| West Ranch G-10-251514 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 12 | 769K | May 2009 – Apr 2024 |
| Haynes Mineral Trust G-4-217123 | Hilcorp Energy Company only | Haynes (Middle Wilcox Cons.) | Zapata | 1 | 12 | 397K | Feb 2006 – Jul 2026 |
| Randee Fawcett Trust G-9-213982 | Upp Operating, LLC only | Sawyer (Canyon) | Sutton | 1 | 12 | 153K | Jul 2005 – Jul 2026 |
| West Ranch G-10-257745 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 12 | 1.41M | Nov 2009 – May 2023 |
| Kincaid, A. R. Trust 'D' G-9-282827 | Scout Energy Management LLC only | Lin (Wolfcamp) | Crockett | 1 | 11 | 1.84K | May 2017 – Aug 2026 |
| Allison G-10-261642 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 11 | 260K | Aug 2010 – Apr 2024 |
| Longfellow G-10-256466 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 11 | 201K | Nov 2008 – Aug 2026 |
| West Ranch G-10-259370 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 11 | 767K | Aug 2010 – Feb 2024 |
| Rundall Trust Unit G-3-215088 | Cobra Oil & Gas Corporation only | Maple Branch (Yegua) | Walker | 1 | 10 | 267K | Nov 2005 – Jul 2008 |
| Le Tulle Est. "B" G-3-165301 | Prime Operating Company only | Rusty (2700) | Matagorda | 1 | 10 | 37.2K | Sep 1997 – Aug 1998 |
| Hill-Fawcett, Randee Trust "E" G-9-106143 | Upp Operating, LLC only | Sawyer (Canyon) | Sutton | 1 | 10 | 470K | by Jan 1993 – Jul 2026 |
| Turner Trust Unit G-13-222908 | XTO Energy Inc. only | Newark, East (Barnett Shale) | Tarrant | 1 | 10 | 280K | May 2006 – Sep 2009 |
| El Peyote Mineral Trust G-4-166416 | TD Natural Resources LLC only | Loma Vieja (Wilcox) | Zapata | 1 | 10 | 3.09M | Dec 1997 – Jun 2004 |
| West Ranch South 4 G-10-242197 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 10 | 842K | Aug 2008 – Apr 2024 |
| Deaton Trust G-13-109616 | LKM Oil and Gas LLC only | Kinder, North (Atoka Congl.) | Jack | 1 | 10 | 12.8K | by Jan 1993 – Jul 2026 |
| West Ranch G-10-237959 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 10 | 132K | Feb 2008 – Aug 2026 |
| West Ranch G-10-229638 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 10 | 36.2K | Jul 2007 – May 2026 |
| West Ranch G-10-261458 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 10 | 85.2K | Oct 2009 – Sep 2025 |
| Mitchell Trust GU G-6-245169 | Craton Operating LLC only | Carthage (Haynesville Shale) | Shelby | 1 | 10 | 187K | Dec 2008 – Apr 2010 |
| Rowan Estate Trust G-13-183549 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Wise | 1 | 10 | 2.97M | Jun 2001 – Aug 2026 |
| Allison 4 G-10-248908 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 10 | 1.59M | Nov 2008 – Apr 2024 |
| West Ranch G-10-239314 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 10 | 546K | Nov 2007 – Apr 2024 |
| Bruni Mineral Trust "A" G-4-84519 | Hilcorp Energy Company only | Juanita (Lobo) | Webb | 1 | 10 | 15.3K | Apr 1993 – Oct 2001 |
| Fawcett, Randee Trust -C- G-9-58198 | Upp Operating, LLC only | Sawyer (Canyon) | Sutton | 1 | 9 | 97.9K | by Jan 1993 – Jul 2026 |
| Cole, M. T. Trust G-13-63276 | Tejas Western Corp. only | Gas Finders (Congl.) | Denton | 1 | 9 | 266K | by Jan 1993 – Sep 2010 |
| West Ranch G-10-248621 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 9 | 761K | Jan 2009 – Apr 2024 |
| West Ranch G-10-189601 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 9 | 2.73M | May 2002 – Aug 2026 |
| Hein Trust G-4-177444 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Webb | 1 | 9 | 3.36M | May 2000 – Aug 2026 |
| West Ranch G-10-260175 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 9 | 1.43M | Aug 2010 – Mar 2024 |
| Fossil Wildman Trust G-5-222705 | Contrast Energy, LLC only | Hilltop Resort (Bossier) | Leon | 1 | 9 | 837K | Oct 2006 – Jun 2025 |
| West Ranch G-10-240633 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 9 | 443K | Aug 2008 – Apr 2024 |
| Longfellow G-10-241696 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 9 | 156K | Jul 2008 – Mar 2026 |
| Hill-Fawcett, Randee Trust "D" G-9-106539 | Upp Operating, LLC only | Sawyer (Canyon) | Sutton | 1 | 9 | 136K | by Jan 1993 – Jul 2026 |
| Longfellow State 18 G-10-247961 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 8 | 103K | Oct 2008 – Jan 2026 |
| Allison G-10-258536 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 8 | 554K | Jul 2010 – Oct 2022 |
| West Ranch South G-10-219195 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 8 | 857K | Jun 2006 – Apr 2024 |
| Merner Trust G-2-170233 | Westport Oil and Gas Company, LP only | Fannin, North (3750) | Goliad | 1 | 8 | 472K | Jul 1998 – May 2001 |
| Haynes Mineral Trust G-4-166168 | Hilcorp Energy Company only | Haynes (Middle Wilcox Cons.) | Zapata | 1 | 8 | 638K | Sep 1997 – Aug 2026 |
| West Ranch G-10-240934 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 8 | 884K | Dec 2007 – Apr 2024 |
| West Ranch G-10-252995 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 8 | 704K | Jun 2009 – Apr 2024 |
| Haynes Mineral Trust G-4-135442 | Hilcorp Energy Company only | Haynes (Middle Wilcox Cons.) | Zapata | 1 | 8 | 7 | Sep 1993 – Feb 2008 |
| Stormont G-2-147657 | Hunt, Wm. Herbert, Trust Est. only | Long Branch (Catahoula) | Jackson | 1 | 8 | 185K | Sep 1993 – Dec 1996 |
| Cole Trust G-13-181740 | Best Petroleum Explorations,inc. only | Newark, East (Barnett Shale) | Denton | 1 | 8 | 960K | Mar 2001 – Sep 2020 |
| Longfellow 600 G-10-248071 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 8 | 146K | Sep 2008 – Aug 2026 |
| West Ranch G-10-258183 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 8 | 376K | Jun 2010 – Apr 2024 |
| Benavides Trust G-4-165751 | Sanchez Oil & Gas Corporation only | Roleta (Wilcox Consolidated) | Zapata | 1 | 8 | 90.9K | Nov 1997 – Sep 1998 |
| Allison G-10-259467 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 8 | 897K | Sep 2010 – Apr 2024 |
| Brust Unit G-3-155760 | Ogden Resources Corporation only | Giddings (Austin Chalk, Gas) | Washington | 1 | 8 | 1.25M | Jun 1995 – Aug 2017 |
| Fawcett, Randee Trust "D" G-9-68247 | Upp Operating, LLC only | Sawyer (Canyon) | Sutton | 1 | 8 | 131K | by Jan 1993 – Jul 2026 |
| Abraham, James Trust G-14-175896 | Mewbourne Oil Company only | Canadian, West (Morrow Lower) | Hemphill | 1 | 7 | 160K | Jan 2000 – Nov 2000 |