| 101 | Energy Group Of America, Inc. | Hollister, MO 65672 | Oil Operator | Dec 2025 |
| 102 | Energy Lease Service Inc | Drumright, OK 74030-7403 | Oil & Gas Operator | Oct 2025 |
| 103 | Energyquest Management, LLC | Houston, TX 77090 | Oil & Gas Operator | Apr 2021 |
| 104 | Enertec Corporation | Nowata, OK 74048-0632 | Oil & Gas Operator | Sep 2018 |
| 105 | Envirotek Fuel Systems Inc | Dallas, TX 75243 | Oil & Gas Operator | May 2013 |
| 106 | Eott Energy Corporation | Oklahoma City, OK 73118 | Oil & Gas Operator | Dec 1995 |
| 107 | Equinox Oil Company Inc | Plainville, KS 67663 | Oil & Gas Operator | Dec 2019 |
| 108 | Equity Drilling Company Inc | Dewey, OK 74029 | Oil & Gas Operator | Nov 1998 |
| 109 | Escott Oil Inc | Nowata, OK 74048 | Oil & Gas Operator | Feb 2000 |
| 110 | Exploration Professionals Inc | Chelsea, OK 74016-0066 | Oil Operator | Dec 2023 |
| 111 | Exploration Technologies Inc | Crescent, OK 73028-0546 | Oil & Gas Operator | Mar 2015 |
| 112 | F & G Management LLC | Claremore, OK 74019-0392 | Oil Operator | Jul 2025 |
| 113 | Farmland Industries Inc | Kansas City, MO 64195-0111 | Oil & Gas Operator | Nov 1995 |
| 114 | Faulconer, Vernon E., Inc. | Tyler, TX 75711 | Oil & Gas Operator | Oct 2025 |
| 115 | Finney Drilling Company | Wann, OK 74083-2314 | Oil Operator | Jul 2018 |
| 116 | Fluor Oil & Gas Corporation | Midland, TX 79701 | Oil & Gas Operator | Aug 2019 |
| 117 | Foreman Joy | Guymon, OK 73942-3159 | Oil & Gas Operator | Jan 2003 |
| 118 | Foster Oil & Gas | Bartlesville, OK 74005 | Oil & Gas Operator | Mar 2014 |
| 119 | Foundation Energy Management, LLC | Addison, TX 75001 | Oil & Gas Operator | Dec 2025 |
| 120 | Fox Northeastern Oil & Gas Corp | Bartlesville, OK 74003-2226 | Oil & Gas Operator | Oct 2025 |
| 121 | Ganer Mark Oil & Gas | Owasso, OK 74055 | Oil & Gas Operator | Aug 2005 |
| 122 | Ganer Oil Company | Blackwell, OK 74631-4221 | Oil & Gas Operator | Jan 2022 |
| 123 | Garrett, Dwayne M | | Oil & Gas Operator | Dec 2000 |
| 124 | Gashoma Inc | Dewey, OK 74029 | Oil & Gas Operator | Oct 2019 |
| 125 | Gateway Resources USA Inc | Bartlesville, OK 74006 | Oil & Gas Operator | Aug 2025 |
| 126 | Gilliland Gerald D | Dewey, OK 74029-1639 | Oil Operator | Mar 2015 |
| 127 | Glenwood Operating LLC | Wichita Falls, TX 76309-4529 | Gas Operator | Sep 2025 |
| 128 | Goodnight Julie | Bixby, OK 74008 | Oil Operator | Sep 2023 |
| 129 | Gordon Brothers Oil Company | Stroud, OK 74079 | Oil & Gas Operator | Jul 2017 |
| 130 | Griggs Oil LLC | Dewey, OK 74029-0477 | Oil & Gas Operator | Aug 2025 |
| 131 | H & H Production | Wichita Falls, TX 76307 | Oil & Gas Operator | Mar 2015 |
| 132 | Haas Petroleum LLC | Prairie VIllage, KS 66208 | Oil Operator | Jun 2025 |
| 133 | Hall Edward L | Ada, OK 74820-3321 | Oil & Gas Operator | Sep 2025 |
| 134 | Hardin Productions | Okemah, OK 74859 | Oil & Gas Operator | Dec 2006 |
| 135 | Harper Joe Howard Dba J H Field Service | Nowata, OK 74048-9704 | Oil & Gas Operator | Sep 2025 |
| 136 | Hawkins Oil & Gas Inc | Tulsa, OK 74103 | Oil & Gas Operator | Dec 2016 |
| 137 | Hays Herb E & K S | Bartlesville, OK 74006 | Oil Operator | Jul 2025 |
| 138 | Hendrickson Lester | Delaware, OK 74027-9715 | Oil Operator | Mar 2015 |
| 139 | HHH & G Oil Co | Owasso, OK 74055 | Oil Operator | Jun 2020 |
| 140 | Hightower Oil & Gas | Cairo, IL 62914-0401 | Oil Operator | Nov 2014 |
| 141 | Hitchita #1 LP | Edmond, OK 73013-6628 | Oil & Gas Operator | Sep 1997 |
| 142 | Hixon James E | | Oil Operator | Feb 2004 |
| 143 | Hoco Inc | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 2025 |
| 144 | Horton Oil Company | Independence, KS 67301 | Oil & Gas Operator | Jul 2000 |
| 145 | Impact Energy Operating LLC | Oklahoma City, OK 73172 | Oil & Gas Operator | Oct 2025 |
| 146 | Infinity Oil & Gas Inc | Nowata, OK 74048 | Oil Operator | Jun 1993 |
| 147 | J & K Operating Co LLC | Delaware, OK 74027 | Oil & Gas Operator | Aug 2025 |
| 148 | J & S Gas Company | Ranger, TX 76470 | Oil & Gas Operator | Oct 2003 |
| 149 | J-O Oil Co | | Oil & Gas Operator | Dec 2000 |
| 150 | J-Tag Public Saltwater | Healtdon, OK 73438 | Oil Operator | Sep 1998 |
| 151 | J. C. Oil Company | Odessa, TX 79766 | Oil & Gas Operator | Mar 2015 |
| 152 | Jaed Oil Production Co Inc | Arkansas City, KS 67005-0902 | Oil & Gas Operator | Mar 2015 |
| 153 | Jesse'S Oilfield Service | Okemah, OK 74859 | Oil & Gas Operator | Sep 2014 |
| 154 | Jojon Petroleum Company | Dallas, TX 75219 | Oil & Gas Operator | Sep 2025 |
| 155 | JSD Resources Corporation | Barnsdall, OK 74002-3272 | Oil & Gas Operator | Jul 2025 |
| 156 | K & E Field Services Inc | Bartlesville, OK 74005-0518 | Oil & Gas Operator | Jun 2016 |
| 157 | K & K Oil | Chase, KS 67524 | Oil & Gas Operator | Oct 2019 |
| 158 | K C Crude Inc | Lenexa, KS 66215 | Oil & Gas Operator | Dec 2000 |
| 159 | Kelly Oil | Tulsa, OK 74105 | Oil Operator | Dec 2000 |
| 160 | Kenneth W Cory LTD | Bellaire, TX 77401 | Oil & Gas Operator | Oct 2025 |
| 161 | King Jerry L | Wann, OK 74083-9727 | Oil & Gas Operator | Oct 2019 |
| 162 | Kiska Oil Company | Tulsa, OK 74114 | Oil & Gas Operator | Jan 2019 |
| 163 | KJB Oil Company LLC | Dewey, OK 74029-3053 | Oil Operator | Aug 2025 |
| 164 | Kleen Oilfield Services Co | Velma, OK 73491-0178 | Oil & Gas Operator | Oct 2025 |
| 165 | Ky Oil Co | Palco, KS 67657 | Oil & Gas Operator | Aug 2000 |
| 166 | L & H Energy Inc | Cherryvale, KS 67335 | Oil & Gas Operator | Sep 2019 |
| 167 | L & L Producers | Independnce, KS 67301 | Oil Operator | Aug 2025 |
| 168 | L&L Oil Company LLC | Copan, OK 74022-4608 | Oil Operator | Mar 2014 |
| 169 | Ladder Energy Company | Tulsa, OK 74120-4281 | Oil & Gas Operator | Jan 2018 |
| 170 | Lahoma Production Inc | Jenks, OK 74037 | Oil & Gas Operator | Oct 2025 |
| 171 | Lakeland Pipeline Inc | Hominy, OK 74035-1006 | Oil & Gas Operator | Jun 2023 |
| 172 | Lamamco Drilling Company | Skiatook, OK 74070 | Oil & Gas Operator | Oct 2025 |
| 173 | Lance Ruffel Oil & Gas LLC | Oklahoma City, OK 73102-5632 | Oil & Gas Operator | Oct 2025 |
| 174 | Lapetco Inc | Plano, TX 75093 | Oil & Gas Operator | Aug 2024 |
| 175 | Larmore Jr James E | Bartlesville, OK 74006-8312 | Oil Operator | Mar 2017 |
| 176 | Latex Petroleum Corp. | Houston, TX 77090 | Oil & Gas Operator | Aug 2012 |
| 177 | Laurco Energies,Inc | | Oil & Gas Operator | May 2025 |
| 178 | Layton Oil Co | | Oil Operator | Feb 1994 |
| 179 | Leg Up Operating Company LLC | Tulsa, OK 74135 | Oil Operator | Oct 2025 |
| 180 | Lillard Pipe & Supply Inc | Shawnee, OK 74802-0847 | Oil & Gas Operator | Nov 2014 |
| 181 | Liston V Dean | Nowata, OK 74048-5200 | Oil & Gas Operator | Nov 2016 |
| 182 | Little Thunder, LLC | Bartlesville, OK 74003 | Oil Operator | Sep 2025 |
| 183 | Loving Company (The) | Broken Arrow, OK 74014-0001 | Oil & Gas Operator | May 2013 |
| 184 | Lyon Hoyle | Sasakwa, OK 74867 | Oil Operator | Sep 2025 |
| 185 | M & H Enterprises | Bartlesville, OK 74006-5504 | Oil & Gas Operator | Jan 2013 |
| 186 | Macro Oil Company | Bartlesville, OK 74006 | Oil Operator | Aug 1999 |
| 187 | Mantex Inc | Tulsa, OK 74114-6234 | Oil & Gas Operator | Mar 2015 |
| 188 | Marjo Operating Mid-Continent LLC | Tulsa, OK 74103 | Oil & Gas Operator | Oct 2025 |
| 189 | Mason Oil Company Inc | Nowata, OK 74048 | Oil Operator | Oct 2007 |
| 190 | Matoush Wade E | | Oil & Gas Operator | Mar 2014 |
| 191 | Mayabb Oil Company Inc | Tulsa, OK 74105-5158 | Oil & Gas Operator | Jul 2025 |
| 192 | McO Resources Integrated Corp | Houston, TX 77057 | Oil Operator | Jan 1997 |
| 193 | Meade James C | Oklahoma City, OK 73118-1544 | Gas Operator | Apr 2015 |
| 194 | Mel-Ray Oil Company | Nowata, OK 74048-0149 | Oil & Gas Operator | Mar 2004 |
| 195 | Mid-Continent Energy Operating Company | Tulsa, OK 74103 | Oil & Gas Operator | Oct 2025 |
| 196 | Mid-Way Environmental Services Inc | Stroud, OK 74079 | Oil Operator | Apr 2025 |
| 197 | Midgard Energy Company | The Woodlands, TX 77380 | Oil & Gas Operator | Dec 2014 |
| 198 | Milburn R Kenneth | Ardmore, OK 73402-1118 | Oil & Gas Operator | Sep 2014 |
| 199 | Moms Oil & Gas LLC | Nowata, OK 74048 | Oil & Gas Operator | Mar 2023 |
| 200 | Mueller Thomas C LTD | Oklahoma City, OK 73102-5683 | Gas Operator | Aug 2008 |