Oil & Gas Companies in St. Mary Parish, LA
| Company Name | Company Location | Company Type | Most Recent Production |
|---|
| 1 | Harbert Energy Corp | Irving, TX 75015-2510 | Oil & Gas Operator | Feb 1993 |
| 2 | Harbert Energy Corp/Gulf Coast | | Oil & Gas Operator | Dec 1991 |
| 3 | Hassie Hunt Expl. Company | | Oil & Gas Operator | Aug 2008 |
| 4 | Hawkins Oil & Gas Inc | Tulsa, OK 74103 | Oil & Gas Operator | Dec 2016 |
| 5 | Headington Oil Company | Dallas, TX 75231 | Oil & Gas Operator | Dec 2016 |
| 6 | Helis Oil & Gas Company, L.L.C. | New Orleans, LA 70130 | Oil & Gas Operator | Oct 2023 |
| 7 | Hess Corporation, A De Corp. | | Oil & Gas Operator | Oct 2006 |
| 8 | Hilcorp Energy Company | Houston, TX 77208 | Oil & Gas Operator | Oct 2025 |
| 9 | Hilliard Petroleum Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Sep 2009 |
| 10 | Home Petroleum Corp | Victoria, TX 77902 | Oil & Gas Operator | Oct 2025 |
| 11 | Houston Exploration Co, The | Houston, TX 77002 | Oil & Gas Operator | Apr 2017 |
| 12 | Houston Oil & Minerals Corp. | Houston, TX 77002 | Oil & Gas Operator | Aug 1996 |
| 13 | Hubco Exploration Inc. | Houston, TX 77073 | Oil & Gas Operator | Sep 2002 |
| 14 | Hunt Oil Company | Dallas, TX 75201 | Oil & Gas Operator | Oct 2025 |
| 15 | Hunt Petroleum Corporation | Dallas, TX 75201 | Oil & Gas Operator | Nov 2008 |
| 16 | Hy-Mark Oil & Gas, Inc. | | Oil Operator | Mar 1991 |
Production numbers shown above are only for St. Mary Parish, LA and for the production period listed.