| 1 | L E Jones Operating Inc | Duncan, OK 73534 | Oil & Gas Operator | Sep 2024 |
| 2 | Ladd Petroleum Corp. | Denver, CO 80202 | Oil & Gas Operator | Oct 2004 |
| 3 | Ladder Energy Company | Tulsa, OK 74120-4281 | Oil & Gas Operator | Jan 2018 |
| 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 | Lakeshore Operating, LLC | Wichita, KS 67203 | Oil & Gas Operator | Dec 2024 |
| 7 | Lamamco Drilling Company | Skiatook, OK 74070 | Oil & Gas Operator | Aug 2024 |
| 8 | Lammerts Robert P | Oklahoma City, OK 73102 | Oil & Gas Operator | Jan 2002 |
| 9 | Lancer Energy Corporation | Oklahoma City, OK 73132-5903 | Oil & Gas Operator | May 2015 |
| 10 | Landers & Musgrove | Okemah, OK 74859 | Oil & Gas Operator | Mar 2015 |
| 11 | Landers & Musgrove Oil Co. Inc | Okemah, OK 74859-0266 | Oil & Gas Operator | Jan 2018 |
| 12 | Landers & Waldman Inc | Okemah, OK 74859-0660 | Oil & Gas Operator | May 2013 |
| 13 | Laran Operating LLC | Dover, OK 73734-0057 | Oil & Gas Operator | Mar 2015 |
| 14 | Larkspur Operating LLC | Oklahoma City, OK 73034 | Oil & Gas Operator | Sep 2024 |
| 15 | Las Colinas Oil Corp. | Irving, TX 75062 | Oil & Gas Operator | Mar 2015 |
| 16 | Latigo Oil And Gas Inc | Woodward, OK 73801 | Oil & Gas Operator | Sep 2024 |
| 17 | Lawrence, C. F. & Assoc. Inc. | Lubbock, TX 79401 | Oil & Gas Operator | Dec 2024 |
| 18 | LCB Resources LLC | Kingfisher, OK 73750-2322 | Oil & Gas Operator | Sep 2024 |
| 19 | Le Norman Energy Corporation | Duncan, OK 73534 | Oil & Gas Operator | Nov 2014 |
| 20 | Leeman Don J | Oklahoma City, OK 73112 | Oil & Gas Operator | Sep 1998 |
| 21 | Legacy - M & K Corporation | Dallas, TX 75231-0969 | Oil & Gas Operator | Aug 2024 |
| 22 | Legacy Energy Services LLC | Stillwater, OK 74074 | Oil & Gas Operator | Aug 2024 |
| 23 | Legacy Reserves Operating LP | Denver, CO 80201 | Oil & Gas Operator | Dec 2024 |
| 24 | Lewbet Inc | Perry, OK 73077-8914 | Oil & Gas Operator | Aug 2024 |
| 25 | Limestone Exploration II, LLC | Midland, TX 79704 | Oil & Gas Operator | Jun 2019 |
| 26 | Limestone Productions | Bartlesville, OK 74006-8229 | Oil & Gas Operator | Sep 2013 |
| 27 | Lincoln Ventures LLC | Inola, OK 74036-5035 | Oil & Gas Operator | Sep 2024 |
| 28 | Lindenmuth & Associates Inc | Austin, TX 78703 | Oil & Gas Operator | Aug 2024 |
| 29 | Little Bear Resources LLC | Stillwater, OK 74074-1388 | Oil & Gas Operator | Feb 2013 |
| 30 | Little River Energy Company | Drumright, OK 74030 | Oil & Gas Operator | Sep 2024 |
| 31 | Littrell Chemical Inc | Cleo Springs, OK 73729 | Oil & Gas Operator | Jan 2005 |
| 32 | Litzenberger Exploration Inc | Waynoka, OK 73860 | Oil & Gas Operator | Sep 2024 |
| 33 | Longacre Oil & Gas | Enid, OK 73702 | Oil & Gas Operator | Mar 2013 |
| 34 | Longfellow Energy, LP | Dallas, TX 75225 | Oil & Gas Operator | Dec 2024 |
| 35 | Lorentz Oil & Gas LLC | Edmond, OK 73034-7266 | Oil & Gas Operator | Aug 2024 |
| 36 | Louis Dreyfus Gas Marketing | Oklahoma City, OK 73134 | Oil & Gas Operator | Mar 2018 |
| 37 | Lu-Ray Petroleum LLC | Oklahoma City, OK 73121-1607 | Oil & Gas Operator | Sep 2024 |