| 17001 | Leonard, Patricia Anne | San Antonio, TX 78209 | Oil & Gas Operator | Oct 1996 |
| 17002 | Leone, Thomas E. | Elma, NY 14059 | Gas Operator | Dec 2023 |
| 17003 | Leopard, Glenn | Malakoff, TX 75148 | Oil & Gas Operator | Aug 2003 |
| 17004 | Leopoldo P Bustamante | Midland, TX 79710 | Oil & Gas Operator | Apr 2012 |
| 17005 | Leor Energy Indigo L.P. | Houston, TX 77079 | Gas Operator | Oct 2017 |
| 17006 | Lep Development Company, LLC | Houston, TX 77007 | Oil & Gas Operator | Jul 2020 |
| 17007 | Lepp, Paul N. | Cherry Creek, NY 14723 | Gas Operator | Dec 2023 |
| 17008 | Lera | Borger, TX 79007 | Oil & Gas Operator | Jun 2025 |
| 17009 | Lerblance Jr W P Estate | Hartshorne, OK 74547-0449 | Oil & Gas Operator | Apr 2020 |
| 17010 | Leroy Holt Oil Operations | | Oil Operator | Mar 2010 |
| 17011 | Leroy Oil Co. | Gainesville, TX 76240 | Oil & Gas Operator | Jun 2002 |
| 17012 | Leroy W. James | | Oil & Gas Operator | Oct 1991 |
| 17013 | Les Miller | | Oil & Gas Operator | Dec 1991 |
| 17014 | Lesco Corp. | | Oil Operator | Dec 2000 |
| 17015 | Leshen Energy USA LLC | | Oil Operator | Jan 2025 |
| 17016 | Lesikar, L. W. | Fort Worth, TX 76121 | Oil & Gas Operator | Jun 2006 |
| 17017 | Leslie Oil & Gas Co Inc | Zanesville, OH 43701 | Oil & Gas Operator | Dec 1991 |
| 17018 | Lester Joan | Sand Springs, OK 74063 | Oil & Gas Operator | Feb 2025 |
| 17019 | Lester L Moyer | Cooperstown, PA 16317-2917 | Gas Operator | Dec 2009 |
| 17020 | Letog LLC | Orwell, OH 44076 | Oil & Gas Operator | Dec 2024 |
| 17021 | Letwin & Kallison | Fort Worth, TX 76107 | Oil & Gas Operator | Jun 2004 |
| 17022 | Lety Oil Co. | Luling, TX 78648 | Oil & Gas Operator | Aug 2002 |
| 17023 | Levant Energy LLC | Milton, MA 02186 | Oil Operator | Jun 2025 |
| 17024 | Levee Oil LLC | Tuscola, TX 79562 | Oil Operator | Jun 2025 |
| 17025 | Levengood Oil & Gas(Us)In | Dover, OH 44621-2900-2900 | Oil & Gas Operator | Dec 1997 |
| 17026 | Levens, C. H. | Water Valley, TX 76958 | Oil & Gas Operator | May 2010 |
| 17027 | Leverage Operating, LLC | San Antonio, TX 78257 | Oil & Gas Operator | Dec 2021 |
| 17028 | Levi Oil Company | Wichita, KS 67218 | Oil & Gas Operator | Nov 1993 |
| 17029 | Levinson Partners Corporation | Denver, CO 80202 | Oil & Gas Operator | Jul 1995 |
| 17030 | Levinson Silvan E | Tulsa, OK 74119 | Oil & Gas Operator | Feb 2012 |
| 17031 | Levisay Operating Co. | Brownwood, TX 76801 | Oil & Gas Operator | Jun 2025 |
| 17032 | Lewbet Inc | Perry, OK 73077 | Oil & Gas Operator | Aug 2024 |
| 17033 | Lewis & Clark Exploration | | Oil Operator | Feb 1989 |
| 17034 | Lewis & Clark Exploration Company | | Oil Operator | Jan 2005 |
| 17035 | Lewis & Hays | Albany, TX 76430 | Oil & Gas Operator | Feb 2002 |
| 17036 | Lewis & Manziel | | Oil Operator | Apr 1989 |
| 17037 | Lewis A Hembree Production Co | Shawnee, OK 74801 | Oil & Gas Operator | Feb 2025 |
| 17038 | Lewis Energy LLC | Tulsa, OK 74159 | Oil Operator | Feb 2025 |
| 17039 | Lewis Heirs 480, LLC | Bryson, TX 76427 | Oil & Gas Operator | Jun 2025 |
| 17040 | Lewis J K | Duncan, OK 73534-1742 | Oil & Gas Operator | Apr 2015 |
| 17041 | Lewis James D Oil Company | Healdton, OK 73438 | Oil Operator | Jan 2025 |
| 17042 | Lewis John L Well Service | Sasakwa, OK 74867 | Oil Operator | May 2013 |
| 17043 | Lewis Oil & Gas Of Galva, Inc. | Galva, KS 67443 | Oil Operator | Feb 2025 |
| 17044 | Lewis Oil And Gas, Inc. | Midland, TX 79710 | Oil & Gas Operator | Apr 2023 |
| 17045 | Lewis Oil Corp. | Stillwater, OK 74076 | Oil & Gas Operator | Feb 2025 |
| 17046 | Lewis Oil Operations LLC | Ratliff City, OK 73481 | Oil & Gas Operator | Feb 2025 |
| 17047 | Lewis Operating Company | Holliday, TX 76366 | Oil & Gas Operator | Jun 2025 |
| 17048 | Lewis Petro Properties, Inc. | San Antonio, TX 78216 | Oil & Gas Operator | Jun 2025 |
| 17049 | Lewis Resources Inc | Tulsa, OK 74103 | Oil & Gas Operator | Jul 1995 |
| 17050 | Lewis Williams | | Oil & Gas Operator | Feb 1991 |
| 17051 | Lewis Yale H | | Oil & Gas Operator | Aug 1986 |
| 17052 | Lewis, Bryan | Andover, NY 14806 | Oil & Gas Operator | Dec 2023 |
| 17053 | Lewis, Freddie | | Oil Operator | Dec 2023 |
| 17054 | Lewis, James B. Land & Oil Co. | Midland, TX 79702 | Oil & Gas Operator | Nov 1998 |
| 17055 | Lewis, Larry, Lyle And Paul | Rexville, NY 14877 | Gas Operator | Dec 2023 |
| 17056 | Lewis, R. J. Oil Company | Stillwater, OK 74076 | Oil & Gas Operator | Apr 2014 |
| 17057 | Lewis, T. K. | Horseshoe Bay, TX 78657 | Oil & Gas Operator | Jun 2025 |
| 17058 | Lewis, William T. | Graham, TX 76450 | Oil & Gas Operator | Mar 2008 |
| 17059 | Lex And Lace Petroleum, LLC | Houston, TX 77269 | Oil Operator | Jun 2025 |
| 17060 | Lexgas, Inc. | Roanoke, TX 76262 | Oil & Gas Operator | Jun 2025 |
| 17061 | Lexico Exploration | | Oil Operator | Mar 1986 |
| 17062 | Lexicon Resources Corporation | | Oil & Gas Operator | Apr 1986 |
| 17063 | Lexus Gas Corporation | Roanoke, TX 76262 | Oil & Gas Operator | Jul 2005 |
| 17064 | LG&S Oil Company, LLC | Lovington, NM 88260 | Oil Operator | Mar 2025 |
| 17065 | LGDC Corporation | Shreveport, LA 71101 | Oil & Gas Operator | Jun 2025 |
| 17066 | LGS Exploration Program | | Gas Operator | Jul 1990 |
| 17067 | LGS Exploration, Inc. | | Oil & Gas Operator | Jan 1991 |
| 17068 | LH Oil, LLC | Ottawa, KS 66067 | Oil Operator | Feb 2025 |
| 17069 | LH Operating, LLC | Fulshear, TX 77441 | Oil & Gas Operator | Mar 2025 |
| 17070 | LHC Petroleum Corporation | | Oil & Gas Operator | Jul 2001 |
| 17071 | Li'L Sugar Oil Company | | Oil Operator | Nov 2019 |
| 17072 | Libertad Operating LLC | Midland, TX 79705 | Oil & Gas Operator | Jun 2025 |
| 17073 | Liberty Enterpri | | Oil Operator | Jan 1987 |
| 17074 | Liberty Exploration Co. | | Oil Operator | Apr 1987 |
| 17075 | Liberty Head Petroleum, Inc. | San Antonio, TX 78229 | Oil & Gas Operator | Sep 2017 |
| 17076 | Liberty National Corp | Dallas, TX 75206 | Oil Operator | Dec 2006 |
| 17077 | Liberty Oil & Gas Co., Inc. | | Oil Operator | Feb 1991 |
| 17078 | Liberty Oil And Gas Corp. | Olney, IL 62450-2489-2489 | Oil & Gas Operator | Dec 2021 |
| 17079 | Liberty Oper & Compl, Inc | Plainville, KS 67663 | Oil & Gas Operator | Dec 2022 |
| 17080 | Liberty Operating Company, Inc. | Lake Dallas, TX 75065 | Oil & Gas Operator | Mar 2008 |
| 17081 | Liberty Operating Company,LLC | | Oil & Gas Operator | Feb 2025 |
| 17082 | Liberty Operating Inc | Norman, OK 73069-8225 | Oil & Gas Operator | Dec 2024 |
| 17083 | Liberty Operations & Completion, Inc | Plainville, KS 67663 | Oil Operator | Dec 2024 |
| 17084 | Liberty Pioneer Energy Source, Inc | Provo, UT 84604 | Oil & Gas Operator | Oct 2021 |
| 17085 | Liberty Production Co | Houston, TX 77002 | Oil & Gas Operator | Nov 1994 |
| 17086 | Liberty Resources Co. | Big Lake, TX 76932 | Oil & Gas Operator | Mar 1994 |
| 17087 | Liberty Resources LLC | | Oil & Gas Operator | May 2014 |
| 17088 | Liberty Resources Management Co LLC | Denver, CO 80202 | Oil & Gas Operator | Apr 2025 |
| 17089 | Liberty Resources, Inc. | | Oil & Gas Operator | Dec 2024 |
| 17090 | Liberty Southern Energy LLC | | Oil & Gas Operator | Jan 2014 |
| 17091 | Liboc, Inc. | New York, NY 10110 | Oil & Gas Operator | Dec 2009 |
| 17092 | Libom Oil Company | Elmsford, NY 10523 | Oil & Gas Operator | Aug 2003 |
| 17093 | Libra Oil Co., Inc. | | Oil & Gas Operator | Nov 1986 |
| 17094 | Licking Valley Construction Co., Inc. | | Oil & Gas Operator | Dec 2016 |
| 17095 | Liedtke Operating Corporation | Denver, CO 80202 | Oil & Gas Operator | Dec 2022 |
| 17096 | Lif-Tex Oil Recovery, Inc. | Luling, TX 78648 | Oil Operator | Jun 2025 |
| 17097 | Light Resources | San Antonio, TX 78278 | Oil & Gas Operator | Aug 2013 |
| 17098 | Lighthizer Charles O | Zanesville, OH 43701 | Oil & Gas Operator | Dec 1997 |
| 17099 | Lighthouse Exploration, Inc. | Corpus Chrsti, TX 78473 | Oil & Gas Operator | Jul 2007 |
| 17100 | Lighthouse Operating, Inc. | Corpus Chrsti, TX 78410 | Oil & Gas Operator | Jun 2021 |