1 | Abo Petroleum Corp | Artesia, NM 88210 | Oil & Gas Operator | Jul 1988 |
2 | Adams, Frank B | Corpus Christi, TX 78476 | Oil & Gas Operator | Feb 1988 |
3 | Advantage Resources Inc | Broomfield, CO 80020 | Oil & Gas Operator | Aug 2024 |
4 | Aec Oil & Gas USA Inc | Denver, CO 80202 | Oil & Gas Operator | May 2004 |
5 | Afe Management Limited | Concord, Ontario, L4K 4G4 | Oil & Gas Operator | Sep 1987 |
6 | Alberta Gas Company | Vernal, UT 84078 | Oil & Gas Operator | Nov 2021 |
7 | Albritton Resources Inc | Dallas, TX 75206 | Oil & Gas Operator | Feb 2001 |
8 | Alco Oil & Gas | Lafayette, LA 70130 | Oil & Gas Operator | Dec 1970 |
9 | Alta Energy Corporation | Midland, TX 79701 | Oil & Gas Operator | Apr 1995 |
10 | Altamont Energy Operating LLC | Greenwood VIlliage, CO 80111 | Oil & Gas Operator | Sep 2024 |
11 | Altex Oil Corp | Breckenridge, CO 80424-1057 | Oil & Gas Operator | Dec 1999 |
12 | Amax Petroleum Corporation | Houston, TX 77042 | Oil & Gas Operator | Dec 2012 |
13 | Ambra Oil & Gas Company | Rangely, CO 81648 | Oil & Gas Operator | Jul 2006 |
14 | American Quasar Petroleum | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 1985 |
15 | Amoco Production Co. | Houston, TX 77253 | Oil & Gas Operator | Jun 2015 |
16 | Amoco Rocmount Company | Denver, CO 80201 | Oil & Gas Operator | Jan 1998 |
17 | Amtech Energy Inc | Plymouth, IL 62367-1016 | Oil & Gas Operator | Dec 2021 |
18 | Anadarko E&P Onshore LLC | Houston, TX 77046 | Oil & Gas Operator | Dec 2024 |
19 | Anadarko Petroleum Corporation | Houston, TX 77251 | Oil & Gas Operator | Sep 2024 |
20 | Anr Limited Inc/Coastal | Houston, TX 770460995 | Oil & Gas Operator | Dec 1987 |
21 | Anr Production Company | Houston, TX 77046 | Oil & Gas Operator | Aug 2017 |
22 | Anschutz Corporation, The | Denver, CO 80202 | Oil & Gas Operator | Sep 2016 |
23 | Anschutz Exploration Corporation | Denver, CO 80202 | Oil & Gas Operator | Dec 2024 |
24 | Apache Corporation | Houston, TX 77042 | Oil & Gas Operator | Dec 2024 |
25 | Apc Operating Partnership | Tulsa, OK 74136 | Oil & Gas Operator | Oct 1996 |
26 | Appaloosa Operating Company LLC | The Woodlands, TX 77387 | Oil & Gas Operator | Apr 2019 |
27 | Arb Energy Utah, LLC | Houston, TX 77002 | Oil & Gas Operator | Jul 2024 |
28 | Arch Oil And Gas Company | Midland, TX 79702 | Oil & Gas Operator | Feb 1994 |
29 | Arco Oil & Gas Company | Plano, TX 75086 | Oil & Gas Operator | Mar 2006 |
30 | Asamera Oil (Us) Inc | Denver, CO 80201 | Oil & Gas Operator | Jul 1985 |
31 | Ashley Valley Operating Company LLC | Orem, UT 84097 | Oil & Gas Operator | Oct 2024 |
32 | Augustus Energy Partners LLC | Billings, MT 59102 | Oil & Gas Operator | Feb 2014 |
33 | Avad Operating, LLC | Dallas, TX 75201 | Oil & Gas Operator | Dec 2024 |
34 | Aviara Energy Corporation | Dallas, TX 75201 | Oil & Gas Operator | Jun 2002 |
35 | Axia Energy II LLC | HGHLNDS Ranch, CO 80129 | Oil & Gas Operator | Jan 2020 |
36 | Axia Energy LLC | Hghlands Ranch, CO 80129-2258 | Oil & Gas Operator | Jun 2016 |
37 | Aztec Oil Co | | Oil & Gas Operator | Dec 1977 |
38 | B L Oil And Gas | Loco Hills, NM 88255 | Oil & Gas Operator | Aug 2010 |
39 | Babcock & Brown Energy Inc | Denver, CO 80202 | Oil & Gas Operator | Dec 2007 |
40 | Badger Oil Corporation | Lafayette, LA 70505 | Oil & Gas Operator | Nov 2011 |
41 | Badlands Energy-Utah, LLC | Denver, CO 80237 | Oil & Gas Operator | Feb 2018 |
42 | Badlands Production Company | Greenwood VIllage, CO 80111 | Oil & Gas Operator | Sep 2018 |
43 | Bainbridge Uinta LLC | Dallas, TX 75205 | Oil & Gas Operator | May 2021 |
44 | Ballard & Associates Inc | Billings, MT 59102-5406 | Oil & Gas Operator | Feb 2000 |
45 | Ballard Petroleum LLC | Billings, MT 59102-5406 | Oil & Gas Operator | Apr 2014 |
46 | Bar Mesa Resources Inc | Roosevelt, UT 84066 | Oil & Gas Operator | Sep 2012 |
47 | Barrett Resources Corporation | Denver, CO 80202 | Oil & Gas Operator | Sep 2004 |
48 | Basf Corporation | Houston, TX 77027 | Oil & Gas Operator | Nov 1992 |
49 | Basin Exploration Inc | Denver, CO 80202 | Oil & Gas Operator | Sep 2004 |
50 | Bayless, Robert L Producer | Denver, CO 80293 | Oil & Gas Operator | Sep 2003 |
51 | Beard, J / McIlnay & Assoc | Casper, WY 82604 | Oil & Gas Operator | Aug 1996 |
52 | Beartooth Oil & Gas Company | Billings, MT 59103 | Oil & Gas Operator | Oct 2024 |
53 | Belco Development Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Feb 1994 |
54 | Belco Petroleum Corp | Grand Junction, CO | Oil & Gas Operator | Dec 1983 |
55 | Belnorth Petroleum Corporation | Midland, TX 79701 | Oil & Gas Operator | Feb 1991 |
56 | Benson-Montin-Greer DRL | Farmington, NM 87402 | Oil & Gas Operator | Oct 2024 |
57 | Berry Petroleum Company | Denver, CO 80202 | Oil & Gas Operator | Feb 2014 |
58 | Berry Petroleum Company LLC | Bakersfield, CA 93311 | Oil & Gas Operator | Oct 2024 |
59 | BHP Petroleum (Americas) | Houston, TX 77056-3020 | Oil & Gas Operator | Mar 1993 |
60 | BHP Petroleum Company Inc | Houston, TX 77057 | Oil & Gas Operator | Jun 2016 |
61 | Bill Barrett Corporation | Denver, CO 80202 | Oil & Gas Operator | Dec 2017 |
62 | Birch Corporation | Denver, CO 80217 | Oil & Gas Operator | Dec 1989 |
63 | Bishop Petroleum Corp | Arvada, CO 80002 | Oil & Gas Operator | Oct 1993 |
64 | Blue Tip Castlegate, Inc | Erie, KS 66733 | Gas Operator | Jun 2016 |
65 | Boardwalk Petroleum Inc | | Oil & Gas Operator | Dec 1983 |
66 | Bog Inc (Bowers) | Grand Junction, CO 81502 | Oil & Gas Operator | Jan 1989 |
67 | Bonneville Fuels Corp | Denver, CO 80290 | Oil & Gas Operator | Jun 2002 |
68 | Bow Valley Petroleum Inc | Denver, CO 80202 | Oil & Gas Operator | Apr 1996 |
69 | Bowers Oil & Gas, Inc. | Grand Junction, CO 81505-1097 | Oil & Gas Operator | Nov 2022 |
70 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Oct 2024 |
71 | Bridge Oil Company LP | Midland, TX 79702 | Oil & Gas Operator | May 1999 |
72 | Brinkerhoff Drilling Co | | Oil & Gas Operator | Jul 1975 |
73 | Broadhead, Walter | Grand Junction, CO 81502 | Oil & Gas Operator | Mar 2005 |
74 | Bta Oil Producers | Midland, TX 79701 | Oil & Gas Operator | Sep 2009 |
75 | Buckhorn Petroleum | | Oil & Gas Operator | Dec 1983 |
76 | Burlington Resources O&G | Midland, TX 79710-1810 | Oil & Gas Operator | Mar 1997 |
77 | Burr Oil & Gas | Farmington, NM 87499 | Oil & Gas Operator | Feb 2000 |
78 | Burton/Hawks Inc | Casper, WY 82602 | Oil & Gas Operator | Sep 1993 |
79 | Buttes Gas & Oil Co | | Oil & Gas Operator | Dec 2009 |
80 | Buzzards Bench, LLC | Orangeville, UT 84537 | Gas Operator | Sep 2024 |
81 | Bwab Incorporated | Denver, CO 80202 | Oil & Gas Operator | Aug 1996 |
82 | C & K Petroleum Inc | Denver, CO 80202 | Oil & Gas Operator | Apr 1984 |
83 | C C Co | Holladay, UT 84124 | Oil & Gas Operator | Jan 2020 |
84 | C.S.V. Oil Exploration Co | West Jordan, UT 84088 | Gas Operator | Sep 2024 |
85 | Caerus Uinta, LLC | Denver, CO 80202 | Oil & Gas Operator | Oct 2024 |
86 | California Oil Co | | Oil & Gas Operator | Aug 1965 |
87 | Campbell, G S | Park City, UT 84060 | Oil & Gas Operator | Apr 1991 |
88 | Cannon | Rock Springs, WY 82902 | Oil Operator | Sep 2024 |
89 | Cap Energy LLC | Greeley, CO 80634 | Oil & Gas Operator | Aug 2019 |
90 | Capitol Operating Group, LLC | Lafayette, LA 70503-5334 | Oil & Gas Operator | Sep 2024 |
91 | Carbon Energy Corporation (USA) | Denver, CO 80290 | Oil & Gas Operator | Jul 2004 |
92 | Carter Oil Co | | Oil & Gas Operator | Dec 2013 |
93 | CDX Rockies LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2005 |
94 | Celsius Energy Company | Denver, CO 80202-1558 | Oil & Gas Operator | Mar 2000 |
95 | Central Resources Inc | Denver, CO 80203 | Oil & Gas Operator | Dec 2019 |
96 | Champlin Petroleum Co. | Rock Springs, WY 82902 | Oil & Gas Operator | Mar 1991 |
97 | Chandler & Associated Inc | Denver, CO 80202 | Oil & Gas Operator | Dec 1999 |
98 | Chevron Oil Company | | Oil & Gas Operator | Dec 1983 |
99 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | Dec 2024 |
100 | Cig Exploration Inc | Houston, TX 77046 | Oil & Gas Operator | Nov 1999 |