| 30701 | Westall-Mask | Roswell, NM 88201 | Oil & Gas Operator | Dec 1994 |
| 30702 | Westamerica Corporation | Dewey, OK 74029-0040 | Oil & Gas Operator | Aug 1999 |
| 30703 | Westar Energy, Inc. | Midland, TX 79705 | Oil & Gas Operator | Mar 2008 |
| 30704 | Westar Oil & Minerals | | Oil Operator | Feb 1999 |
| 30705 | Westbrook Oil & Gas Co. Inc. | Gainesville, TX 76240 | Oil & Gas Operator | May 2024 |
| 30706 | Westbrook Oil Corp | Jal, NM 88252 | Oil & Gas Operator | May 2018 |
| 30707 | Westburne Petroleum Inc | | Oil Operator | Jun 1990 |
| 30708 | Westco Oil Company | Ozona, TX 76943 | Oil & Gas Operator | May 2024 |
| 30709 | Westech Energy C | | Oil & Gas Operator | Dec 1996 |
| 30710 | Westech Energy Corporation | Denver, CO 80237 | Oil & Gas Operator | Mar 2011 |
| 30711 | Westend Operating LLC | | Oil Operator | Dec 2023 |
| 30712 | Westerly Exploration, Inc. | Houston, TX 77256 | Oil & Gas Operator | May 2024 |
| 30713 | Western Alliance Petroleum | | Oil & Gas Operator | Dec 1987 |
| 30714 | Western American Resources LLC | Denver, CO 80202 | Oil & Gas Operator | Aug 2023 |
| 30715 | Western Avenue Properties | | Oil & Gas Operator | Dec 1993 |
| 30716 | Western Chief Oil & Gas Company | Graham, TX 76450 | Oil & Gas Operator | Jul 2009 |
| 30717 | Western Chief Operating, L.L.C. | Graham, TX 76450 | Oil & Gas Operator | May 2024 |
| 30718 | Western Continental Operating Company | | Oil & Gas Operator | Dec 2007 |
| 30719 | Western Discovery USA Inc. | | Oil & Gas Operator | Jan 2018 |
| 30720 | Western Disposal Systems, Inc. | Corrales, NM 87048 | Oil Operator | May 2024 |
| 30721 | Western Division Investments Inc | Enid, OK 73701 | Oil & Gas Operator | Jul 2021 |
| 30722 | Western DRLG. Co. | Longview, TX 75604 | Oil & Gas Operator | Nov 1996 |
| 30723 | Western Energy Group, LLC | Leander, TX 78641 | Oil & Gas Operator | May 2024 |
| 30724 | Western Energy Management, Inc. | Austin, TX 78716 | Oil & Gas Operator | Aug 1997 |
| 30725 | Western Engineering, Inc. | | Oil Operator | Dec 1998 |
| 30726 | Western Exploration, Inc. | | Oil Operator | May 1984 |
| 30727 | Western Farmers Electric Coop | Anadarko, OK 73005-0429 | Oil & Gas Operator | Apr 2012 |
| 30728 | Western Field Exploration, Inc. | Dilley, TX 78017 | Oil & Gas Operator | May 2024 |
| 30729 | Western Frontier Adventure, LLC | Easton, KS 66020 | Oil Operator | Dec 2019 |
| 30730 | Western Fuel & S | | Oil Operator | Oct 1987 |
| 30731 | Western Gas Resources Inc | Denver, CO 80202-1955 | Oil & Gas Operator | Dec 2007 |
| 30732 | Western Gas Resources Storage | Denver, CO 80234 | Oil & Gas Operator | Jun 1999 |
| 30733 | Western Gas Resources-Sand Wash Inc | | Oil & Gas Operator | Feb 2008 |
| 30734 | Western Global Oil, Inc | Deerfld Beach, FL 33442 | Oil Operator | May 2024 |
| 30735 | Western Gulf Oil & Gas Inc. | Dallas, TX 75360 | Oil & Gas Operator | Jul 2000 |
| 30736 | Western Gulf Oil & Gas, LLC | Bishop, TX 78343 | Oil & Gas Operator | May 2024 |
| 30737 | Western Hemisphere Group | Buffalo, NY 14218 | Oil & Gas Operator | Dec 1993 |
| 30738 | Western Interior Energy Inc. | Denver, CO 80202 | Oil & Gas Operator | Jul 2020 |
| 30739 | Western Interior Oil & Gas Corp | Casper, WY 82602 | Oil & Gas Operator | May 2015 |
| 30740 | Western Kansas E | | Oil Operator | Aug 1993 |
| 30741 | Western Meadowlark Resources LLC | Denver, CO 80206 | Oil & Gas Operator | Feb 2024 |
| 30742 | Western Metals Corporation | | Oil & Gas Operator | Feb 2024 |
| 30743 | Western Natl Resource Expl LLC | Oklahoma City, OK 73154-0755 | Oil & Gas Operator | Mar 2015 |
| 30744 | Western Natural Gas | | Oil & Gas Operator | Aug 1974 |
| 30745 | Western Natural Gas Company | Shelby, MT 59474 | Oil & Gas Operator | Jan 2024 |
| 30746 | Western Natural Resources Inc | Oklahoma City, OK 73116 | Oil & Gas Operator | Apr 2015 |
| 30747 | Western New York Drilling Associates 1, L.P. | Buffalo, NY 14201 | Oil & Gas Operator | Dec 2022 |
| 30748 | Western New York Drilling Associates Joint Venture | Buffalo, NY 14201 | Oil & Gas Operator | Dec 2022 |
| 30749 | Western Oil & Gas Development Co. | Robinson, IL 62454 | Oil Operator | Jun 2000 |
| 30750 | Western Oil & Minerals LTD | Farmington, NM 874991228 | Oil & Gas Operator | Mar 2024 |
| 30751 | Western Oil And Gas Development Corp | Oklahoma City, OK 73103-3735 | Oil & Gas Operator | Feb 2024 |
| 30752 | Western Oil Comp | | Oil Operator | Aug 1989 |
| 30753 | Western Oil Company | Midland, TX 79702 | Oil & Gas Operator | Jul 2014 |
| 30754 | Western Oil Independent LLC | | Oil & Gas Operator | Dec 2016 |
| 30755 | Western Oil Producers Inc | Roswell, NM 88202 | Oil & Gas Operator | Jul 2005 |
| 30756 | Western Oil Refining Company | Kemmerrer, WY 83101 | Oil & Gas Operator | Dec 1994 |
| 30757 | Western Operating Company | Denver, CO 80204 | Oil & Gas Operator | Feb 2024 |
| 30758 | Western Pacific Farms, Inc. | Copeland, KS 67837 | Oil & Gas Operator | Apr 2020 |
| 30759 | Western Petroleum Company Inc | Tulsa, OK 74170-2676 | Oil & Gas Operator | Apr 2020 |
| 30760 | Western Petroleum Resources, Inc | Dallas, TX 75219 | Oil & Gas Operator | May 2021 |
| 30761 | Western Pride Resources, Inc. | Jacksboro, TX 76458 | Oil & Gas Operator | Jan 2011 |
| 30762 | Western Production Company | Fort Worth, TX 76102 | Oil & Gas Operator | May 2024 |
| 30763 | Western Products Corporation | Fairview, OK 73737 | Oil & Gas Operator | Nov 2004 |
| 30764 | Western Properti | | Oil Operator | Oct 1987 |
| 30765 | Western Reserve Exp | Perry, OH 44081 | Oil & Gas Operator | Dec 2003 |
| 30766 | Western Reserves Corporation | Abilene, TX 79608 | Oil & Gas Operator | Jan 2008 |
| 30767 | Western Reserves Oil Co Inc | Midland, TX 79705 | Oil & Gas Operator | Oct 2020 |
| 30768 | Western Reserves Oil Co Inc And Sullivan And Co | | Oil & Gas Operator | Jul 2001 |
| 30769 | Western Resources And Clean Energy, LLC | Manti, UT 84642 | Oil & Gas Operator | Mar 2024 |
| 30770 | Western Resources, Inc. | | Oil Operator | Jun 1994 |
| 30771 | Western Resources{Wva}Inc | Chantilly, VA 22022-595-595 | Oil & Gas Operator | Dec 1994 |
| 30772 | Western Sky Oil & Gas | Abilene, TX 79604 | Oil & Gas Operator | Aug 2003 |
| 30773 | Western States International Inc. | | Oil & Gas Operator | Feb 2024 |
| 30774 | Western Tank Trucks Inc | Hennessey, OK 73742 | Oil Operator | Jul 2011 |
| 30775 | Westfall-Gooden Reserves LLC | | Oil & Gas Operator | Jan 2024 |
| 30776 | Westfield Energy Corp. | | Oil & Gas Operator | Mar 1991 |
| 30777 | Westgate Oil Com | | Oil Operator | Mar 1993 |
| 30778 | Westgate Oil Company, Inc. | Eureka, KS 67045 | Oil Operator | Feb 2024 |
| 30779 | Westgate Petroleum, Inc. | Fritch, TX 79036 | Oil & Gas Operator | Nov 2001 |
| 30780 | Westhall Associates, Inc. | Corpus Chrsti, TX 78477 | Oil & Gas Operator | Aug 1997 |
| 30781 | Westico Energy Co. | Abilene, TX 79605 | Oil & Gas Operator | Nov 2004 |
| 30782 | Westinghouse Elec Co LLC | Monroeville, PA 15146-2808 | Gas Operator | Dec 2023 |
| 30783 | Westlake Energy Consultants Corp | Thousand Oaks, CA 91362 | Oil & Gas Operator | Aug 2003 |
| 30784 | Westlake Energy Consultants, Inc. | Westlake VIllage, CA 91362 | Gas Operator | Dec 2019 |
| 30785 | Westland Oil Development Corp. | Conroe, TX 77305 | Oil & Gas Operator | Mar 2008 |
| 30786 | Westlands Resources Corporation | Monrovia, CA 91016 | Oil & Gas Operator | May 2024 |
| 30787 | Westmore Drillin | | Oil & Gas Operator | Oct 1995 |
| 30788 | Westmore Drilling Company, Inc. | Lawrence, KS 66047 | Oil & Gas Operator | Dec 2019 |
| 30789 | Westmoreland Gas, LLC | | Oil & Gas Operator | Dec 2021 |
| 30790 | Weston Management & Operations Group | Centreville, MD 21617 | Oil Operator | May 1997 |
| 30791 | Westover Production Co., LLC | Kermit, TX 79745 | Oil & Gas Operator | May 2024 |
| 30792 | Westpark Petroleum, Inc. | Austin, TX 78755 | Oil & Gas Operator | May 2024 |
| 30793 | Westport Oil & Gas Company LP | The Woodlands, TX 77380 | Oil & Gas Operator | Feb 2007 |
| 30794 | Westport Oil And Gas Company Inc | Denver, CO 80202 | Oil & Gas Operator | Feb 2002 |
| 30795 | Westport Oil Com | | Oil Operator | Feb 1994 |
| 30796 | Westport Petrole | | Oil Operator | Feb 1985 |
| 30797 | Westridge Oil & Gas Properties | Mineral Wells, TX 76068 | Oil & Gas Operator | May 2024 |
| 30798 | Westshore Operating Inc | Naples, FL 34109-0549 | Oil & Gas Operator | Dec 2011 |
| 30799 | Westside Energy Op. Co., LP | Oklahoma City, OK 73142 | Oil & Gas Operator | Jun 2008 |
| 30800 | Westside Farming Co. Inc. | | Gas Operator | Dec 1995 |