Oil & Gas Companies in Calcasieu Parish, LA
| Company Name | Company Location | Company Type | Most Recent Production |
|---|
| 1 | U. D. Man, Inc. | San Antonio, TX 78212 | Oil & Gas Operator | Oct 2025 |
| 2 | U.S. Exploration Company | Houston, TX 77002 | Oil & Gas Operator | Aug 2003 |
| 3 | Union Exploration Partners, LTD. | | Oil & Gas Operator | Aug 1990 |
| 4 | Union Oil Co Of California | Midland, TX 79706 | Oil & Gas Operator | Jan 2022 |
| 5 | Union Pacific Resources Co. | Fort Worth, TX 76101 | Oil & Gas Operator | Sep 2002 |
| 6 | Union Texas Petroleum Corp. | Houston, TX 77252-2120 | Oil & Gas Operator | Dec 2014 |
| 7 | United Gas Pipe Line Co. | | Oil Operator | Aug 1993 |
| 8 | United World Energy Corporation | | Oil & Gas Operator | Dec 2024 |
| 9 | Universal Drilling Co., Inc. | Denver, CO 80203 | Oil & Gas Operator | Sep 2003 |
| 10 | Us Oil & Gas Inc | Marietta, OH 45750 | Oil & Gas Operator | Aug 2025 |
Production numbers shown above are only for Calcasieu Parish, LA and for the production period listed.