| 27301 | Smith, O. Dale & Smith, A. C. | Amarillo, TX 79110 | Oil & Gas Operator | Mar 2000 |
| 27302 | Smith, R. E. Interests, Inc. | Houston, TX 77027 | Oil & Gas Operator | Mar 1998 |
| 27303 | Smith, Rodney L. | Wellsville, NY 14895 | Oil & Gas Operator | Dec 2023 |
| 27304 | Smith, Roger G | Magnolia, AR 71753 | Oil Operator | Jan 2025 |
| 27305 | Smith, Ronald L. | Bolivar, NY 14715 | Oil Operator | Dec 2023 |
| 27306 | Smith, Ted H. | Wichita Falls, TX 76310 | Oil & Gas Operator | Sep 1998 |
| 27307 | Smith, W. Don | Breckenridge, TX 76424 | Oil & Gas Operator | Aug 2001 |
| 27308 | Smith, W.T. | Panhandle, TX 79068 | Oil & Gas Operator | Nov 2005 |
| 27309 | Smith, Walter E | Grantsville, WV 26147-0000 | Oil & Gas Operator | Dec 2021 |
| 27310 | Smith, William M | | Oil & Gas Operator | Feb 2025 |
| 27311 | Smith, Yvonne C. And Robert M. | Delevan, NY 14042 | Gas Operator | Dec 2023 |
| 27312 | Smith-Clement Exploration Inc | Edmond, OK 73013 | Oil Operator | Jul 1997 |
| 27313 | Smith-Wentworth | | Oil & Gas Operator | Sep 1983 |
| 27314 | Smith-Wentworth & Coquina | | Oil Operator | Jun 1983 |
| 27315 | Smith-Wentworth & Hughes & New | | Oil Operator | Jun 1983 |
| 27316 | Smithberger John D | Marietta, OH 45750 | Oil & Gas Operator | Dec 2024 |
| 27317 | Smithco Oil & Gas Inc | Edmonton, KY 42129 | Oil Operator | Dec 2023 |
| 27318 | Smither Energy Co LLC | Broken Arrow, OK 74011-7615 | Oil & Gas Operator | Nov 2020 |
| 27319 | Smitherman, Leon C., Jr. | Andover, KS 67002 | Oil Operator | Jan 2025 |
| 27320 | Smiths Investment Inc | Sperry, OK 74073-4198 | Oil Operator | Jan 2025 |
| 27321 | SMK-La, Inc. | | Oil & Gas Operator | Sep 1999 |
| 27322 | Smokey Oil Company Inc | Casper, WY 82601 | Oil & Gas Operator | Dec 1996 |
| 27323 | Smokey Trail LLC | Thornton, CO 80241 | Oil & Gas Operator | Mar 2025 |
| 27324 | Smokey Valley Resources | Lyons, KS 67554 | Oil Operator | Jun 1998 |
| 27325 | Smokey Valley Resources, Inc. | Geneseo, KS 67444 | Oil Operator | Nov 2008 |
| 27326 | Smoky Valley Res | | Oil & Gas Operator | Dec 1995 |
| 27327 | Smoot, Richard P | Salt Lake City, UT 84102 | Oil & Gas Operator | Oct 2010 |
| 27328 | SMR Natural Gas Ventures Inc | Oklahoma City, OK 73112 | Oil & Gas Operator | Jan 1999 |
| 27329 | Smucker Ronald O | Somerset, OH 43783 | Oil & Gas Operator | Dec 2003 |
| 27330 | Smulcer, Jimmy A. | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2002 |
| 27331 | Smyth Oil Corporation | Houston, TX 77002 | Oil & Gas Operator | Oct 2003 |
| 27332 | Smyth Oil LLC | Houston, TX 77002 | Oil & Gas Operator | May 2025 |
| 27333 | SN Ef Maverick, LLC | Houston, TX 77002 | Oil & Gas Operator | Aug 2023 |
| 27334 | SN Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | May 2023 |
| 27335 | Snake Creek Oil & Gas Inc | Okmulgee, OK 74447-2041 | Oil & Gas Operator | Dec 2024 |
| 27336 | Snappy Services, Inc. | Pampa, TX 79066 | Oil & Gas Operator | May 2025 |
| 27337 | SND Operating, L.L.C. | Kilgore, TX 75663 | Oil & Gas Operator | May 2025 |
| 27338 | Snedco, Inc. | Chickasha, OK 73023 | Oil Operator | Dec 2024 |
| 27339 | Snee & Eberly & People Natural Gas | Unknown, PA 15000 | Gas Operator | Dec 1986 |
| 27340 | Sneed Drilling Company | Cleveland, OK 74020 | Oil & Gas Operator | Feb 2025 |
| 27341 | Sneed William A Bill | Cleveland, OK 74020-1007 | Oil & Gas Operator | Feb 2025 |
| 27342 | Snelgrooes Oil Company Inc | Maysville, OK 73057-0631 | Oil & Gas Operator | Nov 2014 |
| 27343 | Snelgrooes Well Service Inc | Elmore City, OK 73433 | Oil & Gas Operator | May 2003 |
| 27344 | Snider Brothers | Gratiot, OH 43740 | Oil & Gas Operator | Dec 2015 |
| 27345 | Snider Russell E | Newark, OH 43055 | Oil & Gas Operator | Dec 2014 |
| 27346 | Snow Oil & Gas Inc. | Andrews, TX 79714 | Oil & Gas Operator | May 2025 |
| 27347 | Snow Oil Company | Nocona, TX 76255 | Oil Operator | May 2025 |
| 27348 | Snow Operating Co., Inc. | Haltom City, TX 76117 | Oil & Gas Operator | Feb 2024 |
| 27349 | Snow, Shannon | Gerry, NY 14733 | Gas Operator | Dec 2023 |
| 27350 | Snowy Owl LLC | Gillette, WY 82717 | Oil & Gas Operator | Mar 2025 |
| 27351 | SNR Central Oklahoma Operating LLC | Oklahoma City, OK 73116-7906 | Oil Operator | Mar 2025 |
| 27352 | SNR Kansas Operating, LLC | Oklahoma City, OK 73116 | Oil & Gas Operator | Dec 2019 |
| 27353 | SNR Operating, LLC | Nichols Hill, OK 73116 | Oil & Gas Operator | May 2025 |
| 27354 | Snuffy'S Oilfield Service Inc | Hennessey, OK 73742-6511 | Oil & Gas Operator | Nov 2014 |
| 27355 | Snuggs Oil Company | Gainesville, TX 76240 | Oil & Gas Operator | Jan 2024 |
| 27356 | SNW Operating Company | Borger, TX 79008 | Oil & Gas Operator | May 2025 |
| 27357 | Snyder Bros Inc | Kittanning, PA 16201 | Oil & Gas Operator | Mar 2025 |
| 27358 | Snyder Brothers, Inc. | | Oil & Gas Operator | Dec 2018 |
| 27359 | Snyder Drilling Corp. | Albany, TX 76430 | Oil & Gas Operator | May 2025 |
| 27360 | Snyder K E Compa | | Oil Operator | Jul 1987 |
| 27361 | Snyder Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2015 |
| 27362 | Snyder Oil Corporation | Houston, TX 77024 | Oil & Gas Operator | Mar 2008 |
| 27363 | Snyder Oper Partnership | FT Worth, TX 76102 | Gas Operator | Dec 1988 |
| 27364 | Snyder Partners | Cody, WY 82414 | Oil & Gas Operator | Mar 2025 |
| 27365 | Snyder Partners, General Partnership | Cody, WY 82414 | Oil & Gas Operator | Jul 2019 |
| 27366 | Snyder, Jim Estate (Deceased) | Hamilton, KS 66853 | Oil Operator | Dec 2009 |
| 27367 | Snyder, K. Lance | Hamilton, KS 66853 | Oil Operator | Nov 2004 |
| 27368 | Snyder, Kenneth L. | Springville, NY 14141 | Gas Operator | Dec 2023 |
| 27369 | Snyder, Larry G. | South Dayton, NY 14138 | Gas Operator | Dec 2023 |
| 27370 | Snyder, Robert R | | Oil Operator | Dec 2012 |
| 27371 | So & Jo, LLC | Kansas City, MO 64158 | Oil Operator | Dec 2021 |
| 27372 | So Operating Company | Cisco, TX 76437 | Oil & Gas Operator | May 2025 |
| 27373 | So-I , A General Partnership | Kansas City, MO 64106 | Oil & Gas Operator | Nov 2023 |
| 27374 | Soap Creek Associates, Inc. | Broomfield, CO 80020-2995 | Oil Operator | Mar 2025 |
| 27375 | Soc Resources Inc. | | Oil & Gas Operator | Dec 2024 |
| 27376 | Society Of Bros In Pa Inc | Farmington, PA 15437-0240 | Gas Operator | Dec 2024 |
| 27377 | Soco Gas Properties | Goliad, TX 77963 | Oil & Gas Operator | May 2025 |
| 27378 | Socorro Exploration, Inc. | Lubbock, TX 79464 | Oil & Gas Operator | May 2025 |
| 27379 | Socorro Pet Co | Oklahoma City, OK 73102 | Oil & Gas Operator | Jan 1995 |
| 27380 | Sogc, Inc. | Salt Lake Cty, UT 84131 | Oil & Gas Operator | Mar 2025 |
| 27381 | Sogc, LLC | Salt Lake Cty, UT 84131 | Oil & Gas Operator | May 2025 |
| 27382 | Sogo III LLC | Midland, TX 79702 | Oil & Gas Operator | Jul 2017 |
| 27383 | Sohio Alaska Petroleum Company | | Oil & Gas Operator | Dec 1981 |
| 27384 | Sohio Petr Co-Gulf Oil Corp | | Oil & Gas Operator | Dec 1979 |
| 27385 | Sohio Petroleum Co. | Casper, WY 82602 | Oil & Gas Operator | Apr 1986 |
| 27386 | Sohio Petroleum Co. Et Al | | Oil & Gas Operator | May 1979 |
| 27387 | Sohio-Stand Oil Prod Co | Houston, TX 77210-9928 | Oil & Gas Operator | Jan 1989 |
| 27388 | Soil Energy, Inc. | Imperial, TX 79743 | Oil & Gas Operator | May 2025 |
| 27389 | Sois-Osage Inc | | Oil & Gas Operator | Oct 2006 |
| 27390 | Sojitz Energy Venture, Inc. | Houston, TX 77042 | Oil & Gas Operator | Feb 2018 |
| 27391 | Sojourner Drilling Corporation | Abilene, TX 79604 | Oil & Gas Operator | May 2025 |
| 27392 | Sokan Operating, LLC | Medicine Lodge, KS 67104 | Oil & Gas Operator | Jan 2025 |
| 27393 | Sol Oil Co., L.C. | Crane, TX 79731 | Oil Operator | May 2025 |
| 27394 | Sola Oil Company, Inc. | | Oil & Gas Operator | Aug 1991 |
| 27395 | Sola Operating, LLC | Trout, LA 71371 | Oil Operator | May 2025 |
| 27396 | Solano Gas Processing, Inc. | Austin, TX 78759 | Oil & Gas Operator | Aug 1998 |
| 27397 | Solar Exploration TX LLC | Tulsa, OK 74133 | Oil Operator | Dec 2018 |
| 27398 | Solar Petroleum Inc | | Oil Operator | May 1983 |
| 27399 | Solar Sportsystems, Inc. | East Aurora, NY 14052 | Gas Operator | Dec 2023 |
| 27400 | Solatex | | Oil & Gas Operator | Oct 1978 |