| 15101 | K & A Oil, A General Partnership | Longton, KS 67352 | Oil Operator | Jul 2024 |
| 15102 | K & D Energy | | Oil Operator | Dec 2018 |
| 15103 | K & D Enterprises, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Mar 2008 |
| 15104 | K & D Oil Compan | | Oil Operator | Apr 1994 |
| 15105 | K & D Operating Co. A | Gruver, TX 79040 | Oil & Gas Operator | Feb 2019 |
| 15106 | K & E Drilling I | | Oil & Gas Operator | Sep 1995 |
| 15107 | K & E Drilling, Inc | Wichita, KS 67202 | Oil & Gas Operator | Jul 2024 |
| 15108 | K & E Field Services Inc | Bartlesville, OK 74005-0518 | Oil & Gas Operator | Jun 2016 |
| 15109 | K & E Oil & Gas Co. | Bayfield, CO 81122 | Oil & Gas Operator | Oct 2008 |
| 15110 | K & E Petroleum | | Oil & Gas Operator | Jan 1995 |
| 15111 | K & E Petroleum, Inc. | San Antonio, TX 78230 | Oil & Gas Operator | Apr 2012 |
| 15112 | K & F Oil Co. | Olney, TX 76374 | Oil & Gas Operator | Dec 2021 |
| 15113 | K & G Oil Incorp | | Oil Operator | Mar 1988 |
| 15114 | K & G Production | | Oil Operator | Jul 2024 |
| 15115 | K & H Oil Company | Oklahoma City, OK 73112 | Oil & Gas Operator | Dec 1995 |
| 15116 | K & J Oil Co. Inc. | | Oil & Gas Operator | Sep 2024 |
| 15117 | K & K Oil | Chase, KS 67524 | Oil & Gas Operator | Oct 2019 |
| 15118 | K & K Oil Co. | Corsicana, TX 75109 | Oil & Gas Operator | Nov 2024 |
| 15119 | K & K Operating Co. | Rule, TX 79547 | Oil Operator | Dec 2005 |
| 15120 | K & L Gas & Oil | Homer City, PA 15748-6033 | Gas Operator | Dec 2007 |
| 15121 | K & L Gas & Oil Inc | Homer City, PA 15748-6033 | Oil & Gas Operator | Dec 2018 |
| 15122 | K & L Oil Compan | | Oil Operator | Dec 1993 |
| 15123 | K & L Oil, LLC | Gonzales, TX 78629 | Oil Operator | Nov 2024 |
| 15124 | K & L Operating LLC | Cushing, OK 74023-6189 | Oil & Gas Operator | Sep 2024 |
| 15125 | K & L Tank Truck | | Oil Operator | Aug 1987 |
| 15126 | K & L Tank Truck Service, Inc. | Garden City, KS 67846 | Oil Operator | Apr 2023 |
| 15127 | K & M Exploration, 1973-3 LTD. | Abilene, TX 79608 | Oil & Gas Operator | Nov 1997 |
| 15128 | K & M Oil Company LLC | Hennessey, OK 73742 | Oil & Gas Operator | Aug 2024 |
| 15129 | K & N Petroleum, Inc. | Great Bend, KS 67530 | Oil Operator | Jul 2024 |
| 15130 | K & R Oil & Gas | Roswell, NM 88201 | Oil Operator | Jul 1995 |
| 15131 | K & S Oil & Gas Company, LLC | Kerrville, TX 78028 | Oil & Gas Operator | Nov 2024 |
| 15132 | K & S Rentals | | Oil & Gas Operator | May 2013 |
| 15133 | K & W Oil Company | MT Carmel, IL 62830 | Oil & Gas Operator | May 2013 |
| 15134 | K & W Vanpelt Company | Portage, OH 43451 | Oil & Gas Operator | Nov 2024 |
| 15135 | K A Brown Oil & Gas LLC | Sardis, OH 43946 | Oil & Gas Operator | Dec 2023 |
| 15136 | K A Ware Production Co., LLC | Pratt, KS 67124 | Oil Operator | Nov 2024 |
| 15137 | K And R Oil Company | Stanton, TX 79782 | Oil & Gas Operator | Aug 2003 |
| 15138 | K And R Operating | Kingsbury, TX 78638 | Oil & Gas Operator | Nov 2024 |
| 15139 | K C Crude Incorp | | Oil & Gas Operator | Mar 1994 |
| 15140 | K C Development | | Oil & Gas Operator | Dec 1996 |
| 15141 | K C Resources In | | Oil & Gas Operator | Oct 1993 |
| 15142 | K C S Michigan Resources Inc | | Oil & Gas Operator | Mar 2004 |
| 15143 | K Cubed Resources, L.L.C. | Burleson, TX 76028 | Oil & Gas Operator | Nov 2024 |
| 15144 | K D S Resources Co | Thomas, OK 73669 | Oil & Gas Operator | Jul 2024 |
| 15145 | K Energy Inc | Mannford, OK 74044-3023 | Oil & Gas Operator | May 2013 |
| 15146 | K G Operating | Hennessey, OK 73742 | Oil & Gas Operator | May 1999 |
| 15147 | K L Production Services LLC | Duncan, OK 73533-3409 | Oil & Gas Operator | Nov 2019 |
| 15148 | K M Gas Company | Oklahoma City, OK 73125 | Oil & Gas Operator | Dec 2014 |
| 15149 | K M X Corporation Inc. | Pampa, TX 79066 | Oil & Gas Operator | Dec 2001 |
| 15150 | K Me Company, LLC | Kilgore, TX 75663 | Oil Operator | Nov 2024 |
| 15151 | K N Energy Inc | Lakewood, CO 80228 | Oil & Gas Operator | Nov 2000 |
| 15152 | K N Processing | | Gas Operator | Mar 1999 |
| 15153 | K N Trading Inc | Lakewood, CO 80228 | Oil Operator | Aug 2024 |
| 15154 | K O G Production LLC | Freedom, OK 73842 | Oil & Gas Operator | Sep 2024 |
| 15155 | K Oil Company | Houston, TX 77005 | Oil & Gas Operator | Nov 2024 |
| 15156 | K P Kauffman Company Inc | Denver, CO 80203 | Oil & Gas Operator | Sep 2024 |
| 15157 | K Phil Fleetwood Oil Properties LLC | Marlow, OK 73055 | Oil & Gas Operator | Sep 2024 |
| 15158 | K R M Petroleum | | Oil & Gas Operator | Jan 1990 |
| 15159 | K R S Expl., Inc. | | Oil Operator | Oct 2020 |
| 15160 | K R Well Technology, LLC | Dimmitt, TX 79027 | Oil Operator | Nov 2024 |
| 15161 | K S & S Oil Company Inc | Terral, TX 73569-5056 | Oil Operator | Sep 2024 |
| 15162 | K S Oil Company Inc | Norman, OK 73072-7480 | Oil & Gas Operator | Sep 2024 |
| 15163 | K W B Oil Property MGMT Inc | | Oil & Gas Operator | Jun 2000 |
| 15164 | K W Oil Well Service. Inc. | Chanute, KS 66720 | Oil Operator | Apr 2017 |
| 15165 | K Wilson Enterprises Inc. | | Oil Operator | Jul 2024 |
| 15166 | K&C Pump Truck, LLC | Graham, TX 76450 | Oil & Gas Operator | Dec 2018 |
| 15167 | K&M Resources LLC | Artesia, NM 88211 | Oil & Gas Operator | Sep 2024 |
| 15168 | K-3 Energy Corpo | | Oil Operator | May 1988 |
| 15169 | K-B Exploration Co. | Houston, TX 77057 | Oil & Gas Operator | Nov 2024 |
| 15170 | K-B Oil Company | Dallas, TX 75243 | Oil & Gas Operator | Dec 2020 |
| 15171 | K-B Oil Company, LLC | Dallas, TX 75243 | Oil & Gas Operator | Nov 2024 |
| 15172 | K-Bar Oil LLC | McPherson, KS 67460 | Oil Operator | Jul 2024 |
| 15173 | K-C Oil Co. | Luling, TX 78648 | Oil & Gas Operator | Jan 2013 |
| 15174 | K-D Operations | N Richlnd HLS, TX 76182 | Oil Operator | Nov 2024 |
| 15175 | K-M Oil Company, Inc. | Coleman, TX 76834 | Oil & Gas Operator | Nov 2024 |
| 15176 | K-Tel Petroleum | Englewood, CO 80111-4628 | Oil & Gas Operator | Sep 2007 |
| 15177 | K-Von Enterprises Inc | Tecumseh, OK 74873 | Oil & Gas Operator | Jan 1994 |
| 15178 | K-W Oil - Evans | | Oil Operator | Jan 1994 |
| 15179 | K. C. Crude, Inc. | Lenexa, KS 66215 | Oil & Gas Operator | Dec 2000 |
| 15180 | K. D. Lankford, Jr & L&N DRLG Co | | Gas Operator | Dec 2010 |
| 15181 | K. D. Lankford, Jr., Et Al | | Gas Operator | Dec 2010 |
| 15182 | K. D. Operating LLC. | Wichita Falls, TX 76308 | Oil Operator | Nov 2024 |
| 15183 | K. F. Operating Company | Burkburnett, TX 76354 | Oil & Gas Operator | Mar 2008 |
| 15184 | K. G. H. Enterprises | | Oil Operator | Dec 2003 |
| 15185 | K. J. Enterprises LLC | | Oil Operator | Dec 2001 |
| 15186 | K. O. C. Corporation | Sherman, TX 75091 | Oil & Gas Operator | Nov 2024 |
| 15187 | K. Petroleum, Inc. | Gahanna, OH 43230 | Oil & Gas Operator | Sep 2024 |
| 15188 | K. Stewart Petroleum Corporation | Oklahoma City, OK 73103 | Oil & Gas Operator | Jun 2001 |
| 15189 | K.A. Barnes Oil & Gas Oper, LLC | Somerset, TX 78069 | Oil Operator | Nov 2024 |
| 15190 | K.C. Development, Inc. | Marion, KS 66861 | Oil Operator | Mar 2009 |
| 15191 | K.C. Energy | Kansas City, MO 64111 | Oil Operator | Apr 1986 |
| 15192 | K.C. Operations | | Oil Operator | Jul 2024 |
| 15193 | K.E. Snyder Co., LLC | Hamilton, KS 66853 | Oil Operator | Jul 2024 |
| 15194 | K.J.S. Oil | | Oil & Gas Operator | Jul 2024 |
| 15195 | K.M.A. Operating, Inc. | Graham, TX 76450 | Oil & Gas Operator | Aug 2003 |
| 15196 | K.W.A., Inc. | Midland, TX 79702 | Oil & Gas Operator | Nov 2024 |
| 15197 | K.W.S. Oil Development | Chanute, KS 66720 | Oil Operator | May 2004 |
| 15198 | K2 America Corporation | Calgary, AB T3P 3S8 | Oil & Gas Operator | Nov 2017 |
| 15199 | K2 Petroleum, Inc. | San Antonio, TX 78239 | Oil & Gas Operator | Nov 2024 |
| 15200 | K3 Oil & Gas Operating Company | Spring, TX 77383 | Oil & Gas Operator | Sep 2024 |