| 4001 | SHIVELY | Yuma County, CO | Gas Property | Feb 2024 |
| 4002 | SHIVERS | Weld County, CO | Oil & Gas Property | Dec 2017 |
| 4003 | SHOEMAKER | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 4004 | SHOEMAKER 01-34 | La Plata County, CO | Gas Property | Feb 2024 |
| 4005 | SHOENEMAN | Weld County, CO | Oil & Gas Property | Jul 2014 |
| 4006 | SHOOK 3-10 | Adams County, CO | Oil & Gas Property | Feb 2024 |
| 4007 | SHORE 16 | Garfield County, CO | Oil & Gas Property | Feb 2024 |
| 4008 | SHORT | Yuma County, CO | Oil & Gas Property | Feb 2024 |
| 4009 | SHORTY | Morgan County, CO | Oil & Gas Property | May 2023 |
| 4010 | SHOVELER FED | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 4011 | SHOVELER GOLDENEYE FED 21-16-1HN | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 4012 | SHOVELER HUNT FED 19-24-16HN | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 4013 | SHOWERS | Weld County, CO | Oil & Gas Property | Apr 2021 |
| 4014 | SHUFLY STATE Y34-7 | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 4015 | SHULL | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 4016 | SHULTZ | Weld County, CO | Oil & Gas Property | Apr 2023 |
| 4017 | SHULTZ | Weld County, CO | Oil & Gas Property | Nov 2018 |
| 4018 | SHUPE 13 | Weld County, CO | Oil & Gas Property | Jan 2023 |
| 4019 | SHUR VIEW | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 4020 | SHUTT | Weld County, CO | Oil & Gas Property | Aug 2014 |
| 4021 | SICKLER | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 4022 | SIDNEY STREAR | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 4023 | SIDWELL | Weld County, CO | Oil & Gas Property | Dec 2015 |
| 4024 | SIEBRING | Weld County, CO | Oil & Gas Property | Jan 2024 |
| 4025 | SIERRA M | Arapahoe County, CO | Oil & Gas Property | Feb 2024 |
| 4026 | SIEVERS | Weld County, CO | Oil & Gas Property | May 2023 |
| 4027 | SIEVERS | Weld County, CO | Oil & Gas Property | Sep 2020 |
| 4028 | SIGG | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 4029 | SILT VALLEY | Garfield County, CO | Oil & Gas Property | Feb 2024 |
| 4030 | SILVA | Weld County, CO | Oil & Gas Property | Aug 2019 |
| 4031 | SILVERTON 5 | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 4032 | SIMINOE | Mesa County, CO | Oil & Gas Property | Jul 2017 |
| 4033 | SIMMONS | Yuma County, CO | Gas Property | Feb 2024 |
| 4034 | SIMMONS | Yuma County, CO | Gas Property | Mar 2024 |
| 4035 | SIMMONS | Weld County, CO | Oil & Gas Property | Feb 2023 |
| 4036 | SIMMONS | La Plata County, CO | Gas Property | Feb 2024 |
| 4037 | SIMMS | La Plata County, CO | Gas Property | Feb 2024 |
| 4038 | SIMON LAND & CATTLE | La Plata County, CO | Gas Property | Feb 2024 |
| 4039 | SIMONSEN | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 4040 | SIMONSEN-SCHAEFER 7 | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 4041 | SIMPSON | Adams County, CO | Oil & Gas Property | Dec 2023 |
| 4042 | SIMPSON | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 4043 | SIMPSON | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 4044 | SIMPSON 2 | Moffat County, CO | Gas Property | Feb 2024 |
| 4045 | SIMPSON MD 2 | Boulder County, CO | Oil & Gas Property | Jan 2021 |
| 4046 | SINDT 1 | Logan County, CO | Oil Property | Feb 2024 |
| 4047 | SINGER E 34 | Weld County, CO | Oil & Gas Property | Aug 2016 |
| 4048 | SINGLE EAGLE | San Miguel County, CO | Oil & Gas Property | Nov 2023 |
| 4049 | SINJIN | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 4050 | SIRIOS BROTHERS | Weld County, CO | Oil & Gas Property | Aug 2015 |
| 4051 | SITTON FEDERAL | La Plata County, CO | Gas Property | Feb 2024 |
| 4052 | SITZMAN | Weld County, CO | Oil & Gas Property | Dec 2017 |
| 4053 | SITZMAN | Weld County, CO | Oil & Gas Property | May 2017 |
| 4054 | SITZMAN | Weld County, CO | Oil & Gas Property | Oct 2016 |
| 4055 | SITZMAN | Weld County, CO | Oil & Gas Property | Apr 2013 |
| 4056 | SKAER | Larimer County, CO | Oil & Gas Property | Jun 2017 |
| 4057 | SKI 3 | Rio Blanco County, CO | Oil Property | Apr 2009 |
| 4058 | SKIM | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 4059 | SKIM STATE | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 4060 | SKINNER RIDGE | Garfield County, CO | Oil & Gas Property | Feb 2024 |
| 4061 | SKR 59 | Garfield County, CO | Oil & Gas Property | Feb 2024 |
| 4062 | SKR 698 | Garfield County, CO | Oil & Gas Property | Feb 2024 |
| 4063 | SKURICH | Weld County, CO | Oil & Gas Property | Mar 2019 |
| 4064 | SKY RANCH 4-65 | Arapahoe County, CO | Oil & Gas Property | Feb 2024 |
| 4065 | SKYWAY | Weld County, CO | Oil & Gas Property | Aug 2019 |
| 4066 | SLANOVICH | Fremont County, CO | Oil Property | Oct 2022 |
| 4067 | SLATER | Weld County, CO | Oil & Gas Property | Jun 2018 |
| 4068 | SLEDGE C 9 | Weld County, CO | Oil & Gas Property | Sep 2016 |
| 4069 | SLEEPING UTE | Montezuma County, CO | Oil & Gas Property | Feb 2024 |
| 4070 | SLICK ROCK | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 4071 | SLUGGER | La Plata County, CO | Gas Property | Feb 2024 |
| 4072 | SLW GREEN STATE BB 18 | Weld County, CO | Oil & Gas Property | Jan 2021 |
| 4073 | SLW RANCH | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 4074 | SLW STATE | Weld County, CO | Oil & Gas Property | Jun 2021 |
| 4075 | SMALL | Washington County, CO | Gas Property | Feb 2024 |
| 4076 | SMALL EYED | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 4077 | SMART | Logan County, CO | Oil & Gas Property | Feb 2009 |
| 4078 | SMITH | Yuma County, CO | Oil & Gas Property | Feb 2024 |
| 4079 | SMITH | Weld County, CO | Oil & Gas Property | Sep 2016 |
| 4080 | SMITH 2 | Yuma County, CO | Gas Property | Feb 2024 |
| 4081 | SMITH FEDERAL | La Plata County, CO | Gas Property | Feb 2024 |
| 4082 | SMITH STATE LD12-7 | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 4083 | SMITH-WOLTER | La Plata County, CO | Gas Property | Feb 2024 |
| 4084 | SMITS | Weld County, CO | Oil & Gas Property | Apr 2020 |
| 4085 | SNIFF | Bent County, CO | Oil & Gas Property | Feb 2024 |
| 4086 | SNOOK | La Plata County, CO | Gas Property | Feb 2024 |
| 4087 | SNOW KING | Lincoln County, CO | Oil & Gas Property | Mar 2024 |
| 4088 | SNOWBIRD | Lincoln County, CO | Oil & Gas Property | Mar 2024 |
| 4089 | SNOWMASS | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 4090 | SNYDER | Garfield County, CO | Oil & Gas Property | Feb 2024 |
| 4091 | SNYDER | Garfield County, CO | Oil & Gas Property | Feb 2024 |
| 4092 | SO UTE | La Plata County, CO | Gas Property | Feb 2024 |
| 4093 | SO UTE | La Plata County, CO | Gas Property | Feb 2024 |
| 4094 | SO UTE | La Plata County, CO | Gas Property | Feb 2024 |
| 4095 | SO UTE 3 | La Plata County, CO | Gas Property | Feb 2024 |
| 4096 | SO UTE FC 34 | La Plata County, CO | Gas Property | Feb 2024 |
| 4097 | SO.UTE | La Plata County, CO | Gas Property | Feb 2024 |
| 4098 | SO.UTE FC 33-11 1 | La Plata County, CO | Gas Property | Feb 2024 |
| 4099 | SOC STATE 145 | Yuma County, CO | Oil & Gas Property | Feb 2024 |
| 4100 | SOCO 20 | Weld County, CO | Oil & Gas Property | Jul 2019 |