Oil & Gas Companies in Starr County, TX
| Company Name | Company Location | Company Type | Most Recent Production |
|---|
| 1 | Okie Operating Company, LTD. | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2026 |
| 2 | Okla. Magic Circle Energy Corp. | Shawnee, OK 74801 | Oil & Gas Operator | Jul 2004 |
| 3 | Olsen Energy Inc. | Boerne, TX 78006 | Oil & Gas Operator | Feb 2026 |
| 4 | Omimex Petroleum Inc | Fort Worth, TX 76120 | Oil & Gas Operator | Aug 2022 |
| 5 | Opex Energy, LLC | Houston, TX 77042 | Oil & Gas Operator | Mar 2008 |
| 6 | Orphan Wells, LLC | Palmhurst, TX 78573 | Oil & Gas Operator | Feb 2026 |
| 7 | Orx Resources, L.L.C. | Houston, TX 77067 | Oil & Gas Operator | Feb 2026 |
| 8 | Oryx Energy Company | Dallas, TX 75221 | Oil & Gas Operator | May 2002 |
| 9 | Osborn Heirs Co | San Antonio, TX 78217 | Oil & Gas Operator | Dec 2025 |
| 10 | Osborn,W.B. Oil & Gas Operations | San Antonio, TX 78217 | Oil & Gas Operator | Feb 2026 |
| 11 | Overton Park Oil & Gas LP | Fort Worth, TX 76109 | Oil & Gas Operator | Feb 2026 |
| 12 | Oxy USA Inc | Houston, TX 77046 | Oil & Gas Operator | Feb 2026 |
Production numbers shown above are only for Starr County, TX and for the production period listed.