| Halley, S. M. O-10-2435 | Team Operating, L.L.C. only | Halley | Winkler | 256 | 1M | 4.17M | Jan 1993 – Jul 2026 |
| Halley, S. M. -B- O-10-1356 | Basin Oil & Gas Operating, LLC only | Emperor (Holt) | Winkler | 24 | 697K | 851K | Jan 1993 – Jul 2026 |
| Sealy & Smith Unit O-10-16075 | Basin Oil & Gas Operating, LLC only | Halley (Clear Fork) | Winkler | 10 | 599K | 2.35M | Jan 1993 – Jul 2026 |
| Halley, S.M. 'B' O-10-47842 | Basin Oil & Gas Operating, LLC only | Emperor (Wichita Albany) | Winkler | 8 | 594K | 3.75M | Jun 2016 – Jul 2026 |
| Cowden, E. W. O-10-21623 | Heifer Production Company LLC only | Halley | Winkler | 53 | 412K | 570K | Jan 1993 – Jul 2026 |
| McCabe, F. P. O-10-21555 | Black Arrow Operating, LLC only | Halley | Winkler | 42 | 312K | 2.17M | Jan 1993 – Jul 2026 |
| Sealy & Smith Unit O-10-15504 | Basin Oil & Gas Operating, LLC only | Halley, South (Queen Sand) | Winkler | 14 | 262K | 648K | Jan 1993 – Jul 2026 |
| Pan AM-B-Hill,m.j.-MITCHELL,TR.2 O-10-12884 | Hilcorp Energy Company only | Halley (Glorieta) | Winkler | 2 | 220K | 602K | Jan 1993 – Jul 2026 |
| Texaco Halley O-10-7727 | Team Operating, L.L.C. only | Weiner (Colby Sand) | Winkler | 16 | 204K | 281K | Jan 1993 – Jul 2026 |
| Mitchell, G. P., -B- O-10-15496 | Basin Oil & Gas Operating, LLC only | Halley, South (Queen Sand) | Winkler | 19 | 199K | 354K | Jan 1993 – Jul 2026 |
| Hill, M. J., Mrs., a/C #9 O-10-16684 | Hilcorp Energy Company only | Halley, South (Queen Sand) | — | 2 | 195K | 109K | Jan 1993 – Jul 2026 |
| Hill, M. J., Estate, Account # 5 O-10-15404 | Hilcorp Energy Company only | Halley, South (Queen Sand) | Winkler | 14 | 182K | 54.1K | Jan 1993 – Jul 2026 |
| Hill, M. J. a/C #4 O-10-13038 | Hilcorp Energy Company only | Halley (Glorieta) | Winkler | 4 | 176K | 771K | Jan 1993 – Jul 2026 |
| Halley A O-1-21138 | FW Eagle Ford I, LLC only | Eagleville (Eagle Ford-1) | Gonzales | 1 | 175K | 116K | Jul 2023 – Jul 2026 |
| Halley, S. M. -B- O-10-7726 | Basin Oil & Gas Operating, LLC only | Weiner (Colby Sand) | — | 11 | 174K | 202K | Jan 1993 – Jul 2026 |
| Halley, S. M. O-10-21563 | Penwell South Operating LLC only | Halley | — | 16 | 147K | 49.7K | Jan 1993 – Jul 2026 |
| Hill, M. J., Mrs., a/C #7 O-10-16058 | Hilcorp Energy Company only | Halley (Glorieta) | Winkler | 2 | 126K | 670K | Jan 1993 – Jul 2026 |
| Hill, M. J., Mrs., a/C #1 O-10-16658 | Hilcorp Energy Company only | Halley (Clear Fork) | Winkler | 4 | 117K | 1.31M | Jan 1993 – Jul 2026 |
| Halley, S. M. (One) O-10-7723 | Wallace Operating Company LLC only | Weiner (Colby Sand) | Winkler | 26 | 113K | 739K | Jan 1993 – Jul 2026 |
| Mitchell, G. P., -B- O-10-17144 | Basin Oil & Gas Operating, LLC only | Halley (Clear Fork) | Winkler | 3 | 108K | 473K | Jan 1993 – Jul 2026 |
| Hill, M. J. -23- O-10-26975 | Basin Oil & Gas Operating, LLC only | Halley (Clear Fork) | Winkler | 2 | 98.7K | 829K | Jan 1993 – Jul 2026 |
| Sun-Halley O-10-2437 | KRF Production Company LLC only | Halley | Winkler | 20 | 91.8K | 48 | Jan 1993 – Jul 2026 |
| Halley, S. M. O-10-1354 | Wallace Operating Company LLC only | Emperor (Holt) | Winkler | 3 | 80.2K | 63.3K | Jan 1993 – Jul 2026 |
| Continental-Halley O-10-21558 | Penwell South Operating LLC only | Halley | — | 9 | 76.6K | 43.2K | Jan 1993 – Jul 2026 |
| Morton, Tobe O-10-21545 | T&D Oil only | Halley | Winkler | 5 | 71.8K | 71 | Jan 1993 – Jul 2026 |
| Hill, M. J., Mrs., A/C#10 O-10-16810 | Hilcorp Energy Company only | Halley, South (Queen Sand) | Winkler | 3 | 71.2K | 30.5K | Jan 1993 – Jul 2026 |
| Hill, M. J. O-10-11279 | Basin Oil & Gas Operating, LLC only | Halley (Glorieta) | Winkler | 2 | 71.1K | 415K | Jan 1993 – Jul 2026 |
| Sealy Smith -B- O-10-12087 | Southern Operating, LLC only | Halley (Glorieta) | — | 1 | 68.9K | 269K | Jan 1993 – Jul 2026 |
| Morton, Tobe -D- O-10-21628 | Saxet Oil Corporation only | Halley | — | 9 | 64.7K | 140 | Jan 1993 – Jul 2026 |
| Halley "A" O-10-2430 | Eagle Capital Partners, LLC only | Halley | Winkler | 12 | 63.5K | 54 | Jan 1993 – Jul 2026 |
| Hill, M. J. -23- O-10-15342 | Basin Oil & Gas Operating, LLC only | Halley, South (Queen Sand) | Winkler | 2 | 60.9K | 86.8K | Jan 1993 – Jul 2026 |
| Woodley-Halley O-10-21565 | Penwell South Operating LLC only | Halley | — | 12 | 51K | 22 | Jan 1993 – Jul 2026 |
| Halley, S. M. -B- O-10-31754 | Basin Oil & Gas Operating, LLC only | Emperor, East (Clear Fork, Lo.) | Winkler | 3 | 49.1K | 498K | Jan 1993 – Jul 2026 |
| Morton, Tobe -C- O-10-21627 | Saxet Oil Corporation only | Halley | Winkler | 9 | 48.6K | 138 | Jan 1993 – Jul 2026 |
| Hill, M. J., Estate O-10-16004 | Hilcorp Energy Company only | Halley, South (Queen Sand) | Winkler | 8 | 46.5K | 36.5K | Jan 1993 – Jul 2026 |
| Hill, M. J. Estate O-10-2433 | Hilcorp Energy Company only | Halley | — | 2 | 42.5K | 10.8K | Jan 1993 – Jul 2026 |
| Sealy & Smith Foundation -a- 2 O-10-16318 | Extex Operating Company only | Halley (Clear Fork) | Winkler | 3 | 40.4K | 75.8K | Jan 1993 – Jul 2026 |
| M.J. Hill a/C #3 O-10-27914 | Hilcorp Energy Company only | Halley (Clear Fork) | Winkler | 4 | 40K | 267K | Jan 1993 – Jul 2026 |
| Sealy & Smith Foundation -a- 4&5 O-10-17170 | Extex Operating Company only | Halley, South (Queen Sand) | Winkler | 3 | 38.7K | 52.6K | Jan 1993 – Jul 2026 |
| Halley, S. M. -B- O-10-35920 | Basin Oil & Gas Operating, LLC only | Emperor (Wolfcamp,upper) | Winkler | 1 | 37.9K | 449K | Oct 1997 – Jul 2026 |
| Hill, M. J. O-10-2438 | Basin Oil & Gas Operating, LLC only | Halley | Winkler | 4 | 34.5K | 13.6K | Jan 1993 – Sep 2023 |
| Texaco Halley O-10-37177 | Team Operating, L.L.C. only | Emperor (Holt) | Winkler | 2 | 34.4K | 52K | Jul 2003 – Jul 2026 |
| Halley, S. M. O-10-2428 | KRF Production Company LLC only | Halley | Winkler | 9 | 34.2K | 44 | Jan 1993 – Jul 2026 |
| Hill, M. J. -22- O-10-17420 | Basin Oil & Gas Operating, LLC only | Halley, South (Queen Sand) | Winkler | 1 | 33.1K | 37.5K | Jan 1993 – Jul 2026 |
| Thompson-Cowden O-10-21564 | Penwell South Operating LLC only | Halley | — | 4 | 32.2K | 15.4K | Jan 1993 – Jul 2026 |
| Halley, S. M. O-10-15344 | Chevron U. S. A. Inc. only | Halley, Northeast (Ellenburger) | Winkler | 1 | 31.6K | 50.6K | Jan 1993 – Jan 2015 |
| Pan Am. -B- Hill-Mitchell, Tr. 2 O-10-27637 | Hilcorp Energy Company only | Halley (Clear Fork) | Winkler | 2 | 31.3K | 238K | Jan 1993 – Jul 2026 |
| Hill, Mrs. M. J. a/C #8 O-10-16216 | XTO Energy Inc. only | Halley (Glorieta) | Winkler | 1 | 31.2K | 199K | Jan 1993 – Dec 2023 |
| Cowden O-10-28325 | A&m Oil & Gas LLC only | Halley | Winkler | 2 | 29.3K | 18.6K | Jan 1993 – Jul 2026 |
| Halley, S.M. -B- O-10-37515 | Meco IV, LLC only | Emperor (Ellenburger) | Winkler | 1 | 28.6K | 1.67M | Dec 2004 – Sep 2016 |