| 10001 | San Marco Petroleum Inc | Denver, CO 80293 | Oil & Gas Operator | Dec 2025 |
| 10002 | San Patricio Corporation | Dinero, TX 78350 | Oil & Gas Operator | Sep 2003 |
| 10003 | Sanchez Exploration Company LLC | Houston, TX 77056 | Oil & Gas Operator | Oct 2024 |
| 10004 | Sanchez Oil & Gas Corporation | Houston, TX 77056 | Oil & Gas Operator | Feb 2026 |
| 10005 | Sanchez Production, LLC | Pampa, TX 79065 | Oil & Gas Operator | Feb 2026 |
| 10006 | Sanchez-O'Brien Oil & Gas Corp | Houston, TX 77057 | Oil & Gas Operator | May 1998 |
| 10007 | Sanco Operating Company | Bullard, TX 75757 | Oil & Gas Operator | Feb 2026 |
| 10008 | Sand Creek Oil Co., Inc. | Lubbock, TX 79413 | Oil & Gas Operator | Jul 2012 |
| 10009 | Sand Dollar, LLC | Henderson, KY 42420 | Oil & Gas Operator | Dec 2018 |
| 10010 | Sand Hawk, LLC | Devers, TX 77538 | Oil & Gas Operator | Feb 2026 |
| 10011 | Sand River O & E LLC | Amarillo, TX 79107 | Gas Operator | Dec 2004 |
| 10012 | Sand Springs Oil & Gas Co. | Tulsa, OK 74136 | Oil & Gas Operator | Feb 2026 |
| 10013 | Sandalwood Exploration, L.P. | Houston, TX 77056 | Oil & Gas Operator | Feb 2026 |
| 10014 | Sandalwood Oil & Gas, Inc. | Houston, TX 77057 | Oil & Gas Operator | Feb 2026 |
| 10015 | Sandco Oil & Gas, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Apr 2015 |
| 10016 | Sandel Energy, Inc. | Huntsville, TX 77342 | Oil & Gas Operator | Apr 2004 |
| 10017 | Sandel Operating Company | Huntsville, TX 77340 | Oil & Gas Operator | Feb 2026 |
| 10018 | Sanders & Smith, L.C. | Amarillo, TX 79110 | Oil & Gas Operator | Mar 2004 |
| 10019 | Sanders Energy LLC | Aledo, TX 76008 | Oil & Gas Operator | Feb 2026 |
| 10020 | Sanders Oil & Gas, LTD. | Granbury, TX 76048 | Oil & Gas Operator | Aug 2015 |
| 10021 | Sanders, Larry E. Trustee | Longview, TX 75606 | Oil & Gas Operator | Feb 2026 |
| 10022 | Sandhawk Energy, LLC | Houston, TX 77079 | Oil & Gas Operator | Jun 2011 |
| 10023 | Sandhill Production Inc | Shongaloo, LA 71072 | Oil & Gas Operator | Dec 2019 |
| 10024 | Sandhills Oil Co. | Copan, OK 74022 | Oil Operator | Aug 1997 |
| 10025 | Sandia Energy Corporation-NM | Holdenville, OK 74848 | Oil & Gas Operator | Aug 2003 |
| 10026 | Sandia Operating Corp. | San Antonio, TX 78270 | Oil & Gas Operator | May 2010 |
| 10027 | Sandia Production Co., Inc. | Corrales, NM 87048 | Oil & Gas Operator | Feb 2026 |
| 10028 | Sandlot Oil & Gas LLC | Gruver, TX 79040 | Oil & Gas Operator | Feb 2026 |
| 10029 | Sandman Exploration, L.L.C. | Georgetown, TX 78627 | Oil & Gas Operator | Feb 2026 |
| 10030 | Sandollar Oil & Gas, Inc. | Hallsville, TX 75650 | Oil & Gas Operator | Feb 1993 |
| 10031 | Sandor Petroleum Corporation | Crane, TX 79731 | Oil & Gas Operator | Feb 2026 |
| 10032 | Sandpoint Operating, LLC | San Antonio, TX 78209 | Oil & Gas Operator | Nov 2025 |
| 10033 | Sandpoint Texas LLC | Houston, TX 77270 | Oil Operator | Feb 2026 |
| 10034 | Sandridge Energy, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2018 |
| 10035 | Sandridge Exploration And Production LLC | Oklahoma City, OK 73104 | Oil & Gas Operator | Feb 2026 |
| 10036 | Sandridge Offshore, LLC | Houston, TX 77042 | Oil & Gas Operator | Apr 2014 |
| 10037 | Sandridge Onshore, LLC | Houston, TX 77010 | Oil & Gas Operator | Jun 2014 |
| 10038 | Sandridge Tertiary, LLC | Midland, TX 79701 | Oil & Gas Operator | Jul 2012 |
| 10039 | Sandstone Operating Company, Inc | Odessa, TX 79762 | Oil & Gas Operator | Jul 1995 |
| 10040 | Sandstone Resources, Inc. | Houston, TX 77043 | Oil & Gas Operator | Feb 2026 |
| 10041 | Sandstone Services, LLC | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 10042 | Sanguine Gas Exploration, LLC | Tulsa, OK 74119 | Oil & Gas Operator | Feb 2026 |
| 10043 | Sanguine, LTD | Tulsa, OK 74170 | Gas Operator | Oct 2003 |
| 10044 | Sanhall Corporation | Huntsville, TX 77340 | Oil & Gas Operator | Oct 1993 |
| 10045 | Santa Anna Operating 3, LLC | Santa Anna, TX 76878 | Oil & Gas Operator | Feb 2026 |
| 10046 | Santa Anna Operating Co I, LLC | Abilene, TX 79608 | Oil & Gas Operator | Oct 2018 |
| 10047 | Santa Fe Energy Oper. Part., LP | Houston, TX 77057 | Oil & Gas Operator | Dec 1994 |
| 10048 | Santa Fe Energy Resources, Inc. | Houston, TX 77024 | Oil & Gas Operator | Mar 2008 |
| 10049 | Santa Fe Exploration Company | Lubbock, TX 79408 | Oil & Gas Operator | Nov 1997 |
| 10050 | Santa Fe Natural Resources, Inc. | Midland, TX 79705 | Oil & Gas Operator | Dec 2021 |
| 10051 | Santa Fe Operating LLC | Frisco, TX 75034 | Oil & Gas Operator | Feb 2026 |
| 10052 | Santa Fe Snyder Corporation | Houston, TX 77024 | Oil & Gas Operator | Oct 2000 |
| 10053 | Santa Rosa Operating, LLC | Corpus Chrsti, TX 78411 | Oil & Gas Operator | Feb 2026 |
| 10054 | Santana Energy Services, LLC | Baton Rouge, LA 70809 | Oil & Gas Operator | Feb 2026 |
| 10055 | Santerra Oil & Gas, Inc. | Seagoville, TX 75159 | Oil & Gas Operator | Feb 2026 |
| 10056 | Santo Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2026 |
| 10057 | Santos USA Corp. | Houston, TX 77042 | Oil & Gas Operator | Dec 2008 |
| 10058 | Sapient Energy Corp | Oklahoma City, OK 73154 | Oil & Gas Operator | Jan 2002 |
| 10059 | Saratoga Energy Corporation | Sourlake, TX 77659 | Oil & Gas Operator | Dec 2004 |
| 10060 | Saratoga Oil Company | Batson, TX 77519 | Oil & Gas Operator | Feb 2026 |
| 10061 | Saratoga Production Company LLC | Sourlake, TX 77659 | Oil Operator | Feb 2026 |
| 10062 | Saratoga Resources, Inc. | Houston, TX 77077 | Oil & Gas Operator | Jul 1994 |
| 10063 | Sargeco, Inc. | Pampa, TX 79065 | Oil & Gas Operator | Sep 2018 |
| 10064 | Sargent, Jo Ann | Holliday, TX 76366 | Oil & Gas Operator | Aug 2003 |
| 10065 | Sarita Energy Resources, LTD. | Houston, TX 77277 | Oil & Gas Operator | Feb 2026 |
| 10066 | Sarita Oil & Gas | Boerne, TX 78006 | Oil & Gas Operator | Jul 2024 |
| 10067 | Sarrita Oil Co., Inc. | Floresville, TX 78114 | Oil & Gas Operator | Jul 2002 |
| 10068 | Sassco Petroleum, Inc. | Austin, TX 78763 | Oil & Gas Operator | Feb 2000 |
| 10069 | Satanta Oil Company | Midland, TX 79704 | Oil & Gas Operator | Feb 2026 |
| 10070 | Satex Energy, Inc. | San Antonio, TX 78216 | Oil & Gas Operator | Aug 2003 |
| 10071 | Saturn Oil And Development Corp. | Carlsbad, NM 88220 | Oil & Gas Operator | Feb 2026 |
| 10072 | Sauder Management Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Feb 2026 |
| 10073 | Saur, Jerry | Luling, TX 78648 | Oil & Gas Operator | Dec 2015 |
| 10074 | Savage Exploration, Inc. | San Marcos, TX 78666 | Oil & Gas Operator | Feb 2026 |
| 10075 | Savannah Oil Co. | Jefferson, TX 75657 | Oil & Gas Operator | Nov 2007 |
| 10076 | Savannah Ross And Company, LLC | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 10077 | Saved By Grace Plugging, LLC | Tuscola, TX 79562 | Oil & Gas Operator | Dec 2018 |
| 10078 | Savior Oil Company | Allen, TX 75013 | Oil Operator | Nov 2015 |
| 10079 | Sawtooth Operating Co., Inc. | Houston, TX 77024 | Oil & Gas Operator | Feb 2026 |
| 10080 | Sawtooth, Inc. | Houston, TX 77024 | Oil & Gas Operator | Dec 2013 |
| 10081 | Saxet Energy, LTD. | Houston, TX 77057 | Oil & Gas Operator | Mar 2004 |
| 10082 | Saxet Exploration Ent. Co., Inc. | Fulshear, TX 77441 | Oil Operator | Feb 2026 |
| 10083 | Saxet Oil Corporation | Midland, TX 79708 | Oil & Gas Operator | Feb 2026 |
| 10084 | Saxet Operating Co.,Inc. | Madisonville, TX 77864 | Oil & Gas Operator | Feb 2026 |
| 10085 | Saxet Petroleum, Inc. | Houston, TX 77057 | Oil & Gas Operator | Feb 2026 |
| 10086 | Saxon Oil Company | Dallas, TX 75204 | Oil & Gas Operator | Oct 2009 |
| 10087 | Saxum Oil & Gas, LLC | Beeville, TX 78104 | Oil & Gas Operator | Feb 2026 |
| 10088 | Saxum Opco, LLC | Dallas, TX 75225 | Oil & Gas Operator | Feb 2026 |
| 10089 | Sayers Operating Company | Midland, TX 79705 | Oil & Gas Operator | Feb 2005 |
| 10090 | SBG Resources Group LLC | Frisco, TX 75035 | Oil Operator | Feb 2026 |
| 10091 | SBJ Energy Partners, L.L.C. | Waco, TX 76710 | Oil & Gas Operator | Feb 2026 |
| 10092 | SBJ Oil & Gas | MC Camey, TX 79752 | Oil & Gas Operator | Feb 2009 |
| 10093 | SBJ Oil & Gas, LLC | Iraan, TX 79744 | Oil & Gas Operator | Feb 2026 |
| 10094 | Sbog, LLC | Granbury, TX 76048 | Oil & Gas Operator | Feb 2021 |
| 10095 | SBS Oil Company | Austin, TX 78749 | Oil & Gas Operator | Feb 2026 |
| 10096 | Scala Energy Operating, LLC | Midland, TX 79701 | Oil & Gas Operator | Oct 2023 |
| 10097 | Scan Gas, Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 2004 |
| 10098 | Scana Exploration Company | Houston, TX 77002 | Oil & Gas Operator | Dec 1999 |
| 10099 | Scana Petroleum Resources Inc | Houston, TX 77002 | Oil & Gas Operator | Jun 2013 |
| 10100 | Scana Production Company | Houston, TX 77002 | Oil & Gas Operator | Mar 2005 |