| 10201 | Soil Energy, Inc. | Imperial, TX 79743 | Oil & Gas Operator | Jun 2026 |
| 10202 | Sojitz Energy Venture, Inc. | Houston, TX 77042 | Oil & Gas Operator | Feb 2018 |
| 10203 | Sojourner Drilling Corporation | Abilene, TX 79604 | Oil & Gas Operator | Jun 2026 |
| 10204 | Sol Oil Co., L.C. | Crane, TX 79731 | Oil Operator | Jun 2026 |
| 10205 | Sola Operating, LLC | Trout, LA 71371 | Oil Operator | Jun 2026 |
| 10206 | Solano Gas Processing, Inc. | Austin, TX 78759 | Oil & Gas Operator | Aug 1998 |
| 10207 | Solar Exploration TX LLC | Tulsa, OK 74133 | Oil Operator | Dec 2018 |
| 10208 | Solatex Resources, LTD | Houston, TX 77257 | Oil & Gas Operator | Jun 2026 |
| 10209 | Soldier Creek Energy, LLC | Edmond, OK 73013 | Oil & Gas Operator | Jun 2026 |
| 10210 | Solis Partners, L.L.C. | Midland, TX 79704 | Oil & Gas Operator | Mar 2026 |
| 10211 | Sollohub Petro LLC | Von Ormy, TX 78073 | Oil Operator | Jun 2026 |
| 10212 | Solo Oil & Gas Company LLC | Laredo, TX 78045 | Oil Operator | Jun 2026 |
| 10213 | Solutions Projects And Consulting, LLC | Houston, TX 77070 | Oil Operator | Jun 2026 |
| 10214 | Somerset Oil & Gas Company | Portland, TX 78374 | Oil & Gas Operator | Dec 2006 |
| 10215 | Somerset Operating, LLC | Aledo, TX 76008 | Gas Operator | Jun 2026 |
| 10216 | Somex Energy Company | San Antonio, TX 78230 | Oil & Gas Operator | Mar 2002 |
| 10217 | Somont Oil Co., Inc. | Spring, TX 77379 | Oil & Gas Operator | Mar 2026 |
| 10218 | Sonat Exploration Co. | Houston, TX 77251 | Oil & Gas Operator | Dec 2021 |
| 10219 | Sonat Exploration Co. - Houston | Houston, TX 77251 | Oil & Gas Operator | Dec 1999 |
| 10220 | Sonat Exploration Co. - Midland | Houston, TX 77251 | Oil & Gas Operator | Mar 1999 |
| 10221 | Sonat Exploration Company -Tyler | Houston, TX 77251 | Oil & Gas Operator | Dec 1999 |
| 10222 | Sonat Exploration Company-MCR | Houston, TX 77251 | Oil & Gas Operator | Dec 1999 |
| 10223 | Sonat Exploration Gom Inc. | Houston, TX 77251 | Oil & Gas Operator | Dec 1999 |
| 10224 | Sonerra Resources Corporation | Nacogdoches, TX 75963 | Oil & Gas Operator | Jun 2026 |
| 10225 | Sonoble Operating, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Jun 2003 |
| 10226 | Sonora Petroleum Corp. | Austin, TX 78734 | Oil & Gas Operator | Jun 2026 |
| 10227 | Sonoran Energy Inc. | Addison, TX 75001 | Oil & Gas Operator | Jun 2026 |
| 10228 | Sonterra Oil & Gas, Inc. | Wichita, KS 67217 | Oil & Gas Operator | Jun 2026 |
| 10229 | Sonterra Operating, Inc. | Houston, TX 77060 | Oil & Gas Operator | Jun 2026 |
| 10230 | Soto Inc. | Ozona, TX 76943 | Oil & Gas Operator | Aug 2020 |
| 10231 | Sotol Energy, Inc. | Magnolia, TX 77354 | Oil & Gas Operator | Apr 2025 |
| 10232 | Sounion Petroleum Incorporated | Baltimore, MD 21218 | Oil & Gas Operator | Aug 1994 |
| 10233 | Source Petroleum Inc. | San Antonio, TX 78265 | Oil & Gas Operator | Jun 2026 |
| 10234 | South Bay Resources, L.L.C. | San Antonio, TX 78209 | Oil & Gas Operator | Jun 2026 |
| 10235 | South Central Texas Oil & Gas Co | Houston, TX 77060 | Oil & Gas Operator | Jun 2026 |
| 10236 | South Florida Investment Company | Pampa, TX 79066 | Oil & Gas Operator | Jun 1997 |
| 10237 | South Forty Energy, Inc. | Giddings, TX 78942 | Oil & Gas Operator | Oct 1993 |
| 10238 | South Houston Production Company | Muenster, TX 76252 | Oil & Gas Operator | Jun 2026 |
| 10239 | South Leeville, LLC | Houston, TX 77069 | Oil & Gas Operator | Oct 2022 |
| 10240 | South Loop Operating, L.C. | San Antonio, TX 78279 | Oil & Gas Operator | Apr 2009 |
| 10241 | South Oil, Inc. | Houston, TX 77057 | Oil & Gas Operator | Nov 2018 |
| 10242 | South Sam Operating Company, LLC | Lakehills, TX 78063 | Oil Operator | Jun 2026 |
| 10243 | South Texas Drilling & Expl, Inc | San Antonio, TX 78217 | Oil & Gas Operator | Jan 1999 |
| 10244 | South Texas Injection Company | Mineral, TX 78125 | Oil & Gas Operator | Dec 2016 |
| 10245 | South Texas Limited Partnership | Houston, TX 77060 | Oil & Gas Operator | Feb 1994 |
| 10246 | South Texas Operating Company | San Antonio, TX 78217 | Oil & Gas Operator | Jun 2026 |
| 10247 | South Texas SWD, Inc. | Beeville, TX 78104 | Oil & Gas Operator | Aug 2003 |
| 10248 | South West Texas Oil & Gas, Inc. | Luling, TX 78648 | Oil & Gas Operator | Feb 2000 |
| 10249 | Southcoast Production Inc | Houston, TX 77010 | Oil & Gas Operator | Jun 2026 |
| 10250 | Southcoast Resources, LLC | Fort Worth, TX 76116 | Oil & Gas Operator | Dec 2015 |
| 10251 | Southcross Operating LLC | Amarillo, TX 79114 | Oil & Gas Operator | Oct 2005 |
| 10252 | Southeastern Pipe Line Company | Tyler, TX 75711 | Oil & Gas Operator | Dec 2020 |
| 10253 | Southeastern Resources Corp. | Mansfield, TX 76063 | Oil & Gas Operator | Feb 2004 |
| 10254 | Southerland, Glenn Oil & Gas Co. | Hallsville, TX 75650 | Oil & Gas Operator | Feb 2021 |
| 10255 | Southern Alliance Oil Corp. | Grapevine, TX 76099 | Oil & Gas Operator | Jun 2026 |
| 10256 | Southern Bay Operating, L.L.C. | Houston, TX 77002 | Oil & Gas Operator | Jun 2013 |
| 10257 | Southern Crude, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Mar 2017 |
| 10258 | Southern Exploration, Inc. | Fort Worth, TX 76137 | Oil & Gas Operator | Aug 2023 |
| 10259 | Southern G Holdings, LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2007 |
| 10260 | Southern Mineral Corporation | Houston, TX 77002 | Oil & Gas Operator | Oct 2001 |
| 10261 | Southern Oil & Gas LLC | Corpus Christ, TX 78401 | Oil & Gas Operator | Jun 2026 |
| 10262 | Southern Oil Of Louisiana LLC | Madisonville, LA 70447 | Oil & Gas Operator | Jun 2026 |
| 10263 | Southern Operating, LLC | Midland, TX 79710 | Oil & Gas Operator | Jun 2026 |
| 10264 | Southern Resource Company | Corpus Christ, TX 78404 | Oil & Gas Operator | Mar 2022 |
| 10265 | Southern Royalty Inc. | Corpus Christ, TX 78411 | Oil & Gas Operator | Feb 1997 |
| 10266 | Southern Tejas Asset Group LLC | McAllen, TX 78501 | Oil & Gas Operator | Jun 2026 |
| 10267 | Southern Union Exploration Co. | Austin, TX 78701 | Oil & Gas Operator | Feb 2002 |
| 10268 | Southlake Exploration, Inc. | Southlake, TX 76092 | Oil & Gas Operator | Jun 2026 |
| 10269 | Southlake Operating LLC | Weatherford, TX 76086 | Oil & Gas Operator | Jun 2026 |
| 10270 | Southland Energy Corporation | Houston, TX 77060 | Oil & Gas Operator | Aug 2022 |
| 10271 | Southland Royalty Co.-Midland | Midland, TX 79702 | Oil & Gas Operator | Mar 1996 |
| 10272 | Southland Royalty Company | Houston, TX 77210 | Oil & Gas Operator | Sep 2011 |
| 10273 | Southridge Operating Company | San Marcos, TX 78667 | Oil & Gas Operator | Jun 2026 |
| 10274 | Southstar Energy Corporation | Ardmore, OK 73401 | Gas Operator | Aug 1990 |
| 10275 | Southstone Energy, LLC | Austin, TX 78735 | Oil Operator | Jun 2026 |
| 10276 | Southwest Energy Devel.,Inc. | Sugar Land, TX 77478 | Oil & Gas Operator | Jul 2007 |
| 10277 | Southwest Energy LP | Tulsa, OK 74136 | Oil & Gas Operator | Dec 2025 |
| 10278 | Southwest Gas Systems, Inc. | Spring, TX 77379 | Oil & Gas Operator | Jun 2026 |
| 10279 | Southwest Gathering Company | Alice, TX 78332 | Oil & Gas Operator | Jun 2026 |
| 10280 | Southwest Land & Minerals, Inc. | Corpus Chrsti, TX 78471 | Oil & Gas Operator | Aug 2003 |
| 10281 | Southwest Loop 1604, LTD. | San Antonio, TX 78209 | Oil Operator | Sep 2022 |
| 10282 | Southwest Oil & Land, Inc. | Corpus Chrsti, TX 78460 | Oil & Gas Operator | Dec 1999 |
| 10283 | Southwest Operating, Inc.-Tyler | Tyler, TX 75701 | Oil & Gas Operator | Jun 2026 |
| 10284 | Southwest Petroleum | San Antonio, TX 78253 | Oil & Gas Operator | Jun 2026 |
| 10285 | Southwest Resources, Inc. | Brenham, TX 77834 | Oil & Gas Operator | Jun 2026 |
| 10286 | Southwest Royalties, Inc. | Midland, TX 79710 | Oil & Gas Operator | Jun 2026 |
| 10287 | Southwest-Operating | Penwell, TX 79776 | Oil & Gas Operator | Jun 2026 |
| 10288 | Southwestern Electric Power Co | Dallas, TX 75266 | Oil & Gas Operator | Dec 1989 |
| 10289 | Southwestern Energy Prod Co | Houston, TX 77032 | Oil & Gas Operator | Jun 2015 |
| 10290 | Sovereign Petroleum Company, LLC | Oklahoma City, OK 73120 | Oil & Gas Operator | Jul 2013 |
| 10291 | Sozo Natural Resources LLC | Houston, TX 77056 | Oil & Gas Operator | Jun 2026 |
| 10292 | Space Production Inc. | Monahans, TX 79756 | Oil & Gas Operator | Jun 2026 |
| 10293 | Spade Energy L.L.C. | Fort Worth, TX 76177 | Oil & Gas Operator | Jun 2026 |
| 10294 | Spain Oil Company | Somerset, TX 78069 | Oil & Gas Operator | Jun 2026 |
| 10295 | Spalding Energy, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Jun 2026 |
| 10296 | Sparks, Sidney A., Trustee | Alice, TX 78332 | Oil & Gas Operator | Jun 1996 |
| 10297 | Sparta Exploration LLC | Houston, TX 77279 | Oil & Gas Operator | Jun 2026 |
| 10298 | Spartagus Corporation | Grand Saline, TX 75140 | Oil & Gas Operator | Sep 2004 |
| 10299 | Spartan Oil Corporation | Abilene, TX 79601 | Oil & Gas Operator | Aug 2003 |
| 10300 | Spartan Operating Company, Inc. | Tyler, TX 75702 | Oil & Gas Operator | Feb 2013 |