| South Foster Unit O-10-17541 | Occidental Permian Ltd. only | Foster | Ector | 224 | 12.6M | 3.31M | Jan 1993 – Apr 2026 |
| Witcher, J. E. O-10-21532 | Occidental Permian Ltd. only | Foster | Ector | 112 | 5.09M | 1.36M | Jan 1993 – Apr 2026 |
| Gist Unit O-10-19373 | Aghorn Operating, Inc. only | Foster | Ector | 155 | 4.57M | 1.18M | Jan 1993 – Feb 2026 |
| North Foster Unit O-10-16940 | Aghorn Operating, Inc. only | Foster | Ector | 119 | 3.1M | 1.34M | Jan 1993 – Feb 2026 |
| Johnson, J. L. -31- O-10-21835 | Basin Oil & Gas Operating, LLC only | Foster | Ector | 29 | 2.29M | 488K | Jan 1993 – Apr 2026 |
| Foster-Johnson Unit O-10-16793 | Aghorn Operating, Inc. only | Foster | Ector | 161 | 2.17M | 645K | Jan 1993 – Feb 2026 |
| Gist -A- O-10-1563 | Aghorn Operating, Inc. only | Foster | Ector | 37 | 1.92M | 565K | Jan 1993 – Feb 2026 |
| Foster, H. C. O-10-1538 | Aghorn Operating, Inc. only | Foster | Ector | 39 | 1.66M | 474K | Jan 1993 – Feb 2026 |
| Cowden, Elliott F., -A- O-10-1579 | Occidental Permian Ltd. only | Foster | Ector | 102 | 1.66M | 552K | Jan 1993 – Apr 2026 |
| Cowden, Elliott F., -B- O-10-1580 | Occidental Permian Ltd. only | Foster | Ector | 56 | 1.34M | 419K | Jan 1993 – Apr 2026 |
| Bagley -A- O-10-1549 | OXY USA WTP LP only | Foster | Ector | 23 | 1.25M | 402K | Jan 1993 – Apr 2026 |
| Gist -C- O-10-1565 | Aghorn Operating, Inc. only | Foster | Ector | 16 | 1.04M | 320K | Jan 1993 – Feb 2026 |
| Bagley, Vina O-10-1567 | Aghorn Operating, Inc. only | Foster | Ector | 20 | 904K | 240K | Jan 1993 – Feb 2026 |
| Brock, L. E. O-10-21471 | Laguna Petroleum Corporation only | Foster | Ector | 19 | 848K | 259K | Jan 1993 – Apr 2026 |
| Witcher, J. E. O-10-21414 | Laguna Petroleum Corporation only | Foster | Ector | 22 | 768K | 238K | Jan 1993 – Apr 2026 |
| Gist -B- O-10-1564 | Aghorn Operating, Inc. only | Foster | Ector | 22 | 718K | 159K | Jan 1993 – Feb 2026 |
| Foster-Pegues Unit O-10-22199 | Laguna Petroleum Corporation only | Foster | Ector | 23 | 709K | 229K | Jan 1993 – Apr 2026 |
| Witcher, J. E. -A- O-10-1574 | Occidental Permian Ltd. only | Foster | Ector | 20 | 647K | 222K | Jan 1993 – Apr 2026 |
| Witcher, J. E. -C- O-10-1605 | Occidental Permian Ltd. only | Foster | Ector | 9 | 629K | 178K | Jan 1993 – Apr 2026 |
| Foster, F. O-10-1581 | Occidental Permian Ltd. only | Foster | Ector | 21 | 611K | 264K | Jan 1993 – Apr 2026 |
| Foster -D- O-10-1610 | Aghorn Operating, Inc. only | Foster | Ector | 32 | 584K | 300K | Jan 1993 – Feb 2026 |
| Johnson, J. L., Unit O-10-19081 | O'Ryan Oil and Gas only | Foster | Ector | 41 | 567K | 169K | Jan 1993 – Apr 2026 |
| Foster, -C- O-10-1561 | Aghorn Operating, Inc. only | Foster | Ector | 16 | 557K | 196K | Jan 1993 – Feb 2026 |
| Foster, H. C. O-10-22782 | Laguna Petroleum Corporation only | Foster | Ector | 20 | 539K | 164K | Jan 1993 – Apr 2026 |
| Bagley, J. E. O-10-1608 | Aghorn Operating, Inc. only | Foster | Ector | 7 | 517K | 114K | Jan 1993 – Feb 2026 |
| Witcher, J. E. -7- O-10-1558 | Occidental Permian Ltd. only | Foster | Ector | 15 | 514K | 125K | Jan 1993 – Mar 2026 |
| Johnson, Lyda Mae O-10-21686 | Momentum Energy Corporation only | Foster | Ector | 3 | 448K | 28.3K | Jan 1993 – Apr 2026 |
| Witcher, J. E. -PA- O-10-1606 | Occidental Permian Ltd. only | Foster | Ector | 7 | 377K | 88.3K | Jan 1993 – Apr 2026 |
| Gist, Etal O-10-1620 | Aghorn Operating, Inc. only | Foster | Ector | 8 | 280K | 37K | Jan 1993 – Feb 2026 |
| Witcher, J. E. -PB- O-10-1607 | Occidental Permian Ltd. only | Foster | Ector | 9 | 218K | 53.7K | Jan 1993 – Apr 2026 |
| Foster, H. C. O-10-1611 | Occidental Permian Ltd. only | Foster | Ector | 12 | 211K | 94.3K | Jan 1993 – Apr 2026 |
| Bagley, J. E. O-10-1592 | Aghorn Operating, Inc. only | Foster | Ector | 7 | 199K | 74.5K | Jan 1993 – Feb 2026 |
| Johnson, J. L. O-10-1554 | Aghorn Operating, Inc. only | Foster | Ector | 14 | 110K | 17.5K | Jan 1993 – Feb 2026 |
| Cowden -I- O-10-14728 | Aghorn Operating, Inc. only | Foster | Ector | 7 | 97.8K | 339K | Jan 1993 – Feb 2026 |
| Judkins, Charlie, Etal O-10-1555 | Aghorn Operating, Inc. only | Foster | Ector | 7 | 69.6K | 10.2K | Jan 1993 – Feb 2026 |
| Palmer, R. G. O-10-33652 | Bustamante Oil Company only | Foster | Ector | 1 | 63.3K | 16K | Jan 1993 – Dec 2023 |
| Ruth G. Palmer O-10-33634 | Bustamante Oil Company only | Foster | Ector | 1 | 23.2K | 7.19K | Jan 1993 – Dec 2023 |
| Cowden,e.f. "G" O-10-24835 | Raptor Petroleum Develop, LLC only | Foster | Ector | 2 | 16K | 4.57K | Jan 1993 – Nov 2016 |
| Cowden -D- O-10-9891 | Raptor Petroleum Develop, LLC only | Foster | Ector | 1 | 15.3K | 1.82K | Jan 1993 – Jan 2019 |
| Gist B-526 Unit O-10-33381 | Kerr-McGee Corporation only | Foster | Ector | 1 | 11.2K | 8.07K | Jan 1993 – Dec 1994 |
| Cowden, E.F. "F" O-10-24848 | Endeavor Energy Resources L.P. only | Foster | Ector | 2 | 5.58K | 6.62K | Jan 1993 – Oct 1998 |
| Cowden, E.F. "F" O-10-32289 | Raptor Petroleum Develop, LLC only | Foster | Ector | 1 | 4.49K | 1.17K | Jan 1993 – Nov 2016 |
| Cowden Ranch '9' O-10-48051 | Rust Oil Corp. only | Foster | Ector | 1 | 3.7K | 0 | Aug 2016 – Sep 2023 |
| -Co- O-10-15846 | Basin Well Service of Odessa,inc only | Foster | Ector | 1 | 245 | 3.4K | Jan 1993 – Dec 1993 |
| Basin Brine Station O-10-30606 | Basic Energy Services, L.P. only | Foster | Ector | 1 | 0 | 0 | — |
| Odessa Brine Station O-10-30472 | Permian Brine Sales, Inc. only | Foster | Ector | 1 | 0 | 0 | — |
| Palmer, Ruth G. O-10-20683 | Arco Oil & Gas Co. only | Foster | Ector | 3 | 0 | 0 | — |
| Cowden 16 O-10-44463 | Boaz Energy II Operating, LLC only | Foster | Ector | 1 | 0 | 0 | — |