| 1 | L & L Smith Energy Corporation | | Oil & Gas Operator | Jan 2023 |
| 2 | L E Jones Operating Inc | Duncan, OK 73534 | Oil & Gas Operator | Feb 2024 |
| 3 | Lackey Raymond R | Lindsay, OK 73052 | Oil & Gas Operator | Jun 2015 |
| 4 | Lackey Raymond R & Assoc | | Oil & Gas Operator | Jan 2024 |
| 5 | Ladd Petroleum Corp. | Denver, CO 80202 | Oil & Gas Operator | Oct 2004 |
| 6 | Lake Country Disposal II LLC | | Oil Operator | Jan 2024 |
| 7 | Lake Country Disposal LLC | | Oil Operator | Jan 2024 |
| 8 | Lamamco Drilling Company | Skiatook, OK 74070 | Oil & Gas Operator | Jan 2024 |
| 9 | Lamb Alan L | Oklahoma City, OK 73120-7824 | Oil & Gas Operator | Feb 2020 |
| 10 | Lambdin William H | Oklahoma City, OK 73120 | Oil & Gas Operator | Nov 1998 |
| 11 | Lance Ruffel Oil & Gas LLC | Oklahoma City, OK 73102-5632 | Oil & Gas Operator | Feb 2024 |
| 12 | Lariat Energy & Supply Co Inc | Hulbert, OK 74441-0735 | Oil & Gas Operator | Feb 2024 |
| 13 | Lariat Petroleum Inc | Tulsa, OK 74119 | Oil & Gas Operator | Sep 2023 |
| 14 | Lario Oil & Gas Company | Odessa, TX 79762 | Oil & Gas Operator | Apr 2024 |
| 15 | Last Run, LLC | Rillito, AZ 85246 | Oil & Gas Operator | May 2020 |
| 16 | Latigo Drilling Corporation | Duncan, OK 73534-2150 | Oil & Gas Operator | Feb 2024 |
| 17 | Laurel Operating Company, Inc. | Stillwater, OK 74074-3025 | Oil & Gas Operator | Jan 2024 |
| 18 | Lavrco Energie Inc | Duncan, OK 73533 | Oil & Gas Operator | Jan 2024 |
| 19 | LCB Resources LLC | | Oil & Gas Operator | Feb 2024 |
| 20 | Le Norman Energy Corporation | Duncan, OK 73534 | Oil & Gas Operator | Nov 2014 |
| 21 | Leavell Resources Corporation | Hays, KS 67601 | Oil & Gas Operator | Mar 2015 |
| 22 | Leed Energy LLC | Purcell, OK 73080-1383 | Oil & Gas Operator | Jan 2024 |
| 23 | Leede Oil & Gas Inc. | Greenwood VLG, CO 80111 | Oil & Gas Operator | Aug 2003 |
| 24 | Liberty Operating Inc | Norman, OK 73069-8225 | Oil & Gas Operator | Mar 2022 |
| 25 | Likins-Foster Honolulu Corp | Foster City, CA 94404 | Oil & Gas Operator | Feb 2015 |
| 26 | Lime Rock Resources A, L.P. | Houston, TX 77002 | Oil & Gas Operator | Jan 2024 |
| 27 | Lindenmuth & Associates Inc | Austin, TX 78703 | Oil & Gas Operator | Feb 2024 |
| 28 | Long Resources Inc | San Antonio, TX 78230-2890 | Oil & Gas Operator | Feb 2024 |
| 29 | Lorentz Oil & Gas LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2024 |
| 30 | Louis Dreyfus Gas Marketing | Oklahoma City, OK 73134 | Oil & Gas Operator | Mar 2018 |
| 31 | LRR IV Operating Inc | | Oil & Gas Operator | Jan 2024 |
| 32 | LX4 LLC | | Oil Operator | Jan 2024 |