| 15901 | L2SG Production, LLC | Nocona, TX 76255 | Oil Operator | May 2020 |
| 15902 | L7 Energy LLC | Seminole, TX 79360 | Oil Operator | Apr 2024 |
| 15903 | La Campana, Inc. | Port Aransas, TX 78373 | Oil & Gas Operator | Apr 2024 |
| 15904 | La Chalk Gathering System | | Oil Operator | Jan 2006 |
| 15905 | La Coastal Pet.Services Co Inc | | Oil & Gas Operator | Dec 1982 |
| 15906 | La Delta Farms Oil Company LLC | | Oil & Gas Operator | Jan 2024 |
| 15907 | La Gas Dev Corp/Araxas | | Oil & Gas Operator | Dec 2001 |
| 15908 | La Honda Fields Limited Partnership | | Oil & Gas Operator | Dec 2021 |
| 15909 | La Intrastate Gas Co LLC | | Oil Operator | Apr 2004 |
| 15910 | La Jolla Oil & Gas, Inc. | Frisco, TX 75034 | Oil & Gas Operator | Apr 2024 |
| 15911 | La Land Co. | | Oil Operator | Dec 1989 |
| 15912 | La Mar, Paul W. | Nocona, TX 76255 | Oil & Gas Operator | May 1995 |
| 15913 | La Mesa Production, Inc. | | Oil & Gas Operator | Apr 2004 |
| 15914 | La Paloma Generating Company LLC | | Oil & Gas Operator | Dec 2000 |
| 15915 | La Parrita Oil & Gas, Inc. | Rosenberg, TX 77471 | Oil & Gas Operator | May 2002 |
| 15916 | La Plata Gathering System Inc | Dallas, TX 75206 | Gas Operator | Nov 2023 |
| 15917 | La Prele Exploration | | Oil & Gas Operator | Oct 1979 |
| 15918 | La Roca Energy, LP | Dallas, TX 75207 | Oil & Gas Operator | Apr 2024 |
| 15919 | La Ronya Oil & Gas | George West, TX 78022 | Gas Operator | Apr 2024 |
| 15920 | La Sara Operating Company, LLC | Houston, TX 77056 | Oil & Gas Operator | Dec 2015 |
| 15921 | La Vernia Oil | La Vernia, TX 78121 | Oil Operator | Apr 2024 |
| 15922 | La Vernia Oil Co. | La Vernia, TX 78121 | Oil & Gas Operator | Aug 2003 |
| 15923 | La Veta Oil & Gas, LLC | Middleburg, VA 20118 | Oil Operator | Dec 2023 |
| 15924 | La VIda Energy Corporation | Midland, TX 79702 | Oil & Gas Operator | Apr 1993 |
| 15925 | La. Fete Oil & Gas, Inc. | | Oil & Gas Operator | May 1995 |
| 15926 | La. Gas Production, L.C. | | Gas Operator | Sep 2018 |
| 15927 | La. Land & Expl. Co. | | Oil & Gas Operator | Dec 2010 |
| 15928 | La. Mining & Minerals, Inc. | | Oil & Gas Operator | Jul 2000 |
| 15929 | La. Nap. Inc. Lanlock Res Inc | | Oil Operator | Feb 1995 |
| 15930 | La. Onshore Properties Inc. | | Oil & Gas Operator | Dec 2000 |
| 15931 | La.-TX. Operating, Inc. | | Oil & Gas Operator | May 1998 |
| 15932 | La.Gas Service Expl. Program | | Gas Operator | Dec 1989 |
| 15933 | Labarge Minerals Inc | Labarge, WY 83123 | Oil & Gas Operator | Jan 2020 |
| 15934 | Labelle Petroleum, Inc. | | Oil & Gas Operator | Oct 1990 |
| 15935 | Laben, David Glenn & Janice W. | Darien Center, NY 14040 | Gas Operator | Dec 2022 |
| 15936 | Labh Hospitality, Inc. | Westfield, NY 14787 | Gas Operator | Dec 2022 |
| 15937 | Labo Oil Company Inc | Drumright, OK 74030-5619 | Oil & Gas Operator | Dec 2023 |
| 15938 | Lace Operating | Fort Worth, TX 76114 | Oil & Gas Operator | Jun 1997 |
| 15939 | Lacen Oil | | Oil Operator | Jan 2002 |
| 15940 | Lachenmayr Oil C | | Oil Operator | Sep 1996 |
| 15941 | Lachenmayr Oil LLC | Newton, KS 67114 | Oil & Gas Operator | Dec 2023 |
| 15942 | Lackawanna City School District | Lackawanna, NY 14218 | Gas Operator | Dec 2022 |
| 15943 | Lackey Danny | Kiefer, OK 74041-0702 | Oil & Gas Operator | Oct 2022 |
| 15944 | Lackey Disposal | | Oil Operator | Jul 1994 |
| 15945 | Lackey Milton | | Oil & Gas Operator | Feb 1995 |
| 15946 | Lackey Raymond R | Lindsay, OK 73052 | Oil & Gas Operator | Jun 2015 |
| 15947 | Lackey Raymond R & Assoc | | Oil & Gas Operator | Dec 2023 |
| 15948 | Lackey WM Oil & Gas Oper Co | Shawnee, OK 74801 | Oil & Gas Operator | Jan 1994 |
| 15949 | Lackey, Donna | Waxahachie, TX 75165 | Oil Operator | Oct 2019 |
| 15950 | Lackey, William H. Oil And Gas | Shawnee, OK 74804 | Oil & Gas Operator | Apr 2024 |
| 15951 | Lacy 03, LLC | Midland, TX 79702 | Oil & Gas Operator | Apr 2024 |
| 15952 | Lacy Operations, LTD. | Longview, TX 75606 | Oil & Gas Operator | Oct 2012 |
| 15953 | Lacy, F. B. Inc. | Houston, TX 77055 | Oil & Gas Operator | Sep 1997 |
| 15954 | Lacy, J. W., Jr. | Midland, TX 79702 | Oil & Gas Operator | Dec 2007 |
| 15955 | Lacy, R | Longview, TX 75606 | Oil Operator | Apr 1989 |
| 15956 | Lacy, R., Inc. | Longview, TX 75606 | Oil & Gas Operator | Jan 2002 |
| 15957 | Ladd & Lukowicz | | Oil & Gas Operator | May 1983 |
| 15958 | Ladd LLC | El Reno, OK 73036-0716 | Oil & Gas Operator | Nov 2018 |
| 15959 | Ladd Oil & Gas Corporation | Midland, TX 79711 | Oil & Gas Operator | Dec 2021 |
| 15960 | Ladd Operating Company | Midland, TX 79711 | Oil & Gas Operator | Mar 2008 |
| 15961 | Ladd Petroleum C | | Oil & Gas Operator | Sep 1989 |
| 15962 | Ladd Petroleum Corp. | Denver, CO 80202 | Oil & Gas Operator | Oct 2004 |
| 15963 | Ladder Energy Company | Tulsa, OK 74120-4281 | Oil & Gas Operator | Jan 2018 |
| 15964 | Laddex, LTD. | Amarillo, TX 79102 | Oil & Gas Operator | Apr 2024 |
| 15965 | Lafayette Oilfield Contractors, Inc. | | Oil Operator | Dec 2023 |
| 15966 | Lafonda Energy LLC | Vernon, TX 76384 | Oil Operator | Apr 2024 |
| 15967 | Lagarto Company, The | Fredericksbrg, TX 78624 | Oil & Gas Operator | Apr 1995 |
| 15968 | Lagerquist, Walter G., Jr. | San Antonio, TX 78209 | Oil & Gas Operator | Sep 2005 |
| 15969 | Lagniappe Interest Inc | Evergreen, CO 80439 | Oil & Gas Operator | Jun 2006 |
| 15970 | Lagniappe Interests, Inc. | | Oil & Gas Operator | Dec 2003 |
| 15971 | Lagniappe Operating, LLC | | Oil Operator | Dec 2023 |
| 15972 | Lagniappe Petrole, LLC | | Oil & Gas Operator | Oct 2023 |
| 15973 | Lago Petroleum Co. | | Oil & Gas Operator | Jan 1992 |
| 15974 | Lagoon Water Logistics LLC | | Oil Operator | Feb 2023 |
| 15975 | Laguna County Sanitation District | | Oil & Gas Operator | Dec 2003 |
| 15976 | Laguna Oil & Gas Corp. | Weesatche, TX 77993 | Oil & Gas Operator | Apr 2024 |
| 15977 | Laguna Petroleum Company | Casper, WY 82601 | Oil & Gas Operator | Dec 1982 |
| 15978 | Laguna Petroleum Corporation | Houston, TX 77046 | Oil & Gas Operator | Apr 2024 |
| 15979 | Lahd Energy Inc | Canton, OH 44709 | Gas Operator | Dec 2009 |
| 15980 | Lahoma Gas Company | | Gas Operator | Dec 1980 |
| 15981 | Lahoma Operating, Inc. | | Oil & Gas Operator | Feb 2024 |
| 15982 | Lahoma Production Inc | Jenks, OK 74037-0487 | Oil & Gas Operator | Nov 2023 |
| 15983 | Lainco Well Service | Hamlin, TX 79520 | Oil & Gas Operator | Dec 1996 |
| 15984 | Lainco Well Service, Inc. | Hamlin, TX 79520 | Oil & Gas Operator | Aug 2011 |
| 15985 | Lainco, Inc. | Hamlin, TX 79520 | Oil & Gas Operator | Apr 2024 |
| 15986 | Laird Anita Louise | Asher, OK 74826-3215 | Oil Operator | Jun 2018 |
| 15987 | Laird Bill Oil Company | St Louis, OK 74866-0120 | Oil & Gas Operator | Jan 2024 |
| 15988 | Lake A, LTD. | | Oil Operator | May 1998 |
| 15989 | Lake Country Disposal II LLC | | Oil Operator | Jan 2024 |
| 15990 | Lake Country Disposal LLC | | Oil Operator | Jan 2024 |
| 15991 | Lake Crystal Operating LLC | Sugar Land, TX 77496 | Oil & Gas Operator | Apr 2024 |
| 15992 | Lake Energy LLC | Chagrin Falls, OH 44023 | Oil & Gas Operator | Dec 2023 |
| 15993 | Lake Erie Energy Part LLC | Erie, PA 16505-4760 | Oil & Gas Operator | Dec 2012 |
| 15994 | Lake Racourci Gath Sys, LLC | | Oil Operator | May 2004 |
| 15995 | Lake Region Oil Inc | Massillon, OH 44648 | Oil & Gas Operator | Dec 2023 |
| 15996 | Lake Ronel Oil Company | Tyler, TX 75710 | Oil & Gas Operator | Nov 2019 |
| 15997 | Lakehills Production, Inc. | Austin, TX 78701 | Oil & Gas Operator | Apr 2024 |
| 15998 | Lakeland Pipeline Inc | Hominy, OK 74035-1006 | Oil & Gas Operator | Jun 2023 |
| 15999 | Lakes And Country Realty LLC | | Oil Operator | Mar 2015 |
| 16000 | Lakeshore Operating, LLC | Wichita, KS 67203 | Oil & Gas Operator | Apr 2024 |