| Cowden, J. M. R/a -B- O-10-835 | Occidental Permian Ltd. only | Cowden, North (Deep) | Ector | 23 | 3.03M | 317K | by Jan 1993 – Aug 2026 |
| Holt, O. B. -C- O-10-848 | Texland Petroleum, L.P. only | Cowden, North (Deep) | Ector | 32 | 2.52M | 336K | by Jan 1993 – Aug 2026 |
| Blakeney, B. H. /Holt Pay/ O-10-845 | Texland Petroleum, L.P. only | Cowden, North (Deep) | Ector | 24 | 1.73M | 387K | by Jan 1993 – Aug 2026 |
| Cowden, J. M. R/a -A- O-10-834 | Occidental Permian Ltd. only | Cowden, North (Deep) | Ector | 31 | 1.61M | 212K | by Jan 1993 – Aug 2026 |
| Blakeney, B. H. O-10-843 | Texland Petroleum, L.P. only | Cowden, North (Deep) | Ector | 4 | 1.33M | 101K | by Jan 1993 – Aug 2026 |
| Blakeney, B. H. -B- O-10-830 | Occidental Permian Ltd. only | Cowden, North (Deep) | Ector | 3 | 1.18M | 340K | by Jan 1993 – Aug 2026 |
| Holt, Fay O-10-826 | OXY USA Inc. only | Cowden, North (Deep) | Ector | 11 | 1.01M | 174K | by Jan 1993 – Aug 2026 |
| Cochran, W. C. O-10-828 | Texland Petroleum, L.P. only | Cowden, North (Deep) | Ector | 16 | 890K | 139K | by Jan 1993 – Aug 2026 |
| Toad O-10-32025 | Texland Petroleum, L.P. only | Cowden, North (Deep) | Ector | 13 | 822K | 251K | by Jan 1993 – Aug 2026 |
| Blakeney, B. H. -A- O-10-811 | OXY USA Inc. only | Cowden, North (Deep) | Ector | 7 | 672K | 170K | by Jan 1993 – Aug 2026 |
| Blakeney, B. H. -C- O-10-813 | OXY USA Inc. only | Cowden, North (Deep) | Ector | 10 | 544K | 121K | by Jan 1993 – Jan 2023 |
| Holt, O. B. -E- Deep O-10-838 | Occidental Permian Ltd. only | Cowden, North (Deep) | Ector | 7 | 493K | 114K | by Jan 1993 – Aug 2026 |
| Cowden, W. F. -A- O-10-837 | Occidental Permian Ltd. only | Cowden, North (Deep) | Ector | 16 | 491K | 103K | by Jan 1993 – Aug 2026 |
| Wight, L. E. -A- O-10-9002 | Bridwell Oil Co. only | Cowden, North (Deep) | Ector | 2 | 490K | 4.74K | by Jan 1993 – Aug 2026 |
| Toad-A- O-10-32438 | Texland Petroleum, L.P. only | Cowden, North (Deep) | Ector | 22 | 455K | 173K | by Jan 1993 – Aug 2026 |
| Kloh, -B- O-10-8461 | OXY USA Inc. only | Cowden, North (Deep) | Ector | 4 | 452K | 128K | by Jan 1993 – Aug 2026 |
| Blakeney-Sun O-10-842 | OXY USA Inc. only | Cowden, North (Deep) | Ector | 7 | 446K | 119K | by Jan 1993 – Aug 2026 |
| Wight, L. E. "B" O-10-22460 | OXY USA Inc. only | Cowden, North (Deep) | Ector | 7 | 437K | 161K | by Jan 1993 – Aug 2026 |
| Holt, O. B., Jr., Etal O-10-820 | Texland Petroleum, L.P. only | Cowden, North (Deep) | Ector | 11 | 404K | 130K | by Jan 1993 – Aug 2026 |
| Blakeney -OA- O-10-814 | OXY USA Inc. only | Cowden, North (Deep) | Ector | 11 | 388K | 105K | by Jan 1993 – Aug 2026 |
| Wight, Louie E. O-10-8821 | OXY USA Inc. only | Cowden, North (Deep) | Ector | 8 | 373K | 98.3K | by Jan 1993 – Feb 2020 |
| Holt -D- O-10-847 | Texland Petroleum, L.P. only | Cowden, North (Deep) | Ector | 5 | 343K | 51.9K | by Jan 1993 – Aug 2026 |
| Wight, L. E., Mrs. -4- O-10-9049 | United Oil & Shale LLC only | Cowden, North (Deep) | Ector | 16 | 334K | 45K | by Jan 1993 – Jun 2023 |
| Holt, O. B. Jr. -A- O-10-819 | Texland Petroleum, L.P. only | Cowden, North (Deep) | Ector | 2 | 302K | 24.1K | by Jan 1993 – Aug 2026 |
| Holt, O. B. -J- O-10-18360 | Occidental Permian Ltd. only | Cowden, North (Deep) | Ector | 2 | 224K | 59.2K | by Jan 1993 – Aug 2026 |
| Blakeney, B. H. -B- O-10-812 | OXY USA Inc. only | Cowden, North (Deep) | Ector | 6 | 219K | 95.9K | by Jan 1993 – Oct 2017 |
| Smith, T. A. O-10-36567 | OXY USA Inc. only | Cowden, North (Deep) | Ector | 2 | 174K | 49.9K | Mar 2001 – Aug 2026 |
| T. P. Land Trust -A- O-10-839 | Occidental Permian Ltd. only | Cowden, North (Deep) | Ector | 5 | 163K | 20.1K | by Jan 1993 – Aug 2026 |
| Wight, A. W., Mrs. -B- O-10-9072 | OXY USA Inc. only | Cowden, North (Deep) | Ector | 4 | 161K | 71.5K | by Jan 1993 – Sep 2014 |
| T. P. Land Trust -B- O-10-840 | Occidental Permian Ltd. only | Cowden, North (Deep) | Ector | 4 | 157K | 5.48K | by Jan 1993 – Aug 2026 |
| Abrams, H. J., et Al O-10-22766 | AD Astra Resources, LLC only | Cowden, North (Deep) | Ector | 1 | 151K | 3.73K | by Jan 1993 – Aug 2026 |
| TXL O-10-846 | Formentera Operations LLC only | Cowden, North (Deep) | Ector | 6 | 141K | 241K | by Jan 1993 – Oct 2019 |
| Blakeney -OB- O-10-815 | OXY USA Inc. only | Cowden, North (Deep) | Ector | 2 | 123K | 58.8K | by Jan 1993 – Aug 2026 |
| Cowden, Emma O-10-825 | Texland Petroleum, L.P. only | Cowden, North (Deep) | Ector | 5 | 119K | 6.22K | by Jan 1993 – Aug 2026 |
| Holt, O. B. O-10-20962 | Texland Petroleum, L.P. only | Cowden, North (Deep) | Ector | 1 | 103K | 12.3K | by Jan 1993 – Aug 2026 |
| TXL #2 O-10-25557 | Highmark Energy Operating, LLC only | Cowden, North (Deep) | Ector | 2 | 103K | 65.3K | by Jan 1993 – Aug 2026 |
| TXL -B- O-10-32443 | Baker Operating, Inc. only | Cowden, North (Deep) | Ector | 1 | 59.9K | 7.37K | by Jan 1993 – Aug 2026 |
| Cowden, J. M. R/a -C- O-10-836 | Occidental Permian Ltd. only | Cowden, North (Deep) | Ector | 1 | 56.1K | 2.61K | by Jan 1993 – May 2019 |
| Wight, L. E., Mrs. -A-9- O-10-9321 | United Oil & Shale LLC only | Cowden, North (Deep) | Ector | 7 | 48.2K | 20.3K | by Jan 1993 – Oct 2011 |
| Cowden, Frank R/a -C- O-10-833 | Occidental Permian Ltd. only | Cowden, North (Deep) | Ector | 3 | 46.4K | 12.9K | by Jan 1993 – Aug 2026 |
| Kloh -A- O-10-818 | Aghorn Operating, Inc. only | Cowden, North (Deep) | Ector | 2 | 39.8K | 2.11K | by Jan 1993 – Jun 2026 |
| Holt, O. B. -B- O-10-36414 | Texland Petroleum, L.P. only | Cowden, North (Deep) | Ector | 1 | 39.8K | 55 | Sep 2000 – Aug 2026 |
| Cowden, Frank R/a -B- O-10-832 | Occidental Permian Ltd. only | Cowden, North (Deep) | Ector | 3 | 38.8K | 9.55K | by Jan 1993 – Aug 2017 |
| TXL -A- O-10-31361 | Baker Operating, Inc. only | Cowden, North (Deep) | Ector | 1 | 28.2K | 8.81K | by Jan 1993 – Aug 2026 |
| Wight -A- O-10-817 | Endeavor Energy Resources L.P. only | Cowden, North (Deep) | Ector | 2 | 26.3K | 21 | by Jan 1993 – Apr 2018 |
| Holt O-10-24527 | Pure Resources, L.P. only | Cowden, North (Deep) | Ector | 1 | 25.7K | 7.59K | by Jan 1993 – Jul 2000 |
| Holt, O. B., Tract 1 O-10-821 | Pure Resources, L.P. only | Cowden, North (Deep) | Ector | 1 | 14.6K | 20 | by Jan 1993 – Oct 2000 |
| Holt, O. B. O-10-35483 | Texland Petroleum, L.P. only | Cowden, North (Deep) | Ector | 2 | 5.68K | 496 | Apr 1997 – Aug 2008 |
| Holt O-10-53702 | Texland Petroleum, L.P. only | Cowden, North (Deep) | Ector | 1 | 1.3K | 0 | Oct 2019 – Jan 2021 |
| Holt, O. B. NCT-2 O-10-35016 | Chevron U. S. A. Inc. only | Cowden, North (Deep) | Ector | 1 | 676 | 0 | Apr 1996 – Jun 1996 |