Oil & Gas Companies in Niobrara County, WY
| Company Name | Company Location | Company Type | Most Recent Production |
|---|
| 1 | Carlson Petroleum Company | Houston, TX 77010 | Oil & Gas Operator | Mar 2015 |
| 2 | Castle Rock Oil LLC | | Oil Operator | Aug 2025 |
| 3 | Central Resources Inc | Denver, CO 80203 | Oil & Gas Operator | Dec 2019 |
| 4 | Century Oil And Gas LLC | Katy, TX 77494 | Oil & Gas Operator | Aug 2025 |
| 5 | Chemily Management Company | Cypress, TX 77429 | Oil & Gas Operator | Apr 2023 |
| 6 | Cherokee Oil Production Inc | Wichita, KS 67230 | Oil & Gas Operator | Jan 1997 |
| 7 | Chesapeake Operating LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Oct 2025 |
| 8 | Cheyenne River LLC | Dallas, TX 75204 | Oil & Gas Operator | Nov 2018 |
| 9 | Chipcore LLC | Casper, WY 82601 | Oil & Gas Operator | Aug 2025 |
| 10 | Cig Exploration | Denver, CO 80201 | Oil & Gas Operator | Sep 1999 |
| 11 | Cinco Natural Resources Corp | La Grange, TX 78945 | Oil & Gas Operator | Oct 2025 |
| 12 | Citation Oil & Gas Corp. | Houston, TX 77269 | Oil & Gas Operator | Oct 2025 |
| 13 | Cobra Oil & Gas Corporation | Wichita Falls, TX 76307 | Oil & Gas Operator | Oct 2025 |
| 14 | Common Energy Inc | Douglas, WY 82633 | Oil & Gas Operator | Aug 1995 |
| 15 | Conoco Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 16 | Coral Production Corporation | Denver, CO 80201 | Oil & Gas Operator | Jun 2025 |
Production numbers shown above are only for Niobrara County, WY and for the production period listed.