| 31501 | Wessely Energy Corporation | | Oil & Gas Operator | Feb 1989 |
| 31502 | West 40 Production | Ness City, KS 67560 | Oil Operator | Apr 1998 |
| 31503 | West American Energy Corporation | | Oil & Gas Operator | May 2025 |
| 31504 | West Barrytown Services, LLC | Gilbertown, AL 36908 | Oil & Gas Operator | Mar 2020 |
| 31505 | West Bay Exploration Company | Muenster, TX 76252 | Oil & Gas Operator | Apr 2025 |
| 31506 | West Co., The | Wichita Falls, TX 76307 | Oil & Gas Operator | Jun 2016 |
| 31507 | West Coast Oil Company | | Oil Operator | Dec 1996 |
| 31508 | West Coast Operators Inc. | | Oil & Gas Operator | Apr 2025 |
| 31509 | West Delta Oil Co. | | Oil & Gas Operator | Jul 2000 |
| 31510 | West Energy Operating LLC | | Oil & Gas Operator | Apr 2025 |
| 31511 | West Fox SWD LLC | Ratliff City, OK 73481 | Oil Operator | May 2025 |
| 31512 | West Gas Inc | | Oil & Gas Operator | Dec 2017 |
| 31513 | West Hopkins Petroleum Co LP | | Oil & Gas Operator | May 2025 |
| 31514 | West Inland Energy, Inc. | N Richlnd HLS, TX 76182 | Oil & Gas Operator | May 2025 |
| 31515 | West Kansas Oil | | Oil Operator | Jul 1992 |
| 31516 | West Kansas Oil Corporation | Oberlin, KS 67749 | Oil Operator | Aug 1998 |
| 31517 | West Largo Corp | Tulsa, OK 74137 | Oil & Gas Operator | Sep 2023 |
| 31518 | West Mountain Operating Co, Inc. | Longview, TX 75604 | Oil & Gas Operator | Feb 2019 |
| 31519 | West Newport Oil Co. | | Oil & Gas Operator | Apr 2025 |
| 31520 | West Oil Resources, LLC | Liberty Hill, TX 78642 | Oil & Gas Operator | Jul 2025 |
| 31521 | West Operating Company | Seminole, OK 74868-3851 | Oil & Gas Operator | Mar 2015 |
| 31522 | West Petroleum Corp. | San Antonio, TX 78205 | Oil & Gas Operator | Oct 2009 |
| 31523 | West Plains Enterprises, Inc | Plains, KS 67869 | Oil & Gas Operator | Sep 2022 |
| 31524 | West River Energy LLC | Portville, NY 14770 | Oil & Gas Operator | Dec 2024 |
| 31525 | West Side Exploration, LLC | | Oil & Gas Operator | Mar 2025 |
| 31526 | West Side Rentals | | Oil & Gas Operator | Apr 2025 |
| 31527 | West Sunset Disposal, LLC | Amarillo, TX 79159 | Oil Operator | Oct 2003 |
| 31528 | West Texas Assets, LLC | Fort Worth, TX 76108 | Gas Operator | May 2018 |
| 31529 | West Texas Diversified Interests | Eastland, TX 76448 | Oil & Gas Operator | Jun 2006 |
| 31530 | West Texas Exploration Co. | Graham, TX 76450 | Oil & Gas Operator | May 1996 |
| 31531 | West Texas Oil And Gas Corp. | Houston, TX 77056 | Oil & Gas Operator | Feb 2014 |
| 31532 | West Texas Oil And Gas Oper.,Inc | Houston, TX 77046 | Oil & Gas Operator | Jul 2024 |
| 31533 | West Texas Operating Co LLC D/B/A Xtreme Energy Co | Victoria, TX 77902-2326 | Oil & Gas Operator | May 2025 |
| 31534 | West Texas Royalties, Inc. | Graham, TX 76450 | Oil & Gas Operator | Jul 2025 |
| 31535 | West Texas Syndicate LLC. | Corpus Chrsti, TX 78414 | Oil Operator | Jul 2025 |
| 31536 | West Tuleta Operating Corp. | Tuleta, TX 78162 | Oil & Gas Operator | May 2019 |
| 31537 | West VIrginia Land Resources, Inc. | | Oil & Gas Operator | Dec 2021 |
| 31538 | West X, Inc. | Hays, KS 67601 | Oil Operator | Aug 1997 |
| 31539 | West,Gordon T.Jr. & Rugeley,Stan | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2019 |
| 31540 | West-States Energy, Inc. | Rimrock, AZ 86335 | Oil Operator | Jul 2025 |
| 31541 | Westall Oil & Gas Co. | | Oil & Gas Operator | May 1982 |
| 31542 | Westall-Mask | Roswell, NM 88201 | Oil & Gas Operator | Dec 1994 |
| 31543 | Westamerica Corporation | Dewey, OK 74029-0040 | Oil & Gas Operator | Aug 1999 |
| 31544 | Westar Energy, Inc. | Midland, TX 79705 | Oil & Gas Operator | Mar 2008 |
| 31545 | Westar Oil & Minerals | | Oil Operator | Feb 1999 |
| 31546 | Westbrook Oil & Gas Co. Inc. | Gainesville, TX 76240 | Oil & Gas Operator | Jul 2025 |
| 31547 | Westbrook Oil Corp | Jal, NM 88252 | Oil & Gas Operator | May 2018 |
| 31548 | Westburne Petroleum Inc | | Oil Operator | Jun 1990 |
| 31549 | Westco Oil Company | Ozona, TX 76943 | Oil & Gas Operator | Jul 2025 |
| 31550 | Westech Energy C | | Oil & Gas Operator | Dec 1996 |
| 31551 | Westech Energy Corporation | Denver, CO 80237 | Oil & Gas Operator | Mar 2011 |
| 31552 | Westek Resources, Inc. | | Oil & Gas Operator | Jan 2004 |
| 31553 | Westend Operating LLC | Collinsville, OK 74021 | Oil Operator | May 2025 |
| 31554 | Westerly Exploration, Inc. | Houston, TX 77256 | Oil & Gas Operator | Jul 2025 |
| 31555 | Western Alliance Petroleum | | Oil & Gas Operator | Dec 1987 |
| 31556 | Western American Resources LLC | Denver, CO 80202 | Oil & Gas Operator | Jun 2024 |
| 31557 | Western Avenue Properties | | Oil & Gas Operator | Dec 1993 |
| 31558 | Western Chief Oil & Gas Company | Graham, TX 76450 | Oil & Gas Operator | Jul 2009 |
| 31559 | Western Chief Operating, L.L.C. | Graham, TX 76450 | Oil & Gas Operator | Jul 2025 |
| 31560 | Western Continental Operating Company | | Oil & Gas Operator | Dec 2007 |
| 31561 | Western Discovery USA Inc. | | Oil & Gas Operator | Jan 2018 |
| 31562 | Western Disposal Systems, Inc. | Corrales, NM 87048 | Oil Operator | Jul 2025 |
| 31563 | Western Division Investments Inc | Enid, OK 73701 | Oil & Gas Operator | Jul 2021 |
| 31564 | Western DRLG. Co. | Longview, TX 75604 | Oil & Gas Operator | Nov 1996 |
| 31565 | Western Energy Group, LLC | Leander, TX 78641 | Oil & Gas Operator | Jul 2025 |
| 31566 | Western Energy Management, Inc. | Austin, TX 78716 | Oil & Gas Operator | Aug 1997 |
| 31567 | Western Engineering, Inc. | | Oil Operator | Dec 1998 |
| 31568 | Western Exploration, Inc. | | Oil Operator | May 1984 |
| 31569 | Western Farmers Electric Coop | Anadarko, OK 73005-0429 | Oil & Gas Operator | Apr 2012 |
| 31570 | Western Field Exploration, Inc. | Dilley, TX 78017 | Oil & Gas Operator | Jul 2025 |
| 31571 | Western Frontier Adventure, LLC | Easton, KS 66020 | Oil Operator | Dec 2019 |
| 31572 | Western Fuel & S | | Oil Operator | Oct 1987 |
| 31573 | Western Gas Resources Inc | Denver, CO 80202 | Oil & Gas Operator | Dec 2004 |
| 31574 | Western Gas Resources Storage | Denver, CO 80234 | Oil & Gas Operator | Jun 1999 |
| 31575 | Western Gas Resources-Sand Wash Inc | | Oil & Gas Operator | Feb 2008 |
| 31576 | Western Global Oil, Inc | Deerfld Beach, FL 33442 | Oil Operator | Jul 2025 |
| 31577 | Western Gulf Oil & Gas Inc. | Dallas, TX 75360 | Oil & Gas Operator | Jul 2000 |
| 31578 | Western Gulf Oil & Gas, LLC | Bishop, TX 78343 | Oil & Gas Operator | Jul 2025 |
| 31579 | Western Hemisphere Group | Buffalo, NY 14218 | Oil & Gas Operator | Dec 1993 |
| 31580 | Western Interior Energy Inc. | Denver, CO 80202 | Oil & Gas Operator | Jul 2020 |
| 31581 | Western Interior Oil & Gas Corp | Casper, WY 82602 | Oil & Gas Operator | May 2015 |
| 31582 | Western Kansas E | | Oil Operator | Aug 1993 |
| 31583 | Western Meadowlark Resources LLC | Denver, CO 80206 | Oil & Gas Operator | Apr 2025 |
| 31584 | Western Metals Corporation | | Oil & Gas Operator | Apr 2025 |
| 31585 | Western Mountain Resources LLC | Cogan Station, PA 17728 | Oil & Gas Operator | Apr 2025 |
| 31586 | Western Natl Resource Expl LLC | Oklahoma City, OK 73154-0755 | Oil & Gas Operator | Mar 2015 |
| 31587 | Western Natural Gas | | Oil & Gas Operator | Aug 1974 |
| 31588 | Western Natural Gas Company | Shelby, MT 59474 | Oil & Gas Operator | Apr 2025 |
| 31589 | Western Natural Resources Inc | Oklahoma City, OK 73116 | Oil & Gas Operator | Apr 2015 |
| 31590 | Western New York Drilling Associates 1, L.P. | Buffalo, NY 14201 | Oil & Gas Operator | Dec 2024 |
| 31591 | Western Oil & Gas Development Co. | Robinson, IL 62454 | Oil Operator | Jun 2000 |
| 31592 | Western Oil & Minerals LTD | Farmington, NM 874991228 | Oil & Gas Operator | May 2025 |
| 31593 | Western Oil And Gas Development Corp | Oklahoma City, OK 73103-3735 | Oil & Gas Operator | Apr 2025 |
| 31594 | Western Oil Comp | | Oil Operator | Aug 1989 |
| 31595 | Western Oil Company | Midland, TX 79702 | Oil & Gas Operator | Jul 2014 |
| 31596 | Western Oil Independent LLC | | Oil & Gas Operator | Dec 2016 |
| 31597 | Western Oil Producers Inc | Roswell, NM 88202 | Oil & Gas Operator | Jul 2005 |
| 31598 | Western Oil Refining Company | Kemmerrer, WY 83101 | Oil & Gas Operator | Dec 1994 |
| 31599 | Western Operating Company | Denver, CO 80204 | Oil & Gas Operator | May 2025 |
| 31600 | Western Pacific Farms, Inc. | Copeland, KS 67837 | Oil & Gas Operator | Apr 2020 |