| 1001 | Stratlynn, Inc. | Conroe, TX 77305 | Oil & Gas Operator | Mar 2008 |
| 1002 | Strawn DRLG. Co. | Wichita Falls, TX 76307 | Oil & Gas Operator | Aug 2005 |
| 1003 | Strawn Energy Services, LLC | Lubbock, TX 79404 | Oil Operator | Mar 2025 |
| 1004 | Strawn Operating Co., L.L.C. | El Paso, TX 79912 | Oil Operator | Mar 2025 |
| 1005 | Strawn Partners Operating, LLC | Graham, TX 76450 | Oil & Gas Operator | Mar 2025 |
| 1006 | Strawn Petroleum Operating, LLC | Houston, TX 77056 | Oil & Gas Operator | Mar 2025 |
| 1007 | Stray Oil Company | Burkburnett, TX 76354 | Oil & Gas Operator | Aug 2008 |
| 1008 | Stray Oil Company, LLC | Burkburnett, TX 76354 | Oil Operator | Nov 2017 |
| 1009 | Stream Energy, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Dec 2024 |
| 1010 | Strebor Oil Co. | Dallas, TX 75225 | Oil & Gas Operator | Jun 1993 |
| 1011 | Street, Spencer B., Jr. | Graham, TX 76450 | Oil & Gas Operator | Mar 1998 |
| 1012 | Strickland, H.W. | Henrietta, TX 76365 | Oil & Gas Operator | Dec 1999 |
| 1013 | Strike Too Oil | Albany, TX 76430 | Oil Operator | Mar 2025 |
| 1014 | Stringer Oil & Gas Co., Inc. | San Angelo, TX 76902 | Oil & Gas Operator | Oct 1996 |
| 1015 | Striper Oil, Inc. | Dallas, TX 75379 | Oil & Gas Operator | Apr 2002 |
| 1016 | Stronghold Energy II Oper, LLC | Midland, TX 79702 | Oil & Gas Operator | Aug 2022 |
| 1017 | Stroube Energy Corporation | Dallas, TX 75248 | Oil & Gas Operator | Jan 2012 |
| 1018 | Stroube Family Partnership #2 | Corsicana, TX 75151 | Oil Operator | Mar 2025 |
| 1019 | Stroud Energy, LTD. | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2006 |
| 1020 | Stroud Oil Properties, Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | May 2013 |
| 1021 | Stroud Petroleum, Inc. | Shreveport, LA 71162 | Oil & Gas Operator | Mar 2025 |
| 1022 | Stroud Production LLC | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2024 |
| 1023 | Struthoff Energy, L.L.C. | San Antonio, TX 78216 | Oil Operator | Mar 2025 |
| 1024 | Stryker Energy Corp. | Mesquite, TX 75180 | Oil & Gas Operator | Mar 2025 |
| 1025 | STS Petroleum LLC | Houston, TX 77289 | Oil & Gas Operator | Mar 2025 |
| 1026 | Stuart & Barrett | San Angelo, TX 76904 | Gas Operator | Jan 2008 |
| 1027 | Stuart Oil & Gas | Longview, TX 75606 | Oil & Gas Operator | Mar 2025 |
| 1028 | Stuart Operating, LLC | Ozona, TX 76943 | Oil & Gas Operator | Mar 2025 |
| 1029 | Stubblefield Energy Company | Abilene, TX 79604 | Oil & Gas Operator | Mar 2025 |
| 1030 | Stubbs Operating Co. | Archer City, TX 76351 | Oil & Gas Operator | Aug 1998 |
| 1031 | Stubbs, J. W. | Suwanee, GA 30024 | Oil & Gas Operator | Mar 2008 |
| 1032 | Studley Resources Corporation | Humble, TX 77347 | Oil & Gas Operator | Dec 1996 |
| 1033 | Stults, Joe K. | Archer City, TX 76351 | Oil & Gas Operator | Mar 2007 |
| 1034 | Stuteville Oil Co. | Olney, TX 76374 | Oil & Gas Operator | Aug 2004 |
| 1035 | Stuteville, Jack | Olney, TX 76374 | Oil Operator | Mar 2025 |
| 1036 | STZ Petroleum Inc. | Houston, TX 77268 | Oil & Gas Operator | Dec 1997 |
| 1037 | Sub Surface Operations | Brownwood, TX 76804 | Oil & Gas Operator | Mar 2025 |
| 1038 | Suborp Energy, Inc. | Dallas, TX 75204 | Oil & Gas Operator | Sep 2000 |
| 1039 | Subsea Operating Co. | Albany, TX 76430 | Oil & Gas Operator | Mar 2025 |
| 1040 | Subsurface Energy Corp. | Coleman, TX 76834 | Oil & Gas Operator | Mar 2025 |
| 1041 | Subsurface Exploration | Coleman, TX 76834 | Oil & Gas Operator | Apr 2006 |
| 1042 | Subsurface Production, Inc. | Coleman, TX 76834 | Oil & Gas Operator | Mar 2025 |
| 1043 | Subterranean Energy, LLC | Tyler, TX 75705 | Oil & Gas Operator | Mar 2025 |
| 1044 | Success Oil Company, Inc. | Beverly Hills, CA 90211 | Oil & Gas Operator | Mar 2025 |
| 1045 | Sue-Ann Operating, L.C. | Victoria, TX 77903 | Oil & Gas Operator | Mar 2025 |
| 1046 | Sue-Ann Production Company | Victoria, TX 77903 | Oil & Gas Operator | Mar 2008 |
| 1047 | Suemaur Expl. & Prod., LLC | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Jun 2024 |
| 1048 | Suemaur Exploration, Inc. | Corpus Chrsti, TX 78470 | Oil & Gas Operator | Mar 2008 |
| 1049 | Suemaur Operating LLC | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Mar 2025 |
| 1050 | Suerte Operating LLC | Big Lake, TX 76932 | Oil & Gas Operator | Nov 2020 |
| 1051 | Sugar Enterprises, LLC | Tyler, TX 75713 | Oil & Gas Operator | Mar 2025 |
| 1052 | Suits & Jeans, LLC | Pampa, TX 79066 | Oil & Gas Operator | Mar 2025 |
| 1053 | Sukay Oil & Gas, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Aug 2003 |
| 1054 | Sullivan & Co. | Tulsa, OK 74114 | Oil & Gas Operator | May 2022 |
| 1055 | Sullivan - Wells | Amarillo, TX 79101 | Gas Operator | Mar 2025 |
| 1056 | Sullivan, Hollis R. Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2009 |
| 1057 | Sulphur River Exploration, Inc. | Dallas, TX 75244 | Oil & Gas Operator | Mar 2025 |
| 1058 | Summit Discovery Res II LLC | Houston, TX 77024 | Oil & Gas Operator | Sep 2019 |
| 1059 | Summit Energy, Inc. | Littleton, CO 80127 | Oil & Gas Operator | Aug 2013 |
| 1060 | Summit Exploration, L.L.C. | Tulsa, OK 74119 | Oil & Gas Operator | Mar 2008 |
| 1061 | Summit Overseas Expl., Inc. | Denver, CO 80226 | Oil & Gas Operator | Apr 2007 |
| 1062 | Summit Petroleum LLC | Midland, TX 79705 | Oil & Gas Operator | Mar 2025 |
| 1063 | Summit Resources MGMT., LLC. | Edmond, OK 73083 | Oil & Gas Operator | Mar 2025 |
| 1064 | Summit Resources, Inc. | Houston, TX 77077 | Oil & Gas Operator | Sep 2016 |
| 1065 | Summitt Resources | Corsicana, TX 75110 | Oil & Gas Operator | Apr 2008 |
| 1066 | Sun Exploration, Inc. | Alice, TX 78332 | Oil & Gas Operator | Mar 2025 |
| 1067 | Sun Oil Company | Arlington, TX 76006 | Oil & Gas Operator | Dec 2021 |
| 1068 | Sun Resources Texas, Inc. | Longview, TX 75606 | Oil & Gas Operator | Dec 2024 |
| 1069 | Sun River Operating, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Mar 2025 |
| 1070 | Sun-Key Oil Co., Inc. | Dublin, TX 76446 | Oil & Gas Operator | Mar 2025 |
| 1071 | Sunbelt Salvage | Eastland, TX 76448 | Oil & Gas Operator | Sep 1998 |
| 1072 | Sunburst, Inc. | Wheat Ridge, CO 80033 | Oil & Gas Operator | Jan 2025 |
| 1073 | Suncoast Investments Co., Inc. | Plano, TX 75074 | Oil & Gas Operator | Oct 2001 |
| 1074 | Suncoast Technical Services Inc | Dallas, TX 75251 | Oil & Gas Operator | Mar 2025 |
| 1075 | Sundance Consulting Corp. | Abilene, TX 79605 | Oil & Gas Operator | Mar 2025 |
| 1076 | Sundance Energy Inc | Denver, CO 80202 | Oil & Gas Operator | Jul 2014 |
| 1077 | Sundance Oil & Gas, Inc. | Pampa, TX 79065 | Oil & Gas Operator | Mar 2012 |
| 1078 | Sundance Resources, Inc. | Rio VIsta, TX 76093 | Oil & Gas Operator | Mar 2012 |
| 1079 | Sunday Corporation | Olney, TX 76374 | Oil & Gas Operator | Mar 2025 |
| 1080 | Sundial Resources, Inc. | Graham, TX 76450 | Oil & Gas Operator | Mar 2025 |
| 1081 | Sundown Energy LP | Dallas, TX 75248 | Oil & Gas Operator | Mar 2025 |
| 1082 | Sundown Energy, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Nov 2024 |
| 1083 | Sundown Oil Operating, LLC | Graham, TX 76450 | Oil Operator | Mar 2025 |
| 1084 | Sundown Permian LP | Dallas, TX 75248 | Oil & Gas Operator | Oct 2018 |
| 1085 | Sunergon Oil Operating, LLC | Gainesville, TX 76240 | Oil Operator | Mar 2025 |
| 1086 | Sunland Production Company, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2024 |
| 1087 | Sunlight Exploration, Inc. | Canyon, TX 79015 | Oil & Gas Operator | Mar 2025 |
| 1088 | Sunray Energy, Inc. | Round Rock, TX 78683 | Oil & Gas Operator | Nov 2018 |
| 1089 | Sunray Oil Co., Inc. | Pampa, TX 79065 | Oil & Gas Operator | Jan 2013 |
| 1090 | Sunray Operating Company LLC | Sugar Land, TX 77498 | Oil & Gas Operator | Mar 2025 |
| 1091 | Sunray-Taylor, Inc. | Midland, TX 79701 | Oil & Gas Operator | Nov 1993 |
| 1092 | Sunrise Enterprises | Bowie, TX 76230 | Oil & Gas Operator | Dec 2016 |
| 1093 | Sunrise Oil, LTD. | Wichita Falls, TX 76307 | Oil & Gas Operator | Aug 2004 |
| 1094 | Sunset Energy L L C | Palm Harbor, FL 34683-3044 | Oil Operator | Dec 2007 |
| 1095 | Sunset Leases LLC | Ozona, TX 76943 | Oil Operator | Mar 2025 |
| 1096 | Sunstone Energy Company | Tulsa, OK 74153 | Oil & Gas Operator | Aug 2009 |
| 1097 | Sunterra Energy Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Dec 2009 |
| 1098 | Sunwest Oklahoma, Inc | Dallas, TX 75231 | Oil & Gas Operator | May 2023 |
| 1099 | Sunwest Operating Company L.L.C. | Englewood, CO 80155 | Oil & Gas Operator | Aug 2002 |
| 1100 | Suoco Oil Corporation | Pampa, TX 79066 | Oil & Gas Operator | Mar 2025 |