| 101 | Hilltop Exploration, Inc. | Sedan, KS 67361 | Oil Operator | Jan 2000 |
| 102 | Horton, Jack | Independence, KS 67301 | Oil & Gas Operator | Aug 2015 |
| 103 | Horton, John | Sedan, KS 67361 | Oil & Gas Operator | Sep 2025 |
| 104 | HRL Oilfields In | | Oil Operator | Jun 1998 |
| 105 | Hummingbird Oil, LLC | Sedan, KS 67361 | Oil Operator | Sep 2025 |
| 106 | Intergy, Inc. | Lomita, CA 90717 | Oil Operator | Jun 1997 |
| 107 | J & R Oil | Chanute, KS 66720 | Oil & Gas Operator | Oct 2019 |
| 108 | J. C. Oil Company | Odessa, TX 79766 | Oil & Gas Operator | Mar 2015 |
| 109 | J.P. Oil Company, Inc. | Midland, TX 79702 | Oil & Gas Operator | Feb 2026 |
| 110 | Jaguar Petroleum | | Oil Operator | Jul 1994 |
| 111 | Jas Oil Company | Winfield, KS 67156 | Oil & Gas Operator | Dec 1995 |
| 112 | Jet Drilling Cor | | Oil Operator | Oct 1995 |
| 113 | Jim Snyder, Inc. | Hamilton, KS 66853 | Oil Operator | Sep 2025 |
| 114 | John M. Denman Oil Co., Inc. | Houston, TX 77251 | Oil Operator | Dec 2009 |
| 115 | Jones & Sons Wel | | Oil Operator | Feb 1990 |
| 116 | Jones And Buck Development LLC | Sedan, KS 67361 | Oil & Gas Operator | Dec 2025 |
| 117 | Jones Lee R Jr O | | Oil & Gas Operator | Aug 1995 |
| 118 | Jones Oil Exploration, LLC | Sedan, KS 67361 | Oil & Gas Operator | Sep 2025 |
| 119 | Judy Company Inc | Kansas City, KS 66111 | Oil & Gas Operator | May 2013 |
| 120 | K & A Oil, A General Partnership | Longton, KS 67352 | Oil Operator | Sep 2025 |
| 121 | K C Crude Incorp | | Oil & Gas Operator | Mar 1994 |
| 122 | K.B. Oil & Gas | | Oil & Gas Operator | Dec 2025 |
| 123 | Kanmap Incorpora | | Oil & Gas Operator | Dec 1995 |
| 124 | Kansas Energy Company, L.L.C. | Sedan, KS 67361 | Oil & Gas Operator | Sep 2025 |
| 125 | Kansas MB Project, LLC | Skiatook, OK 74070 | Oil & Gas Operator | Sep 2024 |
| 126 | Kansas Operating Co., Inc. | Sedan, KS 67361 | Gas Operator | Jan 2004 |
| 127 | Keen Oil Co | | Oil & Gas Operator | Aug 2025 |
| 128 | Kelt Energy Inco | | Oil & Gas Operator | Sep 1995 |
| 129 | Kelt Energy, Inc. | Independence, KS 67301 | Oil & Gas Operator | Dec 2003 |
| 130 | Kewanee Oil Comp | | Oil & Gas Operator | Nov 1996 |
| 131 | Kirkpatrick | Longton, KS 67352 | Oil Operator | Jun 2000 |
| 132 | Kiska Oil Compan | | Oil & Gas Operator | Oct 1989 |
| 133 | Kiska Oil Company | Tulsa, OK 74114 | Oil & Gas Operator | Jan 2019 |
| 134 | Kiwanda Resc Inc | | Oil & Gas Operator | Aug 1993 |
| 135 | Kloberdanz Paul E | Oklahoma City, OK 73157 | Oil & Gas Operator | Aug 2021 |
| 136 | Kodiak Energy LLC | Pineville, MO 64856 | Oil Operator | Dec 2019 |
| 137 | Kodiak Oil Co. | Stockton, MO 65785 | Oil Operator | May 1996 |
| 138 | KPR Incorporated | | Oil & Gas Operator | Nov 1988 |
| 139 | L & H Energy Inc | Cherryvale, KS 67335 | Oil & Gas Operator | Sep 2019 |
| 140 | L H Energy Incor | | Oil Operator | Dec 1991 |
| 141 | Landes Explorati | | Oil Operator | Apr 1995 |
| 142 | Landowner | Honolulu, HI | Oil & Gas Operator | Dec 2008 |
| 143 | Layne Energy Operating, LLC | Kansas City, KS 66106 | Oil & Gas Operator | Feb 2025 |
| 144 | Leblanc, Michael A And Mary Kaye | Sedan, KS 67361 | Oil Operator | Aug 2025 |
| 145 | Legacy Petroleum LLC | Tulsa, OK 74135 | Oil & Gas Operator | Apr 2025 |
| 146 | Legrand, Buck | Sedan, KS 67361 | Oil Operator | Jun 1994 |
| 147 | Leonard, Daniel M. | Fort Worth, TX 76101 | Oil & Gas Operator | Nov 2001 |
| 148 | Lewis Energy LLC | Tulsa, OK 74159 | Oil Operator | Nov 2025 |
| 149 | Little Chief Energy Corporation | Independence, KS 67301 | Oil Operator | Nov 2025 |
| 150 | Lone Wolf Oil & Gas Co., LLC | Moline, KS 67353 | Oil & Gas Operator | Sep 2025 |
| 151 | Long And Ware Oil, A General Partnership | Pawhuska, OK 74056 | Oil Operator | Jan 2021 |
| 152 | Loyd, John H. | Warrensburg, MO 64903 | Oil Operator | Aug 2000 |
| 153 | LR Energy, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Sep 2025 |
| 154 | M & M Oil Company | Monahans, TX 79756 | Oil & Gas Operator | Sep 2025 |
| 155 | Major Oil Compan | | Oil Operator | Mar 1988 |
| 156 | Marco Oil Compan | | Oil & Gas Operator | Aug 1992 |
| 157 | Marco Oil Company LLC | Bartlesville, OK 74005 | Oil & Gas Operator | Nov 2025 |
| 158 | Martindale Enter | | Oil & Gas Operator | Oct 1996 |
| 159 | Matador Exploration, Inc. | Sedan, KS 67361 | Oil Operator | Apr 2001 |
| 160 | Matador, Inc. | Sedan, KS 67361 | Oil Operator | Aug 2025 |
| 161 | MC C Oil Co Inc | Sedan, KS 67361 | Oil Operator | Apr 2016 |
| 162 | McCann Drilling | | Oil & Gas Operator | Oct 1996 |
| 163 | McCann Drilling, Inc. | Bartlesville, OK 74003 | Oil Operator | Mar 2011 |
| 164 | McCann Mark Wind | | Oil & Gas Operator | Dec 1994 |
| 165 | McCann Petroleum, Inc. | Sedan, KS 67361 | Oil & Gas Operator | Jul 1998 |
| 166 | McCarty Francis | | Oil Operator | Sep 1993 |
| 167 | McCorkle, Frank R. & Kathleen A. | Sedan, KS 67361 | Oil Operator | Oct 2009 |
| 168 | McLester Oil & G | | Oil & Gas Operator | Jun 1992 |
| 169 | McMillan, David | FT. Worth, TX 76107 | Oil Operator | Aug 2001 |
| 170 | McMillan, L.L.C. | Sedan, KS 67361 | Oil Operator | Dec 2019 |
| 171 | McNeish Oil Oper | | Oil & Gas Operator | Feb 1991 |
| 172 | McNown, Carl H. | Moline, KS 67353 | Oil Operator | Jun 2021 |
| 173 | Melrose Group In | | Oil Operator | Feb 1994 |
| 174 | Metro Oil Compan | | Oil Operator | Jan 1991 |
| 175 | Mid States Gener | | Oil Operator | Apr 1988 |
| 176 | Mid-Continent Energy Corp. | Wichita, KS 67208 | Oil & Gas Operator | Sep 2025 |
| 177 | Midwestern Oil C | | Oil & Gas Operator | May 1995 |
| 178 | Miller, Bobby Elzo | Sedan, KS 67361 | Oil Operator | Dec 2009 |
| 179 | Miller, Everett E. | Sedan, KS 67361 | Oil & Gas Operator | Sep 1986 |
| 180 | Miller, Robert A. | Sedan, KS 67361 | Oil Operator | Aug 2022 |
| 181 | Mohr, Steve | Maize, KS 67101 | Oil Operator | Aug 2022 |
| 182 | Morrow, Joe | Farmington, NM 87401 | Oil Operator | Jan 1993 |
| 183 | Myers Drilling And Exploration Inc. | Sedan, KS 67361 | Oil Operator | Aug 2022 |
| 184 | Myers, Gus & Annie | Sedan, KS 67361 | Oil Operator | Aug 2017 |
| 185 | Natural Capital LLC | Castle Rock, CO 80104 | Oil & Gas Operator | Dec 2009 |
| 186 | Neo Oilfield Services, LLC | Bristow, OK 74010 | Oil Operator | Oct 2015 |
| 187 | New Donna Lee Oil Company | Bakersfield, CA 93308 | Oil & Gas Operator | Jul 2025 |
| 188 | Oast, Thomas H. | Greenville, NC 27835 | Oil Operator | Nov 1985 |
| 189 | Oil Prop Company | | Oil & Gas Operator | Sep 1995 |
| 190 | Oil Property Man | | Oil & Gas Operator | Jun 1995 |
| 191 | Olympic Petroleu | | Oil & Gas Operator | Jul 1993 |
| 192 | Padgett Oil Inc. | Sedan, KS 67361 | Oil Operator | May 2006 |
| 193 | Par, Inc. | Oklahoma City, OK 73111 | Oil Operator | May 2016 |
| 194 | Patteson Oil | | Oil Operator | Dec 2009 |
| 195 | Patteson Oil, A General Partnership | Moline, KS 67353 | Oil Operator | Nov 2019 |
| 196 | Patteson, Thomas Wade | Moline, KS 67353 | Oil Operator | Sep 2025 |
| 197 | Patteson-Sheel O | | Oil Operator | Oct 1990 |
| 198 | Peak Energy LLC | Coffeyville, KS 67337 | Oil & Gas Operator | Sep 2025 |
| 199 | Perkins Oil Comp | | Oil Operator | Nov 1988 |
| 200 | Perkins Oil Enterprises, Inc. | Howard, KS 67349 | Oil & Gas Operator | Sep 2025 |