| Smith Sealy -B- #442-495-04357 | Southern Operating LLC only | WinklerHalley South (Queen Sand) | Shut inOil | 10,470 | Aug 26, 2016 | 3 | Aug 2026 |
| Sealy & Smith Unit #1542-495-04477 | Basin Oil & Gas Operating LLC only | WinklerHalley South (Queen Sand) | ActiveOil | 5,500 | Jun 2, 2000 | 2 | Aug 2026 |
| Mitchell G. P. -B- #1542-495-31605 | Basin Oil & Gas Operating LLC only | WinklerHalley (Clear Fork) | ActiveOil | 5,374 | Sep 5, 1991 | 3 | Aug 2026 |
| Hill M. J. -23- #2742-495-30266 | Basin Oil & Gas Operating LLC only | WinklerHalley South (Queen Sand) | PluggedOil | 5,450 | May 17, 1991 | 4 | Aug 2026 |
| Hill M. J. -23-a- #3142-495-31302 | Shell Western E&P only | WinklerHalley South (Queen Sand) | PluggedOil | 5,400 | Apr 15, 1991 | 3 | Dec 2004 |
| Hill M. J. -19- #142-495-03228 | King Oil & Resources Co only | WinklerHalley South (Queen Sand) | Shut inOil | 11,710 | Mar 14, 1991 | 1 | Mar 2025 |
| Hill M. J. -23-a- #2242-495-05436 | Shell Western E&P only | WinklerHalley South (Queen Sand) | PluggedOil | 5,375 | Feb 26, 1991 | 1 | Dec 2004 |
| Andrews Unit #210E42-003-36640 | Hilcorp Energy Company only | AndrewsAndrews (Wolfcamp-Penn.) | ActiveInjection | 9,500 | Jan 26, 1990 | 1 | Aug 2026 |
| Sealy & Smith Foundation -a- 4&5 #342-495-05678 | R2Q Operating LLC only | WinklerHalley South (Queen Sand) | PluggedOil | 3,500 | Jan 25, 1990 | 2 | Aug 2026 |
| Halley S.M. #28942-495-32186 | Texaco Producing Inc. only | WinklerHalley South (Queen Sand) | PluggedOil | 3,400 | Apr 21, 1988 | 1 | — |
| Sealy & Smith -C- #890142-495-32173 | Sage Energy Company only | WinklerHalley South (Queen Sand) | PluggedOil | 3,500 | Jan 11, 1988 | 1 | — |
| Sealy & Smith -C- #900142-495-32170 | Sage Energy Company only | WinklerHalley South (Queen Sand) | PluggedOil | 3,500 | Jan 6, 1988 | 1 | — |
| Hill M. J. -22- #642-495-05421 | Basin Oil & Gas Operating LLC only | WinklerHalley South (Queen Sand) | Shut inOil | 11,661 | Aug 18, 1987 | 1 | Dec 2014 |
| Hill M. J. Estate Account # 5 #46W42-495-32086 | Hilcorp Energy Company only | WinklerHalley South (Queen Sand) | Shut inOil | 3,225 | Nov 14, 1986 | 1 | Nov 2019 |
| Sealy & Smith Unit #842-495-04470 | Basin Oil & Gas Operating LLC only | WinklerHalley South (Queen Sand) | PluggedOil | 5,500 | Apr 14, 1986 | 1 | Aug 2026 |
| Hill M. J. Mrs. a/C#10 #49W42-495-32044 | Hilcorp Energy Company only | WinklerHalley South (Queen Sand) | PluggedOil | 3,300 | Feb 24, 1986 | 1 | May 2026 |
| Sealy & Smith Unit #442-495-04468 | Basin Oil & Gas Operating LLC only | WinklerHalley South (Queen Sand) | PluggedOil | 5,500 | Jan 21, 1986 | 1 | Aug 2026 |
| Sealy & Smith Unit #1742-495-05188 | Basin Oil & Gas Operating LLC only | WinklerHalley South (Queen Sand) | PluggedOil | 5,100 | Jan 21, 1986 | 1 | Aug 2026 |
| Hill M. J. Estate Account # 5 #44W42-495-32019 | Hilcorp Energy Company only | WinklerHalley South (Queen Sand) | PluggedOil | 3,300 | Nov 19, 1985 | 1 | Nov 2019 |
| Hill M. J. Estate #48W42-495-32020 | Hilcorp Energy Company only | WinklerHalley South (Queen Sand) | PluggedOil | 3,300 | Nov 19, 1985 | 1 | Jan 2023 |
| Hill M. J. Estate Account # 5 #45W42-495-32021 | Hilcorp Energy Company only | WinklerHalley South (Queen Sand) | PluggedOil | 3,300 | Nov 19, 1985 | 1 | Nov 2019 |
| Hill M. J. Estate #47W42-495-32022 | Hilcorp Energy Company only | WinklerHalley South (Queen Sand) | PluggedOil | 3,300 | Nov 19, 1985 | 1 | Jan 2023 |
| Sealy & Smith Unit #27WS42-495-32013 | Basin Oil & Gas Operating LLC only | WinklerHalley South (Queen Sand) | PluggedOil | 1,300 | Nov 1, 1985 | 1 | Aug 2026 |
| Sealy & Smith Unit #25W42-495-31996 | Basin Oil & Gas Operating LLC only | WinklerHalley South (Queen Sand) | PluggedOil | 3,500 | Oct 23, 1985 | 1 | Aug 2026 |
| Sealy & Smith Unit #23W42-495-31997 | Basin Oil & Gas Operating LLC only | WinklerHalley South (Queen Sand) | PluggedOil | 3,500 | Oct 23, 1985 | 1 | Aug 2026 |
| Sealy & Smith Unit #24W42-495-31998 | Basin Oil & Gas Operating LLC only | WinklerHalley South (Queen Sand) | PluggedOil | 3,500 | Oct 23, 1985 | 1 | Aug 2026 |
| Sealy & Smith Unit #26W42-495-31999 | Basin Oil & Gas Operating LLC only | WinklerHalley South (Queen Sand) | ActiveInjection | 3,400 | Oct 23, 1985 | 1 | Aug 2026 |
| Sealy & Smith Unit #22W42-495-32000 | Basin Oil & Gas Operating LLC only | WinklerHalley South (Queen Sand) | ActiveInjection | 3,425 | Oct 23, 1985 | 1 | Aug 2026 |
| Sealy & Smith Unit #21W42-495-32001 | Basin Oil & Gas Operating LLC only | WinklerHalley South (Queen Sand) | PluggedOil | 3,500 | Oct 23, 1985 | 1 | Aug 2026 |
| Hill M. J. Estate Account # 5 #43W42-495-31970 | Hilcorp Energy Company only | WinklerHalley South (Queen Sand) | PluggedOil | 3,300 | Aug 30, 1985 | 1 | Nov 2019 |
| Hill M. J. Estate Account # 5 #42W42-495-31971 | Hilcorp Energy Company only | WinklerHalley South (Queen Sand) | Shut inOil | 3,240 | Aug 30, 1985 | 1 | Nov 2019 |
| Hill M. J. -23-a- #2842-495-31288 | Oryx Energy Company only | WinklerHalley (Glorieta) | PluggedOil | 5,200 | Mar 21, 1985 | 2 | — |
| Mitchell G. P. -B- #142-495-05250 | Basin Oil & Gas Operating LLC only | WinklerHalley South (Queen Sand) | PluggedOil | 3,250 | Nov 26, 1984 | 1 | Aug 2026 |
| Mitchell G. P. -B- #19W42-495-31843 | Basin Oil & Gas Operating LLC only | WinklerHalley South (Queen Sand) | ActiveInjection | 1,236 | Oct 11, 1984 | 1 | Aug 2026 |
| Mitchell G. P. -B- #26W42-495-31834 | Basin Oil & Gas Operating LLC only | WinklerHalley South (Queen Sand) | PluggedOil | 3,217 | Oct 2, 1984 | 1 | Aug 2026 |
| Mitchell G. P. -B- #20W42-495-31835 | Basin Oil & Gas Operating LLC only | WinklerHalley South (Queen Sand) | Shut inOil | 3,256 | Oct 2, 1984 | 1 | Aug 2026 |
| Mitchell G. P. -B- #21W42-495-31836 | Basin Oil & Gas Operating LLC only | WinklerHalley South (Queen Sand) | Shut inOil | 3,256 | Oct 2, 1984 | 1 | Aug 2026 |
| Mitchell G. P. -B- #23W42-495-31837 | Basin Oil & Gas Operating LLC only | WinklerHalley South (Queen Sand) | Shut inOil | 3,250 | Oct 2, 1984 | 1 | Aug 2026 |
| Mitchell G. P. -B- #22W42-495-31838 | Basin Oil & Gas Operating LLC only | WinklerHalley South (Queen Sand) | Shut inOil | 3,256 | Oct 2, 1984 | 1 | Aug 2026 |
| Mitchell G. P. -B- #24W42-495-31839 | Basin Oil & Gas Operating LLC only | WinklerHalley South (Queen Sand) | Shut inOil | 3,250 | Oct 2, 1984 | 1 | Aug 2026 |
| Mitchell G. P. -B- #18W42-495-31813 | Basin Oil & Gas Operating LLC only | WinklerHalley South (Queen Sand) | PluggedOil | 3,800 | Sep 4, 1984 | 1 | Aug 2026 |
| Mitchell G. P. -B- #16W42-495-31814 | Basin Oil & Gas Operating LLC only | WinklerHalley South (Queen Sand) | Shut inOil | 3,275 | Sep 4, 1984 | 1 | Aug 2026 |
| Mitchell G. P. -B- #17W42-495-31815 | Basin Oil & Gas Operating LLC only | WinklerHalley South (Queen Sand) | Shut inOil | 3,250 | Sep 4, 1984 | 1 | Aug 2026 |
| Hill M. J. Estate Account # 5 #13WS42-495-03870 | Hilcorp Energy Company only | WinklerHalley South (Queen Sand) | PluggedOil | 1,030 | Jul 16, 1984 | 1 | Nov 2019 |
| Hill M. J. Estate Account # 5 #41 U42-495-31739 | Hilcorp Energy Company only | WinklerHalley South (Queen Sand) | PluggedOil | 5,050 | Mar 27, 1984 | 1 | Apr 2025 |
| Hill Estate #142-495-05727 | Bopco L.P. only | WinklerHalley South (Queen Sand) | PluggedOil | 4,949 | Feb 17, 1984 | 1 | Mar 2009 |
| Sealy & Smith Foundation -a- 4&5 #542-495-31507 | R2Q Operating LLC only | WinklerHalley South (Queen Sand) | ActiveInjection | 10,600 | Oct 3, 1983 | 2 | May 2018 |
| M.J. Hill a/C #3 #37 L42-495-31398 | Hilcorp Energy Company only | WinklerHalley (Clear Fork) | PluggedOil | 8,500 | Apr 13, 1983 | 3 | Aug 2024 |
| Sealy & Smith Unit #1842-495-10295 | Basin Oil & Gas Operating LLC only | WinklerHalley South (Queen Sand) | Not on scheduleOil | 3,355 | Dec 31, 1982 | 1 | — |
| Hill M. J. Estate #1742-495-00268 | Hilcorp Energy Company only | WinklerHalley South (Queen Sand) | PluggedOil | 4,800 | May 3, 1982 | 1 | Jan 2023 |