1 | Abraxas Petroleum Corporation | San Antonio, TX 78259 | Oil & Gas Operator | Dec 2024 |
2 | Aec Oil & Gas USA Inc | Denver, CO 80202 | Oil & Gas Operator | May 2004 |
3 | Andrikopoulos Resources* A G | | Oil & Gas Operator | Jul 2015 |
4 | Antara Resources Inc | Houston, TX 77002 | Oil & Gas Operator | Apr 2004 |
5 | Antler Energy LLC | Baggs, WY 82321 | Oil & Gas Operator | Sep 2024 |
6 | Arch Oil & Gas, LLC | Dallas, TX 75254 | Oil & Gas Operator | Dec 2024 |
7 | Argali Exploration Company | | Gas Operator | Aug 2024 |
8 | Axia Energy LLC | Hghlands Ranch, CO 80129-2258 | Oil & Gas Operator | Jun 2016 |
9 | Ballard Petroleum LLC | Billings, MT 59102-5406 | Oil & Gas Operator | Apr 2014 |
10 | Basin Exploration Inc | Denver, CO 80202 | Oil & Gas Operator | Sep 2004 |
11 | Bayless Producer LLC* Robert L | | Oil & Gas Operator | Sep 2024 |
12 | Beartooth Oil & Gas Company | Billings, MT 59103 | Oil & Gas Operator | Oct 2024 |
13 | Beeman Oil & Gas LLC | | Oil & Gas Operator | Oct 2024 |
14 | Booco'S Contract Services Inc | | Oil & Gas Operator | Jan 2021 |
15 | Bta Oil Producers | Midland, TX 79701 | Oil & Gas Operator | Sep 2009 |
16 | Cabot Oil & Gas Corporation | Houston, TX 77024 | Oil & Gas Operator | Sep 2024 |
17 | Cedar Ridge LLC | | Oil & Gas Operator | Oct 2006 |
18 | Celsius Energy Company | Denver, CO 80202-1558 | Oil & Gas Operator | Mar 2000 |
19 | Chaco Energy Company | Denver, CO 80201 | Oil & Gas Operator | Oct 2024 |
20 | Chandler & Associates LLC | | Oil & Gas Operator | Jul 2001 |
21 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | Dec 2024 |
22 | Citation Oil & Gas Corp. | Houston, TX 77269 | Oil & Gas Operator | Dec 2024 |
23 | CLX Oil & Gas LLC | | Oil & Gas Operator | Feb 2005 |
24 | Combined Resources Corporation | Edmond, OK 73083 | Oil & Gas Operator | Dec 2024 |
25 | Cypress Production, Inc. | Azle, TX 76020 | Oil & Gas Operator | Dec 2024 |
26 | Devon Louisiana Corporation | Houston, TX 77002 | Oil & Gas Operator | Oct 2019 |
27 | Diamondback Oil Partners LLP | Arvada, CO 80004 | Oil & Gas Operator | Dec 2016 |
28 | Diversified Energy LLC | Parker, CO 80138 | Oil & Gas Operator | Sep 2024 |
29 | East Resources Management LLC | | Oil Operator | Oct 2010 |
30 | Elm Ridge Exploration Company LLC | Bloomfield, NM 87413 | Oil & Gas Operator | Nov 2017 |
31 | Encana Oil & Gas (USA) Inc. | Denver, CO 80202 | Oil & Gas Operator | Oct 2020 |
32 | Entek GRB LLC | Denver, CO 80202 | Oil & Gas Operator | Oct 2021 |
33 | EOG Resources Inc | Midland, TX 79702 | Oil & Gas Operator | Dec 2024 |
34 | Fancher Oil LLC | Greenwood, CO 80111 | Oil & Gas Operator | Nov 2006 |
35 | Flying J Oil & Gas Inc | North Salt Lake, UT 84054 | Oil & Gas Operator | Dec 2009 |
36 | Forestar Group Inc | | Oil & Gas Operator | Sep 2015 |
37 | Foundation Energy Management, LLC | Addison, TX 75001 | Oil & Gas Operator | Dec 2024 |
38 | Gadeco LLC | | Oil & Gas Operator | Oct 2024 |
39 | Genesis Gas & Oil LLC | Kansas City, MO 64108 | Oil & Gas Operator | Aug 2011 |
40 | Geotech Production Inc | Centennial, CO 80016 | Oil & Gas Operator | Jun 2020 |
41 | Gilbert-Stewart Operating LLC | Denver, CO 80202 | Oil & Gas Operator | Aug 2024 |
42 | GRMR Oil And Gas LLC | Broomfield, CO 80021 | Oil & Gas Operator | Oct 2024 |
43 | Grynberg* Jack Dba Grynberg Petroleum Co | | Oil & Gas Operator | Jan 2023 |
44 | Gulfport Energy Corporation | Oklahoma City, OK 73134-5003 | Oil & Gas Operator | Sep 2024 |
45 | Hilcorp Energy Company | Houston, TX 77208 | Oil & Gas Operator | Dec 2024 |
46 | Howell Petroleum Corporation | Houston, TX 77251 | Oil & Gas Operator | Oct 2015 |
47 | HRM Resources II, LLC | Denver, CO 80202 | Oil & Gas Operator | Jan 2022 |
48 | HRM Resources III LLC | Denver, CO 80202 | Oil & Gas Operator | Jun 2022 |
49 | HRM Resources LLC | Denver, CO 80202 | Oil & Gas Operator | Aug 2015 |
50 | Infinity Oil & Gas Of Wyoming Inc | | Oil Operator | Dec 2007 |
51 | J-W Operating Company | Christoval, TX 76935 | Oil & Gas Operator | Dec 2024 |
52 | Jetta Operating Company Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2024 |
53 | Journey Operating, L.L.C. | Sugar Land, TX 77496 | Oil & Gas Operator | Aug 2006 |
54 | Juniper Resources Inc | | Oil Operator | Sep 2004 |
55 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | Dec 2024 |
56 | KCS Resources, Inc. | Houston, TX 77002 | Oil & Gas Operator | May 2010 |
57 | Kerr-McGee Oil & Gas Onshore LP | Houston, TX 77046 | Oil & Gas Operator | Dec 2024 |
58 | Koch Exploration Company, LLC | Denver, CO 80202 | Oil & Gas Operator | Jun 2019 |
59 | Lyster Oil Company Inc | | Oil & Gas Operator | Nov 2020 |
60 | Marathon Oil Company | Houston, TX 77024 | Oil & Gas Operator | Oct 2024 |
61 | Matrix Production Company | Sugar Land, TX 77478 | Oil & Gas Operator | Jul 2024 |
62 | McElvain Energy Inc | Denver, CO 80265 | Oil & Gas Operator | Nov 2019 |
63 | Medicine Bow Operating Company | Houston, TX 77002 | Oil & Gas Operator | Apr 2014 |
64 | Merit Energy Company | Dallas, TX 75240 | Oil & Gas Operator | Dec 2024 |
65 | Merrion Oil & Gas Corp | Farmington, NM 87401 | Oil & Gas Operator | Oct 2024 |
66 | Mull Drilling Company | Wichita, KS 67206 | Oil & Gas Operator | Sep 2024 |
67 | Mustang Resources LLC | Houston, TX 77256 | Oil & Gas Operator | Sep 2024 |
68 | Nance Petroleum Corporation | Billings, MT 59103-7168 | Oil & Gas Operator | Nov 2007 |
69 | New Frontier Energy Inc | | Gas Operator | Mar 2010 |
70 | North Shore Exploration & Production, LLC | Broomfield, CO 80021 | Oil & Gas Operator | Oct 2024 |
71 | Ocean Energy Inc Ndba Devon Louisiana Corp | | Oil & Gas Operator | Jul 2001 |
72 | Organic Energy Company LLC | | Oil & Gas Operator | Oct 2024 |
73 | Paladin Energy Partners LLC | | Oil & Gas Operator | Dec 2006 |
74 | Patina Oil & Gas Corporation | Denver, CO 80202 | Oil & Gas Operator | May 2016 |
75 | PDC Energy Inc | Denver, CO 80203 | Oil & Gas Operator | Sep 2024 |
76 | Peakview Operating Company, LLC | | Oil & Gas Operator | Sep 2024 |
77 | Peterson Energy Operating Inc | Loveland, CO 80537 | Oil & Gas Operator | Oct 2024 |
78 | Petroleum Resource Management Corp | Denver, CO 80203 | Oil & Gas Operator | Nov 2024 |
79 | Petroshare Corporation | | Oil & Gas Operator | Jan 2024 |
80 | Phillips Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Mar 2013 |
81 | Pioneer Natural Resources USA Inc | Irving, TX 75039 | Oil & Gas Operator | Aug 2024 |
82 | Poc-I LLC | Casper, WY 82605 | Oil & Gas Operator | Oct 2024 |
83 | Qep Energy Company | Midland, TX 79701 | Oil & Gas Operator | Sep 2024 |
84 | Qep Uinta Basin Inc | Salt Lake City, UT 84145-0601 | Oil & Gas Operator | Mar 2007 |
85 | Questar Expl. And Prod. Co. | Salt Lake Cty, UT 84145 | Oil & Gas Operator | Jul 2011 |
86 | Quicksilver Resources Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2018 |
87 | Renegade Oil & Gas Company LLC | | Oil & Gas Operator | Sep 2024 |
88 | Richardson Operating Company | Denver, CO 80237 | Oil & Gas Operator | Sep 2024 |
89 | Rock Creek Resources LLC | Englewood, CO 80112 | Oil & Gas Operator | Dec 2021 |
90 | Rocky MTN Natural Gas LLC Adba Black Hills Energy | | Gas Operator | Dec 2003 |
91 | Rosetta Resources Operating LP | San Antonio, TX 78216 | Oil & Gas Operator | Dec 2024 |
92 | Saga Petroleum Limited Liability Co Of Co | | Oil & Gas Operator | Jun 2018 |
93 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Sep 2024 |
94 | Shawnee Oil Development Co Inc | | Oil & Gas Operator | Oct 2024 |
95 | SM Energy Company | Midland, TX 79707 | Oil & Gas Operator | Dec 2024 |
96 | Sourcegas Energy Services Co | Golden, CO 80401 | Gas Operator | Jun 2015 |
97 | Southland Royalty Company LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jul 2021 |
98 | Stehle Oil Company | | Oil Operator | Jun 2021 |
99 | Stone Energy Corporation | Denver, CO 80202-2828 | Oil & Gas Operator | Oct 2014 |
100 | Sunburst, Inc. | Wheat Ridge, CO 80033 | Oil & Gas Operator | Aug 2024 |