| 201 | DEVON INFILLS MSL | McKean County, PA | Oil & Gas Property | Dec 2025 |
| 202 | DEVONIAN OIL CO | McKean County, PA | Gas Property | Dec 2025 |
| 203 | DEVORE | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 204 | DEWEES | Bradford County, PA | Gas Property | Apr 2026 |
| 205 | DEWEY | Armstrong County, PA | Oil & Gas Property | Dec 2025 |
| 206 | DEWING 05 100 0 | Bradford County, PA | Gas Property | Apr 2026 |
| 207 | DEYARMIN | Indiana County, PA | Gas Property | Dec 2025 |
| 208 | DF BROWN | Clarion County, PA | Oil & Gas Property | Dec 2025 |
| 209 | DF GOURLEY | Jefferson County, PA | Gas Property | Dec 2025 |
| 210 | DGSM | Bradford County, PA | Gas Property | Apr 2026 |
| 211 | DIAMOND | Fayette County, PA | Gas Property | Dec 2024 |
| 212 | DIAZ | Susquehanna County, PA | Gas Property | Apr 2026 |
| 213 | DIAZ FAMILY L P | Susquehanna County, PA | Gas Property | Apr 2026 |
| 214 | DIAZ FAMILY LP 0 | Susquehanna County, PA | Gas Property | Apr 2026 |
| 215 | DIAZ M 0 | Susquehanna County, PA | Gas Property | Apr 2026 |
| 216 | DIAZ M 06 | Susquehanna County, PA | Gas Property | Apr 2026 |
| 217 | DICARLO | Fayette County, PA | Oil & Gas Property | Apr 2026 |
| 218 | DICE | Fayette County, PA | Oil & Gas Property | Dec 2025 |
| 219 | DICENZO | Fayette County, PA | Gas Property | Dec 2025 |
| 220 | DICESARE F PARTNERSHIP 00 | Westmoreland County, PA | Gas Property | Dec 2025 |
| 221 | DICK | Fayette County, PA | Oil & Gas Property | Dec 2025 |
| 222 | DICK-1 | Indiana County, PA | Gas Property | Dec 2025 |
| 223 | DICKEY | Armstrong County, PA | Gas Property | Apr 2026 |
| 224 | DICKEY | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 225 | DICKEY | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 226 | DICKEY | Clearfield County, PA | Gas Property | Dec 2025 |
| 227 | DICKEY LUMBER CO | Clearfield County, PA | Gas Property | Dec 2025 |
| 228 | DICKINSON | Elk County, PA | Oil & Gas Property | Dec 2025 |
| 229 | DIKEMAN | McKean County, PA | Oil Property | Dec 2023 |
| 230 | DILLAWAY | Potter County, PA | Oil & Gas Property | Dec 2012 |
| 231 | DILLINGER EDWIN | Fayette County, PA | Gas Property | Dec 2025 |
| 232 | DILLON | Cambria County, PA | Gas Property | Dec 2025 |
| 233 | DILLON | Fayette County, PA | Gas Property | Dec 2025 |
| 234 | DIMMIG | Wyoming County, PA | Gas Property | Apr 2026 |
| 235 | DINDIOS | Cambria County, PA | Gas Property | Dec 2025 |
| 236 | DINNEEN | Crawford County, PA | Gas Property | Dec 2025 |
| 237 | DIOCESE OF ERIE | Warren County, PA | Gas Property | Dec 2025 |
| 238 | DIXON | Indiana County, PA | Oil & Gas Property | Dec 2025 |
| 239 | DIXON | Mercer County, PA | Oil & Gas Property | Dec 2025 |
| 240 | DIXON S LIGHTCAP | Indiana County, PA | Gas Property | Dec 2025 |
| 241 | DJ BRA | Bradford County, PA | Gas Property | Apr 2026 |
| 242 | DK GAS/HOLLOBAUGH | Clarion County, PA | Gas Property | Dec 2025 |
| 243 | DK GAS/ROGER SHORE TRACT | Clarion County, PA | Gas Property | Dec 2025 |
| 244 | DMC PROPERTIES | Washington County, PA | Gas Property | Apr 2026 |
| 245 | DOBROSIELSKI | Susquehanna County, PA | Gas Property | Apr 2026 |
| 246 | DOBSON | Jefferson County, PA | Gas Property | Dec 2025 |
| 247 | DOEBLER UNIT | Lycoming County, PA | Gas Property | Apr 2026 |
| 248 | DOG RUN HUNTING CLUB UNIT | Lycoming County, PA | Gas Property | Apr 2026 |
| 249 | DOLLIE BECKMAN | Clearfield County, PA | Gas Property | Dec 2025 |
| 250 | DON C FREDERICK | Venango County, PA | Oil Property | Dec 2025 |
| 251 | DON FLAMENCO | Greene County, PA | Gas Property | Apr 2026 |
| 252 | DON J DAVIS A | Lycoming County, PA | Gas Property | Apr 2026 |
| 253 | DONAHEY HEIRS | Washington County, PA | Oil Property | Dec 2012 |
| 254 | DONAHOO | Washington County, PA | Gas Property | Apr 2026 |
| 255 | DONAHUE & WHITE 0 | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 256 | DONALD | Indiana County, PA | Oil & Gas Property | Dec 2025 |
| 257 | DONALD | Erie County, PA | Gas Property | Dec 2025 |
| 258 | DONALD BOGDANSKI ET AL | Indiana County, PA | Oil & Gas Property | Dec 2025 |
| 259 | DONALD E & MABEL S MARTIN | Indiana County, PA | Gas Property | Dec 2025 |
| 260 | DONALD G & LOIS JEAN WINDOWS | Armstrong County, PA | Gas Property | Dec 2025 |
| 261 | DONALD H | Crawford County, PA | Gas Property | Dec 2025 |
| 262 | DONALD MAUTHE | Clarion County, PA | Gas Property | Dec 2025 |
| 263 | DONALD MCCRAY | Crawford County, PA | Gas Property | Dec 2025 |
| 264 | DONALD P MCPHERSON | Indiana County, PA | Oil & Gas Property | Dec 2025 |
| 265 | DONALD POWELL | Jefferson County, PA | Gas Property | Dec 2025 |
| 266 | DONALD SHIREY | Clarion County, PA | Gas Property | Dec 2025 |
| 267 | DONALD STREAMS | Indiana County, PA | Gas Property | Dec 2025 |
| 268 | DONALD STROUP | Armstrong County, PA | Gas Property | Dec 2025 |
| 269 | DONALD W DEITZ | Clarion County, PA | Oil & Gas Property | Dec 2024 |
| 270 | DONALD W STREAMS | Indiana County, PA | Gas Property | Dec 2025 |
| 271 | DONEY | Westmoreland County, PA | Oil & Gas Property | Apr 2026 |
| 272 | DONLEY | Greene County, PA | Oil & Gas Property | Apr 2026 |
| 273 | DONNA | Bradford County, PA | Gas Property | Apr 2026 |
| 274 | DONNA CLARE DC | Forest County, PA | Oil & Gas Property | Dec 2025 |
| 275 | DONOVAN OR STEWART RUN CLUB | Venango County, PA | Oil Property | Dec 2025 |
| 276 | DONOVAN/STEWART RUN CLUB | Venango County, PA | Oil Property | Dec 2025 |
| 277 | DORADO | Butler County, PA | Gas Property | Apr 2026 |
| 278 | DORAZIO | Fayette County, PA | Gas Property | Dec 2025 |
| 279 | DORN (02-180 | Tioga County, PA | Gas Property | Apr 2026 |
| 280 | DOROTHEA TAYLOR T | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 281 | DOROTHY MCNAUGHTON | Indiana County, PA | Gas Property | Dec 2025 |
| 282 | DORSCH UNIT | Butler County, PA | Oil & Gas Property | Apr 2026 |
| 283 | DOSS | Bradford County, PA | Gas Property | Apr 2026 |
| 284 | DOTTS | Clearfield County, PA | Gas Property | Dec 2025 |
| 285 | DOTY | Fayette County, PA | Oil & Gas Property | Dec 2025 |
| 286 | DOUGHERTY | Clarion County, PA | Oil & Gas Property | Dec 2025 |
| 287 | DOUGHERTY HEIRS | Clarion County, PA | Gas Property | Dec 2025 |
| 288 | DOUGLAS BIEDA | Westmoreland County, PA | Gas Property | Dec 2025 |
| 289 | DOUGLAS E. BIEDA | Indiana County, PA | Gas Property | Dec 2025 |
| 290 | DOUGLAS G MINICH | Clarion County, PA | Gas Property | Dec 2025 |
| 291 | DOUGLAS HEIRS | Indiana County, PA | Gas Property | Dec 2025 |
| 292 | DOUGLAS MINICH | Clarion County, PA | Gas Property | Dec 2025 |
| 293 | DOUTHIT 00 | Jefferson County, PA | Gas Property | Dec 2025 |
| 294 | DOVEN SPIKE | Clarion County, PA | Oil & Gas Property | Dec 2025 |
| 295 | DOVERSPIKE | Jefferson County, PA | Gas Property | Dec 2025 |
| 296 | DOVERSPIKE | Armstrong County, PA | Gas Property | Dec 2025 |
| 297 | DOVERSPIKE EBERLE 00 | Armstrong County, PA | Gas Property | Dec 2025 |
| 298 | DOWER | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 299 | DPH NE 1H | Wyoming County, PA | Gas Property | Apr 2026 |
| 300 | DPH NW | Wyoming County, PA | Gas Property | Apr 2026 |