| State-Walton #142-495-05173 | Basin Oil & Gas Operating LLC | WinklerKeystone (Consolidated) | ActiveOil | 10,653 | Jul 2, 2026 | 3 | Aug 2009 |
| Baird W. E. #131242-495-05145 | Basin Oil & Gas Operating LLC | WinklerKermit (McKee) | Temporarily abandonedGas | 10,652 | Apr 24, 2023 | 3 | Jan 2013 |
| Halley S. #70142-495-33319 | Basin Oil & Gas Operating LLC | WinklerEmperor (Miss.) | ActiveGas | 9,400 | Apr 19, 2013 | 2 | Nov 2025 |
| South Keystone /Ellen/ Unit #140242-495-01162 | Basin Oil & Gas Operating LLC | WinklerKeystone (Ellenburger) | Shut inOil | 10,008 | Aug 4, 2007 | 1 | Feb 2019 |
| Baird W. E. #1811E42-495-05124 | Basin Oil & Gas Operating LLC | WinklerKeystone (Colby) | PluggedOil | 10,639 | Jul 10, 2007 | 2 | Apr 2026 |
| Dorr State #142-475-34811 | Basin Oil & Gas Operating LLC | WardPayton (Devonian Middle) | ActiveGas | 12,200 | Jan 28, 2004 | 2 | Apr 2026 |
| Noelke -a- #1 HHZ42-371-04302 | Basin Oil & Gas Operating LLC | PecosYucca Butte (Devonian) | Temporarily abandonedGas | 10,185 | Apr 23, 2002 | 2 | Mar 2020 |
| Keystone Holt Unit #120442-495-03431 | Basin Oil & Gas Operating LLC | WinklerKeystone (Consolidated) | PluggedOil | 8,080 | Jun 29, 2001 | 1 | Apr 2026 |
| Tunis Creek Univ. Lands Unit #310ST42-371-37072 | Basin Oil & Gas Operating LLC | PecosTunis Creek(devonian) | ActiveOil | 6,795 | Apr 30, 2001 | 2 | Apr 2026 |
| Tunis Creek Univ. Lands Unit #30942-371-37061 | Basin Oil & Gas Operating LLC | PecosTunis Creek(devonian) | ActiveOil | 6,950 | Mar 8, 2001 | 1 | Apr 2026 |
| Sealy & Smith Unit #642-495-04479 | Basin Oil & Gas Operating LLC | WinklerHalley (Clear Fork) | ActiveOil | 10,410 | Aug 24, 2000 | 1 | Apr 2026 |
| Sealy & Smith Unit #7X42-495-31134 | Basin Oil & Gas Operating LLC | WinklerHalley (Clear Fork) | ActiveOil | 9,880 | Jun 9, 2000 | 2 | Apr 2026 |
| Brown-Altman Unit #342-495-30454 | Basin Oil & Gas Operating LLC | WinklerEmperor (Devonian) | Temporarily abandonedGas | 9,494 | May 26, 2000 | 4 | — |
| Tunis Creek Univ. Lands Unit #30842-371-36962 | Basin Oil & Gas Operating LLC | PecosTunis Creek(devonian) | ActiveOil | 6,960 | Feb 3, 2000 | 1 | Apr 2026 |
| Lovett H. E. #242-495-05165 | Basin Oil & Gas Operating LLC | WinklerKermit (McKee) | Temporarily abandonedGas | 10,642 | Aug 26, 1998 | 2 | May 2002 |
| Halley S. M. -B- #2342-495-05394 | Basin Oil & Gas Operating LLC | WinklerEmperor (Wolfcamp Upper) | Shut inOil | 11,325 | Sep 11, 1997 | 2 | Apr 2026 |
| Halley S. M. -B- #4142-495-32561 | Basin Oil & Gas Operating LLC | WinklerEmperor (Devonian) | ActiveGas | 9,090 | Jul 17, 1996 | 1 | Apr 2026 |
| Baird W. E. #191142-495-05110 | Basin Oil & Gas Operating LLC | WinklerKeystone (Colby) | Shut inOil | 10,659 | May 30, 1995 | 1 | Apr 2026 |
| Lavender #142-495-03445 | Basin Oil & Gas Operating LLC | WinklerKeystone (Dev-McKee Cons) | ActiveOil | 10,074 | May 20, 1993 | 1 | Jul 2025 |
| Hill M. J. #542-495-05420 | Basin Oil & Gas Operating LLC | WinklerHalley | PluggedOil | 3,316 | Aug 18, 1987 | 1 | Oct 1998 |
| Hill M. J. -22- #642-495-05421 | Basin Oil & Gas Operating LLC | WinklerHalley South (Queen Sand) | Shut inOil | 11,661 | Aug 18, 1987 | 1 | Dec 2014 |
| Tunis Creek Univ. Lands Unit #10742-371-35838 | Basin Oil & Gas Operating LLC | PecosTunis Creek(devonian) | ActiveInjection | 7,300 | Apr 25, 1986 | 1 | Apr 2026 |
| Tunis Creek Univ. Lands Unit #30742-371-35105 | Basin Oil & Gas Operating LLC | PecosTunis Creek(devonian) | Shut inOil | 7,106 | Aug 13, 1985 | 2 | Apr 2026 |
| Tunis Creek Univ. Lands Unit #105W42-371-35074 | Basin Oil & Gas Operating LLC | PecosTunis Creek(devonian) | Shut inOil | 7,200 | Jul 24, 1984 | 1 | Apr 2026 |
| Tunis Creek Univ. Lands Unit #106W42-371-35075 | Basin Oil & Gas Operating LLC | PecosTunis Creek(devonian) | ActiveInjection | 7,179 | Jul 24, 1984 | 1 | Apr 2026 |
| Tunis Creek Univ. Lands Unit #204W42-371-35065 | Basin Oil & Gas Operating LLC | PecosTunis Creek(devonian) | Shut inOil | 7,200 | Jul 20, 1984 | 1 | Apr 2026 |
| Tunis Creek Univ. Lands Unit #30642-371-35066 | Basin Oil & Gas Operating LLC | PecosTunis Creek(devonian) | Shut inOil | 7,175 | Jul 20, 1984 | 1 | Apr 2026 |
| Tunis Creek Univ. Lands Unit #305W42-371-34814 | Basin Oil & Gas Operating LLC | PecosTunis Creek(devonian) | Shut inOil | 7,253 | Mar 9, 1984 | 1 | Apr 2026 |
| Tunis Creek Univ. Lands Unit #10342-371-34690 | Basin Oil & Gas Operating LLC | PecosTunis Creek(devonian) | ActiveOil | 7,000 | Feb 13, 1984 | 1 | Apr 2026 |
| Tunis Creek Univ. Lands Unit #30442-371-34572 | Basin Oil & Gas Operating LLC | PecosTunis Creek(devonian) | ActiveOil | 6,900 | Sep 26, 1983 | 1 | Apr 2026 |
| Tunis Creek Univ. Lands Unit #30342-371-34434 | Basin Oil & Gas Operating LLC | PecosTunis Creek(devonian) | ActiveOil | 7,186 | Jun 14, 1983 | 1 | Apr 2026 |
| Tunis Creek Univ. Lands Unit #40242-371-34304 | Basin Oil & Gas Operating LLC | PecosTunis Creek(devonian) | Shut inOil | 7,200 | Apr 21, 1983 | 1 | Apr 2026 |
| Tunis Creek Univ. Lands Unit #40142-371-34299 | Basin Oil & Gas Operating LLC | PecosTunis Creek(devonian) | ActiveOil | 7,033 | Mar 31, 1983 | 1 | Apr 2026 |
| Tunis Creek Univ. Lands Unit #10242-371-34227 | Basin Oil & Gas Operating LLC | PecosTunis Creek(devonian) | ActiveOil | 7,229 | Feb 24, 1983 | 1 | Apr 2026 |
| Tunis Creek Univ. Lands Unit #30242-371-34115 | Basin Oil & Gas Operating LLC | PecosTunis Creek(devonian) | Shut inOil | 7,218 | Feb 18, 1983 | 2 | Apr 2026 |
| Tunis Creek Univ. Lands Unit #30142-371-34104 | Basin Oil & Gas Operating LLC | PecosTunis Creek(devonian) | ActiveOil | 7,200 | Nov 24, 1982 | 1 | Apr 2026 |
| Tunis Creek Univ. Lands Unit #101W42-371-34063 | Basin Oil & Gas Operating LLC | PecosTunis Creek(devonian) | ActiveInjection | 7,118 | Oct 18, 1982 | 1 | Apr 2026 |
| Brown-Altman Unit #142-495-00556 | Basin Oil & Gas Operating LLC | WinklerEmperor (Devonian) | Temporarily abandonedGas | 11,520 | — | 0 | — |
| Sealy & Smith Unit #1 L42-495-04454 | Basin Oil & Gas Operating LLC | WinklerHalley (Montoya) | Shut inOil | 12,124 | — | 0 | — |
| Halley S. M. #16542-495-04752 | Basin Oil & Gas Operating LLC | WinklerEmperor (Devonian) | ActiveGas | 11,358 | — | 0 | — |
| Baird W. E. #132342-495-05141 | Basin Oil & Gas Operating LLC | WinklerKermit (Ellenburger) | ActiveGas | 10,657 | — | 0 | — |
| Hill M. J. -23- #1142-495-05426 | Basin Oil & Gas Operating LLC | WinklerHalley (Devonian) | Temporarily abandonedGas | 10,502 | — | 0 | — |
| Brown-Altman Acct. 7 #742-495-05617 | Basin Oil & Gas Operating LLC | WinklerEmperor (Devonian) | Temporarily abandonedGas | 9,390 | — | 0 | — |
| Sealy & Smith Unit #242-495-06228 | Basin Oil & Gas Operating LLC | WinklerHalley (Devonian) | Temporarily abandonedGas | 10,400 | — | 0 | — |