| 1 | W M Smith | | Oil Operator | Jun 1989 |
| 2 | W&T Offshore, Inc. | Houston, TX 77057 | Oil & Gas Operator | Feb 2026 |
| 3 | W. B. Inabnet | | Gas Operator | Oct 1985 |
| 4 | W. D. Roberson | | Gas Operator | Mar 2021 |
| 5 | W. J. Wegman, Jr. | | Gas Operator | Dec 1991 |
| 6 | Walker Energy, LLC | | Oil & Gas Operator | Nov 2024 |
| 7 | Watchtower Petroleum, LLC | | Oil & Gas Operator | Jun 2025 |
| 8 | Weiser-Brown Operating Company | Magnolia, AR 71754 | Oil & Gas Operator | Feb 2026 |
| 9 | Wells-Battelstein O&G, Inc. | | Gas Operator | Dec 1986 |
| 10 | White Operating Co., L.L.C. | | Oil & Gas Operator | Oct 2019 |
| 11 | Will-Drill Operating, L.L.C. | Shreveport, LA 71105 | Oil & Gas Operator | Feb 2026 |
| 12 | Will-Drill Production Co., Inc. | Shreveport, LA 71105 | Oil & Gas Operator | Feb 2026 |
| 13 | William E. Daniels | | Gas Operator | Dec 2013 |
| 14 | Windsor Gas Corporation | | Oil & Gas Operator | Aug 1989 |
| 15 | Womack & Nelson | | Gas Operator | Feb 1987 |
| 16 | Woods & Deas | | Oil & Gas Operator | Jan 1984 |
| 17 | Woods Operating Co., Inc. | Shreveport, LA 71136 | Oil & Gas Operator | Dec 2020 |