1 | Amerada Hess Corporation | Houston, TX 77252 | Oil & Gas Operator | Aug 2013 |
2 | Anadarko Production Co. | | Oil Operator | Feb 1989 |
3 | Apex Energy, L.L.C. | Tulsa, OK 74114 | Oil & Gas Operator | Sep 2024 |
4 | Arsenal Energy USA Inc. | | Oil & Gas Operator | Aug 2016 |
5 | Ballantyne Oil, LLC | | Oil & Gas Operator | Mar 2023 |
6 | Bonray Energy Corp. | | Oil & Gas Operator | Jun 1985 |
7 | Bow Petroleum, Inc. Of Colorado | | Oil & Gas Operator | Oct 2024 |
8 | Brigham Oil & Gas, L.P. | Austin, TX 78730 | Oil & Gas Operator | Oct 2015 |
9 | Brooks Exploration, Inc. | Denver, CO 80293 | Oil & Gas Operator | Mar 2001 |
10 | Bwab Incorporated | Denver, CO 80202 | Oil & Gas Operator | Aug 1996 |
11 | Cenex | | Oil & Gas Operator | Dec 1996 |
12 | Condor Petroleum, Inc. | Denver, CO 80202 | Oil & Gas Operator | Jun 2019 |
13 | Continental Resources, Inc. | Oklahoma City, OK 73126 | Oil & Gas Operator | Dec 2024 |
14 | Dakota-3 E&P Company, LLC | | Oil & Gas Operator | Jan 2012 |
15 | Energy Equity Company | Columbus, MT 59019 | Oil & Gas Operator | Sep 2024 |
16 | EOG Resources Inc | Midland, TX 79702 | Oil & Gas Operator | Dec 2024 |
17 | Equinor Energy LP | Austin, TX 78730 | Oil & Gas Operator | Oct 2021 |
18 | Fidelity Exploration & Production Company | Denver, CO 80203 | Oil & Gas Operator | Nov 2024 |
19 | Foundation Energy Management, LLC | Addison, TX 75001 | Oil & Gas Operator | Dec 2024 |
20 | Grayson Mill Operating, LLC | Houston, TX 77024 | Oil & Gas Operator | Oct 2024 |
21 | Hess Bakken Investments II, LLC | | Oil & Gas Operator | Oct 2024 |
22 | Hess Corporation | Houston, TX 77010 | Oil & Gas Operator | Aug 2017 |
23 | Hunt Oil Company | Dallas, TX 75201 | Oil & Gas Operator | Dec 2024 |
24 | Jettison, Inc. | | Oil & Gas Operator | Nov 2024 |
25 | Jordan Exploration Company, L.L.C. | | Oil & Gas Operator | Mar 2024 |
26 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | Dec 2024 |
27 | Kissinger Petroleum Corp | | Oil & Gas Operator | Nov 1983 |
28 | Kraken Development III, LLC | | Oil & Gas Operator | Nov 2021 |
29 | Liberty Resources Management Co LLC | Denver, CO 80202 | Oil & Gas Operator | Oct 2024 |
30 | Lime Rock Resources III-A, L.P. | Houston, TX 77002 | Oil & Gas Operator | Oct 2024 |
31 | Marathon Oil Company | Houston, TX 77024 | Oil & Gas Operator | Oct 2024 |
32 | Missouri River Royalty Corporation | Bismarck, ND 58504 | Oil & Gas Operator | Oct 2024 |
33 | Mitchell Energy Corp | Houston, TX 77002 | Oil & Gas Operator | Aug 2013 |
34 | Murex Petroleum Corporation | Humble, TX 77347 | Oil & Gas Operator | Oct 2024 |
35 | Nexen Oil And Gas U.S.A. Inc. | Calgary, AB T2P 5C1 | Oil & Gas Operator | Feb 2010 |
36 | Oasis Petroleum North America LLC | Houston, TX 77002 | Oil & Gas Operator | Oct 2024 |
37 | Petro-Hunt, L.L.C. | Dallas, TX 75201 | Oil & Gas Operator | Dec 2024 |
38 | Petrogulf Corporation | Denver, CO 80202 | Oil & Gas Operator | Dec 2024 |
39 | Phoenix Operating LLC | | Oil & Gas Operator | Nov 2024 |
40 | Pintail Petroleum Inc. | Wichita, KS 67202 | Oil & Gas Operator | Jun 2010 |
41 | Pintail Petroleum, LTD. | Wichita, KS 67202 | Oil & Gas Operator | Apr 2021 |
42 | Presidio Exploration, Inc. | Englewood, CO 80155 | Oil & Gas Operator | May 1999 |
43 | Prima Exploration, Inc. | Denver, CO 80206 | Oil & Gas Operator | Oct 2024 |
44 | Proven Petroleum, Inc. | Lakewood, CO 80228 | Oil & Gas Operator | Oct 2024 |
45 | Qep Energy Company | Midland, TX 79701 | Oil & Gas Operator | Sep 2024 |
46 | Ranch Oil Company | West Linn, OR 97068 | Oil & Gas Operator | Oct 2024 |
47 | Ritter, Laber & Associates, Inc. | Williston, ND 58802 | Oil & Gas Operator | Oct 2024 |
48 | Ryan Exploration, Inc. | | Oil & Gas Operator | Mar 2012 |
49 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Sep 2024 |
50 | Samuel Gary Jr. & Associates, Inc. | Denver, CO 80202 | Oil & Gas Operator | Aug 2024 |
51 | Sequel Energy, LLC | | Oil & Gas Operator | May 2014 |
52 | Silver Hill Energy Operating, LLC | Dallas, TX 75201 | Oil & Gas Operator | Dec 2024 |
53 | Sinclair Oil & Gas Company | Salt Lake Cty, UT 84130 | Oil & Gas Operator | Dec 2024 |
54 | Skelly Oil Co | | Oil & Gas Operator | Mar 2005 |
55 | Slawson Exploration Company Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Dec 2024 |
56 | Sogc, Inc. | Salt Lake Cty, UT 84131 | Oil & Gas Operator | Dec 2024 |
57 | St. Mary Land & Exploration Co | Denver, CO 80201 | Oil & Gas Operator | Jun 2010 |
58 | Statoil Oil & Gas LP | Austin, TX 78730 | Oil & Gas Operator | Oct 2018 |
59 | Stephens Williston, LLC Dba Seg Williston, LLC | | Oil & Gas Operator | Oct 2024 |
60 | Turtle Mountain Gas & Oil, Inc. | | Oil & Gas Operator | Oct 2006 |
61 | Tyrex Oil Company | Casper, WY 82602 | Oil & Gas Operator | May 1997 |
62 | Ward-Williston Company | | Oil & Gas Operator | Apr 2014 |
63 | White Butte Oil Operations, LLC | | Oil & Gas Operator | Oct 2024 |
64 | White Rock Oil & Gas, LLC | Plano, TX 75024 | Oil & Gas Operator | Dec 2024 |
65 | Whiting Oil And Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
66 | Whiting Petroleum Corporation | Denver, CO 80290 | Oil & Gas Operator | Jul 2024 |
67 | Windsor Energy Group LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Aug 2021 |
68 | WPX Energy Williston, LLC | | Oil & Gas Operator | Oct 2024 |
69 | XTO Energy Inc. | Spring, TX 77389 | Oil & Gas Operator | Dec 2024 |
70 | Zenergy Operating Company, LLC | Tulsa, OK 74136 | Oil & Gas Operator | Dec 2016 |