| 4101 | SGV FEDERAL | Garfield County, CO | Oil & Gas Property | Jul 2024 |
| 4102 | SHABLE | Weld County, CO | Oil & Gas Property | May 2024 |
| 4103 | SHABLE | Weld County, CO | Oil & Gas Property | May 2026 |
| 4104 | SHABLE | Weld County, CO | Oil & Gas Property | May 2026 |
| 4105 | SHABLE | Weld County, CO | Oil & Gas Property | Jul 2017 |
| 4106 | SHABLE | Weld County, CO | Oil & Gas Property | May 2026 |
| 4107 | SHABLE USX | Weld County, CO | Oil & Gas Property | Mar 2026 |
| 4108 | SHADOW | Weld County, CO | Oil & Gas Property | May 2026 |
| 4109 | SHAEFFER | Garfield County, CO | Oil & Gas Property | May 2026 |
| 4110 | SHAFER | Weld County, CO | Oil & Gas Property | Nov 2019 |
| 4111 | SHAFFER-NEWMAN | Boulder County, CO | Oil & Gas Property | May 2026 |
| 4112 | SHAFTO J27 | Weld County, CO | Oil & Gas Property | Aug 2018 |
| 4113 | SHAKE 11 | Weld County, CO | Oil & Gas Property | May 2026 |
| 4114 | SHAKLEE | Weld County, CO | Oil & Gas Property | Jun 2019 |
| 4115 | SHALLOT 1930 | Weld County, CO | Oil & Gas Property | May 2026 |
| 4116 | SHANNON 14 | Weld County, CO | Oil & Gas Property | Sep 2016 |
| 4117 | SHANNON-ROBERTS | Broomfield County, CO | Oil & Gas Property | Feb 2026 |
| 4118 | SHARKEY | Weld County, CO | Oil & Gas Property | Nov 2021 |
| 4119 | SHARON 21 | Weld County, CO | Oil & Gas Property | May 2026 |
| 4120 | SHARP | Washington County, CO | Oil Property | May 2025 |
| 4121 | SHARP | La Plata County, CO | Gas Property | May 2026 |
| 4122 | SHARP 2 | Adams County, CO | Oil & Gas Property | May 2026 |
| 4123 | SHARP-BLAKE | Washington County, CO | Oil Property | May 2026 |
| 4124 | SHARPE STATE LD02-7 | Weld County, CO | Oil & Gas Property | May 2026 |
| 4125 | SHARPLES-MCLAUGHLIN | Rio Blanco County, CO | Oil & Gas Property | May 2026 |
| 4126 | SHAW 1 | Weld County, CO | Oil & Gas Property | May 2024 |
| 4127 | SHAY | Yuma County, CO | Gas Property | May 2026 |
| 4128 | SHEA 23-1 | Yuma County, CO | Gas Property | May 2026 |
| 4129 | SHEAR | Mesa County, CO | Gas Property | Oct 2001 |
| 4130 | SHEEP | Weld County, CO | Oil & Gas Property | Feb 2020 |
| 4131 | SHEEP MOUNT | Huerfano County, CO | Gas Property | May 2026 |
| 4132 | SHELDUCK | Weld County, CO | Oil & Gas Property | May 2026 |
| 4133 | SHELEY | Weld County, CO | Oil & Gas Property | May 2026 |
| 4134 | SHELL | Garfield County, CO | Oil & Gas Property | May 2026 |
| 4135 | SHELL CREEK | Moffat County, CO | Oil & Gas Property | Apr 2026 |
| 4136 | SHELTON | Weld County, CO | Oil & Gas Property | May 2026 |
| 4137 | SHERLEY | Weld County, CO | Oil & Gas Property | Mar 2026 |
| 4138 | SHERWOOD L | Weld County, CO | Oil & Gas Property | Sep 2022 |
| 4139 | SHIDELER | Garfield County, CO | Oil & Gas Property | May 2026 |
| 4140 | SHIDELER | Garfield County, CO | Oil & Gas Property | May 2026 |
| 4141 | SHIDELER FEDER | Garfield County, CO | Oil & Gas Property | May 2026 |
| 4142 | SHIVELY | Adams County, CO | Oil & Gas Property | Sep 2021 |
| 4143 | SHIVELY | Yuma County, CO | Gas Property | May 2026 |
| 4144 | SHIVERS | Weld County, CO | Oil & Gas Property | Dec 2017 |
| 4145 | SHOEMAKER | Weld County, CO | Oil & Gas Property | Jul 2025 |
| 4146 | SHOEMAKER 01-34 | La Plata County, CO | Gas Property | May 2026 |
| 4147 | SHOENEMAN | Weld County, CO | Oil & Gas Property | Jul 2014 |
| 4148 | SHOOK 3-10 | Adams County, CO | Oil & Gas Property | Apr 2026 |
| 4149 | SHORE 16 | Garfield County, CO | Oil & Gas Property | May 2026 |
| 4150 | SHORT | Yuma County, CO | Oil & Gas Property | May 2026 |
| 4151 | SHORTY | Morgan County, CO | Oil & Gas Property | May 2023 |
| 4152 | SHOVELER FED | Weld County, CO | Oil & Gas Property | May 2026 |
| 4153 | SHOVELER GOLDENEYE FED 21-16-1HN | Weld County, CO | Oil & Gas Property | May 2026 |
| 4154 | SHOVELER HUNT FED 19-24-16HN | Weld County, CO | Oil & Gas Property | May 2026 |
| 4155 | SHOWERS | Weld County, CO | Oil & Gas Property | Apr 2021 |
| 4156 | SHUFLY STATE Y34-7 | Weld County, CO | Oil & Gas Property | May 2026 |
| 4157 | SHULL | Weld County, CO | Oil & Gas Property | May 2026 |
| 4158 | SHULTZ | Weld County, CO | Oil & Gas Property | Apr 2023 |
| 4159 | SHULTZ | Weld County, CO | Oil & Gas Property | Nov 2018 |
| 4160 | SHUPE 13 | Weld County, CO | Oil & Gas Property | Jan 2023 |
| 4161 | SHUR VIEW | Weld County, CO | Oil & Gas Property | May 2026 |
| 4162 | SHUTT | Weld County, CO | Oil & Gas Property | Nov 2013 |
| 4163 | SICKLER | Weld County, CO | Oil & Gas Property | May 2026 |
| 4164 | SIDNEY STREAR | Weld County, CO | Oil & Gas Property | May 2026 |
| 4165 | SIDWELL | Weld County, CO | Oil & Gas Property | Dec 2015 |
| 4166 | SIEBRING | Weld County, CO | Oil & Gas Property | May 2026 |
| 4167 | SIERRA M | Arapahoe County, CO | Oil & Gas Property | May 2026 |
| 4168 | SIEVERS | Weld County, CO | Oil & Gas Property | May 2026 |
| 4169 | SIEVERS | Weld County, CO | Oil & Gas Property | Sep 2020 |
| 4170 | SIGG | Weld County, CO | Oil & Gas Property | May 2026 |
| 4171 | SILT VALLEY | Garfield County, CO | Oil & Gas Property | May 2026 |
| 4172 | SILVA | Weld County, CO | Oil & Gas Property | Aug 2019 |
| 4173 | SILVERBACK | Weld County, CO | Oil & Gas Property | May 2026 |
| 4174 | SILVERTON 5 | Weld County, CO | Oil & Gas Property | May 2026 |
| 4175 | SIMINOE | Mesa County, CO | Oil & Gas Property | Jul 2017 |
| 4176 | SIMMONS | Yuma County, CO | Gas Property | May 2026 |
| 4177 | SIMMONS | Yuma County, CO | Gas Property | Jun 2026 |
| 4178 | SIMMONS | Weld County, CO | Oil & Gas Property | Feb 2023 |
| 4179 | SIMMONS | La Plata County, CO | Gas Property | May 2026 |
| 4180 | SIMMS | La Plata County, CO | Gas Property | May 2026 |
| 4181 | SIMON LAND & CATTLE | La Plata County, CO | Gas Property | May 2026 |
| 4182 | SIMONSEN | Weld County, CO | Oil & Gas Property | May 2026 |
| 4183 | SIMONSEN-SCHAEFER 7 | Weld County, CO | Oil & Gas Property | Dec 2024 |
| 4184 | SIMPSON | Adams County, CO | Oil & Gas Property | Mar 2026 |
| 4185 | SIMPSON | Weld County, CO | Oil & Gas Property | May 2026 |
| 4186 | SIMPSON | Weld County, CO | Oil & Gas Property | May 2026 |
| 4187 | SIMPSON 2 | Moffat County, CO | Gas Property | Jun 2025 |
| 4188 | SIMPSON MD 2 | Boulder County, CO | Oil & Gas Property | Apr 2025 |
| 4189 | SINDT 1 | Logan County, CO | Oil Property | May 2026 |
| 4190 | SINGER E 34 | Weld County, CO | Oil & Gas Property | Aug 2016 |
| 4191 | SINGLE EAGLE | San Miguel County, CO | Oil & Gas Property | Dec 2024 |
| 4192 | SINJIN | Weld County, CO | Oil & Gas Property | Nov 2025 |
| 4193 | SIRIOS BROTHERS | Weld County, CO | Oil & Gas Property | Sep 2015 |
| 4194 | SITTON 01-13 | La Plata County, CO | Gas Property | May 2026 |
| 4195 | SITTON FEDERAL | La Plata County, CO | Gas Property | May 2026 |
| 4196 | SITZMAN | Weld County, CO | Oil & Gas Property | Dec 2017 |
| 4197 | SITZMAN | Weld County, CO | Oil & Gas Property | May 2017 |
| 4198 | SITZMAN | Weld County, CO | Oil & Gas Property | Oct 2016 |
| 4199 | SITZMAN | Weld County, CO | Oil & Gas Property | Apr 2013 |
| 4200 | SKAER | Larimer County, CO | Oil & Gas Property | Jun 2017 |