| 301 | YELLOWSTONE | Gonzales County, TX | Oil & Gas Property | Mar 2026 |
| 302 | YELLOWSTONE | McKenzie County, ND | Oil & Gas Property | Mar 2026 |
| 303 | YELLOWSTONE | Scurry County, TX | Oil & Gas Property | Mar 2026 |
| 304 | YELLOWSTONE | Kern County, CA | Oil & Gas Property | Feb 2026 |
| 305 | YELLOWSTONE | Lincoln County, CO | Oil & Gas Property | May 2025 |
| 306 | YELLOWSTONE | Washington County, TX | Oil & Gas Property | Mar 2026 |
| 307 | YELLOWSTONE 148-95-02B-11H | Dunn County, ND | Oil & Gas Property | Mar 2026 |
| 308 | YELLOWSTONE 1505 | Kingfisher County, OK | Oil & Gas Property | Feb 2026 |
| 309 | YELLOWSTONE 2200 UNIT | Midland County, TX | Oil & Gas Property | Mar 2026 |
| 310 | YELLOWSTONE 23 STATE COM | Eddy County, NM | Oil & Gas Property | Apr 2026 |
| 311 | YELLOWSTONE 44X-29 | Richland County, MT | Oil & Gas Property | Mar 2026 |
| 312 | YELVERTON | Smith County, MS | Oil & Gas Property | May 2010 |
| 313 | YENCHA | Bradford County, PA | Gas Property | Mar 2026 |
| 314 | YENDREY | Jackson County, TX | Oil & Gas Property | Mar 2026 |
| 315 | YENGO | Sullivan County, PA | Gas Property | Mar 2026 |
| 316 | YENKO | Laramie County, WY | Oil & Gas Property | Mar 2026 |
| 317 | YENTER | Logan County, CO | Oil Property | Dec 2013 |
| 318 | YENTER | Yuma County, CO | Gas Property | Feb 2026 |
| 319 | YENTER | Yuma County, CO | Oil & Gas Property | Feb 2026 |
| 320 | YENTZER YX | Potter County, PA | Gas Property | Dec 2025 |
| 321 | YERGENSEN | Duchesne County, UT | Oil & Gas Property | Mar 2026 |
| 322 | YERIAN | Grant County, OK | Oil & Gas Property | Mar 2026 |
| 323 | YERKEY, JOHN | Doddridge County, WV | Oil & Gas Property | Dec 2021 |
| 324 | YESENKO USA 11-21TFH | McKenzie County, ND | Oil & Gas Property | Mar 2026 |
| 325 | YESKA 1 | Phillips County, MT | Gas Property | Mar 2026 |
| 326 | YESKO | Mercer County, PA | Oil & Gas Property | Dec 2025 |
| 327 | YESO STATE | Lea County, NM | Oil & Gas Property | Oct 2022 |
| 328 | YESO VIKING FEDERAL | Eddy County, NM | Oil & Gas Property | Mar 2026 |
| 329 | YESTER | Washington County, OH | Oil & Gas Property | Dec 2024 |
| 330 | YETI STATE 56-2-4 | Reeves County, TX | Oil & Gas Property | Mar 2026 |
| 331 | YETI UNIT | Borden County, TX | Oil & Gas Property | Mar 2026 |
| 332 | YETT RANCH | Dimmit County, TX | Oil & Gas Property | Mar 2026 |
| 333 | YEWELL | Union County, KY | Oil Property | Dec 2023 |
| 334 | YF 3 | Montezuma County, CO | Oil & Gas Property | Mar 2026 |
| 335 | YG 1 | Montezuma County, CO | Oil & Gas Property | Mar 2026 |
| 336 | YINGLING | White County, AR | Gas Property | Jun 2024 |
| 337 | YINGLING | White County, AR | Gas Property | Jun 2024 |
| 338 | YIPPI KI-YAY | Grady County, OK | Oil & Gas Property | Feb 2026 |
| 339 | YIRSA | Nowata County, OK | Oil & Gas Property | Sep 2023 |
| 340 | YMC 9 | Loving County, TX | Oil & Gas Property | Mar 2026 |
| 341 | YMCA | Geauga County, OH | Oil & Gas Property | Dec 2024 |
| 342 | YMCA B | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 343 | YNA 1 | Lavaca County, TX | Oil & Gas Property | Mar 2020 |
| 344 | YOAK, CREED | Calhoun County, WV | Oil & Gas Property | Dec 2021 |
| 345 | YOAK, ORVILLE R | Calhoun County, WV | Oil & Gas Property | Dec 2021 |
| 346 | YOAKUM | Pontotoc County, OK | Oil & Gas Property | Jul 2018 |
| 347 | YOAKUM WASSON CLEARFORK UNIT | Yoakum County, TX | Oil & Gas Property | Mar 2026 |
| 348 | YOCAM | Weld County, CO | Oil & Gas Property | Sep 2021 |
| 349 | YOCHAM J.W | Schleicher County, TX | Oil & Gas Property | Mar 2026 |
| 350 | YOCHAM-WRIGHT | Creek County, OK | Oil Property | Mar 2026 |
| 351 | YOCHYM, CHARLES G | Lewis County, WV | Oil & Gas Property | Dec 2021 |
| 352 | YOCHYM, ROSE MULLOOLY | Lewis County, WV | Oil & Gas Property | Dec 2021 |
| 353 | YOCKEY | San Juan County, NM | Gas Property | Mar 2026 |
| 354 | YOCKEY 18-9-7 | Guernsey County, OH | Oil & Gas Property | Dec 2025 |
| 355 | YOCKIM 14-8H | Dunn County, ND | Oil & Gas Property | Mar 2026 |
| 356 | YOCUM | Union County, AR | Oil Property | Feb 1963 |
| 357 | YOCUM | Blaine County, OK | Oil & Gas Property | Feb 2026 |
| 358 | YOCUM | Elk County, PA | Oil & Gas Property | Dec 2000 |
| 359 | YOCUM-NEWCOMER | Fayette County, PA | Gas Property | Dec 2025 |
| 360 | YODA | Howard County, TX | Oil & Gas Property | Mar 2026 |
| 361 | YODER | Stark County, OH | Oil & Gas Property | Dec 2024 |
| 362 | YODER | Mercer County, PA | Gas Property | Dec 2025 |
| 363 | YODER | Fayette County, PA | Oil & Gas Property | Mar 2026 |
| 364 | YODER | Custer County, OK | Oil & Gas Property | Feb 2026 |
| 365 | YODER | Cattaraugus County, NY | Gas Property | Dec 2024 |
| 366 | YODER | Crawford County, PA | Oil & Gas Property | Dec 2025 |
| 367 | YODER | Bradford County, PA | Gas Property | Mar 2026 |
| 368 | YODER | Coshocton County, OH | Oil & Gas Property | Dec 2025 |
| 369 | YODER | Tuscarawas County, OH | Oil & Gas Property | Dec 2025 |
| 370 | YODER | Geauga County, OH | Oil & Gas Property | Dec 2025 |
| 371 | YODER | Holmes County, OH | Oil & Gas Property | Dec 2025 |
| 372 | YODER | Fayette County, PA | Gas Property | Dec 2025 |
| 373 | YODER | Holmes County, OH | Oil & Gas Property | Dec 2022 |
| 374 | YODER #1 | Ellis County, OK | Oil & Gas Property | Feb 2026 |
| 375 | YODER 33-12-5 | Harrison County, OH | Oil & Gas Property | Dec 2025 |
| 376 | YODER AL | Holmes County, OH | Oil & Gas Property | Dec 2025 |
| 377 | YODER C | Holmes County, OH | Oil & Gas Property | Dec 2024 |
| 378 | YODER LUMBER | Holmes County, OH | Oil & Gas Property | Dec 2025 |
| 379 | YODER NORTH 33-12-5 | Harrison County, OH | Oil & Gas Property | Dec 2025 |
| 380 | YODER UNIT | Bradford County, PA | Gas Property | Mar 2026 |
| 381 | YODER, NOAH L & EMMA | Ritchie County, WV | Oil & Gas Property | Dec 2021 |
| 382 | YOES | Gray County, TX | Oil & Gas Property | Mar 2026 |
| 383 | YOGI 14-7H-0607-15895-TF | Williams County, ND | Oil & Gas Property | Mar 2026 |
| 384 | YOGI 1808 | Kingfisher County, OK | Oil & Gas Property | Feb 2026 |
| 385 | YOGI 19/18 MD | Ellis County, OK | Oil & Gas Property | Feb 2026 |
| 386 | YOGI BEAR STATE 3H | Divide County, ND | Oil & Gas Property | Apr 2026 |
| 387 | YOGI FED | Converse County, WY | Oil & Gas Property | Mar 2026 |
| 388 | YOHE | Rooks County, KS | Oil Property | Jul 2025 |
| 389 | YOHE | Westmoreland County, PA | Oil & Gas Property | Dec 2025 |
| 390 | YOHE FEE "A" (M-599) 1 | Clearfield County, PA | Gas Property | Dec 2025 |
| 391 | YOHE M-599 | Clearfield County, PA | Gas Property | Dec 2025 |
| 392 | YOHN 'A' | Kiowa County, KS | Oil & Gas Property | Jan 2026 |
| 393 | YOHO | Campbell County, WY | Gas Property | Dec 2006 |
| 394 | YOHON | Woodson County, KS | Oil Property | Dec 2025 |
| 395 | YOKLEY | Hemphill County, TX | Oil & Gas Property | Mar 2026 |
| 396 | YOKO CS STATE | Johnson County, WY | Gas Property | Feb 2012 |
| 397 | YOKUM UL | Loving County, TX | Oil & Gas Property | Mar 2026 |
| 398 | YOKUM UL 19-0-8-4 | Loving County, TX | Oil & Gas Property | Mar 2026 |
| 399 | YOKUM, ROBERT B. F. NULL | Ritchie County, WV | Oil & Gas Property | Oct 2020 |
| 400 | YOLO-RANCH | Yolo County, CA | Gas Property | Sep 1994 |