Oil & Gas Companies in Colorado
| Company Name | Company Location | Company Type | Most Recent Production |
|---|
| 1 | O'Brien Energy Resources Corp | Portsmouth, NH 03801 | Oil & Gas Operator | Dec 2025 |
| 2 | Ogris Operating, LLC | Midland, TX 79710 | Oil & Gas Operator | Dec 2025 |
| 3 | Okt Resources, LLC | Edmond, OK 73013 | Oil & Gas Operator | Dec 2025 |
| 4 | Omimex Petroleum Inc | Fort Worth, TX 76120 | Oil & Gas Operator | Aug 2022 |
| 5 | Organic Energy Company LLC | | Oil & Gas Operator | Oct 2025 |
| 6 | Orion Energy Partners LP | Denver, CO 80202 | Oil & Gas Operator | Nov 2010 |
| 7 | Overland Resources LLC | Greenwood VIllage, CO 80111 | Oil & Gas Operator | Feb 2019 |
| 8 | Own Resources Operating LLC | The Woodlands, TX 77381 | Oil & Gas Operator | Sep 2025 |
| 9 | Oxbow Properties Inc | Centennial, CO 80122-1422 | Oil & Gas Operator | Jan 2025 |
| 10 | Oxy USA Inc | Houston, TX 77046 | Oil & Gas Operator | Dec 2025 |
| 11 | Oxy USA WTP LP | Houston, TX 77046 | Oil & Gas Operator | Dec 2025 |
Production numbers shown above are only for Colorado and for the production period listed.