| 144001 | ZUEHLKE UNIT | Fayette County, TX | Oil & Gas Property | Sep 2025 |
| 144002 | ZUERCHER | Edwards County, KS | Oil & Gas Property | Jun 2025 |
| 144003 | ZUERCHER | Edwards County, KS | Oil & Gas Property | Jun 2025 |
| 144004 | ZUGG | Pawnee County, KS | Oil & Gas Property | Apr 2025 |
| 144005 | ZUIDERVEEN | Missaukee County, MI | Oil & Gas Property | Sep 2025 |
| 144006 | ZULA 1 | Howard County, TX | Oil & Gas Property | Aug 2025 |
| 144007 | ZULA 18 | Roger Mills County, OK | Oil & Gas Property | Sep 2025 |
| 144008 | ZULCH, SALLY | Madison County, TX | Oil & Gas Property | Aug 2025 |
| 144009 | ZULETTE | Reagan County, TX | Oil & Gas Property | Sep 2025 |
| 144010 | ZULU | Mountrail County, ND | Oil & Gas Property | Oct 2025 |
| 144011 | ZUM 28-13-7 | Canadian County, OK | Oil & Gas Property | Sep 2025 |
| 144012 | ZUM MALLEN | Canadian County, OK | Oil & Gas Property | Feb 2021 |
| 144013 | ZUM MALLEN 1307 | Canadian County, OK | Oil & Gas Property | Oct 2025 |
| 144014 | ZUMA 3 | Loving County, TX | Oil & Gas Property | Sep 2025 |
| 144015 | ZUMA 57-T1-3X10 | Loving County, TX | Oil & Gas Property | Sep 2025 |
| 144016 | ZUMBACH UNIT | Tuscarawas County, OH | Oil & Gas Property | Dec 2024 |
| 144017 | ZUMBRO | Franklin County, MS | Oil & Gas Property | Jul 2021 |
| 144018 | ZUMMALLEN | Kingfisher County, OK | Oil & Gas Property | Sep 2025 |
| 144019 | ZUMPETTA, LAWRENCE ET AL ZMBG | Wetzel County, WV | Oil & Gas Property | Dec 2021 |
| 144020 | ZUMWALT | Colusa County, CA | Gas Property | Oct 2025 |
| 144021 | ZUMWALT | Stephens County, OK | Oil & Gas Property | Sep 2025 |
| 144022 | ZUMWALT | Colusa County, CA | Gas Property | Jul 2005 |
| 144023 | ZUMWALT | Colusa County, CA | Gas Property | Jun 1988 |
| 144024 | ZUMWALT | Glenn County, CA | Gas Property | Sep 2009 |
| 144025 | ZUMWALT | Glenn County, CA | Gas Property | Sep 1988 |
| 144026 | ZUNKER UNIT | Karnes County, TX | Oil & Gas Property | Sep 2025 |
| 144027 | ZUPSIC | Allegheny County, PA | Gas Property | Dec 2024 |
| 144028 | ZURBRUGG | Columbiana County, OH | Oil & Gas Property | Dec 2024 |
| 144029 | ZURICH TOWNSITE | Rooks County, KS | Oil Property | Aug 1999 |
| 144030 | ZVOLANEK | Ellsworth County, KS | Oil Property | Jun 2025 |
| 144031 | ZVOLANEK | Ellsworth County, KS | Oil Property | Jun 2025 |
| 144032 | ZWAHLEN | Muskingum County, OH | Oil & Gas Property | Dec 2022 |
| 144033 | ZWEIFEL HENRY 1H | Hood County, TX | Oil & Gas Property | Aug 2025 |
| 144034 | ZWEIG | Gray County, TX | Gas Property | Apr 2004 |
| 144035 | ZWENKE 34-11H | Dunn County, ND | Oil & Gas Property | Oct 2025 |
| 144036 | ZWERNEMANN | Jim Wells County, TX | Oil & Gas Property | Mar 2025 |
| 144037 | ZWEYGARDT | Cheyenne County, KS | Oil & Gas Property | Jun 2025 |
| 144038 | ZWEYGARDT | Cheyenne County, KS | Gas Property | Jun 2025 |
| 144039 | ZWEYGARDT | Cheyenne County, KS | Gas Property | Jun 2025 |
| 144040 | ZWICK | Rice County, KS | Oil Property | May 2025 |
| 144041 | ZWILLICH | Ellsworth County, KS | Oil Property | Jun 2025 |
| 144042 | ZWIRN | Yuma County, CO | Gas Property | Sep 2025 |
| 144043 | ZWIRN | Yuma County, CO | Gas Property | Sep 2025 |
| 144044 | ZYBACH | Wheeler County, TX | Oil & Gas Property | Sep 2025 |
| 144045 | ZYBACH | Wheeler County, TX | Oil & Gas Property | Sep 2025 |
| 144046 | ZYBACH 6 | Wheeler County, TX | Oil & Gas Property | Feb 2025 |
| 144047 | ZYBACH-T | Wheeler County, TX | Oil & Gas Property | Sep 2025 |
| 144048 | ZYSK FEDERAL 1-A | Campbell County, WY | Oil & Gas Property | Oct 2025 |
| 144049 | [14744] CASTLE BLACK 6 1 B2CD FEDERAL CO | Lea County, NM | Oil & Gas Property | Sep 2025 |
| 144050 | `IDEWATER OIL CO. FEE | Liberty County, TX | Oil & Gas Property | Jul 2025 |