| 27201 | Sol Oil Co., L.C. | Crane, TX 79731 | Oil Operator | Jul 2025 |
| 27202 | Sola Oil Company, Inc. | | Oil & Gas Operator | Aug 1991 |
| 27203 | Sola Operating, LLC | Trout, LA 71371 | Oil Operator | Jul 2025 |
| 27204 | Solano Gas Processing, Inc. | Austin, TX 78759 | Oil & Gas Operator | Aug 1998 |
| 27205 | Solar Exploration TX LLC | Tulsa, OK 74133 | Oil Operator | Dec 2018 |
| 27206 | Solar Petroleum Inc | | Oil Operator | May 1983 |
| 27207 | Solar Sportsystems, Inc. | East Aurora, NY 14052 | Gas Operator | Dec 2024 |
| 27208 | Solatex | | Oil & Gas Operator | Oct 1978 |
| 27209 | Solatex Resources, LTD | Houston, TX 77257 | Oil & Gas Operator | Jul 2025 |
| 27210 | Soldier Creek Energy, LLC | Edmond, OK 73013 | Oil & Gas Operator | Jul 2025 |
| 27211 | Soldier Operating LLC | | Oil & Gas Operator | Dec 2024 |
| 27212 | Soles Larry - Fe | | Oil Operator | Nov 1986 |
| 27213 | Solid Rock Prod. | | Oil Operator | Nov 1994 |
| 27214 | Solimar Energy LLC | | Oil & Gas Operator | Apr 2025 |
| 27215 | Solis Partners, L.L.C. | Midland, TX 79707 | Oil & Gas Operator | May 2025 |
| 27216 | Sollohub Petro LLC | Von Ormy, TX 78073 | Oil Operator | Jul 2025 |
| 27217 | Solo Operating Services, LLC | Falfurrias, TX 78355 | Gas Operator | Jul 2025 |
| 27218 | Solomon Exploration Inc. | Havre, MT 59501 | Gas Operator | Apr 2025 |
| 27219 | Solomon Production Corporation | Pullman, WV 26421-0003 | Oil & Gas Operator | Dec 2021 |
| 27220 | Solutions Projects And Consulting, LLC | Houston, TX 77070 | Oil Operator | Jul 2025 |
| 27221 | Somerset Energy | | Oil Operator | Feb 1986 |
| 27222 | Somerset Energy, Inc. | Louisburg, KS 66053 | Oil Operator | Mar 2025 |
| 27223 | Somerset Oil & Gas Company | Portland, TX 78374 | Oil & Gas Operator | Dec 2006 |
| 27224 | Somerset Operating, LLC | Weatherford, TX 76086 | Gas Operator | Jul 2025 |
| 27225 | Somex Energy Company | San Antonio, TX 78230 | Oil & Gas Operator | Mar 2002 |
| 27226 | Sommer Oil LLC | Richmond, KS 66080 | Oil Operator | Mar 2025 |
| 27227 | Somoco Inc | | Oil & Gas Operator | Apr 2025 |
| 27228 | Somont Oil Co., Inc. | Spring, TX 77379 | Oil & Gas Operator | May 2025 |
| 27229 | Son-Dad Oil & Gas | | Oil & Gas Operator | Dec 1994 |
| 27230 | Sonat Exploration Co. | Houston, TX 77251 | Oil & Gas Operator | Dec 2021 |
| 27231 | Sonat Exploration Co. - Houston | Houston, TX 77251 | Oil & Gas Operator | Dec 1999 |
| 27232 | Sonat Exploration Co. - Midland | Houston, TX 77251 | Oil & Gas Operator | Mar 1999 |
| 27233 | Sonat Exploration Company -Tyler | Houston, TX 77251 | Oil & Gas Operator | Dec 1999 |
| 27234 | Sonat Exploration Company-MCR | Houston, TX 77251 | Oil & Gas Operator | Dec 1999 |
| 27235 | Sonat Exploration Gom Inc. | Houston, TX 77251 | Oil & Gas Operator | Dec 1999 |
| 27236 | Sonat Raton, L.L.C. | | Gas Operator | Sep 2005 |
| 27237 | Sonata Oil & Gas Corp Inc | Stratford, OK 74812 | Oil & Gas Operator | Apr 2014 |
| 27238 | Sonerra Resources Corporation | Nacogdoches, TX 75963 | Oil & Gas Operator | Jul 2025 |
| 27239 | Song Production Company | Lindsay, OK 73052-0369 | Oil & Gas Operator | Jun 2015 |
| 27240 | Songer Harriett R | Brookville, PA 15825-5367 | Oil & Gas Operator | Dec 2010 |
| 27241 | Sonkar, Inc. | Sunburst, MT 59482 | Oil Operator | May 2025 |
| 27242 | Sonny King | | Oil & Gas Operator | Jan 2025 |
| 27243 | Sonny King Production | | Oil & Gas Operator | Jan 2025 |
| 27244 | Sonny'S Tank Trucks Inc | Ratliff City, OK 73481 | Oil Operator | May 2025 |
| 27245 | Sonoble Operating, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Jun 2003 |
| 27246 | Sonoma Energy Corporation | Park City, UT 84068 | Oil & Gas Operator | Feb 2010 |
| 27247 | Sonoma Resources LLC | Andover, KS 67002 | Oil & Gas Operator | Mar 2025 |
| 27248 | Sonora Petroleum Corp. | Austin, TX 78734 | Oil & Gas Operator | Jul 2025 |
| 27249 | Sonora Producing, Inc. | | Oil & Gas Operator | May 2006 |
| 27250 | Sonoran Energy Inc. | Addison, TX 75001 | Oil & Gas Operator | Jul 2025 |
| 27251 | Sonterra Energy LLC | Wichita, KS 67226 | Oil & Gas Operator | Jul 2022 |
| 27252 | Sonterra Oil & Gas, Inc. | Wichita, KS 67217 | Oil & Gas Operator | Jul 2025 |
| 27253 | Sonterra Operating, Inc. | Houston, TX 77060 | Oil & Gas Operator | Jul 2025 |
| 27254 | Sooner Acquisition Corp | Wichita, KS 67206 | Oil & Gas Operator | Sep 1993 |
| 27255 | Sooner Corporation | | Oil & Gas Operator | Oct 1990 |
| 27256 | Sooner Crude Inc | Tulsa, OK 74136-9107 | Oil & Gas Operator | Sep 2008 |
| 27257 | Sooner Drilling Inc | Shawnee, OK 74802-0037 | Oil & Gas Operator | Jan 2005 |
| 27258 | Sooner Energy LLC | Norman, OK 73069 | Oil & Gas Operator | Sep 2005 |
| 27259 | Sooner Exploration & Development Co Inc | Enid, OK 73702-3525 | Oil & Gas Operator | Oct 2023 |
| 27260 | Sooner Oil & Gas LLC | Fairview, OK 73737-1806 | Oil & Gas Operator | Apr 2025 |
| 27261 | Sooner Oil & Gas Management Inc | Crescent, OK 73028 | Oil & Gas Operator | May 2025 |
| 27262 | Sooner Oilfield Services Inc | Piedmont, OK 73078-0810 | Oil & Gas Operator | May 2024 |
| 27263 | Sooner Operating Co Inc | Casper, WY 83602 | Oil Operator | Jun 2025 |
| 27264 | Sooner Pipe & Supply Corp | | Oil & Gas Operator | Nov 2004 |
| 27265 | Sooner Resources, Inc. | | Oil & Gas Operator | Mar 1987 |
| 27266 | Sooner Trend Exploration Inc | Kingfisher, OK 73750-4752 | Oil & Gas Operator | Dec 2015 |
| 27267 | Sopac Exploration Inc | Drumright, OK 74030 | Oil & Gas Operator | Jun 1993 |
| 27268 | Soper Production | | Oil & Gas Operator | Dec 2011 |
| 27269 | Sorensen, Kim A. | Abbyville, KS 67510 | Oil Operator | Mar 2025 |
| 27270 | Sorrels J R Dba Cheyenne Oil Properties | Ponca City, OK 74601 | Oil & Gas Operator | Jul 2022 |
| 27271 | Sorto, Peters God | Somerset, TX 78069 | Oil Operator | Jul 2025 |
| 27272 | Soto Inc. | Ozona, TX 76943 | Oil & Gas Operator | Aug 2020 |
| 27273 | Sotol Energy, Inc. | Magnolia, TX 77354 | Oil & Gas Operator | Apr 2025 |
| 27274 | Sotrana-Texas Corp. | | Oil & Gas Operator | Oct 1984 |
| 27275 | Sotta, Donald E. | McCune, KS 66753 | Oil Operator | Dec 2024 |
| 27276 | Soule, Gilbert A. | Madison, KS 66860 | Oil Operator | Jan 2002 |
| 27277 | Soule, Richard A. | Eureka, KS 67045 | Oil Operator | Sep 2019 |
| 27278 | Sound Energy Co Inc | Dover, OH 44622 | Oil & Gas Operator | Mar 2025 |
| 27279 | Sound Resources Corporation | | Oil & Gas Operator | Dec 2003 |
| 27280 | Sounion Petroleum Incorporated | Baltimore, MD 21218 | Oil & Gas Operator | Aug 1994 |
| 27281 | Source Energy Corp. | | Gas Operator | Aug 2022 |
| 27282 | Source Energy Midcon LLC | Highlands Ranch, CO 80129 | Oil Operator | Jul 2015 |
| 27283 | Source Petroleum | Wichita, KS 67202 | Oil & Gas Operator | Oct 1993 |
| 27284 | Source Petroleum Inc. | San Antonio, TX 78265 | Oil & Gas Operator | Jul 2025 |
| 27285 | Sourcegas Energy Services Co | Golden, CO 80401 | Gas Operator | Jun 2015 |
| 27286 | Sours Thomas J | Sharon Center, OH 44274 | Oil & Gas Operator | Dec 2022 |
| 27287 | South Bay Oil Corporation | Wichita, KS 67202 | Oil Operator | Dec 2019 |
| 27288 | South Bay Resources, L.L.C. | San Antonio, TX 78209 | Oil & Gas Operator | Jul 2025 |
| 27289 | South Burbank Petroleum Corporation | Midland, TX 79707-9027 | Oil Operator | Feb 2010 |
| 27290 | South Carlton Operating Company, LLC | Natchez, MS 39121 | Oil Operator | Feb 2025 |
| 27291 | South Central Oil And Gas | | Oil & Gas Operator | Feb 2014 |
| 27292 | South Central Petroleum, Inc. | | Oil & Gas Operator | Dec 1988 |
| 27293 | South Central Texas Oil & Gas Co | Houston, TX 77060 | Oil & Gas Operator | Jul 2025 |
| 27294 | South Coast Oil Corporation | Boulder, CO 80302 | Oil & Gas Operator | Oct 2015 |
| 27295 | South Coast Oil, Inc. | | Oil & Gas Operator | Jul 1989 |
| 27296 | South Florida Investment Company | Pampa, TX 79066 | Oil & Gas Operator | Jun 1997 |
| 27297 | South Fork Energy, LLC - (Ca) | | Oil Operator | Dec 2021 |
| 27298 | South Fork Ranch | | Oil & Gas Operator | Feb 2013 |
| 27299 | South Forty Energy, Inc. | Giddings, TX 78942 | Oil & Gas Operator | Oct 1993 |
| 27300 | South Forty, The, Inc. | Laverne, OK 73848 | Oil & Gas Operator | Mar 2015 |