| 1 | L And L Production Company | Skellytown, TX 79080 | Oil & Gas Operator | Sep 1996 |
| 2 | Ladd LLC | El Reno, OK 73036 | Oil & Gas Operator | Nov 2018 |
| 3 | Ladd Petroleum Corp. | Denver, CO 80202 | Oil & Gas Operator | Oct 2004 |
| 4 | Lagoon Water Logistics LLC | Oklahoma City, OK 73103 | Oil Operator | Jul 2024 |
| 5 | Laguna Petroleum Corporation | Houston, TX 77046 | Oil & Gas Operator | Dec 2024 |
| 6 | Lamamco Drilling Company | Skiatook, OK 74070 | Oil & Gas Operator | Sep 2024 |
| 7 | Lammerts Robert P | Oklahoma City, OK 73102 | Oil & Gas Operator | Jan 2002 |
| 8 | Lance Ruffel Oil & Gas LLC | Oklahoma City, OK 73102-5632 | Oil & Gas Operator | Oct 2024 |
| 9 | Lariat Petroleum Inc | Tulsa, OK 74119 | Oil & Gas Operator | Sep 2024 |
| 10 | Larkspur Operating LLC | Oklahoma City, OK 73034 | Oil & Gas Operator | Oct 2024 |
| 11 | Latigo Oil And Gas Inc | Woodward, OK 73801 | Oil & Gas Operator | Oct 2024 |
| 12 | LCB Resources LLC | Kingfisher, OK 73750-2322 | Oil & Gas Operator | Sep 2024 |
| 13 | Le Norman Energy Corporation | Duncan, OK 73534 | Oil & Gas Operator | Nov 2014 |
| 14 | Levinson Partners Corporation | Denver, CO 80202 | Oil & Gas Operator | Jul 1995 |
| 15 | Lime Rock Resources II-A, L.P. | Houston, TX 77002 | Oil & Gas Operator | Sep 2024 |
| 16 | Lindenmuth & Associates Inc | Austin, TX 78703 | Oil & Gas Operator | Aug 2024 |
| 17 | Linn Mid-Continent Operating Inc | Houston, TX 77002-3018 | Oil & Gas Operator | Jun 2016 |
| 18 | Lion Petroleum Company | Oklahoma City, OK 73120-4503 | Oil & Gas Operator | Aug 2015 |
| 19 | LMR Oil Company | Wichita, KS 67202 | Oil & Gas Operator | Sep 1998 |
| 20 | Locators Oil And Gas Inc | Guthrie, OK 73044 | Oil & Gas Operator | Oct 2022 |
| 21 | Lone Tree Oil & Gas LLC | Greenwood VLG, CO 80111 | Oil & Gas Operator | Dec 2024 |
| 22 | Lorentz Oil & Gas LLC | Edmond, OK 73034-7266 | Oil & Gas Operator | Sep 2024 |
| 23 | Louis Dreyfus Gas Marketing | Oklahoma City, OK 73134 | Oil & Gas Operator | Mar 2018 |
| 24 | Louisiana Land & Exploration Co. | Houston, TX 77210 | Oil & Gas Operator | Sep 2013 |
| 25 | Lu-Ray Petroleum LLC | Oklahoma City, OK 73121-1607 | Oil & Gas Operator | Oct 2024 |
| 26 | Lynx Energy Company, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Mar 2008 |
| 27 | Lynx Operating Co., Inc. | Dallas, TX 75206 | Oil & Gas Operator | Dec 2024 |