| 6101 | RINGGOLD | Armstrong County, PA | Oil & Gas Property | Dec 2023 |
| 6102 | RINGGOLD CORP | Jefferson County, PA | Gas Property | Dec 2023 |
| 6103 | RINGGOLD MINES INC. UNIT NO. 1 | Armstrong County, PA | Gas Property | Dec 2023 |
| 6104 | RINGGOLD SPORTSMEN ASSOC | Jefferson County, PA | Gas Property | Dec 2023 |
| 6105 | RINKHOFF AGRIC ENTER | Greene County, PA | Gas Property | Dec 2012 |
| 6106 | RINKHOFF AGRICULTURAL ENTERPRISES LLC | Greene County, PA | Gas Property | Dec 2016 |
| 6107 | RIPPLE | Armstrong County, PA | Gas Property | Dec 2023 |
| 6108 | RITCHEY | Venango County, PA | Oil Property | Dec 1997 |
| 6109 | RITTENHOUSE | Fayette County, PA | Gas Property | Dec 2023 |
| 6110 | RITTER UNIT | Fayette County, PA | Gas Property | Feb 2024 |
| 6111 | RITZ 03 073 0 | Bradford County, PA | Gas Property | Mar 2024 |
| 6112 | RIVER | Greene County, PA | Gas Property | Feb 2024 |
| 6113 | RIVER RIDGE | Venango County, PA | Oil Property | Dec 2023 |
| 6114 | RIVER RIDGE DEVELOPMENT INC | Venango County, PA | Oil Property | Dec 2023 |
| 6115 | RM & WB DUNN LEASE | McKean County, PA | Oil & Gas Property | Dec 2023 |
| 6116 | ROARING RUN UNIT | Lycoming County, PA | Gas Property | Feb 2024 |
| 6117 | ROBBINS | Clearfield County, PA | Gas Property | Dec 2023 |
| 6118 | ROBBINS BRA | Bradford County, PA | Gas Property | Feb 2024 |
| 6119 | ROBERT | Indiana County, PA | Gas Property | Dec 2015 |
| 6120 | ROBERT | Indiana County, PA | Gas Property | Dec 2023 |
| 6121 | ROBERT | Indiana County, PA | Gas Property | Dec 2023 |
| 6122 | ROBERT | Erie County, PA | Gas Property | Dec 2023 |
| 6123 | ROBERT | Armstrong County, PA | Gas Property | Dec 2023 |
| 6124 | ROBERT | Jefferson County, PA | Oil & Gas Property | Dec 2023 |
| 6125 | ROBERT | Warren County, PA | Gas Property | Dec 2023 |
| 6126 | ROBERT | Erie County, PA | Oil & Gas Property | Dec 2023 |
| 6127 | ROBERT | Armstrong County, PA | Gas Property | Dec 2023 |
| 6128 | ROBERT | Indiana County, PA | Gas Property | Dec 2023 |
| 6129 | ROBERT | Armstrong County, PA | Oil & Gas Property | Dec 2023 |
| 6130 | ROBERT | Armstrong County, PA | Gas Property | Dec 2023 |
| 6131 | ROBERT | Jefferson County, PA | Gas Property | Dec 2023 |
| 6132 | ROBERT | Westmoreland County, PA | Oil & Gas Property | Dec 2023 |
| 6133 | ROBERT | Jefferson County, PA | Gas Property | Dec 2023 |
| 6134 | ROBERT | Crawford County, PA | Oil & Gas Property | Dec 2023 |
| 6135 | ROBERT & PAULETTE | Indiana County, PA | Gas Property | Dec 2023 |
| 6136 | ROBERT A HOY | Clarion County, PA | Gas Property | Dec 2023 |
| 6137 | ROBERT ALLISON L | Clarion County, PA | Gas Property | Dec 2023 |
| 6138 | ROBERT BOLDIN | Indiana County, PA | Gas Property | Dec 2023 |
| 6139 | ROBERT BOWERSOX | Clarion County, PA | Gas Property | Dec 2023 |
| 6140 | ROBERT BOYD SPENCE | Indiana County, PA | Oil & Gas Property | Dec 2023 |
| 6141 | ROBERT BURN | Clarion County, PA | Gas Property | Mar 2024 |
| 6142 | ROBERT BURNS | Clarion County, PA | Gas Property | Dec 2023 |
| 6143 | ROBERT BUSH | Mercer County, PA | Oil & Gas Property | Dec 2021 |
| 6144 | ROBERT BUTERBAUGH | Indiana County, PA | Gas Property | Dec 2023 |
| 6145 | ROBERT C ALLISON | Clarion County, PA | Gas Property | Dec 2023 |
| 6146 | ROBERT C LEVIN ET UX | Westmoreland County, PA | Oil & Gas Property | Dec 2023 |
| 6147 | ROBERT C ULMER A | Lycoming County, PA | Gas Property | Feb 2024 |
| 6148 | ROBERT C. CRISSMAN | Armstrong County, PA | Gas Property | Dec 2023 |
| 6149 | ROBERT C. HILLEN ETUX | Fayette County, PA | Gas Property | Dec 2023 |
| 6150 | ROBERT COLEMAN | Clarion County, PA | Oil & Gas Property | Dec 2023 |
| 6151 | ROBERT D | Indiana County, PA | Gas Property | Dec 2023 |
| 6152 | ROBERT D | Crawford County, PA | Gas Property | Dec 2023 |
| 6153 | ROBERT E PATRICK | Armstrong County, PA | Gas Property | Dec 2023 |
| 6154 | ROBERT E WISSINGER | Indiana County, PA | Oil & Gas Property | Dec 2023 |
| 6155 | ROBERT GRAHAM | Westmoreland County, PA | Gas Property | Dec 2023 |
| 6156 | ROBERT H NEHRIG | Indiana County, PA | Gas Property | Dec 2023 |
| 6157 | ROBERT HAMI | Jefferson County, PA | Gas Property | Dec 2023 |
| 6158 | ROBERT HITCHCOCK | Crawford County, PA | Gas Property | Dec 1990 |
| 6159 | ROBERT HOUSER | Armstrong County, PA | Gas Property | Dec 2022 |
| 6160 | ROBERT J CITERONI | Indiana County, PA | Gas Property | Dec 2023 |
| 6161 | ROBERT J FABIN | Indiana County, PA | Gas Property | Dec 2023 |
| 6162 | ROBERT J. DILTS FMLY ROY R | Indiana County, PA | Gas Property | Dec 2023 |
| 6163 | ROBERT KESTER | Clearfield County, PA | Gas Property | Dec 2023 |
| 6164 | ROBERT L. CALHOUN | Armstrong County, PA | Gas Property | Dec 2022 |
| 6165 | ROBERT M | Indiana County, PA | Gas Property | Dec 2021 |
| 6166 | ROBERT M LENHART | Westmoreland County, PA | Gas Property | Dec 2023 |
| 6167 | ROBERT MITCHELL 8 | Indiana County, PA | Gas Property | Dec 2023 |
| 6168 | ROBERT MURPHY | Westmoreland County, PA | Gas Property | Dec 2023 |
| 6169 | ROBERT N BROTHERS | Clearfield County, PA | Gas Property | Dec 2023 |
| 6170 | ROBERT OSGOOD | McKean County, PA | Gas Property | Dec 2023 |
| 6171 | ROBERT SAWYER | Clarion County, PA | Gas Property | Dec 2023 |
| 6172 | ROBERT SHORTS | Washington County, PA | Oil & Gas Property | Mar 2024 |
| 6173 | ROBERT SMITH | Washington County, PA | Gas Property | Feb 2024 |
| 6174 | ROBERT SPENCER | Clearfield County, PA | Oil & Gas Property | Dec 2023 |
| 6175 | ROBERT SPENCER | Erie County, PA | Gas Property | Dec 2018 |
| 6176 | ROBERT STRONG | Indiana County, PA | Gas Property | Dec 2023 |
| 6177 | ROBERT V MAINE | Jefferson County, PA | Gas Property | Dec 2023 |
| 6178 | ROBERT W. GRAY FM AT | Westmoreland County, PA | Oil & Gas Property | Dec 2023 |
| 6179 | ROBERTA B JONES | Indiana County, PA | Oil & Gas Property | Dec 2023 |
| 6180 | ROBERTS | Greene County, PA | Gas Property | Dec 2015 |
| 6181 | ROBERTS 59 | Greene County, PA | Gas Property | Nov 2022 |
| 6182 | ROBERTSON | Armstrong County, PA | Gas Property | Dec 2023 |
| 6183 | ROBINHILL | Washington County, PA | Oil & Gas Property | Feb 2024 |
| 6184 | ROBINSON | Warren County, PA | Oil & Gas Property | Dec 2022 |
| 6185 | ROBINSON | Fayette County, PA | Oil & Gas Property | Mar 2024 |
| 6186 | ROBINSON | Bradford County, PA | Gas Property | Feb 2024 |
| 6187 | ROBINSON | Susquehanna County, PA | Gas Property | Mar 2024 |
| 6188 | ROBINSON | Armstrong County, PA | Gas Property | Dec 2023 |
| 6189 | ROBINSON 82 | Indiana County, PA | Gas Property | Dec 2023 |
| 6190 | ROBINSON CAMPBELL 11132 | Washington County, PA | Gas Property | Feb 2024 |
| 6191 | ROBINSON FERGUSON | Bradford County, PA | Gas Property | Mar 2024 |
| 6192 | ROBY GROSE | Jefferson County, PA | Oil & Gas Property | Dec 2023 |
| 6193 | ROCHESTER & PGH | Clearfield County, PA | Gas Property | Dec 2023 |
| 6194 | ROCHESTER & PGH C | Indiana County, PA | Oil & Gas Property | Dec 2023 |
| 6195 | ROCHESTER & PGH COAL | Jefferson County, PA | Gas Property | Dec 2023 |
| 6196 | ROCHESTER & PGH COAL | Armstrong County, PA | Oil & Gas Property | Dec 2023 |
| 6197 | ROCHESTER & PGH COAL | Indiana County, PA | Oil & Gas Property | Dec 2023 |
| 6198 | ROCHESTER & PGH COAL CO | Indiana County, PA | Oil & Gas Property | Dec 2023 |
| 6199 | ROCHESTER & PGH COAL CO | Jefferson County, PA | Gas Property | Dec 2023 |
| 6200 | ROCHESTER & PGH COAL CO | Jefferson County, PA | Gas Property | Dec 2023 |