| Henderson Trust "BB" G-9-144182 | Red Stag Operating, LLC only | Ozona, SW. (Strawn) | Crockett | 1 | 962 | 434K | Mar 1993 – Jul 2014 |
| Haynes, Leonard G-4-164984 | Hunt, Wm. Herbert, Trust Est. only | Charco (9900) | Zapata | 1 | 955 | 106K | Oct 1997 – Jun 1998 |
| West Ranch G-10-227394 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 953 | 2.48M | Jan 2007 – Feb 2025 |
| Longfellow State 600 G-10-239358 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 943 | 31K | Jan 2008 – Jan 2017 |
| Corpus Christi Bank & Trust G-4-180273 | Magnum Producing & Operating Co. only | Plymouth (5200) | San Patricio | 1 | 939 | 86.1K | Sep 2000 – Dec 2001 |
| Kincaid, A. R. Trust 'C' G-9-144126 | Texaco E & P Inc. only | Davidson Ranch (Penn. 7890) | Crockett | 1 | 938 | 183K | Feb 1993 – Mar 1996 |
| North Hayter Trust G-6-207851 | Wallace Operating Company LLC only | Douglass, W. (Travis Peak) | Nacogdoches | 1 | 937 | 1.46M | Jan 2005 – Aug 2024 |
| West Ranch G-10-247964 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 935 | 768K | Nov 2008 – Aug 2026 |
| Harris Trust G-6-238762 | TGNR East Texas II LLC only | Woodlawn (Cotton Valley) | Harrison | 1 | 931 | 137K | Feb 2008 – Apr 2013 |
| West Ranch G-10-178072 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 931 | 1.27M | Jul 2000 – Jul 2026 |
| Yarbrough Trust G-5-156211 | Lodestone Operating, Inc. only | Oletha (Travis Peak) | Limestone | 1 | 927 | 1.46M | Oct 1995 – Aug 2026 |
| North Hayter Trust A G-6-202948 | Texian Operating Company, LLC only | Douglass, W. (Travis Peak) | Nacogdoches | 1 | 926 | 540K | Jun 2004 – Aug 2026 |
| Wimberly Family Trust G-13-240018 | Oakridge Oil and Gas, LP only | Newark, East (Barnett Shale) | Jack | 1 | 916 | 88.7K | Aug 2007 – Dec 2008 |
| Garza, Amando Trust G-4-225662 | Hilcorp Energy Company only | Charco (9900) | Zapata | 1 | 916 | 5.03M | Jan 2007 – Aug 2026 |
| Ramirez Mineral Trust A G-4-184435 | Hilcorp Energy Company only | Flores, W. (Perdido) | Zapata | 1 | 916 | 671K | May 2001 – Aug 2026 |
| Shannon Parker Trust G-13-250431 | Eagleridge Operating, LLC only | Newark, East (Barnett Shale) | Somervell | 1 | 915 | 214K | Jan 2009 – Apr 2013 |
| Henderson Trust "GG" G-9-154420 | Red Stag Operating, LLC only | Ozona, SW. (Strawn) | Crockett | 1 | 914 | 364K | Feb 1995 – Aug 2026 |
| Laird, S.S. Est. et Al G-6-206245 | Long Trusts, The only | Oak Hill (Cotton Valley) | Rusk | 1 | 903 | 799K | Sep 2004 – Jul 2026 |
| North Hayter Trust G-6-201345 | Texian Operating Company, LLC only | Douglass, W. (Travis Peak) | Nacogdoches | 1 | 901 | 929K | Mar 2004 – Aug 2026 |
| West Ranch G-10-205908 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 900 | 459K | Oct 2004 – Aug 2026 |
| West Ranch G-10-243601 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 898 | 1.21M | Nov 2007 – Jul 2026 |
| Legacy Trust A-170 G-2-221123 | Hunt Oil Company only | Giv'n Take (Roeder Sand) | Lavaca | 1 | 897 | 1.33M | Jun 2006 – Jan 2011 |
| Creek Ranch 10 G-9-155668 | Conocophillips Company only | Pakenham (Thrusted) | Terrell | 1 | 895 | 13.2K | Jul 1995 – Dec 1996 |
| Bragg Trust G-5-176082 | Encana Oil & Gas(usa) Inc. only | Neal (Bossier) | Freestone | 1 | 887 | 211K | Dec 1999 – Oct 2012 |
| Allison G-10-198036 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 883 | 5.19M | Sep 2003 – Mar 2024 |
| Cole Trust Two G-13-176063 | BKV Barnett II, LLC only | Newark, East (Barnett Shale) | Denton | 1 | 880 | 192K | Jan 2000 – Oct 2003 |
| Allison G-10-247227 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 880 | 431K | Nov 2008 – Jan 2026 |
| Bailey, James Trustee G-3-150010 | Shana Petroleum Company only | Paul (LW-18) | Colorado | 1 | 878 | 27.9K | May 1994 – Sep 1994 |
| West Ranch G-10-220986 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 863 | 746K | Sep 2005 – Feb 2025 |
| West Ranch G-10-230911 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 861 | 416K | Jan 2007 – Aug 2026 |
| West Ranch G-10-249999 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 852 | 135K | Dec 2008 – Oct 2024 |
| Hewes, Rebecca Wright G-6-195968 | Long Trusts, The only | Oak Hill (Cotton Valley) | Rusk | 1 | 845 | 708K | Jun 2003 – Jul 2026 |
| Shannon Parker Trust G-13-240013 | Eagleridge Operating, LLC only | Newark, East (Barnett Shale) | Somervell | 1 | 844 | 137K | Jun 2008 – Apr 2013 |
| Tucker Trust G. U. "A" G-3-113132 | R&R Resources Corporation only | Katy (First Wilcox) | Harris | 1 | 844 | 81K | by Jan 1993 – Jan 1998 |
| West Ranch G-10-195246 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 844 | 1.64M | May 2003 – Jul 2026 |
| Reid Trust G-14-118896 | Garrison Bros Pipe&used Eq. Inc only | Glazier (Morrow Upper) | Hemphill | 1 | 843 | 199K | by Jan 1993 – Jul 1998 |
| Bruni Mineral Trust G-4-154928 | Hilcorp Energy Company only | Liz (9200) | Webb | 1 | 840 | 2.03M | Jul 1995 – Aug 2026 |
| Hewes, Rebecca Wright G-6-193047 | Long Trusts, The only | Oak Hill (Cotton Valley) | Rusk | 1 | 830 | 514K | Jun 2003 – Jul 2026 |
| West Ranch G-10-238780 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 829 | 1.22M | Feb 2008 – Jan 2025 |
| Gonzales Benavides Trust G-4-213678 | Chesapeake Operating, L.L.C. only | Lopeno, NE (Wilcox Lower) | Zapata | 1 | 829 | 1.43M | Sep 2005 – Aug 2013 |
| West Ranch G-10-239336 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 827 | 577K | Dec 2007 – Dec 2025 |
| West Ranch G-10-218839 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 825 | 3.02M | Mar 2006 – Apr 2024 |
| West Ranch G-10-234607 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 821 | 3.53K | Jul 2007 – Apr 2015 |
| Bruni Mineral Trust "A" G-4-115213 | Hilcorp Energy Company only | Juanita (Lobo) | Webb | 1 | 819 | 134K | by Jan 1993 – Sep 2019 |
| Mayo Trusts G-4-223030 | Hilcorp Energy Company only | Eschberger (11,700) | Nueces | 1 | 812 | 72.5K | Nov 2006 – Nov 2010 |
| Brooks Trust G-2-232236 | Dirks Petroleum Company only | Cadiz (2ND Slick Wilcox) | Bee | 1 | 805 | 72.7K | Oct 2007 – Dec 2008 |
| Flying LL Trust G-6-247618 | Buffco Production Inc. only | Willow Springs (Travis Peak) | Harrison | 1 | 805 | 52.3K | Jul 2019 – Aug 2026 |
| Hill-Randee Fawcett Trust "K" G-9-211722 | Upp Operating, LLC only | Sawyer (Canyon) | Sutton | 1 | 800 | 364K | Mar 2005 – Jul 2026 |
| Frost Trust G-4-153706 | Proline Energy Resources Inc only | Shockacon (Wilcox 6700) | Webb | 1 | 800 | 205K | Oct 1994 – Aug 2026 |
| Alamo National Bank Trustee G-1-66926 | Virtex Petroleum Company, Inc. only | Little Alamo (6100) | McMullen | 1 | 798 | 30.2K | by Jan 1993 – Oct 1994 |