| Slat #842-135-04595 | Phillips Petroleum Company only | EctorTXL (Wolfcamp North) | PluggedOil | 7,765 | Jul 14, 1987 | 1 | — |
| TXL -a- #242-135-35593 | Baker Operating Inc. only | EctorCowden North (Deep) | ActiveOil | 5,498 | Jul 14, 1987 | 1 | Aug 2026 |
| Jennifer (Queen) Unit #3542-135-35591 | Richland Resources Corporation only | EctorConcho Bluff North (Queen) | ActiveOil | 4,655 | Jul 13, 1987 | 1 | Jul 2026 |
| Jennifer (Queen) Unit #3742-135-35592 | Richland Resources Corporation only | EctorConcho Bluff North (Queen) | ActiveOil | 4,615 | Jul 13, 1987 | 1 | Jul 2026 |
| Parker #342-135-35589 | Alleder Inc. only | EctorHarper | PluggedOil | 4,400 | Jul 10, 1987 | 1 | — |
| Goldsmith, C. A. et al #157342-135-35587 | Chevron U. S. A. Inc.permitted by · no operator of record | EctorGoldsmith (5600) | Not on schedule | 6,300 | Jul 9, 1987 | 3 | — |
| Cowden Ranch -6- #242-135-35588 | Rust Oil Corp. only | EctorCowden (Penn Detrital) | Shut inOil | 9,000 | Jul 7, 1987 | 2 | May 2019 |
| Foster #1__42-135-35586 | Terra Resources, Inc.permitted by · no operator of record | EctorEdwards, West (Canyon) | Plugged | 9,400 | Jun 29, 1987 | 1 | — |
| Cummins -U- #342-135-00144 | Hilcorp Energy Company only | EctorGoldsmith N. (San Andres Con.) | PluggedOil | 9,045 | Jun 22, 1987 | 1 | Jan 2021 |
| TXL South Unit #211242-135-35583 | Formentera Operations LLC only | EctorTXL (Tubb) | Shut inOil | 6,450 | Jun 16, 1987 | 1 | Aug 2026 |
| Foster -AA- #142-135-35584 | Occidental Permian Ltd. only | EctorCowden South (Canyon 8900) | PluggedOil | 9,600 | Jun 15, 1987 | 1 | Nov 2009 |
| Mins -DD #742-135-35582 | Maverick Permian LLC only | EctorGoldsmith N. (San Andres Con.) | PluggedOil | 4,600 | Jun 10, 1987 | 1 | Aug 2026 |
| Cowden -L- #142-135-00291 | Fina Oil & Chemical Company only | EctorGoldsmith N. (San Andres Con.) | PluggedOil | 6,197 | Jun 8, 1987 | 1 | Feb 1993 |
| Cowden L #242-135-00292 | Fina Oil & Chemical Company only | EctorGoldsmith (Clear Fork) | PluggedOil | 6,294 | Jun 8, 1987 | 1 | — |
| Cowden -a- #142-135-03185 | Fina Oil & Chemical Company only | EctorGoldsmith N. (San Andres Con.) | PluggedOil | 5,696 | Jun 8, 1987 | 1 | — |
| TXL South Unit #220942-135-35581 | Formentera Operations LLC only | EctorTXL (Tubb) | Shut inOil | 6,459 | Jun 8, 1987 | 1 | Aug 2026 |
| Parker #242-135-35578 | Alleder Inc. only | EctorHarper | PluggedOil | 4,400 | Jun 4, 1987 | 1 | Dec 1997 |
| North Cowden Unit #130842-135-35575 | Occidental Permian Ltd. only | EctorCowden North | ActiveOil | 4,558 | Jun 3, 1987 | 1 | Aug 2026 |
| North Cowden Unit #130042-135-35576 | Occidental Permian Ltd. only | EctorCowden North | ActiveOil | 4,796 | Jun 3, 1987 | 1 | Aug 2026 |
| North Cowden Unit #1303W42-135-35577 | Occidental Permian Ltd. only | EctorCowden North | PluggedOil | 5,165 | Jun 3, 1987 | 1 | Aug 2026 |
| Sprague Ruth #142-135-35579 | Reatta Energy Inc. only | EctorRatliff N. (Wolfcamp) | PluggedOil | 10,100 | Jun 3, 1987 | 1 | Jun 2013 |
| North Cowden Unit #1309W42-135-35574 | Occidental Permian Ltd. only | EctorCowden North | ActiveInjection | 4,520 | Jun 2, 1987 | 1 | Aug 2026 |
| Cummins K #542-135-00118 | Octane Energy Operating LLC only | EctorGoldsmith N. (San Andres Con.) | Shut inOil | 6,255 | Jun 1, 1987 | 1 | Aug 2026 |
| North Cowden Unit #1302W42-135-35571 | Occidental Permian Ltd. only | EctorCowden North | ActiveInjection | 4,750 | Jun 1, 1987 | 1 | Aug 2026 |
| North Cowden Unit #1296W42-135-35572 | Occidental Permian Ltd. only | EctorCowden North | PluggedOil | 5,150 | Jun 1, 1987 | 1 | Aug 2026 |
| North Cowden Unit #1291W42-135-35573 | Occidental Permian Ltd. only | EctorCowden North | PluggedOil | 5,125 | Jun 1, 1987 | 1 | Aug 2026 |
| North Cowden Unit #1295W42-135-35570 | Occidental Permian Ltd. only | EctorCowden North | ActiveInjection | 4,688 | May 26, 1987 | 1 | Aug 2026 |
| South Foster Unit #18742-135-35518 | Occidental Permian Ltd. only | EctorFoster | PluggedOil | 4,800 | May 22, 1987 | 1 | Aug 2026 |
| Johnson #142-135-35569 | Olsen Energy Inc. only | EctorDonnelly North (Grayburg) | ActiveGas | 4,450 | May 20, 1987 | 1 | Mar 2026 |
| Barrow #7__42-135-35567 | BTA Oil Producerspermitted by · no operator of record | EctorCowden, North | Plugged | 4,600 | May 19, 1987 | 1 | — |
| Gist -B- #52042-135-35562 | Aghorn Operating Inc. only | EctorFoster | ActiveOil | 4,361 | May 15, 1987 | 2 | Jun 2026 |
| Westbend Commercial SWD #142-135-35548 | Rust Oil Corp. only | EctorCowden (Penn Detrital) | ActiveInjection | 9,000 | May 14, 1987 | 2 | Jul 1998 |
| North Cowden Unit #129842-135-35550 | Occidental Permian Ltd. only | EctorCowden North | PluggedOil | 5,120 | May 14, 1987 | 1 | Aug 2026 |
| North Cowden Unit #129342-135-35552 | Occidental Permian Ltd. only | EctorCowden North | PluggedOil | 5,150 | May 14, 1987 | 1 | Aug 2026 |
| North Cowden Unit #130442-135-35556 | Occidental Permian Ltd. only | EctorCowden North | ActiveOil | 4,614 | May 14, 1987 | 1 | Aug 2026 |
| Gist -C- #52342-135-35563 | Aghorn Operating Inc. only | EctorFoster | ActiveInjection | 4,494 | May 14, 1987 | 3 | Jun 2026 |
| Gist -B- #522W42-135-35565 | Aghorn Operating Inc. only | EctorFoster | ActiveInjection | 4,371 | May 14, 1987 | 1 | Jun 2026 |
| North Cowden Unit #1290W42-135-35549 | Occidental Permian Ltd. only | EctorCowden North | ActiveInjection | 4,665 | May 13, 1987 | 1 | Aug 2026 |
| North Cowden Unit #1297W42-135-35551 | Occidental Permian Ltd. only | EctorCowden North | PluggedOil | 5,170 | May 13, 1987 | 1 | Aug 2026 |
| North Cowden Unit #1301W42-135-35554 | Occidental Permian Ltd. only | EctorCowden North | ActiveInjection | 4,686 | May 13, 1987 | 1 | Aug 2026 |
| North Cowden Unit #1292W42-135-35555 | Occidental Permian Ltd. only | EctorCowden North | Shut inOil | 4,769 | May 13, 1987 | 1 | Aug 2026 |
| North Cowden Unit #1307W42-135-35557 | Occidental Permian Ltd. only | EctorCowden North | ActiveInjection | 4,544 | May 13, 1987 | 1 | Aug 2026 |
| North Cowden Unit #1313W42-135-35558 | Occidental Permian Ltd. only | EctorCowden North | PluggedOil | 5,155 | May 13, 1987 | 1 | Aug 2026 |
| North Cowden Unit #1317W42-135-35559 | Occidental Permian Ltd. only | EctorCowden North | PluggedOil | 5,150 | May 13, 1987 | 1 | Aug 2026 |
| Gist -a- #519W42-135-35560 | Aghorn Operating Inc. only | EctorFoster | Shut inOil | 4,356 | May 13, 1987 | 1 | Jun 2026 |
| Gist -a- #518W42-135-35561 | Aghorn Operating Inc. only | EctorFoster | ActiveInjection | 4,354 | May 13, 1987 | 1 | Jun 2026 |
| Gist -a- #517W42-135-35564 | Aghorn Operating Inc. only | EctorFoster | ActiveInjection | 4,370 | May 13, 1987 | 1 | Jun 2026 |
| Gist -B- #521W42-135-35566 | Aghorn Operating Inc. only | EctorFoster | Shut inOil | 4,550 | May 13, 1987 | 1 | Jun 2026 |
| Witcher J. E. -7- #642-135-06824 | Occidental Permian Ltd. only | EctorFoster | PluggedOil | 4,215 | May 12, 1987 | 1 | Mar 2026 |
| North Cowden Unit #131642-135-35541 | Occidental Permian Ltd. only | EctorCowden North | PluggedOil | 5,170 | May 12, 1987 | 1 | Aug 2026 |