| 1 | OAKMONT-SAWGRASS | Harrison County, TX | Oil & Gas Property | Jun 2026 |
| 2 | OBANION | Harrison County, TX | Oil & Gas Property | Sep 2021 |
| 3 | OBANION | Harrison County, TX | Oil & Gas Property | Jun 2026 |
| 4 | OBANION | Harrison County, TX | Oil & Gas Property | Jul 2014 |
| 5 | OBANION A | Harrison County, TX | Oil & Gas Property | Jan 2021 |
| 6 | ONEY HENRY | Harrison County, TX | Oil & Gas Property | Jun 2026 |
| 7 | OSBORNE HEIRS | Harrison County, TX | Oil & Gas Property | May 2026 |
| 8 | OSCEOLA MCELROY HEIRS (AW) | Harrison County, TX | Oil & Gas Property | Jun 2026 |
| 9 | OSCEOLA-ELDRIDGE BIVINS (AW) 1H | Harrison County, TX | Oil & Gas Property | Jun 2026 |
| 10 | OWEN GMB | Harrison County, TX | Gas Property | Jun 2026 |
| 11 | OWEN RHB 1H | Harrison County, TX | Gas Property | Jun 2026 |
| 12 | OWENS T.B. GAS UNIT | Harrison County, TX | Oil & Gas Property | Jun 2026 |