| 1 | W & W Oil, Inc. | Lovington, NM 88260 | Oil & Gas Operator | May 1999 |
| 2 | W A Moncrief Jr | Fort Worth, TX 76102 | Oil & Gas Operator | Sep 2025 |
| 3 | W B Yarborough | Hobbs, NM 88241 | Oil & Gas Operator | Nov 1995 |
| 4 | W H Brininstool | Jal, NM 88252 | Oil & Gas Operator | Aug 2006 |
| 5 | W R Ericksen | Hobbs, NM 882411109 | Oil & Gas Operator | Jul 1994 |
| 6 | Wadi Petroleum Inc | Houston, TX 77014 | Oil & Gas Operator | May 2018 |
| 7 | Wagner & Brown, LTD. | Midland, TX 79702 | Oil & Gas Operator | Aug 2014 |
| 8 | Wagner Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2025 |
| 9 | Wallen Production Co. | Midland, TX 79702 | Oil & Gas Operator | Aug 1996 |
| 10 | Walsh & Watts Inc | Aledo, TX 76008 | Oil & Gas Operator | Nov 2025 |
| 11 | Walton Properties LTD. | Midland, TX 79702 | Oil & Gas Operator | Feb 2004 |
| 12 | Warren American Oil Co | Tulsa, OK 74147 | Oil & Gas Operator | Aug 2025 |
| 13 | Warren E & P Inc | Dallas, TX 75240 | Oil & Gas Operator | Sep 2025 |
| 14 | Warrior Inc | Hobbs, NM 88241 | Oil & Gas Operator | Feb 1998 |
| 15 | Waylander LLC | Plano, TX 75025 | Oil & Gas Operator | Nov 2025 |
| 16 | Westbrook Oil Corp | Jal, NM 88252 | Oil & Gas Operator | May 2018 |
| 17 | Westerly Exploration, Inc. | Houston, TX 77256 | Oil & Gas Operator | Nov 2025 |
| 18 | Western Oil Producers Inc | Roswell, NM 88202 | Oil & Gas Operator | Jul 2005 |
| 19 | Western Reserves Oil Co Inc | Midland, TX 79705 | Oil & Gas Operator | Oct 2020 |
| 20 | Westland Oil Development Corp. | Conroe, TX 77305 | Oil & Gas Operator | Mar 2008 |
| 21 | Weststar Exploration Co | Houston, TX 77027 | Oil & Gas Operator | Oct 2025 |
| 22 | White Rock Oil & Gas, LLC | Plano, TX 75024 | Oil & Gas Operator | Nov 2025 |
| 23 | Whiting Oil And Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Nov 2025 |
| 24 | Wildcat Energy, LLC | Odessa, TX 79768 | Oil & Gas Operator | Jul 2021 |
| 25 | Will McCasland Ind | Hobbs, NM 88240 | Gas Operator | Feb 2008 |
| 26 | William C Bahlburg | Dallas, TX 75240 | Oil & Gas Operator | Dec 1994 |
| 27 | Willow Creek Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Feb 2009 |
| 28 | Wiser Oil Co | Denver, CO 80202 | Oil & Gas Operator | Dec 2023 |
| 29 | Wishbone Texas Operating Co LLC | Houston, TX 77064 | Oil & Gas Operator | Jul 2019 |
| 30 | WJC, Inc. | Post, TX 79356 | Oil & Gas Operator | Nov 2025 |
| 31 | Wood, McShane & Thams | Midland, TX 79702 | Oil & Gas Operator | Oct 1995 |
| 32 | Woodbine Petroleum, Inc. | Dallas, TX 75204 | Oil & Gas Operator | Aug 2003 |
| 33 | WPX Energy Permian, LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Nov 2025 |
| 34 | Wti 1993 LTD | FT. Collins, CO 80526 | Oil & Gas Operator | Apr 1995 |
| 35 | Wyatt Permian, LLC | Corpus Chrsti, TX 78426 | Oil & Gas Operator | Nov 2025 |
| 36 | Wynn-Crosby Operating LP | Dallas, TX 75201 | Oil & Gas Operator | Jul 2025 |