| 16801 | Led Enterprises | El Dorado, KS 67042 | Oil Operator | Sep 1999 |
| 16802 | Led Enterprises LLC | El Dorado, KS 67042 | Oil Operator | Dec 2009 |
| 16803 | Ledbetter, Jerald D. Estate Of | Breckenridge, TX 76424 | Oil & Gas Operator | Jul 2025 |
| 16804 | Ledbetter, Jerald D. Oil Company | Breckenridge, TX 76424 | Oil & Gas Operator | Jan 2007 |
| 16805 | Ledbetter, Morris | Abilene, TX 79605 | Oil & Gas Operator | Jun 2005 |
| 16806 | Ledbetter, O. H. | Albany, TX 76430 | Oil & Gas Operator | Mar 1997 |
| 16807 | Ledford Jan Oil & Gas | Duncan, OK 73533-3210 | Oil Operator | Apr 2025 |
| 16808 | Ledger Operating Corporation | Abilene, TX 79601 | Oil Operator | Jul 2025 |
| 16809 | Lee And Jane Laird | | Oil & Gas Operator | Dec 2002 |
| 16810 | Lee Brothers Oil Co. | Houston, TX 77056 | Oil & Gas Operator | Mar 2008 |
| 16811 | Lee Donna Oil Co | | Oil & Gas Operator | Dec 1996 |
| 16812 | Lee E & M Lee Minter | New Kensington, PA 15068-1440 | Gas Operator | Dec 2003 |
| 16813 | Lee Energy Exploration LTD | Oklahoma City, OK 73102-7114 | Oil & Gas Operator | Jul 2008 |
| 16814 | Lee Energy LLC | Edmond, OK 73034-7668 | Oil Operator | Jan 2005 |
| 16815 | Lee Jr W E | Beggs, OK 74421-2683 | Oil & Gas Operator | May 2013 |
| 16816 | Lee Lamberson Inc. | | Oil & Gas Operator | Dec 2000 |
| 16817 | Lee Lynn MGMT Co | Indiana, PA 15701-3400 | Oil & Gas Operator | Dec 1991 |
| 16818 | Lee M Crane | Bloomfield, NM 87413 | Gas Operator | May 2025 |
| 16819 | Lee Mills | | Oil Operator | Feb 1992 |
| 16820 | Lee Of Tulsa Oil & Gas Inc | Tulsa, OK 74114-5634 | Oil & Gas Operator | Dec 2021 |
| 16821 | Lee Phillips Oil Company | | Oil Operator | Mar 2025 |
| 16822 | Lee Production Co. | Monahans, TX 79756 | Oil & Gas Operator | Jul 2025 |
| 16823 | Lee Ron | Emory, TX 75440 | Oil Operator | May 2025 |
| 16824 | Lee Roy Daigle | | Oil Operator | Dec 1992 |
| 16825 | Lee'S Summit Gas Co. | | Gas Operator | Dec 1933 |
| 16826 | Lee, R.A., Inc. | | Oil Operator | Nov 1972 |
| 16827 | Lee-Walker Mineral, LLC | Houston, TX 77269 | Oil Operator | Jul 2025 |
| 16828 | Leed Energy LLC | Purcell, OK 73080-1383 | Oil & Gas Operator | Apr 2025 |
| 16829 | Leede Oil & Gas Inc. | Greenwood VLG, CO 80111 | Oil & Gas Operator | Aug 2003 |
| 16830 | Leedy Oil Produc | | Oil & Gas Operator | Dec 1995 |
| 16831 | Leedy Oil Producers | | Oil Operator | Nov 2009 |
| 16832 | Leejan Oil Company | Amarillo, TX 79109 | Oil & Gas Operator | Jul 2025 |
| 16833 | Leeman Don J | Oklahoma City, OK 73112 | Oil & Gas Operator | Sep 1998 |
| 16834 | Leeman Energy Corporation | Oklahoma City, OK 73118-1802 | Oil & Gas Operator | Mar 2015 |
| 16835 | Leeper Oil Exp. & Prod. Inc. | Midland, TX 79701 | Oil & Gas Operator | Sep 2005 |
| 16836 | Lees Petroleum LLC | | Oil & Gas Operator | Jul 2000 |
| 16837 | Leeward Operators LLC | | Oil & Gas Operator | Jul 2011 |
| 16838 | Leexus Oil & Gas L.L.P. | Giddings, TX 78942 | Oil & Gas Operator | Jun 2008 |
| 16839 | Leexus Oil LLC | Giddings, TX 78942 | Oil & Gas Operator | Jul 2025 |
| 16840 | Leexus Operating Company | Austin, TX 78734 | Oil & Gas Operator | Aug 2007 |
| 16841 | Lefco Resources LLC | Henryetta, OK 74437 | Gas Operator | Apr 2025 |
| 16842 | Leffel'S, Inc. | Abilene, TX 79601 | Oil & Gas Operator | Jun 2020 |
| 16843 | Left Behind Recovery, LLC | Luling, TX 78648 | Oil & Gas Operator | Jul 2025 |
| 16844 | Left-Hand Ranch, LLC | Helotes, TX 78023 | Oil Operator | Jul 2025 |
| 16845 | Leg Up Operating Company LLC | Tulsa, OK 74135 | Oil Operator | May 2025 |
| 16846 | Legacy - M & K Corporation | Dallas, TX 75231-0969 | Oil & Gas Operator | Jan 2025 |
| 16847 | Legacy Acres, LLC | South Dayton, NY 14138 | Gas Operator | Dec 2024 |
| 16848 | Legacy Corporation, The | Cedar Park, TX 78613 | Oil & Gas Operator | Jun 2004 |
| 16849 | Legacy Energy Inc | Carpinteria, CA 93013 | Oil & Gas Operator | Jun 2012 |
| 16850 | Legacy Energy LLC | Russell, KS 67665 | Oil Operator | Feb 2025 |
| 16851 | Legacy Energy Services | Jourdanton, TX 78026 | Oil Operator | Jul 2025 |
| 16852 | Legacy Energy Services LLC | Stillwater, OK 74074 | Oil & Gas Operator | Apr 2025 |
| 16853 | Legacy Exploration, LLC I | Dallas, TX 75201 | Oil & Gas Operator | Jul 2025 |
| 16854 | Legacy Oil & Gas ND, Inc. | | Oil & Gas Operator | Feb 2016 |
| 16855 | Legacy Oil & Gas, Inc. | Portland, TX 78374 | Oil & Gas Operator | Jul 2025 |
| 16856 | Legacy Oil, LLC | Falls Of Rough, KY 40119 | Oil Operator | Dec 2023 |
| 16857 | Legacy Oklahoma Operators LLC | Shawnee, OK 74804-1447 | Oil & Gas Operator | Apr 2025 |
| 16858 | Legacy Operating Company | | Oil & Gas Operator | Aug 1992 |
| 16859 | Legacy Operating Company, LLC | Dallas, TX 75205 | Oil Operator | Jun 2024 |
| 16860 | Legacy Petroleum Corporation | Dallas, TX 75225 | Oil & Gas Operator | Mar 2019 |
| 16861 | Legacy Petroleum LLC | Tulsa, OK 74135 | Oil & Gas Operator | Apr 2025 |
| 16862 | Legacy Reserves Operating LP | Denver, CO 80201 | Oil & Gas Operator | Jul 2025 |
| 16863 | Legacy Resources Co., L.P. | | Oil & Gas Operator | Apr 2019 |
| 16864 | Legado DJ, LLC | | Oil Operator | Jul 2011 |
| 16865 | Legado Gulf Coast, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Apr 2010 |
| 16866 | Legado Midcon, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | May 2010 |
| 16867 | Legado Permian, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | May 2013 |
| 16868 | Legend Energy Corporation | Stillwater, OK 74074-1721 | Oil & Gas Operator | Aug 2022 |
| 16869 | Legend Energy LLC | Cherryvale, KS 67335 | Oil Operator | Dec 2024 |
| 16870 | Legend Energy Texas, LLC | Arlington, TX 76002 | Oil & Gas Operator | Jul 2025 |
| 16871 | Legend Fund, LLC | | Oil & Gas Operator | Jan 2025 |
| 16872 | Legend Natural Gas II, LP | Houston, TX 77094 | Oil & Gas Operator | Feb 2015 |
| 16873 | Legend Natural Gas III, LP | Houston, TX 77094 | Oil & Gas Operator | Feb 2015 |
| 16874 | Legend Natural Gas IV, LP | Houston, TX 77094 | Oil & Gas Operator | Feb 2015 |
| 16875 | Legend Natural Gas, LP | Houston, TX 77084 | Oil & Gas Operator | Aug 2004 |
| 16876 | Legend Oil & Gas LTD. | Alpharetta, GA 30022 | Oil Operator | Mar 2015 |
| 16877 | Legend Operating, LLC | Dallas, TX 75219 | Oil & Gas Operator | May 2010 |
| 16878 | Legendary Oil Co., Inc. | | Oil Operator | Feb 2004 |
| 16879 | Legendary Well Service, Inc. | | Oil Operator | Jan 1996 |
| 16880 | Leger Production Company, Inc. | | Oil & Gas Operator | Apr 1984 |
| 16881 | Legg, Raymond | | Oil Operator | Dec 2010 |
| 16882 | Leggett Oil Company | Dallas, TX 75379 | Oil & Gas Operator | Oct 1999 |
| 16883 | Leggett Petroleum, L.L.C. | | Oil & Gas Operator | Dec 2020 |
| 16884 | Legleiter, Julius A. | Hays, KS 67601 | Oil Operator | Apr 1996 |
| 16885 | Legrand, Buck | Sedan, KS 67361 | Oil Operator | Jun 1994 |
| 16886 | Lehnertz, G. M. | Tyler, TX 75702 | Oil & Gas Operator | Dec 1998 |
| 16887 | Lehnertz-Faulkner, Inc. | Tyler, TX 75701 | Oil & Gas Operator | Feb 2023 |
| 16888 | Leicht, Cecil | Streetman, TX 75859 | Oil & Gas Operator | Feb 1998 |
| 16889 | Leigh Operating Co | Dallas, TX 75205 | Oil & Gas Operator | Mar 2008 |
| 16890 | Leighty, Roger Operator | Lawrenceville, IL 62439 | Oil & Gas Operator | Oct 1997 |
| 16891 | Leiker, Edward P. | Hays, KS 67601 | Oil Operator | Apr 1992 |
| 16892 | Leis Oil Services, LLC | Yates Center, KS 66783 | Oil Operator | Jul 2023 |
| 16893 | Leis, John E. | Yates Center, KS 66783 | Oil Operator | Mar 2025 |
| 16894 | Leis, Ryan M. | Scottsdale, AZ 85258 | Oil & Gas Operator | Dec 2009 |
| 16895 | Leis, Steven A. | Yates Center, KS 66783 | Oil Operator | Mar 2025 |
| 16896 | Leis, VIctor J. | Paola, KS 66071 | Oil & Gas Operator | Dec 2024 |
| 16897 | Leith Operations | | Oil Operator | Jul 1989 |
| 16898 | Lejan, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Jul 2025 |
| 16899 | Lekan James V | Ashland, OH 44805 | Oil & Gas Operator | Dec 1997 |
| 16900 | Leland Oil & Gas, LLC | | Oil & Gas Operator | May 2025 |