| 501 | IOLA INDUSTRIES | Allen County, KS | Oil Property | Sep 2023 |
| 502 | IONE | Weld County, CO | Oil & Gas Property | May 2026 |
| 503 | IONE | Weld County, CO | Oil & Gas Property | May 2026 |
| 504 | IONE 24X-22 | Richland County, MT | Oil & Gas Property | Jun 2026 |
| 505 | IONE BARSTAD USA 31-30H | Williams County, ND | Oil & Gas Property | Jun 2026 |
| 506 | IONE LAND&CATTLE | Weld County, CO | Oil & Gas Property | May 2026 |
| 507 | IONI CREEK | Palo Pinto County, TX | Oil & Gas Property | Jun 2026 |
| 508 | IORG | Duchesne County, UT | Oil & Gas Property | Jun 2026 |
| 509 | IOU RANCH | Stonewall County, TX | Oil Property | Jun 2026 |
| 510 | IOVANELLA | Forest County, PA | Oil & Gas Property | Dec 2025 |
| 511 | IOWA | Pecos County, TX | Oil & Gas Property | Apr 2021 |
| 512 | IOWA COLLEGE | Anderson County, KS | Oil Property | May 2026 |
| 513 | IOWA COLLEGE | Okmulgee County, OK | Oil Property | Feb 2026 |
| 514 | IOWA COLLEGE | Miami County, KS | Oil Property | Apr 2026 |
| 515 | IOWA GULCH 9796-F | Ward County, TX | Oil & Gas Property | Jun 2026 |
| 516 | IOWA HOLDING | Toole County, MT | Oil & Gas Property | Jan 2025 |
| 517 | IOWA JENNINGS | Acadia Parish, LA | Oil & Gas Property | Dec 2024 |
| 518 | IOWA REALTY TRUST | Pecos County, TX | Oil & Gas Property | Jul 2024 |
| 519 | IOWA REALTY TRUST | Pecos County, TX | Oil & Gas Property | Jun 2026 |
| 520 | IP FARMS ( | Brazoria County, TX | Oil & Gas Property | Jul 2024 |
| 521 | IPB LBN LUC | Bienville Parish, LA | Oil & Gas Property | Dec 2024 |
| 522 | IPB LL | Lasalle Parish, LA | Oil & Gas Property | Dec 2024 |
| 523 | IPB LLS | Lasalle Parish, LA | Oil & Gas Property | Dec 2024 |
| 524 | IPB LLS | Lasalle Parish, LA | Oil & Gas Property | Dec 2024 |
| 525 | IPB STEWART | Lasalle Parish, LA | Oil & Gas Property | Dec 2024 |
| 526 | IPB-NORRIS | Lasalle Parish, LA | Oil & Gas Property | Jan 2025 |
| 527 | IPCO | Grant Parish, LA | Oil Property | Nov 2024 |
| 528 | IPCO | Livingston Parish, LA | Oil & Gas Property | Jul 1985 |
| 529 | IPCO | Webster Parish, LA | Oil & Gas Property | Jan 2025 |
| 530 | IPCO-E JOHNSON (AW) | Panola County, TX | Oil & Gas Property | Jun 2026 |
| 531 | IPCO-MOBIL | Webster Parish, LA | Oil & Gas Property | Jan 2025 |
| 532 | IPRC | Union County, AR | Oil Property | Jun 2024 |
| 533 | IPT 2710 | Alfalfa County, OK | Oil & Gas Property | Jul 2026 |
| 534 | IPU 1291 13-24 H | Delta County, CO | Gas Property | May 2026 |
| 535 | IRA #1 | Dewey County, OK | Oil & Gas Property | Jul 2026 |
| 536 | IRA HEARD | Refugio County, TX | Oil & Gas Property | Aug 2025 |
| 537 | IRA N | Scurry County, TX | Oil & Gas Property | Jun 2026 |
| 538 | IRA N. W | Scurry County, TX | Oil & Gas Property | Jun 2026 |
| 539 | IRA NORTHRUP | Ellis County, OK | Oil & Gas Property | Oct 2014 |
| 540 | IRA PERKINS | Teton County, MT | Oil & Gas Property | Jun 2026 |
| 541 | IRA STRANGE | Caddo Parish, LA | Oil Property | Dec 2024 |
| 542 | IRA SURBER | Glacier County, MT | Gas Property | Jun 2026 |
| 543 | IRA& LAURA PRITT PRITT SOUTH 2 | Harrison County, WV | Gas Property | Dec 2021 |
| 544 | IRA(1700 ZONE)UNIT | Scurry County, TX | Oil & Gas Property | Jun 2026 |
| 545 | IRACA | Clearfield County, PA | Gas Property | Dec 2025 |
| 546 | IRBY | Union County, AR | Oil & Gas Property | Dec 1993 |
| 547 | IRBY | Grayson County, TX | Oil & Gas Property | Jun 2026 |
| 548 | IRBY | Kay County, OK | Oil & Gas Property | Jun 2026 |
| 549 | IRBY | Okmulgee County, OK | Oil & Gas Property | May 2016 |
| 550 | IRED STATE | Rio Arriba County, NM | Oil & Gas Property | Jul 2026 |
| 551 | IREDELL | Fresno County, CA | Oil Property | Apr 1990 |
| 552 | IRELAN | Creek County, OK | Oil Property | Jun 2026 |
| 553 | IRELAND | Lewis County, WV | Oil & Gas Property | Dec 2021 |
| 554 | IRELAND | Ritchie County, WV | Oil & Gas Property | Dec 2021 |
| 555 | IRELAND | Ventura County, CA | Oil & Gas Property | Jul 2026 |
| 556 | IRELAND | Upshur County, WV | Oil & Gas Property | Dec 2021 |
| 557 | IRELAND | Portage County, OH | Oil & Gas Property | Dec 2025 |
| 558 | IRELAND | Woodson County, KS | Oil Property | Mar 2026 |
| 559 | IRELAND UNIT | Denton County, TX | Oil & Gas Property | Jun 2026 |
| 560 | IRELAND, EMMAL | Ritchie County, WV | Oil & Gas Property | Dec 2021 |
| 561 | IRELAND, GUY | Ritchie County, WV | Oil & Gas Property | Dec 2021 |
| 562 | IRELAND, KAREN | Doddridge County, WV | Oil & Gas Property | Dec 2021 |
| 563 | IRELAND, LYNWOOD | Ritchie County, WV | Oil & Gas Property | Dec 2021 |
| 564 | IRENE | Zapata County, TX | Oil & Gas Property | Jun 2026 |
| 565 | IRENE | Pittsburg County, OK | Gas Property | Jun 2026 |
| 566 | IRENE | Kingfisher County, OK | Oil & Gas Property | Sep 2019 |
| 567 | IRENE | Roger Mills County, OK | Oil & Gas Property | Jun 2026 |
| 568 | IRENE | Texas County, OK | Oil & Gas Property | Jun 2026 |
| 569 | IRENE | Brazos County, TX | Oil & Gas Property | May 2026 |
| 570 | IRENE | Woods County, OK | Oil & Gas Property | Jul 2026 |
| 571 | IRENE | Payne County, OK | Oil & Gas Property | Nov 1999 |
| 572 | IRENE | Dewey County, OK | Oil & Gas Property | Jun 2026 |
| 573 | IRENE | Love County, OK | Oil & Gas Property | Jun 2026 |
| 574 | IRENE 12-13H-24 | Mountrail County, ND | Oil & Gas Property | Jun 2026 |
| 575 | IRENE BASH | Indiana County, PA | Gas Property | Dec 2025 |
| 576 | IRENE BURGESS | Dewey County, OK | Oil & Gas Property | Jul 2026 |
| 577 | IRENE DEEM ETAL | Washington County, OH | Oil & Gas Property | Dec 2010 |
| 578 | IRENE ELL 11-1H | Dunn County, ND | Oil & Gas Property | Jun 2026 |
| 579 | IRENE HOVLAND 26-35 XE #1H | Williams County, ND | Oil & Gas Property | Jun 2026 |
| 580 | IRENE KOVALOFF | Dunn County, ND | Oil & Gas Property | Jun 2026 |
| 581 | IRENE O UNIT 3-18 | Reeves County, TX | Oil & Gas Property | Jun 2026 |
| 582 | IRENE RANCH | Converse County, WY | Oil & Gas Property | Jul 2026 |
| 583 | IRENE W WICKER | Claiborne Parish, LA | Oil & Gas Property | Dec 2024 |
| 584 | IRETA | Blaine County, OK | Oil & Gas Property | Jun 2026 |
| 585 | IRETON | Dewey County, OK | Oil & Gas Property | Jun 2026 |
| 586 | IRETON "9" | Martin County, TX | Oil & Gas Property | Jun 2026 |
| 587 | IRGENS | Williams County, ND | Oil & Gas Property | Jun 2026 |
| 588 | IRGENS 41-17 | Williams County, ND | Oil & Gas Property | Jun 2026 |
| 589 | IRGENS REXALL | Williams County, ND | Oil & Gas Property | Jun 2026 |
| 590 | IRICK | Leavenworth County, KS | Gas Property | Oct 2001 |
| 591 | IRIDIUM MDP1 28 21 FEDERAL COM | Eddy County, NM | Oil & Gas Property | Jun 2026 |
| 592 | IRIGOIN | Richland County, MT | Oil & Gas Property | Jun 2026 |
| 593 | IRIGOIN 1-9 | Richland County, MT | Oil & Gas Property | Jun 2026 |
| 594 | IRIGOIN STATE 1 | Richland County, MT | Oil & Gas Property | Jun 2026 |
| 595 | IRION | Rusk County, TX | Oil & Gas Property | Jun 2026 |
| 596 | IRION | Avoyelles Parish, LA | Oil & Gas Property | Dec 2024 |
| 597 | IRIS | Comanche County, KS | Oil & Gas Property | Oct 2025 |
| 598 | IRIS GILBERT | Elk County, KS | Oil & Gas Property | Nov 1997 |
| 599 | IRIS STATE | Chaves County, NM | Gas Property | Jan 2018 |
| 600 | IRISH | Hale County, TX | Oil & Gas Property | Apr 2020 |