| North Cowden Unit #131542-135-35542 | Occidental Permian Ltd. only | Ector, TXCowden North | PluggedOil | 5,125 | May 12, 1987 | — | — |
| North Cowden Unit #131442-135-35543 | Occidental Permian Ltd. only | Ector, TXCowden North | ActiveOil | 4,720 | May 12, 1987 | — | — |
| North Cowden Unit #131842-135-35544 | Occidental Permian Ltd. only | Ector, TXCowden North | PluggedOil | 5,085 | May 12, 1987 | — | — |
| Goldsmith C. A. Etal #605W42-135-00983 | XTO Energy Inc. only | Ector, TXGoldsmith (5600) | PluggedOil | 5,805 | May 11, 1987 | — | — |
| North Cowden Unit #1311W42-135-35546 | Occidental Permian Ltd. only | Ector, TXCowden North | ActiveInjection | 4,668 | May 8, 1987 | — | — |
| North Cowden Unit #1312W42-135-35547 | Occidental Permian Ltd. only | Ector, TXCowden North | ActiveInjection | 4,716 | May 8, 1987 | — | — |
| Cahill T. G. -B- #242-135-35540 | Formentera Operations LLC only | Ector, TXWheeler (Wolfcamp) | ActiveOil | 10,583 | May 7, 1987 | — | — |
| Susie -a- #542-135-35539 | Jay Management Company LLC only | Ector, TXGoldsmith N. (San Andres Con.) | ActiveOil | 4,510 | May 4, 1987 | — | — |
| South Foster Unit #18642-135-35519 | Occidental Permian Ltd. only | Ector, TXFoster | Shut inOil | 4,409 | May 1, 1987 | — | — |
| Johnson J.L. O #842-135-35534 | OXY USA Inc. only | Ector, TXCowden North (Canyon) | Shut inOil | 9,400 | Apr 29, 1987 | — | — |
| Johnson -B-37- #142-135-35535 | Slant Operating LLC only | Ector, TXCowden North (Canyon) | PluggedOil | 9,500 | Apr 27, 1987 | — | — |
| Johnson -B- 48 #642-135-35537 | Slant Operating LLC only | Ector, TXCowden North (Canyon) | PluggedOil | 9,500 | Apr 27, 1987 | — | — |
| Johnson -B- 48 #542-135-35538 | Slant Operating LLC only | Ector, TXCowden North (Canyon) | PluggedOil | 9,500 | Apr 27, 1987 | — | — |
| Jennifer (Queen) Unit #24WI42-135-35531 | Richland Resources Corporation only | Ector, TXConcho Bluff North (Queen) | ActiveInjection | 4,600 | Apr 24, 1987 | — | — |
| Jennifer (Queen) Unit #3242-135-35532 | Richland Resources Corporation only | Ector, TXConcho Bluff North (Queen) | ActiveOil | 4,700 | Apr 24, 1987 | — | — |
| Jennifer (Queen) Unit #2842-135-35533 | Richland Resources Corporation only | Ector, TXConcho Bluff North (Queen) | ActiveOil | 4,602 | Apr 24, 1987 | — | — |
| North Cowden Unit #128842-135-35525 | Occidental Permian Ltd. only | Ector, TXCowden North | Shut inOil | 4,675 | Apr 21, 1987 | — | — |
| North Cowden Unit #128942-135-35526 | Occidental Permian Ltd. only | Ector, TXCowden North | ActiveOil | 4,693 | Apr 21, 1987 | — | — |
| North Cowden Unit #129442-135-35527 | Occidental Permian Ltd. only | Ector, TXCowden North | Shut inOil | 4,775 | Apr 21, 1987 | — | — |
| North Cowden Unit #130542-135-35528 | Occidental Permian Ltd. only | Ector, TXCowden North | ActiveOil | 4,600 | Apr 21, 1987 | — | — |
| North Cowden Unit #130642-135-35529 | Occidental Permian Ltd. only | Ector, TXCowden North | ActiveOil | 5,025 | Apr 21, 1987 | — | — |
| North Cowden Unit #131042-135-35530 | Occidental Permian Ltd. only | Ector, TXCowden North | Shut inOil | 4,713 | Apr 21, 1987 | — | — |
| McNamara Ruth #142-135-35524 | Amoco Production Company only | Ector, TXRatliff N. (Wolfcamp) | PluggedOil | 10,200 | Apr 20, 1987 | — | — |
| Phillips Edwards #142-135-35523 | Germany Operating Company only | Ector, TXEdwards West (Canyon) | PluggedOil | 9,200 | Apr 17, 1987 | — | — |
| Cowden Ranch -7- #542-135-35520 | Rust Oil Corp. only | Ector, TXCowden (Penn Detrital) | Shut inOil | 9,000 | Apr 14, 1987 | — | — |
| East Harper Unit #21842-135-35428 | Aghorn Operating Inc. only | Ector, TXHarper | Shut inOil | 4,500 | Apr 13, 1987 | — | — |
| TXL South Unit #211142-135-35505 | Formentera Operations LLC only | Ector, TXTXL (Tubb) | Shut inOil | 6,450 | Apr 9, 1987 | — | — |
| Parker #142-135-35517 | Alleder Inc. only | Ector, TXHarper | PluggedOil | 4,500 | Apr 6, 1987 | — | — |
| Witcher J. E. #8242-135-35501 | Occidental Permian Ltd. only | Ector, TXFoster | Shut inOil | 4,231 | Apr 3, 1987 | — | — |
| Witcher J. E. #8342-135-35502 | Occidental Permian Ltd. only | Ector, TXFoster | PluggedOil | 4,625 | Apr 3, 1987 | — | — |
| East Harper Unit #30042-135-35429 | Aghorn Operating Inc. only | Ector, TXHarper | ActiveOil | 4,500 | Mar 31, 1987 | — | — |
| South Foster Unit #18542-135-35513 | Occidental Permian Ltd. only | Ector, TXFoster | PluggedOil | 4,717 | Mar 31, 1987 | — | — |
| Edwards Will P. -a- #2 U42-135-03599 | Apache Corporation only | Ector, TXWheeler (Wolfcamp) | PluggedOil | 10,614 | Mar 30, 1987 | — | — |
| Witcher J. E. #6142-135-30616 | Occidental Permian Ltd. only | Ector, TXFoster | PluggedOil | 9,500 | Mar 30, 1987 | — | — |
| Witcher J. E. #6242-135-30643 | Occidental Permian Ltd. only | Ector, TXFoster | Shut inOil | 9,190 | Mar 30, 1987 | — | — |
| Witcher J. E. #6642-135-31053 | Occidental Permian Ltd. only | Ector, TXFoster | Shut inOil | 9,050 | Mar 30, 1987 | — | — |
| Midland Farms #1442-135-35511 | Aghorn Operating Inc. only | Ector, TXCowden North | Shut inOil | 4,855 | Mar 30, 1987 | — | — |
| North Cowden Unit #123542-135-35514 | Occidental Permian Ltd. only | Ector, TXCowden North | ActiveInjection | 4,530 | Mar 30, 1987 | — | — |
| North Cowden Unit #120442-135-35515 | Occidental Permian Ltd. only | Ector, TXCowden North | ActiveOil | 4,669 | Mar 30, 1987 | — | — |
| North Cowden Unit #123642-135-35516 | Occidental Permian Ltd. only | Ector, TXCowden North | PluggedOil | 4,900 | Mar 30, 1987 | — | — |
| Midland Farms #1342-135-35512 | Aghorn Operating Inc. only | Ector, TXCowden North | Shut inOil | 4,760 | Mar 27, 1987 | — | — |
| South Foster Unit #18442-135-35492 | Occidental Permian Ltd. only | Ector, TXFoster | PluggedOil | 4,800 | Mar 25, 1987 | — | — |
| South Foster Unit #18042-135-35493 | Occidental Permian Ltd. only | Ector, TXFoster | PluggedOil | 4,800 | Mar 25, 1987 | — | — |
| South Foster Unit #17942-135-35494 | Occidental Permian Ltd. only | Ector, TXFoster | PluggedOil | 4,800 | Mar 25, 1987 | — | — |
| South Foster Unit #18342-135-35495 | Occidental Permian Ltd. only | Ector, TXFoster | PluggedOil | 4,800 | Mar 25, 1987 | — | — |
| Midland Farms -AV- #542-135-33278 | Apache Corporation only | Ector, TXFasken (Penn.) | PluggedOil | 11,500 | Mar 23, 1987 | — | — |
| Fraser G. C. -F- #142-135-05397 | Baker Operating Inc. only | Ector, TXGoldsmith (Clear Fork) | Shut inOil | 5,600 | Mar 18, 1987 | — | — |
| Penwell Unit #137242-135-35506 | Ctoc Energy LLC only | Ector, TXPenwell | Shut inOil | 3,920 | Mar 18, 1987 | — | — |
| Penwell Unit #233442-135-35507 | Ctoc Energy LLC only | Ector, TXPenwell | Shut inOil | 3,900 | Mar 18, 1987 | — | — |
| Penwell Unit #237642-135-35508 | Ctoc Energy LLC only | Ector, TXPenwell | Shut inOil | 3,900 | Mar 18, 1987 | — | — |