| TXL -M- O-10-15952 | Formentera Operations LLC only | TXL (Devonian) | Ector | 2 | 70.8K | 464K | Jan 1993 – Apr 2026 |
| L & K Realty Co. R/a -a- Tr. 1 O-10-8074 | Production Gathering Company, LP only | Yarbrough & Allen (Devonian) | Ector | 2 | 70.5K | 31.3K | Jan 1993 – Jun 2023 |
| TXL "T" O-10-23110 | OXY USA WTP LP only | Cowden, South (Canyon 8790) | Ector | 1 | 70.3K | 148K | Jan 1993 – Apr 2026 |
| Flag Ranch B O-10-46239 | Raptor Resources, Inc. only | Goldsmith (Clear Fork) | Ector | 2 | 69.7K | 216K | Feb 2015 – Apr 2026 |
| Johnson, J. L., -A- O-10-22031 | O'Ryan Oil and Gas only | Cowden, South (Canyon 8790) | Ector | 2 | 69.6K | 89.5K | Jan 1993 – Apr 2026 |
| Judkins, Charlie, Etal O-10-1555 | Aghorn Operating, Inc. only | Foster | Ector | 7 | 69.6K | 10.2K | Jan 1993 – Feb 2026 |
| Connell, W.E. NCT-1 O-10-58185 | Cross Timbers Energy, LLC only | Penwell (Clear Fork) | Ector | 2 | 69.1K | 48.7K | Sep 2022 – Apr 2026 |
| Foil O-10-37345 | Hilcorp Energy Company only | Arbol de Nada (Devonian) | Ector | 2 | 69.1K | 425K | Jun 2004 – Apr 2026 |
| Scharbauer -PQ- Upper O-10-19299 | Octane Energy Operating, LLC only | Goldsmith, N. (San Andres, Con.) | Ector | 8 | 68.7K | 35.9K | Jan 1993 – Sep 2020 |
| Fasken Unit "14" O-10-29300 | Apache Corporation only | Fasken, South (Wolfcamp) | Ector | 2 | 68.6K | 212K | Jan 1993 – Oct 2005 |
| Cowden -F- O-10-13785 | RMR Operating, LLC only | Donnelly (San Andres) | Ector | 13 | 68.6K | 51.4K | Jan 1993 – Oct 2025 |
| Edwards-Brown -B- O-10-28930 | Baker Operating, Inc. only | Double -H- (Grayburg) | Ector | 3 | 68.6K | 114K | Jan 1993 – Apr 2026 |
| Scharbauer -H- O-10-20363 | Sundown Energy LP only | Goldsmith, N. (San Andres, Con.) | Ector | 4 | 68.5K | 24.5K | Jan 1993 – May 2019 |
| Flag Ranch D O-10-46645 | Raptor Resources, Inc. only | Goldsmith (Clear Fork) | Ector | 2 | 68.4K | 136K | Dec 2014 – Apr 2026 |
| Williamson O-10-18600 | Satanta Oil Company only | Goldsmith, N. (San Andres, Con.) | Ector | 4 | 68.4K | 292K | Jan 1993 – Apr 2026 |
| Cole O-10-32506 | Phoenix Hydrocarbons Operating only | Goldsmith (5600) | Ector | 3 | 68.4K | 100K | Jan 1993 – Oct 2006 |
| Arco -22- O-10-30892 | Hilcorp Energy Company only | Arbol de Nada (Devonian) | Ector | 1 | 68.1K | 276K | Jan 1993 – Apr 2026 |
| Foster H. S. "E" O-10-22238 | Par Development only | Cowden, South (Canyon 8900) | Ector | 2 | 67.7K | 69.7K | Jan 1993 – Apr 2026 |
| Cowden "14" O-10-33482 | Aghorn Operating, Inc. only | Harper, W. (Pennsylvanian) | Ector | 1 | 67K | 16K | Jan 1993 – Feb 2026 |
| RJ 5 O-10-36323 | OXY USA WTP LP only | Cowden, North (Canyon) | Ector | 2 | 66.8K | 35.7K | Apr 2000 – Apr 2026 |
| Parker Minerals 18C O-10-39845 | Acoma Operating, LLC only | Goldsmith (Clear Fork) | Ector | 4 | 66.8K | 160K | Nov 2009 – Apr 2026 |
| Blakeney, B. H. -M1A- O-10-32667 | Scout Energy Management LLC only | Goldsmith, East (Glorieta) | Ector | 2 | 65.7K | 83.5K | Jan 1993 – Apr 2007 |
| Blakeney, B.H. -A- O-10-25062 | Occidental Permian Ltd. only | Cowden, North | Ector | 1 | 65.6K | 160K | Jan 1993 – Dec 2024 |
| Moss, Paul, Etal -B- Tract 1 O-10-17852 | OXY USA WTP LP only | Harper (Ellenburger) | Ector | 1 | 65.6K | 110K | Jan 1993 – May 2018 |
| Frank "B" O-10-19525 | Maverick Permian LLC only | Goldsmith, N. (San Andres, Con.) | Ector | 5 | 65K | 1.02M | Jan 1993 – Aug 2016 |
| Ector 'BF' Fee O-10-34397 | Diamond S Energy Company only | York (Grayburg) | Ector | 4 | 65K | 326K | Jan 1995 – Apr 2026 |
| Connell, W. E. -C- O-10-4861 | Citation Oil & Gas Corp. only | Penwell (Clear Fork) | Ector | 1 | 65K | 48.5K | Jan 1993 – Apr 2026 |
| North Lawson Unit O-10-26286 | Endeavor Energy Resources L.P. only | Lawson (San Andres) | Ector | 66 | 64.9K | 54.2K | Jan 1993 – Feb 2019 |
| Flag Ranch E O-10-48698 | Raptor Resources, Inc. only | Goldsmith (Clear Fork) | Ector | 2 | 64.9K | 119K | May 2017 – Apr 2026 |
| Colonel Potter B O-10-36937 | Hilcorp Energy Company only | Mash (Devonian) | Ector | 1 | 64.8K | 214K | Jun 2002 – Apr 2026 |
| Williamson, J. M. O-10-18605 | Saga Petroleum LLC of Colorado only | Goldsmith, N. (San Andres, Con.) | Ector | 9 | 64.7K | 164K | Jan 1993 – May 2013 |
| TXL -P- O-10-15854 | Baker Operating, Inc. only | Goldsmith, W. (San Andres) | Ector | 4 | 64.6K | 225K | Jan 1993 – Apr 2026 |
| TXL -B- O-10-2473 | Walsh & Watts, Inc. only | Harper | Ector | 5 | 64.4K | 1.73K | Jan 1993 – Apr 2026 |
| Shoe Bar Ranch C O-10-41601 | Extex Operating Company only | King Lake ( Waddell) | Ector | 1 | 64.4K | 28.6K | Aug 2011 – Apr 2026 |
| 7814 JV-P Hence O-10-25341 | BTA Oil Producers, LLC only | Cowden, North | Ector | 6 | 64.3K | 20.1K | Jan 1993 – Feb 2016 |
| T X L -O- O-10-20046 | Cambrian Management, Ltd. only | TXL (San Andres) | Ector | 4 | 64.3K | 158K | Jan 1993 – Mar 2018 |
| Kayser, Eva B. O-10-22422 | Aghorn Operating, Inc. only | Cowden, South (Canyon 8790) | Ector | 3 | 64.2K | 120K | Jan 1993 – Feb 2026 |
| Texaco Fee "A" O-10-33787 | Maralo, Inc. only | W. T. Ford (Ellenburger) | Ector | 2 | 63.9K | 49.2K | Apr 1993 – Oct 1993 |
| Slator -C- O-10-35827 | Formentera Operations LLC only | TXL (Silurian) | Ector | 1 | 63.7K | 725K | Sep 1997 – Apr 2026 |
| Averitt "F" No. 1 O-10-35669 | Diamondback E&P LLC only | Moose (Wolfcamp) | Ector | 2 | 63.7K | 262K | Jan 1998 – Apr 2026 |
| Ector -a- Fee O-10-8643 | Helms Oil & Gas, LLC only | Double -H- (Grayburg) | Ector | 7 | 63.4K | 18.9K | Jan 1993 – Aug 2021 |
| Palmer, R. G. O-10-33652 | Bustamante Oil Company only | Foster | Ector | 1 | 63.3K | 16K | Jan 1993 – Dec 2023 |
| Maurice B O-10-31828 | Rein Pusher Operating LLC only | Cowden, South | Ector | 1 | 63.2K | 940 | Jan 1993 – Apr 2026 |
| Tyler O-10-41107 | Linn Operating, Inc. only | Sallie Ann (Spraberry-Wolfcamp) | Ector | 3 | 63.2K | 47K | Feb 2011 – Jul 2012 |
| Moss E O-10-36119 | Hilcorp Energy Company only | Harper (Strawn) | Ector | 3 | 62.9K | 136K | Aug 1999 – Jan 2014 |
| Vee Bar 14 O-10-40150 | Crescent Energy Operating, LLC only | Goldsmith (Clear Fork) | Ector | 1 | 62.6K | 32.5K | Jun 2010 – Apr 2026 |
| Reading-Moss O-10-20113 | Laguna Petroleum Corporation only | Cowden, South (Canyon 8790) | Ector | 3 | 62.6K | 92.3K | Jan 1993 – Oct 2011 |
| Fasken, David -AV- O-10-29403 | Apache Corporation only | Circle Bar (Devonian) | Ector | 1 | 62.6K | 834K | Jan 1993 – Oct 2009 |
| Fraser, G. C. E NCT-1 O-10-8734 | Aghorn Operating, Inc. only | TXL (Devonian) | Ector | 4 | 62.6K | 721K | Jan 1993 – Feb 2026 |
| Parker Minerals 12A O-10-39326 | Acoma Operating, LLC only | Goldsmith (Clear Fork) | Ector | 2 | 62.6K | 123K | Jan 2009 – Apr 2026 |