| 31701 | Zapata-Fender, L. L. C. | Tyler, TX 75710 | Oil & Gas Operator | Apr 2001 |
| 31702 | Zargon Oil (ND) Inc. | | Oil & Gas Operator | Feb 2024 |
| 31703 | Zarvona Energy LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2024 |
| 31704 | Zavala Independent Gas, Inc. | San Antonio, TX 78217 | Oil & Gas Operator | Oct 2007 |
| 31705 | Zavanna Resources LLC | Denver, CO 80202 | Oil & Gas Operator | Jan 2024 |
| 31706 | Zavanna, LLC | | Oil & Gas Operator | Feb 2024 |
| 31707 | Zaveri Oil & Gas LTD | Albany, KY 42602 | Oil Operator | Dec 2006 |
| 31708 | Zaza Energy, LLC | Houston, TX 77010 | Oil & Gas Operator | Apr 2024 |
| 31709 | Zca Gas Gathering Co., Inc. | Bartlesville, OK 74003 | Oil & Gas Operator | Apr 2020 |
| 31710 | Zeagler Enterprises, Inc. | Shreveport, LA 71115 | Oil & Gas Operator | Mar 2009 |
| 31711 | Zeal Production Company | | Oil & Gas Operator | Feb 2024 |
| 31712 | Zebra Oil And Gas | Lubbock, TX 79423 | Oil & Gas Operator | Aug 2002 |
| 31713 | Zebra Oil Company | El Campo, TX 77437 | Oil & Gas Operator | Apr 2024 |
| 31714 | Zeiders Bros Oil & Gas Co LLC | Edmond, OK 73003 | Oil & Gas Operator | Jan 2024 |
| 31715 | Zeit Exploration Co., Inc. | | Oil & Gas Operator | May 1994 |
| 31716 | Zelaya Oil And Gas, LLC | Premont, TX 78375 | Oil & Gas Operator | Apr 2024 |
| 31717 | Zenergy Inc | Tulsa, OK 74136 | Oil & Gas Operator | Feb 2024 |
| 31718 | Zenergy Operating Co. | | Oil & Gas Operator | Sep 2023 |
| 31719 | Zenergy Operating Company, LLC | Tulsa, OK 74136 | Oil & Gas Operator | Dec 2016 |
| 31720 | Zenith Drilling | | Oil & Gas Operator | Aug 1995 |
| 31721 | Zenith Drilling Corporation | Wichita, KS 67206 | Oil & Gas Operator | Dec 2023 |
| 31722 | Zenith Exploration Co Inc | Washington, PA 15301 | Oil & Gas Operator | Dec 2014 |
| 31723 | Zenith Oil & Gas Inc | MT Gilead, OH 43338 | Oil & Gas Operator | Dec 1999 |
| 31724 | Zenith Oil & Gas, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Jan 2024 |
| 31725 | Zenithal LLC | Isonville, KY 41149 | Oil & Gas Operator | Dec 2022 |
| 31726 | Zent, Norman J. & Karen | | Gas Operator | Dec 2022 |
| 31727 | Zephyr Lone Star Oper Co.,L.L.C. | Oklahoma City, OK 73118 | Oil & Gas Operator | Apr 2024 |
| 31728 | Zephyr Operating Co LLC | Oklahoma City, OK 73118-6035 | Oil & Gas Operator | Jan 2024 |
| 31729 | Zephyr SWD LLC | | Oil Operator | Jan 2024 |
| 31730 | Zerbst James E | | Oil & Gas Operator | Apr 2007 |
| 31731 | Zercon Oil & Gas, Inc. | | Oil Operator | Oct 2003 |
| 31732 | Zero Mass Mining, LLC | | Oil Operator | Jan 2024 |
| 31733 | Zeta Energy LLC | Ashland, OR 97520 | Oil Operator | Dec 2023 |
| 31734 | Zetetic Partners, LTD. | Georgetown, TX 78626 | Oil Operator | Aug 2022 |
| 31735 | Zgen, Inc. | | Oil & Gas Operator | Jul 1990 |
| 31736 | Zia Energy Inc | The Woodlands, TX 77380 | Oil & Gas Operator | May 2005 |
| 31737 | Zia Minerals LTD Co | Andrews, TX 79714 | Oil & Gas Operator | Sep 1996 |
| 31738 | Zickefoose, R. L. And W.F. | Burgettstown, PA 15021-0000 | Oil & Gas Operator | Dec 2021 |
| 31739 | Ziegler-Peru, Inc. | Houston, TX 77027 | Oil & Gas Operator | Dec 2019 |
| 31740 | Zielinski, Jason H. | Fredonia, NY 14063 | Gas Operator | Dec 2022 |
| 31741 | Zielke Contracting LLC | Balko, OK 73931-1187 | Oil Operator | Jun 2020 |
| 31742 | Zilkha Energy Company | Houston, TX 77046 | Oil & Gas Operator | Oct 2002 |
| 31743 | Zilkha Energy Inc | Houston, TX 77002-5223-5223 | Oil & Gas Operator | Dec 2008 |
| 31744 | Zim Energy Corporation | Tulsa, OK 74153 | Oil & Gas Operator | Jan 1998 |
| 31745 | Zimco (Robt A Zimmerman) | Wolf Point, MT 59201 | Oil Operator | Apr 2009 |
| 31746 | Zimet Brothers Inc | | Oil Operator | Mar 2008 |
| 31747 | Zimmerman Oil & Gas Exploration, Inc. | Lovington, NM 88260 | Oil & Gas Operator | Dec 2020 |
| 31748 | Zimmerman, Aaron W. | Penn Yan, NY 14527 | Gas Operator | Dec 2022 |
| 31749 | Zimmerman, IVan L. & Lois N. | Penn Yan, NY 14527 | Gas Operator | Dec 2022 |
| 31750 | Zimmerman, Wayne W. And Pauline R. | Penn Yan, NY 14527 | Gas Operator | Dec 2022 |
| 31751 | Zimtex Energy LLC | | Oil & Gas Operator | Nov 2017 |
| 31752 | Zingara Grimes, LLC | Dallas, TX 75205 | Oil & Gas Operator | Apr 2024 |
| 31753 | Zink Petroleum Corp | Uniontown, OH 44685 | Oil & Gas Operator | Dec 1993 |
| 31754 | Zinke & Trumbo L | | Oil & Gas Operator | Nov 2000 |
| 31755 | Zinke & Trumbo LTD | Tulsa, OK 74105 | Oil & Gas Operator | Sep 2017 |
| 31756 | Zinke & Trumbo, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2007 |
| 31757 | Zinn Petroleum Co. | Houston, TX 77024 | Oil & Gas Operator | Nov 2021 |
| 31758 | Zinszer Oil Co., Inc. | Hays, KS 67601 | Oil Operator | Dec 2019 |
| 31759 | Zinszer Oil Comp | | Oil Operator | Aug 1985 |
| 31760 | Zion Energy Corporation | Peru, KS 67360-0082 | Oil Operator | Aug 2000 |
| 31761 | Zittel, Kenneth D. | Springville, NY 14141 | Gas Operator | Dec 2022 |
| 31762 | Zivney Energy | White Oak, TX 75693 | Oil & Gas Operator | Apr 2024 |
| 31763 | ZK Petroleum Co., L.L.C. | Houston, TX 77057 | Oil Operator | Apr 2024 |
| 31764 | Zlab, Adolph | Yates Center, KS 66783 | Oil Operator | Jul 1997 |
| 31765 | Zlomek, John | Belmont, NY 14813 | Oil & Gas Operator | Dec 2022 |
| 31766 | Zoandra Petroleu | | Oil & Gas Operator | May 1993 |
| 31767 | Zoe Oil & Energy, LP | Fort Worth, TX 76148 | Oil & Gas Operator | Apr 2024 |
| 31768 | Zoller & Danneberg Inc | Denver, CO 80203 | Oil & Gas Operator | May 1975 |
| 31769 | Zollinger Veldon | Cresent, OK 73028 | Oil & Gas Operator | Apr 2009 |
| 31770 | Zollinger Veldon Inc | Crescent, OK 73028-9280 | Oil & Gas Operator | Nov 2018 |
| 31771 | Zonal Holding Corp. | | Oil Operator | Dec 1998 |
| 31772 | Zone Energy, LLC | Houston, TX 77251 | Oil & Gas Operator | Dec 2023 |
| 31773 | Zoran Oil & Gas | Jefferson, OH 44047 | Oil & Gas Operator | Dec 2011 |
| 31774 | Zoran Oil & Gas Co | Jefferson, OH 44047 | Oil & Gas Operator | Dec 2023 |
| 31775 | Zorger, Gerald W. | Wichita, KS 67202 | Oil & Gas Operator | Apr 1985 |
| 31776 | Zorra Oil & Gas | Dilley, TX 78017 | Oil & Gas Operator | Apr 2024 |
| 31777 | ZP Disposal Systems LLC | Kingfisher, OK 73750-7084 | Oil Operator | Feb 2024 |
| 31778 | ZSX, Inc. | Corsicana, TX 75110 | Oil & Gas Operator | Jul 1997 |
| 31779 | ZTC Petro Investments LP | Houston, TX 77056 | Oil & Gas Operator | May 2020 |
| 31780 | ZTH Operating, LLC | Arp, TX 75750 | Oil & Gas Operator | Apr 2024 |
| 31781 | Zu, LLC | Hays, KS 67601 | Oil Operator | Dec 2023 |
| 31782 | Zuhone William H | Mattoon, IL 61938-4019 | Oil & Gas Operator | Jan 2015 |
| 31783 | Zukowski, Eve | Springville, NY 14141 | Gas Operator | Dec 2022 |
| 31784 | Zumyers Inc | Newalla, OK 74857-0259 | Oil Operator | Apr 2003 |
| 31785 | Zynergy LLC | | Oil Operator | Nov 2023 |
| 31786 | ZZ Energy LLC | Norman, OK 73070-4531 | Gas Operator | Feb 2024 |
| 31787 | Zzron Inc. | Midland, TX 79704 | Oil & Gas Operator | Aug 2003 |