| 101 | Medicine Bow Operating Company | Houston, TX 77002 | Oil & Gas Operator | Apr 2014 |
| 102 | Merit Energy Company, LLC | Dallas, TX 75009 | Oil & Gas Operator | Dec 2025 |
| 103 | Mesa Operating L | | Oil & Gas Operator | Dec 1996 |
| 104 | Mesa Petroleum C | | Oil & Gas Operator | Dec 1986 |
| 105 | Mobil Oil Corpor | | Oil & Gas Operator | Dec 1996 |
| 106 | Nightengale Henr | | Gas Operator | Nov 1996 |
| 107 | Occidental Energy Marketing, Inc. | Houston, TX 77227 | Gas Operator | Sep 2015 |
| 108 | Oil Producers, Inc. Of Kansas | Wichita, KS 67206 | Oil & Gas Operator | Apr 2026 |
| 109 | Oxy USA | | Oil Operator | Apr 1992 |
| 110 | Oxy USA Inc | Houston, TX 77046 | Oil & Gas Operator | Apr 2026 |
| 111 | Palmer Oil, Inc. | Garden City, KS 67846 | Oil & Gas Operator | Dec 2025 |
| 112 | Pantera Energy Company | Amarillo, TX 79101 | Oil & Gas Operator | Apr 2026 |
| 113 | Patrick R J Oper | | Oil & Gas Operator | Jan 1995 |
| 114 | Petroleum Corpor | | Oil Operator | Jan 1983 |
| 115 | Petroleum Incorp | | Oil & Gas Operator | Apr 1993 |
| 116 | Pioneer Natural Resources USA Inc | Irving, TX 75039 | Oil & Gas Operator | Dec 2025 |
| 117 | Pioneer Oil Company, Inc. | Vincennes, IN 47501 | Oil & Gas Operator | Dec 2025 |
| 118 | Plateau Operating Corporation | Nashville, TN 37205 | Oil & Gas Operator | Oct 2025 |
| 119 | Presco Western LLC | Houston, TX 77046 | Oil & Gas Operator | Dec 2025 |
| 120 | Presley Operating LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2026 |
| 121 | PT Oil LLC | Osage City, KS 66523 | Oil & Gas Operator | Dec 2025 |
| 122 | Quantum Operating Company | Denver, CO 80201 | Oil & Gas Operator | Dec 2012 |
| 123 | Quinque Operating Company | Liberal, KS 67905 | Oil & Gas Operator | Dec 2025 |
| 124 | R.J. Patrick Operating Co. | | Oil & Gas Operator | Jun 2006 |
| 125 | Raydon Exploration, Inc. | Oklahoma City, OK 73118 | Oil & Gas Operator | Apr 2026 |
| 126 | Redstone Oil & G | | Oil Operator | Sep 1989 |
| 127 | Redstone Oil & Gas Company | Dallas, TX 75225 | Oil & Gas Operator | Jan 2020 |
| 128 | Regency Field Services LLC | Dallas, TX 75201 | Oil Operator | Jul 2017 |
| 129 | Riviera Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2026 |
| 130 | Samuel Gary Jr. & Associates, Inc. | Denver, CO 80202 | Oil & Gas Operator | Dec 2025 |
| 131 | Sandridge Exploration And Production LLC | Oklahoma City, OK 73104 | Oil & Gas Operator | Apr 2026 |
| 132 | Scout Energy Management LLC | Dallas, TX 75240 | Oil & Gas Operator | Apr 2026 |
| 133 | Service Drilling Co., L.L.C. | Tulsa, OK 74119 | Oil & Gas Operator | Oct 2003 |
| 134 | Strata Exploration, Inc. | Fairfield, IL 62837 | Oil & Gas Operator | Dec 2025 |
| 135 | Stratakan Exploration, LLC | Plainville, KS 67663 | Oil & Gas Operator | Dec 2025 |
| 136 | Sublette Feeders LLC | Sublette, KS 67877 | Gas Operator | Dec 2025 |
| 137 | Te-Ray Energy Inc | Oklahoma City, OK 73108 | Oil & Gas Operator | Jan 2026 |
| 138 | Tema Oil Company | Amarillo, TX 79101 | Oil & Gas Operator | Jun 2009 |
| 139 | Tenneco Oil Comp | | Oil & Gas Operator | Aug 1995 |
| 140 | The Trees Oil Company | Wichita, KS 67208 | Oil & Gas Operator | Nov 2014 |
| 141 | Thoroughbred Associates LLC | Wichita, KS 67226 | Oil & Gas Operator | Dec 2025 |
| 142 | Three D Resources Inc | Liberal, KS 67905 | Oil & Gas Operator | Dec 2025 |
| 143 | Tomlinson Oil Co Inc | Great Bend, KS 67530 | Oil & Gas Operator | May 2025 |
| 144 | Trees Oil Compan | | Oil Operator | Jan 1995 |
| 145 | Triple Seven, Inc. | Oklahoma City, OK 73132 | Oil & Gas Operator | Nov 1997 |
| 146 | Union Pacific Re | | Oil & Gas Operator | Dec 1996 |
| 147 | Unknown | Houston, TX 77208 | Oil & Gas Operator | Dec 2024 |
| 148 | Veenker Resources Inc | Oklahoma City, OK 73113 | Oil & Gas Operator | Feb 2026 |
| 149 | Wallace Oil & Gas Inc | Oklahoma City, OK 73156 | Oil & Gas Operator | Apr 2026 |
| 150 | Western Pacific Farms, Inc. | Copeland, KS 67837 | Oil & Gas Operator | Apr 2020 |
| 151 | White Exploration Inc | Wichita, KS 67278 | Oil & Gas Operator | Dec 2025 |
| 152 | White, Robert F. | Wichita, KS 67220 | Oil & Gas Operator | Feb 2007 |
| 153 | Wynn-Crosby Operating, LTD. | Dallas, TX 75201 | Oil & Gas Operator | Apr 2026 |
| 154 | XTO Energy Inc. | Spring, TX 77389 | Oil & Gas Operator | Apr 2026 |