| 16001 | L & K Oil | | Oil Operator | Oct 1997 |
| 16002 | L & L Energy Company | Huntington, AR 72940 | Oil & Gas Operator | Jan 2025 |
| 16003 | L & L Oil Compan | | Oil Operator | Oct 1984 |
| 16004 | L & L Oil, LLC | Havre, MT 59501-1186 | Oil Operator | Apr 2026 |
| 16005 | L & L Producers | Independence, KS 67301 | Oil Operator | Apr 2026 |
| 16006 | L & L Resources, Inc. | Hays, KS 67601 | Oil Operator | Mar 1986 |
| 16007 | L & L Smith Energy Corporation | Muskogee, OK 74403-8479 | Oil & Gas Operator | Jan 2023 |
| 16008 | L & L Supply | | Oil Operator | Dec 1994 |
| 16009 | L & M Oil Co. | Yates Center, KS 66783 | Oil & Gas Operator | Dec 1998 |
| 16010 | L & M Oil Compan | | Oil & Gas Operator | Dec 1986 |
| 16011 | L & M Operating, Inc. | Big Lake, TX 76932 | Oil & Gas Operator | Aug 2026 |
| 16012 | L & M Petroleum Co | Reno, OH 45773 | Oil & Gas Operator | Dec 1987 |
| 16013 | L & N Co. | | Oil Operator | Jul 1991 |
| 16014 | L & N Exploration Inc | | Oil & Gas Operator | Jul 2013 |
| 16015 | L & P Enterprises, LLC | Paola, KS 66071 | Oil Operator | Apr 2026 |
| 16016 | L & R Drilling Company | Belle Fourche, SD 57717 | Oil & Gas Operator | Dec 1999 |
| 16017 | L & R Energy Corporation | Spearman, TX 79081 | Oil & Gas Operator | Nov 2014 |
| 16018 | L & R Oil Company | Oakley, KS 67748 | Oil & Gas Operator | Jan 2004 |
| 16019 | L & R Oil, Inc. | Great Bend, KS 67530 | Oil Operator | Apr 2026 |
| 16020 | L & R Petroleum | Kilgore, TX 75663 | Oil & Gas Operator | Aug 2026 |
| 16021 | L & S Drilling, Inc. | Kamay, TX 76369 | Oil & Gas Operator | Mar 2016 |
| 16022 | L & S Oil And Gas | Newark, OH 43055-8732 | Oil & Gas Operator | Dec 2014 |
| 16023 | L & S Service Corp. | | Oil Operator | Jul 1989 |
| 16024 | L & T Disposal LLC | Wilson, OK 73463-6545 | Oil Operator | Mar 2016 |
| 16025 | L & T Exploration | | Oil & Gas Operator | Dec 1987 |
| 16026 | L & W Oil & Gas, Inc. | | Oil & Gas Operator | May 1994 |
| 16027 | L & W Operators | Pampa, TX 79066 | Oil & Gas Operator | Jan 2018 |
| 16028 | L A Productions | Sunset, TX 76270 | Oil & Gas Operator | Aug 2026 |
| 16029 | L And C Leasing, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Mar 2019 |
| 16030 | L And C Oil Company | | Oil Operator | Aug 1996 |
| 16031 | L And G Drilling | | Oil Operator | Jun 1987 |
| 16032 | L And J Oil Comp | | Oil Operator | Dec 1996 |
| 16033 | L And L Production Company | Skellytown, TX 79080 | Oil & Gas Operator | Sep 1996 |
| 16034 | L B G Operating Co | Fairfax, OK 74037 | Oil & Gas Operator | Oct 2014 |
| 16035 | L B Industries Inc | Englewood, CO 80112 | Oil & Gas Operator | Jun 2003 |
| 16036 | L B Petroleum In | | Oil Operator | Nov 1995 |
| 16037 | L B Simmons Energy Inc | Midland, TX BAD ADDR | Oil & Gas Operator | Oct 1996 |
| 16038 | L D & Associates | Broken Arrow, OK 74014-1712 | Oil Operator | Feb 2012 |
| 16039 | L D O Incorporat | | Oil Operator | Jul 1988 |
| 16040 | L E Carpenter Oil & Gas, Inc. | | Oil & Gas Operator | Sep 1985 |
| 16041 | L E Jones Operating Inc | Duncan, OK 73534 | Oil & Gas Operator | May 2026 |
| 16042 | L H Energy Incor | | Oil Operator | Dec 1991 |
| 16043 | L L & H E Kidd | | Gas Operator | Sep 1990 |
| 16044 | L L & M Properties, Inc. | Burkburnett, TX 76354 | Oil & Gas Operator | Aug 2004 |
| 16045 | L P C Energy, Inc. | | Oil & Gas Operator | Mar 1985 |
| 16046 | L P Oil Company Inc. | | Oil & Gas Operator | Feb 2026 |
| 16047 | L R Company | Casper, WY 82602 | Oil & Gas Operator | Sep 2007 |
| 16048 | L R French Jr | Midland, TX 79701 | Oil & Gas Operator | Aug 2014 |
| 16049 | L R Operating Co. | Graford, TX 76449 | Oil & Gas Operator | Jun 2025 |
| 16050 | L V Gas Incorpor | | Oil & Gas Operator | Mar 1991 |
| 16051 | L&DWG LLC | Copeland, KS 67837 | Gas Operator | Apr 2026 |
| 16052 | L&L Oil Company LLC | Copan, OK 74022-4608 | Oil Operator | Mar 2014 |
| 16053 | L&M, Inc. | Vienna, WV 26105 | Oil & Gas Operator | Mar 2026 |
| 16054 | L'Oil Operating & Management Co., Inc. | | Oil & Gas Operator | Nov 2024 |
| 16055 | L'Oil Operating And MGMT. Co. | | Oil & Gas Operator | Dec 2008 |
| 16056 | L-83, Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 1995 |
| 16057 | L-K Wireline, Inc. | Hays, KS 67601 | Oil Operator | Dec 2019 |
| 16058 | L-R Production | Olney, TX 76374 | Oil & Gas Operator | Aug 2026 |
| 16059 | L-Reno Oil And Gas LLC | Graford, TX 76449 | Oil & Gas Operator | Aug 2026 |
| 16060 | L-Texx Petroleum, LP | Arlington, TX 76013 | Oil & Gas Operator | Aug 2026 |
| 16061 | L. A. W. Oil, LLC | | Oil Operator | Dec 2024 |
| 16062 | L. A. West | | Gas Operator | Feb 2000 |
| 16063 | L. B. Petroleum, Inc. | Denver, CO 80202 | Gas Operator | Jan 2016 |
| 16064 | L. D. Drilling, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Apr 2026 |
| 16065 | L. D. McMullan | | Oil Operator | Jun 2023 |
| 16066 | L. E. Gillespie | | Oil Operator | Sep 1984 |
| 16067 | L. E. Hester | | Gas Operator | Oct 2004 |
| 16068 | L. R. Fitzgerald | | Oil & Gas Operator | Feb 2015 |
| 16069 | L. R. Resources II | | Oil & Gas Operator | Feb 1991 |
| 16070 | L. S. K. L. Oil Co. | Buda, TX 78610 | Oil & Gas Operator | Aug 2026 |
| 16071 | L. W. Babcock | | Oil Operator | Dec 1986 |
| 16072 | L. W. Snuffy McCartney | | Oil Operator | Jul 2015 |
| 16073 | L.C. Coon Production Co. | | Oil Operator | Apr 1995 |
| 16074 | L.C.S. Production Company | Abilene, TX 79608 | Oil & Gas Operator | Aug 2026 |
| 16075 | L.J. Exploration, Inc. | | Oil & Gas Operator | Dec 2020 |
| 16076 | L.J. Resources, LLC | Graham, TX 76450 | Gas Operator | Feb 2026 |
| 16077 | L.J.M. Corporation | Houston, TX 77025 | Oil & Gas Operator | Jun 2012 |
| 16078 | L.K. Energies, Inc. | | Oil & Gas Operator | Dec 2002 |
| 16079 | L.L. Oil Company | Freer, TX 78357 | Oil & Gas Operator | Aug 2026 |
| 16080 | L.L. Tuck | | Oil Operator | Jan 2001 |
| 16081 | L.O.G. Energy Exploration, LTD. | Laredo, TX 78041 | Oil & Gas Operator | Aug 2026 |
| 16082 | L.S.E. Energy-V.P. Smith | | Oil Operator | Mar 1988 |
| 16083 | L.T.D. Explorations Inc. | Alice, TX 78333 | Oil & Gas Operator | Aug 2026 |
| 16084 | L2SG Production, LLC | Nocona, TX 76255 | Oil Operator | May 2020 |
| 16085 | L7 Energy LLC | Wichita Falls, TX 76308 | Oil Operator | Aug 2026 |
| 16086 | La Campana, Inc. | Port Aransas, TX 78373 | Oil & Gas Operator | Aug 2026 |
| 16087 | La Chalk Gathering System | | Oil Operator | Jan 2006 |
| 16088 | La Coastal Pet.Services Co Inc | | Oil & Gas Operator | Dec 1982 |
| 16089 | La Delta Farms Oil Company LLC | | Oil & Gas Operator | Dec 2024 |
| 16090 | La Gas Dev Corp/Araxas | | Oil & Gas Operator | Dec 2001 |
| 16091 | La Honda Fields Limited Partnership | | Oil & Gas Operator | Dec 2021 |
| 16092 | La Intrastate Gas Co LLC | | Oil Operator | Apr 2004 |
| 16093 | La Jolla Oil & Gas, Inc. | Frisco, TX 75034 | Oil & Gas Operator | Aug 2026 |
| 16094 | La Land Co. | | Oil Operator | Dec 1989 |
| 16095 | La Mar, Paul W. | Nocona, TX 76255 | Oil & Gas Operator | May 1995 |
| 16096 | La Mesa Production, Inc. | | Oil & Gas Operator | Apr 2004 |
| 16097 | La Paloma Generating Company LLC | | Oil & Gas Operator | Dec 2000 |
| 16098 | La Parrita Oil & Gas, Inc. | Rosenberg, TX 77471 | Oil & Gas Operator | May 2002 |
| 16099 | La Plata Gathering System Inc | Dallas, TX 75206 | Gas Operator | Nov 2023 |
| 16100 | La Prele Exploration | | Oil & Gas Operator | Oct 1979 |