| 16601 | Laredo Petroleum - Dallas, Inc. | Tulsa, OK 74119 | Oil & Gas Operator | Nov 2014 |
| 16602 | Laredo Petroleum Inc | Tulsa, OK 74120 | Oil & Gas Operator | Mar 2023 |
| 16603 | Large Operating LLC | Stinnett, TX 79083 | Oil & Gas Operator | Sep 2025 |
| 16604 | Large, William C. & Mary B. | Union Springs, NY 13160 | Gas Operator | Dec 2024 |
| 16605 | Largo Oil Company | Longview, TX 75606 | Oil & Gas Operator | Sep 2025 |
| 16606 | Lariat Energy & Supply Co Inc | Hulbert, OK 74441 | Oil & Gas Operator | Jun 2025 |
| 16607 | Lariat Land & Exploration, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Sep 2025 |
| 16608 | Lariat Petroleum Inc | Tulsa, OK 74119 | Oil & Gas Operator | Sep 2024 |
| 16609 | Lariat Resources, LLC | Fort Worth, TX 76109 | Oil & Gas Operator | May 2022 |
| 16610 | Lario Oil & Gas | | Oil & Gas Operator | Nov 1995 |
| 16611 | Lario Oil & Gas Company | Odessa, TX 79762 | Oil & Gas Operator | Sep 2025 |
| 16612 | Larison Oil Company | Katy, TX 77494 | Oil & Gas Operator | Sep 2025 |
| 16613 | Lark Production, Inc. | | Oil & Gas Operator | Mar 2023 |
| 16614 | Larkin Energy Company Inc | Sasakwa, OK 74867 | Oil & Gas Operator | May 2022 |
| 16615 | Larkin Oil Co | Sasakwa, OK 74867 | Oil & Gas Operator | Aug 2015 |
| 16616 | Larkspur Operating LLC | Oklahoma City, OK 73106 | Oil & Gas Operator | May 2025 |
| 16617 | Larmore Jr James E | Bartlesville, OK 74006-8312 | Oil Operator | Mar 2017 |
| 16618 | Laroca Resources, LTD | Austin, TX 78709 | Oil & Gas Operator | Sep 2025 |
| 16619 | Laroco LLP | Woodsboro, TX 78393 | Oil & Gas Operator | Mar 2008 |
| 16620 | Laron Oil Corporation | Seguin, TX 78155 | Oil & Gas Operator | Jul 1997 |
| 16621 | Larrette Resources | | Oil Operator | Nov 1999 |
| 16622 | Larron Energy Corporation | New Braunfels, TX 78132 | Oil & Gas Operator | Mar 2015 |
| 16623 | Larry A And Patricia D Jeter | Lovington, NM 88260 | Oil & Gas Operator | Apr 2000 |
| 16624 | Larry Brown Dba Brown Oil Company | Ardmore, OK 73401 | Oil Operator | Apr 2015 |
| 16625 | Larry E. Bedrosian | | Oil Operator | Dec 1999 |
| 16626 | Larry H Wright Inc | Naples, FL 34108-2156 | Oil & Gas Operator | Dec 1993 |
| 16627 | Larry Marker Dba Marker Oil | Roswell, NM 88202 | Oil & Gas Operator | Jul 2017 |
| 16628 | Larry Oil, Inc. | Albany, TX 76430 | Oil & Gas Operator | Nov 2001 |
| 16629 | Larry Sherman Oil LLC | Chandler, OK 74834 | Oil & Gas Operator | Jun 2025 |
| 16630 | Larry Wolff Dba Wolff'S Oilfield Service | Cushing, OK 74023-9789 | Oil & Gas Operator | May 2025 |
| 16631 | Larson Buford | | Oil Operator | May 2006 |
| 16632 | Larson Drilling Corp. | Jamestown, NY 14702 | Gas Operator | Dec 2024 |
| 16633 | Larson Exploration Company | Tulsa, OK 74136-4939 | Oil & Gas Operator | Jul 2016 |
| 16634 | Larson Operating | | Oil & Gas Operator | Mar 2001 |
| 16635 | Larson Operating Company | Olmitz, KS 67564-8561 | Oil & Gas Operator | Dec 2019 |
| 16636 | Larson, Perry L Operating Co Inc | Dallas, TX 75382 | Oil & Gas Operator | Feb 2021 |
| 16637 | Las Animas Production Company | Midland, TX 79705 | Oil & Gas Operator | Mar 1995 |
| 16638 | Las Colinas Oil Corp. | Irving, TX 75062 | Oil & Gas Operator | Mar 2015 |
| 16639 | Las Palmas Petroleum Corp. | | Oil Operator | Dec 2010 |
| 16640 | Las Services, Inc. | | Oil & Gas Operator | Oct 1997 |
| 16641 | Lasalle Marine Corporation | Houston, TX 77056 | Oil Operator | Aug 2003 |
| 16642 | Lasater & Co, Inc. | Spearman, TX 79081 | Oil & Gas Operator | Sep 2025 |
| 16643 | Lasco Production Co | | Oil & Gas Operator | Dec 1999 |
| 16644 | Laser Gas Company I, LLC | | Oil Operator | Aug 2007 |
| 16645 | Lashley Oil Company Inc | Walters, OK 73572 | Oil Operator | Dec 2014 |
| 16646 | Lasmo Energy Cor | | Oil Operator | Feb 1990 |
| 16647 | Lasmo Energy Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Jan 2024 |
| 16648 | Lassetter Petrol | | Oil Operator | Oct 1986 |
| 16649 | Lasso Energy LLC | Chase, KS 67524 | Oil & Gas Operator | Apr 2025 |
| 16650 | Lasso Oil & Gas LLC | | Oil & Gas Operator | Jul 2022 |
| 16651 | Last Chance Operating LLC | Wortham, TX 76693 | Oil Operator | Sep 2025 |
| 16652 | Last Ditch Petroleum LLC | Edmonton, KY 42129 | Oil Operator | Dec 2023 |
| 16653 | Last Dollar LLC | Big Lake, TX 76932 | Oil & Gas Operator | Sep 2025 |
| 16654 | Last Mile Production, LLC | Austin, TX 78746 | Oil & Gas Operator | Sep 2025 |
| 16655 | Last Run, LLC | Rillito, AZ 85246 | Oil & Gas Operator | May 2020 |
| 16656 | Laster Welding And Well Serv, Inc. | | Gas Operator | Jul 2020 |
| 16657 | Lastrada Oil And Gas LTD | | Oil & Gas Operator | May 1992 |
| 16658 | Latex Petroleum Corp. | Houston, TX 77090 | Oil & Gas Operator | Aug 2012 |
| 16659 | Latexo Oil & Gas Co. | | Oil Operator | Sep 1986 |
| 16660 | Latexo Resources, Inc. | Austin, TX 78701 | Oil & Gas Operator | Feb 1997 |
| 16661 | Latham & Bonner | | Oil Operator | Aug 1987 |
| 16662 | Latham Exploration Company Inc | | Oil & Gas Operator | Aug 1992 |
| 16663 | Latham Production & Service Co | | Oil Operator | Jul 1989 |
| 16664 | Latham Roger P C | Dallas, TX 75244 | Oil Operator | Apr 2015 |
| 16665 | Latham, Bonner & Hall | | Oil Operator | Mar 1988 |
| 16666 | Latham, Richard K | Lewisburg, KY 42256 | Oil Operator | Dec 2022 |
| 16667 | Latigo (Texas), LLC | Tulsa, OK 74119 | Oil & Gas Operator | Sep 2025 |
| 16668 | Latigo Drilling Corporation | Duncan, OK 73533 | Oil & Gas Operator | May 2025 |
| 16669 | Latigo Oil & Gas, Inc. | Woodward, OK 73801 | Oil & Gas Operator | Jun 2025 |
| 16670 | Latigo Petroleum Texas, LP | Houston, TX 77002 | Oil & Gas Operator | Feb 2009 |
| 16671 | Latigo Petroleum, Inc. | Tulsa, OK 74119 | Oil & Gas Operator | May 2025 |
| 16672 | Latigo Petroleum, LLC | Pampa, TX 79066 | Oil & Gas Operator | Sep 2025 |
| 16673 | Latimer, D. Gail Enterprises,Inc | Snyder, TX 79550 | Oil & Gas Operator | Jul 2004 |
| 16674 | Lauber Floyd | Dayton, OH 45415 | Oil & Gas Operator | Dec 1997 |
| 16675 | Lauck & Associates | Walnut Creek, CA 91789 | Oil & Gas Operator | Jun 2025 |
| 16676 | Lauck D R Oil Co | | Oil & Gas Operator | Oct 1995 |
| 16677 | Laughlin Jack D | Cushing, OK 74023 | Oil & Gas Operator | Sep 2016 |
| 16678 | Laughlin, W. M. Estate | Premont, TX 78375 | Oil & Gas Operator | Jun 2003 |
| 16679 | Laurco Energies,Inc | | Oil & Gas Operator | May 2025 |
| 16680 | Laurel Fuel Company | Jackson, MS 39206 | Oil & Gas Operator | Dec 1996 |
| 16681 | Laurel Mountain Production | Pittsburgh, PA 15241-1633 | Oil & Gas Operator | Jun 2025 |
| 16682 | Laurel Operating Company, Inc. | Stillwater, OK 74074-3025 | Oil & Gas Operator | May 2025 |
| 16683 | Laurence C Kelly | Farmington, NM 87402 | Gas Operator | Dec 2002 |
| 16684 | Lavaca Canyon Petroleum LLC | Houston, TX 77094 | Oil & Gas Operator | Sep 2025 |
| 16685 | Lavaca River Operating Co., LLC | The Woodlands, TX 77381 | Oil & Gas Operator | Sep 2025 |
| 16686 | Lavanco Energy, Inc. | San Angelo, TX 76906 | Oil & Gas Operator | Feb 2006 |
| 16687 | Lavanco Energy, LTD. | San Angelo, TX 76906 | Oil & Gas Operator | Feb 2024 |
| 16688 | Laverty, Thomas R | | Oil & Gas Operator | Dec 2023 |
| 16689 | Lavino Oil And Gas Company | | Oil & Gas Operator | Aug 1989 |
| 16690 | Law E Edward | Newkirk, OK 74647-2056 | Oil Operator | May 2025 |
| 16691 | Law Production, Inc. | McPherson, KS 67460 | Oil Operator | Nov 2007 |
| 16692 | Lawbanco Drillin | | Oil Operator | Feb 1995 |
| 16693 | Lawbanco Drilling, Inc. | Natoma, KS 67651 | Oil Operator | May 1998 |
| 16694 | Lawbar Petroleum, Inc. | Tuleta, TX 78162 | Oil & Gas Operator | Aug 2003 |
| 16695 | Lawco Exploration Inc | Bentonville, AR 72712 | Oil & Gas Operator | Aug 2024 |
| 16696 | Lawco Holdings LLC | Bentonville, AR 72712 | Oil Operator | May 2025 |
| 16697 | Lawco Osage Operating, LLC | Bentonville, AR 72712 | Oil & Gas Operator | Sep 2025 |
| 16698 | Lawlis Oil Company | Hamlin, TX 79520 | Oil & Gas Operator | Sep 2025 |
| 16699 | Lawrence & Bush | Lawton, OK 73507 | Oil Operator | Dec 1995 |
| 16700 | Lawrence & Bush, Inc. | Pampa, TX 79065 | Oil Operator | Oct 1998 |