| 3901 | REI H | Weld County, CO | Oil & Gas Property | Feb 2023 |
| 3902 | REICHERT | Weld County, CO | Oil & Gas Property | Feb 2023 |
| 3903 | REICHERT | Weld County, CO | Oil & Gas Property | Apr 2017 |
| 3904 | REIGLE | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 3905 | REIN | Weld County, CO | Oil & Gas Property | Apr 2019 |
| 3906 | REINERS B | Logan County, CO | Oil Property | Mar 2024 |
| 3907 | REINICK | Weld County, CO | Oil & Gas Property | Jun 2020 |
| 3908 | REININGHAUS | La Plata County, CO | Gas Property | Sep 2025 |
| 3909 | REINSCH | La Plata County, CO | Gas Property | Sep 2025 |
| 3910 | RELIANCE E 23 | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 3911 | REMINGTON FEDERAL LC | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 3912 | REMORA LC34-7 | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 3913 | RENFROE | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 3914 | RENZELMAN | Yuma County, CO | Gas Property | Sep 2025 |
| 3915 | REPPO | Garfield County, CO | Oil & Gas Property | Sep 2025 |
| 3916 | RESERVE 3-65 | Adams County, CO | Oil & Gas Property | Sep 2025 |
| 3917 | RESERVE FEDERAL 3-65 35-34 | Adams County, CO | Oil & Gas Property | Sep 2025 |
| 3918 | RESLER | Washington County, CO | Oil & Gas Property | Feb 2015 |
| 3919 | RESOLUTE | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 3920 | RETHERFORD | Montezuma County, CO | Oil & Gas Property | Sep 2012 |
| 3921 | REVEILLE A3 | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 3922 | REYNOLDS | Weld County, CO | Oil & Gas Property | Dec 2018 |
| 3923 | REYNOLDS | Weld County, CO | Oil & Gas Property | Oct 2019 |
| 3924 | REYNOLDS CATTLE | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 3925 | RH FARMS | Weld County, CO | Oil & Gas Property | Sep 2024 |
| 3926 | RHINO D 27 | Weld County, CO | Oil & Gas Property | Apr 2020 |
| 3927 | RHOADARMER | Weld County, CO | Oil & Gas Property | May 2016 |
| 3928 | RHOADES | Cheyenne County, CO | Oil & Gas Property | Sep 2025 |
| 3929 | RHOADES 3-33 | La Plata County, CO | Gas Property | Sep 2025 |
| 3930 | RICE | Logan County, CO | Oil & Gas Property | Sep 2025 |
| 3931 | RICE | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 3932 | RICE 22 | Weld County, CO | Oil & Gas Property | Apr 2020 |
| 3933 | RICHARD R FINDLAY | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 3934 | RICHARDSON | Yuma County, CO | Gas Property | Sep 2025 |
| 3935 | RICHARDSON | Weld County, CO | Oil & Gas Property | Apr 2016 |
| 3936 | RICHARDSON | Weld County, CO | Oil & Gas Property | Jun 2020 |
| 3937 | RICHARDSON | La Plata County, CO | Gas Property | Sep 2025 |
| 3938 | RICHERS | Yuma County, CO | Oil & Gas Property | Sep 2025 |
| 3939 | RICHTER | Weld County, CO | Oil & Gas Property | May 2025 |
| 3940 | RICKS | Weld County, CO | Oil & Gas Property | Sep 2019 |
| 3941 | RICO LC29-7 | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 3942 | RIDGE STATE | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 3943 | RIDGWAY | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 3944 | RIEDER | Weld County, CO | Oil & Gas Property | Dec 2018 |
| 3945 | RIEDER 18 | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 3946 | RIEKE | Logan County, CO | Gas Property | Oct 2025 |
| 3947 | RIFLE FALLS | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 3948 | RIGBY | Rio Blanco County, CO | Oil & Gas Property | Oct 2025 |
| 3949 | RIGGS | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 3950 | RILEY LD19-7 | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 3951 | RINGO FEDERAL LC23-72 | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 3952 | RINN VALLEY | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 3953 | RIO 1 | Adams County, CO | Oil & Gas Property | Sep 2025 |
| 3954 | RIO 2 | Adams County, CO | Oil & Gas Property | Sep 2025 |
| 3955 | RIO LC 12 | Adams County, CO | Oil & Gas Property | Sep 2025 |
| 3956 | RISSLER STATE | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 3957 | RITCHEY | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 3958 | RITCHEY | Weld County, CO | Oil & Gas Property | Jun 2020 |
| 3959 | RITEAWAY | Weld County, CO | Oil & Gas Property | Apr 2024 |
| 3960 | RIVA | Weld County, CO | Oil & Gas Property | Dec 2019 |
| 3961 | RIVA BLUE | Weld County, CO | Oil & Gas Property | Feb 2020 |
| 3962 | RIVER RANCH | Garfield County, CO | Oil & Gas Property | Sep 2025 |
| 3963 | RIVERBEND | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 3964 | RMF 3 | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 3965 | RMF 5N-15HZ | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 3966 | RNPU 19 | Rio Blanco County, CO | Oil & Gas Property | Sep 2025 |
| 3967 | ROACH N1 | Weld County, CO | Oil & Gas Property | Sep 2024 |
| 3968 | ROAD RUNNER FED 0397-23-14 | Rio Blanco County, CO | Oil & Gas Property | Sep 2025 |
| 3969 | ROADRUNNER | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 3970 | ROADRUNNER | Montezuma County, CO | Oil & Gas Property | Jan 2011 |
| 3971 | ROBBINS | Washington County, CO | Oil Property | Sep 2025 |
| 3972 | ROBBINS RANCH | Baca County, CO | Gas Property | Nov 2023 |
| 3973 | ROBERT | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 3974 | ROBERT DULIN | La Plata County, CO | Gas Property | Sep 2025 |
| 3975 | ROBERT MCCOY | La Plata County, CO | Gas Property | Sep 2025 |
| 3976 | ROBERT POWERS | Weld County, CO | Oil & Gas Property | Dec 2019 |
| 3977 | ROBERT&JOANN KLIE | Yuma County, CO | Gas Property | Sep 2025 |
| 3978 | ROBERTS | Boulder County, CO | Oil & Gas Property | Jul 2022 |
| 3979 | ROBERTS | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 3980 | ROBERTS CANYON | Mesa County, CO | Oil & Gas Property | Sep 2025 |
| 3981 | ROBERTSON | Yuma County, CO | Gas Property | Sep 2025 |
| 3982 | ROBERTSON 1 | Weld County, CO | Oil & Gas Property | Mar 2025 |
| 3983 | ROBIDOUX | Moffat County, CO | Gas Property | Feb 2015 |
| 3984 | ROBIN 9 | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 3985 | ROBINSON | Garfield County, CO | Oil & Gas Property | Sep 2025 |
| 3986 | ROBINSON 1 | Las Animas County, CO | Gas Property | Oct 2025 |
| 3987 | ROCK CANYON | Garfield County, CO | Gas Property | Sep 2025 |
| 3988 | ROCKWELL | Yuma County, CO | Oil & Gas Property | Sep 2025 |
| 3989 | ROCKY | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 3990 | ROCKY MOUNTAIN FUEL | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 3991 | ROCKY MTN FUEL | Weld County, CO | Oil & Gas Property | Dec 2018 |
| 3992 | RODMAN BRUN | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 3993 | ROE 13-1 | Garfield County, CO | Oil & Gas Property | Sep 2025 |
| 3994 | ROGER KELLY | La Plata County, CO | Gas Property | Sep 2025 |
| 3995 | ROHN | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 3996 | ROHN LD 09-62HN | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 3997 | ROHN STATE LD | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 3998 | ROHR | Weld County, CO | Oil & Gas Property | Jan 2020 |
| 3999 | ROLAND X | Weld County, CO | Oil & Gas Property | Nov 2019 |
| 4000 | ROLES 1 | Garfield County, CO | Oil & Gas Property | Sep 2025 |