| 1 | B & F Oil Enterprises | | Oil Operator | Dec 1998 |
| 2 | B & G Oil Company | | Oil & Gas Operator | Oct 2007 |
| 3 | B & H Oil Co. | Oklahoma City, OK 73108 | Oil & Gas Operator | Jul 2024 |
| 4 | B & V Oil Company | | Oil Operator | Jul 2002 |
| 5 | B & W Oil Company | Artesia, NM 88210 | Oil & Gas Operator | Mar 2023 |
| 6 | B D K Oil Company | | Oil & Gas Operator | Aug 2000 |
| 7 | B. A. Hardey, Jr. | | Oil Operator | Mar 1984 |
| 8 | Bach Energy Corporation | | Oil & Gas Operator | Jul 1992 |
| 9 | Backus & Lanford | | Oil Operator | Aug 1985 |
| 10 | Backus,Barnwell& Von Gonten | | Oil & Gas Operator | Oct 1984 |
| 11 | Badak Energy Inc. | | Oil & Gas Operator | Oct 2020 |
| 12 | Barco Co. | | Oil & Gas Operator | Dec 2000 |
| 13 | Barnwell Oil Company, Inc. | | Oil & Gas Operator | Sep 1991 |
| 14 | Barry Rock Oil Co. Inc. | Plain Dealing, LA 71064 | Oil & Gas Operator | Jun 2024 |
| 15 | Bas Production, LLC | | Oil Operator | Nov 2019 |
| 16 | Basic Energy & Affil Res. Inc. | | Oil & Gas Operator | May 2000 |
| 17 | Bass Enterprises Production Co | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2006 |
| 18 | Bayou Production Company, Inc. | | Oil & Gas Operator | Apr 1993 |
| 19 | Bayou South Gas Gather. Co L C | | Oil Operator | Oct 2002 |
| 20 | Bayou State And Caldwell Oil | | Oil Operator | Jun 2024 |
| 21 | Bayou State Oil Corporation | | Oil & Gas Operator | Jun 2024 |
| 22 | BCF Operating, LLC | | Oil & Gas Operator | Jun 2024 |
| 23 | BCM Energy Louisiana LLC | | Oil Operator | May 2014 |
| 24 | BCM Energy Operating LLC | Lafayette, LA 70503 | Oil Operator | Jun 2015 |
| 25 | Beach-Hollenshead TSTG & SVCS Inc. | | Oil Operator | Jan 2004 |
| 26 | Bear Minerals LLC | Dallas, TX 75214 | Oil Operator | Jul 2024 |
| 27 | Beck Oil Company | | Oil Operator | Sep 1996 |
| 28 | Beck Oil Inc | | Oil & Gas Operator | Jul 2024 |
| 29 | Bepco, L.P. | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2008 |
| 30 | Bert Fields, Jr. | | Oil & Gas Operator | Nov 1986 |
| 31 | Bev Exploration, Inc. | | Oil Operator | Jun 1985 |
| 32 | BHB Oil, Inc | | Oil & Gas Operator | May 2024 |
| 33 | BHP Billiton Petro (KCS Resources), LLC | | Oil & Gas Operator | Jul 2019 |
| 34 | BHP Billiton Petro (Txla Operating) Co. | | Gas Operator | Jul 2019 |
| 35 | BHP Billiton Petro (WSF Operating), Inc. | | Oil & Gas Operator | Jul 2019 |
| 36 | Big M Oil Company | | Oil & Gas Operator | Jul 2024 |
| 37 | Big Run Production Company | Tyler, TX 75701 | Oil & Gas Operator | Dec 2024 |
| 38 | Bill Gary | | Gas Operator | Jul 1995 |
| 39 | Bishop Petroleum Inc. | Houston, TX 77007 | Oil & Gas Operator | Dec 2024 |
| 40 | Black Bayou Gas Processing, Inc. | | Oil Operator | Jun 2024 |
| 41 | Black Bayou Gas Systems, Inc. | | Oil Operator | Feb 2009 |
| 42 | Black Bayou Management Co Inc. | | Oil & Gas Operator | Aug 1980 |
| 43 | Black Bayou Operating, LLC | Fort Worth, TX 76116 | Oil & Gas Operator | Jul 2024 |
| 44 | Black Bayou Petroleum | | Oil Operator | Jul 1999 |
| 45 | Black Bayou Resources, Inc. | | Oil & Gas Operator | Jun 1992 |
| 46 | Black Gold Resources LLC | Houston, TX 77056 | Oil Operator | Oct 2013 |
| 47 | Blanco Oil Company | San Antonio, TX 78230 | Oil & Gas Operator | Aug 2010 |
| 48 | Blocker Exploration Company | | Oil & Gas Operator | Apr 1983 |
| 49 | Blue Creek Resources, Inc. | | Oil & Gas Operator | May 1990 |
| 50 | Blue Diamond Drilling, Inc. | | Oil Operator | Nov 1995 |
| 51 | Blue Dome Operating, LLC | Tulsa, OK 74103 | Gas Operator | Dec 2024 |
| 52 | Bo Luvan | | Oil & Gas Operator | Oct 2003 |
| 53 | Bob Sibley | | Oil & Gas Operator | Jul 2024 |
| 54 | Bobby G. Martin Oil & Gas Co. | | Oil Operator | Nov 1990 |
| 55 | Bobby R. Hale | | Oil Operator | Dec 1992 |
| 56 | Bonner & Carter | | Oil & Gas Operator | Sep 1988 |
| 57 | Bopco, L.P. | Midland, TX 79701 | Oil & Gas Operator | Dec 2024 |
| 58 | Bowie Operating Company, LLC | Graham, TX 76450 | Oil & Gas Operator | Mar 2011 |
| 59 | Boyter Brothers | | Oil Operator | Jul 1995 |
| 60 | BPX (KCS Resources), LLC | | Oil & Gas Operator | Feb 2022 |
| 61 | BPX Operating Company | Denver, CO 80202 | Oil & Gas Operator | Dec 2024 |
| 62 | Brad Acree Pet. Consultants | | Oil & Gas Operator | Apr 1986 |
| 63 | Bradford Oil Company | Denver, CO 80249 | Oil & Gas Operator | Oct 2024 |
| 64 | Brammer Engineering, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2024 |
| 65 | Brasseaux Oil Company | Wichita Falls, TX 76309 | Oil & Gas Operator | Mar 2008 |
| 66 | Breck Operating Corp. | Breckenridge, TX 76424 | Oil & Gas Operator | Oct 2024 |
| 67 | Bridges Drilling | | Oil & Gas Operator | Jul 2024 |
| 68 | Bridges Oil Co Etal | | Oil Operator | Dec 1996 |
| 69 | Briggs Properties, L.L.C. | | Oil Operator | Mar 2015 |
| 70 | Bristol Resources Corporation | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2022 |
| 71 | Brooks And Lee | | Oil & Gas Operator | Dec 1994 |
| 72 | Brooks Oil Company | Kilgore, TX 75662 | Oil & Gas Operator | Dec 2024 |
| 73 | Brookston Energy, Inc. | Tyler, TX 75702 | Oil & Gas Operator | Dec 2024 |
| 74 | Brown Operating & MGMT Corp. | | Oil & Gas Operator | Feb 1991 |
| 75 | Bruce H. Weaver & Sons | | Oil Operator | Jul 2024 |
| 76 | Bruce H. Weaver Prod. | | Oil Operator | Nov 1987 |
| 77 | Bruce N. Lynn | | Oil & Gas Operator | Sep 1994 |
| 78 | Brumar, Inc. | | Oil Operator | Dec 1995 |
| 79 | Brumley Prod. | | Oil & Gas Operator | Jun 2006 |
| 80 | Bruxoil Inc | | Oil & Gas Operator | Sep 2024 |
| 81 | Bryan Fitzgerald Brantly Operating, LLC | | Oil Operator | Jul 2024 |
| 82 | Burnham & Browning DRLG Co. | | Oil Operator | Oct 1990 |
| 83 | Burns Oil & Gas Expl. | | Oil & Gas Operator | Jan 1985 |
| 84 | Byargeon & Sons Oil Co. | | Oil Operator | Nov 2000 |