May 1995 |
| 16433 | La. Gas Production, L.C. | | Gas Operator | Sep 2018 |
| 16434 | La. Land & Expl. Co. | | Oil & Gas Operator | Dec 2010 |
| 16435 | La. Mining & Minerals, Inc. | | Oil & Gas Operator | Jul 2000 |
| 16436 | La. Nap. Inc. Lanlock Res Inc | | Oil Operator | Feb 1995 |
| 16437 | La. Onshore Properties Inc. | | Oil & Gas Operator | Dec 2000 |
| 16438 | La.-TX. Operating, Inc. | | Oil & Gas Operator | May 1998 |
| 16439 | La.Gas Service Expl. Program | | Gas Operator | Dec 1989 |
| 16440 | Labarge Minerals Inc | Labarge, WY 83123 | Oil & Gas Operator | Jan 2020 |
| 16441 | Labelle Petroleum, Inc. | | Oil & Gas Operator | Oct 1990 |
| 16442 | Labelle Wayne R | Punxsutawney, PA 15767-1161 | Gas Operator | Dec 2024 |
| 16443 | Laben, David Glenn & Janice W. | Darien Center, NY 14040 | Gas Operator | Dec 2023 |
| 16444 | Labh Hospitality, Inc. | Westfield, NY 14787 | Gas Operator | Dec 2023 |
| 16445 | Labo Oil Company Inc | Drumright, OK 74030-5619 | Oil & Gas Operator | Dec 2024 |
| 16446 | Lace Operating | Fort Worth, TX 76114 | Oil & Gas Operator | Jun 1997 |
| 16447 | Lacen Oil | | Oil Operator | Jan 2002 |
| 16448 | Lachenmayr Oil C | | Oil Operator | Sep 1996 |
| 16449 | Lachenmayr Oil LLC | Newton, KS 67114 | Oil & Gas Operator | Feb 2025 |
| 16450 | Lackawanna City School District | Lackawanna, NY 14218 | Gas Operator | Dec 2023 |
| 16451 | Lackey Danny | Kiefer, OK 74041-0702 | Oil & Gas Operator | Oct 2022 |
| 16452 | Lackey Disposal | | Oil Operator | Jul 1994 |
| 16453 | Lackey Milton | | Oil & Gas Operator | Feb 1995 |
| 16454 | Lackey Raymond R | Lindsay, OK 73052 | Oil & Gas Operator | Jun 2015 |
| 16455 | Lackey Raymond R & Assoc | Sulphur, OK 73086 | Oil & Gas Operator | Mar 2025 |
| 16456 | Lackey WM Oil & Gas Oper Co | Shawnee, OK 74801 | Oil & Gas Operator | Jan 1994 |
| 16457 | Lackey, Donna | Waxahachie, TX 75165 | Oil Operator | Oct 2019 |
| 16458 | Lackey, William H. Oil And Gas | Shawnee, OK 74804 | Oil & Gas Operator | Feb 2024 |
| 16459 | Laclede Operating Co. | Pampa, TX 79065 | Gas Operator | Aug 1999 |
| 16460 | Lacy 03, LLC | Midland, TX 79702 | Oil & Gas Operator | Jun 2025 |
| 16461 | Lacy Operations, LTD. | Longview, TX 75606 | Oil & Gas Operator | Oct 2012 |
| 16462 | Lacy, F. B. Inc. | Houston, TX 77055 | Oil & Gas Operator | Sep 1997 |
| 16463 | Lacy, J. W., Jr. | Midland, TX 79702 | Oil & Gas Operator | Dec 2007 |
| 16464 | Lacy, R | Longview, TX 75606 | Oil Operator | Apr 1989 |
| 16465 | Lacy, R., Inc. | Longview, TX 75606 | Oil & Gas Operator | Jan 2002 |
| 16466 | Ladd & Lukowicz | | Oil & Gas Operator | May 1983 |
| 16467 | Ladd LLC | El Reno, OK 73036 | Oil & Gas Operator | Nov 2018 |
| 16468 | Ladd Oil & Gas Corporation | Midland, TX 79711 | Oil & Gas Operator | Dec 2021 |
| 16469 | Ladd Operating Company | Midland, TX 79711 | Oil & Gas Operator | Mar 2008 |
| 16470 | Ladd Petroleum C | | Oil & Gas Operator | Sep 1989 |
| 16471 | Ladd Petroleum Corp. | Denver, CO 80202 | Oil & Gas Operator | Oct 2004 |
| 16472 | Ladder Energy Company | Tulsa, OK 74120-4281 | Oil & Gas Operator | Jan 2018 |
| 16473 | Laddex, LTD. | Amarillo, TX 79102 | Oil & Gas Operator | Jun 2025 |
| 16474 | Lafayette Oilfield Contractors, Inc. | | Oil Operator | Dec 2024 |
| 16475 | Lafonda Energy LLC | Vernon, TX 76384 | Oil Operator | Jun 2025 |
| 16476 | Lagarto Company, The | Fredericksbrg, TX 78624 | Oil & Gas Operator | Apr 1995 |
| 16477 | Lagerquist, Walter G., Jr. | San Antonio, TX 78209 | Oil & Gas Operator | Sep 2005 |
| 16478 | Lagniappe Interest Inc | Evergreen, CO 80439 | Oil & Gas Operator | Jun 2006 |
| 16479 | Lagniappe Interests, Inc. | | Oil & Gas Operator | Dec 2003 |
| 16480 | Lagniappe Operating, LLC | | Oil Operator | Dec 2024 |
| 16481 | Lagniappe Petrole, LLC | | Oil & Gas Operator | Feb 2025 |
| 16482 | Lago Petroleum Co. | | Oil & Gas Operator | Jan 1992 |
| 16483 | Lago VIsta Operating, L.L.C. | | Oil Operator | Dec 2024 |
| 16484 | Lagoon Water Logistics LLC | Oklahoma City, OK 73103 | Oil Operator | Jul 2024 |
| 16485 | Laguna County Sanitation District | | Oil & Gas Operator | Dec 2003 |
| 16486 | Laguna Oil & Gas Corp. | Weesatche, TX 77993 | Oil & Gas Operator | Jun 2025 |
| 16487 | Laguna Petroleum Company | Casper, WY 82601 | Oil & Gas Operator | Dec 1982 |
| 16488 | Laguna Petroleum Corporation | Houston, TX 77046 | Oil & Gas Operator | Jun 2025 |
| 16489 | Lahd Energy Inc | Canton, OH 44709 | Gas Operator | Dec 2009 |
| 16490 | Lahoma Gas Company | | Gas Operator | Dec 1980 |
| 16491 | Lahoma Operating, Inc. | | Oil & Gas Operator | Feb 2025 |
| 16492 | Lahoma Production Inc | Jenks, OK 74037 | Oil & Gas Operator | Mar 2025 |
| 16493 | Lainco Well Service | Hamlin, TX 79520 | Oil & Gas Operator | Dec 1996 |
| 16494 | Lainco Well Service, Inc. | Hamlin, TX 79520 | Oil & Gas Operator | Aug 2011 |
| 16495 | Lainco, Inc. | Hamlin, TX 79520 | Oil & Gas Operator | Jun 2025 |
| 16496 | Laird Anita Louise | Asher, OK 74826-3215 | Oil Operator | Jun 2018 |
| 16497 | Laird Bill Oil Company | St Louis, OK 74866 | Oil & Gas Operator | Feb 2025 |
| 16498 | Lake A, LTD. | | Oil Operator | May 1998 |
| 16499 | Lake Country Disposal II LLC | Wilson, OK 73463 | Oil Operator | Jan 2025 |
| 16500 | Lake Country Disposal LLC | Ardmore, OK 73401 | Oil Operator | Oct 2024 |