| 16301 | Laredo Petroleum - Dallas, Inc. | Tulsa, OK 74119 | Oil & Gas Operator | Nov 2014 |
| 16302 | Laredo Petroleum, Inc. | Tulsa, OK 74120 | Oil & Gas Operator | Mar 2023 |
| 16303 | Large Operating LLC | Stinnett, TX 79083 | Oil & Gas Operator | Sep 2026 |
| 16304 | Largo Oil Company | Longview, TX 75606 | Oil & Gas Operator | Sep 2026 |
| 16305 | Lariat Energy & Supply Co Inc | Hulbert, OK 74441 | Oil & Gas Operator | Feb 2026 |
| 16306 | Lariat Land & Exploration, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Sep 2026 |
| 16307 | Lariat Petroleum Inc | Tulsa, OK 74119 | Oil & Gas Operator | Sep 2024 |
| 16308 | Lariat Resources, LLC | Fort Worth, TX 76132 | Oil & Gas Operator | May 2022 |
| 16309 | Lario Oil & Gas | | Oil & Gas Operator | Nov 1995 |
| 16310 | Lario Oil & Gas Company | Denver, CO 80206 | Oil & Gas Operator | Sep 2026 |
| 16311 | Larison Oil Company | Katy, TX 77494 | Oil & Gas Operator | Sep 2026 |
| 16312 | Lark Production, Inc. | | Oil & Gas Operator | Mar 2023 |
| 16313 | Larkin Energy Company Inc | Sasakwa, OK 74867 | Oil & Gas Operator | May 2022 |
| 16314 | Larkin Oil Co | Sasakwa, OK 74867 | Oil & Gas Operator | Aug 2015 |
| 16315 | Larkspur Operating LLC | Oklahoma City, OK 73106 | Oil & Gas Operator | May 2026 |
| 16316 | Larmore Jr James E | Bartlesville, OK 74006-8312 | Oil Operator | Mar 2017 |
| 16317 | Laroca Resources, LTD | Austin, TX 78709 | Oil & Gas Operator | Sep 2026 |
| 16318 | Laroco LLP | Woodsboro, TX 78393 | Oil & Gas Operator | Mar 2008 |
| 16319 | Laron Oil Corporation | Seguin, TX 78155 | Oil & Gas Operator | Jul 1997 |
| 16320 | Larrette Resources | | Oil Operator | Nov 1999 |
| 16321 | Larron Energy Corporation | New Braunfels, TX 78132 | Oil & Gas Operator | Mar 2015 |
| 16322 | Larry A And Patricia D Jeter | Lovington, NM 88260 | Oil & Gas Operator | Apr 2000 |
| 16323 | Larry Brown Dba Brown Oil Company | Ardmore, OK 73401 | Oil Operator | Apr 2015 |
| 16324 | Larry E. Bedrosian | | Oil Operator | Dec 1999 |
| 16325 | Larry H Wright Inc | Naples, FL 34108-2156 | Oil & Gas Operator | Dec 1993 |
| 16326 | Larry Marker Dba Marker Oil | Roswell, NM 88202 | Oil & Gas Operator | Jul 2017 |
| 16327 | Larry Oil, Inc. | Albany, TX 76430 | Oil & Gas Operator | Nov 2001 |
| 16328 | Larry Sherman Oil LLC | Chandler, OK 74834 | Oil & Gas Operator | Jun 2026 |
| 16329 | Larry Wolff Dba Wolff'S Oilfield Service | Cushing, OK 74023-9789 | Oil & Gas Operator | May 2026 |
| 16330 | Larson Buford | | Oil Operator | May 2006 |
| 16331 | Larson Drilling Corp. | Jamestown, NY 14702 | Gas Operator | Dec 2025 |
| 16332 | Larson Exploration Company | Tulsa, OK 74136-4939 | Oil & Gas Operator | Jul 2016 |
| 16333 | Larson Operating | | Oil & Gas Operator | Mar 2001 |
| 16334 | Larson Operating Company | Olmitz, KS 67564-8561 | Oil & Gas Operator | Dec 2019 |
| 16335 | Larson, Perry L Operating Co Inc | Dallas, TX 75382 | Oil & Gas Operator | Feb 2021 |
| 16336 | Las Animas Production Company | Midland, TX 79705 | Oil & Gas Operator | Mar 1995 |
| 16337 | Las Colinas Oil Corp. | Irving, TX 75062 | Oil & Gas Operator | Mar 2015 |
| 16338 | Las Palmas Petroleum Corp. | | Oil Operator | Dec 2010 |
| 16339 | Las Services, Inc. | | Oil & Gas Operator | Oct 1997 |
| 16340 | Lasalle Marine Corporation | Houston, TX 77056 | Oil Operator | Aug 2003 |
| 16341 | Lasater & Co, Inc. | Spearman, TX 79081 | Oil & Gas Operator | Sep 2026 |
| 16342 | Lasco Production Co | | Oil & Gas Operator | Dec 1999 |
| 16343 | Laser Gas Company I, LLC | | Oil Operator | Aug 2007 |
| 16344 | Lashley Oil Company Inc | Walters, OK 73572 | Oil Operator | Dec 2014 |
| 16345 | Lasmo Energy Cor | | Oil Operator | Feb 1990 |
| 16346 | Lasmo Energy Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Jan 2024 |
| 16347 | Lassetter Petrol | | Oil Operator | Oct 1986 |
| 16348 | Lasso Energy LLC | Chase, KS 67524 | Oil & Gas Operator | Apr 2026 |
| 16349 | Lasso Oil & Gas LLC | Dallas, TX 75360 | Oil & Gas Operator | Jul 2022 |
| 16350 | Last Ditch Petroleum LLC | Edmonton, KY 42129 | Oil Operator | Dec 2023 |
| 16351 | Last Dollar LLC | Big Lake, TX 76932 | Oil & Gas Operator | Sep 2026 |
| 16352 | Last Mile Production, LLC | Southlake, TX 76092 | Oil & Gas Operator | Sep 2026 |
| 16353 | Last Run, LLC | Rillito, AZ 85246 | Oil & Gas Operator | May 2020 |
| 16354 | Laster Welding And Well Serv, Inc. | | Gas Operator | Jul 2020 |
| 16355 | Lastrada Oil And Gas LTD | | Oil & Gas Operator | May 1992 |
| 16356 | Latex Petroleum Corp. | Houston, TX 77090 | Oil & Gas Operator | Aug 2012 |
| 16357 | Latexo Oil & Gas Co. | | Oil Operator | Sep 1986 |
| 16358 | Latexo Resources, Inc. | Austin, TX 78701 | Oil & Gas Operator | Feb 1997 |
| 16359 | Latham & Bonner | | Oil Operator | Aug 1987 |
| 16360 | Latham Exploration Company Inc | | Oil & Gas Operator | Aug 1992 |
| 16361 | Latham Production & Service Co | | Oil Operator | Jul 1989 |
| 16362 | Latham Roger P C | Dallas, TX 75244 | Oil Operator | Apr 2015 |
| 16363 | Latham, Bonner & Hall | | Oil Operator | Mar 1988 |
| 16364 | Latham, Richard K | Lewisburg, KY 42256 | Oil Operator | Dec 2022 |
| 16365 | Latigo (Texas), LLC | Tulsa, OK 74119 | Oil & Gas Operator | Sep 2026 |
| 16366 | Latigo Drilling Corporation | Duncan, OK 73533 | Oil & Gas Operator | May 2026 |
| 16367 | Latigo Oil & Gas, Inc. | Woodward, OK 73801 | Oil & Gas Operator | Jun 2026 |
| 16368 | Latigo Petroleum Texas, LP | Houston, TX 77002 | Oil & Gas Operator | Feb 2009 |
| 16369 | Latigo Petroleum, Inc. | Tulsa, OK 74119 | Oil & Gas Operator | Apr 2026 |
| 16370 | Latigo Petroleum, LLC | Pampa, TX 79066 | Oil & Gas Operator | Sep 2026 |
| 16371 | Latimer, D. Gail Enterprises,Inc | Snyder, TX 79550 | Oil & Gas Operator | Jul 2004 |
| 16372 | Lauber Floyd | Dayton, OH 45415 | Oil & Gas Operator | Dec 1997 |
| 16373 | Lauck & Associates | Walnut Creek, CA 91789 | Oil & Gas Operator | Jun 2026 |
| 16374 | Lauck D R Oil Co | | Oil & Gas Operator | Oct 1995 |
| 16375 | Laughlin Jack D | Cushing, OK 74023 | Oil & Gas Operator | Sep 2016 |
| 16376 | Laughlin, W. M. Estate | Premont, TX 78375 | Oil & Gas Operator | Jun 2003 |
| 16377 | Laurco Energies,Inc | | Oil & Gas Operator | May 2025 |
| 16378 | Laurel Fuel Company | Jackson, MS 39206 | Oil & Gas Operator | Dec 1996 |
| 16379 | Laurel Mountain Production | | Oil & Gas Operator | May 2026 |
| 16380 | Laurel Operating Company | Stillwater, OK 74074-3025 | Oil & Gas Operator | May 2026 |
| 16381 | Lavaca Canyon Petroleum LLC | Houston, TX 77060 | Oil & Gas Operator | Sep 2026 |
| 16382 | Lavaca River Operating Co., LLC | The Woodlands, TX 77381 | Oil & Gas Operator | Sep 2026 |
| 16383 | Lavanco Energy, Inc. | San Angelo, TX 76906 | Oil & Gas Operator | Feb 2006 |
| 16384 | Lavanco Energy, LTD. | San Angelo, TX 76906 | Oil & Gas Operator | Feb 2024 |
| 16385 | Laverty, Thomas R | | Oil & Gas Operator | Dec 2023 |
| 16386 | Lavino Oil And Gas Company | | Oil & Gas Operator | Aug 1989 |
| 16387 | Law E Edward | Newkirk, OK 74647-2056 | Oil Operator | Apr 2026 |
| 16388 | Law Production, Inc. | McPherson, KS 67460 | Oil Operator | Nov 2007 |
| 16389 | Lawbanco Drillin | | Oil Operator | Feb 1995 |
| 16390 | Lawbanco Drilling, Inc. | Natoma, KS 67651 | Oil Operator | May 1998 |
| 16391 | Lawbar Petroleum, Inc. | Tuleta, TX 78162 | Oil & Gas Operator | Aug 2003 |
| 16392 | Lawco Exploration Inc | Bentonville, AR 72712 | Oil & Gas Operator | Aug 2024 |
| 16393 | Lawco Holdings LLC | Bentonville, AR 72712 | Oil Operator | Apr 2026 |
| 16394 | Lawco Osage Operating, LLC | Bentonville, AR 72712 | Oil & Gas Operator | Sep 2026 |
| 16395 | Lawlis Oil Company | Hamlin, TX 79520 | Oil & Gas Operator | Sep 2026 |
| 16396 | Lawrence & Bush | Lawton, OK 73507 | Oil Operator | Dec 1995 |
| 16397 | Lawrence & Bush, Inc. | Pampa, TX 79065 | Oil Operator | Oct 1998 |
| 16398 | Lawrence County Gas LLC | Salyersville, KY 41465 | Oil & Gas Operator | Dec 2024 |
| 16399 | Lawrence Energy Company | Abilene, TX 79602 | Oil & Gas Operator | Sep 2026 |
| 16400 | Lawrence Exploration Inc | | Oil & Gas Operator | Sep 2004 |