| 31301 | Whitehorse Inc | Saint Charles, MO 63303-4204 | Oil & Gas Operator | Sep 2015 |
| 31302 | Whiteman Industries Inc | Oklahoma City, OK 73101 | Oil & Gas Operator | May 2025 |
| 31303 | Whitemound Oil Company | FT Stockton, TX 79735 | Oil & Gas Operator | Jan 2017 |
| 31304 | Whitesands Operating, L.L.C. | Corpus Chrsti, TX 78466 | Oil & Gas Operator | Mar 2025 |
| 31305 | Whitesands Resources, L.L.C. | Corpus Chrsti, TX 78466 | Oil Operator | Jun 2019 |
| 31306 | Whitesell, Michael & Darleen | Wellsville, NY 14895 | Oil & Gas Operator | Dec 2025 |
| 31307 | Whiteside, H. W. | Abilene, TX 79604 | Oil & Gas Operator | Nov 1998 |
| 31308 | Whiteside, Robert | Comanche, TX 76442 | Oil & Gas Operator | May 1998 |
| 31309 | Whitetail Crude | | Oil Operator | Nov 1996 |
| 31310 | Whitetail Crude Inc | Ness City, KS 67560 | Oil & Gas Operator | Apr 2026 |
| 31311 | Whitetail Operators LLC | | Oil Operator | Nov 2021 |
| 31312 | Whitewing & Whitewing Oil LLC | | Oil & Gas Operator | May 2004 |
| 31313 | Whitfield Energy | Midland, TX 79702 | Oil & Gas Operator | Jan 1999 |
| 31314 | Whiting Door Manufacturing Corp. | Akron, NY 14001 | Gas Operator | Dec 2025 |
| 31315 | Whiting Oil And Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Sep 2026 |
| 31316 | Whiting Petroleum Corporation | Denver, CO 80290 | Oil & Gas Operator | Jan 2025 |
| 31317 | Whiting Well Partnership | Akron, NY 14001 | Gas Operator | Dec 2025 |
| 31318 | Whitley Oil & Gas Inc | Owasso, OK 74055 | Oil & Gas Operator | Jun 2009 |
| 31319 | Whitley Production | | Oil Operator | Mar 2026 |
| 31320 | Whitley Robert L | Saint Louis, OK 74866-0004 | Oil & Gas Operator | Sep 2014 |
| 31321 | Whitley, William W | Denver, CO 80209 | Oil & Gas Operator | Dec 1983 |
| 31322 | Whitlock, J.R. Operator | Amarillo, TX 79105 | Gas Operator | Jul 1997 |
| 31323 | Whitlow Energy, Inc. | Spring Hill, KS 66083 | Oil & Gas Operator | Feb 2026 |
| 31324 | Whitman-Dome Energy Corporation | San Diego, CA 92101 | Oil & Gas Operator | Nov 1996 |
| 31325 | Whitmar Exploration Company | Denver, CO 80202 | Oil & Gas Operator | Apr 2026 |
| 31326 | Whitmar Natural Resources Co | Tulsa, OK 74136-9998 | Oil & Gas Operator | Jun 2004 |
| 31327 | Whitmar Operating Company | Tulsa, OK 74103-3515 | Oil & Gas Operator | Apr 2009 |
| 31328 | Whitnam Oil & Gas Corp. | Glenville, WV 26351 | Oil & Gas Operator | Dec 2009 |
| 31329 | Whitney Oil & Gas Co, LLC | | Oil & Gas Operator | Dec 2017 |
| 31330 | Whitney Oil & Gas, LLC | | Oil & Gas Operator | Jan 2025 |
| 31331 | Whitney Oil And Gas Corp | | Oil & Gas Operator | Oct 1988 |
| 31332 | Whitney Thomas C | Danville, OH 43014 | Oil & Gas Operator | Dec 2024 |
| 31333 | Whitney, Ben | Clymer, NY 14724 | Gas Operator | Dec 2025 |
| 31334 | Whitson, James A., Jr. | Houston, TX 77063 | Oil & Gas Operator | Nov 2011 |
| 31335 | Whitt Investments, Inc. | Graham, TX 76450 | Oil Operator | Dec 2019 |
| 31336 | Whitt Oil & Gas, Inc. | Albany, TX 76430 | Oil & Gas Operator | Sep 2026 |
| 31337 | Whitt, W. J. | Albany, TX 76430 | Oil & Gas Operator | Nov 1996 |
| 31338 | Whitten Energy Corp. | Houston, TX 77090 | Oil & Gas Operator | Sep 2026 |
| 31339 | Whittier Operating Inc. | Houston, TX 77002 | Oil & Gas Operator | May 2007 |
| 31340 | Whittington Curtis | Stonewall, OK 74871-0482 | Oil & Gas Operator | Feb 2011 |
| 31341 | Whittington Energy Co. | Melbourne, FL 32901 | Oil & Gas Operator | Sep 2026 |
| 31342 | Whittington Operating Company | Houston, TX 77069 | Oil & Gas Operator | Sep 2026 |
| 31343 | Whittington, G. R. | Amarillo, TX 79109 | Oil & Gas Operator | Jan 1994 |
| 31344 | Whittington, G. R. Estate | Amarillo, TX 79109 | Oil & Gas Operator | Mar 2008 |
| 31345 | Whitton Company, Inc. | | Oil & Gas Operator | Jul 2020 |
| 31346 | WHK, Inc. | | Oil & Gas Operator | Oct 1993 |
| 31347 | WHL Oil Corp. | Houston, TX 77227 | Oil & Gas Operator | Sep 1998 |
| 31348 | Whomble O O | Morris, OK 74445 | Oil Operator | Jun 2021 |
| 31349 | WHR Corporation | | Oil & Gas Operator | Jul 2014 |
| 31350 | Wible Limited Liability Co | Edmond, OK 73012 | Oil Operator | Oct 2024 |
| 31351 | Wichita Falls Oil Expl. Co. | Holliday, TX 76366 | Oil & Gas Operator | Sep 2026 |
| 31352 | Wichita Industri | | Oil Operator | Nov 1987 |
| 31353 | Wichita Operating Company, Inc. | Spring, TX 77393 | Oil & Gas Operator | May 2009 |
| 31354 | Wichita River Oil Corporation | Englewood, CO 80111 | Oil & Gas Operator | Apr 2009 |
| 31355 | Wick'S Petroleum | | Oil Operator | Aug 1983 |
| 31356 | Wicker Oil Co | | Oil & Gas Operator | Feb 1992 |
| 31357 | Wicker, La. Cent. & Clovelly | | Gas Operator | Jul 1983 |
| 31358 | Wickham, R. R. | | Oil Operator | Jan 1980 |
| 31359 | Wicklund Enterprises Inc | | Oil Operator | Dec 2025 |
| 31360 | Wicklund Petroleum Corporation | Naples, FL 34108-0108 | Oil & Gas Operator | Dec 2019 |
| 31361 | Widener, A.C. Farms, Inc. | Hudson, KS 67545 | Oil Operator | Dec 2009 |
| 31362 | Widrig Donald N | | Oil Operator | May 1988 |
| 31363 | Widrig Oil LLC | Leawood, KS 66209 | Oil Operator | Apr 2026 |
| 31364 | Widrig, Don | Leawood, KS 66209 | Oil Operator | Jul 2008 |
| 31365 | Wieck Oil Company LLC | Cromwell, OK 74859 | Oil Operator | Aug 2014 |
| 31366 | Wiedemann K T TR | | Oil Operator | Jul 1992 |
| 31367 | Wiepking-Fullerton Energy LLC | | Oil & Gas Operator | Apr 2026 |
| 31368 | Wieser Oil LLC | | Oil & Gas Operator | Dec 2025 |
| 31369 | Wiesner, Roman L. | Ellis, KS 67637 | Oil Operator | Dec 1993 |
| 31370 | Wiesner, Tom Oil Operations | Hays, KS 67601 | Gas Operator | Apr 2026 |
| 31371 | Wightman, Ted L. | Sinclairville, NY 14782 | Gas Operator | Dec 2025 |
| 31372 | Wigington, James Robert | Ackerly, TX 79713 | Oil & Gas Operator | Aug 2003 |
| 31373 | Wikel, David W | | Oil Operator | Mar 2026 |
| 31374 | Wil-Max Co. | Kingman, KS 67068 | Oil Operator | Jul 2001 |
| 31375 | Wil-MC Oil Corporation The | Irving, TX 75015-2510 | Oil & Gas Operator | Mar 1999 |
| 31376 | Wil-Ron Inc | Lucien, OK 73757-9710 | Oil & Gas Operator | Apr 2026 |
| 31377 | Wilbanks Energy Corporation | Houston, TX 77036 | Oil & Gas Operator | Dec 2001 |
| 31378 | Wilbanks Exploration Inc | Denver, CO 80202 | Oil & Gas Operator | May 2002 |
| 31379 | Wilbanks Reserve Corporation | Denver, CO 80203 | Oil & Gas Operator | Sep 2026 |
| 31380 | Wilbanks, Bruce & G.L. | Midland, TX 79702 | Oil & Gas Operator | Aug 1996 |
| 31381 | Wilbanks, Bruce A. | Midland, TX 79701 | Oil & Gas Operator | Aug 1996 |
| 31382 | Wilbanks, Bruce A. Company | Midland, TX 79702 | Oil & Gas Operator | Sep 2026 |
| 31383 | Wilbrook Exploration, Inc. | Lingleville, TX 76461 | Oil & Gas Operator | Aug 2003 |
| 31384 | Wilchar, DR. R. B. | Fort Worth, TX 76185 | Oil & Gas Operator | Jan 2007 |
| 31385 | Wilco Oil & Gas Corporation | Oklahoma City, OK 73159-6229 | Oil & Gas Operator | Dec 2023 |
| 31386 | Wilco Oil Gas & Expl. Corp. | | Oil & Gas Operator | Mar 1979 |
| 31387 | Wilco Operating | Monahans, TX 79756 | Oil & Gas Operator | Sep 2026 |
| 31388 | Wilco Properties, Inc. | Dallas, TX 75205 | Oil & Gas Operator | Jan 2004 |
| 31389 | Wilco-Placentia Oil Operator LLC | | Oil & Gas Operator | Jul 2026 |
| 31390 | Wilcobill Corporation | | Oil Operator | Dec 1986 |
| 31391 | Wilcox Energy Company | | Oil & Gas Operator | Jun 2026 |
| 31392 | Wilcox Energy Company LLC | Rule, TX 79547 | Oil & Gas Operator | Sep 2026 |
| 31393 | Wilcox Oil Company | Rule, TX 79547 | Oil & Gas Operator | Aug 2008 |
| 31394 | Wilcox Oil, LLC | Wichita, KS 67235 | Oil Operator | Dec 2019 |
| 31395 | Wilcox Operating Company | | Oil Operator | Dec 1989 |
| 31396 | Wilcox Operating Corporation | Shreveport, LA 71115 | Oil & Gas Operator | Sep 2026 |
| 31397 | Wilcox Petroleum Operating LLC. | Rule, TX 79547 | Oil & Gas Operator | Sep 2026 |
| 31398 | Wilcox Pipe & Supply Co | Oklahoma City, OK 73189 | Oil & Gas Operator | May 2006 |
| 31399 | Wilcox Ventures, LLC | | Oil & Gas Operator | Jun 2026 |
| 31400 | Wilcoxson Brothers | Terral, OK 73569 | Oil Operator | Mar 2008 |