| 16901 | Lea Exploration, Inc. | | Oil & Gas Operator | Nov 1989 |
| 16902 | Leach Joseph L | Gallipolis, OH 45631 | Oil & Gas Operator | Dec 2023 |
| 16903 | Leach, D.L.,Jr. | Edna, TX 77957 | Gas Operator | Oct 2007 |
| 16904 | Leach, Elwood | Osawatomie, KS 66064 | Oil Operator | Dec 2009 |
| 16905 | Leaco Operating, LLC | Houston, TX 77056 | Oil Operator | Sep 2025 |
| 16906 | Leader Equities Inc | Columbus, OH 43214 | Oil & Gas Operator | Dec 1988 |
| 16907 | Leading Edge Energy LLC | San Antonio, TX 78205 | Oil Operator | Dec 2025 |
| 16908 | Leads Resources, L.L.C. | | Oil & Gas Operator | Jan 2017 |
| 16909 | Leahy Oil, LLC | Arlington, TX 76006 | Oil Operator | Dec 2025 |
| 16910 | Leake Keith D | Winfield, KS 67156-8871 | Oil Operator | Apr 2004 |
| 16911 | Leake, Keith D.(Deceased) Estate | Derby, KS 67037 | Oil Operator | Mar 2003 |
| 16912 | Leali & Leali Oil Inc | Hermitage, PA 16148-9020 | Oil & Gas Operator | Dec 2016 |
| 16913 | Leaman Oil Company | Roland, OK 74954 | Oil & Gas Operator | Apr 2014 |
| 16914 | Lear Gas Transmission | | Oil Operator | Aug 1989 |
| 16915 | Lear Oil, LLC | Junction City, KY 40440 | Oil Operator | Dec 2023 |
| 16916 | Lear Petroleum Corp | Houston, TX 77210 | Oil & Gas Operator | Mar 2015 |
| 16917 | Lear Petroleum E | | Oil & Gas Operator | Jan 1986 |
| 16918 | Lear Petroleum Exploration | | Oil & Gas Operator | Jul 2013 |
| 16919 | Lear Petroleum Exploration Inc | Dallas, TX 75206 | Oil & Gas Operator | Aug 1999 |
| 16920 | Learning Disabilities Association Of Wny | Buffalo, NY 14214 | Gas Operator | Dec 2024 |
| 16921 | Lease Holders Acquisitions LLC | Yukon, OK 73099 | Gas Operator | Dec 2025 |
| 16922 | Lease Management Inc | | Oil & Gas Operator | Aug 2025 |
| 16923 | Lease Management Inc And McClure Oil Co | | Oil & Gas Operator | Apr 1991 |
| 16924 | Lease Management Inc And Patrick Petroleum Corp | | Oil & Gas Operator | Apr 1991 |
| 16925 | Leasehold Management Corp | Oklahoma City, OK 73107 | Oil & Gas Operator | Nov 2024 |
| 16926 | Leasing & Develo | | Oil & Gas Operator | Feb 1993 |
| 16927 | Leasing & Development, Inc. | Wichita, KS 67202 | Oil Operator | Jun 2022 |
| 16928 | Leatherman Creek, Inc. | | Oil Operator | Jul 2001 |
| 16929 | Leatherneck Energy Group Inc | Addison, TX 75001-6025 | Oil & Gas Operator | Apr 2020 |
| 16930 | Leatherwood, LLC | Canonsburg, PA 15317-6506 | Oil & Gas Operator | Dec 2023 |
| 16931 | Leavell Resource | | Oil Operator | Dec 1993 |
| 16932 | Leavell Resources Corporation | Hays, KS 67601 | Oil & Gas Operator | Mar 2015 |
| 16933 | Leben Corp. | Wichita, KS 67202 | Oil & Gas Operator | Dec 2011 |
| 16934 | Leben Drilling I | | Oil & Gas Operator | Dec 1988 |
| 16935 | Leben Oil Corpor | | Oil & Gas Operator | Apr 1991 |
| 16936 | Leben Theodore I | | Oil & Gas Operator | Dec 1995 |
| 16937 | Leboeuf MFG Inc | Waterford, PA 16441-0458 | Gas Operator | Dec 1990 |
| 16938 | Lebosquet Gas Operations, LLC | Wichita, KS 67202 | Gas Operator | Jun 2025 |
| 16939 | Lebosquet John R | | Gas Operator | Dec 1994 |
| 16940 | Lebosquet, John W. | Wichita, KS 67202 | Gas Operator | Jun 2025 |
| 16941 | Lebow, Marvin E. | Tulsa, OK 74135 | Oil & Gas Operator | Jun 1997 |
| 16942 | Lebsack Oil Prod | | Oil & Gas Operator | Nov 1995 |
| 16943 | Lebsack Oil Production Inc. | Stafford, KS 67578 | Oil & Gas Operator | Jun 2025 |
| 16944 | Lebsack, James S. | Denver, CO 80222 | Oil Operator | Sep 1998 |
| 16945 | Lebus Oilfield Service Co | | Oil Operator | Sep 2009 |
| 16946 | Leclair Operating Co., Inc. | Abilene, TX 79602 | Oil & Gas Operator | Dec 2025 |
| 16947 | Leclair Operating, L.L.C. | Abilene, TX 79602 | Oil & Gas Operator | Dec 2025 |
| 16948 | Leclair-Westwood Inc | | Oil & Gas Operator | Mar 1982 |
| 16949 | Led Enterprises | El Dorado, KS 67042 | Oil Operator | Sep 1999 |
| 16950 | Led Enterprises LLC | El Dorado, KS 67042 | Oil Operator | Dec 2009 |
| 16951 | Ledbetter, Jerald D. Estate Of | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2025 |
| 16952 | Ledbetter, Jerald D. Oil Company | Breckenridge, TX 76424 | Oil & Gas Operator | Jan 2007 |
| 16953 | Ledbetter, Morris | Abilene, TX 79605 | Oil & Gas Operator | Jun 2005 |
| 16954 | Ledbetter, O. H. | Albany, TX 76430 | Oil & Gas Operator | Mar 1997 |
| 16955 | Ledford Jan Oil & Gas | Duncan, OK 73533-3210 | Oil Operator | Aug 2025 |
| 16956 | Ledger Operating Corporation | Abilene, TX 79601 | Oil Operator | Dec 2025 |
| 16957 | Lee And Jane Laird | | Oil & Gas Operator | Dec 2002 |
| 16958 | Lee Brothers Oil Co. | Houston, TX 77056 | Oil & Gas Operator | Mar 2008 |
| 16959 | Lee Donna Oil Co | | Oil & Gas Operator | Dec 1996 |
| 16960 | Lee E & M Lee Minter | New Kensington, PA 15068-1440 | Gas Operator | Dec 2003 |
| 16961 | Lee Energy Exploration LTD | Oklahoma City, OK 73102-7114 | Oil & Gas Operator | Jul 2008 |
| 16962 | Lee Energy LLC | Edmond, OK 73034-7668 | Oil Operator | Jan 2005 |
| 16963 | Lee Jr W E | Beggs, OK 74421-2683 | Oil & Gas Operator | May 2013 |
| 16964 | Lee Lamberson Inc. | | Oil & Gas Operator | Dec 2000 |
| 16965 | Lee Lynn MGMT Co | Indiana, PA 15701-3400 | Oil & Gas Operator | Dec 1991 |
| 16966 | Lee M Crane | Bloomfield, NM 87413 | Gas Operator | Sep 2025 |
| 16967 | Lee Mills | | Oil Operator | Feb 1992 |
| 16968 | Lee Of Tulsa Oil & Gas Inc | Tulsa, OK 74114-5634 | Oil & Gas Operator | Dec 2021 |
| 16969 | Lee Phillips Oil Company | | Oil Operator | Jun 2025 |
| 16970 | Lee Production Co. | Monahans, TX 79756 | Oil & Gas Operator | Dec 2025 |
| 16971 | Lee Ron | Emory, TX 75440 | Oil Operator | Jul 2025 |
| 16972 | Lee Roy Daigle | | Oil Operator | Dec 1992 |
| 16973 | Lee'S Summit Gas Co. | | Gas Operator | Dec 1933 |
| 16974 | Lee, R.A., Inc. | | Oil Operator | Nov 1972 |
| 16975 | Leed Energy LLC | Purcell, OK 73080-1383 | Oil & Gas Operator | Aug 2025 |
| 16976 | Leede Oil & Gas Inc. | Greenwood VLG, CO 80111 | Oil & Gas Operator | Aug 2003 |
| 16977 | Leedy Oil Produc | | Oil & Gas Operator | Dec 1995 |
| 16978 | Leedy Oil Producers | | Oil Operator | Nov 2009 |
| 16979 | Leejan Oil Company | Amarillo, TX 79109 | Oil & Gas Operator | Dec 2025 |
| 16980 | Leeman Don J | Oklahoma City, OK 73112 | Oil & Gas Operator | Sep 1998 |
| 16981 | Leeman Energy Co | | Oil & Gas Operator | Jan 1987 |
| 16982 | Leeman Energy Corporation | Oklahoma City, OK 73118-1802 | Oil & Gas Operator | Mar 2015 |
| 16983 | Leeper Oil Exp. & Prod. Inc. | Midland, TX 79701 | Oil & Gas Operator | Sep 2005 |
| 16984 | Lees Petroleum LLC | | Oil & Gas Operator | Jul 2000 |
| 16985 | Leeward Operators LLC | | Oil & Gas Operator | Jul 2011 |
| 16986 | Leexus Oil & Gas L.L.P. | Giddings, TX 78942 | Oil & Gas Operator | Jun 2008 |
| 16987 | Leexus Oil LLC | Giddings, TX 78942 | Oil & Gas Operator | Dec 2025 |
| 16988 | Leexus Operating Company | Austin, TX 78734 | Oil & Gas Operator | Aug 2007 |
| 16989 | Lefco Resources LLC | Henryetta, OK 74437 | Gas Operator | Aug 2025 |
| 16990 | Leffel'S, Inc. | Abilene, TX 79601 | Oil & Gas Operator | Jun 2020 |
| 16991 | Lefforge & Klein | Amarillo, TX 79114 | Gas Operator | Jun 1997 |
| 16992 | Left Behind Recovery, LLC | Luling, TX 78648 | Oil & Gas Operator | Dec 2025 |
| 16993 | Leg Up Operating Company LLC | Tulsa, OK 74135 | Oil Operator | Aug 2025 |
| 16994 | Legacy - M & K Corporation | Dallas, TX 75231-0969 | Oil & Gas Operator | Jan 2025 |
| 16995 | Legacy Acres, LLC | South Dayton, NY 14138 | Gas Operator | Dec 2024 |
| 16996 | Legacy Corporation, The | Cedar Park, TX 78613 | Oil & Gas Operator | Jun 2004 |
| 16997 | Legacy Energy Inc | Carpinteria, CA 93013 | Oil & Gas Operator | Jun 2012 |
| 16998 | Legacy Energy Services | Jourdanton, TX 78026 | Oil Operator | Dec 2025 |
| 16999 | Legacy Energy Services LLC | Stillwater, OK 74074 | Oil & Gas Operator | Sep 2025 |
| 17000 | Legacy Energy, LLC | Russell, KS 67665 | Oil Operator | Jun 2025 |