| 1201 | Silvco Energy, LLC | | Oil Operator | Apr 2014 |
| 1202 | Silver Anchor Resources LLC | Azle, TX 76020 | Oil & Gas Operator | Sep 2026 |
| 1203 | Silver Creek Oil | Merkel, TX 79536 | Oil & Gas Operator | Aug 2003 |
| 1204 | Silver Creek Oil & Gas, Inc. | Wichita, KS 67203 | Oil Operator | Dec 1997 |
| 1205 | Silver Creek Oil & Gas, LLC | Flower Mound, TX 75022 | Oil & Gas Operator | Sep 2026 |
| 1206 | Silver Creek Permian Op Co, LLC | Irving, TX 75038 | Oil & Gas Operator | Apr 2023 |
| 1207 | Silver Creek Resources, LLC | Irving, TX 75038 | Oil & Gas Operator | Apr 2017 |
| 1208 | Silver Cross Energy Partners LLC | Richmond, TX 77469 | Oil & Gas Operator | Sep 2026 |
| 1209 | Silver Eagle Oil Company | Ada, OK 74820 | Oil Operator | Dec 2004 |
| 1210 | Silver Exploration Company | | Oil & Gas Operator | Jul 2026 |
| 1211 | Silver Fox Oil & Gas LLC | McAllen, TX 78504 | Oil & Gas Operator | Sep 2026 |
| 1212 | Silver Hill Energy Operating, LLC | Dallas, TX 75201 | Oil & Gas Operator | Sep 2026 |
| 1213 | Silver Hill Energy Partners, LLC | Dallas, TX 75219 | Oil & Gas Operator | Feb 2017 |
| 1214 | Silver Mountain Energy LLC | | Gas Operator | Dec 2025 |
| 1215 | Silver Oak Energy, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2016 |
| 1216 | Silver Oak Operating, Inc. | Longview, TX 75601 | Oil & Gas Operator | Dec 2009 |
| 1217 | Silver Oak Operating, LLC | Longview, TX 75604 | Oil & Gas Operator | Sep 2026 |
| 1218 | Silver Oil & Gas Inc. | San Angelo, TX 76906 | Oil & Gas Operator | Sep 2026 |
| 1219 | Silver Petroleum Inc | | Gas Operator | Dec 2001 |
| 1220 | Silver Pines Energy Corp. | Houston, TX 77005 | Oil & Gas Operator | Jun 2026 |
| 1221 | Silver Rock Energy, LLC | Terrell, TX 75160 | Oil Operator | Sep 2026 |
| 1222 | Silver Spike Energy Oper, LLC | Midland, TX 79710 | Oil & Gas Operator | Dec 2015 |
| 1223 | Silver Spike Energy Operating Of NM, LLC | Midland, TX 79701 | Oil Operator | Jul 2016 |
| 1224 | Silver Star Of Nevada Inc | Oklahoma City, OK 73134 | Oil & Gas Operator | May 2026 |
| 1225 | Silver Star Operating Co., LLC | Nada, TX 77460 | Gas Operator | Sep 2026 |
| 1226 | Silver Star Production Co | Moore, OK 73160-6202 | Oil & Gas Operator | Jun 2026 |
| 1227 | Silver Thread Oil & Gas, Inc. | | Oil & Gas Operator | Jul 2015 |
| 1228 | Silver Tusk Operating Co. LLC | Houston, TX 77056 | Oil & Gas Operator | Nov 2018 |
| 1229 | Silverado Oil Inc | Greeley, CO 80631 | Oil Operator | Apr 2000 |
| 1230 | Silverado Oil LTD | Ardmore, OK 73401 | Oil & Gas Operator | Jun 2003 |
| 1231 | Silverado Operating LLC | Plntersville, TX 77363 | Oil Operator | Sep 2026 |
| 1232 | Silverback Operating II, LLC | Oklahoma City, OK 73104 | Oil & Gas Operator | Jun 2026 |
| 1233 | Silverback Operating, LLC | San Antonio, TX 78257 | Oil & Gas Operator | Oct 2016 |
| 1234 | Silverbacq LLC | | Oil & Gas Operator | Jul 2026 |
| 1235 | Silverbow Resources Oper, LLC | Houston, TX 77002 | Oil & Gas Operator | May 2026 |
| 1236 | Silverbrook Operating II LLC | Barker, TX 77413 | Oil & Gas Operator | Sep 2026 |
| 1237 | Silverbrook Operating, LLC | Barker, TX 77413 | Oil & Gas Operator | Sep 2026 |
| 1238 | Silverridge Corp | Van Buren, AR 72956 | Oil & Gas Operator | Mar 2015 |
| 1239 | Silvertin Farm Production LLC | Poteau, OK 74953 | Oil & Gas Operator | Apr 2020 |
| 1240 | Simar Petroleum, LLC | | Oil Operator | Dec 2024 |
| 1241 | Simasko Producti | | Oil Operator | Dec 1986 |
| 1242 | Simasko Production Co | Denver, CO 80204 | Oil & Gas Operator | Nov 1997 |
| 1243 | Simata Energy | Midland, TX 79708 | Oil & Gas Operator | Sep 2026 |
| 1244 | Simata Energy, LLC | Midland, TX 79708 | Oil & Gas Operator | Sep 2026 |
| 1245 | Simco Oil Company | | Oil Operator | Jul 1990 |
| 1246 | Simco Oil, LLC | Lytle, TX 78052 | Oil Operator | Sep 2026 |
| 1247 | Simco Operating | Shawnee, OK 74804-2501 | Oil Operator | Jan 2013 |
| 1248 | Simco Petroleum | Cheyenne, WY 82003 | Oil & Gas Operator | Oct 2009 |
| 1249 | Simcoe LLC | Durango, CO 81301 | Oil & Gas Operator | Jun 2026 |
| 1250 | Simcoe Oil Company | Scottsdale, AZ 85258-2553 | Oil & Gas Operator | May 2020 |
| 1251 | Simme, Steven | Elma, NY 14052 | Gas Operator | Dec 2025 |
| 1252 | Simminger, Robert John Jr | | Oil Operator | Dec 2025 |
| 1253 | Simmons Donald M | Muskogee, OK 74401 | Oil & Gas Operator | May 2013 |
| 1254 | Simmons Engr & Consulting Co | Farmington, NM 87499 | Gas Operator | Feb 2002 |
| 1255 | Simmons Evelyn B-Per Represent | Edmond, OK 73083-3610 | Oil & Gas Operator | Aug 1996 |
| 1256 | Simmons Mack McCoy | Cement, OK 73017 | Oil Operator | Jun 2026 |
| 1257 | Simmons Oil Corp | | Oil Operator | Jan 1989 |
| 1258 | Simmons Robert Z | | Oil Operator | Dec 1990 |
| 1259 | Simmons, Inc.* D. J. | | Oil & Gas Operator | May 2020 |
| 1260 | Simmons, L.B. Energy, Inc. | Midland, TX 79705 | Oil & Gas Operator | Nov 2000 |
| 1261 | Simmons, Stanley J. | Olney, TX 76374 | Oil & Gas Operator | Aug 1994 |
| 1262 | Simon Joseph W | Carney, OK 74832-0443 | Oil & Gas Operator | Dec 2016 |
| 1263 | Simon Of Bolivar Enterprises Inc | Cuba, NY 14727 | Oil & Gas Operator | Dec 2025 |
| 1264 | Simon Oil Company | Ardmore, OK 73401 | Oil Operator | May 2026 |
| 1265 | Simon Oil LLC | Kaycee, WY 82639 | Oil Operator | Apr 2026 |
| 1266 | Simon Royce & Joyce | Tecumseh, OK 74873-7341 | Oil Operator | Jun 2018 |
| 1267 | Simon, W. D. Oil Co. | Kermit, TX 79745 | Oil & Gas Operator | Sep 2026 |
| 1268 | Simple Operating LLC | Cross Plains, TX 76443 | Oil Operator | Sep 2026 |
| 1269 | Simpson B T Jr | Orlando, FL 32806 | Oil & Gas Operator | Dec 1986 |
| 1270 | Simpson Bros. Oil Co. | Odessa, TX 79760 | Oil & Gas Operator | Jan 2001 |
| 1271 | Simpson Bros. Oil Co.-Odessa | Odessa, TX 79760 | Oil & Gas Operator | Jan 2001 |
| 1272 | Simpson Gary H | Albion, PA 16401-8008 | Gas Operator | Dec 2014 |
| 1273 | Simpson Oil & Land Co. | Fort Worth, TX 76102 | Oil & Gas Operator | Sep 2026 |
| 1274 | Simpson Oil Company | Odessa, TX 79760 | Oil & Gas Operator | Oct 2004 |
| 1275 | Simpson Operating Services, LP | Ballinger, TX 76821 | Oil & Gas Operator | Sep 2026 |
| 1276 | Simpson Well Service, Inc. | | Oil Operator | Dec 1996 |
| 1277 | Simpson, A. E. | Electra, TX 76360 | Oil & Gas Operator | Dec 2006 |
| 1278 | Simray GP, LLC | Richardson, TX 75080 | Oil & Gas Operator | Dec 2015 |
| 1279 | Simray Oil & Gas, Inc. | Richardson, TX 75080 | Oil & Gas Operator | Sep 2003 |
| 1280 | Simray Operating Corp. | Richardson, TX 75080 | Oil & Gas Operator | Mar 2009 |
| 1281 | Simray Production Company LP | Richland, TX 75080 | Oil & Gas Operator | Dec 2010 |
| 1282 | Sims, John S. | Lawn, TX 79530 | Oil & Gas Operator | Aug 2003 |
| 1283 | Sinclair Development, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Sep 2026 |
| 1284 | Sinclair Energy Corporation | Fort Worth, TX 76177 | Oil & Gas Operator | Sep 2026 |
| 1285 | Sinclair Exploration Company | Abilene, TX 79604 | Oil & Gas Operator | Nov 1998 |
| 1286 | Sinclair Oil & Gas Company | Salt Lake Cty, UT 84130 | Oil & Gas Operator | Sep 2026 |
| 1287 | Sinclair Oil Corporation | Salt Lake Cty, UT 84130 | Oil & Gas Operator | Aug 2006 |
| 1288 | Singer Joseph B Expl Co | Oklahoma City, OK 73118-7486 | Oil & Gas Operator | Mar 1993 |
| 1289 | Singer Oil Co LLC | Hennessey, OK 73742 | Oil & Gas Operator | Jun 2026 |
| 1290 | Singer Oil Company | Oklahoma City, OK 73148 | Oil & Gas Operator | Apr 2026 |
| 1291 | Singer-Fleischaker Oil Co Inc | | Oil & Gas Operator | Jul 1987 |
| 1292 | Singer-Fleischaker Oil Op Co | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2002 |
| 1293 | Singer-Fleischaker,Dillon | | Oil & Gas Operator | Aug 1979 |
| 1294 | Single Barrel Oil And Gas LLC | Granbury, TX 76048 | Oil & Gas Operator | Sep 2026 |
| 1295 | Singleton Investments, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Oct 2012 |
| 1296 | Singletree Resources, Inc. | | Oil Operator | Aug 2014 |
| 1297 | Sink Hole, Inc. | Levelland, TX 79336 | Oil & Gas Operator | Dec 2000 |
| 1298 | Sinkhole Solutions, LLC | Bowling Green, KY 42103 | Oil Operator | Dec 2021 |
| 1299 | Sinow, G. S. | Pampa, TX 79066 | Oil & Gas Operator | Oct 1995 |
| 1300 | Siosi Oil & Gas Company | Tulsa, OK 74170 | Oil & Gas Operator | Nov 2013 |