| 1 | OASIS UNIT | Karnes County, TX | Oil & Gas Property | Jan 2025 |
| 2 | OETKEN 01 0 | Karnes County, TX | Oil & Gas Property | Jan 2025 |
| 3 | OLINICK | Karnes County, TX | Oil & Gas Property | Jan 2025 |
| 4 | OLSON ESSE-KENNEDY SA | Karnes County, TX | Oil & Gas Property | Jan 2025 |
| 5 | OLSON-ESSE UNIT | Karnes County, TX | Oil & Gas Property | Jan 2025 |
| 6 | OPEILA | Karnes County, TX | Oil & Gas Property | Jan 2025 |
| 7 | OPIELA | Karnes County, TX | Oil & Gas Property | Jan 2025 |
| 8 | OPIELA UNIT | Karnes County, TX | Oil & Gas Property | Jan 2025 |
| 9 | ORR A | Karnes County, TX | Oil & Gas Property | Jan 2025 |
| 10 | ORR RANCH UNIT | Karnes County, TX | Oil & Gas Property | Sep 2024 |
| 11 | ORR UNIT | Karnes County, TX | Oil & Gas Property | Jan 2025 |
| 12 | ORTON UNIT | Karnes County, TX | Oil & Gas Property | Jan 2025 |
| 13 | OVERBY C. J | Karnes County, TX | Oil & Gas Property | Apr 2015 |
| 14 | OWENS UNIT A | Karnes County, TX | Oil & Gas Property | Jan 2025 |
| 15 | OXFORD DAVIDSON-OXFORD PSA | Karnes County, TX | Oil & Gas Property | Jan 2025 |
| 16 | OXFORD UNIT | Karnes County, TX | Oil & Gas Property | Jan 2025 |
| 17 | OXFORD WITTE-CREEL MIXON SA | Karnes County, TX | Oil & Gas Property | Jan 2025 |
| 18 | OXFORD-WITTE UNIT | Karnes County, TX | Oil & Gas Property | Jan 2025 |