| 27401 | Shadco | Worland, WY 82401 | Oil & Gas Operator | Aug 2025 |
| 27402 | Shade Tree Oil C | | Oil Operator | Oct 1987 |
| 27403 | Shadow Wolf Energy LLC | | Oil Operator | Dec 2025 |
| 27404 | Shadow-Del Oil Company | Kiefer, OK 74041-0453 | Oil & Gas Operator | Jul 2015 |
| 27405 | Shadowpeak Operating LLC | Oklahoma City, OK 73159-6905 | Oil & Gas Operator | Nov 2025 |
| 27406 | Shadrack Production Company | | Gas Operator | Dec 1982 |
| 27407 | Shady Oil Co. | Brownwood, TX 76801 | Oil & Gas Operator | Feb 2026 |
| 27408 | Shafer Berman J | Wooster, OH 44691 | Oil & Gas Operator | Dec 2000 |
| 27409 | Shafer David Oil Prod Inc | Wooster, OH 44691 | Oil & Gas Operator | Dec 2000 |
| 27410 | Shaffer Oil Co., Inc. | Burlington, KS 66839 | Oil & Gas Operator | Jul 2001 |
| 27411 | Shaffer Oil Leas | | Oil Operator | May 1993 |
| 27412 | Shag Bark Land And Cattle Co. LLC | Olean, NY 14760 | Oil & Gas Operator | Dec 2021 |
| 27413 | Shahan, Donald Allan | Abilene, TX 79602 | Oil Operator | Feb 2026 |
| 27414 | Shahara Oil LLC | Carlsbad, NM 88220 | Oil & Gas Operator | Oct 2000 |
| 27415 | Shaida, John H. | Wichita, KS 67226 | Oil & Gas Operator | Feb 2026 |
| 27416 | Shakespeare Oil Co Inc | Salem, IL 62881 | Oil & Gas Operator | Dec 2025 |
| 27417 | Shale Energy International, LLC | | Oil & Gas Operator | Nov 2024 |
| 27418 | Shale Energy LLC | Jeffersonville, KY 40337 | Oil Operator | Dec 2018 |
| 27419 | Shale Gas Production, LLC | Spencer, WV 25276 | Oil & Gas Operator | Dec 2021 |
| 27420 | Shale Hunter, LLC | Irving, TX 75039 | Oil & Gas Operator | Jan 2016 |
| 27421 | Shale Oil Co., Inc. | Liberty, TX 77575 | Oil & Gas Operator | Feb 2026 |
| 27422 | Shale Operating Co. | Dallas, TX 75356 | Oil & Gas Operator | Feb 2026 |
| 27423 | Shale Properties LLC | Kingfisher, OK 73750 | Oil Operator | Aug 2023 |
| 27424 | Shale Service, Inc. | | Oil & Gas Operator | Apr 2019 |
| 27425 | Shallow Energy Inc | South Dennis, MA 2660 | Oil & Gas Operator | Feb 2025 |
| 27426 | Shallow Production Oper, LLC | Austin, TX 78738 | Oil Operator | Feb 2026 |
| 27427 | Shamrock Minerals Corporation | Merkel, TX 79536 | Oil & Gas Operator | Nov 1998 |
| 27428 | Shamrock Oil Co. | Sugar Land, TX 77478 | Oil & Gas Operator | Mar 2008 |
| 27429 | Shamrock Operating Company LLC | Cleveland, OK 74020 | Oil Operator | Aug 2022 |
| 27430 | Shamrock Texas Partners L.P. | San Angelo, TX 76904 | Oil & Gas Operator | Feb 2026 |
| 27431 | Shamrock Well Operations LLC | Oklahoma City, OK 73118-4015 | Oil & Gas Operator | Dec 2025 |
| 27432 | Shana Petroleum Company | Dallas, TX 75206 | Oil & Gas Operator | Aug 2002 |
| 27433 | Shanafelt Oil Operating, LLC | Jacksboro, TX 76458 | Oil Operator | Feb 2026 |
| 27434 | Shanafelt, Arthur | Jacksboro, TX 76458 | Oil & Gas Operator | May 2003 |
| 27435 | Shanahan Donald P | Ridgedale, MO 65739 | Oil & Gas Operator | Dec 1990 |
| 27436 | Shaner W G | Longmont, CO 80503 | Gas Operator | Dec 2021 |
| 27437 | Shanghai Energy Corporation | Houston, TX 77027 | Oil & Gas Operator | Apr 2003 |
| 27438 | Shanks Drilling & Production Company LLC | Bixby, OK 74008 | Oil & Gas Operator | Aug 2025 |
| 27439 | Shanks Robert "Bob" | Haskell, OK 74436-8809 | Oil & Gas Operator | Jun 2023 |
| 27440 | Shanks, Bob | Haskell, OK 74436 | Oil Operator | Sep 2002 |
| 27441 | Shannon Corporation Inc | Okmulgee, OK 74447-1323 | Oil & Gas Operator | Mar 2015 |
| 27442 | Shannon Energy | Liberal, KS 67901 | Oil & Gas Operator | Feb 1999 |
| 27443 | Shannon Petroleum Inc | Tulsa, OK 74136-4603 | Oil & Gas Operator | Oct 2016 |
| 27444 | Shannon Williams | | Oil Operator | Jan 1993 |
| 27445 | Shappell Oil Company | Holliday, TX 76366 | Oil & Gas Operator | Sep 2012 |
| 27446 | Shappell Oil Company, L.L.C. | Harrisonburg, LA 71340 | Oil & Gas Operator | Feb 2026 |
| 27447 | Shar Alan Oil Company | | Oil & Gas Operator | Oct 2005 |
| 27448 | Sharber Billy Jack Operating | Konawa, OK 74849-0071 | Oil & Gas Operator | Mar 2015 |
| 27449 | Sharber Don E | Okemah, OK 74859-0322 | Oil Operator | Dec 2018 |
| 27450 | Sharber Production Inc | Konawa, OK 74849 | Oil & Gas Operator | Dec 2024 |
| 27451 | Share Petroleum Corp. | Mabank, TX 75147 | Oil Operator | Feb 2026 |
| 27452 | Sharkey Well Service Inc | | Oil Operator | Dec 2023 |
| 27453 | Sharoco Corporation | Fort Worth, TX 76121 | Oil & Gas Operator | Dec 1996 |
| 27454 | Sharon Hunter Resources, Inc. | Houston, TX 77056 | Oil & Gas Operator | Sep 2012 |
| 27455 | Sharon Resources | | Oil Operator | Sep 1995 |
| 27456 | Sharon Resources, Inc. | Houston, TX 77056 | Oil & Gas Operator | Aug 2010 |
| 27457 | Sharp Anthony G | Shawnee, OK 74802-1701 | Oil & Gas Operator | Jul 2003 |
| 27458 | Sharp Engineerin | | Oil Operator | Aug 1995 |
| 27459 | Sharp Image Energy, Inc. | Big Spring, TX 79721 | Oil & Gas Operator | Feb 2026 |
| 27460 | Sharp Lindell R | Huntington, AR 72940 | Gas Operator | Mar 2021 |
| 27461 | Sharp, Cherry L | Jacksboro, TX 76458 | Oil Operator | Feb 2026 |
| 27462 | Sharp, Harry D. | Leawood, KS 66209 | Oil Operator | May 1997 |
| 27463 | Sharp, John T. | Jacksboro, TX 76458 | Oil & Gas Operator | Jul 2014 |
| 27464 | Sharp, Robert L. &/Or Cindy | | Oil Operator | Nov 2019 |
| 27465 | Sharpe Energy Company | Conroe, TX 77305 | Oil & Gas Operator | Mar 2008 |
| 27466 | Sharples Oil Co | | Oil & Gas Operator | May 1965 |
| 27467 | Sharples Phillip T Trust | Denver, CO 80264 | Oil & Gas Operator | Nov 2020 |
| 27468 | Shattuck SWD LLC | Shattuck, OK 73858-0848 | Oil Operator | Mar 2022 |
| 27469 | Shattuck, Frank E. & Carol D. | Eden, NY 14057 | Gas Operator | Dec 2024 |
| 27470 | Shaver Tommy L | Kingfisher, OK 73750-9612 | Oil & Gas Operator | Apr 2015 |
| 27471 | Shaw George R | | Oil & Gas Operator | Mar 1992 |
| 27472 | Shaw Robert Lesl | | Oil Operator | Oct 1989 |
| 27473 | Shaw Thomas P | Tulsa, OK 74105-7327 | Oil & Gas Operator | Mar 2015 |
| 27474 | Shaw, George R. (Deceased) | Wichita, KS 67202 | Gas Operator | Dec 2009 |
| 27475 | Shaw, Henry Jr. | Midland, TX 79702 | Oil & Gas Operator | Oct 2018 |
| 27476 | Shaw, T. G. Oil Company, LTD. | Fort Worth, TX 76113 | Oil & Gas Operator | Feb 2026 |
| 27477 | Shaw-Laird, LLC | | Oil & Gas Operator | Jan 2017 |
| 27478 | Shawmar Oil & Gas | | Gas Operator | Nov 2018 |
| 27479 | Shawmar Oil & Gas Co., Inc. | Sunnyvale, TX 75182 | Oil & Gas Operator | Dec 2023 |
| 27480 | Shawmar Oil Comp | | Oil & Gas Operator | Feb 1995 |
| 27481 | Shawmut Production Corporation | Pittsburgh, PA 15219-1913 | Oil & Gas Operator | Jan 2003 |
| 27482 | Shawnee Energy Development, Inc. | Graham, TX 76450 | Oil & Gas Operator | May 1998 |
| 27483 | Shawnee Investment Company, Inc. | Council Grove, KS 66846 | Oil Operator | Apr 2002 |
| 27484 | Shawnee Oil Development Co Inc | | Oil & Gas Operator | Dec 2025 |
| 27485 | Shawver & Shawver | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 27486 | Shawver & Son Inc | Oklahoma City, OK 73154-0778 | Oil & Gas Operator | Oct 2024 |
| 27487 | Shawver Energy Inc | Oklahoma City, OK 73154-0683 | Oil & Gas Operator | Apr 2014 |
| 27488 | Shearer James I | Blairsville, PA 15717-0337 | Oil & Gas Operator | Dec 2003 |
| 27489 | Shearer Oil Company | Graham, TX 76450 | Oil & Gas Operator | May 2002 |
| 27490 | Shearer, Robert C | Canal Fulton, OH 44614-9730 | Oil & Gas Operator | Dec 2021 |
| 27491 | Shearhart, Gary L. | Havana, KS 67347 | Oil Operator | Oct 2001 |
| 27492 | Shebester Inc | Maysville, OK 73057 | Oil & Gas Operator | Nov 1998 |
| 27493 | Shed Oil Company | Electra, TX 76360 | Oil Operator | Feb 2026 |
| 27494 | Sheedy Energy Production Company | | Oil Operator | Sep 2025 |
| 27495 | Sheedy, John D. | North Tonawanda, NY 14120 | Gas Operator | Dec 2024 |
| 27496 | Sheel Oil Compan | | Oil Operator | Jan 1985 |
| 27497 | Sheer Energy, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Feb 2026 |
| 27498 | Sheets Exploration Co., Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Jul 2016 |
| 27499 | Sheets George M & Judith A | Tonkawa, OK 74653 | Oil & Gas Operator | Nov 2025 |
| 27500 | Sheets, P. A. | Breckenridge, TX 76424 | Oil & Gas Operator | Jun 1994 |