| 27101 | Smith, L C Production | Jacksonville, TX 75766 | Oil Operator | Jul 2025 |
| 27102 | Smith, L. C. | Jacksonville, TX 75766 | Oil & Gas Operator | Jul 2025 |
| 27103 | Smith, Loren E. And Foster, Chas. P. | Broomfield, CO 80020 | Oil Operator | May 2025 |
| 27104 | Smith, Loren L. | Oswego, KS 67356 | Oil & Gas Operator | Sep 2009 |
| 27105 | Smith, Loretta Sue | Park City, KY 42160 | Oil Operator | Dec 2023 |
| 27106 | Smith, Mark A. & Laurel A. | South Dayton, NY 14138 | Gas Operator | Dec 2024 |
| 27107 | Smith, Marvin M. | Orchard Park, NY 14127 | Gas Operator | Dec 2024 |
| 27108 | Smith, O. Dale & Smith, A. C. | Amarillo, TX 79110 | Oil & Gas Operator | Mar 2000 |
| 27109 | Smith, R. E. Interests, Inc. | Houston, TX 77027 | Oil & Gas Operator | Mar 1998 |
| 27110 | Smith, Rodney L. | Wellsville, NY 14895 | Oil & Gas Operator | Dec 2024 |
| 27111 | Smith, Roger G | Magnolia, AR 71753 | Oil Operator | Jan 2025 |
| 27112 | Smith, Ronald L. | Bolivar, NY 14715 | Oil Operator | Dec 2024 |
| 27113 | Smith, Ted H. | Wichita Falls, TX 76310 | Oil & Gas Operator | Sep 1998 |
| 27114 | Smith, W. Don | Breckenridge, TX 76424 | Oil & Gas Operator | Aug 2001 |
| 27115 | Smith, W.T. | Panhandle, TX 79068 | Oil & Gas Operator | Nov 2005 |
| 27116 | Smith, Walter E | Grantsville, WV 26147-0000 | Oil & Gas Operator | Dec 2021 |
| 27117 | Smith, William M | | Oil & Gas Operator | Feb 2025 |
| 27118 | Smith, Yvonne C. And Robert M. | Delevan, NY 14042 | Gas Operator | Dec 2024 |
| 27119 | Smith-Clement Exploration Inc | Edmond, OK 73013 | Oil Operator | Jul 1997 |
| 27120 | Smith-Wentworth | | Oil & Gas Operator | Sep 1983 |
| 27121 | Smith-Wentworth & Coquina | | Oil Operator | Jun 1983 |
| 27122 | Smith-Wentworth & Hughes & New | | Oil Operator | Jun 1983 |
| 27123 | Smithberger John D | Marietta, OH 45750 | Oil & Gas Operator | Dec 2024 |
| 27124 | Smithco Oil & Gas Inc | Edmonton, KY 42129 | Oil Operator | Dec 2023 |
| 27125 | Smither Energy Co LLC | Broken Arrow, OK 74011-7615 | Oil & Gas Operator | Nov 2020 |
| 27126 | Smitherman, Leon C., Jr. | Andover, KS 67002 | Oil Operator | Mar 2025 |
| 27127 | Smiths Investment Inc | Sperry, OK 74073-4198 | Oil Operator | Apr 2025 |
| 27128 | SMK-La, Inc. | | Oil & Gas Operator | Sep 1999 |
| 27129 | Smokey Gap Oil Company LLC | | Oil Operator | May 2025 |
| 27130 | Smokey Oil Company Inc | Casper, WY 82601 | Oil & Gas Operator | Dec 1996 |
| 27131 | Smokey Trail LLC | Thornton, CO 80241 | Oil & Gas Operator | May 2025 |
| 27132 | Smokey Valley Resources | Lyons, KS 67554 | Oil Operator | Jun 1998 |
| 27133 | Smokey Valley Resources, Inc. | Geneseo, KS 67444 | Oil Operator | Nov 2008 |
| 27134 | Smoky Valley Res | | Oil & Gas Operator | Dec 1995 |
| 27135 | Smoot, Richard P | Salt Lake City, UT 84102 | Oil & Gas Operator | Oct 2010 |
| 27136 | SMR Natural Gas Ventures Inc | Oklahoma City, OK 73112 | Oil & Gas Operator | Jan 1999 |
| 27137 | Smucker Ronald O | Somerset, OH 43783 | Oil & Gas Operator | Dec 2003 |
| 27138 | Smulcer, Jimmy A. | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2002 |
| 27139 | Smyth Oil Corporation | Houston, TX 77002 | Oil & Gas Operator | Oct 2003 |
| 27140 | Smyth Oil LLC | Houston, TX 77002 | Oil & Gas Operator | Jul 2025 |
| 27141 | SN Ef Maverick, LLC | Houston, TX 77002 | Oil & Gas Operator | Aug 2023 |
| 27142 | SN Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | May 2023 |
| 27143 | Snake Creek Oil & Gas Inc | Okmulgee, OK 74447-2041 | Oil & Gas Operator | Mar 2025 |
| 27144 | Snappy Services, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Jul 2025 |
| 27145 | SND Operating, L.L.C. | Kilgore, TX 75663 | Oil & Gas Operator | Jul 2025 |
| 27146 | Snedco, Inc. | Chickasha, OK 73023 | Oil Operator | Mar 2025 |
| 27147 | Snee & Eberly & People Natural Gas | Unknown, PA 15000 | Gas Operator | Dec 1986 |
| 27148 | Sneed Drilling Company | Cleveland, OK 74020 | Oil & Gas Operator | Feb 2025 |
| 27149 | Sneed William A Bill | Cleveland, OK 74020-1007 | Oil & Gas Operator | Apr 2025 |
| 27150 | Snelgrooes Oil Company Inc | Maysville, OK 73057-0631 | Oil & Gas Operator | Nov 2014 |
| 27151 | Snelgrooes Well Service Inc | Elmore City, OK 73433 | Oil & Gas Operator | May 2003 |
| 27152 | Snider Brothers | Gratiot, OH 43740 | Oil & Gas Operator | Dec 2015 |
| 27153 | Snider Russell E | Newark, OH 43055 | Oil & Gas Operator | Dec 2014 |
| 27154 | Snow Oil & Gas Inc. | Andrews, TX 79714 | Oil & Gas Operator | Jul 2025 |
| 27155 | Snow Oil Company | Nocona, TX 76255 | Oil Operator | Jul 2025 |
| 27156 | Snow Operating Co., Inc. | Haltom City, TX 76117 | Oil & Gas Operator | Feb 2024 |
| 27157 | Snow, Shannon | Gerry, NY 14733 | Gas Operator | Dec 2024 |
| 27158 | Snowy Owl LLC | Gillette, WY 82717 | Oil & Gas Operator | May 2025 |
| 27159 | SNR Central Oklahoma Operating LLC | Oklahoma City, OK 73116-7906 | Oil Operator | May 2025 |
| 27160 | SNR Kansas Operating, LLC | Oklahoma City, OK 73116 | Oil & Gas Operator | Dec 2019 |
| 27161 | SNR Operating, LLC | Nichols Hill, OK 73116 | Oil & Gas Operator | Jul 2025 |
| 27162 | Snuffy'S Oilfield Service Inc | Hennessey, OK 73742-6511 | Oil & Gas Operator | Nov 2014 |
| 27163 | Snuggs Oil Company | Gainesville, TX 76240 | Oil & Gas Operator | Jan 2024 |
| 27164 | SNW Operating Company | Borger, TX 79008 | Oil & Gas Operator | Jul 2025 |
| 27165 | Snyder Bros Inc | Kittanning, PA 16201 | Oil & Gas Operator | May 2025 |
| 27166 | Snyder Brothers, Inc. | | Oil & Gas Operator | Dec 2018 |
| 27167 | Snyder Drilling Corp. | Albany, TX 76430 | Oil & Gas Operator | Jul 2025 |
| 27168 | Snyder K E Compa | | Oil Operator | Jul 1987 |
| 27169 | Snyder Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2015 |
| 27170 | Snyder Oil Corporation | Houston, TX 77024 | Oil & Gas Operator | Mar 2008 |
| 27171 | Snyder Oper Partnership | FT Worth, TX 76102 | Gas Operator | Dec 1988 |
| 27172 | Snyder Partners | Cody, WY 82414 | Oil & Gas Operator | May 2025 |
| 27173 | Snyder Partners, General Partnership | Cody, WY 82414 | Oil & Gas Operator | Jul 2019 |
| 27174 | Snyder, Jim Estate (Deceased) | Hamilton, KS 66853 | Oil Operator | Dec 2009 |
| 27175 | Snyder, K. Lance | Hamilton, KS 66853 | Oil Operator | Nov 2004 |
| 27176 | Snyder, Kenneth L. | Springville, NY 14141 | Gas Operator | Dec 2024 |
| 27177 | Snyder, Larry G. | South Dayton, NY 14138 | Gas Operator | Dec 2024 |
| 27178 | Snyder, Robert R | | Oil Operator | Dec 2012 |
| 27179 | So & Jo, LLC | Kansas City, MO 64158 | Oil Operator | Dec 2021 |
| 27180 | So Operating Company | Cisco, TX 76437 | Oil & Gas Operator | Jul 2025 |
| 27181 | So-I , A General Partnership | Kansas City, MO 64106 | Oil & Gas Operator | Nov 2023 |
| 27182 | Soap Creek Associates, Inc. | Broomfield, CO 80020-2995 | Oil Operator | May 2025 |
| 27183 | Soc Resources Inc. | | Oil & Gas Operator | Dec 2024 |
| 27184 | Society Of Bros In Pa Inc | Farmington, PA 15437-0240 | Gas Operator | Dec 2024 |
| 27185 | Soco Gas Properties | Goliad, TX 77963 | Oil & Gas Operator | Jul 2025 |
| 27186 | Socorro Exploration, Inc. | Lubbock, TX 79464 | Oil & Gas Operator | Jul 2025 |
| 27187 | Socorro Pet Co | Oklahoma City, OK 73102 | Oil & Gas Operator | Jan 1995 |
| 27188 | Sogc, Inc. | Salt Lake Cty, UT 84131 | Oil & Gas Operator | May 2025 |
| 27189 | Sogc, LLC | Salt Lake Cty, UT 84131 | Oil & Gas Operator | Jul 2025 |
| 27190 | Sogo III LLC | Midland, TX 79702 | Oil & Gas Operator | Jul 2017 |
| 27191 | Sohio Alaska Petroleum Company | | Oil & Gas Operator | Dec 1981 |
| 27192 | Sohio Petr Co-Gulf Oil Corp | | Oil & Gas Operator | Dec 1979 |
| 27193 | Sohio Petroleum Co. | Casper, WY 82602 | Oil & Gas Operator | Apr 1986 |
| 27194 | Sohio Petroleum Co. Et Al | | Oil & Gas Operator | May 1979 |
| 27195 | Sohio-Stand Oil Prod Co | Houston, TX 77210-9928 | Oil & Gas Operator | Jan 1989 |
| 27196 | Soil Energy, Inc. | Imperial, TX 79743 | Oil & Gas Operator | Jul 2025 |
| 27197 | Sois-Osage Inc | | Oil & Gas Operator | Oct 2006 |
| 27198 | Sojitz Energy Venture, Inc. | Houston, TX 77042 | Oil & Gas Operator | Feb 2018 |
| 27199 | Sojourner Drilling Corporation | Abilene, TX 79604 | Oil & Gas Operator | Jul 2025 |
| 27200 | Sokan Operating, LLC | Medicine Lodge, KS 67104 | Oil & Gas Operator | Mar 2025 |