1 | Augustus Energy Partners LLC | Billings, MT 59102 | Oil & Gas Operator | Feb 2014 |
2 | Augustus Energy Resources LLC | | Oil & Gas Operator | Jun 2018 |
3 | Barfield Oil Corporation | | Oil & Gas Operator | Mar 2001 |
4 | Barrett Resources Corporation | Denver, CO 80202 | Oil & Gas Operator | Sep 2004 |
5 | Berry Petroleum Company LLC | Bakersfield, CA 93311 | Oil & Gas Operator | Oct 2024 |
6 | Boulder Oil Company | | Oil & Gas Operator | Sep 2004 |
7 | Caerus Washco LLC | Denver, CO 80202 | Oil & Gas Operator | Feb 2019 |
8 | Calpine Natural Gas L.P. | Houston, TX 77002 | Oil & Gas Operator | Jan 2006 |
9 | Coleman Oil & Gas Inc | Farmington, NM 87499 | Oil & Gas Operator | Jan 2023 |
10 | Colton Limited Liability Co | | Oil & Gas Operator | Sep 2023 |
11 | CWC Petro LLC | | Gas Operator | Aug 2023 |
12 | Diamond Operating, Inc. | | Oil & Gas Operator | Feb 2022 |
13 | Duke Gas Company LLC | | Gas Operator | Oct 2024 |
14 | Energyquest II, LLC | The Woodlands, TX 77381 | Oil & Gas Operator | Sep 2024 |
15 | Evergreen Operating Corp | Denver, CO 80202 | Oil & Gas Operator | Dec 2019 |
16 | Fidelity Exploration & Production Company | Denver, CO 80203 | Oil & Gas Operator | Nov 2024 |
17 | Forest Oil Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
18 | Foundation Energy Management, LLC | Addison, TX 75001 | Oil & Gas Operator | Dec 2024 |
19 | Heartland Oil & Gas Company | | Oil & Gas Operator | Jun 2000 |
20 | HRC Operating, LLC | Denver, CO 80202 | Oil & Gas Operator | Nov 2017 |
21 | Huber Corporation* J M | | Oil & Gas Operator | Feb 2008 |
22 | J-W Operating Company | Christoval, TX 76935 | Oil & Gas Operator | Dec 2024 |
23 | Kerr-McGee Oil & Gas Onshore LP | Houston, TX 77046 | Oil & Gas Operator | Dec 2024 |
24 | McCartney Engineering LLC | Wheat Ridge, CO 80033 | Oil & Gas Operator | Oct 2024 |
25 | McElvain Energy Inc | Denver, CO 80265 | Oil & Gas Operator | Nov 2019 |
26 | Mountain Petroleum Corp | Denver, CO 80202 | Oil & Gas Operator | Jan 2016 |
27 | Noble Energy Inc | Midland, TX 79706 | Oil & Gas Operator | Dec 2024 |
28 | Omimex Petroleum Inc | Fort Worth, TX 76120 | Oil & Gas Operator | Aug 2022 |
29 | Own Resources Operating LLC | The Woodlands, TX 77381 | Oil & Gas Operator | Sep 2024 |
30 | Par Pacific Holdings Inc | | Oil & Gas Operator | Apr 2015 |
31 | PDC Energy Inc | Denver, CO 80203 | Oil & Gas Operator | Sep 2024 |
32 | Petron Development Company | | Oil & Gas Operator | Oct 2020 |
33 | Plains Petroleum Operating Co | Denver, CO 80202 | Oil & Gas Operator | Dec 2014 |
34 | Platinum Gas Properties LLC | | Gas Operator | Oct 2024 |
35 | Prime Operating Company | Houston, TX 77024 | Oil & Gas Operator | Dec 2024 |
36 | Prospective Investment & Trading Co., LTD., The | Tulsa, OK 74170-2320 | Oil & Gas Operator | Apr 2014 |
37 | Puckett-Warren Oil Co | | Oil & Gas Operator | Dec 2007 |
38 | Rosetta Resources Operating LP | San Antonio, TX 78216 | Oil & Gas Operator | Dec 2024 |
39 | Rosewood Resources, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Dec 2024 |
40 | Samedan Oil Corporation | Houston, TX 77067 | Oil & Gas Operator | Dec 2019 |
41 | Smith Energy Corp | | Oil & Gas Operator | Jan 2024 |
42 | Smith Energy LLC | | Oil & Gas Operator | Sep 2024 |
43 | Stelbar Oil Corporation, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Aug 2024 |
44 | The Houston Exploration Company | Houston, TX 77002 | Oil & Gas Operator | Apr 2017 |
45 | Tindall Operating Company | Englewood, CO 80112 | Oil & Gas Operator | Sep 2024 |
46 | Valley Operating Inc | Denver, CO 80218-3633 | Oil & Gas Operator | Jan 2004 |
47 | Vista Operating Inc | | Oil & Gas Operator | Dec 2014 |
48 | Ward & Son* Alfred | | Oil & Gas Operator | Jun 2023 |
49 | Wbi Production | | Gas Operator | May 2002 |
50 | Western Operating Company | Denver, CO 80204 | Oil & Gas Operator | Sep 2024 |
51 | Wise* Wayne L | | Oil & Gas Operator | Dec 2023 |
52 | WPX Energy Rocky Mountain LLC | Tulsa, OK 74101 | Oil & Gas Operator | Oct 2024 |