| 3201 | Key Energy Corporation | Enid, OK 73702-5349 | Oil & Gas Operator | Oct 2017 |
| 3202 | Key Energy Services Inc | Midland, TX 79705-5540 | Oil Operator | Jan 2008 |
| 3203 | Key Oil Company | Duncan, OK 73533 | Oil & Gas Operator | Dec 2021 |
| 3204 | Key Operating Company Inc | Duncan, OK 73534-1284 | Oil & Gas Operator | Jan 2025 |
| 3205 | Key Production Company, Inc. | Longview, TX 75606 | Oil & Gas Operator | Aug 2025 |
| 3206 | Keystone Oil And Gas Company LLC | Collinsville, OK 74021 | Oil & Gas Operator | Aug 2025 |
| 3207 | Keystone Production Company | Duncan, OK 73533-9117 | Oil & Gas Operator | May 2005 |
| 3208 | Kiamichi Resources Inc | Oklahoma City, OK 73143 | Oil & Gas Operator | Feb 2016 |
| 3209 | Kibtec Oil & Gas Inc | Cashion, OK 73016 | Oil & Gas Operator | Aug 2024 |
| 3210 | Kickapoo Oil Co | Baton Rouge, LA 70815 | Gas Operator | Feb 1994 |
| 3211 | Kidd Bill R | Bristow, OK 74010-9721 | Oil Operator | Jan 2013 |
| 3212 | Kidd Oil & Gas, LC | Dallas, TX 75219 | Oil & Gas Operator | Apr 1999 |
| 3213 | Kiefer Oil And Gas Co Inc | Sapulpa, OK 74066 | Oil & Gas Operator | Apr 2011 |
| 3214 | Kienzle John A | Shawnee, OK 74802-1265 | Oil & Gas Operator | Aug 2013 |
| 3215 | Kiester Operating Company | Oklahoma City, OK 73106 | Oil & Gas Operator | Aug 2025 |
| 3216 | Kile Production | Cypress, TX 77410 | Oil & Gas Operator | Aug 2014 |
| 3217 | Kim Ray Oil & Gas | Ada, OK 74820 | Oil & Gas Operator | Aug 2025 |
| 3218 | Kimball Production Co. | Houston, TX 77042 | Oil & Gas Operator | Jul 2002 |
| 3219 | Kimbark Oil & Gas Company | Denver, CO 80203 | Oil & Gas Operator | May 2007 |
| 3220 | Kimco Oil And Gas | Wewoka, OK 74884-0613 | Oil & Gas Operator | Jul 2016 |
| 3221 | Kimraco Oil Inc | Pawnee, OK 74058-2869 | Oil & Gas Operator | Apr 2016 |
| 3222 | Kinder Oil Properties | Carney, OK 74832-9711 | Gas Operator | Nov 1999 |
| 3223 | King & Kelly | Tulsa, OK 74103 | Oil Operator | Aug 1993 |
| 3224 | King Energy LLC | Oklahoma City, OK 73116-9044 | Oil & Gas Operator | Sep 2025 |
| 3225 | King Jerry L | Wann, OK 74083-9727 | Oil & Gas Operator | Oct 2019 |
| 3226 | King Operating Corporation | Fort Worth, TX 76147 | Oil & Gas Operator | Dec 2025 |
| 3227 | Kingdom Resources Inc | Frisco, TX 75033-3673 | Oil & Gas Operator | Jun 2023 |
| 3228 | Kingery Drilling Co., Inc. | Ardmore, OK 73402 | Oil & Gas Operator | Sep 2025 |
| 3229 | Kingfisher CSG Pullr & Const Inc | Hennessey, OK 73742-0024 | Oil & Gas Operator | Apr 2014 |
| 3230 | Kingfisher Resources Inc | Clinton, OK 73601 | Oil & Gas Operator | Sep 2025 |
| 3231 | Kingman Petroleum Inc | Dolores, CO 81323-9503 | Oil & Gas Operator | Jun 2025 |
| 3232 | Kinta Public Works | Kinta, OK 74552 | Oil & Gas Operator | Mar 2011 |
| 3233 | Kirby Exploration Company | Houston, TX 77251 | Oil & Gas Operator | Jan 2014 |
| 3234 | Kirk Billie E | Morris, OK 74445 | Oil & Gas Operator | Aug 2025 |
| 3235 | Kirk David | Midland, TX 79705 | Oil & Gas Operator | Aug 2025 |
| 3236 | Kirk Tank Trucks Inc | Morris, OK 74445 | Oil & Gas Operator | Dec 2021 |
| 3237 | Kirkpatrick Oil Company | Nichols Hill, OK 73116 | Oil & Gas Operator | Dec 2025 |
| 3238 | Kirkpatrick Ronald B | | Oil & Gas Operator | Jul 2013 |
| 3239 | Kirkpatrick W E | Ponca City, OK 74604-4146 | Gas Operator | Oct 2001 |
| 3240 | Kirrie Oil Company LLC | Oklahoma City, OK 73113-0125 | Oil & Gas Operator | Jun 2025 |
| 3241 | Kiska Oil Company | Tulsa, OK 74114 | Oil & Gas Operator | Jan 2019 |
| 3242 | Kivett Kenneth W | Blackwell, OK 74631-0134 | Oil & Gas Operator | Jun 2001 |
| 3243 | KJB Oil Company LLC | Dewey, OK 74029-3053 | Oil Operator | Aug 2025 |
| 3244 | KJR Services LLC | Edmond, OK 73083 | Oil & Gas Operator | Jul 2025 |
| 3245 | Klabzuba Brothers LLC | Prague, OK 74864-0567 | Oil & Gas Operator | Jul 2007 |
| 3246 | Klabzuba Oil & Gas Inc | Denver, CO 80202 | Oil & Gas Operator | Aug 2012 |
| 3247 | Klabzuba Operating Company | Fort Worth, TX 76102 | Oil & Gas Operator | Aug 2013 |
| 3248 | Klabzuba Royalty Company | Prague, OK 74864-0567 | Oil & Gas Operator | Dec 2019 |
| 3249 | KLBW Partners, L.L.C. | Ratliff City, OK 73481 | Oil & Gas Operator | Aug 2025 |
| 3250 | Kleen Oilfield Services Co | Velma, OK 73491-0178 | Oil & Gas Operator | Aug 2025 |
| 3251 | Klingensmith Fred T Etal | Sapulpa, OK 74066 | Oil & Gas Operator | Nov 2007 |
| 3252 | Klinger Energy Inc | Ponca City, OK 74601-7812 | Oil & Gas Operator | Oct 2019 |
| 3253 | Klinger Shirley | Ponca City, OK 74601-7812 | Oil & Gas Operator | Aug 2025 |
| 3254 | KLM Oil & Gas Company | Tonganoxie, KS 66086 | Oil & Gas Operator | Apr 2014 |
| 3255 | Klo LLC | Tulsa, OK 74120-2428 | Oil & Gas Operator | Sep 2025 |
| 3256 | Kloberdanz Paul E | Oklahoma City, OK 73157 | Oil & Gas Operator | Aug 2021 |
| 3257 | Klotzman, M. S. Exploration Co. | Victoria, TX 77903 | Oil & Gas Operator | Dec 2025 |
| 3258 | KMV Consulting Inc | Winston Salem, NC 27101-2561 | Gas Operator | Dec 2012 |
| 3259 | KN Production Company | Lakewood, CO 80228 | Oil & Gas Operator | Jun 2003 |
| 3260 | KNG Producers | Dumas, TX 79029 | Oil & Gas Operator | Oct 2009 |
| 3261 | Knife Oil Company Inc | Cushing, OK 74023-1347 | Oil & Gas Operator | Aug 2000 |
| 3262 | Knight Energy Inc | Tulsa, OK 74104 | Oil Operator | Jul 2025 |
| 3263 | Knutson Production Company | Loco, OK 73442-9706 | Oil & Gas Operator | Aug 2025 |
| 3264 | Koby Oil Company LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Sep 2025 |
| 3265 | Koch Hydrocarbon Company | Wichita, KS 67220-3203 | Oil & Gas Operator | Nov 2014 |
| 3266 | Koch Oil Company | | Oil & Gas Operator | May 2017 |
| 3267 | Koda Operating LLC | Tyler, TX 75703-5596 | Oil & Gas Operator | Aug 2025 |
| 3268 | Kodiak Oil & Gas Exploration Inc | Oklahoma City, OK 73134-1046 | Oil & Gas Operator | Aug 2025 |
| 3269 | Kodiak Oil & Gas Inc | Muenster, TX 76252 | Oil & Gas Operator | Dec 2025 |
| 3270 | Koehler Rose Dba R & H Production | Cement, OK 73017 | Oil & Gas Operator | Oct 2021 |
| 3271 | Koelsch Rex Or Marie | Tulsa, OK 74107-8647 | Oil & Gas Operator | Jul 2024 |
| 3272 | Kolar Petroleum Inc | Oklahoma City, OK 73162-1509 | Oil & Gas Operator | Jun 2007 |
| 3273 | Kolibri Energy Us, Inc. | Thousand Oaks, CA 91320-1272 | Oil & Gas Operator | Aug 2025 |
| 3274 | Kopco Inc | Caney, KS 67333 | Oil & Gas Operator | Sep 2025 |
| 3275 | Kornblit, Majir | | Oil Operator | Nov 1998 |
| 3276 | Kouplen Steve | Beggs, OK 74421 | Oil & Gas Operator | Oct 2024 |
| 3277 | KP Exploration, Inc. | Houston, TX 77002 | Oil & Gas Operator | Apr 1997 |
| 3278 | KPL Production Company LLC | Oklahoma City, OK 73112-4709 | Oil & Gas Operator | Feb 2017 |
| 3279 | Kraker Petroleum Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Jan 1995 |
| 3280 | Krebbs, David B | | Oil & Gas Operator | Aug 2025 |
| 3281 | Krotzer Oil Company | Cleveland, OK 74020 | Oil & Gas Operator | Sep 2025 |
| 3282 | KRS Oil Company | Frisco, TX 75034 | Oil & Gas Operator | Apr 2020 |
| 3283 | Krumme Oil Company LLP | Bristow, OK 74010 | Oil & Gas Operator | Sep 2025 |
| 3284 | Krumme Wesley J | Oklahoma City, OK 73120 | Oil & Gas Operator | Jun 1997 |
| 3285 | KSW Operating,LLC | | Oil & Gas Operator | Mar 2015 |
| 3286 | KT Energy Inc | Enid, OK 73702-2365 | Oil & Gas Operator | Aug 2025 |
| 3287 | KT Investments Inc | Hennessey, OK 73742 | Oil & Gas Operator | Sep 2025 |
| 3288 | KTP Energy, Inc. | Denver, CO 80226 | Oil & Gas Operator | Aug 2019 |
| 3289 | Kuran Resources Inc | Wichita Falls, TX 76305 | Oil Operator | Jul 2021 |
| 3290 | KWB Oil Property Management Inc | Tulsa, OK 74103 | Oil & Gas Operator | Aug 2025 |
| 3291 | Ky Oil Co | Palco, KS 67657 | Oil & Gas Operator | Aug 2000 |
| 3292 | Kybenco Disposals LLC | Maysville, OK 73052 | Oil Operator | Sep 2022 |
| 3293 | Kyler Oil Company | Pawhuska, OK 74056-0117 | Oil Operator | Nov 1998 |
| 3294 | L & B Oil Company Inc | Houston, TX 77019-3115 | Oil & Gas Operator | Mar 2025 |
| 3295 | L & F Oil Company | Duncan, OK 73533-3636 | Oil Operator | Jun 2009 |
| 3296 | L & G Petroleum Operating, LLC | Havana, KS 67347 | Oil Operator | Jun 2025 |
| 3297 | L & H Energy Inc | Cherryvale, KS 67335 | Oil & Gas Operator | Sep 2019 |
| 3298 | L & L Producers | Independnce, KS 67301 | Oil Operator | Aug 2025 |
| 3299 | L & L Smith Energy Corporation | Muskogee, OK 74403-8479 | Oil & Gas Operator | Jan 2023 |
| 3300 | L & M Oil Co. | Yates Center, KS 66783 | Oil & Gas Operator | Dec 1998 |