| 139501 | ZUMBRO | Franklin County, MS | Oil & Gas Property | Jul 2021 |
| 139502 | ZUMMALLEN | Kingfisher County, OK | Oil & Gas Property | Sep 2024 |
| 139503 | ZUMMALLEN | Crawford County, KS | Oil Property | Jul 2024 |
| 139504 | ZUMPETTA, LAWRENCE ET AL ZMBG | Wetzel County, WV | Oil & Gas Property | Dec 2021 |
| 139505 | ZUMWALT | Colusa County, CA | Gas Property | Oct 2024 |
| 139506 | ZUMWALT | Colusa County, CA | Gas Property | Jul 2005 |
| 139507 | ZUMWALT | Colusa County, CA | Gas Property | Jun 1988 |
| 139508 | ZUMWALT | Glenn County, CA | Gas Property | Sep 2009 |
| 139509 | ZUMWALT | Glenn County, CA | Gas Property | Sep 1988 |
| 139510 | ZUPANEC | Ford County, KS | Oil & Gas Property | Mar 2024 |
| 139511 | ZUPSIC | Allegheny County, PA | Gas Property | Dec 2023 |
| 139512 | ZURBRUGG | Columbiana County, OH | Oil & Gas Property | Dec 2023 |
| 139513 | ZURICH TOWNSITE | Rooks County, KS | Oil Property | Aug 1999 |
| 139514 | ZUTZ 5693 44-12T | Mountrail County, ND | Oil & Gas Property | Oct 2024 |
| 139515 | ZVOLANEK | Ellsworth County, KS | Oil Property | Jul 2024 |
| 139516 | ZVOLANEK | Ellsworth County, KS | Oil Property | Aug 2024 |
| 139517 | ZWAHLEN | Muskingum County, OH | Oil & Gas Property | Dec 2022 |
| 139518 | ZWEIG | Gray County, TX | Gas Property | Apr 2004 |
| 139519 | ZWERNEMANN | Jim Wells County, TX | Oil & Gas Property | Aug 2024 |
| 139520 | ZWEYGARDT | Cheyenne County, KS | Oil & Gas Property | Aug 2024 |
| 139521 | ZWEYGARDT | Cheyenne County, KS | Gas Property | Aug 2024 |
| 139522 | ZWEYGARDT | Cheyenne County, KS | Gas Property | Aug 2024 |
| 139523 | ZWICK | Rice County, KS | Oil Property | Aug 2024 |
| 139524 | ZWILLICH | Ellsworth County, KS | Oil Property | Aug 2024 |
| 139525 | ZWIRN | Yuma County, CO | Gas Property | Oct 2024 |
| 139526 | ZWIRN | Yuma County, CO | Gas Property | Oct 2024 |
| 139527 | ZYBACH | Wheeler County, TX | Oil & Gas Property | Sep 2024 |
| 139528 | ZYBACH | Wheeler County, TX | Oil & Gas Property | Sep 2024 |
| 139529 | ZYBACH 6 | Wheeler County, TX | Oil & Gas Property | Aug 2024 |
| 139530 | ZYBACH-T | Wheeler County, TX | Oil & Gas Property | Sep 2024 |
| 139531 | ZYSK FEDERAL 1-A | Campbell County, WY | Oil & Gas Property | Nov 2024 |
| 139532 | [14744] CASTLE BLACK 6 1 B2CD FEDERAL CO | Lea County, NM | Oil & Gas Property | Oct 2024 |