1 | Aethon Energy Operating LLC | Dallas, TX 75251 | Oil & Gas Operator | Dec 2024 |
2 | Ambrit Energy Corporation | Garland, TX 75044 | Oil & Gas Operator | Jun 2003 |
3 | Amerada Hess Corporation | Houston, TX 77252 | Oil & Gas Operator | Aug 2013 |
4 | Amplify Energy Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
5 | Anadarko E&P Onshore LLC | Houston, TX 77046 | Oil & Gas Operator | Dec 2024 |
6 | Anadarko Petroleum Corporation | Houston, TX 77251 | Oil & Gas Operator | Sep 2024 |
7 | Anr Production Company | Houston, TX 77046 | Oil & Gas Operator | Aug 2017 |
8 | Apache Corporation | Houston, TX 77042 | Oil & Gas Operator | Dec 2024 |
9 | Atlantic Richfield Company | Plano, TX 75074 | Oil & Gas Operator | Dec 2016 |
10 | Augustus Energy Partners LLC | Billings, MT 59102 | Oil & Gas Operator | Feb 2014 |
11 | Baldes Henry | Riverton, WY 82501 | Oil Operator | Dec 1998 |
12 | Banta And Haigh | Aurora, CO 80014 | Oil & Gas Operator | Feb 1998 |
13 | Beartooth Oil & Gas Company | Billings, MT 59103 | Oil & Gas Operator | Oct 2024 |
14 | Berenergy Corporation | Denver, CO 80217 | Oil & Gas Operator | Nov 2024 |
15 | BHP Petroleum Company Inc | Houston, TX 77057 | Oil & Gas Operator | Jun 2016 |
16 | Bill Barrett Corporation | Denver, CO 80202 | Oil & Gas Operator | Dec 2017 |
17 | Black Bear Oil Corporation | Las Vegas, NV 89128 | Oil & Gas Operator | Oct 2024 |
18 | Black Coal Resources Company | Fort Washakie, WY 82514 | Oil & Gas Operator | Dec 1991 |
19 | Black Hills Exploration & Production Inc | Newcastle, WY 82701 | Oil & Gas Operator | May 2018 |
20 | Bluebonnet Energy Corporation | Englewood, CO 80112 | Oil & Gas Operator | Sep 2015 |
21 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Oct 2024 |
22 | BP Exploration Inc | | Oil & Gas Operator | May 1993 |
23 | Brower Oil & Gas Inc | Jenks, OK 74037 | Oil & Gas Operator | Nov 2022 |
24 | Brown Tom Inc | Dallas, TX 75240 | Oil & Gas Operator | Mar 2015 |
25 | Buffalo Resources LLC | Woodward, OK 73801 | Oil & Gas Operator | May 2024 |
26 | Burlington Resources Oil & Gas Company L | Gillette, WY 82718 | Oil & Gas Operator | Jan 2022 |
27 | Bwab Incorporated | Denver, CO 80202 | Oil & Gas Operator | Aug 1996 |
28 | Cabot Oil & Gas Corporation | Houston, TX 77024 | Oil & Gas Operator | Sep 2024 |
29 | Camwest Limited Partnership | Denver, CO 80202 | Oil & Gas Operator | Apr 2004 |
30 | Capitan Operating LLC | Reno, NV 89502 | Oil & Gas Operator | Jan 2013 |
31 | Castle Exploration Company Inc | Blue Bell, PA 19422 | Oil & Gas Operator | May 2018 |
32 | Celsius Energy Company | Denver, CO 80202-1558 | Oil & Gas Operator | Mar 2000 |
33 | Cenex | | Oil & Gas Operator | Dec 1996 |
34 | Chaparral Resources Inc | Denver, CO 80293 | Oil & Gas Operator | Jan 1996 |
35 | Chemily Management Company | Cypress, TX 77429 | Oil & Gas Operator | Apr 2023 |
36 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | Dec 2024 |
37 | Chipcore LLC | Casper, WY 82601 | Oil & Gas Operator | Oct 2024 |
38 | Chippewa Oil & Gas Inc | Douglas, WY 82633 | Oil & Gas Operator | Jan 1985 |
39 | Chriscor Oil & Gas | Plana, TX 75075 | Oil & Gas Operator | Jul 1987 |
40 | Christensen C G | | Oil Operator | Sep 1990 |
41 | Cig Exploration | Denver, CO 80201 | Oil & Gas Operator | Sep 1999 |
42 | Citation Oil & Gas Corp. | Houston, TX 77269 | Oil & Gas Operator | Dec 2024 |
43 | Clark Oil & Gas Inc | | Oil & Gas Operator | Dec 1990 |
44 | Coastal Oil & Gas Corporation | Houston, TX 77252 | Oil & Gas Operator | Dec 2009 |
45 | Cobra Oil & Gas Corporation | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2024 |
46 | Coleman Oil & Gas Inc | Farmington, NM 87499 | Oil & Gas Operator | Jan 2023 |
47 | Columbine Exploration Corp | Englewood, CO 80111 | Oil & Gas Operator | Aug 1998 |
48 | Comanche Oil & Gas Corp | Salt Lake City, UT 84107-3075 | Oil & Gas Operator | May 2005 |
49 | Common Energy Inc | Douglas, WY 82633 | Oil & Gas Operator | Aug 1995 |
50 | Conoco Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
51 | Contango Resources LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
52 | Continental Operating Co. | Houston, TX 77024 | Oil & Gas Operator | Dec 2024 |
53 | Crowheart Energy LLC | Baggs, WY 82321 | Oil & Gas Operator | Sep 2024 |
54 | Crown Central Petroleum Corp | Richmond, TX 77469 | Oil & Gas Operator | Dec 1999 |
55 | D & D Contract Pumping Inc | Casper, WY 82604 | Oil Operator | Nov 2024 |
56 | Damson Oil Corporation | Houston, TX 77210 | Oil & Gas Operator | Mar 2005 |
57 | Davis Oil Company | Pawhuska, OK 74056 | Oil & Gas Operator | Jun 2018 |
58 | Delta Exploration Company Inc | Denver, CO 80202 | Oil & Gas Operator | Dec 2024 |
59 | Denbury Onshore, LLC | Plano, TX 75024 | Oil & Gas Operator | Dec 2024 |
60 | Devon Energy Production Company LP | Oklahoma City, OK 73102 | Oil & Gas Operator | Dec 2024 |
61 | Devon SFS Operating Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2008 |
62 | Dome Petroleum Corp | Denver, CO 80202 | Oil & Gas Operator | Dec 2016 |
63 | Eagle Oil & Gas Co. | Dallas, TX 75225 | Oil & Gas Operator | Dec 2024 |
64 | El Paso Production Oil & Gas Co. | Houston, TX 77252 | Oil & Gas Operator | Dec 2024 |
65 | Elk Energy Corporation | Denver, CO 80218 | Oil & Gas Operator | Mar 2008 |
66 | Elk Petroleum Inc | Casper, WY 82601 | Oil & Gas Operator | Aug 2014 |
67 | Energetics Inc | Englewood, CO 80155 | Oil & Gas Operator | Aug 1985 |
68 | Energy Reserves Group | Houston, TX 770563020 | Oil & Gas Operator | Apr 1996 |
69 | Enervest Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
70 | EOG Resources Inc | Midland, TX 79702 | Oil & Gas Operator | Dec 2024 |
71 | EOG Y Resources Inc | Artesia, NM 88210 | Oil & Gas Operator | Feb 2019 |
72 | EP Energy E&P Company, LP | Houston, TX 77210 | Oil & Gas Operator | May 2022 |
73 | Escalera Resources Co | Casper, WY 82602 | Oil & Gas Operator | May 2018 |
74 | Everest Oil & Gas LLC | Santa Barbara, CA 93101 | Oil Operator | Sep 2024 |
75 | Exco Resources Inc | Dallas, TX 75251 | Oil & Gas Operator | Sep 2024 |
76 | Exxon Mobil Corporation | Spring, TX 77389 | Oil & Gas Operator | Dec 2024 |
77 | Family Tree Corporation | Lakewood, CO 80228 | Oil & Gas Operator | Feb 2013 |
78 | Finley Resources Inc | Fort Worth, TX 76113 | Oil & Gas Operator | Dec 2024 |
79 | First Energy Corporation | | Oil & Gas Operator | Jun 1993 |
80 | First Energy Properties | Houston, TX 77060 | Oil & Gas Operator | Dec 1986 |
81 | Flying J Oil & Gas Inc | North Salt Lake, UT 84054 | Oil & Gas Operator | Dec 2009 |
82 | Forest Oil Permian Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
83 | Fremont Energy Corporation | Oklahoma City, OK 73112 | Oil & Gas Operator | Dec 2004 |
84 | Gas Ventures LLC | Thermopolis, WY 82443 | Oil & Gas Operator | Oct 2020 |
85 | General Atlantic Resources Inc | Denver, CO 80202 | Oil & Gas Operator | Jan 2022 |
86 | Genesis St Operating LLC | Kansas City, MO 64108 | Oil & Gas Operator | Dec 2024 |
87 | Geodyne Operating Company | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2015 |
88 | Getty Oil Company | Hays, KS 67601 | Oil & Gas Operator | Mar 2015 |
89 | GLG Energy LP | Austin, TX 78701 | Oil & Gas Operator | Jun 1994 |
90 | Golden Energy Partners LLC | Denver, CO 80202 | Oil & Gas Operator | Jan 2010 |
91 | Golden Eye Resources LLC | Greenwood VLG, CO 80121 | Oil Operator | Mar 2014 |
92 | Great Northern Gas Company | Denver, CO 80293-0602 | Oil & Gas Operator | Jul 2017 |
93 | Greka Am Inc | Santa Maria, CA 93454 | Oil & Gas Operator | May 2013 |
94 | Gulf Oil Corp. | Denver, CO 80201-0599 | Oil & Gas Operator | Dec 2014 |
95 | Hadson Petroleum Corporation | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2015 |
96 | Hallador Petroleum LLP | Denver, CO 80264 | Oil & Gas Operator | Feb 2019 |
97 | Hawks Industries Inc | Casper, WY 82601 | Oil & Gas Operator | Jun 1993 |
98 | Herbaly Petroleum Corp | FT Worth, TX 76102 | Oil & Gas Operator | Feb 2002 |
99 | Home Petroleum Corp | Victoria, TX 77902 | Oil & Gas Operator | Dec 2024 |
100 | Hondo Oil & Gas | Houston, TX 77042 | Oil & Gas Operator | Oct 1995 |