| 16901 | Lee-Walker Mineral, LLC | Houston, TX 77269 | Oil Operator | Jun 2025 |
| 16902 | Leed Energy LLC | Purcell, OK 73080-1383 | Oil & Gas Operator | Feb 2025 |
| 16903 | Leede Oil & Gas Inc. | Greenwood VLG, CO 80111 | Oil & Gas Operator | Aug 2003 |
| 16904 | Leedy Oil Produc | | Oil & Gas Operator | Dec 1995 |
| 16905 | Leedy Oil Producers | | Oil Operator | Nov 2009 |
| 16906 | Leejan Oil Company | Amarillo, TX 79109 | Oil & Gas Operator | Jun 2025 |
| 16907 | Leeman Don J | Oklahoma City, OK 73112 | Oil & Gas Operator | Sep 1998 |
| 16908 | Leeman Energy Co | | Oil & Gas Operator | Jan 1987 |
| 16909 | Leeman Energy Corporation | Oklahoma City, OK 73118-1802 | Oil & Gas Operator | Mar 2015 |
| 16910 | Leeper Oil Exp. & Prod. Inc. | Midland, TX 79701 | Oil & Gas Operator | Sep 2005 |
| 16911 | Lees Petroleum LLC | | Oil & Gas Operator | Jul 2000 |
| 16912 | Leeward Operators LLC | | Oil & Gas Operator | Jul 2011 |
| 16913 | Leexus Oil & Gas L.L.P. | Giddings, TX 78942 | Oil & Gas Operator | Jun 2008 |
| 16914 | Leexus Oil LLC | Giddings, TX 78942 | Oil & Gas Operator | Jun 2025 |
| 16915 | Leexus Operating Company | Austin, TX 78734 | Oil & Gas Operator | Aug 2007 |
| 16916 | Lefco Resources LLC | Henryetta, OK 74437 | Gas Operator | Feb 2025 |
| 16917 | Leffel'S, Inc. | Abilene, TX 79601 | Oil & Gas Operator | Jun 2020 |
| 16918 | Lefforge & Klein | Amarillo, TX 79114 | Gas Operator | Jun 1997 |
| 16919 | Lefort, Marian G. | Strykersville, NY 14145 | Gas Operator | Dec 2023 |
| 16920 | Left Behind Recovery, LLC | Luling, TX 78648 | Oil & Gas Operator | Jun 2025 |
| 16921 | Leg Up Operating Company LLC | Tulsa, OK 74135 | Oil Operator | Feb 2025 |
| 16922 | Legacy - M & K Corporation | Dallas, TX 75231-0969 | Oil & Gas Operator | Jan 2025 |
| 16923 | Legacy Acres, LLC | South Dayton, NY 14138 | Gas Operator | Dec 2023 |
| 16924 | Legacy Corporation, The | Cedar Park, TX 78613 | Oil & Gas Operator | Jun 2004 |
| 16925 | Legacy Energy Inc | Carpinteria, CA 93013 | Oil & Gas Operator | Jun 2012 |
| 16926 | Legacy Energy LLC | Russell, KS 67665 | Oil Operator | Feb 2025 |
| 16927 | Legacy Energy Services | Jourdanton, TX 78026 | Oil Operator | Jun 2025 |
| 16928 | Legacy Energy Services LLC | Stillwater, OK 74074 | Oil & Gas Operator | Mar 2025 |
| 16929 | Legacy Exploration, LLC I | Dallas, TX 75201 | Oil & Gas Operator | Jun 2025 |
| 16930 | Legacy Oil & Gas ND, Inc. | | Oil & Gas Operator | Feb 2016 |
| 16931 | Legacy Oil & Gas, Inc. | Portland, TX 78374 | Oil & Gas Operator | Jun 2025 |
| 16932 | Legacy Oil, LLC | Falls Of Rough, KY 40119 | Oil Operator | Dec 2023 |
| 16933 | Legacy Oklahoma Operators LLC | Shawnee, OK 74804-1447 | Oil & Gas Operator | Feb 2025 |
| 16934 | Legacy Operating Company | | Oil & Gas Operator | Aug 1992 |
| 16935 | Legacy Operating Company, LLC | Dallas, TX 75205 | Oil Operator | Jun 2024 |
| 16936 | Legacy Petroleum Corporation | Dallas, TX 75225 | Oil & Gas Operator | Mar 2019 |
| 16937 | Legacy Petroleum LLC | Tulsa, OK 74135 | Oil & Gas Operator | Dec 2023 |
| 16938 | Legacy Reserves Operating LP | Denver, CO 80201 | Oil & Gas Operator | Jun 2025 |
| 16939 | Legacy Resources Co., L.P. | | Oil & Gas Operator | Apr 2019 |
| 16940 | Legado DJ, LLC | | Oil Operator | Jul 2011 |
| 16941 | Legado Gulf Coast, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Apr 2010 |
| 16942 | Legado Midcon, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | May 2010 |
| 16943 | Legado Permian, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | May 2013 |
| 16944 | Legend Energy Corporation | Stillwater, OK 74074-1721 | Oil & Gas Operator | Aug 2022 |
| 16945 | Legend Energy LLC | Cherryvale, KS 67335 | Oil Operator | Dec 2024 |
| 16946 | Legend Energy Texas, LLC | Arlington, TX 76002 | Oil & Gas Operator | Jun 2025 |
| 16947 | Legend Fund, LLC | | Oil & Gas Operator | Jan 2025 |
| 16948 | Legend Natural Gas II, LP | Houston, TX 77094 | Oil & Gas Operator | Feb 2015 |
| 16949 | Legend Natural Gas III, LP | Houston, TX 77094 | Oil & Gas Operator | Feb 2015 |
| 16950 | Legend Natural Gas IV, LP | Houston, TX 77094 | Oil & Gas Operator | Feb 2015 |
| 16951 | Legend Natural Gas, LP | Houston, TX 77084 | Oil & Gas Operator | Aug 2004 |
| 16952 | Legend Oil & Gas LTD. | Alpharetta, GA 30022 | Oil Operator | Mar 2015 |
| 16953 | Legend Operating, LLC | Dallas, TX 75219 | Oil & Gas Operator | May 2010 |
| 16954 | Legendary Oil Co., Inc. | | Oil Operator | Feb 2004 |
| 16955 | Legendary Well Service, Inc. | | Oil Operator | Jan 1996 |
| 16956 | Leger Production Company, Inc. | | Oil & Gas Operator | Apr 1984 |
| 16957 | Legg, Raymond | | Oil Operator | Dec 2010 |
| 16958 | Leggett Oil Company | Dallas, TX 75379 | Oil & Gas Operator | Oct 1999 |
| 16959 | Leggett Petroleum, L.L.C. | | Oil & Gas Operator | Dec 2020 |
| 16960 | Legleiter, Julius A. | Hays, KS 67601 | Oil Operator | Apr 1996 |
| 16961 | Legrand, Buck | Sedan, KS 67361 | Oil Operator | Jun 1994 |
| 16962 | Lehnertz, G. M. | Tyler, TX 75702 | Oil & Gas Operator | Dec 1998 |
| 16963 | Lehnertz-Faulkner, Inc. | Tyler, TX 75701 | Oil & Gas Operator | Feb 2023 |
| 16964 | Leicht, Cecil | Streetman, TX 75859 | Oil & Gas Operator | Feb 1998 |
| 16965 | Leigh Operating Co | Dallas, TX 75205 | Oil & Gas Operator | Mar 2008 |
| 16966 | Leighty, Roger Operator | Lawrenceville, IL 62439 | Oil & Gas Operator | Oct 1997 |
| 16967 | Leiker, Edward P. | Hays, KS 67601 | Oil Operator | Apr 1992 |
| 16968 | Leis Oil Services, LLC | Yates Center, KS 66783 | Oil Operator | Jul 2023 |
| 16969 | Leis, John E. | Yates Center, KS 66783 | Oil Operator | Jan 2025 |
| 16970 | Leis, Ryan M. | Scottsdale, AZ 85258 | Oil & Gas Operator | Dec 2009 |
| 16971 | Leis, Steven A. | Yates Center, KS 66783 | Oil Operator | Feb 2025 |
| 16972 | Leis, VIctor J. | Paola, KS 66071 | Oil & Gas Operator | Dec 2024 |
| 16973 | Leith Operations | | Oil Operator | Jul 1989 |
| 16974 | Lejan, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Jun 2025 |
| 16975 | Lekan James V | Ashland, OH 44805 | Oil & Gas Operator | Dec 1997 |
| 16976 | Leland Oil & Gas, LLC | | Oil & Gas Operator | Apr 2025 |
| 16977 | Leland Petroleum Production Inc | | Oil & Gas Operator | Dec 2007 |
| 16978 | Lem Operating Co., Inc. | Colorado City, TX 79512 | Oil & Gas Operator | Nov 2012 |
| 16979 | Lema Petroleum Inc | Seminole, OK 74868 | Oil & Gas Operator | Feb 2025 |
| 16980 | Lemasters, Charles A. | Jacksonburg, WV 26377-0000 | Oil & Gas Operator | Dec 2021 |
| 16981 | Lemay Oil Company | Snyder, TX 79549 | Oil & Gas Operator | Jun 2002 |
| 16982 | Lemley Oil Corporation | Sulphur, OK 73086-9316 | Oil & Gas Operator | Jan 2025 |
| 16983 | Lemon, Richard F. Jr. | Carrollton, TX 75006 | Oil & Gas Operator | Jun 2025 |
| 16984 | Lenape Resources Corp | | Oil & Gas Operator | Dec 2000 |
| 16985 | Lenape Resources LLC | Alexander, NY 14005 | Oil & Gas Operator | Dec 2023 |
| 16986 | Lendrum Energy LLC | Cranberry, PA 16319-4009 | Oil & Gas Operator | Dec 2023 |
| 16987 | Lenert & Pettitt, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Sep 1994 |
| 16988 | Lengacher William P | Creston, OH 44217 | Oil & Gas Operator | Dec 2024 |
| 16989 | Lenhart Oil Company | Cashion, OK 73016-0188 | Oil & Gas Operator | Jul 2016 |
| 16990 | Lennon Oil Inc. | Corsicana, TX 75110 | Oil & Gas Operator | Oct 2008 |
| 16991 | Leo Michaelis Oil Operator | | Oil Operator | Oct 2002 |
| 16992 | Leo Vesenmeir, Jr. | | Oil & Gas Operator | Jul 1987 |
| 16993 | Leo Windham | | Oil Operator | Jul 1992 |
| 16994 | Leon J. Sabean | | Oil & Gas Operator | Dec 2018 |
| 16995 | Leonard 1&2 LLC | | Oil Operator | Apr 2025 |
| 16996 | Leonard Brothers Operating Co. | Fort Worth, TX 76101 | Oil & Gas Operator | Jun 2025 |
| 16997 | Leonard Vann | | Oil Operator | Feb 2025 |
| 16998 | Leonard, Daniel M. | Fort Worth, TX 76101 | Oil & Gas Operator | Nov 2001 |
| 16999 | Leonard, J. A. | Austin, TX 78734 | Oil & Gas Operator | Jun 2025 |
| 17000 | Leonard, Jon N And Dottie L | Williamstown, WV 26187 | Gas Operator | Dec 2021 |