| 30201 | W.L. Ranch Inc. | Caldwell, TX 77836 | Oil & Gas Operator | May 2024 |
| 30202 | W.O.G., Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 30203 | W.P. Moore, Inc. | | Oil Operator | Dec 1983 |
| 30204 | W.P.P.I. Inc. | Westbrook, TX 79565 | Oil & Gas Operator | Jul 2013 |
| 30205 | W.R. Guffey LLC | Dallas, TX 75206 | Oil & Gas Operator | Jul 2020 |
| 30206 | W.R.A. Oil Co. | | Oil & Gas Operator | Jan 2024 |
| 30207 | W.S. Red Hancock, Inc. | | Oil Operator | Dec 1986 |
| 30208 | W.T. Waggoner Estate, Inc. | Vernon, TX 76385 | Oil Operator | May 2024 |
| 30209 | W.W. Energy | Luling, TX 78648 | Oil & Gas Operator | May 2024 |
| 30210 | W.W.R. Holding, LLC | Coleman, TX 76834 | Oil & Gas Operator | Mar 2008 |
| 30211 | W4 Energy, LLC | Humboldt, KS 66748 | Gas Operator | Nov 2015 |
| 30212 | W5 Oil, LLC | Olpe, KS 66865 | Oil Operator | Dec 2023 |
| 30213 | Wabash Energy Corporation | Lawrenceville, IL 62439 | Oil & Gas Operator | Dec 2009 |
| 30214 | Wabco Production Company | | Oil Operator | Jul 2021 |
| 30215 | Wachob Jack | Sapulpa, OK 74066 | Oil Operator | Dec 2014 |
| 30216 | Wachob Oil & Gas LLC | | Oil Operator | Jun 2015 |
| 30217 | Wachtman-Schroed | | Oil Operator | Aug 1986 |
| 30218 | Wachtman-Schroeder, A General Partnership | Pawhuska, OK 74056 | Oil Operator | Jan 2024 |
| 30219 | Wacker Oil Inc | Houston, TX 77002 | Oil & Gas Operator | Aug 1996 |
| 30220 | Waco Corp | | Oil Operator | Jun 1983 |
| 30221 | Waco Oil | | Oil Operator | Apr 1992 |
| 30222 | Waco Oil & Gas Co., Inc. | Glenville, WV 26351-0397 | Oil & Gas Operator | Dec 2021 |
| 30223 | Waco Petro, LP | Sulphur SPGS, TX 75483 | Oil Operator | Sep 2015 |
| 30224 | Waco Production Co. | Archer City, TX 76351 | Oil & Gas Operator | Sep 1993 |
| 30225 | Waddell Norman | Seminole, OK 74868-1244 | Oil & Gas Operator | Nov 1998 |
| 30226 | Waddell, Debora | Angola, NY 14059 | Gas Operator | Dec 2022 |
| 30227 | Waddell, Eric F. | Natoma, KS 67651 | Oil Operator | Aug 1995 |
| 30228 | Waddell, Kent | Abilene, TX 79606 | Oil & Gas Operator | Nov 2010 |
| 30229 | Waddy & Son Oilfield Services Inc | Dellroy, OH 44620-9762-9762 | Oil & Gas Operator | Dec 2023 |
| 30230 | Wade Energy Corporation | Carlsbad, NM 88220 | Oil & Gas Operator | Sep 1999 |
| 30231 | Wade Operating | Breckenridge, TX 76424 | Oil & Gas Operator | May 2024 |
| 30232 | Wade, Jim | Olney, TX 76374 | Oil & Gas Operator | May 2024 |
| 30233 | Wadi Exploration&Production,LLC | San Clemente, CA 92672 | Oil & Gas Operator | Jul 2020 |
| 30234 | Wadi Operating, LLC | Houston, TX 77079 | Oil & Gas Operator | May 2024 |
| 30235 | Wadi Petroleum Inc | Houston, TX 77014 | Oil & Gas Operator | May 2018 |
| 30236 | Wadkins T Roy | Bartlesville, OK 74006 | Oil & Gas Operator | Nov 2019 |
| 30237 | Wadley Bill & Son Drilling Co | Okmulgee, OK 74447-8934 | Oil & Gas Operator | Jan 2024 |
| 30238 | Waelder Oil & Gas, Inc. | Fort Smith, AR 72903 | Oil & Gas Operator | Jan 2024 |
| 30239 | Waffenbauch USA Corp. | Westfield, NY 14787 | Gas Operator | Dec 2022 |
| 30240 | Waggner, Fred | Wichita Falls, TX 76307 | Oil & Gas Operator | May 2024 |
| 30241 | Waggner, Robert | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2006 |
| 30242 | Waggoner Drilling Company | Bristow, OK 74010-0663 | Oil & Gas Operator | Jan 2014 |
| 30243 | Waggoner Oil & Gas Corp | Enid, OK 73703-1152 | Oil & Gas Operator | Feb 2024 |
| 30244 | Waggoner, John S. | Wichita Falls, TX 76307 | Oil & Gas Operator | May 2017 |
| 30245 | Waggoner, Ralph E. | Windthorst, TX 76389 | Oil & Gas Operator | Dec 2010 |
| 30246 | Waggoner, W. T., Estate | Vernon, TX 76385 | Oil & Gas Operator | Feb 2018 |
| 30247 | Waggoner-Baldridge Energy | | Oil Operator | Jun 1988 |
| 30248 | Waggoner-Baldridge Oper. Co, Inc | Dallas, TX 75206 | Oil & Gas Operator | Jan 1998 |
| 30249 | Wagman Petroleum, Inc. | Dallas, TX 75202 | Oil & Gas Operator | May 2024 |
| 30250 | Wagman, Brent A. | Dallas, TX 75202 | Oil & Gas Operator | May 2024 |
| 30251 | Wagner & Brown | Midland, TX 79702 | Oil & Gas Operator | Aug 2014 |
| 30252 | Wagner & Brown Limited Partnership | Midland, TX 79701 | Oil & Gas Operator | Feb 2013 |
| 30253 | Wagner & Brown LP | Midland, TX 79702-1714 | Oil & Gas Operator | Aug 2022 |
| 30254 | Wagner & Brown, LTD. | Midland, TX 79702 | Oil & Gas Operator | Aug 2014 |
| 30255 | Wagner & Wagner | Indiana, PA 15701-1273 | Gas Operator | Dec 2012 |
| 30256 | Wagner And Brown LTD Dba Wagner And Brown LTD | | Oil & Gas Operator | Sep 2002 |
| 30257 | Wagner Energy LLC | Midland, TX 79702 | Oil Operator | Jan 2024 |
| 30258 | Wagner Gas And Oil LLC | | Oil Operator | Nov 2021 |
| 30259 | Wagner Oil And Gas | | Oil & Gas Operator | Dec 2016 |
| 30260 | Wagner Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | May 2024 |
| 30261 | Wagner, Duer & Co. | Fort Worth, TX 76102 | Oil & Gas Operator | Jan 1999 |
| 30262 | Wagon Wheel Arklatex, LLC | | Oil & Gas Operator | May 2018 |
| 30263 | Wagon Wheel Production Company | Crawford, OK 73638-9502 | Oil & Gas Operator | Jan 2022 |
| 30264 | Wainoco Oil & Ga | | Oil & Gas Operator | Jan 1993 |
| 30265 | Wainoco Oil & Gas Company | Houston, TX 77024 | Oil & Gas Operator | Dec 2005 |
| 30266 | Wakefield Oil Company, Inc. | Winfield, KS 67156 | Oil Operator | Aug 1999 |
| 30267 | Wakita Operating, LLC | Perryton, TX 79070 | Gas Operator | May 2024 |
| 30268 | Wako Oil Co. LLC | Nocona, TX 76255 | Oil Operator | May 2024 |
| 30269 | Walbet | Monahans, TX 79756 | Oil & Gas Operator | Dec 1993 |
| 30270 | Walbet, Inc. | Monahans, TX 79756 | Oil & Gas Operator | May 2024 |
| 30271 | Walcher Oil, LC | Bellevue, WA 98009 | Oil & Gas Operator | Jan 2024 |
| 30272 | Walcher, Wayne E. | Wichita, KS 67202 | Oil & Gas Operator | Dec 2023 |
| 30273 | Walden E F | Ada, OK 74820 | Oil & Gas Operator | Aug 2014 |
| 30274 | Waldron David A | Wooster, OH 44691 | Oil & Gas Operator | Dec 2003 |
| 30275 | Waldrop, L. E. | Houston, TX 77024 | Oil & Gas Operator | Jun 1996 |
| 30276 | Walgann Oil & Gas Inc | Sperry, OK 74073 | Oil Operator | Sep 2023 |
| 30277 | Walkabout Operating, LLC | Lubbock, TX 79424 | Oil & Gas Operator | May 2024 |
| 30278 | Walker Corporation (The) | Oklahoma City, OK 73156 | Oil & Gas Operator | May 2006 |
| 30279 | Walker David Wayne | Okemah, OK 74859-9731 | Oil & Gas Operator | Sep 2022 |
| 30280 | Walker Energy Group | Houston, TX 77215-1089 | Oil & Gas Operator | Jun 1992 |
| 30281 | Walker Energy, LLC | | Oil & Gas Operator | Nov 2023 |
| 30282 | Walker Ervin G | | Oil Operator | Jul 1992 |
| 30283 | Walker Explor & Prod Corp | Unknown, UT 99999 | Oil & Gas Operator | Dec 1989 |
| 30284 | Walker Gas Company | Romney, WV 25757-0000 | Oil & Gas Operator | Dec 2018 |
| 30285 | Walker Jeffery Scott | Owasso, OK 74055-7420 | Oil Operator | Jan 2024 |
| 30286 | Walker Jr J C | | Oil & Gas Operator | Oct 1996 |
| 30287 | Walker Keith F | Ardmore, OK 73401 | Oil & Gas Operator | Jan 2019 |
| 30288 | Walker L Willis | | Oil Operator | Dec 1985 |
| 30289 | Walker La. Properties | | Oil & Gas Operator | Oct 1990 |
| 30290 | Walker Management Company | | Oil & Gas Operator | Apr 1988 |
| 30291 | Walker Oil & Gas Co LLC* Keith F | | Oil & Gas Operator | Jun 2011 |
| 30292 | Walker Oil And Gas Inc | | Oil & Gas Operator | Jun 2021 |
| 30293 | Walker Oil And Gas LTD | Snyder, TX 79550 | Oil Operator | May 2024 |
| 30294 | Walker Operating (I) | Wichita Falls, TX 76308 | Oil Operator | May 2024 |
| 30295 | Walker Paul | Duncan, OK 73533-9782 | Oil & Gas Operator | Feb 2022 |
| 30296 | Walker R J Oil Co Inc | | Oil & Gas Operator | May 2003 |
| 30297 | Walker Resources Co, LLC | | Oil & Gas Operator | Dec 2013 |
| 30298 | Walker Tank Service, Inc | Utica, KS 67584 | Oil Operator | Aug 2022 |
| 30299 | Walker Well Service Inc | Big Bend, WV 26136-0000 | Oil & Gas Operator | Dec 2021 |
| 30300 | Walker'S Fruit Farms, LLC | Forestville, NY 14062 | Gas Operator | Dec 2022 |