| 1401 | ORLANDI, JOSEPH TRUSTEE | Nicholas County, WV | Oil & Gas Property | Dec 2021 |
| 1402 | ORLANDO HARMAN | Armstrong County, PA | Gas Property | Dec 2024 |
| 1403 | ORLEANS LEVEE | Plaquemines Parish, LA | Oil & Gas Property | Jul 2011 |
| 1404 | ORLOFF | Kern County, CA | Oil & Gas Property | Dec 2024 |
| 1405 | ORLOFF | Kern County, CA | Oil Property | Jul 1993 |
| 1406 | ORLOSKY | Mercer County, PA | Gas Property | Dec 2024 |
| 1407 | ORLYNNE 2-3H | Divide County, ND | Oil & Gas Property | Feb 2025 |
| 1408 | ORME CHARLSIE | Palo Pinto County, TX | Oil & Gas Property | Jan 2025 |
| 1409 | ORMET | Monroe County, OH | Oil & Gas Property | Dec 2024 |
| 1410 | ORMISTON | Seward County, KS | Oil & Gas Property | Nov 2024 |
| 1411 | ORMISTON | Burke County, ND | Oil & Gas Property | Feb 2025 |
| 1412 | ORMOND PL | Adams County, MS | Oil & Gas Property | Oct 1998 |
| 1413 | ORMS | Gregg County, TX | Oil & Gas Property | Jan 2025 |
| 1414 | ORMSBY | Johnson County, TX | Oil & Gas Property | Jan 2025 |
| 1415 | ORMSBY DEVONIAN | McKean County, PA | Gas Property | Dec 1993 |
| 1416 | ORO NEGRO UNIT | Dewitt County, TX | Oil & Gas Property | Jan 2025 |
| 1417 | OROSZ 1 | Kalamazoo County, MI | Oil & Gas Property | Oct 2024 |
| 1418 | OROURKE | Ness County, KS | Oil Property | May 2006 |
| 1419 | OROURKE 05 046 0 | Bradford County, PA | Gas Property | Jan 2025 |
| 1420 | ORPHA DEAN | Roger Mills County, OK | Oil & Gas Property | Feb 2025 |
| 1421 | ORPHEUM | Reeves County, TX | Oil & Gas Property | Jan 2025 |
| 1422 | ORPIN | Franklin County, KS | Oil Property | Dec 2024 |
| 1423 | ORR (JV) | Garden County, NE | Gas Property | Oct 2022 |
| 1424 | ORR 1 | Fayette County, PA | Oil & Gas Property | Dec 2024 |
| 1425 | ORR 1 | Lincoln County, OK | Oil & Gas Property | Dec 2024 |
| 1426 | ORR 1 | Kearny County, KS | Gas Property | Dec 2024 |
| 1427 | ORR 1 | Creek County, OK | Oil & Gas Property | Apr 2023 |
| 1428 | ORR 2 | Fayette County, PA | Oil & Gas Property | Dec 2024 |
| 1429 | ORR 3 | Fayette County, PA | Oil & Gas Property | Dec 2024 |
| 1430 | ORR A | Karnes County, TX | Oil & Gas Property | Jan 2025 |
| 1431 | ORR B | Wilson County, KS | Gas Property | Feb 2019 |
| 1432 | ORR B | Barber County, KS | Oil & Gas Property | Dec 2024 |
| 1433 | ORR J. B | Upshur County, TX | Oil & Gas Property | Dec 2021 |
| 1434 | ORR RANCH UNIT | Karnes County, TX | Oil & Gas Property | Sep 2024 |
| 1435 | ORR ROBERT | Milam County, TX | Oil & Gas Property | Dec 2024 |
| 1436 | ORR STATE | Weld County, CO | Oil & Gas Property | Nov 2024 |
| 1437 | ORR UNIT | Marion County, TX | Oil & Gas Property | Jan 2025 |
| 1438 | ORR UNIT | Latimer County, OK | Oil & Gas Property | Jan 2025 |
| 1439 | ORR UNIT | Karnes County, TX | Oil & Gas Property | Jan 2025 |
| 1440 | ORR UNIT | Ellis County, TX | Gas Property | Dec 2024 |
| 1441 | ORR WILLIAM | Wise County, TX | Oil & Gas Property | Jan 2025 |
| 1442 | ORR WM | Wise County, TX | Oil & Gas Property | Jan 2025 |
| 1443 | ORR WM. -A- UNIT 2C | Wise County, TX | Gas Property | Jan 2025 |
| 1444 | ORR, E.L | Jones County, TX | Oil & Gas Property | Apr 2013 |
| 1445 | ORR-BURKS GU | Rusk County, TX | Oil & Gas Property | Jul 2024 |
| 1446 | ORR-TIPPS | Rusk County, TX | Oil & Gas Property | Jan 2025 |
| 1447 | ORRA DEAN UNIT | Kearny County, KS | Gas Property | Dec 2024 |
| 1448 | ORRADRE | Monterey County, CA | Oil & Gas Property | Dec 2024 |
| 1449 | ORRADRE | Monterey County, CA | Oil & Gas Property | Dec 2024 |
| 1450 | ORRELL 1-1 | Caddo County, OK | Gas Property | Jan 2025 |
| 1451 | ORRTANNA 20 FEDERAL | Lea County, NM | Oil & Gas Property | Jan 2025 |
| 1452 | ORSBORN | Taylor County, TX | Oil & Gas Property | Jul 2023 |
| 1453 | ORSBORN | King County, TX | Oil & Gas Property | Oct 2024 |
| 1454 | ORSBURN | Henderson County, KY | Oil Property | Dec 2016 |
| 1455 | ORSBURN | Seminole County, OK | Oil & Gas Property | Jan 2025 |
| 1456 | ORSON | Martin County, TX | Oil & Gas Property | Jan 2025 |
| 1457 | ORSON | Andrews County, TX | Oil & Gas Property | Jan 2025 |
| 1458 | ORSON-BILLY 139 | Martin County, TX | Oil & Gas Property | Jan 2025 |
| 1459 | ORTEGA | Reagan County, TX | Oil & Gas Property | Jan 2025 |
| 1460 | ORTH | Ellis County, KS | Oil Property | Dec 2024 |
| 1461 | ORTH | Haskell County, KS | Gas Property | Dec 2024 |
| 1462 | ORTH | Rice County, KS | Oil Property | Dec 2024 |
| 1463 | ORTH | Haskell County, KS | Gas Property | Dec 2024 |
| 1464 | ORTH | Ellis County, KS | Oil Property | Dec 2024 |
| 1465 | ORTH | Rice County, KS | Oil Property | Sep 2022 |
| 1466 | ORTH B | Warren County, PA | Oil & Gas Property | Dec 2024 |
| 1467 | ORTH-GILLESPIE | Woodson County, KS | Oil Property | Nov 2024 |
| 1468 | ORTH-HADDON 1-5 | Rice County, KS | Oil Property | Nov 2024 |
| 1469 | ORTHA JONES 41 | Ochiltree County, TX | Oil & Gas Property | Jan 2025 |
| 1470 | ORTHODOX | Crawford County, PA | Oil & Gas Property | Dec 2024 |
| 1471 | ORTHODOX EDUCATIONAL SOCIETY OES | Taylor County, WV | Gas Property | Dec 2021 |
| 1472 | ORTHRUS UNIT | Borden County, TX | Oil & Gas Property | Jan 2025 |
| 1473 | ORTIZ | Wagoner County, OK | Oil & Gas Property | Feb 2008 |
| 1474 | ORTIZ RANCH | Webb County, TX | Oil & Gas Property | Jan 2025 |
| 1475 | ORTMAN USA 34-31TFH | Mountrail County, ND | Oil & Gas Property | Feb 2025 |
| 1476 | ORTMANN | Wilson County, TX | Oil & Gas Property | Jan 2025 |
| 1477 | ORTNER | Phillips County, CO | Gas Property | Sep 2023 |
| 1478 | ORTON | Washington County, PA | Oil & Gas Property | Apr 2023 |
| 1479 | ORTON | Clay County, TX | Oil & Gas Property | Jan 2025 |
| 1480 | ORTON | Erie County, PA | Gas Property | Dec 1986 |
| 1481 | ORTON A | Archer County, TX | Oil & Gas Property | Jan 2025 |
| 1482 | ORTON UNIT | Karnes County, TX | Oil & Gas Property | Jan 2025 |
| 1483 | ORTS,H.P | Gonzales County, TX | Oil & Gas Property | Jan 2025 |
| 1484 | ORVAL 1 | Pittsburg County, OK | Gas Property | Jan 2025 |
| 1485 | ORVAL 44-23H | Dunn County, ND | Oil & Gas Property | Feb 2025 |
| 1486 | ORVAL BDQ STATE COM | Eddy County, NM | Oil & Gas Property | Mar 2022 |
| 1487 | ORVIE 24-20H | Williams County, ND | Oil & Gas Property | Feb 2025 |
| 1488 | ORVILLE | Kingfisher County, OK | Oil & Gas Property | Jan 2025 |
| 1489 | ORVILLE | Major County, OK | Oil & Gas Property | Jan 2025 |
| 1490 | ORVILLE | Indiana County, PA | Gas Property | Dec 2024 |
| 1491 | ORVILLE | Coal County, OK | Oil & Gas Property | Jan 2025 |
| 1492 | ORVILLE 29-32-162-98H 2XM | Divide County, ND | Oil & Gas Property | Feb 2025 |
| 1493 | ORVILLE 4-9 | Williams County, ND | Oil & Gas Property | Feb 2025 |
| 1494 | ORVILLE J MORAN | Licking County, OH | Oil Property | Dec 2023 |
| 1495 | ORVILLE JONES | Licking County, OH | Oil & Gas Property | Dec 2017 |
| 1496 | ORVILLE M WATSON | Indiana County, PA | Gas Property | Dec 2024 |
| 1497 | ORVILLE OSBORN | Muskingum County, OH | Oil & Gas Property | Dec 2022 |
| 1498 | ORVILLE W. PRESCOTT | Clearfield County, PA | Gas Property | Dec 2008 |
| 1499 | ORVIN 31-13TFH | Mountrail County, ND | Oil & Gas Property | Feb 2025 |
| 1500 | ORVIS | Furnas County, NE | Oil Property | Dec 2023 |