| 1 | Walsh & Watts Inc | Aledo, TX 76008 | Oil & Gas Operator | Nov 2024 |
| 2 | Watchtower Petroleum, LLC | | Oil & Gas Operator | Aug 2024 |
| 3 | Wessely Energy Company | Dallas, TX 75206 | Oil & Gas Operator | May 2001 |
| 4 | Wessely Energy Corporation | | Oil & Gas Operator | Feb 1989 |
| 5 | Wheless Drilling Company | | Oil & Gas Operator | Dec 1989 |
| 6 | Wheless Drilling Company Et Al | | Oil & Gas Operator | Dec 1989 |
| 7 | Wheless Industries, Inc. | Shreveport, LA 71101-5301 | Oil & Gas Operator | Sep 2002 |
| 8 | Wildhorse Resources Management Co, LLC | | Oil & Gas Operator | Feb 2018 |
| 9 | Wildhorse Resources, LLC | Houston, TX 77279 | Oil & Gas Operator | Feb 2015 |
| 10 | Will-Drill Operating, L.L.C. | Shreveport, LA 71105 | Oil & Gas Operator | Nov 2024 |
| 11 | Will-Drill Production Co., Inc. | Shreveport, LA 71105 | Oil & Gas Operator | Nov 2024 |
| 12 | Williamson Oil & Gas, Inc. | Shreveport, LA 71166 | Oil & Gas Operator | Jun 2024 |
| 13 | Willow Springs Production, Inc. | Longview, TX 75606 | Oil & Gas Operator | Sep 1999 |
| 14 | Wintershall Corporation | | Oil & Gas Operator | Oct 1989 |
| 15 | Wynn-Crosby Energy, Inc. | Houston, TX 77002 | Oil & Gas Operator | May 2005 |