| Royall, John Trust et Al G-6-183013 | Eqv Operating LLC only | Cayuga (Pettit) | Anderson | 1 | 3.94K | 358K | Sep 2001 – Dec 2018 |
| Frey Trust Gas Unit G-3-197074 | Neumin Production Company only | Hinkle (Cockfield 5800) | Harris | 1 | 3.93K | 769K | Aug 2003 – Jun 2005 |
| Hanger Trust G-13-208468 | Eagleridge Operating, LLC only | Newark, East (Barnett Shale) | Johnson | 1 | 3.93K | 1.67M | Mar 2005 – Aug 2026 |
| Armour Trust, et Al G-3-282570 | Hilcorp Energy Company only | Phase Four (9050 Yegua) | Wharton | 1 | 3.92K | 14K | Mar 2017 – Aug 2017 |
| Begert Trust 32 G-14-253347 | Bce-Mach II LLC only | Begert (10,200) | Hemphill | 1 | 3.91K | 417K | Jun 2009 – Aug 2026 |
| Kincaid, A. R. Trust "B" G-9-165457 | Scout Energy Management LLC only | Ozona, NE. (Canyon Sand) | Crockett | 1 | 3.9K | 272K | Oct 1997 – Aug 2026 |
| E.r.rhodes Trust Gas Unit 1 G-2-220782 | Falcon Production LLC only | Kawitt (Edwards) | Karnes | 1 | 3.89K | 1.56M | Mar 2006 – Jun 2017 |
| Zeidman Trustee G-3-164161 | Mountain V Texas, LLC only | Peach (Yegua, Lower) | Wharton | 1 | 3.89K | 23.5K | Apr 1997 – Apr 2008 |
| West Ranch G-10-234783 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 3.87K | 765K | Sep 2007 – Aug 2026 |
| Flowers Trust -B- G-14-91520 | Mmgl Txph, LLC only | Mendota, NW. (Granite Wash) | Roberts | 1 | 3.84K | 400K | by Jan 1993 – Jul 2010 |
| Mitchell 9 G-9-160390 | OXY USA Inc. only | Pakenham (Thrusted) | Terrell | 1 | 3.82K | 232K | Apr 1996 – May 1998 |
| Stewart Trust State GU G-4-273014 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 3.82K | 2.93M | Sep 2013 – Aug 2026 |
| Barrera, Teresa Trust G-4-249772 | Hilcorp Energy Company only | El Staggs (7330) | Hidalgo | 1 | 3.79K | 297K | Nov 2008 – Jan 2016 |
| West Ranch G-10-239291 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 3.78K | 86.9K | Feb 2008 – Feb 2025 |
| Jones Trust -25- G-14-148150 | Chesapeake Operating, Inc. only | Canadian, SE (Douglas) | Hemphill | 1 | 3.78K | 656K | Dec 1993 – May 2007 |
| West Ranch G-10-234722 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 3.77K | 774K | Oct 2007 – Aug 2026 |
| West Ranch G-10-245321 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 3.75K | 1.67M | Oct 2008 – Aug 2026 |
| Smith Family Trust Gas Unit G-6-234531 | Weatherly Oil & Gas, LLC only | Naconiche Creek (Rod.-TP Cons.) | Rusk | 1 | 3.74K | 107K | Nov 2007 – Jun 2019 |
| Jones Trust -24- G-14-188782 | Unbridled Resources, LLC only | Canadian, SE (Douglas) | Hemphill | 1 | 3.74K | 626K | Apr 2002 – Aug 2024 |
| Cameron Mineral Trust G-6-219719 | Culver & Cain Production LLC only | Red Land,north (Travis Peak) | Angelina | 1 | 3.74K | 966K | Mar 2006 – Aug 2026 |
| Share Trust G-14-166921 | Upland Resources LLC only | Perryton Prince (Morrow Basal) | Ochiltree | 1 | 3.73K | 1.27M | Dec 1997 – Jun 2026 |
| Boston Texas Land & Trust G-4-181592 | Shell Western E&P only | Jeffress, N (Vksbg, LO) | Hidalgo | 1 | 3.71K | 509K | Mar 2001 – Mar 2005 |
| West Ranch G-10-273784 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 3.7K | 251K | Apr 2010 – Apr 2024 |
| Henderson Trust "BB" G-9-146544 | Red Stag Operating, LLC only | Ozona, NE. (Canyon Sand) | Crockett | 1 | 3.69K | 195K | Aug 1993 – Aug 2026 |
| West Ranch G-10-170424 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 3.68K | 15.5M | Aug 1998 – Feb 2024 |
| Talbutt Trust G-1-291190 | Javelin Energy Partners Mgmt LLC only | Eagleville (Eagle Ford-1) | La Salle | 1 | 3.67K | 46.4K | Dec 2016 – Aug 2020 |
| Merritt, Thos. C. Trust Gas Unit G-6-144832 | Chisos, Ltd. only | Oak Hill (Cotton Valley) | Rusk | 1 | 3.65K | 1.19M | Feb 1993 – Jul 2020 |
| Frost Trust 7 G-4-185470 | Hilcorp Energy Company only | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 3.63K | 1.29M | Sep 2001 – Aug 2026 |
| Bruni Mineral Trust 'A' G-4-142386 | Hilcorp Energy Company only | Cerrito Creek (Wilcox) | Webb | 1 | 3.63K | 414K | by Jan 1993 – Dec 2015 |
| Kincaid, A. R. Trust 'D' G-9-143657 | Scout Energy Management LLC only | Davidson Ranch (Penn. 7890) | Crockett | 1 | 3.62K | 947K | Feb 1993 – Jan 1998 |
| Mitchell 11 G-9-162145 | OXY USA Inc. only | Pakenham (Thrusted) | Terrell | 1 | 3.61K | 464K | Oct 1996 – Sep 2002 |
| West Ranch G-10-234606 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 3.6K | 2.5M | Oct 2007 – Aug 2026 |
| Kincaid, A. R. Trust G-9-86362 | Scout Energy Management LLC only | Ozona, NE. (Canyon Sand) | Crockett | 1 | 3.57K | 360K | by Jan 1993 – Aug 2026 |
| Gage Trustee "A" G-13-186579 | Devon Energy Production Co, L.P. only | Newark, East (Barnett Shale) | Wise | 1 | 3.56K | 55.3K | Oct 2001 – Dec 2006 |
| Bruni Mineral Trust 'A' G-4-150006 | Hilcorp Energy Company only | Cerrito Creek (Wilcox) | Webb | 1 | 3.54K | 470K | May 1994 – Feb 2009 |
| Kincaid, A. R. Trust "B" G-9-153150 | Scout Energy Management LLC only | Ozona, NE. (Canyon Sand) | Crockett | 1 | 3.52K | 283K | Jan 1995 – Jun 2014 |
| Guaranty Title & Trust G-4-200491 | Pine Island Operating, L.L.C. only | Saxet, Deep (9900) | Nueces | 1 | 3.51K | 285K | Jan 2004 – Jul 2010 |
| Frost Trust G-4-149058 | McRae & Henry, Ltd only | Shockacon (Wilcox 6700) | Webb | 1 | 3.49K | 914K | Feb 1994 – Oct 2007 |
| Flowers Trust -B- G-14-91326 | Mmgl Txph, LLC only | Mendota, NW. (Douglas, Lo.) | Roberts | 1 | 3.49K | 604K | by Jan 1993 – Apr 2010 |
| West Ranch G-10-242196 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 3.48K | 3.55M | Jul 2008 – Feb 2025 |
| West Ranch G-10-250052 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 3.45K | 465K | Dec 2008 – Jan 2026 |
| West Ranch G-10-239342 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 3.45K | 92.5K | Jan 2008 – Apr 2026 |
| Bruni Mineral Trust 'A' G-4-149936 | Hilcorp Energy Company only | Cerrito Creek (Lobo 1) | Webb | 1 | 3.45K | 1.07M | May 1994 – Aug 2026 |
| Bruni Mineral Trust "C" G-4-172813 | Killam Oil Co., Ltd. only | B.M.T. (Lobo Cons.) | Webb | 1 | 3.45K | 1.76M | Feb 1999 – Jul 2017 |
| Henderson Trust GG G-9-146486 | Red Stag Operating, LLC only | Ozona, NE. (Canyon Sand) | Crockett | 1 | 3.44K | 456K | Aug 1993 – Aug 2026 |
| Bruni Mineral Trust "B" G-4-197665 | Hilcorp Energy Company only | Hubberd (Lobo) | Webb | 1 | 3.43K | 892K | Aug 2003 – May 2018 |
| WLM Trust-Wilbeck Unit G-3-188257 | Forest Oil Corporation only | W. D. McMillan (Yegua 9650) | Wharton | 1 | 3.39K | 55K | Mar 2002 – Jun 2008 |
| Henderson Trust E G-9-191540 | Apache Corporation only | Howards Creek (Canyon) | Crockett | 1 | 3.36K | 351K | Oct 2002 – Aug 2026 |
| Swafford Trust "31" G-10-172340 | Highpeak Energy Holdings, LLC only | Signal Peak (Wolfcamp) | Howard | 1 | 3.36K | 519K | Dec 1998 – Aug 2026 |
| Longfellow G-10-187601 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 3.36K | 903K | Jan 2002 – Apr 2024 |