| 1 | Ladd Petroleum Corp. | Denver, CO 80202 | Oil & Gas Operator | Oct 2004 |
| 2 | Lake Country Disposal II LLC | | Oil Operator | Jan 2024 |
| 3 | Lake Country Disposal LLC | | Oil Operator | Jan 2024 |
| 4 | Lamamco Drilling Company | Skiatook, OK 74070 | Oil & Gas Operator | Dec 2023 |
| 5 | Lariat Petroleum Inc | Tulsa, OK 74119 | Oil & Gas Operator | Sep 2023 |
| 6 | Latigo Petroleum, LLC | Pampa, TX 79066 | Oil & Gas Operator | Apr 2024 |
| 7 | LCB Resources LLC | | Oil & Gas Operator | Jan 2024 |
| 8 | Lear Petroleum Corp | Houston, TX 77210 | Oil & Gas Operator | Mar 2015 |
| 9 | Lear Petroleum Exploration Inc | Dallas, TX 75206 | Oil & Gas Operator | Aug 1999 |
| 10 | Leede Oil & Gas Inc. | Greenwood VLG, CO 80111 | Oil & Gas Operator | Aug 2003 |
| 11 | Likins-Foster Honolulu Corp | Foster City, CA 94404 | Oil & Gas Operator | Feb 2015 |
| 12 | Lime Rock Resources A, L.P. | Houston, TX 77002 | Oil & Gas Operator | Jan 2024 |
| 13 | Lindenmuth & Associates Inc | Austin, TX 78703 | Oil & Gas Operator | Feb 2024 |
| 14 | Lobar Oil Co LLC | Oklahoma City, OK 73116-1516 | Oil & Gas Operator | Dec 2023 |
| 15 | Locators Oil And Gas Inc | Guthrie, OK 73044-0130 | Oil & Gas Operator | Oct 2022 |
| 16 | Lodestone Operating, Inc. | Portland, TX 78374 | Oil & Gas Operator | Apr 2024 |
| 17 | Longview Production Company | Dallas, TX 75243-3795 | Oil & Gas Operator | Feb 2024 |
| 18 | Lorentz Oil & Gas LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 2023 |
| 19 | Louis Dreyfus Gas Marketing | Oklahoma City, OK 73134 | Oil & Gas Operator | Mar 2018 |
| 20 | Louisiana Land & Exploration Co. | Houston, TX 77210 | Oil & Gas Operator | Sep 2013 |
| 21 | LX4 LLC | | Oil Operator | Jan 2024 |