| 1 | Q T Oil LTD Co | Shawnee, OK 74801 | Oil Operator | Aug 2025 |
| 2 | Qep Energy Company | Midland, TX 79701 | Oil & Gas Operator | Aug 2025 |
| 3 | Quad J Oil & Gas LLC | Crescent, OK 73028 | Oil & Gas Operator | Sep 2025 |
| 4 | Quad Operating Company | Bulverde, TX 78163 | Oil & Gas Operator | Aug 2025 |
| 5 | Quail Creek Oil Corporation | Houston, TX 77024 | Oil & Gas Operator | Dec 2025 |
| 6 | Quail Creek Petro MGMT Corp | Oklahoma City, OK 73134 | Oil & Gas Operator | Aug 2013 |
| 7 | Quail Oil & Gas LC | Garden City, KS 67846 | Oil & Gas Operator | Sep 2025 |
| 8 | Quality Production Co Of Stigler Inc | Stigler, OK 74462-0635 | Gas Operator | Feb 2013 |
| 9 | Quanah Company | Tulsa, OK 74159-0469 | Oil & Gas Operator | May 2020 |
| 10 | Quantum Oil & Gas Corporation | Oklahoma City, OK 73172 | Oil & Gas Operator | Dec 2025 |
| 11 | Quantum Resources Management LLC | Houston, TX 77010 | Oil & Gas Operator | Aug 2025 |
| 12 | Quarles Drilling Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Feb 2008 |
| 13 | Quatro Oil And Gas, Inc. | Joshua, TX 76058 | Oil & Gas Operator | Dec 2025 |
| 14 | Quench Oil & Gas Inc | Plano, TX 75075-2902 | Oil & Gas Operator | Apr 2009 |
| 15 | Quest Cherokee LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Jun 2025 |
| 16 | Quest Property Inc | Yukon, OK 73099 | Oil & Gas Operator | Jul 2025 |
| 17 | Questa Energy Corporation | Amarillo, TX 79159 | Oil & Gas Operator | Dec 2025 |
| 18 | Questa Oil & Gas Co. | Tulsa, OK 74170 | Oil & Gas Operator | Mar 2015 |
| 19 | Questar Explor & Prod Co | Tulsa, OK 74136 | Oil & Gas Operator | Jan 2017 |
| 20 | Quick Draw Tank Trucks Inc | Lamont, OK 74643-0158 | Oil Operator | Oct 1997 |
| 21 | Quinn Energy Corp | MT Vernon, IN 47620 | Oil & Gas Operator | Oct 1999 |
| 22 | Quinque Operating Company | Liberal, KS 67905 | Oil & Gas Operator | Jun 2025 |
| 23 | Quintana Pet Okla Inc | Houston, TX 77002 | Oil & Gas Operator | Jun 1998 |
| 24 | Quinton Rental & Repair Serv Inc | Quinton, OK 74561-0432 | Oil & Gas Operator | Mar 2015 |
| 25 | Quorum Lease Bank | Dallas, TX 75240 | Oil Operator | Jun 1996 |