1 | H.L.Hawkins &H.L.Hawkins, Jr. | | Oil & Gas Operator | Feb 1989 |
2 | Hallwood Petroleum, Inc. | Midland, TX 79701 | Oil & Gas Operator | Apr 2024 |
3 | Hamilton Brothers Oil Co. | Houston, TX 77057 | Oil & Gas Operator | Mar 2015 |
4 | Hamman Oil & Refining Company | Houston, TX 77098 | Oil & Gas Operator | Dec 2024 |
5 | Hanvey Production Co., Inc. | Roanoke, TX 76262 | Oil & Gas Operator | Nov 2012 |
6 | Hawkeye Drilling Co. | Waskom, TX 75692 | Oil & Gas Operator | Feb 2023 |
7 | Hawthorne Oil And Gas Corp. | Houston, TX 77227 | Oil & Gas Operator | Sep 1993 |
8 | Helis Oil & Gas Company, L.L.C. | New Orleans, LA 70130 | Oil & Gas Operator | Oct 2023 |
9 | Henderson Petroleum Corp | San Angelo, TX 76906 | Oil & Gas Operator | Jul 2013 |
10 | Hilcorp Energy Company | Houston, TX 77208 | Oil & Gas Operator | Dec 2024 |
11 | Hrubetz Oil Co. | Dallas, TX 75225 | Oil Operator | Sep 1986 |
12 | Huffco Petroleum Corporation | | Oil & Gas Operator | Jul 1988 |
13 | Hunt Oil Company | Dallas, TX 75201 | Oil & Gas Operator | Dec 2024 |
14 | Hunt Petroleum (Aec), Inc. | Dallas, TX 75201 | Oil & Gas Operator | Nov 2008 |
15 | Hy-Mark Oil & Gas, Inc. | | Oil Operator | Mar 1991 |