| 1 | B & B Enterprises | | Oil Operator | Jan 2025 |
| 2 | B & B Oil & Gas Co., Inc. | | Gas Operator | Feb 1991 |
| 3 | B & B Oil Company | Corsicana, TX 75110 | Oil & Gas Operator | Nov 2024 |
| 4 | B & D Operating Company | | Oil & Gas Operator | Apr 1990 |
| 5 | B & E Oil Corporation | | Oil Operator | Sep 1985 |
| 6 | B & F Oil Enterprises | | Oil Operator | Dec 1998 |
| 7 | B & F Operating Company, Inc. | | Oil & Gas Operator | Mar 1995 |
| 8 | B & G Oil Company | | Oil & Gas Operator | Oct 2007 |
| 9 | B & H Oil Co. | Oklahoma City, OK 73108 | Oil & Gas Operator | Jan 2025 |
| 10 | B & K Operating Co., Inc. | | Oil Operator | Mar 2000 |
| 11 | B & M Oilfield Service, Inc. | | Oil Operator | Mar 1999 |
| 12 | B & M Operating Co., Inc. | Houston, TX 77006 | Oil & Gas Operator | Mar 2025 |
| 13 | B & R Operating Service | | Oil Operator | Jan 1990 |
| 14 | B & S Oil Company | Kermit, TX 79745 | Oil & Gas Operator | Jan 2025 |
| 15 | B & S Operating Co. | | Oil Operator | Jun 1996 |
| 16 | B & S Resources LLC | Choctaw, OK 73020 | Oil Operator | Dec 2024 |
| 17 | B & T Operating Co. | Dawson, TX 76639 | Oil & Gas Operator | Mar 2025 |
| 18 | B & V Oil Company | | Oil Operator | Jul 2002 |
| 19 | B & W Oil Co. | Artesia, NM 88210 | Oil & Gas Operator | Jan 2005 |
| 20 | B D K Oil Company | | Oil & Gas Operator | Aug 2000 |
| 21 | B E Enterprises, Inc | | Oil Operator | Dec 2024 |
| 22 | B K L Incorporated | Morton, TX 79346 | Oil & Gas Operator | Jun 2002 |
| 23 | B L S W Pleasure Corp., Inc | | Oil Operator | Mar 1990 |
| 24 | B M Oil, Inc. | | Oil & Gas Operator | May 2019 |
| 25 | B&B Oil Rental Tools, Inc. | | Oil Operator | Sep 1994 |
| 26 | B&L Exploration, L.L.C. | Metairie, LA 70001 | Oil & Gas Operator | Mar 2025 |
| 27 | B-B Production | Ira, TX 79527 | Oil & Gas Operator | Mar 2025 |
| 28 | B. & L. Oil Company | Seguin, TX 78155 | Oil & Gas Operator | Mar 2025 |
| 29 | B. A. Hardey, Jr. | | Oil Operator | Mar 1984 |
| 30 | B. G. Denton | | Oil & Gas Operator | Dec 2023 |
| 31 | B. J. Long | | Oil & Gas Operator | Nov 1989 |
| 32 | B. L. Ainsworth | | Oil Operator | Dec 1988 |
| 33 | B. L. G. Company | | Gas Operator | Nov 1989 |
| 34 | B. M. Hester | | Oil & Gas Operator | Mar 1993 |
| 35 | Baby Oil, Inc. | | Oil & Gas Operator | Oct 2017 |
| 36 | Baca Petroleum Corp. | Denver, CO 80202 | Oil & Gas Operator | Oct 2000 |
| 37 | Bach Energy Corporation | | Oil & Gas Operator | Jul 1992 |
| 38 | Bachman Resources Group Inc. | | Oil Operator | Nov 2024 |
| 39 | Bachtell Oil & Gas, LTD. | Longview, TX 75605 | Oil & Gas Operator | Mar 2025 |
| 40 | Backus & Lanford | | Oil Operator | Aug 1985 |
| 41 | Backus,Barnwell& Von Gonten | | Oil & Gas Operator | Oct 1984 |
| 42 | Badak Energy Inc. | | Oil & Gas Operator | Oct 2020 |
| 43 | Badak Energy-Carraway Co | | Oil Operator | Dec 1990 |
| 44 | Badger Energy LLC | | Oil & Gas Operator | Dec 2024 |
| 45 | Badger Oil Corporation | Lafayette, LA 70505 | Oil & Gas Operator | Nov 2011 |
| 46 | Badger Oil/Clovelly Oil | | Oil & Gas Operator | Oct 2004 |
| 47 | Baham Energy Services, LLC | | Oil Operator | Dec 2024 |
| 48 | Balco Energy Corporation | | Oil & Gas Operator | Jul 1983 |
| 49 | Ball Marketing, Inc. | | Oil & Gas Operator | Sep 1999 |
| 50 | Ballard Exploration Company,Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2025 |
| 51 | Bandera Oil & Gas Inc | Fulshear, TX 77441 | Oil & Gas Operator | Mar 2025 |
| 52 | Barataria Production SVCS, LLC | | Oil Operator | Sep 2009 |
| 53 | Barco Co. | | Oil & Gas Operator | Dec 2000 |
| 54 | Barcoo Exploration Inc. | | Gas Operator | Jan 1993 |
| 55 | Barfield Oil Corporation | | Oil & Gas Operator | Mar 2001 |
| 56 | Bargo Energy Company | Houston, TX 77010 | Oil & Gas Operator | May 2001 |
| 57 | Bargo Energy Corporation | | Oil & Gas Operator | Apr 2000 |
| 58 | Barnett Drilling & Production | | Gas Operator | Oct 1986 |
| 59 | Barnett Serio | | Gas Operator | Oct 1992 |
| 60 | Barnett Serio Exploration Co | | Oil & Gas Operator | Oct 1992 |
| 61 | Barnette & Sons, Inc | Dubach, LA 71235 | Oil & Gas Operator | Mar 2011 |
| 62 | Barnhart Co. | Houston, TX 77056 | Oil & Gas Operator | Mar 2025 |
| 63 | Barnwell Oil Company, Inc. | | Oil & Gas Operator | Sep 1991 |
| 64 | Barnwell Petroleum Corp. | | Oil & Gas Operator | Sep 1978 |
| 65 | Barron Utilities, Inc. | | Oil Operator | Jun 1999 |
| 66 | Barry & Campbell | | Oil & Gas Operator | Apr 1981 |
| 67 | Barry Rock Oil Co. Inc. | Plain Dealing, LA 71064 | Oil & Gas Operator | Dec 2024 |
| 68 | Barton Oil & Gas Co., Inc. | | Oil & Gas Operator | Sep 1993 |
| 69 | Baruch-Foster Corporation | Oklahoma City, OK 73126-6770 | Oil & Gas Operator | Feb 2001 |
| 70 | Bas Production, LLC | | Oil Operator | Nov 2019 |
| 71 | Basa Resources, Inc. | Dallas, TX 75254 | Oil & Gas Operator | Mar 2025 |
| 72 | Basf Corporation | Houston, TX 77027 | Oil & Gas Operator | Nov 1992 |
| 73 | Basic Earth Science Sys, Inc | | Oil Operator | May 1987 |
| 74 | Basic Energy & Affil Res. Inc. | | Oil & Gas Operator | May 2000 |
| 75 | Basic Energy Services, L.P. | Fort Worth, TX 76102 | Oil Operator | Mar 2025 |
| 76 | Basin Petroleum, Inc. | | Oil & Gas Operator | Jul 1995 |
| 77 | Bass Enterprises Production Co | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2006 |
| 78 | Bass-Franks | | Oil & Gas Operator | Jun 1997 |
| 79 | Baxter Drill. & Explor., Inc. | | Oil Operator | Jun 1997 |
| 80 | Bay Coquille, Inc. | | Oil & Gas Operator | Jun 2023 |
| 81 | Bay Gas, LLC | | Oil & Gas Operator | Dec 2024 |
| 82 | Bayou Bouillon Operating LLC | | Oil & Gas Operator | Dec 2024 |
| 83 | Bayou Carencro Oil Co. Inc. | | Oil Operator | Apr 2022 |
| 84 | Bayou Choctaw, Inc. | | Oil & Gas Operator | Jun 2004 |
| 85 | Bayou Couba Oil Company | | Oil & Gas Operator | May 2002 |
| 86 | Bayou Desiard Corporation | | Gas Operator | Dec 2002 |
| 87 | Bayou Drilling Fluids, Inc. | | Gas Operator | Jul 2020 |
| 88 | Bayou Exploration, Inc. | | Oil & Gas Operator | Aug 1989 |
| 89 | Bayou Gas Company Of Monroe La | | Gas Operator | Apr 2009 |
| 90 | Bayou L'Ours Oil & Gas Co. | | Gas Operator | Mar 1988 |
| 91 | Bayou Production Company, Inc. | | Oil & Gas Operator | Apr 1993 |
| 92 | Bayou Resources, Inc. | Houston, TX 77056 | Oil & Gas Operator | Jan 2015 |
| 93 | Bayou Resources, LLC | | Oil & Gas Operator | Dec 2024 |
| 94 | Bayou Sorrel Oil LLC | | Oil & Gas Operator | May 2015 |
| 95 | Bayou South Gas Gather. Co L C | | Oil Operator | Oct 2002 |
| 96 | Bayou State And Caldwell Oil | | Oil Operator | Dec 2024 |
| 97 | Bayou State Oil Corporation | | Oil & Gas Operator | Dec 2024 |
| 98 | Bayshore Exploration LLC | Bellville, TX 77418 | Oil & Gas Operator | Dec 2016 |
| 99 | BBH Operating Company | | Oil & Gas Operator | Feb 1986 |
| 100 | BCF Operating, LLC | | Oil & Gas Operator | Nov 2024 |