| 2001 | SANDAU | Weld County, CO | Oil & Gas Property | May 2026 |
| 2002 | SANDAU & BARTELS 25-1 | Weld County, CO | Oil & Gas Property | Apr 2024 |
| 2003 | SANDAU STATE K25-62-1HNL | Weld County, CO | Oil & Gas Property | May 2026 |
| 2004 | SANDIN 24 | Weld County, CO | Oil & Gas Property | May 2026 |
| 2005 | SANFORD | Weld County, CO | Oil & Gas Property | May 2026 |
| 2006 | SAPPHIRE | Weld County, CO | Oil & Gas Property | May 2026 |
| 2007 | SAPPINGTON 22 | Weld County, CO | Oil & Gas Property | May 2026 |
| 2008 | SARCHET | Weld County, CO | Oil & Gas Property | Oct 2023 |
| 2009 | SARCHET | Weld County, CO | Oil & Gas Property | Apr 2017 |
| 2010 | SARCHET | Weld County, CO | Oil & Gas Property | Apr 2017 |
| 2011 | SARCHET | Weld County, CO | Oil & Gas Property | May 2026 |
| 2012 | SARCHET | Weld County, CO | Oil & Gas Property | May 2026 |
| 2013 | SARGENT | Weld County, CO | Oil & Gas Property | Nov 2019 |
| 2014 | SATER | Weld County, CO | Oil & Gas Property | May 2026 |
| 2015 | SATER | Weld County, CO | Oil & Gas Property | May 2026 |
| 2016 | SAUER | Weld County, CO | Oil & Gas Property | May 2026 |
| 2017 | SAUER | Weld County, CO | Oil & Gas Property | Aug 2018 |
| 2018 | SAULCY | Weld County, CO | Oil & Gas Property | May 2026 |
| 2019 | SAWDEY | Weld County, CO | Oil & Gas Property | Oct 2023 |
| 2020 | SAWYER | Weld County, CO | Oil & Gas Property | May 2018 |
| 2021 | SBJ 13 | Weld County, CO | Oil & Gas Property | May 2026 |
| 2022 | SCARECROW FEDERAL LG04-7 | Weld County, CO | Oil & Gas Property | May 2026 |
| 2023 | SCHAEFER | Weld County, CO | Oil & Gas Property | Jun 2021 |
| 2024 | SCHAEFER | Weld County, CO | Oil & Gas Property | Apr 2017 |
| 2025 | SCHAEFER 10 | Weld County, CO | Oil & Gas Property | May 2024 |
| 2026 | SCHAFER | Weld County, CO | Oil & Gas Property | May 2026 |
| 2027 | SCHANK | Weld County, CO | Oil & Gas Property | May 2026 |
| 2028 | SCHAUMBERG 1 | Weld County, CO | Oil & Gas Property | May 2026 |
| 2029 | SCHEIDT STATE | Weld County, CO | Oil & Gas Property | Apr 2026 |
| 2030 | SCHISSLER | Weld County, CO | Oil & Gas Property | Dec 2017 |
| 2031 | SCHLAGEL | Weld County, CO | Oil & Gas Property | May 2026 |
| 2032 | SCHLAGEL | Weld County, CO | Oil & Gas Property | Oct 2021 |
| 2033 | SCHLAGEL | Weld County, CO | Oil & Gas Property | Jul 2018 |
| 2034 | SCHLOTTHAUER | Weld County, CO | Oil & Gas Property | May 2026 |
| 2035 | SCHMERGE | Weld County, CO | Oil & Gas Property | May 2026 |
| 2036 | SCHMIDT | Weld County, CO | Oil & Gas Property | May 2026 |
| 2037 | SCHMIER | Weld County, CO | Oil & Gas Property | Jun 2020 |
| 2038 | SCHMIER | Weld County, CO | Oil & Gas Property | May 2019 |
| 2039 | SCHMUNK | Weld County, CO | Oil & Gas Property | Sep 2023 |
| 2040 | SCHNEIDER | Weld County, CO | Oil & Gas Property | Jan 2019 |
| 2041 | SCHNEIDER | Weld County, CO | Oil & Gas Property | May 2026 |
| 2042 | SCHNEIDER | Weld County, CO | Oil & Gas Property | Jan 2012 |
| 2043 | SCHNEIDER | Weld County, CO | Oil & Gas Property | Apr 2021 |
| 2044 | SCHNEIDER | Weld County, CO | Oil & Gas Property | May 2026 |
| 2045 | SCHNEIDER | Weld County, CO | Oil & Gas Property | May 2026 |
| 2046 | SCHNEIDER 19 | Weld County, CO | Oil & Gas Property | May 2026 |
| 2047 | SCHOLFIELD | Weld County, CO | Oil & Gas Property | Apr 2024 |
| 2048 | SCHOMBER | Weld County, CO | Oil & Gas Property | May 2026 |
| 2049 | SCHOTT B 33 | Weld County, CO | Oil & Gas Property | Jun 2012 |
| 2050 | SCHRUTE | Weld County, CO | Oil & Gas Property | May 2026 |
| 2051 | SCHRUTE FARMS 9 | Weld County, CO | Oil & Gas Property | May 2026 |
| 2052 | SCHWAB 26 | Weld County, CO | Oil & Gas Property | Oct 2019 |
| 2053 | SCOOTER | Weld County, CO | Oil & Gas Property | Nov 2023 |
| 2054 | SCOTT | Weld County, CO | Oil & Gas Property | May 2026 |
| 2055 | SCOTT N27 | Weld County, CO | Oil & Gas Property | Apr 2017 |
| 2056 | SCOTTSDALE | Weld County, CO | Oil & Gas Property | May 2026 |
| 2057 | SEATON | Weld County, CO | Oil & Gas Property | Dec 2018 |
| 2058 | SEBASTYEN PC 023-63HC | Weld County, CO | Oil & Gas Property | May 2026 |
| 2059 | SEC FOUR | Weld County, CO | Oil & Gas Property | Apr 2019 |
| 2060 | SEELE | Weld County, CO | Oil & Gas Property | Dec 2020 |
| 2061 | SEELEY | Weld County, CO | Oil & Gas Property | May 2026 |
| 2062 | SEELEY FEDERAL 108 | Weld County, CO | Oil & Gas Property | May 2026 |
| 2063 | SEGAL | Weld County, CO | Oil & Gas Property | Apr 2026 |
| 2064 | SEIFRIED | Weld County, CO | Oil & Gas Property | Jun 2008 |
| 2065 | SEKICH | Weld County, CO | Oil & Gas Property | Jul 2021 |
| 2066 | SEKICH STATE | Weld County, CO | Oil & Gas Property | May 2026 |
| 2067 | SENA 15-2 | Weld County, CO | Oil & Gas Property | Jan 2018 |
| 2068 | SENECA E 15-72-1H | Weld County, CO | Oil & Gas Property | May 2026 |
| 2069 | SEVENTY HOLES | Weld County, CO | Oil & Gas Property | May 2026 |
| 2070 | SEYFRIED | Weld County, CO | Oil & Gas Property | May 2026 |
| 2071 | SEYLER | Weld County, CO | Oil & Gas Property | May 2026 |
| 2072 | SHABLE | Weld County, CO | Oil & Gas Property | May 2024 |
| 2073 | SHABLE | Weld County, CO | Oil & Gas Property | May 2026 |
| 2074 | SHABLE | Weld County, CO | Oil & Gas Property | May 2026 |
| 2075 | SHABLE | Weld County, CO | Oil & Gas Property | Jul 2017 |
| 2076 | SHABLE | Weld County, CO | Oil & Gas Property | May 2026 |
| 2077 | SHABLE USX | Weld County, CO | Oil & Gas Property | Mar 2026 |
| 2078 | SHADOW | Weld County, CO | Oil & Gas Property | May 2026 |
| 2079 | SHAFER | Weld County, CO | Oil & Gas Property | Nov 2019 |
| 2080 | SHAFTO J27 | Weld County, CO | Oil & Gas Property | Aug 2018 |
| 2081 | SHAKE 11 | Weld County, CO | Oil & Gas Property | May 2026 |
| 2082 | SHAKLEE | Weld County, CO | Oil & Gas Property | Jun 2019 |
| 2083 | SHALLOT 1930 | Weld County, CO | Oil & Gas Property | May 2026 |
| 2084 | SHANNON 14 | Weld County, CO | Oil & Gas Property | Sep 2016 |
| 2085 | SHARKEY | Weld County, CO | Oil & Gas Property | Nov 2021 |
| 2086 | SHARON 21 | Weld County, CO | Oil & Gas Property | May 2026 |
| 2087 | SHARPE STATE LD02-7 | Weld County, CO | Oil & Gas Property | May 2026 |
| 2088 | SHAW 1 | Weld County, CO | Oil & Gas Property | May 2024 |
| 2089 | SHEEP | Weld County, CO | Oil & Gas Property | Feb 2020 |
| 2090 | SHELDUCK | Weld County, CO | Oil & Gas Property | May 2026 |
| 2091 | SHELEY | Weld County, CO | Oil & Gas Property | May 2026 |
| 2092 | SHELTON | Weld County, CO | Oil & Gas Property | May 2026 |
| 2093 | SHERLEY | Weld County, CO | Oil & Gas Property | Mar 2026 |
| 2094 | SHERWOOD L | Weld County, CO | Oil & Gas Property | Sep 2022 |
| 2095 | SHIVERS | Weld County, CO | Oil & Gas Property | Dec 2017 |
| 2096 | SHOEMAKER | Weld County, CO | Oil & Gas Property | Jul 2025 |
| 2097 | SHOENEMAN | Weld County, CO | Oil & Gas Property | Jul 2014 |
| 2098 | SHOVELER FED | Weld County, CO | Oil & Gas Property | May 2026 |
| 2099 | SHOVELER GOLDENEYE FED 21-16-1HN | Weld County, CO | Oil & Gas Property | May 2026 |
| 2100 | SHOVELER HUNT FED 19-24-16HN | Weld County, CO | Oil & Gas Property | May 2026 |