| 1 | B & M Operating Co., Inc. | Houston, TX 77006 | Oil & Gas Operator | Apr 2024 |
| 2 | B & R Operating, LLC | San Angelo, TX 76903 | Oil & Gas Operator | Jan 2007 |
| 3 | B.P. Productions Inc. | Victoria, TX 77904 | Oil & Gas Operator | Apr 2024 |
| 4 | Ballard Exploration Company,Inc. | Houston, TX 77002 | Oil & Gas Operator | Apr 2024 |
| 5 | Bass Enterprises Production Co | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2006 |
| 6 | Baxter, Kelly H. | Austin, TX 78767 | Oil & Gas Operator | Mar 2008 |
| 7 | Baxter, Kelly H. Oil And Gas Co. | Austin, TX 78767 | Oil & Gas Operator | Nov 2010 |
| 8 | Baxter, Murphy H. | Houston, TX 77002 | Oil & Gas Operator | Sep 1998 |
| 9 | Bay Rock Operating Company | San Antonio, TX 78212 | Oil & Gas Operator | Apr 2024 |
| 10 | Beach Exploration, Inc. | Midland, TX 79701 | Oil & Gas Operator | Apr 2024 |
| 11 | Bennett, M. Troy, Jr. | Freer, TX 78357 | Oil & Gas Operator | Apr 2024 |
| 12 | Berg Laney & Brown | Smackover, AR 71762 | Oil & Gas Operator | Jul 1995 |
| 13 | Bettis, Boyle & Stovall | Graham, TX 76450 | Oil & Gas Operator | Apr 2024 |
| 14 | BHP Petroleum (Americas) Inc | Houston, TX 77056 | Oil & Gas Operator | Mar 2015 |
| 15 | Big Shell Oil & Gas, Inc. | Taft, TX 78390 | Oil & Gas Operator | Apr 2024 |
| 16 | Bison Energy Partners, Inc. | Houston, TX 77060 | Oil & Gas Operator | Sep 2001 |
| 17 | Bison Energy Partners, LTD. | Houston, TX 77060 | Oil & Gas Operator | Apr 2002 |
| 18 | Black Bayou Operating, LLC | Fort Worth, TX 76116 | Oil & Gas Operator | Jan 2024 |
| 19 | Black Gold Operating Co, LLC | Plntersville, TX 77363 | Oil & Gas Operator | Apr 2024 |
| 20 | Blackbeard Operating, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Apr 2024 |
| 21 | Block "T" Petroleum, Inc. | Tyler, TX 75710 | Oil & Gas Operator | Apr 2024 |
| 22 | Blue Wing Energy, Inc. | Portland, TX 78374 | Oil & Gas Operator | Apr 2024 |
| 23 | Bluestone Natural Res. II, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Dec 2019 |
| 24 | Bluestone Natural Resources, LLC | Tulsa, OK 74114 | Oil & Gas Operator | Jan 2015 |
| 25 | BNP Petroleum Corporation | Corpus Chrsti, TX 78478 | Oil & Gas Operator | Apr 2024 |
| 26 | Bowman, Fred Inc. | Dallas, TX 75225 | Oil & Gas Operator | Feb 2014 |
| 27 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Jan 2024 |
| 28 | Bralex Operating LLC | Dallas, TX 75367 | Oil & Gas Operator | Apr 2024 |
| 29 | Braman, D. H., Jr. | Victoria, TX 77901 | Oil & Gas Operator | Dec 2008 |
| 30 | Brammer Supply Inc | Gainesville, TX 76240 | Oil & Gas Operator | Nov 2014 |
| 31 | Brayton Oil Corp. | Corpus Chrsti, TX 78476 | Oil & Gas Operator | Dec 1994 |
| 32 | Brayton Operating Corp. | Corpus Chrsti, TX 78476 | Oil & Gas Operator | Sep 2009 |
| 33 | Breck Operating Corp. | Breckenridge, TX 76424 | Oil & Gas Operator | Jan 2024 |
| 34 | Bridge Oil Company LP | Midland, TX 79702 | Oil & Gas Operator | May 1999 |
| 35 | Bridwell Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2024 |
| 36 | Brigham Oil & Gas, L.P. | Austin, TX 78730 | Oil & Gas Operator | Oct 2015 |
| 37 | Bright & Company | The Colony, TX 75056 | Oil & Gas Operator | May 2015 |
| 38 | Brower Oil & Gas Co., Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 2024 |
| 39 | Brown, H. L., Jr. | Midland, TX 79702 | Oil & Gas Operator | May 2002 |
| 40 | Brush Country Energy, L.L.C. | Reno, NV 89503 | Oil & Gas Operator | Nov 1998 |
| 41 | Bse Production Co. | Victoria, TX 77903 | Oil & Gas Operator | Apr 2024 |
| 42 | Buffalo Oil Corp. | Cotulla, TX 78014 | Oil & Gas Operator | Apr 2024 |
| 43 | Buffco Production, Inc. | Longview, TX 75606 | Oil & Gas Operator | Apr 2024 |
| 44 | Burk Royalty Co., LTD. | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2024 |
| 45 | Burk Royalty Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Jan 2002 |
| 46 | Burlington Resources O&G | Midland, TX 79710-1810 | Oil & Gas Operator | Mar 1997 |