Oil & Gas Companies in Campbell County, WY
| Company Name | Company Location | Company Type | Most Recent Production |
|---|
| 1 | O'Brien Energy Resources Corp | Portsmouth, NH 03801 | Oil & Gas Operator | Jun 2025 |
| 2 | Ocean Energy, Inc. | Houston, TX 77002 | Oil & Gas Operator | Aug 2003 |
| 3 | Oedekoven Amerifields Resources LLC | Sugar Land, TX 77478 | Oil Operator | Apr 2025 |
| 4 | Oedekoven Water & Hot Oil | Recluse, WY 82725 | Oil & Gas Operator | May 2025 |
| 5 | Oilfield Salvage & Service Company | Littleton, CO 80120 | Oil & Gas Operator | Apr 2025 |
| 6 | Okie Crude Company | Tulsa, OK 74103 | Oil & Gas Operator | Mar 2025 |
| 7 | Oklahoma Oil Company | Dallas, TX 75206 | Oil & Gas Operator | Aug 2013 |
| 8 | Olympic Exploration Inc | Denver, CO 80202 | Oil & Gas Operator | Jul 2004 |
| 9 | Opes Production Inc | Buffalo, WY 82834 | Gas Operator | Mar 2015 |
| 10 | Oryx Energy Company | Dallas, TX 75221 | Oil & Gas Operator | May 2002 |
| 11 | Osborn Heirs Company LTD | San Antonio, TX 78217 | Oil & Gas Operator | Feb 2025 |
| 12 | Oxford Exploration Company | Denver, CO 80237 | Oil & Gas Operator | Aug 1995 |
| 13 | Oxy Petroleum Inc | | Oil & Gas Operator | Jan 1986 |
| 14 | Oxy USA Inc | Houston, TX 77046 | Oil & Gas Operator | Jun 2025 |
Production numbers shown above are only for Campbell County, WY and for the production period listed.