| 6601 | Wolverine Exploration Company | Houston, TX 77002 | Oil & Gas Operator | May 2019 |
| 6602 | Wolverine Petroleum Corp | Holdenville, OK 74848 | Oil & Gas Operator | Jul 1999 |
| 6603 | Wonee Oil Company | Healdton, OK 73438 | Oil Operator | Jul 1996 |
| 6604 | Wood Fay C Estate | Enid, OK 73703 | Oil & Gas Operator | Jun 2013 |
| 6605 | Wood Oil Company | Tulsa, OK 74103 | Gas Operator | Oct 1997 |
| 6606 | Woodland Operating LLC | Rio VIsta, TX 76093-0010 | Oil & Gas Operator | Aug 2025 |
| 6607 | Woods Henry Dba Woods Oil Company | Madill, OK 73446 | Oil Operator | Aug 2023 |
| 6608 | Woods Oil Co. | Burkburnett, TX 76354 | Oil & Gas Operator | Dec 2025 |
| 6609 | Woods Petroleum Corporation | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2015 |
| 6610 | Woodward Disposal Company Inc | Woodward, OK 73801-3234 | Oil & Gas Operator | Sep 2013 |
| 6611 | Woodward Iodine Corporation | Woodward, OK 73801 | Oil & Gas Operator | Sep 2025 |
| 6612 | Woolever Stephen L | Tulsa, OK 74108-2303 | Oil Operator | Jul 2024 |
| 6613 | Woolsey Petroleum Corporation | Wichita, KS 67202 | Oil & Gas Operator | Jun 2025 |
| 6614 | Work John | Tulsa, OK 74135 | Oil Operator | Dec 1996 |
| 6615 | World Oil | | Oil & Gas Operator | Nov 1998 |
| 6616 | Worldwide Energy Corporation | Freer, TX 78357 | Oil & Gas Operator | Jan 1997 |
| 6617 | Worstell Michael H | Collinsville, OK 74021-5918 | Oil Operator | Mar 2015 |
| 6618 | Worstell Oil & Gas Company | Collinsville, OK 74021 | Oil Operator | Nov 2005 |
| 6619 | Worstell Oil Co LLC | Collinsville, OK 74021-5918 | Oil Operator | Aug 2025 |
| 6620 | Worthy George Disposal Inc | Cushing, OK 74023-9523 | Oil Operator | Jan 2001 |
| 6621 | WP Oil LLC | Owasso, OK 74055 | Oil Operator | Aug 2025 |
| 6622 | WPX Energy Mid-Continent Co | Oklahoma City, OK 73102-5010 | Oil & Gas Operator | Apr 2016 |
| 6623 | WR Oil & Gas LLC | Plano, TX 75024-3523 | Oil & Gas Operator | Aug 2025 |
| 6624 | Wrather Jr J D | Beverly Hills, CA 90210-4724 | Oil & Gas Operator | Mar 1993 |
| 6625 | Wright Jerry L | Crescent, OK 73028-0474 | Oil & Gas Operator | Jun 2013 |
| 6626 | Wright Katherine E | Tulsa, OK 74114-1229 | Oil Operator | Sep 2019 |
| 6627 | Wright Operating, Inc. | Denison, TX 75020 | Oil & Gas Operator | Dec 2025 |
| 6628 | Wright Richard | Ratliff City, OK 73481-0155 | Oil & Gas Operator | Mar 2015 |
| 6629 | Wright V Gerald | Cushing, OK 74023 | Oil & Gas Operator | Nov 2003 |
| 6630 | Wroten Wiley Jr | Dallas, TX 75252 | Oil & Gas Operator | Jun 1994 |
| 6631 | WW Park 51 LLC | Claremore, OK 74017 | Oil Operator | Aug 2025 |
| 6632 | Wyant & O'Keefe | Santa Fe, NM 87501 | Oil & Gas Operator | May 2006 |
| 6633 | Wyatt Rick | Pawhuska, OK 74056 | Oil & Gas Operator | Feb 2006 |
| 6634 | Wyatt'S Oil Corporation | | Oil & Gas Operator | Aug 2025 |
| 6635 | Wylie Henry C | Ratliff City, OK 73481-0102 | Oil Operator | May 2020 |
| 6636 | Wynn-Crosby Operating LP | Dallas, TX 75201 | Oil & Gas Operator | Aug 2025 |
| 6637 | Wytex Production Corporation | Fort Smith, AR 72903 | Oil & Gas Operator | Aug 2025 |
| 6638 | X-Bar LMT Partnership | | Oil & Gas Operator | May 2013 |
| 6639 | X-Bar Resources Inc | Holdenville, OK 74848 | Oil & Gas Operator | Jul 2013 |
| 6640 | Xae Corporation | Norman, OK 73072 | Oil & Gas Operator | Apr 2021 |
| 6641 | Xanadu Exploration Company | Broken Arrow, OK 74014 | Oil & Gas Operator | Sep 2025 |
| 6642 | Xeric Oil & Gas Corporation | Midland, TX 79702 | Oil & Gas Operator | Apr 2014 |
| 6643 | Xog Operating LLC | Midland, TX 79702 | Oil & Gas Operator | Dec 2025 |
| 6644 | XTO Energy Inc. | Spring, TX 77389 | Oil & Gas Operator | Dec 2025 |
| 6645 | Xutapa Properties LLC | | Oil & Gas Operator | Aug 2025 |
| 6646 | Y D F Inc | Oklahoma City, OK 73128 | Oil & Gas Operator | Sep 2025 |
| 6647 | Yager Company | Hutchinson, KS 67502 | Oil & Gas Operator | Dec 2000 |
| 6648 | Yale Oil Association, Inc. | Oklahoma City, OK 73105 | Oil & Gas Operator | Sep 2025 |
| 6649 | Yarberry Oil Company | Wichita Falls, TX 76308-5120 | Oil & Gas Operator | Apr 2015 |
| 6650 | Yarbrough R E | Lago VIsta, TX 78645-0005 | Oil & Gas Operator | Mar 2015 |
| 6651 | Yarhola Production Company | Drumright, OK 74030 | Oil & Gas Operator | Sep 2025 |
| 6652 | Yates, Earl R | | Oil Operator | Mar 2015 |
| 6653 | Yegen E C | Casper, WY 82604 | Oil & Gas Operator | Mar 2015 |
| 6654 | Yerby Bill | Ada, OK 74820-5404 | Oil Operator | Jan 2012 |
| 6655 | Yeubanks Barbara | Cromwell, OK 74837 | Oil Operator | Sep 2025 |
| 6656 | Yingling Oil, Inc. | Oklahoma City, OK 73118 | Oil & Gas Operator | Dec 2000 |
| 6657 | Yocham Harlan E. | Sapulpa, OK 74066 | Oil Operator | Aug 2013 |
| 6658 | Young H Inc | Edmond, OK 73013 | Oil & Gas Operator | Oct 1993 |
| 6659 | Young Marshall R Oil Co | Fort Worth, TX 76107 | Oil & Gas Operator | Mar 2011 |
| 6660 | Young Resources, Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | Aug 1999 |
| 6661 | Young Stanton L | Oklahoma City, OK 73118 | Oil & Gas Operator | Nov 2014 |
| 6662 | Young Tommy Oil Inc | Woodward, OK 73802-0893 | Oil & Gas Operator | Aug 2025 |
| 6663 | Young Z Joe | Cement, OK 73017-0600 | Oil & Gas Operator | Mar 2015 |
| 6664 | Young Zoral J | Cement, OK 73017 | Oil & Gas Operator | Sep 2000 |
| 6665 | Young, John H., Inc. | Houston, TX 77027 | Oil & Gas Operator | Dec 2025 |
| 6666 | Youngblood J Lee | Dallas, TX 75221 | Oil & Gas Operator | Feb 1996 |
| 6667 | Younger Enterprises Inc | Ada, OK 74821-1882 | Oil Operator | Jan 2003 |
| 6668 | Z G Operating LLC | Oklahoma City, OK 73134-5038 | Oil & Gas Operator | Nov 2009 |
| 6669 | Z G Exploration Inc | Oklahoma City, OK 73112 | Oil & Gas Operator | Feb 2005 |
| 6670 | Zafar Oil & Gas, Inc. | Oklahoma City, OK 73132 | Oil Operator | Aug 2013 |
| 6671 | Zap Oil Company | Nowata, OK 74048-2640 | Oil & Gas Operator | Nov 2005 |
| 6672 | Zarvona Energy LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2025 |
| 6673 | Zca Gas Gathering Co., Inc. | Bartlesville, OK 74003 | Oil & Gas Operator | Apr 2020 |
| 6674 | Zeal Production Company | Sperry, OK 74073-4714 | Oil & Gas Operator | Sep 2025 |
| 6675 | Zeiders Bros. Oil & Gas Company, L.L.C. | Edmond, OK 73003 | Oil & Gas Operator | Aug 2025 |
| 6676 | Zenergy Inc | Tulsa, OK 74136 | Oil & Gas Operator | Sep 2025 |
| 6677 | Zenith Oil & Gas, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Aug 2025 |
| 6678 | Zephyr Operating Co LLC | Oklahoma City, OK 73118-6035 | Oil & Gas Operator | Sep 2025 |
| 6679 | Zephyr SWD LLC | Oklahoma City, OK 73118-6035 | Oil Operator | Sep 2025 |
| 6680 | Zilkha Energy Company | Houston, TX 77046 | Oil & Gas Operator | Oct 2002 |
| 6681 | Zim Energy Corporation | Tulsa, OK 74153 | Oil & Gas Operator | Jan 1998 |
| 6682 | Zimtex Energy LLC | Perryton, TX 79070-5818 | Oil & Gas Operator | Nov 2017 |
| 6683 | Zinke & Trumbo LTD | Tulsa, OK 74105 | Oil & Gas Operator | Sep 2017 |
| 6684 | Zion Energy Corporation | Peru, KS 67360 | Oil Operator | Aug 2000 |
| 6685 | Zollinger Veldon | Cresent, OK 73028 | Oil & Gas Operator | Apr 2009 |
| 6686 | Zollinger Veldon Inc | Crescent, OK 73028-9280 | Oil & Gas Operator | Nov 2018 |
| 6687 | ZP Disposal Systems LLC | Kingfisher, OK 73750 | Oil Operator | Sep 2025 |
| 6688 | Zuhone William H | Mattoon, IL 61938-4019 | Oil & Gas Operator | Jan 2015 |
| 6689 | Zumyers Inc | Newalla, OK 74857-0259 | Oil Operator | Apr 2003 |
| 6690 | ZZ Energy LLC | Norman, OK 73070 | Gas Operator | Sep 2025 |
| 6691 | Zzron Inc. | Midland, TX 79704 | Oil & Gas Operator | Aug 2003 |