| West Ranch 5 G-10-173864 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 672 | 8.72M | Jul 1999 – Dec 2023 |
| Hubberd Trust G-4-224997 | Hilcorp Energy Company only | Hubberd (Lobo) | Webb | 1 | 670 | 945K | Jan 2006 – Aug 2026 |
| Bruni Mineral Trust G-4-113168 | Hilcorp Energy Company only | Laredo (Lobo) | Webb | 1 | 668 | 474K | by Jan 1993 – Aug 2026 |
| West Ranch G-10-249744 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 667 | 1.5M | Apr 2008 – Jul 2026 |
| Jones Trust -25- G-14-126497 | Unbridled Resources, LLC only | Canadian, SE (Douglas) | Hemphill | 1 | 665 | 192K | by Jan 1993 – Sep 2019 |
| Wm James Trust G-4-98532 | Lewis Petro Properties, Inc. only | Tom Walsh (Olmos) | Webb | 1 | 663 | 157K | by Jan 1993 – Aug 2026 |
| Bailey, James Trustee G-3-156897 | Shana Petroleum Company only | Paul (LW-11) | Colorado | 1 | 662 | 31.1K | Nov 1995 – Apr 1996 |
| Thomas Trust G-3-244799 | Wagner Oil Company only | Lissie, W. (Wilcox Upper) | Colorado | 1 | 662 | 35.2K | Mar 2009 – Sep 2013 |
| First National Trust-Courson 571 G-14-226825 | Highmark Energy Operating, LLC only | Pan Petro (Cleveland) | Ochiltree | 1 | 658 | 287K | Jan 2007 – Aug 2026 |
| Longfellow State "D" G-10-244113 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 656 | 1.45M | Jun 2008 – Mar 2024 |
| Benavides Trust G-4-196957 | Merit Energy Company only | Hundido (Lobo) | Zapata | 1 | 655 | 4.42M | Sep 2003 – Apr 2025 |
| Wm James Trust G-4-208786 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 654 | 379K | Apr 2005 – Feb 2023 |
| North Hayter Trust G-6-215263 | Texian Operating Company, LLC only | Douglass, W. (Travis Peak) | Nacogdoches | 1 | 654 | 646K | Jul 2005 – Jan 2025 |
| Trust McCoy "B" G-8-174558 | Van Operating, Ltd. only | Hughes - Odell, SW (Congl) | Throckmorton | 1 | 651 | 10K | Nov 1999 – Dec 1999 |
| Johnson Trust Unit G-4-223630 | Dewbre Petroleum Corporation only | Ricardo, North (10,200) | Kleberg | 1 | 650 | 7.7K | Nov 2006 – Aug 2014 |
| Broussard Trust G-3-167436 | Milestone Operating, Inc. only | Lovells Lake (Marg. 7500) | Jefferson | 1 | 648 | 182K | Nov 1997 – Feb 2026 |
| North Hayter Trust G-6-207776 | Texian Operating Company, LLC only | Douglass, W. (Travis Peak) | Nacogdoches | 1 | 648 | 1.09M | Jan 2005 – Aug 2026 |
| McLean, Marrs, Trust -A- G-4-14629 | Columbus Energy, LLC only | Thompsonville, NE (Wilcox 9500) | Jim Hogg | 1 | 647 | 4.4M | by Jan 1993 – Aug 2026 |
| West Ranch G-10-253230 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 644 | 170K | Jun 2009 – Jul 2026 |
| Haynes Mineral Trust G-4-139158 | Hilcorp Energy Company only | Haynes (Middle Wilcox Cons.) | Zapata | 1 | 638 | 1.54M | by Jan 1993 – Aug 2011 |
| West Ranch G-10-246149 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 638 | 628K | Nov 2008 – Aug 2026 |
| West Ranch G-10-274332 | Sandridge Expl. and Prod., LLC only | Pinon (Overthrust) | Pecos | 1 | 637 | 2.75K | Oct 2012 – Oct 2014 |
| West Ranch G-10-259454 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 629 | 29.5K | Sep 2010 – Sep 2023 |
| Eubanks Trust G-5-158593 | Diversified Production LLC only | Teague (CV-Bossier Cons.) | Freestone | 1 | 626 | 1.56M | Mar 1996 – Aug 2026 |
| West Ranch G-10-204037 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 623 | 2.27M | Jul 2004 – Mar 2024 |
| C-Bruni Mineral Trust G-4-69975 | Hilcorp Energy Company only | Laredo (Lobo) | Webb | 1 | 623 | 225K | by Jan 1993 – Aug 2026 |
| Walker-Buckler Trust Tr. 21 G-8-55910 | Keating Energy, Inc. only | Shackelford Ne(miss) | Shackelford | 1 | 623 | 187K | by Jan 1993 – Nov 2025 |
| Watson Trust GU G-5-219279 | Formation Resour Field Svcs, LLC only | Stewards Mill, NE. (Rodessa) | Freestone | 1 | 616 | 112K | Jun 2005 – Dec 2023 |
| Henderson Trust "EE" G-9-144666 | Red Stag Operating, LLC only | Ozona, SW. (Strawn) | Crockett | 1 | 614 | 364K | Feb 1993 – Oct 1994 |
| West Ranch G-10-224601 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 612 | 665K | Aug 2006 – Mar 2024 |
| Boston Texas Land Trust # 10 G-4-157569 | Legacy Corporation, The only | Amore (Vicksburg 5950) | Starr | 1 | 603 | 88.5K | Dec 1995 – Nov 1996 |
| Bruni Mineral Trust "B" G-4-130740 | Chevron U. S. A. Inc. only | La Perla (Lobo Cons.) | Webb | 1 | 603 | 503K | by Jan 1993 – Feb 2006 |
| West Ranch G-10-251350 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 602 | 1.12M | Oct 2008 – Mar 2022 |
| Bruni Mineral Trust 'A' G-4-141742 | Hilcorp Energy Company only | Cerrito Creek (Lobo) | Webb | 1 | 601 | 1.77M | by Jan 1993 – Aug 2026 |
| West Ranch G-10-234813 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 598 | 3.1M | Sep 2007 – Jul 2026 |
| Los Ojuelos Mineral Trust G-4-241562 | Evans, S. Lavon Jr. Oper. Co. only | Pancho (Wilcox) | Webb | 1 | 595 | 102K | Jun 2007 – Feb 2009 |
| West Ranch G-10-251101 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 592 | 253K | Oct 2008 – Aug 2026 |
| Mitchell-State 10 G-9-154808 | BRP Energy, LLC only | Pakenham (Thrusted) | Terrell | 1 | 592 | 130K | Jun 1995 – Jul 2024 |
| USA Trust G-13-251980 | XTO Energy Inc. only | Newark, East (Barnett Shale) | Denton | 1 | 591 | 27.5K | May 2009 – May 2009 |
| Bruni Mineral Trust G-4-80432 | Chevron U. S. A. Inc. only | Laredo (Lobo) | Webb | 1 | 588 | 72.5K | by Jan 1993 – Sep 1998 |
| Trust "558" G-8-152310 | Van Operating, Ltd. only | Hillview (Caddo) | Shackelford | 1 | 587 | 56.7K | Nov 1994 – Jan 1998 |
| Longfellow G-10-170848 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 586 | 7.34M | Sep 1998 – Apr 2024 |
| West Ranch G-10-240176 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 585 | 1.22M | Dec 2007 – Aug 2026 |
| West Ranch G-10-217786 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 582 | 771K | May 2006 – Aug 2026 |
| Henderson Trust "OO" G-9-152141 | Red Stag Operating, LLC only | Ozona (Canyon Sand) | Crockett | 1 | 581 | 466K | Nov 1994 – Aug 2026 |
| Rust, Arnold Unit 2 G-6-104316 | Brookston Energy, Inc. only | Oak Hill (Cotton Valley) | Rusk | 1 | 580 | 546K | by Jan 1993 – Aug 2026 |
| West Ranch G-10-194416 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 571 | 5.27M | Apr 2003 – Aug 2026 |
| Benavides Trust G-4-197724 | Merit Energy Company only | Hundido (Lobo) | Zapata | 1 | 568 | 872K | Oct 2003 – Aug 2026 |
| McCord Trust B G-2-255113 | Spiller Operating Co., Inc. only | Dallas Husky (Cook Mtn.) | Goliad | 1 | 563 | 127K | Feb 2010 – May 2012 |
| West Ranch G-10-249731 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 563 | 2.44M | Feb 2008 – Jun 2025 |