| 6501 | Liquid Petroleum Resources, Inc. | Amarillo, TX 79120 | Gas Operator | Dec 2025 |
| 6502 | Lissner, Lindy | Jourdanton, TX 78026 | Oil & Gas Operator | Dec 2025 |
| 6503 | Litchfield Production Co. | Nederland, TX 77627 | Oil & Gas Operator | Dec 2025 |
| 6504 | Little & Whyte Operating, Inc. | Tyler, TX 75711 | Oil & Gas Operator | Mar 2008 |
| 6505 | Little Cypress Oil & Gas, L.L.C. | Fullerton, CA 92834 | Oil Operator | Dec 2025 |
| 6506 | Little Drop Oil Company | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 6507 | Little Oil & Gas | Pampa, TX 79065 | Oil & Gas Operator | Dec 2025 |
| 6508 | Little River Energy Company | Drumright, OK 74030 | Oil & Gas Operator | Nov 2025 |
| 6509 | Little, Lou Operating Co., Inc. | Portland, TX 78374 | Oil & Gas Operator | Sep 2014 |
| 6510 | Little, Quintin Company,Inc.,The | Ardmore, OK 73402 | Oil & Gas Operator | Dec 2025 |
| 6511 | Littlepage, Tommy | Graham, TX 76450 | Oil & Gas Operator | May 1996 |
| 6512 | Live Oak Gas Company | Dallas, TX 75251 | Oil & Gas Operator | Dec 2025 |
| 6513 | Live Oak Op & Production, L.L.C. | Austin, TX 78759 | Oil & Gas Operator | Nov 2011 |
| 6514 | Live Oak Petroleum, Inc. | Dallas, TX 75251 | Gas Operator | Mar 2001 |
| 6515 | Live Oak Reserves, Inc. | Houston, TX 77019 | Oil & Gas Operator | Dec 2025 |
| 6516 | Live Oak/Operations, Inc. | Houston, TX 77019 | Gas Operator | Jul 2011 |
| 6517 | Lively Energy & Development Corp | Boerne, TX 78015 | Oil & Gas Operator | May 2015 |
| 6518 | Lively Exploration Company | Houston, TX 77063 | Oil & Gas Operator | Dec 2025 |
| 6519 | Lively Resources, Inc. | Houston, TX 77056 | Gas Operator | Dec 1998 |
| 6520 | Livingston, David Oil Company | Haskell, TX 79521 | Oil & Gas Operator | Aug 2003 |
| 6521 | Livingston, F. L. | Megargel, TX 76370 | Oil & Gas Operator | May 2018 |
| 6522 | Lizard Lick Transport, LLC | Grandfalls, TX 79742 | Oil & Gas Operator | Dec 2025 |
| 6523 | LKD Corp. | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2018 |
| 6524 | LKKTX 2018, LLC | Wichita Falls, TX 76305 | Oil Operator | Dec 2025 |
| 6525 | LKM Oil & Gas | Jacksboro, TX 76458 | Oil & Gas Operator | Sep 2024 |
| 6526 | LKM Oil And Gas LLC | Jacksboro, TX 76458 | Oil & Gas Operator | Dec 2025 |
| 6527 | Llano Management Company, Inc. | El Campo, TX 77437 | Gas Operator | Oct 2001 |
| 6528 | Llano Production Company | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2025 |
| 6529 | Llewellin Operating Company, LLC | Houston, TX 77024 | Oil & Gas Operator | Dec 2017 |
| 6530 | Llog Expl. Co. | Metairie, LA 70005 | Oil & Gas Operator | Jan 2003 |
| 6531 | Llog Exploration Offshore, Inc. | Covington, LA 70433 | Oil & Gas Operator | Aug 2004 |
| 6532 | Llog Exploration Texas, L.P. | Covington, LA 70433 | Oil & Gas Operator | Dec 2025 |
| 6533 | Llog Production Company | Metairie, LA 70005 | Oil & Gas Operator | Apr 1995 |
| 6534 | Llox, L.L.C. | Covington, LA 70433 | Oil & Gas Operator | Dec 2025 |
| 6535 | LLT Energy, Inc. | Luling, TX 78648 | Oil & Gas Operator | Dec 2025 |
| 6536 | LMG Operating Company, Inc. | Graham, TX 76450 | Oil & Gas Operator | Feb 2007 |
| 6537 | LMH Energy | Wichita Falls, TX 76302 | Oil & Gas Operator | Dec 2025 |
| 6538 | LMN Oil And Gas, Inc. | Luling, TX 78648 | Oil & Gas Operator | Mar 2008 |
| 6539 | LMP Exploration Operating, LLC | Corpus Chrsti, TX 78477 | Oil & Gas Operator | Feb 2008 |
| 6540 | LMP Petroleum, Inc. | Corpus Chrsti, TX 78477 | Oil & Gas Operator | Jan 2010 |
| 6541 | LNH Oil Company | Midland, TX 79708 | Oil & Gas Operator | Jan 2006 |
| 6542 | LNR Energy Corp | Houston, TX 77002 | Oil & Gas Operator | Mar 2008 |
| 6543 | Lobo Energy, Inc. | Laredo, TX 78044 | Oil & Gas Operator | Nov 1996 |
| 6544 | Lobo Oil Company | Woodson, TX 76491 | Oil & Gas Operator | Sep 1999 |
| 6545 | Lobo Operating, Inc. | Houston, TX 77077 | Oil & Gas Operator | Dec 2024 |
| 6546 | Lobo Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 1995 |
| 6547 | Lobo Resources, LTD. | Houston, TX 77077 | Oil & Gas Operator | Apr 1994 |
| 6548 | Locin Oil Corporation | Katy, TX 77494 | Oil & Gas Operator | Dec 2025 |
| 6549 | Lockout Corporation | Austin, TX 78746 | Oil & Gas Operator | Dec 2025 |
| 6550 | Lode Holdings, LLC | Wichita Falls, TX 76301 | Oil Operator | Dec 2025 |
| 6551 | Lodel Energy Resources Corporation | Houston, TX 77042 | Oil & Gas Operator | Dec 2025 |
| 6552 | Lodestone Operating | Portland, TX 78374 | Oil & Gas Operator | Oct 2025 |
| 6553 | Lodestone Operating, Inc. | Portland, TX 78374 | Oil & Gas Operator | Dec 2025 |
| 6554 | Lodi Drilling & Service Co. | Corpus Chrsti, TX 78426 | Oil & Gas Operator | Dec 2025 |
| 6555 | Lodi Operating Company LLC | Corpus Chrsti, TX 78426 | Oil & Gas Operator | Dec 2025 |
| 6556 | Loeb, Herman L, LLC | Lawrenceville, IL 62439 | Oil Operator | Dec 2017 |
| 6557 | Lofton, W. A. | Wichita Falls, TX 76301 | Oil & Gas Operator | Jun 1998 |
| 6558 | Log Operating, LLC | Eagle Pass, TX 78853 | Oil & Gas Operator | Dec 2025 |
| 6559 | Logan Energy Co. | Cross Plains, TX 76443 | Oil & Gas Operator | Nov 1997 |
| 6560 | Logas Energy, LLC | Lafayette, LA 70508 | Oil & Gas Operator | Dec 2025 |
| 6561 | Loin Energy Corporation | La Grange, TX 78945 | Oil & Gas Operator | Dec 2025 |
| 6562 | Lolocav, LLC | Sonora, TX 76950 | Oil & Gas Operator | Dec 2025 |
| 6563 | Loma Oil Company | San Antonio, TX 78209 | Oil & Gas Operator | Apr 2014 |
| 6564 | Loma VIsta Farms | Floresville, TX 78114 | Oil & Gas Operator | Jun 2019 |
| 6565 | Lomak Production Company | Fort Worth, TX 76102 | Oil & Gas Operator | Aug 1998 |
| 6566 | Lomax Operating Company, Inc. | Abilene, TX 79602 | Oil & Gas Operator | Jun 2011 |
| 6567 | London Petroleum Corporation | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2025 |
| 6568 | Lone Oak Energy Inc | Kyle, TX 78640 | Oil & Gas Operator | Dec 2025 |
| 6569 | Lone Pine Production Assoc.,Inc. | Houston, TX 77056 | Oil & Gas Operator | Apr 1993 |
| 6570 | Lone Star Gas Co. | Dallas, TX 75201 | Oil & Gas Operator | Jul 1999 |
| 6571 | Lone Star Land And Energy II LLC | Dallas, TX 75214 | Oil & Gas Operator | Jan 2020 |
| 6572 | Lone Star Oil & Gas | Midland, TX 79702 | Oil & Gas Operator | Dec 2025 |
| 6573 | Lone Star Oil Co. | Jacksboro, TX 76458 | Oil & Gas Operator | Sep 2025 |
| 6574 | Lone Star Operating Company | Pearsall, TX 78061 | Oil & Gas Operator | Dec 2025 |
| 6575 | Lone Star Operations LLC | Lubbock, TX 79401 | Oil & Gas Operator | Dec 2025 |
| 6576 | Lone Star Pipeline Company | Dallas, TX 75201 | Oil & Gas Operator | Jul 1999 |
| 6577 | Lone Star Production | Lawn, TX 79530 | Oil & Gas Operator | Dec 2025 |
| 6578 | Lone Star Services | Pecos, TX 79772 | Oil & Gas Operator | Dec 2025 |
| 6579 | Lone Tree Oil & Gas LLC | Greenwood VLG, CO 80111 | Oil & Gas Operator | Dec 2025 |
| 6580 | Lone Wolf Operating Company | Denver, CO 80202 | Oil & Gas Operator | Nov 2005 |
| 6581 | Lone Wolf Operating Company, LP | Haxtun, CO 80731 | Oil & Gas Operator | Sep 2009 |
| 6582 | Lonesome B, LLC | Monahans, TX 79756 | Oil & Gas Operator | Dec 2025 |
| 6583 | Lonestar Operating, LLC | Houston, TX 77084 | Oil & Gas Operator | Nov 2022 |
| 6584 | Lonestar Production Services | Graham, TX 76450 | Oil Operator | Dec 2025 |
| 6585 | Long Operating, L.L.C. | Shreveport, LA 71166 | Oil & Gas Operator | Jun 2006 |
| 6586 | Long Petroleum, Inc. | Shreveport, LA 71166 | Oil & Gas Operator | Jun 2020 |
| 6587 | Long Trusts, The | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2025 |
| 6588 | Long, Edgar E. | Windthorst, TX 76389 | Oil & Gas Operator | Oct 2011 |
| 6589 | Long, Larry T. | Kilgore, TX 75663 | Oil & Gas Operator | Jun 2017 |
| 6590 | Long-Tex Exploration, Inc. | Kilgore, TX 75662 | Oil & Gas Operator | Dec 2025 |
| 6591 | Longbotham Energy, LLC | Jackson, TN 38308 | Oil Operator | Dec 2025 |
| 6592 | Longfellow Energy, LP | Dallas, TX 75225 | Oil & Gas Operator | Dec 2025 |
| 6593 | Longhorn Oil Properties, Inc. | Pottsboro, TX 75076 | Oil & Gas Operator | Dec 2025 |
| 6594 | Longhorn Service & Drilling Co. | Kermit, TX 79745 | Oil & Gas Operator | Jun 2019 |
| 6595 | Longshot Energy LLC | League City, TX 77573 | Oil Operator | Dec 2025 |
| 6596 | Longview Production, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2002 |
| 6597 | Lorac, Inc. | Dallas, TX 75252 | Oil & Gas Operator | Dec 2025 |
| 6598 | Lorentz Oil & Gas LLC | Edmond, OK 73034-7266 | Oil & Gas Operator | Oct 2025 |
| 6599 | Lorenz & Bosanko | San Antonio, TX 78247 | Oil & Gas Operator | Dec 2025 |
| 6600 | Lorenz, J. P., Jr. | La Vernia, TX 78121 | Oil & Gas Operator | Mar 2008 |