| 27301 | So & Jo, LLC | Kansas City, MO 64158 | Oil Operator | Dec 2021 |
| 27302 | So Operating Company | Cisco, TX 76437 | Oil & Gas Operator | Jun 2025 |
| 27303 | So-I , A General Partnership | Kansas City, MO 64106 | Oil & Gas Operator | Nov 2023 |
| 27304 | Soap Creek Associates, Inc. | Broomfield, CO 80020-2995 | Oil Operator | Mar 2025 |
| 27305 | Soc Resources Inc. | | Oil & Gas Operator | Dec 2024 |
| 27306 | Society Of Bros In Pa Inc | Farmington, PA 15437-0240 | Gas Operator | Dec 2024 |
| 27307 | Soco Gas Properties | Goliad, TX 77963 | Oil & Gas Operator | Jun 2025 |
| 27308 | Socorro Exploration, Inc. | Lubbock, TX 79464 | Oil & Gas Operator | Jun 2025 |
| 27309 | Socorro Pet Co | Oklahoma City, OK 73102 | Oil & Gas Operator | Jan 1995 |
| 27310 | Sogc, Inc. | Salt Lake Cty, UT 84131 | Oil & Gas Operator | Apr 2025 |
| 27311 | Sogc, LLC | Salt Lake Cty, UT 84131 | Oil & Gas Operator | Jun 2025 |
| 27312 | Sogo III LLC | Midland, TX 79702 | Oil & Gas Operator | Jul 2017 |
| 27313 | Sohio Alaska Petroleum Company | | Oil & Gas Operator | Dec 1981 |
| 27314 | Sohio Petr Co-Gulf Oil Corp | | Oil & Gas Operator | Dec 1979 |
| 27315 | Sohio Petroleum Co. | Casper, WY 82602 | Oil & Gas Operator | Apr 1986 |
| 27316 | Sohio Petroleum Co. Et Al | | Oil & Gas Operator | May 1979 |
| 27317 | Sohio-Stand Oil Prod Co | Houston, TX 77210-9928 | Oil & Gas Operator | Jan 1989 |
| 27318 | Soil Energy, Inc. | Imperial, TX 79743 | Oil & Gas Operator | Jun 2025 |
| 27319 | Sois-Osage Inc | | Oil & Gas Operator | Oct 2006 |
| 27320 | Sojitz Energy Venture, Inc. | Houston, TX 77042 | Oil & Gas Operator | Feb 2018 |
| 27321 | Sojourner Drilling Corporation | Abilene, TX 79604 | Oil & Gas Operator | Jun 2025 |
| 27322 | Sokan Operating, LLC | Medicine Lodge, KS 67104 | Oil & Gas Operator | Feb 2025 |
| 27323 | Sol Oil Co., L.C. | Crane, TX 79731 | Oil Operator | Jun 2025 |
| 27324 | Sola Oil Company, Inc. | | Oil & Gas Operator | Aug 1991 |
| 27325 | Sola Operating, LLC | Trout, LA 71371 | Oil Operator | Jun 2025 |
| 27326 | Solano Gas Processing, Inc. | Austin, TX 78759 | Oil & Gas Operator | Aug 1998 |
| 27327 | Solar Exploration TX LLC | Tulsa, OK 74133 | Oil Operator | Dec 2018 |
| 27328 | Solar Petroleum Inc | | Oil Operator | May 1983 |
| 27329 | Solar Sportsystems, Inc. | East Aurora, NY 14052 | Gas Operator | Dec 2023 |
| 27330 | Solatex | | Oil & Gas Operator | Oct 1978 |
| 27331 | Solatex Resources, LTD | Houston, TX 77257 | Oil & Gas Operator | Jun 2025 |
| 27332 | Soldier Creek Energy, LLC | Edmond, OK 73013 | Oil & Gas Operator | Jun 2025 |
| 27333 | Soldier Operating LLC | | Oil & Gas Operator | Dec 2024 |
| 27334 | Soles Larry - Fe | | Oil Operator | Nov 1986 |
| 27335 | Solid Rock Prod. | | Oil Operator | Nov 1994 |
| 27336 | Solimar Energy LLC | | Oil & Gas Operator | Mar 2025 |
| 27337 | Solis Partners, L.L.C. | Midland, TX 79707 | Oil & Gas Operator | Apr 2025 |
| 27338 | Solo Operating Services, LLC | Falfurrias, TX 78355 | Gas Operator | Jun 2025 |
| 27339 | Solomon Exploration Inc. | Havre, MT 59501 | Gas Operator | Feb 2025 |
| 27340 | Solomon Production Corporation | Pullman, WV 26421-0003 | Oil & Gas Operator | Dec 2021 |
| 27341 | Solutions Projects And Consulting, LLC | Houston, TX 77070 | Oil Operator | Jun 2025 |
| 27342 | Somerset Energy | | Oil Operator | Feb 1986 |
| 27343 | Somerset Energy, Inc. | Louisburg, KS 66053 | Oil Operator | Dec 2024 |
| 27344 | Somerset Oil & Gas Company | Portland, TX 78374 | Oil & Gas Operator | Dec 2006 |
| 27345 | Somerset Operating, LLC | Weatherford, TX 76086 | Gas Operator | Jun 2025 |
| 27346 | Somex Energy Company | San Antonio, TX 78230 | Oil & Gas Operator | Mar 2002 |
| 27347 | Sommer Oil LLC | Richmond, KS 66080 | Oil Operator | Dec 2024 |
| 27348 | Somoco Inc | | Oil & Gas Operator | Mar 2025 |
| 27349 | Somont Oil Co., Inc. | Spring, TX 77379 | Oil & Gas Operator | Mar 2025 |
| 27350 | Son-Dad Oil & Gas | | Oil & Gas Operator | Dec 1994 |
| 27351 | Sonat Exploration Co. | Houston, TX 77251 | Oil & Gas Operator | Dec 2021 |
| 27352 | Sonat Exploration Co. - Houston | Houston, TX 77251 | Oil & Gas Operator | Dec 1999 |
| 27353 | Sonat Exploration Co. - Midland | Houston, TX 77251 | Oil & Gas Operator | Mar 1999 |
| 27354 | Sonat Exploration Company -Tyler | Houston, TX 77251 | Oil & Gas Operator | Dec 1999 |
| 27355 | Sonat Exploration Company-MCR | Houston, TX 77251 | Oil & Gas Operator | Dec 1999 |
| 27356 | Sonat Exploration Gom Inc. | Houston, TX 77251 | Oil & Gas Operator | Dec 1999 |
| 27357 | Sonat Raton, L.L.C. | | Gas Operator | Sep 2005 |
| 27358 | Sonata Oil & Gas Corp Inc | Stratford, OK 74812 | Oil & Gas Operator | Apr 2014 |
| 27359 | Sone Energy Corporation | Plano, TX 75023 | Oil & Gas Operator | Sep 1995 |
| 27360 | Sonerra Resources Corporation | Nacogdoches, TX 75963 | Oil & Gas Operator | Jun 2025 |
| 27361 | Song Production Company | Lindsay, OK 73052-0369 | Oil & Gas Operator | Jun 2015 |
| 27362 | Songer Harriett R | Brookville, PA 15825-5367 | Oil & Gas Operator | Dec 2010 |
| 27363 | Sonkar, Inc. | Sunburst, MT 59482 | Oil Operator | Apr 2025 |
| 27364 | Sonny King | | Oil & Gas Operator | Jan 2025 |
| 27365 | Sonny King Production | | Oil & Gas Operator | Jan 2025 |
| 27366 | Sonny'S Tank Trucks Inc | Ratliff City, OK 73481 | Oil Operator | Apr 2025 |
| 27367 | Sonoble Operating, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Jun 2003 |
| 27368 | Sonoma Energy Corporation | Park City, UT 84068 | Oil & Gas Operator | Feb 2010 |
| 27369 | Sonoma Resources LLC | Andover, KS 67002 | Oil & Gas Operator | Feb 2025 |
| 27370 | Sonora Petroleum Corp. | Austin, TX 78734 | Oil & Gas Operator | Jun 2025 |
| 27371 | Sonora Producing, Inc. | | Oil & Gas Operator | May 2006 |
| 27372 | Sonoran Energy Inc. | Addison, TX 75001 | Oil & Gas Operator | Jun 2025 |
| 27373 | Sonterra Energy LLC | Wichita, KS 67226 | Oil & Gas Operator | Jul 2022 |
| 27374 | Sonterra Oil & Gas, Inc. | Wichita, KS 67217 | Oil & Gas Operator | Jun 2025 |
| 27375 | Sonterra Operating, Inc. | Houston, TX 77060 | Oil & Gas Operator | Jun 2025 |
| 27376 | Sooner Acquisition Corp | Wichita, KS 67206 | Oil & Gas Operator | Sep 1993 |
| 27377 | Sooner Corporation | | Oil & Gas Operator | Oct 1990 |
| 27378 | Sooner Crude Inc | Tulsa, OK 74136-9107 | Oil & Gas Operator | Sep 2008 |
| 27379 | Sooner Drilling Inc | Shawnee, OK 74802-0037 | Oil & Gas Operator | Jan 2005 |
| 27380 | Sooner Energy LLC | Norman, OK 73069 | Oil & Gas Operator | Sep 2005 |
| 27381 | Sooner Exploration & Development Co Inc | Enid, OK 73702-3525 | Oil & Gas Operator | Oct 2023 |
| 27382 | Sooner Oil & Gas LLC | Fairview, OK 73737-1806 | Oil & Gas Operator | Apr 2025 |
| 27383 | Sooner Oil & Gas Management Inc | Crescent, OK 73028 | Oil & Gas Operator | Mar 2025 |
| 27384 | Sooner Oilfield Services Inc | Piedmont, OK 73078-0810 | Oil & Gas Operator | May 2024 |
| 27385 | Sooner Operating Co Inc | Casper, WY 83602 | Oil Operator | May 2025 |
| 27386 | Sooner Pipe & Supply Corp | | Oil & Gas Operator | Nov 2004 |
| 27387 | Sooner Resources, Inc. | | Oil & Gas Operator | Mar 1987 |
| 27388 | Sooner Trend Exploration Inc | Kingfisher, OK 73750-4752 | Oil & Gas Operator | Dec 2015 |
| 27389 | Sopac Exploration Inc | Drumright, OK 74030 | Oil & Gas Operator | Jun 1993 |
| 27390 | Soper Production | | Oil & Gas Operator | Dec 2011 |
| 27391 | Sorensen, Kim A. | Abbyville, KS 67510 | Oil Operator | Oct 2024 |
| 27392 | Sorrels J R Dba Cheyenne Oil Properties | Ponca City, OK 74601 | Oil & Gas Operator | Jul 2022 |
| 27393 | Sorto, Peters God | Somerset, TX 78069 | Oil Operator | Jun 2025 |
| 27394 | Sos Production LLC | Ratliff City, OK 73481 | Oil Operator | Mar 2025 |
| 27395 | Soto Inc. | Ozona, TX 76943 | Oil & Gas Operator | Aug 2020 |
| 27396 | Sotol Energy, Inc. | Magnolia, TX 77354 | Oil & Gas Operator | Apr 2025 |
| 27397 | Sotrana-Texas Corp. | | Oil & Gas Operator | Oct 1984 |
| 27398 | Sotta, Donald E. | McCune, KS 66753 | Oil Operator | Dec 2024 |
| 27399 | Soule, Gilbert A. | Madison, KS 66860 | Oil Operator | Jan 2002 |
| 27400 | Soule, Richard A. | Eureka, KS 67045 | Oil Operator | Sep 2019 |