| 1 | K & D Enterprises, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Mar 2008 |
| 2 | K & D Operating Co. A | Gruver, TX 79040 | Oil & Gas Operator | Feb 2019 |
| 3 | K & E Drilling, Inc | Wichita, KS 67202 | Oil & Gas Operator | Jun 2025 |
| 4 | K & E Oil & Gas Co. | Bayfield, CO 81122 | Oil & Gas Operator | Oct 2008 |
| 5 | K & E Petroleum, Inc. | San Antonio, TX 78230 | Oil & Gas Operator | Apr 2012 |
| 6 | K & F Oil Co. | Olney, TX 76374 | Oil & Gas Operator | Dec 2021 |
| 7 | K & K Oil Co. | Corsicana, TX 75109 | Oil & Gas Operator | Oct 2025 |
| 8 | K & K Operating Co. | Rule, TX 79547 | Oil Operator | Dec 2005 |
| 9 | K & L Oil, LLC | Gonzales, TX 78629 | Oil Operator | Oct 2025 |
| 10 | K & M Exploration, 1973-3 LTD. | Abilene, TX 79608 | Oil & Gas Operator | Nov 1997 |
| 11 | K & S Oil & Gas Company, LLC | Kerrville, TX 78028 | Oil & Gas Operator | Oct 2025 |
| 12 | K & W Vanpelt Company | Portage, OH 43451 | Oil & Gas Operator | Oct 2025 |
| 13 | K A Ware Production Co., LLC | Pratt, KS 67124 | Oil Operator | Oct 2025 |
| 14 | K And R Oil Company | Stanton, TX 79782 | Oil & Gas Operator | Aug 2003 |
| 15 | K And R Operating | Kingsbury, TX 78638 | Oil & Gas Operator | Oct 2025 |
| 16 | K Cubed Resources, L.L.C. | Burleson, TX 76028 | Oil & Gas Operator | Oct 2025 |
| 17 | K Energy Inc | Mannford, OK 74044-3023 | Oil & Gas Operator | May 2013 |
| 18 | K M X Corporation Inc. | Pampa, TX 79066 | Oil & Gas Operator | Dec 2001 |
| 19 | K Me Company, LLC | Kilgore, TX 75663 | Oil Operator | Oct 2025 |
| 20 | K Oil Company | Houston, TX 77005 | Oil & Gas Operator | Oct 2025 |
| 21 | K R Well Technology, LLC | Dimmitt, TX 79027 | Oil Operator | Oct 2025 |
| 22 | K&C Pump Truck, LLC | Graham, TX 76450 | Oil & Gas Operator | Dec 2018 |
| 23 | K&M Resources LLC | Artesia, NM 88211 | Oil & Gas Operator | Aug 2025 |
| 24 | K-B Exploration Co. | Houston, TX 77057 | Oil & Gas Operator | Oct 2025 |
| 25 | K-B Oil Company | Dallas, TX 75243 | Oil & Gas Operator | Dec 2020 |
| 26 | K-B Oil Company, LLC | Dallas, TX 75243 | Oil & Gas Operator | Oct 2025 |
| 27 | K-Bar Oil LLC | McPherson, KS 67460 | Oil Operator | Jun 2025 |
| 28 | K-C Oil Co. | Luling, TX 78648 | Oil & Gas Operator | Jan 2013 |
| 29 | K-D Operations | N Richlnd HLS, TX 76182 | Oil Operator | Oct 2025 |
| 30 | K-M Oil Company, Inc. | Coleman, TX 76834 | Oil & Gas Operator | Oct 2025 |
| 31 | K. D. Operating LLC. | Wichita Falls, TX 76308 | Oil Operator | Oct 2025 |
| 32 | K. F. Operating Company | Burkburnett, TX 76354 | Oil & Gas Operator | Mar 2008 |
| 33 | K. O. C. Corporation | Sherman, TX 75091 | Oil & Gas Operator | Oct 2025 |
| 34 | K. Stewart Petroleum Corporation | Oklahoma City, OK 73103 | Oil & Gas Operator | Jun 2001 |
| 35 | K.A. Barnes Oil & Gas Oper, LLC | Somerset, TX 78069 | Oil Operator | Oct 2025 |
| 36 | K.M.A. Operating, Inc. | Graham, TX 76450 | Oil & Gas Operator | Aug 2003 |
| 37 | K.W.A., Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 38 | K2 Petroleum, Inc. | San Antonio, TX 78239 | Oil & Gas Operator | Oct 2025 |
| 39 | K3 Productions LLC | Houston, TX 77269 | Oil & Gas Operator | Oct 2025 |
| 40 | Ka Energy Op Co. LLC | Oakland, CA 94605 | Oil & Gas Operator | Oct 2021 |
| 41 | Kabco Oil & Gas Company | Longview, TX 75604 | Oil & Gas Operator | Jun 2018 |
| 42 | Kachina Oil & Gas Inc. | Austin, TX 78766 | Oil & Gas Operator | Jul 2002 |
| 43 | Kadane Corporation | Dallas, TX 75205 | Oil & Gas Operator | Oct 2025 |
| 44 | Kadane Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 1998 |
| 45 | Kahlenberg Oil And Gas LLC | Conroe, TX 77304 | Oil Operator | Oct 2025 |
| 46 | Kain Petroleum Company | Pearsall, TX 78061 | Gas Operator | May 2011 |
| 47 | Kain Petroleum, LLC | Pearsall, TX 78061 | Oil & Gas Operator | Oct 2025 |
| 48 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | Oct 2025 |
| 49 | Kala Oil Company | Sundown, TX 79372 | Oil & Gas Operator | Oct 2025 |
| 50 | Kalda Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 1994 |
| 51 | Kaler Energy Corp. | Boerne, TX 78006 | Oil & Gas Operator | Oct 2025 |
| 52 | Kaler Oil Company | Gainesville, TX 76240 | Oil & Gas Operator | Dec 2024 |
| 53 | Kallina, Carlton J. | Houston, TX 77269 | Gas Operator | Oct 2025 |
| 54 | Kalos Corporation | Tyler, TX 75701 | Oil & Gas Operator | Oct 2025 |
| 55 | Kamlok Oil & Gas, Inc. | Houston, TX 77240 | Oil & Gas Operator | Jun 1996 |
| 56 | Kampresco Energy, LLC | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 57 | Kana Resources, Inc. | Dallas, TX 75243 | Oil & Gas Operator | Aug 2003 |
| 58 | Kansas Oil & Gas Corporation | Woodland HLS, CA 91367 | Oil & Gas Operator | Feb 2001 |
| 59 | Kar Oil Company | Iowa Park, TX 76367 | Oil & Gas Operator | Oct 2025 |
| 60 | Karbuhn Oil Company | Tomball, TX 77375 | Oil & Gas Operator | Oct 2025 |
| 61 | Karenco Energy, Incorporated | Seguin, TX 78155 | Oil & Gas Operator | Oct 1997 |
| 62 | Karico GP, LLC | Midland, TX 79705 | Oil & Gas Operator | Oct 2025 |
| 63 | Karis Resources, LLC | Tyler, TX 75707 | Oil & Gas Operator | Feb 2019 |
| 64 | Karper Company, The | Graham, TX 76450 | Oil & Gas Operator | Feb 2003 |
| 65 | Karper Oil & Gas Corporation | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 66 | Karst Incorporated | Fort Worth, TX 76116 | Oil Operator | Oct 2025 |
| 67 | Kas Productions | La Veta, CO 81055 | Oil Operator | Mar 2008 |
| 68 | Kasan Corp. | Pharr, TX 78577 | Oil & Gas Operator | Sep 1995 |
| 69 | Kasle Energy Inc. | Cross Plains, TX 76443 | Oil & Gas Operator | Mar 2017 |
| 70 | Kastman Oil Company | Lubbock, TX 79408 | Oil & Gas Operator | Nov 2012 |
| 71 | Kastman Oil Company, LLC | Lubbock, TX 79408 | Oil Operator | Oct 2025 |
| 72 | Kat Energy Corporation | Amarillo, TX 79105 | Gas Operator | Sep 2001 |
| 73 | Kat Energy, LTD. | Amarillo, TX 79120 | Gas Operator | Jun 2020 |
| 74 | Kathler Oil Interests | Frisco, TX 75034 | Oil & Gas Operator | Oct 2025 |
| 75 | Kato Operating Company | Bristow, OK 74010 | Oil & Gas Operator | Mar 2015 |
| 76 | Katsco Energy, Inc. | Round Rock, TX 78664 | Oil & Gas Operator | Oct 2025 |
| 77 | Katy Resources Etx, LLC | Shreveport, LA 71101 | Oil & Gas Operator | Mar 2011 |
| 78 | Katy Resources LLC | Arlington, TX 76016 | Oil & Gas Operator | Oct 2025 |
| 79 | Katz Oil Co. | San Antonio, TX 78218 | Oil & Gas Operator | Dec 2002 |
| 80 | Kaye Poth Oil Corp. | Seguin, TX 78155 | Oil & Gas Operator | May 1998 |
| 81 | Kayuga Co. | Tulsa, OK 74133 | Oil & Gas Operator | Oct 2025 |
| 82 | KC Resources Inc | Snowmass VLG., CO 81615 | Oil & Gas Operator | Jun 2025 |
| 83 | KCM Management, Inc. | Dallas, TX 75230 | Oil & Gas Operator | Oct 2014 |
| 84 | KCR Energy, L.L.C. | Fate, TX 75132 | Oil Operator | Oct 2025 |
| 85 | KCS Medallion Resources, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Nov 2018 |
| 86 | KCS Resources LLC | Houston, TX 77027 | Oil & Gas Operator | Feb 2017 |
| 87 | KCS Resources, Inc. | Houston, TX 77002 | Oil & Gas Operator | Feb 2009 |
| 88 | KD Energy, LLC | Houston, TX 77056 | Oil & Gas Operator | Oct 2025 |
| 89 | KDM Operating, LLC | The Woodlands, TX 77380 | Oil Operator | Oct 2025 |
| 90 | KDM Production Co | Ozona, TX 76943 | Oil & Gas Operator | Oct 2025 |
| 91 | Keahey Exploration, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Mar 2002 |
| 92 | Keating Energy, Inc. | Ambler, PA 19002 | Oil & Gas Operator | Oct 2025 |
| 93 | Kebo Oil & Gas, Inc. | Portland, TX 78374 | Oil & Gas Operator | Oct 2025 |
| 94 | Kec Enterprises, Inc. | Springtown, TX 76082 | Oil & Gas Operator | Oct 2025 |
| 95 | Keeley Oil, L.L.C. | Dallas, TX 75225 | Oil Operator | Oct 2025 |
| 96 | Keen Operating Company, Inc. | Austin, TX 78705 | Oil & Gas Operator | Aug 2001 |
| 97 | Keene, Roy J. Jr. | Sugar Land, TX 77498 | Oil & Gas Operator | Jun 2016 |
| 98 | Keft Oil Company | Pleasanton, TX 78064 | Oil & Gas Operator | Feb 2003 |
| 99 | Keirus, Inc. | Wichita Falls, TX 76310 | Oil & Gas Operator | Oct 2025 |
| 100 | Keisling, H. N. | Pampa, TX 79065 | Oil & Gas Operator | Aug 2015 |