| 26101 | Simon Oil LLC | Kaycee, WY 82639 | Oil Operator | Jan 2024 |
| 26102 | Simon Royce & Joyce | Tecumseh, OK 74873-7341 | Oil Operator | Jun 2018 |
| 26103 | Simon, W. D. Oil Co. | Kermit, TX 79745 | Oil & Gas Operator | Apr 2024 |
| 26104 | Simple Operating LLC | Cross Plains, TX 76443 | Oil Operator | Apr 2024 |
| 26105 | Simpson B T Jr | Orlando, FL 32806 | Oil & Gas Operator | Dec 1986 |
| 26106 | Simpson Bros. Oil Co. | Odessa, TX 79760 | Oil & Gas Operator | Jan 2001 |
| 26107 | Simpson Bros. Oil Co.-Odessa | Odessa, TX 79760 | Oil & Gas Operator | Jan 2001 |
| 26108 | Simpson Oil & Land Co. | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2024 |
| 26109 | Simpson Oil Company | Odessa, TX 79760 | Oil & Gas Operator | Oct 2004 |
| 26110 | Simpson Operating Services, LP | Ballinger, TX 76821 | Oil & Gas Operator | Apr 2024 |
| 26111 | Simpson Well Service, Inc. | | Oil Operator | Dec 1996 |
| 26112 | Simpson, A. E. | Electra, TX 76360 | Oil & Gas Operator | Dec 2006 |
| 26113 | Simray GP, LLC | Richardson, TX 75080 | Oil & Gas Operator | Dec 2015 |
| 26114 | Simray Oil & Gas, Inc. | Richardson, TX 75080 | Oil & Gas Operator | Sep 2003 |
| 26115 | Simray Operating Corp. | Richardson, TX 75080 | Oil & Gas Operator | Mar 2009 |
| 26116 | Simray Production Company LP | Richland, TX 75080 | Oil & Gas Operator | Dec 2010 |
| 26117 | Sims, John S. | Lawn, TX 79530 | Oil & Gas Operator | Aug 2003 |
| 26118 | Sinclair And Sinclair, LLC | El Dorado, AR 71730 | Oil & Gas Operator | Feb 2024 |
| 26119 | Sinclair Development, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2024 |
| 26120 | Sinclair Energy Corporation | Fort Worth, TX 76177 | Oil & Gas Operator | Apr 2024 |
| 26121 | Sinclair Exploration Company | Abilene, TX 79604 | Oil & Gas Operator | Nov 1998 |
| 26122 | Sinclair Oil & Gas Company | Salt Lake Cty, UT 84130 | Oil & Gas Operator | Apr 2024 |
| 26123 | Sinclair Oil Corporation | Salt Lake Cty, UT 84130 | Oil & Gas Operator | Aug 2006 |
| 26124 | Sinclair Operating Company, LLC | El Dorado, AR 71730 | Oil & Gas Operator | Mar 2024 |
| 26125 | Sinclair, J D Production | | Oil Operator | May 2014 |
| 26126 | Singer Fleischaker Oil Op. Co. | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2002 |
| 26127 | Singer Joseph B Expl Co | Oklahoma City, OK 73118-7486 | Oil & Gas Operator | Mar 1993 |
| 26128 | Singer Oil Co LLC | Hennessey, OK 73742-0307 | Oil & Gas Operator | Feb 2024 |
| 26129 | Singer Oil Company | Oklahoma City, OK 73148 | Oil & Gas Operator | Jan 2024 |
| 26130 | Singer-Fleischaker Oil Co Inc | | Oil & Gas Operator | Jul 1987 |
| 26131 | Singer-Fleischaker,Dillon | | Oil & Gas Operator | Aug 1979 |
| 26132 | Single Barrel Oil And Gas LLC | Granbury, TX 76048 | Oil & Gas Operator | Apr 2024 |
| 26133 | Singleton Investments, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Oct 2012 |
| 26134 | Singletree Resources Inc | | Oil & Gas Operator | Aug 2014 |
| 26135 | Sink Hole, Inc. | Levelland, TX 79336 | Oil & Gas Operator | Dec 2000 |
| 26136 | Sinkhole Solutions, LLC | Bowling Green, KY 42103 | Oil Operator | Dec 2021 |
| 26137 | Sinow, G. S. | Pampa, TX 79066 | Oil & Gas Operator | Oct 1995 |
| 26138 | Siosi Oil & Gas Company | Tulsa, OK 74170-2163 | Oil & Gas Operator | Nov 2013 |
| 26139 | Sioux Gas Company | | Oil & Gas Operator | Dec 2021 |
| 26140 | Sip'S Oil & Gas Inc | Yukon, OK 73099 | Oil & Gas Operator | Apr 2024 |
| 26141 | Sipple Oil Co | Beattyville, KY 41311 | Oil Operator | Dec 2012 |
| 26142 | Sirena Holdings LLC Series 1 | Moran, TX 76464 | Oil & Gas Operator | Apr 2024 |
| 26143 | Sirius Energy Corp. | Abilene, TX 79606 | Oil Operator | Dec 2009 |
| 26144 | Siroco Operating Co., Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2010 |
| 26145 | Siroky Oil Management | Pratt, KS 67124 | Oil & Gas Operator | Dec 2023 |
| 26146 | Sissom Oil | Holliday, TX 76366 | Oil & Gas Operator | Mar 2008 |
| 26147 | Sissom Oil Field Services, LLC | Wichita Falls, TX 76308 | Oil Operator | Apr 2024 |
| 26148 | Sisters Of St. Joseph | Clarence, NY 14031 | Gas Operator | Dec 2022 |
| 26149 | Sisters Operating Company | Victoria, TX 77904 | Oil & Gas Operator | Nov 2010 |
| 26150 | Sitco Inc | Yukon, OK 73099 | Oil & Gas Operator | Jul 1995 |
| 26151 | Sitton, Ronnie Incorporated | Graford, TX 76449 | Oil & Gas Operator | Feb 2020 |
| 26152 | Situs Oil & Gas, LLC | Corpus Chrsti, TX 78414 | Oil Operator | Apr 2024 |
| 26153 | Sitwell, Inc. | | Oil Operator | May 2022 |
| 26154 | Sivad Energy No 4 | Akron, NY 14001 | Gas Operator | Dec 2022 |
| 26155 | Siven Crude Oil Company | Lomita, CA 90717 | Oil & Gas Operator | Apr 2018 |
| 26156 | Six "E" Trading Company | Allen, OK 74825-0346 | Oil & Gas Operator | Sep 2020 |
| 26157 | Six Bar Oil LLC | Pine Haven, WY 82721 | Oil Operator | Feb 2024 |
| 26158 | Six Oil Producers | Abilene, TX 79601 | Oil & Gas Operator | Sep 2002 |
| 26159 | Six-D Exploration, LLC | Hutchinson, KS 67502 | Oil Operator | Aug 2023 |
| 26160 | Six-S Properties, Inc. | Austin, TX 78767 | Oil & Gas Operator | Apr 2024 |
| 26161 | Sixess Energy, LLC | Midland, TX 79702 | Oil & Gas Operator | Apr 2024 |
| 26162 | Sizemore, James | Hardin, TX 77561 | Oil & Gas Operator | Jun 2003 |
| 26163 | SJ Energy, LLC | Englewood, CO 80112 | Oil & Gas Operator | Feb 2019 |
| 26164 | SJ Ok Oil Company | Dallas, TX 75206-9925 | Oil & Gas Operator | Jan 2024 |
| 26165 | SJM Inc | Tulsa, OK 74133-1757 | Gas Operator | Apr 2006 |
| 26166 | SJM Oil LLC | | Oil & Gas Operator | Dec 2009 |
| 26167 | Sju Holdings LLC | | Oil & Gas Operator | Jan 2024 |
| 26168 | SK Nemaha LLC | | Oil & Gas Operator | Feb 2021 |
| 26169 | SK Opr Inc | Cabot, PA 16023-1250 | Gas Operator | Dec 2023 |
| 26170 | SK Plymouth LLC | | Oil & Gas Operator | Jan 2024 |
| 26171 | Skaar, K. M. Oil & Gas Co. | Midland, TX 79710 | Oil & Gas Operator | Apr 2024 |
| 26172 | Skaer Properties LTD Partnership | | Oil & Gas Operator | Jun 2013 |
| 26173 | Skeet Oil Production LLC | | Oil Operator | Feb 2024 |
| 26174 | Skelly Oil Co | | Oil & Gas Operator | Mar 2005 |
| 26175 | Skelton Operating Co., Inc. | | Oil & Gas Operator | Aug 1980 |
| 26176 | Skelton, D.W. | | Oil Operator | Dec 1952 |
| 26177 | Skewes Operating Company | Bluefield, VA 24605 | Oil & Gas Operator | Apr 2024 |
| 26178 | Skidgel Enterprises Inc | Rawlins, WY 82301 | Oil & Gas Operator | Sep 2018 |
| 26179 | Skidmore Energy,Inc. | Salado, TX 76571 | Oil & Gas Operator | Jun 1999 |
| 26180 | Skidmore Exploration, Inc. | Dallas, TX 75219 | Oil & Gas Operator | Jul 1997 |
| 26181 | Skidmore, James E. | Nocona, TX 76255 | Oil & Gas Operator | Nov 2008 |
| 26182 | Skinner Cattle, Inc. | Nocona, TX 76255 | Oil Operator | Apr 2024 |
| 26183 | Skinner Corporation | | Oil Operator | Apr 1985 |
| 26184 | Skinner Energy Management, Inc. | Shreveport, LA 71135 | Oil & Gas Operator | Jan 2011 |
| 26185 | Skinner Oil & Gas LLC | Gillette, WY 82717 | Oil & Gas Operator | Jan 2024 |
| 26186 | Skinner'S Resources & Expl Inc | | Oil & Gas Operator | Jun 2007 |
| 26187 | Skinner, Robert V. | Spearman, TX 79081 | Oil & Gas Operator | Aug 2008 |
| 26188 | Skinner, W. E. | Wichita Falls, TX 76301 | Oil & Gas Operator | Apr 2024 |
| 26189 | Skinnergy Co. | Spearman, TX 79081 | Oil & Gas Operator | Apr 2024 |
| 26190 | Skip'S Oilfield Service | Pawhuska, OK 74056 | Oil & Gas Operator | Jan 2006 |
| 26191 | Skipworth, Joseph D | | Oil Operator | Dec 2021 |
| 26192 | SKKM Oil Company | | Oil Operator | Dec 1992 |
| 26193 | Sklar & Phillips - Harry Hurt | | Oil & Gas Operator | Jul 1986 |
| 26194 | Sklar & Phillips Oil Co. | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2000 |
| 26195 | Sklar & Phillips Oil Co.-Entex | | Oil & Gas Operator | Aug 1978 |
| 26196 | Sklar &Phillips-Great Southern | | Oil & Gas Operator | Aug 1980 |
| 26197 | Sklar Exploration Company LLC | Shreveport, LA 71101 | Oil & Gas Operator | Apr 2024 |
| 26198 | Sklar-Tex L.L.C. | Shreveport, LA 71101 | Oil & Gas Operator | Apr 2001 |
| 26199 | Skora, James B. | Lawtons, NY 14091 | Gas Operator | Dec 2022 |
| 26200 | Skrivanos Engineering, Inc. | Shreveport, LA 71164 | Oil & Gas Operator | Dec 2011 |