| 27001 | Shale Oil Co., Inc. | Liberty, TX 77575 | Oil & Gas Operator | Apr 2025 |
| 27002 | Shale Operating Co. | Dallas, TX 75356 | Oil & Gas Operator | Apr 2025 |
| 27003 | Shale Properties LLC | Kingfisher, OK 73750 | Oil Operator | Aug 2023 |
| 27004 | Shale Service, Inc. | | Oil & Gas Operator | Apr 2019 |
| 27005 | Shallow Energy Inc | South Dennis, MA 2660 | Oil & Gas Operator | Apr 2024 |
| 27006 | Shallow Production Oper, LLC | Austin, TX 78738 | Oil Operator | Apr 2025 |
| 27007 | Shamblin Stone Inc. | Dunbar, WV 25064-0510 | Gas Operator | Dec 2021 |
| 27008 | Shamrock Minerals Corporation | Merkel, TX 79536 | Oil & Gas Operator | Nov 1998 |
| 27009 | Shamrock Oil Co. | Sugar Land, TX 77478 | Oil & Gas Operator | Mar 2008 |
| 27010 | Shamrock Operating Company LLC | Cleveland, OK 74020 | Oil Operator | Aug 2022 |
| 27011 | Shamrock Texas Partners L.P. | San Angelo, TX 76904 | Oil & Gas Operator | Apr 2025 |
| 27012 | Shamrock Well Operations LLC | Oklahoma City, OK 73118-4015 | Oil & Gas Operator | Feb 2025 |
| 27013 | Shana Petroleum Company | Dallas, TX 75206 | Oil & Gas Operator | Aug 2002 |
| 27014 | Shanafelt Oil Operating, LLC | Jacksboro, TX 76458 | Oil Operator | Apr 2025 |
| 27015 | Shanafelt, Arthur | Jacksboro, TX 76458 | Oil & Gas Operator | May 2003 |
| 27016 | Shanahan Donald P | Ridgedale, MO 65739 | Oil & Gas Operator | Dec 1990 |
| 27017 | Shaner W G | Longmont, CO 80503 | Gas Operator | Dec 2021 |
| 27018 | Shanghai Energy Corporation | Houston, TX 77027 | Oil & Gas Operator | Apr 2003 |
| 27019 | Shanks Drilling & Production Company LLC | Bixby, OK 74008 | Oil & Gas Operator | Jan 2025 |
| 27020 | Shanks Robert "Bob" | Haskell, OK 74436-8809 | Oil & Gas Operator | Jun 2023 |
| 27021 | Shanks, Bob | Haskell, OK 74436 | Oil Operator | Sep 2002 |
| 27022 | Shannon Corporation Inc | Okmulgee, OK 74447-1323 | Oil & Gas Operator | Mar 2015 |
| 27023 | Shannon Energy | Liberal, KS 67901 | Oil & Gas Operator | Feb 1999 |
| 27024 | Shannon Petroleum Inc | Tulsa, OK 74136-4603 | Oil & Gas Operator | Oct 2016 |
| 27025 | Shannon Williams | | Oil Operator | Jan 1993 |
| 27026 | Shappell Oil Company | Holliday, TX 76366 | Oil & Gas Operator | Sep 2012 |
| 27027 | Shappell Oil Company, L.L.C. | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2025 |
| 27028 | Shar Alan Oil Company | | Oil & Gas Operator | Oct 2005 |
| 27029 | Sharber Billy Jack Operating | Konawa, OK 74849-0071 | Oil & Gas Operator | Mar 2015 |
| 27030 | Sharber Don E | Okemah, OK 74859-0322 | Oil Operator | Dec 2018 |
| 27031 | Sharber Production Inc | Konawa, OK 74849 | Oil & Gas Operator | Dec 2024 |
| 27032 | Share Petroleum Corp. | Mabank, TX 75147 | Oil Operator | Apr 2025 |
| 27033 | Sharkey Well Service Inc | | Oil Operator | Dec 2023 |
| 27034 | Sharoco Corporation | Fort Worth, TX 76121 | Oil & Gas Operator | Dec 1996 |
| 27035 | Sharon Hunter Resources, Inc. | Houston, TX 77056 | Oil & Gas Operator | Sep 2012 |
| 27036 | Sharon Oil Company Inc | | Oil Operator | Aug 1997 |
| 27037 | Sharon Resources | | Oil Operator | Sep 1995 |
| 27038 | Sharon Resources, Inc. | Houston, TX 77056 | Oil & Gas Operator | Aug 2010 |
| 27039 | Sharp Anthony G | Shawnee, OK 74802-1701 | Oil & Gas Operator | Jul 2003 |
| 27040 | Sharp Engineerin | | Oil Operator | Aug 1995 |
| 27041 | Sharp Image Energy, Inc. | Big Spring, TX 79721 | Oil & Gas Operator | Apr 2025 |
| 27042 | Sharp, Cherry L | Jacksboro, TX 76458 | Oil Operator | Apr 2025 |
| 27043 | Sharp, Harry D. | Leawood, KS 66209 | Oil Operator | May 1997 |
| 27044 | Sharp, John T. | Jacksboro, TX 76458 | Oil & Gas Operator | Jul 2014 |
| 27045 | Sharp, Robert L. &/Or Cindy | | Oil Operator | Nov 2019 |
| 27046 | Sharpe Energy Company | Conroe, TX 77305 | Oil & Gas Operator | Mar 2008 |
| 27047 | Sharples Phillip T Trust | Denver, CO 80264 | Oil & Gas Operator | Nov 2020 |
| 27048 | Shattuck SWD LLC | Shattuck, OK 73858-0848 | Oil Operator | Mar 2022 |
| 27049 | Shattuck, Frank E. & Carol D. | Eden, NY 14057 | Gas Operator | Dec 2023 |
| 27050 | Shaver Tommy L | Kingfisher, OK 73750-9612 | Oil & Gas Operator | Apr 2015 |
| 27051 | Shaw George R | | Oil & Gas Operator | Mar 1992 |
| 27052 | Shaw Robert Lesl | | Oil Operator | Oct 1989 |
| 27053 | Shaw Thomas P | Tulsa, OK 74105-7327 | Oil & Gas Operator | Mar 2015 |
| 27054 | Shaw, George R. (Deceased) | Wichita, KS 67202 | Gas Operator | Dec 2009 |
| 27055 | Shaw, Henry Jr. | Midland, TX 79702 | Oil & Gas Operator | Oct 2018 |
| 27056 | Shaw, T. G. Oil Company, LTD. | Fort Worth, TX 76113 | Oil & Gas Operator | Apr 2025 |
| 27057 | Shaw-Laird, LLC | | Oil & Gas Operator | Jan 2017 |
| 27058 | Shawmar Oil & Gas Co., Inc. | Sunnyvale, TX 75182 | Oil & Gas Operator | Dec 2023 |
| 27059 | Shawmar Oil Comp | | Oil & Gas Operator | Feb 1995 |
| 27060 | Shawmut Production Corporation | Pittsburgh, PA 15219-1913 | Oil & Gas Operator | Jan 2003 |
| 27061 | Shawnee Investment Company, Inc. | Council Grove, KS 66846 | Oil Operator | Apr 2002 |
| 27062 | Shawnee Oil & Development | Kevin, MT 59454 | Oil & Gas Operator | Oct 2010 |
| 27063 | Shawnee Oil Development Co Inc | | Oil & Gas Operator | Mar 2025 |
| 27064 | Shawver & Shawver | Graham, TX 76450 | Oil & Gas Operator | Apr 2025 |
| 27065 | Shawver & Son Inc | Oklahoma City, OK 73154-0778 | Oil & Gas Operator | Oct 2024 |
| 27066 | Shawver Energy Inc | Oklahoma City, OK 73154-0683 | Oil & Gas Operator | Apr 2014 |
| 27067 | Shea, Sidney & Phillips, Keri Eileen | | Gas Operator | Dec 2021 |
| 27068 | Shearer James I | Blairsville, PA 15717-0337 | Oil & Gas Operator | Dec 2003 |
| 27069 | Shearer Oil Company | Graham, TX 76450 | Oil & Gas Operator | May 2002 |
| 27070 | Shearer, Robert C | Barberton, OH 44203 | Oil & Gas Operator | Dec 2021 |
| 27071 | Shearhart, Gary L. | Havana, KS 67347 | Oil Operator | Oct 2001 |
| 27072 | Shebester Inc | Maysville, OK 73057 | Oil & Gas Operator | Nov 1998 |
| 27073 | Shed Oil Company | Electra, TX 76360 | Oil Operator | Apr 2025 |
| 27074 | Sheedy Energy Production Company | | Oil Operator | Dec 2024 |
| 27075 | Sheedy, John D. | North Tonawanda, NY 14120 | Gas Operator | Dec 2023 |
| 27076 | Sheel Oil Compan | | Oil Operator | Jan 1985 |
| 27077 | Sheer Energy, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2025 |
| 27078 | Sheets Exploration Co., Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Jul 2016 |
| 27079 | Sheets George M & Judith A | Tonkawa, OK 74653 | Oil & Gas Operator | Jan 2025 |
| 27080 | Sheets, P. A. | Breckenridge, TX 76424 | Oil & Gas Operator | Jun 1994 |
| 27081 | Sheffler Industries | Phoenix, AZ 85013 | Oil Operator | Aug 1999 |
| 27082 | Shefts & Shefts, Inc. | Luling, TX 78648 | Oil & Gas Operator | Apr 2025 |
| 27083 | Shelburne Oil Company | Oklahoma City, OK 73116-7639 | Gas Operator | Feb 2020 |
| 27084 | Shelby Boswell Operator, LLC | Dallas, TX 75225 | Oil & Gas Operator | Apr 2025 |
| 27085 | Shelby H. Loe, SR. Oil Co. | | Oil Operator | Jul 1989 |
| 27086 | Shelby Operating Company | Dallas, TX 75205 | Oil & Gas Operator | Apr 2025 |
| 27087 | Shelby Operating, Inc. | Flower Mound, TX 75028 | Oil & Gas Operator | Jul 1997 |
| 27088 | Shelby Production Co. | Kilgore, TX 75663 | Oil & Gas Operator | Mar 2009 |
| 27089 | Shelby Production, Inc. | Kilgore, TX 75663 | Gas Operator | Apr 2025 |
| 27090 | Shelby Resources LLC | Denver, CO 80207 | Oil & Gas Operator | Dec 2024 |
| 27091 | Shelby, Michael H. | Shreveport, LA 71101 | Oil & Gas Operator | Apr 2025 |
| 27092 | Shelco | Maysville, MO 64469 | Oil & Gas Operator | May 2021 |
| 27093 | Sheldon Brothers Agency | Salina, KS 67402 | Oil Operator | May 1998 |
| 27094 | Sheldon Resources, L.P. | Bryan, TX 77805 | Oil & Gas Operator | Apr 2025 |
| 27095 | Shelex Drilling Inc | Lexington, KY 40523 | Oil & Gas Operator | Dec 2024 |
| 27096 | Shelf Energy, LLC | | Oil & Gas Operator | Dec 2024 |
| 27097 | Shell Calif. Prod. Inc. | | Oil Operator | Dec 1980 |
| 27098 | Shell Frontier Oil & Gas Inc. | Houston, TX 77001 | Oil & Gas Operator | Feb 1997 |
| 27099 | Shell Land & Energy Co. | Houston, TX 77001 | Oil & Gas Operator | Feb 1997 |
| 27100 | Shell Offshore Inc. | New Orleans, LA 70161 | Oil & Gas Operator | Jan 2008 |