| Ector -T- Fee O-10-11684 | Pen-Tex Production Co. Inc. | Harper | 10 | 57.1K | 38.3K | by Jan 1993 – Aug 2026 |
| Thomas, A.E. -B- O-10-32792 | Double Barrel Oil LLC | Wheeler (Silurian) | 1 | 57.1K | 447K | by Jan 1993 – Aug 2026 |
| Ratliff -K- O-10-13238 | PDC Energy | Headlee, N. (Devonian) | 1 | 56.9K | 330K | by Jan 1993 – May 2012 |
| Moss"f" O-10-23121 | OXY USA WTP LP | Cowden, South (Canyon 8790) | 3 | 56.9K | 255K | by Jan 1993 – Dec 2007 |
| Mobil-Eidson "26" O-10-29579 | Rust Oil Corp. | Mosswell (Strawn 8720) | 1 | 56.8K | 35.5K | by Jan 1993 – Aug 2005 |
| Witcher, J. E. -7- O-10-22736 | Occidental Permian Ltd. | Cowden, South (Canyon 8790) | 1 | 56.7K | 49.8K | Mar 1993 – Dec 2012 |
| Barrow, Augusta O-10-34199 | Slant Operating, LLC | Headlee (Bend) | 2 | 56.3K | 120K | May 1994 – Apr 2013 |
| Addis, Frank V. -C- O-10-859 | Occidental Permian Ltd. | Cowden, South | 2 | 56.3K | 25.5K | Aug 2000 – Aug 2026 |
| Parker Trust -19- O-10-28569 | Mayo, Eddie | Monahans Draw (Canyon 8388) | 2 | 56.2K | 109K | by Jan 1993 – Aug 2011 |
| Flag Ranch A O-10-45098 | Raptor Resources, Inc. | Goldsmith (Clear Fork) | 2 | 56.2K | 137K | Feb 2014 – Aug 2026 |
| Cowden, J. M. R/a -C- O-10-836 | Occidental Permian Ltd. | Cowden, North (Deep) | 1 | 56.1K | 2.61K | by Jan 1993 – May 2019 |
| Slat O-10-6962 | Aghorn Operating, Inc. | TXL (Ellenburger) | 2 | 56K | 72K | by Jan 1993 – Aug 2015 |
| Parker, J. E. O-10-6989 | OXY USA Inc. | TXL (Ellenburger) | 2 | 55.8K | 22.3K | by Jan 1993 – Aug 2011 |
| Holt, O. B., Tract 4 O-10-20907 | Texland Petroleum, L.P. | Triple-N (Penn., Upper) | 4 | 55.7K | 84.4K | by Jan 1993 – Aug 2026 |
| Pool O-10-25661 | Texon Oil Company, Inc. | Headlee, N. (Devonian) | 1 | 55.6K | 21 | by Jan 1993 – Aug 2016 |
| Tornado O-10-36528 | OXY USA WTP LP | Goldsmith (Devonian) | 1 | 55.3K | 91.4K | Dec 2000 – Aug 2026 |
| BR Odessa O-10-55254 | OXY USA Inc. | Cowden, North (Canyon) | 1 | 55.3K | 34.8K | Oct 2019 – Aug 2026 |
| Kloh "B-7" O-10-20260 | Aghorn Operating, Inc. | TXL (San Andres) | 2 | 55.2K | 121K | by Jan 1993 – Feb 2018 |
| Addis, Frank V. -B- O-10-21344 | Occidental Permian Ltd. | Cowden, South (Canyon 8790) | 1 | 55K | 30.6K | by Jan 1993 – Apr 2021 |
| Millard "D" O-10-37237 | Conocophillips Company | Penwell (Fusselman) | 1 | 54.8K | 60.7K | Jun 2003 – Sep 2012 |
| Peggy B O-10-44576 | Diamondback E&P LLC | Sallie Ann (Spraberry-Wolfcamp) | 2 | 54.8K | 119K | May 2013 – Aug 2026 |
| Millard -C- O-10-41798 | Ring Energy, Inc. | Penwell (Devonian) | 4 | 54.7K | 118K | Aug 2011 – Sep 2020 |
| Cowden -31- O-10-31215 | Bustamante Resources LLC | Cowden (Cisco) | 2 | 54.3K | 19 | by Jan 1993 – Aug 2026 |
| TXL -L- a/C III O-10-12455 | Formentera Operations LLC | TXL (Devonian) | 2 | 54.3K | 306K | by Jan 1993 – Aug 2026 |
| Douglass Parker O-10-47497 | Crescent Energy Operating, LLC | Goldsmith | 1 | 54.2K | 136K | Apr 2014 – Aug 2026 |
| Thomas -A- O-10-6924 | Formentera Operations LLC | TXL (Devonian) | 2 | 54K | 191K | by Jan 1993 – Jan 2020 |
| Moss Ranch "44" O-10-42652 | Aghorn Operating, Inc. | Sallie Ann (Spraberry-Wolfcamp) | 1 | 53.9K | 94.3K | Mar 2012 – Jun 2026 |
| Benjamin 'B' O-10-39079 | Diamondback E&P LLC | Sallie Ann (Spraberry-Wolfcamp) | 2 | 53.8K | 145K | Nov 2008 – Sep 2021 |
| TXL -P- O-10-19812 | Octane Energy Operating, LLC | Goldsmith, N. (San Andres, Con.) | 2 | 53.6K | 234K | by Jan 1993 – Aug 2026 |
| Moss, Paul O-10-22411 | R3 Operating Corporation | Cowden, South (Dev.) | 3 | 53.5K | 85.8K | by Jan 1993 – Nov 2018 |
| Cowden, W. E. O-10-29598 | Baker Operating, Inc. | Harper | 9 | 53.4K | 9.73K | by Jan 1993 – May 2026 |
| North Goldsmith Oil Unit #4 O-10-19727 | Baker Operating, Inc. | Goldsmith, N. (San Andres, Con.) | 4 | 53.3K | 207K | by Jan 1993 – Aug 2026 |
| Millie B (Alloc) O-10-45996 | Firebird Energy LLC | Sallie Ann (Spraberry-Wolfcamp) | 1 | 53.2K | 28.7K | Nov 2013 – Jun 2018 |
| Sabine O-10-14218 | Libertad Operating LLC | Cowden, North | 4 | 53.1K | 8.85K | by Jan 1993 – Aug 2026 |
| Averitt (AW) O-10-45430 | FDL Operating, LLC | Sallie Ann (Spraberry-Wolfcamp) | 1 | 53.1K | 105K | Aug 2013 – Aug 2017 |
| Sallie 13 O-10-59670 | Diamondback E&P LLC | Spraberry (Trend Area) | 2 | 53K | 210K | Jun 2022 – Aug 2026 |
| Holt, O. B. "A" O-10-22851 | Ernmar Investments, Inc. | Cowden, North | 2 | 53K | 12.6K | by Jan 1993 – Aug 2026 |
| Scharbauer -MO- /Upper/ O-10-18863 | Endeavor Energy Resources L.P. | Goldsmith | 6 | 52.9K | 29.9K | by Jan 1993 – Oct 2010 |
| Ector -H- Fee O-10-9761 | Formentera Operations LLC | Harper | 13 | 52.5K | 29.8K | by Jan 1993 – Aug 2026 |
| Parker Trust 20 O-10-39886 | Crescent Energy Operating, LLC | Goldsmith (Clear Fork) | 9 | 52.3K | 107K | Nov 2009 – Sep 2021 |
| Alma O-10-7001 | Highmark Energy Operating, LLC | TXL (Silurian) | 5 | 52.1K | 132K | by Jan 1993 – Oct 2017 |
| Foster E O-10-37190 | OXY USA Inc. | Cowden, South | 1 | 52.1K | 5.9K | Aug 2003 – Aug 2026 |
| Cummins -C- O-10-12767 | OXY USA WTP LP | Goldsmith (Fusselman) | 1 | 51.8K | 116K | by Jan 1993 – Feb 2024 |
| Cowden-1- O-10-31934 | Aghorn Operating, Inc. | Cowden (Cisco) | 1 | 51.7K | 18.6K | by Jan 1993 – Jun 2026 |
| Shoebar Ranch -B O-10-34185 | Phillips Petroleum Company | Ectorfisk (Fusselman) | 1 | 51.7K | 27K | May 1994 – Oct 1996 |
| TXL -N- O-10-22628 | Formentera Operations LLC | TXL (Silurian) | 2 | 51.6K | 247K | by Jan 1993 – Aug 2026 |
| Foster "F" O-10-22703 | Baker Operating, Inc. | Cowden, South (Canyon 8900) | 1 | 51.3K | 65K | by Jan 1993 – May 2016 |
| Fraser, G. C. O-10-38437 | Petex | Goldsmith (Clear Fork) | 3 | 51.3K | 32.7K | Nov 2006 – Aug 2026 |
| Haley O-10-41617 | Scout Energy Management LLC | Goldsmith (Clear Fork) | 3 | 51.1K | 291K | Sep 2011 – Jul 2026 |
| Smith, R. W. "G" O-10-22535 | Occidental Permian Ltd. | Cowden, North (Clear Fork) | 1 | 50.8K | 2.62K | by Jan 1993 – Aug 2026 |