1 | U-N-I Exploratio | | Oil & Gas Operator | Dec 1990 |
2 | U-N-I Exploration & Development, Inc. | Yates Center, KS 66783 | Oil & Gas Operator | Jan 2003 |
3 | Uehlin LLC | Oberlin, KS 67749 | Oil Operator | Jun 2024 |
4 | Uhls, Jimmie J. | Sedan, KS 67361 | Oil Operator | Sep 2019 |
5 | Ulysses, City Of | Ulysses, KS 67880 | Gas Operator | Jul 2024 |
6 | Ummel'S Tank Ser | | Oil Operator | Sep 1994 |
7 | Unc Texas Incorp | | Gas Operator | May 1987 |
8 | Union Pacific Re | | Oil & Gas Operator | Dec 1996 |
9 | Union Pacific Resour | | Oil & Gas Operator | Apr 2002 |
10 | Union Texas Petroleum | Houston, TX 77252 | Oil & Gas Operator | Oct 1991 |
11 | Union Valley Petroleum Corporation | Enid, OK 73701 | Oil & Gas Operator | Sep 2024 |
12 | Unionville Explo | | Oil Operator | Jul 1984 |
13 | Unit Petroleum Company | Tulsa, OK 74170 | Oil & Gas Operator | Dec 2024 |
14 | United Energy & Exploration LLC | Ada, OK 74821 | Oil & Gas Operator | Sep 2024 |
15 | United Energy Inc. | Wichita, KS 67230 | Oil & Gas Operator | Dec 2002 |
16 | United Meridian | | Oil Operator | Dec 1992 |
17 | United Oil & Gas | | Oil Operator | Feb 1988 |
18 | United Petroleum | | Oil Operator | Mar 1986 |
19 | United Petroleum Corporation | Edgwater, CO 80214 | Oil & Gas Operator | May 1996 |
20 | United Reserve G | | Oil Operator | Aug 1987 |
21 | United States Exploration, Inc. | Denver, CO 80802 | Oil & Gas Operator | Jun 2009 |
22 | Universal Resour | | Oil & Gas Operator | Dec 1996 |
23 | Universal Resources Corp. | Salt Lake Cty, UT 84145 | Oil & Gas Operator | Jan 2000 |
24 | Unknown | Houston, TX 77208 | Oil & Gas Operator | Dec 2022 |
25 | Unrein Oil Co | | Oil Operator | Jul 2024 |
26 | Unruh, Elmer | Galva, KS 67443 | Oil & Gas Operator | Aug 1998 |
27 | Unruh, Mark D. | Peru, KS 67360 | Oil Operator | Sep 2011 |
28 | Upland Resources | | Oil Operator | Jul 1983 |
29 | Upland Resources, Inc. | Canadian, TX 79014 | Oil & Gas Operator | Dec 2009 |
30 | Uranus, Inc. | Kansas City, MO 64112 | Oil Operator | Jan 2000 |
31 | Urban Oil & Gas Group, LLC | Plano, TX 75074 | Oil & Gas Operator | Dec 2024 |
32 | Us Energy Exploration Corp | Rural Valley, PA 16249 | Oil & Gas Operator | Jul 2024 |
33 | Us Oil Resources LLC | Lakewood, CO 80123 | Oil Operator | Jul 2024 |
34 | Usins Oil Compan | | Oil Operator | Jan 1993 |
35 | Usx Operating Co., Inc. | Barnstall, OK 74002 | Oil & Gas Operator | Apr 2017 |
36 | Utah Oil LLC | Rantoul, KS 66079 | Oil Operator | Jul 2024 |