| TXL D O-10-34586 | Whiting Oil and Gas Corporation only | TXL (San Andres) | Ector | 2 | 38.7K | 23.6K | Jul 1995 – Dec 2015 |
| Parker O-10-20239 | Acoma Operating, LLC only | TXL (Tubb) | Ector | 2 | 38.7K | 107K | Jan 1993 – Apr 2026 |
| Gina O-10-40689 | XTO Energy Inc. only | Sallie Ann (Spraberry-Wolfcamp) | Ector | 1 | 38.6K | 46.5K | Dec 2010 – Nov 2012 |
| Speer, R. H. O-10-14278 | Baker Operating, Inc. only | Donnelly (San Andres) | Ector | 4 | 38.6K | 19 | Jan 1993 – Apr 2026 |
| TXL O-10-29564 | Andector Exploration Company only | TXL (Devonian) | Ector | 1 | 38.2K | 84.1K | Jan 1993 – Sep 2015 |
| Ector -AG- Fee O-10-17490 | Diamondback E&P LLC only | Moose (Wolfcamp) | Ector | 1 | 38.2K | 122K | Jan 1993 – Jun 2015 |
| Midland Farms Company -E- O-10-30059 | Fasken Oil and Ranch, Ltd. only | Fasken (Penn.) | Ector | 4 | 38.1K | 422K | Jan 1993 – Jun 2021 |
| Connell, W. E., NCT-2 O-10-13824 | Cross Timbers Energy, LLC only | Metz (Glorietta) | Ector | 1 | 38.1K | 19.1K | Jan 1993 – Oct 2019 |
| Fraser, G. C. -D- NCT-1 O-10-6990 | Apache Corporation only | TXL (Ellenburger) | Ector | 1 | 38.1K | 23.3K | Jan 1993 – Jul 1999 |
| Williamson, Jessie May O-10-18623 | Raptor Resources, Inc. only | Goldsmith, N. (San Andres, Con.) | Ector | 8 | 38K | 283K | Jan 1993 – Apr 2026 |
| Millie C O-10-51381 | Diamondback E&P LLC only | Spraberry (Trend Area) | Crane | 6 | 38K | 204K | Jul 2018 – Apr 2026 |
| Cummins "P" O-10-23671 | Octane Energy Operating, LLC only | Goldsmith, N. (San Andres, Con.) | Ector | 3 | 38K | 472K | Jan 1993 – Apr 2026 |
| TXL 'P' O-10-37059 | Formentera Operations LLC only | Goldsmith (Clear Fork) | Ector | 4 | 37.8K | 142K | Feb 2003 – Apr 2026 |
| Sandy Sue O-10-33992 | Acoma Operating, LLC only | Cowden (Cisco) | Ector | 1 | 37.8K | 14.4K | Oct 1993 – Sep 2025 |
| Pate O-10-43851 | Scout Energy Management LLC only | Goldsmith (Pennsylvanian) | Ector | 1 | 37.7K | 35.2K | May 2013 – Apr 2026 |
| Depco-Slator -24- O-10-36903 | Scout Energy Management LLC only | Goldsmith | Ector | 2 | 37.4K | 28.1K | Jul 2002 – Jun 2017 |
| Wheeler, R. A. O-10-31889 | Formentera Operations LLC only | Wheeler (Waddell) | Ector | 1 | 37.3K | 101K | Jan 1993 – Oct 2024 |
| Cowden, J. F. O-10-231 | Texaco E & P Inc. only | Andector (Ellenburger) | Ector | 3 | 37.3K | 158K | Jul 1995 – Oct 2000 |
| Blakeney, B. H., -N- O-10-18920 | Scout Energy Management LLC only | Goldsmith, East (Glorieta) | Ector | 2 | 37.3K | 3.63K | Jan 1993 – Jul 1999 |
| Blakeney -32- O-10-25521 | Petex only | Cowden, North | Ector | 6 | 37.2K | 102K | Jan 1993 – Aug 2022 |
| Steakley O-10-39841 | Crescent Energy Operating, LLC only | Goldsmith (Clear Fork) | Ector | 8 | 37.2K | 74.2K | Jan 2010 – Dec 2018 |
| Opie C O-10-44490 | Diamondback E&P LLC only | Sallie Ann (Spraberry-Wolfcamp) | Ector | 2 | 36.9K | 85.2K | Feb 2014 – Sep 2024 |
| Kimberly O-10-44841 | Scout Energy Management LLC only | Goldsmith (Clear Fork) | Ector | 1 | 36.6K | 139K | Oct 2013 – Apr 2026 |
| Henderson A O-10-32219 | OXY USA Inc. only | Addis (Devonian) | Ector | 1 | 36.6K | 89.6K | Jan 1993 – Sep 1997 |
| Fasken, David -BH- O-10-27399 | Fasken Oil and Ranch, Ltd. only | Fasken, South (Wolfcamp) | Ector | 1 | 36.6K | 94K | Jan 1993 – Mar 2026 |
| Fasken, David -BG- O-10-25672 | Fasken Oil and Ranch, Ltd. only | Fasken, S. (Atoka) | Ector | 2 | 36.6K | 408K | Jan 1993 – Dec 2015 |
| Fee -ZG- O-10-28802 | Fasken Oil and Ranch, Ltd. only | Fasken (Penn.) | Ector | 10 | 36.5K | 1.26M | Jan 1993 – Jan 2020 |
| Slator -E- O-10-11585 | Apache Corporation only | TXL (San Andres) | Ector | 6 | 36.5K | 201K | Jan 1993 – Feb 2018 |
| Paul Moss Devonian O-10-39941 | R3 Operating Corporation only | Cowden, South (Dev.) | Ector | 1 | 36.3K | 95.7K | Oct 1999 – Jan 2021 |
| Slator, J.D. "B" O-10-34104 | Aghorn Operating, Inc. only | TXL (Silurian) | Ector | 1 | 36.2K | 370K | Jan 1994 – Jan 2019 |
| T. X. L. -D- O-10-6933 | Apache Corporation only | TXL (Devonian) | Ector | 4 | 36.2K | 305K | Jan 1993 – Sep 2015 |
| Kloh B-39 O-10-36050 | Miltex Oil Company only | Slator (Devonian) | Ector | 1 | 36.1K | 500K | Jul 1999 – Apr 2026 |
| Cowden, W.E. "D" O-10-24539 | Sheridan Production Company, LLC only | Cowden, South (Canyon 8790) | Ector | 1 | 36.1K | 18.2K | Jan 1993 – May 2014 |
| Smith O-10-32178 | BTA Oil Producers, LLC only | Cowden, North | Ector | 1 | 36K | 5.39K | Jan 1993 – Sep 2009 |
| Burnett -RF- O-14-2100 | Large Operating LLC only | Panhandle Hutchinson County Fld. | Hutchinson | 24 | 35.9K | 660K | Jan 1993 – Apr 2026 |
| Cummins HE J O-10-48721 | Raptor Resources, Inc. only | Goldsmith (Clear Fork) | Ector | 1 | 35.9K | 133K | Jun 2017 – Apr 2026 |
| Parker Minerals 18D O-10-40104 | Acoma Operating, LLC only | Goldsmith (Clear Fork) | Ector | 3 | 35.7K | 68.3K | Apr 2010 – Feb 2026 |
| TXL-CF O-10-31193 | Baker Operating, Inc. only | Goldsmith (5600) | Ector | 1 | 35.5K | 44.1K | Jan 1993 – Oct 2006 |
| Cummins -G- O-10-20627 | OXY USA WTP EOR, LLC only | Goldsmith, W. (San Andres) | Ector | 2 | 35.5K | 114K | Jan 1993 – Dec 2019 |
| Barrow, Augusta O-10-35412 | Formentera Operations LLC only | Headlee, N. (Canyon) | Ector | 1 | 34.9K | 17.2K | Jun 1997 – Apr 2026 |
| Ector -G- Fee O-10-9554 | Pen-Tex Production Co. Inc. only | Harper | Ector | 6 | 34.9K | 80 | Jan 1993 – Apr 2026 |
| Ohio-Slator O-10-14402 | Petroplex Energy Inc. only | TXL (Tubb) | Ector | 1 | 34.7K | 27K | Jan 1993 – Apr 2026 |
| Cowden 14 O-10-32140 | Aghorn Operating, Inc. only | Harper (Glorieta) | Ector | 2 | 34.7K | 12.8K | Jan 1993 – Feb 2026 |
| TXL W O-10-37585 | Baker Operating, Inc. only | TXL (Devonian) | Ector | 1 | 34.5K | 101K | Jan 2005 – Apr 2026 |
| Cowden AA O-10-32074 | OXY USA Inc. only | Addis (Ellenburger) | Ector | 1 | 34.5K | 49.5K | Jan 1993 – Feb 2011 |
| Alta-Williamson -A- O-10-31509 | Phoenix Hydrocarbons Operating only | Goldsmith (5600) | Ector | 2 | 34.3K | 63.2K | Jan 1993 – Oct 2006 |
| Cowden, R. B. - AB - O-10-34171 | Octane Energy Operating, LLC only | Goldsmith, N. (San Andres, Con.) | Ector | 2 | 34.3K | 94.7K | Mar 1994 – Jul 2024 |
| Bradley 1 O-10-48932 | Adventure Operating Company, LLC only | Cowden, South | Ector | 1 | 34.1K | 21.9K | May 2017 – Mar 2019 |
| Cowden O-10-29577 | Clear Fork, Incorporated only | Cowden, South (Canyon 8790) | Ector | 1 | 33.9K | 81.1K | Jan 1993 – Oct 2003 |
| Debbie O-10-42604 | Scout Energy Management LLC only | Goldsmith (Clear Fork) | Ector | 3 | 33.9K | 137K | Apr 2012 – Apr 2026 |