| 10201 | Smith Oil Company | Smackover, AR 71762 | Oil Operator | Dec 2024 |
| 10202 | Smith Operating & Management Co. | Shreveport, LA 71161 | Oil & Gas Operator | Feb 2005 |
| 10203 | Smith Operating And MGMT Co. | Shreveport, LA 71161 | Oil & Gas Operator | Jun 2023 |
| 10204 | Smith Petroleum Company | Spring, TX 77389 | Oil & Gas Operator | Jul 2025 |
| 10205 | Smith Pipe Of Abilene | Abilene, TX 79608 | Oil & Gas Operator | Jul 2025 |
| 10206 | Smith Production Co. | Wichita Falls, TX 76308 | Oil & Gas Operator | Jul 2025 |
| 10207 | Smith Production Inc. | The Woodlands, TX 77381 | Oil & Gas Operator | Jul 2025 |
| 10208 | Smith Resources, Inc. | Marshall, TX 75671 | Oil & Gas Operator | Jul 2025 |
| 10209 | Smith Resources, L.L.C. | Marshall, TX 75671 | Oil & Gas Operator | Jul 2025 |
| 10210 | Smith Vacuum Service | Snyder, TX 79550 | Oil & Gas Operator | Jul 2025 |
| 10211 | Smith, David | Wichita Falls, TX 76310 | Oil Operator | Jul 2025 |
| 10212 | Smith, Donnie D. | Coleman, TX 76834 | Gas Operator | Oct 2017 |
| 10213 | Smith, E. J. | Fort Worth, TX 76137 | Oil & Gas Operator | Jul 2025 |
| 10214 | Smith, E.N. III Energy Corp. | Marshall, TX 75671 | Oil & Gas Operator | Sep 2006 |
| 10215 | Smith, J.V. Oil Company | Dallas, TX 75248 | Gas Operator | Jul 2025 |
| 10216 | Smith, Joe H. | Argyle, TX 76226 | Oil & Gas Operator | Nov 1998 |
| 10217 | Smith, Joe T., Inc. | Hawley, TX 79525 | Oil & Gas Operator | Jul 2025 |
| 10218 | Smith, John A. | Midland, TX 79702 | Oil & Gas Operator | Jul 2025 |
| 10219 | Smith, L C Production | Jacksonville, TX 75766 | Oil Operator | Jul 2025 |
| 10220 | Smith, L. C. | Jacksonville, TX 75766 | Oil & Gas Operator | Jul 2025 |
| 10221 | Smith, O. Dale & Smith, A. C. | Amarillo, TX 79110 | Oil & Gas Operator | Mar 2000 |
| 10222 | Smith, R. E. Interests, Inc. | Houston, TX 77027 | Oil & Gas Operator | Mar 1998 |
| 10223 | Smith, Ted H. | Wichita Falls, TX 76310 | Oil & Gas Operator | Sep 1998 |
| 10224 | Smith, W. Don | Breckenridge, TX 76424 | Oil & Gas Operator | Aug 2001 |
| 10225 | Smith, W.T. | Panhandle, TX 79068 | Oil & Gas Operator | Nov 2005 |
| 10226 | SMR Natural Gas Ventures Inc | Oklahoma City, OK 73112 | Oil & Gas Operator | Jan 1999 |
| 10227 | Smulcer, Jimmy A. | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2002 |
| 10228 | Smyth Oil Corporation | Houston, TX 77002 | Oil & Gas Operator | Oct 2003 |
| 10229 | Smyth Oil LLC | Houston, TX 77002 | Oil & Gas Operator | Jul 2025 |
| 10230 | SN Ef Maverick, LLC | Houston, TX 77002 | Oil & Gas Operator | Aug 2023 |
| 10231 | SN Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | May 2023 |
| 10232 | Snappy Services, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Jul 2025 |
| 10233 | SND Operating, L.L.C. | Kilgore, TX 75663 | Oil & Gas Operator | Jul 2025 |
| 10234 | Snow Oil & Gas Inc. | Andrews, TX 79714 | Oil & Gas Operator | Jul 2025 |
| 10235 | Snow Oil Company | Nocona, TX 76255 | Oil Operator | Jul 2025 |
| 10236 | Snow Operating Co., Inc. | Haltom City, TX 76117 | Oil & Gas Operator | Feb 2024 |
| 10237 | SNR Operating, LLC | Nichols Hill, OK 73116 | Oil & Gas Operator | Jul 2025 |
| 10238 | Snuggs Oil Company | Gainesville, TX 76240 | Oil & Gas Operator | Jan 2024 |
| 10239 | SNW Operating Company | Borger, TX 79008 | Oil & Gas Operator | Jul 2025 |
| 10240 | Snyder Drilling Corp. | Albany, TX 76430 | Oil & Gas Operator | Jul 2025 |
| 10241 | Snyder Oil Corporation | Houston, TX 77024 | Oil & Gas Operator | Mar 2008 |
| 10242 | Snyder Partners | Cody, WY 82414 | Oil & Gas Operator | May 2025 |
| 10243 | So Operating Company | Cisco, TX 76437 | Oil & Gas Operator | Jul 2025 |
| 10244 | Soco Gas Properties | Goliad, TX 77963 | Oil & Gas Operator | Jul 2025 |
| 10245 | Socorro Exploration, Inc. | Lubbock, TX 79464 | Oil & Gas Operator | Jul 2025 |
| 10246 | Sogc, Inc. | Salt Lake Cty, UT 84131 | Oil & Gas Operator | May 2025 |
| 10247 | Sogc, LLC | Salt Lake Cty, UT 84131 | Oil & Gas Operator | Jul 2025 |
| 10248 | Sogo III LLC | Midland, TX 79702 | Oil & Gas Operator | Jul 2017 |
| 10249 | Soil Energy, Inc. | Imperial, TX 79743 | Oil & Gas Operator | Jul 2025 |
| 10250 | Sojitz Energy Venture, Inc. | Houston, TX 77042 | Oil & Gas Operator | Feb 2018 |
| 10251 | Sojourner Drilling Corporation | Abilene, TX 79604 | Oil & Gas Operator | Jul 2025 |
| 10252 | Sol Oil Co., L.C. | Crane, TX 79731 | Oil Operator | Jul 2025 |
| 10253 | Sola Operating, LLC | Trout, LA 71371 | Oil Operator | Jul 2025 |
| 10254 | Solano Gas Processing, Inc. | Austin, TX 78759 | Oil & Gas Operator | Aug 1998 |
| 10255 | Solar Exploration TX LLC | Tulsa, OK 74133 | Oil Operator | Dec 2018 |
| 10256 | Solatex Resources, LTD | Houston, TX 77257 | Oil & Gas Operator | Jul 2025 |
| 10257 | Soldier Creek Energy, LLC | Edmond, OK 73013 | Oil & Gas Operator | Jul 2025 |
| 10258 | Solis Partners, L.L.C. | Midland, TX 79707 | Oil & Gas Operator | May 2025 |
| 10259 | Sollohub Petro LLC | Von Ormy, TX 78073 | Oil Operator | Jul 2025 |
| 10260 | Solo Operating Services, LLC | Falfurrias, TX 78355 | Gas Operator | Jul 2025 |
| 10261 | Solutions Projects And Consulting, LLC | Houston, TX 77070 | Oil Operator | Jul 2025 |
| 10262 | Somerset Oil & Gas Company | Portland, TX 78374 | Oil & Gas Operator | Dec 2006 |
| 10263 | Somerset Operating, LLC | Weatherford, TX 76086 | Gas Operator | Jul 2025 |
| 10264 | Somex Energy Company | San Antonio, TX 78230 | Oil & Gas Operator | Mar 2002 |
| 10265 | Somont Oil Co., Inc. | Spring, TX 77379 | Oil & Gas Operator | May 2025 |
| 10266 | Sonat Exploration Co. | Houston, TX 77251 | Oil & Gas Operator | Dec 2021 |
| 10267 | Sonat Exploration Co. - Houston | Houston, TX 77251 | Oil & Gas Operator | Dec 1999 |
| 10268 | Sonat Exploration Co. - Midland | Houston, TX 77251 | Oil & Gas Operator | Mar 1999 |
| 10269 | Sonat Exploration Company -Tyler | Houston, TX 77251 | Oil & Gas Operator | Dec 1999 |
| 10270 | Sonat Exploration Company-MCR | Houston, TX 77251 | Oil & Gas Operator | Dec 1999 |
| 10271 | Sonat Exploration Gom Inc. | Houston, TX 77251 | Oil & Gas Operator | Dec 1999 |
| 10272 | Sonerra Resources Corporation | Nacogdoches, TX 75963 | Oil & Gas Operator | Jul 2025 |
| 10273 | Sonoble Operating, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Jun 2003 |
| 10274 | Sonora Petroleum Corp. | Austin, TX 78734 | Oil & Gas Operator | Jul 2025 |
| 10275 | Sonoran Energy Inc. | Addison, TX 75001 | Oil & Gas Operator | Jul 2025 |
| 10276 | Sonterra Oil & Gas, Inc. | Wichita, KS 67217 | Oil & Gas Operator | Jul 2025 |
| 10277 | Sonterra Operating, Inc. | Houston, TX 77060 | Oil & Gas Operator | Jul 2025 |
| 10278 | Sorto, Peters God | Somerset, TX 78069 | Oil Operator | Jul 2025 |
| 10279 | Soto Inc. | Ozona, TX 76943 | Oil & Gas Operator | Aug 2020 |
| 10280 | Sotol Energy, Inc. | Magnolia, TX 77354 | Oil & Gas Operator | Apr 2025 |
| 10281 | Sounion Petroleum Incorporated | Baltimore, MD 21218 | Oil & Gas Operator | Aug 1994 |
| 10282 | Source Petroleum Inc. | San Antonio, TX 78265 | Oil & Gas Operator | Jul 2025 |
| 10283 | South Bay Resources, L.L.C. | San Antonio, TX 78209 | Oil & Gas Operator | Jul 2025 |
| 10284 | South Central Texas Oil & Gas Co | Houston, TX 77060 | Oil & Gas Operator | Jul 2025 |
| 10285 | South Florida Investment Company | Pampa, TX 79066 | Oil & Gas Operator | Jun 1997 |
| 10286 | South Forty Energy, Inc. | Giddings, TX 78942 | Oil & Gas Operator | Oct 1993 |
| 10287 | South Houston Production Company | Muenster, TX 76252 | Oil & Gas Operator | Jul 2025 |
| 10288 | South Leeville, LLC | Houston, TX 77069 | Oil & Gas Operator | Oct 2022 |
| 10289 | South Loop Operating, L.C. | San Antonio, TX 78279 | Oil & Gas Operator | Apr 2009 |
| 10290 | South Oil, Inc. | Houston, TX 77057 | Oil & Gas Operator | Nov 2018 |
| 10291 | South Sam Operating Company, LLC | Lakehills, TX 78063 | Oil Operator | Jul 2025 |
| 10292 | South Texas Drilling & Expl, Inc | San Antonio, TX 78217 | Oil & Gas Operator | Jan 1999 |
| 10293 | South Texas Energy Production | Devine, TX 78016 | Oil & Gas Operator | Dec 1996 |
| 10294 | South Texas Injection Company | Mineral, TX 78125 | Oil & Gas Operator | Dec 2016 |
| 10295 | South Texas Limited Partnership | Houston, TX 77060 | Oil & Gas Operator | Feb 1994 |
| 10296 | South Texas Operating Company | San Antonio, TX 78217 | Oil & Gas Operator | Jul 2025 |
| 10297 | South Texas SWD, Inc. | Beeville, TX 78104 | Oil & Gas Operator | Aug 2003 |
| 10298 | South West Texas Oil & Gas, Inc. | Luling, TX 78648 | Oil & Gas Operator | Feb 2000 |
| 10299 | Southcoast Production Inc | Houston, TX 77010 | Oil & Gas Operator | Jul 2025 |
| 10300 | Southcoast Resources, LLC | Fort Worth, TX 76116 | Oil & Gas Operator | Dec 2015 |