| 1501 | OLIVE-LESUEUR 27-4H | Richland County, MT | Oil & Gas Property | Jan 2025 |
| 1502 | OLOUGHLIN | Toole County, MT | Gas Property | May 2024 |
| 1503 | OLSON | Chouteau County, MT | Gas Property | Jan 2025 |
| 1504 | OLSON | Hill County, MT | Gas Property | Jan 2025 |
| 1505 | OLSON | Sheridan County, MT | Oil Property | Dec 2012 |
| 1506 | OLSON | Blaine County, MT | Gas Property | Jan 2025 |
| 1507 | OLSON | Richland County, MT | Oil & Gas Property | Jan 2025 |
| 1508 | OLSON | Roosevelt County, MT | Oil & Gas Property | Jan 2025 |
| 1509 | OLSON BOTTOM | Richland County, MT | Oil & Gas Property | Jan 2025 |
| 1510 | OLSON-JENNY | Toole County, MT | Gas Property | Nov 2024 |
| 1511 | OLSON-JENSEN | Petroleum County, MT | Oil Property | Sep 1993 |
| 1512 | ONEIL | Blaine County, MT | Gas Property | Jan 2025 |
| 1513 | ONEILL | Rosebud County, MT | Oil Property | Dec 2024 |
| 1514 | ONSTAD | Sheridan County, MT | Oil & Gas Property | Jan 2025 |
| 1515 | OSBORN 1-34H | Richland County, MT | Oil & Gas Property | Jan 2025 |
| 1516 | OSCAR | Richland County, MT | Oil & Gas Property | Jan 2025 |
| 1517 | OSLER (1 | Liberty County, MT | Gas Property | Jan 2025 |
| 1518 | OSTBY | Sheridan County, MT | Oil & Gas Property | Jan 2025 |
| 1519 | OSWOOD | Liberty County, MT | Gas Property | Jan 2025 |
| 1520 | OSWOOD | Liberty County, MT | Gas Property | Jan 2025 |
| 1521 | OTIS 2658 43-23H | Richland County, MT | Oil & Gas Property | Jan 2025 |
| 1522 | OTTMAN | Rosebud County, MT | Oil Property | Oct 2023 |
| 1523 | OUTLOOK | Sheridan County, MT | Oil & Gas Property | Aug 1996 |
| 1524 | OVERBY | Toole County, MT | Gas Property | Nov 2024 |
| 1525 | P. SOLBERG | Sheridan County, MT | Oil & Gas Property | Dec 1998 |
| 1526 | PADLOCK | Big Horn County, MT | Gas Property | Jun 2017 |
| 1527 | PALMER | Hill County, MT | Gas Property | Sep 2009 |
| 1528 | PALMER 24-21 | Richland County, MT | Oil & Gas Property | Jan 2025 |
| 1529 | PALMER/BOW ISLAND | Glacier County, MT | Gas Property | Mar 2004 |
| 1530 | PANASUK | Roosevelt County, MT | Oil & Gas Property | Jan 2025 |
| 1531 | PANKRATZ | Valley County, MT | Oil & Gas Property | Nov 2007 |
| 1532 | PARKER | Glacier County, MT | Gas Property | Jan 2025 |
| 1533 | PARKER | Toole County, MT | Oil & Gas Property | Oct 2009 |
| 1534 | PARKER | Toole County, MT | Oil Property | Mar 2020 |
| 1535 | PARKER | Toole County, MT | Gas Property | Jan 2025 |
| 1536 | PARSELL | Toole County, MT | Gas Property | May 2024 |
| 1537 | PARSELL | Toole County, MT | Gas Property | Oct 2024 |
| 1538 | PARSONS FEDERAL 1-6H | Richland County, MT | Oil & Gas Property | Jan 2025 |
| 1539 | PATRICIA 41X-15 | Richland County, MT | Oil & Gas Property | Jan 2025 |
| 1540 | PATTISON | Hill County, MT | Gas Property | Jan 2025 |
| 1541 | PAUL BYRON 27 | Roosevelt County, MT | Oil & Gas Property | Jan 2025 |
| 1542 | PAULSEN | Blaine County, MT | Gas Property | Jan 2025 |
| 1543 | PAULSEN 2 | Blaine County, MT | Gas Property | Jan 2025 |
| 1544 | PEABODY | Richland County, MT | Oil & Gas Property | Jan 2025 |
| 1545 | PEABODY MIN | Richland County, MT | Oil & Gas Property | Jan 2025 |
| 1546 | PEABODY-BAHLS 2-16H | Richland County, MT | Oil & Gas Property | Jan 2025 |
| 1547 | PEABODY-ODENBACH 2-14H | Richland County, MT | Oil & Gas Property | Jan 2025 |
| 1548 | PEABODY-STEVE 35-3-HLID3 | Richland County, MT | Oil & Gas Property | Jan 2025 |
| 1549 | PEABODY-WILLIAMS 26-16H | Richland County, MT | Oil & Gas Property | Jan 2025 |
| 1550 | PEANUT | Richland County, MT | Oil & Gas Property | Jan 2025 |
| 1551 | PEANUT EAST | Richland County, MT | Oil & Gas Property | Jan 2025 |
| 1552 | PEANUT-ANNIE 16-3-HLID3 | Richland County, MT | Oil & Gas Property | Jan 2025 |
| 1553 | PECK | Toole County, MT | Oil & Gas Property | May 2024 |
| 1554 | PEDERSON | Richland County, MT | Oil & Gas Property | Sep 2018 |
| 1555 | PEDERSON | Toole County, MT | Oil Property | Jan 2025 |
| 1556 | PENELOPE | Richland County, MT | Oil & Gas Property | Jan 2025 |
| 1557 | PENELOPE-DIANE 30-16H | Richland County, MT | Oil & Gas Property | Jan 2025 |
| 1558 | PENELOPE-FIRST CHURCH 24-2H | Richland County, MT | Oil & Gas Property | Jan 2025 |
| 1559 | PENNEL | Fallon County, MT | Oil & Gas Property | Jan 2025 |
| 1560 | PEOPLES | Glacier County, MT | Gas Property | Jan 2025 |
| 1561 | PEOPLES STATE BANK | Toole County, MT | Gas Property | Apr 2024 |
| 1562 | PETERSCHICK | Toole County, MT | Gas Property | Dec 2024 |
| 1563 | PETERSEN | Richland County, MT | Oil & Gas Property | Jan 2025 |
| 1564 | PETERSEN | Sheridan County, MT | Oil & Gas Property | Apr 1989 |
| 1565 | PETERSEN 41X-28 | Richland County, MT | Oil & Gas Property | Jan 2025 |
| 1566 | PETERSON | Hill County, MT | Gas Property | Aug 2021 |
| 1567 | PETERSON | Glacier County, MT | Gas Property | Jan 2025 |
| 1568 | PETERSON | Toole County, MT | Gas Property | Jan 2025 |
| 1569 | PETERSON | Blaine County, MT | Gas Property | Oct 2001 |
| 1570 | PETERSON | Toole County, MT | Oil Property | Aug 2024 |
| 1571 | PETERSON | Toole County, MT | Oil Property | Jan 2024 |
| 1572 | PETERSON | Richland County, MT | Oil & Gas Property | Jun 2022 |
| 1573 | PETERSON | Glacier County, MT | Gas Property | Dec 2024 |
| 1574 | PETERSON | Roosevelt County, MT | Oil & Gas Property | Nov 2001 |
| 1575 | PETRO-TAYLOR | Liberty County, MT | Oil & Gas Property | Jan 2025 |
| 1576 | PETTERS | Toole County, MT | Gas Property | Jan 2025 |
| 1577 | PEWTERS | Toole County, MT | Oil & Gas Property | Aug 2024 |
| 1578 | PHILIPPS | Pondera County, MT | Oil Property | Dec 2024 |
| 1579 | PHILLIPS 11X-23 | Richland County, MT | Oil & Gas Property | Jan 2025 |
| 1580 | PIANO MAN 7-6-31 | Richland County, MT | Oil & Gas Property | Jan 2025 |
| 1581 | PICARD | Roosevelt County, MT | Oil & Gas Property | Feb 2019 |
| 1582 | PICARD | Roosevelt County, MT | Oil & Gas Property | Feb 2024 |
| 1583 | PICARD | Roosevelt County, MT | Oil & Gas Property | Nov 2002 |
| 1584 | PIERCY FEDERAL 2758 13-5H | Roosevelt County, MT | Oil & Gas Property | Jan 2025 |
| 1585 | PINE UNIT | Fallon County, MT | Oil & Gas Property | Jan 2025 |
| 1586 | PINE UNIT | Wibaux County, MT | Oil & Gas Property | May 2012 |
| 1587 | PINE UNIT 33-32 | Wibaux County, MT | Oil & Gas Property | Jan 2025 |
| 1588 | PIONEER | Glacier County, MT | Gas Property | Jan 2025 |
| 1589 | PLEASANT VALLEY | Richland County, MT | Oil & Gas Property | Jan 2025 |
| 1590 | PLESKAC | Hill County, MT | Gas Property | Jan 2025 |
| 1591 | PONDERA BANK | Pondera County, MT | Oil Property | Dec 2024 |
| 1592 | POORE | Toole County, MT | Gas Property | Nov 2024 |
| 1593 | POPPY FEDERAL 2658 12-17H | Richland County, MT | Oil & Gas Property | Jan 2025 |
| 1594 | PORKER | Toole County, MT | Oil & Gas Property | Nov 2024 |
| 1595 | PORKY CARDA 9-16 H | Richland County, MT | Oil & Gas Property | Jan 2025 |
| 1596 | PORKY STATE 16-14H | Richland County, MT | Oil & Gas Property | Jan 2025 |
| 1597 | PORKY-ANTONE 9-14-H | Richland County, MT | Oil & Gas Property | Jan 2025 |
| 1598 | PORKY-IRIGOIN 31-14H | Richland County, MT | Oil & Gas Property | Jan 2025 |
| 1599 | PORTER | Toole County, MT | Oil & Gas Property | May 2024 |
| 1600 | PORTER | Big Horn County, MT | Gas Property | Aug 2019 |