| 2001 | HARDZOG | Comanche County, OK | Oil & Gas Property | Sep 1994 |
| 2002 | HARE | Garfield County, OK | Oil & Gas Property | Apr 2026 |
| 2003 | HARE | Wilson County, KS | Oil & Gas Property | Apr 2026 |
| 2004 | HARE | Sumner County, KS | Oil Property | May 2025 |
| 2005 | HARE | Wilson County, KS | Gas Property | Apr 2026 |
| 2006 | HARE | San Juan County, NM | Oil & Gas Property | May 2026 |
| 2007 | HARE | Chenango County, NY | Gas Property | Dec 2025 |
| 2008 | HARE GAS COM | San Juan County, NM | Oil & Gas Property | May 2026 |
| 2009 | HARE GAS COM C | San Juan County, NM | Oil & Gas Property | May 2026 |
| 2010 | HARELL | Martin County, TX | Oil & Gas Property | Mar 2026 |
| 2011 | HAREN | Monroe County, OH | Oil & Gas Property | Dec 2025 |
| 2012 | HARER | Tioga County, PA | Gas Property | May 2026 |
| 2013 | HARES EAR | Hughes County, OK | Oil & Gas Property | Apr 2026 |
| 2014 | HARGENS | Cheyenne County, NE | Gas Property | Dec 2025 |
| 2015 | HARGER | Trego County, KS | Oil Property | Apr 2026 |
| 2016 | HARGESS | Lee County, KY | Oil Property | Dec 2023 |
| 2017 | HARGILL GAS UNIT | Willacy County, TX | Oil & Gas Property | Apr 2026 |
| 2018 | HARGIS | Woodward County, OK | Oil & Gas Property | May 2026 |
| 2019 | HARGIS | Zavala County, TX | Oil & Gas Property | May 2026 |
| 2020 | HARGIS | Garvin County, OK | Oil & Gas Property | Oct 2025 |
| 2021 | HARGRAVE | Archer County, TX | Oil & Gas Property | Feb 2025 |
| 2022 | HARGRAVE | San Juan County, NM | Gas Property | May 2026 |
| 2023 | HARGRAVE | Irion County, TX | Oil & Gas Property | Jan 2026 |
| 2024 | HARGROVE | Zavala County, TX | Oil & Gas Property | May 2026 |
| 2025 | HARGROVE | Texas County, OK | Oil & Gas Property | Apr 2026 |
| 2026 | HARGROVE | Ochiltree County, TX | Oil & Gas Property | May 2026 |
| 2027 | HARGROVE | Shackelford County, TX | Oil & Gas Property | Mar 2026 |
| 2028 | HARGROVE | Titus County, TX | Oil & Gas Property | May 2026 |
| 2029 | HARGROVE 49 | Scurry County, TX | Oil & Gas Property | May 2026 |
| 2030 | HARGROVE H.B | Hidalgo County, TX | Oil & Gas Property | May 2026 |
| 2031 | HARGROVE JAMES W | Burleson County, TX | Oil & Gas Property | Nov 2024 |
| 2032 | HARGROVES | McCulloch County, TX | Oil & Gas Property | Apr 2026 |
| 2033 | HARHAUSEN | Lipscomb County, TX | Oil & Gas Property | May 2026 |
| 2034 | HARJO | Seminole County, OK | Oil Property | Apr 2024 |
| 2035 | HARJO | Seminole County, OK | Oil & Gas Property | Dec 2023 |
| 2036 | HARJO | Seminole County, OK | Oil & Gas Property | Feb 2026 |
| 2037 | HARJO | Creek County, OK | Oil Property | Apr 2026 |
| 2038 | HARJO | Pontotoc County, OK | Oil & Gas Property | Mar 2018 |
| 2039 | HARJO | Seminole County, OK | Oil & Gas Property | Apr 2026 |
| 2040 | HARJO-RALSTON | Tulsa County, OK | Oil Property | Apr 2026 |
| 2041 | HARJU | Manistee County, MI | Oil & Gas Property | May 2026 |
| 2042 | HARJU | Manistee County, MI | Oil & Gas Property | May 2026 |
| 2043 | HARKER | Cheyenne County, CO | Oil & Gas Property | Jan 2008 |
| 2044 | HARKER RANCH MORROW UNIT(HRMU | Cheyenne County, CO | Oil & Gas Property | May 2026 |
| 2045 | HARKER, ROSALEA ARTHUR HARKER | Barbour County, WV | Oil & Gas Property | Dec 2021 |
| 2046 | HARKEY 35 STATE | Eddy County, NM | Oil & Gas Property | Jun 2025 |
| 2047 | HARKINS | Cheyenne County, KS | Gas Property | Apr 2026 |
| 2048 | HARKINS | Live Oak County, TX | Oil & Gas Property | Apr 2015 |
| 2049 | HARKINS | Cheyenne County, KS | Gas Property | Apr 2026 |
| 2050 | HARKINS MINERAL | Floyd County, KY | Oil & Gas Property | Dec 2024 |
| 2051 | HARKINS MINERAL | Floyd County, KY | Oil & Gas Property | Dec 2024 |
| 2052 | HARKINS MINERAL ASSOC | Floyd County, KY | Gas Property | Dec 2024 |
| 2053 | HARKINS MINERAL ASSOC | Floyd County, KY | Oil & Gas Property | Dec 2024 |
| 2054 | HARKIS | Weld County, CO | Oil & Gas Property | Jul 2019 |
| 2055 | HARKIS | Big Horn County, MT | Gas Property | Nov 2020 |
| 2056 | HARKNESS | Scott County, KS | Oil Property | Jul 2019 |
| 2057 | HARKNESS | Muskingum County, OH | Oil Property | Dec 2025 |
| 2058 | HARKNESS | Wilson County, KS | Gas Property | Apr 2026 |
| 2059 | HARKNESS | Renville County, ND | Oil & Gas Property | May 2026 |
| 2060 | HARKNESS | Scott County, KS | Oil Property | Mar 2025 |
| 2061 | HARKNESS | Ness County, KS | Oil Property | Apr 2026 |
| 2062 | HARKNESS | Bradford County, PA | Gas Property | May 2026 |
| 2063 | HARKNESS | Ness County, KS | Oil Property | Feb 2026 |
| 2064 | HARKRADER | Seward County, KS | Oil & Gas Property | Mar 2026 |
| 2065 | HARKRADER | Stanton County, KS | Gas Property | Apr 2026 |
| 2066 | HARKREADER | Garvin County, OK | Oil & Gas Property | May 2026 |
| 2067 | HARKRIDER | Caddo Parish, LA | Oil & Gas Property | Dec 2024 |
| 2068 | HARKRIDER UNIT | Lee County, TX | Oil & Gas Property | May 2026 |
| 2069 | HARLAN | Perry County, OH | Oil & Gas Property | Dec 2019 |
| 2070 | HARLAN | Petroleum County, MT | Oil Property | May 2026 |
| 2071 | HARLAN | Nueces County, TX | Oil & Gas Property | Jul 2023 |
| 2072 | HARLAN | Bradford County, PA | Gas Property | May 2026 |
| 2073 | HARLAN | White County, AR | Gas Property | Mar 2009 |
| 2074 | HARLAN | Greenwood County, KS | Oil Property | Dec 2016 |
| 2075 | HARLAN | Frio County, TX | Oil & Gas Property | May 2026 |
| 2076 | HARLAN | Jack County, TX | Oil & Gas Property | Sep 2022 |
| 2077 | HARLAN | Wheeler County, TX | Oil & Gas Property | Apr 2026 |
| 2078 | HARLAN | Clinton County, KY | Oil Property | Jul 2023 |
| 2079 | HARLAN | Cherokee County, TX | Oil & Gas Property | May 2026 |
| 2080 | HARLAN | Young County, TX | Oil & Gas Property | May 2026 |
| 2081 | HARLAN 09-10 | Cleburne County, AR | Gas Property | Jul 2024 |
| 2082 | HARLAN 1 | Los Angeles County, CA | Oil & Gas Property | Jun 2026 |
| 2083 | HARLAN KENNETH | Nueces County, TX | Oil & Gas Property | Dec 2019 |
| 2084 | HARLAN METTING 01 0 | Dewitt County, TX | Oil & Gas Property | May 2026 |
| 2085 | HARLAN REBSOM | Dunn County, ND | Oil & Gas Property | May 2026 |
| 2086 | HARLAN, SCOTT | Marshall County, WV | Oil & Gas Property | Dec 2021 |
| 2087 | HARLAN-NELSON | Live Oak County, TX | Oil & Gas Property | May 2026 |
| 2088 | HARLAND | Sherman County, TX | Oil & Gas Property | Apr 2026 |
| 2089 | HARLAND | Sherman County, TX | Oil & Gas Property | Feb 2026 |
| 2090 | HARLAND 1-31 | Texas County, OK | Gas Property | Apr 2026 |
| 2091 | HARLAND 3 | Howard County, TX | Oil & Gas Property | May 2026 |
| 2092 | HARLAND C | Sherman County, TX | Gas Property | May 2026 |
| 2093 | HARLAND J & ELIZABETH R LYTLE | Armstrong County, PA | Gas Property | Dec 2025 |
| 2094 | HARLAND REED SPENCE | Indiana County, PA | Gas Property | Dec 2025 |
| 2095 | HARLE | La Salle County, TX | Oil & Gas Property | May 2026 |
| 2096 | HARLEQUIN | Weld County, CO | Oil & Gas Property | May 2026 |
| 2097 | HARLESS | Comanche County, OK | Oil Property | Mar 2026 |
| 2098 | HARLESS | Kanawha County, WV | Oil & Gas Property | Oct 2021 |
| 2099 | HARLESS, J | Roane County, WV | Oil & Gas Property | Dec 2021 |
| 2100 | HARLETON NE (PETTIT) UNIT | Harrison County, TX | Oil & Gas Property | May 2026 |