| 3101 | Kaiser Investments | Sand Springs, OK 74063 | Oil & Gas Operator | Sep 2003 |
| 3102 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | Jul 2025 |
| 3103 | Kal Energy Inc | Oklahoma City, OK 73116-3606 | Oil Operator | Nov 2014 |
| 3104 | Kalda Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 1994 |
| 3105 | Kalkman Oil Corporation | Duncan, OK 73533 | Oil & Gas Operator | Apr 2025 |
| 3106 | Kamco Hot Oil Service Inc | Cement, OK 73017 | Oil & Gas Operator | May 2025 |
| 3107 | Kana Resources, Inc. | Dallas, TX 75243 | Oil & Gas Operator | Aug 2003 |
| 3108 | Kandletop Operating, LLC | Oklahoma City, OK 73106 | Oil & Gas Operator | May 2025 |
| 3109 | Kaneb Operating Company | Dallas, TX 75265-0283 | Oil & Gas Operator | Dec 1995 |
| 3110 | Kanokla Oil & Gas Corporation | Wellington, KS 67152-0444 | Oil & Gas Operator | Apr 2025 |
| 3111 | Kansas Gas Purchasing | Salina, KS 67401 | Oil & Gas Operator | May 1995 |
| 3112 | Kantor Oil Company, LLC | Tulsa, OK 74136 | Oil & Gas Operator | May 2025 |
| 3113 | Karbuhn Oil Company | Tomball, TX 77375 | Oil & Gas Operator | Jul 2025 |
| 3114 | Kardaleff Steven T | Lawton, OK 73507-8471 | Oil Operator | Mar 2015 |
| 3115 | Karper Oil & Gas Corporation | Graham, TX 76450 | Oil & Gas Operator | Jul 2025 |
| 3116 | Kate F H | Oklahoma City, OK 73122 | Oil & Gas Operator | Jun 2000 |
| 3117 | Kato Operating Company | Bristow, OK 74010 | Oil & Gas Operator | Mar 2015 |
| 3118 | Katsco Energy, Inc. | Round Rock, TX 78664 | Oil & Gas Operator | Jul 2025 |
| 3119 | Katy Drilling Corporation | Tulsa, OK 74146-3717 | Oil & Gas Operator | Apr 2020 |
| 3120 | Kay County Properties | Tulsa, OK 74145 | Oil & Gas Operator | May 1997 |
| 3121 | Kay Production Company Inc | Seminole, OK 74868 | Oil & Gas Operator | Apr 2025 |
| 3122 | KC Resources Inc | Snowmass VLG., CO 81615 | Oil & Gas Operator | Apr 2025 |
| 3123 | KCS Medallion Resources, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Nov 2018 |
| 3124 | KCS Resources LLC | Houston, TX 77027 | Oil & Gas Operator | Feb 2017 |
| 3125 | Kechi Energy LLC | Chickasha, OK 73018 | Oil & Gas Operator | Apr 2025 |
| 3126 | Keck Petroleum LLC | Okmulgee, OK 74447-8516 | Oil & Gas Operator | Mar 2025 |
| 3127 | Keel Dwight E | Broken Arrow, OK 74014-7569 | Oil Operator | Apr 2020 |
| 3128 | Keener Oil & Gas Company | Tulsa, OK 74119-4416 | Oil & Gas Operator | May 2025 |
| 3129 | Keener Oil Company | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2018 |
| 3130 | Keesee Paul Inc | Holdenville, OK 74848 | Oil & Gas Operator | Nov 1998 |
| 3131 | Kehler & Kehler Oil Company | Skiatook, OK 74070-3674 | Oil & Gas Operator | Feb 2005 |
| 3132 | Keith F. Walker Oil & Gas Co., LLC | Oklahoma City, OK 73114 | Oil & Gas Operator | May 2025 |
| 3133 | Kelco Petroleum Inc | Oklahoma City, OK 73120 | Oil & Gas Operator | May 2013 |
| 3134 | Kelle Day Oil Producers Inc | Braman, OK 74632-9147 | Oil & Gas Operator | Dec 2023 |
| 3135 | Kelle Lambing Production Co | Braman, OK 74632-0132 | Oil & Gas Operator | Nov 2014 |
| 3136 | Keller Estate Leases LLC | Bartlesville, OK 74003-3608 | Oil Operator | Aug 2012 |
| 3137 | Kelley James C Estate | Norman, OK 73072 | Oil & Gas Operator | Mar 2015 |
| 3138 | Kelley Oil & Gas | McAlester, OK 74570 | Oil & Gas Operator | May 2013 |
| 3139 | Kelley, Joseph R | | Oil & Gas Operator | Apr 2025 |
| 3140 | Kellogg Oil Company | Henryetta, OK 74437 | Oil & Gas Operator | Oct 2024 |
| 3141 | Kelloil Inc | Fort Worth, TX 76116-5600 | Oil & Gas Operator | Mar 2015 |
| 3142 | Kelly Cook Oil LLC | Shawnee, OK 74804-3148 | Oil & Gas Operator | Apr 2025 |
| 3143 | Kelly Jr Walter A Opr Co | Stillwater, OK 74076 | Oil & Gas Operator | Apr 2014 |
| 3144 | Kelly Oil | Tulsa, OK 74105 | Oil Operator | Dec 2000 |
| 3145 | Kelmac Production Company | Braman, OK 74632-0132 | Oil Operator | Apr 2003 |
| 3146 | Kelmar Oil Company | Chickasha, OK 73018 | Oil & Gas Operator | Mar 2025 |
| 3147 | Kelt Oil & Gas | Houston, TX 77060 | Oil & Gas Operator | Dec 1998 |
| 3148 | Kelton Oil & Gas Co | Wheeler, TX 79096 | Oil Operator | Jun 1991 |
| 3149 | Kemmerer Company Inc | Tulsa, OK 74136-7027 | Oil & Gas Operator | Feb 2025 |
| 3150 | Kemp Roy L | | Oil Operator | Jan 2011 |
| 3151 | Ken Snyder Inc | Newalla, OK 74857-7107 | Oil & Gas Operator | Apr 2025 |
| 3152 | Kendol Exploration Inc | Oklahoma City, OK 73105-2513 | Oil & Gas Operator | Mar 2025 |
| 3153 | Kennedy & Mitchell, Inc. | Houston, TX 77084 | Oil & Gas Operator | Aug 2013 |
| 3154 | Kennedy, Howard E | | Oil & Gas Operator | May 1997 |
| 3155 | Kennedy, Tracy J | | Oil Operator | Apr 2025 |
| 3156 | Kenneth W. Cory, LTD. | Bellaire, TX 77401 | Oil & Gas Operator | Apr 2025 |
| 3157 | Keno Oil & Gas Inc | Hennessey, OK 73742 | Oil & Gas Operator | Jan 1995 |
| 3158 | Kent Oil Corporation | Blanchard, OK 73010-3619 | Oil & Gas Operator | Feb 2012 |
| 3159 | Kentry Oil Company | Kingston, OK 73439 | Oil Operator | Aug 2002 |
| 3160 | Kenworthy Operating Company | Tulsa, OK 74132 | Oil & Gas Operator | May 2009 |
| 3161 | Kepasa Corp | Oklahoma City, OK 73106 | Oil & Gas Operator | May 2025 |
| 3162 | Kepco Operating, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2025 |
| 3163 | Kepco. Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2015 |
| 3164 | Kerns Larry Dba Kerns Oil | Dewey, OK 74029-2457 | Oil Operator | Nov 2017 |
| 3165 | Kerr McGee Rocky MTN Corp | Denver, CO 80202-5736 | Oil & Gas Operator | Mar 2015 |
| 3166 | Kerr-McGee Corporation | Dallas, TX 75380 | Oil & Gas Operator | Apr 2025 |
| 3167 | Kerr-McGee Oil & Gas Onshore LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Feb 2017 |
| 3168 | Kerr-McGee Oil & Gas Onshore LP | Houston, TX 77046 | Oil & Gas Operator | Jul 2025 |
| 3169 | Kerr-McGee Refining Corp | Oklahoma City, OK 73125 | Oil & Gas Operator | Jun 2007 |
| 3170 | Key Energy Corporation | Enid, OK 73702-5349 | Oil & Gas Operator | Oct 2017 |
| 3171 | Key Energy Services Inc | Midland, TX 79705-5540 | Oil Operator | Jan 2008 |
| 3172 | Key Oil Company | Duncan, OK 73533 | Oil & Gas Operator | Dec 2021 |
| 3173 | Key Operating Co., Inc. | Duncan, OK 73534-1284 | Oil & Gas Operator | Jan 2025 |
| 3174 | Key Production Company, Inc. | Longview, TX 75606 | Oil & Gas Operator | Apr 2025 |
| 3175 | Keystone Oil And Gas Company LLC | Collinsville, OK 74021 | Oil & Gas Operator | Apr 2025 |
| 3176 | Keystone Production Company | Duncan, OK 73533-9117 | Oil & Gas Operator | May 2005 |
| 3177 | Kiamichi Resources Inc | Oklahoma City, OK 73143 | Oil & Gas Operator | Feb 2016 |
| 3178 | Kibtec Oil & Gas Inc | Cashion, OK 73016 | Oil & Gas Operator | Aug 2024 |
| 3179 | Kickapoo Oil Co | Baton Rouge, LA 70815 | Gas Operator | Feb 1994 |
| 3180 | Kidd Bill R | Bristow, OK 74010-9721 | Oil Operator | Jan 2013 |
| 3181 | Kidd Oil & Gas, LC | Dallas, TX 75219 | Oil & Gas Operator | Apr 1999 |
| 3182 | Kiefer Oil And Gas Co Inc | Sapulpa, OK 74066 | Oil & Gas Operator | Apr 2011 |
| 3183 | Kienzle John A | Shawnee, OK 74802-1265 | Oil & Gas Operator | Aug 2013 |
| 3184 | Kiester Operating Company | Oklahoma City, OK 73106 | Oil & Gas Operator | Mar 2025 |
| 3185 | Kile Production | Cypress, TX 77410 | Oil & Gas Operator | Aug 2014 |
| 3186 | Kim Ray Oil & Gas | Ada, OK 74820 | Oil & Gas Operator | Apr 2025 |
| 3187 | Kimball Production Co. | Houston, TX 77042 | Oil & Gas Operator | Jul 2002 |
| 3188 | Kimbark Oil & Gas Company | Denver, CO 80203 | Oil & Gas Operator | May 2007 |
| 3189 | Kimco Oil And Gas | Wewoka, OK 74884-0613 | Oil & Gas Operator | Jul 2016 |
| 3190 | Kimraco Oil Inc | Pawnee, OK 74058-2869 | Oil & Gas Operator | Apr 2016 |
| 3191 | King Energy LLC | Oklahoma City, OK 73116-9044 | Oil & Gas Operator | May 2025 |
| 3192 | King Jerry L | Wann, OK 74083-9727 | Oil & Gas Operator | Oct 2019 |
| 3193 | King Operating Corporation | Fort Worth, TX 76147 | Oil & Gas Operator | Jul 2025 |
| 3194 | Kingdom Resources Inc | Frisco, TX 75033-3673 | Oil & Gas Operator | Jun 2023 |
| 3195 | Kingery Drilling Co., Inc. | Ardmore, OK 73402 | Oil & Gas Operator | May 2025 |
| 3196 | Kingfisher CSG Pullr & Const Inc | Hennessey, OK 73742-0024 | Oil & Gas Operator | Apr 2014 |
| 3197 | Kingfisher Resources Inc | Clinton, OK 73601 | Oil & Gas Operator | May 2025 |
| 3198 | Kingman Petroleum Inc | Dolores, CO 81323-9503 | Oil & Gas Operator | Feb 2025 |
| 3199 | Kinta Public Works | Kinta, OK 74552 | Oil & Gas Operator | Mar 2011 |
| 3200 | Kirby Exploration Co | Houston, TX 77251 | Oil & Gas Operator | Jan 2014 |