| West Ranch G-10-243262 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 4 | 160K | Jun 2008 – Feb 2024 |
| Hein Trust G-4-183469 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Webb | 1 | 4 | 2.08M | May 2001 – Aug 2026 |
| West Ranch South G-10-248370 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 4 | 1.09M | Oct 2008 – Apr 2024 |
| Haynes Mineral Trust G-4-229696 | Hilcorp Energy Company only | Haynes (Middle Wilcox Cons.) | Zapata | 1 | 4 | 471K | Jul 2007 – Aug 2026 |
| Young Trust Unit G-14-158337 | Unit Petroleum Company only | Allison Parks (Morrow, Up.) | Hemphill | 1 | 3 | 330K | Mar 1996 – Apr 2003 |
| Longfellow Fee 2 G-10-252706 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 3 | 44.9K | Oct 2008 – Mar 2026 |
| Hein Trust C G-4-177977 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Webb | 1 | 3 | 358K | Jun 2000 – May 2026 |
| Hart Trust G-14-172406 | Aruba Petroleum, Inc. only | Gruver, N. (Marmaton) | Hansford | 1 | 3 | 6.54K | Mar 1999 – Mar 2002 |
| Hill-Randee Fawcett Trust "K" G-9-197515 | Upp Operating, LLC only | Sawyer (Canyon) | Sutton | 1 | 3 | 102K | Dec 2002 – Jul 2026 |
| Hein Trust G-4-191861 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Webb | 1 | 3 | 893K | Oct 2002 – Aug 2026 |
| Bruni Mineral Trust A-A G-4-142469 | Arete Operating Company II, LLC only | La Perla (Lobo Cons.) | Zapata | 1 | 3 | 1.27M | by Jan 1993 – Aug 2026 |
| Hein Trust C G-4-178479 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Webb | 1 | 3 | 702K | Aug 2000 – Jul 2026 |
| Hein Trust G-4-195270 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Webb | 1 | 3 | 1.13M | May 2003 – Aug 2026 |
| West Ranch G-10-245696 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 3 | 66.7K | Nov 2008 – Mar 2024 |
| Kasal Trust Unit G-13-246134 | BKV North Texas, LLC only | Newark, East (Barnett Shale) | Johnson | 1 | 3 | 1.36M | May 2008 – Aug 2026 |
| Rust Estate G-3-184616 | Mountain V Texas, LLC only | Ciervo Grande (Middle Wilcox) | Wharton | 1 | 3 | 557K | Jul 2001 – Jun 2026 |
| West Ranch G-10-259456 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 3 | 258K | Mar 2010 – Apr 2024 |
| West Ranch G-10-259588 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 3 | 274K | Jun 2010 – Mar 2024 |
| Rust Estate 1 G-6-98172 | Brookston Energy, Inc. only | Oak Hill (Cotton Valley) | Rusk | 1 | 3 | 1.17M | by Jan 1993 – Aug 2026 |
| West Ranch G-10-251076 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 3 | 123K | Feb 2009 – Jul 2026 |
| Longfellow XX G-10-182632 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 3 | 73.4K | Jul 2001 – Apr 2024 |
| West Ranch G-10-249997 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 3 | 911K | Jan 2009 – Apr 2024 |
| Cole Trust "A" G-13-206919 | Bedrock Production, LLC only | Monteath (Atoka, Upper) | Denton | 1 | 3 | 505K | Nov 2004 – Aug 2020 |
| Neel, Bess G-4-168061 | Hunt, Wm. Herbert, Trust Est. only | Los Mogotes (Lobo 6) | Zapata | 1 | 3 | 127K | Jan 1998 – Aug 1998 |
| Halamicek, J. A. Trust G-3-146101 | Conoco Inc. only | Alwan (Frio 4360) | Wharton | 1 | 3 | 143K | Jun 1993 – Dec 1993 |
| Frost National Bank & Trust G-4-95442 | Bowman, Fred Inc. only | Rancho Solo (Wilcox) | Duval | 1 | 3 | 2.24K | by Jan 1993 – Jan 1993 |
| Hein Trust B G-4-185482 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Webb | 1 | 3 | 1.27M | Sep 2001 – Aug 2026 |
| Fawcett, Randee Trust -C- G-9-66800 | Upp Operating, LLC only | Sawyer (Canyon) | Sutton | 1 | 3 | 85K | by Jan 1993 – Jul 2026 |
| Hill-Aldwell, Winnie R. Trust E G-9-151198 | Upp Operating, LLC only | Sawyer (Canyon) | Sutton | 1 | 3 | 355K | May 1994 – Jul 2026 |
| Beasely, Jake Trust Operat. Area G-9-68674 | Upp Operating, LLC only | Whitehead (Strawn) | Crockett | 1 | 3 | 623K | by Jan 1993 – Jul 2026 |
| Haynes Mineral Trust G-4-254608 | Hilcorp Energy Company only | Haynes (Middle Wilcox Cons.) | Zapata | 1 | 3 | 411K | Jan 2010 – Aug 2026 |
| West Ranch G-10-226697 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 3 | 385K | Nov 2006 – Apr 2024 |
| Allison G-10-259070 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 3 | 271K | Jun 2010 – Sep 2023 |
| Hill Aldwell, Winnie R. Trust G G-9-151451 | Upp Operating, LLC only | Sawyer (Canyon) | Sutton | 1 | 2 | 1.77M | Mar 1994 – Jul 2026 |
| Longfellow State 2 G-10-183908 | Occidental W TX Overthrust, Inc. only | Pinon (Overthrust) | Pecos | 1 | 2 | 175K | Jul 2001 – May 2019 |
| West Ranch G-10-239372 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 2 | 83K | Apr 2008 – Jan 2026 |
| Kasal Trust Unit G-13-231343 | BKV North Texas, LLC only | Newark, East (Barnett Shale) | Johnson | 1 | 2 | 2.65M | May 2007 – Aug 2026 |
| Allison Ranch G-10-259480 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 2 | 216K | Oct 2010 – Apr 2024 |
| Bego Trust Gas Unit 1 G-2-245945 | Enduring Resources, LLC only | Kawitt (Edwards) | Karnes | 1 | 2 | 6.21K | Sep 2008 – Mar 2009 |
| Rowan Estate Trust G-13-174125 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Wise | 1 | 2 | 2.17M | Jul 1999 – Aug 2026 |
| Boggess Trust G-13-241119 | BKV Barnett II, LLC only | Newark, East (Barnett Shale) | Tarrant | 1 | 2 | 3.67M | Aug 2008 – Aug 2026 |
| West Ranch G-10-251351 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 2 | 376K | Oct 2008 – Apr 2024 |
| Haynes Mineral Trust G-4-126243 | Hilcorp Energy Company only | Haynes (Middle Wilcox Cons.) | Zapata | 1 | 2 | 151K | by Jan 1993 – Mar 1995 |
| Bruni Mineral Trust A-B G-4-134065 | Arete Operating Company, LLC only | La Perla (Lobo Cons.) | Zapata | 1 | 2 | 2.41M | by Jan 1993 – Feb 2026 |
| Haynes Mineral Trust G-4-228710 | Hilcorp Energy Company only | Munoz (Lobo) | Zapata | 1 | 2 | 323K | Jun 2007 – May 2026 |
| West Ranch South G-10-252748 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 2 | 263K | Jul 2009 – Apr 2024 |
| West Ranch G-10-248289 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 2 | 417K | Oct 2008 – Apr 2024 |
| Riley Trust G-5-165226 | Diversified Production LLC only | Bohlwhite (Cotton Valley Lime) | Robertson | 1 | 2 | 2.87M | Feb 1997 – Jan 2017 |
| Aldwell, Winnie R. Trust -C- G-9-65875 | Upp Operating, LLC only | Sawyer (Canyon) | Sutton | 1 | 2 | 476K | by Jan 1993 – Jul 2026 |
| Henderson Trust NN G-9-153691 | Red Stag Operating, LLC only | Ozona, SW. (Strawn) | Crockett | 1 | 2 | 16.8K | Mar 1995 – Jul 2014 |