| Bruni Mineral Trust 'A' G-4-150058 | Hilcorp Energy Company only | B.M.T. (Lobo Cons.) | Webb | 1 | 2.31K | 716K | Jun 1994 – Aug 2026 |
| Fidelity Trust G-10-173742 | BP America Production Company only | Waha (Delaware) | Reeves | 1 | 2.3K | 71K | Jun 1999 – Apr 2009 |
| Los Ojuelos Mineral Trust G-4-246236 | Rincon Petroleum Corporation only | Pancho (Wilcox) | Webb | 1 | 2.3K | 324K | Jan 2007 – Aug 2020 |
| Broussard Trust G-3-250035 | Milestone Operating, Inc. only | Lovells Lake (Marg. 7500) | Jefferson | 1 | 2.3K | 513K | Apr 2009 – May 2016 |
| Longfellow 130 G-10-225557 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 2.29K | 42.4K | Aug 2006 – Oct 2025 |
| Mitchell - Williams Trust G-5-213583 | Valence Operating Company only | Loper (Cotton Valley Lime) | Freestone | 1 | 2.27K | 355K | May 2005 – Aug 2026 |
| Jones Trust "21" G-14-193610 | Mewbourne Oil Company only | Canadian, SE (Douglas) | Hemphill | 1 | 2.26K | 1.85M | Mar 2003 – Aug 2026 |
| Garza-Zamora Energy Trust G-4-223662 | Merit Energy Company only | Flores, W. (Vksbrg, Geopressure) | Hidalgo | 1 | 2.26K | 268K | Dec 2006 – Aug 2026 |
| West Ranch G-10-250400 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 2.24K | 1.32M | Dec 2008 – Jul 2026 |
| Read Trust "A" G-14-189964 | Presidio Petroleum LLC only | Hemphill (Douglas) | Hemphill | 1 | 2.23K | 184K | Oct 2002 – Aug 2008 |
| De la Garza Mineral Trust A G-4-166868 | Petro-Smith Operating LLC only | Picoso (Wilcox 7600) | Webb | 1 | 2.23K | 736K | Jan 1998 – Feb 2018 |
| Flowers Trust "B" G-14-171716 | BP America Production Company only | Mendota, NW. (Granite Wash) | Roberts | 1 | 2.22K | 159K | Nov 1998 – Dec 2002 |
| West Ranch G-10-240077 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 2.21K | 1.19M | Apr 2008 – Jul 2026 |
| West Ranch G-10-249756 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 2.2K | 31.8K | Jan 2008 – Feb 2025 |
| West Ranch G-10-249292 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 2.19K | 421K | Jan 2009 – Mar 2024 |
| Longfellow 600 MD G-10-240640 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 2.19K | 3.46M | Mar 2008 – Aug 2026 |
| James Trust G-4-146484 | Lewis Petro Properties, Inc. only | Tom Walsh (Olmos) | Webb | 1 | 2.19K | 758K | Sep 1993 – Jun 2026 |
| Bruni Mineral Trust "B" G-4-262327 | Hilcorp Energy Company only | Liz (Lobo 6) | Webb | 1 | 2.17K | 352K | May 2010 – Aug 2026 |
| Henderson Trust "GG" G-9-144670 | Red Stag Operating, LLC only | Ozona, SW. (Strawn) | Crockett | 1 | 2.17K | 1.12M | by Jan 1993 – Aug 2026 |
| West Ranch G-10-238776 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 2.16K | 3.92M | Mar 2008 – May 2026 |
| MDC Trust G-13-240119 | Eagleridge Operating, LLC only | Newark, East (Barnett Shale) | Erath | 1 | 2.13K | 308K | Feb 2008 – Mar 2017 |
| Cuellar Trust "a" GU G-4-161602 | EOG Resources, Inc. only | Cisco-Benavides (Lobo Cons.) | Zapata | 1 | 2.13K | 1.72M | Dec 1996 – Aug 2000 |
| Kincaid, A. R. Trust "B" G-9-19119 | Scout Energy Management LLC only | Ozona, East (Ellenburger) | Crockett | 1 | 2.13K | 479K | by Jan 1993 – Apr 2010 |
| Longfellow G-10-244896 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 2.12K | 1.11M | Jul 2008 – Aug 2026 |
| Cole Trust Stony G-13-187578 | BKV Barnett II, LLC only | Newark, East (Barnett Shale) | Denton | 1 | 2.11K | 220K | Feb 2002 – Aug 2026 |
| Sauder Land Trust G-13-161104 | BKV Barnett, LLC only | Boonsville (Bend Congl., Gas) | Wise | 1 | 2.1K | 634K | Nov 1996 – Aug 2026 |
| Barton Trust 379 G-14-204564 | Complete Oil & Gas Services, LLC only | Lipscomb (Cleveland) | Lipscomb | 1 | 2.1K | 1.39M | Aug 2004 – Sep 2022 |
| Cousins Living Trust G-1-153078 | Padon, Frank B. Oil Oper., Inc. only | Cousins (Slick-Wilcox) | McMullen | 1 | 2.07K | 118K | Feb 1995 – Aug 1995 |
| Allison 4 G-10-274620 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 2.07K | 18.1M | Sep 2010 – Apr 2024 |
| Hudgins Trust G-13-288512 | Atoka Operating, Inc. only | Southmayd, North (Baker-Viola) | Grayson | 1 | 2.06K | 13.5K | Feb 2019 – Aug 2021 |
| Coates Energy Trust Gas Unit #1 G-4-178136 | Hughes, Dan A. Company, L.P. only | Jeffress (Vicksburg T) | Hidalgo | 1 | 2.04K | 549K | Jul 2000 – Dec 2005 |
| Alamo National Bank Trustee G-1-66892 | Virtex Operating Company, Inc. only | Green Branch (Wilcox 2-D) | McMullen | 1 | 2.04K | 675K | by Jan 1993 – Apr 2016 |
| Henderson Trust "BB" G-9-144816 | Red Stag Operating, LLC only | Ozona, NE. (Canyon Sand) | Crockett | 1 | 2.04K | 882K | Feb 1993 – Aug 2026 |
| Kincaid, A. R. Trust "B" G-9-19113 | Scout Energy Management LLC only | Ozona, NE. (Canyon Sand) | Crockett | 1 | 2.04K | 250K | by Jan 1993 – Aug 2026 |
| Snyder Mineral Trust G-8-79197 | Stovall, Howard only | Baird, NE. (Congl.) | Callahan | 1 | 2.04K | 55.9K | by Jan 1993 – May 2002 |
| Watson Trust GU G-5-156137 | Formation Resour Field Svcs, LLC only | Marsters, N.E. | Freestone | 1 | 2.03K | 638K | Sep 1995 – Jun 2005 |
| Smith, A. C. Trust G-14-129791 | Presidio Petroleum LLC only | Britt Ranch W. (Granite Wash a ) | Wheeler | 1 | 2.01K | 88.7K | by Jan 1993 – Mar 2010 |
| Longfellow G-10-169097 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 2K | 726K | Apr 1998 – Nov 2025 |
| Downie Ranch G-10-237163 | Longfellow Energy, LP only | Thistle (Overthrust) | Pecos | 1 | 2K | 100K | Oct 2007 – Dec 2016 |
| Black Trust 49 G-14-218836 | Unbridled Resources, LLC only | Frye Ranch (Consolidated) | Wheeler | 1 | 1.98K | 11.7K | Jul 2006 – Jan 2015 |
| Begert Trust 31 G-14-253460 | Bce-Mach II LLC only | Begert (10,200) | Hemphill | 1 | 1.98K | 296K | Apr 2009 – Aug 2026 |
| Bruni Mineral Trust "B" G-4-195183 | Hilcorp Energy Company only | Liz (9200) | Webb | 1 | 1.97K | 640K | Jun 2003 – Aug 2026 |
| Read Trust 'A' G-14-236969 | Presidio Petroleum LLC only | Hemphill (Douglas) | Hemphill | 1 | 1.96K | 426K | Feb 2008 – Feb 2020 |
| Downie Ranch G-10-150779 | Longfellow Energy, LP only | Thistle (Overthrust) | Pecos | 1 | 1.95K | 133K | May 1994 – Sep 2010 |
| Frost Trust G-4-154749 | Proline Energy Resources Inc only | Shockacon (Wilcox 6700) | Webb | 1 | 1.94K | 495K | May 1995 – Aug 2026 |
| West Ranch G-10-198345 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 1.93K | 2.22M | Oct 2003 – Apr 2024 |
| West Ranch G-10-172165 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 1.92K | 5.93M | Mar 1999 – Aug 2026 |
| Rust Estate 2 G-6-179366 | Brookston Energy, Inc. only | Oak Hill (Cotton Valley) | Rusk | 1 | 1.91K | 1.65M | Sep 2000 – Aug 2026 |
| West Ranch G-10-235810 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 1.9K | 2.08M | Oct 2007 – Jul 2026 |
| Boatmen Trust Co. GU #1 G-5-160265 | Anadarko Petroleum Corporation only | Teague (Travis Peak) | Freestone | 1 | 1.9K | 798K | Sep 1996 – Feb 2011 |