| 1201 | Wilson, Dewey | Coleman, TX 76834 | Oil & Gas Operator | Nov 2007 |
| 1202 | Wilson, Don H., Inc. | Elkhart, TX 75839 | Oil & Gas Operator | May 2019 |
| 1203 | Wilson, E. C. Enterprises, Inc. | Houston, TX 77056 | Gas Operator | May 1993 |
| 1204 | Wilson, Ernest L | Morganfield, KY 42437 | Oil Operator | Dec 2023 |
| 1205 | Wilson, H C | | Gas Operator | Dec 2003 |
| 1206 | Wilson, Jerry L. | Ranger, TX 76470 | Oil & Gas Operator | Feb 2026 |
| 1207 | Wilson, Olan Max | Cisco, TX 76437 | Oil & Gas Operator | Feb 2026 |
| 1208 | Wilson, W R | | Oil & Gas Operator | Nov 2025 |
| 1209 | Wilson, W. Corp. | Midland, TX 79705 | Oil & Gas Operator | Mar 1999 |
| 1210 | Wilson, W.W. Jr. Properties | Abilene, TX 79605 | Oil & Gas Operator | Jul 1995 |
| 1211 | Wilson, Warren C | | Oil Operator | Nov 2025 |
| 1212 | Wilson, WM. B. Exploration Inc. | Midland, TX 79701 | Oil & Gas Operator | Jan 1996 |
| 1213 | Wilson-Raczka, Diane R. | Irving, NY 14081 | Gas Operator | Dec 2024 |
| 1214 | Wilson-Shab Corp. | Electra, TX 76360 | Oil & Gas Operator | Feb 2026 |
| 1215 | Wilton Oil Company | Dallas, TX 75206 | Oil & Gas Operator | Apr 1999 |
| 1216 | Wilton Petroleum | | Oil & Gas Operator | Jun 1985 |
| 1217 | Wilton Petroleum, Inc. | Canton, KS 67428 | Oil & Gas Operator | Sep 2025 |
| 1218 | Wilton, Frank | Graham, TX 76450 | Oil & Gas Operator | Oct 2016 |
| 1219 | Wimberley Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Feb 2013 |
| 1220 | Wimberley James A | Dallas, TX 75229-6180 | Oil & Gas Operator | Nov 2014 |
| 1221 | Wimco | Dallas, TX 75229 | Oil & Gas Operator | Jul 2008 |
| 1222 | Wimsco, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Dec 1994 |
| 1223 | Wimsett Kenneth | | Oil Operator | Apr 1989 |
| 1224 | Win Oil Company | Russell, KS 67665 | Oil & Gas Operator | Jul 2021 |
| 1225 | Winbeau Oil & Gas Co. | | Oil & Gas Operator | Oct 2013 |
| 1226 | Winchester Energy Operating Co. | Austin, TX 78746 | Oil & Gas Operator | Feb 2026 |
| 1227 | Winchester Energy, LLC | Houston, TX 77056 | Oil & Gas Operator | Feb 2026 |
| 1228 | Winchester Exploration, Inc. | Arlington, TX 76013 | Oil & Gas Operator | Aug 2003 |
| 1229 | Winchester Oil & Gas LLC | Rockdale, TX 76567 | Oil Operator | Feb 2026 |
| 1230 | Winchester Oil Corporation | Maysville, OK 73057-0600 | Oil & Gas Operator | Apr 2010 |
| 1231 | Winchester Operating, Inc. | Bryan, TX 77808 | Oil & Gas Operator | Aug 2001 |
| 1232 | Winchester Production Co., LTD. | Shreveport, LA 71129 | Oil & Gas Operator | Sep 2008 |
| 1233 | Winchester Production Company | Shreveport, LA 71129 | Oil & Gas Operator | Nov 2008 |
| 1234 | Winco Of Kansas | Kechi, KS 67067 | Oil Operator | Aug 1982 |
| 1235 | Winco Oil Inc. | Abilene, TX 79608 | Oil & Gas Operator | Feb 2026 |
| 1236 | Winco Petroleum Company | Richardson, TX 75080 | Oil & Gas Operator | Jan 2003 |
| 1237 | Winco Petroleum Corp | Denver, CO 80202 | Oil & Gas Operator | Dec 1997 |
| 1238 | Wind River Energy Commission | | Oil Operator | Jan 2026 |
| 1239 | Wind River Energy, Inc. | Midland, TX 79710 | Oil & Gas Operator | Feb 2026 |
| 1240 | Wind River Exploration | Powell, WY 82435 | Oil & Gas Operator | Jan 2026 |
| 1241 | Wind River Exploration Inc | Sewickley, PA 15143 | Oil & Gas Operator | Sep 2025 |
| 1242 | Wind River II Corporation | Midvale, UT 84047-6002 | Gas Operator | Jan 2020 |
| 1243 | Wind River Oil & Gas, Inc. | Jackson, WY 83002 | Oil Operator | Aug 2000 |
| 1244 | Wind River Resources Corp | Park City, UT 84098 | Oil & Gas Operator | Jan 2020 |
| 1245 | Wind River Resources Inc | Tulsa, OK 74136-6381 | Oil & Gas Operator | Jun 2010 |
| 1246 | Winder Oil Company | | Oil Operator | Jun 2025 |
| 1247 | Windfall Oil & Gas Inc | Falls Creek, PA 15840-2617 | Gas Operator | Dec 2024 |
| 1248 | Windfohr Oil Company | | Oil & Gas Operator | May 1980 |
| 1249 | Windgate Oil Com | | Oil Operator | Jul 1985 |
| 1250 | Windham Oil Company | | Oil & Gas Operator | Dec 1987 |
| 1251 | Windham Oil Corp. | | Oil & Gas Operator | Dec 2024 |
| 1252 | Windham Resources | Abilene, TX 79608 | Oil & Gas Operator | Feb 2026 |
| 1253 | Windham Resources, Inc. | Tuscola, TX 79562 | Oil & Gas Operator | Feb 2004 |
| 1254 | Windham, L. E. | Rankin, TX 79778 | Oil & Gas Operator | Dec 1996 |
| 1255 | Windham, L.E. Estate Of | Midland, TX 79702 | Oil & Gas Operator | Mar 2012 |
| 1256 | Windler-Doudna, A General Partnership | | Oil Operator | Sep 2000 |
| 1257 | Windmill Oil Company | Austin, TX 78747 | Oil & Gas Operator | Mar 2008 |
| 1258 | Windmill Windy Acres Farm, LLC | Penn Yan, NY 14527 | Gas Operator | Dec 2024 |
| 1259 | Window Operating Co., The | Coleman, TX 76834 | Oil & Gas Operator | Feb 2026 |
| 1260 | Windridge Operating LLC | | Oil & Gas Operator | Dec 2025 |
| 1261 | Windrush Operating Co., L.L.C. | Longville, LA 70652 | Oil & Gas Operator | Feb 2026 |
| 1262 | Windrush Operating Company | | Oil & Gas Operator | Jan 2009 |
| 1263 | Winds Exploration And Production, LLC | Houston, TX 77032 | Gas Operator | Jan 2024 |
| 1264 | Windsor Associates Inc | Fairlawn, OH 44333-4006 | Oil & Gas Operator | Dec 2012 |
| 1265 | Windsor Energy Group LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Aug 2021 |
| 1266 | Windsor Energy Inc | Dallas, TX 75204-3199 | Oil & Gas Operator | May 2006 |
| 1267 | Windsor Exploration Company | Dallas, TX 75204 | Oil & Gas Operator | Jan 1994 |
| 1268 | Windsor Gas Corporation | | Oil & Gas Operator | Aug 1989 |
| 1269 | Windsor Permian LLC | Midland, TX 79701 | Oil & Gas Operator | Jun 2012 |
| 1270 | Windward Development LLC | Tulsa, OK 74136-7007 | Oil & Gas Operator | Jul 2019 |
| 1271 | Windy Cove Energy II, LLC | Houston, TX 77079 | Oil & Gas Operator | Sep 2020 |
| 1272 | Wineglass Production, LLC | Ranger, TX 76470 | Oil Operator | Feb 2026 |
| 1273 | Wineinger Dickie L Dba Royal Petroleum Co | Iowa Park, TX 76367 | Oil Operator | Nov 2022 |
| 1274 | Wineland Oil - LLC | Hays, KS 67601 | Oil Operator | Sep 2025 |
| 1275 | Wineridge Inc. | Austin, TX 78747 | Oil Operator | Feb 2026 |
| 1276 | Winfall Energy Inc N V | Vandergrift, PA 15690-2001 | Oil & Gas Operator | Dec 2025 |
| 1277 | Winfield Operating Company | Dallas, TX 75214 | Oil & Gas Operator | Feb 2026 |
| 1278 | Winfrey Oil Co., Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | May 2016 |
| 1279 | Wing Corporation | Houston, TX 77002 | Oil & Gas Operator | Jun 2000 |
| 1280 | Wingrove Operating, LLC | Odessa, TX 79760 | Oil Operator | Feb 2026 |
| 1281 | Wingrove Well Service, Inc. | Lueders, TX 79533 | Oil & Gas Operator | Nov 2023 |
| 1282 | Winkler L W & Son | Denver, CO 80222 | Oil & Gas Operator | Dec 2001 |
| 1283 | Winn Exploration Co., Inc. | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Feb 2026 |
| 1284 | Winn Operating, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Feb 2026 |
| 1285 | Winney Construction Company | Forks, WA 98331-0801 | Oil & Gas Operator | Jan 2013 |
| 1286 | Winona Oil & Gas | | Oil & Gas Operator | Sep 1996 |
| 1287 | Winright Resources Operating,LLC | Houston, TX 77007 | Oil & Gas Operator | Feb 2026 |
| 1288 | Winslow Operating Company, LLC | Austin, TX 78737 | Oil & Gas Operator | Feb 2026 |
| 1289 | Winslow, Harry C. | San Antonio, TX 78217 | Oil & Gas Operator | Feb 2026 |
| 1290 | Winston Land & Cattle Co., Inc. | Lufkin, TX 75901 | Oil & Gas Operator | Feb 2001 |
| 1291 | Winston Land & Cattle I, LTD. | Lufkin, TX 75902 | Oil & Gas Operator | Nov 2014 |
| 1292 | Winston Oil Co | Marietta, OH 45750 | Oil & Gas Operator | Nov 2025 |
| 1293 | Winter Ridge Energy LLC | Denver, CO 80202 | Oil & Gas Operator | Sep 2011 |
| 1294 | Winter'S Railroad Service, Inc | North Collins, NY 14111 | Gas Operator | Dec 2024 |
| 1295 | Winterfield Corp | | Oil Operator | Nov 2024 |
| 1296 | Winterscheid Oil, LLC | Olpe, KS 66865 | Oil Operator | Dec 2019 |
| 1297 | Wintershall Corporation | | Oil & Gas Operator | Oct 1989 |
| 1298 | Wintershall Oil | | Oil Operator | Sep 1985 |
| 1299 | Wintershall Oil & Gas Co | | Oil & Gas Operator | Feb 1980 |
| 1300 | Wintershall Oil & Gas Corp | Houston, TX 77027 | Oil & Gas Operator | Jul 1989 |