| 1601 | R.S. ALLEN | Toole County, MT | Oil Property | Sep 1996 |
| 1602 | RABBIT | Blaine County, MT | Oil & Gas Property | Mar 2023 |
| 1603 | RABBIT | Blaine County, MT | Oil Property | Apr 2026 |
| 1604 | RALPH SWENS | Glacier County, MT | Oil Property | Apr 2026 |
| 1605 | RALSTON | Richland County, MT | Oil & Gas Property | Apr 2026 |
| 1606 | RAMBERG | Blaine County, MT | Gas Property | Apr 2026 |
| 1607 | RAMBERG | Blaine County, MT | Gas Property | Apr 2026 |
| 1608 | RANCHOLME | Big Horn County, MT | Gas Property | Aug 2019 |
| 1609 | RANCHOLME | Big Horn County, MT | Gas Property | Dec 2013 |
| 1610 | RANCHOLME 2 | Big Horn County, MT | Gas Property | Aug 2019 |
| 1611 | RANKIN | Toole County, MT | Gas Property | Mar 2026 |
| 1612 | RASK | Daniels County, MT | Oil Property | Nov 2025 |
| 1613 | RASMUSSEN | Richland County, MT | Oil & Gas Property | Apr 2026 |
| 1614 | RAU 1 | Richland County, MT | Oil & Gas Property | Apr 2026 |
| 1615 | RAU 2 | Richland County, MT | Oil & Gas Property | Mar 1995 |
| 1616 | RAU 41X-15 | Richland County, MT | Oil & Gas Property | Apr 2026 |
| 1617 | RAY T FEDERAL 2958 13-26H | Roosevelt County, MT | Oil & Gas Property | Apr 2026 |
| 1618 | RAYMOND | Toole County, MT | Gas Property | Mar 2026 |
| 1619 | RAYMOND | Rosebud County, MT | Oil & Gas Property | Oct 2025 |
| 1620 | RAYMOND SVEET 31-29H | Sheridan County, MT | Oil & Gas Property | Apr 2026 |
| 1621 | READ | Blaine County, MT | Gas Property | Apr 2026 |
| 1622 | REAGAN | Richland County, MT | Oil & Gas Property | Apr 2026 |
| 1623 | REAVIS | Big Horn County, MT | Gas Property | Aug 2019 |
| 1624 | RED CR | Glacier County, MT | Oil & Gas Property | Apr 2026 |
| 1625 | RED FOX 1 | Roosevelt County, MT | Oil & Gas Property | Nov 1991 |
| 1626 | REDSTONE | Valley County, MT | Oil & Gas Property | Nov 1986 |
| 1627 | REEG | Toole County, MT | Oil Property | Apr 2026 |
| 1628 | REEVES | Blaine County, MT | Gas Property | Apr 2026 |
| 1629 | REIDT | Toole County, MT | Gas Property | Mar 2026 |
| 1630 | REIMANN | Richland County, MT | Oil & Gas Property | Apr 2026 |
| 1631 | REMINGTON | Toole County, MT | Oil Property | Mar 2026 |
| 1632 | REMINGTON | Sheridan County, WY | Gas Property | Dec 2023 |
| 1633 | RENEGADE 1-10H | Roosevelt County, MT | Oil & Gas Property | Apr 2026 |
| 1634 | RESTANA | Toole County, MT | Gas Property | Feb 2026 |
| 1635 | REUM | Hill County, MT | Gas Property | Apr 2026 |
| 1636 | REVEILLE FED. 2759 14-26H | Roosevelt County, MT | Oil & Gas Property | Apr 2026 |
| 1637 | REVERE | Richland County, MT | Oil & Gas Property | Apr 2026 |
| 1638 | RICE | Toole County, MT | Gas Property | Apr 2026 |
| 1639 | RICE | Teton County, MT | Oil Property | Feb 2026 |
| 1640 | RICE BLUHM | Toole County, MT | Oil Property | Apr 2026 |
| 1641 | RICE STANNARD STATE | Toole County, MT | Oil Property | Jan 2026 |
| 1642 | RICE STATE | Toole County, MT | Oil Property | Jan 2026 |
| 1643 | RICHARD 21X-29 | Richland County, MT | Oil & Gas Property | Apr 2026 |
| 1644 | RICHARDSON | Sheridan County, MT | Oil & Gas Property | Nov 2017 |
| 1645 | RICHARDSON 27 | Hill County, MT | Gas Property | Apr 2026 |
| 1646 | RICHARDSON 33-37-8 | Hill County, MT | Oil Property | Jul 2023 |
| 1647 | RICHLAND STATE 11X31 | Richland County, MT | Oil & Gas Property | Apr 2026 |
| 1648 | RIDLE | Toole County, MT | Gas Property | Feb 2026 |
| 1649 | RIECKHOFF | Glacier County, MT | Oil Property | Dec 2025 |
| 1650 | RIMROCK-KENN | Toole County, MT | Oil Property | Apr 2026 |
| 1651 | RING FEDERAL 2858 44-34H | Roosevelt County, MT | Oil & Gas Property | Apr 2026 |
| 1652 | RIPLEY 1-24H | Richland County, MT | Oil & Gas Property | Apr 2026 |
| 1653 | RISLEY 1 | Blaine County, MT | Gas Property | Apr 2026 |
| 1654 | RITA | Richland County, MT | Oil & Gas Property | Apr 2026 |
| 1655 | RITTENHOUSE | Toole County, MT | Gas Property | Mar 2026 |
| 1656 | RIVA RIDGE | Sheridan County, MT | Oil & Gas Property | Apr 2026 |
| 1657 | RKT CARDA 7-6 | Richland County, MT | Oil & Gas Property | Apr 2026 |
| 1658 | ROBERT P<> | Toole County, MT | Gas Property | Feb 2026 |
| 1659 | ROBERTS | Rosebud County, MT | Oil & Gas Property | Sep 2025 |
| 1660 | ROBERTS | Richland County, MT | Oil & Gas Property | Apr 2026 |
| 1661 | ROBERTS | Blaine County, MT | Gas Property | Apr 2026 |
| 1662 | ROBERTS | Blaine County, MT | Gas Property | Apr 2026 |
| 1663 | ROBINSON | Blaine County, MT | Gas Property | Apr 2026 |
| 1664 | ROBINSON | Carbon County, MT | Oil & Gas Property | May 2024 |
| 1665 | ROCK HAPPY 33-3H | Rosebud County, MT | Oil & Gas Property | Apr 2026 |
| 1666 | ROCKY | Richland County, MT | Oil & Gas Property | Apr 2026 |
| 1667 | ROCKY BOY | Hill County, MT | Gas Property | Apr 2026 |
| 1668 | ROCKY BOY | Hill County, MT | Gas Property | Apr 2026 |
| 1669 | ROCKY BOY-DIR 2 | Hill County, MT | Gas Property | Apr 2026 |
| 1670 | ROCKY CINDY 30-15 | Richland County, MT | Oil & Gas Property | Apr 2026 |
| 1671 | ROCKY INFI | Richland County, MT | Oil & Gas Property | Apr 2026 |
| 1672 | ROCKY-FRANZ 20-2H | Richland County, MT | Oil & Gas Property | Apr 2026 |
| 1673 | ROGERS | Toole County, MT | Gas Property | Apr 2026 |
| 1674 | ROGERS | Toole County, MT | Gas Property | Apr 2026 |
| 1675 | ROGNAS | Richland County, MT | Oil & Gas Property | Apr 2026 |
| 1676 | ROGNAS-BARBARA HSU | Richland County, MT | Oil & Gas Property | Apr 2026 |
| 1677 | ROMAN ROY 31-30-1H | Richland County, MT | Oil & Gas Property | Apr 2026 |
| 1678 | ROMO BRO | Roosevelt County, MT | Oil & Gas Property | Apr 2026 |
| 1679 | ROMO BRO MARGARET 2759 43-9B | Roosevelt County, MT | Oil & Gas Property | Apr 2026 |
| 1680 | RONIN | Roosevelt County, MT | Oil & Gas Property | Apr 2026 |
| 1681 | ROSE COULEE 2 | Hill County, MT | Gas Property | Apr 2026 |
| 1682 | ROSS | Blaine County, MT | Gas Property | Apr 2026 |
| 1683 | ROSSMILLER GOVT | Toole County, MT | Oil & Gas Property | Apr 2026 |
| 1684 | ROWIN 17 | Richland County, MT | Oil & Gas Property | Apr 2026 |
| 1685 | RUBY ALLEN | Toole County, MT | Oil & Gas Property | Apr 2026 |
| 1686 | RUDOLPH | Roosevelt County, MT | Oil & Gas Property | Apr 2026 |
| 1687 | RUDOLPH | Roosevelt County, MT | Oil & Gas Property | Jun 2020 |
| 1688 | RUEGSEGGER | Sheridan County, MT | Oil & Gas Property | Apr 2026 |
| 1689 | RUFFATTO | Richland County, MT | Oil & Gas Property | Apr 2026 |
| 1690 | RUNKEL 1 | Hill County, MT | Gas Property | Dec 1997 |
| 1691 | RUSSELL | Toole County, MT | Gas Property | Apr 2026 |
| 1692 | RUTHERFORD | Pondera County, MT | Oil Property | Apr 2001 |
| 1693 | S BAR B | Blaine County, MT | Gas Property | Apr 2026 |
| 1694 | S-B 33 | Blaine County, MT | Gas Property | Apr 2026 |
| 1695 | S-B RANCH | Blaine County, MT | Gas Property | Apr 2026 |
| 1696 | S-B RANCH | Blaine County, MT | Gas Property | Apr 2026 |
| 1697 | S.W. BATTLE | Blaine County, MT | Gas Property | Mar 2026 |
| 1698 | SABER 1-4H | Richland County, MT | Oil & Gas Property | Apr 2026 |
| 1699 | SAGE BRUSH 2758 4 | Roosevelt County, MT | Oil & Gas Property | Apr 2026 |
| 1700 | SALSBURY | Richland County, MT | Oil & Gas Property | Nov 2021 |