| 26401 | Serio Energy Corporation | | Oil & Gas Operator | Jul 2000 |
| 26402 | Serio Exploration Company | | Oil Operator | Jan 1992 |
| 26403 | Serio Oil Corp. | | Oil & Gas Operator | Sep 1991 |
| 26404 | Serio Operating Company | | Oil & Gas Operator | Mar 2007 |
| 26405 | Serio-Punches Oil Co | | Oil Operator | Jan 2008 |
| 26406 | Serna Inc. | Austin, TX 78733 | Oil Operator | Jul 2025 |
| 26407 | Serra Energy, Inc. | Hailey, ID 83333 | Oil & Gas Operator | May 2011 |
| 26408 | Servco Productio | | Oil Operator | Dec 1992 |
| 26409 | Service Clearing Corp | Dallas, TX 75229 | Oil & Gas Operator | Jul 2025 |
| 26410 | Service Drilling Co. | Tulsa, OK 74119 | Oil & Gas Operator | Oct 1998 |
| 26411 | Service Drilling Co., L.L.C. | Tulsa, OK 74119 | Oil & Gas Operator | Oct 2003 |
| 26412 | Service Production Company, Inc. | Santa Fe, TX 77510 | Oil & Gas Operator | May 1999 |
| 26413 | Ses Oil | | Oil Operator | Jun 2004 |
| 26414 | Ses Production | | Oil & Gas Operator | Oct 2023 |
| 26415 | Sescil, Douglas W. | Akron, NY 14001 | Gas Operator | Dec 2024 |
| 26416 | Sessions Billy C | Muskogee, OK 74401-5323 | Oil Operator | Apr 2007 |
| 26417 | Setab Prod. | Batson, TX 77519 | Oil & Gas Operator | Apr 2025 |
| 26418 | Setex Oil And Gas Company | Houston, TX 77002 | Oil & Gas Operator | Feb 2012 |
| 26419 | Setex Oil Company, L.P. | Houston, TX 77060 | Oil & Gas Operator | Jan 2000 |
| 26420 | Settco Oil & Gas | | Oil & Gas Operator | May 1994 |
| 26421 | Settlers Corporation | Oklahoma City, OK 73116 | Oil & Gas Operator | Nov 2000 |
| 26422 | Settlers Energy Corporation | Oklahoma City, OK 73113 | Oil & Gas Operator | Apr 1998 |
| 26423 | Sev Texas Operating, LLC | Long Beach, CA 90755 | Oil & Gas Operator | Jul 2025 |
| 26424 | Sevarg Company, Inc. | | Oil & Gas Operator | Feb 2016 |
| 26425 | Seven Cross Operating, LLC | Santa Anna, TX 76878 | Oil & Gas Operator | Jul 2025 |
| 26426 | Seven Falls Company | Dallas, TX 75201 | Oil & Gas Operator | May 2008 |
| 26427 | Seven Horses LLC | Alva, OK 73717-5004 | Oil & Gas Operator | May 2025 |
| 26428 | Seven J Oil Inc | Jenning, OK 74038-9729 | Oil & Gas Operator | Apr 2025 |
| 26429 | Seven Sisters Oil & Gas LLC | Casper, WY 82602 | Oil & Gas Operator | Jan 2022 |
| 26430 | Seven To One Oil & Gas LLC | Magnolia, OH 44643 | Oil & Gas Operator | Dec 2024 |
| 26431 | Seven Wells Oil & Gas Expl. | Abilene, TX 79601 | Oil & Gas Operator | Jun 2014 |
| 26432 | Sevenbar Resources, LLC | Hallettsville, TX 77964 | Oil & Gas Operator | Jul 2025 |
| 26433 | Seventh Corporation The | Oklahoma City, OK 73107 | Oil & Gas Operator | May 2006 |
| 26434 | Seventy Oil Co. | Freer, TX 78357 | Oil & Gas Operator | Mar 2002 |
| 26435 | Sevenx, LLC | Iowa Park, TX 76367 | Oil Operator | Jul 2025 |
| 26436 | Severtson, James C. | Allegany, NY 14706 | Oil & Gas Operator | Dec 2024 |
| 26437 | Sevitski & Associates Inc | Pryor, OK 74361 | Oil & Gas Operator | Dec 2000 |
| 26438 | Sewell Development Co Inc | | Oil & Gas Operator | Apr 1993 |
| 26439 | Sexton Oil Company | Camden, AR 71701 | Oil Operator | Apr 2024 |
| 26440 | Seydell, E. Morris | Wichita Falls, TX 76307 | Oil Operator | Feb 1993 |
| 26441 | Seymour Oil Co., Inc. | Edmond, OK 73025 | Oil & Gas Operator | Jul 2011 |
| 26442 | Seymour, James & Lorraine | Cut Bank, MT 59427 | Oil Operator | Jul 2022 |
| 26443 | Sfeop | Midland, TX 79701 | Oil & Gas Operator | Mar 1994 |
| 26444 | SFJV Enterprises, Inc. | Berclair, TX 78107 | Gas Operator | Aug 1998 |
| 26445 | SFM Holdings, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Jul 1995 |
| 26446 | SG Interests I LTD | Houston, TX 77007 | Oil & Gas Operator | Jun 2025 |
| 26447 | SG Interests, Inc. | Houston, TX 77010 | Oil & Gas Operator | Jun 2007 |
| 26448 | SGB Oil LLC | Luling, TX 78648 | Oil Operator | Jul 2025 |
| 26449 | Sgcu GP LLC | Casper, WY 82602 | Oil Operator | May 2025 |
| 26450 | SGP Operating LLC | Dallas, TX 75205 | Oil & Gas Operator | Jul 2025 |
| 26451 | SH Oil Operations LLC | Wichita, KS 67277 | Oil & Gas Operator | Mar 2025 |
| 26452 | Sha Stephens, Incorporated | Weatherford, TX 76087 | Oil & Gas Operator | Apr 2006 |
| 26453 | Sha-Jam Operating Corp. | Midland, TX 79701 | Oil & Gas Operator | Jul 2025 |
| 26454 | Shack, Bill | Albany, TX 76430 | Oil & Gas Operator | Apr 2006 |
| 26455 | Shackelford Oil Co | Midland, TX 79707 | Oil & Gas Operator | May 2025 |
| 26456 | Shackelford,Frank Oil Properties | Midland, TX 79701 | Oil & Gas Operator | Aug 1997 |
| 26457 | Shadawn Corporation | Wichita Falls, TX 76310 | Oil & Gas Operator | Mar 2005 |
| 26458 | Shadco | Worland, WY 82401 | Oil & Gas Operator | May 2025 |
| 26459 | Shade Tree Oil C | | Oil Operator | Oct 1987 |
| 26460 | Shadow Wolf Energy LLC | | Oil Operator | May 2025 |
| 26461 | Shadow-Del Oil Company | Kiefer, OK 74041-0453 | Oil & Gas Operator | Jul 2015 |
| 26462 | Shadowpeak Operating LLC | Oklahoma City, OK 73159-6905 | Oil & Gas Operator | Apr 2025 |
| 26463 | Shadrack Production Company | | Gas Operator | Dec 1982 |
| 26464 | Shady Oil Co. | Brownwood, TX 76801 | Oil & Gas Operator | Jul 2025 |
| 26465 | Shafer Berman J | Wooster, OH 44691 | Oil & Gas Operator | Dec 2000 |
| 26466 | Shafer David Oil Prod Inc | Wooster, OH 44691 | Oil & Gas Operator | Dec 2000 |
| 26467 | Shaffer Oil Co., Inc. | Burlington, KS 66839 | Oil & Gas Operator | Jul 2001 |
| 26468 | Shaffer Oil Leas | | Oil Operator | May 1993 |
| 26469 | Shag Bark Land And Cattle Co. LLC | Olean, NY 14760 | Oil & Gas Operator | Dec 2021 |
| 26470 | Shahan, Donald Allan | Abilene, TX 79602 | Oil Operator | Jul 2025 |
| 26471 | Shahara Oil LLC | Carlsbad, NM 88220 | Oil & Gas Operator | Oct 2000 |
| 26472 | Shaida, John H. | Wichita, KS 67226 | Oil & Gas Operator | Jul 2025 |
| 26473 | Shakespeare Oil Co Inc | Salem, IL 62881 | Oil & Gas Operator | May 2025 |
| 26474 | Shale Energy International, LLC | | Oil & Gas Operator | Nov 2024 |
| 26475 | Shale Energy LLC | Jeffersonville, KY 40337 | Oil Operator | Dec 2018 |
| 26476 | Shale Gas Production, LLC | Spencer, WV 25276 | Oil & Gas Operator | Dec 2021 |
| 26477 | Shale Hunter, LLC | Irving, TX 75039 | Oil & Gas Operator | Jan 2016 |
| 26478 | Shale Oil Co., Inc. | Liberty, TX 77575 | Oil & Gas Operator | Jul 2025 |
| 26479 | Shale Operating Co. | Dallas, TX 75356 | Oil & Gas Operator | Jul 2025 |
| 26480 | Shale Properties LLC | Kingfisher, OK 73750 | Oil Operator | Aug 2023 |
| 26481 | Shale Service, Inc. | | Oil & Gas Operator | Apr 2019 |
| 26482 | Shallow Energy Inc | South Dennis, MA 2660 | Oil & Gas Operator | Feb 2025 |
| 26483 | Shallow Production Oper, LLC | Austin, TX 78738 | Oil Operator | Jul 2025 |
| 26484 | Shamblin Stone Inc. | Dunbar, WV 25064-0510 | Gas Operator | Dec 2021 |
| 26485 | Shamrock Minerals Corporation | Merkel, TX 79536 | Oil & Gas Operator | Nov 1998 |
| 26486 | Shamrock Oil Co. | Sugar Land, TX 77478 | Oil & Gas Operator | Mar 2008 |
| 26487 | Shamrock Operating Company LLC | Cleveland, OK 74020 | Oil Operator | Aug 2022 |
| 26488 | Shamrock Texas Partners L.P. | San Angelo, TX 76904 | Oil & Gas Operator | Jul 2025 |
| 26489 | Shamrock Well Operations LLC | Oklahoma City, OK 73118-4015 | Oil & Gas Operator | May 2025 |
| 26490 | Shana Petroleum Company | Dallas, TX 75206 | Oil & Gas Operator | Aug 2002 |
| 26491 | Shanafelt Oil Operating, LLC | Jacksboro, TX 76458 | Oil Operator | Jul 2025 |
| 26492 | Shanafelt, Arthur | Jacksboro, TX 76458 | Oil & Gas Operator | May 2003 |
| 26493 | Shanahan Donald P | Ridgedale, MO 65739 | Oil & Gas Operator | Dec 1990 |
| 26494 | Shaner W G | Longmont, CO 80503 | Gas Operator | Dec 2021 |
| 26495 | Shanghai Energy Corporation | Houston, TX 77027 | Oil & Gas Operator | Apr 2003 |
| 26496 | Shanks Drilling & Production Company LLC | Bixby, OK 74008 | Oil & Gas Operator | Jan 2025 |
| 26497 | Shanks Robert "Bob" | Haskell, OK 74436-8809 | Oil & Gas Operator | Jun 2023 |
| 26498 | Shanks, Bob | Haskell, OK 74436 | Oil Operator | Sep 2002 |
| 26499 | Shannon Corporation Inc | Okmulgee, OK 74447-1323 | Oil & Gas Operator | Mar 2015 |
| 26500 | Shannon Energy | Liberal, KS 67901 | Oil & Gas Operator | Feb 1999 |