| 6501 | Windsor Energy Group LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Aug 2021 |
| 6502 | Windsor Energy Inc | Dallas, TX 75204-3199 | Oil & Gas Operator | May 2006 |
| 6503 | Windward Development LLC | Tulsa, OK 74136-7007 | Oil & Gas Operator | Jul 2019 |
| 6504 | Wineinger Dickie L Dba Royal Petroleum Co | Iowa Park, TX 76367 | Oil Operator | Nov 2022 |
| 6505 | Winney Construction Company | Forks, WA 98331-0801 | Oil & Gas Operator | Jan 2013 |
| 6506 | Winston Oil Co | Marietta, OH 45750-754-754 | Oil & Gas Operator | Mar 2025 |
| 6507 | Winzeler Oil Company | Oklahoma City, OK 73112 | Oil & Gas Operator | May 2013 |
| 6508 | Wise James W | Okmulgee, OK 74447 | Oil & Gas Operator | Oct 1996 |
| 6509 | Wise Oil & Gas Company LLC | Shawnee, OK 74801-8507 | Oil & Gas Operator | Feb 2024 |
| 6510 | Wiser Oil Co | Denver, CO 80202 | Oil & Gas Operator | Dec 2023 |
| 6511 | Wishbone Oil & Gas | Noble, OK 73068 | Oil & Gas Operator | Mar 2007 |
| 6512 | Witherspoon Joe A | Bells, TX 75414 | Oil Operator | Aug 2024 |
| 6513 | Withrow Oil Company Inc | Yukon, OK 73099-7712 | Oil & Gas Operator | Apr 2021 |
| 6514 | Witty Thomas E | Enid, OK 73703 | Oil & Gas Operator | Mar 2008 |
| 6515 | WJM Oil Inc | Shawnee, OK 74804-3203 | Oil & Gas Operator | Jan 2013 |
| 6516 | WLW Oil & Gas LLC | Kingfisher, OK 73750 | Oil & Gas Operator | Apr 2025 |
| 6517 | WM Energy LLC | Asher, OK 74826 | Oil & Gas Operator | Mar 2025 |
| 6518 | WM KS Energy Resources LLC | Shreveport, LA 71101 | Oil & Gas Operator | Nov 2019 |
| 6519 | WN Operating Inc | Okmulgee, OK 74447 | Oil & Gas Operator | Mar 2025 |
| 6520 | Wohlford Properties Inc | Barling, AR 72923 | Gas Operator | Apr 2022 |
| 6521 | Wolf Creek Enterprises Inc | Stillwater, OK 74074-6965 | Oil Operator | Apr 2009 |
| 6522 | Wolf Howard Lee | Burneyville, OK 73430-9617 | Oil & Gas Operator | Jun 2000 |
| 6523 | Wolverine Exploration Company | Houston, TX 77002 | Oil & Gas Operator | May 2019 |
| 6524 | Wolverine Petroleum Corp | Holdenville, OK 74848 | Oil & Gas Operator | Jul 1999 |
| 6525 | Wonee Oil Company | Healdton, OK 73438 | Oil Operator | Jul 1996 |
| 6526 | Wood Fay C Estate | Enid, OK 73703 | Oil & Gas Operator | Jun 2013 |
| 6527 | Wood Oil Company | Tulsa, OK 74103 | Gas Operator | Oct 1997 |
| 6528 | Woodland Operating LLC | Rio VIsta, TX 76093-0010 | Oil & Gas Operator | Feb 2025 |
| 6529 | Woods Henry Dba Woods Oil Company | Madill, OK 73446 | Oil Operator | Aug 2023 |
| 6530 | Woods Oil Co. | Burkburnett, TX 76354 | Oil & Gas Operator | Jun 2025 |
| 6531 | Woods Petroleum Corporation | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2015 |
| 6532 | Woodward Disposal Company Inc | Woodward, OK 73801-3234 | Oil & Gas Operator | Sep 2013 |
| 6533 | Woodward Iodine Corporation | Woodward, OK 73801 | Oil & Gas Operator | Apr 2025 |
| 6534 | Woody Oil LLC | South Coffeyville, OK 74072-9536 | Oil Operator | Mar 2025 |
| 6535 | Woolever Stephen L | Tulsa, OK 74108-2303 | Oil Operator | Jul 2024 |
| 6536 | Woolsey Petroleum Corporation | Wichita, KS 67202 | Oil & Gas Operator | Feb 2025 |
| 6537 | Work John | Tulsa, OK 74135 | Oil Operator | Dec 1996 |
| 6538 | World Oil | | Oil & Gas Operator | Nov 1998 |
| 6539 | Worldwide Energy Corp. | Freer, TX 78357 | Oil & Gas Operator | Jan 1997 |
| 6540 | Worstell Michael H | Collinsville, OK 74021-5918 | Oil Operator | Mar 2015 |
| 6541 | Worstell Oil & Gas Company | Collinsville, OK 74021 | Oil Operator | Nov 2005 |
| 6542 | Worstell Oil Co LLC | Collinsville, OK 74021-5918 | Oil Operator | Sep 2024 |
| 6543 | Worthy George Disposal Inc | Cushing, OK 74023-9523 | Oil Operator | Jan 2001 |
| 6544 | WP Oil LLC | Owasso, OK 74055 | Oil Operator | Mar 2025 |
| 6545 | WPX Energy Mid-Continent Co | Oklahoma City, OK 73102-5010 | Oil & Gas Operator | Apr 2016 |
| 6546 | WR Oil & Gas LLC | Plano, TX 75024-3523 | Oil & Gas Operator | Apr 2025 |
| 6547 | Wrather Jr J D | Beverly Hills, CA 90210-4724 | Oil & Gas Operator | Mar 1993 |
| 6548 | Wright Jerry L | Crescent, OK 73028-0474 | Oil & Gas Operator | Jun 2013 |
| 6549 | Wright Katherine E | Tulsa, OK 74114-1229 | Oil Operator | Sep 2019 |
| 6550 | Wright Operating, Inc. | Denison, TX 75020 | Oil & Gas Operator | Jun 2025 |
| 6551 | Wright Richard | Ratliff City, OK 73481-0155 | Oil & Gas Operator | Mar 2015 |
| 6552 | Wright V Gerald | Cushing, OK 74023 | Oil & Gas Operator | Nov 2003 |
| 6553 | Wroten Wiley Jr | Dallas, TX 75252 | Oil & Gas Operator | Jun 1994 |
| 6554 | WW Park 51 LLC | Claremore, OK 74017 | Oil Operator | Mar 2025 |
| 6555 | Wyant & O'Keefe | Santa Fe, NM 87501 | Oil & Gas Operator | May 2006 |
| 6556 | Wyatt Rick | Pawhuska, OK 74056 | Oil & Gas Operator | Feb 2006 |
| 6557 | Wyatt'S Oil Corporation | | Oil & Gas Operator | Mar 2025 |
| 6558 | Wylie Henry C | Ratliff City, OK 73481-0102 | Oil Operator | May 2020 |
| 6559 | Wynn-Crosby Operating LP | Dallas, TX 75201 | Oil & Gas Operator | Mar 2025 |
| 6560 | Wytex Production Corporation | Fort Smith, AR 72903 | Oil & Gas Operator | Jan 2020 |
| 6561 | X-Bar LMT Partnership | | Oil & Gas Operator | May 2013 |
| 6562 | X-Bar Resources Inc | Holdenville, OK 74848 | Oil & Gas Operator | Jul 2013 |
| 6563 | Xae Corporation | Norman, OK 73072 | Oil & Gas Operator | Apr 2021 |
| 6564 | Xanadu Exploration Company | Broken Arrow, OK 74014 | Oil & Gas Operator | Apr 2025 |
| 6565 | Xeric Oil & Gas Corporation | Midland, TX 79702 | Oil & Gas Operator | Apr 2014 |
| 6566 | Xog Operating LLC | Midland, TX 79702 | Oil & Gas Operator | Jun 2025 |
| 6567 | XTO Energy Inc. | Spring, TX 77389 | Oil & Gas Operator | Jun 2025 |
| 6568 | Xutapa Properties LLC | | Oil & Gas Operator | Mar 2025 |
| 6569 | Y D F Inc | Oklahoma City, OK 73128 | Oil & Gas Operator | May 2025 |
| 6570 | Yager Company | Hutchinson, KS 67502 | Oil & Gas Operator | Dec 2000 |
| 6571 | Yale Oil Association, Inc. | Oklahoma City, OK 73105 | Oil & Gas Operator | Apr 2025 |
| 6572 | Yarberry Oil Company | Wichita Falls, TX 76308-5120 | Oil & Gas Operator | Apr 2015 |
| 6573 | Yarbrough R E | Lago VIsta, TX 78645-0005 | Oil & Gas Operator | Mar 2015 |
| 6574 | Yarhola Production Company | Drumright, OK 74030 | Oil & Gas Operator | Mar 2025 |
| 6575 | Yates, Earl R | | Oil Operator | Mar 2015 |
| 6576 | Yegen E C | Casper, WY 82604 | Oil & Gas Operator | Mar 2015 |
| 6577 | Yerby Bill | Ada, OK 74820-5404 | Oil Operator | Jan 2012 |
| 6578 | Yeubanks Barbara | Cromwell, OK 74837 | Oil Operator | Apr 2025 |
| 6579 | Yingling Oil, Inc. | Oklahoma City, OK 73118 | Oil & Gas Operator | Dec 2000 |
| 6580 | Yocham Harlan E. | Sapulpa, OK 74066 | Oil Operator | Aug 2013 |
| 6581 | Young H Inc | Edmond, OK 73013 | Oil & Gas Operator | Oct 1993 |
| 6582 | Young Marshall R Oil Co | Fort Worth, TX 76107 | Oil & Gas Operator | Mar 2011 |
| 6583 | Young Resources, Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | Aug 1999 |
| 6584 | Young Tommy Oil Inc | Woodward, OK 73802-0893 | Oil & Gas Operator | Mar 2025 |
| 6585 | Young Z Joe | Cement, OK 73017-0600 | Oil & Gas Operator | Mar 2015 |
| 6586 | Young Zoral J | Cement, OK 73017 | Oil & Gas Operator | Sep 2000 |
| 6587 | Young, John H., Inc. | Houston, TX 77027 | Oil & Gas Operator | Jun 2025 |
| 6588 | Youngblood J Lee | Dallas, TX 75221 | Oil & Gas Operator | Feb 1996 |
| 6589 | Younger Enterprises Inc | Ada, OK 74821-1882 | Oil Operator | Jan 2003 |
| 6590 | Z G Operating LLC | Oklahoma City, OK 73134-5038 | Oil & Gas Operator | Nov 2009 |
| 6591 | Z G Exploration Inc | Oklahoma City, OK 73112 | Oil & Gas Operator | Feb 2005 |
| 6592 | Zafar Oil & Gas, Inc. | Oklahoma City, OK 73132 | Oil Operator | Aug 2013 |
| 6593 | Zap Oil Company | Nowata, OK 74048-2640 | Oil & Gas Operator | Nov 2005 |
| 6594 | Zarvona Energy LLC | Houston, TX 77002 | Oil & Gas Operator | Jun 2025 |
| 6595 | Zca Gas Gathering Co., Inc. | Bartlesville, OK 74003 | Oil & Gas Operator | Apr 2020 |
| 6596 | Zeal Production Company | Sperry, OK 74073-4714 | Oil & Gas Operator | Apr 2025 |
| 6597 | Zeiders Bros Oil & Gas Co LLC | Edmond, OK 73003 | Oil & Gas Operator | Mar 2025 |
| 6598 | Zenergy Inc | Tulsa, OK 74136 | Oil & Gas Operator | Apr 2025 |
| 6599 | Zenith Oil & Gas, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Mar 2025 |
| 6600 | Zephyr Operating Co LLC | Oklahoma City, OK 73118-6035 | Oil & Gas Operator | Apr 2025 |