| 16401 | L & L Resources, Inc. | Hays, KS 67601 | Oil Operator | Mar 1986 |
| 16402 | L & L Smith Energy Corporation | Muskogee, OK 74403-8479 | Oil & Gas Operator | Jan 2023 |
| 16403 | L & L Supply | | Oil Operator | Dec 1994 |
| 16404 | L & M Oil | | Oil Operator | May 2025 |
| 16405 | L & M Oil Co. | Yates Center, KS 66783 | Oil & Gas Operator | Dec 1998 |
| 16406 | L & M Oil Compan | | Oil & Gas Operator | Dec 1986 |
| 16407 | L & M Operating, Inc. | Big Lake, TX 76932 | Oil & Gas Operator | Dec 2025 |
| 16408 | L & M Petroleum Co | Reno, OH 45773 | Oil & Gas Operator | Dec 1987 |
| 16409 | L & N Co. | | Oil Operator | Jul 1991 |
| 16410 | L & N Exploration Inc | | Oil & Gas Operator | Jul 2013 |
| 16411 | L & P Enterprises, LLC | Paola, KS 66071 | Oil Operator | Jun 2025 |
| 16412 | L & R Drilling Company | Belle Fourche, SD 57717 | Oil & Gas Operator | Dec 1999 |
| 16413 | L & R Energy Corporation | Spearman, TX 79081 | Oil & Gas Operator | Nov 2014 |
| 16414 | L & R Oil Company | Oakley, KS 67748 | Oil & Gas Operator | Jan 2004 |
| 16415 | L & R Oil, Inc. | Great Bend, KS 67530 | Oil Operator | Jun 2025 |
| 16416 | L & R Petroleum | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2025 |
| 16417 | L & S Drilling, Inc. | Kamay, TX 76369 | Oil & Gas Operator | Mar 2016 |
| 16418 | L & S Oil & Gas LTD | Newark, OH 43055 | Oil & Gas Operator | Dec 2022 |
| 16419 | L & S Oil And Gas | Newark, OH 43055-8732 | Oil & Gas Operator | Dec 2014 |
| 16420 | L & S Service Corp. | | Oil Operator | Jul 1989 |
| 16421 | L & T Disposal LLC | Wilson, OK 73463-6545 | Oil Operator | Mar 2016 |
| 16422 | L & T Exploration | | Oil & Gas Operator | Dec 1987 |
| 16423 | L & W Oil & Gas, Inc. | | Oil & Gas Operator | May 1994 |
| 16424 | L & W Operators | Pampa, TX 79066 | Oil & Gas Operator | Jan 2018 |
| 16425 | L A Productions | Sunset, TX 76270 | Oil & Gas Operator | Dec 2025 |
| 16426 | L And C Leasing, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Mar 2019 |
| 16427 | L And C Oil Company | | Oil Operator | Aug 1996 |
| 16428 | L And G Drilling | | Oil Operator | Jun 1987 |
| 16429 | L And J Oil Comp | | Oil Operator | Dec 1996 |
| 16430 | L And L Production Company | Skellytown, TX 79080 | Oil & Gas Operator | Sep 1996 |
| 16431 | L B G Operating Co | Fairfax, OK 74037 | Oil & Gas Operator | Oct 2014 |
| 16432 | L B Industries Inc | Englewood, CO 80112 | Oil & Gas Operator | Jun 2003 |
| 16433 | L B Petroleum In | | Oil Operator | Nov 1995 |
| 16434 | L B Simmons Energy Inc | Midland, TX BAD ADDR | Oil & Gas Operator | Oct 1996 |
| 16435 | L D & Associates | Broken Arrow, OK 74014-1712 | Oil Operator | Feb 2012 |
| 16436 | L D O Incorporat | | Oil Operator | Jul 1988 |
| 16437 | L E Carpenter Oil & Gas, Inc. | | Oil & Gas Operator | Sep 1985 |
| 16438 | L H Energy Incor | | Oil Operator | Dec 1991 |
| 16439 | L L & H E Kidd | | Gas Operator | Sep 1990 |
| 16440 | L L & M Properties, Inc. | Burkburnett, TX 76354 | Oil & Gas Operator | Aug 2004 |
| 16441 | L P C Energy, Inc. | | Oil & Gas Operator | Mar 1985 |
| 16442 | L P Oil Company Inc. | | Oil & Gas Operator | Sep 2025 |
| 16443 | L R Company | Casper, WY 82602 | Oil & Gas Operator | Sep 2007 |
| 16444 | L R French Jr | Midland, TX 79701 | Oil & Gas Operator | Aug 2014 |
| 16445 | L R Operating Co. | Graford, TX 76449 | Oil & Gas Operator | Jun 2025 |
| 16446 | L V Gas Incorpor | | Oil & Gas Operator | Mar 1991 |
| 16447 | L&DWG LLC | Copeland, KS 67837 | Gas Operator | Jun 2025 |
| 16448 | L&L Oil Company LLC | Copan, OK 74022-4608 | Oil Operator | Mar 2014 |
| 16449 | L&M, Inc. | Vienna, WV 26105 | Oil & Gas Operator | Dec 2024 |
| 16450 | L&N DRLG Co&K.D. Lankford, Jr | | Gas Operator | Aug 2006 |
| 16451 | L'Oil Operating & Management Co., Inc. | | Oil & Gas Operator | Nov 2024 |
| 16452 | L'Oil Operating And MGMT. Co. | | Oil & Gas Operator | Dec 2008 |
| 16453 | L-83, Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 1995 |
| 16454 | L-K Wireline, Inc. | Hays, KS 67601 | Oil Operator | Dec 2019 |
| 16455 | L-R Production | Olney, TX 76374 | Oil & Gas Operator | Dec 2025 |
| 16456 | L-Reno Oil And Gas LLC | Graford, TX 76449 | Oil & Gas Operator | Dec 2025 |
| 16457 | L-Texx Petroleum, LP | Arlington, TX 76013 | Oil & Gas Operator | Dec 2025 |
| 16458 | L. A. W. Oil, LLC | | Oil Operator | Dec 2018 |
| 16459 | L. A. West | | Gas Operator | Feb 2000 |
| 16460 | L. B. Petroleum, Inc. | Denver, CO 80202 | Gas Operator | Jan 2016 |
| 16461 | L. D. Drilling, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Jun 2025 |
| 16462 | L. D. McMullan | | Oil Operator | Jun 2023 |
| 16463 | L. E. Gillespie | | Oil Operator | Sep 1984 |
| 16464 | L. E. Hester | | Gas Operator | Oct 2004 |
| 16465 | L. R. Fitzgerald | | Oil & Gas Operator | Feb 2015 |
| 16466 | L. R. Resources II | | Oil & Gas Operator | Feb 1991 |
| 16467 | L. S. K. L. Oil Co. | Buda, TX 78610 | Oil & Gas Operator | Dec 2025 |
| 16468 | L. W. Babcock | | Oil Operator | Dec 1986 |
| 16469 | L. W. Snuffy McCartney | | Oil Operator | Jul 2015 |
| 16470 | L.C. Coon Production Co. | | Oil Operator | Apr 1995 |
| 16471 | L.C.S. Production Company | Abilene, TX 79608 | Oil & Gas Operator | Dec 2025 |
| 16472 | L.E. Jones Operating, Inc. | Duncan, OK 73534 | Oil & Gas Operator | Sep 2025 |
| 16473 | L.J. Exploration, Inc. | | Oil & Gas Operator | Dec 2020 |
| 16474 | L.J. Resources, LLC | Graham, TX 76450 | Gas Operator | Dec 2025 |
| 16475 | L.J.M. Corporation | Houston, TX 77025 | Oil & Gas Operator | Jun 2012 |
| 16476 | L.K. Energies, Inc. | | Oil & Gas Operator | Dec 2002 |
| 16477 | L.L. Oil Company | Freer, TX 78357 | Oil & Gas Operator | Dec 2025 |
| 16478 | L.L. Tuck | | Oil Operator | Jan 2001 |
| 16479 | L.O.G. Energy Exploration, LTD. | Laredo, TX 78041 | Oil & Gas Operator | Dec 2025 |
| 16480 | L.S.E. Energy-V.P. Smith | | Oil Operator | Mar 1988 |
| 16481 | L.T.D. Explorations Inc. | Alice, TX 78333 | Oil & Gas Operator | Dec 2025 |
| 16482 | L2SG Production, LLC | Nocona, TX 76255 | Oil Operator | May 2020 |
| 16483 | L7 Energy LLC | Wichita Falls, TX 76308 | Oil Operator | Dec 2025 |
| 16484 | La Aceite Energy, Inc. | Abilene, TX 79605 | Oil & Gas Operator | Dec 2025 |
| 16485 | La Campana, Inc. | Port Aransas, TX 78373 | Oil & Gas Operator | Dec 2025 |
| 16486 | La Chalk Gathering System | | Oil Operator | Jan 2006 |
| 16487 | La Coastal Pet.Services Co Inc | | Oil & Gas Operator | Dec 1982 |
| 16488 | La Delta Farms Oil Company LLC | | Oil & Gas Operator | Dec 2024 |
| 16489 | La Gas Dev Corp/Araxas | | Oil & Gas Operator | Dec 2001 |
| 16490 | La Honda Fields Limited Partnership | | Oil & Gas Operator | Dec 2021 |
| 16491 | La Intrastate Gas Co LLC | | Oil Operator | Apr 2004 |
| 16492 | La Jolla Oil & Gas, Inc. | Frisco, TX 75034 | Oil & Gas Operator | Dec 2025 |
| 16493 | La Land Co. | | Oil Operator | Dec 1989 |
| 16494 | La Mar, Paul W. | Nocona, TX 76255 | Oil & Gas Operator | May 1995 |
| 16495 | La Mesa Production, Inc. | | Oil & Gas Operator | Apr 2004 |
| 16496 | La Paloma Generating Company LLC | | Oil & Gas Operator | Dec 2000 |
| 16497 | La Parrita Oil & Gas, Inc. | Rosenberg, TX 77471 | Oil & Gas Operator | May 2002 |
| 16498 | La Plata Gathering System Inc | Dallas, TX 75206 | Gas Operator | Nov 2023 |
| 16499 | La Prele Exploration | | Oil & Gas Operator | Oct 1979 |
| 16500 | La Roca Energy, LP | Dallas, TX 75207 | Oil & Gas Operator | May 2024 |