| West Ranch G-10-245326 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 42 | 1.05M | Sep 2008 – Jan 2026 |
| West Ranch G-10-227085 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 42 | 2.11M | Feb 2007 – Nov 2023 |
| North Pinon G-10-223787 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 42 | 54.8K | Jun 2006 – Feb 2025 |
| Longfellow G-10-239340 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 42 | 2.14M | Feb 2008 – Mar 2024 |
| West Ranch G-10-259524 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 42 | 1.69M | May 2010 – Mar 2024 |
| West Ranch G-10-244939 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 42 | 383K | Feb 2008 – Feb 2025 |
| Benavides Trust G-4-202323 | Merit Energy Company only | Hundido (Lobo) | Zapata | 1 | 41 | 486K | May 2004 – Feb 2016 |
| Frost National Bank Trustee G-1-133822 | San Antonio Gas & Oil, Inc. only | Dent Ingram (Olmos 1) | Dimmit | 1 | 41 | 14.3K | by Jan 1993 – Aug 1995 |
| West Ranch G-10-259464 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 41 | 1.21M | Aug 2010 – Mar 2024 |
| Wood Trust G-6-244852 | WTR Operating LLC only | Carthage (Haynesville Shale) | Rusk | 1 | 41 | 690K | Feb 2009 – Jul 2026 |
| West Ranch G-10-244833 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 41 | 147K | Apr 2008 – Feb 2025 |
| West Ranch G-10-246702 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 41 | 238K | Oct 2008 – Aug 2026 |
| West Ranch G-10-260113 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 41 | 472K | Sep 2010 – Sep 2025 |
| Cole Trusts 576 "A" G-13-224567 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Denton | 1 | 40 | 254K | Aug 2006 – Apr 2026 |
| Allison G-10-160413 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 40 | 1.91M | Aug 1996 – Apr 2024 |
| Lopez Mineral Trust G-4-251311 | Paleo Oil Company LLC only | Dinn Intermediate (Hinnant) | Duval | 1 | 40 | 4.21M | Mar 2009 – Oct 2019 |
| GF Buzzard et al Trustee A G-14-201099 | Latigo Petroleum, LLC only | Hansford (Morrow, Lower) | Hansford | 1 | 40 | 804K | Jun 2004 – Aug 2026 |
| West Ranch G-10-249055 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 40 | 492K | Jan 2009 – Jul 2026 |
| Allison G-10-237982 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 40 | 260K | Jan 2008 – Jan 2026 |
| Aldwell, Winnie R. Trust "I" G-9-64149 | Upp Operating, LLC only | Sawyer (Canyon) | Sutton | 1 | 40 | 1.98M | by Jan 1993 – Jul 2026 |
| Longfellow G-10-176621 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 39 | 175K | Feb 2000 – Nov 2006 |
| Price Trust 76 Lip G-14-263837 | Chesapeake Operating, Inc. only | Feldman (Tonkawa) | Lipscomb | 1 | 39 | 43 | Jan 2012 – Jan 2012 |
| Henderson Trust "00" G-9-153186 | Red Stag Operating, LLC only | Ozona (Canyon Sand) | Crockett | 1 | 39 | 583K | Jan 1995 – Aug 2026 |
| Anderson Trust "A" G-5-190538 | Diversified Production LLC only | Nan-SU-Gail (CV Consolidated) | Freestone | 1 | 39 | 335K | Aug 2002 – Aug 2026 |
| West Ranch G-10-261854 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 38 | 1.47M | Jul 2010 – Apr 2024 |
| Allison 4 G-10-248890 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 38 | 4.62M | Dec 2008 – Apr 2024 |
| Haynes Mineral Trust G-4-121402 | Hilcorp Energy Company only | Haynes (Middle Wilcox Cons.) | Zapata | 1 | 37 | 733K | by Jan 1993 – Oct 2023 |
| Longfellow G-10-259468 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 37 | 693K | Jul 2010 – Mar 2024 |
| Rowan Estate Trust G-13-145864 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Wise | 1 | 37 | 3.19M | Jun 1993 – Aug 2026 |
| Longfellow G-10-260450 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 37 | 129K | Jul 2010 – Jan 2026 |
| Buschman Family Trust G-14-217054 | High River Res Operating, LLC only | Smith Perryton (Morrow-Miss.) | Ochiltree | 1 | 37 | 224K | Dec 2005 – Aug 2026 |
| Wolz, Emmitt P. Trustee O-3-12097 | Cirrus Production Company only | Giddings (Austin Chalk-3) | Lee | 2 | 36 | 105 | by Jan 1993 – Jul 1993 |
| Marrs McLean Trust -C- G-4-210492 | BP America Production Company only | Thompsonville, NE. (10640) | Jim Hogg | 1 | 36 | 14.2K | May 2005 – Apr 2006 |
| Benavides Mineral Trust G-4-158709 | EOG Resources, Inc. only | Lopeno, NE. (Wilcox 8400) | Zapata | 1 | 36 | 303K | Mar 1996 – Jan 1999 |
| Fawcett, Randee Trust "C" G-9-204869 | Upp Operating, LLC only | Sawyer (Canyon) | Sutton | 1 | 36 | 305K | Dec 2002 – Jul 2026 |
| Linder Trust G-2-176768 | Crimson Exploration Oper., Inc. only | Brushy Creek, S. (Wilcox 13900) | De Witt | 1 | 35 | 76.2K | Feb 2000 – Apr 2009 |
| West Ranch G-10-248336 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 35 | 933K | Feb 2009 – Apr 2024 |
| Jones Trust -26- G-14-191276 | Chesapeake Operating, Inc. only | Canadian, SE (Douglas) | Hemphill | 1 | 35 | 16.9K | Sep 2002 – Apr 2008 |
| Iowa Realty Trust G-10-20581 | Grace Petroleum Operating, LLC only | Pecos Valley (McKee) | Pecos | 1 | 35 | 811K | by Jan 1993 – Aug 2022 |
| Longfellow G-10-237764 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 35 | 467K | Aug 2007 – Aug 2026 |
| West Ranch South G-10-259435 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 35 | 368K | Mar 2010 – Mar 2022 |
| Longfellow G-10-243241 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 35 | 784K | Sep 2008 – Feb 2024 |
| Longfellow G-10-249755 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 35 | 362K | Feb 2008 – Dec 2022 |
| Hill-Fawcett, Randee Trust "E" G-9-210830 | Upp Operating, LLC only | Sawyer (Strawn, North) | Sutton | 1 | 34 | 346K | Dec 2004 – Jul 2026 |
| Davis, M.M. O-1-5337 | Bledsoe, R.K. Trust Oil Operator only | Charlotte (Navarro) | Atascosa | 4 | 34 | 2 | May 1994 – Mar 1999 |
| Allison G-10-275050 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 34 | 1.07M | Jun 2010 – Mar 2024 |
| Allison G-10-187586 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 34 | 1.16M | Feb 2002 – Jan 2026 |
| Wimberly Family Trust G-13-294582 | Oakridge Oil and Gas, LP only | Jack County Regular | Jack | 1 | 34 | 40.3K | Mar 2023 – Aug 2026 |
| West Ranch G-10-251498 | Occidental W TX Overthrust, Inc. only | Allison Ranch (Wolfcamp) | Pecos | 1 | 34 | 37 | Oct 2012 – Oct 2012 |
| West Ranch G-10-273785 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 34 | 232K | Sep 2010 – Aug 2026 |