| Royall Trust Unit O-6-15204 | Craton Operating LLC only | Blackfoot Field | Anderson | 1 | 28.1K | 0 | May 2013 – Aug 2026 |
| Zively Trustee O-3-24775 | Maverick Prod. Co., Inc. only | Blue Ridge | Fort Bend | 2 | 27.7K | 22 | Oct 2005 – Oct 2011 |
| Texaco-Slator -22- O-10-31158 | Rust Oil Corp. only | Goldsmith (5600) | Ector | 2 | 27.5K | 23.9K | by Jan 1993 – Oct 2006 |
| McNutt, W. L. O-6-3075 | Long Trusts, The only | McNutt (Pettit) | Smith | 1 | 27K | 21 | by Jan 1993 – Oct 2018 |
| Fite, W. P. Unit O-6-11004 | Long Trusts, The only | Henderson South (Travis Peak -B- | Rusk | 1 | 26.6K | 106K | by Jan 1993 – Mar 2006 |
| White Creek Unit O-2-1950 | Richard C. Bellows Family Trust only | White Creek | Live Oak | 1 | 26.5K | 39 | by Jan 1993 – Apr 2022 |
| Rust-Houdek Unit O-3-15103 | Wildfire Energy Operating LLC only | Giddings (Austin Chalk-3) | Burleson | 2 | 26.5K | 373K | by Jan 1993 – Mar 2019 |
| Midland National Bank Trustee O-10-35034 | Manti Tarka Permian OP, LLC only | War-Wink, S. (Wolfcamp) | Ward | 1 | 26.2K | 29.1K | Jun 1996 – May 2015 |
| Trust, C. E. O-13-29456 | Ferguson, S. M. Jr., Inc. only | Searcys (Miss) | Hardeman | 1 | 26.1K | 0 | Feb 1998 – Sep 2006 |
| Bauer Trust O-3-27219 | S & S Operating Company, Inc. only | Bauer Ranch (Nodosaria 2ND) | Jefferson | 1 | 26.1K | 79.5K | Jan 2016 – Jul 2026 |
| Barcus O-13-28079 | Bayer, Frances E. Rev Liv Trust only | Barcus (Strawn) | Cooke | 2 | 25.7K | 22 | by Jan 1993 – Jan 2016 |
| Alexander Trust "7" O-8-16478 | Clear Fork, Incorporated only | Alexander (Canyon Lower) | Stonewall | 2 | 25.6K | 21 | by Jan 1993 – Jul 2001 |
| Parker Trust 20 O-10-40513 | Acoma Operating, LLC only | Goldsmith (Pennsylvanian) | Ector | 1 | 25.6K | 45.8K | Jul 2010 – Aug 2026 |
| Hooker Trust O-8-24165 | Sojourner Drilling Corporation only | Billy-Billy (Upper Strawn) | Stonewall | 1 | 25.5K | 20 | by Jan 1993 – Mar 2007 |
| Sherrill Trusts O-13-28848 | LMH Energy only | Wichita County Regular | Wichita | 3 | 25.4K | 1 | Sep 1994 – Jul 2026 |
| Davis, Elsie F. Trustee O-3-20985 | Gcows Operating LLC only | Manvel (Miocene -B-, Upper) | Brazoria | 1 | 25.4K | 9.14K | by Jan 1993 – Feb 2004 |
| Alliance Trust Co. O-11-62817 | Hardin Energy Co., Inc. only | Sharon Ridge (Clear Fork) | Scurry | 2 | 25.2K | 78 | Apr 1993 – Aug 2026 |
| Iowa Realty Trust 125 "A" O-10-22689 | Last Mile Production, LLC only | Brooklaw (Clear Fork, Lower) | Pecos | 6 | 25.2K | 10.6K | by Jan 1993 – Feb 2017 |
| McGinley Trust O-10-29271 | Griffin Petroleum Company only | Wheat (Cherry Canyon) | Loving | 1 | 24.9K | 29.2K | by Jan 1993 – Nov 2005 |
| Walker-Bucker Trust "B" O-8-27004 | Snyder Drilling Corp. only | Shackelford County Regular | Shackelford | 6 | 24.8K | 53 | Aug 1993 – Aug 2026 |
| Laird, Mack Oil Unit #2 O-6-12232 | Long Trusts, The only | Wright Mountain (Pettit, Lower) | Smith | 1 | 24.7K | 20 | by Jan 1993 – Mar 2024 |
| Kincaid, A. R. Trust 'C' O-9-13725 | Epic Permian Operating, LLC only | Ozona (Canyon Sand, Oil) | Crockett | 1 | 24.6K | 280K | Dec 1994 – Jan 2021 |
| Brown "B" O-8-28936 | Ram Oil and Gas, Inc. only | Rust Creek (Miss) | Throckmorton | 3 | 24.3K | 0 | Mar 2001 – Sep 2024 |
| Mills-McGee Trust Unit O-3-23514 | Union Pacific Resources Company only | Giddings (Buda) | Milam | 1 | 24.3K | 48.3K | Mar 1998 – Dec 1998 |
| Schenecker Trust O-10-30086 | Saga Petroleum Corp. only | W W W (Ramsey) | Ward | 3 | 24K | 10.4K | by Jan 1993 – Mar 1998 |
| Wakefield Trust O-10-35010 | Endeavor Energy Resources L.P. only | Sweetie Peck (Pennsylvanian) | Upton | 1 | 23.9K | 48.5K | Mar 1996 – Apr 2008 |
| TP Land Trust "23" O-10-49460 | Ovintiv USA Inc. only | Spraberry (Trend Area) | Midland | 8 | 23.6K | 13.4K | Jan 2018 – Jun 2022 |
| Guitar Trust Estate -A- O-8-2208 | Beasley Well Service Inc. only | Jones County Regular | Jones | 5 | 23.6K | 68 | by Jan 1993 – Jul 2026 |
| Millhollon Trust O-10-30006 | Reatta Energy, Inc. only | Spraberry (Trend Area) | Martin | 1 | 23.5K | 149K | by Jan 1993 – Aug 2012 |
| Williams Mineral Trust "1" O-8-27031 | Van Operating, Ltd. only | Herr-King (Cross Cut) | Callahan | 2 | 23.5K | 12 | Oct 1993 – Mar 2010 |
| Carl, Wm. F. Trustee et al "A" O-4-10016 | Tigel Standard Oil LLC only | Montemayor (5500) | Duval | 4 | 23.3K | 58.1K | by Jan 1993 – Dec 2020 |
| Trust Buster O-10-57236 | Mewbourne Oil Company only | Hoefs T-K (Wolfcamp) | Reeves | 1 | 23.2K | 218K | Feb 2022 – Aug 2026 |
| Davis-Trustee O-14-4610 | Continental Operating Co. only | Horizon (Cleveland) | Ochiltree | 1 | 23.2K | 219 | by Jan 1993 – Apr 2011 |
| Martin Trust O-13-30232 | Gannett Operating LLC only | Minta Wright (Mississippi) | Young | 1 | 23.1K | 12.9K | Nov 2003 – Jan 2012 |
| Birdsong O-6-12783 | Long Trusts, The only | R.C.R. (Pettit -A-) | Gregg | 2 | 23K | 74.3K | by Jan 1993 – Feb 2025 |
| Fite, W. P. Unit O-6-14585 | Long Trusts, The only | Minden (Travis Peak Cons.) | Rusk | 1 | 22.9K | 47.5K | Apr 2006 – Jul 2026 |
| Mauritz, Fred Trust Estate O-2-6804 | Fredco only | Mauritz (6245) | Jackson | 1 | 22.8K | 2.09K | by Jan 1993 – Feb 2008 |
| Shook Trust O-11-65927 | Southwest Royalties, Inc. only | Brahaney, Northwest (Devonian) | Yoakum | 2 | 22.6K | 2.97K | by Jan 1993 – Jul 1995 |
| Baker Trust O-10-38830 | Ovintiv USA Inc. only | Spraberry (Trend Area) | Howard | 1 | 22.4K | 27.6K | May 2008 – Aug 2022 |
| Millhollen Trust "9" O-10-39375 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Martin | 1 | 22.4K | 22.6K | Feb 2009 – Jun 2022 |
| Saunders, G. H. Trust No. 5 O-14-7200 | Large Operating LLC only | Panhandle Gray County Field | Gray | 1 | 22.4K | 2.76K | May 1997 – Jul 2026 |
| Field & Bowers "B" O-13-28458 | Bayer, Frances E. Rev Liv Trust only | Cooke County Regular | Cooke | 2 | 22.2K | 22 | by Jan 1993 – Jan 2016 |
| McCampbell Trust Gas Unit O-4-12816 | Esenjay Exploration, Inc only | Harvey, S. (Stark) | San Patricio | 1 | 22.2K | 20.4K | Mar 1998 – Dec 2001 |
| Flowers Trust "A" O-14-6329 | Mmgl Txph, LLC only | Mendota, NW. (Granite Wash, SW.) | Roberts | 1 | 22.1K | 1.19M | by Jan 1993 – Aug 2026 |
| Moe, Barbara Trustee O-5-3433 | Kilmarnock Oil Company, Inc. only | Corsicana (Woodbine) | Navarro | 3 | 22.1K | 21 | by Jan 1993 – Sep 1998 |
| Kentucky Trust O-8-4733 | Harvick, George R. only | Throckmorton County Regular | Throckmorton | 1 | 22K | 134K | by Jan 1993 – Apr 2025 |
| Walker Buckler Trust Tr. 20 O-8-18404 | Keating Energy, Inc. only | Gem, Northeast (Caddo) | Shackelford | 1 | 21.6K | 407K | by Jan 1993 – Aug 2026 |
| Laird, Mack Oil Unit #3 O-6-12365 | Long Trusts, The only | Wright Mountain (Pettit, Lower) | Smith | 1 | 21.6K | 21 | by Jan 1993 – Jul 2026 |
| Treadwell Trust -19-A O-9-17128 | BRP Energy, LLC only | Fort McKavitt, N. (Canyon) | Schleicher | 1 | 21.5K | 131K | Apr 2010 – Jun 2026 |
| Cloud O-13-8664 | Bunch Family Oil Trust only | Goree, S. (Tannehill) | Knox | 7 | 21.2K | 0 | Jul 2004 – Mar 2017 |