| Shafter Lake Clearfork Unit O-10-34411 | Highmark Energy Operating, LLC | Shafter Lake (Clear Fork) | Andrews | 79 | 5.61M | 1.5M | Feb 1995 – Apr 2026 |
| Bitler-Lowe Clearfork Unit O-10-29029 | Highmark Energy Operating, LLC | Fullerton | Andrews | 50 | 2.57M | 1.15M | by Jan 1993 – Apr 2026 |
| Deep Rock Etal -A- O-10-1033 | Highmark Energy Operating, LLC | Deep Rock (Glorieta 5950) | Andrews | 9 | 1.65M | 161K | by Jan 1993 – Apr 2026 |
| University San Andres Unit O-10-36661 | Highmark Energy Operating, LLC | Shafter Lake (San Andres) | Andrews | 44 | 743K | 422K | Aug 2001 – Apr 2026 |
| University -154- O-10-5506 | Highmark Energy Operating, LLC | Shafter Lake (Devonian) | Andrews | 6 | 634K | 602K | by Jan 1993 – May 2021 |
| University 155 O-10-33626 | Highmark Energy Operating, LLC | Shafter Lake (Devonian) | Andrews | 8 | 619K | 487K | by Jan 1993 – Apr 2026 |
| University 141A ,173 O-10-5504 | Highmark Energy Operating, LLC | Shafter Lake (Devonian) | Andrews | 15 | 541K | 315K | by Jan 1993 – Apr 2026 |
| Ogden -A- O-10-1034 | Highmark Energy Operating, LLC | Deep Rock (Glorieta 5950) | Andrews | 3 | 492K | 12.9K | by Jan 1993 – Apr 2026 |
| Graham-University O-10-27850 | Highmark Energy Operating, LLC | Deep Rock (Glorieta 5950) | Andrews | 3 | 435K | 6.07K | by Jan 1993 – Apr 2026 |
| Bitler-Lowe -B- O-10-13485 | Highmark Energy Operating, LLC | Fullerton | Andrews | 11 | 425K | 269K | by Jan 1993 – Apr 2026 |
| Miles, Hayden A O-10-37793 | Highmark Energy Operating, LLC | Deep Rock (Glorieta 5950) | Andrews | 3 | 413K | 46.1K | May 2006 – Apr 2026 |
| University 153 O-10-5505 | Highmark Energy Operating, LLC | Shafter Lake (Devonian) | Andrews | 6 | 400K | 185K | by Jan 1993 – Apr 2026 |
| University -C- O-10-5498 | Highmark Energy Operating, LLC | Shafter Lake (Devonian) | Andrews | 4 | 385K | 238K | Feb 1993 – Oct 2020 |
| University -154- O-10-10925 | Highmark Energy Operating, LLC | Shafter Lake (Clear Fork) | Andrews | 5 | 350K | 193K | by Jan 1993 – Apr 2026 |
| Humble-King O-10-1024 | Highmark Energy Operating, LLC | Deep Rock (Ellenburger) | Andrews | 1 | 330K | 275K | by Jan 1993 – Apr 2026 |
| University -F- O-10-19655 | Highmark Energy Operating, LLC | Shafter Lake (Clear Fork) | Andrews | 3 | 317K | 125K | by Jan 1993 – Apr 2026 |
| University 173 O-10-19459 | Highmark Energy Operating, LLC | Shafter Lake (Clear Fork) | Andrews | 3 | 299K | 152K | by Jan 1993 – Apr 2026 |
| Deep Rock et al -A- O-10-21679 | Highmark Energy Operating, LLC | Shafter Lake (San Andres) | Andrews | 4 | 236K | 50.6K | by Jan 1993 – Jan 2023 |
| Lowe, M. R. 15 O-10-37827 | Highmark Energy Operating, LLC | Fullerton | Andrews | 6 | 216K | 143K | Jul 2006 – Apr 2026 |
| Shell-Perkins O-10-28453 | Highmark Energy Operating, LLC | Deep Rock (Penn.) | Andrews | 10 | 204K | 385K | by Jan 1993 – Apr 2026 |
| E. F. King O-10-42650 | Highmark Energy Operating, LLC | Fuhrman (Glorieta) | Andrews | 2 | 152K | 1.78K | Apr 2012 – Apr 2026 |
| Miles, Hayden -A- O-10-8249 | Highmark Energy Operating, LLC | Deep Rock (Ellenburger) | Andrews | 1 | 140K | 70.4K | by Jan 1993 – Feb 2020 |
| Davis, L. T. O-10-11206 | Highmark Energy Operating, LLC | Fuhrman-Mascho (Devonian) | Andrews | 2 | 139K | 510K | by Jan 1993 – Apr 2026 |
| Davis, L. T. O-10-1720 | Highmark Energy Operating, LLC | Fuhrman-Mascho | Andrews | 12 | 129K | 201K | by Jan 1993 – Feb 2023 |
| University -F- O-10-5508 | Highmark Energy Operating, LLC | Shafter Lake (Devonian) | Andrews | 2 | 125K | 46.8K | by Jan 1993 – Apr 2026 |
| University 173 O-10-28762 | Highmark Energy Operating, LLC | Shafter Lake (Ellenburger) | Andrews | 2 | 119K | 14.7K | by Jan 1993 – May 2016 |
| Miles "B" O-10-25115 | Highmark Energy Operating, LLC | Deep Rock (Devonian) | Andrews | 3 | 105K | 142K | by Jan 1993 – Jun 2017 |
| Cities University O-10-27475 | Highmark Energy Operating, LLC | Deep Rock (Glorieta 5950) | Andrews | 3 | 96.9K | 1.67K | by Jan 1993 – Apr 2026 |
| Ogden -B- O-10-10767 | Highmark Energy Operating, LLC | Deep Rock (Glorieta 5950) | Andrews | 1 | 91.8K | 17.8K | by Jan 1993 – Jul 2025 |
| University -141- O-10-17918 | Highmark Energy Operating, LLC | Shafter Lake (Clear Fork) | Andrews | 2 | 87.4K | 27.2K | by Jan 1993 – May 2021 |
| University 154 O-10-5512 | Highmark Energy Operating, LLC | Shafter Lake (Ellenburger) | Andrews | 6 | 86.4K | 11.2K | by Jan 1993 – Nov 2013 |
| Humble King O-10-26907 | Highmark Energy Operating, LLC | Deep Rock (Devonian) | Andrews | 1 | 82.5K | 117K | by Jan 1993 – Apr 2026 |
| Southland Royalty -C- O-10-16023 | Highmark Energy Operating, LLC | Deep Rock, South (Wolfcamp) | Andrews | 1 | 72.5K | 7.83K | by Jan 1993 – Feb 2026 |
| Miles, Hayden -A- O-10-31681 | Highmark Energy Operating, LLC | Deep Rock (Devonian) | Andrews | 1 | 63.8K | 36.3K | by Jan 1993 – Feb 2020 |
| University "C" O-10-33935 | Highmark Energy Operating, LLC | Shafter Lake (San Andres) | Andrews | 2 | 56.8K | 27.6K | Sep 1993 – Mar 2020 |
| Miles, Hayden B O-10-37980 | Highmark Energy Operating, LLC | Deep Rock (Glorieta 5950) | Andrews | 1 | 52K | 15K | Jul 2006 – Dec 2023 |
| King, E. F. O-10-1722 | Highmark Energy Operating, LLC | Fuhrman-Mascho | Andrews | 7 | 49.9K | 79.7K | by Jan 1993 – Aug 2014 |
| University 155 O-10-33625 | Highmark Energy Operating, LLC | Shafter Lake (Ellenburger) | Andrews | 2 | 46.2K | 20K | by Jan 1993 – May 2024 |
| University -153- O-10-20848 | Highmark Energy Operating, LLC | Shafter Lake (San Andres) | Andrews | 3 | 43.5K | 19.1K | by Jan 1993 – Sep 2024 |
| Southland Royalty -C- O-10-32033 | Highmark Energy Operating, LLC | Wallen (San Andres) | Andrews | 1 | 40.1K | 8.85K | by Jan 1993 – Apr 2026 |
| University "143" O-10-24645 | Highmark Energy Operating, LLC | Shafter Lake (San Andres) | Andrews | 1 | 33K | 13.6K | by Jan 1993 – Feb 2023 |
| Davis, L. T. O-10-43709 | Highmark Energy Operating, LLC | Fuhrman (Glorieta) | Andrews | 1 | 32.1K | 29.5K | Feb 2012 – Feb 2023 |
| Southland Royalty "D" O-10-34938 | Highmark Energy Operating, LLC | Wallen (San Andres) | Andrews | 1 | 30.6K | 2.82K | Apr 1996 – Apr 2026 |
| Cabot University Lands O-10-29790 | Highmark Energy Operating, LLC | Shafter Lake (San Andres) | Andrews | 1 | 23.4K | 9.32K | by Jan 1993 – Apr 2014 |
| University -II- O-10-11041 | Highmark Energy Operating, LLC | Shafter Lake (San Andres) | Andrews | 1 | 23.2K | 11.8K | by Jan 1993 – Jan 2022 |
| University 174 O-10-22342 | Highmark Energy Operating, LLC | Shafter Lake (Clear Fork) | Andrews | 2 | 22.2K | 6.73K | by Jan 1993 – Jan 2002 |
| Lowe, M. R. 6 O-10-39446 | Highmark Energy Operating, LLC | Fullerton | Andrews | 2 | 19.6K | 23.8K | Feb 2009 – Jul 2021 |
| University "C" O-10-37431 | Highmark Energy Operating, LLC | Shafter Lake (Yates) | Andrews | 2 | 16.6K | 14.3K | Nov 2004 – Mar 2026 |
| University -C- O-10-31397 | Highmark Energy Operating, LLC | Shafter Lake (Ellenburger) | Andrews | 3 | 15.7K | 6.28K | by Jan 1993 – Aug 1995 |
| University Isabell O-10-11987 | Highmark Energy Operating, LLC | Shafter Lake (San Andres) | Andrews | 1 | 13.1K | 5.61K | by Jan 1993 – Apr 2018 |