1 | 1876 Resources LLC | Highlands Ranch, CO 80129 | Oil & Gas Operator | Oct 2024 |
2 | Abraxas Petroleum Corporation | San Antonio, TX 78259 | Oil & Gas Operator | Dec 2024 |
3 | Advanced Recovery Services Co | Denver, CO 80265 | Oil & Gas Operator | Apr 2007 |
4 | Aexco Petroleum Inc | Denver, CO 80202 | Oil & Gas Operator | Sep 2024 |
5 | Allen And Crouch | Casper, WY 82602 | Oil & Gas Operator | Mar 2020 |
6 | American Eagle Oil | Casper, WY 82605 | Oil & Gas Operator | Dec 2012 |
7 | American Exploration Company | Houston, TX 77010 | Oil & Gas Operator | Jan 2000 |
8 | Anadarko E&P Onshore LLC | Houston, TX 77046 | Oil & Gas Operator | Dec 2024 |
9 | Anadarko Petroleum Corporation | Houston, TX 77251 | Oil & Gas Operator | Sep 2024 |
10 | Anchor Bay Corporation | Denver, CO 80202 | Oil & Gas Operator | Jun 2007 |
11 | Anderson Management Company | Gillette, WY 82716 | Oil & Gas Operator | May 2016 |
12 | Anderson Oil Company | Burkburnett, TX 76354 | Oil & Gas Operator | Dec 2015 |
13 | Anr Production Company | Houston, TX 77046 | Oil & Gas Operator | Aug 2017 |
14 | Anschutz Corporation, The | Denver, CO 80202 | Oil & Gas Operator | Sep 2016 |
15 | Anschutz Exploration Corporation | Denver, CO 80202 | Oil & Gas Operator | Dec 2024 |
16 | Anschutz Oil Company LLC | Denver, CO 80202 | Oil & Gas Operator | Sep 2020 |
17 | Ant Hills Production | Lusk, WY 82225 | Oil & Gas Operator | Aug 2024 |
18 | Antelope Energy Company LLC | Denver, CO 80202 | Oil & Gas Operator | Oct 2024 |
19 | Apache Corporation | Houston, TX 77042 | Oil & Gas Operator | Dec 2024 |
20 | Arjay Oil Company | Salt Lake City, UT 84110 | Oil & Gas Operator | May 2000 |
21 | Ashland Exploration | | Oil & Gas Operator | May 1979 |
22 | Atlantic Oil Corporation | Denver, CO 80206 | Oil & Gas Operator | Dec 1982 |
23 | Atlantic Richfield Company | Plano, TX 75074 | Oil & Gas Operator | Dec 2016 |
24 | Avalon Energy Corporation | | Oil & Gas Operator | Jul 1990 |
25 | Aztec Gas And Oil Corporation | Elephant Butte, NM 87935-0370 | Oil & Gas Operator | Mar 2005 |
26 | Balidor Oil & Gas LLC | Houston, TX 77070 | Oil & Gas Operator | Oct 2021 |
27 | Ballard Petroleum Holdings LLC | Billings, MT 59104 | Oil & Gas Operator | Oct 2024 |
28 | Banks Operating Company | | Oil & Gas Operator | Jul 1989 |
29 | Barn Owls LLC | | Oil & Gas Operator | Sep 2024 |
30 | Barrett Patrick | | Oil & Gas Operator | Apr 1988 |
31 | Bass Enterprises Production Co | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2006 |
32 | Bass Petroleum Inc | Austin, TX 78716 | Oil & Gas Operator | Dec 2024 |
33 | Bearcat Energy LLC (Colorado) | Denver, CO 80202 | Oil & Gas Operator | May 2022 |
34 | Beard Oil Company | Oklahoma City, OK 73102 | Oil & Gas Operator | Aug 2013 |
35 | Berenergy Corporation | Denver, CO 80217 | Oil & Gas Operator | Nov 2024 |
36 | Big Chief Exploration | Palisades, CO 81526 | Oil & Gas Operator | Oct 1993 |
37 | Big Muddy Operating LLC | Casper, WY 82602 | Oil Operator | Oct 2024 |
38 | Bill Barrett Corporation | Denver, CO 80202 | Oil & Gas Operator | Dec 2017 |
39 | Black Bear Oil Corporation | Las Vegas, NV 89128 | Oil & Gas Operator | Oct 2024 |
40 | Black Diamond Energy Inc | Pittsburgh, PA 15237 | Gas Operator | May 2016 |
41 | Black Gold Services Inc | Casper, WY 82644 | Oil & Gas Operator | Nov 2024 |
42 | Black Hills Exploration & Production Inc | Newcastle, WY 82701 | Oil & Gas Operator | May 2018 |
43 | Blackjack Oil, Inc. | Las Vegas, NV 89128 | Oil & Gas Operator | Nov 2019 |
44 | Blue Tip Energy Wyoming Inc | Houston, TX 77284 | Oil Operator | Jun 2016 |
45 | Bowers Oil & Gas, Inc. | Grand Junction, CO 81505-1097 | Oil & Gas Operator | Nov 2022 |
46 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Oct 2024 |
47 | Bright Rock Energy LLC | Denver, CO 80202 | Oil & Gas Operator | Oct 2024 |
48 | Bronco Oil & Gas Co | Casper, WY 82602 | Oil & Gas Operator | Oct 1987 |
49 | Brown Doug & Larita | Newcastle, WY 82701 | Oil & Gas Operator | May 2024 |
50 | Brown Tom Inc | Dallas, TX 75240 | Oil & Gas Operator | Mar 2015 |
51 | Burlington Resources Oil & Gas Company L | Gillette, WY 82718 | Oil & Gas Operator | Jan 2022 |
52 | Burnett Oil Co Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2024 |
53 | Bwab Incorporated | Denver, CO 80202 | Oil & Gas Operator | Aug 1996 |
54 | Capitol Oil & Gas Corporation | Centennial, WY 82055 | Oil Operator | Feb 2006 |
55 | Carol-Holly Oil Corporation | Denver, CO 80237 | Oil & Gas Operator | Oct 2024 |
56 | Celsius Energy Company | Denver, CO 80202-1558 | Oil & Gas Operator | Mar 2000 |
57 | Central Resources Inc | Denver, CO 80203 | Oil & Gas Operator | Dec 2019 |
58 | Central Wyoming Resources LTD | Glenrock, WY 82637 | Oil Operator | Jul 2021 |
59 | Century Production Inc | | Oil & Gas Operator | Dec 1986 |
60 | Chaco Energy Company | Denver, CO 80201 | Oil & Gas Operator | Oct 2024 |
61 | Chambers Jerry | Denver, CO 80237 | Oil & Gas Operator | Dec 1993 |
62 | Chaparral Energy, L.L.C. | Oklahoma City, OK 73142 | Oil & Gas Operator | Dec 2024 |
63 | Chaparral Resources Inc | Denver, CO 80293 | Oil & Gas Operator | Jan 1996 |
64 | Chapman Exploration Inc | Tulsa, OK 74136 | Oil & Gas Operator | Aug 2013 |
65 | Charger Resources, LLC | Hurst, TX 76054 | Oil & Gas Operator | Aug 2015 |
66 | Chemily Management Company | Cypress, TX 77429 | Oil & Gas Operator | Apr 2023 |
67 | Chesapeake Operating, LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Dec 2024 |
68 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | Dec 2024 |
69 | Chipcore LLC | Casper, WY 82601 | Oil & Gas Operator | Oct 2024 |
70 | Chippewa Oil & Gas Inc | Douglas, WY 82633 | Oil & Gas Operator | Jan 1985 |
71 | Chriscor Oil & Gas | Plana, TX 75075 | Oil & Gas Operator | Jul 1987 |
72 | Citation Oil & Gas Corp. | Houston, TX 77269 | Oil & Gas Operator | Dec 2024 |
73 | Coastal Oil & Gas Corporation | Houston, TX 77252 | Oil & Gas Operator | Dec 2009 |
74 | Cobra Oil & Gas Corporation | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2024 |
75 | Coleman Oil & Gas Inc | Farmington, NM 87499 | Oil & Gas Operator | Jan 2023 |
76 | Colorado Oil & Gas Corporation | | Oil & Gas Operator | May 2003 |
77 | Combined Oil & Gas | Denver, CO 80202 | Oil & Gas Operator | Feb 1990 |
78 | Comet Energy Services LLC | Traverse City, MI 49686 | Oil & Gas Operator | Oct 2011 |
79 | Common Energy Inc | Douglas, WY 82633 | Oil & Gas Operator | Aug 1995 |
80 | Conoco Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
81 | Conquest Exploration | Houston, TX 77068 | Oil & Gas Operator | May 1991 |
82 | Contango Resources LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
83 | Continental Industries LC | Casper, WY 82602 | Oil & Gas Operator | Feb 2008 |
84 | Continental Production Co LLC | Greenwood VIllage, CO 80155 | Oil & Gas Operator | Aug 2012 |
85 | Continental Resources, Inc. | Oklahoma City, OK 73126 | Oil & Gas Operator | Dec 2024 |
86 | Convest Energy Corporation | Houston, TX 77057 | Oil & Gas Operator | Sep 2014 |
87 | Cook D L | Holliday, TX 76366 | Oil & Gas Operator | Dec 2008 |
88 | Coquina Oil Corporation | Houston, TX 77227 | Oil & Gas Operator | Mar 2015 |
89 | Corrida Oil Inc | Denver, CO 80217 | Oil & Gas Operator | Jun 1990 |
90 | Cotton Petroleum Corporation | Tulsa, OK 74102 | Oil & Gas Operator | Jan 2005 |
91 | Crawley Petroleum Corporation | Oklahoma City, OK 73102 | Oil & Gas Operator | Dec 2024 |
92 | Creek Oil Company | Colorado Springs, CO 80906 | Oil & Gas Operator | Aug 2001 |
93 | D K Cook Heirs LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2011 |
94 | Dahill Murray P | Casper, WY 82601 | Oil & Gas Operator | Jun 2007 |
95 | Davis Exploration | | Oil Operator | Dec 2007 |
96 | Davis Oil Company | Pawhuska, OK 74056 | Oil & Gas Operator | Jun 2018 |
97 | DCD Inc | Gillette, WY 82716 | Oil & Gas Operator | Aug 2003 |
98 | Degaugh Well Service Inc | | Oil Operator | Jul 1989 |
99 | Dekalb Energy Company | Oklahoma City, OK 73134 | Oil & Gas Operator | Oct 1996 |
100 | Devon Energy Operating Corp | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2013 |