| 33101 | Williams Oil Company | Midland, TX 79710 | Oil & Gas Operator | Feb 2026 |
| 33102 | Williams Operating Company LLC | Comanche, OK 73529 | Oil Operator | Nov 2025 |
| 33103 | Williams Petroleum Company, Inc. | Burkburnett, TX 76354 | Oil & Gas Operator | Feb 2026 |
| 33104 | Williams Pressure Service Co. | | Oil Operator | Sep 1985 |
| 33105 | Williams Prod. Gulf Coast, L.P. | Benbrook, TX 76126 | Oil & Gas Operator | Jan 2012 |
| 33106 | Williams Producing Co | | Oil & Gas Operator | Nov 2025 |
| 33107 | Williams Production RMT Company | Denver, CO 80202 | Oil & Gas Operator | Oct 2010 |
| 33108 | Williams Refractories Inc | Cushing, OK 74023 | Oil & Gas Operator | Feb 2015 |
| 33109 | Williams Reid Oil Co | Dallas, TX 75234 | Oil & Gas Operator | Nov 2025 |
| 33110 | Williams Robert | | Oil & Gas Operator | Apr 1995 |
| 33111 | Williams Roger F | Tulsa, OK 74152-0951 | Oil & Gas Operator | May 2013 |
| 33112 | Williams Royce S | Healdton, OK 73438-0306 | Oil & Gas Operator | Apr 2014 |
| 33113 | Williams Ted H | | Oil & Gas Operator | Dec 2008 |
| 33114 | Williams Well Surveys Inc. | | Oil & Gas Operator | Dec 1996 |
| 33115 | Williams, A. Oil | Wichita Falls, TX 76308 | Oil Operator | Feb 2026 |
| 33116 | Williams, Clayton Energy, Inc. | Houston, TX 77070 | Oil & Gas Operator | Feb 2026 |
| 33117 | Williams, Clayton Energy, L.L.C | Midland, TX 79705 | Oil & Gas Operator | May 1993 |
| 33118 | Williams, Clayton W., Jr. | | Oil & Gas Operator | Jun 1989 |
| 33119 | Williams, Clayton W., Jr., Inc. | Midland, TX 79705 | Oil & Gas Operator | Mar 2008 |
| 33120 | Williams, Cynthia L. | Fredonia, NY 14063 | Gas Operator | Dec 2024 |
| 33121 | Williams, Donald M. | Eden, NY 14057 | Gas Operator | Dec 2024 |
| 33122 | Williams, Doyle | | Oil & Gas Operator | Nov 2025 |
| 33123 | Williams, E. L. | Emporia, KS 66801 | Oil & Gas Operator | Nov 1988 |
| 33124 | Williams, Floyd E | | Oil Operator | Dec 2015 |
| 33125 | Williams, H. E. | Houston, TX 77002 | Oil & Gas Operator | Dec 1994 |
| 33126 | Williams, John E | Scottsville, KY 42164 | Oil Operator | Dec 2015 |
| 33127 | Williams, Kenneth O. Jr | | Oil Operator | Nov 2006 |
| 33128 | Williams, M. A. | Houston, TX 77263 | Gas Operator | Feb 2025 |
| 33129 | Williams, Paul H. | Plainville, KS 67663 | Oil Operator | Mar 1987 |
| 33130 | Williams, Paul M. And/Or Judy A. | Leroy, KS 66857 | Oil Operator | Nov 2018 |
| 33131 | Williams, Raymond H.(Deceased) | Sedan, KS 67361 | Oil Operator | Nov 2009 |
| 33132 | Williams, Robert J. | Independence, KS 67301 | Oil Operator | May 2019 |
| 33133 | Williams, W. R. | Amarillo, TX 79105 | Oil & Gas Operator | Jun 2013 |
| 33134 | Williams, W. R., Inc. | Amarillo, TX 79105 | Oil & Gas Operator | Feb 2024 |
| 33135 | Williams-Cody, Inc. | Houston, TX 77060 | Oil & Gas Operator | May 1994 |
| 33136 | Williams-Robinson | | Oil Operator | Mar 1988 |
| 33137 | Williamson & Smitherman | | Oil & Gas Operator | Dec 2008 |
| 33138 | Williamson Gregory L | Skiatook, OK 74070-0028 | Oil & Gas Operator | Mar 2015 |
| 33139 | Williamson Oil & Gas, Inc. | Shreveport, LA 71166 | Oil & Gas Operator | Dec 2024 |
| 33140 | Williamson Oil And Gas LLC | Lower Salem, OH 45745 | Oil & Gas Operator | Dec 2024 |
| 33141 | Williamson Operating Co. | Uvalde, TX 78801 | Oil & Gas Operator | Feb 2026 |
| 33142 | Williamson Operating Co., LLC | Stamps, AR 71860 | Oil & Gas Operator | Feb 2026 |
| 33143 | Williamson Ozella | Skiatook, OK 74070 | Oil Operator | Aug 2013 |
| 33144 | Williamson Pumping Ser., Inc. | | Oil Operator | Nov 2024 |
| 33145 | Williamson Pumping Service, Inc | Stamps, AR 71860 | Oil & Gas Operator | Jan 2025 |
| 33146 | Williamson, Don B. | Athens, TX 75751 | Oil & Gas Operator | Mar 2002 |
| 33147 | Williamson, Harry W. Inc. | Abilene, TX 79604 | Oil & Gas Operator | May 1995 |
| 33148 | Williamson, J. C. | Midland, TX 79701 | Oil & Gas Operator | Jan 2001 |
| 33149 | Williamson, Ralph E. | Midland, TX 79702 | Oil & Gas Operator | Jan 2012 |
| 33150 | Williamson, Richard | Camden, AR 71701 | Oil & Gas Operator | Jan 2025 |
| 33151 | Williford Energy | | Gas Operator | Jun 1986 |
| 33152 | Williford Energy Company | Tulsa, OK 74135 | Oil & Gas Operator | Feb 2026 |
| 33153 | Williford Petroleum, L.L.C. | Green CV SPGS, FL 32043 | Oil & Gas Operator | Feb 2026 |
| 33154 | Williford Resources LLC | Tulsa, OK 74136-1020 | Oil & Gas Operator | Dec 2025 |
| 33155 | Willis Energy | Neodesha, KS 66757 | Oil & Gas Operator | Dec 2009 |
| 33156 | Willis Operating Co. | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 33157 | Williston Basin Cosul-Profit SH | | Oil Operator | Dec 1989 |
| 33158 | Williston Hunter ND, LLC | | Oil & Gas Operator | Mar 2014 |
| 33159 | Williston Industrial Supply Corporation | Williston, ND 58801 | Oil & Gas Operator | Mar 2012 |
| 33160 | Willo Oil & Gas Exploration, LLC | Boerne, TX 78006 | Oil & Gas Operator | Jul 2020 |
| 33161 | Willow Bend Oil LLC | Dallas, TX 75206 | Oil & Gas Operator | Feb 2026 |
| 33162 | Willow Creek Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Feb 2009 |
| 33163 | Willow Run Corporation | | Oil & Gas Operator | Dec 2021 |
| 33164 | Willow Springs Prod. Serv.,LLC | Kilgore, TX 75663 | Oil & Gas Operator | Aug 1997 |
| 33165 | Willow Springs Production, Inc. | Longview, TX 75606 | Oil & Gas Operator | Sep 1999 |
| 33166 | Willowbend Investments, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Feb 2026 |
| 33167 | Willowick Production LLC | Houston, TX 77057 | Oil & Gas Operator | Feb 2026 |
| 33168 | Wills Oil Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Jun 1995 |
| 33169 | Wills Oil Holdings, L.L.C. | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2026 |
| 33170 | Willstar Energy GP, LLC | Houston, TX 77279 | Oil & Gas Operator | Sep 2013 |
| 33171 | Wilmar Oil & Gas | Williamstown, WV 26167 | Oil & Gas Operator | Dec 2003 |
| 33172 | Wilmoth Clark Exploration & Prod LLC | Glen Campbell, PA 15742-0159 | Gas Operator | Dec 2008 |
| 33173 | Wilmoth Interests, Inc. | Marion Center, PA 15759 | Oil & Gas Operator | Dec 2025 |
| 33174 | Wilshire Enterprises Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2015 |
| 33175 | Wilshire Oil Co. Of Texas | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2004 |
| 33176 | Wilshire Oil LLC | Oklahoma City, OK 73116 | Oil & Gas Operator | Nov 2025 |
| 33177 | Wilson - Owens Production Co. | Longview, TX 75601 | Oil & Gas Operator | Nov 1998 |
| 33178 | Wilson Allen Dewayne | Okemah, OK 74859 | Oil & Gas Operator | Jun 2025 |
| 33179 | Wilson Brothers Leasing Co., Inc | Midland, TX 79705 | Oil & Gas Operator | Mar 2015 |
| 33180 | Wilson Charles B | | Oil & Gas Operator | Dec 1996 |
| 33181 | Wilson Charles R | Durant, OK 74701 | Oil Operator | Sep 2025 |
| 33182 | Wilson Claude | Loco, OK 73442-9404 | Oil & Gas Operator | Nov 2025 |
| 33183 | Wilson County Holdings LLC | Golden, CO 80403 | Oil Operator | Sep 2025 |
| 33184 | Wilson Drilling | | Oil & Gas Operator | Apr 1994 |
| 33185 | Wilson Energy LLC | Marietta, OH 45750 | Oil & Gas Operator | Dec 2024 |
| 33186 | Wilson Energy Resources LLC | Graham, TX 76450 | Oil Operator | Feb 2026 |
| 33187 | Wilson Exploration Co. | Fort Worth, TX 76102 | Oil & Gas Operator | Jul 1996 |
| 33188 | Wilson H Drew | Collinsville, OK 74021 | Oil Operator | Nov 2025 |
| 33189 | Wilson Hydrocarbon Inc. | Houston, TX 77066 | Oil & Gas Operator | Feb 2026 |
| 33190 | Wilson Jay - Azog Inc | Malta, OH 43758 | Oil & Gas Operator | Dec 2024 |
| 33191 | Wilson Oil Co. | Houston, TX 77263 | Oil & Gas Operator | Feb 2026 |
| 33192 | Wilson Oil Compa | | Oil Operator | Dec 1986 |
| 33193 | Wilson Oil Properties, LLC | Winfield, KS 67156 | Oil Operator | Nov 2009 |
| 33194 | Wilson Operating Co. | Archer City, TX 76351 | Oil & Gas Operator | Feb 2026 |
| 33195 | Wilson Operating Company LLC | Tulsa, OK 74105 | Oil & Gas Operator | Feb 2026 |
| 33196 | Wilson Operating Service Inc | Brownfield, TX 79316 | Oil & Gas Operator | Aug 2003 |
| 33197 | Wilson Petroleum Co. | Springfield, MO 65803 | Oil & Gas Operator | Feb 2026 |
| 33198 | Wilson Petroleum Corp | Westerville, OH 43081 | Oil & Gas Operator | Dec 2000 |
| 33199 | Wilson Production Co Of La,Inc | | Oil & Gas Operator | Apr 1991 |
| 33200 | Wilson Resources, Inc. | Longview, TX 75601 | Oil & Gas Operator | Feb 2026 |