| 901 | WILLIAMS | Otsego County, MI | Gas Property | Oct 2025 |
| 902 | WILLIAMS, WALTER | Midland County, MI | Oil Property | Oct 2025 |
| 903 | WILLICK | Otsego County, MI | Gas Property | Aug 2021 |
| 904 | WILSON 1-2 | Montcalm County, MI | Oil Property | Aug 2025 |
| 905 | WILSON 1-27 | Jackson County, MI | Oil & Gas Property | Oct 2025 |
| 906 | WILSON, G | Osceola County, MI | Oil Property | May 2023 |
| 907 | WINEMAN | Gladwin County, MI | Oil & Gas Property | Oct 2025 |
| 908 | WING | Missaukee County, MI | Oil Property | Sep 2025 |
| 909 | WINTERFIELD | Osceola County, MI | Oil & Gas Property | Sep 2025 |
| 910 | WIRTH, A | Kent County, MI | Oil Property | Mar 2022 |
| 911 | WISE | Grand Traverse County, MI | Oil & Gas Property | Oct 2025 |
| 912 | WOBIG | Ogemaw County, MI | Oil Property | Aug 2025 |
| 913 | WOBIG-MORRAINE | Ogemaw County, MI | Oil Property | Aug 2025 |
| 914 | WOJTOWICZ | Arenac County, MI | Oil Property | Aug 2025 |
| 915 | WOLF | Otsego County, MI | Gas Property | Jul 2019 |
| 916 | WOLF, CARL | Otsego County, MI | Oil & Gas Property | Oct 2009 |
| 917 | WOLOHAN EST | Saginaw County, MI | Oil Property | Dec 2024 |
| 918 | WOOD | Crawford County, MI | Oil & Gas Property | Oct 2025 |
| 919 | WRIGHT | Allegan County, MI | Oil Property | Sep 2025 |
| 920 | WUORI | Manistee County, MI | Oil & Gas Property | Dec 2023 |
| 921 | WUSSOW | Manistee County, MI | Oil Property | Aug 2025 |
| 922 | WYANT, A C | Midland County, MI | Oil Property | Oct 2025 |
| 923 | WYLIE | Livingston County, MI | Oil Property | Oct 2025 |
| 924 | YAGER | Gladwin County, MI | Oil Property | Oct 2025 |
| 925 | YANKEE | Manistee County, MI | Oil & Gas Property | May 1986 |
| 926 | YAWKEY, T | Arenac County, MI | Oil Property | Oct 2024 |
| 927 | YENIOR, O | Arenac County, MI | Oil Property | Jun 2024 |
| 928 | YOUKER | Grand Traverse County, MI | Oil & Gas Property | Aug 2025 |
| 929 | YOUNGS, T | Bay County, MI | Oil Property | Aug 2025 |
| 930 | ZECKZER | Otsego County, MI | Gas Property | Jul 2019 |
| 931 | ZELLMAN | Allegan County, MI | Oil & Gas Property | Sep 2025 |
| 932 | ZIEHM | Manistee County, MI | Oil & Gas Property | May 1985 |
| 933 | ZIELINSKI | Manistee County, MI | Oil & Gas Property | Jun 2023 |
| 934 | ZIMMERMAN | Bay County, MI | Oil Property | Oct 2025 |
| 935 | ZIMMERMAN | Manistee County, MI | Oil & Gas Property | Oct 2025 |
| 936 | ZINK | Mecosta County, MI | Oil & Gas Property | Oct 2025 |
| 937 | ZMIJEWSKI & ZIETLOW ET AL 1-26 | Jackson County, MI | Oil & Gas Property | Oct 2025 |
| 938 | ZOKOE | Ottawa County, MI | Oil & Gas Property | Sep 2025 |
| 939 | ZONDLAK | Midland County, MI | Oil Property | Dec 2008 |
| 940 | ZUIDERVEEN | Missaukee County, MI | Oil & Gas Property | Sep 2025 |