| 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 |
| Baker Family Trust G-2-255356 | Burlington Resources O & G Co LP only | Sugarkane (Austin Chalk) | Live Oak | 1 | 33.1K | 348K | Nov 2008 – Feb 2014 |
| C-Bruni Mineral Trust G-4-147241 | Hilcorp Energy Company only | La Perla (Lobo Cons.) | Webb | 1 | 33K | 2.38M | Nov 1993 – Aug 2026 |
| Mitchell 9 G-9-155264 | OXY USA Inc. only | Pakenham (Thrusted) | Terrell | 1 | 32.9K | 2.76M | Jun 1995 – May 2017 |
| Young Trust G-14-261116 | Mmgl Txph, LLC only | Allison Parks (Granite Wash) | Hemphill | 1 | 32.8K | 4.85M | Jan 2011 – Aug 2026 |
| Ammann, Homer Trust G-3-131950 | Faulconer Energy, LLC only | McFarlan (Cook Mountain) | Wharton | 1 | 32.6K | 6.26M | by Jan 1993 – Aug 2026 |
| Jones Trust 272 G-14-276332 | BE Anadarko II, LLC only | Lipscomb (Cleveland) | Lipscomb | 1 | 32.5K | 146K | Jun 2013 – Aug 2026 |
| 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 |
| Brown-Trusts G-1-271569 | BPX Operating Company only | Hawkville (Eagleford Shale) | La Salle | 1 | 32K | 1.16M | Sep 2013 – Aug 2026 |
| 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 |
| James Trust G-1-279005 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 31.9K | 4.18M | Jun 2015 – Aug 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 |
| James Trust G-1-279148 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 31K | 3.74M | Jun 2015 – Aug 2026 |
| 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 |
| Boston Texas Land & Trust G-4-241000 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 30.6K | 2.83M | Jun 2008 – Aug 2026 |
| Flowers Trust 'B' G-14-268115 | Mewbourne Oil Company only | Mendota, NW. (Granite Wash) | Roberts | 1 | 30.5K | 2.67M | Oct 2012 – Aug 2026 |
| Marshall Bros. Trust G. V. NO.1 G-3-82061 | Galloway Lone Star, L.L.C. only | Tomball, SE. (11700) | Harris | 1 | 30.4K | 1.6M | by Jan 1993 – Aug 2026 |
| Flowers Trust "B" G-14-255332 | Mewbourne Oil Company only | Mendota, NW. (Granite Wash) | Roberts | 1 | 30.4K | 3.21M | Jan 2010 – Aug 2026 |
| C-Bruni Mineral Trust G-4-158097 | Hilcorp Energy Company only | Bashara-Hereford (7300) | Webb | 1 | 30.1K | 3.97M | Mar 1996 – Aug 2026 |
| West Ranch G-10-128799 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 29.8K | 20.4M | by Jan 1993 – Mar 2024 |
| Phillips-TXL-31- O-10-28715 | Rust Oil Corp. only | Harper | Ector | 4 | 29.8K | 18.4K | by Jan 1993 – Mar 2024 |
| Flowers Trust "A" G-14-92572 | Mmgl Txph, LLC only | Mendota, NW. (Granite Wash) | Roberts | 1 | 29.8K | 777K | by Jan 1993 – Oct 2023 |
| Arminius Energy Trust O-1-17386 | Javelin Energy Partners Mgmt LLC only | Indio Tanks (Pearsall) | Frio | 1 | 29.6K | 287K | Sep 2013 – Sep 2021 |
| Boston Texas Land & Trust G-4-272978 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 29.6K | 2.91M | May 2014 – Aug 2026 |
| 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 |
| Brown-Trusts Unit 4 G-1-273595 | BPX Operating Company only | Eagleville (Eagle Ford-1) | La Salle | 1 | 29.5K | 3.37M | Jun 2014 – Aug 2026 |
| Bruni Mineral Trust "B" G-4-247401 | Hilcorp Energy Company only | Liz (9200) | Webb | 1 | 29.4K | 3.96M | Aug 2008 – Aug 2026 |
| 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 |
| Mitchell 4 G-9-161386 | Hilcorp Energy Company only | Pakenham (Thrusted) | Terrell | 1 | 29.2K | 2.17M | Aug 1996 – Aug 2026 |
| Boston Texas Land & Trust G-4-284805 | Merit Energy Company only | Javelina (Vicksburg Cons.) | Hidalgo | 1 | 29.2K | 2.94M | May 2018 – Aug 2026 |
| Scurlock Trust G-3-142319 | WRD Operating LLC only | Clinton, N. (Yegua 8400) | Harris | 1 | 29.1K | 3.22M | by Jan 1993 – Dec 2025 |
| 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 |
| Mitchell 11 G-9-153243 | Vintage Petroleum, LLC only | Pakenham (Thrusted) | Terrell | 1 | 29K | 2.03M | Nov 1995 – Apr 2001 |
| 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 |