| 101 | Hallador Petroleum LLP | Denver, CO 80264 | Oil & Gas Operator | Feb 2019 |
| 102 | Harken Southwest Corp | Dallas, TX 752612007 | Oil & Gas Operator | Feb 2001 |
| 103 | Hart Oil & Gas Inc | Houston, TX 77024 | Oil & Gas Operator | Jan 2017 |
| 104 | Harvest Energy Company | Englewood, CO 80110 | Oil & Gas Operator | Jun 1997 |
| 105 | Headington Oil Company LLC | Dallas, TX 75204 | Oil & Gas Operator | Apr 2016 |
| 106 | Hec Petroleum, Inc | Midland, TX 79705 | Oil & Gas Operator | Mar 2006 |
| 107 | Hicks Oil & Gas Inc | Farmington, NM 87499 | Oil & Gas Operator | Oct 2012 |
| 108 | High Plains Petroleum Corp | Boulder, CO 80305 | Oil & Gas Operator | Jan 2021 |
| 109 | Hilcorp Energy Company | Houston, TX 77208 | Oil & Gas Operator | Jul 2025 |
| 110 | Holcomb Oil & Gas Inc | Farmington, NM 87401 | Oil & Gas Operator | Jun 2025 |
| 111 | Horizon Natural Gas Company | Tulsa, OK 74170 | Oil & Gas Operator | Oct 2024 |
| 112 | Hugoton Energy Corporation | Oklahoma City, OK 73113 | Oil & Gas Operator | Dec 2019 |
| 113 | Huntington Energy LLC | Nichols Hill, OK 73116 | Oil & Gas Operator | Jul 2025 |
| 114 | Incline Reserves Inc | Topeka, KS BAD ADDR | Oil & Gas Operator | Mar 1994 |
| 115 | J C Well Service | Farmington, NM 87499 | Oil Operator | Jun 2003 |
| 116 | J Thomas Development Of NM Inc | Farmington, NM 87499 | Oil & Gas Operator | Dec 2009 |
| 117 | Jakd Solutions, LLC | Farmington, NM 87401 | Oil & Gas Operator | May 2025 |
| 118 | James L Ludwick | Farmington, NM 87499 | Gas Operator | Jul 2006 |
| 119 | Jay Management Company LLC | Houston, TX 77057 | Oil & Gas Operator | Jul 2025 |
| 120 | Jimmy Roberson Energy Corp. | Texarkana, TX 75503 | Oil & Gas Operator | Sep 2012 |
| 121 | JN Expl & Prod LTD Partnership | Billings, MT 59103-0159 | Oil & Gas Operator | Feb 2001 |
| 122 | Juniper Resources Exploration Company, LLC | Farmington, NM 87402 | Oil & Gas Operator | Aug 2024 |
| 123 | Kenson Operating Company Inc | Houston, TX 77002 | Oil & Gas Operator | Sep 2002 |
| 124 | Keystone Energy LLC | Farmington, NM 87499 | Oil & Gas Operator | May 2025 |
| 125 | Kimbell Oil Company Of Texas | Fort Worth, TX 76102 | Oil & Gas Operator | May 2025 |
| 126 | Koch Exploration Company, LLC | Denver, CO 80202 | Oil & Gas Operator | Jun 2019 |
| 127 | Kukui Operating Company | Ignacio, CO 81137 | Oil & Gas Operator | May 2013 |
| 128 | Lan Ma'S Oil And Gas LLC | Sugar Land, TX 77479 | Oil Operator | May 2025 |
| 129 | Lance Oil & Gas Company Inc | Kirtland, NM 87417 | Oil & Gas Operator | Mar 2013 |
| 130 | Lawrence W Ritter | Farmington, NM 87499 | Gas Operator | May 2025 |
| 131 | Lee M Crane | Bloomfield, NM 87413 | Gas Operator | May 2025 |
| 132 | Little Oil And Gas, Inc. | Farmington, NM 87499 | Oil & Gas Operator | Aug 2005 |
| 133 | Lively Exploration Company | Houston, TX 77063 | Oil & Gas Operator | Jul 2025 |
| 134 | Lizard Oil & Gas, LLC | Bloomfield, NM 87413 | Oil & Gas Operator | Feb 2017 |
| 135 | Locke-Taylor Drilling Co | Rifle, CO 81650 | Gas Operator | Mar 2006 |
| 136 | Logos Operating LLC | Farmington, NM 87401 | Oil & Gas Operator | May 2025 |
| 137 | M & G DRLG Co Inc | Farmington, NM 87499 | Oil & Gas Operator | May 2025 |
| 138 | M & M Production & Operation | Farmington, NM 87402 | Oil & Gas Operator | Oct 2019 |
| 139 | M R Schalk | Albuquerque, NM 87125 | Oil & Gas Operator | Jul 2022 |
| 140 | Manana Gas Inc | Albuquerque, NM 87122 | Oil & Gas Operator | May 2025 |
| 141 | Maralex Resources Inc | Ignacio, CO 81137 | Oil & Gas Operator | May 2025 |
| 142 | Marathon Oil Company | Houston, TX 77252 | Oil & Gas Operator | May 2025 |
| 143 | Markwest Resources Inc | Englewood, CO 801125004 | Oil & Gas Operator | Jun 2003 |
| 144 | McElvain Energy Inc | Denver, CO 80265 | Oil & Gas Operator | Nov 2019 |
| 145 | McKay Oil & Gas LLC | Albuquerque, NM 87191 | Gas Operator | Mar 2020 |
| 146 | McKenzie Methane | Houston, TX BAD ADDR | Gas Operator | Apr 1994 |
| 147 | Merit Energy Company, LLC | Dallas, TX 75240 | Oil & Gas Operator | Mar 2025 |
| 148 | Merrion Oil & Gas Corp | Farmington, NM 87401 | Oil & Gas Operator | May 2025 |
| 149 | Morningstar Operating LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jul 2025 |
| 150 | Morningstar Partners, L.P. | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2022 |
| 151 | Mountain States Petroleum Corp | Midland, TX 79702 | Oil & Gas Operator | Apr 2008 |
| 152 | Mustang Resources LLC | Houston, TX 77256 | Oil & Gas Operator | May 2025 |
| 153 | Nacogdoches Oil & Gas Inc | Nacogdoches, TX 75963 | Oil & Gas Operator | Jul 2025 |
| 154 | Nassau Resources Inc | Denver, CO 80222 | Oil & Gas Operator | Mar 2000 |
| 155 | Navajo Nation Oil & Gas Co | Window Rock, AZ 86511 | Oil & Gas Operator | Oct 2012 |
| 156 | Nnogc Exploration & Production, LLC | Window Rock, AZ 86515 | Oil & Gas Operator | Jun 2025 |
| 157 | Noble Energy Inc | Midland, TX 79706 | Oil & Gas Operator | Jul 2025 |
| 158 | Norman L & Loretta E Gilbreath | Aztec, NM 87401 | Gas Operator | Aug 2018 |
| 159 | Norman L Gilbreath | Aztec, NM 87401 | Gas Operator | Aug 2018 |
| 160 | Northstar Oil & Gas | Sewickley, PA 151430168 | Oil & Gas Operator | May 2005 |
| 161 | Northwest Pipeline Company | Salt Lake City, UT 841580900 | Oil & Gas Operator | Feb 1995 |
| 162 | Orville S Slaughter Jr | Denver, CO 80205 | Oil & Gas Operator | Aug 2000 |
| 163 | Ovintiv USA Inc. | Denver, CO 80202 | Oil & Gas Operator | Jul 2025 |
| 164 | Oxy USA Inc | Houston, TX 77046 | Oil & Gas Operator | Jul 2025 |
| 165 | P & M Petroleum Management | Denver, CO BAD ADDR | Oil & Gas Operator | Apr 2010 |
| 166 | P-R-O Management, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Jul 2025 |
| 167 | Pantera Energy Company | Amarillo, TX 79101 | Oil & Gas Operator | Jul 2025 |
| 168 | Parawon Operating LLC | Mobile, AL 36602 | Oil Operator | Oct 2011 |
| 169 | Patina San Juan Incorporated | Farmington, NM 87402 | Oil & Gas Operator | Dec 2007 |
| 170 | Pendragon Energy Partners Inc | Midland, TX 79701 | Oil & Gas Operator | Nov 2009 |
| 171 | Peoples Energy Production-Texas, L.P. | Houston, TX 77010 | Oil & Gas Operator | Oct 2007 |
| 172 | Petro Energy Inc | Farmington, NM 87499 | Oil & Gas Operator | Mar 2025 |
| 173 | Petro Mex, LLC | Farmington, NM 87499 | Oil & Gas Operator | Jun 2025 |
| 174 | Petrocorp Incorporated | Tulsa, OK 74170 | Oil & Gas Operator | Nov 2021 |
| 175 | Phillips Petroleum Co NW | Farmington, NM 87401 | Oil & Gas Operator | Dec 2002 |
| 176 | Phoenix Hydrocarbons Operating Corp | Midland, TX 79705 | Oil & Gas Operator | Oct 2022 |
| 177 | Pineland Operating Company LLC | Dallas, TX 75231 | Oil & Gas Operator | Apr 2025 |
| 178 | Pioneer Natural Resources USA Inc | Irving, TX 75039 | Oil & Gas Operator | Mar 2025 |
| 179 | Playa Minerals & Energy, Inc. | Houston, TX 77060 | Oil & Gas Operator | Nov 2003 |
| 180 | PNL Operating, LLC | Casper, WY 82602 | Gas Operator | Dec 2022 |
| 181 | Pogo Producing Company | Houston, TX 77002 | Oil & Gas Operator | Jan 2008 |
| 182 | Pogo Producing Company LLC | Houston, TX 77002 | Oil & Gas Operator | May 2025 |
| 183 | Priority Energy LLC | Summerland, CA 93067 | Oil & Gas Operator | Apr 2016 |
| 184 | Pro NM Energy Inc | Santa Fe, NM 87508 | Oil & Gas Operator | Oct 2015 |
| 185 | Producing Royalties Inc | Lubbock, TX BADADDR | Gas Operator | Aug 2004 |
| 186 | Pure Resources, L.P. | Midland, TX 79701 | Oil & Gas Operator | Mar 2006 |
| 187 | PXP Gulf Coast LLC | Houston, TX 77002 | Oil & Gas Operator | Mar 2004 |
| 188 | Qep Energy Company | Midland, TX 79701 | Oil & Gas Operator | Apr 2025 |
| 189 | Quintana Petroleum Services Inc | Houston, TX 77253 | Gas Operator | Apr 1996 |
| 190 | R & G Drilling Co Inc | Farmington, NM 87499 | Oil & Gas Operator | Apr 1995 |
| 191 | R & M Energy | Gonzales, TX 78629 | Oil & Gas Operator | Mar 2006 |
| 192 | R E Sitta Jr | Farmington, NM 874991230 | Oil & Gas Operator | Aug 2011 |
| 193 | R J Enterprises | Farmington, NM 874990051 | Oil Operator | Mar 2021 |
| 194 | Range Production Company | Fort Worth, TX 76102 | Oil & Gas Operator | Sep 2021 |
| 195 | RC Resources Corp | Dallas, TX 75231 | Oil & Gas Operator | Oct 2009 |
| 196 | Redwolf Production Inc | Farmington, NM 87499 | Oil & Gas Operator | Apr 2025 |
| 197 | Reliable Production LLC | Farmington, NM 87401 | Oil & Gas Operator | May 2025 |
| 198 | Resource Development Technology LLC | Morrison, CO 80465 | Oil & Gas Operator | Oct 2020 |
| 199 | Richardson Operating Company | Denver, CO 80237 | Oil & Gas Operator | Jun 2025 |
| 200 | Rim Operating, Inc. | Englewood, CO 80112 | Oil & Gas Operator | Jul 2025 |