| 17401 | Lone MTN Production Co | Billings, MT 59108-0965 | Oil & Gas Operator | Jul 2019 |
| 17402 | Lone Oak Energy Inc | Kyle, TX 78640 | Oil & Gas Operator | May 2025 |
| 17403 | Lone Pine Operating Company, Inc. | Salem, WV 26426 | Oil & Gas Operator | Dec 2021 |
| 17404 | Lone Pine Production Assoc.,Inc. | Houston, TX 77056 | Oil & Gas Operator | Apr 1993 |
| 17405 | Lone Star Gas Co. | Dallas, TX 75201 | Oil & Gas Operator | Jul 1999 |
| 17406 | Lone Star Interests, Inc. | Chanute, KS 66720 | Oil Operator | Sep 2001 |
| 17407 | Lone Star Land And Energy II LLC | Dallas, TX 75214 | Oil & Gas Operator | Jan 2020 |
| 17408 | Lone Star Oil & Gas | Midland, TX 79702 | Oil & Gas Operator | May 2025 |
| 17409 | Lone Star Oil & Gas, Inc | Greenville, KY 42345 | Oil & Gas Operator | Dec 2023 |
| 17410 | Lone Star Oil Co. | Jacksboro, TX 76458 | Oil & Gas Operator | Jan 2025 |
| 17411 | Lone Star Operating Company | Pearsall, TX 78061 | Oil & Gas Operator | May 2025 |
| 17412 | Lone Star Operations LLC | Lubbock, TX 79401 | Oil & Gas Operator | May 2025 |
| 17413 | Lone Star Pipeline Company | Dallas, TX 75201 | Oil & Gas Operator | Jul 1999 |
| 17414 | Lone Star Production | Lawn, TX 79530 | Oil & Gas Operator | May 2025 |
| 17415 | Lone Star Resources Company | Keyes, OK 73947 | Oil & Gas Operator | Mar 2015 |
| 17416 | Lone Star Services | Pecos, TX 79772 | Oil & Gas Operator | May 2025 |
| 17417 | Lone Tree Oil & Gas LLC | Greenwood VLG, CO 80111 | Oil & Gas Operator | May 2025 |
| 17418 | Lone Wolf Oil & Gas Co., LLC | Moline, KS 67353 | Oil & Gas Operator | Jan 2025 |
| 17419 | Lone Wolf Oil LLC | Wellsville, KS 66092 | Oil Operator | Dec 2009 |
| 17420 | Lone Wolf Operating Company | Denver, CO 80202 | Oil & Gas Operator | Nov 2005 |
| 17421 | Lone Wolf Operating Company, LP | Haxtun, CO 80731 | Oil & Gas Operator | Sep 2009 |
| 17422 | Lone Wolf Operating, LLC | Billings, MT 59108 | Oil & Gas Operator | Feb 2025 |
| 17423 | Lonesome B, LLC | Monahans, TX 79756 | Oil & Gas Operator | May 2025 |
| 17424 | Lonestar Foundation Inc. | | Oil Operator | Dec 2008 |
| 17425 | Lonestar Operating, LLC | Houston, TX 77084 | Oil & Gas Operator | Nov 2022 |
| 17426 | Lonestar Petroleum Services, LLC | Artesia, NM 88210 | Oil Operator | Mar 2025 |
| 17427 | Lonestar Production Services | Graham, TX 76450 | Oil Operator | May 2025 |
| 17428 | Long Acres Prod. Co., Inc. | | Oil & Gas Operator | Aug 1986 |
| 17429 | Long And Ware Oil, A General Partnership | Pawhuska, OK 74056 | Oil Operator | Jan 2021 |
| 17430 | Long Beach Oil Development Co | Glendale, CA 91203 | Oil & Gas Operator | Jun 2004 |
| 17431 | Long Branch Production, LLC | Buna, TX 77612 | Gas Operator | Sep 2024 |
| 17432 | Long Bros. Oil Co. | | Oil Operator | Jul 2015 |
| 17433 | Long Drilling Company, LLC | Hamilton, KS 66853 | Oil Operator | Jan 2025 |
| 17434 | Long Engineering Company Inc | Oklahoma City, OK 73112-7769 | Oil Operator | Jun 2008 |
| 17435 | Long George L | San Antonio, TX 78209 | Oil & Gas Operator | Feb 1996 |
| 17436 | Long Jack Senior | | Oil Operator | Jan 2004 |
| 17437 | Long Oil & Natural Gas Corp. | | Oil & Gas Operator | Feb 1996 |
| 17438 | Long Oil And Gas Expl., LTD | | Oil & Gas Operator | Apr 1988 |
| 17439 | Long Operating, L.L.C. | Shreveport, LA 71166 | Oil & Gas Operator | Jun 2006 |
| 17440 | Long Petroleum, Inc. | Shreveport, LA 71166 | Oil & Gas Operator | Jun 2020 |
| 17441 | Long Phillip C | Muskogee, OK 74403 | Oil & Gas Operator | May 2013 |
| 17442 | Long Production LLC | Claremore, OK 74017-2808 | Oil & Gas Operator | Oct 2019 |
| 17443 | Long Resources Inc | San Antonio, TX 78230-2890 | Oil & Gas Operator | Mar 2025 |
| 17444 | Long Royalty Company | Yukon, OK 73085 | Oil & Gas Operator | Jan 2004 |
| 17445 | Long Shot Oil Co. | | Oil Operator | Aug 1997 |
| 17446 | Long Trust The | Kilgore, TX 75663 | Oil & Gas Operator | Aug 2008 |
| 17447 | Long Trusts, The | Kilgore, TX 75663 | Oil & Gas Operator | May 2025 |
| 17448 | Long, Edgar E. | Windthorst, TX 76389 | Oil & Gas Operator | Oct 2011 |
| 17449 | Long, Edwin A. And Glenda | Hamilton, KS 66853 | Oil Operator | Aug 2000 |
| 17450 | Long, James A | | Oil Operator | Aug 2000 |
| 17451 | Long, John P | | Oil & Gas Operator | Feb 2025 |
| 17452 | Long, Larry T. | Kilgore, TX 75663 | Oil & Gas Operator | Jun 2017 |
| 17453 | Long, Lewis C., A General Partnership | Hamilton, KS 66853 | Oil Operator | Dec 2019 |
| 17454 | Long, Marshall | Chase, KS 67524 | Oil Operator | Mar 1986 |
| 17455 | Long-Tex Exploration, Inc. | Kilgore, TX 75662 | Oil & Gas Operator | May 2025 |
| 17456 | Longacre Oil & Gas | Enid, OK 73702 | Oil & Gas Operator | Mar 2013 |
| 17457 | Longberry Energy Inc | Keota, OK 74941 | Gas Operator | Mar 2025 |
| 17458 | Longbotham Energy, LLC | Jackson, TN 38308 | Oil Operator | May 2025 |
| 17459 | Longbow LLC | | Oil & Gas Operator | Mar 2025 |
| 17460 | Longbranch Oil Company | Oklahoma City, OK 73154-0735 | Oil & Gas Operator | Mar 2018 |
| 17461 | Longfellow Energy, LP | Dallas, TX 75225 | Oil & Gas Operator | May 2025 |
| 17462 | Longhorn Crude, LLC | Jetmore, KS 67854 | Oil Operator | Jan 2025 |
| 17463 | Longhorn Energy | | Oil & Gas Operator | Jun 1991 |
| 17464 | Longhorn Estates & Cattle Co. LLC | Jennings, OK 74038 | Oil Operator | Feb 2025 |
| 17465 | Longhorn Mineral Corporation | Bellaire, TX 77401 | Oil & Gas Operator | May 2018 |
| 17466 | Longhorn Oil & Gas | | Oil Operator | Jan 2025 |
| 17467 | Longhorn Oil & Gas Company | | Oil & Gas Operator | Sep 1982 |
| 17468 | Longhorn Oil Properties, Inc. | Pottsboro, TX 75076 | Oil & Gas Operator | May 2025 |
| 17469 | Longhorn Propert | | Oil Operator | Feb 1989 |
| 17470 | Longhorn Service & Drilling Co. | Kermit, TX 79745 | Oil & Gas Operator | Jun 2019 |
| 17471 | Longhurst Oil & Gas Inc | | Oil & Gas Operator | Nov 2013 |
| 17472 | Longleaf Energy Group, Inc. | Brewton, AL 36426 | Oil & Gas Operator | Feb 2004 |
| 17473 | Longleaf Gas & Oil | | Oil Operator | May 2010 |
| 17474 | Longs Peak Resources LLC | Houston, TX 77019 | Oil & Gas Operator | Mar 2025 |
| 17475 | Longshot Energy LLC | League City, TX 77573 | Oil Operator | May 2025 |
| 17476 | Longton Explorat | | Oil & Gas Operator | Jul 1993 |
| 17477 | Longton Explorations | | Oil & Gas Operator | Dec 2024 |
| 17478 | Longview Production Company | Dallas, TX 75243-3795 | Oil & Gas Operator | Feb 2025 |
| 17479 | Longview Production, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2002 |
| 17480 | Longville Production Co., Inc. | | Oil & Gas Operator | Sep 1995 |
| 17481 | Lonny Bruce Operations, L.L.C. | McPherson, KS 67460 | Oil & Gas Operator | Apr 2009 |
| 17482 | Lor-Rob Associates L.L.C. | East Bethany, NY 14054 | Gas Operator | Dec 2023 |
| 17483 | Lorac, Inc. | Dallas, TX 75252 | Oil & Gas Operator | May 2025 |
| 17484 | Loral Operating LLC | Sheridan, WY 82801 | Gas Operator | Apr 2011 |
| 17485 | Lord Enterprises Inc | Oklahoma City, OK 73106-5050 | Oil & Gas Operator | Sep 2000 |
| 17486 | Lorentz Oil & Gas LLC | Edmond, OK 73034-7266 | Oil & Gas Operator | Feb 2025 |
| 17487 | Lorenz & Bosanko | San Antonio, TX 78247 | Oil & Gas Operator | May 2025 |
| 17488 | Lorenz Robert M | | Oil & Gas Operator | Oct 1984 |
| 17489 | Lorenz, Barton T. | Cherryvale, KS 67335 | Oil & Gas Operator | Jul 2013 |
| 17490 | Lorenz, J. P., Jr. | La Vernia, TX 78121 | Oil & Gas Operator | Mar 2008 |
| 17491 | Lorenz, James D. | Parsons, KS 67357 | Oil & Gas Operator | May 2014 |
| 17492 | Lorenzen Oil Company, Inc. | O?Fallon, MO 63368 | Oil Operator | Nov 2024 |
| 17493 | Loretto, Jason C. | Alden, NY 14004 | Gas Operator | Dec 2023 |
| 17494 | Lorlan Oil Company | Wink, TX 79789 | Oil & Gas Operator | Aug 2020 |
| 17495 | Los Angeles Unified School District | | Oil Operator | Dec 2014 |
| 17496 | Losure Pet. Co. | Borger, TX 79008 | Oil & Gas Operator | Apr 2014 |
| 17497 | Losure, Ken | Borger, TX 79008 | Oil & Gas Operator | May 2025 |
| 17498 | Lotex Exploration & Prod. Co. | Carrollton, TX 75006 | Oil & Gas Operator | Jul 2011 |
| 17499 | Lothes John W | Newark, OH 43055 | Oil & Gas Operator | Dec 2024 |
| 17500 | Lothian Oil Texas I, Inc. | Dallas, TX 75204 | Oil & Gas Operator | Mar 2008 |