| 31301 | Whittington Energy Co. | Melbourne, FL 32901 | Oil & Gas Operator | Apr 2026 |
| 31302 | Whittington Operating Company | Houston, TX 77069 | Oil & Gas Operator | Apr 2026 |
| 31303 | Whittington, G. R. | Amarillo, TX 79109 | Oil & Gas Operator | Jan 1994 |
| 31304 | Whittington, G. R. Estate | Amarillo, TX 79109 | Oil & Gas Operator | Mar 2008 |
| 31305 | Whitton Company, Inc. | | Oil & Gas Operator | Jul 2020 |
| 31306 | WHK, Inc. | | Oil & Gas Operator | Oct 1993 |
| 31307 | WHL Oil Corp. | Houston, TX 77227 | Oil & Gas Operator | Sep 1998 |
| 31308 | Whomble O O | Morris, OK 74445 | Oil Operator | Jun 2021 |
| 31309 | WHR Corporation | | Oil & Gas Operator | Jul 2014 |
| 31310 | Wible Limited Liability Co | Edmond, OK 73012 | Oil Operator | Oct 2024 |
| 31311 | Wichita Falls Oil Expl. Co. | Holliday, TX 76366 | Oil & Gas Operator | Apr 2026 |
| 31312 | Wichita Industri | | Oil Operator | Nov 1987 |
| 31313 | Wichita Operating Company, Inc. | Spring, TX 77393 | Oil & Gas Operator | May 2009 |
| 31314 | Wichita River Oil Corporation | Englewood, CO 80111 | Oil & Gas Operator | Apr 2009 |
| 31315 | Wick'S Petroleum | | Oil Operator | Aug 1983 |
| 31316 | Wicker Oil Co | | Oil & Gas Operator | Feb 1992 |
| 31317 | Wicker, La. Cent. & Clovelly | | Gas Operator | Jul 1983 |
| 31318 | Wickham, R. R. | | Oil Operator | Jan 1980 |
| 31319 | Wicklund Enterprises Inc | | Oil Operator | Dec 2024 |
| 31320 | Wicklund Petroleum Corporation | Naples, FL 34108-0108 | Oil & Gas Operator | Dec 2019 |
| 31321 | Widener, A.C. Farms, Inc. | Hudson, KS 67545 | Oil Operator | Dec 2009 |
| 31322 | Widrig Donald N | | Oil Operator | May 1988 |
| 31323 | Widrig Oil LLC | Leawood, KS 66209 | Oil Operator | Dec 2025 |
| 31324 | Widrig, Don | Leawood, KS 66209 | Oil Operator | Jul 2008 |
| 31325 | Wieck Oil Company LLC | Cromwell, OK 74859 | Oil Operator | Aug 2014 |
| 31326 | Wiedemann K T TR | | Oil Operator | Jul 1992 |
| 31327 | Wiepking-Fullerton Energy LLC | | Oil & Gas Operator | Dec 2025 |
| 31328 | Wieser Oil LLC | | Oil & Gas Operator | Dec 2024 |
| 31329 | Wiesner, Roman L. | Ellis, KS 67637 | Oil Operator | Dec 1993 |
| 31330 | Wiesner, Tom Oil Operations | Hays, KS 67601 | Gas Operator | Dec 2025 |
| 31331 | Wigington, James Robert | Ackerly, TX 79713 | Oil & Gas Operator | Aug 2003 |
| 31332 | Wikel, David W | | Oil Operator | Nov 2025 |
| 31333 | Wil-Max Co. | Kingman, KS 67068 | Oil Operator | Jul 2001 |
| 31334 | Wil-MC Oil Corporation The | Irving, TX 75015-2510 | Oil & Gas Operator | Mar 1999 |
| 31335 | Wil-Ron Inc | Lucien, OK 73757-9710 | Oil & Gas Operator | Dec 2025 |
| 31336 | Wilbanks Energy Corporation | Houston, TX 77036 | Oil & Gas Operator | Dec 2001 |
| 31337 | Wilbanks Exploration Inc | Denver, CO 80202 | Oil & Gas Operator | May 2002 |
| 31338 | Wilbanks Reserve Corporation | Denver, CO 80203 | Oil & Gas Operator | Apr 2026 |
| 31339 | Wilbanks, Bruce & G.L. | Midland, TX 79702 | Oil & Gas Operator | Aug 1996 |
| 31340 | Wilbanks, Bruce A. | Midland, TX 79701 | Oil & Gas Operator | Aug 1996 |
| 31341 | Wilbanks, Bruce A. Company | Midland, TX 79702 | Oil & Gas Operator | Apr 2026 |
| 31342 | Wilbrook Exploration, Inc. | Lingleville, TX 76461 | Oil & Gas Operator | Aug 2003 |
| 31343 | Wilchar, DR. R. B. | Fort Worth, TX 76185 | Oil & Gas Operator | Jan 2007 |
| 31344 | Wilco Oil & Gas Corporation | Oklahoma City, OK 73159-6229 | Oil & Gas Operator | Dec 2023 |
| 31345 | Wilco Oil Gas & Expl. Corp. | | Oil & Gas Operator | Mar 1979 |
| 31346 | Wilco Operating | Monahans, TX 79756 | Oil & Gas Operator | Apr 2026 |
| 31347 | Wilco Properties, Inc. | Dallas, TX 75205 | Oil & Gas Operator | Jan 2004 |
| 31348 | Wilco-Placentia Oil Operator LLC | | Oil & Gas Operator | Dec 2025 |
| 31349 | Wilcobill Corporation | | Oil Operator | Dec 1986 |
| 31350 | Wilcox Energy Company | | Oil & Gas Operator | Jan 2026 |
| 31351 | Wilcox Energy Company LLC | Rule, TX 79547 | Oil & Gas Operator | Apr 2026 |
| 31352 | Wilcox Oil Company | Rule, TX 79547 | Oil & Gas Operator | Aug 2008 |
| 31353 | Wilcox Oil, LLC | Wichita, KS 67235 | Oil Operator | Dec 2019 |
| 31354 | Wilcox Operating Company | | Oil Operator | Dec 1989 |
| 31355 | Wilcox Operating Corporation | Shreveport, LA 71115 | Oil & Gas Operator | Apr 2026 |
| 31356 | Wilcox Petroleum Operating LLC. | Rule, TX 79547 | Oil & Gas Operator | Apr 2026 |
| 31357 | Wilcox Pipe & Supply Co | Oklahoma City, OK 73189 | Oil & Gas Operator | May 2006 |
| 31358 | Wilcox Ventures, LLC | | Oil & Gas Operator | Feb 2026 |
| 31359 | Wilcoxson Brothers | Terral, OK 73569 | Oil Operator | Mar 2008 |
| 31360 | Wild Cat Operating Company | Victoria, TX 77903 | Oil & Gas Operator | Mar 2008 |
| 31361 | Wild Goose Storage LLC | | Gas Operator | Dec 2025 |
| 31362 | Wild Horse Energy | Paducah, TX 79248 | Oil & Gas Operator | Apr 2026 |
| 31363 | Wild Outdoors Oil LLC | Duncan, OK 73533 | Oil & Gas Operator | Jan 2026 |
| 31364 | Wildcat Cement Co. | Shamrock, TX 79079 | Oil & Gas Operator | May 2015 |
| 31365 | Wildcat Energy, Inc. | Sedan, KS 67361 | Oil Operator | Feb 2001 |
| 31366 | Wildcat Energy, LLC | Odessa, TX 79768 | Oil & Gas Operator | Jul 2021 |
| 31367 | Wildcat Equipment Co. Inc. | | Oil Operator | Dec 1987 |
| 31368 | Wildcat Midstream Caddo LLC | | Oil Operator | May 2017 |
| 31369 | Wildcat Oil & Gas LLC | Seneca, KS 66538 | Oil & Gas Operator | Dec 2025 |
| 31370 | Wildcat Oil, LLC | Sebree, KY 42455 | Oil Operator | Dec 2021 |
| 31371 | Wildcat Resc Inc | | Oil & Gas Operator | Nov 1992 |
| 31372 | Wildcat Resources | | Oil & Gas Operator | Jun 2016 |
| 31373 | Wildcat Well Services, LTD. | | Oil Operator | Oct 1989 |
| 31374 | Wildco Resources, Inc. | Tyler, TX 75713 | Oil & Gas Operator | Apr 2026 |
| 31375 | Wilde, Henry & Janet | Union Springs, NY 13160 | Gas Operator | Dec 2024 |
| 31376 | Wildfire Energy Operating LLC | Houston, TX 77224 | Oil & Gas Operator | Apr 2026 |
| 31377 | Wildfire Oil & Gas Inc | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2014 |
| 31378 | Wildfire Partners Inc | Ardmore, OK 73402 | Oil & Gas Operator | Dec 2009 |
| 31379 | Wildhorse Oil | Bogue, KS 67625 | Oil Operator | Oct 1994 |
| 31380 | Wildhorse Oil & Gas Corporation | Ardmore, OK 73402 | Oil & Gas Operator | May 2019 |
| 31381 | Wildhorse Operating Company | Ardmore, OK 73402 | Oil & Gas Operator | Apr 2026 |
| 31382 | Wildhorse Resources Management Co, LLC | | Oil & Gas Operator | Feb 2018 |
| 31383 | Wildhorse Resources MNGT Co, LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | May 2019 |
| 31384 | Wildhorse Resources, LLC | Houston, TX 77279 | Oil & Gas Operator | Feb 2015 |
| 31385 | Wildrose Resources Corp | Englewood, CO 80110-6007 | Oil & Gas Operator | Mar 2004 |
| 31386 | Wildwood Operating LLC | Hennessey, OK 73742 | Oil & Gas Operator | Dec 2025 |
| 31387 | Wiley Lease Co., LTD. | Jourdanton, TX 78026 | Oil Operator | Apr 2026 |
| 31388 | Wilham Investments, Inc. | Pampa, TX 79065 | Oil & Gas Operator | Jan 2020 |
| 31389 | Wilhite Productions | MC Dade, TX 78650 | Oil & Gas Operator | Oct 2012 |
| 31390 | Wilkerson Oil Company | | Oil Operator | Dec 1991 |
| 31391 | Wilkes Energy Inc | Akron, OH 44308 | Oil & Gas Operator | Dec 2022 |
| 31392 | Wilkins L L E & O Company | Shawnee, OK 74801 | Oil & Gas Operator | Aug 2018 |
| 31393 | Wilkinson Drilli | | Oil Operator | Dec 1991 |
| 31394 | Wilkinson George R | St Augustine, FL 32080-5352 | Oil & Gas Operator | Jun 2011 |
| 31395 | Wilkinson Oil & Gas LLC | Duncan, OK 73533-2048 | Oil Operator | Dec 2025 |
| 31396 | Wilkison Richard W | Oklahoma City, OK 73107 | Oil Operator | Mar 2011 |
| 31397 | Will Energy Corporation | Dallas, TX 75201 | Oil & Gas Operator | Dec 2025 |
| 31398 | Will Haristy, Jr. | | Oil & Gas Operator | Nov 2024 |
| 31399 | Will McCasland Ind | Hobbs, NM 88240 | Gas Operator | Feb 2008 |
| 31400 | Will-Drill Operating, L.L.C. | Shreveport, LA 71105 | Oil & Gas Operator | Apr 2026 |