| 16001 | Lacy, J. W., Jr. | Midland, TX 79702 | Oil & Gas Operator | Dec 2007 |
| 16002 | Lacy, R | Longview, TX 75606 | Oil Operator | Apr 1989 |
| 16003 | Lacy, R., Inc. | Longview, TX 75606 | Oil & Gas Operator | Jan 2002 |
| 16004 | Ladd & Lukowicz | | Oil & Gas Operator | May 1983 |
| 16005 | Ladd LLC | El Reno, OK 73036 | Oil & Gas Operator | Nov 2018 |
| 16006 | Ladd Oil & Gas Corporation | Midland, TX 79711 | Oil & Gas Operator | Dec 2021 |
| 16007 | Ladd Operating Company | Midland, TX 79711 | Oil & Gas Operator | Mar 2008 |
| 16008 | Ladd Petroleum C | | Oil & Gas Operator | Sep 1989 |
| 16009 | Ladd Petroleum Corp. | Denver, CO 80202 | Oil & Gas Operator | Oct 2004 |
| 16010 | Ladder Energy Company | Tulsa, OK 74120-4281 | Oil & Gas Operator | Jan 2018 |
| 16011 | Laddex, LTD. | Amarillo, TX 79102 | Oil & Gas Operator | Feb 2025 |
| 16012 | Lafayette Oilfield Contractors, Inc. | | Oil Operator | Dec 2024 |
| 16013 | Lafonda Energy LLC | Vernon, TX 76384 | Oil Operator | Jun 2026 |
| 16014 | Lagarto Company, The | Fredericksbrg, TX 78624 | Oil & Gas Operator | Apr 1995 |
| 16015 | Lagerquist, Walter G., Jr. | San Antonio, TX 78209 | Oil & Gas Operator | Sep 2005 |
| 16016 | Lagniappe Interest Inc | Evergreen, CO 80439 | Oil & Gas Operator | Jun 2006 |
| 16017 | Lagniappe Interests, Inc. | | Oil & Gas Operator | Dec 2003 |
| 16018 | Lagniappe Operating, LLC | | Oil Operator | Dec 2024 |
| 16019 | Lagniappe Petrole, LLC | | Oil & Gas Operator | Dec 2025 |
| 16020 | Lago Petroleum Co. | | Oil & Gas Operator | Jan 1992 |
| 16021 | Lago VIsta Operating, L.L.C. | | Oil Operator | Dec 2024 |
| 16022 | Lagoon Water Logistics LLC | Oklahoma City, OK 73103 | Oil Operator | Jul 2024 |
| 16023 | Laguna County Sanitation District | | Oil & Gas Operator | Dec 2003 |
| 16024 | Laguna Oil & Gas Corp. | Weesatche, TX 77993 | Oil & Gas Operator | Jun 2026 |
| 16025 | Laguna Petroleum Company | Casper, WY 82601 | Oil & Gas Operator | Dec 1982 |
| 16026 | Laguna Petroleum Corporation | Houston, TX 77046 | Oil & Gas Operator | Jun 2026 |
| 16027 | Laguna Texas Resources, LLC | Houston, TX 77056 | Oil & Gas Operator | Jun 2026 |
| 16028 | Lahd Energy Inc | Canton, OH 44709 | Gas Operator | Dec 2009 |
| 16029 | Lahoma Gas Company | | Gas Operator | Dec 1980 |
| 16030 | Lahoma Operating, Inc. | | Oil & Gas Operator | Apr 2026 |
| 16031 | Lahoma Production Inc | Jenks, OK 74037 | Oil & Gas Operator | Mar 2026 |
| 16032 | Lainco Well Service | Hamlin, TX 79520 | Oil & Gas Operator | Dec 1996 |
| 16033 | Lainco Well Service, Inc. | Hamlin, TX 79520 | Oil & Gas Operator | Aug 2011 |
| 16034 | Lainco, Inc. | Hamlin, TX 79520 | Oil & Gas Operator | Jun 2026 |
| 16035 | Laird Anita Louise | Asher, OK 74826-3215 | Oil Operator | Jun 2018 |
| 16036 | Laird Bill Oil Company | St Louis, OK 74866 | Oil & Gas Operator | Apr 2026 |
| 16037 | Lake A, LTD. | | Oil Operator | May 1998 |
| 16038 | Lake Country Disposal II LLC | Wilson, OK 73463 | Oil Operator | Apr 2026 |
| 16039 | Lake Country Disposal LLC | Ardmore, OK 73401 | Oil Operator | Oct 2024 |
| 16040 | Lake Crystal Operating LLC | Sugar Land, TX 77496 | Oil & Gas Operator | Jun 2026 |
| 16041 | Lake Energy LLC | Chagrin Falls, OH 44023 | Oil & Gas Operator | Dec 2024 |
| 16042 | Lake Erie Energy Part LLC | Erie, PA 16505-4760 | Oil & Gas Operator | Dec 2012 |
| 16043 | Lake Racourci Gath Sys, LLC | | Oil Operator | May 2004 |
| 16044 | Lake Region Oil Inc | Massillon, OH 44648 | Oil & Gas Operator | Dec 2025 |
| 16045 | Lake Ronel Oil Company | Tyler, TX 75710 | Oil & Gas Operator | Jul 2017 |
| 16046 | Lakehills Production, Inc. | Austin, TX 78701 | Oil & Gas Operator | Jun 2026 |
| 16047 | Lakeland Pipeline Inc | Hominy, OK 74035-1006 | Oil & Gas Operator | Jun 2023 |
| 16048 | Lakeshore Operating, LLC | Wichita, KS 67203 | Oil & Gas Operator | Jun 2026 |
| 16049 | Lakeshore Petroleum Corp. | | Oil & Gas Operator | Dec 1992 |
| 16050 | Lakeside Resources | | Oil & Gas Operator | Mar 1989 |
| 16051 | Lakewood Disposal LLC | Tulsa, OK 74136-1031 | Oil Operator | Aug 2018 |
| 16052 | Lakewood Energy LLC | Dallas, TX 75214 | Oil & Gas Operator | Jun 2026 |
| 16053 | Lakewood Energy Solutions LLC | | Oil Operator | Jun 2016 |
| 16054 | Lakewood Oil Company LLC | Mission Hills, KS 66208-2735 | Oil & Gas Operator | May 2013 |
| 16055 | Lakewood Operating, LTD. | Midland, TX 79702 | Oil & Gas Operator | Jun 2026 |
| 16056 | Lakewood Petroleum | | Oil & Gas Operator | Sep 1993 |
| 16057 | Lakota Energy, LTD. | Paradise, TX 76073 | Oil & Gas Operator | Jun 2026 |
| 16058 | Lakota Oil & Gas | Comanche, OK 73529-9602 | Oil & Gas Operator | May 2014 |
| 16059 | Lakota Partnership | Denver, CO 80202 | Oil Operator | Oct 1990 |
| 16060 | Laloc | Aspermont, TX 79502 | Oil & Gas Operator | Sep 2025 |
| 16061 | Lam Financial Holdings LTD | Greenwood VIllage, CO 80111 | Oil Operator | Mar 2026 |
| 16062 | Lama Energy, L.L.C. | Midland, TX 79710 | Oil & Gas Operator | May 2024 |
| 16063 | Lamamco Drilling Company | Skiatook, OK 74070 | Oil & Gas Operator | Mar 2026 |
| 16064 | Lamar Energy | Nocona, TX 76255 | Oil Operator | Jun 2026 |
| 16065 | Lamar Energy LLC | | Oil & Gas Operator | Apr 2026 |
| 16066 | Lamar Hunt | | Oil & Gas Operator | Oct 2003 |
| 16067 | Lamar Hunt Trust Est Etal | | Oil & Gas Operator | Aug 1996 |
| 16068 | Lamar Hunt Trust Est. | | Oil & Gas Operator | Mar 1978 |
| 16069 | Lamar Matlock | | Oil Operator | Jan 2025 |
| 16070 | Lamar Oil & Gas Co., Inc. | | Oil & Gas Operator | Dec 2021 |
| 16071 | Lamar Oil & Gas Exploration | | Gas Operator | Oct 2013 |
| 16072 | Lamar Oil & Gas, Inc. | Corpus Christ, TX 78413 | Oil & Gas Operator | Jun 2026 |
| 16073 | Lamar Oil Company | Nocona, TX 76255 | Oil & Gas Operator | Oct 2015 |
| 16074 | Lamar Smith | | Oil Operator | Aug 1991 |
| 16075 | Lamarsa Corp. | Cut Bank, MT 59427 | Oil & Gas Operator | Mar 2026 |
| 16076 | Lamay Corporation | Rosenberg, TX 77471 | Oil & Gas Operator | Jun 2026 |
| 16077 | Lamb & Mize | Azle, TX 76020 | Oil & Gas Operator | Jun 2026 |
| 16078 | Lamb Alan L | Oklahoma City, OK 73120-7824 | Oil & Gas Operator | Feb 2020 |
| 16079 | Lamb, James L., Jr. | Austin, TX 78750 | Oil & Gas Operator | Mar 2016 |
| 16080 | Lambda Energy Resources LLC | | Oil & Gas Operator | Apr 2026 |
| 16081 | Lambdin William H | Oklahoma City, OK 73120 | Oil & Gas Operator | Nov 1998 |
| 16082 | Lambeck Petroleum, LLC | Stockdale, TX 78160 | Oil Operator | Jun 2026 |
| 16083 | Lamberd, Clayton | Olathe, KS 66061 | Oil Operator | Oct 2025 |
| 16084 | Lambert Company LLC | Ardmore, OK 73401 | Oil & Gas Operator | Apr 2026 |
| 16085 | Lambert Company The | Healdton, OK 73438-0962 | Oil & Gas Operator | Feb 2023 |
| 16086 | Lambert Oil & Gas LLC | Holdenville, OK 74848 | Oil & Gas Operator | Mar 2026 |
| 16087 | Lamberton Oil Co Inc | Tulsa, OK 74107 | Oil & Gas Operator | May 2013 |
| 16088 | Lamberton W J | Tulsa, OK 74119 | Oil & Gas Operator | Apr 2015 |
| 16089 | Lamco Oil, LLC | Nocona, TX 76255 | Oil & Gas Operator | Jun 2026 |
| 16090 | Lamima Corporation | Ardmore, OK 73401 | Oil Operator | Nov 1994 |
| 16091 | Lamkin Oil Company | Stephens, AR 71764 | Oil Operator | Jan 2025 |
| 16092 | Laml Compaines LLC | Cleveland, OK 74020 | Oil Operator | Apr 2026 |
| 16093 | Lammerts Robert P | Oklahoma City, OK 73102 | Oil & Gas Operator | Jan 2002 |
| 16094 | Lampert Exploration Corporation | Dallas, TX 75206 | Oil & Gas Operator | Mar 2008 |
| 16095 | Lamson Petroleum Corporation | | Oil & Gas Operator | Mar 1993 |
| 16096 | Lamson/Crocker Petroleum Corp. | | Oil & Gas Operator | May 1988 |
| 16097 | Lamson/Onshore Petroleum Corp. | | Oil & Gas Operator | Sep 1985 |
| 16098 | Lan Ma'S Oil And Gas LLC | Sugar Land, TX 77479 | Oil Operator | Dec 2025 |
| 16099 | Lancaster, Randy L. Dba Heritage Oil & Gas | Middlebourne, WV 26149 | Oil & Gas Operator | Dec 2021 |
| 16100 | Lance Exploration Company | Fort Worth, TX 76102 | Oil & Gas Operator | Jul 1994 |