| Cooper 357 O-14-7840 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 2 | 177K | 1.43M | Feb 2008 – Aug 2026 |
| Sanders 391 O-14-8582 | Highmark Energy Operating, LLC | Pan Petro (Cleveland) | Ochiltree | 1 | 170K | 675K | Apr 2011 – Aug 2026 |
| Hill 433 O-14-8146 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 4 | 169K | 1.66M | Apr 2010 – Aug 2026 |
| Brownlee 128 O-14-8629 | Highmark Energy Operating, LLC | Pan Petro (Cleveland) | Ochiltree | 2 | 158K | 588K | Jun 2012 – Aug 2026 |
| Wallville 321 O-14-8857 | Highmark Energy Operating, LLC | Pan Petro (Cleveland) | Ochiltree | 2 | 158K | 1.49M | Jan 2013 – Aug 2026 |
| E. F. King O-10-42650 | Highmark Energy Operating, LLC | Fuhrman (Glorieta) | Andrews | 2 | 155K | 1.78K | Apr 2012 – Aug 2026 |
| Braum 709 O-14-8510 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 2 | 155K | 2.17M | Feb 2012 – Aug 2026 |
| Waters Ranch 330 O-14-8459 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 2 | 152K | 1.79M | Sep 2011 – Aug 2026 |
| Alma O-10-18022 | Highmark Energy Operating, LLC | TXL (Tubb) | Ector | 6 | 151K | 303K | by Jan 1993 – Aug 2026 |
| CNB "G" 345 O-14-7678 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 3 | 144K | 939K | Jul 2006 – Aug 2026 |
| Cooper 348 O-14-7627 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 4 | 142K | 864K | Jan 2006 – Aug 2026 |
| J.H. Dickerson O-6-16012 | Highmark Energy Operating, LLC | Fairway (Rodessa) | Henderson | 2 | 141K | 214K | Jul 2023 – Aug 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 | 140K | 514K | by Jan 1993 – Aug 2026 |
| Doyle 708 O-14-8475 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 2 | 133K | 1.63M | Nov 2011 – Aug 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 | 126K | 46.9K | by Jan 1993 – Aug 2026 |
| Trosper 362 O-14-8508 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 2 | 126K | 1.49M | Apr 2012 – Aug 2026 |
| University 173 O-10-28762 | Highmark Energy Operating, LLC | Shafter Lake (Ellenburger) | Andrews | 2 | 119K | 14.7K | by Jan 1993 – May 2016 |
| Jones Trust 359 O-14-7842 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 3 | 114K | 901K | Feb 2008 – Feb 2020 |
| Rogers 320 O-14-8871 | Highmark Energy Operating, LLC | Pan Petro (Cleveland) | Ochiltree | 2 | 113K | 1.26M | Apr 2013 – Aug 2026 |
| Fairway/James Lime/Unit G-6-181540 | Highmark Energy Operating, LLC | Fairway (James Lime) | Anderson | 1 | 112K | 9.16M | Mar 2001 – Jun 2026 |
| Averitt O-10-35732 | Highmark Energy Operating, LLC | Cowden, South | Ector | 2 | 111K | 0 | May 1998 – Aug 2026 |
| Devin 187 O-14-8604 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 109K | 799K | Jan 2012 – Aug 2026 |
| Miles "B" O-10-25115 | Highmark Energy Operating, LLC | Deep Rock (Devonian) | Andrews | 3 | 105K | 142K | by Jan 1993 – Jun 2017 |
| TXL #2 O-10-25557 | Highmark Energy Operating, LLC | Cowden, North (Deep) | Ector | 2 | 103K | 65.3K | by Jan 1993 – Aug 2026 |
| Schumann 112 O-14-8177 | Highmark Energy Operating, LLC | Pan Petro (Cleveland) | Ochiltree | 1 | 99.1K | 873K | Jun 2010 – Aug 2026 |
| Cities University O-10-27475 | Highmark Energy Operating, LLC | Deep Rock (Glorieta 5950) | Andrews | 3 | 97.2K | 1.67K | by Jan 1993 – Aug 2026 |
| Wallville 384 O-14-8409 | Highmark Energy Operating, LLC | Pan Petro (Cleveland) | Ochiltree | 1 | 94.1K | 892K | Aug 2010 – Aug 2026 |
| Minium 734 O-14-7654 | Highmark Energy Operating, LLC | Peery (Cleveland) | Lipscomb | 2 | 94K | 661K | May 2006 – Aug 2026 |
| Stringfield, Tommye G-5-123556 | Highmark Energy Operating, LLC | Sand Trap (James Lime) | Henderson | 1 | 93.2K | 20.3M | by Jan 1993 – Aug 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 |
| Swink 391 O-14-8041 | Highmark Energy Operating, LLC | Pan Petro (Cleveland) | Ochiltree | 1 | 89.5K | 451K | Aug 2009 – Aug 2026 |
| Fairway/James Lime/Unit G-6-226134 | Highmark Energy Operating, LLC | Fairway (James Lime) | Anderson | 1 | 88.1K | 12.2M | Feb 2007 – Aug 2026 |
| University -141- O-10-17918 | Highmark Energy Operating, LLC | Shafter Lake (Clear Fork) | Andrews | 2 | 87.4K | 27.2K | by Jan 1993 – May 2021 |
| Roberts/Miller-Holloway G.U. G-5-124987 | Highmark Energy Operating, LLC | Sand Trap (James Lime) | Henderson | 1 | 87.3K | 25.3M | by Jan 1993 – Mar 2023 |
| University 154 O-10-5512 | Highmark Energy Operating, LLC | Shafter Lake (Ellenburger) | Andrews | 6 | 86.4K | 11.2K | by Jan 1993 – Nov 2013 |
| Doyle, J.B. G-14-266422 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 85.8K | 974K | Dec 2011 – Jul 2021 |
| Price, Willis D. G-14-267668 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 85K | 719K | Apr 2012 – Aug 2026 |
| Peery 733 O-14-7843 | Highmark Energy Operating, LLC | Peery (Cleveland) | Lipscomb | 2 | 84.8K | 492K | Dec 2007 – Apr 2025 |
| Humble King O-10-26907 | Highmark Energy Operating, LLC | Deep Rock (Devonian) | Andrews | 1 | 82.7K | 117K | by Jan 1993 – Aug 2026 |
| Tyson 447 O-14-8542 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 2 | 82.4K | 1.39M | May 2012 – Aug 2026 |
| Lockhart 1001 O-14-8927 | Highmark Energy Operating, LLC | Allen-Parker (Marmaton) | Ochiltree | 1 | 80.6K | 357K | Sep 2013 – Aug 2026 |
| Doyle, J.B. O-14-5816 | Highmark Energy Operating, LLC | Lipscomb, E. (Des Moines) | Lipscomb | 3 | 80.3K | 694K | by Jan 1993 – Jul 2020 |
| Hightower et al GU 1 G-5-111323 | Highmark Energy Operating, LLC | Moore Station (James Lime) | Henderson | 1 | 78.8K | 19.2M | by Jan 1993 – Sep 2024 |
| Pearl Wheat 'a' 765 O-14-7737 | Highmark Energy Operating, LLC | Peery (Cleveland) | Lipscomb | 2 | 78.6K | 448K | Jan 2007 – Aug 2026 |
| Blais 1001 O-14-8951 | Highmark Energy Operating, LLC | Allen-Parker (Marmaton) | Ochiltree | 1 | 77.8K | 368K | Sep 2013 – Aug 2026 |
| Doyle, J.B. G-14-266375 | Highmark Energy Operating, LLC | Lipscomb (Cleveland) | Lipscomb | 1 | 75.6K | 1.24M | Jun 2011 – Aug 2026 |
| Keystone Mills O-3-25398 | Highmark Energy Operating, LLC | Conroe (Middle Wilcox Cons.) | Montgomery | 1 | 74.2K | 163K | May 2009 – Jul 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 |