| 3301 | Lamb Alan L | Oklahoma City, OK 73120-7824 | Oil & Gas Operator | Feb 2020 |
| 3302 | Lambdin William H | Oklahoma City, OK 73120 | Oil & Gas Operator | Nov 1998 |
| 3303 | Lambert Company LLC | Healdton, OK 73438-0962 | Oil & Gas Operator | Apr 2025 |
| 3304 | Lambert Company The | Healdton, OK 73438-0962 | Oil & Gas Operator | Feb 2023 |
| 3305 | Lamberton Oil Co Inc | Tulsa, OK 74107 | Oil & Gas Operator | May 2013 |
| 3306 | Lamberton W J | Tulsa, OK 74119 | Oil & Gas Operator | Apr 2015 |
| 3307 | Lamima Corporation | Ardmore, OK 73401 | Oil Operator | Nov 1994 |
| 3308 | Laml Compaines LLC | Cleveland, OK 74020 | Oil Operator | Apr 2025 |
| 3309 | Lammerts Robert P | Oklahoma City, OK 73102 | Oil & Gas Operator | Jan 2002 |
| 3310 | Lance Ruffel Oil & Gas LLC | Oklahoma City, OK 73102-5632 | Oil & Gas Operator | May 2025 |
| 3311 | Lancer Energy Corporation | Oklahoma City, OK 73132-5903 | Oil & Gas Operator | May 2015 |
| 3312 | Lancer Petroleum Corporation | Irving, TX 75014 | Oil & Gas Operator | Feb 2014 |
| 3313 | Landers & Musgrove | Okemah, OK 74859 | Oil & Gas Operator | Mar 2015 |
| 3314 | Landers & Musgrove Oil Co. Inc | Okemah, OK 74859-0266 | Oil & Gas Operator | Jan 2018 |
| 3315 | Landers & Waldman Inc | Okemah, OK 74859-0660 | Oil & Gas Operator | May 2013 |
| 3316 | Landers Oil & Gas Inc | Tulsa, OK 74132-2171 | Oil & Gas Operator | Apr 2025 |
| 3317 | Landers Production Company | Granite, OK 73547-0093 | Oil Operator | Apr 2014 |
| 3318 | Landmark Energy LLC | Seminole, OK 74868 | Oil & Gas Operator | May 2025 |
| 3319 | Landmark Exploration Co | Tulsa, OK 74103 | Oil & Gas Operator | Oct 2013 |
| 3320 | Landmark Operating Company | Welty, OK 74833-3923 | Oil Operator | Aug 2015 |
| 3321 | Landmark Production Company | MC Gregor, TX 76657 | Oil & Gas Operator | Oct 2010 |
| 3322 | Langham Petroleum Expl. Corp. | Houston, TX 77056 | Oil & Gas Operator | Dec 2009 |
| 3323 | Langley Harold | Graham, OK 73437 | Oil Operator | Mar 2025 |
| 3324 | Lansden Operating Co LLC | Norman, OK 73070 | Oil & Gas Operator | Dec 1997 |
| 3325 | Lapetco Inc | Plano, TX 75093 | Oil & Gas Operator | Aug 2024 |
| 3326 | Lar-Mie Petroleum Inc | Tulsa, OK 74136 | Oil & Gas Operator | Aug 1998 |
| 3327 | Laran Operating LLC | Dover, OK 73734-0057 | Oil & Gas Operator | Mar 2015 |
| 3328 | Laredo Petroleum Inc | Tulsa, OK 74120 | Oil & Gas Operator | Mar 2023 |
| 3329 | Lariat Energy & Supply Co Inc | Hulbert, OK 74441 | Oil & Gas Operator | Apr 2025 |
| 3330 | Lariat Petroleum Inc | Tulsa, OK 74119 | Oil & Gas Operator | Sep 2024 |
| 3331 | Lario Oil & Gas Company | Odessa, TX 79762 | Oil & Gas Operator | Jul 2025 |
| 3332 | Larkin Energy Company Inc | Sasakwa, OK 74867 | Oil & Gas Operator | May 2022 |
| 3333 | Larkin Oil Co | Sasakwa, OK 74867 | Oil & Gas Operator | Aug 2015 |
| 3334 | Larkspur Operating LLC | Oklahoma City, OK 73034 | Oil & Gas Operator | Apr 2025 |
| 3335 | Larmore Jr James E | Bartlesville, OK 74006-8312 | Oil Operator | Mar 2017 |
| 3336 | Larron Energy Corporation | New Braunfels, TX 78132 | Oil & Gas Operator | Mar 2015 |
| 3337 | Larry Brown Dba Brown Oil Company | Ardmore, OK 73401 | Oil Operator | Apr 2015 |
| 3338 | Larry Sherman Oil LLC | Chandler, OK 74834 | Oil & Gas Operator | Jan 2025 |
| 3339 | Larry Wolff Dba Wolff'S Oilfield Service | Cushing, OK 74023-9789 | Oil & Gas Operator | May 2025 |
| 3340 | Larson Exploration Company | Tulsa, OK 74136-4939 | Oil & Gas Operator | Jul 2016 |
| 3341 | Larson Operating Company | Olmitz, KS 67564-8561 | Oil & Gas Operator | Dec 2019 |
| 3342 | Las Colinas Oil Corp. | Irving, TX 75062 | Oil & Gas Operator | Mar 2015 |
| 3343 | Lashley Oil Company Inc | Walters, OK 73572 | Oil Operator | Dec 2014 |
| 3344 | Lasmo Energy Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Jan 2024 |
| 3345 | Last Run LLC | Rillito, AZ 85246 | Oil & Gas Operator | May 2020 |
| 3346 | Latex Petroleum Corp. | Houston, TX 77090 | Oil & Gas Operator | Aug 2012 |
| 3347 | Latham Roger P C | Dallas, TX 75244 | Oil Operator | Apr 2015 |
| 3348 | Latigo Drilling Corporation | Duncan, OK 73533 | Oil & Gas Operator | Apr 2025 |
| 3349 | Latigo Oil And Gas Inc | Woodward, OK 73801 | Oil & Gas Operator | May 2025 |
| 3350 | Latigo Petroleum LLC | Pampa, TX 79066 | Oil & Gas Operator | Jul 2025 |
| 3351 | Latigo Petroleum, Inc. | Tulsa, OK 74119 | Oil & Gas Operator | Apr 2025 |
| 3352 | Lauck & Associates | Walnut Creek, CA 91789 | Oil & Gas Operator | Jan 2025 |
| 3353 | Laughlin Jack D | Cushing, OK 74023 | Oil & Gas Operator | Sep 2016 |
| 3354 | Laurco Energies,Inc | | Oil & Gas Operator | May 2025 |
| 3355 | Laurel Operating Company, Inc. | Stillwater, OK 74074-3025 | Oil & Gas Operator | Apr 2025 |
| 3356 | Laverty, Thomas R | | Oil & Gas Operator | Dec 2023 |
| 3357 | Law E Edward | Newkirk, OK 74647-2056 | Oil Operator | Mar 2025 |
| 3358 | Lawco Exploration Inc | Bentonville, AR 72712 | Oil & Gas Operator | Aug 2024 |
| 3359 | Lawco Holdings LLC | Bentonville, AR 72712 | Oil Operator | Apr 2025 |
| 3360 | Lawrence Hot Oil Service | Loco, OK 73442 | Oil & Gas Operator | May 2025 |
| 3361 | Lawrence James Oil Prop Inc | Catoosa, OK 74015 | Oil & Gas Operator | Feb 2012 |
| 3362 | Lawrence Roy Drilling Co Inc | Pawnee, OK 74058-0306 | Oil & Gas Operator | Aug 2000 |
| 3363 | Lawrence, C. F. & Assoc. Inc. | Lubbock, TX 79401 | Oil & Gas Operator | Jul 2025 |
| 3364 | Lawson George E | Sand Springs, OK 74063 | Oil & Gas Operator | May 2013 |
| 3365 | Layco Oil | Okmulgee, OK 74447-2065 | Oil & Gas Operator | Apr 2020 |
| 3366 | Layton Oil Co. | | Oil Operator | Feb 1994 |
| 3367 | LBJ Production Inc | Okmulgee, OK 74447 | Oil Operator | Nov 1998 |
| 3368 | LCB Resources LLC | Kingfisher, OK 73750-2322 | Oil & Gas Operator | May 2025 |
| 3369 | Ldo LLC | Skiatook, OK 74070 | Oil Operator | May 2025 |
| 3370 | Le Bas Operating Company, Inc. | Giddings, TX 78942 | Oil & Gas Operator | Mar 2000 |
| 3371 | Le Norman Energy Corporation | Duncan, OK 73534 | Oil & Gas Operator | Nov 2014 |
| 3372 | Le Norman Partners LLC | Duncan, OK 73533-9523 | Oil & Gas Operator | Feb 2012 |
| 3373 | Leake Keith D | Winfield, KS 67156-8871 | Oil Operator | Apr 2004 |
| 3374 | Leaman Oil Company | Roland, OK 74954 | Oil & Gas Operator | Apr 2014 |
| 3375 | Lear Petroleum Corp | Houston, TX 77210 | Oil & Gas Operator | Mar 2015 |
| 3376 | Lear Petroleum Exploration Inc | Dallas, TX 75206 | Oil & Gas Operator | Aug 1999 |
| 3377 | Leasehold Management Corp | Oklahoma City, OK 73107 | Oil & Gas Operator | Nov 2024 |
| 3378 | Leatherneck Energy Group Inc | Addison, TX 75001-6025 | Oil & Gas Operator | Apr 2020 |
| 3379 | Leavell Resources Corporation | Hays, KS 67601 | Oil & Gas Operator | Mar 2015 |
| 3380 | Ledford Jan Oil & Gas | Duncan, OK 73533-3210 | Oil Operator | Apr 2025 |
| 3381 | Lee Energy Exploration LTD | Oklahoma City, OK 73102-7114 | Oil & Gas Operator | Jul 2008 |
| 3382 | Lee Energy LLC | Edmond, OK 73034-7668 | Oil Operator | Jan 2005 |
| 3383 | Lee Jr W E | Beggs, OK 74421-2683 | Oil & Gas Operator | May 2013 |
| 3384 | Lee Of Tulsa Oil & Gas Inc | Tulsa, OK 74114-5634 | Oil & Gas Operator | Dec 2021 |
| 3385 | Lee Ron | Emory, TX 75440 | Oil Operator | May 2025 |
| 3386 | Leed Energy LLC | Purcell, OK 73080-1383 | Oil & Gas Operator | Apr 2025 |
| 3387 | Leede Oil & Gas Inc. | Greenwood VLG, CO 80111 | Oil & Gas Operator | Aug 2003 |
| 3388 | Leeman Don J | Oklahoma City, OK 73112 | Oil & Gas Operator | Sep 1998 |
| 3389 | Leeman Energy Corporation | Oklahoma City, OK 73118-1802 | Oil & Gas Operator | Mar 2015 |
| 3390 | Lefco Resources LLC | Henryetta, OK 74437 | Gas Operator | Apr 2025 |
| 3391 | Leg Up Operating Company LLC | Tulsa, OK 74135 | Oil Operator | May 2025 |
| 3392 | Legacy - M & K Corporation | Dallas, TX 75231-0969 | Oil & Gas Operator | Jan 2025 |
| 3393 | Legacy Energy Services LLC | Stillwater, OK 74074 | Oil & Gas Operator | Apr 2025 |
| 3394 | Legacy Oklahoma Operators LLC | Shawnee, OK 74804-1447 | Oil & Gas Operator | Apr 2025 |
| 3395 | Legacy Petroleum LLC | Tulsa, OK 74135 | Oil & Gas Operator | Apr 2025 |
| 3396 | Legacy Reserves Operating LP | Denver, CO 80201 | Oil & Gas Operator | Jul 2025 |
| 3397 | Legado Midcon, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | May 2010 |
| 3398 | Legend Energy Corporation | Stillwater, OK 74074-1721 | Oil & Gas Operator | Aug 2022 |
| 3399 | Leigh Operating Co | Dallas, TX 75205 | Oil & Gas Operator | Mar 2008 |
| 3400 | Lema Petroleum Inc | Seminole, OK 74868 | Oil & Gas Operator | Apr 2025 |