| 31001 | Warrego Oil & Gas LLC | Lander, WY 82520 | Oil Operator | May 2018 |
| 31002 | Warren American Oil Co | Tulsa, OK 74147 | Oil & Gas Operator | Sep 2024 |
| 31003 | Warren American Oil Company LLC | Tulsa, OK 74147 | Oil & Gas Operator | Nov 2024 |
| 31004 | Warren Drilling Co | Dexter City, OH 45727 | Oil & Gas Operator | Dec 2023 |
| 31005 | Warren E & P Inc | Dallas, TX 75240 | Oil & Gas Operator | Sep 2024 |
| 31006 | Warren Enterprises Inc | Gillette, WY 82718 | Oil Operator | Dec 2022 |
| 31007 | Warren Producers, Inc. | Bowling Green, KY 42102 | Oil & Gas Operator | Dec 2017 |
| 31008 | Warren Production Services | Caldwell, TX 77836 | Oil & Gas Operator | Nov 2024 |
| 31009 | Warren, Earl T. | San Angelo, TX 76906 | Oil & Gas Operator | Nov 2024 |
| 31010 | Warren, James E. | Arkansas City, KS 67005 | Oil Operator | Nov 2009 |
| 31011 | Warren, Joe H. | Dallas, TX 75206 | Oil & Gas Operator | Oct 2001 |
| 31012 | Warren, Malcolm | Corfu, NY 14036 | Gas Operator | Dec 2023 |
| 31013 | Warrior Exploration & Production LLC | Barnsdall, OK 74002 | Oil & Gas Operator | Aug 2024 |
| 31014 | Warrior Exploration LLC | Sapulpa, OK 74067-1912 | Oil & Gas Operator | Sep 2024 |
| 31015 | Warrior Inc | Hobbs, NM 88241 | Oil & Gas Operator | Feb 1998 |
| 31016 | Warrior Met Coal Gas, LLC | Brookwood, AL 35444 | Gas Operator | Jun 2024 |
| 31017 | Warrior Petroleum Corporation | Henderson, TX 75652 | Oil & Gas Operator | Apr 2024 |
| 31018 | Warrior Resources Inc. | Mexia, TX 76667 | Oil & Gas Operator | Nov 2024 |
| 31019 | Warsaw Development | Bowling Green, KY 42101 | Oil Operator | Dec 2022 |
| 31020 | Warwick Associates LC | Oklahoma City, OK 73112 | Oil & Gas Operator | Sep 2024 |
| 31021 | Warwick Oil & Gas, Inc. | Houston, TX 77098 | Oil & Gas Operator | Feb 1993 |
| 31022 | Warwick Oil Corp. | | Oil & Gas Operator | Mar 1990 |
| 31023 | Warwick-Artemis, LLC | Nichols Hill, OK 73116 | Oil & Gas Operator | Nov 2024 |
| 31024 | Warwick-Bacchus LLC | Oklahoma City, OK 73116 | Oil & Gas Operator | Jul 2024 |
| 31025 | Warwick-Jupiter LLC | Oklahoma City, OK 73116 | Oil & Gas Operator | Sep 2024 |
| 31026 | Warwick-Minerva LLC | Oklahoma City, OK 73116 | Oil & Gas Operator | Jul 2024 |
| 31027 | Wasatch Oil & Gas Corp | Farmington, UT 84025-0699 | Oil & Gas Operator | Mar 2002 |
| 31028 | Wash, Robert C. | Forsan, TX 79733 | Oil & Gas Operator | Nov 2000 |
| 31029 | Wash, Robert C. Inc. | Forsan, TX 79733 | Oil & Gas Operator | Nov 2024 |
| 31030 | Washakie Energies Company | Worland, WY 82401 | Oil & Gas Operator | Dec 2019 |
| 31031 | Washakie Oil Company | | Oil & Gas Operator | Dec 1989 |
| 31032 | Washburn Lee | Newcastle, WY 82701 | Oil Operator | Sep 2024 |
| 31033 | Washington Energy Co LLC | Canonsburg, PA 15317-0400 | Oil & Gas Operator | Dec 2023 |
| 31034 | Washington Energy Exploration | | Oil & Gas Operator | Dec 1997 |
| 31035 | Washita Energy Inc | Pauls Valley, OK 73075-0923 | Oil & Gas Operator | Mar 2015 |
| 31036 | Washita Oil And Gas, L.L.C. | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2015 |
| 31037 | Washita Production Company | Tulsa, OK 74136 | Oil & Gas Operator | May 2006 |
| 31038 | Wassom, Claude J | | Oil & Gas Operator | May 2013 |
| 31039 | Wasson Billy C | Morris, OK 74445-2721 | Oil & Gas Operator | Aug 2024 |
| 31040 | Waste TRMT Corp | Washington, PA 15301-0558 | Oil & Gas Operator | Dec 2023 |
| 31041 | Wat Khmer Temple* | | Oil Operator | Dec 2003 |
| 31042 | Watchtower Petroleum, LLC | | Oil & Gas Operator | Aug 2024 |
| 31043 | Watco Energy | Jacksboro, TX 76458 | Oil & Gas Operator | Nov 2024 |
| 31044 | Watco Energy, Inc. | Tyler, TX 75713 | Oil & Gas Operator | Apr 1996 |
| 31045 | Water Works Engineering, Inc. | Rockdale, TX 76567 | Oil & Gas Operator | Jan 1998 |
| 31046 | Waterbridge Arkoma Operating LLC | Houston, TX 77056 | Oil Operator | Sep 2024 |
| 31047 | Waterbridge Texas Operating LLC | Houston, TX 77056 | Oil & Gas Operator | Nov 2024 |
| 31048 | Waterco Inc | Wooster, OH 44691 | Oil & Gas Operator | Dec 2000 |
| 31049 | Waterford Energy Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Nov 1998 |
| 31050 | Waterford Production Co | | Oil Operator | Oct 1992 |
| 31051 | Waterloo Exploration LLC | Tulsa, OK 74136-4226 | Gas Operator | Aug 2024 |
| 31052 | Waters Eng. & Operating, Inc. | Corpus Chrsti, TX 78471 | Oil & Gas Operator | Sep 2013 |
| 31053 | Waters Petroleum | Albany, TX 76430 | Oil & Gas Operator | Aug 2016 |
| 31054 | Watertech Disposal | Enid, OK 73702-0125 | Oil Operator | Sep 2007 |
| 31055 | Watertech Disposal LLC | Enid, OK 73702 | Oil Operator | Dec 2011 |
| 31056 | Watkins J L | Henryetta, OK 74437 | Oil & Gas Operator | Sep 2024 |
| 31057 | Watkins Joe L | Boynton, OK 74422 | Oil & Gas Operator | Mar 2015 |
| 31058 | Watkins Oil Company | Claremore, OK 74017 | Oil & Gas Operator | May 2018 |
| 31059 | Watkins Paul | Bixby, OK 74008-4018 | Oil & Gas Operator | Jun 2004 |
| 31060 | Watkins Production Company | Dallas, TX 75229 | Oil & Gas Operator | Feb 2008 |
| 31061 | Watkins, J. B. | Borger, TX 79007 | Oil & Gas Operator | May 2009 |
| 31062 | Watson Energy Investments, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Nov 2024 |
| 31063 | Watson Energy, L.L.C. | | Oil & Gas Operator | Jun 2005 |
| 31064 | Watson Fred S Revocable Trust | Muskogee, OK 74402-1928 | Oil Operator | Nov 2017 |
| 31065 | Watson Oil & Gas Co. | Gorman, TX 76454 | Oil & Gas Operator | Jan 2002 |
| 31066 | Watson Oil & Gas Corp. | | Oil Operator | Aug 1994 |
| 31067 | Watson Oil & Gas, Inc. | Gorman, TX 76454 | Oil & Gas Operator | Nov 2024 |
| 31068 | Watson Oil Corporation | | Oil & Gas Operator | Jun 1981 |
| 31069 | Watson Operating Company | Pampa, TX 79066 | Oil & Gas Operator | Dec 2003 |
| 31070 | Watson Packer Employee Fund | Monahans, TX 79756 | Oil & Gas Operator | Nov 2024 |
| 31071 | Watson Petroleum | | Oil & Gas Operator | Feb 1990 |
| 31072 | Watson Petroleum Inc | Wichita, KS 67208 | Oil & Gas Operator | May 2010 |
| 31073 | Watson Wayne W | Cambridge, OH 43725-3024-3024 | Oil & Gas Operator | Dec 2002 |
| 31074 | Watson, B. G. Oil Field Salv Inc | Coleman, TX 76834 | Oil & Gas Operator | Mar 2000 |
| 31075 | Watson, Ben | Blue Mound, KS 66010 | Oil Operator | Oct 2008 |
| 31076 | Watt Energy, LLC | Port Barre, LA 70577 | Oil & Gas Operator | Nov 2024 |
| 31077 | Watt Mineral Holdings LLC | | Oil Operator | Sep 2024 |
| 31078 | Watt, Larry | Copan, OK 74022 | Oil Operator | Oct 2019 |
| 31079 | Watt, Larry D | | Oil Operator | Aug 2024 |
| 31080 | Wattles, Richard F. | Colden, NY 14033 | Gas Operator | Dec 2023 |
| 31081 | Watts And Hill Oil Company | | Oil Operator | Sep 1995 |
| 31082 | Watts Keith | Bristow, OK 74010-4996 | Oil Operator | May 2024 |
| 31083 | Watts Oil And Gas | Hardtner, KS 67057 | Oil Operator | Apr 2006 |
| 31084 | Watts Tank Truck Service, Inc. | Hamilton, KS 66853 | Oil Operator | Jul 2024 |
| 31085 | Watts, Harold | Oakland, KY 42159 | Oil Operator | Dec 2022 |
| 31086 | Watts, J R | | Oil Operator | Dec 2009 |
| 31087 | Watusi Energy LLC | Midland, TX 79710 | Oil & Gas Operator | Nov 2024 |
| 31088 | Wausau Development Corporation | Laurel, MS 39440 | Oil & Gas Operator | Sep 2019 |
| 31089 | Wave Energy LLC | Jennings, OK 74038 | Oil Operator | Sep 2024 |
| 31090 | Wave Petroleum Operating LLC | Denver, CO 80202 | Oil & Gas Operator | Sep 2024 |
| 31091 | Wavefront Energy & Envir Serv USA Inc | Edmonton, AB T6B3P6 | Oil Operator | Apr 2015 |
| 31092 | Wavepoint Realty Ny, LLC | North East, PA 16428 | Gas Operator | Dec 2023 |
| 31093 | Way Drilling Com | | Oil & Gas Operator | Mar 1993 |
| 31094 | Way, Ralph L., Inc. | Midland, TX 79701 | Oil & Gas Operator | Nov 2024 |
| 31095 | Wayland Drilling & Explr., Inc. | Grapevine, TX 76099 | Oil & Gas Operator | Apr 2006 |
| 31096 | Wayman W. Buchanan | | Oil & Gas Operator | Feb 1986 |
| 31097 | Waymar Oil & Gas Company | Texarkana, TX 75503 | Oil & Gas Operator | Jan 2007 |
| 31098 | Wayne Ballinger | | Oil & Gas Operator | Dec 2000 |
| 31099 | Wayne E. Glenn Associates, Inc. | Dickinson, TX 77539 | Oil & Gas Operator | Jan 2016 |
| 31100 | Wayne Gas Company | | Gas Operator | Dec 2015 |