| 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 |
| Sieber Trust 25 O-10-51141 | Noble Energy Inc only | Phantom (Wolfcamp) | Reeves | 2 | 1.15K | 1.43K | Feb 2019 – Oct 2021 |
| Parker Trust II O-10-29619 | Mayo, Eddie only | Buchanan's Ranch (Ellenburger) | Ector | 1 | 1.15K | 1.95K | by Jan 1993 – Dec 1993 |
| 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 |
| Walker-Buckler Trust/TR 40A/SWD O-8-9385 | Beehive Operating, LLC only | Fort Griffin, E. (Miss) | Shackelford | 3 | 1.14K | 1.55K | by Jan 1993 – Aug 1993 |
| 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 |
| Brown Ranch O-8-15858 | West,gordon T.jr. & Rugeley,stan only | Rust Creek (Miss) | Throckmorton | 1 | 1.12K | 19.7K | by Jan 1993 – Mar 2006 |
| 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 |
| Watson Camp Trust "A" O-1-13176 | U. D. Man, Inc. only | Somerset | Atascosa | 1 | 1.11K | 21 | by Jan 1993 – Sep 1998 |
| 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 |
| Share Trust "54" G-14-249702 | Mewbourne Oil Company only | Smith Perryton (Morrow-Miss.) | Ochiltree | 1 | 1.1K | 358K | Mar 2009 – Aug 2026 |
| North Hayter Trust G-6-200237 | Texian Operating Company, LLC only | Douglass, W. (Travis Peak) | Nacogdoches | 1 | 1.1K | 1.61M | Jan 2004 – Aug 2026 |
| West State G-10-203340 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 1.09K | 1.34M | Apr 2004 – Jul 2026 |
| Lutheran Church GU G-6-238355 | Long Trusts, The only | Beckville (Cotton Valley) | Panola | 1 | 1.08K | 715K | Mar 2008 – Jul 2026 |
| Longfellow G-10-207716 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 1.08K | 21.7K | Nov 2004 – May 2026 |
| Pshigoda, Christ, Trustee G-14-21952 | Sandlot Oil & Gas LLC only | Pan Petro (Cleveland) | Ochiltree | 1 | 1.08K | 93.3K | by Jan 1993 – May 2024 |
| West Ranch G-10-239348 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 1.08K | 300K | Mar 2008 – Jul 2026 |
| Bruni Mineral Trust 'A' G-4-178900 | Hilcorp Energy Company only | Cerrito Creek (Lobo 1) | Webb | 1 | 1.07K | 673K | Sep 2000 – Jun 2026 |
| McFaddin Mineral Trust G-6-246463 | Merit Energy Company only | Angie (James Lime) | San Augustine | 1 | 1.07K | 1.39M | Nov 2008 – Aug 2026 |
| Jernigan, Sedalia G-6-108947 | Long Trusts, The only | Oak Hill (Cotton Valley) | Rusk | 1 | 1.06K | 420K | by Jan 1993 – Jul 2026 |
| Wm James Trust G-4-86971 | Lewis Petro Properties, Inc. only | Tom Walsh (Olmos) | Webb | 1 | 1.06K | 382K | by Jan 1993 – Aug 2026 |
| Carruth, E.B. Jr. Trust, et Al G-4-150853 | Orphan Wells, LLC only | Boyle, West (3400 Sand) | Starr | 1 | 1.06K | 161K | Jun 1994 – May 2011 |
| Benavides Trust G-4-201375 | Merit Energy Company only | Los Mogotes (Wilcox Cons.) | Zapata | 1 | 1.06K | 327K | Feb 2004 – Aug 2026 |
| West Ranch G-10-239463 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 1.05K | 1.12M | Apr 2008 – Aug 2026 |
| Frost Trust 45 G-4-178082 | EOG Resources, Inc. only | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 1.05K | 168K | Jul 2000 – Aug 2012 |
| Watkins Scholarship Trust G-6-234700 | Sabine Oil & Gas Corporation only | Minden (Cotton Valley Cons.) | Rusk | 1 | 1.04K | 182K | Oct 2007 – Dec 2018 |
| University 10 A O-10-27613 | Aaa Oil Trust only | Cardinal (Queen, W. ) | Pecos | 2 | 1.04K | 5.96K | by Jan 1993 – Aug 2007 |
| Broussard Trust G-3-187608 | Milestone Operating, Inc. only | Lovells Lake (Marg. 7500) | Jefferson | 1 | 1.03K | 183K | Feb 2002 – May 2010 |
| Bruni Mineral Trust "A" G-4-80566 | Hilcorp Energy Company only | Juanita (Lobo) | Webb | 1 | 1.03K | 561K | by Jan 1993 – Jan 2015 |
| West Ranch G-10-147873 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 1.03K | 2.64M | Nov 1993 – Apr 2024 |
| Hinojosa, et Al G-4-132290 | Coates Energy Trust only | El Staggs (4100) | Hidalgo | 1 | 1.03K | 9.64K | by Jan 1993 – Mar 1994 |
| Wm James Trust G-4-217037 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 1.03K | 630K | Jan 2006 – Jun 2026 |
| King Trust "A" G-14-255943 | Unit Petroleum Company only | Hemphill (Granite Wash.) | Hemphill | 1 | 1.02K | 68.2K | Apr 2010 – Sep 2017 |
| West Ranch G-10-199613 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 1.01K | 3.01M | Nov 2003 – Apr 2024 |
| Waller, C. J. Trust G-3-270956 | Aspect Energy, LLC only | Iowa Colony (9050 Vicksburg) | Brazoria | 1 | 1.01K | 21.1K | Jun 2013 – Aug 2018 |
| Landers, C. C. (1844) O-7-6313 | Aaa Oil Trust only | East Texas | Upshur | 1 | 1.01K | 17 | by Jan 1993 – Oct 1994 |
| Cullen Trust G-2-264269 | Republic Resources, LLC. only | Sartwelle, W. (Wilcox 2) | Lavaca | 1 | 1.01K | 74K | Jul 2011 – Jul 2013 |
| Frost National Bank Trustee G-2-100239 | Atkinson, Clifford III only | Ray Point, West | Live Oak | 1 | 1.01K | 128K | by Jan 1993 – Mar 1995 |
| Bruni Mineral Trust "A" G-4-93755 | Hilcorp Energy Company only | Juanita (Lobo) | Webb | 1 | 1.01K | 242K | Mar 1993 – Jul 2023 |
| Longfellow G-10-192532 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 1.01K | 2.19M | Sep 2002 – Dec 2023 |
| Bailey, James Trustee G-3-156345 | Shana Petroleum Company only | Paul (LW-17) | Colorado | 1 | 1.01K | 29.4K | Aug 1995 – Oct 1995 |