| 101 | Compass Global Resources LLC | | Oil & Gas Operator | Dec 2015 |
| 102 | Conoco Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 103 | Core Energy LLC | | Oil & Gas Operator | Mar 2025 |
| 104 | Crimson Resource Management Corp. | | Oil & Gas Operator | Mar 2025 |
| 105 | Crupper Operating & Trading Company | | Oil & Gas Operator | Dec 1996 |
| 106 | D D Natural Resources LLC | | Oil & Gas Operator | Mar 2025 |
| 107 | Damson Oil Corporation | Houston, TX 77210 | Oil & Gas Operator | Mar 2005 |
| 108 | Daybreak Oil And Gas, Inc. | | Oil & Gas Operator | Feb 2025 |
| 109 | Depco Inc. | Denver, CO 80202 | Oil & Gas Operator | Apr 2014 |
| 110 | Deuel Petroleum Company Inc. | | Oil & Gas Operator | Dec 1999 |
| 111 | Doc Oil Corp. | | Oil Operator | Dec 2006 |
| 112 | Dole Enterprises Inc. | | Oil & Gas Operator | Mar 2025 |
| 113 | Donald Len Barreth | | Oil & Gas Operator | Dec 1991 |
| 114 | Dos Lobos Oil Co. | | Oil Operator | Dec 1999 |
| 115 | Double Barrel Oil Co. | | Oil Operator | Dec 1978 |
| 116 | Drilling & Production Co. | | Oil & Gas Operator | Feb 2025 |
| 117 | Drilling Exploration & Operating Co. Inc. | | Oil & Gas Operator | Mar 2025 |
| 118 | Dwayne'S Engineering | | Oil Operator | Feb 2025 |
| 119 | E & B Natural Resources Management Corporation | Hays, KS 67601 | Oil & Gas Operator | Feb 2025 |
| 120 | Eastern Pacific Oil Co. | | Oil & Gas Operator | Dec 1998 |
| 121 | Edison Beneficial Reuse | | Oil & Gas Operator | Feb 2025 |
| 122 | Ehb Oil Company | | Oil Operator | Dec 2001 |
| 123 | Elf Aquitaine Inc | Houston, TX 77002 | Oil & Gas Operator | May 1991 |
| 124 | Emjayco L. P. | | Oil Operator | Dec 2020 |
| 125 | Enerfin Resources Northwest Limited Partnership | | Oil & Gas Operator | Jan 2022 |
| 126 | Energy Development Of California Inc. | | Oil & Gas Operator | Dec 2004 |
| 127 | Energy Production & Sales Co. | | Oil & Gas Operator | Dec 1999 |
| 128 | Engineers Oil Company | | Oil & Gas Operator | Mar 2025 |
| 129 | EOG Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | May 2025 |
| 130 | Etchegoin Oil LLC | | Oil & Gas Operator | Feb 2025 |
| 131 | Exxon Mobil Corporation | Spring, TX 77389 | Oil & Gas Operator | May 2025 |
| 132 | Foothill Energy, LLC | Spring, TX 77393 | Oil & Gas Operator | May 2025 |
| 133 | Forest Gray Energy | | Oil & Gas Operator | Feb 2025 |
| 134 | Formax Oil Company | | Oil & Gas Operator | Dec 1993 |
| 135 | Fortune Petroleum Corporation | | Oil & Gas Operator | Dec 1994 |
| 136 | Four Star Oil & Gas Company | Houston, TX 77252 | Oil & Gas Operator | Feb 2025 |
| 137 | Fourstar Resources LLC | Westlake, TX 76262 | Oil Operator | Mar 2025 |
| 138 | Franklin Oil Company | | Oil & Gas Operator | Dec 2005 |
| 139 | Freedom Oil Company LLC | | Oil Operator | Feb 2025 |
| 140 | Freeport-McMoran Oil & Gas LLC | Houston, TX 77002 | Oil & Gas Operator | Mar 2025 |
| 141 | Fruitvale Properties | | Oil & Gas Operator | Dec 1990 |
| 142 | G. H. Preuitt | | Oil & Gas Operator | Feb 2025 |
| 143 | G. L. Stafford Jr. | | Oil Operator | Dec 1996 |
| 144 | Gary Drilling Company | | Oil & Gas Operator | Dec 2000 |
| 145 | General Production Oil LLC | | Oil Operator | Dec 2025 |
| 146 | Geo Petroleum, Inc. | Borger, TX 79007 | Oil & Gas Operator | May 2025 |
| 147 | Glendale Oil LLC | | Oil & Gas Operator | Mar 2025 |
| 148 | Golden Gate Oil Operations LLC | | Oil & Gas Operator | Feb 2025 |
| 149 | Golden Valley Energy LLC | | Oil & Gas Operator | Mar 2025 |
| 150 | Gordon Dole | | Oil & Gas Operator | Mar 2025 |
| 151 | Grace Petroleum Corp. | Tulsa, OK 74103 | Oil & Gas Operator | Oct 1997 |
| 152 | Grapevine Energy LLC | | Oil & Gas Operator | Mar 2025 |
| 153 | Gravelle Family Trust | | Oil & Gas Operator | Dec 1999 |
| 154 | Gray Development Co. LLC | | Oil & Gas Operator | Mar 2025 |
| 155 | Grayson Service Inc. | | Oil & Gas Operator | Mar 2025 |
| 156 | Great Western Drilling | | Oil Operator | Dec 2002 |
| 157 | Green Earth Resources Inc. | | Oil & Gas Operator | Dec 2020 |
| 158 | Griffin Resources LLC | Breckenridge, TX 76424 | Oil & Gas Operator | May 2025 |
| 159 | H.L. Hall & Sons LLC | | Oil & Gas Operator | Dec 2011 |
| 160 | Harry Feder | | Oil & Gas Operator | Dec 1999 |
| 161 | Harter Energy Inc. | Tulsa, OK 74105 | Oil & Gas Operator | Mar 2025 |
| 162 | Hartley Natural Resource Development | | Oil & Gas Operator | Feb 2025 |
| 163 | Harvest Petroleum Inc. | Frisco, TX 75033 | Oil & Gas Operator | May 2025 |
| 164 | Hathaway Company | | Oil & Gas Operator | Feb 2025 |
| 165 | Hathaway LLC | | Oil & Gas Operator | Mar 2025 |
| 166 | Havens Oil Company | Early, TX 76803 | Oil & Gas Operator | Feb 2025 |
| 167 | Hershey Oil Corporation | Seminole, TX 79360 | Oil & Gas Operator | Jul 1992 |
| 168 | Hexadyne Energy Corp. | | Oil & Gas Operator | Dec 2013 |
| 169 | Hickory-National Co. | | Oil Operator | Dec 1986 |
| 170 | Hilliard Oil & Gas Inc | New Orleans, LA 70112 | Oil & Gas Operator | May 2001 |
| 171 | Hoc Ca LLC | | Oil & Gas Operator | Apr 2025 |
| 172 | Holmes Western Oil Corporation | | Oil & Gas Operator | Mar 2025 |
| 173 | Howard E. Caywood Inc. | | Oil & Gas Operator | Mar 2025 |
| 174 | Hoyt Energy L.L.C. | | Oil Operator | Feb 2025 |
| 175 | Hrubetz Oil Co. | Dallas, TX 75225 | Oil Operator | Sep 1986 |
| 176 | Hubl/Harbin | | Oil Operator | Dec 1994 |
| 177 | Hunter Edison Oil Development Limited Partnership | | Oil & Gas Operator | Mar 2025 |
| 178 | Husky Oil Company | Cody, WY 82414 | Oil & Gas Operator | Dec 1984 |
| 179 | Hvi Cat Canyon Inc. | | Oil & Gas Operator | Feb 2025 |
| 180 | Incremental Oil & Gas USA Holdings Inc | Denver, CO 80202 | Oil & Gas Operator | Apr 2021 |
| 181 | Independent Exploration Company | | Oil & Gas Operator | Dec 2000 |
| 182 | Innex California Inc. | | Oil & Gas Operator | Feb 2025 |
| 183 | J & K Operating Company Inc. | | Oil & Gas Operator | Mar 2025 |
| 184 | J. E. Baker | | Oil Operator | Dec 1998 |
| 185 | J. M. Van Horn Operator | | Oil Operator | Dec 1989 |
| 186 | J.P. Oil Company LLC | | Oil & Gas Operator | Feb 2025 |
| 187 | Jaco Production Company | Bakersfield, CA 93380 | Oil Operator | Feb 2025 |
| 188 | James Sherman & Dennis Weese | | Oil & Gas Operator | Feb 2025 |
| 189 | John L. Sowers | | Oil & Gas Operator | Dec 2009 |
| 190 | JXR Company | | Oil Operator | Dec 1991 |
| 191 | K. G. H. Enterprises | | Oil Operator | Dec 2003 |
| 192 | Kaiser Energy Inc | Denver, CO 80202 | Oil & Gas Operator | Dec 1990 |
| 193 | KB Oil & Gas | | Oil & Gas Operator | Feb 2025 |
| 194 | Kelpetro Operating Inc. | | Oil & Gas Operator | Dec 2021 |
| 195 | Kem Enterprise Inc. | | Oil & Gas Operator | Mar 2025 |
| 196 | Kenneth H. Hunter Jr. | | Oil & Gas Operator | Dec 1991 |
| 197 | Kenneth H. Hunter Jr. Trustee Of The Hunter Living Trust | | Oil & Gas Operator | Dec 2001 |
| 198 | Kenneth Lopez And Conway Lopez | | Oil & Gas Operator | Feb 2025 |
| 199 | Kern Front-Section 35-Partners | | Oil & Gas Operator | Feb 2025 |
| 200 | Kern River Holdings II LLC | | Oil & Gas Operator | Mar 2025 |