| 12201 | White Heart, Inc. | Georgetown, TX 78628 | Gas Operator | Jun 1996 |
| 12202 | White Knight Production LLC | Lafayette, LA 70505 | Oil & Gas Operator | Feb 2024 |
| 12203 | White Marlin Operating Company, LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2025 |
| 12204 | White Oak Operating Company LLC | Houston, TX 77077 | Oil & Gas Operator | Dec 2025 |
| 12205 | White Oak Production Company | Conway, AR 72034 | Oil & Gas Operator | Sep 2005 |
| 12206 | White Operating Company | Oklahoma City, OK 73159-7136 | Oil & Gas Operator | Sep 2025 |
| 12207 | White Pine Petroleum Corporation | Wichita, KS 67202 | Oil & Gas Operator | Dec 2019 |
| 12208 | White River Operating LLC | Gilmer, TX 75644 | Oil & Gas Operator | Sep 2025 |
| 12209 | White Rock Exploration, Inc. | Tyler, TX 75701 | Oil & Gas Operator | Jul 2021 |
| 12210 | White Rock Oil & Gas, LLC | Plano, TX 75024 | Oil & Gas Operator | Dec 2025 |
| 12211 | White Sail Resources LLC | Austin, TX 78731 | Oil Operator | Dec 2025 |
| 12212 | White Stride LLC | Piedmont, OK 73078 | Oil & Gas Operator | Dec 2025 |
| 12213 | White Wing Petroleum Inc. | Midland, TX 79702 | Oil & Gas Operator | Jul 2012 |
| 12214 | White'S Industrial Engine'S | Houston, TX 77070 | Oil & Gas Operator | Dec 2025 |
| 12215 | White, Cecil | Monahans, TX 79756 | Oil & Gas Operator | Mar 2017 |
| 12216 | White, E. C. Oil Co. | Whiteface, TX 79379 | Oil & Gas Operator | Nov 2012 |
| 12217 | White, Frank | Abilene, TX 79604 | Oil & Gas Operator | Dec 2025 |
| 12218 | White, Jack Operating | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2025 |
| 12219 | White, Oscar | Tuscola, TX 79562 | Oil & Gas Operator | Dec 2025 |
| 12220 | White, Ralph H. | Midland, TX 79701 | Oil & Gas Operator | Oct 2002 |
| 12221 | Whitehall Operating Inc. | Houston, TX 77040 | Oil & Gas Operator | Nov 1994 |
| 12222 | Whitehawk Production Company | Midland, TX 79710 | Oil & Gas Operator | Dec 2025 |
| 12223 | Whitehead Prod. Co., Inc. | Humble, TX 77338 | Oil & Gas Operator | Sep 2025 |
| 12224 | Whitehead Resources, LTD. | Buna, TX 77612 | Oil & Gas Operator | Dec 2025 |
| 12225 | Whiteman Industries Inc | Oklahoma City, OK 73101 | Oil & Gas Operator | May 2025 |
| 12226 | Whitemound Oil Company | FT Stockton, TX 79735 | Oil & Gas Operator | Jan 2017 |
| 12227 | Whitesands Operating, L.L.C. | Corpus Chrsti, TX 78466 | Oil & Gas Operator | Mar 2025 |
| 12228 | Whitesands Resources, L.L.C. | Corpus Chrsti, TX 78466 | Oil Operator | Jun 2019 |
| 12229 | Whiteside, H. W. | Abilene, TX 79604 | Oil & Gas Operator | Nov 1998 |
| 12230 | Whiteside, Robert | Comanche, TX 76442 | Oil & Gas Operator | May 1998 |
| 12231 | Whitfield Energy | Midland, TX 79702 | Oil & Gas Operator | Jan 1999 |
| 12232 | Whiting Oil And Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2025 |
| 12233 | Whiting Petroleum Corporation | Denver, CO 80290 | Oil & Gas Operator | Jan 2025 |
| 12234 | Whitlock, J.R. Operator | Amarillo, TX 79105 | Gas Operator | Jul 1997 |
| 12235 | Whitman-Dome Energy Corporation | San Diego, CA 92101 | Oil & Gas Operator | Nov 1996 |
| 12236 | Whitmar Exploration Company | Denver, CO 80202 | Oil & Gas Operator | Aug 2025 |
| 12237 | Whitson, James A., Jr. | Houston, TX 77063 | Oil & Gas Operator | Nov 2011 |
| 12238 | Whitt Investments, Inc. | Graham, TX 76450 | Oil Operator | Dec 2019 |
| 12239 | Whitt Oil & Gas, Inc. | Albany, TX 76430 | Oil & Gas Operator | Dec 2025 |
| 12240 | Whitt, W. J. | Albany, TX 76430 | Oil & Gas Operator | Nov 1996 |
| 12241 | Whitten Energy Corp. | Houston, TX 77090 | Oil & Gas Operator | Dec 2025 |
| 12242 | Whittier Operating Inc. | Houston, TX 77002 | Oil & Gas Operator | May 2007 |
| 12243 | Whittington Energy Co. | Melbourne, FL 32901 | Oil & Gas Operator | Dec 2025 |
| 12244 | Whittington Operating Company | Houston, TX 77069 | Oil & Gas Operator | Dec 2025 |
| 12245 | Whittington, G. R. | Amarillo, TX 79109 | Oil & Gas Operator | Jan 1994 |
| 12246 | Whittington, G. R. Estate | Amarillo, TX 79109 | Oil & Gas Operator | Mar 2008 |
| 12247 | Whittington, James C., Inc. | Dallas, TX 75214 | Oil & Gas Operator | Jan 2017 |
| 12248 | WHL Oil Corp. | Houston, TX 77227 | Oil & Gas Operator | Sep 1998 |
| 12249 | Wichita Falls Oil Expl. Co. | Holliday, TX 76366 | Oil & Gas Operator | Dec 2025 |
| 12250 | Wichita Operating Company, Inc. | Spring, TX 77393 | Oil & Gas Operator | May 2009 |
| 12251 | Wigington, James Robert | Ackerly, TX 79713 | Oil & Gas Operator | Aug 2003 |
| 12252 | Wilbanks Energy Corporation | Houston, TX 77036 | Oil & Gas Operator | Dec 2001 |
| 12253 | Wilbanks Exploration Inc | Denver, CO 80202 | Oil & Gas Operator | May 2002 |
| 12254 | Wilbanks Reserve Corporation | Denver, CO 80203 | Oil & Gas Operator | Dec 2025 |
| 12255 | Wilbanks, Bruce & G.L. | Midland, TX 79702 | Oil & Gas Operator | Aug 1996 |
| 12256 | Wilbanks, Bruce A. | Midland, TX 79701 | Oil & Gas Operator | Aug 1996 |
| 12257 | Wilbanks, Bruce A. Company | Midland, TX 79702 | Oil & Gas Operator | Dec 2025 |
| 12258 | Wilbrook Exploration, Inc. | Lingleville, TX 76461 | Oil & Gas Operator | Aug 2003 |
| 12259 | Wilchar, DR. R. B. | Fort Worth, TX 76185 | Oil & Gas Operator | Jan 2007 |
| 12260 | Wilco Operating | Monahans, TX 79756 | Oil & Gas Operator | Dec 2025 |
| 12261 | Wilco Properties, Inc. | Dallas, TX 75205 | Oil & Gas Operator | Jan 2004 |
| 12262 | Wilcox Energy Company LLC | Rule, TX 79547 | Oil & Gas Operator | Dec 2025 |
| 12263 | Wilcox Oil Company | Rule, TX 79547 | Oil & Gas Operator | Aug 2008 |
| 12264 | Wilcox Operating Corporation | Shreveport, LA 71115 | Oil & Gas Operator | Dec 2025 |
| 12265 | Wilcox Petroleum Operating LLC. | Rule, TX 79547 | Oil & Gas Operator | Dec 2025 |
| 12266 | Wild Cat Operating Company | Victoria, TX 77903 | Oil & Gas Operator | Mar 2008 |
| 12267 | Wild Horse Energy | Paducah, TX 79248 | Oil & Gas Operator | Dec 2025 |
| 12268 | Wildcat Cement Co. | Shamrock, TX 79079 | Oil & Gas Operator | May 2015 |
| 12269 | Wildcat Energy, LLC | Odessa, TX 79768 | Oil & Gas Operator | Jul 2021 |
| 12270 | Wildco Resources, Inc. | Tyler, TX 75713 | Oil & Gas Operator | Dec 2025 |
| 12271 | Wildfire Energy Operating LLC | Houston, TX 77224 | Oil & Gas Operator | Dec 2025 |
| 12272 | Wildhorse Oil & Gas Corporation | Ardmore, OK 73402 | Oil & Gas Operator | May 2019 |
| 12273 | Wildhorse Operating Company | Ardmore, OK 73402 | Oil & Gas Operator | Dec 2025 |
| 12274 | Wildhorse Resources MNGT Co, LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | May 2019 |
| 12275 | Wildhorse Resources, LLC | Houston, TX 77279 | Oil & Gas Operator | Feb 2015 |
| 12276 | Wiley Lease Co., LTD. | Jourdanton, TX 78026 | Oil Operator | Dec 2025 |
| 12277 | Wilham Investments, Inc. | Pampa, TX 79065 | Oil & Gas Operator | Jan 2020 |
| 12278 | Wilhite Productions | MC Dade, TX 78650 | Oil & Gas Operator | Oct 2012 |
| 12279 | Will Energy Corporation | Dallas, TX 75201 | Oil & Gas Operator | Aug 2025 |
| 12280 | Will-Drill Operating, L.L.C. | Shreveport, LA 71105 | Oil & Gas Operator | Dec 2025 |
| 12281 | Will-Drill Production Co., Inc. | Shreveport, LA 71105 | Oil & Gas Operator | Dec 2025 |
| 12282 | William Fleming Productions, LLC | Wichita Falls, TX 76305 | Oil Operator | Feb 2025 |
| 12283 | Williams Deville Operating, Inc. | Fort Worth, TX 76116 | Oil & Gas Operator | Dec 2025 |
| 12284 | Williams Oil Company | Midland, TX 79710 | Oil & Gas Operator | Dec 2025 |
| 12285 | Williams Petroleum Company, Inc. | Burkburnett, TX 76354 | Oil & Gas Operator | Dec 2025 |
| 12286 | Williams Prod. Gulf Coast, L.P. | Benbrook, TX 76126 | Oil & Gas Operator | Jan 2012 |
| 12287 | Williams Production RMT Company | Denver, CO 80202 | Oil & Gas Operator | Oct 2010 |
| 12288 | Williams, A. Oil | Wichita Falls, TX 76308 | Oil Operator | Dec 2025 |
| 12289 | Williams, Clayton Energy, Inc. | Houston, TX 77070 | Oil & Gas Operator | Dec 2025 |
| 12290 | Williams, Clayton Energy, L.L.C | Midland, TX 79705 | Oil & Gas Operator | May 1993 |
| 12291 | Williams, Clayton W., Jr., Inc. | Midland, TX 79705 | Oil & Gas Operator | Mar 2008 |
| 12292 | Williams, H. E. | Houston, TX 77002 | Oil & Gas Operator | Dec 1994 |
| 12293 | Williams, W. R. | Amarillo, TX 79105 | Oil & Gas Operator | Jun 2013 |
| 12294 | Williams, W. R., Inc. | Amarillo, TX 79105 | Oil & Gas Operator | Feb 2024 |
| 12295 | Williams-Cody, Inc. | Houston, TX 77060 | Oil & Gas Operator | May 1994 |
| 12296 | Williamson Oil & Gas, Inc. | Shreveport, LA 71166 | Oil & Gas Operator | Dec 2024 |
| 12297 | Williamson Operating Co. | Uvalde, TX 78801 | Oil & Gas Operator | Dec 2025 |
| 12298 | Williamson Operating Co., LLC | Stamps, AR 71860 | Oil & Gas Operator | Dec 2025 |
| 12299 | Williamson, J. C. | Midland, TX 79701 | Oil & Gas Operator | Jan 2001 |
| 12300 | Williamson, Ralph E. | Midland, TX 79702 | Oil & Gas Operator | Jan 2012 |