1 | Alpha Energy LLC | Ashland, OR 97520 | Oil & Gas Operator | Aug 2024 |
2 | Anadarko E&P Onshore LLC | Houston, TX 77046 | Oil & Gas Operator | Dec 2024 |
3 | Anadarko Ogc Company | Houston, TX 77251 | Oil & Gas Operator | Dec 1998 |
4 | Anchor Bay Corporation | Denver, CO 80202 | Oil & Gas Operator | Jun 2007 |
5 | Anderson Oil Company | Burkburnett, TX 76354 | Oil & Gas Operator | Dec 2015 |
6 | Anr Production Company | Houston, TX 77046 | Oil & Gas Operator | Aug 2017 |
7 | Arrowhead Resources USA LTD | | Oil & Gas Operator | Dec 1992 |
8 | Bannon Energy Inc | Houston, TX 77068 | Oil & Gas Operator | Jun 1998 |
9 | Beartooth Oil & Gas Company | Billings, MT 59103 | Oil & Gas Operator | Oct 2024 |
10 | Belco Energy Corp. | Dallas, TX 75231 | Oil & Gas Operator | Mar 2015 |
11 | Berco Resources LLC | Denver, CO 80206 | Oil & Gas Operator | Sep 2009 |
12 | Bill Barrett Corporation | Denver, CO 80202 | Oil & Gas Operator | Dec 2017 |
13 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Oct 2024 |
14 | Breitburn Operating LP | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
15 | Brown Tom Inc | Dallas, TX 75240 | Oil & Gas Operator | Mar 2015 |
16 | Burlington Resources Oil & Gas Company L | Gillette, WY 82718 | Oil & Gas Operator | Jan 2022 |
17 | C & K Petroleum | | Oil & Gas Operator | Jan 1984 |
18 | Cabot Oil & Gas Corporation | Houston, TX 77024 | Oil & Gas Operator | Sep 2024 |
19 | Celsius Energy Company | Denver, CO 80202-1558 | Oil & Gas Operator | Mar 2000 |
20 | Chaco Energy Company | Denver, CO 80201 | Oil & Gas Operator | Oct 2024 |
21 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | Dec 2024 |
22 | Christmann John J | Lubbock, TX 79401 | Oil & Gas Operator | Dec 1994 |
23 | Condor Exploration LLC | Greenwood VIllage, CO 80111 | Oil & Gas Operator | Sep 2009 |
24 | Conoco Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
25 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | Dec 2024 |
26 | Crown Energy Partners LLC | Englewood, CO 80112 | Oil & Gas Operator | Sep 2013 |
27 | Crown Oil & Gas Co Inc | Labarge, WY 83123 | Oil & Gas Operator | Jan 2023 |
28 | Dalen Resources Oil & Gas Co. | Dallas, TX 75206 | Oil & Gas Operator | Jun 2010 |
29 | Davis Oil Company | Pawhuska, OK 74056 | Oil & Gas Operator | Jun 2018 |
30 | Davis Petroleum Corp. | Houston, TX 77027 | Oil & Gas Operator | Dec 2024 |
31 | Devon SFS Operating Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2008 |
32 | Diamond Oil & Gas LLC | Casper, WY 82604 | Oil & Gas Operator | Oct 2024 |
33 | Eex Corporation | Houston, TX 77060 | Oil & Gas Operator | Feb 2000 |
34 | Energetics Inc | Englewood, CO 80155 | Oil & Gas Operator | Aug 1985 |
35 | EOG Resources Inc | Midland, TX 79702 | Oil & Gas Operator | Dec 2024 |
36 | EOG Y Resources Inc | Artesia, NM 88210 | Oil & Gas Operator | Feb 2019 |
37 | Equitable Resources Energy Company | Big Stone Gap, VA 24219 | Oil & Gas Operator | Dec 1997 |
38 | Exxon Mobil Corporation | Spring, TX 77389 | Oil & Gas Operator | Dec 2024 |
39 | Exxonmobil Oil Corp | Houston, TX 77210 | Oil & Gas Operator | Oct 2024 |
40 | Fairways Offshore Expl Inc | Houston, TX 77040 | Oil & Gas Operator | Mar 2016 |
41 | Flying J Oil & Gas Inc | North Salt Lake, UT 84054 | Oil & Gas Operator | Dec 2009 |
42 | FMC Corporation | Green River, WY 82935 | Oil & Gas Operator | Dec 2008 |
43 | Foundation Energy Managment LLC | Addison, TX 74119 | Oil & Gas Operator | Oct 2024 |
44 | G & H Resources LLC | Denver, CO 80202 | Oil & Gas Operator | Dec 2009 |
45 | Gary-Williams Production Company | Denver, CO 80202 | Oil & Gas Operator | May 2000 |
46 | General Atlantic Resources Inc | Denver, CO 80202 | Oil & Gas Operator | Jan 2022 |
47 | Getty Oil Company | Hays, KS 67601 | Oil & Gas Operator | Mar 2015 |
48 | Great Western Drilling Co | Midland, TX 79701 | Oil & Gas Operator | Dec 2024 |
49 | Greylock Production LLC | Charleston, WV 25311-1264 | Oil & Gas Operator | Oct 2024 |
50 | Herbaly Petroleum Corp | FT Worth, TX 76102 | Oil & Gas Operator | Feb 2002 |
51 | Hilcorp Energy Company | Houston, TX 77208 | Oil & Gas Operator | Dec 2024 |
52 | Home Petroleum Corp | Victoria, TX 77902 | Oil & Gas Operator | Dec 2024 |
53 | Hunt Oil Company | Dallas, TX 75201 | Oil & Gas Operator | Dec 2024 |
54 | Independent Production Company | Greenwood VIllage, CO 80121 | Oil & Gas Operator | May 2003 |
55 | Industrial Gas Services Inc | Wheat Ridge, CO 80033 | Oil & Gas Operator | Feb 2023 |
56 | Itr Petroleum Inc | Houston, TX 77002 | Oil & Gas Operator | Apr 1998 |
57 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | Dec 2024 |
58 | KCS Mountain Resources Inc | Manderson, WY 82432 | Oil & Gas Operator | Nov 2006 |
59 | Kerr-McGee Oil & Gas Onshore LP | Houston, TX 77046 | Oil & Gas Operator | Dec 2024 |
60 | Koch Exploration Company, LLC | Denver, CO 80202 | Oil & Gas Operator | Jun 2019 |
61 | Labarge Minerals Inc | Labarge, WY 83123 | Oil & Gas Operator | Jan 2020 |
62 | Lodestone Operating | Portland, TX 78374 | Oil & Gas Operator | Aug 2024 |
63 | M & G Oil And Gas Inc | Llabarge, WY 83123 | Oil & Gas Operator | Apr 2023 |
64 | Marathon Oil Company | Houston, TX 77024 | Oil & Gas Operator | Oct 2024 |
65 | McCulliss Resource Company Inc | Denver, CO 80202 | Oil & Gas Operator | Jun 1999 |
66 | Memorial Production Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
67 | Merit Energy Company | Dallas, TX 75240 | Oil & Gas Operator | Dec 2024 |
68 | Merrion Oil & Gas Corp | Farmington, NM 87401 | Oil & Gas Operator | Oct 2024 |
69 | Michigan-Wisconsin Pipe Line Co | | Oil & Gas Operator | Dec 1983 |
70 | Midgard Energy Company | The Woodlands, TX 77380 | Oil & Gas Operator | Dec 2014 |
71 | MRD Operating LLC (Delaware) | Houston, TX 77010 | Oil & Gas Operator | Jul 2015 |
72 | Natural Gas Corp Of California | Vernal, UT 84078 | Oil & Gas Operator | Dec 1989 |
73 | Natural Gas Processing Company | Worland, WY 82401 | Oil & Gas Operator | Oct 2024 |
74 | Northwest Exploration | | Oil & Gas Operator | Dec 1984 |
75 | Omimex Petroleum Inc (De) | Fort Worth, TX 76120 | Oil & Gas Operator | Aug 2020 |
76 | Ovintiv USA Inc. | Denver, CO 80202 | Oil & Gas Operator | Dec 2024 |
77 | Pacific Enterprises Oil Co USA | Dallas, TX 75201 | Oil & Gas Operator | Feb 2001 |
78 | Pacific Transmission Supply | | Oil & Gas Operator | Dec 1987 |
79 | Petral Exploration Inc LLC | Denver, CO 80217 | Oil & Gas Operator | May 2007 |
80 | Petro-Lewis Corp. | | Oil & Gas Operator | Feb 1994 |
81 | Pinedale Investment Inc | Pinedale, WY 82941 | Oil & Gas Operator | Oct 2024 |
82 | Pride Energy Company An Oklahoma GP | Tulsa, OK 74170 | Oil & Gas Operator | Oct 2024 |
83 | Qep Energy Company | Midland, TX 79701 | Oil & Gas Operator | Sep 2024 |
84 | Rainbow Oil Company | | Oil & Gas Operator | Aug 1999 |
85 | Rainbow Resources, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Aug 2007 |
86 | Richardson Operating Company | Denver, CO 80237 | Oil & Gas Operator | Sep 2024 |
87 | Rme Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Nov 2016 |
88 | Rocky Mountain Gas Inc | Sheridan, WY 82801 | Gas Operator | Nov 2009 |
89 | Sabine Oil & Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
90 | Samedan Oil Corporation | Houston, TX 77067 | Oil & Gas Operator | Dec 2019 |
91 | Samson Resources Company LLC | Denver, CO 80202 | Oil & Gas Operator | Feb 2021 |
92 | Snyder Oil Corporation | Houston, TX 77024 | Oil & Gas Operator | Mar 2008 |
93 | Southern Mineral Corporation | Houston, TX 77002 | Oil & Gas Operator | Oct 2001 |
94 | Southland Royalty Company | Houston, TX 77210 | Oil & Gas Operator | Sep 2011 |
95 | Tbi Exploration Inc | Englewood, CO 801556525 | Oil & Gas Operator | Jun 2011 |
96 | Texaco Exploration & Prod | Midland, TX 79702 | Oil & Gas Operator | Aug 2002 |
97 | The Brinkerhoff Company | Denver, CO 80202 | Oil & Gas Operator | Dec 2017 |
98 | Toc-Rocky Mountain Inc | | Oil & Gas Operator | Oct 2013 |
99 | Transhorizon Energy Inc | Cheyenne, WY 82003 | Oil & Gas Operator | Jul 2023 |
100 | True Oil LLC | Casper, WY 82602 | Oil & Gas Operator | Oct 2024 |