| 136401 | ZUGG | Pawnee County, KS | Oil & Gas Property | Dec 2023 |
| 136402 | ZUIDERVEEN | Missaukee County, MI | Oil & Gas Property | Dec 2023 |
| 136403 | ZULA 1 | Howard County, TX | Oil & Gas Property | Jan 2024 |
| 136404 | ZULA 18 | Roger Mills County, OK | Oil & Gas Property | Mar 2022 |
| 136405 | ZULCH, SALLY | Madison County, TX | Oil & Gas Property | Jan 2024 |
| 136406 | ZULETTE | Reagan County, TX | Oil & Gas Property | Jan 2024 |
| 136407 | ZULU | Mountrail County, ND | Oil & Gas Property | Feb 2024 |
| 136408 | ZUM MALLEN | Canadian County, OK | Oil & Gas Property | Feb 2021 |
| 136409 | ZUM MALLEN 1307 | Canadian County, OK | Oil & Gas Property | Dec 2023 |
| 136410 | ZUMA 3 | Loving County, TX | Oil & Gas Property | Jan 2024 |
| 136411 | ZUMA 57-T1-3X10 | Loving County, TX | Oil & Gas Property | Jan 2024 |
| 136412 | ZUMBACH UNIT | Tuscarawas County, OH | Oil & Gas Property | Dec 2022 |
| 136413 | ZUMBRO | Franklin County, MS | Oil & Gas Property | Jul 2021 |
| 136414 | ZUMMALLEN | Kingfisher County, OK | Oil & Gas Property | Dec 2023 |
| 136415 | ZUMPETTA, LAWRENCE ET AL ZMBG | Wetzel County, WV | Oil & Gas Property | Dec 2021 |
| 136416 | ZUMWALT | Colusa County, CA | Gas Property | Dec 2023 |
| 136417 | ZUMWALT | Colusa County, CA | Gas Property | Jul 2005 |
| 136418 | ZUMWALT | Colusa County, CA | Gas Property | Jun 1988 |
| 136419 | ZUMWALT | Glenn County, CA | Gas Property | Sep 2009 |
| 136420 | ZUNI DELAWARE UNIT | Loving County, TX | Oil & Gas Property | Jul 2021 |
| 136421 | ZUNKER UNIT | Karnes County, TX | Oil & Gas Property | Jan 2024 |
| 136422 | ZUPANEC | Ford County, KS | Oil & Gas Property | Dec 2023 |
| 136423 | ZUPSIC | Allegheny County, PA | Gas Property | Dec 2023 |
| 136424 | ZURBRUGG | Columbiana County, OH | Oil & Gas Property | Dec 2022 |
| 136425 | ZURICH | Seminole County, OK | Oil & Gas Property | Dec 2023 |
| 136426 | ZURICH TOWNSITE | Rooks County, KS | Oil Property | Aug 1999 |
| 136427 | ZUTZ 5693 44-12T | Mountrail County, ND | Oil & Gas Property | Feb 2024 |
| 136428 | ZVOLANEK | Ellsworth County, KS | Oil Property | Nov 2023 |
| 136429 | ZVOLANEK | Ellsworth County, KS | Oil Property | Nov 2023 |
| 136430 | ZWAHLEN | Muskingum County, OH | Oil & Gas Property | Dec 2022 |
| 136431 | ZWEIG | Gray County, TX | Gas Property | Mar 2004 |
| 136432 | ZWERNEMANN | Jim Wells County, TX | Oil & Gas Property | Dec 2023 |
| 136433 | ZWEYGARDT | Cheyenne County, KS | Oil & Gas Property | Dec 2023 |
| 136434 | ZWEYGARDT | Cheyenne County, KS | Gas Property | Dec 2023 |
| 136435 | ZWEYGARDT | Cheyenne County, KS | Gas Property | Dec 2023 |
| 136436 | ZWICK | Rice County, KS | Oil Property | Dec 2023 |
| 136437 | ZWILLICH | Ellsworth County, KS | Oil Property | Dec 2023 |
| 136438 | ZWIRN | Yuma County, CO | Gas Property | Feb 2024 |
| 136439 | ZWIRN | Yuma County, CO | Gas Property | Feb 2024 |
| 136440 | ZYBACH | Wheeler County, TX | Oil & Gas Property | Jan 2024 |
| 136441 | ZYBACH | Wheeler County, TX | Oil & Gas Property | Jan 2024 |
| 136442 | ZYBACH 6 | Wheeler County, TX | Oil & Gas Property | Aug 2023 |
| 136443 | ZYBACH-T | Wheeler County, TX | Oil & Gas Property | Jan 2024 |
| 136444 | ZYSK FEDERAL 1-A | Campbell County, WY | Oil & Gas Property | Feb 2024 |
| 136445 | [14744] CASTLE BLACK 6 1 B2CD FEDERAL CO | Lea County, NM | Oil & Gas Property | Jan 2024 |