| 201 | DEVINNEY UNIT | Westmoreland County, PA | Gas Property | Jan 2025 |
| 202 | DEVLING | McKean County, PA | Oil & Gas Property | Dec 2024 |
| 203 | DEVON | McKean County, PA | Oil & Gas Property | Dec 2024 |
| 204 | DEVON COAST | McKean County, PA | Oil & Gas Property | Dec 2024 |
| 205 | DEVON INFILLS MSL | McKean County, PA | Oil & Gas Property | Dec 2024 |
| 206 | DEVONIAN OIL CO | McKean County, PA | Gas Property | Dec 2022 |
| 207 | DEVORE | Warren County, PA | Oil & Gas Property | Dec 2024 |
| 208 | DEWEES | Bradford County, PA | Gas Property | Jan 2025 |
| 209 | DEWEY | Armstrong County, PA | Oil & Gas Property | Dec 2024 |
| 210 | DEWING 05 100 0 | Bradford County, PA | Gas Property | Jan 2025 |
| 211 | DEYARMIN | Indiana County, PA | Gas Property | Dec 2024 |
| 212 | DF BROWN | Clarion County, PA | Oil & Gas Property | Dec 2024 |
| 213 | DF GOURLEY | Jefferson County, PA | Gas Property | Dec 2024 |
| 214 | DGSM | Bradford County, PA | Gas Property | Jan 2025 |
| 215 | DIAMOND | Fayette County, PA | Gas Property | Dec 2024 |
| 216 | DIAZ | Susquehanna County, PA | Gas Property | Jan 2025 |
| 217 | DIAZ FAMILY L P | Susquehanna County, PA | Gas Property | Jan 2025 |
| 218 | DIAZ FAMILY LP 0 | Susquehanna County, PA | Gas Property | Jan 2025 |
| 219 | DIAZ M 0 | Susquehanna County, PA | Gas Property | Jan 2025 |
| 220 | DIAZ M 06 | Susquehanna County, PA | Gas Property | Jan 2025 |
| 221 | DICARLO | Fayette County, PA | Oil & Gas Property | Jan 2025 |
| 222 | DICE | Fayette County, PA | Oil & Gas Property | Dec 2024 |
| 223 | DICENZO | Fayette County, PA | Gas Property | Dec 2024 |
| 224 | DICESARE F PARTNERSHIP 00 | Westmoreland County, PA | Gas Property | Dec 2024 |
| 225 | DICK | Fayette County, PA | Oil & Gas Property | Dec 2024 |
| 226 | DICK-1 | Indiana County, PA | Gas Property | Dec 2024 |
| 227 | DICKEY | Armstrong County, PA | Gas Property | Jan 2025 |
| 228 | DICKEY | Warren County, PA | Oil & Gas Property | Dec 2024 |
| 229 | DICKEY | Warren County, PA | Oil & Gas Property | Dec 2015 |
| 230 | DICKEY | Clearfield County, PA | Gas Property | Dec 2024 |
| 231 | DICKEY LUMBER CO | Clearfield County, PA | Gas Property | Dec 2024 |
| 232 | DICKINSON | Elk County, PA | Oil & Gas Property | Dec 2024 |
| 233 | DIKEMAN | McKean County, PA | Oil Property | Dec 2023 |
| 234 | DILLAWAY | Potter County, PA | Oil & Gas Property | Dec 2012 |
| 235 | DILLINGER EDWIN | Fayette County, PA | Gas Property | Dec 2023 |
| 236 | DILLON | Cambria County, PA | Gas Property | Dec 2024 |
| 237 | DILLON | Fayette County, PA | Gas Property | Dec 2024 |
| 238 | DIMMIG | Wyoming County, PA | Gas Property | Jan 2025 |
| 239 | DINDIOS | Cambria County, PA | Gas Property | Dec 2024 |
| 240 | DINNEEN | Crawford County, PA | Gas Property | Dec 2024 |
| 241 | DIOCESE OF ERIE | Warren County, PA | Gas Property | Dec 2024 |
| 242 | DIXON | Indiana County, PA | Oil & Gas Property | Dec 2024 |
| 243 | DIXON | Mercer County, PA | Oil & Gas Property | Dec 2024 |
| 244 | DIXON S LIGHTCAP | Indiana County, PA | Gas Property | Dec 2024 |
| 245 | DJ BRA | Bradford County, PA | Gas Property | Jan 2025 |
| 246 | DK GAS/HOLLOBAUGH | Clarion County, PA | Gas Property | Dec 2024 |
| 247 | DK GAS/ROGER SHORE TRACT | Clarion County, PA | Gas Property | Dec 2024 |
| 248 | DMC PROPERTIES | Washington County, PA | Gas Property | Jan 2025 |
| 249 | DOBROSIELSKI | Susquehanna County, PA | Gas Property | Jan 2025 |
| 250 | DOBSON | Jefferson County, PA | Gas Property | Dec 2024 |
| 251 | DOEBLER UNIT | Lycoming County, PA | Gas Property | Jan 2025 |
| 252 | DOG RUN HUNTING CLUB UNIT | Lycoming County, PA | Gas Property | Jan 2025 |
| 253 | DOLLIE BECKMAN | Clearfield County, PA | Gas Property | Dec 2024 |
| 254 | DON C FREDERICK | Venango County, PA | Oil Property | Dec 2024 |
| 255 | DON FLAMENCO | Greene County, PA | Gas Property | Jan 2025 |
| 256 | DON J DAVIS A | Lycoming County, PA | Gas Property | Jan 2025 |
| 257 | DONAHEY HEIRS | Washington County, PA | Oil Property | Dec 2012 |
| 258 | DONAHOO | Washington County, PA | Gas Property | Jan 2025 |
| 259 | DONAHUE & WHITE 0 | Warren County, PA | Oil & Gas Property | Dec 2024 |
| 260 | DONALD | Indiana County, PA | Oil & Gas Property | Dec 2024 |
| 261 | DONALD | Erie County, PA | Gas Property | Dec 2024 |
| 262 | DONALD BOGDANSKI ET AL | Indiana County, PA | Oil & Gas Property | Dec 2024 |
| 263 | DONALD E & MABEL S MARTIN | Indiana County, PA | Gas Property | Dec 2024 |
| 264 | DONALD G & LOIS JEAN WINDOWS | Armstrong County, PA | Gas Property | Dec 2024 |
| 265 | DONALD H | Crawford County, PA | Gas Property | Dec 2024 |
| 266 | DONALD MAUTHE | Clarion County, PA | Gas Property | Dec 2024 |
| 267 | DONALD MCCRAY | Crawford County, PA | Gas Property | Dec 2024 |
| 268 | DONALD P MCPHERSON | Indiana County, PA | Oil & Gas Property | Dec 2024 |
| 269 | DONALD POWELL | Jefferson County, PA | Gas Property | Dec 2024 |
| 270 | DONALD SHIREY | Clarion County, PA | Gas Property | Dec 2024 |
| 271 | DONALD STREAMS | Indiana County, PA | Gas Property | Dec 2024 |
| 272 | DONALD STROUP | Armstrong County, PA | Gas Property | Dec 2024 |
| 273 | DONALD W DEITZ | Clarion County, PA | Oil & Gas Property | Dec 2024 |
| 274 | DONALD W STREAMS | Indiana County, PA | Gas Property | Dec 2023 |
| 275 | DONEY | Westmoreland County, PA | Oil & Gas Property | Jan 2025 |
| 276 | DONLEY | Greene County, PA | Oil & Gas Property | Jan 2025 |
| 277 | DONNA | Bradford County, PA | Gas Property | Jan 2025 |
| 278 | DONNA CLARE DC | Forest County, PA | Oil & Gas Property | Dec 2024 |
| 279 | DONOVAN OR STEWART RUN CLUB | Venango County, PA | Oil Property | Dec 2024 |
| 280 | DONOVAN/STEWART RUN CLUB | Venango County, PA | Oil Property | Dec 2024 |
| 281 | DORADO | Butler County, PA | Gas Property | Jan 2025 |
| 282 | DORAZIO | Fayette County, PA | Gas Property | Dec 2024 |
| 283 | DORN (02-180 | Tioga County, PA | Gas Property | Jan 2025 |
| 284 | DOROTHEA TAYLOR T | Warren County, PA | Oil & Gas Property | Dec 2024 |
| 285 | DOROTHY MCNAUGHTON | Indiana County, PA | Gas Property | Dec 2024 |
| 286 | DORSCH UNIT | Butler County, PA | Oil & Gas Property | Jan 2025 |
| 287 | DOSS | Bradford County, PA | Gas Property | Jan 2025 |
| 288 | DOTTS | Clearfield County, PA | Gas Property | Dec 2024 |
| 289 | DOTY | Fayette County, PA | Oil & Gas Property | Dec 2024 |
| 290 | DOUGHERTY | Clarion County, PA | Oil & Gas Property | Dec 2024 |
| 291 | DOUGHERTY HEIRS | Clarion County, PA | Gas Property | Dec 2024 |
| 292 | DOUGLAS BIEDA | Westmoreland County, PA | Gas Property | Dec 2024 |
| 293 | DOUGLAS E. BIEDA | Indiana County, PA | Gas Property | Dec 2024 |
| 294 | DOUGLAS G MINICH | Clarion County, PA | Gas Property | Dec 2024 |
| 295 | DOUGLAS HEIRS | Indiana County, PA | Gas Property | Dec 2024 |
| 296 | DOUGLAS MINICH | Clarion County, PA | Gas Property | Dec 2024 |
| 297 | DOUTHIT 00 | Jefferson County, PA | Gas Property | Dec 2024 |
| 298 | DOVEN SPIKE | Clarion County, PA | Oil & Gas Property | Dec 2020 |
| 299 | DOVERSPIKE | Jefferson County, PA | Gas Property | Dec 2024 |
| 300 | DOVERSPIKE | Armstrong County, PA | Gas Property | Dec 2024 |