Oil & Gas Companies in Hemphill County, TX
| Company Name | Company Location | Company Type | Most Recent Production |
|---|
| 1 | O'Neill Properties, LTD. | Midland, TX 79702 | Oil & Gas Operator | Jun 2025 |
| 2 | Occidental Energy Company, Inc. | Houston, TX 77282 | Oil & Gas Operator | Jul 2021 |
| 3 | Ocean Energy, Inc. | Houston, TX 77002 | Oil & Gas Operator | Aug 2003 |
| 4 | Okie Operating Company, LTD. | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2025 |
| 5 | Oklahoma Ea II, L.L.C. | Oklahoma City, OK 73102 | Oil & Gas Operator | Dec 2004 |
| 6 | Omega Energy Corp. | Graham, TX 76450 | Oil & Gas Operator | Jun 2025 |
| 7 | Oringderff, Alma Oil Properties | Dallas, TX 75225 | Oil & Gas Operator | Mar 2012 |
| 8 | Orion Oil & Gas Properties | Amarillo, TX 79109 | Gas Operator | Oct 2000 |
| 9 | Oryx Energy Company | Dallas, TX 75221 | Oil & Gas Operator | May 2002 |
| 10 | Otc Petroleum Corporation | Nichols Hill, OK 73116 | Oil & Gas Operator | Mar 2015 |
| 11 | Overflow Energy, LLC | Booker, TX 79005 | Oil & Gas Operator | Jun 2025 |
| 12 | Ovintiv USA Inc. | Denver, CO 80202 | Oil & Gas Operator | Jun 2025 |
| 13 | Oxy USA Inc | Houston, TX 77046 | Oil & Gas Operator | Jun 2025 |
Production numbers shown above are only for Hemphill County, TX and for the production period listed.