101 | Homestead Oil Inc | | Oil & Gas Operator | Jan 2018 |
102 | HRM Resources II, LLC | Denver, CO 80202 | Oil & Gas Operator | Jan 2022 |
103 | HRM Resources LLC | Denver, CO 80202 | Oil & Gas Operator | Aug 2015 |
104 | HS Resources, Inc. | Denver, CO 80202 | Oil & Gas Operator | Dec 2005 |
105 | Hyndrex Resources | | Oil & Gas Operator | Apr 2018 |
106 | Impetro Resources LLC | | Oil & Gas Operator | Dec 2024 |
107 | Industrial Gas Services Inc | Wheat Ridge, CO 80033 | Oil & Gas Operator | Feb 2023 |
108 | Intermountain Oil Co | | Oil & Gas Operator | Nov 2003 |
109 | Investment Equipment LLC | FT Morgan, CO 80701 | Oil & Gas Operator | Dec 2024 |
110 | J-W Operating Company | Christoval, TX 76935 | Oil & Gas Operator | Mar 2025 |
111 | Jenex Petroleum Corporation | The Woodlands, TX 77380 | Oil & Gas Operator | Mar 2025 |
112 | K P Kauffman Company Inc | Denver, CO 80203 | Oil & Gas Operator | Dec 2024 |
113 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | Mar 2025 |
114 | Kerr-McGee Oil & Gas Onshore LP | Houston, TX 77046 | Oil & Gas Operator | Mar 2025 |
115 | Kugler* Dean & Joe Dba D-J Oil Company | | Oil & Gas Operator | Sep 2019 |
116 | Lilis Energy Inc | Denver, CO 80203 | Oil & Gas Operator | Aug 2017 |
117 | Longs Peak Resources LLC | Houston, TX 77019 | Oil & Gas Operator | Nov 2024 |
118 | Lundvall Oil & Gas Inc | | Oil & Gas Operator | Jan 2023 |
119 | Lyco Energy Corporation | Dallas, TX 75206 | Oil & Gas Operator | Jun 2015 |
120 | M E III Corporation | | Oil & Gas Operator | Apr 2022 |
121 | Machii-Ross Petroleum Co | | Oil & Gas Operator | Apr 2014 |
122 | Magpie Operating, Inc | | Oil & Gas Operator | Dec 2024 |
123 | Marathon Oil Company | Houston, TX 77024 | Oil & Gas Operator | Jan 2025 |
124 | Markus Production, Inc | | Oil & Gas Operator | Mar 2021 |
125 | Matrix Energy LLC | | Oil & Gas Operator | Apr 2013 |
126 | McCartney Engineering LLC | Wheat Ridge, CO 80033 | Oil & Gas Operator | Jan 2025 |
127 | MDS Energy Development LLC | | Oil & Gas Operator | Dec 2024 |
128 | Mendell Niobrara LLC | | Oil & Gas Operator | Apr 2017 |
129 | Merit Energy Company | Dallas, TX 75240 | Oil & Gas Operator | Mar 2025 |
130 | Mineral Resources, Incorporated | Lewisville, TX 75029 | Oil & Gas Operator | Mar 2025 |
131 | Monago Operating Inc | | Oil & Gas Operator | Mar 2017 |
132 | Monahan* Rex Family Trust | | Oil & Gas Operator | Sep 2010 |
133 | Nanke Energy LLC | Westminster, CO 80234 | Oil & Gas Operator | Dec 2024 |
134 | New Horizon Exploration, Inc. | Richardson, TX 75081 | Oil & Gas Operator | Jun 2006 |
135 | Nickel Road Operating LLC | | Oil & Gas Operator | Sep 2024 |
136 | Noble Energy Inc | Midland, TX 79706 | Oil & Gas Operator | Mar 2025 |
137 | Noble Energy Production Inc | Houston, TX 77067 | Oil & Gas Operator | Mar 2025 |
138 | North American Resources Company | Billings, MT 59101 | Oil & Gas Operator | Dec 2019 |
139 | O'Brien Energy Resources Corp | Portsmouth, NH 03801 | Oil & Gas Operator | Mar 2025 |
140 | Omimex Petroleum Inc | Fort Worth, TX 76120 | Oil & Gas Operator | Aug 2022 |
141 | Orr Energy LLC | | Oil & Gas Operator | Nov 2012 |
142 | Overland Resources LLC | Greenwood VIllage, CO 80111 | Oil & Gas Operator | Jul 2019 |
143 | Oxbow Properties Inc | Centennial, CO 80122-1422 | Oil & Gas Operator | Jan 2025 |
144 | P & M Petroleum Management LLC | Denver, CO 80202 | Oil & Gas Operator | Oct 2021 |
145 | Painted Pegasus Petroleum LLC | | Oil & Gas Operator | Jul 2024 |
146 | Paladin Energy Partners LLC | | Oil & Gas Operator | Dec 2006 |
147 | Pancanadian Energy Resources Inc | | Oil & Gas Operator | Dec 2004 |
148 | Pape Oilfield Service Inc | | Oil & Gas Operator | Jul 2018 |
149 | Par Pacific Holdings Inc | | Oil & Gas Operator | Apr 2015 |
150 | Patina Oil & Gas Corporation | Denver, CO 80202 | Oil & Gas Operator | May 2016 |
151 | PCR Operating LLC | | Oil & Gas Operator | Jul 2024 |
152 | PDC Energy Inc | Denver, CO 80203 | Oil & Gas Operator | Dec 2024 |
153 | Peterson Energy Operating Inc | Loveland, CO 80537 | Oil & Gas Operator | Jan 2025 |
154 | Petro Operating Company LLC | | Oil & Gas Operator | Dec 2024 |
155 | Petro-Canada Resources (USA) Inc | Denver, CO 80202-472 | Oil & Gas Operator | Feb 2010 |
156 | Petroleum Energy Corp | | Oil & Gas Operator | Aug 2012 |
157 | Petroleum Management LLC | Platteville, CO 80651 | Oil & Gas Operator | May 2011 |
158 | Petroshare Corporation | | Oil & Gas Operator | Jan 2024 |
159 | Phoenix Resources LLC | Longview, TX 75604 | Oil & Gas Operator | Jul 2022 |
160 | Pozo Resources, Inc | Houston, TX 77002 | Oil & Gas Operator | Mar 2025 |
161 | Prairie Operating Co LLC | | Oil & Gas Operator | Nov 2024 |
162 | Prima Exploration, Inc. | Denver, CO 80206 | Oil & Gas Operator | Jan 2025 |
163 | Providence Operating LLC Dba Poco Operating | | Oil & Gas Operator | Dec 2024 |
164 | Ranchers Exploration Partners LLC | | Oil & Gas Operator | Jan 2015 |
165 | Recovery Energy Inc | | Oil & Gas Operator | Jan 2014 |
166 | Red Hawk Petroleum LLC | | Oil & Gas Operator | Dec 2024 |
167 | Red Willow Production, LLC | Ignacio, CO 81137 | Oil & Gas Operator | Oct 2015 |
168 | Renegade Oil & Gas Company LLC | | Oil & Gas Operator | Jan 2025 |
169 | Richardson Operating Company | Denver, CO 80237 | Oil & Gas Operator | Nov 2024 |
170 | Rme Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Nov 2016 |
171 | Rocket Petroleum Company | | Oil & Gas Operator | Aug 2005 |
172 | Roughhouse Oil & Gas LLC | | Oil & Gas Operator | Dec 2024 |
173 | Rubicon Oil & Gas, LLC | Midland, TX 79701 | Oil & Gas Operator | Mar 2025 |
174 | RWL Enterprises | | Oil & Gas Operator | Feb 2017 |
175 | Sandlin Oil Corp | Dacono, CO 80514 | Oil & Gas Operator | Jan 2025 |
176 | Sawtooth Energy Partners LLC | | Oil & Gas Operator | Nov 2005 |
177 | Schneider Energy Services Inc | | Oil & Gas Operator | Dec 2024 |
178 | Setex Oil And Gas Company | Houston, TX 77002 | Oil & Gas Operator | Feb 2012 |
179 | Shepler & Thomas, Inc. | Edmond, OK 73013 | Oil & Gas Operator | Nov 2024 |
180 | Slawson Exploration Company Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2025 |
181 | Smith Energy Corp | | Oil & Gas Operator | Jan 2024 |
182 | Smith Energy LLC | | Oil & Gas Operator | Jan 2025 |
183 | Smith Oil Properties Inc | | Oil & Gas Operator | Nov 2022 |
184 | Snyder Oil Corporation | Houston, TX 77024 | Oil & Gas Operator | Mar 2008 |
185 | Soper Production | | Oil & Gas Operator | Dec 2011 |
186 | Southwestern Production Corporation | Lakewood, CO 80228 | Oil & Gas Operator | Jan 2025 |
187 | Sovereign Energy LLC | | Oil & Gas Operator | Sep 2011 |
188 | Sovereign Operating Company LLC | Denver, CO 80202 | Oil & Gas Operator | Apr 2016 |
189 | Spellbound Energy LLC | Denver, CO 80202 | Oil & Gas Operator | Dec 2024 |
190 | St James Energy Operating Inc | | Oil & Gas Operator | Aug 2013 |
191 | Starlight Resources LLC | | Oil & Gas Operator | Jun 2006 |
192 | Stelbar Oil Corporation, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Nov 2024 |
193 | Stoneham Production LLC | | Oil & Gas Operator | Jan 2025 |
194 | Strachan Exploration Inc | Englewood, CO 80112 | Oil & Gas Operator | Dec 2024 |
195 | Summit Oil & Gas LLC | | Oil & Gas Operator | Jan 2025 |
196 | Sunburst, Inc. | Wheat Ridge, CO 80033 | Oil & Gas Operator | Dec 2024 |
197 | Sundance Energy Inc | Denver, CO 80202 | Oil & Gas Operator | Jul 2014 |
198 | Sundance Resources, Inc. | Rio VIsta, TX 76093 | Oil & Gas Operator | Mar 2012 |
199 | Swift Beef Company | | Oil & Gas Operator | May 2006 |
200 | Synergy Resources Corporation | | Oil & Gas Operator | Oct 2022 |