| Goldsmith-Cummins /Deep/ Unit O-10-20543 | Formentera Operations LLC only | Goldsmith (Clear Fork) | Ector | 396 | 10.2M | 28.2M | by Jan 1993 – Aug 2026 |
| Cummins -12- O-10-210 | Condor Operating Company, LLC only | Andector (Ellenburger) | Ector | 8 | 1.26M | 658K | by Jan 1993 – Aug 2026 |
| Cummins, H. E. O-10-11783 | Formentera Operations LLC only | Goldsmith (Clear Fork) | Ector | 14 | 877K | 3.91M | by Jan 1993 – Aug 2026 |
| Cummins -B- O-10-12239 | Formentera Operations LLC only | Goldsmith (Clear Fork) | Ector | 27 | 785K | 1.92M | by Jan 1993 – Aug 2026 |
| Cummins, H. E. -C- O-10-11966 | Formentera Operations LLC only | Goldsmith (Clear Fork) | Ector | 12 | 590K | 1.75M | Jan 1996 – Aug 2026 |
| Warminster O-6-13394 | Los Hijos de Sanchez J LLC only | Jacksonville (Woodbine) | Cherokee | 1 | 318K | 570 | Mar 1995 – Sep 2024 |
| Cummins-J O-10-18617 | Hilcorp Energy Company only | Goldsmith, N. (San Andres, Con.) | Ector | 9 | 251K | 1.91M | by Jan 1993 – Aug 2026 |
| Cummins, H.E. 'K' O-10-37058 | Formentera Operations LLC only | Goldsmith (Clear Fork) | Ector | 2 | 221K | 494K | Mar 2003 – Aug 2024 |
| Cummins -13- O-10-32363 | Condor Operating Company, LLC only | Goldsmith, N. (San Andres, Con.) | Ector | 6 | 217K | 1.69M | by Jan 1993 – Aug 2026 |
| Cummins, H. E. "B" O-10-22900 | Aghorn Operating, Inc. only | Goldsmith, N. (San Andres, Con.) | Ector | 3 | 213K | 400K | by Jan 1993 – Jun 2026 |
| Cummins -J- O-10-2234 | Hilcorp Energy Company only | Goldsmith, N. (Ellenburger) | Ector | 6 | 200K | 1.18M | by Jan 1993 – Feb 2004 |
| Cummins, H.e."k" O-10-24278 | Formentera Operations LLC only | Goldsmith, N. (San Andres, Con.) | Ector | 3 | 189K | 482K | by Jan 1993 – Dec 2022 |
| Cummins -N- O-10-8955 | Hilcorp Energy Company only | Goldsmith, W. (Ellenburger) | Ector | 4 | 184K | 580K | by Jan 1993 – Aug 2026 |
| Cummins V O-10-27719 | Hilcorp Energy Company only | Goldsmith, N. (San Andres, Con.) | Ector | 2 | 174K | 400K | by Jan 1993 – Jan 2025 |
| Cummins -C- O-10-2004 | Hilcorp Energy Company only | Goldsmith | Ector | 22 | 162K | 234K | by Jan 1993 – Jul 2026 |
| Cummins "K" O-10-22727 | Octane Energy Operating, LLC only | Goldsmith, N. (San Andres, Con.) | Ector | 6 | 154K | 1.45M | by Jan 1993 – Aug 2026 |
| Minshew Unit O-13-14851 | Corda Corporation only | Quanah (Chappel 8295) | Hardeman | 4 | 146K | 39.2K | by Jan 1993 – Aug 2026 |
| Cummins, H. E. -A- O-10-35910 | Formentera Operations LLC only | Goldsmith (Clear Fork) | Ector | 4 | 140K | 652K | May 1998 – Aug 2026 |
| Cummins -15- O-10-12297 | Condor Operating Co. only | Goldsmith (5600) | Ector | 8 | 135K | 649K | by Jan 1993 – Oct 2006 |
| Cummins, R. H. O-11-61836 | Henry Petroleum Corp. only | Homann (San Andres) | Gaines | 4 | 123K | 30.1K | by Jan 1993 – Aug 2000 |
| Cummins, H. E. -E- O-10-12911 | Unitex Oil & Gas, L.L.C. only | Kermit | Winkler | 6 | 119K | 21 | by Jan 1993 – Aug 2026 |
| Mins -DD O-10-30995 | Maverick Permian LLC only | Goldsmith, N. (San Andres, Con.) | Ector | 4 | 118K | 879K | by Jan 1993 – Aug 2026 |
| Buckminster O-14-9261 | Presidio Petroleum LLC only | Pan Petro (Cleveland) | Ochiltree | 1 | 114K | 996K | Dec 2014 – Aug 2026 |
| Cummins -15- O-10-37920 | Condor Operating Company, LLC only | Goldsmith (Clear Fork) | Ector | 6 | 90.3K | 219K | Nov 2006 – Aug 2026 |
| Cummins -C- O-10-19877 | Aghorn Operating, Inc. only | Goldsmith, N. (San Andres, Con.) | Ector | 2 | 88.7K | 112K | by Jan 1993 – Apr 2026 |
| Cummins -D- O-10-2005 | Hilcorp Energy Company only | Goldsmith | Ector | 17 | 85.7K | 68.3K | by Jan 1993 – Apr 2022 |
| Wood, L. Est. O-2-8890 | Cummins & Walker Oil Co., Inc. only | Woodsboro (5600 Sand) | Refugio | 1 | 83.6K | 23K | Jun 2004 – Dec 2019 |
| Cummins -D- O-10-12440 | OXY USA WTP LP only | Goldsmith (5600) | Ector | 14 | 79.8K | 128K | by Jan 1993 – Oct 2006 |
| Cummins -11- A O-10-32446 | Killer Rabbit Fields LLC only | Henderson | Winkler | 1 | 66.1K | 90.2K | by Jan 1993 – Mar 2020 |
| Cummins -A- O-10-31177 | Baker Operating, Inc. only | Goldsmith | Ector | 2 | 62.5K | 50.2K | by Jan 1993 – Aug 2026 |
| Cummins -A- O-10-31798 | Raptor Resources, Inc. only | Goldsmith, W. (San Andres) | Ector | 2 | 62.3K | 216K | by Jan 1993 – Aug 2026 |
| Cummins, H. E. "C" O-10-22873 | Scout Energy Management LLC only | Goldsmith, W. (Devonian) | Ector | 1 | 60.8K | 124K | by Jan 1993 – Aug 2026 |
| Cummins -11-C- O-10-32421 | Stout Energy Inc. only | Henderson | Winkler | 2 | 59.7K | 54.2K | by Jan 1993 – Aug 2026 |
| Cummins -11-B- O-10-32029 | Stout Energy Inc. only | Henderson | Winkler | 4 | 56.9K | 53.2K | by Jan 1993 – Aug 2026 |
| Cummins -C- O-10-12767 | OXY USA WTP LP only | Goldsmith (Fusselman) | Ector | 1 | 51.8K | 116K | by Jan 1993 – Feb 2024 |
| Cummins M O-10-25990 | Hilcorp Energy Company only | Goldsmith, N. (San Andres, Con.) | Ector | 2 | 47.9K | 795K | by Jan 1993 – Jun 2025 |
| Cummins -B- O-10-31987 | Raptor Resources, Inc. only | Goldsmith, W. (San Andres) | Ector | 2 | 47.9K | 193K | by Jan 1993 – Aug 2026 |
| Cummins "D" O-10-22802 | Baker Operating, Inc. only | Cummins (Devonian) | Ector | 2 | 46.1K | 195K | by Jan 1993 – Jun 2004 |
| Cummins -J- O-10-2209 | OXY USA WTP LP only | Goldsmith (Fusselman) | Ector | 4 | 44.1K | 1.66M | Mar 2004 – Jan 2023 |
| Cummins, H. E. -C- O-10-31501 | Scout Energy Management LLC only | Goldsmith, W. (Fusselman) | Ector | 1 | 41.8K | 62.4K | by Jan 1993 – Mar 2026 |
| Cummins -C- O-10-13731 | Hilcorp Energy Company only | Goldsmith (Clear Fork) | Ector | 13 | 40.4K | 59.9K | by Jan 1993 – Aug 2026 |
| Cummins, H. E., -E- O-10-13249 | Forest Oil Corporation only | Goldsmith (5600) | Ector | 2 | 39.1K | 128K | by Jan 1993 – Oct 2006 |
| Wood, L. Est. O-2-8650 | Cummins & Walker Oil Co., Inc. only | Woodsboro (FS-88) | Refugio | 1 | 39K | 137K | Sep 2001 – Feb 2012 |
| Shinn, George O-2-8591 | Cummins & Walker Oil Co., Inc. only | Tuleta | Bee | 1 | 38.4K | 3.49K | Feb 2001 – Aug 2004 |
| Cummins "P" O-10-23671 | Octane Energy Operating, LLC only | Goldsmith, N. (San Andres, Con.) | Ector | 3 | 38K | 473K | by Jan 1993 – Aug 2026 |
| Cummins O-10-29966 | T&D Oil only | Kermit | Winkler | 3 | 37.5K | 943 | by Jan 1993 – Aug 2026 |
| Cummins HE J O-10-48721 | Raptor Resources, Inc. only | Goldsmith (Clear Fork) | Ector | 1 | 36.4K | 137K | Jun 2017 – Aug 2026 |
| Williams, R.S. O-2-5595 | Cummins & Walker Oil Co., Inc. only | Anaqua, North (5600) | Victoria | 4 | 36K | 12K | by Jan 1993 – Apr 2002 |
| Cummins -G- O-10-20627 | Hilcorp Energy Company only | Goldsmith, W. (San Andres) | Ector | 2 | 35.5K | 114K | by Jan 1993 – Dec 2019 |
| Welder, Minnie S. Est O-2-8491 | Cummins & Walker Oil Co., Inc. only | The Rwa (3100) | Victoria | 1 | 34.4K | 16K | Jun 1999 – Oct 2005 |