| Shrecengost D. J. #142-445-00678 | Union Oil Company of California | Terry, TXBrownfield South (Canyon) | PluggedOil | 10,500 | Jun 27, 2006 | — | — |
| S. T. 747-L SE/4 #342-702-30264 | Union Oil Company of California | Mustang IS-LB, TXMustang Island 747-L (13,600 SD) | Not on schedule | 15,500 | Mar 14, 2003 | — | — |
| Dodd, George #142-459-31110 | Union Oil Company of California | Upshur, TX | Not on schedule | 12,000 | Apr 10, 2002 | — | — |
| Williams, Margaret #142-213-30845 | Union Oil Company of California | Henderson, TX | Not on schedule | 12,500 | Jan 8, 2002 | — | — |
| S.T. 773-L N/2 NE/4 #142-702-30258 | Union Oil Company of California | Mustang IS-LB, TX | Plugged | 11,700 | Aug 31, 2001 | — | — |
| Maxfield, A. G. 38 #18HZ42-467-31051 | Union Oil Company of California | Van Zandt, TXVan (Austin Chalk) | Not on schedule | 2,810 | Mar 26, 2001 | — | — |
| Aquamarine Unit #242-057-31609 | Union Oil Company of California | Calhoun, TXWildcat | PluggedGas | 11,000 | Jul 12, 2000 | — | — |
| Cowden E. P. #342-003-84717 | Union Oil Company of California | Andrews, TXDollarhide (Clear Fork) | PluggedOil | 2,200 | Feb 23, 2000 | — | — |
| W. C. Tyrrell Unit #2 #342-371-36973 | Union Oil Company of California | Pecos, TXGomez, NW. (Wolfcamp) | Not on schedule | 11,600 | Dec 23, 1999 | — | — |
| Trees Estate "12" #442-371-36940 | Union Oil Company of California | Pecos, TXWaha (Delaware) | Not on schedule | 5,200 | Sep 20, 1999 | — | — |
| P.B.M. Unit #242-371-36898 | Union Oil Company of California | Pecos, TXGomez (Devonian) | Not on schedule | 17,200 | Feb 8, 1999 | — | — |
| Swain, W. F. 36 #1342-467-31011 | Union Oil Company of California | Van Zandt, TXVan (Austin Chalk) | Not on schedule | 2,500 | May 6, 1998 | — | — |
| Smith, L. A. 103 #1442-467-31013 | Union Oil Company of California | Van Zandt, TXVan (Austin Chalk) | Not on schedule | 2,500 | May 6, 1998 | — | — |
| Cumbie, J. 32 #842-467-31014 | Union Oil Company of California | Van Zandt, TXVan (Austin Chalk) | Not on schedule | 2,500 | May 6, 1998 | — | — |
| Southwest Andrews Unit #3101A42-003-38349 | Union Oil Company of California | Andrews, TXAndrews (Wolfcamp-Penn.) | Not on schedule | 9,300 | Jan 13, 1998 | — | — |
| Southwest Andrews Unit #7101A42-003-38350 | Union Oil Company of California | Andrews, TXAndrews (Wolfcamp-Penn.) | Not on schedule | 9,300 | Jan 13, 1998 | — | — |
| Southwest Andrews Unit #5301A42-003-38353 | Union Oil Company of California | Andrews, TXAndrews (Wolfcamp-Penn.) | Not on schedule | 9,300 | Jan 13, 1998 | — | — |
| Southwest Andrews Unit #5101A42-003-38354 | Union Oil Company of California | Andrews, TXAndrews (Wolfcamp-Penn.) | Not on schedule | 9,300 | Jan 13, 1998 | — | — |
| Southwest Andrews Unit #3718N42-003-38338 | Union Oil Company of California | Andrews, TXAndrews (Wolfcamp-Penn.) | Not on schedule | 9,300 | Dec 30, 1997 | — | — |
| Hardin-Moran, N. E. #1ST42-291-32250 | Union Oil Company of California | Liberty, TX | Plugged | 8,000 | Jun 18, 1997 | — | — |
| Fowler, E. L. 302 #2642-467-30972 | Union Oil Company of California | Van Zandt, TXVan (Austin Chalk) | Not on schedule | 3,999 | Mar 7, 1997 | — | — |
| Wheeler -2- #142-317-33242 | Union Oil Company of California | Martin, TXSpraberry (Wolfcamp Lower) | PluggedOil | 12,000 | Feb 27, 1997 | — | — |
| Cowden E.P. B #1BR42-003-08014 | Union Oil Company of California | Andrews, TXDollarhide (Devonian) | PluggedOil | 2,400 | Dec 3, 1996 | — | — |
| Wheeler #142-317-10079 | Union Oil Company of California | Martin, TXSpraberry (Trend Area) | PluggedOil | 8,079 | Sep 24, 1996 | — | — |
| Holt, O.B. "C" #1018E42-135-37223 | Union Oil Company of California | Ector, TX | Not on schedule | 14,000 | May 10, 1996 | — | — |
| Henderson E. A. #142-291-32215 | Union Oil Company of California | Liberty, TXWildcat | PluggedGas | 14,500 | Jul 26, 1995 | — | — |
| Parker, J. E. "AA" #1142-003-37631 | Union Oil Company of California | Andrews, TXParker (Grayburg, San Andres) | Not on schedule | 4,900 | Apr 25, 1995 | — | — |
| Dean #142-361-30697 | Union Oil Company of California | Orange, TXWildcat | PluggedGas | 18,000 | Mar 15, 1995 | — | — |
| Masten "J" #1R42-079-32788 | Union Oil Company of California | Cochran, TXLevelland | Not on schedule | 5,100 | Jul 13, 1994 | — | — |
| Dollarhide Unit #5507D42-003-37392 | Union Oil Company of California | Andrews, TXDollarhide (Devonian) | Not on schedule | 8,380 | Dec 23, 1993 | — | — |
| Moss Unit #504W42-135-36880 | Union Oil Company of California | Ector, TXCowden, South | Not on schedule | 4,750 | Nov 17, 1993 | — | — |
| Moss Unit #804A42-135-36879 | Union Oil Company of California | Ector, TXCowden, South | Not on schedule | 4,725 | Nov 15, 1993 | — | — |
| Holt, O.B. Jr. et al #13W42-135-36712 | Union Oil Company of California | Ector, TXCowden, North (Deep) | Not on schedule | 5,350 | Feb 22, 1993 | — | — |
| Harwell Heirs #142-213-30702 | Union Oil Company of California | Henderson, TX | Plugged | 13,500 | Oct 29, 1992 | — | — |
| Toad-C- #242-135-36400 | Union Oil Company of California | Ector, TXCowden North | PluggedOil | 5,500 | Jul 29, 1992 | — | — |
| North Riley Unit #147R42-165-34472 | Union Oil Company of California | Gaines, TXRiley, North | Not on schedule | 7,250 | Apr 16, 1992 | — | — |
| Farnsworth Unit #210542-357-31990 | Union Oil Company of California | Ochiltree, TXFarnsworth (Morrow Upper) | Plugged | 7,900 | Mar 23, 1992 | — | — |
| Farnsworth Unit #401042-357-31991 | Union Oil Company of California | Ochiltree, TXFarnsworth (Morrow Upper) | Not on schedule | 8,150 | Mar 20, 1992 | — | — |
| Lawless B. #129842-033-31465 | Union Oil Company of California | Borden, TXWildcat | PluggedOil | 7,000 | Mar 11, 1992 | — | — |
| Whitaker #142-033-31525 | Union Oil Company of California | Borden, TX | Not on schedule | 6,720 | Feb 21, 1992 | — | — |
| Shephard #142-033-31526 | Union Oil Company of California | Borden, TXWildcat | PluggedOil | 6,700 | Feb 21, 1992 | — | — |
| North Riley Unit #103042-165-34445 | Union Oil Company of California | Gaines, TXRiley, North | Not on schedule | 7,300 | Jan 31, 1992 | — | — |
| Ashton #442-003-36959 | Union Oil Company of California | Andrews, TXDeep Rock (Penn.) | Not on schedule | 9,500 | Jun 26, 1991 | — | — |
| Phillips O.A. Sr. et. al. #142-213-30685 | Union Oil Company of California | Henderson, TXWildcat | PluggedGas | 14,300 | Jun 10, 1991 | — | — |
| Cowden, E. P. #242-003-36940 | Union Oil Company of California | Andrews, TXDollarhide, SE. (Ellenburger) | Plugged | 13,500 | May 23, 1991 | — | — |
| Texaco Mineral Fee "K" #542-003-36919 | Union Oil Company of California | Andrews, TXParker (Pennsylvanian) | Not on schedule | 9,850 | Apr 1, 1991 | — | — |
| North Riley Unit #128242-165-34334 | Union Oil Company of California | Gaines, TXRiley, North | Not on schedule | 7,350 | Mar 27, 1991 | — | — |
| Knutson #142-195-31125 | Union Oil Company of California | Hansford, TX | Not on schedule | 7,500 | Mar 19, 1991 | — | — |
| Beck #142-165-34279 | Union Oil Company of California | Gaines, TX | Plugged | 8,297 | Oct 31, 1990 | — | — |
| Moss Unit #211142-135-36375 | Union Oil Company of California | Ector, TXCowden, South | Not on schedule | 4,700 | Oct 25, 1990 | — | — |