| 27301 | Silver Cross Energy Partners LLC | Richmond, TX 77469 | Oil & Gas Operator | Dec 2024 |
| 27302 | Silver Eagle Oil Company | Ada, OK 74820 | Oil Operator | Dec 2004 |
| 27303 | Silver Exploration Company | | Oil & Gas Operator | Dec 2024 |
| 27304 | Silver Fox Oil & Gas LLC | Hebbronville, TX 78361 | Oil & Gas Operator | Apr 2025 |
| 27305 | Silver Hill Energy Operating, LLC | Dallas, TX 75201 | Oil & Gas Operator | Apr 2025 |
| 27306 | Silver Hill Energy Partners, LLC | Dallas, TX 75219 | Oil & Gas Operator | Feb 2017 |
| 27307 | Silver Mountain Energy LLC | | Oil & Gas Operator | Dec 2024 |
| 27308 | Silver Oak Energy, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2016 |
| 27309 | Silver Oak Operating, Inc. | Longview, TX 75601 | Oil & Gas Operator | Dec 2009 |
| 27310 | Silver Oak Operating, LLC | Longview, TX 75604 | Oil & Gas Operator | Apr 2025 |
| 27311 | Silver Oil & Gas Inc. | San Angelo, TX 76906 | Oil & Gas Operator | Apr 2025 |
| 27312 | Silver Petroleum Inc | | Gas Operator | Dec 2001 |
| 27313 | Silver Pines Energy Corp. | Houston, TX 77005 | Oil & Gas Operator | Jan 2025 |
| 27314 | Silver Run Oil & Gas | | Oil & Gas Operator | Dec 2021 |
| 27315 | Silver Spike Energy Oper, LLC | Midland, TX 79710 | Oil & Gas Operator | Dec 2015 |
| 27316 | Silver Spike Energy Operating Of NM, LLC | Midland, TX 79701 | Oil Operator | Jul 2016 |
| 27317 | Silver Square Resources LLC | Cincinnati, OH 45219 | Oil Operator | Dec 2023 |
| 27318 | Silver Star Of Nevada Inc | Oklahoma City, OK 73134 | Oil & Gas Operator | Jan 2025 |
| 27319 | Silver Star Operating Co., LLC | Nada, TX 77460 | Gas Operator | Apr 2025 |
| 27320 | Silver Star Production Co | Moore, OK 73160-6202 | Oil & Gas Operator | Oct 2024 |
| 27321 | Silver Thread Oil & Gas, Inc. | | Oil & Gas Operator | Jul 2015 |
| 27322 | Silver Tusk Operating Co. LLC | Houston, TX 77056 | Oil & Gas Operator | Nov 2018 |
| 27323 | Silverado Oil Inc | Greeley, CO 80631 | Oil Operator | Apr 2000 |
| 27324 | Silverado Oil LTD | Ardmore, OK 73401 | Oil & Gas Operator | Jun 2003 |
| 27325 | Silverback Operating II, LLC | Oklahoma City, OK 73112 | Oil & Gas Operator | Feb 2025 |
| 27326 | Silverback Operating, LLC | San Antonio, TX 78257 | Oil & Gas Operator | Oct 2016 |
| 27327 | Silverbacq LLC | | Oil & Gas Operator | Dec 2024 |
| 27328 | Silverbow Resources Oper, LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2025 |
| 27329 | Silverbrook Operating II LLC | Barker, TX 77413 | Oil Operator | Apr 2025 |
| 27330 | Silverbrook Operating, LLC | Barker, TX 77413 | Oil Operator | Apr 2025 |
| 27331 | Silverridge Corp | Van Buren, AR 72956 | Oil & Gas Operator | Mar 2015 |
| 27332 | Silvertin Farm Production LLC | Tulsa, OK 74137 | Oil & Gas Operator | Apr 2020 |
| 27333 | Simar Petroleum, LLC | | Oil Operator | Dec 2024 |
| 27334 | Simasko Producti | | Oil Operator | Dec 1986 |
| 27335 | Simasko Production Co | Denver, CO 80204 | Oil & Gas Operator | Nov 1997 |
| 27336 | Simata Energy | Midland, TX 79708 | Oil & Gas Operator | Apr 2025 |
| 27337 | Simata Energy, LLC | Midland, TX 79708 | Oil & Gas Operator | Apr 2025 |
| 27338 | Simco Oil Company | | Oil Operator | Jul 1990 |
| 27339 | Simco Oil, LLC | Lytle, TX 78052 | Oil Operator | Apr 2025 |
| 27340 | Simco Operating | Shawnee, OK 74804-2501 | Oil Operator | Jan 2013 |
| 27341 | Simco Petroleum | Cheyenne, WY 82003 | Oil & Gas Operator | Oct 2009 |
| 27342 | Simcoe LLC | Durango, CO 81301 | Oil & Gas Operator | Feb 2025 |
| 27343 | Simcoe Oil Company | Scottsdale, AZ 85258-2553 | Oil & Gas Operator | May 2020 |
| 27344 | Simme, Steven | Elma, NY 14052 | Gas Operator | Dec 2023 |
| 27345 | Simminger, Robert John Jr | | Oil Operator | Dec 2024 |
| 27346 | Simmons Donald M | Muskogee, OK 74401 | Oil & Gas Operator | May 2013 |
| 27347 | Simmons Engr & Consulting Co | Farmington, NM 87499 | Gas Operator | Feb 2002 |
| 27348 | Simmons Evelyn B-Per Represent | Edmond, OK 73083-3610 | Oil & Gas Operator | Aug 1996 |
| 27349 | Simmons Mack McCoy | Cement, OK 73017 | Oil Operator | Feb 2025 |
| 27350 | Simmons Oil Corporation | | Oil Operator | Jan 1989 |
| 27351 | Simmons Robert Z | | Oil Operator | Dec 1990 |
| 27352 | Simmons, Inc.* D. J. | | Oil & Gas Operator | May 2020 |
| 27353 | Simmons, L.B. Energy, Inc. | Midland, TX 79705 | Oil & Gas Operator | Nov 2000 |
| 27354 | Simmons, Stanley J. | Olney, TX 76374 | Oil & Gas Operator | Aug 1994 |
| 27355 | Simon Joseph W | Carney, OK 74832-0443 | Oil & Gas Operator | Dec 2016 |
| 27356 | Simon Of Bolivar Enterprises Inc | Cuba, NY 14727 | Oil & Gas Operator | Dec 2023 |
| 27357 | Simon Oil Company | Ardmore, OK 73401-1045 | Oil Operator | Jan 2025 |
| 27358 | Simon Oil LLC | Kaycee, WY 82639 | Oil Operator | Jan 2025 |
| 27359 | Simon Royce & Joyce | Tecumseh, OK 74873-7341 | Oil Operator | Jun 2018 |
| 27360 | Simon, W. D. Oil Co. | Kermit, TX 79745 | Oil & Gas Operator | Apr 2025 |
| 27361 | Simple Operating LLC | Cross Plains, TX 76443 | Oil Operator | Apr 2025 |
| 27362 | Simples Oil International, LLC | Los Angeles, CA 90067 | Oil & Gas Operator | Apr 2025 |
| 27363 | Simpson B T Jr | Orlando, FL 32806 | Oil & Gas Operator | Dec 1986 |
| 27364 | Simpson Bros. Oil Co. | Odessa, TX 79760 | Oil & Gas Operator | Jan 2001 |
| 27365 | Simpson Bros. Oil Co.-Odessa | Odessa, TX 79760 | Oil & Gas Operator | Jan 2001 |
| 27366 | Simpson Gary H | Albion, PA 16401-8008 | Gas Operator | Dec 2014 |
| 27367 | Simpson Oil & Land Co. | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2025 |
| 27368 | Simpson Oil Company | Odessa, TX 79760 | Oil & Gas Operator | Oct 2004 |
| 27369 | Simpson Operating Services, LP | Ballinger, TX 76821 | Oil & Gas Operator | Apr 2025 |
| 27370 | Simpson Well Service, Inc. | | Oil Operator | Dec 1996 |
| 27371 | Simpson, A. E. | Electra, TX 76360 | Oil & Gas Operator | Dec 2006 |
| 27372 | Simray GP, LLC | Richardson, TX 75080 | Oil & Gas Operator | Dec 2015 |
| 27373 | Simray Oil & Gas, Inc. | Richardson, TX 75080 | Oil & Gas Operator | Sep 2003 |
| 27374 | Simray Operating Corp. | Richardson, TX 75080 | Oil & Gas Operator | Mar 2009 |
| 27375 | Simray Production Company LP | Richland, TX 75080 | Oil & Gas Operator | Dec 2010 |
| 27376 | Sims, John S. | Lawn, TX 79530 | Oil & Gas Operator | Aug 2003 |
| 27377 | Sinclair Development, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2025 |
| 27378 | Sinclair Energy Corporation | Fort Worth, TX 76177 | Oil & Gas Operator | Apr 2025 |
| 27379 | Sinclair Exploration Company | Abilene, TX 79604 | Oil & Gas Operator | Nov 1998 |
| 27380 | Sinclair Oil & Gas Company | Salt Lake Cty, UT 84130 | Oil & Gas Operator | Apr 2025 |
| 27381 | Sinclair Oil Corporation | Salt Lake Cty, UT 84130 | Oil & Gas Operator | Aug 2006 |
| 27382 | Singer Fleischaker Oil Op. Co. | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2002 |
| 27383 | Singer Joseph B Expl Co | Oklahoma City, OK 73118-7486 | Oil & Gas Operator | Mar 1993 |
| 27384 | Singer Oil Co LLC | Hennessey, OK 73742 | Oil & Gas Operator | Feb 2025 |
| 27385 | Singer Oil Company | Oklahoma City, OK 73148 | Oil & Gas Operator | Jan 2025 |
| 27386 | Singer-Fleischaker Oil Co Inc | | Oil & Gas Operator | Jul 1987 |
| 27387 | Singer-Fleischaker,Dillon | | Oil & Gas Operator | Aug 1979 |
| 27388 | Single Barrel Oil And Gas LLC | Granbury, TX 76048 | Oil & Gas Operator | Apr 2025 |
| 27389 | Singleton Investments, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Oct 2012 |
| 27390 | Singletree Resources Inc | | Oil & Gas Operator | Aug 2014 |
| 27391 | Sink Hole, Inc. | Levelland, TX 79336 | Oil & Gas Operator | Dec 2000 |
| 27392 | Sinkhole Solutions, LLC | Bowling Green, KY 42103 | Oil Operator | Dec 2021 |
| 27393 | Sinow, G. S. | Pampa, TX 79066 | Oil & Gas Operator | Oct 1995 |
| 27394 | Siosi Oil & Gas Company | Tulsa, OK 74170 | Oil & Gas Operator | Nov 2013 |
| 27395 | Sioux Gas Company | | Oil & Gas Operator | Dec 2021 |
| 27396 | Sip'S Oil & Gas Inc | Yukon, OK 73099 | Oil & Gas Operator | Apr 2025 |
| 27397 | Sipple Oil Co | Beattyville, KY 41311 | Oil Operator | Dec 2012 |
| 27398 | Sir Drake Oil And Gas Company | Corpus Chrsti, TX 78413 | Oil & Gas Operator | Sep 2022 |
| 27399 | Sirius Energy Corp. | Abilene, TX 79606 | Oil Operator | Dec 2009 |
| 27400 | Siroco Operating Co., Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2010 |