| 17601 | London William W | Oklahoma City, OK 73116 | Oil & Gas Operator | Nov 2015 |
| 17602 | London William W Inc | Oklahoma City, OK 73116-5116 | Oil & Gas Operator | Apr 2016 |
| 17603 | Lone Eagle LLC | | Oil & Gas Operator | Dec 2003 |
| 17604 | Lone Jack Oil Co. | | Oil Operator | Dec 2024 |
| 17605 | Lone Mountain Prod | | Oil Operator | Dec 2018 |
| 17606 | Lone Mountain Production Company | | Oil & Gas Operator | Jan 2016 |
| 17607 | Lone MTN Production Co | Billings, MT 59108-0965 | Oil & Gas Operator | Jul 2019 |
| 17608 | Lone Oak Energy Inc | Kyle, TX 78640 | Oil & Gas Operator | Apr 2025 |
| 17609 | Lone Pine Operating Company, Inc. | Salem, WV 26426 | Oil & Gas Operator | Dec 2021 |
| 17610 | Lone Pine Production Assoc.,Inc. | Houston, TX 77056 | Oil & Gas Operator | Apr 1993 |
| 17611 | Lone Star Gas Co. | Dallas, TX 75201 | Oil & Gas Operator | Jul 1999 |
| 17612 | Lone Star Interests, Inc. | Chanute, KS 66720 | Oil Operator | Sep 2001 |
| 17613 | Lone Star Land And Energy II LLC | Dallas, TX 75214 | Oil & Gas Operator | Jan 2020 |
| 17614 | Lone Star Oil & Gas | Midland, TX 79702 | Oil & Gas Operator | Apr 2025 |
| 17615 | Lone Star Oil & Gas, Inc | Greenville, KY 42345 | Oil & Gas Operator | Dec 2023 |
| 17616 | Lone Star Oil Co. | Jacksboro, TX 76458 | Oil & Gas Operator | Dec 2024 |
| 17617 | Lone Star Operating Company | Pearsall, TX 78061 | Oil & Gas Operator | Apr 2025 |
| 17618 | Lone Star Operations LLC | Lubbock, TX 79401 | Oil & Gas Operator | Apr 2025 |
| 17619 | Lone Star Pipeline Company | Dallas, TX 75201 | Oil & Gas Operator | Jul 1999 |
| 17620 | Lone Star Production | Lawn, TX 79530 | Oil & Gas Operator | Apr 2025 |
| 17621 | Lone Star Resources Company | Keyes, OK 73947 | Oil & Gas Operator | Mar 2015 |
| 17622 | Lone Star Services | Pecos, TX 79772 | Oil & Gas Operator | Apr 2025 |
| 17623 | Lone Tree Oil & Gas LLC | Greenwood VLG, CO 80111 | Oil & Gas Operator | Apr 2025 |
| 17624 | Lone Wolf Oil & Gas Co., LLC | Moline, KS 67353 | Oil & Gas Operator | Dec 2024 |
| 17625 | Lone Wolf Oil LLC | Wellsville, KS 66092 | Oil Operator | Dec 2009 |
| 17626 | Lone Wolf Operating Company | Denver, CO 80202 | Oil & Gas Operator | Nov 2005 |
| 17627 | Lone Wolf Operating Company, LP | Haxtun, CO 80731 | Oil & Gas Operator | Sep 2009 |
| 17628 | Lone Wolf Operating, LLC | Billings, MT 59108 | Oil & Gas Operator | Nov 2024 |
| 17629 | Lonesome B, LLC | Monahans, TX 79756 | Oil & Gas Operator | Apr 2025 |
| 17630 | Lonestar Foundation Inc. | | Oil Operator | Dec 2008 |
| 17631 | Lonestar Operating, LLC | Houston, TX 77084 | Oil & Gas Operator | Nov 2022 |
| 17632 | Lonestar Petroleum Services, LLC | Artesia, NM 88210 | Oil Operator | Feb 2025 |
| 17633 | Lonestar Production Services | Graham, TX 76450 | Oil Operator | Apr 2025 |
| 17634 | Long Acres Prod. Co., Inc. | | Oil & Gas Operator | Aug 1986 |
| 17635 | Long And Ware Oil, A General Partnership | Pawhuska, OK 74056 | Oil Operator | Jan 2021 |
| 17636 | Long Beach Oil Development Co | Glendale, CA 91203 | Oil & Gas Operator | Jun 2004 |
| 17637 | Long Branch Production, LLC | Buna, TX 77612 | Gas Operator | Sep 2024 |
| 17638 | Long Bros. Oil Co. | | Oil Operator | Jul 2015 |
| 17639 | Long Drilling Company, LLC | Hamilton, KS 66853 | Oil Operator | Dec 2024 |
| 17640 | Long Engineering Company Inc | Oklahoma City, OK 73112-7769 | Oil Operator | Jun 2008 |
| 17641 | Long George L | San Antonio, TX 78209 | Oil & Gas Operator | Feb 1996 |
| 17642 | Long Jack Senior | | Oil Operator | Jan 2004 |
| 17643 | Long John P Jr | Pawhuska, OK 74056 | Oil & Gas Operator | Jan 2025 |
| 17644 | Long Oil & Natural Gas Corp. | | Oil & Gas Operator | Feb 1996 |
| 17645 | Long Oil And Gas Expl., LTD | | Oil & Gas Operator | Apr 1988 |
| 17646 | Long Operating, L.L.C. | Shreveport, LA 71166 | Oil & Gas Operator | Jun 2006 |
| 17647 | Long Petroleum, Inc. | Shreveport, LA 71166 | Oil & Gas Operator | Jun 2020 |
| 17648 | Long Phillip C | Muskogee, OK 74403 | Oil & Gas Operator | May 2013 |
| 17649 | Long Production LLC | Claremore, OK 74017-2808 | Oil & Gas Operator | Oct 2019 |
| 17650 | Long Resources Inc | San Antonio, TX 78230-2890 | Oil & Gas Operator | Feb 2025 |
| 17651 | Long Royalty Company | Yukon, OK 73085 | Oil & Gas Operator | Jan 2004 |
| 17652 | Long Shot Oil Co. | | Oil Operator | Aug 1997 |
| 17653 | Long SR John | Avant, OK 74001 | Oil Operator | Jan 2025 |
| 17654 | Long Trust The | Kilgore, TX 75663 | Oil & Gas Operator | Aug 2008 |
| 17655 | Long Trusts, The | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2025 |
| 17656 | Long, Edgar E. | Windthorst, TX 76389 | Oil & Gas Operator | Oct 2011 |
| 17657 | Long, Edwin A. And Glenda | Hamilton, KS 66853 | Oil Operator | Aug 2000 |
| 17658 | Long, James A | | Oil Operator | Aug 2000 |
| 17659 | Long, Larry T. | Kilgore, TX 75663 | Oil & Gas Operator | Jun 2017 |
| 17660 | Long, Lewis C., A General Partnership | Hamilton, KS 66853 | Oil Operator | Dec 2019 |
| 17661 | Long, Marshall | Chase, KS 67524 | Oil Operator | Mar 1986 |
| 17662 | Long-Tex Exploration, Inc. | Kilgore, TX 75662 | Oil & Gas Operator | Apr 2025 |
| 17663 | Longacre Oil & Gas | Enid, OK 73702 | Oil & Gas Operator | Mar 2013 |
| 17664 | Longacre-Moore Oil Co | | Oil & Gas Operator | Jun 1996 |
| 17665 | Longberry Energy Inc | Keota, OK 74941 | Gas Operator | Jan 2025 |
| 17666 | Longbotham Energy, LLC | Jackson, TN 38308 | Oil Operator | Apr 2025 |
| 17667 | Longbow LLC | | Oil & Gas Operator | Dec 2024 |
| 17668 | Longbranch Oil Company | Oklahoma City, OK 73154-0735 | Oil & Gas Operator | Mar 2018 |
| 17669 | Longfellow Energy, LP | Dallas, TX 75225 | Oil & Gas Operator | Apr 2025 |
| 17670 | Longhorn Crude, LLC | Jetmore, KS 67854 | Oil Operator | Dec 2024 |
| 17671 | Longhorn Energy | | Oil & Gas Operator | Jun 1991 |
| 17672 | Longhorn Mineral Corporation | Bellaire, TX 77401 | Oil & Gas Operator | May 2018 |
| 17673 | Longhorn Oil & Gas | | Oil Operator | Dec 2024 |
| 17674 | Longhorn Oil & Gas Company | | Oil & Gas Operator | Sep 1982 |
| 17675 | Longhorn Oil Properties, Inc. | Pottsboro, TX 75076 | Oil & Gas Operator | Apr 2025 |
| 17676 | Longhorn Propert | | Oil Operator | Feb 1989 |
| 17677 | Longhorn Service & Drilling Co. | Kermit, TX 79745 | Oil & Gas Operator | Jun 2019 |
| 17678 | Longhurst Oil & Gas Inc | | Oil & Gas Operator | Nov 2013 |
| 17679 | Longleaf Energy Group, Inc. | Brewton, AL 36426 | Oil & Gas Operator | Feb 2004 |
| 17680 | Longleaf Gas & Oil | | Oil Operator | May 2010 |
| 17681 | Longs Peak Resources LLC | Houston, TX 77019 | Oil & Gas Operator | Jan 2025 |
| 17682 | Longshot Energy LLC | League City, TX 77573 | Oil Operator | Apr 2025 |
| 17683 | Longton Explorat | | Oil & Gas Operator | Jul 1993 |
| 17684 | Longton Explorations | | Oil & Gas Operator | Dec 2024 |
| 17685 | Longview Production Company | Dallas, TX 75243-3795 | Oil & Gas Operator | Jan 2025 |
| 17686 | Longview Production, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2002 |
| 17687 | Longville Production Co., Inc. | | Oil & Gas Operator | Sep 1995 |
| 17688 | Lonnie Ware | Wynona, OK 74084 | Oil & Gas Operator | Jan 2025 |
| 17689 | Lonny Bruce Operations, L.L.C. | McPherson, KS 67460 | Oil & Gas Operator | Apr 2009 |
| 17690 | Lor-Rob Associates L.L.C. | East Bethany, NY 14054 | Gas Operator | Dec 2023 |
| 17691 | Lorac, Inc. | Dallas, TX 75252 | Oil & Gas Operator | Apr 2025 |
| 17692 | Loral Operating LLC | Sheridan, WY 82801 | Gas Operator | Apr 2011 |
| 17693 | Lord Enterprises Inc | Oklahoma City, OK 73106-5050 | Oil & Gas Operator | Sep 2000 |
| 17694 | Lorentz Oil & Gas LLC | Edmond, OK 73034-7266 | Oil & Gas Operator | Jan 2025 |
| 17695 | Lorenz & Bosanko | San Antonio, TX 78247 | Oil & Gas Operator | Apr 2025 |
| 17696 | Lorenz Robert M | | Oil & Gas Operator | Oct 1984 |
| 17697 | Lorenz, Barton T. | Cherryvale, KS 67335 | Oil & Gas Operator | Jul 2013 |
| 17698 | Lorenz, J. P., Jr. | La Vernia, TX 78121 | Oil & Gas Operator | Mar 2008 |
| 17699 | Lorenz, James D. | Parsons, KS 67357 | Oil & Gas Operator | May 2014 |
| 17700 | Lorenzen Oil Company, Inc. | O?Fallon, MO 63368 | Oil Operator | Nov 2024 |