| 17001 | Long And Ware Oil, A General Partnership | Pawhuska, OK 74056 | Oil Operator | Jan 2021 |
| 17002 | Long Beach Oil Development Co | Glendale, CA 91203 | Oil & Gas Operator | Jun 2004 |
| 17003 | Long Bros. Oil Co. | | Oil Operator | Jul 2015 |
| 17004 | Long Drilling Company, LLC | Hamilton, KS 66853 | Oil Operator | May 2026 |
| 17005 | Long Engineering Company Inc | Oklahoma City, OK 73112-7769 | Oil Operator | Jun 2008 |
| 17006 | Long George L | San Antonio, TX 78209 | Oil & Gas Operator | Feb 1996 |
| 17007 | Long Jack Senior | | Oil Operator | Jan 2004 |
| 17008 | Long Oil & Natural Gas Corp. | | Oil & Gas Operator | Feb 1996 |
| 17009 | Long Oil And Gas Expl., LTD | | Oil & Gas Operator | Apr 1988 |
| 17010 | Long Operating, L.L.C. | Shreveport, LA 71166 | Oil & Gas Operator | Jun 2006 |
| 17011 | Long Petroleum, Inc. | Shreveport, LA 71166 | Oil & Gas Operator | Jun 2020 |
| 17012 | Long Production LLC | Claremore, OK 74017-2808 | Oil & Gas Operator | Oct 2019 |
| 17013 | Long Resources Inc | Austin, TX 78730 | Oil & Gas Operator | Jul 2026 |
| 17014 | Long Royalty Company | Yukon, OK 73085 | Oil & Gas Operator | Jan 2004 |
| 17015 | Long Shot Oil Co. | | Oil Operator | Aug 1997 |
| 17016 | Long Trust The | Kilgore, TX 75663 | Oil & Gas Operator | Aug 2008 |
| 17017 | Long Trusts, The | Kilgore, TX 75663 | Oil & Gas Operator | Sep 2026 |
| 17018 | Long, Edgar E. | Windthorst, TX 76389 | Oil & Gas Operator | Oct 2011 |
| 17019 | Long, Edwin A. And Glenda | Hamilton, KS 66853 | Oil Operator | Aug 2000 |
| 17020 | Long, James A | | Oil Operator | Aug 2000 |
| 17021 | Long, John P | | Oil & Gas Operator | Jun 2026 |
| 17022 | Long, Larry T. | Kilgore, TX 75663 | Oil & Gas Operator | Jun 2017 |
| 17023 | Long, Lewis C., A General Partnership | Hamilton, KS 66853 | Oil Operator | Dec 2019 |
| 17024 | Long, Marshall | Chase, KS 67524 | Oil Operator | Mar 1986 |
| 17025 | Long-Tex Exploration, Inc. | Kilgore, TX 75662 | Oil & Gas Operator | Sep 2026 |
| 17026 | Longacre Oil & Gas | Enid, OK 73702 | Oil & Gas Operator | Mar 2013 |
| 17027 | Longberry Energy Inc | Keota, OK 74941 | Gas Operator | Jul 2026 |
| 17028 | Longbotham Energy, LLC | Jackson, TN 38308 | Oil Operator | Sep 2026 |
| 17029 | Longbow LLC | | Oil & Gas Operator | Jul 2026 |
| 17030 | Longbranch Oil Company | Oklahoma City, OK 73154-0735 | Oil & Gas Operator | Mar 2018 |
| 17031 | Longfellow Energy, LP | Dallas, TX 75225 | Oil & Gas Operator | Sep 2026 |
| 17032 | Longhorn Crude, LLC | Jetmore, KS 67854 | Oil Operator | May 2026 |
| 17033 | Longhorn Energy | | Oil & Gas Operator | Jun 1991 |
| 17034 | Longhorn Estates & Cattle Co. LLC | Jennings, OK 74038 | Oil Operator | Jun 2026 |
| 17035 | Longhorn Mineral Corporation | Bellaire, TX 77401 | Oil & Gas Operator | May 2018 |
| 17036 | Longhorn Oil & Gas | | Oil Operator | Sep 2025 |
| 17037 | Longhorn Oil & Gas Company | | Oil & Gas Operator | Sep 1982 |
| 17038 | Longhorn Oil Properties, Inc. | Pottsboro, TX 75076 | Oil & Gas Operator | Sep 2026 |
| 17039 | Longhorn Propert | | Oil Operator | Feb 1989 |
| 17040 | Longhorn Service & Drilling Co. | Kermit, TX 79745 | Oil & Gas Operator | Jun 2019 |
| 17041 | Longhurst Oil & Gas Inc | | Oil & Gas Operator | Nov 2013 |
| 17042 | Longleaf Energy Group, Inc. | Brewton, AL 36426 | Oil & Gas Operator | Feb 2004 |
| 17043 | Longleaf Gas & Oil | | Oil Operator | May 2010 |
| 17044 | Longs Peak Resources LLC | Houston, TX 77019 | Oil & Gas Operator | Jul 2026 |
| 17045 | Longshot Energy LLC | League City, TX 77573 | Oil Operator | Sep 2026 |
| 17046 | Longton Explorat | | Oil & Gas Operator | Jul 1993 |
| 17047 | Longton Explorations | | Oil & Gas Operator | Aug 2025 |
| 17048 | Longview Production Company | Dallas, TX 75243-3795 | Oil & Gas Operator | Jun 2026 |
| 17049 | Longview Production, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2002 |
| 17050 | Longville Production Co., Inc. | | Oil & Gas Operator | Sep 1995 |
| 17051 | Lonny Bruce Operations, L.L.C. | McPherson, KS 67460 | Oil & Gas Operator | Apr 2009 |
| 17052 | Lorac, Inc. | Dallas, TX 75252 | Oil & Gas Operator | Sep 2026 |
| 17053 | Loral Operating LLC | Sheridan, WY 82801 | Gas Operator | Apr 2011 |
| 17054 | Lord Enterprises Inc | Oklahoma City, OK 73106-5050 | Oil & Gas Operator | Sep 2000 |
| 17055 | Lorentz Oil & Gas LLC | Edmond, OK 73034-7266 | Oil & Gas Operator | Jun 2026 |
| 17056 | Lorenz & Bosanko | San Antonio, TX 78247 | Oil & Gas Operator | Sep 2026 |
| 17057 | Lorenz Robert M | | Oil & Gas Operator | Oct 1984 |
| 17058 | Lorenz, Barton T. | Cherryvale, KS 67335 | Oil & Gas Operator | Jul 2013 |
| 17059 | Lorenz, J. P., Jr. | La Vernia, TX 78121 | Oil & Gas Operator | Mar 2008 |
| 17060 | Lorenz, James D. | Parsons, KS 67357 | Oil & Gas Operator | May 2014 |
| 17061 | Lorenzen Oil Company, Inc. | O?Fallon, MO 63368 | Oil Operator | Feb 2026 |
| 17062 | Loretto, Jason C. | Alden, NY 14004 | Gas Operator | Dec 2025 |
| 17063 | Lorlan Oil Company | Wink, TX 79789 | Oil & Gas Operator | Aug 2020 |
| 17064 | Los Angeles Unified School District | | Oil Operator | Dec 2014 |
| 17065 | Los Hijos De Sanchez J LLC | Beeville, TX 78102 | Oil Operator | Sep 2026 |
| 17066 | Los Indios Exploration LLC | McAllen, TX 78504 | Oil Operator | Sep 2026 |
| 17067 | Losure Pet. Co. | Borger, TX 79008 | Oil & Gas Operator | Apr 2014 |
| 17068 | Losure, Ken | Borger, TX 79008 | Oil & Gas Operator | Sep 2026 |
| 17069 | Lotex Exploration & Prod. Co. | Carrollton, TX 75006 | Oil & Gas Operator | Jul 2011 |
| 17070 | Lothes John W | Newark, OH 43055 | Oil & Gas Operator | Dec 2025 |
| 17071 | Lothian Oil Texas I, Inc. | Dallas, TX 75204 | Oil & Gas Operator | Mar 2008 |
| 17072 | Loto Energy LLC | Saint Louis, MO 63105 | Oil & Gas Operator | Jul 2026 |
| 17073 | Lott Production Company | San Antonio, TX 78217 | Oil & Gas Operator | Sep 2026 |
| 17074 | Lotter Gas Co., Inc. | | Gas Operator | Apr 2009 |
| 17075 | Lottie Oil Co. | Seguin, TX 78156 | Oil & Gas Operator | Apr 1996 |
| 17076 | Lotus O&G, LLC | Mansfield, TX 76063 | Oil Operator | Sep 2026 |
| 17077 | Lotus Operating Company, L.L.C. | Wichita, KS 67204 | Oil & Gas Operator | May 2026 |
| 17078 | Lou Dennis Oil Company Inc | Ada, OK 74820-2303 | Oil & Gas Operator | Jun 2016 |
| 17079 | Loudel, Inc. | Perryton, TX 79070 | Oil & Gas Operator | Sep 2026 |
| 17080 | Loudon Exploration, Inc. | San Antonio, TX 78217 | Oil & Gas Operator | Mar 2008 |
| 17081 | Loudon Operating Company, L.L.C. | Dallas, TX 75206 | Oil & Gas Operator | Sep 2026 |
| 17082 | Louis Dreyfus Natural Gas Corp. | Oklahoma City, OK 73134 | Oil & Gas Operator | Mar 2015 |
| 17083 | Louis Dreyfus Natural Gas Inc | Houston, TX 770103088 | Oil & Gas Operator | Sep 1997 |
| 17084 | Louis J. Roussel | | Oil & Gas Operator | Sep 1991 |
| 17085 | Louisiana Crude Oil&Gas Co Inc | | Oil & Gas Operator | Mar 1984 |
| 17086 | Louisiana Delta Oil Co, LLC | | Oil & Gas Operator | Nov 2024 |
| 17087 | Louisiana Energy & Environmental, Inc. | | Oil & Gas Operator | Aug 2015 |
| 17088 | Louisiana Energy Consultant Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Sep 2026 |
| 17089 | Louisiana Energy Consultants, Inc. | | Oil & Gas Operator | Dec 2024 |
| 17090 | Louisiana Energy Investors, L.L.C. | | Oil & Gas Operator | Jun 2016 |
| 17091 | Louisiana Fuel Oil Corporation | | Oil Operator | Aug 1997 |
| 17092 | Louisiana Gas Development Corp | | Oil & Gas Operator | Jan 2025 |
| 17093 | Louisiana Gas Production Co | | Gas Operator | Dec 1996 |
| 17094 | Louisiana Gas Service Co. | | Oil Operator | May 2004 |
| 17095 | Louisiana Gas System, Inc. | | Oil Operator | Apr 2004 |
| 17096 | Louisiana General Petr. Corp. | | Oil & Gas Operator | Mar 1980 |
| 17097 | Louisiana Intrastate Gas Corp. | | Oil Operator | Feb 1994 |
| 17098 | Louisiana Jordan Oil Co, Inc. | Lake Charles, LA 70602 | Oil & Gas Operator | Dec 2024 |
| 17099 | Louisiana Land & Exploration Co. | Houston, TX 77210 | Oil & Gas Operator | Sep 2013 |
| 17100 | Louisiana Leasing & Expl, Inc. | | Oil & Gas Operator | Apr 2011 |