Oil & Gas Companies in Glasscock County, TX
| Company Name | Company Location | Company Type | Most Recent Production |
|---|
| 1 | O'Brien, George H. Jr. | Midland, TX 79701 | Oil & Gas Operator | Jun 1994 |
| 2 | O'Neill Properties, LTD. | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 3 | Occidental Energy Marketing, Inc. | Houston, TX 77227 | Gas Operator | Sep 2015 |
| 4 | Occidental Permian LTD. | Houston, TX 77046 | Oil & Gas Operator | Oct 2025 |
| 5 | Odessa Exploration, Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 6 | Odyssey Petroleum Company | Houston, TX 77010 | Oil & Gas Operator | Apr 1995 |
| 7 | Oga Operating L.L.C. | Midland, TX 79702 | Oil & Gas Operator | Jan 2000 |
| 8 | Ogris Operating, LLC | Midland, TX 79710 | Oil & Gas Operator | Oct 2025 |
| 9 | Ogx Operating, LLC | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 10 | Oil Management Corporation | Dallas, TX 75206 | Oil & Gas Operator | Apr 2022 |
| 11 | Oklahoma Oil Company | Dallas, TX 75206 | Oil & Gas Operator | Aug 2013 |
| 12 | Omega Energy Corp. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 13 | Omega Operating, Inc. | Odessa, TX 79769 | Oil & Gas Operator | Mar 2001 |
| 14 | Omimex Energy, Inc. | Fort Worth, TX 76120 | Oil & Gas Operator | Jun 2025 |
| 15 | Orbit Crude, Inc. | Midland, TX 79710 | Oil & Gas Operator | Oct 2025 |
| 16 | Oryx Energy Company | Dallas, TX 75221 | Oil & Gas Operator | May 2002 |
| 17 | Ovintiv USA Inc. | Denver, CO 80202 | Oil & Gas Operator | Oct 2025 |
| 18 | Owl Ops LLC | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 19 | Oxy USA Inc | Houston, TX 77046 | Oil & Gas Operator | Oct 2025 |
| 20 | Oxy USA WTP LP | Houston, TX 77046 | Oil & Gas Operator | Oct 2025 |
| 21 | Oxyrock Operating, LLC | Houston, TX 77046 | Oil & Gas Operator | Oct 2025 |
Production numbers shown above are only for Glasscock County, TX and for the production period listed.