| 1901 | Spence Energy Company | Dallas, TX 75206 | Oil & Gas Operator | Apr 2024 |
| 1902 | Spence, Ralph Oil Company, Inc. | Tyler, TX 75701 | Oil & Gas Operator | Jun 2023 |
| 1903 | Spencer Enterprises Dba Hugh Spencer | Smithburg, WV 26436-0000 | Oil & Gas Operator | Dec 2021 |
| 1904 | Spencer Kevin LLC | Drumright, OK 74030-5825 | Oil & Gas Operator | Sep 2019 |
| 1905 | Spencer Oil Company | Borger, TX 79007 | Oil & Gas Operator | Jan 2024 |
| 1906 | Spencer Oil Company LLC | Dewey, OK 74029-0416 | Oil Operator | Jan 2015 |
| 1907 | Spencer Petroleum Corp | Akron, OH 44319 | Oil & Gas Operator | Dec 2000 |
| 1908 | Spencer Resources Inc | Richmond, VA 23225 | Oil & Gas Operator | Dec 1993 |
| 1909 | Spencer-Cloughly Investments Inc | San Marcos, TX 78666 | Oil & Gas Operator | Aug 2002 |
| 1910 | Spenergy Corp. | Midland, TX 79701 | Oil & Gas Operator | Dec 1999 |
| 1911 | Sperry R J | Dallas, TX 75254-8647 | Oil & Gas Operator | Aug 2013 |
| 1912 | Spess Oil Company Inc | Cleveland, OK 74020-4617 | Oil & Gas Operator | Feb 2024 |
| 1913 | Spess Oil Company, A General Partnership | Cleveland, OK 74020 | Oil & Gas Operator | Dec 2023 |
| 1914 | SPH Development, LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | Nov 2022 |
| 1915 | Spheric Petroleum Inc. | Baltimore, MD 21208 | Oil & Gas Operator | Nov 2006 |
| 1916 | Spi Operations LLC | Midland, TX 79710 | Oil & Gas Operator | Jan 2013 |
| 1917 | Spicer Oil Company, Inc. | Dallas, TX 75225 | Oil & Gas Operator | Dec 2008 |
| 1918 | Spicewood Operating Company, LLC | Austin, TX 78746 | Oil & Gas Operator | Apr 2024 |
| 1919 | Spicy Daugx Operators Louisiana LLC | | Oil & Gas Operator | Oct 2023 |
| 1920 | Spike, David C. And Arlene M. | Bloomfield, NY 14469 | Gas Operator | Dec 2022 |
| 1921 | Spikes, Harry | Henrietta, TX 76365 | Oil & Gas Operator | Sep 2000 |
| 1922 | Spiller Oil & Gas Company | Jacksboro, TX 76458 | Oil Operator | Apr 2024 |
| 1923 | Spiller Operating Co., Inc. | Round Rock, TX 78665 | Oil & Gas Operator | May 2015 |
| 1924 | Spiller, H. G. | San Antonio, TX 78213 | Oil & Gas Operator | Oct 1993 |
| 1925 | Spiller, J. A. Company | Austin, TX 78735 | Oil & Gas Operator | Jan 2016 |
| 1926 | Spiller, J.A. | Austin, TX 78735 | Oil & Gas Operator | Jan 2016 |
| 1927 | Spiller, Joseph A. | Austin, TX 78746 | Oil & Gas Operator | Oct 1993 |
| 1928 | Spiller, Robert S. | San Antonio, TX 78213 | Oil & Gas Operator | Oct 1995 |
| 1929 | Spillers Petroleum, Inc. | | Gas Operator | Mar 2010 |
| 1930 | Spindletop Drilling Co. | Dallas, TX 75230 | Oil & Gas Operator | Apr 2024 |
| 1931 | Spindletop Oil & | | Oil Operator | Jun 1993 |
| 1932 | Spindletop Oil & Gas Co. | Dallas, TX 75230 | Oil & Gas Operator | Apr 2024 |
| 1933 | Spines Explorati | | Oil & Gas Operator | Dec 1990 |
| 1934 | Spinnaker Exploration Co.,L.L.C. | Houston, TX 77002 | Oil & Gas Operator | Nov 2005 |
| 1935 | Spiral Energy Corp. | Midland, TX 79705 | Oil & Gas Operator | Dec 2019 |
| 1936 | Spire Missouri Inc. | | Oil Operator | May 2022 |
| 1937 | Spire Oil Services LLC | | Oil & Gas Operator | Nov 2020 |
| 1938 | Spirit Energy Inc | Edmond, OK 73034 | Oil & Gas Operator | Apr 1999 |
| 1939 | Spirit Energy L.L.C. | Caddo Mills, TX 75135 | Oil & Gas Operator | Dec 2018 |
| 1940 | Spirit O&G Operating, LLC | Houston, TX 77010 | Oil & Gas Operator | Apr 2024 |
| 1941 | Spirit Petroleum Company | | Oil & Gas Operator | Apr 1999 |
| 1942 | Spitfire Energy Group LLC | | Oil Operator | Apr 2023 |
| 1943 | Spitfire Partners, LLC | Dallas, TX 75225 | Oil Operator | Apr 2024 |
| 1944 | Spivey, R. L. | Olney, TX 76374 | Oil Operator | Jul 2005 |
| 1945 | Spivey, William | Hays, KS 67601 | Oil Operator | Jun 1993 |
| 1946 | Splawn & Splawn | Saint Louis, OK 74866-0098 | Oil & Gas Operator | Aug 2023 |
| 1947 | Splechter, Tim | Yates Center, KS 66783 | Oil Operator | Dec 2023 |
| 1948 | Spokane Operating, LLC | | Oil & Gas Operator | Dec 2023 |
| 1949 | Sponte Operating, Inc. | Dallas, TX 75313 | Oil & Gas Operator | Apr 2024 |
| 1950 | Spoonemore Brothers | Spearman, TX 79081 | Oil & Gas Operator | Nov 2019 |
| 1951 | Spooner & Marlin Expl., Inc. | | Oil & Gas Operator | Mar 1990 |
| 1952 | Spooner Petroleum Company | | Oil & Gas Operator | Dec 2023 |
| 1953 | Spotted Hawk Development, LLC | | Oil & Gas Operator | Feb 2024 |
| 1954 | Spradco, Inc. | Towanda, KS 67144 | Oil Operator | Dec 2023 |
| 1955 | Spragins Ed S | Wichita Falls, TX 76308-0670 | Oil & Gas Operator | Feb 2024 |
| 1956 | Spragins, Ed | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2024 |
| 1957 | Sprague, Gary L. | Versailles, NY 14168 | Gas Operator | Dec 2022 |
| 1958 | Spri Oil & Gas, LLC | Houston, TX 77090 | Oil & Gas Operator | Mar 2020 |
| 1959 | Spring Creek Farm And Oil, LLC | Bixby, OK 74008 | Oil Operator | Sep 2022 |
| 1960 | Spring Industries Inc | Wellington, FL 33414 | Oil & Gas Operator | Dec 2016 |
| 1961 | Spring Operating Company | Edmond, OK 73083-2048 | Oil & Gas Operator | Feb 2024 |
| 1962 | Spring Resources, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Jul 2007 |
| 1963 | Spring Tide Petroleum Inc | Broken Arrow, OK 74011-6651 | Oil & Gas Operator | Jan 2024 |
| 1964 | Spring Tree Management LC | Abilene, TX 79604 | Oil Operator | May 2013 |
| 1965 | Spring Valley Development Co LLC | Centennial, CO 80014 | Oil & Gas Operator | Mar 2024 |
| 1966 | Spring Valley Oil & Gas Inc | Drummond, OK 73735-0175 | Oil & Gas Operator | Feb 2024 |
| 1967 | Spring, Harry A. | Ardmore, OK 73401 | Oil Operator | Jul 2012 |
| 1968 | Springer Energy Company, LLC | Akron, OH 44313 | Oil & Gas Operator | Dec 2022 |
| 1969 | Springer, Lee A. | Independence, KS 67301 | Oil Operator | May 2014 |
| 1970 | Springfield Oil Services, Inc. | Mamaroneck, NY 10543 | Oil & Gas Operator | Apr 2024 |
| 1971 | Springs, Jesse | Luling, TX 78648 | Oil & Gas Operator | Jun 1998 |
| 1972 | Springville-Griffith Institute Central School Dist | Springville, NY 14141 | Gas Operator | Dec 2022 |
| 1973 | Sproul, C. R. Inc. | Eldorado, TX 76936 | Oil & Gas Operator | Aug 2000 |
| 1974 | Spruiell Drilling Co., Inc. | Holliday, TX 76366 | Oil & Gas Operator | Apr 2024 |
| 1975 | SPS, Inc. | Cheney, KS 67025 | Oil & Gas Operator | Dec 2023 |
| 1976 | Spur Energy | Midland, TX 79708 | Oil & Gas Operator | Mar 1996 |
| 1977 | Spur Energy Partners LLC | Houston, TX 77024 | Oil & Gas Operator | Feb 2024 |
| 1978 | Spur Operating Co. | Austin, TX 78701 | Oil & Gas Operator | Apr 2024 |
| 1979 | Spurgeon William Allan | Nowata, OK 74048-9713 | Oil Operator | Feb 2010 |
| 1980 | Spurgeon William C & Tammy D | Hominy, OK 74035 | Oil & Gas Operator | Jan 2024 |
| 1981 | Spyglass Cedar Creek, LP | | Gas Operator | Jul 2012 |
| 1982 | Spyglass Oil & Gas LLC | | Oil & Gas Operator | Dec 2023 |
| 1983 | Square Mile Energy, L.L.C. | Houston, TX 77057 | Oil & Gas Operator | Apr 2024 |
| 1984 | Square One Corporation | Giddings, TX 78942 | Oil & Gas Operator | Dec 2012 |
| 1985 | Square One Energy, Inc. | Tulsa, OK 74159 | Oil & Gas Operator | Oct 2015 |
| 1986 | Squaw Mountain Oil, LLC | Jacksboro, TX 76458 | Oil Operator | Apr 2024 |
| 1987 | Squirrel Oil & Gas Inc | Blackwell, OK 74631-0248 | Oil & Gas Operator | Mar 2022 |
| 1988 | Squyres Oil Co., Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Apr 2024 |
| 1989 | SR Production Corp. | Liberty, TX 77575 | Oil & Gas Operator | Mar 2010 |
| 1990 | Sram Oil Incorporated | Winfield, KS 67156 | Oil & Gas Operator | Aug 2005 |
| 1991 | SRG Oil Corporation | Abilene, TX 79604 | Oil & Gas Operator | Apr 1994 |
| 1992 | SRP Production Corp. | | Oil & Gas Operator | Nov 1997 |
| 1993 | SRS Properties, LLC | Whitehouse, TX 75791 | Oil & Gas Operator | Apr 2024 |
| 1994 | SRV Oil Co | Coleman, TX 76834 | Oil Operator | Apr 2024 |
| 1995 | SRW Operating LLC | Duncan, OK 73534-2087 | Oil & Gas Operator | Sep 2014 |
| 1996 | SS Operating LLC | Water Valley, TX 76958 | Oil Operator | Apr 2024 |
| 1997 | SSB Production LC | Ardmore, OK 73402-0998 | Oil & Gas Operator | Feb 2024 |
| 1998 | SSC, Inc. | Lubbock, TX 79408 | Oil & Gas Operator | Apr 2024 |
| 1999 | Ssi Energy LLC | | Oil & Gas Operator | Jul 2021 |
| 2000 | SSM Partnership-PV79 | | Oil Operator | Jun 1989 |