| 1 | B & B Production Co | Midland, TX 79708 | Oil & Gas Operator | Dec 2002 |
| 2 | B & G Energy Corporation | Dallas, TX 75214 | Oil & Gas Operator | Jun 2025 |
| 3 | Badger Oil Corporation | Lafayette, LA 70505 | Oil & Gas Operator | Nov 2011 |
| 4 | Baker Operating, Inc. | Odessa, TX 79764 | Oil & Gas Operator | Jun 2025 |
| 5 | Bam Permian Operating, LLC | Midland, TX 79707 | Oil & Gas Operator | Jun 2025 |
| 6 | Bargo Energy Company | Houston, TX 77010 | Oil & Gas Operator | May 2001 |
| 7 | Barnhart Co. | Houston, TX 77056 | Oil & Gas Operator | Jun 2025 |
| 8 | Basa Resources, Inc. | Dallas, TX 75254 | Oil & Gas Operator | Jun 2025 |
| 9 | Basic Energy Services, L.P. | Fort Worth, TX 76102 | Oil Operator | Jun 2025 |
| 10 | Basin Oil & Gas Operating LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Jun 2025 |
| 11 | Basin Well Service Of Odessa,Inc | Odessa, TX 79768 | Oil & Gas Operator | Jun 2025 |
| 12 | Bass Enterprises Production Co | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2006 |
| 13 | Baxter, Kelly H. Oil And Gas Co. | Austin, TX 78767 | Oil & Gas Operator | Nov 2010 |
| 14 | Baxter, Murphy H. | Houston, TX 77002 | Oil & Gas Operator | Sep 1998 |
| 15 | Bayridge Texas Corp. | Big Spring, TX 79720 | Oil & Gas Operator | Jul 2004 |
| 16 | BC Operating, Inc. | Midland, TX 79710 | Oil & Gas Operator | Jun 2025 |
| 17 | Beach Exploration, Inc. | Midland, TX 79701 | Oil & Gas Operator | Jun 2025 |
| 18 | Belco Energy Corp. | Dallas, TX 75231 | Oil & Gas Operator | Mar 2015 |
| 19 | Bellwether Exploration Company | Houston, TX 77010 | Oil & Gas Operator | May 2001 |
| 20 | Belmac, Inc. | Dallas, TX 75248 | Oil & Gas Operator | Nov 1998 |
| 21 | Berry Oil Comp. | Houston, TX 77002 | Oil & Gas Operator | Jul 2014 |
| 22 | Bettis, Boyle & Stovall | Graham, TX 76450 | Oil & Gas Operator | Jun 2025 |
| 23 | Big Lake J J Oil & Gas, Inc. | Big Lake, TX 76932 | Oil & Gas Operator | Jun 2025 |
| 24 | Birch Operations, Inc. | Houston, TX 77010 | Oil & Gas Operator | Jun 2025 |
| 25 | Bishop, D. L. | Midland, TX 79702 | Oil & Gas Operator | Mar 2012 |
| 26 | Black Arrow Operating, LLC | Dennis, TX 76439 | Oil & Gas Operator | Jun 2025 |
| 27 | Black Gold Energy LLC | Jenks, OK 74037 | Oil Operator | Jun 2024 |
| 28 | Black River Operating LLC | Keller, TX 76248 | Oil & Gas Operator | Jun 2025 |
| 29 | Black Swan Opco, LLC | Edmond, OK 73013 | Oil & Gas Operator | Jun 2025 |
| 30 | Blue Ridge Resources, LLC | Midland, TX 79710 | Oil & Gas Operator | Jun 2025 |
| 31 | Blue River Inc. | Abilene, TX 79608 | Oil Operator | Jun 2025 |
| 32 | Bluestem Energy Holdings, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Jun 2015 |
| 33 | Bonfire Operating LLC | Cresson, TX 76035 | Oil & Gas Operator | Jun 2025 |
| 34 | Bosque Texas Oil LLC | Houston, TX 77024 | Oil & Gas Operator | Jun 2025 |
| 35 | Boyd & McWilliams Energy Group | Midland, TX 79701 | Oil & Gas Operator | Jun 2025 |
| 36 | Boyles, L. S. | Del Rio, TX 78840 | Oil & Gas Operator | Jun 2025 |
| 37 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Feb 2025 |
| 38 | Brazos Petroleum, Inc. | Graham, TX 76450 | Oil & Gas Operator | Jun 2025 |
| 39 | Breck Operating Corp. | Breckenridge, TX 76424 | Oil & Gas Operator | Feb 2025 |
| 40 | Breitburn Operating LP | Houston, TX 77002 | Oil & Gas Operator | Jun 2025 |
| 41 | Bright & Company | The Colony, TX 75056 | Oil & Gas Operator | May 2015 |
| 42 | Bristol Resources Corporation | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2022 |
| 43 | Broad Oak Energy, Inc. | Farmers BRNCH, TX 75234 | Oil & Gas Operator | Jul 2011 |
| 44 | Brothers Production Company Inc. | Midland, TX 79708 | Oil & Gas Operator | Jun 2025 |
| 45 | Brown Tom Inc | Dallas, TX 75240 | Oil & Gas Operator | Mar 2015 |
| 46 | Brown, George R. Partnership,The | Houston, TX 77002 | Oil & Gas Operator | May 2006 |
| 47 | Brown, H.L. Operating, L.L.C. | Midland, TX 79702 | Oil & Gas Operator | Jun 2025 |
| 48 | Browning Oil Company, Inc. | Dallas, TX 75251 | Oil & Gas Operator | Jun 2025 |
| 49 | Bta Oil Producers | Midland, TX 79701 | Oil & Gas Operator | Sep 2009 |
| 50 | Bta Oil Producers, LLC | Midland, TX 79701 | Oil & Gas Operator | Jun 2025 |
| 51 | Buckeye Oil Producing Co. | Wooster, OH 44691-129 | Oil & Gas Operator | Dec 2024 |
| 52 | Burk Royalty Co., LTD. | Wichita Falls, TX 76308 | Oil & Gas Operator | Jun 2025 |
| 53 | Burleson Petroleum, Inc. | Midland, TX 79702 | Oil & Gas Operator | Jun 2025 |
| 54 | Burlington Resources Oil And Gas Co. | Houston, TX 77210 | Oil & Gas Operator | Mar 2023 |
| 55 | Bustamante Resources LLC | Midland, TX 79710 | Oil & Gas Operator | Jun 2025 |