Oil & Gas Companies in Ector County, TX
| Company Name | Company Location | Company Type | Most Recent Production |
|---|
| 1 | O & O Operators, LLC. | Fate, TX 75132 | Oil & Gas Operator | Sep 2025 |
| 2 | O'Brien, George H. Jr. | Midland, TX 79701 | Oil & Gas Operator | Jun 1994 |
| 3 | O'Ryan Oil And Gas | Odessa, TX 79768 | Oil & Gas Operator | Sep 2025 |
| 4 | Occidental Energy Company, Inc. | Houston, TX 77282 | Oil & Gas Operator | Jul 2021 |
| 5 | Occidental Energy Marketing, Inc. | Houston, TX 77227 | Gas Operator | Sep 2015 |
| 6 | Occidental Permian LTD. | Houston, TX 77046 | Oil & Gas Operator | Sep 2025 |
| 7 | Ocotillo Energy Resources, LLC | Odessa, TX 79765 | Oil Operator | Sep 2025 |
| 8 | Octane Energy Operating, LLC | Midland, TX 79701 | Oil & Gas Operator | Sep 2025 |
| 9 | Odessa Exploration, Inc. | Midland, TX 79702 | Oil & Gas Operator | Sep 2025 |
| 10 | Oil & Gas Properties | Midland, TX 79704 | Oil & Gas Operator | Sep 2025 |
| 11 | Oilwell Operators, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Sep 2025 |
| 12 | Ok Arena Operating Company | Oklahoma City, OK 73101 | Oil & Gas Operator | Sep 2025 |
| 13 | Oklahoma RB Operating Company | Midland, TX 79701 | Oil & Gas Operator | Jan 1998 |
| 14 | Olsen Energy Inc. | Boerne, TX 78006 | Oil & Gas Operator | Sep 2025 |
| 15 | Omar Operating Company | Midland, TX 79702 | Oil & Gas Operator | Sep 2013 |
| 16 | Opco Oil & Gas Co. | Dallas, TX 75231 | Oil & Gas Operator | Aug 2003 |
| 17 | Orion Energen Inc. | Austin, TX 78731 | Oil & Gas Operator | Jul 2023 |
| 18 | Oryx Energy Company | Dallas, TX 75221 | Oil & Gas Operator | May 2002 |
| 19 | Osborn Heirs Co | San Antonio, TX 78217 | Oil & Gas Operator | Jul 2025 |
| 20 | Overflow Energy, LLC | Perryton, TX 79070 | Oil & Gas Operator | Sep 2025 |
| 21 | Ovintiv USA Inc. | Denver, CO 80202 | Oil & Gas Operator | Sep 2025 |
| 22 | Owl Ops LLC | Midland, TX 79701 | Oil & Gas Operator | Sep 2025 |
| 23 | Oxbow Petroleum, LLC | Midland, TX 79703 | Oil & Gas Operator | May 2025 |
| 24 | Oxy USA Inc | Houston, TX 77046 | Oil & Gas Operator | Sep 2025 |
| 25 | Oxy USA WTP LP | Houston, TX 77046 | Oil & Gas Operator | Sep 2025 |
Production numbers shown above are only for Ector County, TX and for the production period listed.