| 2001 | HARKINS MINERAL | Floyd County, KY | Oil & Gas Property | Dec 2020 |
| 2002 | HARKINS MINERAL ASSOC | Floyd County, KY | Gas Property | Dec 2020 |
| 2003 | HARKINS MINERAL ASSOC | Floyd County, KY | Oil & Gas Property | Dec 2020 |
| 2004 | HARKIS | Weld County, CO | Oil & Gas Property | Jul 2019 |
| 2005 | HARKIS | Big Horn County, MT | Gas Property | Nov 2020 |
| 2006 | HARKNESS | Muskingum County, OH | Oil Property | Dec 2022 |
| 2007 | HARKNESS | Wilson County, KS | Gas Property | Jan 2024 |
| 2008 | HARKNESS | Renville County, ND | Oil & Gas Property | Mar 2024 |
| 2009 | HARKNESS | Scott County, KS | Oil Property | Dec 2023 |
| 2010 | HARKNESS | Ness County, KS | Oil Property | Jan 2024 |
| 2011 | HARKNESS | Bradford County, PA | Gas Property | Mar 2024 |
| 2012 | HARKNESS | Ness County, KS | Oil Property | Oct 2023 |
| 2013 | HARKNESS 1 | Scott County, KS | Oil Property | Jul 2019 |
| 2014 | HARKRADER | Seward County, KS | Oil & Gas Property | Jan 2024 |
| 2015 | HARKRADER | Stanton County, KS | Gas Property | Jan 2024 |
| 2016 | HARKREADER | Garvin County, OK | Oil & Gas Property | Mar 2024 |
| 2017 | HARKRIDER | Caddo Parish, LA | Oil & Gas Property | Dec 2023 |
| 2018 | HARKRIDER UNIT | Lee County, TX | Oil & Gas Property | Feb 2024 |
| 2019 | HARLAN | Perry County, OH | Oil & Gas Property | Dec 2019 |
| 2020 | HARLAN | Petroleum County, MT | Oil Property | Mar 2024 |
| 2021 | HARLAN | Nueces County, TX | Oil & Gas Property | Jul 2023 |
| 2022 | HARLAN | Bradford County, PA | Gas Property | Feb 2024 |
| 2023 | HARLAN | White County, AR | Gas Property | Mar 2009 |
| 2024 | HARLAN | Greenwood County, KS | Oil Property | Dec 2016 |
| 2025 | HARLAN | Hutchinson County, TX | Oil & Gas Property | Feb 2024 |
| 2026 | HARLAN | Frio County, TX | Oil & Gas Property | Jan 2024 |
| 2027 | HARLAN | Jack County, TX | Oil & Gas Property | Dec 2018 |
| 2028 | HARLAN | Wheeler County, TX | Oil & Gas Property | Feb 2024 |
| 2029 | HARLAN | Clinton County, KY | Oil Property | Aug 2021 |
| 2030 | HARLAN | Cherokee County, TX | Oil & Gas Property | Feb 2024 |
| 2031 | HARLAN | Young County, TX | Oil & Gas Property | Feb 2024 |
| 2032 | HARLAN 09-10 | Cleburne County, AR | Gas Property | Mar 2024 |
| 2033 | HARLAN 1 | Los Angeles County, CA | Oil & Gas Property | Mar 2024 |
| 2034 | HARLAN KENNETH | Nueces County, TX | Oil & Gas Property | Dec 2019 |
| 2035 | HARLAN METTING 01 0 | Dewitt County, TX | Oil & Gas Property | Feb 2024 |
| 2036 | HARLAN REBSOM | Dunn County, ND | Oil & Gas Property | Mar 2024 |
| 2037 | HARLAN, SCOTT | Marshall County, WV | Oil & Gas Property | Dec 2021 |
| 2038 | HARLAN-NELSON | Live Oak County, TX | Oil & Gas Property | Feb 2024 |
| 2039 | HARLAND | Sherman County, TX | Oil & Gas Property | Dec 2023 |
| 2040 | HARLAND | Sherman County, TX | Oil & Gas Property | Feb 2024 |
| 2041 | HARLAND 3 | Howard County, TX | Oil & Gas Property | Feb 2024 |
| 2042 | HARLAND C | Sherman County, TX | Gas Property | Feb 2024 |
| 2043 | HARLAND J & ELIZABETH R LYTLE | Armstrong County, PA | Gas Property | Dec 2023 |
| 2044 | HARLAND REED SPENCE | Indiana County, PA | Gas Property | Dec 2023 |
| 2045 | HARLE | La Salle County, TX | Oil & Gas Property | Feb 2024 |
| 2046 | HARLEQUIN | Weld County, CO | Oil & Gas Property | Mar 2024 |
| 2047 | HARLESS | Comanche County, OK | Oil Property | Jan 2024 |
| 2048 | HARLESS | Kanawha County, WV | Oil & Gas Property | Oct 2021 |
| 2049 | HARLESS | Morrill County, NE | Oil Property | Nov 2023 |
| 2050 | HARLESS 2-19H | Beckham County, OK | Oil & Gas Property | Feb 2024 |
| 2051 | HARLESS, J | Roane County, WV | Oil & Gas Property | Dec 2021 |
| 2052 | HARLETON NE (PETTIT) UNIT | Harrison County, TX | Oil & Gas Property | Jan 2024 |
| 2053 | HARLETT | Knox County, OH | Oil & Gas Property | Dec 2022 |
| 2054 | HARLEY | Cheyenne County, CO | Oil Property | Feb 2024 |
| 2055 | HARLEY | Reno County, KS | Oil & Gas Property | Jan 2024 |
| 2056 | HARLEY | Gregg County, TX | Oil & Gas Property | Feb 2024 |
| 2057 | HARLEY | Grady County, OK | Oil & Gas Property | Feb 2024 |
| 2058 | HARLEY | Throckmorton County, TX | Oil & Gas Property | Feb 2024 |
| 2059 | HARLEY | Stephens County, OK | Oil Property | Mar 2024 |
| 2060 | HARLEY | Stephens County, OK | Oil & Gas Property | Feb 2024 |
| 2061 | HARLEY | Carter County, OK | Oil Property | Mar 2024 |
| 2062 | HARLEY | Hughes County, OK | Gas Property | Feb 2024 |
| 2063 | HARLEY | McKenzie County, ND | Oil & Gas Property | Mar 2024 |
| 2064 | HARLEY 2014 | Major County, OK | Oil & Gas Property | Mar 2024 |
| 2065 | HARLEY EZELL | Muskogee County, OK | Gas Property | Apr 2007 |
| 2066 | HARLEY FED 3671-35-26 | Converse County, WY | Oil & Gas Property | Mar 2024 |
| 2067 | HARLEY FEDERAL | McKenzie County, ND | Oil & Gas Property | Mar 2024 |
| 2068 | HARLEY O ROSTOFER | Licking County, OH | Oil Property | Dec 2023 |
| 2069 | HARLIN | Young County, TX | Oil & Gas Property | Feb 2024 |
| 2070 | HARLIN | Pontotoc County, OK | Oil Property | Sep 2023 |
| 2071 | HARLON BLACKMON 25H | De Soto Parish, LA | Gas Property | Dec 2023 |
| 2072 | HARLOW | Pittsburg County, OK | Gas Property | Feb 2024 |
| 2073 | HARLOW CUNNINGHAM | Coal County, OK | Gas Property | Feb 2024 |
| 2074 | HARLOW PAUL | Eastland County, TX | Oil & Gas Property | Feb 2024 |
| 2075 | HARLOW S. J. GAS UNIT | Limestone County, TX | Oil & Gas Property | Feb 2024 |
| 2076 | HARMAN | Kingfisher County, OK | Oil & Gas Property | Feb 2024 |
| 2077 | HARMAN 1 | Canadian County, OK | Oil & Gas Property | Feb 2024 |
| 2078 | HARMAN G. L | Washington County, OH | Oil & Gas Property | Dec 2023 |
| 2079 | HARMAN GAS UNIT | Finney County, KS | Gas Property | Jan 2024 |
| 2080 | HARMAN, A. M | McDowell County, WV | Gas Property | Dec 2021 |
| 2081 | HARMAN, J | McDowell County, WV | Gas Property | Dec 2021 |
| 2082 | HARMAN, JAMES | McDowell County, WV | Gas Property | Dec 2021 |
| 2083 | HARMARVILLE | Allegheny County, PA | Gas Property | Dec 2018 |
| 2084 | HARMEL | Archer County, TX | Oil & Gas Property | Feb 2024 |
| 2085 | HARMEL | Archer County, TX | Oil & Gas Property | Feb 2020 |
| 2086 | HARMEL | Baylor County, TX | Oil & Gas Property | Feb 2024 |
| 2087 | HARMEL | Baylor County, TX | Oil Property | Feb 2024 |
| 2088 | HARMEL | Archer County, TX | Oil & Gas Property | Feb 2024 |
| 2089 | HARMEL-ANDREWS | Archer County, TX | Oil & Gas Property | Feb 2024 |
| 2090 | HARMEYER | Stephens County, OK | Gas Property | Feb 2024 |
| 2091 | HARMON | Armstrong County, PA | Gas Property | Dec 2023 |
| 2092 | HARMON | Martin County, KY | Gas Property | Dec 2022 |
| 2093 | HARMON | Smith County, TX | Oil & Gas Property | Feb 2024 |
| 2094 | HARMON | Stevens County, KS | Oil & Gas Property | Jan 2024 |
| 2095 | HARMON | Coshocton County, OH | Oil & Gas Property | Dec 2023 |
| 2096 | HARMON | Roosevelt County, MT | Oil & Gas Property | Mar 2024 |
| 2097 | HARMON | McIntosh County, OK | Gas Property | Aug 2007 |
| 2098 | HARMON | Greenwood County, KS | Oil Property | Jan 2024 |
| 2099 | HARMON | McPherson County, KS | Oil Property | Aug 2023 |
| 2100 | HARMON | Montague County, TX | Oil & Gas Property | Feb 2024 |