| West Ranch G-10-245683 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 331 | 53.1K | Mar 2008 – Dec 2012 |
| North Hayter Trust G-6-215257 | Wallace Operating Company LLC only | Douglass, W. (Travis Peak) | Nacogdoches | 1 | 328 | 376K | May 2005 – Feb 2019 |
| Blake Trust -1- G-14-122657 | Burk Royalty Co., Ltd. only | Texas Hugoton | Sherman | 1 | 326 | 1.19M | by Jan 1993 – Aug 2026 |
| Barton Trust G-14-183626 | Latigo Petroleum, LLC only | Lipscomb (Cleveland) | Lipscomb | 1 | 325 | 395K | May 2001 – Aug 2026 |
| Bruni Mineral Trust "A" G-4-137189 | Hilcorp Energy Company only | B.M.T. (Lobo Cons.) | Webb | 1 | 324 | 1.24M | by Jan 1993 – Aug 2026 |
| West Ranch 5 G-10-167273 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 324 | 997K | Jan 1998 – Apr 2022 |
| Longfellow G-10-249729 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 322 | 1.11M | Feb 2008 – Jul 2026 |
| West Ranch G-10-239302 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 322 | 357K | Dec 2007 – Feb 2025 |
| Hutchins-Peareson Trust G-3-140300 | Royal Oil & Gas Corp. only | Avo Grande (Yegua 6800) | Wharton | 1 | 321 | 23.3K | Mar 1993 – Jan 1994 |
| Allison G-10-273506 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 321 | 661K | Oct 2010 – Feb 2025 |
| Longfellow G-10-188448 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 320 | 855K | Apr 2002 – Mar 2026 |
| Hill-Fawcett, Randee Trust "A" G-9-211727 | Upp Operating, LLC only | Sawyer (Canyon) | Sutton | 1 | 320 | 307K | Apr 2005 – Jul 2026 |
| Lesley Trust G-13-218309 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Denton | 1 | 319 | 2.02M | Apr 2006 – Aug 2026 |
| Hill-Fawcett, Randee Trust C G-9-217515 | Upp Operating, LLC only | Sawyer (Canyon) | Sutton | 1 | 318 | 542K | Dec 2005 – Jul 2026 |
| Cole Trust "B" G-13-176837 | Bedrock Production, LLC only | Newark, East (Barnett Shale) | Denton | 1 | 317 | 1.65M | Apr 2000 – Jul 2020 |
| C-Bruni Mineral Trust G-4-75414 | Hilcorp Energy Company only | Laredo (Lobo) | Webb | 1 | 316 | 27.2K | by Jan 1993 – May 1993 |
| Allison G-10-198887 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 316 | 949K | Oct 2003 – Jul 2026 |
| Watson Trust GU G-5-226901 | Atlas Operating LLC only | Marsters, N.E. | Freestone | 1 | 315 | 535K | Jul 2006 – Jun 2026 |
| Benavides Mineral Trust G-4-221640 | GGP Exploration, Ltd. only | Lopeno, NE (A-3) | Zapata | 1 | 314 | 102K | Nov 2006 – Jul 2009 |
| West Ranch G-10-242400 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 314 | 368K | Sep 2008 – Jul 2026 |
| Allison G-10-182400 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 314 | 3.34M | Feb 2001 – Feb 2024 |
| West Ranch G-10-251517 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 313 | 1.39M | May 2009 – Jan 2025 |
| West Ranch G-10-248488 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 312 | 1.05M | Jan 2009 – Apr 2024 |
| Tyler Trust South G-13-229358 | Devon Energy Production Co, L.P. only | Newark, East (Barnett Shale) | Parker | 1 | 311 | 87.3K | Apr 2007 – Oct 2009 |
| West Ranch G-10-253825 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 305 | 2.12M | Jan 2009 – Apr 2024 |
| Cole Trust Two G-13-177071 | BKV Barnett II, LLC only | Newark, East (Barnett Shale) | Denton | 1 | 305 | 817K | May 2000 – May 2020 |
| Rust Estate G-3-239700 | Cico Oil & Gas Company only | Hungerford, S. (Cook Mountain) | Wharton | 1 | 305 | 10K | Apr 2008 – May 2008 |
| West Ranch G-10-198879 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 301 | 771K | Oct 2003 – Jul 2026 |
| Southland Paper Company G-6-120748 | Long Trusts, The only | Carthage, SW. (Travis Peak) | Panola | 1 | 300 | 330 | Dec 2014 – Dec 2014 |
| VT James Trust 1355 G-4-202014 | Lewis Petro Properties, Inc. only | Tom Walsh (Olmos) | Webb | 1 | 299 | 206K | May 2004 – Aug 2026 |
| Longfellow G-10-237926 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 299 | 1.68M | Nov 2007 – Jul 2026 |
| Stovall Trust A483 G-2-232309 | Hunt Oil Company only | Benbow (Lower Wilcox A) | Lavaca | 1 | 298 | 97.4K | Jul 2007 – May 2008 |
| West Ranch G-10-229623 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 298 | 1.78M | Mar 2007 – Apr 2024 |
| Bruni Mineral Trust "A" G-4-224027 | Hilcorp Energy Company only | B.M.T. (Lobo Cons.) | Webb | 1 | 295 | 691K | Nov 2006 – Aug 2026 |
| West Ranch G-10-251612 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 295 | 4.54M | Nov 2008 – Mar 2024 |
| Guaranty Title & Trust G-4-164738 | Royal Production Company, Inc. only | Corpus Christi, W. ( 9100 Frio) | Nueces | 1 | 294 | 18.8K | Jul 1997 – Nov 1997 |
| West Ranch G-10-252480 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 293 | 712K | Feb 2009 – Jan 2026 |
| Frost National Bank Trustee G-1-134399 | San Antonio Gas & Oil, Inc. only | Dent Ingram (Olmos 1) | Dimmit | 1 | 293 | 16.3K | by Jan 1993 – Mar 1997 |
| Mills Mineral Trust G-1-63679 | Perdido Energy, LLC only | Will O. (Ellenburger) | Val Verde | 1 | 292 | 999K | by Jan 1993 – Jan 2024 |
| Jackson Trust Unit G-6-255084 | Enerquest Corporation only | Trawick,n (Travis Peak) | Nacogdoches | 1 | 291 | 75K | Oct 2009 – Jul 2014 |
| Allison G-10-210269 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 291 | 727K | Jun 2005 – Jan 2026 |
| West Ranch G-10-239293 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 290 | 49.6K | Feb 2008 – Jul 2026 |
| West Ranch G-10-215435 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 289 | 306K | Aug 2005 – Apr 2024 |
| Buckler Trust "233" Unit G-8-143285 | Ashtola Exploration Company,inc. only | Florence (Caddo) | Throckmorton | 1 | 287 | 3.53K | by Jan 1993 – Mar 1993 |
| Longfellow G-10-170418 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 286 | 347K | Aug 1998 – Aug 2026 |
| Allison G-10-239362 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 286 | 1.86M | Dec 2007 – Jan 2026 |
| West State G-10-235791 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 285 | 5.56M | Aug 2007 – Sep 2025 |
| Kincaid, A. R. Trust 'C' G-9-290494 | Scout Energy Management LLC only | Ozona (Canyon Sand, Oil) | Crockett | 1 | 284 | 13.9K | Feb 2021 – Aug 2026 |
| West Ranch G-10-252705 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 284 | 286K | Jun 2008 – Aug 2026 |
| Realty Trust G-10-63542 | Incline Energy only | Pecos Valley (Wolfcamp) | Pecos | 1 | 284 | 137K | by Jan 1993 – Nov 2002 |