| Allison Ranch G-10-248893 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 14 | 2.7M | Mar 2009 – Apr 2024 |
| West Ranch G-10-239068 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 14 | 188K | Jan 2008 – Jul 2026 |
| Haynes Mineral Trust G-4-148682 | Hilcorp Energy Company only | Haynes (Middle Wilcox Cons.) | Zapata | 1 | 14 | 345K | Jan 1994 – Dec 2000 |
| Haynes Mineral Trust G-4-122921 | Hilcorp Energy Company only | Haynes (Middle Wilcox Cons.) | Zapata | 1 | 14 | 58.9K | by Jan 1993 – Mar 2008 |
| Woodward Trust #1 G-8-136242 | Palo Pinto Bond Company, LLC only | Middle Creek (Congl.) | Palo Pinto | 1 | 14 | 136K | by Jan 1993 – Jun 2015 |
| Iowa Realty Trust G-10-44766 | Olsen Energy Inc. only | Pecos Valley (Wolfcamp) | Pecos | 1 | 14 | 1.04M | by Jan 1993 – Aug 2026 |
| West Ranch G-10-274888 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 14 | 816K | Sep 2010 – Dec 2023 |
| Boston Texas Land Trust #5 G-4-155282 | Legacy Corporation, The only | Amore (Vicksburg 6100) | Hidalgo | 1 | 14 | 3.92K | Jul 1995 – Aug 1995 |
| Hill-Randee Fawcett Trust "C" G-9-105812 | Upp Operating, LLC only | Sawyer (Canyon) | Sutton | 1 | 14 | 164K | by Jan 1993 – Jul 2026 |
| Tuttle G-2-147934 | Hunt, Wm. Herbert, Trust Est. only | Davo (Frio 2970) | Lavaca | 1 | 13 | 218K | Jun 1994 – May 1997 |
| West State G-10-261468 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 13 | 1.22M | Sep 2009 – Apr 2024 |
| Bruni Mineral Trust 'B' G-4-289841 | Hilcorp Energy Company only | Laredo (5680) | Webb | 1 | 13 | 23 | May 2018 – Oct 2020 |
| Douglas Mineral Trust "A" O-13-21729 | Hood, Joe B. only | Wichita County Regular | Wichita | 2 | 13 | 6 | by Jan 1993 – Jun 1993 |
| West Ranch G-10-257998 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 13 | 690K | Mar 2010 – Apr 2024 |
| Allison G-10-230103 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 13 | 1.99M | Jul 2007 – Mar 2023 |
| Henderson Trust GG G-9-155440 | Red Stag Operating, LLC only | Ozona, SW. (Strawn) | Crockett | 1 | 13 | 125K | Jun 1995 – Aug 2026 |
| Creek Ranch 10 G-9-153835 | Conocophillips Company only | Pakenham (Thrusted) | Terrell | 1 | 13 | 1.34K | Mar 1995 – Mar 2000 |
| West State G-10-264429 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 13 | 602K | Oct 2010 – Aug 2026 |
| West Ranch G-10-183909 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 13 | 688K | Aug 2001 – Apr 2024 |
| West Ranch G-10-257745 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 12 | 1.41M | Nov 2009 – May 2023 |
| Dcrc Section 88 O-4-13692 | Dewbre, Jerry C., Trustee only | Casa Blanca, West | Duval | 1 | 12 | 0 | Feb 2012 – Feb 2012 |
| Cole, M. T. Trust Two "A" G-13-185075 | Devon Energy Production Co, L.P. only | Newark, East (Barnett Shale) | Denton | 1 | 12 | 413K | Sep 2001 – Aug 2009 |
| Randee Fawcett Trust G-9-213982 | Upp Operating, LLC only | Sawyer (Canyon) | Sutton | 1 | 12 | 153K | Jul 2005 – Jul 2026 |
| Haynes Mineral Trust G-4-217123 | Hilcorp Energy Company only | Haynes (Middle Wilcox Cons.) | Zapata | 1 | 12 | 397K | Feb 2006 – Jul 2026 |
| West Ranch G-10-259415 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 12 | 826K | Mar 2010 – Apr 2024 |
| West Ranch G-10-251514 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 12 | 769K | May 2009 – Apr 2024 |
| West Ranch South 4 G-10-253748 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 12 | 1.08M | May 2009 – Apr 2024 |
| Delozeis Family Trust G-4-213592 | Hilcorp Energy Company only | Exsun (Lobo Cons.) | Zapata | 1 | 12 | 386K | May 2005 – Aug 2026 |
| West Ranch G-10-247191 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 12 | 44.6K | Nov 2008 – Feb 2025 |
| West Ranch G-10-224186 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 12 | 387K | Jun 2006 – Jul 2026 |
| West Ranch G-10-259370 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 11 | 767K | Aug 2010 – Feb 2024 |
| Allison G-10-261642 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 11 | 260K | Aug 2010 – Apr 2024 |
| Kincaid, A. R. Trust 'D' G-9-282827 | Scout Energy Management LLC only | Lin (Wolfcamp) | Crockett | 1 | 11 | 1.84K | May 2017 – Aug 2026 |
| Longfellow G-10-256466 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 11 | 201K | Nov 2008 – Aug 2026 |
| Rundall Trust Unit G-3-215088 | Cobra Oil & Gas Corporation only | Maple Branch (Yegua) | Walker | 1 | 10 | 267K | Nov 2005 – Jul 2008 |
| Rowan Estate Trust G-13-183549 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Wise | 1 | 10 | 2.97M | Jun 2001 – Aug 2026 |
| West Ranch G-10-239314 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 10 | 546K | Nov 2007 – Apr 2024 |
| West Ranch G-10-237959 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 10 | 132K | Feb 2008 – Aug 2026 |
| Hill-Fawcett, Randee Trust "E" G-9-106143 | Upp Operating, LLC only | Sawyer (Canyon) | Sutton | 1 | 10 | 470K | by Jan 1993 – Jul 2026 |
| West Ranch G-10-261458 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 10 | 85.2K | Oct 2009 – Sep 2025 |
| 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-10-229638 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 10 | 36.2K | Jul 2007 – May 2026 |
| Bruni Mineral Trust "A" G-4-84519 | Hilcorp Energy Company only | Juanita (Lobo) | Webb | 1 | 10 | 15.3K | Apr 1993 – Oct 2001 |
| Le Tulle Est. "B" G-3-165301 | Prime Operating Company only | Rusty (2700) | Matagorda | 1 | 10 | 37.2K | Sep 1997 – Aug 1998 |
| Allison 4 G-10-248908 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 10 | 1.59M | Nov 2008 – Apr 2024 |
| El Peyote Mineral Trust G-4-166416 | TD Natural Resources LLC only | Loma Vieja (Wilcox) | Zapata | 1 | 10 | 3.09M | Dec 1997 – Jun 2004 |
| Mitchell Trust GU G-6-245169 | Craton Operating LLC only | Carthage (Haynesville Shale) | Shelby | 1 | 10 | 187K | Dec 2008 – Apr 2010 |
| Turner Trust Unit G-13-222908 | XTO Energy Inc. only | Newark, East (Barnett Shale) | Tarrant | 1 | 10 | 280K | May 2006 – Sep 2009 |
| West Ranch South 4 G-10-242197 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 10 | 842K | Aug 2008 – Apr 2024 |
| Preston Trust O-13-14060 | Bastrop Oil & Gas, Inc. only | Wichita County Regular | Wichita | 6 | 9 | 1 | Nov 1993 – Aug 1994 |