| 101 | Nuevo Texas Inc. | Houston, TX 77002 | Oil & Gas Operator | Dec 2004 |
| 102 | Nutek Oil Inc | San Antonio, TX 78254 | Oil & Gas Operator | Feb 2006 |
| 103 | O'Ryan Oil And Gas | Odessa, TX 79768 | Oil & Gas Operator | Mar 2025 |
| 104 | Occidental Energy Marketing, Inc. | Houston, TX 77227 | Gas Operator | Sep 2015 |
| 105 | Occidental Permian LTD. | Houston, TX 77046 | Oil & Gas Operator | Mar 2025 |
| 106 | Occidental W TX Overthrust, Inc. | Houston, TX 77210 | Oil & Gas Operator | Dec 2021 |
| 107 | Oxy USA Inc | Houston, TX 77046 | Oil & Gas Operator | Mar 2025 |
| 108 | Patno Oil & Gas Company | Zapata, TX 78076 | Oil & Gas Operator | Mar 2025 |
| 109 | Perry Producing Company, Inc. | Ackerly, TX 79713 | Oil & Gas Operator | Mar 2025 |
| 110 | Petrocorp Incorporated,A TX.Corp | Tulsa, OK 74170 | Oil & Gas Operator | Apr 2005 |
| 111 | Phoenix Hydrocarbons Operating | Midland, TX 79702 | Oil & Gas Operator | Jun 2024 |
| 112 | Piedra Operating, LLC | Denver, CO 80202 | Oil & Gas Operator | May 2023 |
| 113 | Prize Operating Company | Grapevine, TX 76051 | Oil & Gas Operator | Aug 2016 |
| 114 | Proex Energy Management, L.L.C. | Spring, TX 77386 | Oil & Gas Operator | Mar 2025 |
| 115 | Pure Resources, L.P. | Midland, TX 79701 | Oil & Gas Operator | Mar 2006 |
| 116 | PXP Texas Inc. | Houston, TX 77002 | Oil & Gas Operator | Feb 2007 |
| 117 | Quantum Resources Management LLC | Houston, TX 77010 | Oil & Gas Operator | Dec 2024 |
| 118 | Questar Expl. And Prod. Co. | Salt Lake Cty, UT 84145 | Oil & Gas Operator | Jul 2011 |
| 119 | Ramtex Energy LLC | Tulsa, OK 74114 | Oil & Gas Operator | Mar 2025 |
| 120 | Rand Oil & Gas Corp. | Houston, TX 77040 | Oil & Gas Operator | Mar 2025 |
| 121 | Rex Energy Operating Corp. | State College, PA 16801 | Oil & Gas Operator | Jun 2012 |
| 122 | Riata Energy Inc | Oklahoma City, OK 73101 | Oil & Gas Operator | Apr 2008 |
| 123 | Rimrock Production Inc. | Giddings, TX 78942 | Oil & Gas Operator | Mar 2025 |
| 124 | Rio-Tex, Inc. | San Antonio, TX 78217 | Oil & Gas Operator | Mar 2025 |
| 125 | Rme Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Nov 2016 |
| 126 | Roff Operating Company LLC | Houston, TX 77002 | Oil & Gas Operator | Mar 2025 |
| 127 | Romine Oil & Gas, LLC | Midland, TX 79710 | Oil & Gas Operator | Mar 2025 |
| 128 | Sandridge Energy, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2018 |
| 129 | Sandridge Exploration And Production LLC | Oklahoma City, OK 73104 | Oil & Gas Operator | Mar 2025 |
| 130 | Santa Fe Snyder Corporation | Houston, TX 77024 | Oil & Gas Operator | Oct 2000 |
| 131 | SBJ Oil & Gas | MC Camey, TX 79752 | Oil & Gas Operator | Feb 2009 |
| 132 | SBJ Oil & Gas, LLC | Iraan, TX 79744 | Oil & Gas Operator | Mar 2025 |
| 133 | Scout Energy Management LLC | Dallas, TX 75240 | Oil & Gas Operator | Mar 2025 |
| 134 | Seco Production Company | Midland, TX 79708 | Oil & Gas Operator | Aug 2003 |
| 135 | Shell Western E&P Inc. | Houston, TX 77001 | Oil & Gas Operator | May 2011 |
| 136 | Shidler, Mark L., Inc. | Houston, TX 77055 | Oil & Gas Operator | Mar 2025 |
| 137 | Silver Pines Energy Corp. | Houston, TX 77005 | Oil & Gas Operator | Dec 2024 |
| 138 | SMC Oil & Gas, Inc. | Midland, TX 79710 | Oil & Gas Operator | Mar 2025 |
| 139 | Smith Pipe Of Abilene | Abilene, TX 79608 | Oil & Gas Operator | Mar 2025 |
| 140 | Southwest Royalties Inc | Midland, TX 79710 | Oil & Gas Operator | Mar 2025 |
| 141 | Staley Operating Co. | Midland, TX 79702 | Oil & Gas Operator | Jan 2022 |
| 142 | Star Royalty Company | Oklahoma City, OK 73177 | Gas Operator | Sep 1998 |
| 143 | T2 Operating Corporation | Denver, CO 80202 | Oil & Gas Operator | Mar 2025 |
| 144 | Texaco E & P Inc | Houston, TX 77099 | Oil & Gas Operator | Mar 2025 |
| 145 | Texas Crude, Inc. | Houston, TX 77256 | Oil & Gas Operator | Oct 1995 |
| 146 | Thompson, J. Cleo | Dallas, TX 75201 | Oil & Gas Operator | May 2024 |
| 147 | Titan Resources I, Inc. | Midland, TX 79701 | Oil & Gas Operator | Jun 2000 |
| 148 | Union Pacific Resources Co. | Fort Worth, TX 76101 | Oil & Gas Operator | Sep 2002 |
| 149 | Universal Resources Corp. | Salt Lake Cty, UT 84145 | Oil & Gas Operator | Jan 2000 |
| 150 | Urban Oil & Gas Group, LLC | Plano, TX 75074 | Oil & Gas Operator | Mar 2025 |
| 151 | V-F Petroleum Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2025 |
| 152 | Vintage Petroleum, LLC | Houston, TX 77210 | Oil & Gas Operator | Dec 2019 |
| 153 | Vista Resources, Inc. (A) | Midland, TX 79701 | Oil & Gas Operator | Feb 2000 |
| 154 | W & T Offshore, L.L.C. | Houston, TX 77046 | Gas Operator | Jan 1999 |
| 155 | Wadi Petroleum Inc | Houston, TX 77014 | Oil & Gas Operator | May 2018 |
| 156 | White Rock Oil & Gas, LLC | Plano, TX 75024 | Oil & Gas Operator | Mar 2025 |
| 157 | Williams-Cody, Inc. | Houston, TX 77060 | Oil & Gas Operator | May 1994 |
| 158 | Wind River Resources Inc | Tulsa, OK 74136-6381 | Oil & Gas Operator | Jun 2010 |
| 159 | WTG Exploration | Midland, TX 79705 | Oil & Gas Operator | Mar 2025 |
| 160 | XTO Energy Inc. | Spring, TX 77389 | Oil & Gas Operator | Mar 2025 |
| 161 | Zachry Oil And Gas Properties | Midland, TX 79708 | Oil & Gas Operator | Mar 2025 |