Oil & Gas Companies in Johnson County, WY
| Company Name | Company Location | Company Type | Most Recent Production |
|---|
| 1 | Sage Butte PRB Operating, LLC | Denver, CO 80202 | Oil & Gas Operator | Feb 2026 |
| 2 | Samson Resources Company LLC | Denver, CO 80202 | Oil & Gas Operator | Feb 2021 |
| 3 | Seven Sisters Oil & Gas LLC | Casper, WY 82602 | Oil & Gas Operator | Jan 2022 |
| 4 | Simon Oil LLC | Kaycee, WY 82639 | Oil Operator | Dec 2025 |
| 5 | Six Bar Oil LLC | Pine Haven, WY 82721 | Oil & Gas Operator | Feb 2026 |
| 6 | SM Energy Company | Midland, TX 79707 | Oil & Gas Operator | Apr 2026 |
| 7 | Sonat Exploration Co. | Houston, TX 77251 | Oil & Gas Operator | Dec 2021 |
| 8 | Southland Royalty Company | Houston, TX 77210 | Oil & Gas Operator | Sep 2011 |
| 9 | Southwestern Production Corporation | Lakewood, CO 80228 | Oil & Gas Operator | Feb 2026 |
| 10 | Storm Cat Energy USA Operating Corp | Denver, CO 80202 | Gas Operator | Jun 2017 |
| 11 | Stripper Oil Company Inc | | Oil Operator | Nov 2025 |
| 12 | Swepi LP | Houston, TX 77079 | Oil & Gas Operator | Jul 2020 |
Production numbers shown above are only for Johnson County, WY and for the production period listed.