| Cowden Elliott F. -a- #177W42-135-35839 | Occidental Permian Ltd. only | Ector, TXCowden South (Canyon 8790) | Shut inOil | 9,279 | Feb 18, 1988 | — | — |
| Williamson -B- #242-135-35837 | Jay Management Company LLC only | Ector, TXGoldsmith (Clear Fork) | ActiveOil | 5,850 | Feb 17, 1988 | — | — |
| Alta-Williamson -a- #242-135-35838 | Jay Management Company LLC only | Ector, TXGoldsmith (Clear Fork) | ActiveOil | 5,854 | Feb 17, 1988 | — | — |
| North Cowden Unit #1326W42-135-35834 | Occidental Permian Ltd. only | Ector, TXCowden North | PluggedOil | 5,000 | Feb 16, 1988 | — | — |
| North Cowden Unit #1331W42-135-35835 | Occidental Permian Ltd. only | Ector, TXCowden North | Shut inOil | 4,864 | Feb 16, 1988 | — | — |
| North Cowden Unit #1361W42-135-35836 | Occidental Permian Ltd. only | Ector, TXCowden North | ActiveInjection | 4,345 | Feb 16, 1988 | — | — |
| Colbert E. K. #1042-135-35832 | Aghorn Operating Inc. only | Ector, TXCowden South | Shut inOil | 4,692 | Feb 11, 1988 | — | — |
| Emmons Unit #20842-135-35830 | Aghorn Operating Inc. only | Ector, TXCowden South | PluggedOil | 4,800 | Feb 10, 1988 | — | — |
| Emmons Unit #128W42-135-35831 | Aghorn Operating Inc. only | Ector, TXCowden South | Shut inOil | 4,750 | Feb 10, 1988 | — | — |
| Thomas a #342-135-06957 | OXY USA WTP LP only | Ector, TXTXL (Tubb) | PluggedOil | 9,840 | Feb 9, 1988 | — | — |
| Cowden Ranch -7- #742-135-35825 | Rust Oil Corp. only | Ector, TXCowden (Cisco) | ActiveOil | 8,955 | Feb 5, 1988 | — | — |
| North Cowden Unit #1394W42-135-35809 | Occidental Permian Ltd. only | Ector, TXCowden North | ActiveInjection | 4,556 | Feb 3, 1988 | — | — |
| North Cowden Unit #1343W42-135-35810 | Occidental Permian Ltd. only | Ector, TXCowden North | ActiveInjection | 4,408 | Feb 3, 1988 | — | — |
| North Cowden Unit #1339W42-135-35811 | Occidental Permian Ltd. only | Ector, TXCowden North | ActiveInjection | 4,425 | Feb 3, 1988 | — | — |
| North Cowden Unit #1322W42-135-35812 | Occidental Permian Ltd. only | Ector, TXCowden North | ActiveInjection | 4,617 | Feb 3, 1988 | — | — |
| North Cowden Unit #132142-135-35813 | Occidental Permian Ltd. only | Ector, TXCowden North | PluggedOil | 5,000 | Feb 3, 1988 | — | — |
| North Cowden Unit #1323W42-135-35814 | Occidental Permian Ltd. only | Ector, TXCowden North | PluggedOil | 5,000 | Feb 3, 1988 | — | — |
| North Cowden Unit #132442-135-35815 | Occidental Permian Ltd. only | Ector, TXCowden North | ActiveOil | 4,613 | Feb 3, 1988 | — | — |
| North Cowden Unit #1325W42-135-35816 | Occidental Permian Ltd. only | Ector, TXCowden North | PluggedOil | 5,000 | Feb 3, 1988 | — | — |
| North Cowden Unit #132842-135-35817 | Occidental Permian Ltd. only | Ector, TXCowden North | Temporarily abandonedOil | 4,618 | Feb 3, 1988 | — | — |
| North Cowden Unit #132942-135-35818 | Occidental Permian Ltd. only | Ector, TXCowden North | Shut inOil | 4,606 | Feb 3, 1988 | — | — |
| North Cowden Unit #133042-135-35819 | Occidental Permian Ltd. only | Ector, TXCowden North | PluggedOil | 5,000 | Feb 3, 1988 | — | — |
| North Cowden Unit #134642-135-35820 | Occidental Permian Ltd. only | Ector, TXCowden North | Shut inOil | 4,424 | Feb 3, 1988 | — | — |
| North Cowden Unit #1349W42-135-35821 | Occidental Permian Ltd. only | Ector, TXCowden North | ActiveInjection | 4,354 | Feb 3, 1988 | — | — |
| North Cowden Unit #135042-135-35822 | Occidental Permian Ltd. only | Ector, TXCowden North | PluggedOil | 5,000 | Feb 3, 1988 | — | — |
| North Cowden Unit #136242-135-35823 | Occidental Permian Ltd. only | Ector, TXCowden North | Shut inOil | 4,383 | Feb 3, 1988 | — | — |
| North Cowden Unit #1388W42-135-35824 | Occidental Permian Ltd. only | Ector, TXCowden North | ActiveInjection | 4,569 | Feb 3, 1988 | — | — |
| Jennifer (Queen) Unit #2942-135-35798 | Richland Resources Corporation only | Ector, TXConcho Bluff North (Queen) | ActiveOil | 4,640 | Feb 1, 1988 | — | — |
| South Foster Unit #19042-135-35806 | Occidental Permian Ltd. only | Ector, TXFoster | PluggedOil | 4,850 | Feb 1, 1988 | — | — |
| South Foster Unit #19242-135-35807 | Occidental Permian Ltd. only | Ector, TXFoster | Shut inOil | 4,352 | Feb 1, 1988 | — | — |
| South Foster Unit #19142-135-35808 | Occidental Permian Ltd. only | Ector, TXFoster | ActiveOil | 4,350 | Feb 1, 1988 | — | — |
| TXL #142-135-35207 | Chisos Operating Inc. only | Ector, TXSlator (San Andres) | PluggedOil | 6,000 | Jan 28, 1988 | — | — |
| Fasken Unit -14- #342-135-04927 | Fasken Oil and Ranch Ltd. only | Ector, TXFasken S. (Fusselman) | PluggedOil | 13,050 | Jan 27, 1988 | — | — |
| South Foster Unit #18842-135-35799 | Occidental Permian Ltd. only | Ector, TXFoster | ActiveOil | 4,309 | Jan 27, 1988 | — | — |
| South Foster Unit #18942-135-35800 | Occidental Permian Ltd. only | Ector, TXFoster | ActiveOil | 4,309 | Jan 27, 1988 | — | — |
| South Foster Unit #19342-135-35801 | Occidental Permian Ltd. only | Ector, TXFoster | Shut inOil | 4,358 | Jan 27, 1988 | — | — |
| South Foster Unit #194WS42-135-35802 | Occidental Permian Ltd. only | Ector, TXFoster | ActiveWater Supply | 4,351 | Jan 27, 1988 | — | — |
| South Foster Unit #19542-135-35803 | Occidental Permian Ltd. only | Ector, TXFoster | ActiveOil | 4,350 | Jan 27, 1988 | — | — |
| North Cowden Unit #133742-135-35804 | Occidental Permian Ltd. only | Ector, TXCowden North | ActiveOil | 4,383 | Jan 27, 1988 | — | — |
| North Cowden Unit #132742-135-35805 | Occidental Permian Ltd. only | Ector, TXCowden North | ActiveOil | 4,550 | Jan 27, 1988 | — | — |
| Gist Unit #15642-135-35751 | Aghorn Operating Inc. only | Ector, TXFoster | PluggedOil | 4,400 | Jan 13, 1988 | — | — |
| TXL -a- #342-135-35752 | Baker Operating Inc. only | Ector, TXCowden North | ActiveOil | 4,480 | Jan 13, 1988 | — | — |
| Moss Paul -C- #2842-135-35796 | Aghorn Operating Inc. only | Ector, TXHarper | Shut inOil | 4,165 | Jan 6, 1988 | — | — |
| Goldsmith-Cummins /Deep/ Unit #19342-135-35790 | Formentera Operations LLC only | Ector, TXGoldsmith (Clear Fork) | ActiveOil | 6,400 | Jan 4, 1988 | — | — |
| Goldsmith-Cummins /Deep/ Unit #19242-135-35791 | Formentera Operations LLC only | Ector, TXGoldsmith (Clear Fork) | Shut inOil | 6,400 | Jan 4, 1988 | — | — |
| Goldsmith-Cummins /Deep/ Unit #19142-135-35792 | Formentera Operations LLC only | Ector, TXGoldsmith (Clear Fork) | Shut inOil | 6,400 | Jan 4, 1988 | — | — |
| Goldsmith-Cummins /Deep/ Unit #19042-135-35793 | Formentera Operations LLC only | Ector, TXGoldsmith (Clear Fork) | Shut inOil | 6,400 | Jan 4, 1988 | — | — |
| Goldsmith-Cummins /Deep/ Unit #18942-135-35794 | Formentera Operations LLC only | Ector, TXGoldsmith (Clear Fork) | ActiveOil | 6,600 | Jan 4, 1988 | — | — |
| Goldsmith-Cummins /Deep/ Unit #18842-135-35795 | Formentera Operations LLC only | Ector, TXGoldsmith (Clear Fork) | ActiveOil | 6,600 | Jan 4, 1988 | — | — |
| North Cowden Unit #135242-135-35770 | Occidental Permian Ltd. only | Ector, TXCowden North | Shut inOil | 4,328 | Dec 31, 1987 | — | — |