| 10201 | Seismic Investment Group, Inc. | Houston, TX 77055 | Oil & Gas Operator | Jun 2008 |
| 10202 | Seismic Leasing Service | Denver, CO 80216 | Oil & Gas Operator | Aug 2000 |
| 10203 | Seismotech Energy, Incorporated | Plano, TX 75075 | Oil & Gas Operator | Aug 2003 |
| 10204 | Seistech Development, Inc. | Midland, TX 79701 | Oil & Gas Operator | May 2007 |
| 10205 | Seitz, Comegys & Seitz | Wichita Falls, TX 76307 | Oil & Gas Operator | Oct 1994 |
| 10206 | Seitz, J. R. & Adam | Wichita Falls, TX 76307 | Oil & Gas Operator | Mar 2008 |
| 10207 | Seitz, J. R. & Adam, LTD. | Wichita Falls, TX 76307 | Oil Operator | Feb 2026 |
| 10208 | Select Water Solutions, LLC | Gainesville, TX 76240 | Oil Operator | Nov 2025 |
| 10209 | Self Brothers | Montague, TX 76251 | Oil & Gas Operator | Feb 2026 |
| 10210 | Self, Charles D. | Jacksboro, TX 76458 | Oil & Gas Operator | Sep 2016 |
| 10211 | Self, Charles Lynn | Jacksboro, TX 76458 | Oil & Gas Operator | Feb 2026 |
| 10212 | Sellers Lease Service, Inc. | Flatonia, TX 78941 | Oil & Gas Operator | Feb 2026 |
| 10213 | Sellers' Lease Service | Flatonia, TX 78941 | Oil & Gas Operator | Jul 1994 |
| 10214 | Selous Energy, LLC | Fort Worth, TX 76109 | Oil & Gas Operator | Jul 2015 |
| 10215 | Sem Operating Company LLC | Houston, TX 77042 | Oil & Gas Operator | Feb 2026 |
| 10216 | Seminole Production Co. | Silsbee, TX 77656 | Oil & Gas Operator | Oct 2002 |
| 10217 | Semper Fidelis Oil & Gas, LLC | Allen, TX 75013 | Oil & Gas Operator | Apr 2013 |
| 10218 | Sendero Energy Inc. | Dallas, TX 75205 | Oil & Gas Operator | Feb 2026 |
| 10219 | Seneca Exploration, LLC | Wichita Falls, TX 76308 | Oil Operator | Feb 2026 |
| 10220 | Seneca Oil Company | Tulsa, OK 74121-1518 | Oil & Gas Operator | Jan 2015 |
| 10221 | Seneca Resources Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2017 |
| 10222 | Senkel, Wesley, Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 2007 |
| 10223 | Senora Resources, Inc. | Dime Box, TX 77853 | Oil & Gas Operator | Feb 2026 |
| 10224 | Sensor Oil & Gas, Inc. | Duncan, OK 73534 | Oil & Gas Operator | May 2013 |
| 10225 | Sentry Exploration, Inc. | Houston, TX 77006 | Oil & Gas Operator | Feb 2026 |
| 10226 | Sep, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 1994 |
| 10227 | Sequoia Energy Resources | Dallas, TX 75207 | Oil & Gas Operator | Feb 2026 |
| 10228 | Sequoia Fossil Fuels, Inc. | Albany, TX 76430 | Oil & Gas Operator | Feb 2026 |
| 10229 | Sequoia Management, LLC | Houston, TX 77060 | Oil & Gas Operator | Nov 2009 |
| 10230 | Sequoia Natural Gas, Inc. | Albany, TX 76430 | Oil & Gas Operator | Feb 2026 |
| 10231 | Ser E&P, Inc. | McKinney, TX 75069 | Oil & Gas Operator | Feb 2026 |
| 10232 | Serco Operating LLC | Katy, TX 77450 | Oil Operator | Feb 2026 |
| 10233 | Serendipity Exploration, Inc. | Weatherford, TX 76087 | Gas Operator | May 1997 |
| 10234 | Serna Inc. | Austin, TX 78733 | Oil Operator | Feb 2026 |
| 10235 | Serra Energy, Inc. | Hailey, ID 83333 | Oil & Gas Operator | May 2011 |
| 10236 | Service Clearing Corp | Dallas, TX 75229 | Oil & Gas Operator | Feb 2026 |
| 10237 | Service Drilling Co. | Tulsa, OK 74119 | Oil & Gas Operator | Oct 1998 |
| 10238 | Service Drilling Co., L.L.C. | Tulsa, OK 74119 | Oil & Gas Operator | Oct 2003 |
| 10239 | Service Production Company, Inc. | Santa Fe, TX 77510 | Oil & Gas Operator | May 1999 |
| 10240 | Setex Oil And Gas Company | Houston, TX 77002 | Oil & Gas Operator | Feb 2012 |
| 10241 | Setex Oil Company, L.P. | Houston, TX 77060 | Oil & Gas Operator | Jan 2000 |
| 10242 | Sev Texas Operating, LLC | Long Beach, CA 90755 | Oil & Gas Operator | Feb 2026 |
| 10243 | Seven Cross Operating, LLC | Santa Anna, TX 76878 | Oil & Gas Operator | Feb 2026 |
| 10244 | Seven Falls Company | Dallas, TX 75201 | Oil & Gas Operator | May 2008 |
| 10245 | Seven Lakes Operating LLC | Austin, TX 78746 | Oil Operator | Feb 2026 |
| 10246 | Seven Wells Oil & Gas Expl. | Abilene, TX 79601 | Oil & Gas Operator | Jun 2014 |
| 10247 | Sevenbar Resources, LLC | Hallettsville, TX 77964 | Oil & Gas Operator | Feb 2026 |
| 10248 | Seventy Oil Co. | Freer, TX 78357 | Oil & Gas Operator | Mar 2002 |
| 10249 | Sevenx, LLC | Iowa Park, TX 76367 | Oil Operator | Feb 2026 |
| 10250 | SFJV Enterprises, Inc. | Berclair, TX 78107 | Gas Operator | Aug 1998 |
| 10251 | SFM Holdings, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Jul 1995 |
| 10252 | SG Interests, Inc. | Houston, TX 77010 | Oil & Gas Operator | Jun 2007 |
| 10253 | SGB Oil LLC | Luling, TX 78648 | Oil Operator | Feb 2026 |
| 10254 | SGP Operating LLC | Dallas, TX 75205 | Oil & Gas Operator | Feb 2026 |
| 10255 | Sha Stephens, Incorporated | Weatherford, TX 76087 | Oil & Gas Operator | Apr 2006 |
| 10256 | Sha-Jam Operating Corp. | Midland, TX 79701 | Oil & Gas Operator | Feb 2026 |
| 10257 | Shack, Bill | Albany, TX 76430 | Oil & Gas Operator | Apr 2006 |
| 10258 | Shackelford Oil Co | Midland, TX 79707 | Oil & Gas Operator | Dec 2025 |
| 10259 | Shackelford,Frank Oil Properties | Midland, TX 79701 | Oil & Gas Operator | Aug 1997 |
| 10260 | Shadawn Corporation | Wichita Falls, TX 76310 | Oil & Gas Operator | Mar 2005 |
| 10261 | Shady Oil Co. | Brownwood, TX 76801 | Oil & Gas Operator | Feb 2026 |
| 10262 | Shahan, Donald Allan | Abilene, TX 79602 | Oil Operator | Feb 2026 |
| 10263 | Shaida, John H. | Wichita, KS 67226 | Oil & Gas Operator | Feb 2026 |
| 10264 | Shakespeare Oil Co Inc | Salem, IL 62881 | Oil & Gas Operator | Dec 2025 |
| 10265 | Shale Energy LLC | Jeffersonville, KY 40337 | Oil Operator | Dec 2018 |
| 10266 | Shale Hunter, LLC | Irving, TX 75039 | Oil & Gas Operator | Jan 2016 |
| 10267 | Shale Oil Co., Inc. | Liberty, TX 77575 | Oil & Gas Operator | Feb 2026 |
| 10268 | Shale Operating Co. | Dallas, TX 75356 | Oil & Gas Operator | Feb 2026 |
| 10269 | Shallow Production Oper, LLC | Austin, TX 78738 | Oil Operator | Feb 2026 |
| 10270 | Shamrock Minerals Corporation | Merkel, TX 79536 | Oil & Gas Operator | Nov 1998 |
| 10271 | Shamrock Oil Co. | Sugar Land, TX 77478 | Oil & Gas Operator | Mar 2008 |
| 10272 | Shamrock Texas Partners L.P. | San Angelo, TX 76904 | Oil & Gas Operator | Feb 2026 |
| 10273 | Shana Petroleum Company | Dallas, TX 75206 | Oil & Gas Operator | Aug 2002 |
| 10274 | Shanafelt Oil Operating, LLC | Jacksboro, TX 76458 | Oil Operator | Feb 2026 |
| 10275 | Shanafelt, Arthur | Jacksboro, TX 76458 | Oil & Gas Operator | May 2003 |
| 10276 | Shanghai Energy Corporation | Houston, TX 77027 | Oil & Gas Operator | Apr 2003 |
| 10277 | Shanks, Bob | Haskell, OK 74436 | Oil Operator | Sep 2002 |
| 10278 | Shannon Energy | Liberal, KS 67901 | Oil & Gas Operator | Feb 1999 |
| 10279 | Shappell Oil Company | Holliday, TX 76366 | Oil & Gas Operator | Sep 2012 |
| 10280 | Shappell Oil Company, L.L.C. | Harrisonburg, LA 71340 | Oil & Gas Operator | Feb 2026 |
| 10281 | Share Petroleum Corp. | Mabank, TX 75147 | Oil Operator | Feb 2026 |
| 10282 | Sharoco Corporation | Fort Worth, TX 76121 | Oil & Gas Operator | Dec 1996 |
| 10283 | Sharon Hunter Resources, Inc. | Houston, TX 77056 | Oil & Gas Operator | Sep 2012 |
| 10284 | Sharon Resources, Inc. | Houston, TX 77056 | Oil & Gas Operator | Aug 2010 |
| 10285 | Sharp Image Energy, Inc. | Big Spring, TX 79721 | Oil & Gas Operator | Feb 2026 |
| 10286 | Sharp, Cherry L | Jacksboro, TX 76458 | Oil Operator | Feb 2026 |
| 10287 | Sharp, John T. | Jacksboro, TX 76458 | Oil & Gas Operator | Jul 2014 |
| 10288 | Sharpe Energy Company | Conroe, TX 77305 | Oil & Gas Operator | Mar 2008 |
| 10289 | Shaw, Henry Jr. | Midland, TX 79702 | Oil & Gas Operator | Oct 2018 |
| 10290 | Shaw, T. G. Oil Company, LTD. | Fort Worth, TX 76113 | Oil & Gas Operator | Feb 2026 |
| 10291 | Shawnee Energy Development, Inc. | Graham, TX 76450 | Oil & Gas Operator | May 1998 |
| 10292 | Shawver & Shawver | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 10293 | Shearer Oil Company | Graham, TX 76450 | Oil & Gas Operator | May 2002 |
| 10294 | Shed Oil Company | Electra, TX 76360 | Oil Operator | Feb 2026 |
| 10295 | Sheer Energy, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Feb 2026 |
| 10296 | Sheets Exploration Co., Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Jul 2016 |
| 10297 | Sheets, P. A. | Breckenridge, TX 76424 | Oil & Gas Operator | Jun 1994 |
| 10298 | Shefts & Shefts, Inc. | Luling, TX 78648 | Oil & Gas Operator | Feb 2026 |
| 10299 | Shelby Boswell Operator, LLC | Dallas, TX 75225 | Oil & Gas Operator | Feb 2026 |
| 10300 | Shelby Operating Company | Dallas, TX 75205 | Oil & Gas Operator | Feb 2026 |