| 3001 | Black Creek Production Co., Inc. | Driftwood, TX 78619 | Oil & Gas Operator | Feb 2000 |
| 3002 | Black Dahlia Oil & Gas Co. | Glendale, CA 91208 | Oil Operator | Feb 2025 |
| 3003 | Black Diamond Energy Inc | Pittsburgh, PA 15237 | Gas Operator | May 2016 |
| 3004 | Black Diamond Energy Of Delaware Inc | Buffalo, WY 82834 | Oil & Gas Operator | Jun 2025 |
| 3005 | Black Diamond Energy, LLC | | Oil & Gas Operator | Oct 2008 |
| 3006 | Black Diamond Minerals LLC | | Oil & Gas Operator | Jun 2014 |
| 3007 | Black Diamond Oi | | Oil Operator | Dec 1996 |
| 3008 | Black Diamond Oil, Inc. | Hays, KS 67601 | Oil Operator | Apr 2019 |
| 3009 | Black Diamond Operating Co., LLC | Kilgore, TX 75662 | Oil & Gas Operator | Sep 2009 |
| 3010 | Black Diamond Production Co. | | Oil & Gas Operator | Mar 2021 |
| 3011 | Black Dome Energ | | Oil & Gas Operator | Dec 1996 |
| 3012 | Black Dome Energy Corporation | Golden, CO 80401 | Oil & Gas Operator | Dec 2019 |
| 3013 | Black Dot Oil Inc | Skiatook, OK 74070 | Oil & Gas Operator | Apr 2025 |
| 3014 | Black Draw Energy LLC | Cypress, TX 77433 | Oil & Gas Operator | Jul 2025 |
| 3015 | Black Elk Energy Offshore Op LLC | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Jul 2025 |
| 3016 | Black Elk Energy Offshore Operations LLC | | Oil & Gas Operator | Jun 2016 |
| 3017 | Black Energy LLC | Okmulgee, OK 74447 | Oil Operator | Apr 2025 |
| 3018 | Black Frank J | | Oil & Gas Operator | Jan 1994 |
| 3019 | Black Gold Energy LLC | Jenks, OK 74037 | Oil Operator | Jun 2024 |
| 3020 | Black Gold Oil Co Dba C & L Expl Co | St Louis, MO 63304 | Oil Operator | Dec 2022 |
| 3021 | Black Gold Oil Company | Duncan, OK 73533-1581 | Oil & Gas Operator | Apr 2025 |
| 3022 | Black Gold Operating Co, LLC | Plntersville, TX 77363 | Oil & Gas Operator | Jul 2025 |
| 3023 | Black Gold Petroleum, LLC | Alice, TX 78333 | Oil Operator | Jul 2025 |
| 3024 | Black Gold Production Company | | Oil & Gas Operator | Feb 1998 |
| 3025 | Black Gold Properties | Lubbock, TX 79424 | Oil & Gas Operator | Feb 1999 |
| 3026 | Black Gold Resources LLC | Houston, TX 77056 | Oil Operator | Sep 2013 |
| 3027 | Black Gold Services Inc | Casper, WY 82644 | Oil & Gas Operator | May 2025 |
| 3028 | Black Gold Well Service | San Angelo, TX 76901 | Oil & Gas Operator | Jul 2025 |
| 3029 | Black Gold Well Service, Inc. | Towanda, KS 67144 | Oil Operator | Dec 2019 |
| 3030 | Black Hawk Petro | | Oil Operator | Dec 1993 |
| 3031 | Black Hawk Resources | | Oil & Gas Operator | Dec 1984 |
| 3032 | Black Hawk Resources Corporation | Denver, CO 80202 | Oil Operator | Mar 1986 |
| 3033 | Black Hawk Resources, LLC | Bowman, ND 58623 | Oil & Gas Operator | Jun 2011 |
| 3034 | Black Hills Exploration & Production Inc | Newcastle, WY 82701 | Oil & Gas Operator | May 2018 |
| 3035 | Black Hills Gas Resources, Inc. | Rapid City, SD 57702 | Oil & Gas Operator | Aug 2018 |
| 3036 | Black Hills Plateau Production LLC | | Oil & Gas Operator | May 2018 |
| 3037 | Black Hills Wyoming Gas LLC | Rapid City, SD 57709 | Gas Operator | May 2025 |
| 3038 | Black Horse Resources, LLC | Oklahoma City, OK 73112 | Oil & Gas Operator | Sep 2024 |
| 3039 | Black Jack Oil Co Inc | Holliday, TX 76366 | Oil & Gas Operator | May 2025 |
| 3040 | Black Jack Services, L.L.C. | Bastrop, TX 78602 | Oil & Gas Operator | Jul 2025 |
| 3041 | Black Jack Well Service, Inc. | Somerset, TX 78069 | Oil & Gas Operator | Aug 2003 |
| 3042 | Black Jewel Resources LTD Co | Berryville, AR 72616-0538 | Oil & Gas Operator | Dec 2014 |
| 3043 | Black Lava Operating LLC | | Oil & Gas Operator | Apr 2025 |
| 3044 | Black Mac Oil, Inc. | Hondo, TX 78861 | Oil Operator | Jul 2025 |
| 3045 | Black Mesa Energy LLC | Tulsa, OK 74103-4334 | Oil & Gas Operator | May 2025 |
| 3046 | Black Mountain Oil & Gas II LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2021 |
| 3047 | Black Mountain Oil Co. | | Oil & Gas Operator | Dec 1999 |
| 3048 | Black Mountain Operating LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jul 2025 |
| 3049 | Black Mountain Petroleum | Mogadore, OH 44260 | Oil & Gas Operator | Dec 2024 |
| 3050 | Black Mountain STX I LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jul 2025 |
| 3051 | Black Mountain SWD LP | Fort Worth, TX 76102 | Oil & Gas Operator | Jul 2025 |
| 3052 | Black Oak Exploration, LLC | Denver, CO 80210 | Oil & Gas Operator | Mar 2025 |
| 3053 | Black Oil Company, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Jun 2010 |
| 3054 | Black Pearl Exploration, L.L.C. | Houston, TX 77095 | Oil & Gas Operator | May 2015 |
| 3055 | Black Pearl Operating Comp., LLC | Houston, TX 77057 | Oil Operator | Jul 2025 |
| 3056 | Black Petroleum | | Oil Operator | Sep 1989 |
| 3057 | Black Petroleum Company | Wichita, KS 67277 | Oil Operator | Jan 2004 |
| 3058 | Black Pool Energy, LP | Houston, TX 77070 | Oil & Gas Operator | Jul 2024 |
| 3059 | Black Raven Energy Inc | | Oil & Gas Operator | Apr 2017 |
| 3060 | Black Resources | Borger, TX 79008 | Oil & Gas Operator | Jul 2025 |
| 3061 | Black Resources, Inc. | Granbury, TX 76049 | Oil & Gas Operator | Mar 2008 |
| 3062 | Black River Oil Corp And Golden Petroleum Corp | | Oil & Gas Operator | Dec 1989 |
| 3063 | Black River Operating LLC | Keller, TX 76248 | Oil & Gas Operator | Jul 2025 |
| 3064 | Black Rock Operating, L.L.C. | Northport, AL 35475 | Oil & Gas Operator | Mar 2025 |
| 3065 | Black Rock Resources, LLC | Russell, KS 67665 | Oil Operator | Mar 2025 |
| 3066 | Black Sable Energy, LLC | San Antonio, TX 78209 | Oil Operator | Jan 2018 |
| 3067 | Black Sheep Oil & Gas LLC | Odessa, TX 79768 | Oil & Gas Operator | Jul 2025 |
| 3068 | Black Sheep Operating, LLC | Amarillo, TX 79109 | Oil & Gas Operator | Jul 2025 |
| 3069 | Black Snake Petroleum, LLC | | Oil & Gas Operator | Oct 2024 |
| 3070 | Black Spot Oil Company, A General Partnership | Great Bend, KS 67530 | Oil Operator | Dec 2009 |
| 3071 | Black Star Energy Inc | | Oil Operator | May 2004 |
| 3072 | Black Star Oil Company | Plano, TX 75094 | Oil & Gas Operator | Jul 2025 |
| 3073 | Black Star Petro | | Oil Operator | Jul 1995 |
| 3074 | Black Star Petroleum Corp. | Oceanside, NY 11572 | Oil Operator | Oct 1997 |
| 3075 | Black Stone Energy Company | Houston, TX 77002 | Oil & Gas Operator | Mar 2004 |
| 3076 | Black Stone Energy Company, LLC | Houston, TX 77002 | Oil & Gas Operator | Jul 2025 |
| 3077 | Black Stone Oil Company | Dallas, TX 75244 | Oil & Gas Operator | Feb 1997 |
| 3078 | Black Stone Petroleum LLC | Wichita, KS 67206 | Oil Operator | Jul 2019 |
| 3079 | Black Strata LLC | Weatherford, TX 76086 | Oil Operator | Jul 2025 |
| 3080 | Black Swan Opco, LLC | Edmond, OK 73013 | Oil & Gas Operator | Jul 2025 |
| 3081 | Black Swan Operating, LLC | Denver, CO 80202 | Oil & Gas Operator | May 2023 |
| 3082 | Black Tea Oil, LLC | Wichita, KS 67206 | Oil Operator | Mar 2025 |
| 3083 | Black Thunder Oil LLC | Gillette, WY 82717 | Oil & Gas Operator | Jun 2025 |
| 3084 | Black Top Operating, LLC | Midland, TX 79706 | Oil & Gas Operator | Jul 2025 |
| 3085 | Black Velvet Petro. Co. | | Oil & Gas Operator | Dec 2007 |
| 3086 | Black W K Incorp | | Oil & Gas Operator | Sep 1991 |
| 3087 | Black W K Produc | | Oil & Gas Operator | Aug 1991 |
| 3088 | Black Warrior Methane Corp. | | Gas Operator | Mar 2025 |
| 3089 | Black Wendell D | Atwood, OK 74827-9706 | Oil & Gas Operator | Jan 2009 |
| 3090 | Black'S Oil & Gas | Borger, TX 79008 | Oil & Gas Operator | Jul 2025 |
| 3091 | Black, Frank J., Oil Operations, Inc. | Overland Park, KS 66213 | Oil & Gas Operator | Dec 2009 |
| 3092 | Black, Karl T. | Paradise, TX 76073 | Oil & Gas Operator | Aug 2003 |
| 3093 | Black-Travis, Inc. | Paola, KS 66071 | Oil Operator | Mar 2025 |
| 3094 | Blackbeard Operating East LLC | Midland, TX 79701-4532 | Oil & Gas Operator | Dec 2020 |
| 3095 | Blackbeard Operating, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Jul 2025 |
| 3096 | Blackberry Oil Company | Jennings, OK 74038-0068 | Oil & Gas Operator | Dec 2002 |
| 3097 | Blackbird Oil Co. | Great Bend, KS 67530 | Oil Operator | Feb 1996 |
| 3098 | Blackbrush O & G, Inc. | San Antonio, TX 78258 | Oil & Gas Operator | Apr 2012 |
| 3099 | Blackbrush O & G, LLC | San Antonio, TX 78259 | Oil & Gas Operator | Jul 2025 |
| 3100 | Blackburn Oil & Gas, Inc. | Kinsley, KS 67547 | Oil & Gas Operator | Sep 2004 |