| 16001 | L & W Operators | Pampa, TX 79066 | Oil & Gas Operator | Jan 2018 |
| 16002 | L A Productions | Sunset, TX 76270 | Oil & Gas Operator | Sep 2026 |
| 16003 | L And C Leasing, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Mar 2019 |
| 16004 | L And C Oil Company | | Oil Operator | Aug 1996 |
| 16005 | L And G Drilling | | Oil Operator | Jun 1987 |
| 16006 | L And J Oil Comp | | Oil Operator | Dec 1996 |
| 16007 | L And L Production Company | Skellytown, TX 79080 | Oil & Gas Operator | Sep 1996 |
| 16008 | L B G Operating Co | Fairfax, OK 74037 | Oil & Gas Operator | Oct 2014 |
| 16009 | L B Industries Inc | Englewood, CO 80112 | Oil & Gas Operator | Jun 2003 |
| 16010 | L B Petroleum In | | Oil Operator | Nov 1995 |
| 16011 | L B Simmons Energy Inc | Midland, TX BAD ADDR | Oil & Gas Operator | Oct 1996 |
| 16012 | L D & Associates | Broken Arrow, OK 74014-1712 | Oil Operator | Feb 2012 |
| 16013 | L D O Incorporat | | Oil Operator | Jul 1988 |
| 16014 | L E Carpenter Oil & Gas, Inc. | | Oil & Gas Operator | Sep 1985 |
| 16015 | L E Jones Operating Inc | Duncan, OK 73534 | Oil & Gas Operator | Jul 2026 |
| 16016 | L H Energy Incor | | Oil Operator | Dec 1991 |
| 16017 | L L & H E Kidd | | Gas Operator | Sep 1990 |
| 16018 | L L & M Properties, Inc. | Burkburnett, TX 76354 | Oil & Gas Operator | Aug 2004 |
| 16019 | L P C Energy, Inc. | | Oil & Gas Operator | Mar 1985 |
| 16020 | L P Oil Company Inc. | | Oil & Gas Operator | Feb 2026 |
| 16021 | L R Company | Casper, WY 82602 | Oil & Gas Operator | Sep 2007 |
| 16022 | L R French Jr | Midland, TX 79701 | Oil & Gas Operator | Aug 2014 |
| 16023 | L R Operating Co. | Graford, TX 76449 | Oil & Gas Operator | Jun 2025 |
| 16024 | L V Gas Incorpor | | Oil & Gas Operator | Mar 1991 |
| 16025 | L&DWG LLC | Copeland, KS 67837 | Gas Operator | May 2026 |
| 16026 | L&J Oil, LLC. | Houston, TX 88250 | Oil & Gas Operator | Jan 2026 |
| 16027 | L&L Oil Company LLC | Copan, OK 74022-4608 | Oil Operator | Mar 2014 |
| 16028 | L&M, Inc. | Vienna, WV 26105 | Oil & Gas Operator | Mar 2026 |
| 16029 | L'Oil Operating & Management Co., Inc. | | Oil & Gas Operator | Nov 2024 |
| 16030 | L'Oil Operating And MGMT. Co. | | Oil & Gas Operator | Dec 2008 |
| 16031 | L-83, Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 1995 |
| 16032 | L-K Wireline, Inc. | Hays, KS 67601 | Oil Operator | Dec 2019 |
| 16033 | L-R Production | Olney, TX 76374 | Oil & Gas Operator | Sep 2026 |
| 16034 | L-Reno Oil And Gas LLC | Graford, TX 76449 | Oil & Gas Operator | Sep 2026 |
| 16035 | L-Texx Petroleum, LP | Arlington, TX 76013 | Oil & Gas Operator | Sep 2026 |
| 16036 | L. A. W. Oil, LLC | | Oil Operator | Dec 2024 |
| 16037 | L. A. West | | Gas Operator | Feb 2000 |
| 16038 | L. B. Petroleum, Inc. | Denver, CO 80202 | Gas Operator | Jan 2016 |
| 16039 | L. D. Drilling, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | May 2026 |
| 16040 | L. D. McMullan | | Oil Operator | Jun 2023 |
| 16041 | L. E. Gillespie | | Oil Operator | Sep 1984 |
| 16042 | L. E. Hester | | Gas Operator | Oct 2004 |
| 16043 | L. R. Fitzgerald | | Oil & Gas Operator | Feb 2015 |
| 16044 | L. R. Resources II | | Oil & Gas Operator | Feb 1991 |
| 16045 | L. S. K. L. Oil Co. | Buda, TX 78610 | Oil & Gas Operator | Sep 2026 |
| 16046 | L. W. Babcock | | Oil Operator | Dec 1986 |
| 16047 | L. W. Snuffy McCartney | | Oil Operator | Jul 2015 |
| 16048 | L.C. Coon Production Co. | | Oil Operator | Apr 1995 |
| 16049 | L.C.S. Production Company | Abilene, TX 79608 | Oil & Gas Operator | Sep 2026 |
| 16050 | L.J. Exploration, Inc. | | Oil & Gas Operator | Dec 2020 |
| 16051 | L.J.M. Corporation | Houston, TX 77025 | Oil & Gas Operator | Jun 2012 |
| 16052 | L.K. Energies, Inc. | | Oil & Gas Operator | Dec 2002 |
| 16053 | L.L. Oil Company | Freer, TX 78357 | Oil & Gas Operator | Sep 2026 |
| 16054 | L.L. Tuck | | Oil Operator | Jan 2001 |
| 16055 | L.O.G. Energy Exploration, LTD. | Laredo, TX 78041 | Oil & Gas Operator | Sep 2026 |
| 16056 | L.S.E. Energy-V.P. Smith | | Oil Operator | Mar 1988 |
| 16057 | L.T.D. Explorations Inc. | Alice, TX 78333 | Oil & Gas Operator | Sep 2026 |
| 16058 | L2SG Production, LLC | Nocona, TX 76255 | Oil Operator | May 2020 |
| 16059 | L7 Energy LLC | Wichita Falls, TX 76308 | Oil Operator | Sep 2026 |
| 16060 | La Campana, Inc. | Port Aransas, TX 78373 | Oil & Gas Operator | Sep 2026 |
| 16061 | La Chalk Gathering System | | Oil Operator | Jan 2006 |
| 16062 | La Coastal Pet.Services Co Inc | | Oil & Gas Operator | Dec 1982 |
| 16063 | La Delta Farms Oil Company LLC | | Oil & Gas Operator | Dec 2024 |
| 16064 | La Gas Dev Corp/Araxas | | Oil & Gas Operator | Dec 2001 |
| 16065 | La Honda Fields Limited Partnership | | Oil & Gas Operator | Dec 2021 |
| 16066 | La Intrastate Gas Co LLC | | Oil Operator | Apr 2004 |
| 16067 | La Jolla Oil & Gas, Inc. | Frisco, TX 75034 | Oil & Gas Operator | Sep 2026 |
| 16068 | La Land Co. | | Oil Operator | Dec 1989 |
| 16069 | La Mar, Paul W. | Nocona, TX 76255 | Oil & Gas Operator | May 1995 |
| 16070 | La Mesa Production, Inc. | | Oil & Gas Operator | Apr 2004 |
| 16071 | La Paloma Generating Company LLC | | Oil & Gas Operator | Dec 2000 |
| 16072 | La Parrita Oil & Gas, Inc. | Rosenberg, TX 77471 | Oil & Gas Operator | May 2002 |
| 16073 | La Plata Gathering System Inc | Dallas, TX 75206 | Gas Operator | Nov 2023 |
| 16074 | La Prele Exploration | | Oil & Gas Operator | Oct 1979 |
| 16075 | La Roca Energy, LP | Dallas, TX 75207 | Oil & Gas Operator | May 2024 |
| 16076 | La Ronya Oil & Gas | George West, TX 78022 | Gas Operator | Sep 2026 |
| 16077 | La Sara Operating Company, LLC | Houston, TX 77056 | Oil & Gas Operator | Dec 2015 |
| 16078 | La Vernia Oil | La Vernia, TX 78121 | Oil Operator | Jun 2026 |
| 16079 | La Vernia Oil Co. | La Vernia, TX 78121 | Oil & Gas Operator | Aug 2003 |
| 16080 | La Veta Oil & Gas, LLC | Middleburg, VA 20118 | Oil Operator | May 2026 |
| 16081 | La VIda Energy Corporation | Midland, TX 79702 | Oil & Gas Operator | Apr 1993 |
| 16082 | La. Fete Oil & Gas, Inc. | | Oil & Gas Operator | May 1995 |
| 16083 | La. Gas Production, L.C. | | Gas Operator | Sep 2018 |
| 16084 | La. Land & Expl. Co. | | Oil & Gas Operator | Dec 2010 |
| 16085 | La. Mining & Minerals, Inc. | | Oil & Gas Operator | Jul 2000 |
| 16086 | La. Nap. Inc. Lanlock Res Inc | | Oil Operator | Feb 1995 |
| 16087 | La. Onshore Properties Inc. | | Oil & Gas Operator | Dec 2000 |
| 16088 | La.-TX. Operating, Inc. | | Oil & Gas Operator | May 1998 |
| 16089 | La.Gas Service Expl. Program | | Gas Operator | Dec 1989 |
| 16090 | Labarge Minerals Inc | Labarge, WY 83123 | Oil & Gas Operator | Jan 2020 |
| 16091 | Labelle Petroleum, Inc. | | Oil & Gas Operator | Oct 1990 |
| 16092 | Laben, David Glenn & Janice W. | Darien Center, NY 14040 | Gas Operator | Dec 2025 |
| 16093 | Labh Hospitality, Inc. | Westfield, NY 14787 | Gas Operator | Dec 2025 |
| 16094 | Labo Oil Company Inc | Drumright, OK 74030-5619 | Oil & Gas Operator | Jul 2025 |
| 16095 | Lace Operating | River Oaks, TX 76114 | Oil & Gas Operator | Jun 1997 |
| 16096 | Lacen Oil | | Oil Operator | Jan 2002 |
| 16097 | Lachenmayr Oil C | | Oil Operator | Sep 1996 |
| 16098 | Lachenmayr Oil LLC | Newton, KS 67114 | Oil & Gas Operator | May 2026 |
| 16099 | Lackawanna City School District | Lackawanna, NY 14218 | Gas Operator | Dec 2025 |
| 16100 | Lackey Danny | Kiefer, OK 74041-0702 | Oil & Gas Operator | Oct 2022 |