| Cole Trust Two G-13-175148 | Encana Oil & Gas(usa) Inc. only | Newark, East (Barnett Shale) | Denton | 1 | 385 | 322K | Oct 1999 – Sep 2007 |
| Henderson Trust "NN" G-9-144199 | Red Stag Operating, LLC only | Ozona, SW. (Strawn) | Crockett | 1 | 383 | 14.2K | by Jan 1993 – Mar 1996 |
| Jones Bryan Trust G-14-104498 | Myriad Resources Corporation only | Coburn Lower (Lower Morrow) | Lipscomb | 1 | 382 | 693K | by Jan 1993 – Apr 1999 |
| Allison, Jack 1102 O-10-33530 | Occidental W TX Overthrust, Inc. only | Allison Ranch (Wolfcamp) | Pecos | 4 | 381 | 13 | by Jan 1993 – Aug 2016 |
| North Hayter Trust G-6-247956 | Texian Operating Company, LLC only | Douglass, W. (Travis Peak) | Nacogdoches | 1 | 380 | 693K | May 2009 – Nov 2025 |
| North Hayter Trust G-6-219163 | Texian Operating Company, LLC only | Douglass, W. (Travis Peak) | Nacogdoches | 1 | 378 | 516K | Feb 2006 – Jun 2026 |
| Haynes Mineral Trust G-4-209816 | Hilcorp Energy Company only | Haynes (Middle Wilcox Cons.) | Zapata | 1 | 378 | 2.59M | Apr 2005 – Aug 2026 |
| Amando Garza Trust G-4-230801 | Hilcorp Energy Company only | Charco (9900) | Zapata | 1 | 378 | 3.56M | Aug 2007 – Aug 2026 |
| Gary, M.E. Trustee O-1-6680 | Hardwick, Ross H. Oil Company only | Fairfield | Bexar | 5 | 376 | 19 | by Jan 1993 – Feb 1995 |
| Bruni Mineral Trust G-4-125560 | Hilcorp Energy Company only | Laredo (Lobo) | Webb | 1 | 376 | 225K | by Jan 1993 – Aug 2026 |
| Baker Trust G-2-155083 | Rutherford Oil Corporation only | Brazil (1ST Tom Lyne) | McMullen | 1 | 373 | 962K | Jul 1995 – May 1998 |
| Flowers Trust -B- G-14-39911 | Crescendo Resources, L.P. only | Mendota, NW. (Morrow, Upper) | Roberts | 1 | 373 | 305K | by Jan 1993 – Feb 1999 |
| Longfellow State "B" G-10-236245 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 371 | 247K | Nov 2007 – Feb 2025 |
| Barton Trust G-14-214483 | Complete Oil & Gas Services, LLC only | Lipscomb (Cleveland) | Lipscomb | 1 | 368 | 214K | Jan 2006 – Mar 2018 |
| Boston Texas Land Trust G-4-144536 | Merit Energy Company only | Javelina, W. (5200) | Starr | 1 | 366 | 98.7K | Feb 1993 – Aug 1995 |
| Longfellow 600 G-10-249734 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 365 | 184K | Mar 2008 – Jul 2026 |
| West Ranch G-10-255243 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 365 | 954K | Jul 2009 – Aug 2026 |
| West Ranch G-10-259531 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 364 | 98.4K | Jun 2010 – Jun 2025 |
| West Ranch G-10-237990 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 364 | 1.41M | Jan 2008 – Sep 2025 |
| Hubberd Trust G-4-155553 | Conoco Inc. only | Liz (9200) | Webb | 1 | 362 | 43.7K | Sep 1995 – Jun 1997 |
| Snyder Mineral Trust O-8-30088 | Revard Petroleum, L.L.C. only | Lundschen (Lower Lake Sand) | Callahan | 1 | 361 | 6.58K | Feb 2008 – Jan 2012 |
| West Ranch G-10-220038 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 360 | 1.2M | Jun 2006 – Jul 2026 |
| West Ranch G-10-249732 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 359 | 1.2M | Feb 2008 – Dec 2025 |
| Longfellow G-10-259465 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 358 | 852K | Sep 2010 – Aug 2026 |
| Marrs McLean Trust -A- G-4-211212 | Columbus Energy, LLC only | Thompsonville, NE. (12500) | Jim Hogg | 1 | 357 | 1.64M | Jun 2005 – Dec 2017 |
| Allison G-10-239307 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 357 | 65.5K | Apr 2008 – Jun 2025 |
| Lyne Trust O-2-8358 | Edge Petroleum Oper. Co., Inc. only | Max, W. (Hockley 4300) | Live Oak | 1 | 355 | 578 | Nov 1997 – Nov 1997 |
| West Ranch G-10-237941 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 355 | 673K | Feb 2008 – Feb 2026 |
| West Ranch G-10-259471 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 354 | 1.47M | Nov 2010 – Apr 2025 |
| Trust, James "951" G-4-127593 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 354 | 313K | by Jan 1993 – Aug 2026 |
| Cole, M. T. Trust G-13-57715 | 4M Oil & Gas, LLC only | Gas Finders (Congl.) | Denton | 1 | 351 | 366K | by Jan 1993 – Aug 2026 |
| Guerra Trust G-4-248790 | Dewbre Petroleum Corporation only | Santellana, South (Frio, Vksbg) | Hidalgo | 1 | 349 | 599K | Apr 2009 – Jul 2018 |
| Henderson Trust "DD" G-9-145360 | Red Stag Operating, LLC only | Ozona (Canyon Sand) | Crockett | 1 | 349 | 219K | Mar 1993 – Aug 2026 |
| Marrs McLean Trust -A- G-4-171363 | Columbus Energy, LLC only | Thompsonville, NE. (12500) | Jim Hogg | 1 | 348 | 7.91M | Sep 1998 – Aug 2026 |
| West Ranch G-10-234608 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 347 | 2.1M | Oct 2007 – Aug 2026 |
| Jonisue A O-8-12757 | Foree, R. L. Trust "A" only | Jonisue Bowden (Canyon) | Fisher | 1 | 347 | 11.5K | by Jan 1993 – Mar 1994 |
| Carlson Trust G-14-86212 | Presidio Petroleum LLC only | Share, SE. (Morrow, Lower) | Ochiltree | 1 | 344 | 451K | by Jan 1993 – Aug 2019 |
| Henderson Trust D G-9-104359 | Apache Corporation only | Howards Creek (Penn.) | Crockett | 1 | 344 | 641K | by Jan 1993 – Feb 2007 |
| University 11A O-10-26724 | Aaa Oil Trust only | Cardinal (Queen, W. ) | Pecos | 1 | 342 | 2.81K | Dec 1995 – Oct 2008 |
| James Trust G-4-217038 | White Marlin Operating Co, LLC only | Owen (Olmos) | Webb | 1 | 341 | 188K | Feb 2006 – Jul 2014 |
| Frost Trust 9 G-4-185363 | Hilcorp Energy Company only | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 340 | 138K | Sep 2001 – Oct 2008 |
| Longfellow G-10-219777 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 340 | 899K | May 2006 – Jun 2025 |
| Trust McCoy "B" O-8-28766 | Van Operating, Ltd. only | Hughes - Odell, SW (Congl) | Throckmorton | 1 | 339 | 586 | Jan 2000 – Jul 2000 |
| Sabine Trust G-4-152600 | Amerril Energy LLC only | Flour Bluff (Massives) | Nueces | 1 | 339 | 132K | Sep 1994 – Jan 1997 |
| Wardner Trustee O-4-6442 | Poor Boy Oilfield Service only | El Tanque, N. (Frio 1880) | Starr | 1 | 338 | 36 | by Jan 1993 – May 1996 |
| West Ranch G-10-197593 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 336 | 400K | Aug 2003 – May 2025 |
| West Ranch G-10-234903 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 335 | 4.62M | Sep 2007 – Mar 2024 |
| Longfellow G-10-192531 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 334 | 1.13M | Sep 2002 – Aug 2026 |
| North Hayter Trust G-6-216145 | Texian Operating Company, LLC only | Douglass, W. (Travis Peak) | Nacogdoches | 1 | 333 | 599K | Sep 2005 – Jan 2025 |
| Citizens Natl. Bank Trustee -G- O-14-2987 | Apache Corporation only | C.N.B. (Morrow, Lo.) | Lipscomb | 3 | 333 | 24.8K | Nov 1998 – Apr 1999 |