1 | Altex Oil Company | Breckenridge, CO 80424 | Oil & Gas Operator | Dec 2005 |
2 | American Exploration Company | Houston, TX 77010 | Oil & Gas Operator | Jan 2000 |
3 | Anadarko E&P Onshore LLC | Houston, TX 77046 | Oil & Gas Operator | Dec 2024 |
4 | Anadarko Petroleum Corporation | Houston, TX 77251 | Oil & Gas Operator | Sep 2024 |
5 | Angus Petroleum Corporation | Chicago, IL 60660 | Oil & Gas Operator | Dec 2022 |
6 | Anschutz Exploration Corporation | Denver, CO 80202 | Oil & Gas Operator | Dec 2024 |
7 | Anschutz Oil Company LLC | Denver, CO 80202 | Oil & Gas Operator | Sep 2020 |
8 | Apache Corporation | Houston, TX 77042 | Oil & Gas Operator | Dec 2024 |
9 | Argent Energy (Us) Holdings Inc | Sugar Land, TX 77479 | Oil & Gas Operator | Sep 2021 |
10 | Arjay Oil Company | Salt Lake City, UT 84110 | Oil & Gas Operator | May 2000 |
11 | Atx Energy Partners LLC | Austin, TX 78716 | Oil & Gas Operator | Oct 2024 |
12 | Axiom Energy LLC | Park City, UT 84098 | Oil Operator | Feb 2010 |
13 | Aztec Gas And Oil Corporation | Elephant Butte, NM 87935-0370 | Oil & Gas Operator | Mar 2005 |
14 | Banding M R Inc | Gillette, WY 82717 | Oil & Gas Operator | Oct 2024 |
15 | Barn Owls LLC | | Oil & Gas Operator | Sep 2024 |
16 | Bearcat Energy LLC (Colorado) | Denver, CO 80202 | Oil & Gas Operator | May 2022 |
17 | Berco Resources LLC | Denver, CO 80206 | Oil & Gas Operator | Sep 2009 |
18 | Berenergy Corporation | Denver, CO 80217 | Oil & Gas Operator | Nov 2024 |
19 | Big Chief Exploration | Palisades, CO 81526 | Oil & Gas Operator | Oct 1993 |
20 | Bill Barrett Corporation | Denver, CO 80202 | Oil & Gas Operator | Dec 2017 |
21 | Bird Oil Corporation | | Oil & Gas Operator | Jul 1992 |
22 | Black Diamond Energy Inc | Pittsburgh, PA 15237 | Gas Operator | May 2016 |
23 | Black Hills Exploration & Production Inc | Newcastle, WY 82701 | Oil & Gas Operator | May 2018 |
24 | Blackjack Oil, Inc. | Las Vegas, NV 89128 | Oil & Gas Operator | Nov 2019 |
25 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Oct 2024 |
26 | BP Exploration Inc | | Oil & Gas Operator | May 1993 |
27 | Brown Tom Inc | Dallas, TX 75240 | Oil & Gas Operator | Mar 2015 |
28 | Burk Royalty Co., LTD. | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 2024 |
29 | Burlington Resources Oil & Gas Company L | Gillette, WY 82718 | Oil & Gas Operator | Jan 2022 |
30 | BXP Operating, LLC | Houston, TX 77079 | Oil & Gas Operator | Dec 2024 |
31 | Carbon Creek Energy LLC | Sheridan, WY 82801 | Oil & Gas Operator | Sep 2024 |
32 | CH4 Energy LLC | Fort Worth, TX 76102 | Oil & Gas Operator | May 2006 |
33 | Chaco Energy Company | Denver, CO 80201 | Oil & Gas Operator | Oct 2024 |
34 | Chemily Management Company | Cypress, TX 77429 | Oil & Gas Operator | Apr 2023 |
35 | Chipcore LLC | Casper, WY 82601 | Oil & Gas Operator | Oct 2024 |
36 | Citation Oil & Gas Corp. | Houston, TX 77269 | Oil & Gas Operator | Dec 2024 |
37 | CNX Gas Company LLC | Canonsburg, PA 15317 | Oil & Gas Operator | Sep 2024 |
38 | Coastal Oil & Gas Corporation | Houston, TX 77252 | Oil & Gas Operator | Dec 2009 |
39 | Comet Energy Services LLC | Traverse City, MI 49686 | Oil & Gas Operator | Oct 2011 |
40 | Conoco Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
41 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | Dec 2024 |
42 | Contango Resources LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
43 | Continental Production Co LLC | Greenwood VIllage, CO 80155 | Oil & Gas Operator | Aug 2012 |
44 | Continental Resources, Inc. | Oklahoma City, OK 73126 | Oil & Gas Operator | Dec 2024 |
45 | Daube Company The | Ardmore, OK 73401 | Oil & Gas Operator | Oct 2024 |
46 | Davey Corporation | Golden, CO 80401 | Oil & Gas Operator | Oct 2024 |
47 | Davis Oil Company | Pawhuska, OK 74056 | Oil & Gas Operator | Jun 2018 |
48 | Davis Petroleum Corp. | Houston, TX 77027 | Oil & Gas Operator | Dec 2024 |
49 | DCD Inc | Gillette, WY 82716 | Oil & Gas Operator | Aug 2003 |
50 | Denbury Onshore, LLC | Plano, TX 75024 | Oil & Gas Operator | Dec 2024 |
51 | Deuel Arch W | | Oil & Gas Operator | Aug 1995 |
52 | Devon Energy Production Company LP | Oklahoma City, OK 73102 | Oil & Gas Operator | Dec 2024 |
53 | Devon SFS Operating Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2008 |
54 | Diamond Oil & Gas LLC | Casper, WY 82604 | Oil & Gas Operator | Oct 2024 |
55 | Dome Petroleum Corp | Denver, CO 80202 | Oil & Gas Operator | Dec 2016 |
56 | Dyco Petroleum Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Mar 2015 |
57 | Eland Energy Inc | Dallas, TX 75248 | Oil & Gas Operator | Sep 2024 |
58 | Elf Aquitaine Inc | Houston, TX 77002 | Oil & Gas Operator | May 1991 |
59 | Enerex Limited Liability Co | Craig, CO 81625 | Oil & Gas Operator | Jun 2024 |
60 | Energetics Inc | Englewood, CO 80155 | Oil & Gas Operator | Aug 1985 |
61 | Energy Reserves Group | Houston, TX 770563020 | Oil & Gas Operator | Apr 1996 |
62 | EOG Resources Inc | Midland, TX 79702 | Oil & Gas Operator | Dec 2024 |
63 | EOG Y Resources Inc | Artesia, NM 88210 | Oil & Gas Operator | Feb 2019 |
64 | Equitable Resources Energy Company | Big Stone Gap, VA 24219 | Oil & Gas Operator | Dec 1997 |
65 | Exxon Mobil Corporation | Spring, TX 77389 | Oil & Gas Operator | Dec 2024 |
66 | Falcon Creek Resources, Inc. | Tulsa, OK 74137 | Oil & Gas Operator | Apr 2001 |
67 | FDL Operating, LLC | Judson, TX 75660 | Oil & Gas Operator | Dec 2024 |
68 | Federated Oil & Gas Properties | Traverse City, MI 49685 | Gas Operator | Mar 2014 |
69 | Fidelity Exploration & Production Company | Denver, CO 80203 | Oil & Gas Operator | Nov 2024 |
70 | Fina Oil And Chemical Company | Dallas, TX 75221 | Oil & Gas Operator | May 2019 |
71 | General Atlantic Resources Inc | Denver, CO 80202 | Oil & Gas Operator | Jan 2022 |
72 | Gibbs William | | Oil Operator | Feb 2000 |
73 | Gilmore Oil & Gas | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
74 | Grizzly Operating LLC | Houston, TX 77057 | Oil & Gas Operator | Oct 2024 |
75 | Hershey Oil Corporation | Seminole, TX 79360 | Oil & Gas Operator | Jul 1992 |
76 | High Plains Gas LLC | Gillette, WY 82717 | Gas Operator | Aug 2014 |
77 | Highland Exploration | | Oil Operator | Sep 1979 |
78 | Hilcorp Energy Company | Houston, TX 77208 | Oil & Gas Operator | Dec 2024 |
79 | Home Petroleum Corp | Victoria, TX 77902 | Oil & Gas Operator | Dec 2024 |
80 | Hot Springs Resources LTD | Casper, WY 82601 | Oil Operator | Dec 2014 |
81 | Huber J M Corp | Edison, NJ 08837 | Oil & Gas Operator | Dec 2024 |
82 | Hunt Oil Company | Dallas, TX 75201 | Oil & Gas Operator | Dec 2024 |
83 | Independent Production Company | Greenwood VIllage, CO 80121 | Oil & Gas Operator | May 2003 |
84 | Integrity Oil & Gas | Golden, CO 80401 | Oil & Gas Operator | May 2011 |
85 | Jayne Morton Living Trust | Troup, TX 75789 | Oil Operator | Jul 2023 |
86 | Jims Water Service Inc | Gillette, WY 82717 | Oil & Gas Operator | Oct 2016 |
87 | JN Exploration & Prod | Billings, MT 59103-0159 | Oil & Gas Operator | Apr 2001 |
88 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | Dec 2024 |
89 | Kase Energy LLC | Roseville, MN 55113 | Oil Operator | Aug 2006 |
90 | Kennedy Oil | Gillette, WY 82716 | Oil & Gas Operator | Oct 2024 |
91 | Kerr-McGee Corporation | Dallas, TX 75380 | Oil & Gas Operator | Jun 2024 |
92 | KLT Gas Inc | Woodlands, TX 77380 | Oil & Gas Operator | Sep 2004 |
93 | Lance Oil & Gas Company Inc | Kirtland, NM 87417 | Oil & Gas Operator | Mar 2013 |
94 | Legacy Reserves Operating LP | Denver, CO 80201 | Oil & Gas Operator | Dec 2024 |
95 | Loil Oil LLC | Golden, CO 80402 | Oil & Gas Operator | Oct 2024 |
96 | Loundagin N B | Casper, WY 82602 | Oil & Gas Operator | Sep 2015 |
97 | M K M Oil Company | Casper, WY 82602 | Oil & Gas Operator | Jun 1996 |
98 | Manx Oil Corporation | Casper, WY 82601 | Oil & Gas Operator | Jun 2010 |
99 | Marathon Oil Company | Houston, TX 77024 | Oil & Gas Operator | Oct 2024 |
100 | Marlin Oil Company LLC | Gillette, WY 82718 | Oil & Gas Operator | Mar 2023 |