| 4001 | Bryant Expl And Prod Co Inc | Elk City, OK 73648-0827 | Oil & Gas Operator | Apr 2014 |
| 4002 | Bryant Investors, A General Partnership | Lyons, KS 67554 | Oil Operator | Oct 2009 |
| 4003 | Bryant Joe | Helena, OK 73741 | Oil & Gas Operator | Apr 1998 |
| 4004 | Bryant Oil | Levelland, TX 79336 | Oil & Gas Operator | May 2026 |
| 4005 | Bryant Oil & Gas Corporation | | Oil & Gas Operator | Mar 1987 |
| 4006 | Brymer Contracting Incorporated | Pleasanton, TX 78064 | Oil & Gas Operator | May 2026 |
| 4007 | Brymer, Jack Contr. Serv. | George West, TX 78022 | Oil Operator | May 2026 |
| 4008 | BS&W Solutions LLC | | Oil Operator | Jun 2014 |
| 4009 | Bsand Operating Co., LLC | Graham, TX 76450 | Oil Operator | May 2026 |
| 4010 | BSB Oil And Gas, LLC | | Oil & Gas Operator | Dec 2021 |
| 4011 | Bse Production Co. | Victoria, TX 77903 | Oil & Gas Operator | May 2026 |
| 4012 | Bsfi Western E & P, Inc. | | Oil & Gas Operator | Jun 2005 |
| 4013 | Bsi Operating, LLC | | Oil & Gas Operator | Dec 2019 |
| 4014 | Bso Inc | Cleveland, OK 74020 | Oil & Gas Operator | Feb 2026 |
| 4015 | Bta Oil Producers | Midland, TX 79701 | Oil & Gas Operator | Sep 2009 |
| 4016 | Bta Oil Producers, LLC | Midland, TX 79701 | Oil & Gas Operator | May 2026 |
| 4017 | Bta Operating | Edmond, OK 73083 | Oil & Gas Operator | May 2020 |
| 4018 | Bto Venture, Inc. | Wichita Falls, TX 76309 | Oil & Gas Operator | Nov 2012 |
| 4019 | Bubba Lynn Crude | San Marcos, TX 78666 | Oil Operator | May 2026 |
| 4020 | Bubenik, Ronnie, Inc. | Mineral Wells, TX 76067 | Oil & Gas Operator | May 2026 |
| 4021 | Bucaro Energy LLC | Houston, TX 77077 | Oil Operator | May 2026 |
| 4022 | Buccaneer Alaskan Operations, LLC | | Oil & Gas Operator | Dec 2014 |
| 4023 | Buccaneer Operating LLC | Kilgore, TX 75663 | Oil & Gas Operator | May 2026 |
| 4024 | Buccaneer Petrol | | Oil Operator | Jan 1988 |
| 4025 | Buccaneer Petroleum Inc | Tonkawa, OK 74653-2513 | Oil & Gas Operator | Jan 2013 |
| 4026 | Buchanan Wayman W | San Antonio, TX 78212 | Oil & Gas Operator | Sep 1990 |
| 4027 | Buchanan, Billy R. | Coahoma, TX 79511 | Oil & Gas Operator | May 2026 |
| 4028 | Bucher Exploration L.L.C. | Buckhannon, WV 26201-0000 | Gas Operator | Dec 2021 |
| 4029 | Buck Creek Associates | Bartlesville, OK 74006 | Oil & Gas Operator | May 2013 |
| 4030 | Buck Creek Associates LLC | Bartlesville, OK 74005-2091 | Oil Operator | Sep 2009 |
| 4031 | Buck Creek Freight Inc | Lusk, WY 82225 | Oil Operator | Mar 2026 |
| 4032 | Buck Exploration | Oklahoma City, OK 73112 | Oil & Gas Operator | Dec 1991 |
| 4033 | Buck Management Co. L.L.C. | Fredericksbrg, TX 78624 | Oil & Gas Operator | May 2026 |
| 4034 | Buck Paul J | | Oil & Gas Operator | Feb 1995 |
| 4035 | Buck Production Co LLC | Bristow, OK 74010 | Oil & Gas Operator | Sep 2023 |
| 4036 | Buck Production Co. | Jacksboro, TX 76458 | Oil & Gas Operator | May 2026 |
| 4037 | Buck Wheat Resources, L.P. | Eastland, TX 76448 | Oil & Gas Operator | May 2026 |
| 4038 | Buck, George | Laredo, TX 78041 | Oil & Gas Operator | Aug 2003 |
| 4039 | Buck, Paul Jordan | Sedan, KS 67361 | Oil & Gas Operator | Dec 2025 |
| 4040 | Buckeye Corporat | | Oil Operator | Dec 1996 |
| 4041 | Buckeye Crude Expl Inc | Columbus, OH 43216-2671 | Oil & Gas Operator | Dec 1987 |
| 4042 | Buckeye Energy Inc | Midland, TX 79702 | Oil & Gas Operator | Dec 2018 |
| 4043 | Buckeye Energy Resources | Zanesville, OH 43702-1190 | Oil & Gas Operator | Dec 1995 |
| 4044 | Buckeye Franklin Co | Zoarville, OH 44656 | Oil & Gas Operator | Dec 1996 |
| 4045 | Buckeye Oil Producing Co. | Wooster, OH 44691-129 | Oil & Gas Operator | Dec 2025 |
| 4046 | Buckeye Petroleum Company, Inc | | Oil & Gas Operator | Apr 1983 |
| 4047 | Buckeye West LLC | Wooster, OH 44691 | Oil Operator | Dec 2025 |
| 4048 | Buckhorn Oilfield Service Inc | Kilgore, TX 75663 | Oil Operator | May 2026 |
| 4049 | Buckhorn Operating LLC | MT Enterprise, TX 75681 | Oil & Gas Operator | May 2026 |
| 4050 | Buckhorn Petroleum | | Oil & Gas Operator | Dec 1983 |
| 4051 | Buckley, Michael T. | Sweetgrass, MT 59484 | Oil & Gas Operator | Dec 2025 |
| 4052 | Bucky LTD | | Oil Operator | Dec 2020 |
| 4053 | Bud Oil, Inc. | Duncan, OK 73534 | Oil & Gas Operator | May 2026 |
| 4054 | Bud'S Drilling Company, Inc. | Brookshire, TX 77423 | Oil & Gas Operator | May 2026 |
| 4055 | Bud'S Pumping Service Inc. | | Oil Operator | Dec 1997 |
| 4056 | Buddie Sallee | Humboldt, KS 66748 | Oil Operator | Dec 2002 |
| 4057 | Buds Oil Company | Sperry, OK 74073 | Oil & Gas Operator | Mar 2026 |
| 4058 | Buffalo Oil & Gas LLC | Oxford, KS 67119 | Oil & Gas Operator | Dec 2025 |
| 4059 | Buffalo Oil Corp. | Cotulla, TX 78014 | Oil & Gas Operator | May 2026 |
| 4060 | Buffalo Operating Corporation | Westminister, CO 80234 | Oil & Gas Operator | Dec 2001 |
| 4061 | Buffalo Properties LLC | | Oil & Gas Operator | Dec 2003 |
| 4062 | Buffalo Raider Consulting, LLC | Amarillo, TX 79119 | Oil & Gas Operator | May 2026 |
| 4063 | Buffalo Resources Co. | Rosenberg, TX 77471 | Oil & Gas Operator | Sep 2000 |
| 4064 | Buffalo Resources LLC | Woodward, OK 73801 | Oil & Gas Operator | Aug 2025 |
| 4065 | Buffalo Tournament Club, Inc. | Lancaster, NY 14086 | Gas Operator | Dec 2024 |
| 4066 | Buffalo Xxii Operating, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | May 2026 |
| 4067 | Buffco Production, Inc. | Longview, TX 75606 | Oil & Gas Operator | May 2026 |
| 4068 | Bugington Energy, LLC | Odessa, TX 79768 | Oil & Gas Operator | Apr 2018 |
| 4069 | Bulinski Richard | Wetumka, OK 74883-0056 | Oil & Gas Operator | Jan 2004 |
| 4070 | Bull Dog Oil | Bolivar, NY 14715 | Oil & Gas Operator | Dec 2024 |
| 4071 | Bull Oil Company, LLC | Livingston, TX 77351 | Oil & Gas Operator | May 2026 |
| 4072 | Bull Operating, LLC | Houston, TX 77010 | Oil & Gas Operator | May 2026 |
| 4073 | Bull Ring Energy LLC | Oklahoma City, OK 73118 | Gas Operator | Jan 2026 |
| 4074 | Bull Run Energy LLC | Warren, PA 16365-2215 | Oil & Gas Operator | Dec 2017 |
| 4075 | Bull Run Resources LLC | Warren, PA 16365 | Oil & Gas Operator | Dec 2025 |
| 4076 | Bullard Bros Production Co Inc | Comanche, OK 73529-0637 | Oil Operator | Mar 2015 |
| 4077 | Bullard Don W | Ardmore, OK 73401-3646 | Oil & Gas Operator | Dec 2019 |
| 4078 | Bullard Oil Company LLC | Tuttle, OK 73089-8375 | Oil Operator | Jul 2025 |
| 4079 | Bullards Oilfield Service Inc | Ardmore, OK 73401-3646 | Oil Operator | Sep 1999 |
| 4080 | Bulldog Disposal Inc | Laverne, OK 73848 | Oil Operator | Apr 2014 |
| 4081 | Bulldog Exploration, LP | Houston, TX 77090 | Oil & Gas Operator | Apr 2011 |
| 4082 | Bulldog Operating Company | Artesia, NM 88211 | Oil & Gas Operator | May 2026 |
| 4083 | Bulldog Operating Company LLC | Shreveport, LA 71101-3680 | Oil & Gas Operator | Jun 2015 |
| 4084 | Bulldog Production Inc | Seminole, OK 74868 | Oil Operator | Nov 2024 |
| 4085 | Bullet Development, LLC | Abilene, TX 79601 | Oil & Gas Operator | May 2026 |
| 4086 | Bullin, R. E. Operating Inc. | Levelland, TX 79336 | Oil & Gas Operator | May 2026 |
| 4087 | Bullin, R.E. | Levelland, TX 79336 | Oil & Gas Operator | May 1994 |
| 4088 | Bullitt Energy LLC | Marietta, OH 45750-5317 | Oil & Gas Operator | Dec 2024 |
| 4089 | Bullitt Oil | Kilgore, TX 75663 | Oil & Gas Operator | Jul 2016 |
| 4090 | Bullock A O | Casper, WY 82604 | Oil & Gas Operator | Jan 2026 |
| 4091 | Bullock Gladys C Trust | | Oil & Gas Operator | Dec 1999 |
| 4092 | Bullseye Oilfield Service | Cunningham, KS 67035 | Oil Operator | Apr 2023 |
| 4093 | Bullseye Operating LLC | Bartlesville, OK 74005 | Oil & Gas Operator | Feb 2026 |
| 4094 | Bullseye Petrole | | Oil Operator | Oct 1992 |
| 4095 | Bullseye Petroleum, Inc. | Wichita, KS 67230 | Oil Operator | Oct 2025 |
| 4096 | Bulwark Oil & Gas, LLC | Graham, TX 76450 | Oil & Gas Operator | May 2026 |
| 4097 | Bummer Bruce L | Casper, WY 82602 | Oil & Gas Operator | Dec 2007 |
| 4098 | Bump, Derek M. And Karrie L. | Batavia, NY 14020 | Gas Operator | Dec 2024 |
| 4099 | Bunker Oil Corp. | | Oil & Gas Operator | Dec 1994 |
| 4100 | Bunkirt J J Oil & Gas Corporation | Powell, WY 82435 | Oil & Gas Operator | Feb 2026 |