| 5901 | Kremco Oil LLC | Wichita Falls, TX 76308 | Oil Operator | Apr 2024 |
| 5902 | Krescent Energy Company, LLC | Houston, TX 77056 | Oil & Gas Operator | Apr 2013 |
| 5903 | KRF Production Company LLC | Austin, TX 78746 | Oil & Gas Operator | Apr 2024 |
| 5904 | Kriken Oil & Gas | Corpus Chrsti, TX 78426 | Oil & Gas Operator | Jul 2005 |
| 5905 | Kriken Oil & Gas, Inc. | Corpus Chrsti, TX 78426 | Oil & Gas Operator | Apr 2024 |
| 5906 | Krisco Oil Co. | Kermit, TX 79745 | Oil Operator | Jul 2022 |
| 5907 | Kristen Oil And Gas, Inc. | Edna, TX 77957 | Oil & Gas Operator | Apr 2024 |
| 5908 | Kriti Exploration, Inc. | Houston, TX 77002 | Oil & Gas Operator | Oct 2012 |
| 5909 | Kriti Te Energy, Inc | Houston, TX 77079 | Oil & Gas Operator | Oct 2017 |
| 5910 | Krocan Energy Corporation | Bowling Green, KY 42102 | Oil & Gas Operator | Apr 2024 |
| 5911 | Krog Partners, LLC | Kilgore, TX 75663 | Oil Operator | Apr 2024 |
| 5912 | Kroh Operating LLC | Fort Worth, TX 76114 | Oil & Gas Operator | Apr 2024 |
| 5913 | Krot Oil Co. | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2024 |
| 5914 | KRS Oil Company | Frisco, TX 75034 | Oil & Gas Operator | Apr 2020 |
| 5915 | Ksabe Energy Partners, LLC | Oklahoma City, OK 73106 | Oil Operator | Apr 2024 |
| 5916 | Kstone Energy, LLC | Oklahoma City, OK 73106 | Oil Operator | Apr 2024 |
| 5917 | KT Operating Company LLC | Dallas, TX 75231 | Oil & Gas Operator | Feb 2010 |
| 5918 | KTC Oil Enterprises, LLC | Dallas, TX 75247 | Oil & Gas Operator | Apr 2024 |
| 5919 | KTP Energy, Inc. | Denver, CO 80226 | Oil & Gas Operator | Aug 2019 |
| 5920 | Kuehne Oil Company | Dallas, TX 75201 | Oil & Gas Operator | Aug 2003 |
| 5921 | Kuhn Oil Co Inc | Timber Lake, SD 57656 | Oil Operator | Dec 2022 |
| 5922 | Kukui Operating Company | Ignacio, CO 81137 | Oil & Gas Operator | May 2013 |
| 5923 | Kunu Energy LLC | Wichita Falls, TX 76308 | Oil Operator | Apr 2024 |
| 5924 | Kuran Resources | Wichita Falls, TX 76305 | Oil Operator | Apr 2024 |
| 5925 | Kurz Production Co | Somerset, TX 78069 | Oil & Gas Operator | May 2012 |
| 5926 | Kuykendall, IValene Estate | Electra, TX 76360 | Oil & Gas Operator | Dec 1998 |
| 5927 | Kuykendall, M. C. | Electra, TX 76360 | Oil & Gas Operator | Apr 1995 |
| 5928 | Kuykendall, M.C., Estate | Electra, TX 76360 | Oil & Gas Operator | Aug 2003 |
| 5929 | KVL Operating, LLC | Midland, TX 79708 | Oil & Gas Operator | Apr 2024 |
| 5930 | KWB Oil Property Management Inc | Tulsa, OK 74103 | Oil & Gas Operator | Jan 2024 |
| 5931 | KWS Oil & Gas, LLC | El Campo, TX 77437 | Oil & Gas Operator | Apr 2024 |
| 5932 | Kynge Energy Investments LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2024 |
| 5933 | Kynosa Inc. | Levelland, TX 79336 | Oil & Gas Operator | Jun 1998 |
| 5934 | KZ Global Energy, LLC | Houston, TX 77042 | Oil & Gas Operator | Apr 2024 |
| 5935 | L & B Oil And Gas Equipment, LLC | Palmhurst, TX 78573 | Oil & Gas Operator | Apr 2024 |
| 5936 | L & B Production | Big Lake, TX 76932 | Oil & Gas Operator | Apr 2024 |
| 5937 | L & D, Inc. | San Angelo, TX 76906 | Oil & Gas Operator | May 2019 |
| 5938 | L & F Drilling Co., Inc. (1) | Corpus Chrsti, TX 78479 | Oil & Gas Operator | Apr 2024 |
| 5939 | L & G Oil Company | Longview, TX 75606 | Oil & Gas Operator | Aug 2000 |
| 5940 | L & G Operating, Inc. | Borger, TX 79008 | Oil & Gas Operator | Aug 2021 |
| 5941 | L & H Oil Company | Wichita Falls, TX 76301 | Oil & Gas Operator | Oct 1999 |
| 5942 | L & J Exploration, LLC | Carrizo SPGS, TX 78834 | Oil & Gas Operator | Apr 2024 |
| 5943 | L & J Oil | Gainesville, TX 76240 | Oil & Gas Operator | Nov 2000 |
| 5944 | L & J Oil Co. | Borger, TX 79007 | Oil & Gas Operator | Apr 1999 |
| 5945 | L & L Resources, Inc. | Hays, KS 67601 | Oil Operator | Mar 1986 |
| 5946 | L & M Operating, Inc. | Big Lake, TX 76932 | Oil & Gas Operator | Apr 2024 |
| 5947 | L & R Drilling Company | Belle Fourche, SD 57717 | Oil & Gas Operator | Dec 1999 |
| 5948 | L & R Energy Corporation | Spearman, TX 79081 | Oil & Gas Operator | Nov 2014 |
| 5949 | L & R Petroleum | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2024 |
| 5950 | L & S Drilling, Inc. | Kamay, TX 76369 | Oil & Gas Operator | Mar 2016 |
| 5951 | L & T Oil Co., Inc. | Midland, TX 79705 | Oil & Gas Operator | Apr 2024 |
| 5952 | L & W Operators | Pampa, TX 79066 | Oil & Gas Operator | Jan 2018 |
| 5953 | L A Productions | Sunset, TX 76270 | Oil & Gas Operator | Apr 2024 |
| 5954 | L And C Leasing, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Mar 2019 |
| 5955 | L And L Production Company | Skellytown, TX 79080 | Oil & Gas Operator | Sep 1996 |
| 5956 | L L & M Properties, Inc. | Burkburnett, TX 76354 | Oil & Gas Operator | Aug 2004 |
| 5957 | L R Operating Co. | Graford, TX 76449 | Oil & Gas Operator | Apr 2024 |
| 5958 | L-83, Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 1995 |
| 5959 | L-R Production | Olney, TX 76374 | Oil & Gas Operator | Apr 2024 |
| 5960 | L-Texx Petroleum, LP | Arlington, TX 76013 | Oil & Gas Operator | Apr 2024 |
| 5961 | L. S. K. L. Oil Co. | Buda, TX 78610 | Oil & Gas Operator | Apr 2024 |
| 5962 | L.C.S. Production Company | Abilene, TX 79608 | Oil & Gas Operator | Apr 2024 |
| 5963 | L.J. Resources, LLC | Graham, TX 76450 | Gas Operator | Apr 2024 |
| 5964 | L.J.M. Corporation | Houston, TX 77025 | Oil & Gas Operator | Jun 2012 |
| 5965 | L.L. Oil Company | Freer, TX 78357 | Oil & Gas Operator | Apr 2024 |
| 5966 | L.O.G. Energy Exploration, LTD. | Laredo, TX 78041 | Oil & Gas Operator | Apr 2024 |
| 5967 | L.T.D. Explorations Inc. | Alice, TX 78333 | Oil & Gas Operator | Apr 2024 |
| 5968 | L2SG Production, LLC | Nocona, TX 76255 | Oil Operator | May 2020 |
| 5969 | L7 Energy LLC | Seminole, TX 79360 | Oil Operator | Apr 2024 |
| 5970 | La Campana, Inc. | Port Aransas, TX 78373 | Oil & Gas Operator | Apr 2024 |
| 5971 | La Jolla Oil & Gas, Inc. | Frisco, TX 75034 | Oil & Gas Operator | Apr 2024 |
| 5972 | La Mar, Paul W. | Nocona, TX 76255 | Oil & Gas Operator | May 1995 |
| 5973 | La Parrita Oil & Gas, Inc. | Rosenberg, TX 77471 | Oil & Gas Operator | May 2002 |
| 5974 | La Plata Gathering System Inc | Dallas, TX 75206 | Gas Operator | Nov 2023 |
| 5975 | La Roca Energy, LP | Dallas, TX 75207 | Oil & Gas Operator | Apr 2024 |
| 5976 | La Ronya Oil & Gas | George West, TX 78022 | Gas Operator | Apr 2024 |
| 5977 | La Sara Operating Company, LLC | Houston, TX 77056 | Oil & Gas Operator | Dec 2015 |
| 5978 | La Vernia Oil | La Vernia, TX 78121 | Oil Operator | Apr 2024 |
| 5979 | La Vernia Oil Co. | La Vernia, TX 78121 | Oil & Gas Operator | Aug 2003 |
| 5980 | La VIda Energy Corporation | Midland, TX 79702 | Oil & Gas Operator | Apr 1993 |
| 5981 | Lace Operating | Fort Worth, TX 76114 | Oil & Gas Operator | Jun 1997 |
| 5982 | Lackey, William H. Oil And Gas | Shawnee, OK 74804 | Oil & Gas Operator | Apr 2024 |
| 5983 | Lacy 03, LLC | Midland, TX 79702 | Oil & Gas Operator | Apr 2024 |
| 5984 | Lacy Operations, LTD. | Longview, TX 75606 | Oil & Gas Operator | Oct 2012 |
| 5985 | Lacy, F. B. Inc. | Houston, TX 77055 | Oil & Gas Operator | Sep 1997 |
| 5986 | Lacy, J. W., Jr. | Midland, TX 79702 | Oil & Gas Operator | Dec 2007 |
| 5987 | Lacy, R., Inc. | Longview, TX 75606 | Oil & Gas Operator | Jan 2002 |
| 5988 | Ladd LLC | El Reno, OK 73036-0716 | Oil & Gas Operator | Nov 2018 |
| 5989 | Ladd Oil & Gas Corporation | Midland, TX 79711 | Oil & Gas Operator | Dec 2021 |
| 5990 | Ladd Operating Company | Midland, TX 79711 | Oil & Gas Operator | Mar 2008 |
| 5991 | Ladd Petroleum Corp. | Denver, CO 80202 | Oil & Gas Operator | Oct 2004 |
| 5992 | Laddex, LTD. | Amarillo, TX 79102 | Oil & Gas Operator | Apr 2024 |
| 5993 | Lafonda Energy LLC | Vernon, TX 76384 | Oil Operator | Apr 2024 |
| 5994 | Lagarto Company, The | Fredericksbrg, TX 78624 | Oil & Gas Operator | Apr 1995 |
| 5995 | Lagerquist, Walter G., Jr. | San Antonio, TX 78209 | Oil & Gas Operator | Sep 2005 |
| 5996 | Laguna Oil & Gas Corp. | Weesatche, TX 77993 | Oil & Gas Operator | Apr 2024 |
| 5997 | Laguna Petroleum Company | Casper, WY 82601 | Oil & Gas Operator | Dec 1982 |
| 5998 | Laguna Petroleum Corporation | Houston, TX 77046 | Oil & Gas Operator | Apr 2024 |
| 5999 | Lainco Well Service | Hamlin, TX 79520 | Oil & Gas Operator | Dec 1996 |
| 6000 | Lainco Well Service, Inc. | Hamlin, TX 79520 | Oil & Gas Operator | Aug 2011 |