| 17101 | Linn Western Operating Inc. | | Oil & Gas Operator | Jan 2018 |
| 17102 | Linop Corporation | Austin, TX 78728 | Oil & Gas Operator | Jul 2025 |
| 17103 | Linville Natural Gas Co. Inc. | | Gas Operator | Sep 2000 |
| 17104 | Lio-1 Corporation | Las Vegas, NV 89116 | Oil Operator | Feb 2025 |
| 17105 | Lion Energy Co LLC | Wexford, PA 15090-6315 | Oil & Gas Operator | Dec 2014 |
| 17106 | Lion Oil & Gas Company LLC | | Oil & Gas Operator | Dec 1993 |
| 17107 | Lion Oil Company | Chanute, KS 66720 | Oil Operator | Dec 1986 |
| 17108 | Lion Petroleum Company | Oklahoma City, OK 73120-4503 | Oil & Gas Operator | Aug 2015 |
| 17109 | Lion Production, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2006 |
| 17110 | Lionheart Energy Corporation | Durango, CO 81301 | Oil & Gas Operator | Jul 2025 |
| 17111 | Lions Den Operating LLC | Carthage, TX 75633 | Gas Operator | Jul 2025 |
| 17112 | Lipan Flats Production, L.L.C. | San Angelo, TX 76905 | Oil Operator | Jul 2025 |
| 17113 | Lippizan Petroleum, Inc. | Ellenboro, WV 26346 | Oil & Gas Operator | Dec 2024 |
| 17114 | Lipps, Alfred J. | Burnsville, WV 26355-0000 | Oil & Gas Operator | Sep 2017 |
| 17115 | Liquid Petroleum Resources, Inc. | Amarillo, TX 79120 | Gas Operator | Jul 2025 |
| 17116 | Lischer, Michael J. | Elma, NY 14059 | Gas Operator | Dec 2024 |
| 17117 | Lishberg Petroleum Inc | Jerusaleum, OH 43747 | Oil & Gas Operator | Dec 2024 |
| 17118 | Lissner, Lindy | Jourdanton, TX 78026 | Oil & Gas Operator | Jul 2025 |
| 17119 | Lissolo J W | Yuma, AZ 85365 | Oil & Gas Operator | Feb 2017 |
| 17120 | Lissolo Timothy C | Newcastle, WY 82701 | Oil Operator | Jun 2025 |
| 17121 | Liston V Dean | Nowata, OK 74048-5200 | Oil & Gas Operator | Nov 2016 |
| 17122 | Litan, David | Wichita, KS 67218 | Oil Operator | Jun 1990 |
| 17123 | Litchfield Production Co. | Nederland, TX 77627 | Oil & Gas Operator | Jul 2025 |
| 17124 | Lithos Exploration Inc | | Oil & Gas Operator | Nov 2014 |
| 17125 | Litsey Exploration LLC | Okmulgee, OK 74447 | Oil & Gas Operator | Apr 2025 |
| 17126 | Little & Whyte Operating, Inc. | Tyler, TX 75711 | Oil & Gas Operator | Mar 2008 |
| 17127 | Little Bear Oil & Gas Co LTD | Boca Rotan, FL 33431 | Oil & Gas Operator | Jan 1997 |
| 17128 | Little Bear Resources LLC | Stillwater, OK 74074-1388 | Oil & Gas Operator | Feb 2013 |
| 17129 | Little Chicago Oil & Gas Inc | Edmond, OK 73034-0809 | Oil & Gas Operator | Dec 2017 |
| 17130 | Little Chief Energy Corporation | Independence, KS 67301 | Oil Operator | Apr 2025 |
| 17131 | Little Creek Properties Inc. | | Oil Operator | Apr 2025 |
| 17132 | Little Cypress Oil & Gas, L.L.C. | Fullerton, CA 92834 | Oil Operator | Jul 2025 |
| 17133 | Little Drop Oil Company | Graham, TX 76450 | Oil & Gas Operator | Jul 2025 |
| 17134 | Little Guy Oil & Gas, Inc. | Pratt, KS 67124 | Oil Operator | Aug 2013 |
| 17135 | Little Iowa LLC | Sinclairville, NY 14782 | Gas Operator | Dec 2024 |
| 17136 | Little Jewel LLC | | Oil & Gas Operator | Apr 2025 |
| 17137 | Little Joe'S Oil Company | | Oil Operator | Jul 2020 |
| 17138 | Little Man Gas, LLC | Pikeville, KY 41501 | Gas Operator | Dec 2021 |
| 17139 | Little Neil Oil | | Oil Operator | Jul 1994 |
| 17140 | Little O Oil Company | Velma, OK 73091-0425 | Oil & Gas Operator | Apr 2015 |
| 17141 | Little Oil & Gas | Pampa, TX 79065 | Oil & Gas Operator | Jul 2025 |
| 17142 | Little Oil And Gas, Inc. | Farmington, NM 87499 | Oil & Gas Operator | Aug 2005 |
| 17143 | Little Oil Company LLC | Cushing, OK 74023 | Oil Operator | Apr 2025 |
| 17144 | Little River Energy Company | Drumright, OK 74030 | Oil & Gas Operator | May 2025 |
| 17145 | Little Thunder, LLC | Bartlesville, OK 74003 | Oil Operator | Apr 2025 |
| 17146 | Little, Jay R. | Limestone, NY 14753 | Oil & Gas Operator | Dec 2024 |
| 17147 | Little, Lou Operating Co., Inc. | Portland, TX 78374 | Oil & Gas Operator | Sep 2014 |
| 17148 | Little, Quintin Company,Inc.,The | Ardmore, OK 73402 | Oil & Gas Operator | Jul 2025 |
| 17149 | Littlefield Oil & Gas Company | | Oil & Gas Operator | Jan 1990 |
| 17150 | Littlepage, Tommy | Graham, TX 76450 | Oil & Gas Operator | May 1996 |
| 17151 | Littrell Chemical Inc | Cleo Springs, OK 73729 | Oil & Gas Operator | Jan 2005 |
| 17152 | Litzenberger Exploration | Waynoka, OK 73860 | Oil & Gas Operator | Jul 1996 |
| 17153 | Litzenberger Exploration Inc | Waynoka, OK 73860 | Oil & Gas Operator | May 2025 |
| 17154 | Live Oak Energy, Inc. | | Oil & Gas Operator | Dec 2011 |
| 17155 | Live Oak Gas Company | Dallas, TX 75251 | Oil & Gas Operator | Jul 2025 |
| 17156 | Live Oak Op & Production, L.L.C. | Austin, TX 78759 | Oil & Gas Operator | Nov 2011 |
| 17157 | Live Oak Petroleum, Inc. | Dallas, TX 75251 | Gas Operator | Mar 2001 |
| 17158 | Live Oak Reserves, Inc. | Houston, TX 77019 | Oil & Gas Operator | Jul 2025 |
| 17159 | Live Oak/Operations, Inc. | Houston, TX 77019 | Gas Operator | Jul 2011 |
| 17160 | Lively Energy & Development Corp | Boerne, TX 78015 | Oil & Gas Operator | May 2015 |
| 17161 | Lively Exploration Company | Houston, TX 77063 | Oil & Gas Operator | Jul 2025 |
| 17162 | Livingston, David Oil Company | Haskell, TX 79521 | Oil & Gas Operator | Aug 2003 |
| 17163 | Livingston, F. L. | Megargel, TX 76370 | Oil & Gas Operator | May 2018 |
| 17164 | Lizard Lick Transport, LLC | Grandfalls, TX 79742 | Oil & Gas Operator | Jul 2025 |
| 17165 | Lizard Oil & Gas, LLC | Bloomfield, NM 87413 | Oil & Gas Operator | Feb 2017 |
| 17166 | LKD Corp. | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2018 |
| 17167 | LKKTX 2018, LLC | Wichita Falls, TX 76305 | Oil Operator | Jul 2025 |
| 17168 | LKM Oil & Gas | Jacksboro, TX 76458 | Oil & Gas Operator | Sep 2024 |
| 17169 | LKM Oil And Gas LLC | Jacksboro, TX 76458 | Oil & Gas Operator | Jul 2025 |
| 17170 | Lko Operating LLC | | Oil & Gas Operator | Feb 2017 |
| 17171 | LL&N Oil & Gas Co., Inc. | | Oil Operator | Sep 1982 |
| 17172 | Llano Land & Exploration Co | Roswell, NM 88202 | Oil & Gas Operator | Sep 2004 |
| 17173 | Llano Management Company, Inc. | El Campo, TX 77437 | Gas Operator | Oct 2001 |
| 17174 | Llano Production Company | Fort Worth, TX 76102 | Oil & Gas Operator | Jul 2025 |
| 17175 | Llewellin Operating Company, LLC | Houston, TX 77024 | Oil & Gas Operator | Dec 2017 |
| 17176 | LLJ Ventures, LLC Dba Marker Oil & Gas | Roswell, NM 88202 | Oil & Gas Operator | Apr 2022 |
| 17177 | Llog Expl. Co. | Metairie, LA 70005 | Oil & Gas Operator | Jan 2003 |
| 17178 | Llog Expl. Co.-Biggs | | Oil Operator | Sep 1985 |
| 17179 | Llog Exploration & Prod Co | | Oil & Gas Operator | Jul 2000 |
| 17180 | Llog Exploration Company, L.L.C. | | Oil & Gas Operator | May 2025 |
| 17181 | Llog Exploration Offshore, Inc. | Covington, LA 70433 | Oil & Gas Operator | Aug 2004 |
| 17182 | Llog Exploration Texas, L.P. | Covington, LA 70433 | Oil & Gas Operator | Jul 2025 |
| 17183 | Llog Production Company | Metairie, LA 70005 | Oil & Gas Operator | Apr 1995 |
| 17184 | Llosu Corporation | Rawlins, WY 82301 | Oil & Gas Operator | Mar 2002 |
| 17185 | Llox, L.L.C. | Covington, LA 70433 | Oil & Gas Operator | Jul 2025 |
| 17186 | Lloyd Drilling C | | Oil Operator | Aug 1995 |
| 17187 | Lloyd Drilling Company | Morland, KS 67650 | Oil Operator | Oct 2009 |
| 17188 | Lloyd H. Smith | | Oil & Gas Operator | Mar 1972 |
| 17189 | Lloyd M McKenzie | | Oil Operator | Mar 2001 |
| 17190 | LLP Gas And Oil Corporation | Dover, OH 44622 | Oil & Gas Operator | Dec 2024 |
| 17191 | LLR Operating | Pampa, TX 79065 | Oil Operator | Jul 2025 |
| 17192 | LLT Energy, Inc. | Luling, TX 78648 | Oil & Gas Operator | Jul 2025 |
| 17193 | LMH Energy | Wichita Falls, TX 76302 | Oil & Gas Operator | Jul 2025 |
| 17194 | LMN Oil And Gas, Inc. | Luling, TX 78648 | Oil & Gas Operator | Mar 2008 |
| 17195 | LMP Exploration Operating, LLC | Corpus Chrsti, TX 78477 | Oil & Gas Operator | Feb 2008 |
| 17196 | LMP Petroleum, Inc. | Corpus Chrsti, TX 78477 | Oil & Gas Operator | Jan 2010 |
| 17197 | LNG Gathering Company | | Oil Operator | Oct 2024 |
| 17198 | LNH Oil Company | Midland, TX 79708 | Oil & Gas Operator | Jan 2006 |
| 17199 | LNR Energy Corp | Houston, TX 77002 | Oil & Gas Operator | Mar 2008 |
| 17200 | Lo-Jel Energy LLC | Oklahoma City, OK 73162-7418 | Oil & Gas Operator | Nov 2019 |