| 10101 | Schaefer, Gary L. | Holliday, TX 76366 | Oil & Gas Operator | Mar 2017 |
| 10102 | Schaffner, Cecil | Byers, TX 76357 | Oil & Gas Operator | Apr 2004 |
| 10103 | Schalk Oil Company, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2026 |
| 10104 | Schalk, Thomas S. | Wichita Falls, TX 76301 | Oil & Gas Operator | Aug 1995 |
| 10105 | Schenk Oil Co. | Scotland, TX 76379 | Oil Operator | Feb 2026 |
| 10106 | Scheriger Production | Graham, TX 76450 | Oil & Gas Operator | Jun 2006 |
| 10107 | Schetawee, Inc. | Hamlin, TX 79520 | Oil & Gas Operator | Mar 2008 |
| 10108 | Schievelbein, Bryan O. | Seguin, TX 78155 | Oil & Gas Operator | Feb 2026 |
| 10109 | Schiff, H. G. & Co. | Dallas, TX 75206 | Oil & Gas Operator | Jul 1993 |
| 10110 | Schkade & Bullock | San Angelo, TX 76901 | Oil & Gas Operator | Aug 2003 |
| 10111 | Schkade Bros. Operating Company | Abilene, TX 79604 | Oil & Gas Operator | Oct 2021 |
| 10112 | Schkade Exploration | San Angelo, TX 76901 | Oil & Gas Operator | Feb 2026 |
| 10113 | Schkade Production Co. | Abilene, TX 79604 | Oil & Gas Operator | Jul 2020 |
| 10114 | Schkade, Carl E. | Albany, TX 76430 | Oil & Gas Operator | Sep 2009 |
| 10115 | Schkade, Harold | Albany, TX 76430 | Oil & Gas Operator | Aug 2024 |
| 10116 | Schkade, Louis | Albany, TX 76430 | Oil & Gas Operator | Mar 2008 |
| 10117 | Schlachter Operating Corporation | Dallas, TX 75225 | Oil & Gas Operator | Feb 2026 |
| 10118 | Schlachter, David A. | Dallas, TX 75225 | Oil & Gas Operator | Apr 2015 |
| 10119 | Schlachter, David A., Estate Of | Dallas, TX 75225 | Oil & Gas Operator | Jan 2000 |
| 10120 | Schlagal, Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 2016 |
| 10121 | Schlittler, Willard | Bryson, TX 76427 | Oil & Gas Operator | Feb 2026 |
| 10122 | Schmid Properties, Inc. | Hico, TX 76457 | Oil & Gas Operator | Feb 2026 |
| 10123 | Schneider, Ernest | Rockdale, TX 76567 | Oil & Gas Operator | Dec 2014 |
| 10124 | Schreiber, Lloyd | Scotland, TX 76379 | Oil & Gas Operator | Dec 2000 |
| 10125 | Schroeder Oil Properties | Graham, TX 76450 | Oil & Gas Operator | Jul 2022 |
| 10126 | Schwab City Resources | Leggett, TX 77350 | Oil & Gas Operator | Aug 2013 |
| 10127 | Scoggins Oil & Gas Co. | Seabrook, TX 77586 | Oil & Gas Operator | Jun 2000 |
| 10128 | Scope Operating Company | Fort Worth, TX 76102 | Oil & Gas Operator | Aug 2003 |
| 10129 | Score Energy Company | Corpus Chrsti, TX 78468 | Oil & Gas Operator | Feb 2026 |
| 10130 | Scorpion Oil & Gas, LLC | Houston, TX 77036 | Oil & Gas Operator | May 2025 |
| 10131 | Scorpion Operating, Inc. | Benavides, TX 78341 | Oil Operator | Feb 2026 |
| 10132 | Scott | Cisco, TX 76437 | Oil & Gas Operator | Jul 2003 |
| 10133 | Scott Oil Company | Corsicana, TX 75110 | Oil & Gas Operator | Apr 2011 |
| 10134 | Scott Operating, Inc. | Albany, TX 76430 | Oil & Gas Operator | Feb 2026 |
| 10135 | Scott Petroleum, Inc. | Dallas, TX 75244 | Oil & Gas Operator | May 1995 |
| 10136 | Scott, Stephen | Olney, TX 76374 | Oil Operator | Oct 2011 |
| 10137 | Scott, Steve Engineering | Midland, TX 79710 | Oil & Gas Operator | Apr 2005 |
| 10138 | Scout Energy LTD Liability Co | Inez, TX 77968 | Oil & Gas Operator | Feb 2026 |
| 10139 | Scout Energy Management LLC | Dallas, TX 75240 | Oil & Gas Operator | Feb 2026 |
| 10140 | Scranton Exploration | Eastland, TX 76448 | Oil & Gas Operator | Feb 2026 |
| 10141 | Scribner, Jeff | Wichita Falls, TX 76302 | Oil & Gas Operator | Dec 2004 |
| 10142 | Scroggins, Bruce E. | Gilmer, TX 75645 | Oil & Gas Operator | Aug 2004 |
| 10143 | SCS Newton Oil LLC | Perryton, TX 79070 | Oil & Gas Operator | Feb 2026 |
| 10144 | Scully And Smith Oil Corporation | Salado, TX 76571 | Oil & Gas Operator | Feb 1995 |
| 10145 | Scully Energy Corporation | Salado, TX 76571 | Oil & Gas Operator | Mar 2012 |
| 10146 | Scully Exploration LLC | Salado, TX 76571 | Gas Operator | May 2020 |
| 10147 | Scythian, LTD. | Midland, TX 79701 | Oil & Gas Operator | Dec 2020 |
| 10148 | SD Royale Energy, Inc. | San Diego, CA 92159 | Oil & Gas Operator | Feb 2026 |
| 10149 | SDB Oil & Gas, LLC | Pasadena, TX 77502 | Oil Operator | Feb 2026 |
| 10150 | SDG Operating Company, Inc | Tyler, TX 75701 | Oil & Gas Operator | Feb 2026 |
| 10151 | SDG Resources L.P. | Montrose, CO 81402 | Oil & Gas Operator | May 2006 |
| 10152 | SDG Services LLC | Kilgore, TX 75663 | Oil Operator | Sep 2025 |
| 10153 | SDMB Resources LLC | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 10154 | SDX Resources, Inc. | Midland, TX 79704 | Oil & Gas Operator | Feb 2026 |
| 10155 | Se USA Operating, Inc. | Houston, TX 77002 | Oil & Gas Operator | Dec 2009 |
| 10156 | Sea Eagle Ford, LLC | Denver, CO 80265 | Oil & Gas Operator | Jun 2022 |
| 10157 | Sea Sand Oil Company | Fort Worth, TX 76185 | Oil & Gas Operator | Jun 1995 |
| 10158 | Seaboard Oil Company | Midland, TX 79710 | Oil & Gas Operator | Mar 2008 |
| 10159 | Seaboard Operating Co. | Midland, TX 79710 | Oil & Gas Operator | Feb 2026 |
| 10160 | Seabreeze Production Co | Hungerford, TX 77448 | Oil & Gas Operator | Feb 2026 |
| 10161 | Seaco Production | Dripping SPGS, TX 78620 | Oil & Gas Operator | Feb 2016 |
| 10162 | Seago Operating Co., L.L.C. | Abilene, TX 79608 | Oil & Gas Operator | Oct 2011 |
| 10163 | Seago Petroleum, Inc. | Abilene, TX 79606 | Oil & Gas Operator | Feb 2026 |
| 10164 | Seagull Energy E & P Inc | Houston, TX 77002 | Oil & Gas Operator | Jan 2015 |
| 10165 | Seagull Mid-South Inc | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 10166 | Seagull Midcon Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 10167 | Seagull Operating Co., Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Jan 2025 |
| 10168 | Seahawk Oil & Gas Company | Dallas, TX 75379 | Oil & Gas Operator | Aug 2007 |
| 10169 | Seal Exploration, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Dec 2006 |
| 10170 | Seale, Don R. | Electra, TX 76360 | Oil & Gas Operator | Feb 2026 |
| 10171 | Seanard Energy Company | Baton Rouge, LA 70808 | Oil & Gas Operator | Jul 2002 |
| 10172 | Searchers Exploration | Brenham, TX 77833 | Oil Operator | Feb 2026 |
| 10173 | Seashore Energy, Inc. | Boerne, TX 78006 | Oil & Gas Operator | Feb 2026 |
| 10174 | Seattle'S Best Consulting LLC | Austin, TX 78731 | Oil & Gas Operator | Feb 2026 |
| 10175 | Seay Exploration, Inc. | Midland, TX 79704 | Oil & Gas Operator | Mar 2008 |
| 10176 | Seay Oil & Gas, LTD. | Dripping SPGS, TX 78620 | Oil & Gas Operator | Apr 2013 |
| 10177 | Seco Petroleum Corp | Houston, TX 77290 | Oil & Gas Operator | Jan 1997 |
| 10178 | Seco Production Company | Midland, TX 79708 | Oil & Gas Operator | Aug 2003 |
| 10179 | Secondary Gas Recovery Inc. | Tulsa, OK 74119 | Oil & Gas Operator | Oct 1993 |
| 10180 | Secondary Oil Corp., Inc. | Austin, TX 78750 | Oil Operator | Apr 1999 |
| 10181 | Sed Energy Inc. | Midland, TX 79702 | Oil & Gas Operator | Feb 2026 |
| 10182 | Sedco Resources Inc | Kerrville, TX 78029 | Oil & Gas Operator | Feb 2026 |
| 10183 | Sedona Oil & Gas Corporation | Dallas, TX 75231 | Oil & Gas Operator | Feb 2026 |
| 10184 | Seek Energy, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2026 |
| 10185 | Seeker Oil Company II, Inc. | San Antonio, TX 78209 | Oil Operator | Jan 2016 |
| 10186 | Seeker Oil Company, Incorporated | San Antonio, TX 78209 | Oil & Gas Operator | Feb 2026 |
| 10187 | Seel-Mac Oil & Gas LLC | Richardson, TX 75080 | Oil Operator | Jul 2011 |
| 10188 | Seely Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 2026 |
| 10189 | Seelye, William L. | Plano, TX 75024 | Oil & Gas Operator | Oct 2005 |
| 10190 | Segler, Charles | Holliday, TX 76366 | Oil & Gas Operator | Mar 2008 |
| 10191 | Segrest-Ward Joint Venture | Longview, TX 75606 | Oil & Gas Operator | Jun 2001 |
| 10192 | Seguin Pump | Seguin, TX 78155 | Oil & Gas Operator | Sep 2017 |
| 10193 | Seguro Oil And Gas, LLC | Midland, TX 79702 | Oil & Gas Operator | Jul 2024 |
| 10194 | Seguro Well Service, Inc. | Gonzales, TX 78629 | Oil & Gas Operator | Feb 2026 |
| 10195 | Sei Operating, LLC | Mandeville, LA 70471 | Oil & Gas Operator | Feb 2026 |
| 10196 | Seidler Oil & Gas Operating, LLC | Alvarado, TX 76009 | Oil & Gas Operator | Feb 2026 |
| 10197 | Seiguf Oil Company, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Feb 2026 |
| 10198 | Seiran E & P Company, LLC | Friendswood, TX 77546 | Oil & Gas Operator | Feb 2026 |
| 10199 | Seisgen Exploration, Inc | Houston, TX 77024 | Gas Operator | Aug 2005 |
| 10200 | Seisma Drilling Corporation | Wichita Falls, TX 76301 | Oil Operator | Aug 2003 |