| 30301 | Walker'S Well Service | Gladewater, TX 75647 | Oil & Gas Operator | Aug 2003 |
| 30302 | Walker, Ervin Gilbert | Medicine Lodge, KS 67104 | Oil & Gas Operator | Apr 2020 |
| 30303 | Walker, Harrel L. | La Vernia, TX 78121 | Oil & Gas Operator | May 2023 |
| 30304 | Walker, Kent | Midland, TX 79704 | Oil & Gas Operator | Jun 2004 |
| 30305 | Walker, Tigner | Shreveport, LA 71138 | Oil & Gas Operator | Feb 2005 |
| 30306 | Walker-Wilson | | Oil & Gas Operator | Jul 1999 |
| 30307 | Walking X Oil Co. | Whiteface, TX 79379 | Oil & Gas Operator | May 2024 |
| 30308 | Wall Shelby | | Oil & Gas Operator | Oct 1998 |
| 30309 | Wallace Acid-Frac LLC | Seminole, OK 74818-1281 | Oil & Gas Operator | May 2013 |
| 30310 | Wallace D. Putman, Jr. | | Oil Operator | Jan 2024 |
| 30311 | Wallace Energy I | | Oil Operator | Mar 1990 |
| 30312 | Wallace Energy, Inc. | Denver, CO 80202-4327 | Oil Operator | Jun 2015 |
| 30313 | Wallace George C | Oklahoma City, OK 73120-0135 | Oil Operator | Nov 1994 |
| 30314 | Wallace John J Jr | Cooperstown, PA 16317-1909 | Oil & Gas Operator | Dec 2023 |
| 30315 | Wallace Oil & Ga | | Gas Operator | Oct 1995 |
| 30316 | Wallace Oil & Gas Inc | Oklahoma City, OK 73156 | Oil & Gas Operator | May 2024 |
| 30317 | Wallace Operating Company | | Oil & Gas Operator | Sep 1986 |
| 30318 | Wallace Sherrie D | Dewey, OK 74029-3924 | Oil & Gas Operator | Jan 2024 |
| 30319 | Wallace, Drexel And June | New Milton, WV 26411-0000 | Oil & Gas Operator | Dec 2021 |
| 30320 | Wallace, Sharon J. | Clymer, NY 14724 | Gas Operator | Dec 2022 |
| 30321 | Wallen Production Co. | Midland, TX 79702 | Oil & Gas Operator | Aug 1996 |
| 30322 | Waller Brothers, Inc. | | Oil & Gas Operator | Jul 2004 |
| 30323 | Waller Oil, LLC | Stockton, KS 67669 | Oil Operator | Dec 2023 |
| 30324 | Waller, C.W. Oil Co. | Albany, TX 76430 | Oil & Gas Operator | May 2024 |
| 30325 | Wallick Petroleum Co | Reynoldsburg, OH 43068 | Oil & Gas Operator | Dec 1994 |
| 30326 | Walling, Buster H | | Oil Operator | Jul 2022 |
| 30327 | Wallis Energy, Inc. | Austin, TX 78746 | Oil & Gas Operator | May 2024 |
| 30328 | Walls Energy, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Aug 2003 |
| 30329 | Walls, Charles A. | Caney, KS 67333 | Oil Operator | Aug 2016 |
| 30330 | Walls, G. M. & Frances, Inc. | Pampa, TX 79066 | Oil & Gas Operator | May 2024 |
| 30331 | Wallway M J | Casper, WY 82601 | Oil & Gas Operator | Jan 1993 |
| 30332 | Wally Tucker | | Gas Operator | Dec 1994 |
| 30333 | Walrath Oil Co. LLC | | Oil Operator | Mar 2024 |
| 30334 | Walsh & Watts Inc | Aledo, TX 76008 | Oil & Gas Operator | May 2024 |
| 30335 | Walsh Jr F Howard | Fort Worth, TX 76102-4773 | Oil & Gas Operator | Dec 2023 |
| 30336 | Walsh Jr F Howard Opr Co Inc | Fort Worth, TX 76102-4773 | Oil & Gas Operator | Feb 2016 |
| 30337 | Walsh Petroleum, Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 2022 |
| 30338 | Walsh Production Inc | | Oil & Gas Operator | Nov 2008 |
| 30339 | Walsh Resources, Inc. | Tyler, TX 75713 | Oil & Gas Operator | May 2024 |
| 30340 | Walsh, F H Jr. Operating Co. Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Oct 2019 |
| 30341 | Walsh, F. Howard, Jr. | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 1994 |
| 30342 | Walter Black Warrior Basin LLC | | Gas Operator | Dec 2014 |
| 30343 | Walter E & Bernice N Darnall | | Oil Operator | Jan 2024 |
| 30344 | Walter Exploration Company | Dallas, TX 75206 | Oil & Gas Operator | May 2024 |
| 30345 | Walter Exploration Inc | Dallas, TX 75206 | Oil & Gas Operator | May 2009 |
| 30346 | Walter H. Husfeld Oil Co LLC | Bowie, TX 76230 | Oil & Gas Operator | May 2024 |
| 30347 | Walter Oil & Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | May 2024 |
| 30348 | Walter T. Lanaux | | Oil & Gas Operator | Nov 1990 |
| 30349 | Walter W. Heard, Jr. | | Oil & Gas Operator | Dec 1995 |
| 30350 | Walters Drilling | | Oil Operator | Mar 1988 |
| 30351 | Walters Frank | Pernell, OK 73076 | Oil & Gas Operator | Sep 2014 |
| 30352 | Walters Oil Company | Elmore City, OK 73433-9505 | Oil & Gas Operator | Feb 2024 |
| 30353 | Walters Oil LLC | | Oil Operator | Apr 2020 |
| 30354 | Walters Oil Well Service Inc | Walters, OK 73572-0467 | Oil & Gas Operator | Nov 2000 |
| 30355 | Walters Production | | Oil Operator | Mar 2005 |
| 30356 | Walterscheid, A. D. | Muenster, TX 76252 | Oil & Gas Operator | Dec 2014 |
| 30357 | Walterscheid, R. F. | Muenster, TX 76252 | Oil & Gas Operator | Oct 1993 |
| 30358 | Waltman Family LP | Maud, OK 74854-2603 | Oil Operator | Jan 2024 |
| 30359 | Waltman Oil & Gas | Maud, OK 74854-9739 | Oil Operator | Sep 2001 |
| 30360 | Walton Producing Company | Breckenridge, TX 76424 | Oil & Gas Operator | Jul 2005 |
| 30361 | Walton Producing Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | May 2024 |
| 30362 | Walton Properties LTD. | Midland, TX 79702 | Oil & Gas Operator | Feb 2004 |
| 30363 | Walton, James A. | Midland, TX 79702 | Oil & Gas Operator | Oct 1994 |
| 30364 | Walton, Tara | Copan, OK 74022 | Oil Operator | Sep 2023 |
| 30365 | Walton, W. W. | Breckenridge, TX 76424 | Oil & Gas Operator | Sep 1994 |
| 30366 | Wam Energy Corporation | Dallas, TX 75206 | Oil & Gas Operator | Dec 2016 |
| 30367 | Wandering Star Partners #1 LLLP | | Oil & Gas Operator | Apr 2015 |
| 30368 | Wandoo Energy, LLC | The Woodlands, TX 77382 | Oil & Gas Operator | May 2024 |
| 30369 | Wandover Charles T SR | Inverness, FL 34452-7527 | Oil & Gas Operator | Dec 2016 |
| 30370 | Wapiti Energy, LLC | Houston, TX 77024 | Oil & Gas Operator | Jul 2006 |
| 30371 | Wapiti Oil & Gas LLC | Houston, TX 77024 | Oil Operator | Dec 2011 |
| 30372 | Wapiti Operating, LLC | Houston, TX 77043 | Oil & Gas Operator | May 2024 |
| 30373 | War Cry, LLC | Russell, KS 67665 | Oil Operator | Jan 2024 |
| 30374 | Warbonnet Exploration Company | Houston, TX 77056 | Oil & Gas Operator | Apr 2016 |
| 30375 | Warcloud Resources LLC | | Oil & Gas Operator | Mar 2021 |
| 30376 | Ward & Son* Alfred | | Oil & Gas Operator | Jun 2023 |
| 30377 | Ward Feed Yard, Inc. | Larned, KS 67550 | Oil & Gas Operator | Mar 2016 |
| 30378 | Ward Gas Marketing Inc | Enid, OK 73702 | Oil & Gas Operator | Sep 2011 |
| 30379 | Ward Kelly | Drumright, OK 74030-5661 | Oil & Gas Operator | Feb 2015 |
| 30380 | Ward M Haggard Oil And Gas Exploration Inc | | Oil Operator | Mar 2024 |
| 30381 | Ward Oil Co. | Kilgore, TX 75663 | Oil & Gas Operator | May 2024 |
| 30382 | Ward Oil Company An Okla Corp | McAlester, OK 74501 | Oil & Gas Operator | Feb 1993 |
| 30383 | Ward Petroleum Corporation | Enid, OK 73702 | Oil & Gas Operator | Jan 2024 |
| 30384 | Ward Trust | Spring, TX 77383 | Oil & Gas Operator | May 2013 |
| 30385 | Ward, E. B. | Alice, TX 78333 | Oil & Gas Operator | Jun 2001 |
| 30386 | Ward, L. S. | Graham, TX 76450 | Oil & Gas Operator | Jun 2001 |
| 30387 | Ward-Williston Company | | Oil & Gas Operator | Apr 2014 |
| 30388 | Ward-Williston Drilling Co. | | Oil & Gas Operator | Dec 1994 |
| 30389 | Warden John Inc | Wellston, OK 74881-8827 | Oil & Gas Operator | Nov 2014 |
| 30390 | Ware House Industries | Casper, WY 82605 | Oil & Gas Operator | Dec 2013 |
| 30391 | Ware Jimmy M | Seminole, OK 74868 | Oil & Gas Operator | Nov 1998 |
| 30392 | Warfield John E | Cleo Springs, OK 73729-9723 | Oil & Gas Operator | Jul 2005 |
| 30393 | Warfield Management, LLC | Newman, GA 30263 | Gas Operator | Dec 2021 |
| 30394 | Warhorse Oil & Gas, LLC | | Oil & Gas Operator | Dec 2018 |
| 30395 | Warhorse Petroleum Inc | Lafayette, CO 80026 | Oil Operator | Jan 2024 |
| 30396 | Warner Clifford E | Newark, OH 43055 | Oil Operator | Dec 2022 |
| 30397 | Warner George H | Pomeroy, OH 45769 | Oil & Gas Operator | Dec 2014 |
| 30398 | Warner Gona Revocable Trust | Sand Springs, OK 74063-5296 | Oil & Gas Operator | May 2009 |
| 30399 | Warner Oil Co., Inc. | Canyon, TX 79015 | Oil & Gas Operator | May 2013 |
| 30400 | Warner Oil Prod | | Oil Operator | Apr 1995 |