| 101 | Regency Petroleum Co. | Irving, TX 75016 | Oil & Gas Operator | Aug 2002 |
| 102 | Rising Star Energy, L.L.C. | Dallas, TX 75219 | Oil & Gas Operator | Aug 2006 |
| 103 | Robertson Resources, Inc. | Midland, TX 79708 | Oil & Gas Operator | May 2024 |
| 104 | Roff Operating Company LLC | Houston, TX 77002 | Oil & Gas Operator | May 2024 |
| 105 | Roseland Oil & Gas Inc | Rockwall, TX 75087 | Oil & Gas Operator | Feb 2003 |
| 106 | Rubicon Oil & Gas, LLC | Midland, TX 79701 | Oil & Gas Operator | May 2024 |
| 107 | Santo Operating LLC | Houston, TX 77002 | Oil & Gas Operator | May 2024 |
| 108 | SDX Resources, Inc. | Midland, TX 79705 | Oil & Gas Operator | May 2024 |
| 109 | Seagull Midcon Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 110 | Sha-Jam Operating Corp. | Midland, TX 79701 | Oil & Gas Operator | May 2024 |
| 111 | Shaida, John H. | Wichita, KS 67226 | Oil & Gas Operator | May 2024 |
| 112 | Shell Western E&P | Houston, TX 77001 | Oil & Gas Operator | May 2024 |
| 113 | Shenandoah Petroleum Corporation | Midland, TX 79705 | Oil & Gas Operator | May 2024 |
| 114 | Shenandoah Resources LLC | Houston, TX 77086 | Oil & Gas Operator | Apr 2020 |
| 115 | SM Energy Company | Midland, TX 79707 | Oil & Gas Operator | May 2024 |
| 116 | Smith Energy Operating Company | Lubbock, TX 79423 | Oil & Gas Operator | May 2024 |
| 117 | Southland Royalty Company | Houston, TX 77210 | Oil & Gas Operator | Sep 2011 |
| 118 | Southwest Royalties Inc | Midland, TX 79710 | Oil & Gas Operator | May 2024 |
| 119 | Spiral Energy Corp. | Midland, TX 79705 | Oil & Gas Operator | Dec 2019 |
| 120 | SSC, Inc. | Lubbock, TX 79408 | Oil & Gas Operator | May 2024 |
| 121 | St. Mary Land & Exploration Co | Denver, CO 80201 | Oil & Gas Operator | Jun 2010 |
| 122 | Stelzer, E.A. Oil Company | Post, TX 79356 | Oil & Gas Operator | Feb 2002 |
| 123 | Stephens, Autry C. | Midland, TX 79701 | Oil & Gas Operator | Mar 2023 |
| 124 | Taylor-Link Operating Co. | Midland, TX 79702 | Oil & Gas Operator | Apr 2017 |
| 125 | Teon Management, LLC | Midland, TX 79704 | Oil & Gas Operator | Mar 2020 |
| 126 | Terrace Petroleum Corporation | Midland, TX 79701 | Oil & Gas Operator | Jul 2013 |
| 127 | Terrell Oil & Gas Production Co. | Hamlin, TX 79520 | Oil & Gas Operator | May 2024 |
| 128 | Texland Petroleum, L.P. | Fort Worth, TX 76107 | Oil & Gas Operator | May 2024 |
| 129 | Three Span Oil & Gas, Inc. | Midland, TX 79710 | Oil & Gas Operator | May 2024 |
| 130 | TMBR/Sharp Drilling, Inc. | Midland, TX 79703 | Oil & Gas Operator | Feb 2004 |
| 131 | Triag Energy Operating, Inc. | Midland, TX 79701 | Oil & Gas Operator | Jun 2014 |
| 132 | Tucker Drilling Company, Inc. | San Angelo, TX 76903 | Oil & Gas Operator | Jul 1996 |
| 133 | Umc Petroleum Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 134 | Unit Petroleum Company | Tulsa, OK 74170 | Oil & Gas Operator | May 2024 |
| 135 | United Operating, LLC *** | Midland, TX 79710 | Oil & Gas Operator | May 2024 |
| 136 | Urban Oil & Gas Group, LLC | Plano, TX 75074 | Oil & Gas Operator | May 2024 |
| 137 | Valla Energy Corporation | Odessa, TX 79762 | Oil & Gas Operator | Aug 2003 |
| 138 | Wagner & Brown, LTD. | Midland, TX 79702 | Oil & Gas Operator | Aug 2014 |
| 139 | Walsh & Watts Inc | Aledo, TX 76008 | Oil & Gas Operator | May 2024 |
| 140 | Westco Oil Company | Ozona, TX 76943 | Oil & Gas Operator | May 2024 |
| 141 | Western Reserves Oil Co Inc | Midland, TX 79705 | Oil & Gas Operator | Oct 2020 |
| 142 | Wheeler Operating Corporation | Fort Worth, TX 76101 | Oil & Gas Operator | May 2024 |
| 143 | White Rock Oil & Gas, LLC | Plano, TX 75024 | Oil & Gas Operator | May 2024 |
| 144 | Winn Operating, LLC | Kilgore, TX 75663 | Oil & Gas Operator | May 2024 |
| 145 | WMS Oil Company | Post, TX 79356 | Oil & Gas Operator | May 2019 |
| 146 | Xeric Oil & Gas Corporation | Midland, TX 79702 | Oil & Gas Operator | Apr 2014 |
| 147 | Yarborough Oil & Gas L.P. | Midland, TX 79701 | Oil & Gas Operator | Oct 2000 |
| 148 | Yates Energy Corporation | Roswell, NM 88202 | Oil & Gas Operator | May 2024 |
| 149 | Young, Marshall R., Oil Co. | Fort Worth, TX 76107 | Oil & Gas Operator | Mar 2011 |
| 150 | Yucca Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | May 2024 |