| 31201 | Weilert Enterpri | | Oil Operator | Sep 1988 |
| 31202 | Weilert Michael | | Oil Operator | Oct 1993 |
| 31203 | Weilert, S.R. | Wichita, KS 67216 | Oil Operator | Oct 1998 |
| 31204 | Weimer & Fitzhugh | Tulsa, OK 74103-4102 | Oil & Gas Operator | Dec 1993 |
| 31205 | Weinkauf Petroleum, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Sep 2024 |
| 31206 | Weins Horton L | Sand Springs, OK 74063 | Oil & Gas Operator | Aug 2024 |
| 31207 | Weinstrom Petroleum | Devine, TX 78016 | Oil Operator | Dec 2024 |
| 31208 | Weinsz Oil & Gas Inc | North Canton, OH 44720 | Oil & Gas Operator | Dec 2003 |
| 31209 | Weir Oil Co. Inc. | | Oil & Gas Operator | Dec 2007 |
| 31210 | Weiser-Brown Oil Co | Magnolia, AR 71754 | Oil Operator | Jul 2024 |
| 31211 | Weiser-Brown Operating Company | Magnolia, AR 71754 | Oil & Gas Operator | Dec 2024 |
| 31212 | Weiss Drilling Inc | Jerusalem, OH 43747 | Oil & Gas Operator | Dec 2023 |
| 31213 | Weiss Oil Co. | Streator, IL 61364 | Oil & Gas Operator | Dec 1997 |
| 31214 | Weitzman Irvin | | Oil & Gas Operator | Sep 1988 |
| 31215 | Wejco, Inc. | Rising Star, TX 76471 | Oil & Gas Operator | Dec 2024 |
| 31216 | Welch Energy LLC | Drumright, OK 74030 | Oil Operator | Sep 2024 |
| 31217 | Welch Family Trust | Ada, OK 74820-9643 | Oil & Gas Operator | Apr 2015 |
| 31218 | Welch Oil & Gas Company | Parkersburg, WV 26104-0000 | Oil & Gas Operator | Jun 2013 |
| 31219 | Welcome Well Serv. & Boykin Bros | Abilene, TX 79604 | Oil & Gas Operator | Apr 1995 |
| 31220 | Weldbank Energy Corp | Warren, PA 16365-5114 | Oil & Gas Operator | Dec 2023 |
| 31221 | Welder Exploration & Prod., Inc. | San Antonio, TX 78212 | Oil & Gas Operator | Dec 2022 |
| 31222 | Welder Operating, Inc. | San Antonio, TX 78205 | Oil & Gas Operator | Mar 2001 |
| 31223 | Welder-Heyer Energy, Inc. | San Antonio, TX 78205 | Oil & Gas Operator | Feb 2001 |
| 31224 | Welderxp LTD. | San Antonio, TX 78212 | Oil & Gas Operator | Dec 2024 |
| 31225 | Weldon Corporation | Houston, TX 77056 | Oil Operator | Feb 2020 |
| 31226 | Welhausen Operating Co., Inc. | Beeville, TX 78104 | Oil & Gas Operator | Aug 2003 |
| 31227 | Welhausen Operating Company, LP | Beeville, TX 78104 | Oil & Gas Operator | Nov 2016 |
| 31228 | Well Management Services Inc | | Oil & Gas Operator | Dec 2001 |
| 31229 | Well Recycling Company | Olney, TX 76374 | Oil Operator | Aug 2005 |
| 31230 | Well Renewal Inc | Tulsa, OK 74103-0091 | Oil Operator | Mar 2015 |
| 31231 | Well Tech Oil And Gas, Inc. | Wichita, KS 67206 | Oil Operator | Sep 2020 |
| 31232 | Well Water Management | | Oil & Gas Operator | Aug 2024 |
| 31233 | Well-Co Solutions, LLC | Batson, TX 77519 | Oil Operator | Dec 2024 |
| 31234 | Wellco Energy Inc | Harrah, OK 73045 | Oil & Gas Operator | Sep 2024 |
| 31235 | Wellco Production LLC | Purcell, OK 73080-6833 | Oil & Gas Operator | Sep 2024 |
| 31236 | Wellington Operating Company | | Oil & Gas Operator | Oct 2024 |
| 31237 | Wellmaster Production Co LLC | | Oil & Gas Operator | Jul 2015 |
| 31238 | Wells Allen W | Barnsdall, OK 74002 | Oil & Gas Operator | Sep 2024 |
| 31239 | Wells Edward K | Sapulpa, OK 74066-4243 | Oil & Gas Operator | Jun 2004 |
| 31240 | Wells Energy Com | | Oil & Gas Operator | Mar 1994 |
| 31241 | Wells Jimme D | Ponca City, OK 74604 | Oil Operator | Sep 2024 |
| 31242 | Wells Oil Compan | | Gas Operator | Sep 1984 |
| 31243 | Wells Oil, LLC | Gridley, KS 66852 | Oil Operator | Jul 2024 |
| 31244 | Wells Oilfield Services, Inc. | Graham, TX 76450 | Oil & Gas Operator | Dec 2024 |
| 31245 | Wells, Michael E. | Springville, NY 14141 | Gas Operator | Dec 2023 |
| 31246 | Wells-Battelstei | | Oil & Gas Operator | Mar 1993 |
| 31247 | Wells-Battelstein O&G, Inc. | | Gas Operator | Dec 1986 |
| 31248 | Wellstar Corporation | Northglenn, CO 80233 | Oil & Gas Operator | Sep 2024 |
| 31249 | Wellsville Oil C | | Oil Operator | Dec 1996 |
| 31250 | Wellsville Oil Co | Wellsville, KS 66092 | Oil Operator | Sep 2000 |
| 31251 | Wellwin Drilling | | Oil & Gas Operator | Dec 1994 |
| 31252 | Wellwin Drilling Corporation | Wellington, KS 67152 | Oil & Gas Operator | Jul 2024 |
| 31253 | Welsh Hills Oil & Gas Co | Newark, OH 43055 | Oil & Gas Operator | Dec 1999 |
| 31254 | Wem Joint Venture | Gillette, WY 82716 | Oil & Gas Operator | Sep 2015 |
| 31255 | Wem Operating, LLC | Provo, UT 84604 | Oil & Gas Operator | Sep 2024 |
| 31256 | Wema Natural Res, Inc | Sharon Grove, KY 42280 | Oil Operator | Dec 2021 |
| 31257 | Wen-Be | Jourdanton, TX 78026 | Oil & Gas Operator | Dec 2024 |
| 31258 | Wendy Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2024 |
| 31259 | Wenert Trich | | Oil & Gas Operator | Oct 1988 |
| 31260 | Wenert Trich Oil | | Oil & Gas Operator | Jul 1990 |
| 31261 | Wenexco, Inc. | Streetman, TX 75859 | Oil & Gas Operator | Dec 2024 |
| 31262 | Wengerd, Noah A. | Sherman, NY 14781 | Gas Operator | Dec 2023 |
| 31263 | Wenner Petroleum Corp | Englewood, CO 80111 | Oil & Gas Operator | Dec 1986 |
| 31264 | Wente Exploration Inc | Oklahoma City, OK 73102 | Gas Operator | Oct 2011 |
| 31265 | Wentworth Energy, Inc. | Palestine, TX 75801 | Oil & Gas Operator | Jun 2009 |
| 31266 | Wentworth Operating Company | Oklahoma City, OK 73162-1863 | Oil & Gas Operator | Sep 2024 |
| 31267 | Werner Oil Farm | Warren, PA 16365-3608 | Oil & Gas Operator | Dec 2017 |
| 31268 | Werner Oil, Inc. | Borger, TX 79008 | Oil & Gas Operator | Sep 1996 |
| 31269 | Wernette, Louis J. | Hondo, TX 78861 | Oil & Gas Operator | Sep 2023 |
| 31270 | Werth Exploration Trust | | Oil Operator | Dec 2013 |
| 31271 | Wes Pro, Inc. | Jacksboro, TX 76458 | Oil Operator | Jan 2013 |
| 31272 | Wes-Mor Drilling, Inc. | Graham, TX 76450 | Oil & Gas Operator | Dec 2024 |
| 31273 | Wes-Mor Oil & Gas, Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 1994 |
| 31274 | Wes-Tex Drilling Company | Abilene, TX 79604 | Oil & Gas Operator | Jan 2000 |
| 31275 | Wes-Tex Oil Co. (I) | Bangs, TX 76823 | Oil & Gas Operator | Dec 2024 |
| 31276 | Wesco Operating, Inc. | Casper, WY 82602 | Oil & Gas Operator | Oct 2024 |
| 31277 | Wesco Production LLC | | Oil & Gas Operator | Jul 2024 |
| 31278 | Wescor LLC | Hartville, OH 44632 | Oil & Gas Operator | Dec 2023 |
| 31279 | Wesgra Corporation | Mexican Hat, UT 84531 | Oil & Gas Operator | Sep 2024 |
| 31280 | Wesla Oil & Gas Co., Inc. | | Oil & Gas Operator | Jun 2001 |
| 31281 | Wespac Energy, LLC | San Antonio, TX 78217 | Oil & Gas Operator | Dec 2019 |
| 31282 | Wessel Oil And Gas | Cushing, OK 74023-9580 | Oil & Gas Operator | Mar 2015 |
| 31283 | Wessely Energy Company | Dallas, TX 75206 | Oil & Gas Operator | May 2001 |
| 31284 | Wessely Energy Corporation | | Oil & Gas Operator | Feb 1989 |
| 31285 | West 40 Production | Ness City, KS 67560 | Oil Operator | Apr 1998 |
| 31286 | West American Energy Corporation | | Oil & Gas Operator | Sep 2024 |
| 31287 | West Barrytown Services, LLC | Gilbertown, AL 36908 | Oil & Gas Operator | Mar 2020 |
| 31288 | West Bay Exploration Company | Muenster, TX 76252 | Oil & Gas Operator | Aug 2024 |
| 31289 | West Co., The | Wichita Falls, TX 76307 | Oil & Gas Operator | Jun 2016 |
| 31290 | West Coast Oil Company | | Oil Operator | Dec 1996 |
| 31291 | West Coast Operators Inc. | | Oil & Gas Operator | Sep 2024 |
| 31292 | West Delta Oil Co. | | Oil & Gas Operator | Jul 2000 |
| 31293 | West Energy Operating LLC | | Oil & Gas Operator | Sep 2024 |
| 31294 | West Fox SWD LLC | Ratliff City, OK 73481 | Oil Operator | Oct 2024 |
| 31295 | West Gas Inc | | Oil & Gas Operator | Dec 2017 |
| 31296 | West Hopkins Petroleum Co LP | | Oil & Gas Operator | Sep 2024 |
| 31297 | West Inland Energy, Inc. | N Richlnd HLS, TX 76182 | Oil & Gas Operator | Dec 2024 |
| 31298 | West Kansas Oil | | Oil Operator | Jul 1992 |
| 31299 | West Kansas Oil Corporation | Oberlin, KS 67749 | Oil Operator | Aug 1998 |
| 31300 | West Largo Corp | Tulsa, OK 74137 | Oil & Gas Operator | Sep 2023 |