1 | Abraxas Petroleum Corporation | San Antonio, TX 78259 | Oil & Gas Operator | Dec 2024 |
2 | Advanced Recovery Services Co | Denver, CO 80265 | Oil & Gas Operator | Apr 2007 |
3 | Aexco Petroleum Inc | Denver, CO 80202 | Oil & Gas Operator | Sep 2024 |
4 | Allen And Crouch | Casper, WY 82602 | Oil & Gas Operator | Mar 2020 |
5 | American Eagle Oil | Casper, WY 82605 | Oil & Gas Operator | Dec 2012 |
6 | American Exploration Company | Houston, TX 77010 | Oil & Gas Operator | Jan 2000 |
7 | Anadarko E&P Onshore LLC | Houston, TX 77046 | Oil & Gas Operator | Dec 2024 |
8 | Anadarko Petroleum Corporation | Houston, TX 77251 | Oil & Gas Operator | Sep 2024 |
9 | Anchor Bay Corporation | Denver, CO 80202 | Oil & Gas Operator | Jun 2007 |
10 | Anderson Management Company | Gillette, WY 82716 | Oil & Gas Operator | May 2016 |
11 | Anderson Oil Company | Burkburnett, TX 76354 | Oil & Gas Operator | Dec 2015 |
12 | Anr Production Company | Houston, TX 77046 | Oil & Gas Operator | Aug 2017 |
13 | Anschutz Corporation, The | Denver, CO 80202 | Oil & Gas Operator | Sep 2016 |
14 | Anschutz Exploration Corporation | Denver, CO 80202 | Oil & Gas Operator | Dec 2024 |
15 | Anschutz Oil Company LLC | Denver, CO 80202 | Oil & Gas Operator | Sep 2020 |
16 | Ant Hills Production | Lusk, WY 82225 | Oil & Gas Operator | Aug 2024 |
17 | Antelope Energy Company LLC | Denver, CO 80202 | Oil & Gas Operator | Sep 2024 |
18 | Apache Corporation | Houston, TX 77042 | Oil & Gas Operator | Dec 2024 |
19 | Arjay Oil Company | Salt Lake City, UT 84110 | Oil & Gas Operator | May 2000 |
20 | Ashland Exploration | | Oil & Gas Operator | May 1979 |
21 | Atlantic Oil Corporation | Denver, CO 80206 | Oil & Gas Operator | Dec 1982 |
22 | Atlantic Richfield Company | Plano, TX 75074 | Oil & Gas Operator | Dec 2016 |
23 | Avalon Energy Corporation | | Oil & Gas Operator | Jul 1990 |
24 | Aztec Gas And Oil Corporation | Elephant Butte, NM 87935-0370 | Oil & Gas Operator | Mar 2005 |