| 16601 | Legado DJ, LLC | | Oil & Gas Operator | Jul 2011 |
| 16602 | Legado Gulf Coast, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Apr 2010 |
| 16603 | Legado Midcon, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | May 2010 |
| 16604 | Legado Permian, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | May 2013 |
| 16605 | Legend Energy Corporation | Stillwater, OK 74074-1721 | Oil & Gas Operator | Aug 2022 |
| 16606 | Legend Energy LLC | Cherryvale, KS 67335 | Oil Operator | Apr 2026 |
| 16607 | Legend Energy Texas, LLC | Arlington, TX 76002 | Oil & Gas Operator | Aug 2026 |
| 16608 | Legend Fund, LLC | | Oil & Gas Operator | Jan 2025 |
| 16609 | Legend Natural Gas II, LP | Houston, TX 77094 | Oil & Gas Operator | Feb 2015 |
| 16610 | Legend Natural Gas III, LP | Houston, TX 77094 | Oil & Gas Operator | Feb 2015 |
| 16611 | Legend Natural Gas IV, LP | Houston, TX 77094 | Oil & Gas Operator | Feb 2015 |
| 16612 | Legend Natural Gas, LP | Houston, TX 77084 | Oil & Gas Operator | Aug 2004 |
| 16613 | Legend Oil & Gas LTD. | Alpharetta, GA 30022 | Oil Operator | Mar 2015 |
| 16614 | Legend Operating, LLC | Dallas, TX 75219 | Oil & Gas Operator | May 2010 |
| 16615 | Legendary Oil Co., Inc. | | Oil Operator | Feb 2004 |
| 16616 | Legendary Well Service, Inc. | | Oil Operator | Jan 1996 |
| 16617 | Leger Production Company, Inc. | | Oil & Gas Operator | Apr 1984 |
| 16618 | Legg, Raymond | | Oil Operator | Dec 2010 |
| 16619 | Leggett Oil Company | Dallas, TX 75379 | Oil & Gas Operator | Oct 1999 |
| 16620 | Leggett Petroleum, L.L.C. | | Oil & Gas Operator | Dec 2020 |
| 16621 | Legleiter, Julius A. | Hays, KS 67601 | Oil Operator | Apr 1996 |
| 16622 | Legrand, Buck | Sedan, KS 67361 | Oil Operator | Jun 1994 |
| 16623 | Lehnertz, G. M. | Tyler, TX 75702 | Oil & Gas Operator | Dec 1998 |
| 16624 | Lehnertz-Faulkner, Inc. | Tyler, TX 75701 | Oil & Gas Operator | Feb 2023 |
| 16625 | Leicht, Cecil | Streetman, TX 75859 | Oil & Gas Operator | Feb 1998 |
| 16626 | Leigh Operating Co | Dallas, TX 75205 | Oil & Gas Operator | Mar 2008 |
| 16627 | Leighty, Roger Operator | Lawrenceville, IL 62439 | Oil & Gas Operator | Oct 1997 |
| 16628 | Leiker, Edward P. | Hays, KS 67601 | Oil Operator | Apr 1992 |
| 16629 | Leis Oil Services, LLC | Yates Center, KS 66783 | Oil Operator | Jul 2023 |
| 16630 | Leis, John E. | Yates Center, KS 66783 | Oil Operator | Apr 2026 |
| 16631 | Leis, Ryan M. | Scottsdale, AZ 85258 | Oil & Gas Operator | Dec 2009 |
| 16632 | Leis, Steven A. | Yates Center, KS 66783 | Oil Operator | Apr 2026 |
| 16633 | Leis, VIctor J. | Paola, KS 66071 | Oil & Gas Operator | Apr 2026 |
| 16634 | Leith Operations | | Oil Operator | Jul 1989 |
| 16635 | Lejan, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Aug 2026 |
| 16636 | Lekan James V | Ashland, OH 44805 | Oil & Gas Operator | Dec 1997 |
| 16637 | Leland Chapman Dba Chapman Oil Company | Duncan, OK 73533 | Oil & Gas Operator | Apr 2026 |
| 16638 | Leland Oil & Gas, LLC | | Oil & Gas Operator | May 2026 |
| 16639 | Leland Petroleum Production Inc | | Oil & Gas Operator | Dec 2007 |
| 16640 | Lem Operating Co., Inc. | Colorado City, TX 79512 | Oil & Gas Operator | Nov 2012 |
| 16641 | Lema Petroleum Inc | Seminole, OK 74868 | Oil & Gas Operator | May 2026 |
| 16642 | Lemay Oil Company | Snyder, TX 79549 | Oil & Gas Operator | Jun 2002 |
| 16643 | Lemley Oil Corporation | Sulphur, OK 73086-9316 | Oil & Gas Operator | Aug 2025 |
| 16644 | Lemon, Richard F. Jr. | Carrollton, TX 75006 | Oil & Gas Operator | Aug 2026 |
| 16645 | Lenape Resources Corp | | Oil & Gas Operator | Dec 2000 |
| 16646 | Lendrum Energy LLC | Cranberry, PA 16319-4009 | Oil & Gas Operator | Dec 2025 |
| 16647 | Lenert & Pettitt, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Sep 1994 |
| 16648 | Lengacher William P | Creston, OH 44217 | Oil & Gas Operator | Dec 2025 |
| 16649 | Lenhart Oil Company | Cashion, OK 73016-0188 | Oil & Gas Operator | Jul 2016 |
| 16650 | Lennon Oil Inc. | Corsicana, TX 75110 | Oil & Gas Operator | Oct 2008 |
| 16651 | Leo Michaelis Oil Operator | | Oil Operator | Oct 2002 |
| 16652 | Leo Vesenmeir, Jr. | | Oil & Gas Operator | Jul 1987 |
| 16653 | Leo Windham | | Oil Operator | Jul 1992 |
| 16654 | Leon J. Sabean | | Oil & Gas Operator | Dec 2018 |
| 16655 | Leonard 1&2 LLC | | Oil Operator | Jun 2026 |
| 16656 | Leonard Brothers Operating Co. | Fort Worth, TX 76101 | Oil & Gas Operator | Aug 2026 |
| 16657 | Leonard Vann | | Oil Operator | Apr 2026 |
| 16658 | Leonard, Daniel M. | Fort Worth, TX 76101 | Oil & Gas Operator | Nov 2001 |
| 16659 | Leonard, J. A. | Austin, TX 78734 | Oil & Gas Operator | Aug 2026 |
| 16660 | Leonard, Patricia Anne | San Antonio, TX 78209 | Oil & Gas Operator | Oct 1996 |
| 16661 | Leone, Thomas E. | Elma, NY 14059 | Gas Operator | Dec 2025 |
| 16662 | Leopard, Glenn | Malakoff, TX 75148 | Oil & Gas Operator | Aug 2003 |
| 16663 | Leopold Oil Company | Bartlesville, OK 74003 | Oil & Gas Operator | Apr 2026 |
| 16664 | Leopoldo P Bustamante | Midland, TX 79710 | Oil & Gas Operator | Apr 2012 |
| 16665 | Leor Energy Indigo L.P. | Houston, TX 77079 | Gas Operator | Oct 2017 |
| 16666 | Lep Development Company, LLC | Houston, TX 77007 | Oil & Gas Operator | Jul 2020 |
| 16667 | Lepp, Paul N. | Cherry Creek, NY 14723 | Gas Operator | Dec 2025 |
| 16668 | Lera | Borger, TX 79007 | Oil & Gas Operator | Aug 2026 |
| 16669 | Lerblance Jr W P Estate | Hartshorne, OK 74547-0449 | Oil & Gas Operator | Apr 2020 |
| 16670 | Leroy Holt Oil Operations | | Oil Operator | Mar 2010 |
| 16671 | Leroy Oil Co. | Gainesville, TX 76240 | Oil & Gas Operator | Jun 2002 |
| 16672 | Leroy W. James | | Oil & Gas Operator | Oct 1991 |
| 16673 | Les Miller | | Oil & Gas Operator | Dec 1991 |
| 16674 | Lesco Corp. | | Oil Operator | Dec 2000 |
| 16675 | Leshen Energy USA LLC | | Oil Operator | Jan 2025 |
| 16676 | Lesikar, L. W. | Fort Worth, TX 76121 | Oil & Gas Operator | Jun 2006 |
| 16677 | Leslie Oil & Gas Co Inc | Zanesville, OH 43701 | Oil & Gas Operator | Dec 1991 |
| 16678 | Lester Joan | Sand Springs, OK 74063 | Oil & Gas Operator | Apr 2026 |
| 16679 | Let Production Company | | Oil Operator | Jun 2026 |
| 16680 | Letog LLC | Orwell, OH 44076 | Oil & Gas Operator | Dec 2025 |
| 16681 | Letwin & Kallison | Fort Worth, TX 76107 | Oil & Gas Operator | Jun 2004 |
| 16682 | Lety Oil Co. | Luling, TX 78648 | Oil & Gas Operator | Aug 2002 |
| 16683 | Levant Energy LLC | Milton, MA 02186 | Oil Operator | Aug 2026 |
| 16684 | Levee Oil LLC | Tuscola, TX 79562 | Oil Operator | Aug 2026 |
| 16685 | Levengood Oil & Gas(Us)In | Dover, OH 44621-2900 | Oil & Gas Operator | Dec 1997 |
| 16686 | Levens, C. H. | Water Valley, TX 76958 | Oil & Gas Operator | May 2010 |
| 16687 | Leverage Operating, LLC | San Antonio, TX 78257 | Oil & Gas Operator | Dec 2021 |
| 16688 | Levi Oil Company | Wichita, KS 67218 | Oil & Gas Operator | Nov 1993 |
| 16689 | Levinson Partners Corporation | Denver, CO 80202 | Oil & Gas Operator | Jul 1995 |
| 16690 | Levinson Silvan E | Tulsa, OK 74119 | Oil & Gas Operator | Feb 2012 |
| 16691 | Levisay Operating Co. | Brownwood, TX 76801 | Oil & Gas Operator | Aug 2026 |
| 16692 | Lewbet Inc | Perry, OK 73077 | Oil & Gas Operator | Aug 2024 |
| 16693 | Lewis & Clark Exploration | | Oil Operator | Feb 1989 |
| 16694 | Lewis & Hays | Albany, TX 76430 | Oil & Gas Operator | Feb 2002 |
| 16695 | Lewis & Manziel | | Oil Operator | Apr 1989 |
| 16696 | Lewis A. Hembree Production Company | Shawnee, OK 74801 | Oil & Gas Operator | Apr 2026 |
| 16697 | Lewis Energy LLC | Tulsa, OK 74159 | Oil Operator | Apr 2026 |
| 16698 | Lewis Heirs 480, LLC | Bryson, TX 76427 | Oil & Gas Operator | Aug 2026 |
| 16699 | Lewis J K | Duncan, OK 73534-1742 | Oil & Gas Operator | Apr 2015 |
| 16700 | Lewis James D Oil Company | Healdton, OK 73438 | Oil Operator | Apr 2026 |