| 401 | Santa Maria Energy LLC | | Oil & Gas Operator | Dec 2024 |
| 402 | Santa Rita Resources Inc & Subs | | Oil & Gas Operator | Mar 2015 |
| 403 | Santa Rosa Operating, LLC | Corpus Christ, TX 78411 | Oil & Gas Operator | Jun 2026 |
| 404 | Santa Rosa Petroleum LLC | Recluse, WY 82725 | Oil & Gas Operator | Feb 2026 |
| 405 | Santana Energy Services, LLC | Baton Rouge, LA 70809 | Oil & Gas Operator | Jun 2026 |
| 406 | Santana Exploration, Inc. | | Oil & Gas Operator | Dec 1985 |
| 407 | Sante Fe Minerals | | Oil & Gas Operator | Dec 1987 |
| 408 | Santerra Oil & Gas, Inc. | Seagoville, TX 75159 | Oil & Gas Operator | Jun 2026 |
| 409 | Santo Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Jun 2026 |
| 410 | Santo Petroleum LLC | Artesia, NM 88211 | Oil & Gas Operator | Sep 2024 |
| 411 | Santo Resources Inc | Oklahoma City, OK 73154 | Oil & Gas Operator | Nov 1998 |
| 412 | Santos USA Corp. | Houston, TX 77042 | Oil & Gas Operator | Dec 2008 |
| 413 | Sapient Energy Corp | Oklahoma City, OK 73154 | Oil & Gas Operator | Jan 2002 |
| 414 | Sappington Carol J | | Oil Operator | Mar 2017 |
| 415 | Sappington Crude Oil Inc | | Oil & Gas Operator | Dec 2025 |
| 416 | Sappington Henry | | Oil Operator | Dec 2010 |
| 417 | Sappington Walter B | | Oil Operator | Dec 2025 |
| 418 | Sappington Walter B Dianne M | | Oil Operator | Dec 2025 |
| 419 | Saqus Oil Co | Oklahoma City, OK 73107 | Oil & Gas Operator | May 2001 |
| 420 | Sara Jenny Energy Inc | Chesterland, OH 44026 | Oil & Gas Operator | Dec 2025 |
| 421 | Saratoga Energy Corporation | Sourlake, TX 77659 | Oil & Gas Operator | Dec 2004 |
| 422 | Saratoga Oil Company | Batson, TX 77519 | Oil & Gas Operator | Jun 2026 |
| 423 | Saratoga Production Company LLC | Sourlake, TX 77659 | Oil Operator | Jun 2026 |
| 424 | Saratoga Resources, Inc. | Houston, TX 77077 | Oil & Gas Operator | Jul 1994 |
| 425 | Sardis Gas, LLC | Mineral Wells, WV 26150 | Oil & Gas Operator | Dec 2024 |
| 426 | Sargeco, Inc. | Pampa, TX 79065 | Oil & Gas Operator | Sep 2018 |
| 427 | Sargent Oil & Gas Company | | Oil & Gas Operator | Dec 2022 |
| 428 | Sargent, Jo Ann | Holliday, TX 76366 | Oil & Gas Operator | Aug 2003 |
| 429 | Sarita Energy Resources, LTD. | Houston, TX 77277 | Oil & Gas Operator | Jun 2026 |
| 430 | Sarita Oil & Gas | Boerne, TX 78006 | Oil & Gas Operator | Jul 2024 |
| 431 | Sarrita Oil Co., Inc. | Floresville, TX 78114 | Oil & Gas Operator | Jul 2002 |
| 432 | Sarver, Danny & Meador, Steve | Adolphus, KY 42120 | Oil Operator | Dec 2019 |
| 433 | Sarvis Permian Land Fund I SC, LLC | Denver, CO 80202 | Oil & Gas Operator | Apr 2026 |
| 434 | Sarvis Permian Land Fund I, LLC | Denver, CO 80202 | Gas Operator | Apr 2026 |
| 435 | Sasakwa Operating LLC | Oklahoma City, OK 73179-1902 | Oil & Gas Operator | Jan 2026 |
| 436 | Sasha Petroleum, Inc | | Oil Operator | Jan 1986 |
| 437 | Sassco Petroleum, Inc. | Austin, TX 78763 | Oil & Gas Operator | Feb 2000 |
| 438 | Sasser Company Inc (The) | Perkins, OK 74059-0515 | Oil & Gas Operator | Jan 2026 |
| 439 | Satanta Oil Company | Midland, TX 79704 | Oil & Gas Operator | Jun 2026 |
| 440 | Satchell Creek Petroleum, LLC | Wichita, KS 67205 | Oil Operator | Jul 2024 |
| 441 | Satex Energy, Inc. | San Antonio, TX 78216 | Oil & Gas Operator | Aug 2003 |
| 442 | Saturn Oil And Development Corp. | Carlsbad, NM 88220 | Oil & Gas Operator | Jun 2026 |
| 443 | Saturn Resources Corp | Springboro, OH 45066 | Oil & Gas Operator | Dec 1998 |
| 444 | Sauby, Warren | Kevin, MT 59454 | Oil Operator | Feb 2009 |
| 445 | Sauder Earl W | | Oil & Gas Operator | Jan 1992 |
| 446 | Sauder George E | | Oil Operator | Nov 1996 |
| 447 | Sauder Management Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Jun 2026 |
| 448 | Sauder Oil Co., LLC | Madison, KS 66860 | Oil Operator | Feb 2026 |
| 449 | Sauder, Earl W. (Deceased) | Emporia, KS 66801 | Oil & Gas Operator | Nov 1997 |
| 450 | Sauer Bill Oil & Gas Company LLC | Casper, WY 82604 | Oil & Gas Operator | Jun 1999 |
| 451 | Saur, Jerry | Luling, TX 78648 | Oil & Gas Operator | Dec 2015 |
| 452 | Sauter Operating Co LLC | Nowata, OK 74048-4023 | Oil Operator | Feb 2026 |
| 453 | Sauvage W W Inco | | Oil Operator | Nov 1989 |
| 454 | Savage Exploration, Inc. | San Marcos, TX 78666 | Oil & Gas Operator | Jun 2026 |
| 455 | Savage James F | | Oil Operator | Dec 1996 |
| 456 | Savannah Joint Ventures | | Oil & Gas Operator | Nov 2000 |
| 457 | Savannah Oil And Gas, L. L. C. | | Oil & Gas Operator | Oct 1998 |
| 458 | Savannah Oil Co. | Jefferson, TX 75657 | Oil & Gas Operator | Nov 2007 |
| 459 | Savannah Ross And Company, LLC | Graham, TX 76450 | Oil & Gas Operator | Jun 2026 |
| 460 | Savant Alaska LLC. | | Oil & Gas Operator | Feb 2021 |
| 461 | Savant Energy Corporation | | Oil & Gas Operator | Mar 2012 |
| 462 | Saved By Grace Plugging, LLC | Tuscola, TX 79562 | Oil & Gas Operator | Dec 2018 |
| 463 | Savior Oil Company | Allen, TX 75013 | Oil Operator | Nov 2015 |
| 464 | Savoy Energy LP | Traverse City, MI 49685-1560 | Oil & Gas Operator | Apr 2026 |
| 465 | Savoy Energy, LLC | Ephraim, UT 84627 | Gas Operator | Apr 2026 |
| 466 | Savoy Exploration Inc | | Oil & Gas Operator | Feb 2020 |
| 467 | Sawdust Oil Comp | | Oil & Gas Operator | May 1987 |
| 468 | Sawtooth Operating Co., Inc. | Houston, TX 77024 | Oil & Gas Operator | Jun 2026 |
| 469 | Sawtooth, Inc. | Houston, TX 77024 | Oil & Gas Operator | Dec 2013 |
| 470 | Sawyer Drilling & Service Inc. | | Oil & Gas Operator | Oct 2004 |
| 471 | Sawyer Energy, Inc. | | Oil & Gas Operator | May 1997 |
| 472 | Sawyer Oil & Gas LLC | Kilgore, TX 75663 | Oil Operator | Jun 2026 |
| 473 | Saxet Energy, LTD. | Houston, TX 77057 | Oil & Gas Operator | Mar 2004 |
| 474 | Saxet Exploration Ent. Co., Inc. | Austin, TX 78731 | Oil Operator | Jun 2026 |
| 475 | Saxet Oil Corporation | Midland, TX 79708 | Oil & Gas Operator | Jun 2026 |
| 476 | Saxet Operating Co.,Inc. | Madisonville, TX 77864 | Oil & Gas Operator | Jun 2026 |
| 477 | Saxet Petroleum, Inc. | Houston, TX 77057 | Oil & Gas Operator | Jun 2026 |
| 478 | Saxon Oil & Gas Expl., Inc. | | Gas Operator | Nov 1989 |
| 479 | Saxon Oil Company | Dallas, TX 75204 | Oil & Gas Operator | Oct 2009 |
| 480 | Saxton, Richard W. | Union Springs, NY 13160 | Gas Operator | Dec 2024 |
| 481 | Saxum Oil & Gas, LLC | Beeville, TX 78104 | Oil & Gas Operator | Jun 2026 |
| 482 | Saxum Opco, LLC | Dallas, TX 75225 | Oil & Gas Operator | Jun 2026 |
| 483 | Say Energy Inc. | | Oil & Gas Operator | Dec 2004 |
| 484 | Saye Petroleum, Inc. | | Oil & Gas Operator | Apr 1995 |
| 485 | Sayers Operating Company | Midland, TX 79705 | Oil & Gas Operator | Feb 2005 |
| 486 | Sayes Drilling Inc. | | Oil Operator | May 1987 |
| 487 | Saylor Weldon W | Tulsa, OK 74105-5325 | Gas Operator | Dec 1994 |
| 488 | SBG Resources Group LLC | Frisco, TX 75035 | Oil Operator | Jun 2026 |
| 489 | SBJ Energy Partners, L.L.C. | Waco, TX 76710 | Oil & Gas Operator | Jun 2026 |
| 490 | SBJ Oil & Gas | MC Camey, TX 79752 | Oil & Gas Operator | Feb 2009 |
| 491 | SBJ Oil & Gas, LLC | Iraan, TX 79744 | Oil & Gas Operator | Jun 2026 |
| 492 | SBKF, LLC | Smithfield, RI 02917 | Oil & Gas Operator | Mar 2026 |
| 493 | SBM Operating Company Inc. | | Gas Operator | Sep 1997 |
| 494 | Sboc LLC | Hallett, OK 74034 | Oil Operator | Mar 2026 |
| 495 | Sbog, LLC | Granbury, TX 76048 | Oil & Gas Operator | Feb 2021 |
| 496 | SBR Oil LLC | Ada, OK 74821 | Oil Operator | Sep 2025 |
| 497 | SBS Oil Company | Austin, TX 78749 | Oil & Gas Operator | Jun 2026 |
| 498 | Scala Energy Operating, LLC | Midland, TX 79701 | Oil & Gas Operator | Oct 2023 |
| 499 | Scambler Energy Group LTD Co | Colony, OK 73021 | Oil & Gas Operator | Mar 2026 |
| 500 | Scan Gas, Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 2004 |