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