| 12201 | Worldwide Energy Corp. | Freer, TX 78357 | Oil & Gas Operator | Jan 1997 |
| 12202 | Worldwide Exploration, Inc | Kilgore, TX 75663 | Oil & Gas Operator | Mar 2002 |
| 12203 | Worsham-Steed Gas Storage, L.P. | Houston, TX 77002 | Oil & Gas Operator | Aug 2010 |
| 12204 | Worsham-Steed Gas Storage, LLC | Tulsa, OK 74172 | Oil & Gas Operator | Mar 2024 |
| 12205 | Wortham Oil & Gas | Conroe, TX 77301 | Oil & Gas Operator | Mar 2024 |
| 12206 | Wortham Operating, LLC | Holliday, TX 76366 | Oil & Gas Operator | Apr 2023 |
| 12207 | Wortham, E. H. | Holliday, TX 76366 | Oil & Gas Operator | Mar 2008 |
| 12208 | Wortham, J. R. | Wichita Falls, TX 76310 | Oil & Gas Operator | Aug 2023 |
| 12209 | Wortham, Michael R. | Holliday, TX 76366 | Oil & Gas Operator | Mar 2008 |
| 12210 | WP Oil & Gas Exploration LLC | Loving, TX 76460 | Oil Operator | Mar 2024 |
| 12211 | WPH Operating Company | Amarillo, TX 79105 | Oil & Gas Operator | Mar 2017 |
| 12212 | WPX Energy Gulf Coast, LP | Benbrook, TX 76126 | Oil & Gas Operator | May 2012 |
| 12213 | WPX Energy Permian, LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2024 |
| 12214 | WRD Oil, LLC | Floresville, TX 78114 | Oil & Gas Operator | Mar 2024 |
| 12215 | WRD Operating LLC | Houston, TX 77056 | Oil & Gas Operator | Mar 2024 |
| 12216 | Wright Aurora Enterprises, LLC | Canyon Lake, TX 78133 | Oil & Gas Operator | May 2020 |
| 12217 | Wright Brothers Energy, Inc. | Boerne, TX 78006 | Oil & Gas Operator | Mar 2024 |
| 12218 | Wright Brothers Petroleum, LTD. | San Antonio, TX 78212 | Oil & Gas Operator | May 2002 |
| 12219 | Wright Oil And Gas, LLC | Benbrook, TX 76126 | Oil & Gas Operator | Mar 2024 |
| 12220 | Wright Operating, Inc. | Denison, TX 75020 | Oil & Gas Operator | Mar 2024 |
| 12221 | Wright Trucking, Inc. | Weatherford, OK 73096 | Oil & Gas Operator | Feb 2019 |
| 12222 | Wright, Robert W. | Graham, TX 76450 | Oil & Gas Operator | Mar 2024 |
| 12223 | Wright, Robert W. Inc. | Graham, TX 76450 | Oil & Gas Operator | Dec 2000 |
| 12224 | WRT Energy Corporation | Oklahoma City, OK 73118 | Oil & Gas Operator | May 1998 |
| 12225 | WSF, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Jun 2013 |
| 12226 | WSM | New Braunfels, TX 78132 | Oil Operator | Mar 2024 |
| 12227 | WTG Exploration | Midland, TX 79705 | Oil & Gas Operator | Mar 2024 |
| 12228 | WTG Exploration Inc | Midland, TX 79705 | Oil & Gas Operator | Dec 2023 |
| 12229 | WTP Energy, Inc. | Snyder, TX 79549 | Oil & Gas Operator | Mar 2024 |
| 12230 | WTXR Operating (Texas), Inc. | Carrollton, TX 75007 | Oil Operator | Mar 2024 |
| 12231 | Wy Woodland Operating, LLC | Covington, TX 76636 | Oil & Gas Operator | Mar 2024 |
| 12232 | Wyatt Permian, LLC | Corpus Chrsti, TX 78426 | Oil & Gas Operator | Mar 2024 |
| 12233 | Wyco Oil & Gas LLC | Odessa, TX 79768 | Oil & Gas Operator | Mar 2024 |
| 12234 | Wylie Bros. Prod. & DRGL. Co,Inc | Baird, TX 79504 | Oil & Gas Operator | Mar 2024 |
| 12235 | Wylie, Fred, Jr. | Moran, TX 76464 | Oil & Gas Operator | Oct 2022 |
| 12236 | Wynco Energy, Inc. | Spring, TX 77393 | Oil & Gas Operator | Mar 2024 |
| 12237 | Wynn-Crosby Energy, Inc. | Houston, TX 77002 | Oil & Gas Operator | May 2005 |
| 12238 | Wynn-Crosby Operating, LTD. | Dallas, TX 75201 | Oil & Gas Operator | Mar 2024 |
| 12239 | Wynne Petroleum Co. | Fort Worth, TX 76116 | Oil & Gas Operator | Nov 1997 |
| 12240 | Wyoming Diamond A LLC | Cheyenne, WY 82007 | Gas Operator | Mar 2024 |
| 12241 | X Stone Energy LLC. | Plano, TX 75093 | Oil & Gas Operator | Mar 2024 |
| 12242 | X-L Energy Company | El Paso, TX 79902 | Oil & Gas Operator | Mar 2024 |
| 12243 | X72 Operating Corp. | Plano, TX 75025 | Oil & Gas Operator | Mar 2024 |
| 12244 | XCL-Texas, Inc. | Lafayette, LA 70503 | Oil & Gas Operator | Nov 2000 |
| 12245 | Xenon Energy, Inc. | Plano, TX 75074 | Oil & Gas Operator | Aug 2003 |
| 12246 | Xeric Oil & Gas Company | Midland, TX 79702 | Oil & Gas Operator | Jul 1997 |
| 12247 | Xeric Oil & Gas Corporation | Midland, TX 79702 | Oil & Gas Operator | Apr 2014 |
| 12248 | Xet, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Aug 2017 |
| 12249 | Xhorizons Energy LLC | Houston, TX 77079 | Oil Operator | Mar 2024 |
| 12250 | Xog Operating LLC | Midland, TX 79702 | Oil & Gas Operator | Mar 2024 |
| 12251 | Xog Resources, LLC | Spring, TX 77379 | Oil & Gas Operator | Mar 2024 |
| 12252 | Xophi Energy, LLC | Arlington, TX 76006 | Oil & Gas Operator | Mar 2024 |
| 12253 | Xplor Energy Operating Co. | Houston, TX 77079 | Oil & Gas Operator | Jan 2012 |
| 12254 | Xplore Operating, LLC | Arlington, TX 76001 | Oil & Gas Operator | Mar 2024 |
| 12255 | Xri Disposal Holdings, LLC | Midland, TX 79701 | Oil & Gas Operator | Mar 2024 |
| 12256 | Xstar Resources LLC | Jacksboro, TX 76458 | Oil & Gas Operator | Mar 2024 |
| 12257 | Xta Resources LLC | Del Valle, TX 78617 | Oil & Gas Operator | Mar 2024 |
| 12258 | XTO Energy Inc. | Spring, TX 77389 | Oil & Gas Operator | Mar 2024 |
| 12259 | XTO Offshore Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | Jul 2010 |
| 12260 | Xtra Energy, LLC | Fort Worth, TX 76161 | Oil & Gas Operator | Mar 2024 |
| 12261 | Xtreme Operating Company LLC | Flower Mound, TX 75022 | Oil Operator | Mar 2024 |
| 12262 | Xyz Oil, Inc. | Muenster, TX 76252 | Oil & Gas Operator | Mar 2024 |
| 12263 | Y Oil Company Inc. | Cameron, TX 76520 | Oil & Gas Operator | Mar 2024 |
| 12264 | Yale Oil Association, Inc. | Oklahoma City, OK 73105 | Oil & Gas Operator | Mar 2024 |
| 12265 | Yanahosa, Inc. | Kountze, TX 77625 | Oil Operator | Mar 2024 |
| 12266 | Yarberry Operating, LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | Mar 2024 |
| 12267 | Yarberry, E. E. | Wichita Falls, TX 76308 | Oil & Gas Operator | Oct 2015 |
| 12268 | Yarborough Oil & Gas L.P. | Midland, TX 79701 | Oil & Gas Operator | Oct 2000 |
| 12269 | Yarborough, W. B. | Midland, TX 79701 | Oil & Gas Operator | Nov 1995 |
| 12270 | Yates Drilling Company | Artesia, NM 88210 | Oil & Gas Operator | Dec 2021 |
| 12271 | Yates Energy Corporation | Roswell, NM 88202 | Oil & Gas Operator | Mar 2024 |
| 12272 | Yates Industries, LLC | Santa Fe, NM 87501 | Oil & Gas Operator | Mar 2024 |
| 12273 | Yates Oil & Gas Company | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 12274 | Yates, Harvey E. Company | Roswell, NM 88201 | Oil & Gas Operator | Dec 2002 |
| 12275 | Yeates Development Corporation | Breckenridge, TX 76424 | Oil & Gas Operator | Mar 2024 |
| 12276 | Yeates, F. L. | Breckenridge, TX 76424 | Oil & Gas Operator | Oct 1997 |
| 12277 | Yegen E C | Casper, WY 82604 | Oil & Gas Operator | Mar 2015 |
| 12278 | Yellow Rose Oil & Gas Oper. Inc. | Cisco, TX 76437 | Oil & Gas Operator | Mar 2024 |
| 12279 | Yellow Rose Oil & Gas Operating | Cisco, TX 76437 | Oil & Gas Operator | Jan 1996 |
| 12280 | Yellowstone Petroleums Inc. | Canada, 00100 | Oil & Gas Operator | Nov 2023 |
| 12281 | Yentzen Investments, Inc. | Sugar Land, TX 77478 | Oil Operator | May 1993 |
| 12282 | Yep, LLC | Palestine, TX 75802 | Oil Operator | Jan 2017 |
| 12283 | Yet Profits, L.L.C. | Wichita Falls, TX 76308 | Oil Operator | Mar 2024 |
| 12284 | Yeti Exploration, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2024 |
| 12285 | Ynew Corporation | Austin, TX 78747 | Oil & Gas Operator | Mar 2024 |
| 12286 | Yobel, Inc. | Olney, TX 76374 | Oil & Gas Operator | Mar 2024 |
| 12287 | Yocham Oil And Gas Company | Midland, TX 79702 | Oil & Gas Operator | Mar 2024 |
| 12288 | Yordes Energy, LLC | El Campo, TX 77437 | Oil Operator | Mar 2024 |
| 12289 | York & Price Petroleum Corp. | San Antonio, TX 78218 | Oil & Gas Operator | Jul 2004 |
| 12290 | York E & P, LLC | Boling, TX 77420 | Oil & Gas Operator | Mar 2024 |
| 12291 | Young Marshall R Oil Co | Fort Worth, TX 76107 | Oil & Gas Operator | Mar 2011 |
| 12292 | Young Resources, Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | Aug 1999 |
| 12293 | Young, Clint Inc. | Graham, TX 76450 | Oil & Gas Operator | Mar 2024 |
| 12294 | Young, John H., Inc. | Houston, TX 77027 | Oil & Gas Operator | Mar 2024 |
| 12295 | Young, L. M. | Brownwood, TX 76804 | Oil & Gas Operator | Aug 2003 |
| 12296 | Youngblood, C. S. III | Pampa, TX 79065 | Oil & Gas Operator | Dec 2001 |
| 12297 | Younger Energy Company | Wichita, KS 67207 | Oil & Gas Operator | Mar 2024 |
| 12298 | Yturri, Robert & John | San Antonio, TX 78205 | Oil & Gas Operator | Aug 2003 |
| 12299 | Yturria, Frank D. | Brownsville, TX 78520 | Oil & Gas Operator | Mar 2008 |
| 12300 | Yucca Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2024 |