1 | Hadden, Pennell & Rohret | Lakewood, CO 80228 | Oil Operator | Nov 1994 |
2 | Hallwood Petroleum, Inc. | Midland, TX 79701 | Oil & Gas Operator | Apr 2024 |
3 | Hamon Operating Company | Dallas, TX 75201 | Oil & Gas Operator | Dec 2011 |
4 | Hancock, Burton W | Morrison, CO 80465 | Oil & Gas Operator | Dec 2017 |
5 | Harken Southwest Corp | Dallas, TX 752612007 | Oil & Gas Operator | Feb 2001 |
6 | Harper Oil Co. | Denver, CO 80217 | Oil & Gas Operator | May 2024 |
7 | Harrison, Thomas D | Park City, UT 84060-7307 | Gas Operator | Dec 1998 |
8 | Harvest (Us) Holdings, Inc | Houston, TX 77077 | Oil & Gas Operator | Apr 2011 |
9 | Helbing & Podpechan | Clarence, OK 74018 | Oil & Gas Operator | May 1983 |
10 | Held By Production, Inc. | Houston, TX 77251 | Oil & Gas Operator | May 1996 |
11 | Hershey Oil | Pasadena, CA 91103 | Oil & Gas Operator | Dec 1988 |
12 | Hiko Bell Mining & Oil Co | Vernal, UT 84078 | Oil & Gas Operator | Oct 2003 |
13 | Hill, A G | Dallas, TX 75201 | Oil & Gas Operator | May 2008 |
14 | Hill, Gillman A | Englewood, CO 80112 | Oil & Gas Operator | Jun 1993 |
15 | Holcomb Oil & Gas Inc | Farmington, NM 87401 | Oil & Gas Operator | May 2024 |
16 | Holden Energy Corporation | Ardmore, OK 73401 | Oil & Gas Operator | Mar 2015 |
17 | Hollandsworth & Travis Oil | Longview, TX 75606 | Oil Operator | May 2003 |
18 | Home Petroleum Corp | Victoria, TX 77902 | Oil & Gas Operator | Sep 2024 |
19 | Homeland Gas & Oil, Inc | Roosevelt, UT 84066-1574 | Oil & Gas Operator | Jul 2024 |
20 | Hondo Oil & Gas Company | Roswell, NM 88202 | Oil & Gas Operator | Aug 2006 |
21 | Hot Rod Oil | Vernal, UT 84078 | Oil & Gas Operator | Jan 2024 |
22 | Howell Oil Company | Hutchinson, KS 67504 | Oil & Gas Operator | May 2024 |
23 | HPC Incorporated | Denver, CO 80202 | Oil & Gas Operator | Nov 1998 |
24 | Hugoton Energy Corporation | Oklahoma City, OK 73113 | Oil & Gas Operator | Dec 2019 |
25 | Humble Oil & Refining Co. | Houston, TX 77252 | Oil & Gas Operator | Jan 2000 |
26 | Hunt Petroleum (Aec), Inc. | Dallas, TX 75201 | Oil & Gas Operator | Nov 2008 |
27 | Huntford Resources Corp | Englewood, CO 80112 | Oil & Gas Operator | Nov 2001 |
28 | Husky Oil Company | Cody, WY 82414 | Oil & Gas Operator | Dec 1984 |
29 | Hyland Oil Corporation | | Oil & Gas Operator | Apr 1990 |