| Howell R. A. 44 #942-467-30803 | Union Oil Company of California | Van Zandt, TXVan (Austin Chalk) | PluggedOil | 2,500 | Sep 28, 1990 | — | — |
| Howell R. A. 44 #1042-467-30804 | Union Oil Company of California | Van Zandt, TXVan (Austin Chalk) | PluggedOil | 3,390 | Sep 28, 1990 | — | — |
| Thompson 49 #142-467-00828 | Union Oil Company of California | Van Zandt, TXVan (Austin Chalk) | PluggedOil | 2,994 | Aug 28, 1990 | — | — |
| Southland LD & Cattle Co Unit #342-379-30140 | Union Oil Company of California | Rains, TXGreen Valley (Smackover) | PluggedGas | 14,300 | Jun 11, 1990 | — | — |
| Tunnell I. P. 300 #1442-467-30797 | Union Oil Company of California | Van Zandt, TXVan (Austin Chalk) | PluggedOil | 2,370 | Jun 5, 1990 | — | — |
| Phillips University GG #142-003-34456 | Union Oil Company of California | Andrews, TXUniversity Block 9 (Penn.) | PluggedOil | 9,500 | Feb 5, 1990 | — | — |
| Blackstock Frank 106 #60242-467-80206 | Union Oil Company of California | Van Zandt, TXVan | PluggedOil | 2,934 | Feb 2, 1990 | — | — |
| Clark N. E. 65 #542-467-00813 | Union Oil Company of California | Van Zandt, TXVan (Austin Chalk) | PluggedOil | 3,053 | Jan 9, 1990 | — | — |
| Camper B. W. 110 #142-467-00634 | Union Oil Company of California | Van Zandt, TXVan (Austin Chalk) | PluggedOil | 2,979 | Nov 10, 1989 | — | — |
| Tunnell A. R. 59 #1342-467-00685 | Union Oil Company of California | Van Zandt, TXVan (Austin Chalk) | PluggedOil | 2,962 | Nov 10, 1989 | — | — |
| Toad-C- #142-135-36119 | Union Oil Company of California | Ector, TXCowden North | PluggedOil | 5,600 | Aug 10, 1989 | — | — |
| Howell R. A. 44 #842-467-30740 | Union Oil Company of California | Van Zandt, TXVan (Austin Chalk) | PluggedOil | 2,500 | Apr 28, 1989 | — | — |
| Tunnell A. R. 59 #742-467-00719 | Union Oil Company of California | Van Zandt, TXVan (Austin Chalk) | PluggedOil | 2,959 | Feb 21, 1989 | — | — |
| Dowdle L. A. 205 #342-467-30726 | Union Oil Company of California | Van Zandt, TXVan (Austin Chalk) | PluggedOil | 2,825 | Dec 22, 1988 | — | — |
| Tunnell A. G. 8 #242-467-00432 | Union Oil Company of California | Van Zandt, TXVan (Sub-Clarksville) | PluggedOil | 2,750 | Dec 21, 1988 | — | — |
| Howell R. A. 44 #442-467-00968 | Union Oil Company of California | Van Zandt, TXVan (Austin Chalk) | PluggedOil | 2,964 | Dec 5, 1988 | — | — |
| Crim R. C. 28 #342-467-00200 | Union Oil Company of California | Van Zandt, TXVan (Austin Chalk) | PluggedOil | 2,979 | Dec 2, 1988 | — | — |
| White R.V. 500 #442-467-80102 | Union Oil Company of California | Van Zandt, TXVan (Austin Chalk) | PluggedOil | 2,775 | Dec 1, 1988 | — | — |
| Peters R. H. 29 #542-467-00186 | Union Oil Company of California | Van Zandt, TXVan (Austin Chalk) | PluggedOil | 3,114 | Aug 16, 1988 | — | — |
| Brawner -10- #1042-467-00439 | Union Oil Company of California | Van Zandt, TXVan (Austin Chalk) | PluggedOil | 2,954 | Jun 23, 1988 | — | — |
| Fowler 303 #342-467-00657 | Union Oil Company of California | Van Zandt, TXVan (Pecan Gap) | PluggedOil | 2,962 | Jun 16, 1988 | — | — |
| Brawner -10- #842-467-00438 | Union Oil Company of California | Van Zandt, TXVan (Austin Chalk) | PluggedOil | 2,954 | Jun 13, 1988 | — | — |
| Thompson 49 #1242-467-30692 | Union Oil Company of California | Van Zandt, TXVan (Austin Chalk) | PluggedOil | 2,470 | May 9, 1988 | — | — |
| Smith 104 #742-467-00497 | Union Oil Company of California | Van Zandt, TXVan (Austin Chalk) | PluggedOil | 2,989 | Feb 26, 1988 | — | — |
| Cumbie 32 #342-467-30682 | Union Oil Company of California | Van Zandt, TXVan (Austin Chalk) | PluggedOil | 2,410 | Feb 11, 1988 | — | — |
| Fowler B. M. 303 #242-467-00659 | Union Oil Company of California | Van Zandt, TXVan (Austin Chalk) | PluggedOil | 3,028 | Feb 3, 1988 | — | — |
| Tunnell A. R. 59 #142-467-00686 | Union Oil Company of California | Van Zandt, TXVan (Austin Chalk) | PluggedOil | 3,010 | Feb 3, 1988 | — | — |
| Fowler E. L. 302 #142-467-00711 | Union Oil Company of California | Van Zandt, TXVan (Austin Chalk) | PluggedOil | 2,965 | Feb 3, 1988 | — | — |
| Wells R. L. 46 #542-467-30676 | Union Oil Company of California | Van Zandt, TXVan (Austin Chalk) | PluggedOil | 2,485 | Jan 8, 1988 | — | — |
| Stewart J. C. 48 #142-467-00858 | Union Oil Company of California | Van Zandt, TXVan (Austin Chalk) | PluggedOil | 2,910 | Dec 14, 1987 | — | — |
| Tunnell I. P. 300 #342-467-00735 | Union Oil Company of California | Van Zandt, TXVan (Austin Chalk) | PluggedOil | 3,015 | Oct 23, 1987 | — | — |
| Evans Trust #142-227-34073 | Union Oil Company of California | Howard, TXParallel-Wolfe (Fusselman) | PluggedOil | 10,750 | Apr 17, 1987 | — | — |
| White C. 61 #442-467-00647 | Union Oil Company of California | Van Zandt, TXVan (Sub-Clarksville) | PluggedOil | 2,954 | Jul 23, 1986 | — | — |
| White C. 61 #742-467-30645 | Union Oil Company of California | Van Zandt, TXVan | PluggedOil | 3,500 | Apr 2, 1986 | — | — |
| Southeast Van Lewisville Unit #115342-467-00671 | Union Oil Company of California | Van Zandt, TXVan | PluggedOil | 2,927 | May 18, 1984 | — | — |
| Westbrook #142-165-32772 | Union Oil Company of California | Gaines, TXRiley (Clear Fork) | PluggedOil | 7,400 | Jan 6, 1984 | — | — |
| University 2520 #242-495-31529 | Union Oil Company of California | Winkler, TXLittle Joe (War-Wink) | PluggedOil | 5,200 | Nov 10, 1982 | — | — |
| Drachenberg #142-219-33260 | Union Oil Company of California | Hockley, TXSmyer | PluggedOil | 6,000 | Jul 30, 1981 | — | — |
| Blackstock Frank 106 #60942-467-30488 | Union Oil Company of California | Van Zandt, TXVan | PluggedOil | 3,000 | Mar 20, 1981 | — | — |
| State Lease 73380 #142-603-30161 | Union Oil Company of Californiapermit operator | Matgrda IS-SB, TX | Drilled | 6,450 | May 29, 1980 | — | — |
| University -5- #442-003-32178 | Union Oil Company of California | Andrews, TXBakke (Penn.) | PluggedOil | 9,500 | Jan 4, 1980 | — | — |
| University -5- #342-003-32179 | Union Oil Company of California | Andrews, TXBakke (Penn.) | PluggedOil | 9,500 | Jan 4, 1980 | — | — |
| University -5- #242-003-32180 | Union Oil Company of California | Andrews, TXBakke (Penn.) | PluggedOil | 9,500 | Jan 4, 1980 | — | — |
| Parker J. E. -E- #142-003-07726 | Union Oil Company of California | Andrews, TXShafter Lake (San Andres) | PluggedOil | 9,150 | Sep 21, 1979 | — | — |
| May Jewel #142-025-02442 | Union Oil Company of California | Bee, TXBlanconia (1200) | Not on scheduleGas | 4,039 | Sep 17, 1979 | — | — |
| State Lease 73379 #142-603-30137 | Union Oil Company of California | Matgrda IS-SB, TXSteamboat Pass S. (5000) | PluggedGas | 6,500 | Apr 17, 1979 | — | — |
| Winkleman -9- #1 D42-329-02071 | Union Oil Company of California | Midland, TXSpraberry (Trend Area) | PluggedOil | 10,527 | Apr 28, 1978 | — | — |
| Camper B.W. -110- #242-467-00633 | Union Oil Company of California | Van Zandt, TXVan | PluggedOil | 2,980 | Feb 17, 1978 | — | — |
| May Tom #142-025-01218 | Union Oil Company of California | Bee, TXBlanconia (4800) | PluggedGas | 4,988 | Jul 14, 1977 | — | — |
| Parker J. E. -C- #2 L42-003-02126 | Union Oil Company of California | Andrews, TXAndrews North (Strawn) | Not on scheduleOil | — | — | — | — |