| 3201 | Koch Hydrocarbon Company | Wichita, KS 67220-3203 | Oil & Gas Operator | Nov 2014 |
| 3202 | Koch Oil Company | | Oil & Gas Operator | May 2017 |
| 3203 | Koda Operating LLC | Tyler, TX 75703-5596 | Oil & Gas Operator | Jan 2026 |
| 3204 | Kodiak Oil & Gas Exploration Inc | Oklahoma City, OK 73134-1046 | Oil & Gas Operator | Feb 2026 |
| 3205 | Kodiak Oil & Gas Inc | Muenster, TX 76252 | Oil & Gas Operator | May 2026 |
| 3206 | Koehler Rose Dba R & H Production | Cement, OK 73017 | Oil & Gas Operator | Oct 2021 |
| 3207 | Koelsch Rex Or Marie | Tulsa, OK 74107-8647 | Oil & Gas Operator | Jul 2024 |
| 3208 | Kolar Petroleum Inc | Oklahoma City, OK 73162-1509 | Oil & Gas Operator | Jun 2007 |
| 3209 | Kolibri Energy Us, Inc. | Thousand Oaks, CA 91320-1272 | Oil & Gas Operator | Jan 2026 |
| 3210 | Kopco Inc | Caney, KS 67333 | Oil & Gas Operator | Oct 2025 |
| 3211 | Kornblit, Majir | | Oil Operator | Nov 1998 |
| 3212 | KP Exploration, Inc. | Houston, TX 77002 | Oil & Gas Operator | Apr 1997 |
| 3213 | KPL Production Company LLC | Oklahoma City, OK 73112-4709 | Oil & Gas Operator | Feb 2017 |
| 3214 | Kraker Petroleum Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Jan 1995 |
| 3215 | Krebbs, David B | | Oil & Gas Operator | Feb 2026 |
| 3216 | Krotzer Oil Company | Cleveland, OK 74020 | Oil & Gas Operator | Feb 2026 |
| 3217 | KRS Oil Company | Frisco, TX 75034 | Oil & Gas Operator | Apr 2020 |
| 3218 | Krumme Oil Company LLP | Bristow, OK 74010 | Oil & Gas Operator | Feb 2026 |
| 3219 | Krumme Wesley J | Oklahoma City, OK 73120 | Oil & Gas Operator | Jun 1997 |
| 3220 | KSW Operating,LLC | | Oil & Gas Operator | Mar 2015 |
| 3221 | KT Energy Inc | Enid, OK 73702-2365 | Oil & Gas Operator | Jan 2026 |
| 3222 | KT Investments Inc | Hennessey, OK 73742 | Oil & Gas Operator | Feb 2026 |
| 3223 | KTP Energy, Inc. | Lakewood, CO 80226 | Oil & Gas Operator | Aug 2019 |
| 3224 | Kuran Resources Inc | Wichita Falls, TX 76305 | Oil Operator | Jul 2021 |
| 3225 | KWB Oil Property Management Inc | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2026 |
| 3226 | Ky Oil Co | Palco, KS 67657 | Oil & Gas Operator | Aug 2000 |
| 3227 | Kybenco Disposals LLC | Lindsay, OK 73052 | Oil Operator | Mar 2026 |
| 3228 | Kyler Oil Company | Pawhuska, OK 74056-0117 | Oil Operator | Nov 1998 |
| 3229 | L & B Oil Company Inc | Dallas, TX 75225 | Oil & Gas Operator | Mar 2025 |
| 3230 | L & F Oil Company | Duncan, OK 73533-3636 | Oil Operator | Jun 2009 |
| 3231 | L & G Petroleum Operating, LLC | Havana, KS 67347 | Oil Operator | Jan 2026 |
| 3232 | L & H Energy Inc | Cherryvale, KS 67335 | Oil & Gas Operator | Sep 2019 |
| 3233 | L & L Producers | Independence, KS 67301 | Oil Operator | Feb 2026 |
| 3234 | L & L Smith Energy Corporation | Muskogee, OK 74403-8479 | Oil & Gas Operator | Jan 2023 |
| 3235 | L & M Oil Co. | Yates Center, KS 66783 | Oil & Gas Operator | Dec 1998 |
| 3236 | L & N Exploration Inc | | Oil & Gas Operator | Jul 2013 |
| 3237 | L & R Energy Corporation | Spearman, TX 79081 | Oil & Gas Operator | Nov 2014 |
| 3238 | L & R Oil Company | Oakley, KS 67748 | Oil & Gas Operator | Jan 2004 |
| 3239 | L & T Disposal LLC | Wilson, OK 73463-6545 | Oil Operator | Mar 2016 |
| 3240 | L And L Production Company | Skellytown, TX 79080 | Oil & Gas Operator | Sep 1996 |
| 3241 | L B G Operating Co | Fairfax, OK 74037 | Oil & Gas Operator | Oct 2014 |
| 3242 | L D & Associates | Broken Arrow, OK 74014-1712 | Oil Operator | Feb 2012 |
| 3243 | L&L Oil Company LLC | Copan, OK 74022-4608 | Oil Operator | Mar 2014 |
| 3244 | L.E. Jones Operating, Inc. | Duncan, OK 73534 | Oil & Gas Operator | Feb 2026 |
| 3245 | L.L. Oil Company | Freer, TX 78357 | Oil & Gas Operator | May 2026 |
| 3246 | Labo Oil Company Inc | Drumright, OK 74030-5619 | Oil & Gas Operator | Jul 2025 |
| 3247 | Lackey Danny | Kiefer, OK 74041-0702 | Oil & Gas Operator | Oct 2022 |
| 3248 | Lackey Raymond R | Lindsay, OK 73052 | Oil & Gas Operator | Jun 2015 |
| 3249 | Lackey Raymond R & Assoc | Sulphur, OK 73086 | Oil & Gas Operator | Feb 2026 |
| 3250 | Lackey WM Oil & Gas Oper Co | Shawnee, OK 74801 | Oil & Gas Operator | Jan 1994 |
| 3251 | Ladd LLC | El Reno, OK 73036 | Oil & Gas Operator | Nov 2018 |
| 3252 | Ladd Petroleum Corp. | Denver, CO 80202 | Oil & Gas Operator | Oct 2004 |
| 3253 | Ladder Energy Company | Tulsa, OK 74120-4281 | Oil & Gas Operator | Jan 2018 |
| 3254 | Lagoon Water Logistics LLC | Oklahoma City, OK 73103 | Oil Operator | Jul 2024 |
| 3255 | Laguna Petroleum Corporation | Houston, TX 77046 | Oil & Gas Operator | May 2026 |
| 3256 | Lahoma Production Inc | Jenks, OK 74037 | Oil & Gas Operator | Feb 2026 |
| 3257 | Laird Anita Louise | Asher, OK 74826-3215 | Oil Operator | Jun 2018 |
| 3258 | Laird Bill Oil Company | St Louis, OK 74866 | Oil & Gas Operator | Feb 2026 |
| 3259 | Lake Country Disposal II LLC | Wilson, OK 73463 | Oil Operator | Feb 2026 |
| 3260 | Lake Country Disposal LLC | Ardmore, OK 73401 | Oil Operator | Oct 2024 |
| 3261 | Lake Ronel Oil Company | Tyler, TX 75710 | Oil & Gas Operator | Jul 2017 |
| 3262 | Lakeland Pipeline Inc | Hominy, OK 74035-1006 | Oil & Gas Operator | Jun 2023 |
| 3263 | Lakeshore Operating, LLC | Wichita, KS 67203 | Oil & Gas Operator | May 2026 |
| 3264 | Lakewood Disposal LLC | Tulsa, OK 74136-1031 | Oil Operator | Aug 2018 |
| 3265 | Lakewood Energy Solutions LLC | | Oil Operator | Jun 2016 |
| 3266 | Lakewood Oil Company LLC | Mission Hills, KS 66208-2735 | Oil & Gas Operator | May 2013 |
| 3267 | Lakota Oil & Gas | Comanche, OK 73529-9602 | Oil & Gas Operator | May 2014 |
| 3268 | Lam Financial Holdings LTD | Greenwood VIllage, CO 80111 | Oil Operator | Dec 2025 |
| 3269 | Lamamco Drilling Company | Skiatook, OK 74070 | Oil & Gas Operator | Jan 2026 |
| 3270 | Lamb Alan L | Oklahoma City, OK 73120-7824 | Oil & Gas Operator | Feb 2020 |
| 3271 | Lambdin William H | Oklahoma City, OK 73120 | Oil & Gas Operator | Nov 1998 |
| 3272 | Lambert Company LLC | Ardmore, OK 73401 | Oil & Gas Operator | Feb 2026 |
| 3273 | Lambert Company The | Healdton, OK 73438-0962 | Oil & Gas Operator | Feb 2023 |
| 3274 | Lamberton Oil Co Inc | Tulsa, OK 74107 | Oil & Gas Operator | May 2013 |
| 3275 | Lamberton W J | Tulsa, OK 74119 | Oil & Gas Operator | Apr 2015 |
| 3276 | Lamima Corporation | Ardmore, OK 73401 | Oil Operator | Nov 1994 |
| 3277 | Laml Compaines LLC | Cleveland, OK 74020 | Oil Operator | Feb 2026 |
| 3278 | Lammerts Robert P | Oklahoma City, OK 73102 | Oil & Gas Operator | Jan 2002 |
| 3279 | Lance Ruffel Oil & Gas LLC | Oklahoma City, OK 73102-5632 | Oil & Gas Operator | Feb 2026 |
| 3280 | Lancer Energy Corporation | Oklahoma City, OK 73132-5903 | Oil & Gas Operator | May 2015 |
| 3281 | Lancer Petroleum Corporation | Irving, TX 75014 | Oil & Gas Operator | Feb 2014 |
| 3282 | Landers & Musgrove | Okemah, OK 74859 | Oil & Gas Operator | Mar 2015 |
| 3283 | Landers & Musgrove Oil Co. Inc | Okemah, OK 74859-0266 | Oil & Gas Operator | Jan 2018 |
| 3284 | Landers & Waldman Inc | Okemah, OK 74859-0660 | Oil & Gas Operator | May 2013 |
| 3285 | Landers Oil & Gas Inc | Tulsa, OK 74132-2171 | Oil & Gas Operator | Jan 2026 |
| 3286 | Landers Production Company | Granite, OK 73547-0093 | Oil Operator | Apr 2014 |
| 3287 | Landmark Energy LLC | Seminole, OK 74868 | Oil & Gas Operator | Jan 2026 |
| 3288 | Landmark Exploration Co | Tulsa, OK 74103 | Oil & Gas Operator | Oct 2013 |
| 3289 | Landmark Operating Company | Welty, OK 74833-3923 | Oil Operator | Aug 2015 |
| 3290 | Landmark Production Company | MC Gregor, TX 76657 | Oil & Gas Operator | Oct 2010 |
| 3291 | Langham Petroleum Expl. Corp. | Houston, TX 77056 | Oil & Gas Operator | Dec 2009 |
| 3292 | Langley Harold | Graham, OK 73437 | Oil Operator | Dec 2025 |
| 3293 | Lansden Operating Co LLC | Norman, OK 73070 | Oil & Gas Operator | Dec 1997 |
| 3294 | Lapetco Inc | Plano, TX 75093 | Oil & Gas Operator | Aug 2024 |
| 3295 | Lar-Mie Petroleum Inc | Tulsa, OK 74136 | Oil & Gas Operator | Aug 1998 |
| 3296 | Laran Operating LLC | Dover, OK 73734-0057 | Oil & Gas Operator | Mar 2015 |
| 3297 | Laredo Petroleum Inc | Tulsa, OK 74120 | Oil & Gas Operator | Mar 2023 |
| 3298 | Lariat Energy & Supply Co Inc | Hulbert, OK 74441 | Oil & Gas Operator | Feb 2026 |
| 3299 | Lariat Petroleum Inc | Tulsa, OK 74119 | Oil & Gas Operator | Sep 2024 |
| 3300 | Lario Oil & Gas Company | Odessa, TX 79762 | Oil & Gas Operator | May 2026 |