| Houston -23- O-10-29533 | Hendon Wm E. Jr. Rev Lvng Trust only | Hei (Wolfcamp) | Glasscock | 1 | 3.58K | 170 | by Jan 1993 – Mar 2019 |
| 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 |
| Joe Shown Trust Unit O-13-32218 | G & F Oil, Inc. only | Antelope,s.e. (Marble Falls) | Jack | 1 | 3.56K | 17.9K | Apr 2012 – Jul 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 |
| Yardley Trust O-8-31531 | Scout Energy Management LLC only | Gloria Gay, NW. (Ellen.) | Stonewall | 2 | 3.52K | 0 | Jun 2014 – Apr 2016 |
| 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 |
| Smith Trust O-6-12128 | Cox & Cox Production Co. only | Tully, SW (Paluxy) | Franklin | 1 | 3.51K | 21 | by Jan 1993 – Aug 1996 |
| 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 |
| Iowa Realty Trust 123 "A" O-10-23039 | Last Mile Production, LLC only | Brooklaw (Clear Fork, Lower) | Pecos | 3 | 3.48K | 657 | by Jan 1993 – Feb 2009 |
| West Ranch G-10-242196 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 3.48K | 3.55M | Jul 2008 – Feb 2025 |
| Family Land Heritage Trust O-6-14769 | Indigo Resources LLC only | Danville (TP-CV Cons.) | Gregg | 1 | 3.45K | 85K | Feb 2008 – Oct 2017 |
| West Ranch G-10-250052 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 3.45K | 465K | Dec 2008 – Jan 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 |
| West Ranch G-10-239342 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 3.45K | 92.5K | Jan 2008 – Apr 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 |
| University 3 C O-10-25754 | Aaa Oil Trust only | Cardinal (Queen, W. ) | Pecos | 2 | 3.4K | 21K | by Jan 1993 – Oct 2008 |
| 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 |
| Corpus Christi Bank & Trust O-4-11731 | Magnum Producing, LP only | Plymouth (5530) | San Patricio | 1 | 3.39K | 762 | by Jan 1993 – Feb 1997 |
| Henderson Trust "N" O-9-11772 | Apache Corporation only | Howards Creek (Canyon) | Crockett | 1 | 3.39K | 71.3K | by Jan 1993 – Jun 2005 |
| 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 |
| Henderson Trust "NN" G-9-142864 | Red Stag Operating, LLC only | Ozona, SW. (Strawn) | Crockett | 1 | 3.35K | 280K | by Jan 1993 – May 2014 |
| Stewart Trust G-4-266968 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 3.35K | 2.74M | Sep 2011 – Aug 2026 |
| West Ranch G-10-239305 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 3.35K | 108K | Mar 2008 – Oct 2025 |
| West Ranch 5 G-10-173438 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 3.34K | 10.4M | May 1999 – Feb 2024 |
| Lutheran Church G-6-221620 | Long Trusts, The only | Beckville (Cotton Valley) | Panola | 1 | 3.34K | 714K | Mar 2006 – Jul 2026 |
| Martin Trust -A- G-14-125144 | Presidio Petroleum LLC only | Clark Martin (Granite Wash) | Roberts | 1 | 3.3K | 203K | by Jan 1993 – Aug 2022 |
| Kincaid, A. R. Trust G-9-19111 | Scout Energy Management LLC only | Ozona, NE. (Canyon Sand) | Crockett | 1 | 3.28K | 316K | by Jan 1993 – Aug 2026 |
| Merritt, Thomas C. Trustee G-6-96605 | Eqv Operating LLC only | Oak Hill (Cotton Valley) | Rusk | 1 | 3.28K | 1.38M | by Jan 1993 – Aug 2026 |
| University 11B O-10-27621 | Aaa Oil Trust only | Cardinal (Queen, W. ) | Pecos | 1 | 3.28K | 24.4K | by Jan 1993 – Oct 2008 |
| Kincaid, A. R. Trust "D" G-9-81624 | Scout Energy Management LLC only | Davidson Ranch (Penn. 7890) | Crockett | 1 | 3.27K | 559K | by Jan 1993 – Sep 1997 |
| McCarthy Family Trust 97 G-3-209492 | C & E Operating, Inc. only | Seabreeze, N. (Marg 7) | Chambers | 1 | 3.27K | 508K | Apr 2005 – Jun 2006 |
| Hinkson O-8-28704 | Dodson Prairie Oil & Gas LLC only | Maxwell Trust (Congl.) | Palo Pinto | 1 | 3.26K | 62.2K | Oct 1999 – Jan 2015 |
| Powell, Brandt O-8-20251 | Family Trust B, The only | Coleman County Regular | Coleman | 2 | 3.24K | 8.67K | by Jan 1993 – May 2016 |
| Willingham Family Trust G-13-224762 | Eagleridge Operating, LLC only | Newark, East (Barnett Shale) | Palo Pinto | 1 | 3.22K | 251K | Oct 2006 – Sep 2015 |
| Lutheran Church G-6-247048 | Long Trusts, The only | Carthage (Haynesville Shale) | Panola | 1 | 3.22K | 533K | Jul 2008 – Jul 2026 |
| West Ranch G-10-230707 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 3.22K | 1.09M | Oct 2007 – Apr 2026 |
| Alexander Trust Lease O-13-33828 | Legacy Exploration, LLC I only | Post Oak, W. (Ellen.) | Jack | 1 | 3.17K | 52.4K | Sep 2017 – Jul 2022 |
| Parker Trust 19 O-10-40973 | Acoma Operating, LLC only | Goldsmith (Clear Fork) | Ector | 1 | 3.17K | 8.01K | Mar 2011 – Sep 2013 |
| Lee Trust O-14-7295 | Mobeetie Resource Dev LLC only | Mobeetie (Missouri Basal) | Wheeler | 1 | 3.16K | 7.9K | Jun 1998 – Mar 2000 |
| Hunter Trust 'A' O-10-46024 | Trigeo Energy, LLC only | Spraberry (Trend Area) | Sterling | 2 | 3.14K | 5.37K | Jul 2014 – Mar 2016 |
| Longfellow G-10-165275 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 3.14K | 1.48M | Jul 1997 – Jan 2026 |
| Bruni Mineral Trust North TR "A" G-4-168431 | Lakeshore Operating, LLC only | Valley (Navarro) | Webb | 1 | 3.14K | 3.59M | Dec 1998 – Aug 2026 |
| West Ranch G-10-234742 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 3.12K | 210K | Oct 2007 – Dec 2024 |