| 16901 | Leatherwood, LLC | Canonsburg, PA 15317-6506 | Oil & Gas Operator | Dec 2023 |
| 16902 | Leavell Resource | | Oil Operator | Dec 1993 |
| 16903 | Leavell Resources Corporation | Hays, KS 67601 | Oil & Gas Operator | Mar 2015 |
| 16904 | Leben Corp. | Wichita, KS 67202 | Oil & Gas Operator | Dec 2011 |
| 16905 | Leben Drilling I | | Oil & Gas Operator | Dec 1988 |
| 16906 | Leben Oil Corpor | | Oil & Gas Operator | Apr 1991 |
| 16907 | Leben Theodore I | | Oil & Gas Operator | Dec 1995 |
| 16908 | Leben* Theodore I Dba Leben Oil Companies | | Oil Operator | Jun 2002 |
| 16909 | Leboeuf MFG Inc | Waterford, PA 16441-0458 | Gas Operator | Dec 1990 |
| 16910 | Lebosquet Gas Operations, LLC | Wichita, KS 67202 | Gas Operator | Jan 2025 |
| 16911 | Lebosquet John R | | Gas Operator | Dec 1994 |
| 16912 | Lebosquet, John W. | Wichita, KS 67202 | Gas Operator | Jan 2025 |
| 16913 | Lebow, Marvin E. | Tulsa, OK 74135 | Oil & Gas Operator | Jun 1997 |
| 16914 | Lebsack Oil Prod | | Oil & Gas Operator | Nov 1995 |
| 16915 | Lebsack Oil Production Inc. | Stafford, KS 67578 | Oil & Gas Operator | Jan 2025 |
| 16916 | Lebsack, James S. | Denver, CO 80222 | Oil Operator | Sep 1998 |
| 16917 | Lebus Oilfield Service Co | | Oil Operator | Sep 2009 |
| 16918 | Leclair Operating Co., Inc. | Abilene, TX 79602 | Oil & Gas Operator | May 2025 |
| 16919 | Leclair Operating, L.L.C. | Abilene, TX 79602 | Oil & Gas Operator | May 2025 |
| 16920 | Leclair-Westwood Inc | | Oil & Gas Operator | Mar 1982 |
| 16921 | Led Enterprises | El Dorado, KS 67042 | Oil Operator | Sep 1999 |
| 16922 | Led Enterprises LLC | El Dorado, KS 67042 | Oil Operator | Dec 2009 |
| 16923 | Ledbetter, Jerald D. Estate Of | Breckenridge, TX 76424 | Oil & Gas Operator | May 2025 |
| 16924 | Ledbetter, Jerald D. Oil Company | Breckenridge, TX 76424 | Oil & Gas Operator | Jan 2007 |
| 16925 | Ledbetter, Morris | Abilene, TX 79605 | Oil & Gas Operator | Jun 2005 |
| 16926 | Ledbetter, O. H. | Albany, TX 76430 | Oil & Gas Operator | Mar 1997 |
| 16927 | Ledford Jan Oil & Gas | Duncan, OK 73533-3210 | Oil Operator | Dec 2024 |
| 16928 | Ledger Operating Corporation | Abilene, TX 79601 | Oil Operator | May 2025 |
| 16929 | Lee And Jane Laird | | Oil & Gas Operator | Dec 2002 |
| 16930 | Lee Brothers Oil Co. | Houston, TX 77056 | Oil & Gas Operator | Mar 2008 |
| 16931 | Lee Donna Oil Co | | Oil & Gas Operator | Dec 1996 |
| 16932 | Lee E & M Lee Minter | New Kensington, PA 15068-1440 | Gas Operator | Dec 2003 |
| 16933 | Lee Energy Exploration LTD | Oklahoma City, OK 73102-7114 | Oil & Gas Operator | Jul 2008 |
| 16934 | Lee Energy LLC | Edmond, OK 73034-7668 | Oil Operator | Jan 2005 |
| 16935 | Lee Jr W E | Beggs, OK 74421-2683 | Oil & Gas Operator | May 2013 |
| 16936 | Lee Lamberson Inc. | | Oil & Gas Operator | Dec 2000 |
| 16937 | Lee Lynn MGMT Co | Indiana, PA 15701-3400 | Oil & Gas Operator | Dec 1991 |
| 16938 | Lee M Crane | Bloomfield, NM 87413 | Gas Operator | Mar 2025 |
| 16939 | Lee Mills | | Oil Operator | Feb 1992 |
| 16940 | Lee Of Tulsa Oil & Gas Inc | Tulsa, OK 74114-5634 | Oil & Gas Operator | Dec 2021 |
| 16941 | Lee Phillips Oil Company | | Oil Operator | Jan 2025 |
| 16942 | Lee Production Co. | Monahans, TX 79756 | Oil & Gas Operator | May 2025 |
| 16943 | Lee Ron | Emory, TX 75440 | Oil Operator | Feb 2025 |
| 16944 | Lee Roy Daigle | | Oil Operator | Dec 1992 |
| 16945 | Lee'S Summit Gas Co. | | Gas Operator | Dec 1933 |
| 16946 | Lee, R.A., Inc. | | Oil Operator | Nov 1972 |
| 16947 | Lee-Walker Mineral, LLC | Houston, TX 77269 | Oil Operator | May 2025 |
| 16948 | Leed Energy LLC | Purcell, OK 73080-1383 | Oil & Gas Operator | Feb 2025 |
| 16949 | Leede Oil & Gas Inc. | Greenwood VLG, CO 80111 | Oil & Gas Operator | Aug 2003 |
| 16950 | Leedy Oil Produc | | Oil & Gas Operator | Dec 1995 |
| 16951 | Leedy Oil Producers | | Oil Operator | Nov 2009 |
| 16952 | Leejan Oil Company | Amarillo, TX 79109 | Oil & Gas Operator | May 2025 |
| 16953 | Leeman Don J | Oklahoma City, OK 73112 | Oil & Gas Operator | Sep 1998 |
| 16954 | Leeman Energy Co | | Oil & Gas Operator | Jan 1987 |
| 16955 | Leeman Energy Corporation | Oklahoma City, OK 73118-1802 | Oil & Gas Operator | Mar 2015 |
| 16956 | Leeper Oil Exp. & Prod. Inc. | Midland, TX 79701 | Oil & Gas Operator | Sep 2005 |
| 16957 | Lees Petroleum LLC | | Oil & Gas Operator | Jul 2000 |
| 16958 | Leeward Operators LLC | | Oil & Gas Operator | Jul 2011 |
| 16959 | Leexus Oil & Gas L.L.P. | Giddings, TX 78942 | Oil & Gas Operator | Jun 2008 |
| 16960 | Leexus Oil LLC | Giddings, TX 78942 | Oil & Gas Operator | May 2025 |
| 16961 | Leexus Operating Company | Austin, TX 78734 | Oil & Gas Operator | Aug 2007 |
| 16962 | Lefco Resources LLC | Henryetta, OK 74437 | Gas Operator | Feb 2025 |
| 16963 | Leffel'S, Inc. | Abilene, TX 79601 | Oil & Gas Operator | Jun 2020 |
| 16964 | Lefforge & Klein | Amarillo, TX 79114 | Gas Operator | Jun 1997 |
| 16965 | Lefort, Marian G. | Strykersville, NY 14145 | Gas Operator | Dec 2023 |
| 16966 | Left Behind Recovery, LLC | Luling, TX 78648 | Oil & Gas Operator | May 2025 |
| 16967 | Left-Hand Ranch, LLC | Helotes, TX 78023 | Oil Operator | May 2025 |
| 16968 | Leg Up Operating Company LLC | Tulsa, OK 74135 | Oil Operator | Feb 2025 |
| 16969 | Legacy - M & K Corporation | Dallas, TX 75231-0969 | Oil & Gas Operator | Jan 2025 |
| 16970 | Legacy Acres, LLC | South Dayton, NY 14138 | Gas Operator | Dec 2023 |
| 16971 | Legacy Corporation, The | Cedar Park, TX 78613 | Oil & Gas Operator | Jun 2004 |
| 16972 | Legacy Energy Inc | Carpinteria, CA 93013 | Oil & Gas Operator | Jun 2012 |
| 16973 | Legacy Energy LLC | Russell, KS 67665 | Oil Operator | Jan 2025 |
| 16974 | Legacy Energy Services | Jourdanton, TX 78026 | Oil Operator | May 2025 |
| 16975 | Legacy Energy Services LLC | Stillwater, OK 74074 | Oil & Gas Operator | Mar 2025 |
| 16976 | Legacy Exploration, LLC I | Dallas, TX 75201 | Oil & Gas Operator | May 2025 |
| 16977 | Legacy Oil & Gas ND, Inc. | | Oil & Gas Operator | Feb 2016 |
| 16978 | Legacy Oil & Gas, Inc. | Portland, TX 78374 | Oil & Gas Operator | May 2025 |
| 16979 | Legacy Oil, LLC | Falls Of Rough, KY 40119 | Oil Operator | Dec 2023 |
| 16980 | Legacy Oklahoma Operators LLC | Shawnee, OK 74804-1447 | Oil & Gas Operator | Feb 2025 |
| 16981 | Legacy Operating Company | | Oil & Gas Operator | Aug 1992 |
| 16982 | Legacy Operating Company, LLC | Dallas, TX 75205 | Oil Operator | Jun 2024 |
| 16983 | Legacy Petroleum Corporation | Dallas, TX 75225 | Oil & Gas Operator | Mar 2019 |
| 16984 | Legacy Petroleum LLC | Tulsa, OK 74135 | Oil & Gas Operator | Dec 2023 |
| 16985 | Legacy Reserves Operating LP | Denver, CO 80201 | Oil & Gas Operator | May 2025 |
| 16986 | Legacy Resources Co., L.P. | | Oil & Gas Operator | Apr 2019 |
| 16987 | Legado DJ, LLC | | Oil Operator | Jul 2011 |
| 16988 | Legado Gulf Coast, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Apr 2010 |
| 16989 | Legado Midcon, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | May 2010 |
| 16990 | Legado Permian, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | May 2013 |
| 16991 | Legend Energy Corporation | Stillwater, OK 74074-1721 | Oil & Gas Operator | Aug 2022 |
| 16992 | Legend Energy LLC | Cherryvale, KS 67335 | Oil Operator | Dec 2024 |
| 16993 | Legend Energy Texas, LLC | Arlington, TX 76002 | Oil & Gas Operator | May 2025 |
| 16994 | Legend Fund, LLC | | Oil & Gas Operator | Jan 2025 |
| 16995 | Legend Natural Gas II, LP | Houston, TX 77094 | Oil & Gas Operator | Feb 2015 |
| 16996 | Legend Natural Gas III, LP | Houston, TX 77094 | Oil & Gas Operator | Feb 2015 |
| 16997 | Legend Natural Gas IV, LP | Houston, TX 77094 | Oil & Gas Operator | Feb 2015 |
| 16998 | Legend Natural Gas, LP | Houston, TX 77084 | Oil & Gas Operator | Aug 2004 |
| 16999 | Legend Oil & Gas LTD. | Alpharetta, GA 30022 | Oil Operator | Mar 2015 |
| 17000 | Legend Operating, LLC | Dallas, TX 75219 | Oil & Gas Operator | May 2010 |