| 30801 | Wenert Trich Oil | | Oil & Gas Operator | Jul 1990 |
| 30802 | Wenexco, Inc. | Streetman, TX 75859 | Oil & Gas Operator | May 2026 |
| 30803 | Wengerd, Noah A. | Sherman, NY 14781 | Gas Operator | Dec 2024 |
| 30804 | Wenner Petroleum Corp | Englewood, CO 80111 | Oil & Gas Operator | Dec 1986 |
| 30805 | Wentworth Energy, Inc. | Palestine, TX 75801 | Oil & Gas Operator | Jun 2009 |
| 30806 | Wentworth Operating Company | Oklahoma City, OK 73162-1863 | Oil & Gas Operator | Mar 2026 |
| 30807 | Werner Oil Farm | Warren, PA 16365-3608 | Oil & Gas Operator | Dec 2025 |
| 30808 | Werner Oil, Inc. | Borger, TX 79008 | Oil & Gas Operator | Sep 1996 |
| 30809 | Wernette, Louis J. | Hondo, TX 78861 | Oil & Gas Operator | Sep 2023 |
| 30810 | Werth Exploration Trust | | Oil Operator | Dec 2013 |
| 30811 | Wes Oil & Gas LLC | Clarks Mills, PA 16114-1912 | Gas Operator | Dec 2025 |
| 30812 | Wes Pro, Inc. | Jacksboro, TX 76458 | Oil Operator | Jan 2013 |
| 30813 | Wes-Mor Drilling, Inc. | Graham, TX 76450 | Oil & Gas Operator | May 2026 |
| 30814 | Wes-Mor Oil & Gas, Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 1994 |
| 30815 | Wes-Tex Drilling Company | Abilene, TX 79604 | Oil & Gas Operator | Jan 2000 |
| 30816 | Wes-Tex Oil Co. (I) | Bangs, TX 76823 | Oil & Gas Operator | May 2026 |
| 30817 | Wesco Operating Inc | Casper, WY 82602 | Oil & Gas Operator | Apr 2026 |
| 30818 | Wesco Production LLC | | Oil & Gas Operator | Jun 2025 |
| 30819 | Wescor LLC | Hartville, OH 44632 | Oil & Gas Operator | Dec 2025 |
| 30820 | Wesgra Corporation | Mexican Hat, UT 84531 | Oil & Gas Operator | Apr 2026 |
| 30821 | Wesla Oil & Gas Co., Inc. | | Oil & Gas Operator | Jun 2001 |
| 30822 | Wespac Energy, LLC | San Antonio, TX 78217 | Oil & Gas Operator | Dec 2019 |
| 30823 | Wessel Oil And Gas | Cushing, OK 74023-9580 | Oil & Gas Operator | Mar 2015 |
| 30824 | Wessely Energy Company | Dallas, TX 75206 | Oil & Gas Operator | May 2001 |
| 30825 | Wessely Energy Corporation | | Oil & Gas Operator | Feb 1989 |
| 30826 | West 40 Production | Ness City, KS 67560 | Oil Operator | Apr 1998 |
| 30827 | West American Energy Corporation | | Oil & Gas Operator | Mar 2026 |
| 30828 | West Barrytown Services, LLC | Gilbertown, AL 36908 | Oil & Gas Operator | Mar 2020 |
| 30829 | West Bay Exploration Company | Muenster, TX 76252 | Oil & Gas Operator | Mar 2026 |
| 30830 | West Co., The | Wichita Falls, TX 76307 | Oil & Gas Operator | Jun 2016 |
| 30831 | West Coast Oil Company | | Oil Operator | Dec 1996 |
| 30832 | West Coast Operators Inc. | | Oil & Gas Operator | Feb 2026 |
| 30833 | West Delta Oil Co. | | Oil & Gas Operator | Jul 2000 |
| 30834 | West Energy Operating LLC | | Oil & Gas Operator | Mar 2026 |
| 30835 | West Fox SWD LLC | Ratliff City, OK 73481 | Oil Operator | Mar 2026 |
| 30836 | West Gas Inc | | Oil & Gas Operator | Dec 2017 |
| 30837 | West Hopkins Petroleum Co LP | | Oil & Gas Operator | Mar 2026 |
| 30838 | West Inland Energy, Inc. | Fort Worth, TX 76179 | Oil & Gas Operator | Jan 2026 |
| 30839 | West Kansas Oil | | Oil Operator | Jul 1992 |
| 30840 | West Kansas Oil Corporation | Oberlin, KS 67749 | Oil Operator | Aug 1998 |
| 30841 | West Largo Corp | Tulsa, OK 74137 | Oil & Gas Operator | Sep 2023 |
| 30842 | West Mountain Operating Co, Inc. | Longview, TX 75604 | Oil & Gas Operator | Feb 2019 |
| 30843 | West Newport Oil Co. | | Oil & Gas Operator | Dec 2025 |
| 30844 | West Oil Resources, LLC | Bertram, TX 78605 | Oil & Gas Operator | May 2026 |
| 30845 | West Operating Company | Seminole, OK 74868-3851 | Oil & Gas Operator | Mar 2015 |
| 30846 | West Petroleum Corp. | San Antonio, TX 78205 | Oil & Gas Operator | Oct 2009 |
| 30847 | West Plains Enterprises, Inc | Plains, KS 67869 | Oil & Gas Operator | Sep 2022 |
| 30848 | West River Energy LLC | Portville, NY 14770 | Oil & Gas Operator | Dec 2024 |
| 30849 | West Side Exploration, LLC | | Oil & Gas Operator | Jan 2026 |
| 30850 | West Side Rentals | | Oil & Gas Operator | Dec 2025 |
| 30851 | West Sunset Disposal, LLC | Amarillo, TX 79159 | Oil Operator | Oct 2003 |
| 30852 | West Texas Diversified Interests | Eastland, TX 76448 | Oil & Gas Operator | Jun 2006 |
| 30853 | West Texas Exploration Co. | Graham, TX 76450 | Oil & Gas Operator | May 1996 |
| 30854 | West Texas Oil And Gas Corp. | Houston, TX 77056 | Oil & Gas Operator | Feb 2014 |
| 30855 | West Texas Oil And Gas Oper.,Inc | Houston, TX 77046 | Oil & Gas Operator | Jul 2024 |
| 30856 | West Texas Operating Co LLC D/B/A Xtreme Energy Co | Victoria, TX 77902-2326 | Oil & Gas Operator | Jan 2026 |
| 30857 | West Texas Royalties, Inc. | Graham, TX 76450 | Oil & Gas Operator | May 2026 |
| 30858 | West Texas Syndicate LLC. | Corpus Chrsti, TX 78414 | Oil Operator | May 2026 |
| 30859 | West Tuleta Operating Corp. | Tuleta, TX 78162 | Oil & Gas Operator | May 2019 |
| 30860 | West X, Inc. | Hays, KS 67601 | Oil Operator | Aug 1997 |
| 30861 | West,Gordon T.Jr. & Rugeley,Stan | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2019 |
| 30862 | West-States Energy, Inc. | Rimrock, AZ 86335 | Oil Operator | May 2026 |
| 30863 | Westall Oil & Gas Co. | | Oil & Gas Operator | May 1982 |
| 30864 | Westall-Mask | Roswell, NM 88201 | Oil & Gas Operator | Dec 1994 |
| 30865 | Westamerica Corporation | Dewey, OK 74029-0040 | Oil & Gas Operator | Aug 1999 |
| 30866 | Westar Energy, Inc. | Midland, TX 79705 | Oil & Gas Operator | Mar 2008 |
| 30867 | Westar Oil & Minerals | | Oil Operator | Feb 1999 |
| 30868 | Westbrook Oil & Gas Co. Inc. | Gainesville, TX 76240 | Oil & Gas Operator | May 2026 |
| 30869 | Westbrook Oil Corp | Jal, NM 88252 | Oil & Gas Operator | May 2018 |
| 30870 | Westburne Petroleum Inc | | Oil Operator | Jun 1990 |
| 30871 | Westco Oil Company | Ozona, TX 76943 | Oil & Gas Operator | May 2026 |
| 30872 | Westech Energy C | | Oil & Gas Operator | Dec 1996 |
| 30873 | Westech Energy Corporation | Denver, CO 80237 | Oil & Gas Operator | Mar 2011 |
| 30874 | Westend Operating LLC | Collinsville, OK 74021 | Oil Operator | Feb 2026 |
| 30875 | Westerly Exploration, Inc. | Houston, TX 77256 | Oil & Gas Operator | May 2026 |
| 30876 | Western Alliance Petroleum | | Oil & Gas Operator | Dec 1987 |
| 30877 | Western American Resources LLC | Denver, CO 80202 | Oil & Gas Operator | Jun 2024 |
| 30878 | Western Avenue Properties | | Oil & Gas Operator | Dec 1993 |
| 30879 | Western Chief Oil & Gas Company | Graham, TX 76450 | Oil & Gas Operator | Jul 2009 |
| 30880 | Western Chief Operating, L.L.C. | Graham, TX 76450 | Oil & Gas Operator | May 2026 |
| 30881 | Western Continental Operating Company | | Oil & Gas Operator | Dec 2007 |
| 30882 | Western Discovery USA Inc. | | Oil & Gas Operator | Jan 2018 |
| 30883 | Western Disposal Systems, Inc. | Corrales, NM 87048 | Oil Operator | May 2026 |
| 30884 | Western Division Investments Inc | Enid, OK 73701 | Oil & Gas Operator | Jul 2021 |
| 30885 | Western DRLG. Co. | Longview, TX 75604 | Oil & Gas Operator | Nov 1996 |
| 30886 | Western Energy Group, LLC | Leander, TX 78641 | Oil & Gas Operator | May 2026 |
| 30887 | Western Energy Management, Inc. | Austin, TX 78716 | Oil & Gas Operator | Aug 1997 |
| 30888 | Western Engineering, Inc. | | Oil Operator | Dec 1998 |
| 30889 | Western Exploration, Inc. | | Oil Operator | May 1984 |
| 30890 | Western Farmers Electric Coop | Anadarko, OK 73005-0429 | Oil & Gas Operator | Apr 2012 |
| 30891 | Western Field Exploration, Inc. | Dilley, TX 78017 | Oil & Gas Operator | May 2026 |
| 30892 | Western Frontier Adventure, LLC | Easton, KS 66020 | Oil Operator | Dec 2019 |
| 30893 | Western Fuel & S | | Oil Operator | Oct 1987 |
| 30894 | Western Gas Resources Inc | Denver, CO 80202 | Oil & Gas Operator | Sep 2004 |
| 30895 | Western Gas Resources Storage | Northglenn, CO 80234 | Oil & Gas Operator | Jun 1999 |
| 30896 | Western Global Oil, Inc | Deerfld Beach, FL 33442 | Oil Operator | May 2026 |
| 30897 | Western Gulf Oil & Gas Inc. | Dallas, TX 75360 | Oil & Gas Operator | Jul 2000 |
| 30898 | Western Gulf Oil & Gas, LLC | Bishop, TX 78343 | Oil & Gas Operator | May 2026 |
| 30899 | Western Hemisphere Group | Buffalo, NY 14218 | Oil & Gas Operator | Dec 1993 |
| 30900 | Western Interior Energy Inc. | Denver, CO 80202 | Oil & Gas Operator | Dec 2016 |