| 501 | IPCO-E JOHNSON (AW) | Panola County, TX | Oil & Gas Property | Jan 2024 |
| 502 | IPCO-MOBIL | Webster Parish, LA | Oil & Gas Property | Dec 2023 |
| 503 | IPRC | Union County, AR | Oil Property | Aug 2023 |
| 504 | IPT 2710 | Alfalfa County, OK | Oil & Gas Property | Jan 2024 |
| 505 | IRA HEARD | Refugio County, TX | Oil & Gas Property | Oct 2015 |
| 506 | IRA N | Scurry County, TX | Oil & Gas Property | Jan 2024 |
| 507 | IRA N. W | Scurry County, TX | Oil & Gas Property | Jan 2024 |
| 508 | IRA NORTHRUP | Ellis County, OK | Oil & Gas Property | Oct 2014 |
| 509 | IRA PERKINS | Teton County, MT | Oil & Gas Property | Oct 2023 |
| 510 | IRA STRANGE | Caddo Parish, LA | Oil Property | Oct 2023 |
| 511 | IRA SURBER | Glacier County, MT | Gas Property | Feb 2024 |
| 512 | IRA& LAURA PRITT PRITT SOUTH 2 | Harrison County, WV | Gas Property | Dec 2021 |
| 513 | IRA(1700 ZONE)UNIT | Scurry County, TX | Oil & Gas Property | Jan 2024 |
| 514 | IRACA | Clearfield County, PA | Gas Property | Dec 2023 |
| 515 | IRBY | Archer County, TX | Oil Property | Sep 2022 |
| 516 | IRBY | Union County, AR | Oil & Gas Property | Dec 1993 |
| 517 | IRBY | Grayson County, TX | Oil & Gas Property | Jan 2024 |
| 518 | IRBY | Okmulgee County, OK | Oil & Gas Property | May 2016 |
| 519 | IRED STATE | Rio Arriba County, NM | Oil & Gas Property | Feb 2024 |
| 520 | IREDELL | Fresno County, CA | Oil Property | Apr 1990 |
| 521 | IRELAN | Creek County, OK | Oil Property | Nov 2023 |
| 522 | IRELAND | Lewis County, WV | Oil & Gas Property | Dec 2021 |
| 523 | IRELAND | Ritchie County, WV | Oil & Gas Property | Dec 2021 |
| 524 | IRELAND | Ventura County, CA | Oil & Gas Property | Feb 2021 |
| 525 | IRELAND | Upshur County, WV | Oil & Gas Property | Dec 2021 |
| 526 | IRELAND | Portage County, OH | Oil & Gas Property | Dec 2022 |
| 527 | IRELAND UNIT | Denton County, TX | Oil & Gas Property | Jan 2024 |
| 528 | IRELAND, EMMAL | Ritchie County, WV | Oil & Gas Property | Dec 2021 |
| 529 | IRELAND, GUY | Ritchie County, WV | Oil & Gas Property | Dec 2021 |
| 530 | IRELAND, KAREN | Doddridge County, WV | Oil & Gas Property | Dec 2021 |
| 531 | IRELAND, LYNWOOD | Ritchie County, WV | Oil & Gas Property | Dec 2021 |
| 532 | IRENE | Zapata County, TX | Oil & Gas Property | Jan 2024 |
| 533 | IRENE | Pittsburg County, OK | Gas Property | Dec 2023 |
| 534 | IRENE | Roger Mills County, OK | Oil & Gas Property | Dec 2023 |
| 535 | IRENE | Texas County, OK | Oil & Gas Property | Dec 2023 |
| 536 | IRENE | Brazos County, TX | Oil & Gas Property | Jan 2024 |
| 537 | IRENE | Payne County, OK | Oil & Gas Property | Nov 1999 |
| 538 | IRENE | Dewey County, OK | Oil & Gas Property | Dec 2023 |
| 539 | IRENE | Love County, OK | Oil & Gas Property | Dec 2023 |
| 540 | IRENE 12-13H-24 | Mountrail County, ND | Oil & Gas Property | Feb 2024 |
| 541 | IRENE 2 | Woods County, OK | Oil & Gas Property | Jun 2022 |
| 542 | IRENE B 2-28-17 | Woods County, OK | Oil & Gas Property | Jan 2024 |
| 543 | IRENE BASH | Indiana County, PA | Gas Property | Dec 2023 |
| 544 | IRENE DEEM ETAL | Washington County, OH | Oil & Gas Property | Dec 2010 |
| 545 | IRENE DIXON | Hemphill County, TX | Oil & Gas Property | Nov 2023 |
| 546 | IRENE ELL 11-1H | Dunn County, ND | Oil & Gas Property | Feb 2024 |
| 547 | IRENE HOVLAND 26-35 XE #1H | Williams County, ND | Oil & Gas Property | Feb 2024 |
| 548 | IRENE KOVALOFF | Dunn County, ND | Oil & Gas Property | Feb 2024 |
| 549 | IRENE O UNIT 3-18 | Reeves County, TX | Oil & Gas Property | Jan 2024 |
| 550 | IRENE RANCH | Converse County, WY | Oil & Gas Property | Aug 2021 |
| 551 | IRENE W WICKER | Claiborne Parish, LA | Oil & Gas Property | Dec 2023 |
| 552 | IRETA | Blaine County, OK | Oil & Gas Property | Dec 2023 |
| 553 | IRETON | Dewey County, OK | Oil & Gas Property | Dec 2023 |
| 554 | IRETON UNIT | Martin County, TX | Oil & Gas Property | Jan 2024 |
| 555 | IRGENS | Williams County, ND | Oil & Gas Property | Feb 2024 |
| 556 | IRGENS 41-17 | Williams County, ND | Oil & Gas Property | Feb 2024 |
| 557 | IRGENS REXALL | Williams County, ND | Oil & Gas Property | Feb 2024 |
| 558 | IRIDIUM MDP1 28 21 FEDERAL COM | Eddy County, NM | Oil & Gas Property | Jan 2024 |
| 559 | IRIGOIN | Richland County, MT | Oil & Gas Property | Feb 2024 |
| 560 | IRIGOIN 1-9 | Richland County, MT | Oil & Gas Property | Feb 2024 |
| 561 | IRION | Rusk County, TX | Oil & Gas Property | Jan 2024 |
| 562 | IRION | Avoyelles Parish, LA | Oil & Gas Property | Dec 2023 |
| 563 | IRIS | Comanche County, KS | Oil & Gas Property | Dec 2023 |
| 564 | IRIS GILBERT | Elk County, KS | Oil & Gas Property | Nov 1997 |
| 565 | IRIS STATE | Chaves County, NM | Gas Property | Jan 2018 |
| 566 | IRISH | Hale County, TX | Oil & Gas Property | Apr 2020 |
| 567 | IRISH | San Juan County, NM | Gas Property | Feb 2024 |
| 568 | IRISH CREEK | Moffat County, CO | Oil & Gas Property | Aug 2012 |
| 569 | IRISH HILLS | Eddy County, NM | Oil & Gas Property | Feb 2024 |
| 570 | IRISH HILLS YESO | Eddy County, NM | Oil & Gas Property | Aug 2016 |
| 571 | IRISH PUG | Greene County, PA | Gas Property | Jan 2024 |
| 572 | IRISH USA 41-25TFH | McKenzie County, ND | Oil & Gas Property | Feb 2024 |
| 573 | IRISH WHISKEY FEDERAL | Eddy County, NM | Oil & Gas Property | Jan 2023 |
| 574 | IRISHTOWN | McKean County, PA | Oil & Gas Property | Dec 2023 |
| 575 | IRMA | Moore County, TX | Oil Property | Jan 2024 |
| 576 | IRMA | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 577 | IRMA | Creek County, OK | Oil & Gas Property | Dec 2023 |
| 578 | IRMA | Kern County, CA | Oil & Gas Property | Nov 2023 |
| 579 | IRMA SMITH | Pawnee County, KS | Oil Property | Sep 2023 |
| 580 | IRON BEAR | Roosevelt County, MT | Oil & Gas Property | Jun 2015 |
| 581 | IRON BELLY 1-25 | Carter County, OK | Oil & Gas Property | Jan 2024 |
| 582 | IRON BRIDGE TANNEHILL A SAND UNT | Dickens County, TX | Oil & Gas Property | Jan 2024 |
| 583 | IRON CITY STATE | Reeves County, TX | Oil & Gas Property | Jan 2024 |
| 584 | IRON CURTAIN 20-13-10 | Major County, OK | Oil & Gas Property | Dec 2023 |
| 585 | IRON DUKE | Eddy County, NM | Oil & Gas Property | Feb 2024 |
| 586 | IRON DUKE | Madison County, TX | Oil & Gas Property | Jul 2023 |
| 587 | IRON DUKE (ALLOCATION) | Madison County, TX | Oil & Gas Property | Jul 2023 |
| 588 | IRON EAGLE DEEP UNIT | Reeves County, TX | Oil & Gas Property | Jan 2024 |
| 589 | IRON EAGLE UNIT | Reeves County, TX | Oil & Gas Property | Jan 2024 |
| 590 | IRON FR 26 | Midland County, TX | Oil & Gas Property | Jan 2024 |
| 591 | IRON HORSE | Throckmorton County, TX | Oil & Gas Property | Dec 2023 |
| 592 | IRON HORSE | McKenzie County, ND | Oil & Gas Property | Feb 2024 |
| 593 | IRON HORSE | Fremont County, WY | Oil & Gas Property | Feb 2024 |
| 594 | IRON HORSE | Fremont County, WY | Oil & Gas Property | Feb 2024 |
| 595 | IRON MAN | Washington County, PA | Gas Property | Jan 2024 |
| 596 | IRON MASK 36_25-14N-8W | Canadian County, OK | Oil & Gas Property | Dec 2023 |
| 597 | IRON MIKE | Reeves County, TX | Oil & Gas Property | Dec 2023 |
| 598 | IRON MOUNTAIN | Creek County, OK | Oil & Gas Property | May 2018 |
| 599 | IRON MOUNTAIN | Polk County, TX | Oil & Gas Property | Jan 2024 |
| 600 | IRON POST | Creek County, OK | Gas Property | Aug 2022 |