| 401 | YOKO CS STATE | Johnson County, WY | Gas Property | Feb 2012 |
| 402 | YOKUM UL | Loving County, TX | Oil & Gas Property | Jan 2026 |
| 403 | YOKUM UL 19-0-8-4 | Loving County, TX | Oil & Gas Property | Jan 2026 |
| 404 | YOKUM, ROBERT B. F. NULL | Ritchie County, WV | Oil & Gas Property | Oct 2020 |
| 405 | YOLO-RANCH | Yolo County, CA | Gas Property | Sep 1994 |
| 406 | YONDER 05 | Canadian County, OK | Oil & Gas Property | Dec 2025 |
| 407 | YONKEE | Campbell County, WY | Gas Property | May 2009 |
| 408 | YONKEE | Campbell County, WY | Gas Property | May 2016 |
| 409 | YONKER GEORGE 11360 | Washington County, PA | Gas Property | Jan 2026 |
| 410 | YONKIN | Sullivan County, PA | Gas Property | Jan 2026 |
| 411 | YONTZ UNIT 1H | Monroe County, OH | Oil & Gas Property | Dec 2025 |
| 412 | YORBA | Orange County, CA | Oil & Gas Property | Feb 1979 |
| 413 | YORBA LINDA | Orange County, CA | Oil Property | Jan 1993 |
| 414 | YORK | Clark County, KS | Gas Property | Sep 2018 |
| 415 | YORK | Wayne County, WV | Gas Property | Jun 2010 |
| 416 | YORK | Archer County, TX | Oil Property | Jan 2026 |
| 417 | YORK | Fisher County, TX | Oil & Gas Property | May 2020 |
| 418 | YORK | Blaine County, OK | Oil & Gas Property | Dec 2025 |
| 419 | YORK | Campbell County, WY | Oil Property | Feb 2026 |
| 420 | YORK | Ector County, TX | Oil & Gas Property | Apr 2020 |
| 421 | YORK | Los Angeles County, CA | Oil & Gas Property | Jun 2025 |
| 422 | YORK | Comanche County, KS | Oil & Gas Property | Dec 2025 |
| 423 | YORK | Tarrant County, TX | Gas Property | Jan 2026 |
| 424 | YORK | Comanche County, KS | Oil & Gas Property | Sep 2015 |
| 425 | YORK | Beaver County, OK | Gas Property | Feb 2015 |
| 426 | YORK | Mitchell County, TX | Oil & Gas Property | Jan 2026 |
| 427 | YORK | Van Zandt County, TX | Oil & Gas Property | Jan 2026 |
| 428 | YORK | Live Oak County, TX | Oil & Gas Property | Jan 2026 |
| 429 | YORK | Lane County, KS | Oil Property | Nov 2025 |
| 430 | YORK | Lee County, TX | Oil & Gas Property | Jan 2026 |
| 431 | YORK | Ward County, TX | Oil & Gas Property | Jan 2026 |
| 432 | YORK | Los Angeles County, CA | Oil Property | Jan 1993 |
| 433 | YORK | Brown County, TX | Oil & Gas Property | Jan 2026 |
| 434 | YORK | Lane County, KS | Oil Property | Dec 2025 |
| 435 | YORK | Wilson County, KS | Gas Property | Jan 2025 |
| 436 | YORK | Scott County, KS | Oil Property | Dec 2025 |
| 437 | YORK (07-088 | Susquehanna County, PA | Gas Property | Jan 2026 |
| 438 | YORK 1-2H | McKenzie County, ND | Oil & Gas Property | Feb 2026 |
| 439 | YORK 12-33-70 | Converse County, WY | Oil & Gas Property | Jan 2026 |
| 440 | YORK 19-33-69 USA A TR20H | Converse County, WY | Oil & Gas Property | Jan 2026 |
| 441 | YORK 480 | Tioga County, PA | Gas Property | Jan 2026 |
| 442 | YORK B. P | Freestone County, TX | Oil & Gas Property | Jul 2010 |
| 443 | YORK ESTATE -B | Archer County, TX | Oil & Gas Property | Jan 2026 |
| 444 | YORK PLANTATION | Adams County, MS | Oil & Gas Property | Jan 1981 |
| 445 | YORK RANCH | Converse County, WY | Oil & Gas Property | Jan 2026 |
| 446 | YORK STATE 33 1H | Reeves County, TX | Oil & Gas Property | Jan 2026 |
| 447 | YORK SU | San Augustine County, TX | Gas Property | Jan 2026 |
| 448 | YORK, AD | Clinton County, KY | Oil Property | Dec 2016 |
| 449 | YORK, B H EST | Archer County, TX | Oil & Gas Property | Jan 2026 |
| 450 | YORK, MA | Cumberland County, KY | Gas Property | Dec 2005 |
| 451 | YORK-LAW 139 | Martin County, TX | Oil & Gas Property | Jan 2026 |
| 452 | YORK-PIXLEE | Greenwood County, KS | Oil Property | Dec 2025 |
| 453 | YORK-SHANAHAN COMM | Los Angeles County, CA | Oil Property | Dec 1989 |
| 454 | YORK-WH | Gregg County, TX | Oil & Gas Property | Dec 2025 |
| 455 | YORKTOWN | Glasscock County, TX | Oil & Gas Property | Jan 2026 |
| 456 | YORKTOWN | Dewitt County, TX | Oil & Gas Property | Jan 2026 |
| 457 | YORKTOWN 12 FEE | Chaves County, NM | Oil & Gas Property | Jan 2026 |
| 458 | YORKTOWN STATE | Reeves County, TX | Oil & Gas Property | Jan 2026 |
| 459 | YORN | Tarrant County, TX | Gas Property | Dec 2025 |
| 460 | YOSEF THE MOUNTAINEER 29-41 | Howard County, TX | Oil & Gas Property | Dec 2025 |
| 461 | YOSEMITE | Gonzales County, TX | Oil & Gas Property | Jan 2026 |
| 462 | YOSEMITE 12-27 | Scurry County, TX | Oil & Gas Property | Jan 2026 |
| 463 | YOSEMITE 148-95-02A-11H | Dunn County, ND | Oil & Gas Property | Feb 2026 |
| 464 | YOSEMITE 18-13-32 | Blaine County, OK | Oil & Gas Property | Dec 2025 |
| 465 | YOSEMITE SAM | Carter County, OK | Oil & Gas Property | Dec 2025 |
| 466 | YOSEMITE SAM UNIT | Hood County, TX | Oil & Gas Property | Jan 2026 |
| 467 | YOSHI 0304 | Garvin County, OK | Oil & Gas Property | Dec 2025 |
| 468 | YOSHI 1606 | Kingfisher County, OK | Oil & Gas Property | Dec 2025 |
| 469 | YOSKO | Wilson County, TX | Oil & Gas Property | Jan 2026 |
| 470 | YOSKO BORGFELD | Karnes County, TX | Oil & Gas Property | Jan 2026 |
| 471 | YOSKO UNIT | Karnes County, TX | Oil & Gas Property | Jan 2026 |
| 472 | YOSKO WITTE UNIT | Karnes County, TX | Oil & Gas Property | Jul 2025 |
| 473 | YOSKO-KINKLER | Karnes County, TX | Oil & Gas Property | Jan 2026 |
| 474 | YOSKO-SALGE-KINKLER UNIT SA | Karnes County, TX | Oil & Gas Property | Jan 2026 |
| 475 | YOST | Kingfisher County, OK | Oil & Gas Property | Dec 2025 |
| 476 | YOST | Payne County, OK | Oil & Gas Property | Dec 2017 |
| 477 | YOST | Kiowa County, KS | Oil & Gas Property | Dec 2025 |
| 478 | YOST | Kiowa County, KS | Oil & Gas Property | May 2012 |
| 479 | YOST | Comanche County, KS | Oil & Gas Property | Oct 2025 |
| 480 | YOST | Noble County, OK | Gas Property | May 2016 |
| 481 | YOST | Kingfisher County, OK | Oil & Gas Property | Dec 2025 |
| 482 | YOST | Ness County, KS | Oil Property | Oct 1992 |
| 483 | YOST | Geary County, KS | Oil Property | Dec 2025 |
| 484 | YOST | Washington County, OH | Oil & Gas Property | Dec 2006 |
| 485 | YOST | Greene County, PA | Oil & Gas Property | Dec 2025 |
| 486 | YOST | Washington County, OH | Oil & Gas Property | Dec 2025 |
| 487 | YOST | Noble County, OK | Oil & Gas Property | Feb 2016 |
| 488 | YOST | Ness County, KS | Oil Property | Dec 2025 |
| 489 | YOST | Lane County, KS | Oil Property | Aug 2016 |
| 490 | YOST | Graham County, KS | Oil Property | Oct 2025 |
| 491 | YOST | Payne County, OK | Oil & Gas Property | Dec 2025 |
| 492 | YOST | Guernsey County, OH | Oil & Gas Property | Dec 2025 |
| 493 | YOST | Kiowa County, KS | Oil & Gas Property | Dec 2025 |
| 494 | YOST | Kingfisher County, OK | Oil & Gas Property | Dec 2025 |
| 495 | YOST | Comanche County, KS | Oil & Gas Property | Oct 2025 |
| 496 | YOST | Kingfisher County, OK | Oil & Gas Property | Dec 2025 |
| 497 | YOST 1 | Payne County, OK | Oil & Gas Property | Jun 2025 |
| 498 | YOST 1 | Kingfisher County, OK | Oil & Gas Property | Dec 2025 |
| 499 | YOST 2-15N-10W | Blaine County, OK | Oil & Gas Property | Dec 2025 |
| 500 | YOST BRA | Bradford County, PA | Gas Property | Jan 2026 |