| 1 | 3 Amigos Oil Co. | Odessa, TX 79766 | Oil & Gas Operator | Oct 2025 |
| 2 | 3-M Energy Corporation | San Angelo, TX 76902 | Oil & Gas Operator | Jun 2017 |
| 3 | 7S Oil & Gas, LLC | Midland, TX 79706 | Oil & Gas Operator | Dec 2019 |
| 4 | A & B Oil | Monahans, TX 79756 | Oil & Gas Operator | Oct 2025 |
| 5 | A & G Oil Company, LLC | Barstow, TX 79719 | Oil & Gas Operator | Feb 2012 |
| 6 | Abraxas Petroleum Corporation | San Antonio, TX 78259 | Oil & Gas Operator | Oct 2025 |
| 7 | Abraxas Production Corporation | San Antonio, TX 78270 | Oil & Gas Operator | Sep 1999 |
| 8 | Accell Natural Gas Company | Houston, TX 77042 | Oil & Gas Operator | Sep 1998 |
| 9 | Acoma Operating, LLC | Lubbock, TX 79424 | Oil & Gas Operator | Oct 2025 |
| 10 | Acorn Oil & Gas, LLC | Iraan, TX 79744 | Oil & Gas Operator | Oct 2025 |
| 11 | Adgo Resources LLC | Midland, TX 79701 | Oil & Gas Operator | Nov 2018 |
| 12 | Aec Operating Company | Roswell, NM 88202 | Oil & Gas Operator | Sep 2006 |
| 13 | Aegis Fluids Management, LLC | Plano, TX 75093 | Oil & Gas Operator | Oct 2025 |
| 14 | Aggietech Oil, LTD. | Midland, TX 79701 | Oil & Gas Operator | Aug 2016 |
| 15 | Aikman Brothers, LLC | Amarillo, TX 79109 | Oil & Gas Operator | May 2025 |
| 16 | Aikman Oil Corp. | Oklahoma City, OK 73157 | Oil & Gas Operator | Oct 2025 |
| 17 | Alegre Energy, Inc. | San Antonio, TX 78216 | Oil & Gas Operator | Oct 2025 |
| 18 | Alleder Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 19 | Alpine Gas Company, LLC | Dallas, TX 75201 | Oil & Gas Operator | Oct 2006 |
| 20 | Altura Energy LTD. | Houston, TX 77210 | Oil & Gas Operator | Apr 2000 |
| 21 | Amax Oil & Gas Inc | Fort Worth, TX 76107 | Oil & Gas Operator | Nov 2014 |
| 22 | Ambrit Energy Corporation | Garland, TX 75044 | Oil & Gas Operator | Jun 2003 |
| 23 | Amerada Hess Corporation | Houston, TX 77252 | Oil & Gas Operator | Aug 2013 |
| 24 | American Exploration Company | Houston, TX 77010 | Oil & Gas Operator | Jan 2000 |
| 25 | American Resources, Inc. | Houston, TX 77079 | Oil & Gas Operator | Oct 2025 |
| 26 | American Royalty | Caldwell, TX 77836 | Oil & Gas Operator | Oct 2005 |
| 27 | Amoco Production Co. | Houston, TX 77253 | Oil & Gas Operator | Jun 2015 |
| 28 | Ampak Oil Company | Plano, TX 75074 | Oil & Gas Operator | Oct 2025 |
| 29 | Amron Petroleum, Inc. | Midland, TX 79708 | Oil & Gas Operator | Jan 1996 |
| 30 | Amtex Energy, Inc. | Fort Worth, TX 76147 | Oil & Gas Operator | Oct 2025 |
| 31 | Anadarko Petroleum Corporation | Houston, TX 77251 | Oil & Gas Operator | Jul 2025 |
| 32 | Apache Corporation | Houston, TX 77042 | Oil & Gas Operator | Oct 2025 |
| 33 | Approach Operating LLC | Fort Worth, TX 76116 | Oil & Gas Operator | Sep 2020 |
| 34 | Apv McCamey LLC | MC Camey, TX 79752 | Oil & Gas Operator | Oct 2025 |
| 35 | Apx & Assoc. | FT Stockton, TX 79735 | Oil & Gas Operator | Sep 1998 |
| 36 | Arch Oil & Gas, LLC | Dallas, TX 75254 | Oil & Gas Operator | Oct 2025 |
| 37 | Arco Oil & Gas Company | Plano, TX 75086 | Oil & Gas Operator | Mar 2006 |
| 38 | Arco Permian | Houston, TX 77079 | Oil & Gas Operator | Dec 2001 |
| 39 | Argee Oil Company | Midland, TX 79702 | Gas Operator | May 1994 |
| 40 | Argus Drilling, LLC | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 41 | Aries Operating LP | Houston, TX 77042 | Oil & Gas Operator | Oct 2025 |
| 42 | Aries Operating, LLC | Houston, TX 77010 | Oil & Gas Operator | Feb 2010 |
| 43 | Armor Petroleum, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Oct 2025 |
| 44 | Aroc (Texas) Inc | Houston, TX 77090 | Oil & Gas Operator | Dec 2014 |
| 45 | Arrington Oil&Gas Operating LLC | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 46 | Arrington,David H. Oil & Gas,Inc | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 47 | Arrowhead Operating Inc. | Argyle, TX 76226 | Oil & Gas Operator | Oct 2025 |
| 48 | Aspen Operating Company LLC | Fort Worth, TX 76116 | Oil & Gas Operator | Oct 2025 |
| 49 | Atapco | Houston, TX 77040 | Oil & Gas Operator | Feb 1999 |
| 50 | Atlantic Resources Company, LLC | Houston, TX 77002 | Oil & Gas Operator | Oct 2019 |
| 51 | Atoka Operating, Inc. | Gainesville, TX 76241 | Oil & Gas Operator | Oct 2025 |
| 52 | Atropos Exploration Company | Dallas, TX 75225 | Oil & Gas Operator | Oct 2025 |
| 53 | Atropos Production Corporation | Dallas, TX 75225 | Oil & Gas Operator | Oct 2025 |
| 54 | Aurivos LLC | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 55 | Avra Oil Co | Dallas, TX 75248 | Oil & Gas Operator | Oct 2025 |
| 56 | Awp Operating Company | George West, TX 78022 | Oil & Gas Operator | Oct 2025 |
| 57 | Axis Energy Corporation | Roswell, NM 88202 | Oil & Gas Operator | Oct 2025 |
| 58 | B & B Energy (I) | Imperial, TX 79743 | Oil & Gas Operator | Oct 2025 |
| 59 | B & B Operating Company | Odessa, TX 79760 | Oil & Gas Operator | Oct 2025 |
| 60 | B & H Oilfield Services | Midland, TX 79702 | Oil & Gas Operator | Jul 1996 |
| 61 | Badger Oil Company | Midland, TX 79701 | Oil & Gas Operator | Jun 1996 |
| 62 | Badger Oil Corporation | Lafayette, LA 70505 | Oil & Gas Operator | Nov 2011 |
| 63 | Baker Operating, Inc. | Odessa, TX 79764 | Oil & Gas Operator | Oct 2025 |
| 64 | Baker Resources | San Angelo, TX 76902 | Oil & Gas Operator | Aug 2021 |
| 65 | Baker Resources, LLC | San Angelo, TX 76902 | Oil & Gas Operator | Oct 2025 |
| 66 | Banks, R. C. | Midland, TX 79702 | Oil & Gas Operator | Apr 2016 |
| 67 | Barnhart Co. | Houston, TX 77056 | Oil & Gas Operator | Oct 2025 |
| 68 | Barrett Brothers Oil & Gas, Inc. | San Antonio, TX 78217 | Oil & Gas Operator | Dec 2020 |
| 69 | Basic Energy Services, L.P. | Fort Worth, TX 76102 | Oil Operator | Oct 2025 |
| 70 | Basin Oil & Gas Operating LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Oct 2025 |
| 71 | Bass Enterprises Production Co | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2006 |
| 72 | Batie, Patricia | Odessa, TX 79764 | Oil Operator | Nov 2024 |
| 73 | Baxter, Kelly H. | Austin, TX 78767 | Oil & Gas Operator | Mar 2008 |
| 74 | Baxter, Kelly H. Oil And Gas Co. | Austin, TX 78767 | Oil & Gas Operator | Nov 2010 |
| 75 | Baxter, Murphy H. | Houston, TX 77002 | Oil & Gas Operator | Sep 1998 |
| 76 | Bay Rock Operating Company | San Antonio, TX 78212 | Oil & Gas Operator | Oct 2025 |
| 77 | Baylor Operating, LLC | San Antonio, TX 78217 | Oil & Gas Operator | Oct 2025 |
| 78 | Baytech Inc | Midland, TX 79702 | Oil & Gas Operator | Aug 2003 |
| 79 | BC Operating, Inc. | Midland, TX 79710 | Oil & Gas Operator | Oct 2025 |
| 80 | Beach Exploration, Inc. | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 81 | Beach Oil & Gas, Inc. | Lubbock, TX 79464 | Oil & Gas Operator | Oct 2025 |
| 82 | Beaver Oil & Gas Operating, LLC | Austin, TX 78746 | Oil & Gas Operator | Oct 2025 |
| 83 | Bebco Parts Industries, Inc. | Monahans, TX 79756 | Oil & Gas Operator | Oct 2025 |
| 84 | Belco Energy Corp. | Dallas, TX 75231 | Oil & Gas Operator | Mar 2015 |
| 85 | Belvan Corp. | Midland, TX 79701 | Oil & Gas Operator | Jun 1998 |
| 86 | Bennett, M. Brad LP | Midland, TX 79710 | Oil & Gas Operator | Jan 2006 |
| 87 | Bepco, L.P. | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2008 |
| 88 | Berexco Inc. | Wichita, KS 67208 | Oil & Gas Operator | Oct 2009 |
| 89 | Berry, O. H. | Midland, TX 79702 | Oil & Gas Operator | Dec 1993 |
| 90 | Besto Oil & Gas, Inc. | Odessa, TX 79768 | Oil & Gas Operator | Oct 2018 |
| 91 | Bettis, Boyle & Stovall | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 92 | BHP Petroleum (Americas) Inc | Houston, TX 77056 | Oil & Gas Operator | Mar 2015 |
| 93 | Big Star Oil & Gas, LLC | Midland, TX 79710 | Oil & Gas Operator | Sep 2017 |
| 94 | Bishop, D. L. | Midland, TX 79702 | Oil & Gas Operator | Mar 2012 |
| 95 | Bitz, M. J. Company | Fort Worth, TX 76116 | Oil & Gas Operator | Aug 2003 |
| 96 | BJG Operating Company | Midland, TX 79702 | Oil Operator | Oct 2025 |
| 97 | Black Bayou Operating, LLC | Fort Worth, TX 76116 | Oil & Gas Operator | Jan 2025 |
| 98 | Black Horse Resources, LLC | Oklahoma City, OK 73112 | Oil & Gas Operator | Sep 2024 |
| 99 | Black Mountain Oil & Gas II LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2021 |
| 100 | Black Mountain SWD LP | Fort Worth, TX 76102 | Oil & Gas Operator | Oct 2025 |