| 26001 | Russell Resources, Inc. | | Oil & Gas Operator | Dec 1998 |
| 26002 | Russell, C. M. Oil Company | Lubbock, TX 79423 | Oil & Gas Operator | Jan 2008 |
| 26003 | Russell, Gerald W. | Tulsa, OK 74103 | Oil Operator | Feb 1986 |
| 26004 | Russell, John R | | Oil Operator | Sep 2024 |
| 26005 | Russell, L. J. Oil Company | Snyder, TX 79549 | Oil & Gas Operator | Apr 2025 |
| 26006 | Russell, Phillip | Colorado City, TX 79512 | Oil & Gas Operator | Apr 2025 |
| 26007 | Russell, T. Operating Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Aug 2005 |
| 26008 | Rust Oil Corp. | Fort Worth, TX 76108 | Oil & Gas Operator | Apr 2025 |
| 26009 | Rust Operating Co., Inc. | Fort Worth, TX 76108 | Oil & Gas Operator | Feb 2000 |
| 26010 | Rustler Energy LLC | Lindsay, OK 73052 | Oil & Gas Operator | Jan 2025 |
| 26011 | Ruth Oil Co, LLC | Eunice, NM 88231 | Oil Operator | Mar 2015 |
| 26012 | Ruth Oil Co. | Luling, TX 78648 | Oil & Gas Operator | Feb 2010 |
| 26013 | Ruthco Oil, LLC | Eunice, NM 88231 | Oil Operator | May 2008 |
| 26014 | Rutherford Oil Corporation | Houston, TX 77046 | Oil & Gas Operator | Jun 2019 |
| 26015 | Rutherford, Michael A. | Dallas, TX 75381 | Oil & Gas Operator | May 2000 |
| 26016 | Ruthson Energy, Inc. | Judson, TX 75660 | Oil Operator | Apr 2025 |
| 26017 | Rutledge, Kenny | Rising Star, TX 76471 | Oil & Gas Operator | Apr 2025 |
| 26018 | Rutledge, Rome | Wichita Falls, TX 76301 | Oil & Gas Operator | Apr 1997 |
| 26019 | Rutledge-Newsom | Graham, TX 76450 | Oil Operator | Apr 2025 |
| 26020 | Rutta, Jim | Columbus, TX 78934 | Oil & Gas Operator | Dec 1995 |
| 26021 | Ruwco Oil And Gas Corp. | Austin, TX 78701 | Oil & Gas Operator | Aug 2021 |
| 26022 | RV Borchert Oil Producer | | Oil & Gas Operator | Dec 2023 |
| 26023 | Rvo Petroleum Co. | | Oil & Gas Operator | Feb 1982 |
| 26024 | RVR Operating Co. | Bedford, TX 76021 | Oil & Gas Operator | Jan 2017 |
| 26025 | RW Oil & Gas LLC | Lamont, OK 74643 | Oil & Gas Operator | Feb 2025 |
| 26026 | RW Oil Co | Lovington, NM BAD ADDR | Oil Operator | Nov 1994 |
| 26027 | RW Operating Corp. | Midland, TX 79702 | Oil & Gas Operator | Jul 2016 |
| 26028 | Rwa Corporation | Houston, TX 77024 | Oil & Gas Operator | Sep 1999 |
| 26029 | Rwa, LLC | Boyd, TX 76023 | Oil & Gas Operator | Apr 2025 |
| 26030 | Rwit Company Inc | Tulsa, OK 74131-4255 | Oil & Gas Operator | Jul 2018 |
| 26031 | RWJ Operating LLC | Dallas, TX 75201 | Oil & Gas Operator | Apr 2025 |
| 26032 | RWL Enterprises | | Oil & Gas Operator | Feb 2017 |
| 26033 | RWS Operating Co. LLC | Kilgore, TX 75663 | Oil Operator | Apr 2025 |
| 26034 | Ry-Co Petroleum | Wann, OK 74083-2052 | Oil & Gas Operator | Feb 2017 |
| 26035 | Ryan Exploration, Inc. | | Oil & Gas Operator | Mar 2012 |
| 26036 | Ryan Petroleum Corp | Oklahoma City, OK 73102-9024 | Oil & Gas Operator | Aug 1994 |
| 26037 | Ryan Petroleum Operating Inc | Oklahoma City, OK 73102-9024 | Oil & Gas Operator | May 1999 |
| 26038 | Ryan, Daniel J. | Oklahoma City, OK 73139 | Oil Operator | Sep 2003 |
| 26039 | Ryan, Joseph G. | Graham, TX 76450 | Oil & Gas Operator | Apr 2025 |
| 26040 | Ryan, Kristen S. | Elma, NY 14059 | Gas Operator | Dec 2023 |
| 26041 | Ryann Operating, LLC | Waller, TX 77484 | Oil & Gas Operator | Apr 2025 |
| 26042 | Ryca Energy Partners LLC | | Oil Operator | Nov 2024 |
| 26043 | Ryca Energy, LLC | | Oil & Gas Operator | Mar 2015 |
| 26044 | Ryder Scott Management, LLC | Wichita Falls, TX 76307 | Oil & Gas Operator | Mar 2018 |
| 26045 | Ryder Scott Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2005 |
| 26046 | Ryholland Fielder, Inc | Delray Beach, FL 33446 | Oil & Gas Operator | Apr 2025 |
| 26047 | Rystin Oil & Gas | Sugar Land, TX 77487 | Oil & Gas Operator | Apr 2025 |
| 26048 | S & B Oil Company | Wyonna, OK 74084 | Oil & Gas Operator | Nov 2005 |
| 26049 | S & B Oil Oper - | | Oil Operator | Dec 1996 |
| 26050 | S & B Operating, LLC | Iowa Park, TX 76367 | Oil Operator | Apr 2025 |
| 26051 | S & C Construction, Inc. | Whitefish, MT 59937 | Oil & Gas Operator | Apr 2025 |
| 26052 | S & C Drilling, Inc | Columbia, KY 42728 | Oil Operator | Dec 2023 |
| 26053 | S & C Oil Co. Inc. | | Oil & Gas Operator | Dec 2024 |
| 26054 | S & C Resources Inc | Cleveland, OK 74020 | Oil Operator | Jan 2025 |
| 26055 | S & D Energy Associates Inc. | | Gas Operator | Dec 1986 |
| 26056 | S & D LLC | | Oil & Gas Operator | Aug 2022 |
| 26057 | S & D Partnership | Eunice, NM 88231 | Oil Operator | Feb 2025 |
| 26058 | S & G Operating LLC | McLoud, OK 74851 | Oil & Gas Operator | Jan 2025 |
| 26059 | S & H Oil Company | Vernon, TX 76384 | Oil & Gas Operator | Sep 1999 |
| 26060 | S & H Oilfield Enterprises | | Oil & Gas Operator | Sep 2023 |
| 26061 | S & H Resources | Abilene, TX 79605 | Oil & Gas Operator | Apr 2025 |
| 26062 | S & H Tank Service Of Okla | Lindsay, OK 73052 | Oil & Gas Operator | Mar 2017 |
| 26063 | S & J Oil | Hays, KS 67601 | Oil & Gas Operator | Jan 2025 |
| 26064 | S & J Oil & Gas Co | Aztec, NM 87410 | Gas Operator | Aug 2022 |
| 26065 | S & J Oil Company | Ellinwood, KS 67526 | Oil Operator | Jun 2000 |
| 26066 | S & J Operating | | Oil Operator | May 1989 |
| 26067 | S & J Operating Company | Wichita Falls, TX 76301 | Oil & Gas Operator | Mar 2015 |
| 26068 | S & JB, Inc. | Rockdale, TX 76567 | Oil & Gas Operator | Jul 2010 |
| 26069 | S & K Oil Compan | | Oil Operator | Sep 1989 |
| 26070 | S & K Oil Company | Tulsa, OK 74101 | Oil & Gas Operator | Jul 1994 |
| 26071 | S & K Oil Production, Inc. | Blue Mound, KS 66010 | Oil Operator | Dec 2024 |
| 26072 | S & L Energy, Inc.C/O John D. Lawrence, Jr. | Fishtail, MT 59028 | Oil Operator | Oct 2024 |
| 26073 | S & L Oil Field Services | Carrizo SPGS, TX 78834 | Oil & Gas Operator | Jan 1999 |
| 26074 | S & M Drilling, LLC | Wichita Falls, TX 76308 | Oil Operator | Sep 2023 |
| 26075 | S & M Oil | Hays, KS 67601 | Oil Operator | Aug 2003 |
| 26076 | S & M Oil - Craw | | Oil Operator | Dec 1995 |
| 26077 | S & M Production Inc | Pawnee, OK 74058 | Oil & Gas Operator | Aug 2023 |
| 26078 | S & M Royalty | Andrews, TX 79714 | Oil & Gas Operator | Jan 1997 |
| 26079 | S & N Energies, Inc. | Amarillo, TX 79109 | Oil & Gas Operator | Jun 2002 |
| 26080 | S & P Energy | Benbrook, TX 76126 | Oil & Gas Operator | Oct 1994 |
| 26081 | S & P Energy, Inc. | Benbrook, TX 76126 | Oil & Gas Operator | Aug 2003 |
| 26082 | S & R Gas Ventures LTD. | Sand Fork, WV 26430-0172 | Oil & Gas Operator | Dec 2020 |
| 26083 | S & R Oil Company | Electra, TX 76360 | Oil & Gas Operator | Apr 1993 |
| 26084 | S & R Operating | Merkel, TX 79536 | Oil & Gas Operator | Mar 2008 |
| 26085 | S & S & H Oil Co. | Albany, TX 76430 | Oil & Gas Operator | Jul 2004 |
| 26086 | S & S Energy | Englewood, CO 80112 | Oil & Gas Operator | Mar 2015 |
| 26087 | S & S Energy Corp | Henderson, NV 89052 | Oil & Gas Operator | Dec 2016 |
| 26088 | S & S Oil | Ponca City, OK 74601 | Oil & Gas Operator | Dec 2009 |
| 26089 | S & S Oil & Gas Corporation | Okemah, OK 74859-0659 | Oil & Gas Operator | Sep 2014 |
| 26090 | S & S Oil & Gas LLC | Skiatook, OK 74070 | Oil & Gas Operator | Jul 2016 |
| 26091 | S & S Oil Company | Electra, TX 76360 | Oil & Gas Operator | Apr 2025 |
| 26092 | S & S Oil Company LLC | | Oil Operator | Dec 2024 |
| 26093 | S & S Oil Leasing | Chase, KS 67524 | Oil Operator | Dec 2024 |
| 26094 | S & S Oil, L.L.C. | Chase, KS 67524 | Oil Operator | Dec 2024 |
| 26095 | S & S Operating | Dumas, TX 79029 | Oil Operator | Apr 2025 |
| 26096 | S & S Operating Company, Inc. | Winnie, TX 77665 | Oil & Gas Operator | Apr 2025 |
| 26097 | S & S Production Company | Addison, TX 75001 | Oil Operator | Jul 2024 |
| 26098 | S & S Star Operating LLC | Oklahoma City, OK 73101 | Oil & Gas Operator | Jun 2023 |
| 26099 | S & S Well Service, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Aug 1998 |
| 26100 | S & T Oil Compan | | Oil Operator | Feb 1984 |