| Goldsmith-Cummins /Deep/ Unit O-10-20543 | Formentera Operations LLC only | Goldsmith (Clear Fork) | Ector | 396 | 10.2M | 28.1M | Jan 1993 – Jul 2026 |
| Cummins -12- O-10-210 | Condor Operating Company, LLC only | Andector (Ellenburger) | Ector | 8 | 1.26M | 655K | Jan 1993 – Jul 2026 |
| Cummins, H. E. O-10-11783 | Formentera Operations LLC only | Goldsmith (Clear Fork) | Ector | 14 | 871K | 3.9M | Jan 1993 – Jul 2026 |
| Cummins -B- O-10-12239 | Formentera Operations LLC only | Goldsmith (Clear Fork) | Ector | 27 | 784K | 1.92M | Jan 1993 – Jul 2026 |
| Cummins, H. E. -C- O-10-11966 | Formentera Operations LLC only | Goldsmith (Clear Fork) | Ector | 12 | 588K | 1.74M | Jan 1993 – Jul 2026 |
| Cummins-J O-10-18617 | OXY USA WTP EOR, LLC only | Goldsmith, N. (San Andres, Con.) | Ector | 9 | 249K | 1.9M | Jan 1993 – Jul 2026 |
| Cummins, H.E. 'K' O-10-37058 | Formentera Operations LLC only | Goldsmith (Clear Fork) | Ector | 2 | 221K | 494K | Feb 2003 – Jul 2026 |
| Cummins -13- O-10-32363 | Condor Operating Company, LLC only | Goldsmith, N. (San Andres, Con.) | Ector | 6 | 216K | 1.68M | Jan 1993 – Jul 2026 |
| Cummins, H. E. "B" O-10-22900 | Aghorn Operating, Inc. only | Goldsmith, N. (San Andres, Con.) | Ector | 3 | 212K | 399K | Jan 1993 – Jul 2026 |
| Cummins -J- O-10-2234 | OXY USA WTP EOR, LLC only | Goldsmith, N. (Ellenburger) | Ector | 6 | 200K | 1.18M | Jan 1993 – Jul 2026 |
| Cummins, H.e."k" O-10-24278 | Formentera Operations LLC only | Goldsmith, N. (San Andres, Con.) | Ector | 3 | 189K | 482K | Jan 1993 – Jul 2026 |
| Cummins -N- O-10-8955 | Hilcorp Energy Company only | Goldsmith, W. (Ellenburger) | Ector | 4 | 184K | 578K | Jan 1993 – Jul 2026 |
| Cummins V O-10-27719 | OXY USA WTP EOR, LLC only | Goldsmith, N. (San Andres, Con.) | Ector | 2 | 174K | 400K | Jan 1993 – Jul 2026 |
| Cummins -C- O-10-2004 | Hilcorp Energy Company only | Goldsmith | Ector | 22 | 162K | 234K | Jan 1993 – Jul 2026 |
| Cummins "K" O-10-22727 | Octane Energy Operating, LLC only | Goldsmith, N. (San Andres, Con.) | Ector | 6 | 154K | 1.45M | Jan 1993 – Jul 2026 |
| Cummins, H. E. -A- O-10-35910 | Formentera Operations LLC only | Goldsmith (Clear Fork) | Ector | 4 | 140K | 651K | May 1998 – Jul 2026 |
| Cummins -15- O-10-12297 | Condor Operating Co. only | Goldsmith (5600) | Ector | 8 | 135K | 649K | Jan 1993 – Feb 2007 |
| Cummins, R. H. O-11-61836 | Henry Petroleum Corp. only | Homann (San Andres) | — | 4 | 123K | 30.1K | Jan 1993 – Dec 2000 |
| Cummins, H. E. -E- O-10-12911 | Unitex Oil & Gas, L.L.C. only | Kermit | — | 6 | 118K | 21 | Jan 1993 – Jul 2026 |
| Cummins -15- O-10-37920 | Condor Operating Company, LLC only | Goldsmith (Clear Fork) | — | 6 | 89.5K | 219K | Nov 2006 – Jul 2026 |
| Cummins -C- O-10-19877 | Aghorn Operating, Inc. only | Goldsmith, N. (San Andres, Con.) | — | 2 | 88.1K | 112K | Jan 1993 – Jul 2026 |
| Cummins -D- O-10-2005 | Hilcorp Energy Company only | Goldsmith | Ector | 17 | 85.7K | 68.3K | Jan 1993 – Jul 2026 |
| Wood, L. Est. O-2-8890 | Cummins & Walker Oil Co., Inc. only | Woodsboro (5600 Sand) | Refugio | 1 | 83.6K | 23K | Jun 2004 – Jan 2021 |
| Cummins -D- O-10-12440 | OXY USA WTP LP only | Goldsmith (5600) | Ector | 14 | 79.8K | 128K | Jan 1993 – Jun 2007 |
| Cummins -11- A O-10-32446 | Killer Rabbit Fields LLC only | Henderson | Winkler | 1 | 66.1K | 90.2K | Jan 1993 – Jul 2026 |
| Cummins -A- O-10-31177 | Baker Operating, Inc. only | Goldsmith | Ector | 2 | 62.4K | 50.2K | Jan 1993 – Jul 2026 |
| Cummins -A- O-10-31798 | Raptor Resources, Inc. only | Goldsmith, W. (San Andres) | Ector | 2 | 62.1K | 216K | Jan 1993 – Jul 2026 |
| Cummins, H. E. "C" O-10-22873 | Scout Energy Management LLC only | Goldsmith, W. (Devonian) | — | 1 | 60.1K | 124K | Jan 1993 – Jul 2026 |
| Cummins -11-C- O-10-32421 | Stout Energy Inc. only | Henderson | Winkler | 2 | 59.2K | 54.2K | Jan 1993 – Jul 2026 |
| Cummins -11-B- O-10-32029 | Stout Energy Inc. only | Henderson | Winkler | 4 | 56.5K | 53.2K | Jan 1993 – Jul 2026 |
| Cummins -C- O-10-12767 | OXY USA WTP LP only | Goldsmith (Fusselman) | Ector | 1 | 51.8K | 116K | Jan 1993 – Jun 2025 |
| Cummins M O-10-25990 | OXY USA WTP EOR, LLC only | Goldsmith, N. (San Andres, Con.) | Ector | 2 | 47.9K | 795K | Jan 1993 – Jul 2026 |
| Cummins -B- O-10-31987 | Raptor Resources, Inc. only | Goldsmith, W. (San Andres) | Ector | 2 | 47.7K | 192K | Jan 1993 – Jul 2026 |
| Cummins "D" O-10-22802 | Baker Operating, Inc. only | Cummins (Devonian) | Ector | 2 | 46.1K | 195K | Jan 1993 – Jul 2026 |
| Cummins -J- O-10-2209 | OXY USA WTP LP only | Goldsmith (Fusselman) | Ector | 4 | 44.1K | 1.66M | Jan 1993 – Jun 2024 |
| Cummins, H. E. -C- O-10-31501 | Scout Energy Management LLC only | Goldsmith, W. (Fusselman) | Ector | 1 | 41.8K | 62.4K | Jan 1993 – Jul 2026 |
| Cummins -C- O-10-13731 | OXY USA WTP EOR, LLC only | Goldsmith (Clear Fork) | Ector | 13 | 39.8K | 59.2K | Jan 1993 – Jul 2026 |
| Cummins, H. E., -E- O-10-13249 | Forest Oil Corporation only | Goldsmith (5600) | Ector | 2 | 39.1K | 128K | Jan 1993 – May 2007 |
| Wood, L. Est. O-2-8650 | Cummins & Walker Oil Co., Inc. only | Woodsboro (FS-88) | Refugio | 1 | 39K | 137K | Sep 2001 – Jun 2019 |
| Shinn, George O-2-8591 | Cummins & Walker Oil Co., Inc. only | Tuleta | Bee | 1 | 38.4K | 3.49K | Feb 2001 – Jul 2005 |
| Cummins "P" O-10-23671 | Octane Energy Operating, LLC only | Goldsmith, N. (San Andres, Con.) | Ector | 3 | 38K | 472K | Jan 1993 – Jul 2026 |
| Cummins O-10-29966 | T&D Oil only | Kermit | Winkler | 3 | 37.2K | 943 | Jan 1993 – Jul 2026 |
| Williams, R.S. O-2-5595 | Cummins & Walker Oil Co., Inc. only | Anaqua, North (5600) | Victoria | 4 | 36K | 12K | Jan 1993 – May 2006 |
| Cummins HE J O-10-48721 | Raptor Resources, Inc. only | Goldsmith (Clear Fork) | Ector | 1 | 35.9K | 133K | May 2017 – Jul 2026 |
| Cummins -G- O-10-20627 | OXY USA WTP EOR, LLC only | Goldsmith, W. (San Andres) | — | 2 | 35.5K | 114K | Jan 1993 – Jul 2026 |
| Welder, Minnie S. Est O-2-8491 | Cummins & Walker Oil Co., Inc. only | The Rwa (3100) | Victoria | 1 | 34.4K | 16K | Jun 1999 – Dec 2006 |
| Cummins, H. E. -C- O-10-11678 | Anadarko Petroleum Corporation only | Goldsmith (5600) | Ector | 4 | 33.8K | 191K | Jan 1993 – Mar 2007 |
| Arco-Cummins "A" O-10-24473 | Stout Energy Inc. only | Kermit | — | 1 | 32.9K | 48.2K | Jan 1993 – Sep 2021 |
| Cummins -D- O-10-31237 | Baker Operating, Inc. only | Goldsmith | — | 3 | 32.9K | 27.9K | Jan 1993 – Jul 2026 |
| Cummins, H. E., Est. O-10-13728 | Octane Energy Operating, LLC only | Goldsmith, W. (San Andres) | — | 2 | 32K | 270K | Jan 1993 – Jul 2026 |