| 2001 | Spence, Ralph Oil Company, Inc. | Tyler, TX 75701 | Oil & Gas Operator | Jun 2023 |
| 2002 | Spencer Enterprises Dba Hugh Spencer | Smithburg, WV 26436-0000 | Oil & Gas Operator | Dec 2021 |
| 2003 | Spencer Kevin LLC | Drumright, OK 74030-5825 | Oil & Gas Operator | Sep 2019 |
| 2004 | Spencer Oil Company | Borger, TX 79007 | Oil & Gas Operator | Jan 2025 |
| 2005 | Spencer Oil Company LLC | Bartlesville, OK 74006 | Oil Operator | Jan 2015 |
| 2006 | Spencer Petroleum Corp | Akron, OH 44319 | Oil & Gas Operator | Dec 2000 |
| 2007 | Spencer Resources Inc | Richmond, VA 23225 | Oil & Gas Operator | Dec 1993 |
| 2008 | Spencer-Cloughly Investments Inc | San Marcos, TX 78666 | Oil & Gas Operator | Aug 2002 |
| 2009 | Spenergy Corp. | Midland, TX 79701 | Oil & Gas Operator | Dec 1999 |
| 2010 | Sperry R J | Dallas, TX 75254-8647 | Oil & Gas Operator | Aug 2013 |
| 2011 | Spess Oil Company Inc | Cleveland, OK 74020-4617 | Oil & Gas Operator | Feb 2025 |
| 2012 | Spess Oil Company, A General Partnership | Cleveland, OK 74020 | Oil & Gas Operator | Dec 2024 |
| 2013 | SPH Development, LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | Nov 2022 |
| 2014 | Spheric Petroleum Inc. | Baltimore, MD 21208 | Oil & Gas Operator | Nov 2006 |
| 2015 | Spi Operations LLC | Midland, TX 79710 | Oil & Gas Operator | Jan 2013 |
| 2016 | Spicer Oil Company, Inc. | Dallas, TX 75225 | Oil & Gas Operator | Dec 2008 |
| 2017 | Spicewood Operating Company, LLC | Austin, TX 78746 | Oil & Gas Operator | Apr 2025 |
| 2018 | Spicknall Enterprises | Amarillo, TX 79124 | Oil & Gas Operator | May 1998 |
| 2019 | Spicy Daugx Operators Louisiana LLC | | Oil & Gas Operator | Nov 2024 |
| 2020 | Spike, David C. And Arlene M. | Bloomfield, NY 14469 | Gas Operator | Dec 2023 |
| 2021 | Spikes Gas & Oil | | Gas Operator | Mar 1994 |
| 2022 | Spikes, Harry | Henrietta, TX 76365 | Oil & Gas Operator | Sep 2000 |
| 2023 | Spiller Oil & Gas Company | Jacksboro, TX 76458 | Oil Operator | Apr 2025 |
| 2024 | Spiller Operating Co., Inc. | Round Rock, TX 78665 | Oil & Gas Operator | May 2015 |
| 2025 | Spiller, H. G. | San Antonio, TX 78213 | Oil & Gas Operator | Oct 1993 |
| 2026 | Spiller, J. A. Company | Austin, TX 78735 | Oil & Gas Operator | Jan 2016 |
| 2027 | Spiller, J.A. | Austin, TX 78735 | Oil & Gas Operator | Jan 2016 |
| 2028 | Spiller, Joseph A. | Austin, TX 78746 | Oil & Gas Operator | Oct 1993 |
| 2029 | Spiller, Robert S. | San Antonio, TX 78213 | Oil & Gas Operator | Oct 1995 |
| 2030 | Spillers Petroleum, Inc. | | Gas Operator | Mar 2010 |
| 2031 | Spindletop Drilling Co. | Dallas, TX 75230 | Oil & Gas Operator | Apr 2025 |
| 2032 | Spindletop Oil & | | Oil Operator | Jun 1993 |
| 2033 | Spindletop Oil & Gas Co. | Dallas, TX 75230 | Oil & Gas Operator | Apr 2025 |
| 2034 | Spines Explorati | | Oil & Gas Operator | Dec 1990 |
| 2035 | Spinnaker Exploration Co.,L.L.C. | Houston, TX 77002 | Oil & Gas Operator | Nov 2005 |
| 2036 | Spiral Energy Corp. | Midland, TX 79705 | Oil & Gas Operator | Dec 2019 |
| 2037 | Spire Asset Management LLC | Lafayette, CO 80026 | Gas Operator | Jan 2025 |
| 2038 | Spire Missouri Inc. | | Oil Operator | May 2022 |
| 2039 | Spire Oil Services LLC | | Oil & Gas Operator | Nov 2020 |
| 2040 | Spirit Energy Inc | Edmond, OK 73034 | Oil & Gas Operator | Apr 1999 |
| 2041 | Spirit Energy L.L.C. | Caddo Mills, TX 75135 | Oil & Gas Operator | Dec 2018 |
| 2042 | Spirit O&G Operating, LLC | Houston, TX 77010 | Oil & Gas Operator | Apr 2025 |
| 2043 | Spirit Petroleum Company | | Oil & Gas Operator | Apr 1999 |
| 2044 | Spitfire Energy Group LLC | Oklahoma City, OK 73114-7444 | Oil Operator | Apr 2023 |
| 2045 | Spitfire Partners, LLC | Dallas, TX 75225 | Oil Operator | Apr 2025 |
| 2046 | Spivey, R. L. | Olney, TX 76374 | Oil Operator | Jul 2005 |
| 2047 | Spivey, William | Hays, KS 67601 | Oil Operator | Jun 1993 |
| 2048 | Splawn & Splawn | Saint Louis, OK 74866-0098 | Oil & Gas Operator | Jan 2025 |
| 2049 | Splechter, Tim | Yates Center, KS 66783 | Oil Operator | Dec 2024 |
| 2050 | SPN Energy, LLC | Guston, KY 40142 | Gas Operator | Dec 2023 |
| 2051 | Spokane Operating, LLC | | Oil & Gas Operator | Dec 2024 |
| 2052 | Sponte Operating, Inc. | Dallas, TX 75313 | Oil & Gas Operator | Apr 2025 |
| 2053 | Spoonemore Brothers | Spearman, TX 79081 | Oil & Gas Operator | Nov 2019 |
| 2054 | Spooner & Marlin Expl., Inc. | | Oil & Gas Operator | Mar 1990 |
| 2055 | Spooner Petroleum Company | | Oil & Gas Operator | Jan 2025 |
| 2056 | Sportsman Oil, Inc. | Dallas, TX 75379 | Oil & Gas Operator | Nov 1998 |
| 2057 | Spotted Hawk Development, LLC | | Oil & Gas Operator | Feb 2025 |
| 2058 | Spradco, Inc. | Towanda, KS 67144 | Oil Operator | Dec 2024 |
| 2059 | Spragins Ed S | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2025 |
| 2060 | Spragins, Ed | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2025 |
| 2061 | Sprague, Gary L. | Versailles, NY 14168 | Gas Operator | Dec 2023 |
| 2062 | Spri Oil & Gas, LLC | Houston, TX 77090 | Oil & Gas Operator | Mar 2020 |
| 2063 | Spring Creek Farm And Oil, LLC | Bixby, OK 74008 | Oil Operator | Sep 2022 |
| 2064 | Spring Industries Inc | Wellington, FL 33414 | Oil & Gas Operator | Dec 2016 |
| 2065 | Spring Operating Company | Edmond, OK 73034 | Oil & Gas Operator | Feb 2025 |
| 2066 | Spring Resources, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Jul 2007 |
| 2067 | Spring Tide Petroleum Inc | Broken Arrow, OK 74011-6651 | Oil & Gas Operator | Nov 2024 |
| 2068 | Spring Tree Management LC | Abilene, TX 79604 | Oil Operator | May 2013 |
| 2069 | Spring Valley Development Co LLC | Centennial, CO 80014 | Oil & Gas Operator | Feb 2025 |
| 2070 | Spring Valley Oil & Gas Inc | Drummond, OK 73735 | Oil & Gas Operator | Feb 2025 |
| 2071 | Spring, Harry A. | Ardmore, OK 73401 | Oil Operator | Jul 2012 |
| 2072 | Springer Energy Company, LLC | Akron, OH 44313 | Oil & Gas Operator | Dec 2023 |
| 2073 | Springer, Lee A. | Independence, KS 67301 | Oil Operator | May 2014 |
| 2074 | Springfield Oil Services, Inc. | Mamaroneck, NY 10543 | Oil & Gas Operator | Apr 2025 |
| 2075 | Springs, Jesse | Luling, TX 78648 | Oil & Gas Operator | Jun 1998 |
| 2076 | Springville-Griffith Institute Central School Dist | Springville, NY 14141 | Gas Operator | Dec 2023 |
| 2077 | Sproul, C. R. Inc. | Eldorado, TX 76936 | Oil & Gas Operator | Aug 2000 |
| 2078 | Spruiell Drilling Co., Inc. | Holliday, TX 76366 | Oil & Gas Operator | Apr 2025 |
| 2079 | SPS, Inc. | Cheney, KS 67025 | Oil & Gas Operator | Dec 2024 |
| 2080 | Spur Energy | Midland, TX 79708 | Oil & Gas Operator | Mar 1996 |
| 2081 | Spur Energy Partners LLC | Houston, TX 77024 | Oil & Gas Operator | Jan 2025 |
| 2082 | Spur Operating Co. | Austin, TX 78701 | Oil & Gas Operator | Apr 2025 |
| 2083 | Spurgeon William Allan | Nowata, OK 74048-9713 | Oil Operator | Feb 2010 |
| 2084 | Spurgeon William C & Tammy D | Hominy, OK 74035 | Oil & Gas Operator | Jan 2025 |
| 2085 | Spyglass Cedar Creek, LP | | Gas Operator | Jul 2012 |
| 2086 | Spyglass Oil & Gas LLC | | Oil & Gas Operator | Dec 2024 |
| 2087 | Square Mile Energy, L.L.C. | Houston, TX 77057 | Oil & Gas Operator | Apr 2025 |
| 2088 | Square One Corporation | Giddings, TX 78942 | Oil & Gas Operator | Dec 2012 |
| 2089 | Square One Energy, Inc. | Tulsa, OK 74159 | Oil & Gas Operator | Oct 2015 |
| 2090 | Squaw Mountain Oil, LLC | Jacksboro, TX 76458 | Oil Operator | Apr 2025 |
| 2091 | Squirrel Oil & Gas Inc | Tonkawa, OK 74653 | Oil & Gas Operator | Mar 2022 |
| 2092 | Squyres Oil Co., Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Nov 2024 |
| 2093 | SR Production Corp. | Liberty, TX 77575 | Oil & Gas Operator | Mar 2010 |
| 2094 | Sram Oil Incorporated | Winfield, KS 67156 | Oil & Gas Operator | Aug 2005 |
| 2095 | SRG Oil Corporation | Abilene, TX 79604 | Oil & Gas Operator | Apr 1994 |
| 2096 | SRP Production Corp. | | Oil & Gas Operator | Nov 1997 |
| 2097 | SRS Properties, LLC | Whitehouse, TX 75791 | Oil & Gas Operator | Apr 2025 |
| 2098 | SRV Oil Co | Coleman, TX 76834 | Oil Operator | Apr 2025 |
| 2099 | SRW Operating LLC | Duncan, OK 73534-2087 | Oil & Gas Operator | Sep 2014 |
| 2100 | SS Operating LLC | Water Valley, TX 76958 | Oil Operator | Apr 2025 |