| 1 | B & W Operating, L.L.C. | Nichols Hill, OK 73116 | Oil & Gas Operator | Mar 2025 |
| 2 | Chesapeake Operating LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | May 2025 |
| 3 | Cimarex Energy Co. Of Colorado | Midland, TX 79706 | Oil & Gas Operator | May 2025 |
| 4 | Cimarron Operating Company | Oklahoma City, OK 73112-3967 | Oil & Gas Operator | May 2011 |
| 5 | Continental Exploration LLC | Lufkin, TX 75915 | Oil & Gas Operator | May 2025 |
| 6 | Husky Ventures Inc | Oklahoma City, OK 73134 | Oil & Gas Operator | Feb 2025 |
| 7 | Kodiak Oil & Gas Inc | Muenster, TX 76252 | Oil & Gas Operator | May 2025 |
| 8 | Kolibri Energy Us, Inc. | Thousand Oaks, CA 91320-1272 | Oil & Gas Operator | Feb 2025 |
| 9 | Natural Gas Pipeline Co Of Am LLC | Downers Grove, IL 60515-3708 | Oil & Gas Operator | Mar 2015 |
| 10 | Newkumet Exploration, Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 2020 |
| 11 | O'Neal Oil & Gas Co | Fort Worth, TX 76107-1479 | Oil & Gas Operator | Mar 2025 |
| 12 | The Quintin Little Company Inc | Ardmore, OK 73401 | Oil & Gas Operator | Mar 2025 |
| 13 | Trinity Oil & Gas Producers LLC | Allen, OK 74825 | Oil & Gas Operator | Feb 2025 |
| 14 | Tripledee Drilling Co Inc | Ardmore, OK 73402-1888 | Oil & Gas Operator | Dec 2015 |
| 15 | Tripledee Operating Company LLC | Ardmore, OK 73401 | Oil & Gas Operator | Nov 2022 |
| 16 | Union Oil Co Of California | Midland, TX 79706 | Oil & Gas Operator | Jan 2022 |
| 17 | Wagner & Brown LP | Midland, TX 79702-1714 | Oil & Gas Operator | Aug 2022 |
| 18 | Walter Oil & Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | May 2025 |
| 19 | Western Oil Company | Midland, TX 79702 | Oil & Gas Operator | Jul 2014 |
| 20 | XTO Energy Inc. | Spring, TX 77389 | Oil & Gas Operator | May 2025 |