| Trust McCoy "B" O-8-27531 | Van Operating, Ltd. only | Florence (Miss.) | Throckmorton | 1 | 35.9K | 12.9K | May 1995 – Sep 1999 |
| Jones Trust 272 O-14-7732 | EOG Resources, Inc. only | Lipscomb (Cleveland) | Lipscomb | 1 | 35.7K | 146K | Feb 2007 – Mar 2017 |
| Brown Trust '10' O-10-44967 | Diamondback E&P LLC only | Spraberry (Trend Area) | Martin | 1 | 35.7K | 37.3K | Mar 2014 – Apr 2026 |
| Freeman, Odell "A" O-8-18039 | Rust Oil Corp. only | Jay (Strawn) | Jones | 2 | 35.5K | 24.1K | by Jan 1993 – Mar 2010 |
| Hughes Royalty Trust O-6-15747 | Petro-Chem Operating Company,inc only | Nogo (Rodessa) | Rusk | 1 | 35.4K | 0 | Aug 2019 – Aug 2026 |
| JBG Childrens 1991 Trust C O-3-24305 | Lone Wolf Operating Company only | Brookshire Dome (Miocene 5-1C) | Waller | 1 | 35.3K | 4.48K | Feb 2003 – Feb 2004 |
| Standard Trust Co. O-3-9216 | McA Petroleum Corporation only | Muldoon, SW. (Drenner) | Fayette | 3 | 35.2K | 2 | Dec 1998 – Aug 2026 |
| Hooker Trust O-8-26526 | Lariat Land & Exploration, Inc. only | Jones County Regular | Jones | 2 | 35.2K | 140 | by Jan 1993 – Aug 2026 |
| Swenson Trust O-11-68522 | Henson Exploration, L.P. only | Spur, South (Croton Lime) | Dickens | 1 | 35K | 0 | Nov 2002 – Sep 2019 |
| Yost Trust O-10-29610 | PDC Permian, Inc. only | Reeves-Block 4 (del. 4430) | Reeves | 1 | 34.1K | 85.6K | Jan 2005 – Nov 2019 |
| Hudson-Morley Trust O-11-68900 | Joplin Oil Co., Inc. only | Spivey (San Andres) | Yoakum | 1 | 34K | 0 | Jan 2006 – Aug 2026 |
| Kentucky Trust 984 O-8-31674 | S.B. Street Operating, Inc. only | Lueders, S. (King Sand) | Throckmorton | 1 | 34K | 92.3K | Oct 2014 – Aug 2026 |
| Guitar Trust Estate -F- O-10-8466 | Americo Energy Resources, LLC only | Varel (San Andres) | Howard | 7 | 33.9K | 31 | by Jan 1993 – Jul 2026 |
| Sam Leathers Trust (Allocation) O-3-26937 | Trailblazer Energy Resources,llc only | Halliday (Woodbine) | Leon | 1 | 33.8K | 74.1K | Jun 2013 – Jul 2018 |
| Family Land Heritage Trust O-6-13704 | Geo-Vest of Texas, Inc. only | Danville (Travis Peak Cons.) | Gregg | 2 | 33.5K | 451K | Aug 1997 – Jan 2008 |
| Denson Trust -E- O-14-4288 | Large Operating LLC only | Panhandle Moore County Field | Moore | 3 | 33.4K | 11 | Jun 1994 – Jul 2026 |
| Danville Oil Unit O-6-14075 | Long Trusts, The only | R.C.R. (Pettit -A-) | Gregg | 1 | 33.2K | 5.79K | Mar 2001 – Oct 2024 |
| Wimberly Family Trust O-13-32938 | Oakridge Oil and Gas, LP only | KRS (Marble Falls) | Jack | 2 | 32.3K | 302K | Apr 2014 – Jul 2025 |
| Iowa Realty Trust 125 O-10-21171 | Last Mile Production, LLC only | Brooklaw (Clear Fork, Lower) | Pecos | 3 | 32K | 269 | by Jan 1993 – Dec 2019 |
| R&S Trust O-13-33989 | BKM Production only | Pottsboro, West (Cordell Sd.) | Grayson | 1 | 32K | 145 | Nov 2018 – Aug 2026 |
| Guitar Trust Estate -C- O-10-8802 | Americo Energy Resources, LLC only | Varel (San Andres) | Howard | 6 | 32K | 25 | by Jan 1993 – Jul 2026 |
| Beirne Trust O-13-31504 | Seitz, J. R. & Adam, Ltd. only | Dove | Cooke | 1 | 31.9K | 0 | Jan 2010 – Aug 2026 |
| Stiles Trust O-6-14814 | Sojourner Drilling Corporation only | Clinton Lake (Cotton Valley) | Marion | 1 | 31.9K | 159K | Feb 2008 – Jun 2015 |
| Kentucky Trust 984 O-8-31643 | S.B. Street Operating, Inc. only | Travis (Strawn Lower) | Throckmorton | 1 | 31.8K | 90.2K | Sep 2014 – Dec 2024 |
| Jackson Trust O-13-27000 | Borderline Operating Corp. only | Bryson, East | Jack | 2 | 31.8K | 20 | by Jan 1993 – Nov 2005 |
| Seale, F. L. Trust -B- O-8-11088 | CDJ Oil Company, LLC only | Callahan County Regular | Callahan | 5 | 31.8K | 141 | by Jan 1993 – Aug 2026 |
| Vick Trust Unit O-3-26478 | Wildfire Energy Operating LLC only | Madisonville, E. (Lewisville) | Madison | 1 | 31.7K | 315K | May 2012 – Sep 2019 |
| Martin Trust O-13-32963 | Gannett Operating LLC only | Young County Regular | Young | 1 | 31.4K | 8.21K | Aug 2014 – Jul 2026 |
| Sterling Trust O-10-36411 | GNG Operating LLC only | Coronet (2900) | Howard | 1 | 31.4K | 0 | Aug 2000 – Jun 2026 |
| Gray Trust O-13-18767 | Pruitt Oil & Gas only | Buck M. (Bryson) | Clay | 2 | 31.2K | 226 | by Jan 1993 – Dec 2007 |
| Garrett Trust O-6-12366 | Valence Operating Company only | Yantis (Heard Zone) | Wood | 1 | 31.1K | 355K | by Jan 1993 – Sep 2015 |
| Moos-Bouldin Trust (AW2) O-1-18194 | Auterra Operating, LLC only | Eagleville (Eagle Ford-1) | Gonzales | 1 | 30.9K | 12.8K | Aug 2014 – Oct 2025 |
| Powell Trust SWD O-14-6676 | High River Res Operating, LLC only | Lathem (Canyon Granite Wash) | Hartley | 2 | 30.6K | 22 | by Jan 1993 – Jan 1999 |
| Phillips-TXL-31- O-10-28715 | Rust Oil Corp. only | Harper | Ector | 4 | 29.8K | 18.4K | by Jan 1993 – Mar 2024 |
| Arminius Energy Trust O-1-17386 | Javelin Energy Partners Mgmt LLC only | Indio Tanks (Pearsall) | Frio | 1 | 29.6K | 287K | Sep 2013 – Sep 2021 |
| Schultz, David H. Trustee O-3-16958 | Harrison, Dan J Iii&bruce F Est only | McCrary (2ND Yegua) | Fort Bend | 1 | 29.5K | 21 | by Jan 1993 – Feb 2013 |
| Hooker Trust O-8-29040 | Sojourner Drilling Corporation only | Jones County Regular | Jones | 2 | 29.4K | 0 | Oct 2001 – Jul 2026 |
| Sumner Trust O-3-24809 | Triangle Three Resources L.L.C. only | Brookshire | Waller | 1 | 29.3K | 33.7K | Jan 2006 – Jun 2020 |
| Fidelity Trust O-10-36137 | XTO Energy Inc. only | Waha (Delaware) | Reeves | 1 | 29.2K | 80.6K | Nov 1999 – Aug 2026 |
| Shook, R. B. Trust O-11-68602 | Sei Operating, LLC only | Brahaney (Miss.) | Yoakum | 1 | 29K | 17K | Jul 2003 – Aug 2026 |
| Brittingham Trust "D" O-8-14601 | Spring Tree Management LC only | Shackelford County Regular | Shackelford | 8 | 29K | 20 | by Jan 1993 – May 2009 |
| Sterling Family Trust "B" O-10-34174 | MDC Operating, Inc. only | Double "B" (Canyon) | Mitchell | 1 | 28.9K | 184K | May 1994 – Nov 1998 |
| Carter, M.K. Trust NCT-1 O-10-20290 | Olsen Energy Inc. only | Edwards -04- (Bend, S.) | Crane | 1 | 28.9K | 37.3K | by Jan 1993 – Jun 2009 |
| Ford, Ed "D" O-8-14441 | Long Trusts, The only | Lucky Lane (Strawn) | Stephens | 2 | 28.8K | 54 | by Jan 1993 – Jul 2026 |
| Smith Oil Unit O-6-13115 | Long Trusts, The only | Danville (Pettit-A-Oil) | Gregg | 1 | 28.8K | 121K | by Jan 1993 – May 2000 |
| Guitar Trust Estate O-8-2225 | Beasley Well Service Inc. only | Jones County Regular | Jones | 7 | 28.7K | 138 | by Jan 1993 – Jul 2026 |
| Chapman O-8-28007 | Carey, Shirley L. Trust only | Group (4000) | Nolan | 1 | 28.3K | 0 | Oct 1996 – Apr 2001 |
| Morris, Annie T. -B- O-13-1905 | JF Trust only | Ross | Clay | 1 | 28.2K | 21 | by Jan 1993 – Mar 2016 |
| Broussard Trust O-3-25902 | Samson Exploration, LLC only | Sunset (Frio 8230) | Jefferson | 1 | 28.1K | 11.5K | May 2012 – Aug 2012 |
| Sterling Family Trust "C" O-10-34357 | MDC Operating, Inc. only | Double "B" (Canyon) | Mitchell | 1 | 28.1K | 126K | Jan 1995 – Nov 1998 |