| Bragg Trust G-5-176082 | Encana Oil & Gas(usa) Inc. only | Neal (Bossier) | Freestone | 1 | 887 | 211K | Dec 1999 – Oct 2012 |
| Wilde O-13-32115 | Bunch Family Oil Trust only | Stricker (Tannehill) | Knox | 1 | 883 | 0 | Feb 2012 – Jan 2014 |
| Allison G-10-198036 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 883 | 5.19M | Sep 2003 – Mar 2024 |
| Allison G-10-247227 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 880 | 431K | Nov 2008 – Jan 2026 |
| Cole Trust Two G-13-176063 | BKV Barnett II, LLC only | Newark, East (Barnett Shale) | Denton | 1 | 880 | 192K | Jan 2000 – Oct 2003 |
| 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 |
| Iowa Realty Trust -123- O-10-21801 | Last Mile Production, LLC only | Tomlaw (Clear Fork 3200) | Pecos | 1 | 856 | 21 | by Jan 1993 – Dec 1994 |
| 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 |
| West Ranch G-10-195246 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 844 | 1.64M | May 2003 – Jul 2026 |
| 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 |
| Reid Trust G-14-118896 | Garrison Bros Pipe&used Eq. Inc only | Glazier (Morrow Upper) | Hemphill | 1 | 843 | 199K | by Jan 1993 – Jul 1998 |
| Bartlett Trust -A- O-1-4797 | Golden Child, Inc. only | Batesville, SW. (San Miguel) | Zavala | 4 | 841 | 14 | by Jan 1993 – Mar 1995 |
| Bruni Mineral Trust G-4-154928 | Hilcorp Energy Company only | Liz (9200) | Webb | 1 | 840 | 2.03M | Jul 1995 – Aug 2026 |
| Odiorne, Truman N., Trustee "A" O-9-12685 | Patton, Lloyd J Estate only | P-C, SW (Strawn, Lower) | Menard | 1 | 840 | 7.82K | by Jan 1993 – Aug 1994 |
| 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 |
| T.C. Smith Family Trust O-5-4510 | Barbee, R.L. Operating, Inc. only | Normangee-Flynn | Leon | 1 | 828 | 0 | Jun 2026 – Aug 2026 |
| 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 |
| Trust Clifton Unit O-8-29067 | Van Operating, Ltd. only | Hillview (Caddo) | Shackelford | 1 | 821 | 1.56K | Jul 2001 – Apr 2002 |
| Bruni Mineral Trust "A" G-4-115213 | Hilcorp Energy Company only | Juanita (Lobo) | Webb | 1 | 819 | 134K | by Jan 1993 – Sep 2019 |
| Brown "A" O-8-28917 | Goopco, Inc. only | Rust Creek (Miss) | Throckmorton | 1 | 819 | 510 | Jan 2001 – Mar 2003 |
| Broussard Trust O-3-9051 | Milestone Operating, Inc. only | Lovells Lake (Frio 2) | Jefferson | 2 | 816 | 3.29K | by Jan 1993 – Jun 2001 |
| Mayo Trusts G-4-223030 | Hilcorp Energy Company only | Eschberger (11,700) | Nueces | 1 | 812 | 72.5K | Nov 2006 – Nov 2010 |
| Flying LL Trust G-6-247618 | Buffco Production Inc. only | Willow Springs (Travis Peak) | Harrison | 1 | 805 | 52.3K | Jul 2019 – Aug 2026 |
| Brooks Trust G-2-232236 | Dirks Petroleum Company only | Cadiz (2ND Slick Wilcox) | Bee | 1 | 805 | 72.7K | Oct 2007 – Dec 2008 |
| Frost Trust G-4-153706 | Proline Energy Resources Inc only | Shockacon (Wilcox 6700) | Webb | 1 | 800 | 205K | Oct 1994 – Aug 2026 |
| Hill-Randee Fawcett Trust "K" G-9-211722 | Upp Operating, LLC only | Sawyer (Canyon) | Sutton | 1 | 800 | 364K | Mar 2005 – Jul 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 |
| West Ranch G-10-224600 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 793 | 999K | Nov 2006 – Jul 2026 |
| Corpus Christi Bank & Trust O-4-12586 | Magnum Producing & Operating Co. only | Taft, North (a-1 Frio) | San Patricio | 1 | 787 | 41.6K | Jul 1996 – Oct 1996 |
| Goss Trust G-3-192178 | Kerr-McGee Oil & Gas Onshore LP only | Iola (Georgetown) | Brazos | 1 | 786 | 14.9K | Oct 2002 – Feb 2005 |
| Joe Shown Trust Unit O-13-30943 | S.B. Street Operating, Inc. only | Newark, East (Barnett Shale) | Jack | 1 | 777 | 12.5K | Jul 2007 – Mar 2012 |
| Longfellow G-10-188927 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 776 | 931K | Apr 2002 – Aug 2026 |
| Ellis, Carl Trustee -A- G-14-153876 | Latigo Petroleum, LLC only | Pan Petro (Cleveland) | Ochiltree | 1 | 775 | 735K | Mar 1995 – Aug 2026 |
| Flowers Trust -A- G-14-227990 | Bce-Mach III LLC only | Mendota, NW. (Morrow, Upper) | Roberts | 1 | 770 | 1.94M | Mar 2007 – Mar 2025 |
| Meade Trust O-13-19581 | Thompson, Mark P. only | Archer County Regular | Archer | 4 | 770 | 17 | by Jan 1993 – Jul 1998 |
| North Hayter Trust G-6-197898 | Texian Operating Company, LLC only | Douglass, W. (Travis Peak) | Nacogdoches | 1 | 769 | 419K | Sep 2003 – Aug 2026 |
| West Ranch G-10-252994 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 769 | 1.01M | May 2009 – Apr 2024 |
| C. M. Morton Share Trust O-14-8055 | Rig Petroleum, LLC only | Farnsworth-Conner (Kansas City) | Ochiltree | 1 | 768 | 24.9K | Feb 2009 – Jan 2017 |
| Trust "H. T. & B." Unit O-8-27520 | Van Operating, Ltd. only | Fort Griffin, NE. (Miss) | Shackelford | 1 | 764 | 43.8K | Feb 1995 – Sep 1995 |
| North Hayter Trust G-6-213958 | Texian Operating Company, LLC only | Douglass, W. (Travis Peak) | Nacogdoches | 1 | 763 | 777K | May 2005 – Aug 2026 |
| Melton, Edward, Trust O-13-17383 | Boland Tank Trucks only | Goree, NW. (Tannehill) | Knox | 3 | 762 | 55 | by Jan 1993 – May 1998 |
| Cameron Minerals Trust G-3-107165 | Garrison Operating, L.L.C. only | Glendale (Woodbine, Lower) | Trinity | 1 | 761 | 151K | by Jan 1993 – Jun 2013 |