1 | Wacker Oil Inc | Houston, TX 77002 | Oil & Gas Operator | Aug 1996 |
2 | Waggoner-Baldridge Energy | | Oil Operator | Jun 1988 |
3 | Wagner & Brown Limited Partnership | Midland, TX 79701 | Oil & Gas Operator | Feb 2013 |
4 | Wainoco Oil & Gas Company | Houston, TX 77024 | Oil & Gas Operator | Dec 2005 |
5 | Walker L Willis | | Oil Operator | Dec 1985 |
6 | Wallway M J | Casper, WY 82601 | Oil & Gas Operator | Jan 1993 |
7 | Wapiti Oil & Gas LLC | Houston, TX 77024 | Oil Operator | Dec 2011 |
8 | Wapiti Operating, LLC | Houston, TX 77043 | Oil & Gas Operator | Dec 2024 |
9 | Ward Petroleum Corporation | Enid, OK 73702 | Oil & Gas Operator | Sep 2024 |
10 | Ware House Industries | Casper, WY 82605 | Oil & Gas Operator | Dec 2013 |
11 | Warrego Oil & Gas LLC | Lander, WY 82520 | Oil Operator | May 2018 |
12 | Warren E & P Inc | Dallas, TX 75240 | Oil & Gas Operator | Sep 2024 |
13 | Warren Enterprises Inc | Gillette, WY 82718 | Oil Operator | Dec 2022 |
14 | Washakie Energies Company | Worland, WY 82401 | Oil & Gas Operator | Dec 2019 |
15 | Washakie Oil Company | | Oil & Gas Operator | Dec 1989 |
16 | Washburn Lee | Newcastle, WY 82701 | Oil Operator | Sep 2024 |
17 | Washington Energy Exploration | | Oil & Gas Operator | Dec 1997 |
18 | Waterford Production Co | | Oil Operator | Oct 1992 |
19 | Wave Petroleum Operating LLC | Denver, CO 80202 | Oil & Gas Operator | Oct 2024 |
20 | Weaver Dale Inc | Powell, WY 82435 | Oil Operator | Apr 2005 |
21 | Weaver Oil Inc | | Oil & Gas Operator | Oct 2011 |
22 | Webb Resources Inc | | Oil & Gas Operator | Dec 1985 |
23 | Webster Joe | | Oil Operator | Apr 1987 |
24 | Wellstar Corporation | Northglenn, CO 80233 | Oil & Gas Operator | Sep 2024 |
25 | Wem Joint Venture | Gillette, WY 82716 | Oil & Gas Operator | Sep 2015 |
26 | Wesco Operating, Inc. | Casper, WY 82602 | Oil & Gas Operator | Oct 2024 |
27 | Wesco Production LLC | | Oil & Gas Operator | Jul 2024 |
28 | Wessely Energy Corporation | | Oil & Gas Operator | Feb 1989 |
29 | West Gas Inc | | Oil & Gas Operator | Dec 2017 |
30 | Westburne Petroleum Inc | | Oil Operator | Jun 1990 |
31 | Westech Energy Corporation | Denver, CO 80237 | Oil & Gas Operator | Mar 2011 |
32 | Western American Resources LLC | Denver, CO 80202 | Oil & Gas Operator | Jun 2024 |
33 | Western Gas Resources Inc | Denver, CO 80202-1955 | Oil & Gas Operator | Dec 2007 |
34 | Western Interior Energy Inc. | Denver, CO 80202 | Oil & Gas Operator | Jul 2020 |
35 | Western Interior Oil & Gas Corp | Casper, WY 82602 | Oil & Gas Operator | May 2015 |
36 | Western Oil Refining Company | Kemmerrer, WY 83101 | Oil & Gas Operator | Dec 1994 |
37 | Western Operating Company | Denver, CO 80204 | Oil & Gas Operator | Sep 2024 |
38 | Westport Oil & Gas Company LP | The Woodlands, TX 77380 | Oil & Gas Operator | Feb 2007 |
39 | Weststar Oil & Gas Inc | Edmond, OK 73013 | Oil & Gas Operator | Sep 2024 |
40 | Wexpro Company | Rock Springs, WY 82902-0458 | Oil & Gas Operator | Sep 2024 |
41 | Wexpro Development Company | Salt Lake City, UT 84111 | Oil & Gas Operator | Aug 2024 |
42 | Wexpro II Company | Salt Lake City, UT 84111 | Oil & Gas Operator | Sep 2024 |
43 | Wheless Drilling Company | | Oil & Gas Operator | Dec 1989 |
44 | Whisler Enterprise Company | Erie, CO 80516 | Oil & Gas Operator | Oct 2024 |
45 | White Rock Oil & Gas, LLC | Plano, TX 75024 | Oil & Gas Operator | Dec 2024 |
46 | Whiting Oil And Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
47 | Wichita River Oil Corporation | Englewood, CO 80111 | Oil & Gas Operator | Apr 2009 |
48 | Wilbanks Exploration, Inc. | Denver, CO 80202 | Oil & Gas Operator | May 2002 |
49 | Wildfire Partners Inc | Ardmore, OK 73402 | Oil & Gas Operator | Dec 2009 |
50 | Williams Exploration Company | | Oil & Gas Operator | Dec 1986 |
51 | Williams Ted H | | Oil & Gas Operator | Dec 2008 |
52 | Williston Basin Cosul-Profit SH | | Oil Operator | Dec 1989 |
53 | Wilshire Enterprises Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2015 |
54 | Win Oil Company | Russell, KS 67665 | Oil & Gas Operator | Jul 2021 |
55 | Winco Petroleum Corp | Denver, CO 80202 | Oil & Gas Operator | Dec 1997 |
56 | Wind River Energy Commission | | Oil Operator | Sep 2024 |
57 | Wind River Exploration | Powell, WY 82435 | Oil & Gas Operator | Oct 2024 |
58 | Windsor Energy Group LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Aug 2021 |
59 | Winkler L W & Son | Denver, CO 80222 | Oil & Gas Operator | Dec 2001 |
60 | Winter Ridge Energy LLC | Denver, CO 80202 | Oil & Gas Operator | Sep 2011 |
61 | WLP Oil Inc | Gillette, WY 82717 | Oil & Gas Operator | Dec 2018 |
62 | Wnu Energy LLC | Pinedale, WY 82941 | Oil & Gas Operator | Oct 2024 |
63 | Wold Energy Partners LLC | Denver, CO 80202 | Oil & Gas Operator | Feb 2022 |
64 | Wold John S | | Gas Operator | Feb 1991 |
65 | Wold Oil & Gas | | Oil & Gas Operator | Oct 1996 |
66 | Wold Oil Properties Inc | Denver, CO 80203 | Oil & Gas Operator | Feb 2018 |
67 | Wolf Energy Company | | Oil & Gas Operator | Dec 1985 |
68 | Wolverine Operations LLC | Buffalo, WY 82834 | Gas Operator | Oct 2008 |
69 | Wood River Oil & Refining Co | | Oil & Gas Operator | Dec 1998 |
70 | Woods Petroleum Corporation | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2015 |
71 | WPX Energy RM Company | Tulsa, OK 74101 | Oil & Gas Operator | Jun 2014 |
72 | WPX Energy Rocky Mountain LLC | Tulsa, OK 74101 | Oil & Gas Operator | Sep 2024 |
73 | WRC Energy LLC | Tulsa, OK 74135 | Oil & Gas Operator | Sep 2024 |
74 | Wulf Oil Co | | Oil & Gas Operator | Dec 1984 |
75 | Wyatt Petroleum Corporation | Evergreen, CO 80437 | Gas Operator | Jul 2002 |
76 | Wychgram Daniel C | Thermopolis, WY 82443 | Oil Operator | Feb 2001 |
77 | Wynn-Crosby Operating, LTD. | Dallas, TX 75201 | Oil & Gas Operator | Dec 2024 |
78 | Wyoil Corp | Buffalo, WY 82834 | Oil Operator | Sep 2024 |
79 | Wyoming Mineral Exploration LLC | Casper, WY 82602 | Oil Operator | Dec 2006 |
80 | Wyoming Oil & Minerals Inc | Casper, WY 82601 | Oil & Gas Operator | Jun 2001 |
81 | Wyoming Resources Corporation | Rapid City, SD 57702 | Oil & Gas Operator | Oct 2018 |
82 | Wyoming Western Oil | Pine Bluffs, WY 82082 | Oil Operator | Sep 2019 |