| 16601 | Landmark Venture Group, Inc. | | Oil Operator | Dec 2008 |
| 16602 | Landmaster Partners, Inc. | Abilene, TX 79601 | Oil & Gas Operator | Jun 2025 |
| 16603 | Landmen Of Texas | Hondo, TX 78861 | Oil Operator | Feb 2007 |
| 16604 | Landmen Of Texas, Inc. | Hondo, TX 78861 | Oil Operator | Dec 2016 |
| 16605 | Landor Oil Co. | San Marcos, TX 78666 | Oil Operator | Jun 2025 |
| 16606 | Landowner | Honolulu, HI | Oil & Gas Operator | Dec 2008 |
| 16607 | Landprovest Inc | Cambridge, OH 43725-858-858 | Oil & Gas Operator | Dec 1993 |
| 16608 | Landreth, Robert E. | Midland, TX 79701 | Oil & Gas Operator | Jun 2025 |
| 16609 | Landrick O & G Operating, LLC | Midland, TX 79705 | Oil & Gas Operator | Jun 2025 |
| 16610 | Landrum Petroleum Co., Inc. | Burkburnett, TX 76354 | Oil Operator | Mar 2008 |
| 16611 | Landrum West, Inc. | Burkburnett, TX 76354 | Oil & Gas Operator | Dec 1997 |
| 16612 | Landrum, W. A. | Byers, TX 76357 | Oil & Gas Operator | Apr 2002 |
| 16613 | Lane Oil Company, LLC | Northern Cambria, PA 15714 | Oil Operator | Dec 2023 |
| 16614 | Lane Operating Company | Wichita Falls, TX 76301 | Oil & Gas Operator | Jun 2025 |
| 16615 | Lane, Lloyd L. | Buffalo, TX 75831 | Oil Operator | Jun 2025 |
| 16616 | Laneer Resources Company | Abilene, TX 79608 | Oil & Gas Operator | Jun 2025 |
| 16617 | Lanexco, Inc. | Sealy, TX 77474 | Oil & Gas Operator | Jun 2025 |
| 16618 | Lanford Drilling Co., Inc. | | Oil Operator | Jun 1996 |
| 16619 | Lang Herman Oil | | Oil & Gas Operator | Dec 1996 |
| 16620 | Lang Larry D | Beverly, OH 45715 | Oil & Gas Operator | Dec 2024 |
| 16621 | Lang, Herman - Marital Trust | Garden City, KS 67846 | Oil & Gas Operator | Feb 2025 |
| 16622 | Lang, Kenneth R. | Garden City, KS 67846 | Oil & Gas Operator | Feb 2025 |
| 16623 | Langasco Energy Corp | Alliance, OH 44601 | Oil & Gas Operator | Dec 1987 |
| 16624 | Langford & Brigham Operating LLC | Austin, TX 78730 | Oil & Gas Operator | Jun 2025 |
| 16625 | Langford Production Company, LLC | Haskell, TX 79521 | Oil & Gas Operator | Jun 2025 |
| 16626 | Langford, G. E. | Abilene, TX 79604 | Oil & Gas Operator | Jan 2002 |
| 16627 | Langford, R. C. Operating Co. | Rule, TX 79547 | Oil & Gas Operator | Mar 1994 |
| 16628 | Langham Petroleum Expl. Corp. | Houston, TX 77056 | Oil & Gas Operator | Dec 2009 |
| 16629 | Langley Energy | Euless, TX 76040 | Gas Operator | Jan 2016 |
| 16630 | Langley Harold | Graham, OK 73437 | Oil Operator | Jan 2025 |
| 16631 | Langley, James Operating Company, Inc | Smackover, AR 71762 | Oil & Gas Operator | Dec 2024 |
| 16632 | Langley, Jerry Oil Company LLC | Smackover, AR 71762 | Oil Operator | Jan 2025 |
| 16633 | Langston Oil & Gas LLC | Wichita, KS 67202 | Oil Operator | Feb 2025 |
| 16634 | Lankford & Nance | | Gas Operator | Dec 2010 |
| 16635 | Lankford Oil Co. | Weatherford, TX 76086 | Oil & Gas Operator | Jul 1999 |
| 16636 | Lankford, Dan L. | Graham, TX 76450 | Oil & Gas Operator | Jun 2025 |
| 16637 | Lanmarc Resources | | Oil Operator | Dec 2003 |
| 16638 | Lanoco, Inc. | | Oil & Gas Operator | Sep 2002 |
| 16639 | Lansden Operating Co LLC | Norman, OK 73070 | Oil & Gas Operator | Dec 1997 |
| 16640 | Lansing Energy C | | Oil Operator | Jun 2006 |
| 16641 | Lansing Energy Operations | Wichita, KS 67202 | Oil Operator | Apr 2010 |
| 16642 | Lapco Oil & Gas Company | Houston, TX 77069 | Oil & Gas Operator | Oct 2015 |
| 16643 | Lapetco Inc | Plano, TX 75093 | Oil & Gas Operator | Aug 2024 |
| 16644 | Lapis Operating, Inc. | Houston, TX 77042 | Oil & Gas Operator | Jul 2015 |
| 16645 | Lappin Oil LLC | Douglas, WY 82633 | Oil & Gas Operator | May 2025 |
| 16646 | Laquey, E. C. | Refugio, TX 78377 | Oil & Gas Operator | Aug 2003 |
| 16647 | Lar-Mie Petroleum Inc | Tulsa, OK 74136 | Oil & Gas Operator | Aug 1998 |
| 16648 | Larae Operations | Luling, TX 78648 | Oil Operator | Jun 2025 |
| 16649 | Laramie Energy II LLC | Denver, CO 80202 | Oil & Gas Operator | Sep 2015 |
| 16650 | Laramie Energy LLC | | Oil & Gas Operator | Aug 2013 |
| 16651 | Laran Operating LLC | Dover, OK 73734-0057 | Oil & Gas Operator | Mar 2015 |
| 16652 | Larance Engineering Company | Wichita Falls, TX 76301 | Oil & Gas Operator | Jan 1996 |
| 16653 | Larch Oil & Gas Corporation | Cross Lanes, WV 25313 | Oil & Gas Operator | Dec 2021 |
| 16654 | Larco Drilling & Exploration Corp. | | Oil & Gas Operator | Dec 1999 |
| 16655 | Larcom Mike | | Oil Operator | Feb 1987 |
| 16656 | Lardo, Anthony P. Jr. | Lakeview, NY 14085 | Gas Operator | Dec 2023 |
| 16657 | Laredo Energy | Houston, TX 77002 | Oil & Gas Operator | Jun 2016 |
| 16658 | Laredo Energy Operating, LLC | Houston, TX 77024 | Oil & Gas Operator | Nov 2022 |
| 16659 | Laredo Energy, LP | Houston, TX 77040 | Oil & Gas Operator | Oct 2003 |
| 16660 | Laredo Petroleum - Dallas, Inc. | Tulsa, OK 74119 | Oil & Gas Operator | Nov 2014 |
| 16661 | Laredo Petroleum Inc | Tulsa, OK 74120 | Oil & Gas Operator | Mar 2023 |
| 16662 | Large Operating LLC | Stinnett, TX 79083 | Oil & Gas Operator | Jun 2025 |
| 16663 | Large, William C. & Mary B. | Union Springs, NY 13160 | Gas Operator | Dec 2023 |
| 16664 | Largo Oil Company | Longview, TX 75606 | Oil & Gas Operator | Jun 2025 |
| 16665 | Lariat Energy & Supply Co Inc | Hulbert, OK 74441 | Oil & Gas Operator | Mar 2025 |
| 16666 | Lariat Land & Exploration, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Jun 2025 |
| 16667 | Lariat Petroleum Inc | Tulsa, OK 74119 | Oil & Gas Operator | Sep 2024 |
| 16668 | Lariat Resources, LLC | Fort Worth, TX 76109 | Oil & Gas Operator | May 2022 |
| 16669 | Lario Oil & Gas | | Oil & Gas Operator | Nov 1995 |
| 16670 | Lario Oil & Gas Company | Odessa, TX 79762 | Oil & Gas Operator | Jun 2025 |
| 16671 | Larison Oil Company | Katy, TX 77494 | Oil & Gas Operator | Jun 2025 |
| 16672 | Lark Production, Inc. | | Oil & Gas Operator | Mar 2023 |
| 16673 | Larkin Energy Company Inc | Sasakwa, OK 74867 | Oil & Gas Operator | May 2022 |
| 16674 | Larkin Oil Co | Sasakwa, OK 74867 | Oil & Gas Operator | Aug 2015 |
| 16675 | Larkspur Operating LLC | Oklahoma City, OK 73034 | Oil & Gas Operator | Mar 2025 |
| 16676 | Larmore Jr James E | Bartlesville, OK 74006-8312 | Oil Operator | Mar 2017 |
| 16677 | Laroca Resources, LTD | Austin, TX 78709 | Oil & Gas Operator | Jun 2025 |
| 16678 | Laroco LLP | Woodsboro, TX 78393 | Oil & Gas Operator | Mar 2008 |
| 16679 | Laron Oil Corporation | Seguin, TX 78155 | Oil & Gas Operator | Jul 1997 |
| 16680 | Larrette Resources | | Oil Operator | Nov 1999 |
| 16681 | Larron Energy Corporation | New Braunfels, TX 78132 | Oil & Gas Operator | Mar 2015 |
| 16682 | Larry A And Patricia D Jeter | Lovington, NM 88260 | Oil & Gas Operator | Apr 2000 |
| 16683 | Larry Brown Dba Brown Oil Company | Ardmore, OK 73401 | Oil Operator | Apr 2015 |
| 16684 | Larry E. Bedrosian | | Oil Operator | Dec 1999 |
| 16685 | Larry H Wright Inc | Naples, FL 34108-2156-2156 | Oil & Gas Operator | Dec 1993 |
| 16686 | Larry Marker Dba Marker Oil | Roswell, NM 88202 | Oil & Gas Operator | Jul 2017 |
| 16687 | Larry Oil, Inc. | Albany, TX 76430 | Oil & Gas Operator | Nov 2001 |
| 16688 | Larry Sherman Oil LLC | Chandler, OK 74834 | Oil & Gas Operator | Jan 2025 |
| 16689 | Larry Wolff Dba Wolff'S Oilfield Service | Cushing, OK 74023-9789 | Oil & Gas Operator | Feb 2025 |
| 16690 | Larson Buford | | Oil Operator | May 2006 |
| 16691 | Larson Drilling Corp. | Jamestown, NY 14702 | Gas Operator | Dec 2023 |
| 16692 | Larson Exploration Company | Tulsa, OK 74136-4939 | Oil & Gas Operator | Jul 2016 |
| 16693 | Larson Operating | | Oil & Gas Operator | Mar 2001 |
| 16694 | Larson Operating Company | Olmitz, KS 67564-8561 | Oil & Gas Operator | Dec 2019 |
| 16695 | Larson, Perry L Operating Co Inc | Dallas, TX 75382 | Oil & Gas Operator | Feb 2021 |
| 16696 | Las Animas Production Company | Midland, TX 79705 | Oil & Gas Operator | Mar 1995 |
| 16697 | Las Colinas Oil Corp. | Irving, TX 75062 | Oil & Gas Operator | Mar 2015 |
| 16698 | Las Palmas Petroleum Corp. | | Oil Operator | Dec 2010 |
| 16699 | Las Services, Inc. | | Oil & Gas Operator | Oct 1997 |
| 16700 | Lasalle Marine Corporation | Houston, TX 77056 | Oil Operator | Aug 2003 |