| 501 | INVESTOR ROYALTY | Pittsburg County, OK | Gas Property | May 2025 |
| 502 | INVESTORS | Seminole County, OK | Oil & Gas Property | Feb 2024 |
| 503 | INVESTORS | Dewey County, SD | Oil Property | Feb 1980 |
| 504 | INVESTORS ROYALTY | Terry County, TX | Oil & Gas Property | Jun 2025 |
| 505 | INVESTORS ROYALTY | Pittsburg County, OK | Gas Property | May 2025 |
| 506 | INVICTA 3-65 30-26 | Adams County, CO | Oil & Gas Property | Jun 2025 |
| 507 | INVICTUS 29-48 | Loving County, TX | Oil & Gas Property | Jun 2025 |
| 508 | INVIVTA 3-65 30-26 7H | Adams County, CO | Oil & Gas Property | Jun 2025 |
| 509 | INXS 7 | Wilson County, TX | Oil & Gas Property | Jun 2025 |
| 510 | IO 26 #1H | Roger Mills County, OK | Oil & Gas Property | May 2025 |
| 511 | IOA 1 | Payne County, OK | Oil & Gas Property | May 2025 |
| 512 | IOLA HENDRICKS | Catahoula Parish, LA | Oil & Gas Property | Dec 2024 |
| 513 | IOLA INDUSTRIES | Allen County, KS | Oil Property | Sep 2023 |
| 514 | IONE | Weld County, CO | Oil & Gas Property | Jun 2025 |
| 515 | IONE | Weld County, CO | Oil & Gas Property | Jun 2025 |
| 516 | IONE BARSTAD USA 31-30H | Williams County, ND | Oil & Gas Property | Jul 2025 |
| 517 | IONE LAND&CATTLE | Weld County, CO | Oil & Gas Property | Apr 2024 |
| 518 | IONI CREEK | Palo Pinto County, TX | Oil & Gas Property | Jun 2025 |
| 519 | IORG | Duchesne County, UT | Oil & Gas Property | Jun 2025 |
| 520 | IOU RANCH | Stonewall County, TX | Oil Property | Jun 2025 |
| 521 | IOVANELLA | Forest County, PA | Oil & Gas Property | Dec 2024 |
| 522 | IOWA | Pecos County, TX | Oil & Gas Property | Apr 2021 |
| 523 | IOWA COLLEGE | Anderson County, KS | Oil Property | Apr 2025 |
| 524 | IOWA COLLEGE | Okmulgee County, OK | Oil Property | Dec 2024 |
| 525 | IOWA COLLEGE | Miami County, KS | Oil Property | Nov 2024 |
| 526 | IOWA GULCH 9796-F | Ward County, TX | Oil & Gas Property | Jun 2025 |
| 527 | IOWA HOLDING | Toole County, MT | Oil & Gas Property | Jan 2025 |
| 528 | IOWA REALTY TRUST | Pecos County, TX | Oil & Gas Property | Jul 2024 |
| 529 | IOWA REALTY TRUST | Pecos County, TX | Oil & Gas Property | Jun 2025 |
| 530 | IOWA-JENNINGS | Acadia Parish, LA | Oil & Gas Property | Dec 2024 |
| 531 | IP FARMS ( | Brazoria County, TX | Oil & Gas Property | Jul 2024 |
| 532 | IPB LBN LUC | Bienville Parish, LA | Oil & Gas Property | Dec 2024 |
| 533 | IPB LL | Lasalle Parish, LA | Oil & Gas Property | Dec 2024 |
| 534 | IPB LLS | Lasalle Parish, LA | Oil & Gas Property | Dec 2024 |
| 535 | IPB LLS | Lasalle Parish, LA | Oil & Gas Property | Dec 2024 |
| 536 | IPB STEWART | Lasalle Parish, LA | Oil & Gas Property | Dec 2024 |
| 537 | IPB-NORRIS | Lasalle Parish, LA | Oil & Gas Property | Jan 2025 |
| 538 | IPCO | Grant Parish, LA | Oil Property | Nov 2024 |
| 539 | IPCO | Livingston Parish, LA | Oil & Gas Property | Jul 1985 |
| 540 | IPCO | Webster Parish, LA | Oil & Gas Property | Jan 2025 |
| 541 | IPCO-E JOHNSON (AW) | Panola County, TX | Oil & Gas Property | Jun 2025 |
| 542 | IPCO-MOBIL | Webster Parish, LA | Oil & Gas Property | Jan 2025 |
| 543 | IPRC | Union County, AR | Oil Property | Jun 2024 |
| 544 | IPT 2710 | Alfalfa County, OK | Oil & Gas Property | Jun 2025 |
| 545 | IPU 1291 13-24 H | Delta County, CO | Gas Property | Jul 2025 |
| 546 | IRA HEARD | Refugio County, TX | Oil & Gas Property | Jun 2025 |
| 547 | IRA N | Scurry County, TX | Oil & Gas Property | Jun 2025 |
| 548 | IRA N. W | Scurry County, TX | Oil & Gas Property | Jun 2025 |
| 549 | IRA NORTHRUP | Ellis County, OK | Oil & Gas Property | Oct 2014 |
| 550 | IRA PERKINS | Teton County, MT | Oil & Gas Property | May 2025 |
| 551 | IRA STRANGE | Caddo Parish, LA | Oil Property | Dec 2024 |
| 552 | IRA SURBER | Glacier County, MT | Gas Property | Jun 2025 |
| 553 | IRA& LAURA PRITT PRITT SOUTH 2 | Harrison County, WV | Gas Property | Dec 2021 |
| 554 | IRA(1700 ZONE)UNIT | Scurry County, TX | Oil & Gas Property | Jun 2025 |
| 555 | IRACA | Clearfield County, PA | Gas Property | Dec 2024 |
| 556 | IRBY | Archer County, TX | Oil Property | Sep 2022 |
| 557 | IRBY | Union County, AR | Oil & Gas Property | Dec 1993 |
| 558 | IRBY | Grayson County, TX | Oil & Gas Property | Jun 2025 |
| 559 | IRBY | Kay County, OK | Oil & Gas Property | May 2025 |
| 560 | IRBY | Okmulgee County, OK | Oil & Gas Property | May 2016 |
| 561 | IRED STATE | Rio Arriba County, NM | Oil & Gas Property | Jul 2025 |
| 562 | IREDELL | Fresno County, CA | Oil Property | Apr 1990 |
| 563 | IRELAN | Creek County, OK | Oil Property | May 2025 |
| 564 | IRELAND | Lewis County, WV | Oil & Gas Property | Dec 2021 |
| 565 | IRELAND | Ritchie County, WV | Oil & Gas Property | Dec 2021 |
| 566 | IRELAND | Ventura County, CA | Oil & Gas Property | Jul 2025 |
| 567 | IRELAND | Upshur County, WV | Oil & Gas Property | Dec 2021 |
| 568 | IRELAND | Portage County, OH | Oil & Gas Property | Dec 2023 |
| 569 | IRELAND | Woodson County, KS | Oil Property | Dec 1985 |
| 570 | IRELAND UNIT | Denton County, TX | Oil & Gas Property | Jun 2025 |
| 571 | IRELAND, EMMAL | Ritchie County, WV | Oil & Gas Property | Dec 2021 |
| 572 | IRELAND, GUY | Ritchie County, WV | Oil & Gas Property | Dec 2021 |
| 573 | IRELAND, KAREN | Doddridge County, WV | Oil & Gas Property | Dec 2021 |
| 574 | IRELAND, LYNWOOD | Ritchie County, WV | Oil & Gas Property | Dec 2021 |
| 575 | IRENE | Zapata County, TX | Oil & Gas Property | Jun 2025 |
| 576 | IRENE | Kingfisher County, OK | Oil & Gas Property | Sep 2019 |
| 577 | IRENE | Roger Mills County, OK | Oil & Gas Property | May 2025 |
| 578 | IRENE | Texas County, OK | Oil & Gas Property | May 2025 |
| 579 | IRENE | Brazos County, TX | Oil & Gas Property | Jun 2025 |
| 580 | IRENE | Woods County, OK | Oil & Gas Property | Jun 2025 |
| 581 | IRENE | Payne County, OK | Oil & Gas Property | Nov 1999 |
| 582 | IRENE | Dewey County, OK | Oil & Gas Property | May 2025 |
| 583 | IRENE | Love County, OK | Oil & Gas Property | May 2025 |
| 584 | IRENE 12-13H-24 | Mountrail County, ND | Oil & Gas Property | Jul 2025 |
| 585 | IRENE BASH | Indiana County, PA | Gas Property | Dec 2024 |
| 586 | IRENE BURGESS | Dewey County, OK | Oil & Gas Property | May 2025 |
| 587 | IRENE DEEM ETAL | Washington County, OH | Oil & Gas Property | Dec 2010 |
| 588 | IRENE DIXON | Hemphill County, TX | Oil & Gas Property | Sep 2024 |
| 589 | IRENE ELL 11-1H | Dunn County, ND | Oil & Gas Property | Jul 2025 |
| 590 | IRENE G 30-6 | Weld County, CO | Oil & Gas Property | Jun 2025 |
| 591 | IRENE HOVLAND 26-35 XE #1H | Williams County, ND | Oil & Gas Property | Jul 2025 |
| 592 | IRENE KOVALOFF | Dunn County, ND | Oil & Gas Property | Jul 2025 |
| 593 | IRENE O UNIT 3-18 | Reeves County, TX | Oil & Gas Property | Jun 2025 |
| 594 | IRENE RANCH | Converse County, WY | Oil & Gas Property | Jul 2025 |
| 595 | IRENE W WICKER | Claiborne Parish, LA | Oil & Gas Property | Dec 2024 |
| 596 | IRETA | Blaine County, OK | Oil & Gas Property | May 2025 |
| 597 | IRETON | Dewey County, OK | Oil & Gas Property | May 2025 |
| 598 | IRGENS | Williams County, ND | Oil & Gas Property | Jul 2025 |
| 599 | IRGENS 41-17 | Williams County, ND | Oil & Gas Property | Jul 2025 |
| 600 | IRGENS REXALL | Williams County, ND | Oil & Gas Property | Jul 2025 |