| 501 | IOWA | Pecos County, TX | Oil & Gas Property | Apr 2021 |
| 502 | IOWA COLLEGE | Anderson County, KS | Oil Property | Mar 2026 |
| 503 | IOWA COLLEGE | Okmulgee County, OK | Oil Property | Feb 2026 |
| 504 | IOWA COLLEGE | Miami County, KS | Oil Property | Nov 2025 |
| 505 | IOWA GULCH 9796-F | Ward County, TX | Oil & Gas Property | Mar 2026 |
| 506 | IOWA HOLDING | Toole County, MT | Oil & Gas Property | Jan 2025 |
| 507 | IOWA REALTY TRUST | Pecos County, TX | Oil & Gas Property | Jul 2024 |
| 508 | IOWA REALTY TRUST | Pecos County, TX | Oil & Gas Property | Apr 2026 |
| 509 | IOWA-JENNINGS | Acadia Parish, LA | Oil & Gas Property | Dec 2024 |
| 510 | IP FARMS ( | Brazoria County, TX | Oil & Gas Property | Jul 2024 |
| 511 | IPB LBN LUC | Bienville Parish, LA | Oil & Gas Property | Dec 2024 |
| 512 | IPB LL | Lasalle Parish, LA | Oil & Gas Property | Dec 2024 |
| 513 | IPB LLS | Lasalle Parish, LA | Oil & Gas Property | Dec 2024 |
| 514 | IPB LLS | Lasalle Parish, LA | Oil & Gas Property | Dec 2024 |
| 515 | IPB STEWART | Lasalle Parish, LA | Oil & Gas Property | Dec 2024 |
| 516 | IPB-NORRIS | Lasalle Parish, LA | Oil & Gas Property | Jan 2025 |
| 517 | IPCO | Grant Parish, LA | Oil Property | Nov 2024 |
| 518 | IPCO | Livingston Parish, LA | Oil & Gas Property | Jul 1985 |
| 519 | IPCO | Webster Parish, LA | Oil & Gas Property | Jan 2025 |
| 520 | IPCO-E JOHNSON (AW) | Panola County, TX | Oil & Gas Property | Apr 2026 |
| 521 | IPCO-MOBIL | Webster Parish, LA | Oil & Gas Property | Jan 2025 |
| 522 | IPRC | Union County, AR | Oil Property | Jun 2024 |
| 523 | IPT 2710 | Alfalfa County, OK | Oil & Gas Property | May 2026 |
| 524 | IPU 1291 13-24 H | Delta County, CO | Gas Property | May 2026 |
| 525 | IRA BOATWRIGHT | Grady County, OK | Oil & Gas Property | Apr 2026 |
| 526 | IRA HEARD | Refugio County, TX | Oil & Gas Property | Oct 2025 |
| 527 | IRA N | Scurry County, TX | Oil & Gas Property | Apr 2026 |
| 528 | IRA N. W | Scurry County, TX | Oil & Gas Property | Apr 2026 |
| 529 | IRA NORTHRUP | Ellis County, OK | Oil & Gas Property | Oct 2014 |
| 530 | IRA PERKINS | Teton County, MT | Oil & Gas Property | Apr 2026 |
| 531 | IRA STRANGE | Caddo Parish, LA | Oil Property | Dec 2024 |
| 532 | IRA SURBER | Glacier County, MT | Gas Property | May 2026 |
| 533 | IRA& LAURA PRITT PRITT SOUTH 2 | Harrison County, WV | Gas Property | Dec 2021 |
| 534 | IRA(1700 ZONE)UNIT | Scurry County, TX | Oil & Gas Property | Oct 2025 |
| 535 | IRACA | Clearfield County, PA | Gas Property | Dec 2025 |
| 536 | IRBY | Union County, AR | Oil & Gas Property | Dec 1993 |
| 537 | IRBY | Grayson County, TX | Oil & Gas Property | Apr 2026 |
| 538 | IRBY | Kay County, OK | Oil & Gas Property | Apr 2026 |
| 539 | IRBY | Okmulgee County, OK | Oil & Gas Property | May 2016 |
| 540 | IRED STATE | Rio Arriba County, NM | Oil & Gas Property | May 2026 |
| 541 | IREDELL | Fresno County, CA | Oil Property | Apr 1990 |
| 542 | IRELAN | Creek County, OK | Oil Property | Feb 2026 |
| 543 | IRELAND | Lewis County, WV | Oil & Gas Property | Dec 2021 |
| 544 | IRELAND | Ritchie County, WV | Oil & Gas Property | Dec 2021 |
| 545 | IRELAND | Ventura County, CA | Oil & Gas Property | May 2026 |
| 546 | IRELAND | Upshur County, WV | Oil & Gas Property | Dec 2021 |
| 547 | IRELAND | Portage County, OH | Oil & Gas Property | Dec 2024 |
| 548 | IRELAND | Woodson County, KS | Oil Property | Mar 2026 |
| 549 | IRELAND UNIT | Denton County, TX | Oil & Gas Property | Apr 2026 |
| 550 | IRELAND, EMMAL | Ritchie County, WV | Oil & Gas Property | Dec 2021 |
| 551 | IRELAND, GUY | Ritchie County, WV | Oil & Gas Property | Dec 2021 |
| 552 | IRELAND, KAREN | Doddridge County, WV | Oil & Gas Property | Dec 2021 |
| 553 | IRELAND, LYNWOOD | Ritchie County, WV | Oil & Gas Property | Dec 2021 |
| 554 | IRENE | Zapata County, TX | Oil & Gas Property | Apr 2026 |
| 555 | IRENE | Kingfisher County, OK | Oil & Gas Property | Sep 2019 |
| 556 | IRENE | Roger Mills County, OK | Oil & Gas Property | Apr 2026 |
| 557 | IRENE | Texas County, OK | Oil & Gas Property | Apr 2026 |
| 558 | IRENE | Brazos County, TX | Oil & Gas Property | Mar 2026 |
| 559 | IRENE | Woods County, OK | Oil & Gas Property | May 2026 |
| 560 | IRENE | Payne County, OK | Oil & Gas Property | Nov 1999 |
| 561 | IRENE | Dewey County, OK | Oil & Gas Property | Apr 2026 |
| 562 | IRENE 12-13H-24 | Mountrail County, ND | Oil & Gas Property | May 2026 |
| 563 | IRENE BASH | Indiana County, PA | Gas Property | Dec 2025 |
| 564 | IRENE BURGESS | Dewey County, OK | Oil & Gas Property | Apr 2026 |
| 565 | IRENE DEEM ETAL | Washington County, OH | Oil & Gas Property | Dec 2010 |
| 566 | IRENE ELL 11-1H | Dunn County, ND | Oil & Gas Property | May 2026 |
| 567 | IRENE HOVLAND 26-35 XE #1H | Williams County, ND | Oil & Gas Property | May 2026 |
| 568 | IRENE KOVALOFF | Dunn County, ND | Oil & Gas Property | May 2026 |
| 569 | IRENE O UNIT 3-18 | Reeves County, TX | Oil & Gas Property | Apr 2026 |
| 570 | IRENE RANCH | Converse County, WY | Oil & Gas Property | May 2026 |
| 571 | IRENE W WICKER | Claiborne Parish, LA | Oil & Gas Property | Dec 2024 |
| 572 | IRETA | Blaine County, OK | Oil & Gas Property | Apr 2026 |
| 573 | IRETON | Dewey County, OK | Oil & Gas Property | Apr 2026 |
| 574 | IRGENS | Williams County, ND | Oil & Gas Property | May 2026 |
| 575 | IRGENS 41-17 | Williams County, ND | Oil & Gas Property | May 2026 |
| 576 | IRGENS REXALL | Williams County, ND | Oil & Gas Property | May 2026 |
| 577 | IRICK | Leavenworth County, KS | Gas Property | Oct 2001 |
| 578 | IRIDIUM MDP1 28 21 FEDERAL COM | Eddy County, NM | Oil & Gas Property | May 2026 |
| 579 | IRIGOIN | Richland County, MT | Oil & Gas Property | May 2026 |
| 580 | IRIGOIN 1-9 | Richland County, MT | Oil & Gas Property | May 2026 |
| 581 | IRIGOIN STATE 1 | Richland County, MT | Oil & Gas Property | May 2026 |
| 582 | IRION | Rusk County, TX | Oil & Gas Property | Apr 2026 |
| 583 | IRION | Avoyelles Parish, LA | Oil & Gas Property | Dec 2024 |
| 584 | IRIS | Comanche County, KS | Oil & Gas Property | Oct 2025 |
| 585 | IRIS GILBERT | Elk County, KS | Oil & Gas Property | Nov 1997 |
| 586 | IRIS STATE | Chaves County, NM | Gas Property | Jan 2018 |
| 587 | IRISH | Hale County, TX | Oil & Gas Property | Apr 2020 |
| 588 | IRISH | San Juan County, NM | Gas Property | May 2026 |
| 589 | IRISH CREEK | Moffat County, CO | Oil & Gas Property | Aug 2012 |
| 590 | IRISH HILLS | Eddy County, NM | Oil & Gas Property | May 2026 |
| 591 | IRISH HILLS YESO | Eddy County, NM | Oil & Gas Property | Aug 2016 |
| 592 | IRISH PUG | Greene County, PA | Gas Property | Mar 2026 |
| 593 | IRISH USA 41-25TFH | McKenzie County, ND | Oil & Gas Property | May 2026 |
| 594 | IRISH WHISKEY FEDERAL | Eddy County, NM | Oil & Gas Property | Apr 2024 |
| 595 | IRISHTOWN | McKean County, PA | Oil & Gas Property | Dec 2025 |
| 596 | IRMA | Moore County, TX | Oil Property | Apr 2026 |
| 597 | IRMA | Upton County, TX | Oil & Gas Property | Apr 2026 |
| 598 | IRMA | Creek County, OK | Oil & Gas Property | Apr 2026 |
| 599 | IRMA | Kern County, CA | Oil & Gas Property | Apr 2026 |
| 600 | IRMA SMITH | Pawnee County, KS | Oil Property | Jul 2025 |