| 28001 | Spartan Oil Corporation | Abilene, TX 79601 | Oil & Gas Operator | Aug 2003 |
| 28002 | Spartan Operating Company, Inc. | Tyler, TX 75702 | Oil & Gas Operator | Feb 2013 |
| 28003 | Spartan Petroleum Corporation | Houston, TX 77079 | Oil & Gas Operator | Oct 1987 |
| 28004 | Spartan Resource MGMT Corp | Rural Valley, PA 16249-0326 | Gas Operator | Dec 2024 |
| 28005 | Spartan Resources LLC | Oklahoma City, OK 73116 | Oil & Gas Operator | Feb 2025 |
| 28006 | Spartan Royalties, LLC | | Oil Operator | Dec 2024 |
| 28007 | SPC Resources, LLC | Midland, TX 79701 | Oil & Gas Operator | Feb 2024 |
| 28008 | Spear Production Company, Inc. | Shreveport, LA 71161 | Oil Operator | Apr 2025 |
| 28009 | Spearco Oil | Electra, TX 76360 | Oil & Gas Operator | Aug 2003 |
| 28010 | Spearpoint Energy LLC | Seminole, OK 74818-1247 | Oil Operator | Jun 2015 |
| 28011 | Spears Terry | Osage, OK 74054 | Oil Operator | Oct 2024 |
| 28012 | Speartex Grain Company | Gruver, TX 79040 | Oil & Gas Operator | Apr 2025 |
| 28013 | Specht Farms | Piqua, KS 66761 | Oil Operator | Nov 2009 |
| 28014 | Specht Oil | Iola, KS 66749 | Oil Operator | Mar 1998 |
| 28015 | Special Energy Corporation | Stillwater, OK 74076 | Oil & Gas Operator | Apr 2025 |
| 28016 | Special JHR Corp | Bridgeville, PA 15017 | Oil & Gas Operator | Apr 2025 |
| 28017 | Specialized Technological Threading, Inc., | | Oil & Gas Operator | Oct 2019 |
| 28018 | Speco Oil Company | | Oil & Gas Operator | Feb 1980 |
| 28019 | Spectral Oil & Gas Corporation | Humble, TX 77338 | Oil Operator | Apr 2025 |
| 28020 | Spectrum Energy Inc | Scottsdale, AZ 85257 | Oil & Gas Operator | Oct 2003 |
| 28021 | Spectrum Field Services Inc | Tulsa, OK 74136-3400 | Oil & Gas Operator | Jan 2004 |
| 28022 | Spectrum Oil Company | Irving, TX 75063 | Oil & Gas Operator | May 2013 |
| 28023 | Spectrum Oil Corporation | Marietta, OH 45750 | Oil & Gas Operator | Dec 1993 |
| 28024 | Spectrum Opco LLC | | Oil & Gas Operator | Nov 2024 |
| 28025 | Speed James F | Ada, OK 74821-1221 | Oil & Gas Operator | Nov 2009 |
| 28026 | Speed, F. Michael, Trustee | Corpus Chrsti, TX 78473 | Oil & Gas Operator | Aug 1998 |
| 28027 | Speedy Well Service | | Oil & Gas Operator | Sep 2024 |
| 28028 | Speegle Oil And Gas Company | Longview, TX 75605 | Oil & Gas Operator | Apr 2025 |
| 28029 | Speer Kenneth G | Seminole, OK 74818-1202 | Oil & Gas Operator | Dec 2001 |
| 28030 | Speir R M Operating Company | Walters, OK 73572-3933 | Oil Operator | Jan 2025 |
| 28031 | Spellbound Energy LLC | Denver, CO 80202 | Oil & Gas Operator | Feb 2025 |
| 28032 | Speller Oil Corporation | Oklahoma City, OK 73112 | Oil & Gas Operator | Jan 2025 |
| 28033 | Spence Energy Company | Dallas, TX 75360 | Oil & Gas Operator | Apr 2025 |
| 28034 | Spence, Ralph Oil Company, Inc. | Tyler, TX 75701 | Oil & Gas Operator | Jun 2023 |
| 28035 | Spencer Enterprises Dba Hugh Spencer | Smithburg, WV 26436-0000 | Oil & Gas Operator | Dec 2021 |
| 28036 | Spencer Kevin LLC | Drumright, OK 74030-5825 | Oil & Gas Operator | Sep 2019 |
| 28037 | Spencer Oil Company | Borger, TX 79007 | Oil & Gas Operator | Jan 2025 |
| 28038 | Spencer Oil Company LLC | Bartlesville, OK 74006 | Oil Operator | Jan 2015 |
| 28039 | Spencer Petroleum Corp | Akron, OH 44319 | Oil & Gas Operator | Dec 2000 |
| 28040 | Spencer Resources Inc | Richmond, VA 23225 | Oil & Gas Operator | Dec 1993 |
| 28041 | Spencer-Cloughly Investments Inc | San Marcos, TX 78666 | Oil & Gas Operator | Aug 2002 |
| 28042 | Spenergy Corp. | Midland, TX 79701 | Oil & Gas Operator | Dec 1999 |
| 28043 | Sperry R J | Dallas, TX 75254-8647 | Oil & Gas Operator | Aug 2013 |
| 28044 | Spess Oil Company Inc | Cleveland, OK 74020-4617 | Oil & Gas Operator | Feb 2025 |
| 28045 | Spess Oil Company, A General Partnership | Cleveland, OK 74020 | Oil & Gas Operator | Dec 2024 |
| 28046 | SPH Development, LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | Nov 2022 |
| 28047 | Spheric Petroleum Inc. | Baltimore, MD 21208 | Oil & Gas Operator | Nov 2006 |
| 28048 | Spi Operations LLC | Midland, TX 79710 | Oil & Gas Operator | Jan 2013 |
| 28049 | Spicer Oil Company, Inc. | Dallas, TX 75225 | Oil & Gas Operator | Dec 2008 |
| 28050 | Spicewood Operating Company, LLC | Austin, TX 78746 | Oil & Gas Operator | Apr 2025 |
| 28051 | Spicknall Enterprises | Amarillo, TX 79124 | Oil & Gas Operator | May 1998 |
| 28052 | Spicy Daugx Operators Louisiana LLC | | Oil & Gas Operator | Nov 2024 |
| 28053 | Spike, David C. And Arlene M. | Bloomfield, NY 14469 | Gas Operator | Dec 2023 |
| 28054 | Spikes Gas & Oil | | Gas Operator | Mar 1994 |
| 28055 | Spikes, Harry | Henrietta, TX 76365 | Oil & Gas Operator | Sep 2000 |
| 28056 | Spiller Oil & Gas Company | Jacksboro, TX 76458 | Oil Operator | Apr 2025 |
| 28057 | Spiller Operating Co., Inc. | Round Rock, TX 78665 | Oil & Gas Operator | May 2015 |
| 28058 | Spiller, H. G. | San Antonio, TX 78213 | Oil & Gas Operator | Oct 1993 |
| 28059 | Spiller, J. A. Company | Austin, TX 78735 | Oil & Gas Operator | Jan 2016 |
| 28060 | Spiller, J.A. | Austin, TX 78735 | Oil & Gas Operator | Jan 2016 |
| 28061 | Spiller, Joseph A. | Austin, TX 78746 | Oil & Gas Operator | Oct 1993 |
| 28062 | Spiller, Robert S. | San Antonio, TX 78213 | Oil & Gas Operator | Oct 1995 |
| 28063 | Spillers Petroleum, Inc. | | Gas Operator | Mar 2010 |
| 28064 | Spindletop Drilling Co. | Dallas, TX 75230 | Oil & Gas Operator | Apr 2025 |
| 28065 | Spindletop Oil & | | Oil Operator | Jun 1993 |
| 28066 | Spindletop Oil & Gas Co. | Dallas, TX 75230 | Oil & Gas Operator | Apr 2025 |
| 28067 | Spines Explorati | | Oil & Gas Operator | Dec 1990 |
| 28068 | Spinnaker Exploration Co.,L.L.C. | Houston, TX 77002 | Oil & Gas Operator | Nov 2005 |
| 28069 | Spiral Energy Corp. | Midland, TX 79705 | Oil & Gas Operator | Dec 2019 |
| 28070 | Spire Asset Management LLC | Lafayette, CO 80026 | Gas Operator | Jan 2025 |
| 28071 | Spire Missouri Inc. | | Oil Operator | May 2022 |
| 28072 | Spire Oil Services LLC | | Oil & Gas Operator | Nov 2020 |
| 28073 | Spirit Energy Inc | Edmond, OK 73034 | Oil & Gas Operator | Apr 1999 |
| 28074 | Spirit Energy L.L.C. | Caddo Mills, TX 75135 | Oil & Gas Operator | Dec 2018 |
| 28075 | Spirit O&G Operating, LLC | Houston, TX 77010 | Oil & Gas Operator | Apr 2025 |
| 28076 | Spirit Petroleum Company | | Oil & Gas Operator | Apr 1999 |
| 28077 | Spitfire Energy Group LLC | Oklahoma City, OK 73114-7444 | Oil Operator | Apr 2023 |
| 28078 | Spitfire Partners, LLC | Dallas, TX 75225 | Oil Operator | Apr 2025 |
| 28079 | Spivey, R. L. | Olney, TX 76374 | Oil Operator | Jul 2005 |
| 28080 | Spivey, William | Hays, KS 67601 | Oil Operator | Jun 1993 |
| 28081 | Splawn & Splawn | Saint Louis, OK 74866-0098 | Oil & Gas Operator | Jan 2025 |
| 28082 | Splechter, Tim | Yates Center, KS 66783 | Oil Operator | Dec 2024 |
| 28083 | SPN Energy, LLC | Guston, KY 40142 | Gas Operator | Dec 2023 |
| 28084 | Spokane Operating, LLC | | Oil & Gas Operator | Dec 2024 |
| 28085 | Sponte Operating, Inc. | Dallas, TX 75313 | Oil & Gas Operator | Apr 2025 |
| 28086 | Spoonemore Brothers | Spearman, TX 79081 | Oil & Gas Operator | Nov 2019 |
| 28087 | Spooner & Marlin Expl., Inc. | | Oil & Gas Operator | Mar 1990 |
| 28088 | Spooner Petroleum Company | | Oil & Gas Operator | Jan 2025 |
| 28089 | Sportsman Oil, Inc. | Dallas, TX 75379 | Oil & Gas Operator | Nov 1998 |
| 28090 | Spotted Hawk Development, LLC | | Oil & Gas Operator | Feb 2025 |
| 28091 | Spradco, Inc. | Towanda, KS 67144 | Oil Operator | Dec 2024 |
| 28092 | Spragins Ed S | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2025 |
| 28093 | Spragins, Ed | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2025 |
| 28094 | Sprague, Gary L. | Versailles, NY 14168 | Gas Operator | Dec 2023 |
| 28095 | Spri Oil & Gas, LLC | Houston, TX 77090 | Oil & Gas Operator | Mar 2020 |
| 28096 | Spring Creek Farm And Oil, LLC | Bixby, OK 74008 | Oil Operator | Sep 2022 |
| 28097 | Spring Industries Inc | Wellington, FL 33414 | Oil & Gas Operator | Dec 2016 |
| 28098 | Spring Operating Company | Edmond, OK 73034 | Oil & Gas Operator | Feb 2025 |
| 28099 | Spring Resources, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Jul 2007 |
| 28100 | Spring Tide Petroleum Inc | Broken Arrow, OK 74011-6651 | Oil & Gas Operator | Nov 2024 |