| 16401 | L B Exploration Inc | Wichita, KS 67205 | Oil & Gas Operator | Jan 2025 |
| 16402 | L B G Operating Co | Fairfax, OK 74037 | Oil & Gas Operator | Oct 2014 |
| 16403 | L B Industries Inc | Englewood, CO 80112 | Oil & Gas Operator | Jun 2003 |
| 16404 | L B Petroleum In | | Oil Operator | Nov 1995 |
| 16405 | L D & Associates | Broken Arrow, OK 74014-1712 | Oil Operator | Feb 2012 |
| 16406 | L D O Incorporat | | Oil Operator | Jul 1988 |
| 16407 | L E Carpenter Oil & Gas, Inc. | | Oil & Gas Operator | Sep 1985 |
| 16408 | L E Jones Operating Inc | Duncan, OK 73534 | Oil & Gas Operator | Mar 2025 |
| 16409 | L H Energy Incor | | Oil Operator | Dec 1991 |
| 16410 | L L & H E Kidd | | Gas Operator | Sep 1990 |
| 16411 | L L & M Properties, Inc. | Burkburnett, TX 76354 | Oil & Gas Operator | Aug 2004 |
| 16412 | L P C Energy, Inc. | | Oil & Gas Operator | Mar 1985 |
| 16413 | L P Oil Company Inc. | | Oil & Gas Operator | Mar 2025 |
| 16414 | L R Company | Casper, WY 82602 | Oil & Gas Operator | Sep 2007 |
| 16415 | L R French Jr | Midland, TX 79701 | Oil & Gas Operator | Aug 2014 |
| 16416 | L R Operating Co. | Graford, TX 76449 | Oil & Gas Operator | May 2025 |
| 16417 | L V Gas Incorpor | | Oil & Gas Operator | Mar 1991 |
| 16418 | L&DWG LLC | Copeland, KS 67837 | Gas Operator | Jan 2025 |
| 16419 | L&L Oil Company LLC | Copan, OK 74022-4608 | Oil Operator | Mar 2014 |
| 16420 | L&M, Inc. | Vienna, WV 26105 | Oil & Gas Operator | Dec 2024 |
| 16421 | L&N DRLG Co&K.D. Lankford, Jr | | Gas Operator | Aug 2006 |
| 16422 | L'Oil Operating & Management Co., Inc. | | Oil & Gas Operator | Nov 2024 |
| 16423 | L'Oil Operating And MGMT. Co. | | Oil & Gas Operator | Dec 2008 |
| 16424 | L-83, Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 1995 |
| 16425 | L-K Wireline, Inc. | Hays, KS 67601 | Oil Operator | Dec 2019 |
| 16426 | L-R Production | Olney, TX 76374 | Oil & Gas Operator | May 2025 |
| 16427 | L-Reno Oil And Gas LLC | Graford, TX 76449 | Oil & Gas Operator | May 2025 |
| 16428 | L-Texx Petroleum, LP | Arlington, TX 76013 | Oil & Gas Operator | May 2025 |
| 16429 | L. A. W. Oil, LLC | | Oil Operator | Dec 2018 |
| 16430 | L. A. West | | Gas Operator | Feb 2000 |
| 16431 | L. B. Petroleum, Inc. | Denver, CO 80202 | Gas Operator | Jan 2016 |
| 16432 | L. B. Simmons Energy, Inc. | Midland, TX BAD ADDR | Oil & Gas Operator | Oct 1996 |
| 16433 | L. D. Drilling, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Jan 2025 |
| 16434 | L. D. McMullan | | Oil Operator | Jun 2023 |
| 16435 | L. E. Gillespie | | Oil Operator | Sep 1984 |
| 16436 | L. E. Hester | | Gas Operator | Oct 2004 |
| 16437 | L. R. Fitzgerald | | Oil & Gas Operator | Feb 2015 |
| 16438 | L. R. Resources II | | Oil & Gas Operator | Feb 1991 |
| 16439 | L. S. K. L. Oil Co. | Buda, TX 78610 | Oil & Gas Operator | May 2025 |
| 16440 | L. W. Babcock | | Oil Operator | Dec 1986 |
| 16441 | L. W. Snuffy McCartney | | Oil Operator | Jul 2015 |
| 16442 | L.C. Coon Production Co. | | Oil Operator | Apr 1995 |
| 16443 | L.C.S. Production Company | Abilene, TX 79608 | Oil & Gas Operator | May 2025 |
| 16444 | L.J. Exploration, Inc. | | Oil & Gas Operator | Dec 2020 |
| 16445 | L.J. Resources, LLC | Graham, TX 76450 | Gas Operator | May 2025 |
| 16446 | L.J.M. Corporation | Houston, TX 77025 | Oil & Gas Operator | Jun 2012 |
| 16447 | L.K. Energies, Inc. | | Oil & Gas Operator | Dec 2002 |
| 16448 | L.L. Oil Company | Freer, TX 78357 | Oil & Gas Operator | May 2025 |
| 16449 | L.L. Tuck | | Oil Operator | Jan 2001 |
| 16450 | L.O.G. Energy Exploration, LTD. | Laredo, TX 78041 | Oil & Gas Operator | May 2025 |
| 16451 | L.S.E. Energy-V.P. Smith | | Oil Operator | Mar 1988 |
| 16452 | L.T.D. Explorations Inc. | Alice, TX 78333 | Oil & Gas Operator | May 2025 |
| 16453 | L2SG Production, LLC | Nocona, TX 76255 | Oil Operator | May 2020 |
| 16454 | L7 Energy LLC | Wichita Falls, TX 76308 | Oil Operator | May 2025 |
| 16455 | La Aceite Energy, Inc. | Abilene, TX 79605 | Oil & Gas Operator | May 2025 |
| 16456 | La Campana, Inc. | Port Aransas, TX 78373 | Oil & Gas Operator | May 2025 |
| 16457 | La Chalk Gathering System | | Oil Operator | Jan 2006 |
| 16458 | La Coastal Pet.Services Co Inc | | Oil & Gas Operator | Dec 1982 |
| 16459 | La Delta Farms Oil Company LLC | | Oil & Gas Operator | Dec 2024 |
| 16460 | La Gas Dev Corp/Araxas | | Oil & Gas Operator | Dec 2001 |
| 16461 | La Honda Fields Limited Partnership | | Oil & Gas Operator | Dec 2021 |
| 16462 | La Intrastate Gas Co LLC | | Oil Operator | Apr 2004 |
| 16463 | La Jolla Oil & Gas, Inc. | Frisco, TX 75034 | Oil & Gas Operator | May 2025 |
| 16464 | La Land Co. | | Oil Operator | Dec 1989 |
| 16465 | La Mar, Paul W. | Nocona, TX 76255 | Oil & Gas Operator | May 1995 |
| 16466 | La Mesa Production, Inc. | | Oil & Gas Operator | Apr 2004 |
| 16467 | La Paloma Generating Company LLC | | Oil & Gas Operator | Dec 2000 |
| 16468 | La Parrita Oil & Gas, Inc. | Rosenberg, TX 77471 | Oil & Gas Operator | May 2002 |
| 16469 | La Plata Gathering System Inc | Dallas, TX 75206 | Gas Operator | Nov 2023 |
| 16470 | La Prele Exploration | | Oil & Gas Operator | Oct 1979 |
| 16471 | La Roca Energy, LP | Dallas, TX 75207 | Oil & Gas Operator | May 2024 |
| 16472 | La Ronya Oil & Gas | George West, TX 78022 | Gas Operator | May 2025 |
| 16473 | La Sara Operating Company, LLC | Houston, TX 77056 | Oil & Gas Operator | Dec 2015 |
| 16474 | La Vernia Oil | La Vernia, TX 78121 | Oil Operator | May 2025 |
| 16475 | La Vernia Oil Co. | La Vernia, TX 78121 | Oil & Gas Operator | Aug 2003 |
| 16476 | La Veta Oil & Gas, LLC | Middleburg, VA 20118 | Oil Operator | Jan 2025 |
| 16477 | La VIda Energy Corporation | Midland, TX 79702 | Oil & Gas Operator | Apr 1993 |
| 16478 | La. Fete Oil & Gas, Inc. | | Oil & Gas Operator | May 1995 |
| 16479 | La. Gas Production, L.C. | | Gas Operator | Sep 2018 |
| 16480 | La. Land & Expl. Co. | | Oil & Gas Operator | Dec 2010 |
| 16481 | La. Mining & Minerals, Inc. | | Oil & Gas Operator | Jul 2000 |
| 16482 | La. Nap. Inc. Lanlock Res Inc | | Oil Operator | Feb 1995 |
| 16483 | La. Onshore Properties Inc. | | Oil & Gas Operator | Dec 2000 |
| 16484 | La.-TX. Operating, Inc. | | Oil & Gas Operator | May 1998 |
| 16485 | La.Gas Service Expl. Program | | Gas Operator | Dec 1989 |
| 16486 | Labarge Minerals Inc | Labarge, WY 83123 | Oil & Gas Operator | Jan 2020 |
| 16487 | Labelle Petroleum, Inc. | | Oil & Gas Operator | Oct 1990 |
| 16488 | Labelle Wayne R | Punxsutawney, PA 15767-1161 | Gas Operator | Dec 2024 |
| 16489 | Laben, David Glenn & Janice W. | Darien Center, NY 14040 | Gas Operator | Dec 2023 |
| 16490 | Labh Hospitality, Inc. | Westfield, NY 14787 | Gas Operator | Dec 2023 |
| 16491 | Labo Oil Company Inc | Drumright, OK 74030-5619 | Oil & Gas Operator | Dec 2024 |
| 16492 | Lace Operating | Fort Worth, TX 76114 | Oil & Gas Operator | Jun 1997 |
| 16493 | Lacen Oil | | Oil Operator | Jan 2002 |
| 16494 | Lachenmayr Oil C | | Oil Operator | Sep 1996 |
| 16495 | Lachenmayr Oil LLC | Newton, KS 67114 | Oil & Gas Operator | Jan 2025 |
| 16496 | Lackawanna City School District | Lackawanna, NY 14218 | Gas Operator | Dec 2023 |
| 16497 | Lackey Danny | Kiefer, OK 74041-0702 | Oil & Gas Operator | Oct 2022 |
| 16498 | Lackey Disposal | | Oil Operator | Jul 1994 |
| 16499 | Lackey Milton | | Oil & Gas Operator | Feb 1995 |
| 16500 | Lackey Raymond R | Lindsay, OK 73052 | Oil & Gas Operator | Jun 2015 |