| 27101 | Spillers Petroleum, Inc. | | Gas Operator | Mar 2010 |
| 27102 | Spindletop Drilling Co. | Dallas, TX 75230 | Oil & Gas Operator | Sep 2026 |
| 27103 | Spindletop Oil & | | Oil Operator | Jun 1993 |
| 27104 | Spindletop Oil & Gas Co. | Dallas, TX 75230 | Oil & Gas Operator | Sep 2026 |
| 27105 | Spines Explorati | | Oil & Gas Operator | Dec 1990 |
| 27106 | Spinnaker Exploration Co.,L.L.C. | Houston, TX 77002 | Oil & Gas Operator | Nov 2005 |
| 27107 | Spiral Energy Corp. | Midland, TX 79705 | Oil & Gas Operator | Dec 2019 |
| 27108 | Spire Asset Management LLC | Lafayette, CO 80026 | Oil & Gas Operator | Jun 2026 |
| 27109 | Spire Missouri Inc. | | Oil Operator | May 2022 |
| 27110 | Spire Oil Services LLC | | Oil & Gas Operator | Nov 2020 |
| 27111 | Spirit Energy Inc | Edmond, OK 73034 | Oil & Gas Operator | Apr 1999 |
| 27112 | Spirit Energy L.L.C. | Caddo Mills, TX 75135 | Oil & Gas Operator | Dec 2018 |
| 27113 | Spirit O&G Operating, LLC | Houston, TX 77010 | Oil & Gas Operator | Sep 2026 |
| 27114 | Spirit Petroleum Company | | Oil & Gas Operator | Apr 1999 |
| 27115 | Spitfire Energy Group LLC | Oklahoma City, OK 73114-7444 | Oil Operator | Apr 2023 |
| 27116 | Spitfire Partners, LLC | Dallas, TX 75225 | Oil Operator | Sep 2026 |
| 27117 | Spivey, R. L. | Olney, TX 76374 | Oil Operator | Jul 2005 |
| 27118 | Spivey, William | Hays, KS 67601 | Oil Operator | Jun 1993 |
| 27119 | Splawn & Splawn | Saint Louis, OK 74866-0098 | Oil & Gas Operator | Mar 2025 |
| 27120 | Splechter, Tim | Yates Center, KS 66783 | Oil Operator | Apr 2026 |
| 27121 | SPN Energy, LLC | Guston, KY 40142 | Gas Operator | Dec 2024 |
| 27122 | Spokane Operating, LLC | | Oil & Gas Operator | Dec 2024 |
| 27123 | Sponte Operating, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Sep 2026 |
| 27124 | Spoonemore Brothers | Spearman, TX 79081 | Oil & Gas Operator | Nov 2019 |
| 27125 | Spooner & Marlin Expl., Inc. | | Oil & Gas Operator | Mar 1990 |
| 27126 | Spooner Petroleum Company | | Oil & Gas Operator | Jun 2026 |
| 27127 | Spotted Hawk Development, LLC | | Oil & Gas Operator | Jun 2026 |
| 27128 | Spradco, Inc. | Towanda, KS 67144 | Oil Operator | Mar 2026 |
| 27129 | Spragins Ed S | Wichita Falls, TX 76308 | Oil & Gas Operator | Jun 2026 |
| 27130 | Spragins, Ed | Wichita Falls, TX 76308 | Oil & Gas Operator | Sep 2026 |
| 27131 | Sprague, Gary L. | Versailles, NY 14168 | Gas Operator | Dec 2025 |
| 27132 | Spri Oil & Gas, LLC | Houston, TX 77090 | Oil & Gas Operator | Mar 2020 |
| 27133 | Spring Creek Farm And Oil, LLC | Bixby, OK 74008 | Oil Operator | Jun 2025 |
| 27134 | Spring Industries Inc | Wellington, FL 33414 | Oil & Gas Operator | Dec 2016 |
| 27135 | Spring Operating Company | Edmond, OK 73034 | Oil & Gas Operator | Jun 2026 |
| 27136 | Spring Resources, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Jul 2007 |
| 27137 | Spring Tide Petroleum Inc | Broken Arrow, OK 74011-6651 | Oil & Gas Operator | Oct 2025 |
| 27138 | Spring Tree Management LC | Abilene, TX 79604 | Oil Operator | May 2013 |
| 27139 | Spring Valley Development Co LLC | Centennial, CO 80014 | Oil & Gas Operator | Jul 2026 |
| 27140 | Spring Valley Oil & Gas Inc | Drummond, OK 73735 | Oil & Gas Operator | Jun 2026 |
| 27141 | Spring, Harry A. | Ardmore, OK 73401 | Oil Operator | Jul 2012 |
| 27142 | Springer Energy Company, LLC | Akron, OH 44313 | Oil & Gas Operator | Dec 2025 |
| 27143 | Springer, Lee A. | Independence, KS 67301 | Oil Operator | May 2014 |
| 27144 | Springfield Oil Services, Inc. | Mamaroneck, NY 10543 | Oil & Gas Operator | Sep 2026 |
| 27145 | Springline Operating LLC | | Oil & Gas Operator | Jun 2026 |
| 27146 | Springs, Jesse | Luling, TX 78648 | Oil & Gas Operator | Jun 1998 |
| 27147 | Springville-Griffith Institute Central School Dist | Springville, NY 14141 | Gas Operator | Dec 2025 |
| 27148 | Sproul, C. R. Inc. | Eldorado, TX 76936 | Oil & Gas Operator | Aug 2000 |
| 27149 | Spruiell Drilling Co., Inc. | Holliday, TX 76366 | Oil & Gas Operator | Sep 2026 |
| 27150 | SPS, Inc. | Cheney, KS 67025 | Oil & Gas Operator | Apr 2026 |
| 27151 | Spur Energy | Midland, TX 79708 | Oil & Gas Operator | Mar 1996 |
| 27152 | Spur Energy Partners LLC | Houston, TX 77024 | Oil & Gas Operator | Jun 2026 |
| 27153 | Spur Operating Co. | Austin, TX 78701 | Oil & Gas Operator | Sep 2026 |
| 27154 | Spurgeon William Allan | Nowata, OK 74048-9713 | Oil Operator | Feb 2010 |
| 27155 | Spurgeon William C & Tammy D | Hominy, OK 74035 | Oil & Gas Operator | May 2026 |
| 27156 | Spyglass Cedar Creek, LP | | Gas Operator | Jul 2012 |
| 27157 | Spyglass Oil & Gas LLC | | Oil & Gas Operator | Dec 2024 |
| 27158 | Square Mile Energy, L.L.C. | Houston, TX 77057 | Oil & Gas Operator | Sep 2026 |
| 27159 | Square One Corporation | Giddings, TX 78942 | Oil & Gas Operator | Dec 2012 |
| 27160 | Square One Energy, Inc. | Tulsa, OK 74159 | Oil & Gas Operator | Oct 2015 |
| 27161 | Squaw Mountain Oil, LLC | Jacksboro, TX 76458 | Oil Operator | Sep 2026 |
| 27162 | Squirrel Oil & Gas Inc | Tonkawa, OK 74653 | Oil & Gas Operator | Mar 2022 |
| 27163 | Squyres Oil Co., Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Nov 2024 |
| 27164 | SR Production Corp. | Liberty, TX 77575 | Oil & Gas Operator | Mar 2010 |
| 27165 | Sram Oil Incorporated | Winfield, KS 67156 | Oil & Gas Operator | Aug 2005 |
| 27166 | SRG Oil Corporation | Abilene, TX 79604 | Oil & Gas Operator | Apr 1994 |
| 27167 | SRP Production Corp. | | Oil & Gas Operator | Nov 1997 |
| 27168 | SRS Properties, LLC | Whitehouse, TX 75791 | Oil & Gas Operator | Sep 2026 |
| 27169 | SRV Oil Co | Coleman, TX 76834 | Oil Operator | Sep 2026 |
| 27170 | SRW Operating LLC | Duncan, OK 73534-2087 | Oil & Gas Operator | Sep 2014 |
| 27171 | SS Operating LLC | Water Valley, TX 76958 | Oil Operator | Sep 2026 |
| 27172 | SSB Production LC | Ardmore, OK 73401 | Oil & Gas Operator | May 2026 |
| 27173 | SSC, Inc. | Lubbock, TX 79408 | Oil & Gas Operator | Sep 2026 |
| 27174 | Ssi Energy LLC | | Oil & Gas Operator | Jul 2021 |
| 27175 | SSM Partnership-PV79 | | Oil Operator | Jun 1989 |
| 27176 | Ssouri Oil Ventures | | Oil Operator | Jan 2022 |
| 27177 | St Cleric Resources LLC | | Gas Operator | Jul 2026 |
| 27178 | St Croix LTD | Fairlawn, OH 44334 | Oil & Gas Operator | Dec 2022 |
| 27179 | St Croix Operating Inc | | Oil & Gas Operator | May 2026 |
| 27180 | St Johns Operating #1 LP | Houston, TX 77060 | Oil & Gas Operator | Aug 2023 |
| 27181 | St Michael Exploration | | Oil & Gas Operator | Jun 1987 |
| 27182 | St Oil Company | Denver, CO 80264-2101 | Oil & Gas Operator | Dec 2010 |
| 27183 | St Oil Company LLC | New York, NY 10005-4016 | Oil Operator | May 2026 |
| 27184 | St Petroleum, Inc. | Edgerton, KS 66021 | Oil Operator | Apr 2026 |
| 27185 | St. Cajetan Oil Company, LLC | Gainesville, TX 76240 | Oil & Gas Operator | Sep 2026 |
| 27186 | St. Clair Energy Corporation | Tulsa, OK 74153 | Oil & Gas Operator | Mar 2008 |
| 27187 | St. Clair Oil Co. | St Clairsville, OH 43950 | Oil & Gas Operator | Dec 1997 |
| 27188 | St. Columban'S On The Lake, Inc. | Silver Creek, NY 14136 | Gas Operator | Dec 2025 |
| 27189 | St. Croix Corporation | | Oil & Gas Operator | Apr 1990 |
| 27190 | St. James Oil Corporation | | Oil & Gas Operator | Dec 2009 |
| 27191 | St. Mary Energy Company | Houston, TX 77079 | Oil & Gas Operator | Aug 2008 |
| 27192 | St. Mary Land & Exploration Co | Denver, CO 80201 | Oil & Gas Operator | Jun 2010 |
| 27193 | St. Mary Operating Company | Denver, CO 80203 | Oil & Gas Operator | Mar 2019 |
| 27194 | St. Paul Oil And Gas Corp. | | Oil & Gas Operator | Aug 1991 |
| 27195 | Sta-Kel Incorporated | Graham, TX 76450 | Oil & Gas Operator | Dec 2000 |
| 27196 | Staab Alan R | Tulsa, OK 74114-4213 | Oil & Gas Operator | Sep 2010 |
| 27197 | Staab Energy & Leasing | | Oil Operator | Sep 2025 |
| 27198 | Staab Oil Co., A General Partnership | Hays, KS 67601 | Oil Operator | Apr 2026 |
| 27199 | Staats & Martin | | Oil Operator | Aug 2013 |
| 27200 | Staats, William N | | Oil & Gas Operator | May 2026 |