| Weidner 798 O-14-9140 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 2 | 67.9K | 815K | May 2011 – Aug 2026 |
| `earl Wheat 765 O-14-7677 | Highmark Energy Operating, LLC | Peery (Cleveland) | Lipscomb | 1 | 66.8K | 275K | Aug 2006 – Nov 2017 |
| Malinda 745 O-14-9700 | Highmark Energy Operating, LLC | Allen-Parker (Marmaton) | Ochiltree | 1 | 65.3K | 397K | Jul 2018 – Aug 2026 |
| Glass 112 O-14-8147 | Highmark Energy Operating, LLC | Pan Petro (Cleveland) | Ochiltree | 1 | 64.1K | 451K | May 2010 – Aug 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 |
| Doyle, Robert B. G-14-266559 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 59.8K | 644K | Sep 2010 – Apr 2023 |
| Slavin 110 O-14-8432 | Highmark Energy Operating, LLC | Pan Petro (Cleveland) | Ochiltree | 1 | 59.6K | 317K | Mar 2011 – Aug 2026 |
| Reba N Miller G-14-282340 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 59.5K | 875K | Mar 2017 – Aug 2026 |
| Doyle, Robert B G-14-278802 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 59K | 600K | Feb 2015 – Aug 2026 |
| Trosper, Corwin 431 O-14-7609 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 2 | 58.4K | 655K | Aug 2005 – Aug 2026 |
| University "C" O-10-33935 | Highmark Energy Operating, LLC | Shafter Lake (San Andres) | Andrews | 2 | 56.8K | 27.6K | Sep 1993 – Mar 2020 |
| Doyle, Robert B G-14-266469 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 55.4K | 358K | Sep 2011 – Jul 2026 |
| Price, Willis D. G-14-265459 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 54.8K | 646K | Jan 2011 – Nov 2017 |
| Doyle, Robert 'B' G-14-279623 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 52.8K | 788K | Feb 2015 – Aug 2026 |
| Alma O-10-7001 | Highmark Energy Operating, LLC | TXL (Silurian) | Ector | 5 | 52.1K | 132K | by Jan 1993 – Oct 2017 |
| Miles, Hayden B O-10-37980 | Highmark Energy Operating, LLC | Deep Rock (Glorieta 5950) | Andrews | 1 | 52K | 15K | Jul 2006 – Dec 2023 |
| Peyton 111 O-14-8400 | Highmark Energy Operating, LLC | Pan Petro (Cleveland) | Ochiltree | 1 | 50.9K | 210K | Mar 2011 – Aug 2026 |
| Tregellas 675 O-14-8341 | Highmark Energy Operating, LLC | Pan Petro (Cleveland) | Lipscomb | 3 | 50.6K | 460K | May 2011 – Aug 2026 |
| King, E. F. O-10-1722 | Highmark Energy Operating, LLC | Fuhrman-Mascho | Andrews | 7 | 49.9K | 79.7K | by Jan 1993 – Aug 2014 |
| Moody, E. O-3-24294 | Highmark Energy Operating, LLC | Conroe (Cons. L) | Montgomery | 1 | 49.5K | 1.3M | Nov 2002 – Jul 2025 |
| Johnson -A- O-10-26596 | Highmark Energy Operating, LLC | Cowden, North (Canyon) | Ector | 2 | 49.3K | 3.72K | by Jan 1993 – Aug 2026 |
| Doyle, Robert B G-14-267105 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 49.1K | 118K | Apr 2011 – Sep 2019 |
| Cook 130 O-14-8716 | Highmark Energy Operating, LLC | Pan Petro (Cleveland) | Ochiltree | 1 | 49.1K | 315K | Jul 2012 – Aug 2026 |
| Burrus 187 O-14-8478 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 48.4K | 248K | Aug 2011 – Oct 2024 |
| Alma O-10-16751 | Highmark Energy Operating, LLC | TXL (Devonian) | Ector | 3 | 47K | 215K | by Jan 1993 – Dec 2023 |
| University 155 O-10-33625 | Highmark Energy Operating, LLC | Shafter Lake (Ellenburger) | Andrews | 2 | 46.2K | 20K | by Jan 1993 – May 2024 |
| Doyle, Robert B G-14-278576 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 45.8K | 497K | Feb 2015 – Aug 2026 |
| Fairway/James Lime/Unit G-6-208429 | Highmark Energy Operating, LLC | Fairway (James Lime) | Anderson | 1 | 45.1K | 2.49M | Feb 2005 – Apr 2025 |
| Swink 390 O-14-8419 | Highmark Energy Operating, LLC | Pan Petro (Cleveland) | Ochiltree | 1 | 44.7K | 364K | Apr 2011 – Jun 2024 |
| Wooten, H. O. O-11-65817 | Highmark Energy Operating, LLC | Wasson 72 | Yoakum | 1 | 44.4K | 40.7K | by Jan 1993 – Mar 2006 |
| Harry Parker 697 G-14-281852 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 43.6K | 598K | Nov 2016 – Aug 2026 |
| University -153- O-10-20848 | Highmark Energy Operating, LLC | Shafter Lake (San Andres) | Andrews | 3 | 43.5K | 19.1K | by Jan 1993 – Sep 2024 |
| Born 332 O-14-8462 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 42.2K | 1.09M | Oct 2011 – Aug 2026 |
| Keystone Mills Co. G-3-190753 | Highmark Energy Operating, LLC | Conroe (Middle Wilcox Cons.) | Montgomery | 1 | 41.9K | 5.49M | Jan 2002 – Sep 2007 |
| Moody, E. O-3-24369 | Highmark Energy Operating, LLC | Conroe (Cons. U) | Montgomery | 2 | 41.8K | 7.22K | Apr 2003 – May 2026 |
| Graham O-14-6757 | Highmark Energy Operating, LLC | Peery (Cleveland) | Ochiltree | 1 | 41.7K | 552K | by Jan 1993 – Aug 2026 |
| Southland Royalty -C- O-10-32033 | Highmark Energy Operating, LLC | Wallen (San Andres) | Andrews | 1 | 40.6K | 8.85K | by Jan 1993 – Aug 2026 |
| Reba N Miller G-14-282298 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 40.2K | 684K | Mar 2017 – Aug 2026 |
| Harry Parker 697 G-14-281831 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 38.6K | 1.33M | Nov 2016 – Aug 2026 |
| Tyson, D. R. G-14-247369 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 37.2K | 719K | Dec 2008 – Aug 2026 |
| Price, Willis D. G-14-266379 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 37K | 260K | Nov 2011 – Jul 2026 |
| Doyle, J.B. G-14-267714 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 36.9K | 910K | Sep 2012 – Aug 2026 |
| Burrus 186 O-14-8469 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 35.4K | 94.2K | Dec 2011 – Jun 2025 |
| Doyle, J.B. G-14-209619 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 34.5K | 843K | Jan 2005 – Aug 2026 |
| University "143" O-10-24645 | Highmark Energy Operating, LLC | Shafter Lake (San Andres) | Andrews | 1 | 33K | 13.6K | by Jan 1993 – Feb 2023 |
| Glass 16 O-10-37707 | Highmark Energy Operating, LLC | A & S (Miss.) | Mitchell | 1 | 33K | 22.3K | Feb 2006 – Dec 2020 |
| Reba N Miller G-14-266393 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 32.2K | 367K | Jun 2011 – Aug 2026 |
| Davis, L. T. O-10-43709 | Highmark Energy Operating, LLC | Fuhrman (Glorieta) | Andrews | 1 | 32.1K | 29.5K | Feb 2012 – Feb 2023 |
| Doyle, J.B. G-14-266374 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 31K | 282K | Jun 2011 – Aug 2015 |
| Alma O-10-16473 | Highmark Energy Operating, LLC | TXL (Wolfcamp, North) | Ector | 3 | 30.9K | 94.9K | by Jan 1993 – Aug 2026 |