| 26001 | Shoreline Pipeline Corporation | | Oil Operator | Dec 2020 |
| 26002 | Shoreline Production Serv., Inc. | Rockport, TX 78381 | Oil & Gas Operator | Apr 2002 |
| 26003 | Shoreline Southeast LLC | Lafayette, LA 70508 | Oil & Gas Operator | Jun 2017 |
| 26004 | Shorewood Farms | Lakeview, NY 14085 | Gas Operator | Dec 2022 |
| 26005 | Short Oil Co | Luling, TX 78648 | Oil & Gas Operator | Jan 2024 |
| 26006 | Short W D Oil Co | | Oil Operator | Mar 1996 |
| 26007 | Short W D Oil Company LLC | | Oil Operator | Jan 2024 |
| 26008 | Short W D Revocable Trust | Oxford, KS 67119-0729 | Oil & Gas Operator | Mar 2015 |
| 26009 | Short, Dan | | Oil Operator | Dec 1963 |
| 26010 | Shortgrass Petroleum Inc | Laverne, OK 73848-0139 | Oil & Gas Operator | Jan 2024 |
| 26011 | Shorts Production LLC | Havana, KS 67347 | Oil Operator | Jan 2024 |
| 26012 | Shoshone Oil And Gas Inc | Lindsay, OK 73052-0217 | Oil & Gas Operator | Jan 2020 |
| 26013 | Shoshone Oil Company | Dallas, TX 75244 | Oil & Gas Operator | May 1994 |
| 26014 | Shoshone Oil Corp. | | Oil & Gas Operator | Dec 2005 |
| 26015 | Shouse, Micheal C. | Liberty, MO 64068 | Oil & Gas Operator | Jan 1996 |
| 26016 | Showdown Energy Corporation | Dallas, TX 75230 | Oil & Gas Operator | Aug 2003 |
| 26017 | Showdown Operating, Inc. | Dallas, TX 75230 | Oil & Gas Operator | May 1996 |
| 26018 | Showhorn Holding Co., L.L.C. | Normangee, TX 77871 | Oil Operator | May 2024 |
| 26019 | Shrider W E Co | Newark, OH 43055 | Oil & Gas Operator | Dec 1991 |
| 26020 | Shriver Earl J | Lawton, OK 73507-5851 | Oil & Gas Operator | Aug 2013 |
| 26021 | Shriver Operating LLC | Lawton, OK 73507-5851 | Oil & Gas Operator | Feb 2024 |
| 26022 | SHS Operating Company | Shreveport, LA 71149 | Oil & Gas Operator | Dec 2023 |
| 26023 | Shubuta Oil Corporation | Houston, TX 77056 | Oil & Gas Operator | Sep 1998 |
| 26024 | Shufflin Energy | | Oil & Gas Operator | Sep 2011 |
| 26025 | Shuler Drilling Co., Inc. | El Dorado, AR 71730 | Oil & Gas Operator | Feb 2024 |
| 26026 | Shultz, Melvin W. | Parsons, KS 67357 | Oil Operator | Nov 1995 |
| 26027 | Shultz, Todd W. | Limestone, NY 14753 | Oil & Gas Operator | Dec 2022 |
| 26028 | Shulz-Hill-Swank | | Oil Operator | Dec 2022 |
| 26029 | Shumate, Jess | Brookesmith, TX 76827 | Oil Operator | Jun 2006 |
| 26030 | Shuteston Oil & Gas | | Oil & Gas Operator | Sep 1997 |
| 26031 | SHWJ Oil & Gas Co., Inc. | Oil City, LA 71061 | Oil Operator | May 2024 |
| 26032 | Siana Oil & Gas | Pearland, TX 77581 | Oil & Gas Operator | May 2024 |
| 26033 | Siana Oil & Gas., L.L.C | | Oil & Gas Operator | Dec 2021 |
| 26034 | Siana Operating LLC | Conroe, TX 77305224 | Oil & Gas Operator | May 2017 |
| 26035 | Sicko Jaquetta Len | Muldoon, TX 78949 | Oil Operator | Nov 2023 |
| 26036 | Sideline Oil & Gas, L.P. | Friendswood, TX 77549 | Oil Operator | May 2024 |
| 26037 | Sidney E. Pinkston, Jr, Trustee | | Oil & Gas Operator | Apr 1980 |
| 26038 | Sidney Lanier | Midland, TX BADADDR | Oil & Gas Operator | Jan 1996 |
| 26039 | Sidwell Oil & Ga | | Oil & Gas Operator | May 1993 |
| 26040 | Sidwell Oil & Gas, Inc. | Amarillo, TX 79105 | Oil & Gas Operator | Sep 2014 |
| 26041 | Sidwell Operating Company, L.P. | Amarillo, TX 79105 | Oil & Gas Operator | May 2024 |
| 26042 | Sidwell Theodore R Jr | Thornville, OH 43076-0839-0839 | Oil & Gas Operator | Dec 1988 |
| 26043 | Sieg Energy, Inc. | Ottawa, KS 66067 | Oil Operator | Nov 2023 |
| 26044 | Siegfried R H In | | Oil Operator | Apr 1985 |
| 26045 | Siegfried R H Inc | Tulsa, OK 74104 | Oil & Gas Operator | Mar 2008 |
| 26046 | Siempre Energy Operating, LLC | Houston, TX 77094 | Oil Operator | May 2024 |
| 26047 | Siemsen Operating, LLC | Holyrood, KS 67450 | Oil Operator | Dec 2023 |
| 26048 | Sien Operating Company, LLC | San Antonio, TX 78209 | Oil Operator | May 2023 |
| 26049 | Sierra Blanca Operating Company | Cleburne, TX BADADDR | Oil & Gas Operator | May 1999 |
| 26050 | Sierra Drilling | | Oil Operator | Sep 1988 |
| 26051 | Sierra Exploration Company | San Antonio, TX 78209 | Oil & Gas Operator | Mar 2008 |
| 26052 | Sierra Group, L.L.C. | San Angelo, TX 76904 | Oil & Gas Operator | May 2024 |
| 26053 | Sierra Industries, Inc. | | Oil & Gas Operator | Apr 1989 |
| 26054 | Sierra Lima Oil & Gas, LLC | Lubbock, TX 79453 | Oil & Gas Operator | May 2024 |
| 26055 | Sierra Madre LLC | Greensburg, KS 67054 | Oil & Gas Operator | May 2015 |
| 26056 | Sierra Madre Natural Res., LLC | Dallas, TX 75225 | Oil & Gas Operator | Dec 2016 |
| 26057 | Sierra Minerals, Inc. | Rockdale, TX 76567 | Oil & Gas Operator | May 2024 |
| 26058 | Sierra Oil Company | Fort Worth, TX 76106 | Oil & Gas Operator | May 2024 |
| 26059 | Sierra Petroleum | | Oil & Gas Operator | Sep 1986 |
| 26060 | Sierra Production Company | | Oil & Gas Operator | May 1986 |
| 26061 | Sierra Reserve Company | | Oil Operator | Dec 1985 |
| 26062 | Sierra Resources, Inc. | Oklahoma City, OK 73142 | Oil & Gas Operator | Mar 2024 |
| 26063 | Sierra Resources, LLC | Houston, TX 77219 | Oil & Gas Operator | Aug 2021 |
| 26064 | Sierra Trading Corporation | | Oil & Gas Operator | Sep 1978 |
| 26065 | Siete Oil And Gas Corporation | Midland, TX 79702 | Oil & Gas Operator | Aug 2003 |
| 26066 | Sigma Corporation | Charleston, WV 25301-0000 | Gas Operator | Dec 2021 |
| 26067 | Sigma Energy & Explor., Co LLC | Ozona, TX 76943 | Oil & Gas Operator | Feb 2010 |
| 26068 | Sigma Energy, LLC | | Oil Operator | Jan 2024 |
| 26069 | Sigma Oper & Develop Co., Inc. | Midland, TX 79701 | Oil & Gas Operator | May 2024 |
| 26070 | Sigmon Construction Co., Inc. | Kilgore, TX 75663 | Oil & Gas Operator | May 2024 |
| 26071 | Sigmon Production Company, Inc. | Longview, TX 75608 | Oil & Gas Operator | Dec 2013 |
| 26072 | Signal Hill Company LLC | Cody, WY 82414 | Oil & Gas Operator | Mar 2024 |
| 26073 | Signal Hill Expl & Pet Inc | Duncan, OK 73533 | Oil & Gas Operator | Mar 2015 |
| 26074 | Signal Hill Petroleum Inc. | | Oil & Gas Operator | Mar 2024 |
| 26075 | Signal Oil And Gas Company | Colleyville, TX 76034 | Oil & Gas Operator | May 2024 |
| 26076 | Signal Oil Company, LLC | Kilgore, TX 75663 | Oil & Gas Operator | May 2024 |
| 26077 | Signal Petroleum | | Oil & Gas Operator | Jul 1980 |
| 26078 | Signal, LLC | | Oil & Gas Operator | Feb 2024 |
| 26079 | Signal, LLC Of Mississippi | | Oil & Gas Operator | Dec 2023 |
| 26080 | Signature Exploration Inc. | Shawnee, OK 74804-4130 | Oil & Gas Operator | Mar 2015 |
| 26081 | Sikes Oil Company Inc | Velma, OK 73091-0759 | Oil & Gas Operator | Jan 2014 |
| 26082 | Sikes Operating, Inc. | Tyler, TX 75711 | Oil & Gas Operator | Jun 2003 |
| 26083 | Sikes, Arlas M. | Brownwood, TX 76801 | Oil & Gas Operator | May 2000 |
| 26084 | Silberman A & M Oil | Oklahoma City, OK 73122-3096 | Oil & Gas Operator | Apr 2014 |
| 26085 | Silent Stone Energy LLC | | Oil & Gas Operator | Jan 2024 |
| 26086 | Silhan, Terry | Marion, KS 66861 | Oil & Gas Operator | Dec 2009 |
| 26087 | Sills Oil Co | Osage, OK 74054 | Oil Operator | Aug 2023 |
| 26088 | Siltstone Resources Op II, LLC | Wilmington, DE 19801 | Oil & Gas Operator | May 2024 |
| 26089 | Silvco Energy, LLC | | Oil Operator | Apr 2014 |
| 26090 | Silver Creek Oil | Merkel, TX 79536 | Oil & Gas Operator | Aug 2003 |
| 26091 | Silver Creek Oil & Gas, Inc. | Wichita, KS 67203 | Oil Operator | Dec 1997 |
| 26092 | Silver Creek Oil & Gas, LLC | Flower Mound, TX 75022 | Oil & Gas Operator | May 2024 |
| 26093 | Silver Creek Permian Op Co, LLC | Irving, TX 75038 | Oil & Gas Operator | Apr 2023 |
| 26094 | Silver Creek Resources, LLC | Irving, TX 75038 | Oil & Gas Operator | Apr 2017 |
| 26095 | Silver Cross Energy Partners LLC | Richmond, TX 77469 | Oil & Gas Operator | May 2024 |
| 26096 | Silver Eagle Oil Company | Ada, OK 74820 | Oil Operator | Dec 2004 |
| 26097 | Silver Exploration Company | | Oil & Gas Operator | Mar 2024 |
| 26098 | Silver Fox Oil & Gas LLC | Hebbronville, TX 78361 | Oil & Gas Operator | May 2024 |
| 26099 | Silver Hill Energy Operating LLC | Dallas, TX 75201 | Oil & Gas Operator | May 2024 |
| 26100 | Silver Hill Energy Partners, LLC | Dallas, TX 75219 | Oil & Gas Operator | Feb 2017 |