| Mays Trust O-11-66267 | Sweet Crude Operating LLC only | Clairemont, SW. (Mays) | Kent | 1 | 64.7K | 41.8K | by Jan 1993 – Aug 2026 |
| Dolores Coulter Trust O-6-14865 | Goldston Oil Corporation only | Beauchamp Springs (Paluxy) | Smith | 1 | 64.3K | 25.8K | Feb 2009 – Aug 2026 |
| Standard Trust O-3-3109 | McA Petroleum Corporation only | Muldoon, SW. (Arnim Sand) | Fayette | 6 | 63.1K | 83 | by Jan 1993 – Aug 2026 |
| Laird, Mack O-6-12035 | Long Trusts, The only | Wright Mountain (Pettit, Lower) | Smith | 1 | 62.5K | 21 | by Jan 1993 – Jul 2026 |
| Parker Trust 20 O-10-39978 | Acoma Operating, LLC only | Monahans Draw (Canyon 8388) | Ector | 4 | 61.7K | 140K | Feb 2010 – Aug 2026 |
| Reed Trust 55-1-22 Lov O-10-44171 | Pdeh LLC only | Sandbar (Bone Spring) | Loving | 1 | 61.4K | 918K | Apr 2013 – Aug 2019 |
| Utzman O-6-13017 | Long Trusts, The only | R.C.R. (Pettit -A-) | Gregg | 1 | 61.3K | 59K | by Jan 1993 – Oct 2024 |
| Trusty Oil Unit O-3-10886 | Texas Operating Partners LLC only | Village Mills, East (V-1) | Hardin | 1 | 61.2K | 91K | by Jan 1993 – Oct 2014 |
| Lane Trust -a- Oil Unit O-10-41459 | Crescent Energy Operating, LLC only | Spraberry (Trend Area) | Glasscock | 1 | 61K | 271K | Apr 2011 – Aug 2024 |
| Alamo Natl Bnk., Trustee O-1-3424 | Caribbean Energy LLC II only | Jack Frost (Crockett) | La Salle | 5 | 60.8K | 21 | by Jan 1993 – Aug 2026 |
| J. H. Nail Trustee O-10-29718 | Diamondback E&P LLC only | Kiva (Dev) | Martin | 1 | 60.6K | 260K | by Jan 1993 – Jul 2026 |
| Bruni Mineral Trust O-4-13177 | Hilcorp Energy Company only | Brazil Pasture(wilcox Second) | Webb | 1 | 60.3K | 550K | Oct 2001 – Jun 2026 |
| Guitar Trust 7 O-10-39251 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Martin | 1 | 60.2K | 125K | Jul 2008 – Aug 2022 |
| Sieber Trust 25 O-10-44002 | Noble Energy Inc only | Wolfbone (Trend Area) | Reeves | 2 | 60.1K | 113K | May 2013 – Dec 2018 |
| Guitar Trust Estate -A- O-10-8569 | Americo Energy Resources, LLC only | Varel (San Andres) | Howard | 2 | 59.3K | 37 | by Jan 1993 – Sep 2019 |
| Hooker Trust O-8-27071 | Sojourner Drilling Corporation only | Noodle-Central (Flippen) | Jones | 1 | 59.1K | 8 | Dec 1993 – Jul 2026 |
| Davis, Elsie F. Trustee O-3-16126 | Gcows Operating LLC only | Manvel, E. (Miocene 3300) | Brazoria | 1 | 59K | 9.14K | by Jan 1993 – Aug 2026 |
| Mauritz, H. & Trust O-2-6374 | Fredco only | Mauritz (5450 Frio) | Jackson | 2 | 58.5K | 81 | by Jan 1993 – Sep 2024 |
| Barton, Martha et Al O-6-12785 | Long Trusts, The only | R.C.R. (Pettit -A-) | Gregg | 2 | 58.5K | 207K | by Jan 1993 – Oct 2023 |
| Duval Ranch, Sec. #100, a/C 2 O-4-2112 | Dewbre, Jerry C., Trustee only | Piedre Lumbre | Duval | 6 | 57.2K | 21 | by Jan 1993 – Mar 2015 |
| Mobil-Eidson "26" O-10-29579 | Rust Oil Corp. only | Mosswell (Strawn 8720) | Ector | 1 | 56.8K | 35.5K | by Jan 1993 – Aug 2005 |
| Parker Trust -19- O-10-28569 | Mayo, Eddie only | Monahans Draw (Canyon 8388) | Ector | 2 | 56.2K | 109K | by Jan 1993 – Aug 2011 |
| McFarland Trust O-6-14132 | Jla Resources Company only | Anwac (1400 Wilcox) | Anderson | 2 | 56.2K | 6.66K | Dec 2001 – Jun 2026 |
| Hale O-8-21203 | Trust Oil Co. only | Grady Roberts (Gray) | Coleman | 1 | 55.8K | 197K | by Jan 1993 – Feb 2019 |
| Prideaux O-13-10398 | Beisch, Rusty only | Archer County Regular | Archer | 31 | 55.7K | 21 | by Jan 1993 – Aug 2026 |
| Dungan-Key Trust O-4-14121 | Poco LLC only | Spartan (F-A) | San Patricio | 1 | 55.6K | 116K | Mar 2019 – Aug 2026 |
| Camp Trust 206 O-10-42419 | Noble Energy Inc only | Wolfbone (Trend Area) | Reeves | 1 | 55.2K | 93.1K | Nov 2012 – Nov 2020 |
| Vick Trust Unit B 5H (Alloc) O-3-27197 | Wildfire Energy Operating LLC only | Madisonville, W. (Woodbine -A-) | Madison | 1 | 53.9K | 1.14M | Jan 2015 – Jun 2023 |
| Dickson,roberta el Al,trustees E O-10-24931 | Armor Petroleum, Inc. only | Pinal Dome (Delaware) | Loving | 1 | 53.7K | 51.2K | by Jan 1993 – Sep 2012 |
| Doby, J. B. O-7-7367 | Aaa Oil Trust only | East Texas | Gregg | 4 | 53.5K | 21.4K | by Jan 1993 – Sep 1998 |
| McFarland, J. M. O-7-6978 | Long Trusts, The only | East Texas | Gregg | 3 | 53.1K | 31.1K | by Jan 1993 – Jul 2026 |
| Trusty Oil Unit O-3-10893 | Merit Energy Company only | Village Mills, East (W-1) | Hardin | 1 | 52.9K | 32.1K | by Jan 1993 – Sep 2000 |
| Duval State Section 64 O-4-2876 | Dewbre, Jerry C., Trustee only | Seventy-Six, West | Duval | 4 | 52.9K | 21 | by Jan 1993 – Nov 2018 |
| Parker Trust 20 O-10-39886 | Crescent Energy Operating, LLC only | Goldsmith (Clear Fork) | Ector | 9 | 52.3K | 107K | Nov 2009 – Sep 2021 |
| JBG Childrens 1991 Trust B O-3-24237 | Iron Jaw Operating LLC only | Brookshire | Waller | 4 | 52.2K | 15.8K | Jul 2002 – Aug 2024 |
| Walker-Buckler Trust /TR 15/ O-8-8715 | Keating Energy, Inc. only | Gem, Northeast (Caddo) | Shackelford | 2 | 51.7K | 651K | by Jan 1993 – Aug 2026 |
| Furr Mineral Trust O-13-32187 | Rogers Drilling Co., Inc. only | Baylor County Regular | Baylor | 1 | 51.5K | 0 | Feb 2012 – Aug 2026 |
| Hall Trust O-10-38855 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Martin | 2 | 51.5K | 53.7K | Aug 2008 – Jul 2014 |
| Wood Trust O-2-7793 | Hart Petroleum Services, Inc only | Wood High, South (5900) | Victoria | 1 | 51.3K | 101K | by Jan 1993 – Sep 1998 |
| Kentucky Trust 984 O-8-31129 | S.B. Street Operating, Inc. only | Parrott-Atkinson (Mississippian) | Throckmorton | 1 | 51K | 93.5K | Jan 2013 – Aug 2026 |
| Central Bank & Trust-Furr Unit O-13-26814 | Myers, James B. only | Archer County Regular | Archer | 1 | 50.6K | 85 | by Jan 1993 – Aug 2024 |
| Price Trust 76 Lip O-14-8675 | Unbridled Resources, LLC only | Feldman (Tonkawa) | Lipscomb | 1 | 50.5K | 98.9K | Apr 2012 – Oct 2025 |
| TP Land Trust "13" O-10-49458 | Diamondback E&P LLC only | Spraberry (Trend Area) | Midland | 6 | 50.2K | 62K | Jan 2018 – Aug 2026 |
| Semmes Trust , et al 906 O-4-13158 | Hilcorp Energy Company only | Rincon (80 Vicksburg) | Starr | 3 | 50.2K | 51.2K | Jun 2003 – Aug 2026 |
| Flowers Trust "A" O-14-7210 | Mmgl Txph, LLC only | Mendota, NW. (Granite Wash) | Roberts | 1 | 49.1K | 1.29M | Jul 1997 – Aug 2026 |
| Vick Trust Unit B 3H (Allocation O-3-27199 | Wildfire Energy Operating LLC only | Madisonville, W. (Woodbine -A-) | Madison | 1 | 48.5K | 770K | Jan 2015 – Jul 2026 |
| Fossil Wildman Trust Unit No. 3 O-5-3941 | Contrast Energy, LLC only | Hilltop Resort (Glen Rose 8498) | Leon | 1 | 48.2K | 8.87K | Mar 2011 – Jun 2025 |
| Sumner Trust Unit O-3-24834 | Triangle Three Resources L.L.C. only | Brookshire | Waller | 2 | 47.8K | 62.6K | Mar 2006 – Jun 2020 |
| Carter, M.K. Trust NCT-2 O-10-27854 | Olsen Energy Inc. only | Edwards -04- (Bend, S.) | Crane | 1 | 47.6K | 43K | by Jan 1993 – Aug 2026 |
| Jones Trust 21 O-14-9238 | Upland Resources LLC only | Feldman (Tonkawa) | Hemphill | 1 | 47.6K | 670K | Nov 2014 – Aug 2026 |