| West Ranch G-10-190215 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 1.35K | 1.74M | Jun 2002 – Dec 2025 |
| Henderson Trust G-9-218624 | Apache Corporation only | Howards Creek (Canyon) | Crockett | 1 | 1.35K | 822K | Jan 2006 – Aug 2026 |
| Jones Trust -24- G-14-190314 | Unbridled Resources, LLC only | Canadian, SE (Douglas) | Hemphill | 1 | 1.34K | 219K | Jul 2002 – Mar 2014 |
| North Hayter Trust G-6-195682 | Texian Operating Company, LLC only | Douglass, W. (Travis Peak) | Nacogdoches | 1 | 1.33K | 1.61M | Jun 2003 – Jan 2025 |
| Allison G-10-219533 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 1.33K | 7.56M | Dec 2005 – Apr 2024 |
| Allison G-10-178071 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 1.33K | 6.54M | Jul 2000 – Apr 2024 |
| Bruni Mineral Trust "A" G-4-117180 | Hilcorp Energy Company only | Juanita (Lobo) | Webb | 1 | 1.32K | 627K | by Jan 1993 – Aug 2026 |
| Flowers Trust G-14-93150 | Mmgl Txph, LLC only | Mendota, NW. (Douglas, Lo.) | Roberts | 1 | 1.31K | 317K | by Jan 1993 – Oct 2017 |
| Laird, S. S. Est. et Al G-6-97650 | Long Trusts, The only | Oak Hill (Cotton Valley) | Rusk | 1 | 1.3K | 525K | by Jan 1993 – Jul 2026 |
| Ruppe Trust GU 1 G-6-254398 | TGNR East Texas II LLC only | Carthage (Haynesville Shale) | Harrison | 1 | 1.3K | 3.14M | Oct 2009 – Aug 2026 |
| Henderson Trust GG G-9-157330 | Red Stag Operating, LLC only | Ozona, NE. (Canyon Sand) | Crockett | 1 | 1.29K | 127K | Jan 1996 – Aug 2026 |
| West State G-10-201372 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 1.29K | 351K | Feb 2004 – Aug 2026 |
| Mitchell 9 G-9-208398 | Hilcorp Energy Company only | Pakenham (Thrusted) | Terrell | 1 | 1.27K | 92.4K | Aug 2004 – Sep 2017 |
| Hewes, Rebecca Wright G-6-100851 | Long Trusts, The only | Oak Hill (Cotton Valley) | Rusk | 1 | 1.27K | 1.12M | by Jan 1993 – Jul 2026 |
| Walker Trust G-14-64813 | BP America Production Company only | Dutcher (Cleveland) | Ochiltree | 1 | 1.26K | 90.6K | by Jan 1993 – Aug 2001 |
| Watkins Scholarship Trust G-6-239224 | Sabine Energy Inc. only | Minden (Cotton Valley Cons.) | Rusk | 1 | 1.26K | 358K | Feb 2008 – Aug 2026 |
| West Ranch G-10-209628 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 1.25K | 67.5K | May 2005 – Feb 2025 |
| Henderson Trust GU G-6-244079 | Wallace Operating Company LLC only | Trawick, West (Travis Peak) | Nacogdoches | 1 | 1.24K | 208K | Feb 2008 – Oct 2016 |
| Flowers Trust -A- G-14-39239 | Blackbeard Operating, LLC only | Mendota, NW. (Morrow, Upper) | Roberts | 1 | 1.24K | 916K | by Jan 1993 – Jul 2020 |
| Bruni Mineral Trust G-4-158738 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Webb | 1 | 1.24K | 4.46M | May 1996 – Aug 2026 |
| Bruni Mineral Trust "A" G-4-88453 | Hilcorp Energy Company only | Juanita (Lobo) | Webb | 1 | 1.24K | 458K | by Jan 1993 – Aug 2026 |
| Hubberd Trust G-4-153776 | Columbus Energy, LLC only | Liz (9200) | Webb | 1 | 1.23K | 873K | Mar 1995 – Jan 2010 |
| Mann Trust - State Gas Unit G-4-270196 | Caturus Energy, LLC only | Owen (Olmos) | Webb | 1 | 1.23K | 1.09M | May 2013 – Aug 2026 |
| Henderson Trust D G-9-145348 | Apache Corporation only | Howards Creek (Canyon) | Crockett | 1 | 1.22K | 282K | Feb 1993 – Aug 2026 |
| West Ranch G-10-224638 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 1.21K | 172K | Nov 2006 – Feb 2025 |
| West Ranch G-10-237133 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 1.21K | 1.94M | Nov 2007 – Aug 2026 |
| Lesley Trust G-13-206638 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Denton | 1 | 1.21K | 3.76M | Dec 2004 – Aug 2026 |
| Martin Trust A G-14-123805 | United Oil & Shale LLC only | Clark Martin (Granite Wash) | Roberts | 1 | 1.21K | 278K | by Jan 1993 – Sep 2009 |
| Boston Texas Land Trust #7 G-4-155846 | Legacy Corporation, The only | Amore (Vicksburg 6200) | Hidalgo | 1 | 1.21K | 247K | Sep 1995 – Jul 1998 |
| Laird, S.S. Est. et Al G-6-178032 | Long Trusts, The only | Oak Hill (Cotton Valley) | Rusk | 1 | 1.2K | 786K | May 2000 – Jul 2026 |
| Frost Trust 39 G-4-186079 | Hilcorp Energy Company only | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 1.19K | 163K | Oct 2001 – Aug 2026 |
| North Hayter Trust G-6-218439 | Texian Operating Company, LLC only | Douglass, W. (Travis Peak) | Nacogdoches | 1 | 1.18K | 1.1M | Jan 2006 – Aug 2026 |
| Bruni Mineral Trust 15 G-4-208866 | Killam Oil Co., Ltd. only | Zwebb (10350) | Zapata | 1 | 1.18K | 720K | Nov 2004 – Jan 2016 |
| Henderson Trust O G-9-223185 | Apache Corporation only | Howards Creek (Canyon) | Crockett | 1 | 1.17K | 95K | Sep 2006 – Aug 2026 |
| Laird, S.S. Est. et Al G-6-202581 | Long Trusts, The only | Oak Hill (Cotton Valley) | Rusk | 1 | 1.16K | 1.03M | Jun 2004 – Jul 2026 |
| Fidelity Trust "21" G-10-186319 | EOG Resources, Inc. only | Waha (Montoya) | Reeves | 1 | 1.16K | 552K | Mar 2001 – Nov 2001 |
| West Ranch G-10-212231 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 1.16K | 5M | May 2005 – Jun 2024 |
| Stewart Trust G-4-260909 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 1.15K | 2.21M | Feb 2012 – Aug 2026 |
| Daly, Scott L. Trustee "A" G-8-250373 | Sage Oil and Gas, LLC only | Cal-Tex (Caddo) | Parker | 1 | 1.14K | 80.1K | Feb 2009 – Oct 2017 |
| Boatmen Trust Co. GU #1 G-5-168668 | Anadarko Petroleum Corporation only | Teague (Travis Peak) | Freestone | 1 | 1.14K | 542K | Apr 1998 – Sep 2011 |
| Jones Trust -26- G-14-190962 | Chesapeake Operating, Inc. only | Canadian, SE (Douglas) | Hemphill | 1 | 1.14K | 39.7K | Sep 2002 – Mar 2009 |
| Shannon Parker Trust G-13-238601 | Eagleridge Operating, LLC only | Newark, East (Barnett Shale) | Somervell | 1 | 1.14K | 593K | Jun 2008 – Apr 2013 |
| Henderson Trust "EE" G-9-144202 | Red Stag Operating, LLC only | Ozona (Canyon Sand) | Crockett | 1 | 1.13K | 988K | by Jan 1993 – Aug 2026 |
| West Ranch G-10-225357 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 1.12K | 191K | Dec 2006 – Apr 2024 |
| Clark, Dorothy Trustee "A" G-5-122431 | Valle Algodon, LLC only | Cheneyboro (Travis Peak) | Navarro | 1 | 1.12K | 24.4K | Feb 1993 – Dec 2022 |
| Marrs McLean Trust -C- G-4-155807 | Columbus Energy, LLC only | Thompsonville, NE. (12500) | Jim Hogg | 1 | 1.11K | 9.74M | Jun 1995 – Aug 2026 |
| Ellis, Carl, Trustee -A- G-14-21915 | Complete Oil & Gas Services, LLC only | Pan Petro (Cleveland) | Ochiltree | 1 | 1.11K | 712K | by Jan 1993 – Jun 2025 |
| West Ranch G-10-219122 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 1.11K | 976K | Apr 2006 – Jan 2026 |
| North Hayter Trust A G-6-213478 | Texian Operating Company, LLC only | Douglass, W. (Travis Peak) | Nacogdoches | 1 | 1.1K | 878K | Jun 2005 – Aug 2026 |
| JBG Childrens 1991 Trust "A" G-3-190075 | Lone Wolf Operating Company only | Brookshire Dome (Miocene 5-1C) | Waller | 1 | 1.1K | 69.3K | Jul 2002 – Jun 2003 |