| 93401 | OPPENHEIMER 188 | Reeves County, TX | Oil & Gas Property | May 2026 |
| 93402 | OPPENHEIMER, JESSIE D | Frio County, TX | Oil & Gas Property | Apr 2022 |
| 93403 | OPPY | Hodgeman County, KS | Oil Property | May 1994 |
| 93404 | OPSAL 158-99-26A-35-1H | Williams County, ND | Oil & Gas Property | May 2026 |
| 93405 | OPSETH | Burke County, ND | Oil & Gas Property | May 2026 |
| 93406 | OPTIMO | Marshall County, OK | Oil & Gas Property | Apr 2026 |
| 93407 | OPTIMUS PRIME | Henderson County, TX | Oil & Gas Property | Dec 2024 |
| 93408 | OPUS | Hill County, TX | Oil & Gas Property | May 2026 |
| 93409 | OPUS ONE 1605 | Kingfisher County, OK | Oil & Gas Property | Apr 2026 |
| 93410 | OQUIN | Garfield County, OK | Oil & Gas Property | Apr 2026 |
| 93411 | OQUINN C. F | Rusk County, TX | Oil & Gas Property | Apr 2026 |
| 93412 | ORA 00 | Rio Arriba County, NM | Oil & Gas Property | Jun 2026 |
| 93413 | ORA BREEDLOVE | Sequoyah County, OK | Gas Property | Apr 2026 |
| 93414 | ORA JACKSON | Lea County, NM | Oil & Gas Property | Jan 1996 |
| 93415 | ORA JOHNSON | Knox County, OH | Oil & Gas Property | Dec 2025 |
| 93416 | ORA NELL UNIT | Fayette County, TX | Oil & Gas Property | Apr 2026 |
| 93417 | ORA V. MARTIN | Kearny County, KS | Gas Property | Apr 2026 |
| 93418 | ORA YODER | Mayes County, OK | Oil Property | Mar 2026 |
| 93419 | ORACLE 21 FEDERAL | Eddy County, NM | Oil & Gas Property | May 2026 |
| 93420 | ORAN 4 | Palo Pinto County, TX | Oil & Gas Property | May 2026 |
| 93421 | ORAND | Freestone County, TX | Oil & Gas Property | May 2026 |
| 93422 | ORAND GAS UNIT NO. 1 | Freestone County, TX | Oil & Gas Property | May 2026 |
| 93423 | ORANGE | Orange County, CA | Oil & Gas Property | Jun 2026 |
| 93424 | ORANGE | Finney County, KS | Oil & Gas Property | Jul 2016 |
| 93425 | ORANGE COAL | Noble County, OH | Oil & Gas Property | Dec 2019 |
| 93426 | ORANGE COAL | Noble County, OH | Oil & Gas Property | Dec 2025 |
| 93427 | ORANGE CRUSH UNIT 9 | Reeves County, TX | Oil & Gas Property | May 2026 |
| 93428 | ORANGE J | Monroe County, OH | Oil Property | Dec 2025 |
| 93429 | ORANGE RAIDER BPV STATE | Lea County, NM | Oil & Gas Property | May 2026 |
| 93430 | ORANGE SHERBET 17-10-6 | Grady County, OK | Oil & Gas Property | May 2026 |
| 93431 | ORANGE UNIT | Atascosa County, TX | Oil & Gas Property | May 2026 |
| 93432 | ORANGE-GRAZIDE | Orange County, CA | Oil & Gas Property | Dec 1999 |
| 93433 | ORANGE-ROWLAND | Orange County, CA | Oil & Gas Property | Jul 2002 |
| 93434 | ORANGEVILLE | Emery County, UT | Gas Property | Jul 2024 |
| 93435 | ORANSKY M.B. ET AL | Freestone County, TX | Oil & Gas Property | Aug 2024 |
| 93436 | ORAVEC | Geauga County, OH | Oil & Gas Property | Dec 2024 |
| 93437 | ORBIE KIKER | Seminole County, OK | Oil Property | Apr 2026 |
| 93438 | ORBISON | Pittsburg County, OK | Oil & Gas Property | May 2026 |
| 93439 | ORBISON BO | Lea County, NM | Oil & Gas Property | May 2026 |
| 93440 | ORBIT | Seminole County, OK | Oil & Gas Property | May 2026 |
| 93441 | ORBIT | Johnson County, WY | Oil & Gas Property | Jun 2026 |
| 93442 | ORBIT 24-13-12 | Williams County, ND | Oil & Gas Property | May 2026 |
| 93443 | ORBIT 51-7-21-16 | Reeves County, TX | Oil & Gas Property | May 2026 |
| 93444 | ORBWEAVER 149-92-32C-29H | Dunn County, ND | Oil & Gas Property | May 2026 |
| 93445 | ORC 21179 | Belmont County, OH | Gas Property | Mar 2026 |
| 93446 | ORC 211792 2A | Belmont County, OH | Gas Property | Mar 2026 |
| 93447 | ORCA | Brazos County, TX | Oil & Gas Property | May 2026 |
| 93448 | ORCA FEDERAL | Mountrail County, ND | Oil & Gas Property | May 2026 |
| 93449 | ORCA UNIT NO | Brazos County, TX | Oil & Gas Property | May 2026 |
| 93450 | ORCAS STATE 5601 13-16 | Williams County, ND | Oil & Gas Property | May 2026 |
| 93451 | ORCHARD | Park County, WY | Oil & Gas Property | Jun 2026 |
| 93452 | ORCHARD | Kern County, CA | Oil & Gas Property | May 2026 |
| 93453 | ORCHARD | Mesa County, CO | Oil & Gas Property | May 2026 |
| 93454 | ORCHARD | Hot Springs County, WY | Oil & Gas Property | Jun 2026 |
| 93455 | ORCHARD 40 | Glasscock County, TX | Oil & Gas Property | May 2026 |
| 93456 | ORCHARD CS | Campbell County, WY | Gas Property | Dec 2015 |
| 93457 | ORCHARD L. B | Archer County, TX | Oil & Gas Property | Jan 2025 |
| 93458 | ORCHARD SB | Kern County, CA | Oil & Gas Property | Jun 2026 |
| 93459 | ORCHARD UNIT | Mesa County, CO | Oil & Gas Property | May 2026 |
| 93460 | ORCHID 1-13 | Campbell County, WY | Oil Property | Jun 2026 |
| 93461 | ORCUTT | Santa Barbara County, CA | Oil & Gas Property | Jul 2004 |
| 93462 | ORCUTT | Creek County, OK | Oil Property | Apr 2026 |
| 93463 | ORCUTT | Ventura County, CA | Oil & Gas Property | Jun 2026 |
| 93464 | ORCUTT | Chautauqua County, NY | Gas Property | Dec 2025 |
| 93465 | ORD NAN D | Young County, TX | Oil & Gas Property | May 2026 |
| 93466 | ORD, MAUDIE | Monongalia County, WV | Gas Property | Dec 2013 |
| 93467 | ORDEAN FEDERAL 5300 24-25T | Williams County, ND | Oil & Gas Property | May 2026 |
| 93468 | ORDUNO | Los Angeles County, CA | Oil & Gas Property | Jun 2026 |
| 93469 | ORDWAY | Rooks County, KS | Oil Property | Apr 2026 |
| 93470 | ORDWAY 1-26H | McKenzie County, ND | Oil & Gas Property | May 2026 |
| 93471 | ORE IDA 14 FEDERAL | Eddy County, NM | Oil & Gas Property | Jun 2026 |
| 93472 | OREAR, DANNY E | Doddridge County, WV | Oil & Gas Property | Dec 2021 |
| 93473 | OREDIGGER | Gonzales County, TX | Oil & Gas Property | May 2026 |
| 93474 | OREDIGGER | Howard County, TX | Oil & Gas Property | May 2026 |
| 93475 | OREILLY WA | Ector County, TX | Oil & Gas Property | May 2026 |
| 93476 | OREL HERSHISER 32-41 | Midland County, TX | Oil & Gas Property | May 2026 |
| 93477 | OREL HERSHISER 41-32 | Midland County, TX | Oil & Gas Property | May 2026 |
| 93478 | ORELIA RANCH | Frio County, TX | Oil & Gas Property | May 2026 |
| 93479 | ORELLA | Santa Barbara County, CA | Oil & Gas Property | Jan 1989 |
| 93480 | ORELLANA | Irion County, TX | Oil & Gas Property | May 2026 |
| 93481 | OREM | Moore County, TX | Gas Property | May 2026 |
| 93482 | OREN | Beckham County, OK | Oil & Gas Property | Apr 2026 |
| 93483 | OREN USA 31-6TFH | Mountrail County, ND | Oil & Gas Property | May 2026 |
| 93484 | ORENCHUK RUSSELL 11890 | Washington County, PA | Gas Property | May 2026 |
| 93485 | ORENDORFF-FRAZIER | Muskogee County, OK | Oil & Gas Property | Apr 2007 |
| 93486 | OREO | McIntosh County, OK | Gas Property | Dec 2024 |
| 93487 | OREO FEDERAL 5300 24-25T | Williams County, ND | Oil & Gas Property | May 2026 |
| 93488 | ORF 1 | Caddo County, OK | Oil & Gas Property | Apr 2026 |
| 93489 | ORGAIN | Liberty County, TX | Oil & Gas Property | May 2026 |
| 93490 | ORGAIN | Roger Mills County, OK | Oil & Gas Property | Apr 2026 |
| 93491 | ORGAIN HEIRS | Bastrop County, TX | Oil & Gas Property | Apr 2026 |
| 93492 | ORGANIC | Midland County, TX | Oil & Gas Property | May 2026 |
| 93493 | ORIE LOVE | Sumner County, KS | Oil Property | Sep 2024 |
| 93494 | ORIENT | Kern County, CA | Oil & Gas Property | May 2026 |
| 93495 | ORIENT 1-12 | Howard County, TX | Oil & Gas Property | May 2026 |
| 93496 | ORIGAMI | Kern County, CA | Oil & Gas Property | Jun 2026 |
| 93497 | ORIGAMI A-O31 6S-10-0 | Weld County, CO | Oil & Gas Property | May 2026 |
| 93498 | ORIN | Stephens County, OK | Oil & Gas Property | Apr 2026 |
| 93499 | ORIN FORTENBERRY GAS UNIT | Wise County, TX | Oil & Gas Property | May 2026 |
| 93500 | ORIN LEE NEAL | Jefferson County, PA | Gas Property | Dec 2025 |