| 31001 | West Side Exploration, LLC | | Oil & Gas Operator | Aug 2025 |
| 31002 | West Side Rentals | | Oil & Gas Operator | Dec 2025 |
| 31003 | West Sunset Disposal, LLC | Amarillo, TX 79159 | Oil Operator | Oct 2003 |
| 31004 | West Texas Diversified Interests | Eastland, TX 76448 | Oil & Gas Operator | Jun 2006 |
| 31005 | West Texas Exploration Co. | Graham, TX 76450 | Oil & Gas Operator | May 1996 |
| 31006 | West Texas Oil And Gas Corp. | Houston, TX 77056 | Oil & Gas Operator | Feb 2014 |
| 31007 | West Texas Oil And Gas Oper.,Inc | Houston, TX 77046 | Oil & Gas Operator | Jul 2024 |
| 31008 | West Texas Operating Co LLC D/B/A Xtreme Energy Co | Victoria, TX 77902-2326 | Oil & Gas Operator | Dec 2025 |
| 31009 | West Texas Royalties, Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 2026 |
| 31010 | West Texas Syndicate LLC. | Corpus Chrsti, TX 78414 | Oil Operator | Apr 2026 |
| 31011 | West Tuleta Operating Corp. | Tuleta, TX 78162 | Oil & Gas Operator | May 2019 |
| 31012 | West X, Inc. | Hays, KS 67601 | Oil Operator | Aug 1997 |
| 31013 | West,Gordon T.Jr. & Rugeley,Stan | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2019 |
| 31014 | West-States Energy, Inc. | Rimrock, AZ 86335 | Oil Operator | Apr 2026 |
| 31015 | Westall Oil & Gas Co. | | Oil & Gas Operator | May 1982 |
| 31016 | Westall-Mask | Roswell, NM 88201 | Oil & Gas Operator | Dec 1994 |
| 31017 | Westamerica Corporation | Dewey, OK 74029-0040 | Oil & Gas Operator | Aug 1999 |
| 31018 | Westar Energy, Inc. | Midland, TX 79705 | Oil & Gas Operator | Mar 2008 |
| 31019 | Westar Oil & Minerals | | Oil Operator | Feb 1999 |
| 31020 | Westbrook Oil & Gas Co. Inc. | Gainesville, TX 76240 | Oil & Gas Operator | Apr 2026 |
| 31021 | Westbrook Oil Corp | Jal, NM 88252 | Oil & Gas Operator | May 2018 |
| 31022 | Westburne Petroleum Inc | | Oil Operator | Jun 1990 |
| 31023 | Westco Oil Company | Ozona, TX 76943 | Oil & Gas Operator | Apr 2026 |
| 31024 | Westech Energy C | | Oil & Gas Operator | Dec 1996 |
| 31025 | Westech Energy Corporation | Denver, CO 80237 | Oil & Gas Operator | Mar 2011 |
| 31026 | Westek Resources, Inc. | | Oil & Gas Operator | Jan 2004 |
| 31027 | Westend Operating LLC | Collinsville, OK 74021 | Oil Operator | Dec 2025 |
| 31028 | Westerly Exploration, Inc. | Houston, TX 77256 | Oil & Gas Operator | Apr 2026 |
| 31029 | Western Alliance Petroleum | | Oil & Gas Operator | Dec 1987 |
| 31030 | Western American Resources LLC | Denver, CO 80202 | Oil & Gas Operator | Jun 2024 |
| 31031 | Western Avenue Properties | | Oil & Gas Operator | Dec 1993 |
| 31032 | Western Chief Oil & Gas Company | Graham, TX 76450 | Oil & Gas Operator | Jul 2009 |
| 31033 | Western Chief Operating, L.L.C. | Graham, TX 76450 | Oil & Gas Operator | Apr 2026 |
| 31034 | Western Continental Operating Company | | Oil & Gas Operator | Dec 2007 |
| 31035 | Western Discovery USA Inc. | | Oil & Gas Operator | Jan 2018 |
| 31036 | Western Disposal Systems, Inc. | Corrales, NM 87048 | Oil Operator | Apr 2026 |
| 31037 | Western Division Investments Inc | Enid, OK 73701 | Oil & Gas Operator | Jul 2021 |
| 31038 | Western DRLG. Co. | Longview, TX 75604 | Oil & Gas Operator | Nov 1996 |
| 31039 | Western Energy Group, LLC | Leander, TX 78641 | Oil & Gas Operator | Apr 2026 |
| 31040 | Western Energy Management, Inc. | Austin, TX 78716 | Oil & Gas Operator | Aug 1997 |
| 31041 | Western Engineering, Inc. | | Oil Operator | Dec 1998 |
| 31042 | Western Exploration, Inc. | | Oil Operator | May 1984 |
| 31043 | Western Farmers Electric Coop | Anadarko, OK 73005-0429 | Oil & Gas Operator | Apr 2012 |
| 31044 | Western Field Exploration, Inc. | Dilley, TX 78017 | Oil & Gas Operator | Apr 2026 |
| 31045 | Western Frontier Adventure, LLC | Easton, KS 66020 | Oil Operator | Dec 2019 |
| 31046 | Western Fuel & S | | Oil Operator | Oct 1987 |
| 31047 | Western Gas Resources Inc | Denver, CO 80202 | Oil & Gas Operator | Sep 2004 |
| 31048 | Western Gas Resources Storage | Denver, CO 80234 | Oil & Gas Operator | Jun 1999 |
| 31049 | Western Global Oil, Inc | Deerfld Beach, FL 33442 | Oil Operator | Apr 2026 |
| 31050 | Western Gulf Oil & Gas Inc. | Dallas, TX 75360 | Oil & Gas Operator | Jul 2000 |
| 31051 | Western Gulf Oil & Gas, LLC | Bishop, TX 78343 | Oil & Gas Operator | Apr 2026 |
| 31052 | Western Hemisphere Group | Buffalo, NY 14218 | Oil & Gas Operator | Dec 1993 |
| 31053 | Western Interior Energy Inc. | Denver, CO 80202 | Oil & Gas Operator | Dec 2016 |
| 31054 | Western Interior Oil & Gas Corp | Casper, WY 82602 | Oil & Gas Operator | May 2015 |
| 31055 | Western Kansas E | | Oil Operator | Aug 1993 |
| 31056 | Western Meadowlark Resources LLC | Denver, CO 80206 | Oil & Gas Operator | Jan 2026 |
| 31057 | Western Metals Corporation | | Oil & Gas Operator | Dec 2025 |
| 31058 | Western Mountain Resources LLC | Cogan Station, PA 17728 | Oil & Gas Operator | Dec 2025 |
| 31059 | Western Natl Resource Expl LLC | Oklahoma City, OK 73154-0755 | Oil & Gas Operator | Mar 2015 |
| 31060 | Western Natural Gas | | Oil & Gas Operator | Aug 1974 |
| 31061 | Western Natural Gas Company | Shelby, MT 59474 | Oil & Gas Operator | Dec 2025 |
| 31062 | Western Natural Resources Inc | Oklahoma City, OK 73116 | Oil & Gas Operator | Apr 2015 |
| 31063 | Western New York Drilling Associates 1, L.P. | Buffalo, NY 14201 | Oil & Gas Operator | Dec 2024 |
| 31064 | Western Oil & Gas Development Co. | Robinson, IL 62454 | Oil Operator | Jun 2000 |
| 31065 | Western Oil & Minerals LTD | Farmington, NM 874991228 | Oil & Gas Operator | Jan 2026 |
| 31066 | Western Oil And Gas Development Corp | Oklahoma City, OK 73103-3735 | Oil & Gas Operator | Jan 2026 |
| 31067 | Western Oil Comp | | Oil Operator | Aug 1989 |
| 31068 | Western Oil Company | Midland, TX 79702 | Oil & Gas Operator | Jul 2014 |
| 31069 | Western Oil Independent LLC | | Oil & Gas Operator | Dec 2016 |
| 31070 | Western Oil Producers Inc | Roswell, NM 88202 | Oil & Gas Operator | Jul 2005 |
| 31071 | Western Oil Refining Company | Kemmerrer, WY 83101 | Oil & Gas Operator | Dec 1994 |
| 31072 | Western Operating Company | Denver, CO 80204 | Oil & Gas Operator | Dec 2025 |
| 31073 | Western Pacific Farms, Inc. | Copeland, KS 67837 | Oil & Gas Operator | Apr 2020 |
| 31074 | Western Petroleum Company Inc | Tulsa, OK 74170-2676 | Oil & Gas Operator | Apr 2020 |
| 31075 | Western Petroleum Resources, Inc | Dallas, TX 75219 | Oil & Gas Operator | May 2021 |
| 31076 | Western Plains Resources LLC | Garden City, KS 67846 | Oil & Gas Operator | Dec 2025 |
| 31077 | Western Pride Resources, Inc. | Jacksboro, TX 76458 | Oil & Gas Operator | Jan 2011 |
| 31078 | Western Production Company | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2026 |
| 31079 | Western Products Corporation | Fairview, OK 73737 | Oil & Gas Operator | Nov 2004 |
| 31080 | Western Properti | | Oil Operator | Oct 1987 |
| 31081 | Western Reserve Exp | Perry, OH 44081 | Oil & Gas Operator | Dec 2003 |
| 31082 | Western Reserves Corporation | Abilene, TX 79608 | Oil & Gas Operator | Jan 2008 |
| 31083 | Western Reserves Oil Co Inc | Midland, TX 79705 | Oil & Gas Operator | Oct 2020 |
| 31084 | Western Reserves Oil Co Inc And Sullivan And Co | | Oil & Gas Operator | Jul 2001 |
| 31085 | Western Resources And Clean Energy, LLC | Manti, UT 84642 | Oil & Gas Operator | Feb 2026 |
| 31086 | Western Resources, Inc. | | Oil Operator | Jun 1994 |
| 31087 | Western Resources{Wva}Inc | Chantilly, VA 22022 | Oil & Gas Operator | Dec 1994 |
| 31088 | Western Sky Oil & Gas | Abilene, TX 79604 | Oil & Gas Operator | Aug 2003 |
| 31089 | Western States International Inc. | | Oil & Gas Operator | Dec 2025 |
| 31090 | Western Tank Trucks Inc | Hennessey, OK 73742 | Oil Operator | Jul 2011 |
| 31091 | Westfall-Gooden Reserves LLC | Oklahoma City, OK 73106 | Oil & Gas Operator | Jan 2026 |
| 31092 | Westfield Energy Corp. | | Oil & Gas Operator | Mar 1991 |
| 31093 | Westgate Oil Com | | Oil Operator | Mar 1993 |
| 31094 | Westgate Oil Company, Inc. | Eureka, KS 67045 | Oil & Gas Operator | Dec 2025 |
| 31095 | Westgate Petroleum, Inc. | Fritch, TX 79036 | Oil & Gas Operator | Nov 2001 |
| 31096 | Westhall Associates, Inc. | Corpus Chrsti, TX 78477 | Oil & Gas Operator | Aug 1997 |
| 31097 | Westico Energy Co. | Abilene, TX 79605 | Oil & Gas Operator | Nov 2004 |
| 31098 | Westinghouse Elec Co LLC | Monroeville, PA 15146-2808 | Gas Operator | Dec 2025 |
| 31099 | Westlake Energy Consultants Corp | Thousand Oaks, CA 91362 | Oil & Gas Operator | Aug 2003 |
| 31100 | Westlake Energy Consultants, Inc. | Westlake VIllage, CA 91362 | Gas Operator | Dec 2019 |